CN112568784A

CN112568784A - Vacuum cleaner with a vacuum cleaner head

Info

Publication number: CN112568784A
Application number: CN202011403809.0A
Authority: CN
Inventors: 孙正圭; 南普铉; 朴材容; 裵世焕; 徐宗玄; 李辰雨
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2016-02-29
Filing date: 2017-02-27
Publication date: 2021-03-30
Anticipated expiration: 2037-02-27
Also published as: EP3424391A4; CN112568784B; CN108697292B; AU2017227409B2; JP2019509096A; EP3424391A1; AU2017227409A1; JP6748727B2; EP3424391B1; RU2697039C1; CN108697292A

Abstract

The present invention provides a vacuum cleaner, more specifically, the vacuum cleaner comprises: a cleaner body; a cover member openably and closably attached to an upper portion of the cleaner body and forming a part of a front surface and an upper surface of the cleaner body; a suction hose provided to a front surface of the cover member; a hole formed at a front surface of the cover member and communicating with the suction hose; a discharge port formed at a rear surface of the cleaner body and at a position lower than the hole; the air flowing in through the hole is discharged to the discharge port after passing through the inside of the cleaner body.

Description

Vacuum cleaner with a vacuum cleaner head

The application is a divisional application of an application with application date of 2017, 2 and 27, application number of 201780013399.9 and invention name of "vacuum cleaner".

Technical Field

The present invention relates to a vacuum cleaner.

Background

Generally, a vacuum cleaner is an apparatus that sucks dust, foreign substances, and the like existing on a surface to be cleaned by using a main motor provided inside a main body, and then filters the dust, foreign substances, and the like inside the main body.

The vacuum cleaner as described above can be divided into: an upright (up-right) type vacuum cleaner in which a suction nozzle is connected to a body so as to move together with the body; the suction nozzle is a bucket (canister) type vacuum cleaner connected to the body by means of an extension tube, a handle, a hose, etc.

Korean laid-open patent publication No. 10-2012-0004100 (published: 1/12/2012) discloses a canister vacuum cleaner.

Disclosure of Invention

Technical problem to be solved

The invention aims to provide a vacuum cleaner which improves the air flow in the cleaner body.

The invention aims to provide a vacuum cleaner, which can cool a PCB by utilizing air flowing in the cleaner body.

The invention aims to provide a vacuum cleaner, which can cool a battery unit by utilizing air flowing in the cleaner body.

The invention aims to provide a vacuum cleaner which can reduce the noise when the vacuum cleaner is operated.

Technical scheme for solving problems

A vacuum cleaner of an embodiment of the present invention includes: a cleaner body; a cover member openably and closably attached to an upper portion of the cleaner body and forming a part of a front surface and an upper surface of the cleaner body; a suction hose provided at a front surface of the cover member; a hole communicating with the suction hose at a front surface of the cover member; a main motor provided inside the cleaner body for forcing the flow of air; a battery unit disposed inside the cleaner body; a base frame dividing the interior of the cleaner body into a space in which an upper portion of the main motor is disposed and a space in which a lower portion of the battery unit is disposed; a frame hole formed in the base frame and opened to direct air discharged from the main motor toward a space in which a lower portion of the battery unit is disposed; a filter unit disposed to shield the frame hole, and filtering dust in the air discharged from the main motor; a PCB provided inside the cleaner body, the PCB being cooled by air passing through the filter unit; and a discharge port formed on a rear surface of the cleaner body and below the hole, and through which air flowing in through the hole passes through the interior of the cleaner body and is discharged to the discharge port.

A vacuum cleaner of an embodiment of the present invention includes: a hole communicating with a suction hose provided on a front surface of a cover member attached to an upper portion of the cleaner body in an openable and closable manner; and a discharge port formed on a rear surface of the cleaner body below the hole; the air flowing in through the hole is discharged to the discharge port after passing through the inside of the cleaner body.

The dust bucket may be disposed in the cleaner body in an inclined manner, and the discharge port of the dust bucket may be disposed to face the inside of the cleaner body.

The suction port and the discharge port of the dust bucket may be sequentially arranged in a front-rear direction along a center of the cleaner body.

A vacuum cleaner of an embodiment of the present invention includes: a base frame dividing an inner space of the cleaner body; a main motor provided in a space partitioned by the base frame, for sucking dust and flowing air; a frame hole formed in the base frame to discharge air discharged from the main motor; a filter unit disposed to face the frame hole, for filtering dust in the air discharged from the main motor; and a PCB disposed inside the cleaner body and cooled by air passing through the filter unit.

Also, a first side wall and a second side wall may be formed at the base frame, the main motor may be disposed adjacent to the first side wall, and the frame hole may be formed at a bottom surface of the cover plate corresponding to between the main motor and the second side wall.

The PCB may be disposed between an outlet of a dust bucket provided on the cleaner body and an outlet of the cleaner body.

And a partition plate is formed on a lower surface of a cover plate to which the main motor is mounted, the partition plate dividing an interior of the cleaner body into a space to accommodate the filter unit and a space to provide the PCB, and partition holes opened to allow air passing through the filter unit to flow into the PCB side are formed in the partition plate.

And, a battery unit may be provided under the filter unit, the battery unit being cooled by a portion of air other than air for cooling the main PCB among air passing through the filter unit.

A vacuum cleaner of an embodiment of the present invention includes: a main motor provided inside the cleaner body for forcing air to flow; a battery unit disposed inside the cleaner body; a base frame dividing a space for configuring the main motor and the battery unit; a frame hole that is open in the base frame so as to direct air discharged from the main motor toward the battery unit; and a filter unit disposed inside the cleaner body for filtering dust in the air discharged from the main motor.

A vacuum cleaner of an embodiment of the present invention includes: a dust barrel provided in the cleaner body and arranged so that the suction port and the discharge port face each other; and a suction guide provided in the cleaner body and having a guide hole formed therein for guiding the air discharged from the discharge port to the main motor; the hole is aligned with the suction port, the discharge port, and the guide hole.

The hole, the suction port, the discharge port, and the guide hole may be arranged in this order from the front to the rear.

The hole, the suction port, the discharge port, and the guide hole may be disposed on an extension line passing through the center of the cleaner body.

The hole, the suction port, the discharge port, and the guide hole may be arranged along a lower direction in this order.

Technical effects

The vacuum cleaner according to the embodiment of the present invention has the following effects.

The suction hose is connected to the cover member to suck air from an upper end of a front surface of the cleaner body and discharge the air through a discharge port of a lower portion of a rear surface of the body, thereby improving the flow of the air.

Further, the hole communicating with the suction hose serving as the air flow path, the suction port of the dust bucket, the discharge port, and the guide hole guiding the air to the main motor are arranged in a straight line, and the air flow can be further improved.

The hole, the suction port, the discharge port, the guide hole, and the discharge port are arranged in this order from the front to the rear, and the flow of air can be further improved.

The hole, the suction port, the discharge port, the guide hole, and the discharge port are disposed on an extension line passing through the center of the cleaner body, so that the flow of air can be further improved.

The hole, the suction port, the discharge port, the guide hole, and the discharge port are arranged in this order along the lower side, and the flow of air can be further improved.

Further, a part of the air discharged from the main motor is not directly discharged to the outside of the cleaner body, but can be flowed to the main PCB side, and the main PCB can be efficiently cooled.

Further, the air discharged from the main motor can be discharged to the outside through the battery unit inside the cleaner body, and the battery unit can be cooled efficiently.

Further, the main motor is disposed adjacent to one of the pair of side walls, and air discharged from the main motor can be discharged through the frame hole between the side wall remote from the main motor and the main motor. This allows the air to flow in one direction with directivity, thereby reducing air flow noise generated when the main motor is driven.

Further, the center of gravity of the cleaner body is provided in the rear half so that the cleaner body can rotate around the movable wheels and can be in contact with the floor surface to maintain a stable supported state.

In addition, because the gravity center is positioned at the rear half part, when the dust collector stops running, the dust collector body can rotate and reach an inclined state, and when the dust collector body runs, the dust collector body can rotate and change the angle, so that the stop or moving state of the dust collector can be accurately judged.

According to the vacuum cleaner of the embodiment of the present invention, the center of gravity of the cleaner body is provided in the rear half so that the cleaner body can rotate around the movable wheels and can be in contact with the floor surface to maintain a stable supporting state.

A detection unit for detecting the posture, i.e., the inclination or the rotation angle of the cleaner body is provided in the cleaner body. Further, since the suction hose has a structure connected to an upper portion of the body, the body is inclined when a user pulls the suction hose in order to move the cleaner, and the moving wheel can be driven by the detecting part which detects such a situation.

Therefore, the user does not need to pull the body to move the body, the body can automatically run only by the light operation of moving the suction hose, and the body can run along with the user when the user moves, so that the use convenience can be improved.

In particular, the cleaner body is always stopped with a certain slope regardless of the presence or absence of dust in the dust bucket or the amount of dust, so that the reliability of slope detection of the detecting part can be improved.

Drawings

Fig. 1 is a perspective view of a vacuum cleaner of an embodiment of the present invention.

Fig. 2 is a view showing a state where the cleaner body and the suction device are separated.

Fig. 3 is a view showing a state where a dust bucket is separated from the cleaner body.

Fig. 4 is a view showing a state where a cover member of the cleaner body is opened.

Fig. 5 is an exploded perspective view of the cleaner body.

Fig. 6 is an exploded perspective view of the pre-filter assembly of an embodiment of the present invention, shown open.

Fig. 7 is a sectional view of the cleaner body.

Fig. 8 is a plan view of the cleaner body with the cover member detached.

Fig. 9 is an exploded perspective view of the coupling structure of the cleaner body, the moving wheel, and the detecting unit as viewed from one direction.

Fig. 10 is an exploded perspective view of the coupling structure of the cleaner body, the moving wheel, and the detecting unit, as viewed from another direction.

Fig. 11 is a side view showing an installation state of the cleaner body and the cog assembly.

Figure 12 is a side view of the cleaner body.

Fig. 13 is a bottom view of the cleaner body.

Fig. 14 is an exploded perspective view showing a coupling structure of the rear wheel unit of the embodiment of the present invention.

Fig. 15 is a sectional view showing an operating state of the rear wheel unit.

Fig. 16 is a rear view of the cleaner body with the rear cover open.

Fig. 17 is an exploded perspective view showing a coupling structure of a battery and a filter according to an embodiment of the present invention.

Fig. 18 is a sectional view of the cleaner body in a state before the battery is mounted.

Fig. 19 is a sectional view of the cleaner body in a state where the battery is mounted.

Fig. 20 is a perspective view of the cover member.

Fig. 21 is an exploded perspective view of the cover member.

Fig. 22 is a partial cross-sectional view showing a coupling structure of the cover member and the obstacle detecting member.

Fig. 23 is an exploded perspective view showing a coupling structure of a locking assembly of an embodiment of the present invention.

Fig. 24 is a perspective view showing a state before the operation of the locking assembly.

Fig. 25 is a sectional view showing a state before the operation of the locking assembly.

Fig. 26 is a perspective view showing an operation state of the locking assembly.

Fig. 27 is a sectional view showing an operation state of the locking assembly.

Fig. 28 is a top view of the cover member in a state where the display of the embodiment of the present invention is closed.

Fig. 29 is a top view of the cover member in a state where the display of the embodiment of the present invention is opened.

Fig. 30 is a perspective view in which the cover member is opened.

Fig. 31 is an exploded perspective view showing a coupling structure of a coupling member assembly of the embodiment of the invention.

Fig. 32 is a sectional view showing a state of the coupling assembly in a state where the cover member is closed.

Fig. 33 is a sectional view showing a state of the coupling assembly in a state where the cover member is opened.

Fig. 34 is an enlarged view of a portion a of fig. 30.

Fig. 35 is a partial perspective view showing the structure of the cover member coupling part and the arrangement of the display cables of the embodiment of the present invention.

Fig. 36 is a view showing a cable arrangement state inside a cover base of the cover member.

Fig. 37 is a view showing a coupling structure of the electric wire on the cleaner body side.

Fig. 38 is a perspective view of the dust bucket.

Fig. 39 is an exploded perspective view of the dust bucket.

Fig. 40 is an exploded perspective view of a coupling structure of an upper cover and a lower cover of the dust bucket as viewed from one side.

Fig. 41 is a sectional view of the upper cover opened.

Fig. 42 is an exploded perspective view of the coupling structure of the upper and lower covers of the dust bucket, as viewed from the other side.

Fig. 43 is a sectional view of the lower cover opened.

Fig. 44 is an exploded perspective view illustrating a coupling structure of the lower cover and the dust compressing unit.

Fig. 45 is an enlarged view of a portion B of fig. 41.

Fig. 46 is a sectional view showing the flow of air and dust of the cleaner body.

Fig. 47 is a plan view showing the flow of air and dust of the cleaner body.

Fig. 48 is a view showing a stopped state of the cleaner body.

Fig. 49 is a view showing a traveling state of the cleaner body.

Fig. 50 is a view showing an obstacle avoidance traveling state of the cleaner body.

Fig. 51 is a diagram showing a detection range of the obstacle detecting member.

Fig. 52 is a view showing a wall surface traveling state of the cleaner body.

Fig. 53 is a view showing a state in which a main body of a cleaner body according to another embodiment of the present invention is inclined forward.

Fig. 54 is a view showing a state where the main body is inclined rearward.

Fig. 55 is a diagram showing a structure of a support portion of another embodiment of the present invention.

Fig. 56 is a view sequentially showing a state in which a battery is incorporated into the cleaner body.

Fig. 57 is a view sequentially showing a state where the battery is separated from the cleaner body.

Detailed Description

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiment presenting the idea of the present invention, and other inventions that go back and go out of the way or other embodiments included in the scope of the idea of the present invention can be easily presented by adding, changing, deleting, or the like of other components.

Fig. 1 is a perspective view of a vacuum cleaner of an embodiment of the present invention. Further, fig. 2 is a view showing a state where the cleaner body and the suction device are separated.

As shown in the drawings, a vacuum cleaner 1 of an embodiment of the present invention includes a cleaner body 10 and a suction device 20.

A motor for generating a suction force is provided inside the cleaner body 10. In addition, when the motor is driven to generate a suction force, the suction device 20 may guide air containing dust toward the cleaner body 10.

The inhalation device 20 may include: a suction unit 21 for sucking dust on a cleaning surface (floor surface, for example); a connection part for connecting the suction part 21 to the cleaner body 10. The connection part may include: an extension pipe 22 connected to the suction part 21; a handle 23 connected to the extension pipe 22; a suction hose 24 for connecting the handle 23 to the body 10.

The suction hose 24 may be provided with a sealing portion 241(fitting), and the sealing portion 241 may improve airtightness when combined with the connector 401 of the cleaner body 10.

The sealing portion 241 allows the suction hose 24 to be attached to and detached from the connector 401. The sealing portion 241 may be formed in multiple stages as shown in the figure.

The cleaner body 10 includes a body 30 and a cover member 40 for forming an appearance as a whole.

The cleaner body 10 may further include a moving wheel 60 rotatably coupled to the body 30. The moving wheels 60 may be provided in a pair and may be coupled to both sides of the body part 30, respectively. The moving wheel 60 supports the main body 30 such that the main body 30 rotates about the rotation center of the moving wheel 60.

The cover member 40 may be provided with a grip 41(grip) to be gripped by a user. When it is necessary to lift or tilt the main body 30 or to open or close the lid member 40, the user can hold the holding portion 41.

A rear cover 314 that can be opened and closed may be provided on the rear surface of the main body 30. The rear cover 314 may be formed to open and close a space formed inside the body part 30 for accommodating the battery unit 38 and the filter unit 39.

The cleaner body 10 further includes a dust bucket 50 for storing dust sucked through the suction device 20. The dust bucket 50 may be formed of a cylindrical shape as shown, but the present invention is not limited to such a shape. In addition, the dust bucket 50 may be provided in a detachable manner to the front surface of the body part 30.

Further, fig. 3 is a view showing a state where the dust bucket is separated from the cleaner body. Further, fig. 4 is a view showing a state where a cover member of the cleaner body is opened.

As shown in the drawings, the dust bucket 50 is detachably mounted to a mounting portion 32 formed at the front half of the body portion 30. The dust bucket 50 may form a part of the front surface of the body part 30 in a state of being mounted on the mounting part 32. The dust bucket 50 is detachable by opening and closing the cover member 40.

A suction port 511 for sucking dust may be provided at the dust bucket 50. The suction port 511 may be disposed at an upper surface portion of the dust tub 50 as shown in the drawing. Accordingly, the air flowing into the suction port 511 is guided downward and moves to the dust collecting space inside the dust tub 50.

The dust bucket 50 may be detachably mounted to the body part 30. A dust collecting space for collecting dust flowing in the suction port 511 may be formed inside the dust tub 50.

The dust tub 50 may be disposed in front of the main body 30, and at least a portion of a side surface of the dust tub 50 may be formed of a transparent material so that a user can confirm dust collected in the dust collecting space.

In a state where the dust bucket 50 is seated in the seating part 32, the side surface part may be exposed through the front surface of the body part 30. At this time, the exposed portion of the dust bucket 50 is from the upper end to the lower end of the transparent side surface of the dust bucket 50, so that the entire space for collecting the dust can be recognized without separating the dust bucket 50.

A dust separating structure may be provided inside the dust bucket 50 for separating air and dust sucked from the suction device 20 from each other, and the dust separated by the dust separating structure may be trapped under the dust bucket 50.

The connector 401 may be directly connected to the suction hose 24 so as to allow air containing dust to flow in. That is, one side of the connector 401 is coupled to the suction hose 24, and the other side is coupled to the suction port 511. Thereby, the connector 401 connects the suction hose 24 and the suction port 511.

The connector 401 may communicate with the dust bucket 50. Thus, the air flowing into the suction hose 24 may flow into the dust bucket 50 via the connector 401.

A suction port 511 into which dust flows may be provided at one side of the dust tub 50. As shown, the suction port 511 may be provided at an upper portion of the dust tub 50. The suction port 511 may be formed to face forward. The front is a portion where the suction hose 24 is located with respect to the cleaner body 10.

As shown, the connector 401 may be disposed at an upper portion of the dust bucket 50. By disposing both the suction port 511 and the connector 401 above the dust bucket 50, the length of the flow path of the air flowing in from the suction hose 24 can be minimized.

The cleaner body 10 further includes a cover member 40 movably provided to the body portion 30. The cover member 40 may form at least a part of the upper surface of the cleaner body 10, and may be configured to be capable of opening and closing the upper surface of the main body 30. At this time, the cover member 40 is rotatably coupled to the main body 30 at the rear end thereof, and is opened by rotating the grip portion 41.

The connector 401 may be provided to the cover member 40. Thereby, the connector 401 can move together with the cover member 40. The cover member 40 may shield at least one side of the dust bucket 50. The cover member 40 may be combined with the dust tub 50 while shielding at least one side of the dust tub 50. The cover member 40 may be combined with the dust bucket 50 in a state where it is closed, and may be separated from the dust bucket 50 in a state where it is opened. For example, the cover member 40 may be coupled to an upper portion of the dust bucket 50.

In a state where the cover member 40 is closed, the sealing portion 241 of the suction hose 24 connected to the connector 401 of the cover member 40 may communicate with the suction port 511 of the dust bucket 50. Thereby, the dust and air sucked through the suction device 20 may pass through the connector 401 of the cover member 40 and flow into the dust bucket 50 through the suction port 511.

In addition, in a state where the cover member 40 is opened, the close contact portion 241 of the suction hose 24 is kept connected to the connector 401 of the cover member 40, and the cover member 40 and the dust bucket 50 can be separated. Thereby, the dust bucket 50 can be separated from the installation part 32 in a state where the cover member 40 is opened.

The cleaner body 10 will be described in more detail below.

Fig. 5 is an exploded perspective view of the cleaner body. Further, fig. 6 is an exploded perspective view of the pre-filter assembly of an embodiment of the present invention being opened. Fig. 7 is a sectional view of the cleaner body. Fig. 8 is a plan view of the cleaner body with the cover member detached.

