WO2011111884A1

WO2011111884A1 - Suction nozzle for vacuum cleaner

Info

Publication number: WO2011111884A1
Application number: PCT/KR2010/001480
Authority: WO
Inventors: 황정배; 황만태
Original assignee: 엘지전자 주식회사
Priority date: 2010-03-10
Filing date: 2010-03-10
Publication date: 2011-09-15
Also published as: AU2010347853A1; KR20120065379A; AU2010347853B2; KR101356530B1; CN102762139B; CN102762139A

Abstract

The present invention relates to a suction nozzle for a vacuum cleaner, which comprises: a case, having suction holes to aspirate dust; a punching member, which repeatedly applies pressure to a surface to be cleaned; and a cover plate, which is provided at the bottom of the case and covers the punching member, wherein the cover plate comprises: a first floor member and a second floor member, which face the surface to be cleaned; and a communication port, which enables the bottom surface of the punching member to contact the surface to be cleaned, wherein the bottom surface of the first floor member and the surface to be cleaned are separated from each other, and the bottom surface of the second floor member is grounded to the surface to be cleaned.

Description

Suction nozzle of vacuum cleaner

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction nozzle of a vacuum cleaner, and more particularly, to a suction nozzle of a vacuum cleaner including a cover plate provided at a lower end of a case of the suction nozzle to cover a punching portion for repeatedly pressing the surface to be cleaned.

In general, a vacuum cleaner is a device that sucks dust and foreign substances together with air by using a suction motor mounted inside the main body and then filters the same inside the main body.

The vacuum cleaner having the above function may be classified into a canister method in which a nozzle part, which is a suction port, is communicated through a connecting pipe, and an upright method in which the nozzle part is integrally formed with the main body.

The canister vacuum cleaner includes a cleaner main body including a suction motor for generating suction force, a suction nozzle for sucking dust and foreign substances on the surface to be cleaned by suction force generated from the cleaner main body, and a connection between the main body and the suction nozzle. Extension pipes and connecting pipes are included.

That is, when power is applied to the main body of the vacuum cleaner and the suction motor is driven, suction force is generated, and air containing dust and foreign matter on the surface to be cleaned is sucked by the suction nozzle. And air containing dust and foreign matter is introduced into the cleaner body through the extension pipe and the connection pipe. The air containing the dust and foreign matter, etc. introduced into the cleaner body is separated from the dust and the foreign matter while flowing inside the main body. The separated dust and foreign matters are stored in the cleaner body, and the air from which the dust and foreign matters are separated is discharged to the outside of the cleaner body.

Vacuum cleaners, on the other hand, can be used to clean the surface to be cleaned of bedding, such as duvets and carpets. Beddings such as duvets and carpets include textile materials that may contain fine dust and foreign matter. In other words, the blanket is a kind of blanket, generally filled with a natural and synthetic insulating material and wrapped in a cotton cover, so that the dust cover contains fine dust and foreign matter. Carpets are decorative fabrics, usually made of thick materials for floor coverings, usually made of wool or wool on the surface. Therefore, fine dust and foreign matter get caught between the thin hairs present on the carpet surface.

Therefore, in order to easily suck the fine dust and foreign substances present on the surface to be cleaned of beddings such as duvets and carpets into the main body of the cleaner, a device for pressurizing the surface to be brushed off to remove dust and foreign substances is provided inside the suction nozzle. Although provided in, the cover plate facing the surface to be cleaned was formed flat so that almost the entire bottom surface was grounded to the surface to be cleaned.

However, in the case of cleaning the blanket, the bottom plate is grounded to the surface to be cleaned, the cover of the cotton material is in close contact with the cover plate by the suction force of the suction motor to shield the communication port through which air containing dust and foreign matter flows in There is a problem that can not easily inhale dust and foreign matter. Furthermore, since the communication port is shielded, air does not flow smoothly, so the suction power of the vacuum cleaner is weakened, and thus, the vibration force of the device for pressing the surface to be cleaned to shake off dust and foreign matters is also weakened.

On the other hand, when cleaning the carpet, the fine dust and foreign matter caught between the thin hairs on the surface of the carpet is not easily separated even if the device to shake off the dust and foreign matter provided in the suction nozzle pressurized surface to be cleaned There is this. In addition, according to the cover plate grounded and flat on the surface to be cleaned, there is a problem in that fine dust and foreign matter existing between the hairs of the carpet surface are not easily separated because only the hair of the carpet surface is cleaned.

