Floor Brush for Vacuum Cleaner

Abstract

Provided is a floor brush for a vacuum cleaner that avoids tangling of hair, ensures reliable rotation of the rotary brush body, and guarantees the reliability of the operation of the floor brush for the vacuum cleaner. 【Solution means】The floor brush for a vacuum cleaner includes a floor brush cover plate 100, a floor brush base 200 having a dust collection chamber 220, a rotary brush body 300 provided in the dust collection chamber and having a rotary brush body chamber, a rotary brush strip assembly 340 provided on the rotary brush body, an end cover plate 400 provided at one end of the rotary brush body, a bearing cover plate 500 engaged with the end cover plate, a drive assembly 600 for driving the rotary brush body to rotate, a bearing cover plate holder 700 connected to the bearing cover plate, and an adapter movably connected to the floor brush base and located downstream of the dust collection chamber.

Description

Technical Field

[0001] The present invention relates to the technical field of household cleaning, and particularly to a floor brush for a vacuum cleaner.

Background Art

[0002] The floor brush for a vacuum cleaner is for sucking up dust on the floor according to the use of the vacuum cleaner, and often includes a rotating brush body that rotates around an axis. In the process of using the rotating brush body, dust is likely to get entangled on the outer surface of the rotating brush body. In particular, human or animal hair easily enters the bearing through the end cover plates at both ends. If it accumulates too much, it will prevent the rotation of the rotating brush body, and in severe cases, it will cause damage to the rotating brush motor. The same technology can refer to Chinese Utility Model CN1806740A. Therefore, there is a need for improvement.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The object of the present invention is to provide a floor brush for a vacuum cleaner that can effectively solve the above technical problems by having a fitting in different radial directions between the rotating brush body and the bearing cover plate, avoiding hair entanglement on the rotating brush body, enabling the hair to move in a direction away from the end cover, ensuring the reliable rotation of the rotating brush body, and guaranteeing the reliability of the operation of the floor brush for a vacuum cleaner.

Means for Solving the Problems

[0004] To achieve the object of the present invention, the present invention provides the following technical means. The floor brush for a vacuum cleaner includes a floor brush base having a dust collection chamber, a rotating brush body provided in the dust collection chamber and having a rotating brush body chamber, an end cover plate provided at one end of the rotating brush body, a bearing cover plate engaged with the end cover plate, and a drive assembly for driving the rotating brush body to rotate. The bearing cover plate includes a bearing cover recess, a bearing cover center hole located at the center of the bearing cover recess, a bearing cover flange provided so as to surround one end of the bearing cover center hole, a bearing chamber communicating with the bearing cover center hole and located within the bearing cover flange, a bearing cover sleeve provided so as to surround the other end of the bearing cover center hole, a bearing cover outer wall located outside the bearing cover recess, and a recess edge located outside the bearing cover recess. There is an interference fit and a clearance fit that are continuous in the rotational direction between the rotating brush body and the bearing cover plate.

[0005] Based on the above technical means, the following additional technical means are further included.

[0006] The end cover plate includes an end cover base, an end cover hole located on one side of the end cover base, and an end cover sleeve portion extending along the axial direction from one end of the end cover base and insertable into the rotating brush body chamber.

[0007] Inside the end cover sleeve portion, there are a sleeve chamber, a plurality of sleeve ribs located on the outer surface and spaced circumferentially, and a shaft-like portion located in the sleeve chamber and having a central axis hole. The central axis hole communicates with the end cover hole.

[0008] The end cover base has an axial clearance with the bearing cover plate in the axial direction of the rotating brush body, and there is a radial clearance between the end cover flange and the bearing cover outer wall. The radial clearance is smaller than the axial clearance.

[0009] A floor brush cover plate located on the floor brush base, an adapter movably connected to the floor brush base and located downstream of the dust collection chamber, and a rotating brush strip assembly provided on the rotating brush body, further comprising, the rotating brush strip assembly includes a plurality of first rotating brush strips and a plurality of second rotating brush strips, and the first rotating brush strip is provided adjacent to the corresponding second rotating brush strip.

[0010] A plurality of rotating brush body grooves for accommodating corresponding engaging arms are provided circumferentially on the rotating brush body, and a first rotating brush strip or a second rotating brush strip is provided between two adjacent rotating brush body grooves.

[0011] There is a first radial gap for partially accommodating the rotating brush strip assembly between the recess edge and the outer wall of the bearing cover.

[0012] The outer wall of the bearing cover includes a root portion of the outer wall of the bearing cover, a top portion of the outer wall of the bearing cover, a sloping portion of the outer wall of the bearing cover extending from the root portion of the outer wall of the bearing cover to the top portion of the outer wall of the bearing cover, and an inner wall of the bearing cover located inside the sloping portion of the outer wall of the bearing cover and abutting against the rotating brush strip assembly. There is a second radial gap between the recess edge and the inner wall of the bearing cover, and the second radial gap is smaller than the first radial gap.

