Third brush device and floor cleaning apparatus having the same

Abstract

The present application relates to the technical field of cleaning equipment, and discloses a third brush device and a floor cleaning equipment with the same. The third brush device comprises a brush disc assembly, a connecting piece and a dead point avoidance mechanism. One end of the connecting piece is used for being rotatably connected with the floor cleaning equipment, and the connecting piece can rotate relative to the floor cleaning equipment around a first rotation center. The brush disc assembly is rotatably arranged at the other end of the connecting piece. The dead point avoidance mechanism comprises a rotating piece and a traction piece. The rotating piece is rotatably mounted on the connecting piece, and the traction piece is connected with the rotating piece and the connecting piece. The rotating piece comprises a second rotation center and a collision part used for colliding with an obstacle. The first rotation center, the second rotation center and the collision part are not collinear. The third brush device and the floor cleaning equipment with the same can avoid the collision damage accident at the dead point position.

Description

[0001] This application is a divisional application of patent application number 202110992905.1 (the original application was filed on August 27, 2021, and the invention was entitled "Third Brush Device and Floor Cleaning Equipment Having the Same"). Technical Field

[0002] This invention relates to the field of cleaning equipment technology, and more particularly to a third brush device and a floor cleaning device having the same. Background Technology

[0003] Existing outdoor road sweepers generally use a third brush to expand the operating range. In the direction of travel of the outdoor road sweeper, the third brush is generally installed at the front of the sweeper and can move in the directions of up and down, front and back, and left and right. Unlike the main brush or the side brushes on both sides, it can greatly increase the range and convenience of the vehicle's sweeping operation.

[0004] Furthermore, the standalone front-mounted third brush has advantages such as good operational symmetry and the ability to mitigate impacts from both sides. However, existing standalone front-mounted third brushes have dead spots. Thus, when the standalone front-mounted third brush is cleaning in motion and is in a dead spot position, it is impossible to apply an avoidance torque to the third brush, which can easily lead to collision damage to the standalone front-mounted third brush.

[0005] Therefore, there is an urgent need for a third brush device and floor cleaning equipment with it to solve the above problems. Summary of the Invention

[0006] Based on the above, the purpose of this invention is to provide a third brush device and a floor cleaning equipment having the same, which can avoid collision damage at dead spots.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] The third brush device includes:

[0009] Disk flushing components;

[0010] A connector, one end of which is rotatably connected to the floor cleaning equipment and is rotatable relative to the floor cleaning equipment about a first rotation center, and the brush assembly is rotatably disposed at the other end of the connector;

[0011] A dead-point avoidance mechanism includes a rotating component and a traction component. The rotating component is rotatably mounted on the connecting component. The rotating component includes a second rotation center and a collision part for colliding with an obstacle. The first rotation center, the second rotation center, and the collision part are not collinear. The traction component is a first elastic component. The two ends of the first elastic component are respectively provided with a first fixing part and a second fixing part. The first fixing part and the second fixing part are respectively connected to the rotating component and the connecting component. The first fixing part is located between the second rotation center and the collision part.

[0012] When the brush assembly is subjected to resistance pointing towards the first rotation center, the collision part collides with the obstacle, causing the rotating member to rotate toward the connecting member, which in turn causes the first elastic member to extend and rotate around the second rotation center, thereby enabling the connecting member to rotate around the first rotation center under the elastic torque of the first elastic member.

[0013] As a preferred embodiment of the third brush device, the dead point avoidance mechanism further includes a fixing member fixed to the other end of the connecting member, and the first end of the rotating member is hinged to the fixing member; the first elastic member is disposed on the side of the fixing member away from the connecting member, and the rotating member is located between the first elastic member and the connecting member.

[0014] As a preferred embodiment of the third brush device, the fixing member is provided with a stop portion, which is a stop wall provided on a first part of the fixing member. The first part includes the stop wall and a top wall and a bottom wall provided on opposite sides of the stop wall. A channel for the rotating member to pass through is formed between the top wall, the bottom wall and the stop wall, and the channel has an opening that opens toward the side away from the first elastic member. The rotating member can rotate toward the side away from the first elastic member through the opening to drive the first elastic member to extend.

