Car washing brush and car washing machine

Abstract

To provide a car washing brush capable of achieving both of durability and quietness, and a car washing machine.SOLUTION: A car washing brush (1) for washing a car by rotational sliding comprises a shaft (10) and brush bodies. At least one of the brush bodies includes a plurality of foam resin sheets (21), and is an annular brush body (20) in which the foam resin sheets adjacent to each other at inside end parts overlap, and are bellow-folded and fixed to the shaft, and the foam resin sheets adjacent to each other at outside end parts overlap.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a car wash brush and a car washing machine.

Background Art

[0002] Some car wash brushes used in car washing machines for washing vehicles use a brush body made of foamed resin or non-woven fabric.

[0003] Patent Document 1 discloses a car wash brush using a cleaning body made of a composite material of an independent bubble foam and resin fibers, with a plurality of strip-shaped cleaning pieces formed at the tip.

[0004] Patent Document 2 discloses a car wash brush using a non-woven fabric piece having a corrugated cross-section folded along a fold line extending from a mounting base to a tip portion.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] A car wash brush using strip-shaped foamed resin brush pieces as described in Patent Document 1 produces a large car wash noise because the tip of the brush piece hits the vehicle to wash the car.

[0007] A car wash brush using a non-woven fabric piece having a shape as described in Patent Document 2 is excellent in quietness, but inferior in durability compared to a foamed resin brush piece.

[0008] An object of the present disclosure is to achieve both durability and quietness of a car wash brush.

Means for Solving the Problem

[0009] In order to solve the above problems, a car wash brush according to an aspect of the present invention is a car wash brush that cleans a vehicle by rotational sliding, and the car wash brush includes a shaft and a plurality of brush bodies arranged in the axial direction of the shaft. At least one of the brush bodies includes a plurality of foamed resin sheets arranged along the circumferential direction of the shaft. The plurality of foamed resin sheets are such that adjacent foamed resin sheets overlap at the inner ends, are bellows-folded and fixed to the shaft, and are an annular brush body in which adjacent foamed resin sheets overlap at the outer ends.

[0010] A car wash machine according to an aspect of the present invention includes the above car wash brush.

Advantages of the Invention

[0011] The car wash brush and the car wash machine according to an aspect of the present disclosure achieve both durability and quietness.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Modes for Carrying Out the Invention

[0013] 〔Embodiment 1〕 Hereinafter, the car washer 100 and the car wash brush 1 according to Embodiment 1 will be described with reference to FIGS. 1 to 4. FIG. 1 is a front view of the car washer 100.

[0014] (Car washer 100) The car washer 100 is a device for washing a vehicle. As shown in FIG. 1, the car washer 100 includes, for example, two frames 31 and a ceiling portion 30 that connects the upper ends of the two frames 31. The car washer 100 has a portal shape through which a vehicle can pass through a space 1S surrounded by the frame 11 and the ceiling portion 30.

[0015] The car washer 100 has wheels 32 at the lower part of each of the frames 31, for example, and by rotationally driving the wheels 32 by a driving unit (not shown), it moves along the rail R arranged on the ground to the depth side and the front side in FIG. 1. The rail R is formed toward the depth side and the front side in FIG. 1. Here, the car washer 100 performs washing on the vehicle in the space 1S while moving.

[0016] As one of the cleaning units, the car washer 100 includes a plurality of car wash brushes 1 that slide on the vehicle and perform brushing. The car wash brushes 1 included in the car washer 100 include, for example, a top brush 34, a side brush 35, and a rocker brush 36 that are each rotated by a rotation motor (not shown). The top brush 34 moves along the upper surface of the vehicle and cleans the upper surface of the vehicle. The side brush 35 and the rocker brush 36 clean both side surfaces of the vehicle. In particular, the rocker brush 36 is arranged below the side brush 35 and cleans the lower part of the side surface of the vehicle.

[0017] In addition, the car washer 100 is provided with a blower 38 that generates an air current to dry the vehicle. A top blower nozzle 39 and a side blower nozzle 40 are connected to the blower 38 as air blowing nozzles. The top blower nozzle 39 is provided at the upper center of the car washer 100 and blows air toward the ceiling surface of the vehicle. The side blower nozzle 40 is provided at both side portions of the car washer 100 and blows air toward the side surface of the vehicle. The car washer 100 dries the washed vehicle by the air blowing of the top blower nozzle 39 and the side blower nozzle 40. Note that the car washer 100 may blow air onto the lower surface of the vehicle by adjusting the position and air blowing angle of each air blowing nozzle so that the air blown from each air blowing nozzle wraps around to the lower surface of the vehicle.

