Brush head, brush head assembly and cleaning vehicle having the brush head assembly

Abstract

The present invention relates to the field of cleaning equipment, and provides a brush head including a base, a connecting member, a first sub-brush head and a second sub-brush head, wherein the connecting member is fixedly mounted on the base, one end of the first sub-brush head is mounted on the base and can move relative to the base along the rotation axis of the base, the second sub-brush head is fixedly mounted on the base, the hardness of the bristles of the first sub-brush head is greater than the hardness of the bristles of the second sub-brush head, and the length of the second bristles is greater than the length of the first bristles. In the above manner, when it is necessary to clean a flat ground, only the second sub-brush head with softer bristles needs to be used, which reduces the wear of the bristles and prolongs the service life; when it is necessary to clean a ground with a more complex terrain or an uneven ground, the first sub-brush head extends from the base and contacts the ground together with the second sub-brush head. The bristles of the first sub-brush head are shorter and harder, which can provide greater cleaning force, thereby improving the cleaning effect.

Description

[Technical field]

[0002] The invention relates to the field of cleaning equipment, and in particular to a brush head, a brush head assembly and a cleaning vehicle having the brush head assembly. [Background technology]

[0004] At present, the application of autonomous driving technology in ground vehicles has gradually matured. Autonomous driving technology is efficient, safe, and can increase the service life of vehicles. Autonomous driving technology is applied to street sweepers, which can replace drivers, greatly increase the working hours of street sweepers, and ensure that street sweepers can continuously maintain the cleanliness of the regional environment.

[0005] The existing sweepers can only clean relatively flat surfaces due to their relatively simple brush head structures, and are unable to clean surfaces with complex or uneven terrains, which seriously restricts the cleaning capabilities of the existing sweepers and limits the application scope of the existing sweepers. [Summary of the invention]

[0007] In order to solve the above technical problems, the embodiments of the present invention provide a brush head, a brush head assembly and a cleaning vehicle having the brush head assembly that can be applied to different terrains.

[0008] In order to solve the above technical problems, the embodiments of the present invention provide the following technical solutions:

[0009] In one aspect, a brush head is provided, comprising:

[0010] A base, one surface of which is inwardly recessed to form a receiving space, a bottom surface of the receiving space is provided with a connecting hole, and a side surface of the receiving space is provided with a sliding groove;

[0011] A connecting piece, fixedly mounted on another surface of the base;

[0012] The first sub-brush head comprises a connecting portion, a first fixing portion and first bristles, one end of the connecting portion is fixedly connected to the first fixing portion, and the other end is provided with a clamping block, the connecting portion is located in the receiving space, the clamping block is installed in the sliding groove and can slide along the sliding groove, and the first bristles are fixed to the first fixing portion;

[0013] The second sub-brush head includes a second fixing part and second bristles. The second fixing part is in a circular ring shape, and one surface of the second fixing part is fixedly connected to the other surface of the base. One end of the second bristle is fixedly installed on the outer side surface of the second fixing part. The hardness of the second bristle is less than that of the first bristle, and the length of the second bristle is greater than that of the first bristle.

[0014] In some embodiments, the first fixing portion is in a truncated cone shape, one end surface of which is fixedly connected to one end of the connecting portion, the first bristles are fixed to the other end surface of the first fixing portion, and the side surface of the first fixing portion is a conical surface;

[0015] The inner side surface and the outer side surface of the second fixing portion are both conical surfaces, and the side surface of the first fixing portion abuts against the inner side surface of the second fixing portion, and the second fixing portion is made of elastic material.

[0016] On the other hand, a brush head assembly is provided, comprising:

[0017] A first driving device having a push rod;

[0018] a second driving device having a rotating shaft, the first driving device being mounted on the second driving device;

[0019] a bracket, wherein the second driving device is mounted on the bracket;

[0020] In the brush head described above, the push rod passes through the second driving device and is connected to the other end of the connecting part, and the rotating shaft is fixedly connected to the connecting member.

