JP2020146173A - Vacuum cleaner and suction port body thereof - Google Patents

Abstract

To provide a floor brush with improved dust removing performance and a vacuum cleaner equipped with the floor brush.SOLUTION: A floor brush 24 sucks dust by the drive of an electric blower by being communicated with a suction side of the electric blower. The floor brush 24 includes a case body 31 and a plurality of suction chambers 35 formed in the case body 31. The plurality of suction chambers 35 each include a suction port 41 opened at a position of the case body 31 that faces a floor surface. The suction port 41 of each suction chamber 35 is located aligned in the front and back of the case body 31. A degree of vacuum of a back side suction port 47 located relatively in the back side is higher than that of a front side suction port 46 located relatively in the front side.SELECTED DRAWING: Figure 1

Description

An embodiment of the present invention relates to a suction port body of a vacuum cleaner having a plurality of suction ports opened in the front and rear of the main body, and an electric vacuum cleaner provided with the suction port body.

Conventionally, as a floor brush as a suction port body used by being connected to an extension pipe of an electric vacuum cleaner or a vacuum cleaner main body, there is one provided with a plurality of suction ports in the front and rear.

However, since there is no difference in the degree of vacuum between these plurality of suction ports, the types of dust that can be sucked by the floor brush using these plurality of suction ports are limited, and it cannot be said that dust removal is sufficient.

In particular, in order to suck in large dust, it is necessary to sufficiently separate the ribs that partition the front part of the front suction port from the surface to be cleaned, and as a result, the degree of vacuum of the front suction port decreases. The ability to remove fine dust is reduced.

JP-A-59-230523 JP-A-59-230528

An object to be solved by the present invention is to provide a suction port of an electric vacuum cleaner with improved dust removal and an electric vacuum cleaner provided with the suction port body.

The suction port body of the vacuum cleaner of the embodiment is a suction port body that sucks dust by driving the electric blower by communicating with the suction side of the electric blower. This suction port body has a main body and a plurality of suction chambers formed in the main body. Each of the plurality of suction chambers is provided with a suction port opened at a position facing the surface to be cleaned of the main body. The suction ports of these suction chambers are located side by side in front of and behind the main body. The degree of vacuum of the suction port located on the rear side is higher than that of the suction port located on the front side.

It is a top view which shows the suction port body of the vacuum cleaner of 1st Embodiment from below. (a) is a vertical cross-sectional view of the suction port body at a lateral position, and (b) is a central vertical cross-sectional view of the suction port body of the same as above. It is a perspective view which shows the suction port body from below. It is a perspective view which shows from the front by cutting out a part of the suction port body as above. It is a rear view which shows a part of the suction port body as above. It is a perspective view which shows the electric vacuum cleaner provided with the suction port body as above. It is a bottom view of the vacuum cleaner provided with the suction port body of the vacuum cleaner of the second embodiment. It is a perspective view of the same as above.

Hereinafter, the configuration of the first embodiment will be described with reference to FIGS. 1 to 6.

In FIG. 6, reference numeral 11 denotes a so-called canister type vacuum cleaner, and the vacuum cleaner 11 is a pipe that is a wind passage forming body that is detachably connected to the vacuum cleaner main body 12 and the vacuum cleaner main body 12. It has a part 13.

The vacuum cleaner main body 12 can rotate and travel on the floor surface as a surface to be cleaned, and has an electric blower 15, a main body control unit (not shown) that controls the operation of the electric blower 15, and the electric blower 15 and the main body control. It houses a cord reel device for supplying power to the unit and a power supply unit such as a secondary battery, and also has a dust collecting unit 18 communicating with the suction side of the electric blower 15. Further, in the front portion of the vacuum cleaner main body 12, a main body suction port 19 is formed so as to communicate with the dust collecting portion 18 and to connect the base end side of the pipe portion 13. In the present embodiment, for example, a cyclone separation type dust collector is used as the dust collector 18, but any dust collector such as a paper pack or a filter can also be used.