As shown in the drawings, the cleaner body 10 may include the body 30 and the cover member 40, and is configured to mount the dust bucket 50 to the body 30.

In addition, the body part 30 may include a base 31 forming the bottom of the cleaner body 10, the base 31 providing a space for mounting the dust bucket 50 and the battery unit 38, the filter unit 39, and the main motor 35.

The base 31 may be formed of a front half 312, a center 311, and a rear half 313, and formed to have a predetermined width, thereby providing a space in which the dust bucket 50, the battery unit 38, the filter unit 39, and the like can be installed.

The center portion 311 of the base 31 may be formed in a planar shape and disposed between the front half 312 and the rear half 313. At this time, the front half 312 and the rear half 313 may be formed to extend in an inclined manner with respect to the central portion 311, and may be formed to be gradually higher in a direction away from an end of the central portion 311.

A terminal mounting portion 311a for arranging the power supply terminal 307 may be formed at one side end of the central portion 311, i.e., at a position adjacent to the moving wheel 60. The terminal mounting portion 311a is formed in a recessed shape and has an open lower surface, and may be configured to be connected to a terminal of a charging device when the battery unit 38 of the vacuum cleaner 1 needs to be charged.

Further, a rear wheel unit 70 may be provided in the center portion 311 at a position adjacent to the rear half portion 313. The rear wheel unit 70 can prevent the cleaner body 10 from turning backward in use of the cleaner 1. The rear wheel unit 70 may maintain the base 31 at a set angle in a stopped state, and thus, in the stopped state where the cleaner body 10 does not travel, the rear wheel unit 70 contacts the floor and the central portion 311 to elastically support the cleaner body 10.

A front half 312 is formed at the front end of the central portion 311. The front half 312 extends from an end of the central portion 311 in a manner to have an upward inclination, and a seating portion 32 may be provided at the front half 312, the seating portion 32 forming a space for receiving the dust bucket 50.

The seating portion 32 may include: a bottom face portion 321 for forming a bottom; and a peripheral edge portion 322 extending upward along the peripheral edge of the bottom portion 321. The peripheral edge portion 322 is opened forward so that the dust bucket 50 can be mounted.

A compression motor assembly 323 for driving the dust compression unit 56 inside the dust bucket 50 may be disposed between the bottom surface portion 321 and the front half 312. When the dust bucket 50 is mounted to the seating part 32, the compression motor assembly 323 and a dust compression unit 56, which will be described in detail below, are connected to each other, thereby bringing the dust compression unit 56 into a drivable state.

The compression motor assembly 323 may include: a compression motor 323a for providing a rotation power; and a compression gear 323b connected to a rotation shaft of the compression motor 323 a. The compression gear 323b may be located at a position eccentric to one side from the center of the bottom portion 321. In addition, a bottom hole 321a having an opening is formed at the bottom portion 321, and a first transmission gear 591, which will be described below, may be located at the bottom hole 321a when the dust bucket 50 is seated. Thus, when the dust tub 50 is installed, the compression gear 323b is combined with the first transmission gear 591, so that the power of the compression motor 323a can be transmitted.

A front wheel 312a may be mounted on a lower surface of the front half 312. The front wheels 312a are positioned forward of the center of the front half 312, and when an obstacle such as a carpet or a threshold is placed forward during movement of the cleaner body 10, the front wheels 312a can facilitate movement of the cleaner over the obstacle. In addition, the front wheel 312a may rotate in contact with the floor surface, so that when the cleaner body 10 is tilted forward, the cleaner body 10 is prevented from being overturned forward.

The rear half portion 313 may be formed to be inclined upward from the rear end of the center portion 311. Accordingly, when the cleaner body 10 starts to move forward for traveling, the cleaner starts to tilt about the moving wheel 60, and the cleaner body 10 can be easily rotated.

The rear half 313 may form at least a part of a rear opening 317 opened and closed by the rear cover 314. The rear cover 314 forms the same curved surface as the lower garnish 315 and the upper garnish 37 for forming the rear half 313 and the appearance of the cleaner body 10 in a state of covering the rear opening 317. The rear cover 314, which is a part of the rear half, may be formed to have the same inclination or curved surface as the rear half 313.

The rear cover 314 may form a portion of the rear surface of the body part 30. Further, the lower end of the rear cover 314 is rotatably coupled to the rear half, and can open and close the rear opening 317 by rotation. In addition, a grill through which air separated from dust while passing through the inside of the cleaner body 10 is discharged is formed at the rear cover 314, whereby air filtered of dust can be discharged.

A base frame is attached to a central portion of the base 31. The base frame is formed to be able to divide a space for arranging the dust bucket 50, a space for disposing the main motor 35, and a space for disposing the battery unit 38 and the filter unit 39.

In detail, the base frame may include a lower frame 33 and an upper frame 34.

The lower frame 33 is mounted to the center portion 311, and may include: a first partition 331 that partitions a part of the internal space of the main body 30 in the front-rear direction; and a pair of first sidewalls 332 extending from both side ends of the first barrier 331. In addition, a main PCB 301 for controlling the driving of the cleaner 1 as a whole including the main motor 35 and the wheel motor assembly 63, the compression motor assembly 323, and the obstacle detecting member 44 may be provided at the front surface of the first partition 331.

A lower seating member 300 may be provided at a front surface of the first barrier 331. The lower seating member 300 may be formed in a depressed manner at the center thereof so as to support the side of the dust bucket 50 when the dust bucket 50 is installed. In addition, the main PCB 301 mounted to the front surface of the first barrier 331 may be accommodated inside the lower mounting member 300.

A noise filter 302 for removing noise of an input power supplied to the main PCB 301 is disposed at a rear surface of the first partition 331. The noise filter 302 may be an EMI filter.

At this time, a first partition hole 331a, which becomes a flow passage of air, is formed in the first partition 331 between the main PCB 301 and the noise filter 302. Accordingly, the main PCB 301 and the noise filter 302 can be naturally cooled by the air passing through the first barrier hole 331 a.

The lower frame 33 is opened upward and rearward in a state of being mounted on the base 31, and an upper frame 34 is mounted on an upper end of the lower frame 33. In addition, the upper frame 34 shields the upper surface of the lower frame 33, which is open, thereby forming a space for accommodating the battery unit 38 and the filter unit 39. Further, a space provided with a main motor 35 for sucking air will be formed.

In detail, the upper frame 34 may include: a cover plate 341, a second spacer 342, and a second sidewall 343.

The second partition 342 partitions an upper space of the main body 30 in a front and rear direction, a space for installing the pre-filter assembly 36 connected to the dust bucket 50 is formed in a front of the second partition 342, and a space for installing the main motor 35 is formed in a rear of the second partition 342.

In addition, a second partition hole 342a is formed at the second partition 342 so that, when the main motor 35 is driven, the air passing through the dust tub 50 can filter fine dust while passing through the pre-filter assembly 36, and the filtered air passes through the main motor 35 while passing through the pre-filter assembly 36.

A front partition wall 344 extending forward is formed at both ends of the second partition 342 to form a space for receiving the pre-filter assembly 36.

The pre-filter assembly 36 may include: a prefilter case 361 closely attached to the dust bucket 50; a pre-filter body 362 coupled to the pre-filter housing 361 and accommodating a filter member 363 therein.

The prefilter case 361 and the prefilter main body 362 may be coupled to each other in a rotatable manner so as to form a space capable of accommodating the filter element 363 therein in a coupled state. Thus, the filter member 363 can be attached to and detached from the prefilter main body 362 by opening the prefilter case 361.

The filter member 363 is configured to filter fine dust, which is not separated from the dust bucket 50, for the first time of filtering dust and foreign substances, for the second time, and to remove fine dust in the air flowing into the inside of the main motor 35. In addition, the air passing through the filter member 363 and the main motor 35 may be filtered of the ultra fine dust for a third time in a filter unit 39, which will be described in detail below, and the battery unit 38 is cooled and then discharged to the outside.

The pre-filter assembly 36 is described in more detail with reference to fig. 6, and the pre-filter assembly 36 has a structure in which the filter member 363 is accommodated inside the pre-filter body 362 and shielded by the pre-filter housing 361.

The pre-filter case 361 may be exposed forward in a state where the pre-filter assembly 36 is attached to the upper frame 34. In addition, the front surface of the pre-filter housing 361 has a curved surface corresponding to the outer side surface of the dust tub 50. Thus, when the dust bucket 50 is mounted to the main body 30, the exposed front surface of the pre-filter housing 361 is supported so as to surround the outer surface of the dust bucket 50. At this time, the front surface of the pre-filter housing 361 may be formed in an inclined manner so as to be able to contact with the outer side surface of the dust tub 50 according to the inclined installation state of the dust tub 50. Thus, when the dust bucket 50 is mounted, a stable supported state of the dust bucket 50 can be maintained by the front surface of the pre-filter housing 361.

A filter hole 361a is formed in the pre-filter housing 361 at a position corresponding to the discharge port 512 of the dust bucket 50. The filter hole 361a may be formed in a size and shape corresponding to the discharge port 512. Further, a casing seal 361b is formed on the periphery of the filter hole 361a so as to be in close contact with the periphery of the discharge port 512, whereby the dust bucket 50 and the pre-filter casing 361 are in close contact with each other to prevent air leakage.

A locking groove 361c is further formed in the pre-filter housing 361. The locking groove 361c is configured to receive the upper locking member 57, and the upper locking member 57 is configured such that the upper locking member 57 protrudes toward the outer side surface of the dust bin 50 when the dust bin 50 is mounted to the main body 30. Therefore, the locking groove 361c may be formed to correspond to the protruding shape of the upper locking piece 57.

Further, first restrictions 361d may be formed on both side surfaces of the prefilter case 361, and the first restrictions 361d may allow the prefilter body 362 to be kept in a closed state. The first constraining part 361d may be formed in a concave shape so as to be able to receive a second constraining part 362c which will be described below, and a constraining protrusion 361e may be protrusively formed at the first constraining part 361 d.

Further, a housing seal 361g may be further provided on the periphery of the open rear end of the prefilter housing 361. The case seal 361g is closely attached to the front surface of the second partition 342 so that the air passing through the pre-filter assembly 36 can entirely pass through the second partition hole 342a without leakage.

A first rotation coupling portion 361f may be formed at a lower end of the pre-filter housing 361. The first rotation coupling 361f is for rotatably coupling the pre-filter housing 361 and the pre-filter body 362, and the first rotation coupling 361f may protrude in a pair at a lower end of the pre-filter housing 361. Further, the second rotation coupling part 362e may be positioned between a pair of the first rotation coupling parts 361f, and the first rotation coupling parts 361f may be rotatably shaft-coupled to both ends of the second rotation coupling part 362 e.

The pre-filter body 362 may include: a main body grill 362a having an open front surface and a grill-shaped rear surface, and closely attached to the second partition 342; a body rim 362b extending along the periphery of the body grill 362a for receiving the pre-filter housing 361.

A seal may be provided as needed around the periphery of the main body grill 362a so that the second partition 342 and the pre-filter main body 362 are in close contact with each other in an airtight state. Also, the main body grill 362a is formed in a grill shape such that the air flowing in through the filter hole 361a can pass through the second partition hole 342a after passing through the filter member 363.

The main body edge 362b may be closely attached to an outer surface of the pre-filter case 361, and may be formed such that a width of a lower end thereof is greater than a width of an upper end thereof and a side surface thereof is inclined, so that the pre-filter case 361 can be combined in an inclined state. In addition, second binding portions 362c disposed at the first binding portions 361d may be formed at both side surfaces of the body edge 362 b.

The second binding portion 362c may be formed to protrude forward from both sides of the body edge 362b, and may be formed in a shape capable of being received inside the first binding portion 361 d. Further, a restriction hole 362d is formed in the second restriction portion 362c, and when the second restriction portion 362c is received in the second restriction portion 362c, the restriction protrusion 361e is inserted into the restriction hole 362d, so that the pre-filter case 361 and the pre-filter main body 362 can be maintained in a closed state.

Further, the second rotation coupling part 362e may be formed at a lower end of the body edge 362 b. The second rotation coupling part 362e is rotatably coupled to the first rotation coupling part 361f, and is configured to allow the prefilter case 361 and the prefilter main body 362 to rotate about the first rotation coupling part 361f and the second rotation coupling part 362e at the lower end. Accordingly, the pre-filter case 361 can be opened and closed by rotating with reference to the lower end of the pre-filter body 362, and the filter member 363 can be replaced by opening the pre-filter body 362.

The filter member 363 may be formed in various shapes capable of collecting various kinds of fine dust, and may be formed in a shape capable of being accommodated in the inner space of the pre-filter main body 362.

The pre-filter assembly 36 may be installed on the upper frame in a state of accommodating the filter member 363, support the dust tub 50 in a state of being installed on the upper frame 34, perform a second filtering of the air passing through the dust tub 50, and supply it to the main motor 35.

A pair of second sidewalls 343 may extend rearward from a rear surface of the second barrier 342. The second sidewall 343 forms a space for disposing the main motor 35, and also forms a space for disposing the sub PCB 305.

In detail, the main motor 35 is disposed between the pair of second side walls 343, and the sub PCB 305 may be mounted on an outer side surface of any one of the second side walls 343. That is, as shown in fig. 7, the main motor 35 and the sub PCB 305 may be disposed in the divided spaces with reference to the second side wall 343.

In addition, the second partition holes 342a may be formed in a region between a pair of the second sidewalls 343, whereby the air passing through the second partition holes 342a will be able to entirely pass through the main motor 35.

In addition, a plate hole 341a may be formed in the cover plate 341 for forming the bottom of the upper frame 34. The plate hole 341a may be formed in a region between a pair of the second sidewalls 343. Thus, the air flowing into the space for accommodating the main motor 35 through the second partition holes 342a passes through the plate holes 341a to the space for accommodating the battery cells 38 formed in the lower frame 33, thereby cooling the battery cells 38.

The main motor 35 is provided in a space formed by the upper frame 34, and is located rearward of the center of gravity of the main body 30 and the center of the moving wheel 60. Therefore, in the mounting structure of the main motor 35, in a state where no external force is applied, the weight of the main motor 35 is used to apply a load so that the main body 30 is rotated in a direction in which the rear end thereof becomes lower.

The main motor 35 is disposed long in the front-rear direction so that the center of gravity of the main body 30 is located behind the center of rotation of the moving wheel 60, and can provide a rotational torque for rotating the main body 30 in the clockwise direction.

In addition, the main motor 35 has a combined fan and motor structure inside a case for guiding the flow of air. The structure of the main motor 35 may be various structures capable of forcing air to flow.

In addition, the main motor 35 may be fixedly mounted on the upper frame 34 by means of the motor support member 351. The motor support member 351 may be formed of rubber or a material having elasticity, which may attenuate vibration generated when the main motor 35 is driven, and may reduce noise caused thereby.

A motor cover 352 surrounding at least a portion of the main motor 35 may be further provided at the rear of the main motor 35. A plurality of holes are formed at the motor cover 352 so that the air forcibly blown by the main motor 35 passes therethrough. Further, a sound absorbing member is provided between the motor cover 352 and the main motor 35, so that noise generated when the main motor 35 is driven can be reduced.

The main motor 35 is disposed in a space formed in the upper frame 34 so as to be offset to one side on which the sub PCB 305 is disposed. That is, the main motor 35 is disposed adjacent to the second side wall 343 on which the sub PCB 305 is mounted, among the pair of second side walls 343. Thereby, a relatively wide space may be formed between the main motor 35 and the second side wall 343 of the second side wall 343 which is more distal than the sub PCB 305.

At least a portion of the plate hole 341a may be exposed through an area between the main motor 35 and the second side wall 343 farther from the sub PCB 305. The first separator hole 331a may be formed in a region extending along the same line as the plate hole 341 a.

Accordingly, the air discharged from the main motor 35 is discharged through the motor cover 352, and is naturally directed to the space between the second sidewalls 343 on the other side where the plate hole 341a is formed, since one of the two side directions is blocked by the adjacent second sidewalls 343, so that the air can smoothly flow to the first partition hole 331a, and the flow noise can be reduced.

In addition, a frame cover 36 may be provided at the upper frame 34. The frame cover 36 may cover an open upper surface of the upper frame 34. Accordingly, in a state where the frame cover 36 is attached, a space for accommodating the main motor 35 can be sealed, and the air flowing into the second partition hole 342a by the driving of the main motor 35 can pass through the main motor 35 and be entirely discharged to the plate hole 341 a.

In addition, the second sidewall 343 at one side of the pair of second sidewalls 343 may be provided with the sub PCB 305. The sub PCB 305 is used to control the driving of the sub motor 201, and the sub motor 201 can drive the agitator inside the suction device 20. The sub motor 201 may use a BLDC motor which is inexpensive and easy to control, and the sub PCB 305 may decompress the input power to supply the input power to the sub motor 201 in a manner suitable for the sub motor 201.

The sub PCB 305 is separately provided in a separate space from the main PCB 301 on the upper frame 34, and may be mounted as needed. That is, in the case where the sub motor 201 is not provided to the suction device 20, the sub PCB 305 may not be mounted, and thus, the main PCB 301 may be used in a common manner.

In addition, the upper portion of the cleaner body 10 may be formed of an upper decoration 37. The upper decoration 37 may shield the upper portion of the base 31, which is open, thereby shielding the internal structure mounted on the base 31. Further, the upper decor 37 serves to form an external appearance of a portion of the upper surface of the cleaner body 10, which will form a portion shielded by the cover member 40 and an upper external appearance of the remaining cleaner body 10 except for the moving wheel 60 and the dust bucket 50.

In addition, the upper decor 37 may be combined with a lower decor 315, which will be described below, and may be combined with the lower decor 315 to form a part of the side appearance of the cleaner body 10.

Fig. 9 is an exploded perspective view of the coupling structure of the cleaner body, the moving wheel, and the detecting unit as viewed from one direction. Fig. 10 is an exploded perspective view of the coupling structure of the cleaner body, the moving wheels, and the detecting unit, as viewed from another direction. Fig. 11 is a side view showing an installation state of the cleaner body and the cog assembly. Fig. 12 is a side view of the cleaner body.

As shown, a pair of side portions 316 extending upward are formed on both side ends of the base 31. The side portion 316 may provide an installation space of the moving wheel 60 and the wheel motor assembly 63 for driving the moving wheel 60. The side portion 316 may be provided with a pair at left and right sides, and the structure for mounting the wheel motor assembly 63 and the moving wheel 60 may be the same.

The side portion 316 may extend to a position higher than the center of the moving wheel 60 and may be formed in a smaller size than the moving wheel 60. A wheel boss 316a (wheel boss) rotatably mounting the moving wheel 60 may be provided at the center of the side portion 316. The wheel post 316a may extend from the side 316 toward the center of the moving wheel 60. In a state where the moving wheel 60 is mounted on the wheel boss 316a, the moving wheel 60 may be rotated by the wheel motor assembly 63 and the gear teeth 64. In addition, the cleaner body 10 may be rotated with the wheel cylinder 316a as an axis.

In addition, the wheel motor assembly 63 may be disposed at a side of the wheel boss 316 a. When the moving wheel 60 is mounted to the wheel post 316a, the wheel motor assembly 63 may be shielded by the moving wheel 60. That is, the wheel motor assembly 63 may be disposed in a space formed between the side portion 316 and the moving wheel 60.

The wheel motor assembly 63 may include: a wheel motor 632; a wheel motor housing 631; and a plurality of moving gears (not shown) provided inside the gear housing 631 to transmit power to the gear teeth 64.

The wheel motor 632 may be formed of a BLDC motor whose rotation control is easy and light. In addition, a plurality of moving gears for connecting the rotation shaft of the wheel motor 632 and the gear teeth 64 of the moving wheel 60 decelerate the rotation of the wheel motor 632 and transmit it to the moving wheel 60.