[0018] In the drawings of this specification, for the sake of simplicity of illustration, the illustration of each device for washing a vehicle included in the above-described car washer 100 may be omitted. In addition, each device included in the car washer 100 shown in FIG. 1 is merely an example, and the car washer 100 may include, in addition to the above-described devices, devices for washing a vehicle including conventionally known configurations and devices for assisting the washing on the frame 31 or the ceiling portion 30.

[0019] An operation panel 33 is arranged on the front surface of one frame 31 of the car washer 100. The operation panel 33 is provided with operation buttons (not shown) for setting washing conditions, and accepts washing or sets washing conditions by the operation of a user who has gotten out of the vehicle, a car wash staff, etc., and operates the car washer 100 for maintenance.

[0020] Furthermore, the car washer 100 may be provided with a remote panel (not shown) for acquiring the washing conditions of the vehicle. The remote panel may be located on the rear side of the car washer 100 and may be arranged approximately along the moving direction of the car washer 100.

[0021] Furthermore, the car washer 100 includes a control unit 37 that controls the car washer 100. The control unit 37 controls the washing and drying of the vehicle by the car washer 100 by controlling the movement of the car washer 100 along the rail R and the operations of each part of the car washer 100.

[0022] As shown in FIG. 1, the control unit 37 may be provided in the car washer 100 or may be located outside the car washer 100. The control unit 37 may transmit and receive information to and from the car washer 100 or the remote panel through a communication device (not shown) and control the car washer 100. The control unit 37 is composed of a processor such as a CPU, for example, and each control is realized by executing a control program stored in a memory on the processor.

[0023] (Washing brush 1A) An exemplary embodiment of the washing brush 1 according to the present disclosure will be described with reference to FIG. 2. FIG. 2 is a side view of a washing brush 1A which is an example of the washing brush 1.

[0024] The washing brush 1A includes a shaft 10 and a plurality of brush bodies arranged in the axial direction of the shaft 10 for washing a vehicle. In the washing brush 1A, an annular brush body 20 is provided as the brush body. As shown in FIG. 2, all the brush bodies included in the washing brush 1A are annular brush bodies 20.

[0025] Next, the annular brush body 20 will be described with reference to FIG. 3. FIG. 3 is an upper perspective view of the annular brush body 20.

[0026] As shown in FIG. 3, the annular brush body 20 includes a plurality of foamed resin sheets 21. The foamed resin sheets 21 are arranged along the circumferential direction of the shaft 10. The foamed resin sheet 21 may be a sheet formed in a rectangular shape. By using a foamed resin sheet 21 formed in a rectangular shape instead of a dedicated shape, the manufacturing cost can be reduced. The annular brush body 20 shown in FIG. 3 is formed by overlapping four foamed resin sheets 21 in which a part of one side of a rectangle is bellows-folded. The number of foamed resin sheets 21 included in one annular brush body 20 is not limited to four, and may be three or more and five or less.

[0027] In FIG. 3, in order to explain the configuration of one annular brush body 20, an annular brush body 20 whose shape is maintained by connecting four foamed resin sheets 21 with fasteners 22 is shown. In the state shown in FIG. 3, the bellows-folded portions for three pleats are gathered by the fasteners 22 while the adjacent foamed resin sheets 21 are overlapped. In the car wash brush 1A, the portion gathered by the fasteners 22 may be fixed to the shaft 10 with a rivet (not shown). Alternatively, the portion gathered by the fasteners 22 may be fixed to the shaft 10 only with rivets without using the fasteners 22. That is, in the car wash brush 1A, the connecting portions that are bellows-folded so as to form a plurality of pleats while the adjacent foamed resin sheets 21 are overlapped are fixed to the shaft 10 with rivets.

[0028] In other words, for each of the foamed resin sheets 21, a part of the end portion on the shaft side is bellows-folded and fixed to the shaft 10. The annular brush body 20 may be fixed to the shaft 10 with a plurality of rivets. Also, a plurality of rivets may be arranged at each of the above connecting portions. The rivets can fix the foamed resin sheet 21 to the shaft 10 while holding the bellows from expanding. Note that the holding of the bellows and the attachment to the shaft 10 may use other known means other than rivets.