[0015] As a preferred embodiment of the third brush device, the stop portion is located between the rotating member and the first elastic member. The stop portion is used to abut against the rotating member so that the rotating member can apply a force to the fixed member through the stop portion, thereby enabling the fixed member to drive the connecting member to rotate around the first rotation center.

[0016] As a preferred embodiment of the third brush device, the second end of the rotating member is provided with the collision part, and the second end of the rotating member extends toward the outside of the brush assembly so that the collision part can collide with the obstacle.

[0017] As a preferred embodiment of the third brush device, when the collision part collides with an obstacle, and the force exerted by the obstacle on the collision part is not directed towards the first rotation center, under the action of this force, the connecting member and the brush assembly can rotate around the first rotation center to bypass the obstacle;

[0018] When the collision part collides with an obstacle, and the force exerted by the obstacle on the collision part is directed towards the first rotation center, under the action of this force, the rotating member drives the first elastic member to extend and rotate around the second rotation center. The elastic reaction force of the first elastic member can drive the connecting member and the brush assembly to rotate around the first rotation center to bypass the obstacle.

[0019] As a preferred embodiment of the third brush device, the collision part is a wheel disposed on the second end of the rotating member.

[0020] As a preferred embodiment of the third brush device, the connector includes a connecting rod and a connecting seat hinged to the connecting rod. The end of the connecting rod away from the connecting seat is used to hinge to the floor cleaning equipment. The brush assembly is rotatably mounted on the connecting seat, and the dead-point avoidance mechanism is mounted on the connecting seat.

[0021] As a preferred embodiment of the third brush device, the first elastic element is a spring; the third brush device further includes two second springs, which are respectively disposed on opposite sides of the connector. When the connector rotates around the first rotation center, one of the two second springs extends and the other is compressed, so that the connector can rotate in the opposite direction under the elastic force of one of them after rotating around the first rotation center.

[0022] The floor cleaning equipment includes the third brush device described in any of the above embodiments.

[0023] The beneficial effects of this invention are as follows:

[0024] This invention provides a third brush device and a floor cleaning apparatus having the same. The third brush device includes a dead-point avoidance mechanism, which comprises a rotating member and a traction member. The rotating member is rotatably mounted on a connecting member. The traction member is connected to the rotating member and the connecting member. The rotating member includes a second rotation center and a collision part for colliding with an obstacle. The first rotation center, the second rotation center, and the collision part are not collinear. During the movement of the floor cleaning apparatus, when the brush assembly collides with an obstacle, but the resistance of the obstacle is not directed towards the first rotation center, the connecting member drives the brush assembly to rotate around the first rotation center, thereby allowing the brush assembly to avoid the obstacle. When the brush assembly collides with an obstacle, but the resistance of the obstacle is directed towards the first rotation center, the collision part of the dead-point avoidance mechanism collides with the obstacle. Thus, under the reaction force of the obstacle, the rotating member drives the traction member to rotate around the second rotation center, and the traction member drives the connecting member to rotate around the first rotation center, thereby enabling the traction member to drive the connecting member to rotate around the first rotation center. In this way, the traction member can apply a pushing force to the obstacle through the connecting member, thereby allowing the brush assembly to bypass the obstacle under the reaction force of the pushing force. That is, the dead-point avoidance mechanism ensures that the first rotation center, the second rotation center, and the collision part are not collinear, allowing the collision part to collide with the obstacle when the brush assembly experiences resistance pointing towards the first rotation center. Furthermore, the rotating member can drive the traction member to rotate around the second rotation center, which in turn drives the connecting member to rotate around the first rotation center. This allows the brush assembly to apply a pushing force to the obstacle, and the reaction force of this pushing force is no longer directed towards the first rotation center. Thus, the brush assembly can bypass the obstacle, avoiding collision damage at the dead-point position (i.e., the position where the resistance of the obstacle on the brush assembly points towards the first rotation center). Therefore, the present invention provides a third brush device and a floor cleaning equipment having the same, which can avoid collision damage at the dead-point position. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0026] Figure 1 This is a top view of the third brush device provided in a specific embodiment of the present invention;

[0027] Figure 2 This is an isometric view of the third brush device provided in a specific embodiment of the present invention;

[0028] Figure 3 yes Figure 2A magnified view of a portion of point A in the middle;

[0029] Figure 4 yes Figure 2 A magnified view of point A from another perspective;

[0030] Figure 5 This is a top view of the third brush device provided in a specific embodiment of the present invention.