The pipe portion 13 includes a hose body 21, an extension pipe 22 made of, for example, a synthetic resin that can be attached to and detached from the hose body 21, and a floor brush 24 as a suction port that can be attached to and detached from the extension pipe 22. I have.

The hose body 21 includes a flexible hose portion 25, a connecting pipe portion 26 provided on the base end side (downstream side) of the hose portion 25 and connected to the main body suction port 19, and the tip end side of the hose portion 25. It has a hand operation unit 27 provided on the (upstream side).

The base end side (downstream side) of the extension pipe 22 is detachably connected to the hand operation unit 27. Further, the hand operation unit 27 is formed with a grip portion 28 gripped by the user protruding toward the proximal end side, and the grip portion 28 has a setting button for setting an operation mode of the electric blower 15 and the like. 29 are placed.

The floor brush 24 shown in FIGS. 1 to 5 sucks dust on the floor surface by running on the floor surface. In the following, the front-rear direction and the left-right direction (both sides direction, width direction) are based on the traveling direction of the floor brush 24, and the vertical direction is the anti-gravity direction when the floor brush 24 is placed on a flat floor surface. And the direction of gravity. The floor brush 24 includes a case body 31 which is a main body formed in a vertically long shape extending in the left-right direction, that is, horizontally long, and a connecting pipe 32 (FIG. 6) rotatably connected to the rear portion of the case body 31. ing. Further, a rotating brush 33 as a rotating cleaning body is rotatably attached to the floor brush 24. Further, the floor brush 24 is rotatably attached with wheels 34 that allow the floor brush 24 to travel in the front-rear direction.

The case body 31 is divided into a plurality of suction chambers 35. Further, the case body 31 is provided with an air passage 36 that communicates with the suction chamber 35. Further, the case body 31 is provided with a front shielding portion 37, a rear shielding portion 38 which is a shielding portion, and a rear shielding portion 39 at a lower portion facing the floor surface.

Each of the suction chambers 35 is provided with a suction port 41 opened at a lower portion facing the floor surface of the case body 31, and in the present embodiment, a plurality of suction chambers 35 are set in the front-rear direction, which is the traveling direction of the floor brush 24 or the case body 31. There is. Specifically, the case body 31 includes a front suction chamber 43, which is one suction chamber located relatively on the front side, and a rear suction chamber 44, which is another suction chamber located on the rear side. It is set. Therefore, the suction port 41 is provided with a front suction port 46 provided in the front suction chamber 43 and a rear suction port 47 provided in the rear suction chamber 44. That is, a pair of front and rear suction chambers 35 and 41 suction ports is set. The number of the suction chamber 35 and the suction port 41 is not limited to this, and may be set to be 3 or more side by side in the front-rear direction.

The front suction chamber 43 is arranged on the front end side in the case body 31. The front suction chamber 43 is formed larger in the vertical direction than the rear suction chamber 44, and has a larger volume than the rear suction chamber 44. Further, the front suction chamber 43 is located so that the rear portion, that is, the downstream side extends above the rear suction chamber 44. Further, the top surface portion (upper surface portion) 43a of the front suction chamber 43 is located on the back surface side of the front surface of the case body 31 and is configured to gradually incline upward toward the rear side.

Further, the front suction port 46 provided in the front suction chamber 43 is arranged on the front end side of the case body 31 and sucks relatively large dust. The front suction port 46 is formed in a longitudinal shape along the left-right direction of the case body 31. Further, the front suction port 46 is set to have a larger front-rear dimension than the rear suction port 47.

On the other hand, the rear suction chamber 44 is arranged in the case body 31 at a substantially central portion in the front-rear direction, or on the rear side of the central portion.