[0029] Next, with reference to FIG. 4, the relationship between adjacent foamed resin sheets 21 will be described. FIG. 4 is a schematic view of a cross section taken along line IV-IV shown in FIG. 3. For the sake of explanation, in FIG. 4, the retainer 22 is not shown, and it is a schematic view showing the overlapping state at the connecting portion. In FIGS. 3 and 4, the adjacent foamed resin sheets are referred to as a foamed resin sheet 21A and a foamed resin sheet 21B.

[0030] As shown in FIG. 4, the foamed resin sheet 21A and the foamed resin sheet 21B are each pleated and overlap at their inner ends. More specifically, the annular brush body 20 is pleated at the connection portion with the shaft 10, and adjacent foamed resin sheets 21 overlap by 0.5 or more crests. The number of crests of the pleats at the connection portion may be, for example, 3 or 4, and the overlap of adjacent foamed resin sheets at the connection portion may be, for example, 1 or 1.5 crests (one and a half crests).

[0031] Although the foamed resin sheet 21 is not suitable for sewing, by overlapping the foamed resin sheets 21 and arranging and fixing them in the circumferential direction of the shaft 10, the foamed resin sheet 21 can be formed into the annular brush body 20 without sewing.

[0032] Furthermore, since the foamed resin sheet 21 is made of foamed resin, the annular brush body 20 has better durability than a non-woven fabric brush body.

[0033] The overlap of adjacent foamed resin sheets at the connection portion is at least 0.5 or more crests, more preferably 1 or more and 3 or less crests, and even more preferably 1.5 crests. The so-called 1.5 crests overlap means a state where the end of the foamed resin sheet 21B reaches the second crest of the foamed resin sheet 21A as shown in FIG. 4.

[0034] Since adjacent foamed resin sheets 21 are fixed by rivets at the connection portion, the greater the number of overlapping crests, the higher the strength at the connection position. However, if the number of overlaps becomes too large and the thickness at the connection position becomes too large, fixing becomes difficult. When the overlap of adjacent foamed resin sheets 21 is 1 or more and 5 or less crests, the strength of the foamed resin sheet 21 at the fixed position can be ensured and fixing by rivets or the like is easy.

[0035] Next, with reference to FIG. 5, the relationship between adjacent foamed resin sheets 21 will be further described. FIG. 5 is a schematic view of a cross section taken along the V-V line shown in FIG. 3.

[0036] As shown in FIG. 5, the foamed resin sheet 21A and the foamed resin sheet 21B overlap at the outer ends. The overlap of adjacent foamed resin sheets at the outer ends may be, for example, 0.5 mountains or more. Since the adjacent foamed resin sheets overlap at the outer ends, in the rotational sliding operation, the contact between the annular brush body 20 and the vehicle body becomes continuous contact. As a result, the quietness is improved.

[0037] As the material of the foamed resin used for the foamed resin sheet 21, for example, polyethylene, ethylene vinyl acetate copolymer resin, etc. can be used. Since these materials are closed-cell foams with extremely fine bubbles and have a soft feel rich in flexibility, they can improve the quietness and reduce the risk of scratching the vehicle surface.

[0038] The apparent density of the foamed resin sheet 21 is 70 kg / m 3 or more and 130 kg / m 3 or less. The apparent density is the weight per unit volume of the foamed resin sheet 21. The volume of the foamed resin sheet 21 includes both the volume of the foamed resin itself that constitutes the foamed resin sheet 21 and the volume of the bubbles present in the sheet. When processed into the foamed resin sheet 21, if the apparent density is 70 kg / m 3 or more and 130 kg / m 3 or less, the density of the foamed resin itself is not particularly limited, and any foamed resin can be used. By setting the apparent density to 70 kg / m 3 or more and 130 kg / m 3 or less, the foamed resin sheet 21 can achieve both softness and resilience, so that the quietness can be improved and the durability can be improved.

[0039] The thickness of the foamed resin sheet 21 may be 1.5 mm or less. By using a sheet with a thickness of 1.5 mm or less, the processing during the formation of the annular brush body 20 such as a bellows fold becomes easier, and during car washing, the shape of the annular brush body 20 can more easily conform to the shape of the vehicle according to the shape of the vehicle, so that high detergency can be achieved.

[0040] In addition, within the range of 1.5 mm or less, one car wash brush 1A may include foamed resin sheets 21 having different thicknesses. For example, foamed resin sheets 21 having different thicknesses may be alternately arranged and fixed in the circumferential direction of the shaft 10 to form the annular brush body 20. More specifically, the thickness of the foamed resin sheet 21A shown in FIG. 4 may be 1.0 mm, and the thickness of the foamed resin sheet 21B may be 1.5 mm. Alternatively, the annular brush body 20 formed using only the 1.0 mm foamed resin sheet 21 and the annular brush body 20 formed using only the 1.5 mm foamed resin sheet 21 may be alternately arranged along the axial direction of the shaft 10 to form the car wash brush 1A.