In addition, the wheel motor assembly 63 may be installed at a position more rearward than the rotation center of the moving wheel 60. In detail, a case mounting groove 633 may be formed in the wheel motor case 631 to be recessed inward. The case mounting groove 633 is recessed in a shape corresponding to the wheel post 316a, and is formed to be able to receive at least a portion of the wheel post 316 a. That is, in a state where the wheel motor assembly 63 is mounted, the case mounting groove 633 is mounted to surround the rear half of the outer side surface of the wheel post 316a and is disposed at the rear side of the wheel post 316 a. Accordingly, the center of gravity of the cleaner body 10 can be positioned further rearward in a state where the wheel motor unit 63 is attached to the cleaner body 10.

Further, the wheel motor 632 is located at a lower portion of the wheel motor housing 631, and a plurality of moving gears are located above the wheel motor. That is, by disposing the wheel motor 632, which is relatively heavy, at the lower side, the center of gravity of the cleaner body 10 can be positioned at a lower position.

A lower garnish 315 may be installed at the side portion 316, and the lower garnish 315 forms the appearance of the body portion exposed to the outside of the moving wheel 60. The lower decoration 315 may be formed along at least a portion of the circumference of the moving wheel 60, and may have a curved surface continuous with the curved surface of the moving wheel 60, thereby forming a smooth appearance.

A plurality of ribs 316b extending in the vertical direction may be further formed on an inner surface of the side portion 316, that is, a surface opposite to the surface on which the boss 316a is formed. By forming the plurality of reinforcing ribs 316b, the side portion 316 is prevented from being damaged by a load applied in a side direction. Further, the stable coupling state of the moving wheel 60 can be maintained.

In addition, a detection portion 306 may be further provided on one side of the inner side surface of the side portion 316. The detection unit 306 can control the driving of the moving wheel 60 by detecting the moving state or posture of the cleaner body 10. The detection unit 306 is used to detect the movement of the cleaner body 10, and may include a gyro sensor or an acceleration sensor, which are frequently used. Of course, various sensors or devices capable of detecting the movement of the body 10 may be used in the detection unit 306, in addition to the gyro sensor and the acceleration sensor.

The detection unit 306 may be attached to an upper portion of an inner surface of the side portion 316. The detection section 306 may include: a detection PCB 360a provided with a gyro sensor; a sensing part fixing member 306b for fixing the sensing PCB 360a and mounted to the side part 316. Further, a pair of fixing hooks 306c may be provided at the detection part fixing member 306b, and the pair of fixing hooks 306c are inserted and fixed into a detection part fixing port 316c formed at the side part 316.

The detection PCB 360a may be configured to control driving of the wheel motors 632 provided on both sides. That is, the structure for controlling the gyro sensor and the wheel motor 632 may be constructed using one PCB.

As described above, the detection unit 306 may be fixedly attached to the side portion 316, and the attachment position of the detection unit 306 may be disposed on a side away from the rotation center of the moving wheel 60, which is the rotation shaft of the cleaner body 10. Thus, when the cleaner body 10 is running or stopped, the inclination of the cleaner body 10, which is the rotation angle, can be effectively detected.

In a state where the cleaner body 10 is stopped, the center of gravity is located rearward with respect to the center of the moving wheel 60. Therefore, the cleaner body 10 is maintained in a state of being rotated clockwise with respect to the center of the moving wheel 60. Further, the cleaner body 10 is maintained in a state of being supported by the rear wheel unit 70 contacting the floor surface. Thereby, the bottom surface of the cleaner body 10, particularly, the front half 312 can maintain a predetermined angle.

In such a state, the detection unit 306 determines that the cleaner body 10 is in a non-running stopped state based on the inclination of the cleaner body 10, that is, the angle of the front half 312.

Specifically, the wheel motor unit 63, the battery unit 38, and the main motor 35 may be disposed rearward with respect to the center of the moving wheel 60. Therefore, the center of gravity G of the cleaner body 10 is located rearward of the rotation center C of the moving wheel 60, and naturally, the cleaner body 10 is rotated clockwise with respect to the rotation center of the moving wheel 60.

Further, the rear half of the cleaner body 10 may be supported by a rear wheel unit 70 mounted to the rear half 313 of the base 31. Thus, the cleaner body 10 can maintain the set angle α without being excessively rotated clockwise.

In particular, in view of the characteristics of the cleaner 1, when dust is accumulated in the dust bucket 50 after use, the center of gravity of the cleaner body 10 is always positioned in the rear half and supported by the rear wheel unit 70, so that the cleaner body 10 can maintain a certain slope with respect to the floor regardless of the amount of dust in a state where the cleaner body 10 is stopped.

In this state, the detection unit 306 detects the angle of the front half 312, and when it is confirmed that the set angle α is maintained, it is determined that the cleaner body 10 is kept in the set posture in the stopped state. Thus, the main PCB 301 keeps the wheel motor assembly 63 in a stopped state by not operating.

When the user grips the handle 23 and moves it forward in order to use the vacuum cleaner 1, the vacuum cleaner body 10 is inclined at the position of the handle 23. That is, the cleaner body 10 is rotated counterclockwise, and the front half 312 is moved downward.

At this time, the detection unit 306 detects a change in the angle of the front half 312, and determines that the cleaner 1 starts moving based on the change in the angle. Accordingly, the main PCB 301 determines that the cleaner body 10 moves, and the wheel motor assembly 63 is driven to rotate the moving wheel 60.

When the movement of the cleaner body 10 is stopped again, the cleaner body 10 is rotated to the initial state by the center of gravity, and the detection unit 306 confirms that the angle of the front half 312 matches the angle α set at the time of the stop. Accordingly, the main PCB 301 determines that the cleaner body 10 has finished moving, and stops the wheel motor assembly 63.

In addition, as shown in fig. 10, the bottom surface of the cleaner body 10, that is, the central portion 311 and the front and

rear halves

312 and 313 of the base 31 may have a predetermined angle. The angles of the central portion 311, the front half 312, and the rear half 313 may be variously set. Hereinafter, the angle of the base 31 will be described in a state where the cleaner body 10 is stopped without moving.

For example, the front half 312 may be formed to be inclined at an angle of 27 ° with respect to the ground. By making the front half 312 have an angle of 27 °, even if the cleaner body 10 rotates due to pulling the suction hose 24, the front half 312 can be prevented from colliding with the floor as much as possible. Of course, the front half 312 may touch the floor surface by a sudden operation, but in this case, the cleaner body 10 may be smoothly moved by the rolling motion of the front wheels 312 a. The front half 312 may be inclined to easily straddle a carpet, a doorsill, or the like while the cleaner body 10 is traveling.

In addition, the central portion 311 may be formed to be inclined at an angle of 7 ° with respect to the floor surface in a state where the cleaner body 10 is stopped. When the moving wheel 60 is rotated by driving of the wheel motor 632 and the cleaner body 10 is driven to travel, the cleaner body 10 is rotated counterclockwise by an angle of approximately 7 °, and thus, the central portion 311 is kept horizontal to the floor surface in a state where the cleaner body 10 is traveling, and the bottom of the cleaner can be prevented from being locked by foreign substances in the room.

In addition, the rear half 313 may be formed to be inclined at an angle of 10 ° with respect to the floor surface in a state where the cleaner body 10 is stopped. Accordingly, in a state where the cleaner body 10 is stopped, the cleaner body 10 is rotated clockwise by the gravity center of the cleaner body 10 which is eccentric rearward, and is placed on the floor.

That is, in the stopped state, the cleaner body 10 reaches a state where the rear half portion 313 has moved downward due to the center of gravity, and thus, a stable supported state can be maintained by the rear wheel unit 70 regardless of the amount of dust stored in the dust bucket 50.

When the suction hose 24 is pulled to rotate the cleaner body 10, the rear half 313 is inclined to prevent the rotation of the cleaner body 10 from being restricted due to the collision of the floor with the rear half 313.

In addition, the moving wheel 60 may include: a wheel frame 61 rotatably mounted to the wheel boss 316a of the side portion 316, the gear teeth 64 being mounted to the wheel frame 61; and a wheel garnish 62 coupled to an outer side surface of the wheel frame 61 to form an appearance of the moving wheel 60.

The wheel frame 61 forms a substantial skeleton of the moving wheel 60 and performs a rolling motion in contact with the ground, and a plurality of ribs 611 for reinforcing the strength of the entire wheel frame 61 may be provided in a radial shape on the entire inner and outer side surfaces of the wheel frame 61. A gear tooth mounting portion 612 for fixing the gear teeth 64 is formed at the center of the wheel frame 61. The gear teeth 64 may be rotatably mounted to the wheel boss 316a in a state of being fixed to the wheel frame 61.

In addition, a wheel opening 621 is formed at the center of the wheel decoration 62, and a coupling member for coupling the gear teeth 64 and the wheel frame 61 may be fastened through the wheel opening 621. Further, a wheel cover 623 may be installed at the wheel opening 621 to shield the wheel opening 621.

In addition, as described with reference to fig. 11, the cleaner body 10 may have a vertical extension line L extending perpendicular to the floor (or the cleaning surface) with reference to the rotation center C of the moving wheel 60_VDivided into a front and a rear.

The cleaner body 10 may have a horizontal extension line L extending horizontally from the floor (or the cleaning surface) with reference to the space between the main motor 35 and the battery unit 38_HDivided into an upper and a lower.

Using said vertical extension line L_VAnd a horizontal extension line L_HThe cleaner body 10 may be divided into four regions, i.e., four quadrants. Hereinafter, with the above-mentioned vertical extension line L_VAnd a horizontal extension line L_HFor reference, the main structure of the cleaner body 10 will be described.

The main motor 35 may be located in the first quadrant of the cleaner body 10, i.e., the vertical extension line L_VRear and horizontal extension line L of_HAbove (b). In addition, the battery unit 38 may be located in the fourth quadrant of the cleaner body 10, i.e., the vertical extension line L_VRear and horizontal extension line L of_HBelow (c). Further, a hole connecting the place of the connector 401 or the suction hose 24 may be located at the second quadrant of the cleaner body 10, i.e., the vertically extended line L_VAnd the horizontal extension line L_HAbove (b). In addition, at least a portion of the bottom surface of the dust bucket 50 may be positioned in a third quadrant of the cleaner body 10, i.e., the vertical extension line L_VAnd the horizontal extension line L_HBelow (c).

With the arrangement as described above, the center of gravity G of the cleaner body 10 as a whole can be located on the vertically extending line L_VUpper rear side. At this time, the center of gravity G may be located at the levelExtension line L_HBut it is necessary to be located at a position where the rear end of the cleaner body 10 or the rear wheel unit 70 can be rotated to contact the floor surface in a state where the travel of the cleaner 1 is stopped.

Also, the center of gravity G may be configured to enable the rear end of the cleaner body 10 or the rear wheel unit 70 to contact the floor regardless of the amount of dust collected in the interior of the dust bucket 50 by using the cleaner 1 in a state where the travel of the cleaner 1 is stopped.

And, by positioning the wheel motor assembly 63 also at the vertical extension line L_VCan be more easily arranged behind the center of gravity G.

Fig. 13 is a bottom view of the cleaner body. Further, fig. 14 is an exploded perspective view showing a coupling structure of the rear wheel unit of the embodiment of the present invention. Further, fig. 15 is a sectional view showing an operating state of the rear wheel unit.

As shown, a rear wheel unit 70 may be provided on the base 31. A base recessed portion 311b recessed inward is formed at the rear end of the central portion 311 of the base 31. Further, wheel mounting portions 311c for mounting the rear wheel unit 70 are formed at both side front ends of the base recessed portion 311 b.

The rear wheel unit 70 is in contact with the floor surface in a state where the cleaner body 10 is not moved, and maintains the set posture of the cleaner body 10. Further, the rear wheel unit 70 contacts the floor surface in a state where the cleaner body 10 is rotated to lift the front half 312, and provides elasticity for rotating the cleaner body 10 in a reverse direction, so that the cleaner body 10 can be prevented from being excessively rotated or overturned.

The rear wheel unit 70 may include a wheel support 71 and a rear wheel 72. The wheel support 71 allows the rear wheel 72 to be rotatably mounted while being in contact with the lower surface of the base 31, thereby providing predetermined elasticity.

In detail, the wheel support 71 may include: a pair of legs 73 provided on the left and right sides; a wheel receiving portion 74 that connects front ends of the legs 73, the rear wheel 72 being attached to the wheel receiving portion 74; and an elastic part 75 provided between the legs 73, contacting the base 31 and providing elasticity.

The legs 73 for mounting the wheel supporter 71 may be respectively provided at both sides spaced apart from each other, and leg protrusions 731 protruding outward may be formed at upper ends of the legs 73. The leg protrusion 731 may be inserted into the inner side of the wheel mounting portion 311c, and the wheel support 71 may be rotatably mounted with the leg protrusion 731 as an axis.

The wheel accommodating portion 74 is provided at the front end of the pair of legs 73, and is configured to connect the pair of legs 73 to each other. Further, the wheel receiving portion 74 may be formed in a shape that is open downward, and provides a space in which the rear wheel 72 can be received. Further, shaft mounting portions 741 may be further formed at both ends of the wheel receiving portion 74, and the rotating shaft 721 of the rear wheel 72 may be rotatably coupled to the shaft mounting portions 741. Thus, the rear wheel 72 can be rotated while being accommodated inside the wheel accommodating portion 74.

The elastic portion 75 is disposed between the legs 73, and may extend from the front half toward the rear half of the legs 73. Further, the elastic part 75 may be extended with a predetermined curvature such that an extended end thereof faces the base 31. Also, the elastic part 75 may be formed in a plate shape and may be extended to be elastically deformable when being in contact with the base 31.

In a state where the cleaner 1 is stopped, the extended end of the elastic part 75 may contact the base 31, and at this time, the rear wheel 72 may contact the floor. Thus, the cleaner body 10 can be supported by the pair of moving wheels 60 and the rear wheel 72 behind the moving wheels 60, so that a stable state can be maintained.

In addition, when the cleaner body 10 is moved to rotate the cleaner body 10 about the moving wheel 60, the elastic part 75 may be elastically deformed, thereby preventing the cleaner body 10 from being excessively rotated or overturned. When the vacuum cleaner 1 is stopped after being moved and the external force for rotating the vacuum cleaner 1 is removed, the vacuum cleaner body 10 is returned to the original position by the restoring force of the elastic part 75.

A terminal mounting portion 311a is formed on a side of the base 31 corresponding to the power supply terminal 307, and the terminal mounting portion 311a exposes the power supply terminal 307 to a lower side where it can be mounted. The terminal mounting portion 311a is formed such that the lower surface thereof is open, and the power supply terminal 307 can be provided therein. Further, the terminal mounting portion 311a may be located adjacent to the moving wheel 60 on one side, whereby the power supply terminal 307 and the charging device can be aligned by fixing the moving wheel 60 to the charging device.

Fig. 16 is a rear view of the cleaner body with the rear cover open. Fig. 17 is an exploded perspective view showing a coupling structure of the battery and the filter according to the embodiment of the present invention.

As shown, in addition, a rear cover 314 may be provided on a rear surface of the cleaner body 10. The rear cover 314 is rotatably attached to the base 31, and the rear opening 317 formed by the base 31 and the upper garnish 37 can be opened and closed by rotation of the rear cover 314.

A rear cover restraint portion 314a selectively fixed to the rear end of the upper garnish 37 may be formed at the upper end of the rear cover 314. Thus, the opening and closing of the rear cover 314 can be operated by the operation of the rear cover restraint portion 314 a.

In addition, cover rotation shafts 314b are formed to protrude from both sides of the lower end of the rear cover 314. The lid pivot 314b is coupled to the base 31, and when the rear lid 314 is opened and closed, the rear lid 314 can be rotated about the lid pivot 314b to open and close the rear opening 317.

In addition, a space for disposing a filter and a battery unit 38 may be formed in a rear half of the cleaner body 10, i.e., from the center to the rear of the moving wheel 60. Further, a space in which the filter unit 39 and the battery unit 38 are accommodated may be defined by the lower frame 33. The lower frame 33 includes a first partition 331 and a first sidewall 332, and a space for disposing the filter unit 39 and the battery unit 38 may be formed by combining the base 31 and the upper frame 34.

The filter unit 39 may include: a filter housing 391 for forming a contour; a filter member 392 disposed inside the filter housing 391. The filter member 392 serves to filter ultra-fine dust (dust defined as particles smaller than dust and fine dust) in the air passing through the dust bucket 50 and the main motor 35, and a HEPA filter may be generally used. Of course, various kinds of filters capable of filtering ultra fine dust may be used as the filter member 392 according to actual needs.

The filter housing 391 may be disposed above the space and may be in contact with a bottom surface of the upper frame 34 in an attached state. Accordingly, all of the air flowing into the space through the plate holes 341a of the upper frame 34 can pass through the filter unit 39 and be purified, and the air can be discharged to the outside after cooling the battery unit 38.

In addition, a portion of the air flowing into the space through the plate hole 341a may move forward through the first partition hole 331a of the first partition 331, and in this process, the air may cool the noise filter 302 and the main PCB 301.

A filter handle 393 may be formed at a rear end of the filter housing 391, and when the rear cover 314 is opened, the filter handle 393 is exposed, and a user may grip and pull the filter handle 393 to separate the filter unit 39 from the space.

In addition, filter grooves 394 may be formed at both side surfaces of the filter housing 391. The filter groove 394 may extend in a length direction from a rear end of the filter housing 391, and may be inserted into the filter guide 333 formed on the second side wall 343.

That is, the filter housing 391 is inserted in a state where the filter groove 394 is aligned between the filter guides 333 formed on both side surfaces when it is mounted in the space. Thereby, the filter housing 391 can be completely inserted into the space along the filter guide 333, and in this state, the installation state in contact with the floor surface of the upper frame 34 can be maintained.

The battery unit 38 can supply all the power required for the driving of the vacuum cleaner 1. The battery unit 38 may be constituted by a secondary battery that can be charged and discharged. Of course, a power line (not shown) for supplying a commercial power may be additionally connected to the battery unit 38.

In addition, although not shown, in the case of a model in which the battery unit 38 is not provided, a wire winder (not shown) on which an electric wire for supplying power is wound may be disposed instead of the battery unit 38. And, the center of gravity may be moved backward by the winder.

The battery unit 38 may be composed of a battery case 381 and a secondary battery housed inside the battery case 381. The secondary battery 383 may be arranged in alignment with the inside of the battery case 381.

The battery case 381 may be formed in a size capable of being received in the space, and a battery grill 381a may be formed on upper and lower surfaces thereof and at a position corresponding to the rear cover 314. Thus, the air flowing into the space through the filter unit 39 can pass through the inside of the battery case 381 by the battery grill 381a, and in the process, the secondary battery 383 is cooled.

Further, a battery handle 382 may be formed on a rear surface of the battery case 381, and a user can hold the battery handle 382 when the battery unit 38 is drawn in and out from the space. Also, battery grooves 384 may be formed on both side surfaces of the battery case 381. The battery groove 384 may be recessed at both side surfaces of the battery case 381, and extend rearward at a front end of the battery case 381.

The battery groove 384 is adapted to be inserted into a battery guide 334 formed at a lower portion of the first sidewall 332, and when the battery unit 38 is mounted, the battery guide 334 enables the battery unit 38 to be inserted along the battery groove 384, so that the battery unit 38 can be correctly mounted.

In addition, the battery guides 334 at both sides of the first sidewall 332 may be provided with a battery restraint portion 335 and a battery restraint member 336, respectively. The battery restraint portion 335 and the battery restraint member 336 are used to keep the battery unit 38 mounted in the space, and the battery restraint portion 335 and the battery restraint member 336 are located at positions facing each other and can be locked and restrained in battery restraint grooves 385 formed on both side surfaces of the battery case 381.

Specifically, the battery restraint portion 335 may be formed by cutting a portion of the first sidewall 332 to form a first elastic portion 335a, and a first restraint protrusion 335b may be formed at an end of the first elastic portion 335 a. Thus, the first elastic part 335a may be elastically deformed during the insertion of the battery cell 38, and the first restriction protrusion 335b may be caught and restricted in the battery restriction groove 385 when the battery cell 38 is completely inserted, thereby restricting one side of the battery cell 38.