[0031] In the picture:

[0032] 13. Brush plate; 15. Brush head; 16. Connecting rod; 17. Connecting seat; 18. Driving component; 19. Driving rod; 21. First rotation center; 25. Second rotation center; 26. Collision part; 27. Rotating component; 28. Traction component; 29. ​​Fixing component; 30. First fixing part; 31. Second fixing part; 32. Stop part; 34. Second spring; 35. First driving center; 37. Second driving center; 39. First part; 41. Second part; 43. Hinge part; 45. Second pivot; 47. First hook tooth; 49. Second hook tooth; 51. Top wall; 53. Bottom wall; 57. Opening; 59. Dead point avoidance mechanism. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0035] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0038] Specifically, such as Figures 1 to 4 As shown, one embodiment of the present invention provides a third brush device. This third brush device can be installed in a floor cleaning device. This floor cleaning device can be, for example, an outdoor sweeper. For example, the third brush device is used in a floor scrubber. Of course, the third brush device is not limited to outdoor sweepers; it can also be used in other floor cleaning devices, which is not specified in this application. This application uses a floor scrubber as an example for description.

[0039] The third brush device includes a brush plate assembly, a connector, and a dead-point avoidance mechanism 59. One end of the connector is rotatably connected to the floor cleaning equipment, and the connector can rotate relative to the floor cleaning equipment around a first rotation center 21. The brush plate assembly is rotatably disposed at the other end of the connector. The dead-point avoidance mechanism 59 includes a rotating member 27 and a traction member 28. The rotating member 27 is rotatably mounted on the connector, and the traction member 28 is connected to the rotating member 27 and the connector. The rotating member 27 includes a second rotation center 25 and a collision part 26 for colliding with an obstacle. The first rotation center 21, the second rotation center 25, and the collision part 26 are not collinear. When the brush plate assembly is subjected to resistance pointing towards the first rotation center 21, the collision part 26 collides with the obstacle, so that the rotating member 27 can drive the traction member 28 to rotate around the second rotation center 25, and then the traction member 28 can drive the connector to rotate around the first rotation center 21.

[0040] As can be seen from the above technical solution, the third brush device of the present invention is provided with a dead-point avoidance mechanism 59, which includes a rotating member 27 and a traction member 28. The rotating member 27 is rotatably mounted on the connecting member. The traction member 28 is connected to the rotating member 27 and the connecting member. The rotating member 27 includes a second rotation center 25 and a collision part 26 for colliding with an obstacle. The first rotation center 21, the second rotation center 25, and the collision part 26 are not collinear. During the movement of the floor cleaning equipment, when the brush assembly collides with an obstacle, but the resistance of the obstacle does not point towards the first rotation center 21, the connecting member drives the brush assembly to rotate around the first rotation center 21, thereby enabling the brush assembly to bypass the obstacle. When the brush assembly collides with an obstacle, but the resistance of the obstacle points towards the first rotation center 21, the collision part 26 of the dead-point avoidance mechanism 59 collides with the obstacle. Under the reaction force of the obstacle, the rotating member 27 drives the traction member 28 to rotate around the second rotation center 25, and the traction member 28 drives the connecting member to rotate around the first rotation center 21. In this way, the traction member 28 can drive the connecting member to rotate around the first rotation center 21. Thus, the traction member 28 can apply a pushing force to the obstacle through the connecting member, thereby enabling the brush assembly to bypass the obstacle under the reaction force of the pushing force. That is, the dead point avoidance mechanism 59 ensures that the first rotation center 21, the second rotation center 25, and the collision part 26 are not collinear, so that the collision part 26 can collide with the obstacle when the brush assembly is subjected to resistance pointing towards the first rotation center 21. Furthermore, the rotating member 27 can drive the traction member 28 to rotate around the second rotation center 25, which in turn allows the traction member 28 to drive the connecting member to rotate around the first rotation center 21. This allows the brush assembly to apply a pushing force to the obstacle, and the reaction force of this pushing force is no longer directed towards the first rotation center 21. In this way, the brush assembly can bypass the obstacle and avoid collision damage at the dead point position (that is, the position where the resistance of the obstacle on the brush assembly is directed towards the first rotation center 21).