Further, the rear suction port 47 provided in the rear suction chamber 44 is arranged behind the front suction port 46 and substantially at the center of the case body 31 in the front-rear direction or closer to the rear than the center. Has been done. That is, the front suction port 46 and the rear suction port 47 are arranged side by side in the front-rear direction. The rear suction port 47 is formed in a longitudinal shape along the left-right direction of the case body 31, has a narrow dimension in the front-rear direction, and has a long slit shape in the left-right direction. Further, the rear suction port 47 is formed to have a width dimension substantially equal to that of the front suction port 46. Therefore, the rear suction port 47 is set to have a smaller opening area than the front suction port 46. Further, the rear suction port 47 is set to have a higher degree of vacuum than the front suction port 46, and sucks in relatively small dust. Further, the rear suction port 47 is divided into a plurality of parts in the left-right direction intersecting or orthogonal to the front-rear direction which is the traveling direction. Specifically, in the present embodiment, the rear suction port 47 is divided into three left and right, and is partitioned from each other. That is, the rear suction port 47 is formed with (one and other) partition wall portions 48, 49, and these partition wall portions 48, 49 form a first rear side located in the central portion in the left-right direction. The central suction port 47a, which is a suction port, and the (one and other) side suction ports 47b, 47c, which are the second and third rear suction ports located on the left and right sides of the central suction port 47a, are set. ing. For this reason, the rear suction chamber 44 is also divided into a plurality of left and right sides corresponding to the central suction port 47a and the side suction ports 47b and 47c, and three in the present embodiment.

The central suction port 47a and the side suction ports 47b and 47c are set to have substantially the same width dimension, or the central suction port 47a is set to a width dimension larger than the side suction ports 47b and 47c. The top surfaces 44a and 44a of the rear suction chamber 44 corresponding to the central suction port 47a are raised in an inclined manner from the left and right sides of the central suction port 47a toward the central portion in the left-right direction, and the floor brush 24 Alternatively, both left and right sides, which are both ends, are set lower than the center side in the left-right direction which intersects or is orthogonal to the front-rear direction which is the traveling direction of the case body 31. That is, the top surfaces 44a and 44a are formed in a mountain shape that gradually rises from both sides in the left-right direction toward the center, and are in a V shape when viewed from the front. Further, the top surfaces 44b and 44c of the rear suction chamber 44 corresponding to the side suction ports 47b and 47c are the ends opposite to the central suction ports 47a of the side suction ports 47b and 47c, that is, the partition wall portion 48, It is erected from 49 toward the center in the left-right direction. That is, these top surfaces 44b and 44c are formed substantially symmetrically with each other, and are inclined substantially linearly so as to gradually increase toward the central portion in the left-right direction of the rear suction port 47. For this reason, the top surface 44b and the top surface 44c are arranged so as to form a V shape when viewed from the front. Further, the upper ends of these top surfaces 44b and 44c are located above the top surfaces 44a and 44a at the central portion in the left-right direction of the rear suction port 47.

The partition walls 48 and 49 are formed in a rib shape along the front-rear direction. These compartment wall portions 48 and 49 are located between the central suction ports 47a and the left and right side suction ports 47b and 47c.

The air passage 36 connects each suction chamber 35 or suction port 41 to the connection pipe 32 (FIG. 6), and carries dust sucked from the suction port 41 of the suction chamber 35 to the connection pipe 32 (FIG. 6). It is formed. That is, the air passage 36 has a first communication passage 51 communicating with the front suction chamber 43 provided with the front suction port 46 and a second communication passage communicating with the rear suction chamber 44 provided with the rear suction port 47. 52 is partitioned. The first communication passage 51 and the second communication passage 52 are located side by side, for example, one above the other. That is, the first communication passage 51 and the second communication passage 52 are vertically partitioned via a wall portion 54 that is continuous with the top surfaces 44b and 44c and is provided along the front-rear direction.

The first communication passage 51 is formed so that the lower wall portion 54 gradually inclines upward from the front side, that is, the upstream side to the rear side, that is, the downstream side. Therefore, the first communication passage 51 is formed so that the cross section of the air passage becomes smaller toward the downstream side.

