Car wash brushes and car wash machines

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] There is a car wash brush used for a car washing machine for washing a vehicle, which uses a brush body made of a foamed resin or a 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] The car wash brush using strip-shaped foamed resin brush pieces as described in Patent Document 1 generates a large car wash noise because the tip of the brush piece hits the vehicle to wash the car.

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

[0008] The present disclosure aims to achieve both durability and quietness of a car wash brush. [Means for solving the problem]

[0009] To solve the above problems, a car wash brush according to one aspect of the present invention is a car wash brush that cleans a vehicle by rotational sliding, the car wash brush comprises 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 annular brush bodies in which adjacent foamed resin sheets overlap at their inner ends and are fixed to the shaft by being folded in an accordion style, and adjacent foamed resin sheets overlap at their outer ends.

[0010] A car wash machine according to one aspect of the present invention is equipped with the above-mentioned car wash brush. [Effects of the Invention]

[0011] A car wash brush and car wash machine according to one aspect of this disclosure achieve both durability and quietness. [Brief explanation of the drawing]

[0012] [Figure 1] This is a front view of the car wash machine according to Embodiment 1. [Figure 2] This is a side view of the car wash brush according to Embodiment 1. [Figure 3] This is a top perspective view of an annular brush body according to Embodiment 1. [Figure 4] This is a schematic diagram of the cross-section along the line IV-IV shown in Figure 3. [Figure 5] Figure 3 is a schematic diagram of the cross-section along the VV line. [Figure 6] This is a side view of the car wash brush according to Embodiment 2. [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, for example, wheels 32 at the lower portions of the respective frames 31, and by rotationally driving the wheels 32 by a driving portion (not shown), it moves along a 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 wash machine 100 is provided with a blower 38 that generates an air current to dry the vehicle. The blower 38 is connected with a top blowing nozzle 39 and a side blowing nozzle 40 as blowing nozzles. The top blowing nozzle 39 is provided at the upper central part of the car wash machine 100 and blows air toward the ceiling surface of the vehicle. The side blowing nozzle 40 is provided at both side parts of the car wash machine 100 and blows air toward the side surface of the vehicle. The car wash machine 100 dries the washed vehicle by the blowing of the top blowing nozzle 39 and the side blowing nozzle 40. Incidentally, the car wash machine 100 may blow air to the lower surface of the vehicle by adjusting the position and blowing angle of each blowing nozzle, etc., so that the air blown from each 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, there may be cases where the illustration of each device for washing the vehicle included in the above-described car wash machine 100 is omitted. Also, each device included in the car wash machine 100 shown in FIG. 1 is merely an example, and the car wash machine 100 may include, in addition to the above-described devices, devices for washing the vehicle including conventionally known configurations, and devices for assisting such washing, provided in the frame 31 or the ceiling part 30.

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

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

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

[0022] As shown in Figure 1, the control unit 37 may be installed in the car wash machine 100, or it may be located outside the car wash machine 100. The control unit 37 may transmit and receive information between the car wash machine 100 or a remote panel using a communication device (not shown) or the like, and control the car wash machine 100. The control unit 37 is composed of a processor such as a CPU, and each control is realized by executing a control program stored in memory on the processor.

[0023] (Car wash brush 1A) An exemplary embodiment of the car wash brush 1 according to this disclosure will be explained with reference to Figure 2. Figure 2 is a side view of car wash brush 1A, which is an example of car wash brush 1.

[0024] The car wash brush 1A comprises a shaft 10 and multiple brush bodies arranged along the axial direction of the shaft 10 for washing the vehicle. The car wash brush 1A includes annular brush bodies 20 as brush bodies. As shown in Figure 2, all the brush bodies of the car wash brush 1A are annular brush bodies 20.

[0025] Next, the annular brush body 20 will be explained using Figure 3. Figure 3 is a top perspective view of the annular brush body 20.

[0026] As shown in Figure 3, the annular brush body 20 comprises 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 sheets 21 may be rectangular sheets. By using rectangular foamed resin sheets 21 instead of sheets formed in a special shape, manufacturing costs can be reduced. The annular brush body 20 shown in Figure 3 is formed by overlapping four foamed resin sheets 21, each with a portion of one side of the rectangle folded in an accordion style. The number of foamed resin sheets 21 included in one annular brush body 20 is not limited to four, but may be between three and five.

[0027] Figure 3 shows an annular brush body 20 in which four foamed resin sheets 21 are connected by fasteners 22 to explain the structure of one annular brush body 20. In the state shown in Figure 3, the bellows-folded portions of three ridges, with adjacent foamed resin sheets 21 overlapping, are held together by the fasteners 22. In the car wash brush 1A, the portions held together by the fasteners 22 may be fixed to the shaft 10 by rivets (not shown). Alternatively, the portions held together by the fasteners 22 may be fixed to the shaft 10 by rivets only, without using the fasteners 22. In other words, in the car wash brush 1A, the bellows-folded connecting portions, which form multiple ridges with adjacent foamed resin sheets 21 overlapping, are fixed to the shaft 10 by rivets.

[0028] In other words, each foamed resin sheet 21 is fixed to the shaft 10 by folding a portion of the shaft-side end into a bellows-like shape. The annular brush body 20 may be fixed to the shaft 10 by multiple rivets. Multiple rivets may also be placed at each of the above-mentioned connection points. The rivets can fix the foamed resin sheet 21 to the shaft 10 while holding the bellows to prevent them from spreading. Note that other known means besides rivets may be used to hold the bellows and attach them to the shaft 10.