The battery restraint member 336 is fixedly attached to the first side wall 332 facing the battery restraint portion 335. A side hole 334a is formed in the first side wall 332 to which the battery constraining member 336 is mounted in an open manner, and the side hole 334a is formed in a shape corresponding to the battery constraining member 336. In addition, a restraining member fixing part 334b capable of press-fixing a peripheral edge of the battery restraining member 336 may be formed at the side hole 334 a. Thus, the battery constraining member 336 can be fixed and attached by press-fitting, and the battery constraining member 336 can be held in a fixed state by forming hooks at the end portions of the constraining member fixing portions 334 b.

The battery constraining member 336 may be molded of a different kind of material than the battery constraining portion 335. For example, the battery restraint portion 335 may be integrally molded with the lower frame 33, and may be injection-molded using an ABS material. In addition, the battery constraining member 336 may be injection molded using a POM material. By forming the battery constraining member 336 and the battery constraining section 335 of different materials from each other and separately constituting each other, it is possible to prevent the constraining portion from being damaged when the battery cell 38 is mounted, and to perform the coupling more effectively.

The cell restraining member 336 may include a restraining member edge 336a formed in a quadrangular shape corresponding to the side hole 334a, and the restraining member edge 336a is held in a state of being fixedly mounted to the side hole 334a by a peripheral edge of the cell restraining part 335. In addition, the battery constraining member 336 may include a second elastic part 336b and the second constraining protrusion 336 c.

The second elastic part 336b and the second restricting protrusion 336c may be formed in shapes corresponding to the first elastic part 335a and the first restricting protrusion 335 b. That is, the second elastic part 336b may be formed by cutting the inside of the battery constraining member 336 and may have elasticity by extending a predetermined length. In addition, a second restriction protrusion 336c may be formed at an end of the extended second elastic part 336 b.

Thus, the second elastic portion 336b is elastically deformable during the insertion of the battery cell 38, and when the battery cell 38 is completely inserted, the second restraint projection 336c is locked and restrained in the battery restraint groove 385, so that the battery cell 38 can be restrained.

In addition, a battery terminal 331b may be provided at a lower end of the first separator 331, and the battery terminal 331b may be connected to the battery cell 38 in a state where the battery cell 38 is completely inserted. The battery terminal 331b may protrude toward the insertion direction of the battery cell 38 and be combined with the front surface of the battery cell 38. In addition, the battery terminal 331b may be electrically connected to the battery unit 38, and may supply power for driving the internal structure of the cleaner 1.

A holder 371(holder) may be provided above the rear opening 317 shielded by the rear cover 314. The holder 371 is used to fixedly mount the extension pipe 22 for storage when the vacuum cleaner 1 is not in use, and the holder 371 may be formed such that an opening 371a thereof becomes narrower from the upper side of the opening toward the lower side.

Further, the holder 371 may be separately molded from the upper decor 37, and may be insert-mounted to the upper decor 37. The extension pipe holder 371 is additionally fixed to the main body 30 by a holder fixing member 371b, and is prevented from being damaged when an impact or load is applied due to the installation of the extension pipe 22. The holder 371 may be formed of a metal material. The holder 371 may be formed by die-casting, thereby enabling higher strength.

Fig. 18 is a sectional view of the cleaner body in a state before the battery is mounted. Fig. 19 is a sectional view of the cleaner body in a state where the battery is mounted.

As shown in fig. 18, before the battery unit 38 is mounted, the battery restraint portion 335 and the battery restraint member 336 are disposed at positions facing each other. Further, the first and second

elastic portions

335a and 336b are in a state where no external force is applied, and the first and

second restriction protrusions

335b and 336c are in a state of protruding toward the inner space of the lower frame 33.

In this state, the user can expose the space by opening the rear cover 314, and install the battery unit 38. After the rear cover 314 is opened, the battery unit 38 is inserted into the space. At this time, the battery unit 38 may be slidably inserted in a state where the battery guide 334 and the battery groove 384 are aligned, and when the battery unit 38 is completely inserted, the front surface of the battery unit 38 is coupled with the battery terminal 331b, so that power can be supplied to the structure inside the cleaner body 10.

In a state where the battery unit 38 is completely inserted and mounted, as shown in fig. 19, the front surface of the battery unit 38 is in a state of being in contact with the first partition 331. During the insertion of the battery cell 38, the first and second

elastic parts

335a and 336b are elastically deformed in the outward direction. In addition, in a state where the battery cell 38 is inserted, the battery constraining grooves 385 formed on both side surfaces of the battery case 381 are inserted into the first and second constraining

protrusions

335b and 336c, thereby maintaining a fixed state.

Fig. 20 is a perspective view of the cover member. Fig. 21 is an exploded perspective view of the cover member. Further, fig. 22 is a partial cross-sectional view showing a coupling structure of the cover member and the obstacle detecting member.

As shown in the drawings, the cover member 40 forms an upper portion of the cleaner body 10, and may have a structure to shield an upper end of the upper decoration 37 and an upper end of the dust bucket 50.

The cover member 40 may be integrally formed of a cover base 42 and an outer cover 43. The cover base 42 forms a lower surface of the outer cover 43 and substantially shields the dust bucket 50 and an open upper surface of the body part 30.

A cover member coupling portion 421 is formed at a rear end of the cover base 42, and the cover member coupling portion 421 may be coupled to an upper end of the body portion 30, more specifically, a rear end of the upper garnish 37. In addition, a connection hole 422 connected to the connector 401 may be formed at the front end of the cover base 42.

An obstacle detecting member 44 may be provided at the cover base 42. The obstacle detecting member 44 is used to detect an obstacle during movement of the cleaner body 10 (during travel of the cleaner body 10), and may be disposed along the front surface of the cover base 42.

The obstacle detecting member 44 may be provided in plurality, and may be provided in plurality on both left and right sides with respect to the connector 401, which is the center of the front surface of the cover base 42. That is, the obstacle detecting members 44 may be provided in two on the left and right sides with respect to the center of the cover base 42, and the obstacle detecting members 44 may have a detection range of an angle of approximately 25 ° by the laser sensor 441. Further, a plurality of the obstacle detecting members 44 may be configured to point in a direction different from each other with respect to the adjacent obstacle detecting members 44.

The obstacle detection member 44 may be composed of

front sensors

44b and 44c and

side sensors

44a and 44 d. The

front sensors

44b and 44c are used to detect an obstacle located in front of the cleaner body 10, and the

front sensors

44b and 44c can detect the obstacle when the cleaner body 10 travels and an obstacle is present in front of the cleaner body. The

side sensors

44a and 44d are configured to detect an obstacle located on a side of the cleaner body 10, and the

side sensors

44a and 44d may detect the obstacle when the obstacle is present on a side close to the cleaner body 10 during traveling of the cleaner body 10. In particular, the

side sensors

44a and 44d can be combined with the

front sensors

44b and 44c to allow the cleaner body 10 to travel without being locked to corners of a wall surface.

To describe this in more detail, the

front sensors

44b and 44c are positioned on the left and right sides with the connector 401 as a center, and can irradiate light in a diagonal direction between the front and the side. That is, as shown in fig. 22, the centers of the

front sensors

44b and 44c on both sides may be positioned at positions rotated by 45 ° in the clockwise direction and the counterclockwise direction, respectively, with respect to the center of the connector 401. Therefore, the centers of the

front sensors

44b, 44c on both sides may form an angle of 90 ° with each other.

Further, since the detection ranges of the obstacle detecting members 44 are each at an angle of approximately 25 °, an undetected area S will be generated between the

front sensors

44b, 44 c. The undetected region S may have an angle of 65 °. The non-detection area S is an area where the suction hose 24 is located while the cleaner body 10 is traveling, and is used to prevent the

front sensors

44b and 44c from recognizing the suction hose 24 as an obstacle. That is, even if the user moves the suction hose 24 during the cleaning operation, the

front sensors

44b and 44c can prevent the suction hose 24 from being erroneously recognized as an obstacle, and the cleaner body 10 from being abnormally driven.

The

side sensors

44a and 44d are located behind the

front sensors

44b and 44c, and are arranged to irradiate light toward the sides of the cleaner body 10. That is, the

side sensors

44a and 44d may be disposed on both sides so as to form an angle of substantially 90 ° with respect to the center of the connector 401. Accordingly, the

side sensors

44a and 44d can detect an obstacle present on the side of the cleaner body 10.

The

side sensors

44a and 44d may be configured to have a detection distance shorter than that of the

front sensors

44b and 44 c. For example, the

front sensors

44b and 44c may be configured to have a detection distance L1 of approximately 600mm forward, and the

side sensors

44a and 44d may be configured to have a detection distance L2 of approximately 350mm to the side.

Since there is a high possibility that an obstacle located in front of the cleaner body 10 interferes with the cleaner body 10 during traveling of the cleaner body 10, a long-distance obstacle is detected, and if an obstacle located on a side is detected, there is a low possibility that the obstacle interferes with the cleaner body 10 during traveling of the cleaner body 10, and if a long-distance side obstacle is also recognized as an obstacle, normal traveling of the cleaner body 10 may not be possible.

In particular, if the detection distance L2 of the

side sensors

44a and 44d is set to be shorter than the detection distance L1 of the front sensor, the cleaner body 10 can more smoothly escape from a wall surface or a corner.

In addition, the obstacle detecting member 44 may include: a laser sensor 441; and a sensor substrate 442, wherein the laser sensor 441 is mounted on the sensor substrate 442. The sensor substrate 442 may further include elements for driving and controlling the laser sensor 441. Of course, the obstacle detection member 44 may be formed of various members such as an ultrasonic sensor, a proximity sensor, and a night vision camera that can detect an obstacle in front, instead of the laser sensor 441.

Further, a locking assembly 80 for achieving selective restraint of the cover member 40 may be further provided between the cover base 42 and the outer cover 43. The locking assembly 80 may include: a pressing member 81; a main link 83(main link) and a sub link 84(sub link) that operate in conjunction with the pressing member 81.

The outer cover 43 forms an outer shape of the cover member 40, and the outer cover 43 forms an upper outer appearance of the cleaner body 10 in a state where the cover member 40 is closed. A connector 401 connected to the close contact portion 241 of the suction hose 24 is formed at the distal end of the outer cover 43. The connector 401 is connected with the connection hole 422 so that the dust and air sucked through the suction device 20 flow in toward the dust bucket 50.

Further, a detection hole 431 may be formed in the front surface of the outer cover 43 with reference to the connector 401. The detection hole 431 may be opened at a position corresponding to the laser sensor 441, and may be configured to emit and receive light for detecting an obstacle.

The detection hole 431 is opened at a position corresponding to the

front sensors

44b and 44c and the

side sensors

44a and 44d, and both inner side surfaces thereof may be formed to be inclined. Thus, the irradiated light can be irradiated according to the size of the set angle range.

In addition, according to actual needs, a hole cover 432 may be further provided in the inspection hole 431, and the hole cover 432 is formed of a material that can transmit the light of the laser sensor 441 and shields the inspection hole 431. The plurality of sensing holes 431 may be formed at the same height and at symmetrical positions with respect to the connector 401. As described above, the detection hole 431 and the obstacle detecting member 44 may be disposed on the front surface of the cover member 40 exposed forward without being shielded by the main body 30, so that an obstacle can be detected while the cleaner body 10 is traveling.

The grip portion 41 may be formed on an upper surface of the outer cover 43. The grip 41 may extend from the connector 401 side to the rear end of the outer cover 43. Further, a pressing member 81 may be provided at the grip portion 41, and the user may operate the selective restraint of the cover member 40 by pressing the pressing member 81. By the operation of the pressing member 81, the cover restricting protrusion 843 selectively protrudes toward both sides of the cover member 40, so that the cover member 40 can be selectively restricted to the body portion 30.

As shown, the locking assembly 80 may include: the pressing member 81 is used for a user to perform pressing operation; a transmission member 82 for transmitting the operation of the pressing member 81; a main link 83 rotated by the transmission member 82; and a sub link 84 that moves in a horizontal manner by rotation of the main link 83.

The pressing member 81 may be accommodated inside the grip portion 41 and may be disposed in a vertically movable manner. The grip 41 may be formed by joining a grip cover 411 and a grip body 412, and the pressing member 81 may be attached to the grip body 412. A cover opening 411a may be formed in the grip cover 411, and the pressing member 81 may be exposed through the cover opening 411 a.

A transmission member mounting portion 811 extending downward is formed on the lower surface of the pressing member 81. The transmission member 82 is mounted to the transmission member mounting portion 811. The transmission member 82 and the pressing member 81 may be coupled to each other by a shaft, and the transmission member 82 may rotate at a predetermined angle and move up and down together when the pressing member 81 moves up and down.

In addition, a driving member inclined part 821 may be formed on a lower surface of the driving member 82. The transmission member inclined portion 821 is used to move the main link 83, which will be described below, by contacting the main link 83, and is formed such that the width thereof increases from the lower end to the upper end, thereby forming an inclined surface.

The main link 83 and the sub link 84 may be coupled to each other to be linked, and a pair may be provided on each of the left and right sides with respect to the center of the cover base 42. That is, the main link 83 and the sub-link 84 may be constituted by a first main link 83a and a first sub-link 84a provided on the left side and a second main link 83b and a second sub-link 84b provided on the right side with reference to fig. 23.

The main link 83 may be rotatably coupled to the cover base 42 using the fastening boss 85. The main link 83 may include: a through portion 831 through which the fastening boss 85 passes; a first extending portion 832 extending from the through portion 831 toward the center where the transmission member 82 is located; the second extended portion 833 extends from the through portion 831 in a direction perpendicular to the first extended portion 832.

In addition, the connecting portion 834 formed on the first extension portion 832 of each of the first and second

main links

83a and 83b may be configured to overlap each other, and an extension portion hole 834b and an extension portion protrusion 834a rotatably coupled to each other are formed on the first extension portion 832, so that the first and second

main links

83a and 83b may be interlocked with each other.

An extension inclined surface 834c corresponding to the transmission member inclined portion 821 is formed at one end of the first extension 832, i.e., at one end contacting the transmission member 82. The extension inclined surface 834c maintains a contact state with the transmission member inclined portion 821, and the transmission member inclined portion 821 moves up and down along the extension inclined surface 834c as the transmission member 82 moves up and down, whereby the first extension 832 may move in the front and rear directions. As the first extension 832 moves in the forward-backward direction, the first and second

main links

83a and 83b may rotate.

The secondary coupling 84 may be rotatably coupled to an end of the second extension 833. That is, the first and second sub-couplers 84a and 84b are coupled to the ends of the pair of second extensions 833, respectively. Further, coupling holes 833a may be formed at the ends of the second extension 833, and coupling projections 841a for engaging with the coupling holes 833a may be formed at the first and second sub-couplings 84a and 84b, respectively. Thus, when the main link 83 rotates, the sub link 84 can be linked therewith.

A coupling guide 423 may be formed at the cover base 42. The coupling guide 423 is formed at a position corresponding to the positions of the first and second sub-couplings 84a and 84b, and a space capable of accommodating the first and second sub-couplings 84a and 84b is formed inside the coupling guide 423. The link guide 423 may be formed in the shape of a pair of ribs, and may guide the movement of the sub-link 84 in a state where the sub-link 84 is located therebetween.

The first and second

sub-coupling pieces

84a and 84b may respectively include: a third extension 841 received in the coupling guide 423; the fourth extension 842 is bent perpendicularly from the third extension 841. Further, a cover restraining projection 843 projecting sideward may be formed on the third extension 841.

An inclined surface 843a is formed at a side surface of the cover restricting protrusion 843, and the inclined surface 843a may be formed to have an inclination such that a width thereof becomes wider as it goes from a lower end to an upper end. Thus, during the closing of the cover member 40, the inclined surface 843a of the cover restraining protrusion 843 comes into contact with the side wall of the upper garnish 37 and is inwardly introduced, and when reaching the protrusion restraining opening (376 in fig. 30) of the upper garnish 37, it may protrude outward and be restrained. For this, the upper end of the cover restricting protrusion 843 may be formed in a planar shape.

Further, a protrusion entrance 424 through which the cover restricting protrusion 843 can enter and exit may be formed at a side surface of the cover base 42 corresponding to the position of the coupling guide 423. When the second sub-coupling member 84b moves in the horizontal direction, the cover restricting projection 843 can enter and exit through the projection entrance/exit 424, and the cover restricting projection 843 engages and restricts the projection restricting opening (376 in fig. 30) of the body portion 30 in a state of projecting from the projection entrance/exit 424, so that the closed state of the cover member 40 can be maintained.

In addition, although not shown, an elastic member such as a spring may be further provided at least one of the pressing member 81, the main link 83, or the sub link 84, and the cover restraining protrusion 843 may be maintained in a protruding state by the elastic member in a state where an external force is not applied by the user's operation.

Fig. 24 is a perspective view showing a state before the operation of the locking assembly. Further, fig. 25 is a sectional view showing a state before the operation of the locking assembly.

As shown in the drawing, in a state where the pressing member 81 is not operated by the user, the transmission member 82 is maintained in a state of being in contact with the main link 83. At this time, the transmission member 82 is positioned at the uppermost position, and the transmission member inclined portion 821 and the extension inclined surface 834c are in contact with each other.

Also, a guide inclined surface 822 may be further formed at a lower end of the driving member 82, and the guide inclined surface 822 may contact a driving member guide 412a formed on the cover base 42. That is, when the transmission member 82 moves downward, the transmission member 82 moves the guide inclined surface 822 along the transmission member guide 412 a. At this time, since the transmission member guide 412a extends so as to intersect perpendicularly with the main link 83, when the transmission member 82 moves downward, it moves in a direction intersecting with the main link 83, and the main link 83 is operated.

At this time, the first main link 83a and the second main link 83b are kept in a state of being arranged on the same extension line, and the main link 83 is kept in a state of not applying an external force. Accordingly, the sub-link 84 is also kept in a state where no external force is applied, and the cover restricting protrusion 843 is kept in a state of being engaged and restricted with the protrusion restricting opening (376 in fig. 30) of the main body 30 in a state of being protruded from the protrusion entrance/exit 424, so that the closed state of the cover member 40 can be maintained.

In this state, the user needs to press and operate the pressing member 81 in order to open the cover member 40. The main link 83 and the sub link 84 are operated in a linked manner by the operation of the pressing member 81, and the cover member 40 is placed in an openable state.

Fig. 26 is a perspective view showing an operation state of the locking assembly. Further, fig. 27 is a sectional view showing an operation state of the locking assembly.

As shown, when the user presses the pressing member 81, the transmission member 82 moves downward. At this time, the transmission member 82 may rotate by the rotation shaft 811a of the transmission member mounting part 811, and the main link 83 may be pressed in a vertical direction. At this time, in order to prevent the driving member 82 from being excessively rotated or disengaged, a pair of disengagement preventing protrusions 824 may be protruded at an upper end of the driving member 82 to be spaced apart from each other, and a disengagement preventing rib 812 of the pressing member 81 may be disposed between the disengagement preventing protrusions 824.

When the transmission member 82 moves downward while the transmission member inclined portion 821 is in contact with the extension inclined surface 834c, the extension inclined surface 834c moves relatively along the transmission member inclined portion 821. That is, the first extension 832 will be pushed upward toward the front. At this time, since the first and second

main links

83a and 83b are in a state of being connected to each other, the first extension 832 is moved forward together.

When the first extension portion 832 moves forward, the main link 83 rotates about the through portion 831, and the second extension portions 833 move in a direction to approach each other. Thereby, the first and second sub-couplers 84a and 84b connected to the second extension 833 are horizontally moved toward the inside each other. With the horizontal movement of the sub-link 84, the cover restricting protrusion 843 formed on the sub-link 84 also moves horizontally and moves to the inside of the protrusion access opening 424.