[0041] For example, when the car wash brush 1A is formed with the thickness of all the foamed resin sheets 21 being 1.0 mm, due to the softness of the foamed resin sheet 21, the car wash brush 1A gets too close to the vehicle. Therefore, by alternately fixing the foamed resin sheets 21 having different thicknesses, it is possible to achieve both softness and repulsive force, so that the detergency can be improved and the durability can be improved.

[0042] The car wash brush 1A according to the present disclosure is a car wash brush that cleans a vehicle by rotational sliding, and includes a shaft 10 and a plurality of brush bodies arranged in the axial direction of the shaft 10. At least one of the brush bodies is an annular brush body 20. The annular brush body 20 includes a plurality of foamed resin sheets 21 arranged along the circumferential direction of the shaft 10. The plurality of foamed resin sheets 21 overlap with each other at the inner ends, and are folded in a bellows shape and fixed to the shaft 10. Also, the plurality of adjacent foamed resin sheets 21 overlap with each other at the outer ends. Adjacent foamed resin sheets 21 may overlap by 0.5 crests or more at the connection portion.

[0043] The car wash machine according to the present disclosure includes a car wash brush in which at least one of the brush bodies is an annular brush body 20.

[0044] After the annular brush body 20 once contacts the outer surface of the vehicle, the continuous sheet slides to perform cleaning. A car wash brush provided with a strip-shaped brush body, which is often used as a brush body of a conventional car wash machine, has the brush body intermittently collide with the vehicle body, and cleans by hitting each time a large number of strip-shaped brushes come into contact. Since the car wash brush 1A according to the present disclosure includes the annular brush body 20, the way the brush hits is continuous compared to a car wash brush composed only of strip-shaped brush bodies, so the quietness is improved. Also, since the annular brush body 20 is formed from the foamed resin sheet 21, the durability is improved compared to a brush body using a non-woven fabric or the like.

[0045] Furthermore, since all the brush bodies of the car wash brush 1A are annular brush bodies 20, there is no hitting of the brush bodies during cleaning, and the quietness is further improved.

[0046] Another aspect of the car wash brush 1 according to the present invention will be described below. For the sake of convenience of explanation, members having the same functions as the members described in the above aspect are denoted by the same reference numerals, and the description thereof will not be repeated.

[0047] (Car wash brush 1B) An exemplary car wash brush 1B different from the car wash brush 1A will be described with reference to FIG. 6. FIG. 6 is a side view of the car wash brush 1B which is an example of the car wash brush 1. The car wash brush 1B includes a shaft 10, a plurality of annular brush bodies 20, and a strip-shaped brush body 24 with a tip portion divided into a plurality of parts.

[0048] According to this configuration, it is possible to improve the cleaning performance by arranging brush bodies of different shapes according to the shape of the vehicle to be cleaned, and furthermore, it is possible to form the car wash brush 1 according to the usage environment.

[0049] A plurality of annular brush bodies 20 are arranged along the axial direction of the shaft 10, and a plurality of strip-shaped brush bodies 24 are arranged along the circumferential direction and the axial direction of the shaft.

[0050] The strip-shaped brush body 24 is made of a foamed resin sheet, and at least a part of the foamed resin sheet is bellows-folded and fixed to the shaft 10. The tip portion of the foamed resin sheet on the side opposite to the side fixed to the shaft 10 of the strip-shaped brush body 24 is divided into a plurality of strips. The foamed resin sheets used for the strip-shaped brush body 24 may partially overlap each other. The foamed resin sheet constituting the strip-shaped brush body 24 may use the same material as the foamed resin sheet 21 used for the annular brush body 20. Also, the strip-shaped brush body 24 may use known techniques.

[0051] The strip-shaped brush body 24 and the annular brush body 20 rotate about the shaft 10 as a rotation axis and slide on the surface of the vehicle to wash the vehicle.

[0052] The thickness of the foamed resin sheet 21 of the annular brush body 20 may be thinner than the thickness of the foamed resin sheet constituting the strip-shaped brush body 24. Thereby, since the shape of the annular brush body 20 is more likely to match the shape of the vehicle according to the shape of the vehicle, high cleaning performance can be realized. Also, since the thickness of the foamed resin sheet constituting the strip-shaped brush body 24 is relatively thick, the durability of the car wash brush 1 can be improved.