The present invention is to solve the above problems, comprising a case, a punching portion, a cover plate, the front of the cover plate to form a spaced apart from the surface to be cleaned, or by providing a locking jaw on the cover plate bedding such as duvets or carpet It is an object of the present invention to provide a suction nozzle of a vacuum cleaner for easily suctioning fine dust and foreign matter present on the surface to be cleaned of the article into the body of the cleaner.

The technical problem to be achieved by the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned above may be clearly understood by those skilled in the art from the following description. will be.

The suction nozzle of the vacuum cleaner of the present invention for achieving the above object, the case is formed with a suction hole for dust suction; A punching part for repeatedly pressing the surface to be cleaned; And a cover plate provided at a lower end of the case and covering the punching part. The cover plate includes a first bottom portion and a second bottom portion facing the surface to be cleaned, and a lower surface of the punching portion configured to include a communication hole for contacting the surface to be cleaned, wherein the first bottom portion A lower surface is spaced apart from the surface to be cleaned, and the lower surface of the second bottom part is grounded to the surface to be cleaned.

In another embodiment, the suction nozzle of the vacuum cleaner of the present invention for achieving the above object, a case in which a suction hole for dust suction is formed; A punching part for repeatedly pressing the surface to be cleaned; And a cover plate provided at a lower end of the case and covering the punching part. The cover plate includes: a first bottom portion and a second bottom portion facing the surface to be cleaned, a communication port for bringing a lower surface of the punching portion into contact with the surface to be cleaned, and provided in the communication hole and the first bottom. And a plurality of ribs connecting the lower surface of the part and the lower surface of the second bottom part, and at least one locking jaw provided between the lower surface and the rib of the first bottom part or between the lower surface and the rib of the second bottom part. It is characterized by.

According to the present invention, when cleaning a fluid to be cleaned, such as a blanket or other bedding, the front of the cover plate is formed so as to be spaced apart from the surface to be cleaned and the air passing between the lower surface and the surface to be cleaned By forming a guide groove for guiding the outer surface of the object to be cleaned is in close contact with the cover plate by the suction force of the suction motor to prevent the communication port through which the air containing dust and foreign matter flows.

On the other hand, when cleaning the object to be cleaned with a large number of hairs, such as carpet, by providing a locking jaw on the lower surface of the cover plate so that the hair existing on the surface of the object to be caught and bounced off, fine dust caught between the thin hairs And foreign matter can be easily sucked into the body of the cleaner.

Therefore, the present invention can selectively use cover plates having different configurations and functions when cleaning the objects to be cleaned having different characteristics, thereby improving the cleaning performance of the vacuum cleaner.

1 is a perspective view of a vacuum cleaner according to an embodiment in which the present invention is employed.

2 is a perspective view of a suction nozzle according to an embodiment of the present invention.

3 is a bottom view of a cover plate according to an embodiment of the present invention.

4 is a side view of a cover plate according to an embodiment of the present invention.

5 is a sectional view taken along line AA ′ of FIG. 3, which is a cover plate according to an embodiment of the present invention.

6 is a state diagram showing the operation of the cover plate according to an embodiment of the present invention.

7 is a perspective view of a suction nozzle according to another embodiment of the present invention.

8 is a bottom view of a cover plate according to another embodiment of the present invention.

9 is a side view of a cover plate according to another embodiment of the present invention.

10 is a state diagram showing the operation of the cover plate according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this process, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms that are specifically defined in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user or operator. Definitions of these terms should be made based on the contents throughout the specification.

In addition, the spirit of the present invention is not limited to the embodiments presented and those skilled in the art who understand the spirit of the present invention can easily implement other embodiments within the scope of the same idea, but this also falls within the scope of the present invention. Of course.

1 is a perspective view of a vacuum cleaner according to an embodiment in which the present invention is employed. Referring to Figure 1 will be described in detail the configuration and operation of the vacuum cleaner of the present invention.

The vacuum cleaner shown in FIG. 1 includes a main body 30 for generating a suction force using a suction motor, a connection part 20 for transmitting the suction force generated in the main body 30, and a connection part 20 at one side thereof. And a suction nozzle 10 which sucks dust and foreign substances scattered on the cleaning surface together with air.