The air passage cross section at the downstream end of the second communication passage 52 is set to be larger than the air passage cross section at the downstream end of the first communication passage 51. The second communication passage 52 is divided into a plurality of sections corresponding to the division of the rear suction chamber 44 or the rear suction port 47. Specifically, in the present embodiment, the second communication passage 52 is a central communication passage 52a communicating with the central suction port 47a and a (one and other) side communication passage communicating with the side suction ports 47b and 47c. It is divided into 52b and 52c. The central passage 52a is partitioned by a connecting wall portion 56 that connects the top surfaces 44a and 44a and extends horizontally from the lower part of the wall portion 54 to the rear. Further, the side passages 52b and 52c are divided by a connecting wall portion 56, a wall portion 54, and a partition wall portion 57 that connects the upper portion of the connecting wall portion 56 and the lower portion of the wall portion 54 in the vertical direction. Has been done. Therefore, the side passages 52b and 52c are partitioned on the left and right of the upper part of the central passage 52a, and the first passage 51 is partitioned above the side passages 52b and 52c.

The front shielding portion 37 is located in front of the front suction port 46, and partitions the front edge portion of the front suction port 46. The front shielding portion 37 is formed in a rib shape that is long in the left-right direction and projects downward on the floor surface side. Further, a guide portion 37a for guiding the dust on the front side to the front suction port 46 is formed at the lower end portion which is the tip portion of the front side shielding portion 37. The guide portion 37a is a chamfered portion whose front side, which is opposite to the front suction port 46, is chamfered so as to be curved rearward.

The rear shielding portion 38 is interposed between the front suction port 46 and the rear suction port 47. That is, the rear shielding portion 38 is located behind the front suction port 46 and in front of the rear suction port 47, and covers the rear edge portion of the front suction port 46 and the front edge portion of the rear suction port 47. It is a partition. The rear shielding portion 38 is formed in a longitudinal shape along the left-right direction, and projects downward on the floor surface side. Further, the lower end portion of the rear shielding portion 38 is located below the lower end portion of the front shielding portion 37, that is, close to the floor surface. The lower end portion of the rear shielding portion 38 is formed in a flat shape extending in a plane shape in the front-rear and left-right directions.

The rear shielding portion 39 is located behind the rear suction port 47, and partitions the trailing edge portion of the rear suction port 47. The rear shielding portion 39 is formed in a longitudinal shape along the left-right direction, and projects downward on the floor surface side. Further, the lower end portion of the rear shielding portion 39 is located below the lower end portion of the front shielding portion 37, that is, close to the floor surface, and has a height substantially equal to that of the rear shielding portion 38. The lower end of the rear shielding portion 39 is formed in a plane shape that spreads in a plane shape in the front-rear and left-right directions. Therefore, the rear shielding portion 39 is formed substantially flush with the rear shielding portion 38. In addition, partition wall portions 48 and 49 are bridged between the rear shielding portion 39 and the rear shielding portion 38.

As a result, the rear suction port 47 is located closer to the floor surface side than the front suction port 46.

In the present embodiment, the rear shielding portion 38, the rear shielding portion 39, the top surfaces 44a, 44b, 44c, the partition wall portions 48, 49, the wall portion 54, the connecting wall portion 56, and the partition wall portion 57 are, for example, It is integrally formed by the middle case 59 which forms a part of the case body 31.

The connection pipe 32 shown in FIG. 6 is a portion that connects the floor brush 24 to a connection portion such as the tip of the extension pipe 22. The connecting pipe 32 is rotatably provided with respect to the case body 31. Further, the connecting pipe 32 has a front end portion which is an upstream end inserted into the rear portion of the case body 31, and the first connecting passage 51 and the second connecting passage 51 and the second connecting passage shown in FIGS. 2 (a) and 2 (b). It is arranged so as to face the rear end, which is the downstream end of the passage 52. Therefore, the first communication passage 51 and the second communication passage 52 are configured to meet at the connecting pipe 32 (FIG. 6).