[0021] In some embodiments, the second driving device includes the rotating shaft and a main body, the rotating shaft is provided with a through hole, the pushing rod passes through the through hole and is rotatably connected to the other end of the connecting part, and the pushing rod and the rotating shaft are rotatable with respect to each other.

[0022] In some embodiments, a groove is disposed at the other end of the connecting portion, and a protrusion is disposed at one end of the pushing rod. The protrusion is received in the groove and can rotate in the groove.

[0023] In some embodiments, a bearing is provided between the groove and the push rod, and the protrusion is clamped with the bearing.

[0024] On the other hand, a cleaning vehicle is provided, comprising the brush head assembly described above.

[0025] Compared with the prior art, the brush head provided by the present invention includes a base, a connector, a first sub-brush head and a second sub-brush head. The connector is fixedly mounted on the base, one end of the first sub-brush head is mounted on the base, and can move relative to the base along the rotation axis of the base, the second sub-brush head is fixedly mounted on the base, the hardness of the bristles of the first sub-brush head is greater than the hardness of the bristles of the second sub-brush head, and the length of the second bristles is greater than the length of the first bristles. In the above manner, when it is necessary to clean a flat ground, only the second sub-brush head with softer bristles needs to be used, which reduces the wear of the bristles and prolongs the service life; when it is necessary to clean a ground with a more complex terrain or an uneven ground, the first sub-brush head extends from the base and contacts the ground together with the second sub-brush head. The bristles of the first sub-brush head are shorter and harder, which can provide greater cleaning force, thereby improving the cleaning effect.

Brief Description of the Drawings

[0027] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and the figures in the drawings do not constitute proportional limitations unless otherwise stated.

[0028] Figure 1 A three-dimensional diagram of a brush head assembly provided in one embodiment of the present invention;

[0029] Figure 2 for Figure 1 An exploded view of the brush head assembly is shown;

[0030] Figure 3 for Figure 1 An assembly diagram of a first drive device and a second drive device in the brush head assembly shown;

[0031] Figure 4 for Figure 3 An exploded view of the first drive device and the second drive device shown;

[0032] Figure 5 for Figure 1 A perspective view of a brush head in the brush head assembly shown;

[0033] Figure 6 for Figure 5 Another perspective view of the brush head shown;

[0034] Figure 7 for Figure 5 An exploded view of the brush head shown;

[0035] Figure 8 for Figure 5 AA cross-section of the brush head shown. [Specific implementation method]

[0037] For ease of understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to another element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right", "inside", "outside" and similar expressions used in this specification are for illustrative purposes only.

[0038] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0039] See also Figure 1 Combined with Figure 2 , Figure 1 A brush head assembly 100 provided in one embodiment of the present invention includes a first driving device 10, a second driving device 20, a bracket 30 and a brush head 40. The first driving device 10 is mounted on the second driving device 20, and the first driving device 10 has a push rod 11, the push rod 11 passes through the second driving device 20 and abuts against the brush head 40, the second driving device 20 has a rotating shaft 21, the second driving device 20 is mounted on the bracket 30, and one end of the rotating shaft 21 passes through the bracket 30.

