Wheel brush mechanism of car washer and car washer

Abstract

The utility model belongs to the field of car washing machines, and discloses a car washing machine wheel brush mechanism and a car washing machine, the car washing machine wheel brush mechanism comprises a wheel brush telescopic assembly, a wheel brush rotating assembly and a wheel brush; the wheel brush telescopic assembly comprises a fixed support, a movable support and a telescopic driving part, and the movable support is connected to the fixed support in a sliding mode so that the wheel brush telescopic assembly can stretch or retract to adapt to wheels at different distance positions. The first end of the telescopic driving part is connected to the fixed bracket, and the second end of the telescopic driving part is movably connected to the movable bracket; when the wheel brush telescopic assembly extends long and the front end of the wheel brush telescopic assembly naturally droops, due to the movable connection design of the second end of the telescopic driving piece and the movable support, the telescopic driving piece can slightly move and adjust relative to the movable support, the drooping amount of the front end is effectively counteracted, and the service life of the wheel brush is prolonged. Therefore, the flexible driving piece is prevented from being bent or clamped due to the fact that the movable support generates overlarge pressure on the flexible driving piece.

Description

Technical Field

[0001] The utility model belongs to the technical field of car washing equipment, and more specifically, it relates to a wheel brush mechanism and a car washing machine for a car washing machine. Background Art

[0002] As a common car washing equipment, the car washing machine has been widely used in modern society. Among the various components of the car washing machine, the wheel brush mechanism is a key moving part, and its performance directly affects the overall working effect and stability of the car washing machine.

[0003] The traditional driving mode of the wheel brush mechanism usually adopts cylinder driving. Although the cylinder driving mode is simple and direct, when the moving parts of the wheel brush mechanism are heavy, especially when the cylinder extends, the front-end sag phenomenon will become particularly serious. This sag phenomenon may not only cause the bending of the cylinder piston rod, but also aggravate the wear of the rod support bearing and the rod seal, and even cause problems such as cylinder jamming during the working process. These problems not only reduce the service life of the cylinder, but also may lead to the decline of the overall performance of the car washing machine and affect the car washing effect. Summary of the Utility Model

[0004] The purpose of the embodiment of this application is to provide a wheel brush mechanism and a car washing machine for a car washing machine, so as to solve the technical problems that the front end of the wheel brush mechanism is prone to sag and the cylinder is prone to jamming in the prior art.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] Provide a wheel brush mechanism for a car washing machine, including:

[0007] A wheel brush telescopic assembly, including a fixed bracket, a movable bracket and a telescopic driving member, the movable bracket is slidably connected to the fixed bracket, the first end of the telescopic driving member is connected to the fixed bracket, and the second end of the telescopic driving member is movably connected to the movable bracket;

[0008] A wheel brush rotating assembly, connected to the movable bracket;

[0009] A wheel brush, installed on the wheel brush rotating assembly, and the wheel brush rotating assembly is used to drive the wheel brush to rotate.

[0010] As a further improvement of the above technical solution:

[0011] Optionally, a strip-shaped hole is provided on the movable bracket, the second end of the telescopic driving member passes through the strip-shaped hole and is movably connected to the strip-shaped hole.

[0012] Optionally, the telescopic driving member includes a limiting member connected to the second end of the telescopic driving member. The limiting member is clamped on both sides of the strip-shaped hole and has an activity gap with the movable bracket.

[0013] Optionally, the wheel brush telescopic assembly further includes a first guide wheel set and a second guide wheel set. The first guide wheel set is connected to the fixed bracket and is in rolling contact with the movable bracket; the second guide wheel set is connected to the movable bracket and is in rolling contact with the fixed bracket; when the wheel brush telescopic assembly extends, the first guide wheel set and the second guide wheel set approach each other; when the wheel brush telescopic assembly contracts, the first guide wheel set and the second guide wheel set move away from each other.