[0013] The first rotating brush strip is a hair brush strip, the second rotating brush strip is a silicon rubber strip, and the radial distance between the end of the second rotating brush strip and the center of the rotating brush body is larger than the radial distance between the end of the first rotating brush strip and the center of the rotating brush body.

[0014] The floor brush base is located above the dust collection chamber and is provided adjacent to the bearing cover plate, and includes a guide rib for guiding hair to the middle part of the rotating brush body.

Advantages of the Invention

[0015] The beneficial effects of the present invention are as follows.

[0016] By having fits with different radial diameters between the rotating brush body and the bearing cover plate, the hair moves in a direction away from the end cover, avoiding entanglement of the hair, ensuring reliable rotation of the rotating brush body, and guaranteeing the reliability of the operation of the floor brush for the vacuum cleaner.

Brief Description of the Drawings

[0017] The drawings are provided for a further understanding of the present invention, form a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, but do not limit the present invention.

[0018]

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Figure 10

Modes for Carrying Out the Invention

[0019] In order to more clearly illustrate the objectives, technical means, and advantages of the embodiments of the present invention, the technical means in the embodiments of the present invention will be combined and described clearly and completely as follows. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0020] In the description of the present invention, the orientation or positional relationship indicated by terms such as "center", "lateral direction", "longitudinal direction", "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for facilitating the description of the present invention and simplifying the description. It does not indicate or imply that the device or element mentioned must have a specific orientation and be configured and operated in a specific orientation. Therefore, it should not be understood that the protection scope of the present invention is limited. When an assembly is referred to as "fixed to" another assembly, it may be directly fixed to another assembly or may be fixed to another assembly via an intermediate medium. When an assembly is considered to be "connected to" another assembly, it may be directly connected to another assembly or there may be an intermediate medium present at the same time. When an assembly is considered to be "provided on" another assembly, it may be directly installed on another assembly or there may be an intermediate medium present at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are only for the purpose of explanation.

[0021] Embodiment: As shown in FIGS. 1 to 10, the present invention discloses an embodiment of a floor brush for a vacuum cleaner. The floor brush for the vacuum cleaner includes a floor brush cover plate 100, a floor brush base 200 located on the floor brush base 200 and having a dust collection chamber 220, a rotating brush body 300 provided in the dust collection chamber 220 and having a rotating brush body chamber 320, a rotating brush strip assembly 340 provided on the rotating brush body 300, an end cover plate 400 provided at one end of the rotating brush body 300, a bearing cover plate 500 engaged with the end cover plate 510, a drive assembly 600 for driving the rotating brush body 300 to rotate, a bearing cover plate holder 700 connected to the bearing cover plate 500, and an adapter 800 movably connected to the floor brush base 200 and located downstream of the dust collection chamber 220.

[0022] The floor brush cover plate 100 is a rectangular plastic member. The bottom of the floor brush base 200 is in contact with the surface to be cleaned and can reciprocate. It is an injection molded part and includes a dust collection chamber 220 located at the front end, a dust collection port 224 communicating with the dust collection chamber 220 and located upstream of the adapter 800, and a comb tooth part 260 for combing hair on the rotating brush body 300 located at the rear end of the dust collection chamber 220. The floor brush cover plate 100 covers the rear end of the floor brush base. An adapter 800 is provided at the rear end of the floor brush base 200. The floor brush base 200 is located above the dust collection chamber 220 and is provided adjacent to the bearing cover plate 500, and includes a guide rib 240 for guiding hair to the middle part of the rotating brush body 300, whereby the hair moves in a direction away from the end cover. The middle part of the rotating brush body 300 is provided adjacent to the dust collection port 224.

[0023] The rotating brush body 300 rotates around a horizontal axis parallel to the surface to be cleaned, and a plurality of rotating brush body grooves for accommodating the rotating brush strip assembly 340 are provided in the circumferential direction on its surface. The rotating brush strip assembly 340 includes a plurality of first rotating brush strips 342 and a plurality of second rotating brush strips 344. The first rotating brush strip 342 is provided adjacent to the corresponding second rotating brush strip 344. Between two adjacent rotating brush body grooves, a first rotating brush strip 342 or a second rotating brush strip 344 is provided. Preferably, the first rotating brush strip 342 is a hair brush strip, and the second rotating brush strip 344 is a silicon rubber strip.