[0040] See also Figure 2 Combined with Figure 5 and Figure 6The brush head 40 includes: a connecting member 41, a base 42, a first sub-brush head 43 and a second sub-brush head 44. The connecting member 41 is fixedly mounted on one end of the rotating shaft 21; the connecting member 41 is fixedly mounted on a surface of the base 42. One end of the first sub-brush head 43 is rotatably connected to the push rod 11. The second sub-brush head 44 rotates in a circular ring and is fixedly mounted on the other surface of the base 42. The other end of the first sub-brush head 43 is surrounded by the second sub-brush head 44. The first sub-brush head 43 can move relative to the second sub-brush head 44 along the axis of the second sub-brush head 44 under the drive of the push rod 11 of the first driving device 10 (that is, the first sub-brush head 43 can complete the telescopic action relative to the second sub-brush head 44). The second driving device 20 can drive the brush head 40 to rotate through the rotating shaft 21. The bristle hardness of the first sub-brush head 43 is greater than the bristle hardness of the second sub-brush head 44. When cleaning a floor with good flatness, only the second sub-brush head 44 needs to be in contact with the floor for cleaning. Since the bristles of the second sub-brush head 44 are softer, the friction with the floor can be reduced, thereby reducing the wear on the bristles and increasing the service life. When cleaning a floor with poor flatness or the dirt on the floor is sticky, the second sub-brush head 44 cannot clean the floor. The first sub-brush head 43 needs to be extended to work with the second sub-brush head 44. Since the bristles of the first sub-brush head 43 are harder, the brushing force can be increased to achieve a thorough cleaning effect.

[0041] like Figure 3 and 4 As shown, the first driving device 10 is specifically one of a cylinder and a hydraulic cylinder. In the embodiment of the present invention, the first driving device 10 is a cylinder. The first driving device 10 has a push rod 11, and one end (i.e., the extended end) of the push rod 11 is rotatably connected to the first sub-brush head 43. The extended end of the push rod 11 is provided with a protrusion (not shown), and the protrusion is annular and surrounds the extended end of the push rod 11.

[0042] The second driving device 20 is specifically a motor. The second driving device 20 includes a rotating shaft 21 and a main body 22. The main body 22 includes a stator (not shown), a rotor (not shown) and a shell (not shown). The stator and the rotor are both installed in the shell. The stator is fixedly connected to the shell. One end (i.e., the protruding end) of the rotating shaft 21 extends to the outside of the shell, and the rotor is fixedly connected to the other end of the rotating shaft 21. One end of the rotating shaft 21 passes through the shell, and the rotating shaft 21 is provided with a through hole 211 along its axial direction. One end of the push rod 11 passes through the through hole 211 and is rotatably connected to the first brush head 43.

[0043] Please refer again Figure 2 The bracket 30 includes a supporting portion 31 and a mounting portion 32. The supporting portion 31 is in the shape of a long rod, and the mounting portion 32 is in the shape of a flat plate. The mounting portion 32 is fixedly connected to one end of the supporting portion 31. The second driving device 20 is fixedly mounted on the mounting portion 32.