In this state, since the cover restricting projection 843 is positioned inside the cover member 40, the restriction with the projection restricting opening (376 in fig. 30) of the body portion 30 can be released. Accordingly, the user rotates the cover member 40 in a state of holding the holding portion 41 of the cover member 40, thereby opening the inside of the main body 30 or separating the dust bucket 50 from the main body 30.

As shown in fig. 26, the cover member 40 may be provided with a display 45 for displaying an operation state of the vacuum cleaner 1. The display 45 is configured to display information on the upper surface of the cover member 40, and is disposed on a side of the grip portion 41 so that a user can easily check the state of the vacuum cleaner 1 from above during use of the vacuum cleaner 1.

The display 45 may be configured in various forms such as a liquid crystal display, a combination of a plurality of LEDs, or a seven-bar screen, and is configured to enable information to be visualized. The display 45 may be defined as a single structure for outputting a screen, and may also be defined as including a display PCB 451 provided with the display 45.

The display 45 may be mounted on the cover base 42 and may be configured to be shielded by the outer cover 43. In this case, the entire or a part of the outer cover 43 may transmit light, so that information may be displayed to the outside through the outer cover 43 when the display 45 shielded by the outer cover 43 operates.

For this reason, the entire outer cover 43 may be formed of a light-permeable material, or only a region corresponding to the display 45 may be configured to be light-permeable. Of course, the outer cover 43 may be provided with an opening, and the display 45 may be directly exposed to the outside by attaching the display to the opening, or may be shielded by an additional transparent cover.

The display 45 is fixedly installed on the upper surface of the cover base 42, and the display 45 may be connected to the main PCB 301 using a display cable 452. Thus, the driving of the display 45 may be realized using information and power transmitted from the main PCB 301.

The display 45 may display an operating state of the vacuum cleaner 1, and may be configured to display, for example, a remaining battery level of the battery unit 38 or a time during which the vacuum cleaner can be operated with a current remaining battery level. Further, information such as an abnormal operation state of the vacuum cleaner 1 or replacement of the dust bucket 50 may be displayed.

Fig. 28 is a top view of the cover member in a state where the display of the embodiment of the present invention is closed. Further, fig. 29 is a plan view of the cover member in a state where the display of the embodiment of the present invention is opened.

Referring to the drawings, the display 45 is in a closed state in a state where the cleaner 1 is not operated. In this state, as shown in fig. 28, the display 45 is in a state of being shielded by the outer cover 43, so that the display 45 cannot be seen from the outside, and only the appearance of the outer cover 43 itself can be exposed.

When the vacuum cleaner 1 starts operating by a user's operation, the display 45 is turned on, and as shown in fig. 29, a screen output from the display 45 is visible from the outside through the cover 43. That is, as a screen is output in the display 45 to brighten the display 45, the light of the display 45 passes through the cover 43, and the screen of the display 45 can be seen from the outside in the process.

The display 45 may display the state of the battery unit 38 of the vacuum cleaner in the form of an image, and the user may confirm the state of the battery unit 38 through a screen output from the display 45 to determine whether to perform the charging or cleaning operation of the battery unit 38.

Of course, the display 45 may display various information through the display 45 in addition to the state of charge of the battery unit 38.

Fig. 30 is a perspective view in which the cover member is opened. Further, fig. 31 is an exploded perspective view showing a coupling structure of a coupling assembly of the embodiment of the present invention.

As shown in the drawings, the cover member coupling portion 421 may be formed at the rear end of the cover member 40, and the cover member coupling portion 421 may be coupled to a cover member coupling hole 372 formed on the upper decoration 37 of the body portion 30. When the cover member coupling portion 421 is coupled to the cover member coupling hole 372, the cover member 40 may be rotatably mounted, and the cover member 40 may rotate about the cover member coupling portion 421 to open and close the inside of the main body 30.

The cover member 40 may be opened and closed during the separating operation of the dust bucket 50, and during such an operation, if the cover member 40 is kept in an open state, the separating operation of the dust bucket 50 can be more easily performed.

In particular, since the cover member 40 has a structure having the close-fitting portion 241 for attaching the suction hose 24 at the front end thereof, the cover member 40 is structurally affected by the weight of the suction hose 24, and the cover member 40 is naturally closed.

In such a state, in order to maintain the open state of the cover member 40, a link assembly 90 for connecting the rear end of the cover member 40 and the inside of the upper garnish 37 may be provided.

The coupling assembly 90 may include: a rotary coupling 91 mounted to the cover member coupling portion 421; a slider 92 coupled to the rotary link 91, the slider 92 performing a sliding movement when the rotary link 91 rotates; and a spring 93 for elastically supporting the slider 92.

The rotary coupling 91 may include: a rotating part 911 rotatably attached to the cover member coupling part 421; and support parts 912 extending from both side ends of the rotating part 911 in a spaced state.

The rotation portion 911 may be inserted between a pair of the cover member coupling portions 421, and a rotation shaft 911a protruding laterally from both side ends of the rotation portion 911 may be inserted into a rotation shaft hole 421a formed in the cover member coupling portion 421. Thus, the rotary coupling 91 can rotate with respect to the rotation shaft 911a, and the rotary coupling 91 can rotate when the cover member 40 is opened and closed.

The support portions 912 may extend in a spaced state, and a space portion 913 capable of receiving an end portion of the slider 92 may be formed between the pair of support portions 912. A slider fixing portion 912a and a support protrusion 912b may be formed at end portions of the pair of support portions 912, respectively.

The slider fixing portions 912a may protrude from end portions of the support portions 912 in directions facing each other and be located inside the space portion 913. The slider fixing portion 912a may be inserted into the slider fixing groove 921 of the slider 92. Further, the slider fixing portion 912a may become a rotation shaft of the slider 92 or the rotary coupling 91.

The support protrusions 912b are formed to protrude laterally from the outer surface of the end of the support portion 912. The support protrusion 912b protrudes outward, and when the cover member 40 is opened and closed, the support protrusion 912b selectively engages with an interference protrusion 375a that is constrained inside a coupling unit housing portion 373 that will be described below.

In addition, support slits 912c may be formed at end portions of the support portion 912, respectively. The support slit 912c can easily elastically deform the end of the support portion 912 when interfering with the support protrusion 912b and the interference protrusion 375 a.

The rear end of the slider 92 is disposed inside the space portion 913, and the front end of the slider 92 is received in the coupling unit receiving portion 373 formed in the body portion 30.

Slide fixing grooves 921 may be formed on both left and right sides of the slide 92 to be recessed inward. The slider fixing groove 921 is formed to be opened rearward and can accommodate the slider fixing portion 912a formed in a shaft shape. Further, the slider 92 and the rotary coupling 91 may be interlocked and operated with each other.

Further, a slider guide 922 may be formed in front of the slider fixing groove 921. The slider guide 922 may extend from an end of the slider fixing groove 921 to an end of the slider 92. A pair of ribs are provided on both left and right sides of the slider guide 922, respectively, and guide ribs 374a, which will be described below, are received in the pair of ribs, thereby enabling the slider 92 to move smoothly.

Further, a spring hole 923 is formed in the rear surface of the slider 92 so as to be inwardly recessed. The spring 93 may be inserted into the spring hole 923, and the spring 93 is compressed or elastically deformed according to the movement of the slider 92, thereby providing an elastic force to the slider 92.

In addition, the coupling assembly receiving portion 373 may be formed at the upper trim 37. The coupling member assembly receiving portion 373 may be provided on the upper surface of the body portion 30. Further, the coupling member assembly receiving portion 373 may be formed in a size capable of moving in and out the slider 92 and the rotary coupling member 91.

In detail, a slider receiving portion 374 for receiving the slider 92 may be formed at the center of the inner side of the coupling member receiving portion 373. Further, guide ribs 374a are formed to protrude from both side wall surfaces of the slider receiving portion 374. The guide rib 374a is projected so as to be insertable into the slider guide 922, and may be formed to extend along the insertion direction of the slider 92. Accordingly, when the slider 92 slides in the front-rear direction, the guide rib 374a and the slider guide 922 slide along a predetermined path, and are prevented from being disengaged.

A coupling receiving portion 375 into which the rotary coupling 91 can be selectively inserted may be further formed at the coupling assembly receiving portion 373. The coupling receiving portion 375 is located rearward of the slider receiving portion 374, provides a space capable of receiving the rotary coupling 91, and may be opened rearward.

Further, an interference protrusion 375a protruding inward may be protrudingly formed at an inner sidewall surface of the coupling accommodating portion 375. In a state where the rotary coupling 91 is drawn out due to the opening of the cover member 40, the interference protrusion 375a supports the support protrusion 912b formed on the support portion 912, thereby enabling the rotary coupling 91 to maintain the drawn out state.

At this time, the interference protrusion 375a may be protruded in a manner inclined at a predetermined angle, whereby, when supporting the support protrusion 912b, it may be supported in a state where the rotation coupling 91 is inclined. That is, when the interference protrusion 375a supports the support protrusion 912b, the cover member 40 will maintain an inclined state, thereby enabling the cover member 40 to maintain an open state.

Further, in accordance with the rotation operation of the cover member 40 by the user, the open/close state of the cover member 40 may be determined according to whether the support protrusion 912b is supported by the interference protrusion 375a or whether the support protrusion 912b straddles the interference protrusion 375 a.

The state of the coupling assembly 90 in the state where the lid member 40 is closed, in which the lid member 40 shields the upper surface of the body portion 30 in the opening, will be described with reference to the drawings. The lower end of the cover member 40 will be in contact with the lower end of the upper garnish 37, and the coupler assembly 90 of the cover member 40 can be in a state of being restrained by the upper garnish 37.

Further, the slider 92 and the rotary link 91 are in a state of being inserted inside the link assembly receiving portion 373 of the upper garnish 37, and the rotary link 91 is kept in a state of being horizontal or in the same extended line state as the slider 92.

At this time, since the slider 92 is in a state of being completely inserted into the inside of the slider receiving portion 374, the spring 93 reaches a state of being compressed at the maximum. Therefore, when the user releases the restraint of the locking assembly 80 in order to open the cover member 40, the slider 92 is pushed by the elastic force of the spring 93, and naturally, a force can be applied in a direction to rotate the cover member 40.

In this state, in order to open the lid member 40, the user presses the pressing member 81 to operate the lock unit 80, and releases the restriction between the lid member 40 and the body portion 30, thereby allowing the lid member 40 to be opened. Further, the user can grip the grip portion 41 and rotate the cover member 40, thereby opening the cover member 40.

Fig. 33 is a sectional view showing a state of the coupling assembly in a state where the cover member is opened. Fig. 34 is an enlarged view of a portion a of fig. 30.

Describing the state of the coupling assembly 90 in the state where the cover member 40 is opened with reference to the drawings, when the user opens the cover member 40, the cover member 40 can be rotated and opened clockwise with the cover member coupling portion 421 as an axis.

At this time, the rotary coupling 91 rotatably connected to the cover member coupling portion 421 is also rotated, and the slider 92 connected to the rotary coupling 91 is slidably moved rearward (rightward in fig. 30) by the guide of the slider guide 922 and the guide rib 374 a. The spring 93 for elastically supporting the slider 92 may provide an elastic force upon movement of the slider 92, thereby making the slider 92 more easily moved.

Further, the rotary link 91 can be horizontally moved together with the slider 92 to pull the slider 92 and enable drawing out of the slider 92 while the rotary link 91 is rotated in the counterclockwise direction. At this time, the support protrusion 912b of the rotary coupling 91 will come into contact with the interference protrusion 375a on the coupling unit receiving portion 373.

When the user completely opens the cover member 40, the rotary coupling 91 can reach the state shown in fig. 30 and 31. At this time, the support protrusion 912b passes the interference protrusion 375a by the rotational operation of the cover member 40 by the user, and at this time, the support portion 912 is elastically deformed so that the support protrusion 912b can ride over the interference protrusion 375 a.

In such a state, the opening of the cover member 40 can be stopped, and even if the grip portion 41 is released, the rotation coupling 91 can maintain a set angle due to the contact of the support protrusion 912b with the interference protrusion 375 a. Accordingly, the cover member 40 can be maintained in an open state at a predetermined angle, and a user can mount the dust bucket 50 separately or perform a desired operation inside the main body 30 in the open state of the cover member 40.

In the state shown in fig. 33 and 34, when the lid member needs to be closed again, the grip portion may be gripped and the lid member may be pressed, so that the lid member may be turned counterclockwise and closed.

At this time, at the moment when the cover member 40 starts to rotate in the counterclockwise direction, the support protrusion 912b will ride over the interference protrusion 375a by the force applied by the user, and the support portion 912 may be elastically deformed to easily move the support protrusion 912 b.

When the cover member 40 is completely rotated and closed, the state shown in fig. 29 is reached, and when the cover member 40 is closed, the cover restricting protrusion 843 of the locking assembly 80 is inserted into the inside of the protrusion restricting opening 376 to be restricted, thereby enabling the cover member 40 to maintain the closed state.

The display cable 452 may be guided to the inside of the main body 30 by a cover member coupling portion 46 extending rearward from the rear end of the cover member 40. The display cable 452 is guided along the inside of the cover member coupling portion 46 so as not to be exposed to the outside. Further, the display cable 452 is guided to the inside of the main body 30 by the rear end of the cover member coupling portion 46 which is the rotation center of the cover member 40, and therefore, not only is the display cable 452 prevented from being exposed, but also the display cable 452 can be prevented from being damaged in the case of the continuous opening and closing operation of the cover member 40.

Referring to the drawings, the structure of the cover member coupling portion 46 will be described in more detail, and the cover member coupling portion 46 extends rearward in a pair on both left and right sides, is inserted into the cleaner body 10, and is rotatably coupled thereto.

The cover member coupling portion 46 may include: a bent portion 461 extending downward from the rear end of the cover base 42 by a predetermined length; an extension 462 extends rearward from an end of the bent portion 461.

A bent portion hole 463 may be formed at inner sides of the bent portion 461 at both left and right sides, and a rotation shaft 911a of the rotation portion 911 of the rotation coupling member 91 is inserted into the bent portion hole 463. Thus, one end of the rotational coupling 91 may be disposed in a space between the pair of bent portions 461 and may be rotatably coupled to the inner side surfaces of the bent portions 461.

In addition, cover rotating shafts 464 may be formed at both side ends of the extension 462. The cover rotating shaft 464 may protrude in an outer direction from an outer side surface of the extension 462, and be shaft-coupled to the cover member coupling hole 372 of the upper garnish 37. Thus, the cover member 40 can be rotated about the cover rotation shaft 464, which is an end of the cover member coupling portion 46, and the cover member 40 can be opened and closed by the rotation.

In addition, the cover member coupling part 46 is formed with a recessed guide space 465 inside, and the guide space 465 may be formed from a front end to a rear end of the cover member coupling part 46. Further, a cable hole 466 may be formed at a rear end of the guide space 465, i.e., a rear end of the cover member coupling portion 46.

Therefore, in a state where the cover member 40 is rotatably coupled to the upper garnish 37, the cover member coupling portion 46 will reach a state of being inserted into the inside of the garnish opening 377 of the upper garnish 37. Further, in such a state, the cover member coupling portion 46 may communicate the inside of the cover member 40 and the inside of the body portion 30 with each other.

The display cable 452 may be disposed in the guide space 465 of the cover member coupling portion 46. The display cable 452 may be guided along the cover member coupling portion 46 and enter the inside of the body portion 30 through the cable hole 466. In addition, the display cable 452 entering the inside of the body part 30 may be connected with the main PCB 301. Of course, the display cable 452 may also be connected to other PCBs or components for supplying power that are not inside the body portion 30 of the main PCB 301.

In addition, a plurality of reinforcing parts 467 may be further formed inside the guide space 465. The reinforcing portion 467 may be formed in a rib shape, and a plurality thereof may be formed along the extending direction of the cover member coupling portion 46 and the direction intersecting the extending direction.

Further, stoppers 47 may be formed in spaces between the cover member coupling portions 46 provided at both left and right sides. The stopper 47 contacts the outer side surface of the upper garnish 37 in a state where the cover member 40 is completely opened at the time of a rotating operation for opening the cover member 40 to restrict the cover member 40 from being excessively rotated, so that the rotary coupling 91 can be prevented from being damaged or separated.

As shown, a locking assembly 80 may be disposed at the cover base 42 of the cover member 40. The locking assembly 80 may include: the pressing member 81 and the transmission member 82, the main link 83, and the sub link 84. At this time, the pressing member 81 is fixedly mounted to the grip portion 41, and the remaining members of the locking assembly 80 except for the grip portion 41 may be configured to interact on the cover base 42.

Further, a plurality of obstacle detecting members 44 may be disposed on the front surface of the cover member 40. The obstacle detecting member 44 is configured to be able to detect an obstacle during movement of the cleaner body 10 (during travel of the cleaner body 10), and the obstacle detecting member 44 may be disposed along a front surface of the cover base 42.

The obstacle detecting member 44 may be provided in plural numbers, and the plural numbers may be provided at the center of the front surface of the cover base 42, that is, at both right and left sides with reference to the connector 401. That is, the obstacle detection members 44 may be provided in two on the left and right sides with respect to the center of the cover base 42. The front surface of the cover member 40 is formed with a curved surface, and the plurality of obstacle detection members 44 may be configured to irradiate light or ultrasonic waves for detection in a direction perpendicular to a tangent line to the front surface of the cover member 40. The obstacle detecting member 44 may include a laser sensor, a light sensor or an ultrasonic sensor, a night vision camera capable of detecting an obstacle in the traveling direction or in the vicinity of the cleaner 1.

The obstacle detection member 44 may include a plurality of sensor substrates 442 for sensor or detection device operation, and a detection member cable 443 may be connected to each of the plurality of sensor substrates 442. The detection member cable 443 enables power supply for the operation of the obstacle detection member 44 and transmission of a detection signal.

The detection member cable 443 may be formed in plural to connect the sensor substrates 442 to each other, and may be guided along the inner peripheral edge of the cover base 42 to the rear side where the cover member coupling portion 46 is disposed. At this time, the plurality of detecting member cables 443 may be brought into an integrally bundled state by the cable guide members 443a such as a shrink tube, an adhesive tape, or a cable tie (cable tie), and may be passed through the cover member combining portion 46 in such a state. That is, the cable guide member 443a may be disposed in a section passing through at least the cover member coupling portion 46.

At this time, the detection member cable 443 may be guided to the inside of the main body 30 by the cover member coupling portion 46 (left side in fig. 36) on one side of the pair of cover member coupling portions 46 disposed at the rear end of the cover base 42. Thereby, even in the case of the continuous opening operation of the cover member 40, the detection member cable 443 can be prevented from being damaged, and can be easily arranged inside the main body 30 by the cover member coupling portion 46.

In addition, the display 45 and the display PCB 451 may be disposed on the upper surface of the cover base 42. Of course, the display 45 and the display PCB 451 may be fixedly mounted on the rear surface of the outer cover 43 of the cover member 40.

The display PCB 451 may be fixedly mounted to an upper surface of the cover base 42, and the display 45 is mounted on the display PCB 451. The display 45 may include a light guide 45a contacting the rear surface of the outer cover 43, and a plurality of LED holes 45b may be installed in the light guide 45 a. Further, the plurality of LED holes 45b may accommodate LEDs (not shown) respectively, and may be independently lighted. Accordingly, the remaining amount of the battery unit 38 can be displayed by the light guided through the LED hole 45b and transmitted to the cover 43.

In addition, the display cable 452 may be mounted on the display PCB 451. The display cable 452 may be composed of a plurality of electric wires, which may be brought into a state of being bundled integrally by the same cable guide member 452a as the cable guide member 443 a. The cable guide 452a may be disposed in a section passing through at least the cover member coupling portion 46. Further, the display cable may be guided to the inside of the body part 30 through the cover member coupling part 46. At this time, the display cable 452 may be guided by the other cover member coupling portion 46 (right side in fig. 36) of the pair of cover member coupling portions 46, which is not the cover member coupling portion 46 that guides the detection member cable 443. That is, in the pair of cover member coupling portions 46 provided at the rear end of the cover base 42, the detection member cables 443 and the display cable 452 may be individually guided so as to be separated from each other.