[0041] In this embodiment, the brush assembly includes a brush disk 13 and brush heads 15 disposed circumferentially on the outer edge of the brush disk 13. For example, as Figure 2 As shown, the brush plate 13 is generally circular. However, the brush plate 13 is not limited to a circular shape; it can also be other shapes, such as square, etc., which is not specified in this application. Furthermore, the brush head 15 is disposed on the bottom surface of the brush plate 13. The brush head 15 is used to contact the surface to be cleaned, so as to clean the surface. The surface to be cleaned can be, for example, the ground. However, the surface to be cleaned is not limited to the ground; it can also be other surfaces, which is not specified in this application. Furthermore, the brush head 15 is made of an elastic material.

[0042] In this embodiment, one end of the connector is rotatably connected to the floor cleaning equipment. Specifically, the connector includes a connecting rod 16 and a connecting seat 17 hinged to the connecting rod 16. The end of the connecting rod 16 away from the connecting seat 17 is provided with a hinge portion 43 for hinged connection to the floor cleaning equipment. For example, as... Figure 1 , Figure 2 As shown, the hinge 43 is located at the right end of the connecting rod 16. Furthermore, the connector is rotatable relative to the floor cleaning device about a first rotation center 21. Specifically, the hinge 43 is used to connect to the floor cleaning device via a first pivot (not shown). This connector is rotatable about this first pivot (not shown) as the first rotation center 21.

[0043] Furthermore, the floor cleaning equipment is equipped with racks. For example... Figure 2 As shown, a drive member 18 is hinged to the frame. A drive rod 19 is hinged to the end of the drive member 18 away from the frame. The end of the drive rod 19 away from the drive member 18 is used to connect to a connector via a first pivot (not shown). Thus, the connector can rotate about the first pivot relative to the drive rod 19. Specifically, as... Figure 2 As shown, the end of the drive rod 19 away from the drive member 18 is connected to the hinge portion 43 via a first pivot (not shown). Furthermore, the drive member 18 is rotatable relative to the frame about a second drive center 37. Thus, the drive member 18 can drive the drive rod 19 to rotate, thereby causing the drive rod 19 to drive the connecting rod 16 to rotate about the second drive center 37 during the movement of the floor cleaning equipment. Furthermore, the drive rod 19 is rotatable relative to the drive member 18 about a first drive center 35.

[0044] In this embodiment, the brush assembly is rotatably mounted on the other end of the connector. Specifically, the brush assembly is rotatably mounted on the connector 17. The brush assembly can rotate relative to the connector 17, thereby allowing the brush head 15 to clean the surface to be cleaned. Further, the drive rod 19 drives the connecting rod 16 to rotate around the second drive center 37 during the movement of the floor cleaning device, thus allowing the brush assembly to rotate around the second drive center 37, and the brush head 15 cleans the surface to be cleaned by oscillating around the second drive center 37. Further, as... Figure 1 As shown, the brush plate 13 and the connecting seat 17 are hinged by a second pivot 45. Specifically, the second pivot 45 is located at the center of the brush plate 13.