The suction motor is mounted inside the main body 30, and when the suction motor is driven, suction power is generated to suck dust and foreign matter together with the air into the main body 30. Inhaled dust and foreign matter is filtered in the interior of the body (30).

The connection part 20 may be configured with an extension pipe 22 having a suction nozzle 10 mounted at one end thereof and having an adjustable length, and a connection pipe 24 connecting the extension pipe 22 and the main body 30. Extension tube 22 can be used to adjust the length according to the height of the user of the vacuum cleaner or the position of the surface to be cleaned. At the time of cleaning, the suction nozzle 10 connected to the extension pipe 22 moves back and forth and left and right with respect to the surface to be cleaned, so that the connection pipe 24 is made of a flexible material so that the user can easily clean it. desirable.

2 is a perspective view of a suction nozzle according to an embodiment of the present invention. 2, the suction nozzle of the present invention will be described in detail.

The suction nozzle 10 illustrated in FIG. 2 shows the case 100, the punching part 200, the cover plate 300, and the like in detail.

The suction nozzle 10 may have an appearance formed by the case 100, and the case 100 may be integrally formed, and may be formed of the upper case 102 and the lower case 104 to be coupled to each other. And the rear end of the case 100 is provided with a joint portion 108 of a diameter corresponding to the diameter of the extension tube 22 to be fitted to the extension tube 22.

On the other hand, one side of the case 100 is provided with a dust collecting visualization device 400 for showing the collection state of the foreign object on one side of the transmission path of the suction force generated in the main body 30 (see FIG. 1).

That is, the dust collecting visualization device 400 is to receive the air collected through the suction nozzle 10 and some of the dust and foreign matter contained therein to illustrate the state of receiving the dust to the outside, and to the inside of the main body 30. Shield a portion of the flow path of moving air. Therefore, a part of the air moving inside the main body 30 may be introduced into the dust collecting visualization device 400.

As described above, the case 100 forms an overall appearance of the suction nozzle 10. The lower case 104 is provided with a cavity 106 in which the punching part 200 for pressing the surface to be cleaned to remove dust and foreign matter is accommodated. The cavity 106 is formed by recessing the lower surface of the lower case 104 and communicates with the suction hole 110 for sucking dust and foreign matter together with the air.

In addition, a driving unit (not shown) for driving the punching unit 200 is provided in the case 100, and the punching unit 200 which presses the surface to be cleaned and separates the surface to be cleaned from dust and foreign matter present therein. It is connected to the driving unit on the outer lower surface of the lower case 104.

The suction nozzle 10 sucks dust and foreign matter together with air by the suction force of the suction motor mounted inside the main body 30 of the vacuum cleaner (see FIG. 1). Accordingly, the lower case 104 facing the surface to be cleaned is provided with a suction hole 110 for sucking dust and foreign matter together with the air.

The suction hole 110 may be integrally formed with the bottom surface of the case 100 or may be separately formed.

According to an embodiment of the present disclosure, the dust and the foreign matter separated by the pressing of the punching part 200 provided on the outer lower surface of the case 100 may be directly sucked into the main body 30 of the vacuum cleaner 30 (see FIG. 1). Ball 110 is preferably formed integrally with the lower case (104).

This is because the suction hole 110 should be provided adjacent to the punching unit 200 to directly suck the dust and foreign matter separated from the surface to be cleaned.

The punching unit 200 is connected to the driving unit so that the dust to be cleaned on the surface to be cleaned, such as carpet or bedding, to easily suck the inside of the cleaner body 30 (see Fig. 1) Pressurized repeatedly.

That is, when the punching part 200 repeatedly presses the surface to be cleaned, fine dust and foreign substances, etc., present on the surface to be cleaned are separated from the surface to be cleaned, and the separated dust and foreign matters are suction holes 110 formed in the case 100. ) Is sucked into the main body 30 of the vacuum cleaner (see FIG. 1).

On the other hand, the punching portion 200 is formed with a projection 202 to facilitate contact with the surface to be cleaned. That is, the protrusion 202 may protrude from the punching part 200 such that the punching part 200 is in contact with the surface to be cleaned, and may have a substantially hemispherical shape. In addition, in order to increase the cleaning effect, a plurality of small protrusions protruding from the protrusion 202 may be additionally formed.