[0014] Optionally, a first flexible limiting protrusion is provided at the first end of the fixed bracket, a second flexible limiting protrusion is provided at the second end of the fixed bracket, and a third limiting protrusion is provided on the movable bracket. When the wheel brush telescopic assembly contracts to the limit position, the third limiting protrusion contacts the first flexible limiting protrusion; when the wheel brush telescopic assembly extends to the limit position, the third limiting protrusion contacts the second flexible limiting protrusion.

[0015] Optionally, the wheel brush rotating assembly includes a rotating driving member, a transmission shaft, a water supply bushing, and a nozzle; the rotating driving member is installed on the movable bracket, one end of the transmission shaft is drivingly connected to the rotating driving member, the other end of the transmission shaft is connected to the wheel brush, the water supply bushing is sleeved on the transmission shaft and is rotatably connected to the transmission shaft; the nozzle is arranged on the wheel brush; a water supply channel is provided in the transmission shaft, and the nozzle is communicated with the water supply channel.

[0016] Optionally, the water supply channel includes an annular groove extending along the circumferential direction of the transmission shaft and a straight hole extending along the axial direction of the transmission shaft. The water supply bushing is sleeved on the outer periphery of the annular groove, one end of the straight hole is communicated with the annular groove, and the other end of the straight hole is communicated with the nozzle.

[0017] Optionally, the wheel brush includes a flushing hole penetrating in the thickness direction, and the nozzle is arranged at one end of the flushing hole.

[0018] Optionally, the number of nozzles is multiple, and the nozzles are arranged on the wheel brush at intervals.

[0019] Based on a general utility model concept, the present utility model further provides a car washer including the above-mentioned car washer wheel brush mechanism.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] This application provides a wheel brush mechanism for a car washing machine, which includes a wheel brush telescopic component, a wheel brush rotating component, and a wheel brush. The wheel brush telescopic component includes a fixed bracket, a movable bracket, and a telescopic driving member. The movable bracket is slidably connected to the fixed bracket, enabling the wheel brush telescopic component to extend or shorten to adapt to wheels at different distance positions. The key point of this application is that the first end of the telescopic driving member is connected to the fixed bracket, and the second end of the telescopic driving member is movably connected to the movable bracket. When the wheel brush telescopic component extends relatively long and its front end shows a natural drooping phenomenon, due to the design of the movable connection between the second end of the telescopic driving member and the movable bracket, the telescopic driving member can make fine movement adjustments relative to the movable bracket, effectively offsetting the front-end drooping amount, thereby avoiding excessive pressure on the telescopic driving member by the movable bracket, which may cause the telescopic driving member to bend or jam.

[0022] The wheel brush mechanism for a car washing machine provided by this application, through the movable connection between the telescopic driving member and the movable bracket, effectively offsets the drooping amount at the front end of the wheel brush telescopic component, avoids excessive pressure on the telescopic driving member by the movable bracket, which may cause the telescopic driving member to bend or jam, improves the working stability and durability of the wheel brush mechanism for a car washing machine, and provides a better user experience for users.

[0023] This application also provides a car washing machine, including the above-mentioned wheel brush mechanism for a car washing machine; therefore, it also has the advantages of this wheel brush mechanism for a car washing machine. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 is a schematic three-dimensional structure of the wheel brush mechanism for a car washing machine of this application Figure 1 ;

[0026] Figure 2 is a schematic three-dimensional structure of the wheel brush mechanism for a car washing machine of this application Figure 2 ;

[0027] Figure 3 is a schematic vertical sectional structure diagram of the wheel brush mechanism for a car washing machine of this application;

[0028] Figure 4 is Figure 3 a partial enlarged structure diagram in

[0029] Figure 5 is a schematic horizontal sectional structure diagram of the wheel brush mechanism for a car washing machine of this application;

[0030] Figure 6 It is a schematic side view structure diagram of the wheel brush mechanism of the car washing machine of the present application.