[0045] Furthermore, during the movement of the floor cleaning equipment, on the one hand, the connecting rod 16 rotates around the second drive center 37 with the drive rod 19, so that the brush head 15 can clean the surface to be cleaned; on the other hand, when the brush assembly collides with an obstacle, but the force of the obstacle is not directed towards the first rotation center 21, the connecting member can drive the brush assembly to rotate around the first rotation center 21, thereby enabling the brush assembly to avoid the obstacle. However, when the brush assembly collides with an obstacle, but the force of the obstacle is directed towards the first rotation center 21, the existing third brush device cannot apply an avoidance torque to the brush assembly, making it impossible for the brush assembly to avoid the obstacle.

[0046] In this embodiment, a dead-point avoidance mechanism 59 is installed on the connector. Specifically, as shown... Figure 3 As shown, the dead-point avoidance mechanism 59 includes a rotating member 27 and a traction member 28. The rotating member 27 is rotatably mounted on the connector. The dead-point avoidance mechanism 59 also includes a fixing member 29 fixed to the other end of the connector. Specifically, the fixing member 29 is fixed to the connecting seat 17. The fixing method can be screw connection, bolt connection, welding, or integral molding, etc. The rotating member 27 is rotatably mounted on the fixing member 29. Further, the rotating member 27 includes a second rotation center 25 and a collision part 26 for colliding with an obstacle. Specifically, the rotating member 27 is a rotating rod. The rotating rod has a first end and a second end facing away from each other. The second rotation center 25 and the collision part 26 are respectively disposed on the first end and the second end of the rotating member 27. Further, the first end of the rotating member 27 is hinged to the fixing member 29 via a third pivot (not shown in the figure). Thus, the rotating member 27 can rotate about the third pivot (not shown in the figure) with the second rotation center 25. More specifically, as Figure 4 As shown, the fixing member 29 includes a first portion 39 near the rotating member 27 and a second portion 41 away from the rotating member 27. The first end of the rotating member 27 is hinged to the first portion 39 via a third pivot (not shown). Furthermore, the second end of the rotating member 27 extends outward toward the brush assembly so that the collision portion 26 can collide with an obstacle. For example, as... Figure 3 As shown, the second end of the rotating member 27 extends away from the connecting member so that the collision part 26 can extend out of the brush disk 13, and thus the collision part 26 can collide with the obstacle. Further, the collision part 26 is a wheel provided on the second end of the rotating member 27. That is, the wheel is used to collide with the obstacle. Thus, when the wheel collides with the obstacle, the wheel can rotate with the obstacle. Compared to the relative sliding between the wheel and the obstacle, the rotation between the wheel and the obstacle reduces friction, thereby facilitating the movement of the wheel along the obstacle.

[0047] In this embodiment, the traction member 28 is connected to the rotating member 27 and the connecting member. Thus, the rotating member 27 can drive the traction member 28 to rotate around the second rotation center 25. The traction member 28 can drive the connecting member to rotate around the first rotation center 21.

[0048] In this embodiment, the first rotation center 21, the second rotation center 25, and the collision part 26 are not collinear. That is, as shown... Figure 5 As shown, the dead-point avoidance mechanism 59 ensures that the centers of the first rotation center 21, the second rotation center 25, and the collision part 26 are not collinear. This allows the collision part 26 to collide with the obstacle when the brush assembly experiences resistance pointing towards the first rotation center 21. Furthermore, the rotating member 27 drives the traction member 28 to rotate around the second rotation center 25, which in turn drives the connecting member to rotate around the first rotation center 21. This allows the brush assembly to apply a pushing force to the obstacle, and the reaction force of this pushing force no longer points towards the first rotation center 21. Thus, the brush assembly can bypass the obstacle, avoiding collision damage at the dead-point position (i.e., the position where the resistance of the obstacle on the brush assembly points towards the first rotation center 21). Specifically, the collision part 26 is a rotating wheel. The center of the collision part 26 is the center of the rotating wheel.