In addition, to prevent noise generated when the surface to be cleaned of the punching part 200 is pressed, a noise preventing member 204 formed of an elastic material may be provided at both ends of the punching part 200.

The cover plate 300 is formed in a rectangular shape and is provided at the lower end of the case 100 to cover the punching part 200, and the bottom surface of the punching part 200 is in contact with the surface to be cleaned along the length direction of the punching part 200. The communication port 330 is formed.

That is, during cleaning, the suction nozzle 10 moves back and forth and left and right with respect to the surface to be cleaned. When the surface to be cleaned is a bedding such as a blanket or a carpet, the edges of the punching part 200 and the cavity 106 are formed on the surface to be cleaned. It becomes difficult to move the suction nozzle 10.

Therefore, by providing the cover plate 300 at the bottom of the case 100, the movement of the suction nozzle 10 with respect to the surface to be cleaned, such as bedding, becomes much easier.

3 is a bottom view of a cover plate according to an embodiment of the present invention. 4 is a side view of a cover plate according to an embodiment of the present invention. 5 is a front sectional view of a cover plate according to an embodiment of the present invention. 3 to 5 will be described in detail the configuration and operation of the cover plate of the present invention.

As described above, the cover plate 300 of the present invention is provided at the lower end of the case 100 and includes a first bottom part 310, a second bottom part 320, and a communication port 330. .

The first bottom portion 310 constitutes a front side of the bottom surface of the cover plate 300 provided on the bottom surface of the suction nozzle 10 and faces the surface to be cleaned. In addition, the front end of the first bottom portion 310 is formed in a curved shape and the edge is rounded, so that when the suction nozzle 10 moves back, forth, left and right with respect to the surface to be cleaned, it will not be caught by beddings such as duvets or carpets. Do not

The second bottom portion 320 constitutes a rear side of the bottom surface of the cover plate 300 provided on the bottom surface of the suction nozzle 10 and faces the surface to be cleaned.

The communication port 330 is formed between the first bottom part 310 and the second bottom part 320 such that the bottom surface of the punching part 200 contacts the surface to be cleaned.

That is, the punching unit 200 repeatedly presses the surface to be cleaned to remove dust and foreign matters, and the punching unit 200 is exposed to the outer surface of the cover plate 300 through the communication hole 330 to punch the punching unit 200. ) Is pressed against the surface to be cleaned.

In addition, the plurality of communication ports 330 divided into a plurality of ribs 340 are formed longer and wider than the punching part 200.

That is, the punching unit 200 is vibrated back and forth and left and right by the driving unit inside the suction nozzle 10, the punching unit 200 by providing a clearance as much as the vibration width of the punching unit 200 in the communication port 330 The noise generated due to the collision between the cover plate 300 and to prevent.

On the other hand, when cleaning the fluid to be cleaned, such as bedding or other bedding, so that the air containing dust and foreign matter passing between the lower surface and the surface to be cleaned of the cover plate 300 to smoothly flow into the suction nozzle (10) The lower surface of the first bottom portion 310 is formed to be spaced apart from the surface to be cleaned.

That is, the fluid to be cleaned such as duvets and other bedding is light in the outer shell, and the inside of the outer shell is filled with natural and synthetic insulating material, the fluidity is large. Therefore, the communication port 330 is in close contact with the cover plate 300 by the suction force of the suction motor.

Therefore, the lower surface of the first bottom part 310 is formed to be spaced apart from the surface to be cleaned, thereby preventing the communication port 330 from being shielded, thereby preventing dust and foreign matter passing between the surface of the cover plate 300 and the surface to be cleaned. The included air flows smoothly into the suction nozzle 10.

In addition, since the inflow rate of air increases as the area where air is introduced decreases, the bottom surface of the second bottom part 320 is preferably grounded to the surface to be cleaned. Like the first bottom part 310, the second bottom part 320 may also be formed to be spaced apart from the surface to be cleaned, thereby increasing the area into which air is introduced, thereby reducing the inflow rate of the air, thereby lowering the suction efficiency of the vacuum cleaner. Because.