[0031] Among them, each reference numeral in the figure:

[0032] 1. Wheel brush telescopic assembly; 11. Fixed bracket; 111. First flexible limit protrusion; 112. Second flexible limit protrusion; 12. Movable bracket; 121. Third limit protrusion; 13. Telescopic driving member; 131. Limiting member; 14. First guide wheel group; 15. Second guide wheel group; 2. Wheel brush rotating assembly; 21. Rotating driving member; 22. Transmission shaft; 221. Annular groove; 222. Straight hole; 23. Water supply bushing; 24. Nozzle; 3. Wheel brush; 31. Flushing hole. Specific embodiments

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0037] Unless otherwise defined, all professional terms used hereinafter have the same meaning as commonly understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the protection scope of the present invention.

[0038] like Figures 1 to 6 As shown, the present application provides a wheel brush mechanism for a car washing machine, comprising a wheel brush telescopic assembly 1, a wheel brush rotating assembly 2 and a wheel brush 3.

[0039] First, the wheel brush telescopic assembly 1 includes a fixed bracket 11, a movable bracket 12 and a telescopic drive member 13. The movable bracket 12 is slidably connected to the fixed bracket 11, so that the wheel brush telescopic assembly 1 can be extended or shortened to adapt to wheels at different distances. The focus of this application is that the first end of the telescopic drive member 13 is connected to the fixed bracket 11, and the second end of the telescopic drive member 13 is movably connected to the movable bracket 12; when the wheel brush telescopic assembly 1 is extended longer and its front end naturally droops, due to the movable connection design between the second end of the telescopic drive member 13 and the movable bracket 12, the telescopic drive member 13 can be slightly moved and adjusted relative to the movable bracket 12, effectively offsetting the front end droop, thereby avoiding the movable bracket 12 from exerting excessive pressure on the telescopic drive member 13, causing the telescopic drive member 13 to bend or jam. The specific implementation form of the telescopic drive member 13 includes but is not limited to a cylinder, a hydraulic cylinder or an electric push rod, etc., to meet the needs of different application scenarios.

[0040] Secondly, the wheel brush rotating assembly 2 is connected to the movable bracket 12 and moves synchronously with the movement of the movable bracket 12. The wheel brush 3 is installed on the wheel brush rotating assembly 2, and the wheel brush rotating assembly 2 drives the wheel brush 3 to rotate through its internal power device, thereby brushing the wheel.

[0041] The wheel brush mechanism of the car washing machine provided in the present application effectively offsets the sagging of the front end of the wheel brush telescopic assembly 1 through the movable connection between the telescopic drive member 13 and the movable bracket 12, thereby avoiding the movable bracket 12 from exerting excessive pressure on the telescopic drive member 13, causing the telescopic drive member 13 to bend or get stuck, thereby improving the working stability and durability of the wheel brush mechanism of the car washing machine and providing users with a better user experience.

[0042] In one embodiment of the present application, a strip hole is provided on the movable bracket 12. Specifically, the strip hole needs to extend in the vertical direction. The second end of the telescopic drive member 13 is inserted into the strip hole. When the wheel brush telescopic assembly 1 is in an extended state, especially when its front end naturally droops due to its own weight or external force, the second end of the telescopic drive member 13 can move in the strip hole to avoid direct contact with the movable bracket 12 and exerting pressure on the telescopic drive member 13, which causes the telescopic drive member 13 to bend. Conversely, when the wheel brush telescopic assembly 1 is retracted, the second end of the telescopic drive member 13 can also move in the strip hole until it returns to its initial position.

