Anti-winding floor brush of dust collector

Abstract

A first rolling brush is rotatably arranged on a machine shell, one end of the first rolling brush is provided with a first meshing part, a second rolling brush is rotatably arranged on the machine shell and located on the opposite side of the first rolling brush, a gap is formed between the second rolling brush and the first rolling brush, a first thread is arranged in an accommodating cavity of the second rolling brush, and a second thread is arranged in an accommodating cavity of the second rolling brush. The telescopic mechanism comprises a center shaft, a damping sleeve and a telescopic sleeve, the center shaft is fixed to the machine shell, one end of the center shaft extends into the containing cavity and is connected with the damping sleeve, a second thread is arranged on the telescopic sleeve, a second meshing part is arranged at one end of the telescopic sleeve, and the telescopic sleeve is connected into the containing cavity in a threaded mode and abuts against at least part of the damping sleeve in an interference mode. The gap is formed between the first rolling brush and the second rolling brush, the telescopic sleeve capable of moving horizontally is arranged in the second rolling brush, after the telescopic sleeve penetrates through the gap, the second rolling brush and the first rolling brush are connected to achieve synchronous rotation to complete the cleaning action, and after the telescopic sleeve retracts, hair wound on the rolling brushes can be conveniently cleaned through the open gap.

Description

Technical Field

[0001] This utility model relates to the technical field of vacuum cleaner devices, and in particular to an anti-tangling floor brush for vacuum cleaners. Background Technology

[0002] Vacuum cleaners use their roller brushes to clean floors and other surfaces. As the roller brush rotates in contact with the floor, it sweeps up dust and other impurities, which are then sucked up by the main unit of the vacuum cleaner to complete the cleaning process. However, impurities on the floor are not limited to dust; they also include hair. Hair that gets tangled on the roller brush is not easily sucked up by the main unit of the vacuum cleaner, which not only affects the cleaning action of the roller brush but also makes it difficult to remove the hair from the roller brush.

[0003] Therefore, preventing hair tangling on the roller brush has always been a pain point for vacuum cleaners. In existing technology, to achieve the effect of preventing hair tangling, a dual-motor design can be used to drive the roller brushes on both sides separately, with gaps between the roller brushes to facilitate hair removal. However, the dual-motor drive solution is very expensive, and the motors on both sides occupy a lot of space, sacrificing a significant portion of performance and resulting in poor edge-hugging effect. Utility Model Content

[0004] The purpose of this utility model is to provide a vacuum cleaner anti-tangling floor brush, which has a gap between the first roller brush and the second roller brush. A telescopic sleeve that can be moved horizontally is provided inside the second roller brush. When the telescopic sleeve passes through the gap, it connects the second roller brush with the first roller brush to achieve synchronous rotation and complete the cleaning action. When the telescopic sleeve retracts, it can be easily cleaned of hair tangled on the roller brush through the open gap.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a vacuum cleaner anti-tangling floor brush, comprising a housing, and:

[0006] The first roller brush is rotatably mounted on the housing, and one end of the roller brush has a first engagement part.

[0007] The second roller brush is rotatably mounted on the housing and located on the opposite side of the first roller brush, with a gap between them. The second roller brush has a receiving cavity, and the receiving cavity has a first thread.

[0008] A drive mechanism, which is mounted on the housing and connected to the second roller brush,

[0009] A telescopic mechanism includes a central shaft, a damping sleeve, and a telescopic sleeve. The central shaft is fixed to the housing and one end extends into the receiving cavity and is connected to the damping sleeve. The telescopic sleeve has a second thread and one end has a second engagement portion. The telescopic sleeve is screwed into the receiving cavity and at least partially presses against the damping sleeve. It is driven to extend or retract into the receiving cavity so that the second engagement portion abuts against or separates from the first engagement portion.

[0010] As a further optimization, the telescopic sleeve has a central cavity, and the damping sleeve at least partially abuts against the side wall of the central cavity.

[0011] As a further optimization, the telescopic sleeve includes an action end and a sealing plate. The second thread and the second engagement part are both formed on the action end. The action end has a central cavity formed inside. The sealing plate is disposed on the side of the action end away from the second engagement part and has a through hole communicating with the central cavity. The central shaft passes through the through hole and extends into the central cavity.

[0012] As a further optimization, a positioning ring is provided on the central shaft to prevent the damping sleeve from moving, which can ensure the stability of the damping sleeve when it interacts with the telescopic sleeve.

[0013] As a further optimization, the first roller brush includes a central rod, a first bearing, and a first brush body. The central rod is fixed to the housing, and the first brush body is mounted on the central rod via the first bearing.

[0014] As a further optimization, the second roller brush includes a housing and a second brush body. The housing is rotatably disposed inside the inner shell of the housing via a second bearing and is connected to the drive mechanism. One side of the second brush body is sleeved on the housing and fixedly connected. The first thread is formed on the side of the second brush body away from the housing.

[0015] As a further optimization, a limiting element is provided on the end of the second roller brush located at the first thread.

[0016] As a further optimization, a third bearing is provided on the central shaft, and the end of the sleeve is fitted onto the third bearing.

[0017] As a further optimization, the first and second biting parts are matched tooth ring structures, which facilitates their synchronous rotation.

[0018] As a further optimization, the damping sleeve includes a central body and fins. The central body is disposed on the central axis, and a plurality of fins are disposed on the sidewall of the central body. At least the fins have an elastic interference fit with the telescopic sleeve.

[0019] As a further optimization, the damping sleeve includes a central body and a covering layer. The central body is disposed on the central axis, and the covering layer is wrapped around the side wall of the central body. The covering layer has an elastic interference fit with the telescopic sleeve.

[0020] Compared with the prior art, the present invention has the following advantages: there is a gap between the first roller brush and the second roller brush, and a telescopic sleeve that can be moved horizontally is provided inside the second roller brush. When the telescopic sleeve passes through the gap, it connects the second roller brush with the first roller brush to achieve synchronous rotation and complete the cleaning action. When the telescopic sleeve retracts, the open gap makes it easy to clean the hair wrapped around the roller brush. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the present invention.

[0022] Figure 2 This is a cross-sectional view of the present invention.

[0023] Figure 3 This is a structural diagram of the present invention after the casing has been removed.

[0024] Figure 4 This is an exploded view of the first roller brush, the second roller brush, and the telescopic mechanism of this utility model.

[0025] Figure 5 This is a structural diagram of the casing of this utility model.

[0026] Figure 6 This is a structural diagram of the connection between the second brush body and the casing of this utility model.

[0027] Figure 7 This is a structural diagram of the telescopic sleeve of this utility model.

[0028] Figure 8 This is a structural diagram of one embodiment of the damping sleeve of this utility model.

[0029] Figure 9 This is a structural diagram of another embodiment of the damping sleeve of this utility model.

[0030] Figure 10 This is a structural diagram of another embodiment of the damping sleeve of this utility model. Detailed Implementation

[0031] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0032] like Figures 1 to 4As shown, a vacuum cleaner anti-tangling floor brush includes a housing 10, a first roller brush 20, a second roller brush 30, a drive mechanism 40, and a telescopic mechanism 50. The first roller brush 20 is rotatably disposed within the bottom chamber 100 of the housing 10, and one end of it is provided with a first engagement portion 200, preferably a toothed ring structure. The second roller brush 30 is rotatably disposed within the bottom chamber 100 and located on the opposite side of the first roller brush 20, with a gap 20a between them. The second roller brush 30 is provided with a receiving cavity 300, and a first thread 301 is provided within the receiving cavity 300. The drive mechanism 40 is disposed on the housing 10, and its drive form is a combination of a motor 41, a drive gear 42, and a transmission belt 43. The motor 41 can achieve forward and reverse rotation, and the transmission belt 43 drives the second roller brush 30. The telescopic mechanism 50 is connected to the central shaft 41, the damping sleeve 52, and the telescopic sleeve 53. The central shaft 51 is fixed to the housing 10, and one end extends into the receiving cavity 300. The damping sleeve 52 is connected to the end of the central shaft 41. One side of the telescopic sleeve 53 is sleeved on the central shaft 41. The outer wall of the telescopic sleeve 53 is provided with a second thread 501, and one end is provided with a second engagement part 500. Preferably, the second engagement part 500 is a toothed ring structure that can match the first engagement part 200. The second thread 501 on the telescopic sleeve 53 is screwed onto the first thread 301 in the receiving cavity 300. The telescopic sleeve and the damping sleeve 52 are at least partially pressed together to form a certain frictional resistance. The telescopic sleeve 53 is driven to extend or retract into the receiving cavity 300 so that the second engagement part 500 abuts against or separates from the first engagement part 200.

[0033] In this utility model, in the first state, the first roller brush 20 and the second roller brush 30 are in a linked state, that is, the second engaging part 500 of the telescopic sleeve 53 extends out of the receiving cavity 300 (the second roller brush 30) and passes through the gap 20a. The first roller brush 20 engages with the second engaging part 500 on the telescopic sleeve 53 through its first engaging part 200. At this time, the second thread 501 on the telescopic sleeve 53 is located on the side of the first thread 301 near the first roller brush 200 and is limited and cannot disengage from the end of the first thread 501. In this state (e.g. Figure 2As shown), when the motor 41 rotates forward, driving the first roller brush 300 to rotate in one direction, the second thread 501 is at the end of the first thread 301 and is limited. Therefore, the second roller brush 300 drives the telescopic sleeve 53 to rotate after overcoming the rotational friction between the telescopic sleeve 53 and the damping sleeve 52, thereby driving the first engagement part 200, which engages with the second engagement part 500 of the telescopic sleeve 53, to rotate. That is, it drives the first roller brush 200 to rotate synchronously. The overall rotation of the two roller brushes can clean the ground, etc. After completing the first state described above, To facilitate the removal of hair entangled on the first roller brush 200 and / or the second roller brush 300, the motor 41 is reversed, causing the first roller brush 300 to rotate in the opposite direction. With the second roller brush 300 changing its rotation direction while maintaining its lateral position, the spiral rotation of the first thread 301 and the second thread 501 (the screw position changes, and the second thread 501 moves towards the side of the first thread 301 away from the first roller brush 200) causes the telescopic sleeve 53 to translate. Therefore, the second engaging part 500 engages with the first engaging part. After the separation of part 200, an open gap 2a is formed, creating the second state. It is important to note that during this process, the rotational friction between the first thread 301 and the second thread 501 needs to be less than the rotational friction between the telescopic sleeve 53 and the damping sleeve 52. This prevents the telescopic sleeve 53 from failing to translate after rotation due to insufficient friction between the telescopic sleeve 53 and the damping sleeve 52. The open gap 2a facilitates the removal of hair from the first roller brush 200 and / or the second roller brush 300. Regarding the transition to the second state... In the first state, the motor 41 can be rotated forward, and the second roller brush 300 can rotate in one direction. Since the second thread 501 is engaged with the first thread 301 on the side away from the first roller brush 200, and since the rotational friction between the first thread 301 and the second thread 501 is less than the rotational friction between the telescopic sleeve 53 and the damping sleeve 52, the second thread 501 moves spirally towards the side of the first thread 301 closer to the first roller brush 200, so that the telescopic sleeve 53 is translated towards the side of the second roller brush 200 to achieve the first state.

[0034] This utility model provides a gap 2a between the first roller brush 20 and the second roller brush 30, and provides a movable telescopic sleeve 53 inside the second roller brush 30. When the telescopic sleeve 53 passes through the gap 2a and connects the second roller brush 30 with the first roller brush 20, the cleaning action is achieved by the synchronous rotation of the roller brush. When the telescopic sleeve 53 retracts, the open gap 20a facilitates the cleaning of hair wrapped around the roller brush.

[0035] Combination Figures 5 to 7 As shown, the telescopic sleeve 53 has a central cavity 530, and the damping sleeve 52 extends into the central cavity 530 and is press-fitted against the side wall of the central cavity 530, thereby forming a stable connection between the telescopic sleeve 53 and the damping sleeve 52. The wrapping connection can better ensure the interaction force between the two.

[0036] Specifically, the telescopic sleeve 53 includes an action end 531 and a sealing plate 532. The second thread 501 and the second engagement part 500 are both formed on the action end 531. A central cavity 530 is formed in the action end 531. The sealing plate 532 is disposed on the side of the action end 531 away from the second engagement part 500, and has a through hole 5320 communicating with the central cavity 530. The central shaft 51 passes through the through hole 5320 and extends into the central cavity 530. That is, one end of the central shaft 51 passes through the through hole 5320 of the sealing plate 532 and is connected to the damping sleeve 52. The damping sleeve 52 is embedded in the action end 531, and then the sealing plate 532 is fixedly connected to the action end 531.

[0037] A positioning ring (not shown) is provided on the central shaft 51 to prevent the damping sleeve 52 from moving, so as to ensure the positional stability of the damping sleeve 52. The sealing plate 532 mentioned above can also serve as a positioning device for the damping sleeve 52.

[0038] The structure of the first roller brush 20 includes a central rod 21, a first bearing 22 and a first brush body 23. The central rod 21 is fixed on the housing 10, the first brush body 23 is mounted on the central rod 21 through the first bearing 22, and the first engagement part 200 is formed on the first brush body 23.

[0039] The structure of the second roller brush 30 includes a housing 31 and a second brush body 32. One side of the housing 31 is rotatably mounted inside the inner shell 11 of the housing 10 via a second bearing 110, and the other side is rotatably mounted on the central shaft 51 via a third bearing 310. The housing 31 is connected to the transmission belt 43 of the drive mechanism 40 via a toothed ring structure 311 at its end. One side of the second brush body 32 is fitted onto the housing 31 and fixedly connected, for example, by a snap fastener 32a on the second brush body 32 and a snap fastener 31a on the first brush body 31. A first thread 301 is formed inside the second brush body 32 on the side away from the housing 31. This modular design of the second roller brush 30 facilitates the assembly of the second roller brush 30 with the components of the telescopic mechanism 50.