[0024] As shown in FIGS. 7 to 8, the end cover plate 400 includes an end cover base 420, an end cover hole 440 located on one side of the end cover base 420, and an end cover sleeve portion 460 extending along the axial direction from one end of the end cover base 420 and insertable into the rotating brush body chamber 320. The end cover base 420 includes an annular end cover base side edge 424, an end cover flange 426 located outside the end cover base side edge 424, and a plurality of end cover base protrusions 428 formed inside the end cover base side edge 424 and facing the end cover sleeve portion 460 in the radial direction. Inside the end cover sleeve portion 460, there are a sleeve chamber 464, a plurality of sleeve ribs 468 located on the outer surface and provided at intervals in the circumferential direction, and a shaft portion 480 located in the sleeve chamber 464 and having a central axis hole 484. The central axis hole 484 communicates with the end cover hole 440. The end cover base 420 has an axial gap with the bearing cover plate 500 in the axial direction of the rotating brush body 300, and there is a radial gap between the end cover flange 426 and the outer wall 560 of the bearing cover. The radial gap is smaller than the axial gap.

[0025] As shown in FIGS. 9 to 10, the bearing cover plate 500 includes a bearing cover recess 504, a bearing cover center hole 508 located at the center of the bearing cover recess 504, a bearing cover flange 510 provided so as to surround one end of the bearing cover center hole 508, a bearing chamber 514 communicating with the bearing cover center hole 508 and located within the bearing cover flange 510, a connecting shaft 520 penetrating through the bearing cover center hole 508 and the central shaft hole 484 in the axial direction, a bearing cover sleeve 530 provided so as to surround the other end of the bearing cover center hole 508, a bearing 540 fitted onto the connecting shaft 520 and housed in the bearing chamber 514, a bearing cover outer wall 560 located outside the bearing cover recess 504, and a recess edge 506 located outside the bearing cover recess 504. There is a first radial gap between the recess edge 506 and the bearing cover outer wall 560 for partially accommodating the rotary brush strip assembly 340. The bearing cover outer wall 560 includes a bearing cover outer wall base portion 564, a bearing cover outer wall top portion 566, a bearing cover outer wall inclined portion 568 extending from the bearing cover outer wall base portion 564 toward the bearing cover outer wall top portion 566, and a bearing cover inner wall 569 located inside the bearing cover outer wall inclined portion 568 and in contact with the rotary brush strip assembly 340. There is a second radial gap between the recess edge 506 and the bearing cover inner wall 569, and the second radial gap is smaller than the first radial gap. In this embodiment, the bearing cover plate 500 is the bearing cover plate at the non-driven end of the rotary brush body 300, and may also be the bearing cover plate at the driven end.

[0026] The drive assembly 600 is a DC motor for driving the rotary brush body 300 to rotate about an axis. The drive assembly 600 is located at the rear end of the floor brush base 200 and covered by the floor brush cover plate 100.

[0027] The bearing cover plate holder 700 has a holder hole that snap-fits with the bearing cover sleeve 530, and the bearing cover plate holder 700 is removably provided to facilitate the removal of the rotary brush body 300.

[0028] The adapter 800 is rotatable in the front-back, left-right directions with respect to the floor brush base 200, and is connected to a metal tube so as to convey the dust-containing air flow to the cleaner main body.

[0029] During operation, under the high-speed rotation of the drive assembly 600, the first rotating brush strip 342 and the second rotating brush strip 344 of the rotating brush body 300 rotate accordingly to strike the surface to be cleaned to generate a dust-containing air flow. The dust-containing air flow enters the dust collection chamber 220, enters the hose through the dust collection port 224 at the rear side of the dust collection chamber 220, and further flows in the direction of the cleaner main body through the adapter 800. Finally, it is filtered and discharged to the outside. There is an interference fit and a clearance fit in the radial direction between the first rotating brush strip 342 and the second rotating brush strip 344 and the inner wall of the bearing cover plate 500. Therefore, during the interference fit, the first rotating brush strip 342 and the second rotating brush strip 344 are compressed and deformed by the inner wall 569 of the bearing cover. During the clearance fit, the first rotating brush strip 342 and the second rotating brush strip 344 recover from the deformation. Especially, the second rotating brush strip 344 with better elasticity elastically separates the hair. Due to the continuous interference fit and clearance fit in the circumferential direction, during the process of continuous deformation and recovery of the deformation, it is easier to prevent the entanglement of the hair. Furthermore, by combing with the comb teeth part 260, the entanglement of the hair is similarly reduced.

[0030] The advantage of the present invention is that by having different radial fits between the rotating brush body and the bearing cover plate, it avoids the entanglement of hair on the rotating brush body, enables the hair to move in the direction away from the end cover, ensures the reliable rotation of the rotating brush body, and guarantees the reliability of the operation of the floor brush for the cleaner.

[0031] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited thereto. Those skilled in the art can make various deformations and improvements without departing from the creative idea of the present invention, and all of these belong to the protection scope of the present invention.

Claims

1. A floor brush base (200) having a dust collection chamber (220), a rotating brush body (300) provided in the dust collection chamber (220) and having a rotating brush body chamber (320), an end cover plate (400) provided at one end of the rotating brush body (300), a bearing cover plate (500) engaging with the end cover plate (510), and a drive assembly (600) for driving the rotating brush body (300) to rotate. The bearing cover plate (500) includes a bearing cover recess (504), a bearing cover center hole (508) located at the center of the bearing cover recess (504), a bearing cover flange (510) provided so as to surround one end of the bearing cover center hole (508), a bearing chamber (514) communicating with the bearing cover center hole (508) and located within the bearing cover flange (510), a bearing cover sleeve (530) provided so as to surround the other end of the bearing cover center hole (508), a bearing cover outer wall (560) located outside the bearing cover recess (504), and a recess edge (506) located outside the bearing cover recess (504). A floor brush for a vacuum cleaner, characterized in that there are an interference fit and a clearance fit that are continuous in the rotational direction between the rotating brush body (300) and the bearing cover plate (500).

2. The end cover plate (400) includes an end cover base (420), an end cover hole (440) located on one side of the end cover base (420), and an end cover sleeve portion (460) extending along the axial direction from one end of the end cover base (420) and insertable into the rotating brush body chamber (320). The floor brush for a vacuum cleaner according to Claim 1, characterized in that it includes the above.

3. Inside the end cover sleeve portion (460), there are a sleeve chamber (464), a plurality of sleeve ribs (468) located on the outer surface and provided at intervals in the circumferential direction, and a shaft-like portion (480) located in the sleeve chamber (464) and having a central axis hole (484). The central axis hole (484) communicates with the end cover hole (440). The floor brush for a vacuum cleaner according to Claim 2, characterized in that it has the above.

4. The end cover base (420) has an axial gap with the bearing cover plate (500) in the axial direction of the rotary brush body (300), and has a radial gap between the end cover flange (426) and the outer wall (560) of the bearing cover. The radial gap is smaller than the axial gap. The floor brush for a vacuum cleaner according to claim 3, characterized in that.

5. A floor brush cover plate (100) located on the floor brush base (200), an adapter (800) movably connected to the floor brush base (200) and located downstream of the dust collection chamber (220), and a rotary brush strip assembly (340) provided on the rotary brush body (300). The rotary brush strip assembly (340) includes a plurality of first rotary brush strips (342) and a plurality of second rotary brush strips (344). The first rotary brush strip (342) is provided adjacent to the corresponding second rotary brush strip (344). The floor brush for a vacuum cleaner according to claim 1, 2, 3 or 4, characterized in that.

6. A plurality of rotary brush body grooves (340) for accommodating the corresponding engaging arms (538) are provided in the circumferential direction on the rotary brush body (300). A first rotary brush strip (342) or a second rotary brush strip (344) is provided between two adjacent rotary brush body grooves. The floor brush for a vacuum cleaner according to claim 5, characterized in that.

7. There is a first radial gap for partially accommodating the rotary brush strip assembly (340) between the recess edge (506) and the outer wall (560) of the bearing cover. The floor brush for a vacuum cleaner according to claim 5, characterized in that.

8. The outer wall (560) of the bearing cover includes a root portion (564) of the outer wall of the bearing cover, a top portion (566) of the outer wall of the bearing cover, a sloping portion (568) of the outer wall of the bearing cover extending from the root portion (564) of the outer wall of the bearing cover to the top portion (566) of the outer wall of the bearing cover, and an inner wall (569) of the bearing cover located inside the sloping portion (568) of the outer wall of the bearing cover and contacting the rotary brush strip assembly (340). There is a second radial gap between the recess edge (506) and the inner wall (569) of the bearing cover. The second radial gap is smaller than the first radial gap. The floor brush for a vacuum cleaner according to claim 7, characterized in that.

9. The first rotary brush strip (342) is a hair brush strip, the second rotary brush strip (344) is a silicon rubber strip, and a radial distance between an end of the second rotary brush strip (344) and a center of the rotary brush body (300) is larger than a radial distance between an end of the first rotary brush strip (342) and the center of the rotary brush body (300). The floor brush for a vacuum cleaner according to claim 8, characterized in that.

10. The floor brush base (200) is located above the dust collection chamber (220), is provided adjacent to the bearing cover plate (500), and includes a guide rib (240) for guiding hair to an intermediate portion of the rotary brush body (300). The floor brush for a vacuum cleaner according to claim 5, characterized in that.

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