The rotating brush 33 shown in FIG. 1 rotates to scrape out dust that has entered the floor surface of a carpet or the like. The rotating brush 33 is arranged so as to have an axial direction along the left-right direction which is the longitudinal direction of the front suction port 46 of the suction port 41, and both ends thereof are axially supported by the case body 31. Further, the rotating brush 33 has a plurality of cleaning members such as brush bristles made of synthetic resin and blades made of soft synthetic resin in the circumferential direction of the outer peripheral surface. Then, the rotary brush 33 is rotationally driven at high speed by a drive source such as a motor (not shown) by the user operating the setting button 29 (FIG. 6) or the like as necessary during cleaning.

The wheels 34 rotate in contact with the floor surface when the user moves the floor brush 24 or the case body 31 back and forth on the floor surface to reduce friction and place the floor brush 24 or the case body 31 on the floor surface. It is a trailing wheel that runs on. In the present embodiment, the wheels 34 form a pair located near the rear portion of the suction port 41 (rear side suction port 47). In the present embodiment, the pair of front wheels 61, 61 and these front wheels 61, 61 Further, in the present embodiment, a pair of rear wheels 62 and 62, which form a pair located near the rear end of the case body 31 at the rear, are set.

The front wheels 61 and 61 are arranged at the lower part of the case body 31 behind the suction port 41, and in the present embodiment near the rear part of the rear suction port 47. More specifically, the front wheels 61 and 61 are arranged adjacent to the rear portion of the rear shielding portion 39. These front wheels 61 and 61 each have a rotation axis along the left-right direction, and are arranged so as to be separated from each other on the left and right. Further, these front wheels 61 and 61 are located behind the partition wall portions 48 and 49. That is, these front wheels 61 and 61 are arranged behind the position between the central suction port 47a of the rear suction port 47 and the side suction ports 47b and 47c. Further, these front wheels 61 and 61 are located at the lower part on the front end side of the connecting pipe 32 (FIG. 6).

The rear wheels 62 and 62 are located below the case body 31 and further behind the front wheels 61 and 61. That is, these rear wheels 62, 62 each have a rotation axis along the left-right direction, and are arranged so as to be separated from each other on the left and right.

Next, the operation of the first embodiment will be described.

At the time of cleaning, the user first connects the hose body 21 to the main body suction port 19 of the vacuum cleaner main body 12 via the connection pipe part 26, and the hand operation part 27 on the tip side of the hose body 21. The extension pipe 22 and the floor brush 24 are sequentially connected to each other. Therefore, the suction chamber 35 (suction port 41) of the floor brush 24 communicates with the suction side of the electric blower 15.

Next, when the floor brush 24 is placed on the floor surface and the user holding the grip portion 28 operates the predetermined setting button 29 in a state where power can be supplied from the power supply unit to the main body control unit and the electric blower 15. The main body control unit controls the input of the electric blower 15 according to the operation mode set by the setting button 29, and the electric blower 15 is driven.

Further, by moving the floor brush 24 back and forth on the floor surface, the user sucks dust together with air from the suction port 41 of the floor brush 24 by the action of the negative pressure generated by the drive of the electric blower 15.

The sucked dust-containing air is sucked into the dust collecting unit 18 to remove dust, and the sucked air from which the dust has been removed is sucked into the electric blower 15 and passes through the electric blower 15 to become exhaust air. Exhaust air is exhausted to the outside of the vacuum cleaner body 12 from an exhaust port (not shown) provided at the rear of the vacuum cleaner body 12. When the cleaning is completed, the user operates the setting button 29, and the main body control unit stops the electric blower 15. At this time, if the rotating brush 33 is operating, the rotating brush 33 is also stopped.

When sucking the dust, the suction port 41 sucks in the front suction port 46 because the vacuum degree of the front suction port 46 is relatively large and the vacuum degree of the rear suction port 47 is relatively small. Dust finer than dust is sucked in through the rear suction port 47.