[0029] Next, Figure 4 will be used to explain the relationship between adjacent foamed resin sheets 21. Figure 4 is a schematic diagram of a cross-section along the line IV-IV shown in Figure 3. For explanatory purposes, Figure 4 omits the illustration of the holder 22 and is a schematic diagram showing the overlap at the connection point. In Figures 3 and 4, adjacent foamed resin sheets are referred to as foamed resin sheet 21A and foamed resin sheet 21B.

[0030] As shown in Figure 4, the foamed resin sheets 21A and 21B are each folded in an accordion style and overlap at their inner ends. More specifically, the annular brush body 20 is folded in an accordion style at the connection point with the shaft 10, and adjacent foamed resin sheets 21 overlap each other by 0.5 folds or more. The number of folds in the accordion style at the connection point may be, for example, 3 or 4 folds, and the overlap of adjacent foamed resin sheets at the connection point may be, for example, 1 fold or 1.5 and a half folds (1 and a half folds).

[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 used to form an 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 superior durability compared to a nonwoven fabric brush body.

[0033] The overlap of adjacent foamed resin sheets at the connection point is at least 0.5 peaks, more preferably 1 to 3 peaks, and even more preferably 1.5 peaks. Here, 1.5 peaks of overlap refers to the state shown in Figure 4, where the edge of foamed resin sheet 21B reaches the second peak of foamed resin sheet 21A.

[0034] Since adjacent foamed resin sheets 21 are fixed together by rivets at the connection point, the greater the number of overlapping ridges, the stronger the connection point becomes. However, if the number of overlaps becomes too large and the thickness at the connection point becomes too great, fixing becomes difficult. When the overlap between adjacent foamed resin sheets 21 is between 1 and 5 ridges, the strength of the foamed resin sheets 21 at the fixing point can be ensured, and fixing with rivets or the like is easy.

[0035] Next, Figure 5 will be used to further explain the relationship between adjacent foamed resin sheets 21. Figure 5 is a schematic diagram of a cross-section along the VV line shown in Figure 3.

[0036] As shown in Figure 5, the foamed resin sheets 21A and 21B overlap at their outer edges. The overlap between adjacent foamed resin sheets at the outer edges may be, for example, 0.5 ridges or more. Because adjacent foamed resin sheets overlap at their outer edges, the contact between the annular brush body 20 and the vehicle body becomes continuous during rotational sliding. This improves noise reduction.

[0037] For example, polyethylene and ethylene vinyl acetate copolymer resin can be used as the foamed resin material for the foamed resin sheet 21. These materials are closed-cell bodies with extremely fine bubbles and have a soft feel due to their flexibility, which improves noise reduction and reduces the risk of scratching the vehicle surface.

[0038] The apparent density of the foamed resin sheet 21 is 70 kg / m³. 3 More than 130kg / m 3 The following may apply: 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 makes up the foamed resin sheet 21 and the volume of air bubbles present in the sheet. The apparent density of the foamed resin sheet 21 when processed is 70 kg / m³. 3 More than 130kg / m 3 The density of the foamed resin itself is not particularly limited, and any foamed resin can be used, provided that the apparent density is 70 kg / m³. 3 More than 130kg / m 3 By doing the following, the foamed resin sheet 21 can achieve both softness and resilience, thereby improving both noise reduction and durability.

[0039] The thickness of the foamed resin sheet 21 may be 1.5 mm or less. By using a sheet of 1.5 mm or less, processing during the formation of the annular brush body 20, such as bellows folding, becomes easier, and the shape of the annular brush body 20 can be more easily adapted to the shape of the vehicle during car washing, thereby achieving high cleaning performance.

[0040] Furthermore, a single car wash brush 1A may include foamed resin sheets 21 having different thicknesses, as long as the thickness is within the range of 1.5 mm or less. For example, an annular brush body 20 may be constructed by alternately arranging and fixing foamed resin sheets 21 of different thicknesses in the circumferential direction of the shaft 10. More specifically, the thickness of foamed resin sheet 21A shown in Figure 4 may be 1.0 mm, and the thickness of foamed resin sheet 21B may be 1.5 mm. Alternatively, an annular brush body 20 formed using only 1.0 mm foamed resin sheets 21 and an annular brush body 20 formed using only 1.5 mm foamed resin sheets 21 may be alternately arranged along the axial direction of the shaft 10 to form the car wash brush 1A.

[0041] For example, if the car wash brush 1A is formed by making all the foamed resin sheets 21 1.0 mm thick, the car wash brush 1A will get too close to the vehicle due to the softness of the foamed resin sheets 21. Therefore, by fixing foamed resin sheets 21 of different thicknesses alternately, it is possible to achieve both softness and resilience, thereby improving cleaning performance and durability.

[0042] The car wash brush 1A according to this disclosure is a car wash brush that cleans a vehicle by rotational sliding, and comprises 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, and the plurality of foamed resin sheets 21 overlap each other at their inner ends and are folded in an accordion style and fixed to the shaft 10. In addition, the plurality of adjacent foamed resin sheets 21 also overlap each other at their outer ends. The adjacent foamed resin sheets 21 may overlap each other by 0.5 ridges or more at the connection portion.

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

[0044] The annular brush body 20 cleans the vehicle by sliding a series of sheets after it has made initial contact with the vehicle's exterior. Conventional car wash brushes, which are commonly used in car wash machines and consist of strip-shaped brushes, clean by intermittently colliding with the vehicle body, striking it repeatedly with each contact of the numerous strip-shaped brushes. The car wash brush 1A according to this disclosure, because it includes an annular brush body 20, provides a more continuous brush contact compared to car wash brushes composed only of strip-shaped brushes, resulting in improved quietness. Furthermore, since the annular brush body 20 is formed from a foamed resin sheet 21, its durability is improved compared to brushes that use nonwoven fabric or the like.

[0045] