Sweeper and side brush device thereof

Abstract

The utility model provides a side brush device, which comprises a motor component, a brush component, a brush component and a brush component, the motor component comprises a shell and a driving motor arranged in the shell, and the bottom surface of the shell is provided with an output end opening; the side brush assembly is assembled to the output end opening through the transmission assembly; the side brush assembly comprises a side brush shell and a transmission assembly, the side brush shell is provided with a first center shaft extending in the vertical direction, and the transmission assembly is assembled to the side brush shell in the direction of the first center shaft so that a driving motor can drive the transmission assembly to rotate around the first center shaft relative to the side brush shell; the multiple side brush claws are assembled to the circumferential outer wall of the side brush shell at equal angles at intervals, and each side brush claw has the freedom degree of rotating around a second center shaft extending in the radial direction of the side brush shell so that the side brush claw can have the sweeping posture that the end of the side brush claw makes contact with the ground and the retracting posture parallel to the ground; the side brush claw is connected with the driving motor through the transmission assembly so as to respond to the rotating direction of the driving motor to be switched between the cleaning posture and the folding posture.

Description

Technical Field

[0001] The utility model relates to the field of sweeping machines, in particular to a sweeping machine and a side brush device thereof. Background Art

[0002] In existing sweepers, in order to retract the side brush claws, the pre-compression angle of the bristles is often sacrificed, resulting in a smaller angle of the bristles and reduced cleaning efficiency. In addition, since the side brush claws are retracted by utilizing the elastic deformation of the soft rubber, the soft rubber claws are always in a compressed deformation state, which will deform over time and result in poor deformation effects. Furthermore, since the side brush claws require space to retract, the opening of the side brush housing is larger than the volume of the side brush claws themselves, which can easily cause garbage to enter the housing, resulting in jamming later. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a sweeper and a side brush device thereof, wherein the side brush claws rotate and switch between a sweeping posture and a stowed posture according to the rotation direction of a driving motor to facilitate obstacle crossing and keep the floor clean.

[0004] In one embodiment of the present invention, a side brush device is provided, comprising:

[0005] A motor assembly, the motor assembly comprising a housing and a driving motor installed in the housing, wherein the bottom surface of the housing has an output end opening;

[0006] A side brush assembly, the side brush assembly being assembled to the output end opening via a transmission assembly;

[0007] Wherein, the side brush assembly comprises:

[0008] A side brush housing, wherein the side brush housing has a first central axis extending in a vertical direction, and the transmission assembly is assembled to the side brush housing along the direction of the first central axis, so that the drive motor drives the transmission assembly to rotate relative to the side brush housing around the first central axis;

[0009] A plurality of side brush claws are mounted to the circumferential outer wall of the side brush housing at equal angles, each side brush claw having a degree of freedom to rotate about a second central axis extending in the radial direction of the side brush housing so as to have a cleaning posture with an end portion contacting the ground, and a retracted posture out of contact with the ground;

[0010] The side brush claw is connected to the drive motor via the transmission assembly to switch between the cleaning posture and the stowed posture in response to the rotation direction of the drive motor.

[0011] In one embodiment, the side brush claw comprises:

[0012] A support portion, the support portion comprising a first support arm extending along the radial direction and a second support arm connected to the first support arm and forming an obtuse angle, the first support arm being assembled to the side brush housing;

[0013] Bristles are mounted to the end of the second arm.

[0014] In one embodiment, the first support arm includes a first engaging portion engaged with the transmission assembly, and the arc angle of the first engaging portion ranges from 75° to 120°.

[0015] In one embodiment, the transmission assembly comprises:

[0016] A first transmission assembly, the first transmission assembly comprising an output gear shaft, the output gear shaft outputs the torque of the motor assembly, the output gear shaft is assembled to the position of the first central axis of the side brush housing to drive the side brush housing to rotate synchronously;

[0017] a second transmission assembly, wherein the second transmission assembly is coaxially sleeved on the first transmission assembly, the second transmission assembly is driven by the first transmission assembly to rotate around the first central axis, and has a rotational freedom relative to the first transmission assembly;

[0018] The second transmission assembly is configured to be rotatable in a first direction, the first transmission assembly is configured to be rotatable in opposite first and second directions, and the side brush claw is driven to rotate by the second transmission assembly.

[0019] In one embodiment, the first transmission assembly comprises:

[0020] A central column extends from the inner wall of the side brush housing along the direction of the first central axis, and the output gear shaft is fixed to the central column.

[0021] In one embodiment, the second transmission assembly comprises:

[0022] A one-way link bracket, the one-way link bracket is coaxially sleeved on the first transmission assembly and has a rotational freedom relative to the first transmission assembly;

[0023] A one-way bearing is fixed to the output end opening and cooperates with the peripheral wall of the one-way link bracket via a one-way fixing bracket. The one-way bearing rotates synchronously with the one-way link bracket to limit the one-way link bracket to be rotatable in a first direction.

[0024] In one embodiment, it includes:

[0025] A torsion spring is connected between the side brush housing and the one-way link bracket.

[0026] In one embodiment, when the second transmission assembly and the output gear shaft rotate in the same direction, the side brush claw switches from the stowed position to the cleaning position in response to the rotation of the output gear shaft;

[0027] When the second transmission assembly and the output gear shaft rotate in opposite directions, the side brush claw switches from the cleaning posture to the retracted posture in response to the rotation of the output gear shaft.

[0028] In one embodiment, the inner wall of the side brush housing and / or the one-way link bracket further have a limiting portion that limits the side brush claw to the cleaning posture and the retracted posture respectively.

[0029] Another embodiment of the utility model further provides a sweeping machine, comprising the side brush device as described above.

[0030] It can be seen from the above technical solution that this embodiment provides a sweeper and a side brush device thereof, wherein the side brush claws rotate and switch between a sweeping posture and a retracted posture according to the rotation direction of the drive motor to facilitate obstacle crossing and keep the floor clean.

[0031] In this embodiment, the side brush claw 22 is not retracted by moving up in the vertical direction and being stored in the side brush housing, but by rotating it to a retracted posture parallel to the ground and spaced from the ground, thereby achieving the effect of crossing obstacles and leaving the ground. As a result, the side brush claw only rotates but is not compressed or stored, so elastic deformation and compression will not occur, and the performance and life of the brush will not be affected by the retraction of the side brush claw. And because the side brush claw is not stored inside the housing, there will be no problem of garbage being brought into the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The following drawings are only used to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0033] Figure 1 It is a structural schematic diagram of the side brush device of the utility model.

[0034] Figure 2 It is an exploded schematic diagram of the side brush device of the utility model.

[0035] Figure 3a and Figure 3b It is a schematic diagram of the working position of the side brush device of the utility model.

[0036] Figure 4 It is a cross-sectional view of the side brush device of the present utility model.

[0037] Figure 5a and Figure 5b It is a structural schematic diagram of the limiting part of the side brush device of the utility model. DETAILED DESCRIPTION

[0038] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation of the utility model is now described with reference to the accompanying drawings, in which the same reference numerals represent the same parts.

[0039] In this document, “exemplary” means “serving as an example, instance or illustration”, and any diagram or implementation described in this document as “exemplary” should not be interpreted as a more preferred or more advantageous technical solution.

[0040] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked.

[0041] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0042] In this article, "first", "second", etc. are only used to distinguish each other, and do not indicate the importance and order, or the premise of each other's existence.

[0043] In this article, "equal", "same" and the like are not strictly limited in the mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use. Unless otherwise specified, the numerical ranges herein include not only the entire range within its two endpoints, but also several sub-ranges contained therein.

[0044] Example embodiments will now be described more fully with reference to the accompanying drawings.

[0045] like Figures 1 to 5b As shown, one embodiment of the utility model provides a side brush device, comprising:

[0046] The motor assembly 1 comprises a housing 11 and a driving motor 12 installed in the housing 11. The bottom surface of the housing 11 has an output end opening 13;

[0047] The side brush assembly 2 is assembled to the output end opening 13 via the transmission assembly 3;

[0048] Wherein, the side brush assembly 2 comprises:

[0049] The side brush housing 21 has a first central axis L1 extending in a vertical direction, and the transmission assembly 3 is assembled to the side brush housing 21 along the direction of the first central axis L1, so that the drive motor 12 drives the transmission assembly 3 to rotate relative to the side brush housing 21 around the first central axis L1;

[0050] A side brush claw 22, a plurality of side brush claws 22 are mounted to the circumferential outer wall of the side brush housing 21 at equal angle intervals, each side brush claw 22 having a degree of freedom to rotate about a second central axis L2 extending in the radial direction of the side brush housing 21, so as to have a cleaning posture extending in a vertical plane with an end contacting the ground, and a stowed posture extending in a horizontal plane in parallel with the ground;

[0051] The side brush claw 22 is connected to the drive motor 12 via the transmission assembly 3 to switch between a cleaning posture and a stowed posture in response to the rotation direction of the drive motor 12 .

[0052] In this embodiment, the side brush claw 22 is not retracted by moving up in the vertical direction and being stored in the side brush housing, but by rotating it to a retracted posture parallel to the ground and spaced from the ground, thereby achieving the effect of crossing obstacles and leaving the ground. As a result, the side brush claw only rotates but is not compressed or stored, so elastic deformation and compression will not occur, and the performance and life of the brush will not be affected by the retraction of the side brush claw. And because the side brush claw is not stored inside the housing, there will be no problem of garbage being brought into the housing.

[0053] Wherein, the side brush claw 22 comprises:

[0054] A support portion 221, the support portion 221 includes a first arm 221a extending in a radial direction and a second arm 221b connected to the first arm 221a and forming an obtuse angle, the first arm 221a being assembled to the side brush housing 21;

[0055] Brush bristles 222 are mounted to the end of the second arm 221b.

[0056] The first arm 221 a extends along the second central axis L2 and is assembled to the side brush housing 21 . The rotation of the side brush claw 22 is a rotation around the first arm 221 a as a fulcrum to adjust the extension direction of the bristles 222 .

[0057] Among them, the second arm 221b and the bristles 222 have the same extension direction, and the second arm 221b forms an obtuse angle with the first arm 221a. When the side brush claw 22 rotates around the second center axis L2 with the first arm 221a as the fulcrum, it can have a cleaning posture in which the second arm 221b extends in the vertical plane, and a folded posture in which the second arm 221b extends in the horizontal plane.

[0058] When in the cleaning posture, the second arm 221b extends in a vertical plane. Since the second arm 221b forms an obtuse angle with the first arm 221a, the bristles 222 are in contact with the ground and form an angle with the ground to achieve cleaning of the ground. When in the retracted posture, the second arm 221b extends in a horizontal plane, and the bristles 222 are parallel to the ground and spaced from the ground, so as to be separated from the ground, so as to achieve retraction and obstacle crossing.

[0059] In one embodiment, the first arm 221a includes a first meshing portion 223 meshing with the transmission assembly 3, and the arc angle of the first meshing portion 223 ranges from 75° to 120°, and in a preferred example, is 90°.

[0060] The transmission assembly 3 drives the side brush claw 22 to rotate through the first meshing portion 223 , and the position of the side brush claw 22 is controlled by the setting position of the first meshing portion 223 and the value range of the arc angle.

[0061] For example, in a preferred example, the cleaning posture and the retracted posture may differ by 90°, and the arc angle of the first meshing portion 223 may be set to 90°. The two end points of the first meshing portion 223 correspond to the cleaning posture and the retracted posture, respectively. Optionally, the rotation directions of the plurality of side brush claws 22 are the same, that is, when the side brush claws 22 switch from the cleaning posture to the retracted posture, they may all rotate in a clockwise direction or in a counterclockwise direction to achieve the same direction arrangement of the side brush claws.

[0062] Specifically, the transmission assembly 3 includes:

[0063] A first transmission assembly, the first transmission assembly includes an output gear shaft 31, the output gear shaft 31 outputs the torque of the motor assembly 1, and the output gear shaft 31 is assembled to the position of the first central axis L1 of the side brush housing 21 to drive the side brush housing 21 to rotate synchronously;

[0064] A second transmission assembly, the second transmission assembly is coaxially sleeved on the first transmission assembly, the second transmission assembly is driven by the first transmission assembly to rotate around the first central axis L1, and has a rotational freedom relative to the first transmission assembly;

[0065] The second transmission assembly is configured to be rotatable in a first direction, the first transmission assembly is configured to be rotatable in opposite first and second directions, and the side brush claw 22 is driven to rotate by the second transmission assembly.

[0066] Wherein, the first transmission assembly comprises:

[0067] The central column 211 extends from the inner wall of the side brush housing 21 along the direction of the first central axis L1 , and the output gear shaft 31 is fixed to the central column 211 .

[0068] In one embodiment, the second transmission assembly comprises:

[0069] A one-way link bracket 32, which is coaxially sleeved on the first transmission assembly and has a rotational freedom relative to the first transmission assembly;

[0070] The one-way bearing 33 is fixed to the output end opening 13 and cooperates with the peripheral wall of the one-way link bracket 32 ​​via the one-way fixing bracket 34. The one-way bearing 33 rotates synchronously with the one-way link bracket 32 ​​to limit the one-way link bracket 32 ​​to be rotatable in the first direction.

[0071] Further, including:

[0072] The torsion spring 35 is connected between the side brush housing 21 and the one-way link bracket 32 ​​.

[0073] The second transmission assembly includes a side brush one-way link bracket and a side brush one-way drive bracket, which are fixed by hexagonal edges, and there is no relative movement between the two parts. The first transmission assembly includes a gear shaft and a side brush lower shell, which are also fixed by hexagonal columns, and there is no relative movement between the two parts. The first transmission assembly and the second transmission assembly can move relative to each other. The second transmission assembly is assembled on a one-way bearing, and the one-way bearing allows the second transmission assembly to rotate only in the forward direction and not in the reverse direction.

[0074] When the gear shaft drives the side brush lower shell to rotate in the opposite direction, because the side brush one-way link bracket is fixed by the one-way bearing, the side brush shell rotates to overcome the torsion spring force and drives the helical gear on the claw to rise under the drive of the helical gear on the side brush one-way link bracket. After rising, the motor stops rotating because the rotation of the gear box requires a certain torque, and the spring torque cannot overcome the torque of the side brush gear box, so the side brush claw remains in the raised state.

[0075] The gearbox forward transmission spring torque is also released, and the gearbox reverses to overcome the torsion spring torque and do work. When the gearbox rotates forward, the gear shaft drives the side brush housing to rotate forward, and the side brush one-way link bracket drives the three claws down under the action of the forward rotation force and the torsion spring release force.

[0076] Wherein, when the second transmission assembly and the output gear shaft 31 rotate in the same direction, the side brush claw 22 switches from the stowed posture to the cleaning posture in response to the rotation of the output gear shaft 31;

[0077] When the second transmission assembly and the output gear shaft 31 rotate in opposite directions, the side brush claw 22 switches from the cleaning posture to the retracted posture in response to the rotation of the output gear shaft 31 .

[0078] Optionally, the inner wall of the side brush housing 21 and / or the one-way link bracket 32 ​​has a limiting portion 224 that limits the side brush claw 22 to the cleaning posture and the retracted posture respectively.

[0079] This embodiment also provides a sweeping machine, comprising the side brush device as described above.

[0080] It can be seen from the above technical solution that this embodiment provides a sweeper and a side brush device thereof, wherein the side brush claws rotate and switch between a sweeping posture and a retracted posture according to the rotation direction of the drive motor to facilitate obstacle crossing and keep the floor clean.

[0081] In this embodiment, the side brush claw 22 is not retracted by moving up in the vertical direction and being stored in the side brush housing, but by rotating it to a retracted posture parallel to the ground and spaced from the ground, thereby achieving the effect of crossing obstacles and leaving the ground. As a result, the side brush claw only rotates but is not compressed or stored, so elastic deformation and compression will not occur, and the performance and life of the brush will not be affected by the retraction of the side brush claw. And because the side brush claw is not stored inside the housing, there will be no problem of garbage being brought into the housing.

[0082] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model, and are not intended to limit the scope of protection of the utility model. Any equivalent implementation plans or changes that do not deviate from the technical spirit of the utility model, such as combination, division or repetition of features, should be included in the scope of protection of the utility model.

Claims

1. A side brush device, characterized in that: include: A motor assembly (1), the motor assembly (1) comprising a housing (11) and a drive motor (12) installed in the housing (11), the bottom surface of the housing (11) having an output end opening (13); A side brush assembly (2), the side brush assembly (2) being assembled to the output end opening (13) via a transmission assembly (3); Wherein, the side brush assembly (2) comprises: A side brush housing (21), the side brush housing (21) having a first central axis (L1) extending in a vertical direction, the transmission assembly (3) being assembled to the side brush housing (21) along the direction of the first central axis (L1), so that the drive motor (12) drives the transmission assembly (3) to rotate relative to the side brush housing (21) around the first central axis (L1); A plurality of side brush claws (22) are mounted on the circumferential outer wall of the side brush housing (21) at equal angle intervals, each side brush claw (22) having a degree of freedom to rotate around a second central axis (L2) extending in the radial direction of the side brush housing (21) so as to have a cleaning posture with its end in contact with the ground, and a retracted posture out of contact with the ground; The side brush claw (22) is connected to the drive motor (12) via the transmission assembly (3) so as to switch between the cleaning posture and the retracted posture in response to the rotation direction of the drive motor (12).

2. The side brush device according to claim 1, characterized in that: The side brush claw (22) comprises: A support portion (221), the support portion (221) comprising a first support arm (221a) extending along the radial direction and a second support arm (221b) connected to the first support arm (221a) and forming an obtuse angle, the first support arm (221a) being assembled to the side brush housing (21); Bristles (222), the bristles (222) are mounted to the end of the second arm (221b).

3. The side brush device according to claim 2, characterized in that: The first support arm (221a) comprises a first meshing portion (223) meshing with the transmission assembly (3), and the arc angle of the first meshing portion (223) ranges from 75° to 120°.

4. The side brush device according to claim 1, characterized in that: The transmission assembly (3) comprises: A first transmission assembly, the first transmission assembly comprising an output gear shaft (31), the output gear shaft (31) outputting the torque of the motor assembly (1), the output gear shaft (31) being assembled to the position of the first central axis (L1) of the side brush housing (21) to drive the side brush housing (21) to rotate synchronously; a second transmission assembly, the second transmission assembly being coaxially sleeved on the first transmission assembly, the second transmission assembly being driven by the first transmission assembly to rotate around the first central axis (L1), and having a rotational freedom relative to the first transmission assembly; The second transmission component is configured to be rotatable in a first direction, the first transmission component is configured to be rotatable in opposite first and second directions, and the side brush claw (22) is driven to rotate by the second transmission component.

5. The side brush device according to claim 4, characterized in that: The first transmission assembly comprises: A central column (211), wherein the central column (211) extends from the inner wall of the side brush housing (21) along the direction of the first central axis (L1), and the output gear shaft (31) is fixed to the central column (211).

6. The side brush device according to claim 4, characterized in that: The second transmission assembly comprises: A one-way link bracket (32), the one-way link bracket (32) is coaxially sleeved on the first transmission component and has a rotational freedom relative to the first transmission component; A one-way bearing (33), wherein the one-way bearing (33) is fixed to the output end opening (13) and cooperates with the peripheral wall of the one-way link bracket (32) via a one-way fixing bracket (34); the one-way bearing (33) rotates synchronously with the one-way link bracket (32) to limit the one-way link bracket (32) to be rotatable in a first direction.

7. The side brush device according to claim 6, characterized in that: include: A torsion spring (35), wherein the torsion spring (35) is connected between the side brush housing (21) and the one-way link bracket (32).

8. The side brush device according to claim 7, characterized in that: When the second transmission assembly and the output gear shaft (31) rotate in the same direction, the side brush claw (22) switches from the stowed posture to the cleaning posture in response to the rotation of the output gear shaft (31); When the second transmission assembly and the output gear shaft (31) rotate in opposite directions, the side brush claw (22) switches from the cleaning posture to the retracted posture in response to the rotation of the output gear shaft (31).

9. The side brush device according to claim 8, characterized in that: The inner wall of the side brush housing (21) and / or the one-way link bracket (32) further comprises a limiting portion (224) for limiting the side brush claw (22) to the cleaning posture and the retracted posture respectively.

10. A sweeping machine, characterized in that: The invention comprises a side brush device as claimed in any one of claims 1 to 9.

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