[0044] See also Figure 7 and Figure 8The brush head 40 includes a connecting member 41, a base 42, a first sub-brush head 43 and a second sub-brush head 44. The connecting member 41 is fixedly mounted on one end of the rotating shaft 21. The connecting member 41 is roughly cylindrical, one end of which is sleeved on one end of the rotating shaft 21, and a screw or bolt passes through the side wall of the connecting member 41 and is screwed into one end of the rotating shaft 21, so that the connecting member 41 is fixedly connected to the rotating shaft 21. The other end of the connecting member 41 is fixedly mounted on one surface of the base 42. The other surface of the base 42 is recessed inward to form a receiving space 42. The bottom surface of the receiving space 421 is provided with a connecting hole 422, and the side surface of the receiving space 421 is provided with a sliding groove 423. The sliding groove 423 is arranged along the axial direction of the rotating shaft 21. The first sub-brush head 43 includes a connecting portion 431, a first fixing portion 432 and first bristles 433. The connecting portion 431 is cylindrical, one end of which is fixedly connected to the first fixing portion 432, and the other end is provided with a block 4311. The block 4311 is fixed to the outer surface of one end of the connecting portion 431. The connecting portion 431 is located in the receiving space 421, the block 4311 is installed in the sliding groove 423 and can slide along the sliding groove 423, and one end of the first bristles 433 is fixed to the other end of the connecting portion 431. When the base 42 rotates, the first sub-brush head 43 can be driven to rotate together through the sliding groove 423 and the block 4311. The first fixing portion 432 is truncated cone-shaped, the surface with a larger area is fixedly connected to one end of the connecting portion 431, and the other surface with a smaller area is fixed with the first bristles 433, and the side surface thereof is a conical surface. The end surface of one end of the connecting portion 431 is provided with a groove 4312, and the groove 4312 is used to accommodate the protrusion, and the protrusion can rotate in the groove 4312 and prevent one end of the push rod 11 from slipping out of the groove 4312. In some other embodiments, in order to improve the smoothness of the mutual rotation of the push rod 11 and the connecting portion 431, a bearing is provided between the groove 4312 and the push rod 11, and the protrusion clamps the bearing to prevent the bearing from slipping out of the push rod 11. The second sub-brush head 44 includes a second fixing portion 441 and a second bristle 442, the second fixing portion 441 rotates in a circular ring, and one surface of the second fixing portion 441 is fixedly mounted on a surface of the base 42, the inner side and outer side of the second fixing portion 441 are both conical surfaces, and the inner side of the second fixing portion 441 corresponds to and fits with the side of the first fixing portion 432. One end of the second bristle 442 is fixed to the outer side of the second fixing portion 441. The second fixing portion 441 is made of elastic material. The side surface of the first fixing portion 432 abuts against the inner side surface of the second fixing portion 441 .When the first brush head 43 is extended along the axis of the second brush head 44, the side surface of the first fixing portion 432 squeezes the inner side surface of the second fixing portion 441 outward, and the second fixing portion 441 is made of elastic material such as rubber, and is elastically deformed under squeezing, so that the second fixing portion 441 opens outward, causing the bristles fixed on the second fixing portion 441 to spread out in all directions, thereby increasing the cleaning range of the entire brush head assembly 100.

[0045] The other end of the first sub-brush head 43 is surrounded by the second sub-brush head 44. The first sub-brush head 43 can move relative to the second sub-brush head 44 along the axis of the second sub-brush head 44 under the drive of the push rod 11 of the first driving device 10 (that is, the first sub-brush head 43 can complete the telescopic action relative to the second sub-brush head 44). The second driving device 20 can drive the brush head 40 to rotate through the rotating shaft 21.

[0046] In the actual use of the sweeper with the brush head assembly 100, when the sweeper detects that the ground in the area to be swept is relatively smooth and flat, and there is no sand or other garbage that is difficult to clean, only the second sub-brush head 44 needs to contact the ground. The second bristles 442 of the second sub-brush head 44 are longer and softer than the first bristles 433 of the first brush head 43. On the one hand, it can reduce the wear of the bristles and increase the service life. On the other hand, it can reduce the resistance during rotation and save energy. When the sweeper detects that the ground in the area to be swept is uneven, or there is sand or other garbage that is difficult to clean, the first sub-brush head 43 can be driven by the push rod 11 of the first drive device 10 to extend along the axis of the second sub-brush head 44, and the cleaning end of the first bristle 433 is basically level with the cleaning end of the second bristle 442. Since the first bristles 433 are shorter and harder than the second bristles 442, when the first sub-brush head 43 and the second sub-brush head 44 work together, the cleaning force and strength are greater, and the sand and dust that are difficult to clean can be cleaned.

[0047] Furthermore, the side surface of the first fixing part 432 presses the inner side surface of the second fixing part 441 outwardly, and the second fixing part 441 is made of elastic material and elastically deforms under extrusion, and the second fixing part 441 opens outwardly, causing the bristles fixed on the second fixing part 441 to spread outwardly, thereby increasing the cleaning range of the entire brush head assembly 100. When the first sub-brush head 43 extends along the axis of the second sub-brush head 44, the side surface of the first fixing part 432 presses the inner side surface of the second fixing part 441 outwardly, and the second fixing part 441 is made of elastic material and elastically deforms under extrusion, and the second fixing part 441 opens outwardly, causing the bristles fixed on the second fixing part 441 to spread outwardly, thereby increasing the cleaning range of the entire brush head assembly 100. The side surface of the first fixed part 432 squeezes the inner side surface of the second fixed part 441 outward, and the second fixed part 441 is made of elastic material and produces elastic deformation under squeezing, and the second fixed part 441 opens outward, causing the bristles fixed on the second fixed part 441 to spread out in all directions. When the second bristles 442 are more inclined, the cleaning range can be expanded in the horizontal direction, and it is easier to clean the angle between the foot of the wall or the curb and the ground, so that the cleaning effect of the sweeper is better when cleaning the foot of the wall or the curb.