As shown in the drawing, the detection member cable 443 and the display cable 452 can be guided to the inside of the main body 30 by the pair of cover member coupling portions 46, and even when the cover member 40 is rotated to open and close, the cables can be guided and prevented from being exposed to the outside.

The sensing member cable 442 entering the inside of the main body 30 may be guided to the side of the main body 30 to which the moving wheel 60 is attached. Further, the sensing member cable 442 may be connected to the sensing part 306 mounted on the body part 30. Accordingly, the obstacle detection signal detected by the obstacle detection means 44 can be transmitted to the detection unit 306 and processed, and the travel of the cleaner body 10 can be adjusted by controlling the driving of the moving wheel 60.

In this case, the connector 443b that can be coupled to each other is provided at the end of the sensing member cable 442 and the sensing portion 306, so that the sensing member cable 442 and the sensing portion 306 can be connected by a simple operation of connecting the connectors 443 b.

Further, the display cable 452 entered to the inside of the body part 30 may be connected with the battery unit 38 mounted on the lower frame 33 in a state of being guided to the inside of the body part 30, or with another PCB or device capable of providing information about the remaining amount of the battery unit 38.

That is, in a state where the display cable 452 is connected, the transmitted information on the remaining amount of the battery unit 38 and the power source are transmitted to the display 45, so that the operation information of the battery unit 38 can be transmitted to the user.

Of course, the connector 452b may be formed at an end of the display cable 452, and may be configured to be simply coupled to an opposite object.

Fig. 38 is a perspective view of the dust bucket. Fig. 39 is an exploded perspective view of the dust bucket.

As shown in the drawing, the dust bucket 50 is used to separate and store dust from air flowing in through the suction device 20, and the sucked air is sequentially filtered by the first cyclone 54 and the second cyclone 55 for separating the dust and the air in a cyclone manner, and then discharged through the discharge port 512, so that the air can flow into the main body 30.

The dust bucket 50 may include: a transparent case 53 having a cylindrical shape as a whole; an upper cover 51 for opening and closing an open upper end of the transparent case 53; and a lower cover 52 for opening and closing the open lower end of the transparent case 53. Further, the first and

second cyclones

54 and 55, the inner casing 544, the dust compressing unit 56, the guide unit 543, and the like may be accommodated inside the transparent casing 53.

To describe it in more detail, the upper cover 51 forms an outer appearance of an upper surface of the dust tub 50, and the upper cover 51 may be shielded by the cover member 40 in a state of being mounted to the body part 30. Further, a suction port 511 is formed in front of the dust tub 50, and in a state where the cover member 40 is closed, the suction port 511 communicates with the connector 401, so that air containing dust sucked through the suction device 20 flows into the inside of the dust tub 50.

Further, although not shown in detail, a flow path guide 518 is provided inside the upper cover 51 so that the air flowing in through the suction port 511 flows downward along the inner surface of the transparent case 53 while being guided along the outer peripheral edge. At this time, the flowing air may be discharged in one direction along the inner surface of the transparent case 53 by the upper cover 51, rotated in a spiral shape, and rotated along the peripheral edge of the transparent case 53.

A discharge port 512 is formed at the rear of the upper cover 51 facing the suction port 511. The discharge port 512 is an outlet through which air in a state in which dust is filtered by passing through the first cyclone 54 and the second cyclone 55 inside the dust bucket 50 is discharged to the outside of the dust bucket 50. The air in the dust tub 50 can be guided to the discharge port 512 by the flow path guide 518 provided in the upper cover 51. The discharge port 512 may be in contact with the filter hole 361a of the pre-filter unit 36, so that air flows into the main body 30 through the filter hole 361 a.

In addition, a dust bucket handle 513 that can be drawn upward may be provided on the upper surface of the upper cover 51. The dust bucket handle 513 may include: a grip part 513a extending in the lateral direction for a user to grip; and guide extensions 513b extending perpendicularly from both ends of the handle 513 a. The guide extension 513b may be inserted into the upper cover 51, and the handle 513a may be closely attached to the upper surface of the upper cover 51. In a state where the dust bucket 50 is mounted, the dust bucket handle 513 maintains an inserted state due to its own weight, and does not interfere with opening and closing of the cover member 40.

An upper cover insertion portion 514 extending downward along the peripheral edge is formed at the lower end of the upper cover 51, and an upper seal 515 is provided at the upper cover insertion portion 514 so that the transparent case 53 can be kept airtight in a state where the upper cover 51 is attached to the transparent case 53. In addition, the upper cover 51 may be maintained in a state of being coupled to the transparent case 53 by an upper locking member 57, which will be described below.

The lower cover 52 may be formed in a shape corresponding to the transparent case 53 so as to be able to shield the lower surface of the transparent case 53, which is open. A lower seal 523 is provided on the periphery of the lower cover 52, and in a state where the lower cover 52 is closed, the lower seal 523 is in close contact with the transparent case 53, thereby sealing the space between the transparent case 53 and the lower cover 52.

Further, a transmission gear 59 may be provided at the center of the lower cover 52. The driving gear 59 connects the compression motor assembly 323 and the dust compression unit 56 to transmit power, so that the dust compression unit 56 is driven by the driving of the compression motor assembly 323.

One side of the lower cover 52 may be shaft-coupled to a lower end of the transparent case 53, and the lower cover 52 may be opened and closed by rotating it in order to empty dust. Further, the lower cover 52 is kept coupled to the transparent case 53 by a lower locking member 58 to be described below. Thus, the lower cover 52 can be selectively opened and closed by the operation of the lower lock 58.

The first cyclone 54 is configured to filter out foreign substances and dust from the inflow air, and to allow the air with the filtered foreign substances and dust to flow into the inside. The first cyclones 54 may include: a strainer 541 formed with a plurality of holes and having a cylindrical shape; and a dust filter 542 disposed outside or inside the strainer 541.

Therefore, the air flowing along the transparent case 53 can be filtered by the filter unit 39, and the filtered dust can flow into the inside of the strainer 541, fall downward, pass through the guide unit 543, and be stored in the first dust collection space 501 below the dust tub 50. In addition, the fine dust not filtered by the filter unit 39 may be separated by the filter unit 39 and flowing into the second cyclone 55.

The second cyclone 55 may include a plurality of housings 551, and the plurality of housings 551 may be accommodated inside the strainer 541 and formed in a conical shape that becomes narrower as it goes downward. The upper end of the housing 551 and the lower end of the housing 551 are open, and the sucked air is rotated in the housing 551, and in the process, fine dust is separated and discharged downward, and the air separated from the fine dust flows upward. The fine dusts separated by the housing 551 can be stored in the second dust collecting space 502 separated from the first dust collecting space 501.

An inlet 551a through which air can flow may be formed at an upper portion of the housing 551. Further, a guide blade 552 is provided at the inlet 551a, and the guide blade 552 is formed in a spiral shape along the inner circumference of the housing 551, thereby generating a rotational flow of the inflowing air.

A vortex guide 553 is provided at an upper portion of the housing 551, and the vortex guide 553 forms an outlet 553a through which air separated from fine dusts inside the housing 551 is discharged. The vortex guide 553 shields an upper surface of the housing 551, which is open, and the outlet 553a may be disposed at the center of the housing 551. Further, a cyclone cover 554 for forming an upper surface of the second cyclone 55 is provided, and the cyclone cover 554 is communicated with the outlets 553a of the plurality of vortex guides 553. The swirl guide 553 and the cyclone cover 554 may be integrally formed, and the guide vane 552 may be integrally formed with the swirl guide 553. In addition, the cyclone cover 554 may be fixed in combination with the upper cover 51 or fixed to the upper end of the transparent case 53.

The air discharged upward through the outlet 553a of the vortex finder 553 may flow through the upper cover 51, flow along the inside of the body 30 through the discharge port 512, and then be discharged to the outside of the body 30 through the rear cover 314.

The inner housing 544 may be formed to support the first cyclone 54 and the second cyclone 55 while dividing the first dust collecting space 501 and the second dust collecting space 502. The inner case 544 may be formed in a cylindrical shape whose upper and lower surfaces are opened, and whose lower portion is formed to have a smaller diameter than the upper portion. Thus, a space between the inner housing 544 and the transparent housing 53 may be defined as the first dust collecting space 501 for storing the dust separated by the first cyclones 54, and a space inside the inner housing 544 may be defined as the second dust collecting space 502 for storing the dust separated by the second cyclones 55.

The upper portion of the inner case 544 is configured to be narrower in diameter toward the lower side, and to be able to accommodate the lower portion of the case 551. Further, a guide unit 543 may be provided at an upper portion of the inner case 544.

The guide unit 543 for spirally rotating and moving downward the dust and air separated by the first cyclone 54 when flowing downward may include: a guide base 543a mounted on the outside of the inner case 544; a vane 543b protruding from the guide base 543 a.

The guide base 543a may be formed in a cylindrical shape and disposed outside the inner case 544. The guide base 543a may be combined with the inner case 544 or integrally formed with the inner case 544. Further, the guide base 543a may be rotatably mounted at an outer side of the inner case 544. The guide base 543a may be integrated with the dust compressing unit 56.

The vane 543b may be formed along the outer circumferential surface of the base 31 and may be inclined, so that the flow direction of the dust and the air may be forced to be a spiral direction. At this time, at least a part of the adjacent blades 543b among the plurality of blades 543b may be arranged to overlap each other when viewed from above, and dust and air may move downward through the flow path formed between the adjacent blades 543 b.

The dust guided by the vane 543b may pass through the vane 543b and be stored inside the first dust collecting space 501. In addition, in the structure of the blades 543b formed in an inclined manner and arranged to overlap each other in the vertical direction, the dust stored in the first dust collecting space 501 cannot flow backward in the opposite direction, but stays in the first dust collecting space 501.

In particular, a backflow prevention portion 531 is formed on an inner surface of the transparent case 53 corresponding to the region of the vane 543 b. The backflow prevention parts 531 may be disposed at regular intervals along the inner circumference of the transparent case 53. The backflow prevention portion 531 may be formed in a rib shape extending in a direction intersecting the vane 543 b.

Accordingly, a part of the dust flowing backward from the first dust collecting space 501 collides with the backflow preventing part 531 passing through the blade 543b while rotating, and drops downward again without passing through the blade 543b, thereby performing a first compression. That is, a part of the dust flowing upward repeatedly falls continuously by the vane 543b and the backflow preventing portion 531, and collides with other dust and is compressed.

The dust compressing unit 56 is provided at a lower portion of the inner housing 544, and rotatably pressurizes dust stored inside the first dust collecting space 501, thereby reducing the volume of the dust.

In detail, the dust compressing unit 56 may include a rotating part 561 and a pressing part 562. The rotating portion 561 is formed in a cylindrical shape and is attached to the outside of the inner case 544. The rotating part 561 may be independently rotated according to a coupling state with the inner case 544, or may be rotated together with the inner case 544. Of course, when the rotating part 561 is coupled to the guide unit 543, it may rotate together with the guide unit 543.

The pressure part 562 may be formed to cross the first dust collecting space 501 from one side of the rotation part 561 to an inner side surface of the transparent housing 53. The pressure part 562 may be formed in a plate shape corresponding to a cross section of the first dust collecting space 501 to divide the inside of the first dust collecting space 501, an inner wall (not shown) extending inward to overlap the pressure part 562 may be formed inside the first dust collecting space 501, and the dust stored in the first dust collecting space may be compressed between the pressure part 562 and the inner wall by forward and reverse rotation of the pressure part 562. That is, the dust stored in the inside of the first dust collecting space 501 is compressed for the second time by the rotation of the pressure part 562.

A plurality of air vents 562a are formed at the pressure part 562 to reduce resistance of air that may be generated when the pressure part 562 rotates and reduce pressure imbalance of the space divided by the pressure part 562. A decorative member 563 may be attached to an extended end of the pressing portion 562 so as to contact an inner surface of the transparent case 53. The decorative member 563 is formed in a quadrangular shape in surface contact with the transparent case 53, and can shield a gap between the pressing portion 562 and the transparent case 53. Further, the decoration member 563 may be formed of an abrasion resistant material and may be formed of a lubricating material so that the pressing part 562 smoothly rotates.

A pair of support ribs 532 may be formed on the outer surface of the transparent case 53. The support ribs 532 may be formed to extend from the upper end to the lower end of the transparent case 53. In addition, when the dust bucket 50 is installed, the support ribs 532 are in contact with both left and right ends of the opened front surface of the body part 30, thereby guiding the proper installation of the dust bucket 50.

Fig. 40 is an exploded perspective view of a coupling structure of an upper cover and a lower cover of the dust bucket as viewed from one side. Fig. 41 is a sectional view of the upper cover opened. Further, fig. 42 is an exploded perspective view of the coupling structure of the upper cover and the lower cover of the dust bucket as viewed from the other side. Fig. 43 is a sectional view of the lower cover opened.

As shown in the drawing, the upper cover 51 and the lower cover 52 may be mounted at the upper and lower ends of the transparent case 53, respectively, to shield the transparent case 53.

The upper cover 51 can be kept in a state of being constrained to the transparent case 53 by an upper locking piece 57. In addition, in case that it is necessary to disassemble the components inside the dust bucket 50 for cleaning or maintenance, the upper cover 51 may be separated from the transparent case 53 by operating the upper locking piece 57.

The upper locking member 57 may be mounted to an upper locking member mounting portion 533 formed at an upper end of the transparent case 53. At this time, the upper lock 57 can be rotated by inserting the lock rotation shaft 571 protruding laterally from both side surfaces of the upper lock 57 into the lock hole 533a attached to the upper lock attachment portion 533.

A locking spring 572 may be provided between the upper locking member 57 and the upper locking member mounting portion 533 below the locking member rotating shaft 571, and a lower portion of the upper locking member 57 may be elastically supported by the spring mounting portion 573 and the spring guide 533 b.

The upper locking member 57 may extend further than the upper end of the transparent case 53, and a hooking portion 574 protruding in a hook shape may be formed at the extended end. In a state where the upper cover 51 is attached, the hook 574 is inserted into the hook restraint 516 of the upper cover 51 and can be engaged and restrained with each other.

An upper protrusion 517 may be formed on a side of the upper cover 51 facing the hook constraining portion 516, and an upper groove 534 into which the upper protrusion 517 is inserted may be formed at an upper end of an inner surface of the transparent case 53 corresponding thereto.

Thus, in a state where the upper cover 51 is mounted, one end of the upper cover 51 is fixed by the coupling of the upper protrusion 517 and the upper groove 534, and the other end of the upper cover 51 is fixed by the upper locking member 57, so that the upper cover 51 can be maintained in the mounted state. In order to separate the upper cover 51, the upper protrusion 517 and the upper groove 534 may be separated after the upper locking member 57 is operated to release the restriction of one end of the upper cover 51.

The lower cover 52 can be maintained in a closed state by the lower locking member 58, and the first and second

dust collecting spaces

501 and 502 can be opened by opening the lower cover 52, so that the first and second

dust collecting spaces

501 and 502 can be emptied of dust.

A lower cover shaft 521 is formed at one end of the lower cover 52. The lower cover shaft 521 is rotatably coupled to a lower cover coupling portion 535 formed at a lower end of the transparent case 53. Thus, when the lower cover 52 is opened and closed, the lower cover 52 rotates about the lower cover shaft 521.

Further, a lower locking member 58 is provided at the other end of the transparent case 53 corresponding to the lower cover coupling portion 535. The lower locking member 58 is slidably installed in the up-down direction so as to be able to selectively restrain the lower cover 52.

Specifically, a lower locking member mounting portion 536 is formed at a lower end of the transparent case 53 facing the upper locking member mounting portion 533. The lower lock mounting part 536 may be formed as a pair of protruding ribs and formed with a lock slot 536a extending in the up-down direction.

A housing engaging portion 537 is formed between the protruding ribs of the lower lock mounting portion 536. The housing locking portion 537 protrudes from the lower end of the transparent housing 53, and the lower hook 522 of the lower cover 52 is locked and restricted to the housing locking portion 537 in a state where the lower cover 52 is closed.

In addition, the lower locking member 58 is formed in a concave shape so as to be able to receive the lower locking member mounting portion 536 at the inner side thereof, and locking member protrusions 581 protruding in the inner side direction are formed at both sides of the inner side surface of the lower locking member 58, and the locking member protrusions 581 are inserted into the locking member slots 536 a. Thus, the lower lock 58 is attached to the lower lock attachment portion 536 so as to be movable up and down.

Further, a pushing portion 582(pushing) extending downward may be formed inside the recess of the lower locking piece 58. The pushing portion 582 is a member that contacts a lower hook 522 formed on the lower cover, and the pushing portion 582 has an inclined surface 582a so that the lower hook 522 is pushed and separated from the housing locking portion 537 when the lower lock 58 moves downward, thereby opening the lower cover 52.

The upper end of the lower hook 522 may be formed with an inclined surface, and the inclined surface 522a of the lower hook 522 may be in a state of being in contact with the inclined surface 582a of the pushing portion 582 in a state where the lower cover 52 is closed. In this state, when the lower lock 58 moves downward, the pushing portion 582 pushes the inclined surface 522a of the lower hook 522 to elastically deform the lower hook 522. Thus, the lower hook 522 is elastically deformed, and the lower hook 522 and the housing locking portion 537 can be released from the restraint.

Fig. 44 is an exploded perspective view illustrating a coupling structure of the lower cover and the dust compressing unit. Further, fig. 45 is an enlarged view of a portion B of fig. 41.

As shown, a bearing 593 may be mounted in the center of the lower cover 52. Further, a first transmission gear 591 may be provided on a lower surface of the lower cover 52. The first transmission gear 591 may be connected with the compression motor assembly 323 and rotate. When the dust tub 50 is seated in the seating portion 32, the first transmission gear 591 may be naturally connected with the compression motor assembly 323 and rotated.

The rotation shaft 591a of the first transmission gear 591 is installed to penetrate the bearing 593 and can be smoothly rotated by the bearing 593. Further, the second transmission gear 592 is disposed on an upper surface of the lower cover 52, penetrates the bearing 593, and is coupled to the rotation shaft 591a of the first transmission gear 591. Thus, the second transmission gear 592 can rotate together with the first transmission gear 591.

The second transmission gear 592 is formed in a disk shape, and a plurality of gear portions 592a are formed along a circumference thereof, and the plurality of gear portions 592a may be coupled with gear coupling protrusions 561a formed on an inner circumferential surface of the rotating portion 561 of the dust compressing unit 56.

That is, when the dust bucket 50 is assembled, if the lower cover 52 is closed in a state where the dust compression unit 56 is mounted, the gear portion 592a of the second transmission gear 592 and the gear coupling protrusion 561a of the dust compression unit 56 are molded, so that the dust compression unit 56 can be driven.

In addition, a coupling boss 592b may be formed at the center of the upper surface of the second transmission gear 592, and a seating groove 592c capable of seating a seal plate 594 is formed at the outer side of the coupling boss 592 b.

Further, a seal mounting projection 592d is formed on a lower surface of the second transmission gear 592. A transmission gear seal 597 is mounted on the seal mounting projection 592 d. The transmission gear mounting portion 592d may contact an inner circumferential surface of the rotating portion 561 to perform airtightness. At this time, the driving gear seal 597 is integrated with the second driving gear 592 so as to be rotated together when the second driving gear 592 is rotated.

The seal plate 594 is formed in a disc shape, and an inner seal 595 for shielding a lower surface of the inner case 544, which is open, is mounted. The inner seal 595 may be integrally coupled to seal mounting

parts

594a and 594b formed at the upper end of the seal plate 594. The inner seal 595 may be formed in a shape corresponding to the opening of the inner housing 544.

The inner seal 595 includes: a first airtight part 595a formed in a disc shape and contacting an open lower end of the inner case 544; and a second airtight part 595b provided above the first airtight part 595a, inserted into the inner side of the inner case 544, and contacting the inner surface of the inner case 544. Thereby, the inner seal 595 can airtightly seal the opening of the inner case 544 in a fixed state.