[0043] like Figures 1 to 3As shown, in an embodiment of the present application, to ensure the reliability of the transmission between the telescopic driving member 13 and the movable bracket 12 and the flexibility of relative movement. The telescopic driving member 13 includes a limiting member 131. The limiting member 131 is connected to the second end of the telescopic driving member 13. The limiting member 131 is clamped on both sides of the strip-shaped hole and there is a movable gap between the limiting member 131 and the movable bracket 12, which not only ensures the stability of the transmission but also endows the flexibility of relative movement. When the telescopic driving member 13 contracts, the limiting member 131 on one side of the strip-shaped hole contacts the movable bracket 12 and drives the movable bracket 12 to retract; conversely, when the telescopic driving member 13 extends, the limiting member 131 on the other side of the strip-shaped hole contacts the movable bracket 12 and pushes the movable bracket 12 to extend. The limiting member 131 may specifically be a locknut with a nylon lining. During assembly, the locknut is tightened to have a certain gap from the mounting surface of the movable bracket 12 to facilitate the relative movement between the telescopic driving member 13 and the movable bracket 12. Since the telescopic driving member 13 has a certain range of movement relative to the movable bracket 12, the piston rod of the telescopic driving member 13 mainly bears axial thrust, reducing the eccentricity of the telescopic driving member 13. This not only improves the working stability of the telescopic driving member 13 but also ensures the stable operation of the connecting member connected thereto, effectively avoiding the jamming problem of the telescopic driving member 13.

[0044] As Figure 5 shown, in an embodiment of the present application, the wheel brush telescopic assembly 1 further includes a first guide wheel group 14 and a second guide wheel group 15. Specifically, the first guide wheel group 14 is connected to the front end of the fixed bracket 11, and the second guide wheel group 15 is connected to the rear end of the movable bracket 12. Both sides of the fixed bracket 11 are U-shaped guide grooves, providing a rolling track for the second guide wheel group 15 so that it can move smoothly along the guide groove during the telescopic process. At the same time, in order to maintain the stability and balance of the movable bracket 12, both sides thereof are also bent into a U-shaped structure, providing a corresponding rolling space for the first guide wheel group 14. When the wheel brush telescopic assembly 1 extends, the first guide wheel group 14 and the second guide wheel group 15 will approach each other and jointly bear the tensile force to ensure the smooth extension of the assembly. On the contrary, when the wheel brush telescopic assembly 1 shortens, the two guide wheel groups will move away from each other to provide the necessary space for the contraction of the assembly. It is worth mentioning that, in order to further enhance the balance and stability of the wheel brush telescopic assembly 1, the first guide wheel group 14 is provided on both sides of the fixed bracket 11. Similarly, the second guide wheel group 15 is also equipped on both sides of the movable bracket 12. The design of this double guide wheel system not only improves the load-bearing capacity of the assembly but also makes it more stable and smooth during the telescopic process. Finally, in order to ensure the smooth telescopic movement of the wheel brush telescopic assembly 1, an appropriate gap is left between the first guide wheel group 14 and the second guide wheel group 15 and the U-shaped groove.

[0045] As Figure 3As shown, in an embodiment of the present application, a first flexible limit protrusion 111 is provided at the first end of the fixed bracket 11, and a second flexible limit protrusion 112 is provided at the second end of the fixed bracket 11. A third limit protrusion 121 is provided on the movable bracket 12. When the wheel brush telescopic assembly 1 retracts to the limit position, the third limit protrusion 121 contacts the first flexible limit protrusion 111. Through the flexible material of the first flexible limit protrusion 111, buffering is effectively achieved, the noise generated due to movement impact is reduced, and the service life of the assembly is extended. When the wheel brush telescopic assembly 1 extends to the limit position, the third limit protrusion 121 contacts the second flexible limit protrusion 112. Through the flexible material of the second flexible limit protrusion 112, buffering can also be effectively achieved, the noise generated due to movement impact is reduced, and the service life of the assembly is extended.