In this way, since the degree of vacuum of the rear suction port 47, which is a suction port located relatively rearward, is higher than that of the front suction port 46, which is a suction port located relatively on the front side, the rear suction port 47 The ability to suck up relatively small dust (fine dust) can be improved, relatively large dust can be sucked from the front suction port 46, and relatively small dust can be sucked from the rear suction port 47, that is, the front side. Large dust can be sucked in by the suction port 46, and the remaining dust can be sucked in by the rear suction port 47, so that dust removal can be improved.

Further, since the rear suction port 47 is located closer to the floor surface side than the front suction port 46, the vacuum degree of the rear suction port 47 should be easily made higher than the vacuum degree of the front suction port 46. Can be done.

Further, a rear shielding portion 38 is provided between the front suction port 46 and the rear suction port 47 of the case body 31 so as to project toward the floor surface side and partition the front suction port 46 and the rear suction port 47. Therefore, the degree of vacuum of the rear suction port 47 can be easily made higher than the degree of vacuum of the front suction port 46.

Further, a front shielding portion 37 is provided in front of the front suction port 46 of the case body 31, and the front shielding portion 37 protrudes in front of the rear suction port 47 and behind the front suction port 46 toward the floor surface side of the front shielding portion 37. Since the rear shielding portion 38 is provided, the degree of vacuum of the rear suction port 47 can be easily made higher than the degree of vacuum of the front suction port 46.

Further, since the rear shielding portion 38 projecting toward the floor surface side from the front shielding portion 37 in front of the front suction port 46 of the case body 31 is provided in front of the rear suction port 47, the floor brush 24 As the process progresses, relatively large dust that has entered the front suction port 46 from the lower part of the front shielding portion 37 becomes difficult to cross the rear shielding portion 38, and this dust can be sucked more reliably at the front suction port 46.

Further, the air passage 36 communicating with the suction side of the electric blower 15 of the case body 31 has a first communication passage 51 communicating with the front suction chamber 43 having the front suction port 46, and the rear side having the rear suction port 47. Since the suction chamber 44 is provided with the first communication passage 51 communicating with the suction chamber 44 and the second communication passage 52 partitioned, the dust sucked from the front suction port 46 and the dust sucked from the rear suction port 47 are merged. It can be collected in the same dust collecting unit 18. Moreover, the degree of vacuum between the front suction port 46 and the rear suction port 47 is not only the opening area and shape of the front suction port 46 and the rear suction port 47, but also the first communication passage 51 and the second passage 51 and the second. It can be easily set by the cross-sectional area of the air passage on the downstream side with the communication passage 52.

Specifically, since the rear suction port 47 is narrow and the suction air does not easily flow, the pressure loss is large. Therefore, the cross section of the air passage on the downstream side of the second communication passage 52 is changed to the air passage on the downstream side of the first communication passage 51. By making it larger than the cross-sectional area, it becomes easy to secure a sufficient degree of vacuum at the rear suction port 47.

Further, when the rear suction port 47 is formed in a longitudinal shape on the left and right, the degree of vacuum acts mainly on the central portion directly facing the connecting pipe 32, and it becomes difficult to suck dust at both the left and right ends. Therefore, the rear suction port 47 is used. A sufficient degree of vacuum can be secured up to the left and right ends of the rear suction port 47 by dividing the vehicle into a plurality of parts in the left-right direction intersecting or orthogonal to the front-rear direction, which is the traveling direction.

Further, since the top surfaces 44a, 44b, 44c of the rear suction chamber 44 provided with the rear suction port 47 are lower on both ends than the central side in the left-right direction intersecting the front-rear direction, which is the traveling direction, the rear suction port A sufficient degree of vacuum can be easily secured up to the left and right ends of 47.