The

seal mounting parts

594a and 594b include: a first projection 594a projecting upward from an upper surface of the sealing plate 594; and a second projection 594b projecting outward from the first projection 594a in a perpendicular manner. The first and

second protrusions

594a and 594b are inserted into the lower surface of the inner seal 595, so that the inner seal 595 can be firmly fixed to the seal plate 594.

In addition, a seating rib 594c inserted into the seating groove 592c may be formed on a lower surface of the seal plate 594. The seating rib 594c is movable in a state of being inserted into the seating groove 592 c.

Further, a shaft coupling hole 594d for fastening a shaft coupling member 596, which couples the seal plate 594 and the second transmission gear 592, to the shaft coupling hole 594d is formed at the center of the seal plate 594. The shaft coupling member 596 may penetrate the shaft coupling hole 594d and the coupling boss 592b of the second transmission gear 592 to be fastened.

At this time, the coupling boss 592b may be formed higher than the seal plate 594 to prevent the shaft coupling member 596 from pressing the seal plate 594. Thus, the seal plate 594 can be freely rotatably mounted even in a state of being coupled to the second transmission gear 592.

That is, in a state where the dust bucket 50 is installed, when the compression motor assembly 323 is driven, the first and second transmission gears 591 and 592 are rotated, and the rotating part 561 gear-coupled with the second transmission gear 592 is rotated, thereby driving the dust compression unit 56.

At this time, since the seal plate 594 disposed to the second transmission gear 592 is freely rotatably coupled above the second transmission gear 592, a stopped state can be maintained even when the second transmission gear 592 rotates. Accordingly, the inner seal 595 mounted on the seal plate 594 can maintain a state of shielding the lower surface of the inner housing 544, that is, the second dust collecting space 502.

The flow of dust and air inside the cleaner when the main motor is driven will be described below.

Fig. 46 is a sectional view showing the flow of air and dust of the cleaner body. Further, fig. 47 is a plan view showing the flow of air and dust of the cleaner body.

As shown in the drawing, when the user operates the cleaner 1, the main motor 35 starts to be driven, and air mixed with dust can be sucked through the suction device 20 by the suction force generated by the main motor 35.

The air mixed with the dust is sucked through the connector 401 of the cleaner body 10, and may be sucked into the interior of the dust tub 50 through the suction port 511 of the dust tub 50. In addition, in the dust bucket 50, the first cyclone 54 and the second cyclone 55 can trap dust and fine dust in the separated first dust collecting space 501 and second dust collecting space 502, respectively.

In detail, the air mixed with the dust flowing into the suction port 511 flows into a space between the dust tub 50 and the strainer 541 through the flow path guide 518. At this time, the inflow air and dust are rotated and flowed along the inner wall of the dust bucket 50 by the flow path guide 518.

The flowing dust and air may filter the dust for the first time while passing through the dust filter 542 and the preliminary filter 541, and the filtered air may flow into a space inside the preliminary filter 541. The separated dust drops downward, passes through the guide unit 543, and is stored in the first dust collecting space 501. The dust collected in the first dust collecting space 501 may be doubly compressed by the dust compressing unit 56, the guide unit 543, and the backflow preventing part 531, and stored in the first dust collecting space 501.

The air filtered by passing through the filter and the strainer 541 flows into the inside of the housing 551 through the inlet 551a of the housing 551. At this time, the air flowing into the housing 551 is swirled along the inner wall of the housing 551 by the guide blade 552 on the inlet 551a side.

In the process, the dust particles and air are separated, so that the dust particles can be filtered a second time. The fine dusts separated inside the housing 551 may fall through the open lower surface of the housing 551 and be stored inside the second dust collecting space 502. The filtered air flows upward through the outlet 553a of the vortex guide 553, and then flows out of the dust tub 50 through the discharge port 512.

The air discharged through the discharge port 512 may filter the fine dust a second time during its passage through the pre-filter assembly 36. Further, the air having passed through the pre-filter assembly 36 flows to the space inside the upper frame 34, and passes through the main motor 35. The air passing through the main motor 35 flows downward through the plate hole 341a and passes through the filter unit 39 mounted on the lower frame 33.

In the course of passing through the filter unit 39, the ultra fine dusts contained in the air can be separated, and as a result, the ultra fine dusts can be filtered for the third time. Most of the filtered air cools the battery unit 38 below the filter unit, and can be discharged rearward through the rear cover 314.

In addition, a portion of the air passing through the filter unit 39 passes through the first barrier hole 331a, and in the process, the noise filter 302 and the main PCB 301 are cooled. The air that cools the noise filter 302 and the main PCB 301 may be naturally discharged from the inside of the body part 30 or discharged through the rear cover 314.

In order to empty the dust bucket 50 after the vacuum cleaner 1 is used, the pressing member 81 is first pressed to operate the locking assembly 80, thereby opening the cover member 40. When the cover member 40 is fully open, the cover member 40 will remain open under the action of the linkage assembly 90.

In this state, after the dust bucket 50 is separated from the body part 30, the lower cover 52 can be opened by operating the lower locking member 58. When the lower cover 52 is opened, the dust in the first dust collecting space 501 and the dust in the second dust collecting space 502 can be emptied. In addition, in order to clean and inspect the dust bucket 50, the upper cover 51 may be opened by operating the upper locking member 57, so that the components inside the dust bucket 50 can be separated and cleaned and inspected.

After the dust bucket 50 is emptied, the dust bucket 50 is mounted to the body part 30 again, and the cover member 40 is closed by rotating the cover member 40.

In addition, in using the cleaner 1, the user can hold the handle 23 and move it, and in the process, the travel of the cleaner body 10 can be adjusted.

Fig. 48 is a view showing a stopped state of the cleaner body.

As shown in the drawing, in a state where the cleaner body 10 is stopped without moving, the cleaner body 10 is in a state where the center of gravity G thereof is located more rearward than the rotation center C of the moving wheel 60.

In this state, the cleaner body 10 is rotated in the clockwise direction (forward direction) with reference to the rotation center C of the moving wheel 60, and the rear half 313 of the base 31 is lowered and the front half 312 is raised.

At this time, the rear wheel unit 70 is in contact with the floor surface, prevents the rear half 313 of the base 31 from excessively descending downward, and elastically supports the base 31 to maintain the cleaner body 10 in a stable state.

That is, the moving wheels 60 and the rear wheel units 70 on both sides are in contact with the floor, and the cleaner body 10 is in a three-point supporting state. The cleaner body 10 is in a state where the rear of the cleaner body 10 where the center of gravity is located is lowered, and can maintain a stable posture in a stopped state.

Thus, the front half of the cleaner body 10 can maintain the set angle α regardless of the presence or absence of dust or the amount of dust inside the dust bucket 50. In this state, the detection unit 306 can determine the posture of the cleaner body 10 by the angle.

That is, the detection unit 306 determines that the cleaner body 10 is in a stopped state without moving by recognizing that the front half 312 is held at the set angle α, and thus the wheel motor 632 can be kept in a stopped state without being driven.

Fig. 49 is a view showing a traveling state of the cleaner body.

As shown in the drawing, when the user moves forward while holding the handle 23 for cleaning, the suction hose 24 connected to the handle 23 is pulled. Further, since the connector 401 to which the suction hose 24 is connected is located at the cover member 40, a force acts at a position higher than the rotation center C of the moving wheel 60. Accordingly, the cleaner body 10 is rotated counterclockwise (in the reverse direction) with reference to the rotation center C of the moving wheel 60 by the rotation torque.

Although the angle β between the front half 312 and the floor surface may be different according to the magnitude of the force applied to the connector 401, it is smaller than the angle α set in the state where the cleaner body 10 is stopped. Further, even if the force applied to the connector 401 becomes large, the front half 312 is not in direct contact with the floor surface by the front wheels 312a, but is in contact with the floor surface by the front wheels 312a, so that the cleaner 1 is stably moved.

For example, in a state where the cleaner body 10 is stably driven, the central portion 311 is horizontal to the floor surface. Further, the front half 312 may form an angle of 20 ° with the floor surface and the rear half 313 may form an angle of 10 ° with the floor surface by the counterclockwise movement of the cleaner body 10. In this state, the cleaner body 10 can be driven in a desired manner, but the angle of the cleaner body 10 may be changed according to the magnitude of the instantaneous force pulled by the user or the state of the floor.

The detection unit 306 detects the posture of the cleaner body 10 to determine the rotation of the moving wheel 60. When the detection unit 306 detects that the angle β between the front half 312 and the ground is smaller than the set angle α, the wheel motor 632 is driven to rotate the movable wheel 60 counterclockwise. The cleaner body 10 can be driven forward by the rotation of the moving wheel 60.

In this case, the detection unit 306 may immediately drive the wheel motor 632 when the detected angle is smaller than the set angle α, or may drive the wheel motor 632 when the change value detected by the detection unit 306 exceeds a set range (for example, 1 ° to 2 °) as necessary.

In addition, since the detecting portion 306 can detect a change in the angle β of the front half 312 to the ground, the rotation speed of the wheel motor assembly 63 can be adjusted in proportion to the change in the angle. For example, when the angle β between the front half 312 and the floor surface is sharply decreased, the rotation speed of the wheel motor 632 is also increased, and the cleaner body 10 is moved forward at a high speed. Further, in the case where the angle of the front half 312 to the ground is made relatively slow, the rotation speed of the wheel motor 632 can be made relatively slow.

When the distance from the user is reduced by the forward movement of the cleaner body 10, the force applied to the connector 401 may be reduced or eliminated, and when the force applied to the connector 401 is eliminated, the cleaner body 10 rotates clockwise with respect to the rotation center of the moving wheel 60, and the state shown in fig. 48 is achieved again. At this time, the detecting part 306 may confirm that the front half 312 reaches the set angle α with the ground, thereby stopping the driving of the wheel motor assembly 63.

Accordingly, when the user moves while holding the handle 23 while using the vacuum cleaner 1, the user applies a force to the connector 401 to move the vacuum cleaner body 10 forward. Further, when the cleaner body 10 travels forward and the distance to the user becomes shorter, the force applied to the connector 401 side becomes weaker, and when the force applied to the connector 401 disappears, the cleaner body 10 rotates clockwise by the center of gravity and stops.

In addition, when the angle formed by the bottom surface or the front half 312 of the dust bucket 50 and the floor surface (cleaning surface) is equal to or less than a set angle (α < set angle < β) with respect to the angle formed by the bottom surface or the front half 312 of the dust bucket 50 and the floor surface (cleaning surface) while the vacuum cleaner 1 is in a running state, the driving of the wheel motor unit 63 can be decelerated. That is, after a constant speed is maintained at the set angle, deceleration is started when the set angle is reached, and the vehicle stops when the set angle α is reached. Of course, the determination of the angle may be based on the central portion 311 and the rear half portion 313 instead of the front half portion 312.

When such a process is repeated, the cleaner body 10 will track the user according to the user's movement, thereby enabling autonomous movement of the cleaner body 10 even if the user does not perform an additional operation to move the cleaner body 10.

Since the front half 312 is formed in an inclined manner, in the case where a threshold or an obstacle exists during traveling, it will be possible to effectively cross the threshold or the obstacle and move. That is, even in a situation where an obstacle occurs, the cleaner body 10 can stably travel, and thus the travel is continued while crossing the obstacle.

When the user moves over an obstacle having a high height or lifts the handle 23, the cleaner body 10 is rotated clockwise with respect to the center of the moving wheel, and the rear half 313 is moved toward the floor. At this time, the rear wheel unit 70 is in contact with the ground, and the rear half portion 313 can be prevented from being excessively lowered or overturned. Further, the rear wheel unit 70 elastically supports the rear half 313 so that the cleaner body 10 reaches a state shown in fig. 48 when the external force applied to the cleaner body 10 is removed.

The cleaner body 10 may detect an obstacle O during traveling, and when the obstacle O is detected, the cleaner body 10 may be driven to avoid the obstacle by adjusting the driving of the moving wheels 60.

Fig. 50 is a view showing an obstacle avoidance traveling state of the vacuum cleaner.

As shown in the drawing, when the cleaner body 10 starts to travel while traveling or in a stopped state, the obstacle detecting means 44 may detect an obstacle O. The obstacle detecting member 44 is provided in plurality on the front surface of the cover member 40 formed in a curved shape, and the obstacle detecting member 44 performs a evasive running after detecting the obstacle O within a range of a set angle.

For example, as shown in the drawing, when an obstacle is detected by the front sensor 44c of the obstacle detecting member 44 during the travel of the cleaner body 10, the main PCB 301 or the detection PCB 360a calculates the position of the obstacle O.

In addition, when the position of the obstacle O is calculated, the main PCB 301 may change the traveling direction of the cleaner body 10 to avoid the obstacle by increasing the rotation of the moving wheels 60 on the side close to the obstacle O among the moving wheels 60 on the left and right sides.

At this time, the main PCB 301 may drive only one of the wheel motors 632 on both sides, or may avoid the obstacle O by changing the rotation speeds or the rotation directions of the wheel motors 632 on both sides.

Further, the rotation speed of the wheel motor 632 may be changed according to the distance of the obstacle detected in the obstacle detecting member 44. That is, the rotation speed of the wheel motor 632 may be relatively slow when the obstacle O is detected from a long distance, and the rotation speed of the wheel motor 632 may be relatively fast when the obstacle O is detected from a short distance.

As described above, the vehicle can travel while avoiding the obstacle O by actively using the obstacle detection member 44 without additionally performing an operation for avoiding the obstacle O.

Although the embodiment of the present invention has been described with reference to the case where the cleaner body 10 travels forward, since the rear half portion 313 is also inclined, the cleaner body 10 may automatically travel backward according to the change in the angle of the rear half portion 313.

As shown in the drawing, the obstacle detecting means 44 detects an obstacle within a set detection distance L. For example, the obstacle detecting member 44 may have a detection distance of approximately 650 mm.

In this case, the detection distance L of the obstacle detection member 44 may be set to a distance that does not detect the floor surface when the front wheel 312a contacts the floor surface when the cleaner body 10 rotates counterclockwise.

This is because, if the detection distance L is set to be excessively long, the floor surface may be recognized as an obstacle when the front half 312 of the cleaner body 10 is rotated in the counterclockwise direction. On the contrary, if the detection distance L is set to be too short, since the evasive start is performed very quickly after the obstacle in front of the cleaner body 10 is detected, inconvenience may be caused in use by the user, and even if the evasive start is performed, the obstacle may not be completely evasive.

Accordingly, the obstacle detection member 44 may have a set distance L that does not detect the floor surface when the cleaner body 10 is rotated, and can effectively avoid an obstacle and travel after detection.

Further, by disposing the obstacle detecting member 44 on the front surface of the cover member 40, which is the uppermost end of the cleaner body 10, the irradiation angle of the obstacle detecting member is set so that the obstacle can be effectively detected while avoiding detection of the floor surface even when the angle at which the cleaner body 10 is set is changed.

For example, in the case where the obstacle detecting member 44 is provided on the lower surface of the cleaner body 10 or at a lower position, the light irradiated from the obstacle detecting member 44 is directed only toward the ground, and an obstacle detection error is inevitably generated due to the detection of the ground. In particular, it is particularly important in the nature of the rotating cleaner body 10 to select a position where only an obstacle can be recognized without detecting the floor surface.

Fig. 52 is a view showing a wall surface traveling state of the cleaner body.

As shown in the drawing, the cleaner body 10 may move along an indoor wall surface or a wall surface of furniture for cleaning. As described above, in the case of moving along a wall surface, the cleaner body 10 needs to recognize the wall surface, travel along the wall surface without getting out of the wall surface, and then rotate after the cleaner body 10 completely escapes from a corner.

For this reason, the obstacle detecting member 44 may be set such that the

front sensors

44b, 44c and the

side sensors

44a, 44d have different detection distances L1, L2 from each other. The detection distance L1 of the

front sensors

44b and 44c may be set longer than the detection distance L2 of the

side sensors

44a and 44 d. For example, in the case where the front sensor has a detection distance L1 of approximately 650mm, the

side sensors

44a, 44d may be set to have a detection distance L2 of approximately 300 mm.

When the detection distance L2 of the

side sensors

44a and 44d is equal to or longer than the detection distance of the

front sensors

44b and 44c, the detection distance L2 of the

side sensors

44a and 44d causes the

front sensors

44b and 44c to become too far from the wall surface, and as a result, the

front sensors

44b and 44c and the

side sensors

44a and 44d cannot detect the wall surface at the same time, and the wall surface may not be recognized. Therefore, by making the detection distance L2 of the

side sensors

44a and 44d as short as possible, the

front sensors

44b and 44c and the

side sensors

44a and 44d can be recognized at the same time when the cleaner body 10 is closer to the wall surface.

Further, when the

front sensors

44b and 44c and the

side sensors

44a and 44d simultaneously detect an obstacle during the travel of the cleaner body 10, the cleaner body 10 may travel along a wall surface without performing an evasive operation by determining the obstacle as a wall surface. That is, the vehicle travels while keeping the

front sensors

44b and 44c and the

side sensors

44a and 44d detecting the wall surface.

When the

front sensors

44b and 44c recognize that no obstacle exists and the

side sensors

44a and 44d recognize that no obstacle exists after the cleaner body 10 continuously travels along the wall surface, the cleaner body 10 determines that the cleaner body has passed the corner of the wall surface, and thus the cleaner body can travel in the direction of the corner.

At this time, the cleaner body 10 can be operated to further advance by a predetermined distance and rotate after the

side sensors

44a and 44d confirm the absence of the obstacle. That is, the cleaner body 10 is rotated after completely passing through the corner, so that the rear portion of the cleaner body 10 can be prevented from colliding with the wall surface.

The present invention is capable of other embodiments in addition to those described above.

The components of other embodiments of the present invention except for a part of the components will be the same as those of the previous embodiments, the same names will be given to the same components, and detailed descriptions thereof will be omitted.

Fig. 53 is a view showing a state in which a main body of a cleaner body according to another embodiment of the present invention is inclined forward. Fig. 54 is a view showing a state where the main body is inclined rearward. Further, fig. 55 is a diagram showing a structure of a support portion of another embodiment of the present invention.

Referring to fig. 53 to 55, the cleaner body 1000 includes: a body portion 1110, a moving wheel 1120, and a battery 1130.

A dust bucket 1105 for storing dust sucked through the suction device 1160 may be provided at the body portion 1110. The pair of moving wheels 1120 may be coupled to both sides of the body part 1110, respectively. The battery 1130 may be detachably coupled to the body part 1110.

In the cleaner body 1000, a portion where the connector 1103 is disposed may be defined as a front portion and a portion where the battery 1130 is disposed may be defined as a rear portion with reference to a vertical line V passing through a rotation center of the moving wheel 1120. The forward rotation of the main body 1110 means that the main body 1110 rotates counterclockwise in the drawing (see fig. 53), and the backward rotation of the main body 1110 means that the main body 1110 rotates clockwise (see fig. 54).

The cleaner body 1000 may further include a driving part for driving the moving wheel 1120. The cleaner body 1000 may control the driving of the moving wheel 1120 by the control unit based on detection information of a detection unit for detecting the movement of the cleaner body 1000.

In the case where the sensing part is in an OFF (OFF) state, the moving wheel 1120 may not be driven. In this case, the body part 1110 will be inclined according to the position of the center of gravity. For example, when the center of gravity of the main body 1110 is located forward of a vertical line V through which the rotation center of the moving wheel 1120 passes, the main body 1110 is inclined forward as shown in fig. 53, and when the center of gravity of the main body 1110 is located rearward of the vertical line V, the main body 1110 is inclined rearward as shown in fig. 54.

When the detection portion is turned ON, the control portion may control driving of the moving wheel 1120 such that the center of gravity of the body portion 1110 is located ON a vertical line V through which the rotation center of the moving wheel 1120 passes. In this case, as shown in fig. 54, the bottom surface B of the body portion 1110 may be spaced apart from the floor surface G.