[0046] As Figure 3 and Figure 4 shown, in an embodiment of the present application, the wheel brush rotating assembly 2 includes a rotation driving member 21, a transmission shaft 22, a water supply sleeve 23, and a nozzle 24. The rotation driving member 21 is installed on the movable bracket 12. The rotation driving member 21 serves as the power source of the entire assembly, and its specific implementation form is a reduction motor. One end of the transmission shaft 22 is drivingly connected to the rotation driving member 21 through a coupling. The other end of the transmission shaft 22 is connected to the wheel brush 3, and a water supply sleeve 23 is sleeved outside the transmission shaft 22. The water supply sleeve 23 and the transmission shaft 22 are connected through bearings to achieve relative rotation between the two. Specifically, bearings are provided at both ends of the water supply sleeve 23. The water supply sleeve 23 also has a joint for connecting an external water pipe to continuously supply water to the wheel brush 3. A water supply channel is designed inside the transmission shaft 22. One end of the water supply channel communicates with the water supply sleeve 23, and the other end of the water supply channel communicates with the nozzle 24 through a pipe. The nozzle 24 is provided on the wheel brush 3 and rotates synchronously with the wheel brush 3. It should be noted that the nozzle 24 being provided on the wheel brush 3 should include that the nozzle 24 is indirectly connected to the wheel brush 3 through a water pipe. One end of the water pipe communicates with the water supply channel, and the other end of the water pipe is connected to the wheel brush 3 and is installed with the nozzle 24; or, a water guiding hole / flow channel communicating with the water supply channel is provided on the wheel brush 3, and the nozzle 24 is directly installed on the wheel brush 3 and communicates with the water guiding hole / flow channel. When the wheel brush 3 rotates, the water supply sleeve 23 fixed to the outer ring of the bearing remains stationary, and the rotating shaft 7 connected to the inner ring of the bearing rotates. The water supply sequentially passes through the joint, the water supply sleeve 23, and the water supply channel of the transmission shaft 22, and finally sprays out from the nozzle 24. Due to the synchronous rotation of the nozzle 24 and the wheel brush 3, the sprayed water flow can directly act on the surface to be cleaned without being blocked by the wheel disc of the wheel brush 3, thereby improving the effective contact rate of the water spraying and making the cleaning work more efficient and thorough.

[0047] As Figure 3 and Figure 4As shown, in an embodiment of the present application, the water supply channel includes an annular groove 221 extending circumferentially along the transmission shaft 22 and a straight hole 222 extending axially along the transmission shaft 22. The annular groove 221 is used to ensure that water can still be supplied to the water supply channel under the condition that the rotating shaft 7 rotates relative to the water supply sleeve 23. One end of the straight hole 222 communicates with the annular groove 221, and the other end of the straight hole 222 communicates with the nozzle 24. The water supply sleeve 23 is sleeved on the outer periphery of the annular groove 221. In order to cope with possible water leakage problems, multiple groups of sealing rings are installed on both sides of the water supply sleeve 23 to enhance the sealing performance of the water supply sleeve 23.

[0048] As Figure 3 and Figure 4 shown, in an embodiment of the present application, the wheel brush 3 includes a flushing hole 31 penetrating along the thickness direction. The nozzle 24 is arranged at one end of the flushing hole 31 to ensure that the water sprayed from the nozzle 24 can directly reach the wheel surface for flushing.

[0049] As Figure 3 and Figure 4 shown, in an embodiment of the present application, the number of nozzles 24 is multiple, and the nozzles 24 are arranged at intervals of each other on the wheel brush 3. When the wheel brush 3 starts to work, multiple nozzles 24 will simultaneously spray strong and uniform water flows to comprehensively flush the wheel surface. By reasonably setting the number and spacing of the nozzles 24, it is also possible to effectively save energy and water resources while ensuring the cleaning effect.

[0050] The present application also provides a car washer, which includes, in addition to the car washer wheel brush mechanism mainly used for cleaning the car wheels in the above embodiment, a car washer cross brush mechanism for cleaning the top surface of the car, a vertical brush mechanism for cleaning the side surface of the car, a spraying system for spraying cleaning liquid, and a traveling system for pushing the car to move, etc. Since the car washer includes the car washer wheel brush mechanism in the above embodiment, it also has the advantages of the above car washer wheel brush mechanism.

[0051] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A wheel brush mechanism for a car washing machine, characterized in that: include: A wheel brush telescopic assembly (1), comprising a fixed bracket (11), a movable bracket (12) and a telescopic driving member (13), wherein the movable bracket (12) is slidably connected to the fixed bracket (11), a first end of the telescopic driving member (13) is connected to the fixed bracket (11), and a second end of the telescopic driving member (13) is movably connected to the movable bracket (12); A wheel brush rotating assembly (2) connected to the movable bracket (12); The wheel brush (3) is mounted on the wheel brush rotating assembly (2), and the wheel brush rotating assembly (2) is used to drive the wheel brush (3) to rotate.