The cover plate 300 is inclined upward in the direction opposite to the surface to be cleaned as it goes from the second bottom part 320 to the first bottom part 310. As described above, the bottom surface of the first bottom portion 310 is spaced apart from the surface to be cleaned, and the bottom surface of the second bottom portion 320 is grounded on the surface to be cleaned in order to easily inhale dust and foreign matter from the surface to be cleaned. For sake.

The cover plate 300 further includes a plurality of ribs 340 provided in the communication port 330 and connecting the bottom surface of the first bottom portion 310 and the bottom surface of the second bottom portion 320.

A rib 340 connecting the first bottom part 310 and the second bottom part 320 is provided in the cover plate 300 so that the first bottom part 310, the second bottom part 320, and the ribs ( The cover plate 300 including the 340 may be integrally formed.

The lower surface of the rib 340 is also preferably formed to have the same slope as the inclined surface formed in the direction opposite to the surface to be cleaned from the second bottom portion 320 to the first bottom portion 310. Therefore, during cleaning, the suction nozzle 10 can smoothly move back and forth and left and right with respect to the surface to be cleaned.

In addition, when the punching part 200 vibrates and presses the surface to be cleaned, the punching part 200 contacts the plurality of ribs 340 to restrict movement in the direction of the surface to be cleaned, so that the punching part 200 is excessively cased. It is exposed to the outside of the 100 to prevent getting caught in bedding, such as duvets.

On the other hand, even when the punching unit 200 is in contact with the rib 340 and the movement is limited, the protrusion 202 of the punching unit 200 must be in contact with the surface to be cleaned to press the surface to be cleaned, The height is preferably formed higher than the thickness of the rib 340.

In addition, the cover plate 300 is located at the rear of the first bottom 310 spaced apart from the surface to be cleaned in order to maximize the amount of air, including dust and foreign matter flowing into the suction nozzle 10 when cleaning the blanket. It is configured to further include a guide groove 350 formed.

That is, the guide groove 350 is provided between the bottom surface of the first bottom portion 310 and the plurality of ribs 340 to guide air passing between the bottom surface of the first bottom portion 310 and the surface to be cleaned. As shown in FIG. 5, the guide grooves 350 are provided between the plurality of ribs 340, and thus, the guide grooves 350 are formed in plural numbers corresponding to the number of the ribs 340.

Referring to FIG. 3 as an embodiment of the guide groove 350, the guide groove 350 is a side wall 340a of the rib 340 provided in the cover plate 300, and the first bottom portion 310 It is formed by a guide surface 352 extending from the rear end of the.

Since the guide groove 350 guides air passing between the lower surface of the first bottom portion 310 and the surface to be cleaned, the guide surface 352 is provided above the lower surface of the rib 340.

The side wall 340a of the rib 340 prevents air introduced into the guide groove 350 from leaking laterally in the suction nozzle 10, and the guide surface 352 sucks the air introduced into the guide groove 350. It guides to be sucked into the suction hole 110 provided in the case 100 of the nozzle 10.

On the other hand, the guide surface 352 is formed by the first inclined surface 354 and the second inclined surface 356, the first inclined surface 354 and the second inclined surface 356 by having a different inclination to the first bottom portion ( Air passing between the lower surface of the 310 and the surface to be cleaned is easily sucked into the suction nozzle 10.

That is, the first inclined surface 354 is formed to be inclined at the rear end of the first bottom portion 310, the second inclined surface 356 is provided with the rear of the first inclined surface 354 is extended and the first inclined surface 354 By having an inclination smaller than the inclination of, air flowing along the first inclined surface 354 impinges on the second inclined surface 356 and flows toward the suction hole 110 formed in the bottom surface of the case 100.

Therefore, the flow of air passing between the bottom surface of the first bottom portion 310 and the surface to be cleaned may be easily sucked into the suction nozzle 10 by directing the suction hole 110.

In addition, the guide groove 350 communicates with the communication port 330 provided in the cover plate 300, so that air passing between the lower surface of the first bottom part 310 and the surface to be cleaned is sucked through the communication hole 330. It is sucked into the inside of the nozzle 10.

As described above, the cover plate 300 is provided at the lower end of the case 100. During cleaning, the suction nozzle 10 is moved back and forth and left and right with respect to the surface to be cleaned. In this process, the cover plate 300 is grounded to the surface to be cleaned.