[0053] In the car wash brush 1B, the arrangement of the annular brush body 20 and the strip-shaped brush body 24 is not particularly limited. For example, as shown in FIG. 6, the strip-shaped brush body 24 may be provided at the end in the axial direction of the car wash brush 1B.

[0054] For example, during car washing, the end in the axial direction of the car wash brush may come into contact with the components provided in the main body of the car washing machine 100, and the brush body may be torn. According to this configuration, by providing the strip-shaped brush body 24 that is difficult to reduce the cleaning performance even if torn at both ends, the durability of the car wash brush 1B can be improved. Note that it may be provided at only one end or both ends.

[0055] Alternatively, according to the cleaning part of the vehicle, the annular brush body 20 and the strip-shaped brush body 24 may be appropriately arranged at preferable positions. For example, when the car wash brush 1B is used as the side brush 35, the strip-shaped brush body 24 may be arranged near the position where it comes into contact with the side mirror of the vehicle. At this time, the cleaning performance around the side mirror with large unevenness can be improved by the repulsive force provided by the strip-shaped brush body 24.

[0056] In this way, the car wash brush 1B that simultaneously includes the annular brush body 20 and the strip-shaped brush body 24 can form a cleaning that matches the shape of the vehicle to be cleaned and a car wash brush 1 that matches the use environment.

[0057] (Car wash brush 1 of the car washing machine 100) An example of a preferable combination of the car wash brush 1 used in the car washing machine 100 will be illustrated.

[0058] In one aspect of the car washing machine 100, the car wash brush 1A in which all the brush bodies are the annular brush body 20 is used for the top brush 34, the side brush 35, and the rocker brush 36 of the car washing machine 100. According to this configuration, the quietness and durability can be improved without impairing the cleaning performance.

[0059] In a further aspect of the car wash machine 100, a car wash brush 1B having a strip-shaped brush body 24 at its end is used for the top brush 34 of the car wash machine 100. Both ends of the top brush 34 are located at parts where there is a high possibility of contact with other components provided in the car wash machine 100. According to this configuration, since the strip-shaped brush body 24 is provided at both ends where damage is likely to occur, damage to the brush is reduced and the soundproofing effect of the annular brush body 20 can be obtained.

[0060] In a further aspect of the car wash machine 100, a car wash brush 1B having a strip-shaped brush body 24 is used for the side brush 35 of the car wash machine 100 at a position near the contact with the side mirror of the vehicle. According to this configuration, the cleaning performance around the side mirror with large irregularities can be improved.

[0061] In a further aspect of the car wash machine 100, it includes a car wash brush 1A or 1B and other car wash brushes. The other car wash brushes include a shaft and a brush body. The brush body of the other car wash brushes is made of a foamed resin sheet whose tip is divided into a plurality of strips. For example, the brush body of the other car wash brushes may be the above-mentioned strip-shaped brush body 24. By making at least one of the car wash brushes provided in the car wash machine a car wash brush consisting only of a strip-shaped brush body, a car wash machine with high cleaning performance and excellent soundproofing can be realized.

[0062] For example, the car wash brush 1A may be used for the top brush 34 and the rocker brush 36 of the car wash machine 100, and a car wash brush consisting only of the strip-shaped brush body 24, which was often used as a brush for conventional car wash machines, may be used for the side brush 35. The side of the vehicle includes irregularities such as side mirrors. According to this configuration, a car wash machine with high cleaning performance and excellent soundproofing for the side of the vehicle can be realized.

[0063] Also in the car wash machine 100 exemplified above, the thickness of the foamed resin sheet 21 of the annular brush body 20 used for the car wash brushes 1A and 1B may be thinner than the thickness of the foamed resin sheets of the strip-shaped brush body 24 and the other car wash brushes. As a result, the shape of the annular brush body 20 can more easily conform to the shape of the vehicle according to the shape of the vehicle, so that high cleaning performance can be achieved. Since the thickness of the foamed resin sheet constituting the strip-shaped brush body 24 is relatively thick, the durability of the car wash brush 1 can be improved.