Further, since the front wheels 61 and 61 are provided in the vicinity of the rear suction port 47, the running performance of the floor brush 24 can be improved by the front wheels 61 and 61, and the rear suction port 47 does not come into contact with the floor surface. It can be brought close to the floor surface to the position of, and dust can be sucked in more effectively from the rear suction port 47. Moreover, since the front wheels 61 and 61 are located below the connecting pipe 32, even when the user applies a force to press the floor brush 24 against the floor surface via the hand operation unit 27 or the like, the front side The wheels 61 and 61 support the case body 31 at the position below the connecting pipe 32, and the rear suction port 47 can be easily brought closer to the floor surface without bending the case body 31.

Further, since the opening area of the rear suction port 47 is smaller than the opening area of the front suction port 46, it is possible to suppress the suction of the rear suction port 47, which has a relatively large degree of vacuum, to the floor surface. , Dust can be reliably sucked in without impairing the running performance of the floor brush 24.

Since the front suction port 46 is provided with a rotating brush 33 that cleans the floor surface by rotation, when the user appropriately rotates the rotating brush 33 according to the type of the floor surface, the degree of vacuum is relatively high. Even if the front suction port 46 has a low value, the rotating brush 33 scrapes out the dust on the floor surface so that the dust can be sufficiently sucked from the front suction port 46.

Next, the second embodiment will be described with reference to FIGS. 7 and 8. The same components and operations as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In FIG. 8, 71 indicates an electric vacuum cleaner, and the electric vacuum cleaner 71 is an autonomous traveling type robot cleaner that autonomously travels on a floor surface.

As shown in FIG. 7, the vacuum cleaner 71 includes a vacuum cleaner main body 73 which is a main body integrally provided with the same configuration as the case body 31 of the floor brush 24 of the first embodiment described above. An electric blower 74, a main body control unit (not shown), a dust collecting unit 76, a battery (secondary battery) 77, and the like are arranged on the machine main body 73.

That is, the vacuum cleaner main body 73 is formed with a rotating brush 33, a suction chamber 35, a front shielding portion 37, a rear shielding portion 38 which is a shielding portion, a suction port 41, and the like as in each of the above embodiments.

Further, drive wheels 78 and 78 as traveling drive units are provided in the lower portion of the vacuum cleaner main body 73 facing the floor surface, and the drive wheels 78 and 78 are connected by the main body control unit via motors 79 and 79. By being driven, the electric vacuum cleaner 71 or the vacuum cleaner main body 73 can autonomously travel on the floor surface. Further, side brushes 81 and 81 as swivel cleaning portions are provided on both sides of the front portion of the vacuum cleaner main body 73. These side brushes 81 and 81 are swiveled by a side brush motor (not shown).

The main body control unit drives the drive wheels 78 and 78 via the motors 79 and 79 so as to avoid obstacles detected by the sensor and obstacles recorded on the stored map, for example.

Each drive wheel 78 is for autonomously traveling the vacuum cleaner 71 or the vacuum cleaner main body 73 on the floor surface in the forward and backward directions, that is, for traveling, and has a rotation axis (not shown) along the left-right width direction. However, they are arranged symmetrically in the width direction. The drive wheels 78 may be, for example, an endless track.

Then, in the vacuum cleaner 71, for example, when a preset cleaning start time is reached, or when a cleaning start command signal transmitted by a remote controller or an external device is received, the main body control unit performs motors 79, 79. Alternatively, the drive of the drive wheels 78 and 78 is controlled to start cleaning from a predetermined start position, for example, a charging device for charging the battery 77. The vacuum cleaner 71 autonomously travels on the floor surface in the cleaning area while avoiding surrounding obstacles and concave steps detected by the sensor and following a pre-stored map, and dust is dusted by the rotating brush 33. The dust is sucked up from the suction port 41 and collected in the dust collecting part 76 while scraping up the dust with the side brushes 81 and 81.

At this time, the degree of vacuum of the rear suction port 47, which is a suction port located relatively rearward of the front suction port 46, which is a suction port located relatively on the front side, is high, and the same as in each of the above embodiments. By having the above-mentioned configuration, the same action and effect can be obtained.