The cover plate 300 grounded on the surface to be cleaned should be fixed to the bottom of the lower case 104 in order to prevent separation from the case 100 forming the appearance of the suction nozzle 10.

Accordingly, the front end portion of the first bottom portion 310 of the cover plate 300 is provided with a protrusion 370 fitted to the bottom surface of the lower case 104. Protruding portion 370 is formed by protruding a portion of the front end portion of the first bottom portion 310, it is preferable to be configured in plurality in order to secure the cover plate 300 to the case 100 and also seek stability.

Corresponding to the protrusion 370 provided on the cover plate 300, an insertion hole (not shown) into which the protrusion 370 is fitted is provided at the bottom of the lower case 104. Insertion holes are formed in a number corresponding to the number of the projection 370.

In addition, a fastening part 380 that is elastically fastened to the case 100 is formed at the rear end of the second bottom part 320 of the cover plate 300.

That is, the protrusion 370 of the first bottom 310 is inserted into the insertion hole formed in the bottom of the case 100, and the fastening part 380 of the second bottom 320 is disposed on the bottom of the lower case 104. The cover plate 300 is fixed to the bottom of the lower case 104 while being elastically fastened. The fastening method between the fastening part 380 and the bottom of the lower case 104 may be any method that is elastically fixed and detached such as a snap fit method.

In the case of using the snap fit fastening method, the user can easily replace the cover plate 300 without using an additional tool.

6 is a state diagram showing the operation of the cover plate according to an embodiment of the present invention. Referring to Figure 6, when the suction nozzle of the present invention is used for bedding, such as futons will be described in detail the process of sucking air containing dust and foreign matter.

The user may use a vacuum cleaner to remove dust and foreign substances present on the surface of the blanket and the like. In this case, the bottom surface of the suction nozzle 10 of the vacuum cleaner is positioned to face the surface to be cleaned such as a blanket.

Then, the bottom surface of the suction nozzle 10 is brought into contact with the surface to be cleaned so that the suction nozzle 10 moves back and forth and left and right. In this case, if the surface to be cleaned is a bedding such as a blanket, it is generally filled with a natural and synthetic insulating material and wrapped in a surface of a cotton material, so that the surface to be cleaned has a fluidity. It is deformed to correspond to the shape of the bottom.

However, the suction nozzle 10 of the present invention has a first bottom portion 310 having a curved shape so as to be spaced apart from the surface to be cleaned, and also the air passing between the bottom surface of the first bottom portion 310 and the surface to be cleaned. By providing a guide groove 350 to guide the cover of the duvet close to the cover plate 300 to prevent the communication port 330 is shielded.

Therefore, even when cleaning the bedding having fluidity, such as futons, the suction nozzle 10 of the present invention can smoothly flow air containing dust and foreign matter through the communication port 330, thereby cleaning performance is Is maximized.

7 is a perspective view of a suction nozzle according to another embodiment of the present invention. The other embodiment of the present invention configured as shown in FIG. 7 is identical to the suction nozzle shown in FIG.

8 is a bottom view of a cover plate according to another embodiment of the present invention. 9 is a side view of a cover plate according to another embodiment of the present invention. 8 to 9 and the configuration and operation of the cover plate according to another embodiment of the present invention will be described in detail with the focus on the contents distinguished from the above.

As described above, the cover plate 1300 according to another embodiment of the present invention is provided at the lower end of the case 100, and includes a first bottom part 1310, a second bottom part 1320, and a communication hole 1330. ) And a plurality of ribs 1340.

When cleaning the carpet, the first bottom portion 1310 of the cover plate 1300 may be formed so that air including dust and foreign matter passing between the lower surface of the cover plate 1300 and the surface to be cleaned is smoothly introduced into the suction nozzle 10. At least one locking jaw 360 is provided between the lower surface and the rib 1340 or between the lower surface of the second bottom portion 1320 and the rib 340.

That is, when the suction nozzle 10 moves back, forth, left, and right with respect to the surface to be cleaned, hairs existing on the carpet surface are formed by the latching jaw 1360 formed on the cover plate 1300 grounded on the surface to be cleaned. It is caught by the locking jaw 360 and bounced. At this time, the fine dust and foreign matter sandwiched between the hair of the thin carpet is separated from the carpet, the air containing it is easily sucked into the main body of the vacuum cleaner 30 (see Fig. 1) through the suction nozzle 10 Cleaning performance is improved.