[0040] The end limiting member 321, such as a limiting block, located on the second roller brush 30 (second brush body 32) at the first thread 301 can limit the length of the telescopic sleeve 53 extending out of the second roller brush 30 by restricting the movement of the second thread 501.

[0041] For the structure of damping sleeve 52, such as Figure 8 As shown, in one embodiment, the damping sleeve 52 includes a first central body 521 and first fins 522. The central body 521 is disposed on a central shaft 51, and a plurality of first fins 522 are disposed on the sidewalls of the central body 521, and at least the first fins 522 have an elasticity that allows them to press against the telescopic sleeve 53; Figure 9As shown, in another embodiment, although the structure of the second central body 521′ and the second wing 522′ differs from that described above, the second wing 522′ still elastically fits into the telescopic sleeve 53 with an interference fit. Figure 10 As shown, in another embodiment, the damping sleeve 52 includes a third central body 523 and a covering layer 524. The third central body 523 is disposed on the central shaft 51, and the covering layer 524 is wrapped around the side wall of the third central body 523. The covering layer 524 has an elasticity that makes an interference fit with the telescopic sleeve 53. It is preferable to use this form of damping sleeve 52, as the covering layer 524 can have a larger contact area with the telescopic sleeve 53, the telescopic sleeve 53 can be more stable, and this form is simpler to process.

[0042] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A dust cleaner anti-entangling floor brush comprising a housing, characterized in that, Also includes: The first roller brush is rotatably mounted on the housing, and one end of the roller brush has a first engagement part. The second roller brush is rotatably mounted on the housing and located on the opposite side of the first roller brush, with a gap between them. The second roller brush has a receiving cavity, and the receiving cavity has a first thread. A drive mechanism, which is mounted on the housing and connected to the second roller brush, A telescopic mechanism includes a central shaft, a damping sleeve, and a telescopic sleeve. The central shaft is fixed to the housing and one end extends into the receiving cavity and is connected to the damping sleeve. The telescopic sleeve has a second thread and one end has a second engagement portion. The telescopic sleeve is screwed into the receiving cavity and at least partially presses against the damping sleeve. It is driven to extend or retract into the receiving cavity so that the second engagement portion abuts against or separates from the first engagement portion.

2. The dust cup of claim 1, wherein, The telescopic sleeve has a central cavity, and the damping sleeve at least partially abuts against the side wall of the central cavity.

3. The anti-tangling floor brush for a vacuum cleaner according to claim 2, characterized in that, The telescopic sleeve includes an active end and a sealing plate. The second thread and the second engagement portion are both formed on the active end. The active end has a central cavity formed inside. The sealing plate is disposed on the active end away from the second engagement portion and has a through hole communicating with the central cavity. The central shaft passes through the through hole and extends into the central cavity.

4. The anti-tangling floor brush for a vacuum cleaner according to claim 3, characterized in that, The central shaft is equipped with a positioning ring to prevent the damping sleeve from moving.

5. The anti-tangling floor brush for a vacuum cleaner according to claim 1, characterized in that, The first roller brush includes a central rod, a first bearing, and a first brush body. The central rod is fixed to the housing, and the first brush body is mounted on the central rod via the first bearing.

6. The anti-tangling floor brush for a vacuum cleaner according to claim 1 or 5, characterized in that, The second roller brush includes a housing and a second brush body. The housing is rotatably disposed inside the inner shell of the housing via a second bearing and is connected to the drive mechanism. One side of the second brush body is fitted onto the housing and fixedly connected. The first thread is formed on the side of the second brush body away from the housing.

7. The anti-tangling floor brush for a vacuum cleaner according to claim 6, characterized in that, The second roller brush has a limiting member at the end of the first thread.

8. The anti-tangling floor brush for a vacuum cleaner according to claim 1, characterized in that, The first and second occlusal portions are matched tooth ring structures.

9. The anti-tangling floor brush for a vacuum cleaner according to claim 1, characterized in that, The damping sleeve includes a central body and wings. The central body is disposed on the central axis, and a plurality of wings are disposed on the side wall of the central body. At least the wings have an elastic interference fit with the telescopic sleeve.

10. The anti-tangling floor brush for a vacuum cleaner according to claim 1, characterized in that, The damping sleeve includes a central body and a covering layer. The central body is disposed on the central axis, and the covering layer is wrapped around the side wall of the central body. The covering layer has an elasticity and interference fit with the telescopic sleeve.

Images