[0049] Specifically, when the brush assembly encounters resistance pointing towards the first rotation center 21, the collision part 26 collides with the obstacle, causing the rotating member 27 to drive the traction member 28 to rotate around the second rotation center 25. The traction member 28 then drives the connecting member to rotate around the first rotation center 21. Thus, during the movement of the floor cleaning equipment, when the brush assembly collides with an obstacle, and the obstacle's resistance points towards the first rotation center 21, the collision part 26 of the dead-point avoidance mechanism 59 collides with the obstacle. Under the reaction force of the obstacle, the rotating member 27 drives the traction member 28 to rotate around the second rotation center 25, the traction member 28 drives the connecting member to rotate around the first rotation center 21, and the connecting member then drives the brush assembly to rotate around the first rotation center 21.

[0050] In one embodiment, the traction member 28 is a first elastic member. The rotating member 27 can drive the first elastic member to rotate around the second rotation center 25, so that the first elastic member can be extended, thereby allowing the connecting member to rotate around the first rotation center 21 under the elastic torque of the first elastic member. In this way, the collision part 26 can convert the resistance it receives into an elastic torque for rotating the connecting member.

[0051] Furthermore, such as Figure 3As shown, a first fixing part 30 and a second fixing part 31 are respectively provided at both ends of the first elastic member. The first fixing part 30 and the second fixing part 31 are connected to the rotating member 27 and the fixing member 29, respectively. Specifically, the first fixing part 30 is a first fixing rod. The first fixing rod is fixed to the rotating member 27. The fixing method can be screw fixing, bolt fixing, welding fixing, etc. The second fixing part 31 is a second fixing rod. The first fixing rod is fixed to the second part 41 of the fixing member 29. The fixing method can be screw fixing, bolt fixing, welding fixing, etc. Further, the first fixing rod is provided with a first through hole for the first hook tooth 47 of one end of the first elastic member to pass through. The second fixing rod is provided with a second through hole for the second hook tooth 49 of the other end of the first elastic member to pass through. Further, the first fixing part 30 is located between the second rotation center 25 and the collision part 26.

[0052] Furthermore, the first elastic member is disposed on the side of the fixed member 29 away from the connecting member. The rotating member 27 is located between the first elastic member and the connecting member. When the collision part 26 collides with the obstacle, the rotating member 27 rotates toward the connecting member, thereby causing the first elastic member to extend so as to apply an elastic torque to the connecting member.

[0053] Furthermore, such as Figure 3 As shown, a stop portion 32 is provided on the fixing member 29. Specifically, the stop portion 32 is a stop wall provided on the first portion 39 of the fixing member 29. Further, as... Figure 4 As shown, the first part 39 includes a stop wall and a top wall 51 and a bottom wall 53 disposed on opposite sides of the stop wall. A channel for the rotating member 27 to pass through is formed between the top wall 51, the bottom wall 53, and the stop wall. This channel has an opening 57 that opens towards the side away from the first elastic member. Thus, the rotating member 27 can rotate towards the side away from the first elastic member through this opening 57. Further, a stop portion 32 is located between the rotating member 27 and the first elastic member. This stop portion 32 abuts against the rotating member 27, allowing the rotating member 27 to apply a force to the fixing member 29 through the stop portion 32, thereby enabling the fixing member 29 to drive the connecting member to rotate around the first rotation center 21.

[0054] Furthermore, the first elastic element is a spring. The third brush device described in this embodiment also includes two second springs 34. These two second springs 34 are respectively disposed on opposite sides of the connector. When the connector rotates around the first rotation center 21, one of the two second springs 34 extends while the other is compressed, so that after the connector rotates around the first rotation center 21, it can rotate in opposite directions under the elastic force of one of them. In this way, the connector can be tightened by the two second springs 34.

[0055] In this embodiment, a floor cleaning device includes a third brush as described above. This floor cleaning device can prevent collision damage at dead spots.