[0064] (Summary) The car wash brush according to Embodiment 1 of the present disclosure is a car wash brush that cleans a vehicle by rotational sliding, the car wash brush includes a shaft and a plurality of brush bodies arranged in the axial direction of the shaft, and at least one of the brush bodies includes a plurality of foamed resin sheets arranged along the circumferential direction of the shaft, the plurality of foamed resin sheets are such that the adjacent foamed resin sheets overlap at the inner ends and are fixed to the shaft by being bellows-folded, and are an annular brush body in which the adjacent foamed resin sheets overlap at the outer ends.

[0065] The car wash brush according to Embodiment 2 of the present disclosure is, in Embodiment 1, the thickness of the foamed resin sheet is 1.5 mm or less.

[0066] The car wash brush according to Embodiment 3 of the present disclosure is, in Embodiment 1 or 2, the apparent density of the foamed resin sheet is 70 kg / m 3 or more and 130 kg / m 3 or less.

[0067] The car wash brush according to Embodiment 4 of the present disclosure is, in any one of Embodiments 1 to 3, all of the brush bodies are the annular brush bodies.

[0068] The car wash brush according to Embodiment 5 of the present disclosure is, in any one of Embodiments 1 to 4, provided with a strip-shaped brush body whose tip is divided into a plurality.

[0069] The car wash brush according to aspect 6 of the present disclosure, in aspect 5, includes the strip-shaped brush body at an end portion in the axial direction of the car wash brush.

[0070] The car wash brush according to aspect 7 of the present disclosure, in aspect 5 or 6, the thickness of the foamed resin sheet of the annular brush is thinner than the thickness of the foamed resin sheet of the strip-shaped brush body.

[0071] The car washing machine according to aspect 8 of the present disclosure includes the car wash brush according to any one of aspects 1 to 7.

[0072] The car washing machine according to aspect 9 of the present disclosure includes a top brush for washing the upper surface of the vehicle, and as the top brush, includes the car wash brush according to aspect 6.

[0073] The car washing machine according to aspect 10 of the present disclosure includes the car wash brush according to any one of aspects 1 to 7 and another car wash brush for washing the vehicle by rotational sliding. The other car wash brush includes a shaft and a brush body, and the brush body is made of a foamed resin sheet whose tip portion is divided into a plurality of strips.

[0074] The car washing machine according to aspect 11 of the present disclosure, in aspect 10, the thickness of the foamed resin sheet of the annular brush body included in the car wash brush is thinner than the thickness of the foamed resin sheet included in the other car wash brush.

[0075] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention.

Explanation of reference numerals

[0076] 1 Car wash brush 1A Car wash brush 1B Car wash brush 10 Shaft 20 Annular brush body 21 Foamed resin sheet 24 strip-shaped brush body 100 car washer

Claims

1. A car wash brush that washes a vehicle by rotary sliding, the car wash brush comprising: A shaft, A plurality of brush bodies are arranged in the axial direction of the shaft, At least one of the brush bodies is A plurality of foamed resin sheets are arranged along a circumferential direction of the shaft, The car wash brush is an annular brush body in which adjacent foamed resin sheets are overlapped at their inner ends and folded in an accordion-like manner to be fixed to the shaft, and adjacent foamed resin sheets are overlapped at their outer ends.

2. 2. The car wash brush according to claim 1, wherein the foamed resin sheet has a thickness of 1.5 mm or less.

3. The apparent density of the foamed resin sheet is 70 kg / m ３ More than 130kg / m ３ 3. The car wash brush of claim 2, wherein:

4. The car wash brush of claim 1 , wherein all of said brush bodies are annular brush bodies.

5. The car wash brush according to claim 1 , comprising a rectangular brush body having a tip portion divided into a plurality of parts.

6. The car wash brush according to claim 5 , wherein the strip-shaped brush body is provided at an end portion in an axial direction of the car wash brush.

7. 6. The car wash brush according to claim 5, wherein the foamed resin sheet of the annular brush body has a thickness smaller than that of the foamed resin sheet of the rectangular brush body.

8. A car wash machine comprising the car wash brush according to any one of claims 1 to 7.

9. A top brush is provided for cleaning the top surface of the vehicle. A car wash machine comprising the car wash brush according to claim 6 as the top brush.

10. A car wash brush according to any one of claims 1 to 7, and another car wash brush that washes the vehicle by rotary sliding, The other car wash brush is: A brush body and a shaft are provided. The brush body in this car wash machine is made of a foamed resin sheet whose tip is divided into a plurality of rectangular pieces.

11. 11. The car wash machine according to claim 10, wherein a thickness of the foamed resin sheet of the annular brush body of the car wash brush is thinner than a thickness of the foamed resin sheet of the other car wash brush.

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