[0048] Compared with the prior art, the brush head provided by the present invention includes a base, a connector, a first sub-brush head and a second sub-brush head. The connector is fixedly mounted on the base, one end of the first sub-brush head is mounted on the base, and can move relative to the base along the rotation axis of the base, the second sub-brush head is fixedly mounted on the base, and the hardness of the bristles of the first sub-brush head is greater than the hardness of the bristles of the second sub-brush head. In the above manner, when it is necessary to clean a flat ground, only the second sub-brush head with softer bristles needs to be used, which reduces the wear of the bristles and prolongs the service life; when it is necessary to clean a ground with a more complex terrain or an uneven ground, the first sub-brush head extends from the base and contacts the ground together with the second sub-brush head. The bristles of the first sub-brush head are shorter and harder, which can provide greater cleaning force, thereby improving the cleaning effect.

[0049] Another embodiment of the present invention provides a cleaning vehicle, wherein the cleaning vehicle has the brush head assembly.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they may still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A brush head assembly, characterized in that: include A first driving device having a push rod; a second driving device having a rotating shaft, the first driving device being mounted on the second driving device; a bracket, wherein the second driving device is mounted on the bracket; A brush head, comprising a base, a connecting member, a first sub-brush head and a second sub-brush head, wherein one surface of the base is recessed inwardly to form a receiving space, a connecting hole is provided on the bottom surface of the receiving space, a sliding groove is provided on the side surface of the receiving space, the connecting member is fixedly installed on the other surface of the base, the first sub-brush head comprises a connecting portion, a first fixing portion and first bristles, one end of the connecting portion is fixedly connected to the first fixing portion, and a clamping block is provided on the other end, the connecting portion is located in the receiving space, the clamping block is installed in the sliding groove and can slide along the sliding groove, the first bristles are fixed to the first fixing portion, the second sub-brush head comprises a second fixing portion and second bristles, the second fixing portion is annular, one surface of which is fixedly connected to the other surface of the base, one end of the second bristles is fixedly installed on the outer side surface of the second fixing portion, the hardness of the second bristles is less than that of the first bristles, and the length of the second bristles is greater than that of the first bristles, the pushing rod passes through the second driving device and is connected to the other end of the connecting portion, and the rotating shaft is fixedly connected to the connecting member; The second driving device comprises the rotating shaft and a main body, the rotating shaft is provided with a through hole, the pushing rod passes through the through hole and is rotatably connected to the other end of the connecting part, and the pushing rod and the rotating shaft are rotatable with each other; The other end of the connecting part is provided with a groove, and one end of the pushing rod is provided with a protruding part, and the protruding part is received in the groove and can rotate in the groove; A bearing is arranged between the groove and the push rod, and the protrusion is clamped with the bearing.

2. The brush head assembly according to claim 1, characterized in that: The first fixing part is in a truncated cone shape, one end surface of which is fixedly connected to one end of the connecting part, the first bristles are fixed to the other end surface of the first fixing part, and the side surface of the first fixing part is a conical surface; The inner side surface and the outer side surface of the second fixing portion are both conical surfaces, and the side surface of the first fixing portion abuts against the inner side surface of the second fixing portion, and the second fixing portion is made of elastic material.

3. A sweeper, characterized in that: The brush head assembly comprises the brush head assembly as claimed in any one of claims 1 to 2.

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