According to one embodiment, since the suction nozzle 10 is generally moved back and forth with respect to the surface to be cleaned during cleaning, in order to maximize the cleaning performance on the carpet, between the bottom of the first bottom portion 1310 and the rib 1340. The locking jaw 1360 is preferably provided between the bottom surface of the second bottom portion 1320 and the rib 1340.

The locking step 1360 is integrally formed with the first bottom part 1310, the second bottom part 1320, and the plurality of ribs 1340 constituting the cover plate 1300.

That is, the locking step 1360 is the rear end of the bottom surface of the first bottom portion 1310 and the front end portion of the bottom surface of the rib 1340 or the front end portion of the bottom surface of the second bottom portion 1320 and the bottom surface of the rib 1340. It is formed stepped so that the height between the ends is different.

Meanwhile, referring to the enlarged view of the locking jaw 1360 illustrated in FIG. 9, the point where the locking jaw 1360 is formed on the lower surface of the cover plate 1300 when the suction nozzle 10 moves back and forth is the surface to be cleaned and the ground. do.

That is, the rear end portion of the bottom surface of the first bottom portion 1310 and the front end portion of the bottom surface of the second bottom portion 1320 are grounded to the surface of the carpet, which is the surface to be cleaned, and the bottom surface of the rib 1340 is equal to the height difference of the locking step 1360. By being spaced apart from the surface to be cleaned, the hair of the carpet is easily caught on the latching jaw 1360. Thus, dirt and foreign matter present between the slender hairs of the carpet surface are easily separated from the carpet.

The lower surface of the first bottom portion 1310 of the cover plate 1300 is formed to be inclined upward in the direction opposite to the surface to be cleaned from the rear end to the front end portion, and the lower surface of the second bottom portion 1320 is from the front end to the rear end portion. Increasingly, it is formed to be inclined upward in the direction opposite to the surface to be cleaned.

As shown in FIG. 9, the first bottom part 1310 and the second bottom part 1320 are formed in a curved shape with respect to the center of the rib 1340.

That is, the point where the locking step 1360 is formed on the bottom surface of the cover plate 1300 is grounded with the surface to be cleaned, but the first bottom portion 1310 and the second bottom portion 1320 are bent upwardly inclined to be curved with the surface being cleaned. Reducing the friction force facilitates movement of the suction nozzle 10 with respect to the surface to be cleaned such as a carpet.

In addition, the rib 1340 provided between the first bottom portion 1310 and the second bottom portion 1320 also corresponds to the curved shape of the first bottom portion 1310 and the second bottom portion 1320. (1340) It is curved inclined upward in the opposite direction of the surface to be cleaned toward both ends from the center of the lower surface. Therefore, during cleaning, the suction nozzle 10 can smoothly move back and forth and left and right with respect to the surface to be cleaned.

10 is a state diagram showing the operation of the cover plate according to another embodiment of the present invention. Referring to FIG. 10, a process of sucking air containing dust and foreign matter when a suction nozzle according to another embodiment of the present invention is used for a cleaning surface such as a carpet will be described in detail.

The user may use a vacuum cleaner to remove dust and foreign substances present on the surface of the carpet or the like. In this case, the bottom surface of the suction nozzle 10 of the vacuum cleaner is positioned to face the surface to be cleaned such as a carpet.

Then, the bottom surface of the suction nozzle 10 is brought into contact with the surface to be cleaned to move the suction nozzle 10 forward, backward, left and right. In this case, when the surface to be cleaned is a carpet or the like, a thin hair generally exists on the surface, so that the rear end of the bottom surface of the first bottom portion 1310, which is the point at which the catching jaw 1360 is formed, and the bottom surface of the bottom surface of the second bottom portion 1320 are formed. The front end portion is pressed by the load of the suction nozzle 10 to the hair of the carpet in contact with it.

On the other hand, since the lower surface of the rib 1340 is spaced apart from the surface to be cleaned by the height difference of the locking step 1360, the shape of the carpet located on the lower surface of the rib 1340 does not change.

Therefore, when the suction nozzle 10 moves back and forth, the hair of the carpet located on the lower surface of the rib 1340 is caught by the catching jaw 1360, and the fine dust and foreign matter present therebetween are separated and the inside of the suction nozzle 10 is separated. Suction, the suction nozzle 10 is pressed to the hair with the dust and foreign matter separated on the locking step (1360).