The cleaner body 1000 may further include a rear wheel unit 1140. The rear wheel unit 1140 is disposed behind the bottom surface of the main body 1110, and may perform a function of limiting an angle at which the main body 1110 is inclined rearward.

The rear wheel unit 1140 may further include an extension 1144. An auxiliary wheel 1142 may be rotatably coupled to one side of the extension portion 1144. The other of the extensions 1144 can be rotatably coupled to the body portion 1110 using the shaft 1146. In addition, the extension 1144 can rotate upward or downward within a-a'.

The rear wheel unit 1140 may further include an elastic member 1150. For example, the elastic member 1150 may be a torsion spring. One end 1152 of the elastic member 1150 may be supported by the body portion 1110 and the other end 1153 of the elastic member 1150 may be supported by the extension 1144. The elastic member 1150 may apply an elastic force to rotate the extension 1144 in a clockwise direction on the drawing.

When the main body 1110 is inclined forward to the maximum extent, the front portion of the bottom surface B of the main body 1110 may contact the floor surface G. This can limit the maximum forward rotation angle of the main body 1110.

Conversely, when the body portion 1110 is inclined rearward, the rear wheel unit 1140 may contact the floor surface G. This can limit the maximum backward rotation angle of the main body 1110. This prevents the main body 1110 from turning forward or backward.

The bottom surface B of the body 1110 may form a predetermined angle θ with the floor surface G when the body 1110 is rotated rearward to the maximum. In this case, the angle θ between the bottom surface B of the main body 1110 and the floor surface G (ground surface) may be approximately 17 ° to 20 °.

A cover 1131 may be provided over the battery 1130. The cover 1131 may be exposed to the outside in a state where the battery 1130 is mounted on the main body 1110. Thus, the cover 1131 may form at least a portion of the outer shape of the body portion 1110. Further, the user may separate the battery 1130 from the main body 1110 or couple the battery 1130 to the main body 1110 without disassembling the main body 1110.

The process of mounting and dismounting the battery 1130 in and from the body portion 1110 will be described in detail below. However, the following description will be given taking as an example a case where the center of gravity of the main body 1110 is located forward when the battery 1130 is removed from the main body 1110, and the center of gravity of the main body 1110 is located rearward when the battery 1130 is coupled to the main body 1110.

Fig. 56 is a view sequentially showing a state where a battery is incorporated in the cleaner body.

Fig. 56 (a) is a view showing a state where the battery 1130 is separated from the main body 1110, (b) of fig. 56 is a view showing a state where the battery 1130 is coupled to the main body 1110, and (c) of fig. 56 is a view showing a state where the main body 1110 is inclined rearward.

A battery coupling portion 1107 for coupling the battery 1130 is formed in the main body portion 1110. The battery combining part 1107 may be formed by a portion of the body part 1110 being recessed.

The battery coupling portion 1107 is formed on the lower side of the main body portion 1110, whereby the battery 1130 is coupled to the lower side of the main body portion 1110. For example, in a state where the battery 1130 is attached to the main body 1110, the center of gravity of the battery 1130 may be located below the rotation center of the moving wheel 1120.

Therefore, when the battery 1130 is coupled to the main body 1110, the center of gravity of the main body 1110 may be moved downward, thereby improving the driving stability of the cleaner body 1000.

Although there is an advantage in that the driving stability is improved when the battery 1130 is coupled to the lower side of the body part 1110, a user may feel inconvenience when coupling the battery 1130 since the battery 1130 needs to be coupled to the lower side of the body part 1110.

However, in a state where the battery 1130 is separated from the main body 1110, the center of gravity of the main body 1110 may be positioned in front of a vertical line passing through the center of the moving wheel 1120. Thus, when the battery 1130 is separated from the main body 1110, the main body 1110 may be inclined forward with the moving wheel 1120 as a center.

As the main body 1110 is inclined forward, the front portion of the bottom surface of the main body 1110 comes into contact with the floor surface, and at this time, the battery coupling portion 1107 is inclined upward. Thereby, the user can easily couple the battery 1130.

The battery 1130 may be coupled in a direction inclined with respect to the main body 1110 by a coupling guide provided in the battery coupling portion 1107. Specifically, the insertion direction S of the battery 1130 may form an acute angle with the vertical line V and the floor surface. Accordingly, when the front portion of the bottom surface of the main body 1110 contacts the floor surface, the insertion direction S of the battery 1130 forms an acute angle with the floor surface.

When the battery 1130 is coupled to the body part 1110, the center of gravity of the body part 1110 may move backward. That is, in a state where the battery 1130 is coupled to the main body 1110, the center of gravity of the main body 1110 may be located behind a vertical line passing through the center of the moving wheel 1120.

That is, when the battery 1130 is coupled to the main body 1110, the main body 1110 may be inclined rearward about the moving wheel 1120. At this time, the rear wheel unit 1140 may be selectively contacted to a floor surface. At this time, the bottom surface B of the main body 1110 forms a predetermined angle θ with the floor surface G.

Specifically, (a) of fig. 57 shows a state before the battery 1130 is separated from the body portion 1110, and (b) of fig. 57 shows a state where the battery 1130 is separated from the body portion 1110.

To separate the battery 1130 from the body part 1110, a user may directly apply a force to the body part 1110, thereby tilting the body part 1110 in a forward direction. Next, the user may separate the battery 1130 in a direction opposite to the insertion direction S.

When the battery 1130 is separated from the body part 1110, the center of gravity of the body part 1110 is again moved forward. Thereby, the main body 1110 can maintain a forward inclined state.

As described above, in the vacuum cleaner of the present invention, in a state where the battery 1130 is attached to the main body 1110, the main body 1110 is rotated backward, and the bottom surface of the main body 1110 is spaced from the floor surface. That is, the body 1110 is supported at two points by the moving wheel 1120 while traveling. In this case, the cleaner body 1000 can more easily move over an obstacle, and since the running friction acting on the moving wheels 1120 is reduced, the labor required for the user to move the cleaner body 1000 can be reduced.

When the battery 1130 is separated from the main body 1110, the center of gravity of the main body 1110 moves forward, and the main body 1110 rotates forward, so that the battery coupling portion 1107 provided at the rear lower side of the main body 1110 rises. Thereby, the user can easily couple the battery 1130 to the battery coupling portion 1107.

A vacuum cleaner of an embodiment of the present invention includes: a cleaner body; a moving wheel provided to the cleaner body to rotatably support the cleaner body; a wheel motor assembly provided to the cleaner body for rotating the moving wheel; a suction part including a suction hose connecting the suction part for sucking dust and the cleaner body, the suction hose being connected to the cleaner body at a position spaced apart from a rotation center of the moving wheel; a detection part arranged in the cleaner body and used for detecting the slope of the cleaner body; and a PCB driving the wheel motor assembly when the slope of the cleaner body detected by the detection part exceeds a set angle; the center of gravity of the cleaner body is located in a direction opposite to the connection position of the suction hose with reference to the rotation center of the moving wheel.

The cleaner body may include a base forming a bottom of the cleaner body, the base being located more forward than a rotation center of the moving wheel and including a front half formed in an inclined manner farther from the floor surface toward the front.

A front wheel may be mounted at the front half, the front wheel being selectively contacted with the floor according to the rotation of the cleaner body.

The base may be located more forward than the rotation center of the moving wheel and include a rear half formed in an inclined manner farther from the ground as it gets closer to the front.

A rear wheel unit may be mounted at the rear half, the rear wheel unit being selectively contacted with the floor according to the rotation of the cleaner body.

The rear wheel unit may include: a leg rotatably mounted to the base; a rear wheel rotatably mounted to an extended end of the leg; and an elastic part extending at one side of the rear wheel in a manner of having inclination or curvature, wherein an extended end of the elastic part is in contact with a bottom surface of the base and is elastically deformed according to rotation of the leg.

A battery unit for supplying power to drive the cleaner may be provided at the cleaner body, the battery unit being disposed at a position more rearward than a rotation center of the moving wheel.

A main motor for providing suction force may be provided in the cleaner body, and the main motor may be disposed at a position more rearward than a rotation center of the moving wheel.

The detection portion may include a gyro sensor.

The present invention may include: and an obstacle detection member provided on a front surface of the cleaner body, for detecting an obstacle in front.

The obstacle detecting member may include a laser sensor.

The obstacle detecting members may be plural ones arranged on the same extension line and arranged to face in mutually different directions.

The cleaner body may include: a body part mounted with a dust barrel, into which the sucked dust is separated from air and stored; a cover member provided to the main body in an openable and closable manner, for selectively shielding an upper surface of the dust bucket; the obstacle detecting member is provided to a front surface of the cover member with a curvature.

The pair of moving wheels may be provided at both sides of the body, and the wheel motor assemblies may be connected to the pair of moving wheels, so that the moving wheels can be independently driven.

When the obstacle detection device detects an obstacle, the PCB may drive the wheel motor assembly of one of the wheel motor assemblies of both sides.

The PCB may make the rotation speeds of the wheel motor assemblies at both sides different from each other when the obstacle detecting device detects an obstacle.

The PCB may rotate the wheel motor assemblies at both sides in opposite directions to each other when the obstacle detecting device detects an obstacle.

A base frame for partitioning an inner space of the body in a front-rear direction may be installed at an inner side of the body, and a dust bucket for collecting dust may be installed in front of the base frame.

The base frame may include: a lower frame mounted with a battery unit for supplying power to drive the cleaner; and an upper frame installed at an upper end of the lower frame to form a space for accommodating a main motor for providing suction.

The upper frame may be provided with a pair of first side walls, and the main motor may be disposed between the pair of first side walls, and the main motor may perform suction and discharge of air in the front-rear direction.

A sub motor for assisting dust suction may be provided at the suction part, and a sub PCB for driving the sub motor may be provided at an outer side surface of the first sidewall.

The main motor may be disposed to be biased against one of the pair of first side walls, and a plate hole for discharging air is formed on a bottom surface of the side upper frame.

A partition hole through which air flowing through the plate hole passes may be formed at a front surface of the lower frame, the PCB is mounted at the front surface of the partition hole, and a noise filter for removing noise of a power supply is disposed at a rear surface of the partition hole.

A rear opening communicating with the space of the lower frame may be formed at a rear surface of the cleaner body, and a rear cover for opening and closing the rear opening may be provided at the cleaner body.

The lower frame may include a pair of second sidewalls that are disposed in a spaced-apart manner from each other to provide a space for mounting the battery cells and guide the entrance and exit of the battery cells; battery restraint grooves that are restrained by the second side walls are formed on both side surfaces of the battery cell.

A battery restraint portion may be formed at one side wall of the pair of second side walls, the battery restraint portion being protrudingly formed to be insertable into the battery restraint groove, and a battery restraint member, which is separately formed to be insertable into the battery restraint groove, may be mounted at the second side wall of the opposite side.

The present invention may further comprise: a dust bucket disposed at the cleaner body for catching the sucked dust; the dust bucket includes: a transparent case formed in a cylindrical shape for separating and storing dust sucked into the air; an upper cover for forming the upper surface of the dust barrel and forming a suction inlet and a discharge outlet; and a lower cover for opening and closing the lower surface of the dust barrel, which is open.

The lower cover may include: a lower cover shaft rotatably coupled to a lower end of the transparent case; and a lower hook provided at a position corresponding to the lower cover shaft, and configured to lock a housing locking portion that is restricted at a lower end of the transparent housing, so that the lower cover is kept in a closed state.

The present invention may include: a lower locking piece mounting part which is configured on the transparent shell up and down; and a lower locking member which is mounted on the lower locking member mounting portion in a vertically movable manner, and which is released from engagement with the housing locking portion by pushing the lower hook when moving downward.

The upper surface of the hook and the lower end of the lower locking piece contacting with the upper surface of the hook may be formed in an inclined manner.

The present invention may further comprise: an inner housing formed in a cylindrical shape and disposed inside the dust tub; the inner case includes: a first dust collecting space for collecting dust between the inner housing and the dust tub; and a second dust collecting space for collecting dust inside the inner housing.

The present invention may further comprise: a compression motor assembly disposed at one side of the cleaner body where the dust bucket is installed; the transmission gear is arranged on the lower cover and is connected with the compression motor assembly when the dust barrel is installed; and a dust compressing unit disposed in the inner housing, and rotating in combination with the transmission gear to compress dust in the first dust collecting space.

The transmission gear may include: the first transmission gear is arranged on the lower surface of the lower cover and is connected with the compression motor assembly; the second transmission gear is combined with the rotating shaft of the first transmission gear, arranged on the upper surface of the lower cover and connected with the dust compression unit; the lower cover is provided with a bearing, and a rotating shaft of the first transmission gear is in through combination with the bearing.

The present invention may include: a seal plate disposed on an upper surface of the second transmission gear; an inner seal member fixedly attached to the seal plate and configured to hermetically seal a lower surface of the inner cover, which is open; and a shaft coupling member penetrating the seal plate and fastened to the second transmission gear so that the seal plate is independently rotatably attached.

The inner seal may include: a first airtight part formed in a disc shape and contacting with an open lower end of the inner housing; and the second airtight part is arranged above the first airtight part in a spaced mode and is in contact with the inner side face of the inner shell.

The upper cover can be detachably mounted on the upper surface of the transparent shell, an upper groove which is used for being combined with each other and is provided with a convex upper protrusion and a concave upper groove is formed in the upper end of the inner side of the transparent cover and the upper cover, and an upper locking piece used for restraining one end of the upper cover is arranged at the upper end of the transparent shell opposite to the upper groove.

An upper locking piece mounting portion may be formed on an outer side surface of the transparent case, the upper locking piece being rotatably mounted on the upper locking piece mounting portion, the upper locking piece extending higher than an upper end of the transparent case and being selectively locked and restricted to the upper cover.

The cleaner body may include: a main body part detachably mounted with a dust bucket for separating and storing dust in the sucked air; a cover member rotatably mounted to the body part for selectively shielding an upper portion of the dust bucket.

The cover member may be provided with a connector connected to the suction device, the connector communicating with the suction port of the dust bucket in a state where the cover member is closed.

A locking assembly may be provided at the cover member, the locking assembly being selectively protruded to both side directions by a user's operation so as to be restricted to the body portion.

The locking assembly may include: a pressing member which is attached to an outer surface of the lid member, the outer surface being formed as a grip portion to be gripped by a user, so as to be capable of pressing operation; a transmission member that moves up and down to transmit a pressing operation of the pressing member; a pair of main links which are in contact with the transmission member and rotate by the transmission member; and the auxiliary connecting piece is connected with the main connecting piece and performs linear reciprocating motion, and the end part of the auxiliary connecting piece enters and exits the cover member and is clamped and restricted in the body part.

The main coupling may include: a penetration part rotatably coupled to both sides of the transmission member; a first extension portion extending toward the transmission member at the through portion and having an inclined surface contacting an inclined lower end of the transmission member; and a second extension portion extending in a direction perpendicular to the first extension portion, the sub-link shaft being coupled to the second extension portion.

A coupling guide may be formed at the cover member, the coupling guide receiving the sub-coupling and guiding movement of the sub-coupling, an entrance and exit opening formed to be open may be formed at a side surface of the cover member corresponding to the coupling guide, and an end of the sub-coupling may enter and exit the entrance and exit opening.

A coupling assembly may be provided between the cover member and the body portion, the coupling assembly connecting the cover member and the body portion to enable the cover member to be maintained in an open state.

A cover member coupling portion may be formed at an end portion of the cover member to extend rotatably with the body portion, and one end of the link assembly may be rotatably mounted to the cover member coupling portion and the other end may be slidably mounted to the body portion.

The coupling assembly may include: a rotary coupling rotatably mounted at one end to the cover member; a slider rotatably mounted to the other end of the rotary link, the slider being accommodated at one side of the body part and linearly reciprocating when the cover member is opened and closed; an elastic member provided between the cover member and the slider to elastically support the slider.

A coupling member assembly receiving portion that is open in the rotation axis direction of the lid member and can receive at least a part of the slider and the rotary coupling member may be formed in the body portion.

A slider guide may be formed at the coupling assembly receiving part, the slider guide contacting both side surfaces of the slider for guiding the linear reciprocating motion of the slider.

A pair of support portions spaced apart from each other may be formed at the rotary coupling, the pair of support portions including: a slider fixing part protruding in a direction opposite to each other to be rotatably coupled with the slider; a support protrusion protruding outward and engaged with the interference protrusion protruding from the coupling member assembly accommodating portion; and a support slit cut at an end of the support portion along between the slider fixing portion and the support protrusion for providing elasticity of the support protrusion.

The interference protrusion may be formed at a position where it interferes with the support protrusion in a state where the cover member is opened by a set angle, and the interference protrusion supports the support protrusion to restrict rotation of the cover member.

The vacuum cleaner body may be provided with a bracket, and the protrusion on one side of the suction device is engaged and restricted to the bracket so that the suction device is placed on the bracket, and the bracket is combined with the vacuum cleaner body after being molded by a metal material.

Industrial applicability

According to the embodiments of the present invention, the flow of air can be improved, and thus has high industrial applicability.

Claims

1. A vacuum cleaner in which, in a vacuum cleaner,

the method comprises the following steps:

a cleaner body;

a cover member openably and closably attached to an upper portion of the cleaner body and forming a part of a front surface and an upper surface of the cleaner body;

a suction hose provided at a front surface of the cover member;

a hole communicating with the suction hose at a front surface of the cover member;

a main motor provided inside the cleaner body for forcing the flow of air;

a battery unit disposed inside the cleaner body;

a base frame dividing the interior of the cleaner body into a space in which an upper portion of the main motor is disposed and a space in which a lower portion of the battery unit is disposed;

a frame hole formed in the base frame and opened to direct air discharged from the main motor toward a space in which a lower portion of the battery unit is disposed;

a filter unit disposed to shield the frame hole, and filtering dust in the air discharged from the main motor;

a PCB provided inside the cleaner body, the PCB being cooled by air passing through the filter unit; and

a discharge port formed at a rear surface of the cleaner body and at a position lower than the hole,

the air flowing in through the hole is discharged to the discharge port after passing through the inside of the cleaner body.

2. The vacuum cleaner of claim 1,

the base frame includes:

the cover plate divides the interior of the dust collector body up and down, and the main motor is arranged on the upper surface of the cover plate; and

and the partition board extends downwards from the lower surface of the cover plate and divides the interior of the dust collector body into a space for accommodating the filter unit and a space for accommodating the PCB.

3. The vacuum cleaner of claim 2,

the filter unit is disposed at the rear of the partition plate, the PCB is disposed at the front of the partition plate,

partition holes opened to allow air passing through the filter unit to flow into the PCB side are formed in the partition.

4. The vacuum cleaner of claim 2,

the battery unit is disposed below the filter unit,

a part of the air passing through the filter unit passes through the battery cell and cools the battery cell,

another portion of the air passing through the filter unit passes through the partition and cools the PCB.

5. The vacuum cleaner of claim 2,

a mounting member is provided in front of the partition plate, a dust bucket exposed to the front of the cleaner body is mounted on the mounting member, and the PCB is provided in a space between the mounting member and the partition plate.

6. The vacuum cleaner of claim 2,

the PCB is installed on the front surface of the partition board, the noise filter for removing the noise of the input power supply is installed on the rear surface of the partition board,

the partition between the PCB and the noise filter is formed with a partition hole as a flow passage of air passing through the filter unit.

7. The vacuum cleaner of claim 3,

the base frame further includes a pair of sidewalls spaced apart from each other at an upper surface of the cover plate to form a space accommodating the main motor,

the main motor is formed at a position biased to one side of the pair of side walls,

the frame hole is configured to be exposed through between the main motor and the side wall on a side remote from the main motor.

8. The vacuum cleaner of claim 7,

the partition hole is located in a region on the same extension line as the plate hole formed in the cover plate.

9. The vacuum cleaner of claim 1,

a rear opening exposing the filter unit and the battery unit is formed on a rear surface of the cleaner body,

the cleaner body is provided with a rear cover for opening and closing the rear opening.

10. The vacuum cleaner of claim 9,

the discharge port is formed in a grill shape at the rear cover.