2. The wheel brush mechanism of a car washing machine as claimed in claim 1, characterized in that: The movable bracket (12) is provided with a strip-shaped hole, and the second end of the telescopic driving member (13) is passed through the strip-shaped hole and is movably connected to the strip-shaped hole.

3. The wheel brush mechanism of a car washing machine as claimed in claim 2, characterized in that: The telescopic driving member (13) comprises a limiting member (131), wherein the limiting member (131) is connected to the second end of the telescopic driving member (13), and the limiting member (131) is clamped on both sides of the strip-shaped hole, and a movable gap is left between the limiting member (131) and the movable bracket (12).

4. The wheel brush mechanism of a car washing machine as claimed in claim 1, characterized in that: The wheel brush telescopic assembly (1) further comprises a first guide wheel group (14) and a second guide wheel group (15); the first guide wheel group (14) is connected to the fixed bracket (11) and is in rolling contact with the movable bracket (12); the second guide wheel group (15) is connected to the movable bracket (12) and is in rolling contact with the fixed bracket (11); when the wheel brush telescopic assembly (1) is extended, the first guide wheel group (14) and the second guide wheel group (15) approach each other; when the wheel brush telescopic assembly (1) is shortened, the first guide wheel group (14) and the second guide wheel group (15) move away from each other.

5. The wheel brush mechanism of a car washing machine according to any one of claims 1 to 4, characterized in that: The first end of the fixed bracket (11) is provided with a first flexible limiting protrusion (111), the second end of the fixed bracket (11) is provided with a second flexible limiting protrusion (112), and the movable bracket (12) is provided with a third limiting protrusion (121). When the wheel brush telescopic assembly (1) is retracted to an extreme position, the third limiting protrusion (121) contacts the first flexible limiting protrusion (111); when the wheel brush telescopic assembly (1) is extended to an extreme position, the third limiting protrusion (121) contacts the second flexible limiting protrusion (112).

6. The wheel brush mechanism of a car washer according to any one of claims 1 to 4, characterized in that: The wheel brush rotating assembly (2) comprises a rotating drive member (21), a transmission shaft (22), a water supply shaft sleeve (23) and a nozzle (24); the rotating drive member (21) is mounted on the movable bracket (12); one end of the transmission shaft (22) is drivingly connected to the rotating drive member (21); the other end of the transmission shaft (22) is connected to the wheel brush (3); the water supply shaft sleeve (23) is sleeved on the transmission shaft (22) and is rotationally connected to the transmission shaft (22); the nozzle (24) is arranged on the wheel brush (3); a water supply channel is provided in the transmission shaft (22); and the nozzle (24) is communicated with the water supply channel.

7. The wheel brush mechanism of a car washer as claimed in claim 6, characterized in that: The water supply channel comprises an annular groove (221) extending circumferentially along the transmission shaft (22) and a straight hole (222) extending axially along the transmission shaft (22); the water supply shaft sleeve (23) is sleeved on the outer circumference of the annular groove (221); one end of the straight hole (222) is in communication with the annular groove (221); and the other end of the straight hole (222) is in communication with the nozzle (24).

8. The wheel brush mechanism of a car washer as claimed in claim 6, characterized in that: The wheel brush (3) comprises a flushing hole (31) which penetrates along the thickness direction, and the nozzle (24) is arranged at one end of the flushing hole (31).

9. The wheel brush mechanism of a car washer as claimed in claim 6, characterized in that: There are a plurality of nozzles (24), and the nozzles (24) are arranged on the wheel brush (3) at intervals from each other.

10. A car washing machine, characterized in that: It comprises a wheel brush mechanism for a car washing machine as claimed in any one of claims 1 to 9.

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