In each of the above embodiments, the rear shielding portion 38 does not have to be flush with the rear shielding portion 39 as long as it projects toward the floor surface side from the front shielding portion 37, for example, the rear shielding portion 39. It may protrude toward the floor surface side.

Further, the rear shielding portion 38 is configured to partition between the front suction port 46 and the rear suction port 47. For example, the rear shielding portion 38 is located behind the front suction port 46 and in front of the rear shielding portion 38. A shielding portion may be provided separately.

Further, each shielding portion is not limited to a wall-shaped or rib-shaped one, and includes, for example, a seal or a lip.

Further, the rear suction port 47 may be divided into two or four or more on the left and right.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention to these embodiments. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

11,71 vacuum cleaner
15,74 Electric blower
24 Floor brush as a suction port
31 Case body that is the main body
33 Rotating brush that is a rotating cleaning body
34 wheels
35 suction room
36 wind path
37 Front shield
38 Posterior shield, which is a shield
41 Suction port
44a, 44b, 44c Top surface
51 First passage
52 Second passage
73 The main body of the vacuum cleaner

Claims (14)

It is a suction port body that sucks dust by driving the electric blower by communicating with the suction side of the electric blower.
With the main body
Each of the suction ports opened at a position facing the cleaning surface of the main body is provided, and a plurality of suction chambers formed in the main body are provided.
The suction ports of these suction chambers are located side by side in front of and behind the main body.
A suction port body characterized in that the suction port located relatively rearward of the suction port located relatively on the front side has a high degree of vacuum. The suction port body according to claim 1, wherein the suction port located relatively rearward of the suction port located relatively in front of the main body is located closer to the surface to be cleaned. .. The main body shall be provided with a shielding portion that protrudes toward the surface to be cleaned and partitions these suction ports between the suction ports located relatively on the front side and the suction ports located on the relatively rear side. The suction port body according to claim 1 or 2, characterized in that. The main body is
The front shield located in front of the suction port located relatively on the front side,
The second or third claim is characterized in that the rear shielding portion is located behind the suction port relatively located on the front side and protrudes toward the cleaning surface side from the front shielding portion. Suction port body. The suction port body according to claim 4, wherein the rear shielding portion is located in front of the suction port located on the rear side and behind the suction port located on the relatively front side. The main body is equipped with an air passage that communicates with the suction side of the electric blower.
The air passage is
A first communication passage that communicates with a suction chamber having a suction port located relatively on the front side, and
Any one of claims 1 to 5, characterized in that it is provided with a suction chamber having a suction port located relatively rearward and a second communication passage partitioned from the first communication passage. The suction port body described. The suction port body according to claim 6, wherein the air passage cross section on the downstream side of the second communication passage is larger than the air passage cross section on the downstream side of the first communication passage. The suction port body according to any one of claims 1 to 7, further comprising a rotary cleaning body that is rotatably provided at a suction port located relatively on the front side and that cleans the surface to be cleaned by rotation. The suction port body according to any one of claims 1 to 8, wherein the suction port located relatively rearward is divided into a plurality of suction ports in a direction intersecting the traveling direction. The invention according to any one of claims 1 to 9, wherein the suction chamber having a suction port located relatively rearward has a lower top surface on both ends than the center side in the direction intersecting the traveling direction. Suction port body. The suction port body according to any one of claims 1 to 10, wherein a wheel is provided in the vicinity of a suction port located relatively rearward. The suction port body according to any one of claims 1 to 11, wherein the suction port located on the relatively rear side has a smaller opening area than the suction port located on the relatively front side. Electric blower and
An electric vacuum cleaner comprising the suction port body according to any one of claims 1 to 12, which communicates with the suction side of the electric blower. Electric blower and
An electric vacuum cleaner that accommodates this electric blower and is provided with a vacuum cleaner main body capable of autonomous driving, in which the main body of the suction port body according to any one of claims 1 to 12 is integrally provided.

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