Therefore, even when cleaning the object to be cleaned with a large number of hairs such as carpet, the suction nozzle 10 provided with the cover plate 1300 according to another embodiment of the present invention communicates air containing dust and foreign matters. It can be smoothly introduced through the 330, thereby maximizing the cleaning performance.

Although embodiments according to the present invention have been described above, these are merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments of the present invention are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the following claims.

Claims

A case in which a suction hole for dust suction is formed;

A punching part for repeatedly pressing the surface to be cleaned; And

A cover plate provided at a lower end of the case and covering the punching part; Including,

The cover plate includes a first bottom portion and a second bottom portion facing the surface to be cleaned, and a communication hole for bringing a lower surface of the punching portion into contact with the surface to be cleaned,

And a lower surface of the first bottom part is spaced apart from the surface to be cleaned, and a lower surface of the second bottom part is grounded to the surface to be cleaned.
The method of claim 1,

The first bottom part is provided in front of the cover plate, the second bottom part is provided in the rear of the cover plate,

The cover plate is a suction nozzle of the vacuum cleaner, characterized in that formed inclined upward toward the first bottom portion from the second bottom portion.
The method of claim 1,

The cover plate, the suction nozzle of the vacuum cleaner, characterized in that it further comprises a plurality of ribs provided in the communication port connecting the lower surface of the first bottom portion and the lower surface of the second bottom portion.
The method of claim 3,

The cover plate may further include a guide groove provided between the bottom surface of the first bottom portion and the plurality of ribs to guide air passing between the bottom surface of the first bottom portion and the surface to be cleaned. Suction nozzle.
The method of claim 4, wherein

The guide groove is in suction nozzle of the vacuum cleaner, characterized in that in communication with the communication port.
The method of claim 4, wherein

The guide groove may be formed by a side wall of the rib and a guide surface extending from a rear end of the first bottom portion and provided above the bottom surface of the rib.
The method of claim 6,

The guide surface is formed by a first inclined surface which is formed to be inclined at the rear end of the first bottom portion, and a second inclined surface which is provided behind the first inclined surface and has an inclination smaller than that of the first inclined surface. Suction nozzle of a vacuum cleaner.
A case in which a suction hole for dust suction is formed;

A punching part for repeatedly pressing the surface to be cleaned; And

A cover plate provided at a lower end of the case and covering the punching part; Including,

The cover plate may include a first bottom portion and a second bottom portion facing the surface to be cleaned, a communication port for bringing a lower surface of the punching portion into contact with the surface to be cleaned, a bottom surface of the first bottom portion, And a plurality of ribs connecting the lower surface of the second bottom portion and at least one locking jaw provided between the lower surface and the rib of the first bottom portion or between the lower surface and the rib of the second bottom portion. Suction nozzle of a vacuum cleaner.
The method of claim 8,

The first bottom part is provided in front of the cover plate, the second bottom part is provided in the rear of the cover plate,

The latching jaw is formed by a height difference between a rear end of the bottom of the first bottom part and a front end of the bottom of the rib or a front end of the bottom of the second bottom and a rear end of the bottom of the rib. Suction nozzle of the cleaner.
The method of claim 9,

The rear end of the lower surface of the first bottom portion and the front end of the lower surface of the second bottom portion are grounded to the surface to be cleaned, and the lower surface of the rib is spaced apart from the surface to be cleaned by the height difference. Nozzle.
The method of claim 8,

Wherein the first bottom portion is formed to be inclined upward from the rear end of the bottom surface of the first bottom portion to the front end portion, and the second bottom portion is formed to be inclined upward from the front end portion of the bottom surface of the second bottom portion to the rear end portion of the vacuum. Suction nozzle of the cleaner.
The method of claim 8,

And the rib is curved upwardly inclined toward both ends from the center of the bottom surface of the rib.
The method according to claim 1 or 8,

The cover plate further includes at least one protrusion protruding from the front end portion of the first bottom portion and fitted to the case, and at least one fastening portion formed at a rear end portion of the second bottom portion and elastically fastened to the case. Suction nozzle of a vacuum cleaner, characterized in that configured to.