[0056] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. A third brush device, installed on a floor cleaning equipment, characterized in that, include: Disk flushing components; A connector, one end of which is rotatably connected to the floor cleaning equipment and the connector is rotatable relative to the floor cleaning equipment about a first rotation center (21), and the brush assembly is rotatably disposed at the other end of the connector; Dead-point avoidance mechanism (59), the dead-point avoidance mechanism (59) includes a rotating member (27) and a traction member (28), the rotating member (27) is rotatably mounted on the connecting member, the rotating member (27) includes a second rotation center (25) and a collision part (26) for colliding with an obstacle, the first rotation center (21), the second rotation center (25) and the collision part (26) are not collinear; the traction member (28) is a first elastic member, the two ends of the first elastic member are respectively provided with a first fixing part (30) and a second fixing part (31), the first fixing part (30) and the second fixing part (31) are respectively connected to the rotating member (27) and the connecting member, the first fixing part (30) is located between the second rotation center (25) and the collision part (26); When the brush assembly is subjected to resistance pointing towards the first rotation center (21), the collision part (26) collides with the obstacle, causing the rotating member (27) to rotate toward the connector, causing the first elastic member to extend and rotate around the second rotation center (25), thereby enabling the connector to rotate around the first rotation center (21) under the elastic torque of the first elastic member.

2. The third brush device according to claim 1, characterized in that, The dead point avoidance mechanism (59) further includes a fixing member (29) fixed to the other end of the connector, and the first end of the rotating member (27) is hinged to the fixing member (29); the first elastic member is disposed on the side of the fixing member (29) away from the connector, and the rotating member (27) is located between the first elastic member and the connector.

3. The third brush device according to claim 2, characterized in that, The fixing member (29) is provided with a stop (32), which is a stop wall provided on the first part (39) of the fixing member (29). The first part (39) includes the stop wall and a top wall (51) and a bottom wall (53) provided on opposite sides of the stop wall. A channel for the rotating member (27) to pass through is formed between the top wall (51), the bottom wall (53) and the stop wall. The channel has an opening (57) that opens away from the first elastic member. The rotating member (27) can rotate away from the first elastic member through the opening (57) to drive the first elastic member to extend.

4. The third brush device according to claim 3, characterized in that, The stop (32) is located between the rotating member (27) and the first elastic member. The stop (32) is used to abut against the rotating member (27) so that the rotating member (27) can apply force to the fixing member (29) through the stop (32), thereby enabling the fixing member (29) to drive the connecting member to rotate around the first rotation center (21).

5. The third brush device according to claim 2, characterized in that, The second end of the rotating member (27) is provided with the collision part (26), and the second end of the rotating member (27) extends toward the outside of the brush assembly so that the collision part (26) can collide with the obstacle.

6. The third brush device according to claim 5, characterized in that, When the collision part (26) collides with an obstacle, and the force exerted by the obstacle on the collision part (26) is not directed toward the first rotation center (21), under the action of the force, the connector and the brush assembly can rotate around the first rotation center (21) to bypass the obstacle. When the collision part (26) collides with the obstacle, and the force exerted by the obstacle on the collision part (26) is directed towards the first rotation center (21), under the action of this force, the rotating member (27) causes the first elastic member to extend and rotate around the second rotation center (25). The elastic reaction force of the first elastic member can drive the connecting member and the brush assembly to rotate around the first rotation center (21) to bypass the obstacle.

7. The third brush device according to claim 6, characterized in that, The collision part (26) is a rotating wheel disposed on the second end of the rotating member (27).

8. The third brush device according to any one of claims 1-7, characterized in that, The connector includes a connecting rod (16) and a connecting seat (17) hinged to the connecting rod (16). One end of the connecting rod (16) away from the connecting seat (17) is used to be hinged to the floor cleaning equipment. The brush assembly is rotatably mounted on the connecting seat (17). The dead point avoidance mechanism (59) is mounted on the connecting seat (17).

9. The third brush device according to any one of claims 1-7, characterized in that, The first elastic element is a spring; the third brush device also includes two second springs (34), which are respectively disposed on opposite sides of the connector. When the connector rotates around the first rotation center (21), one of the two second springs (34) extends and the other is compressed, so that the connector can rotate in the opposite direction under the elastic force of one of them after rotating around the first rotation center (21).

10. A floor cleaning device, characterized in that, Includes the third brush device as described in any one of claims 1-9.

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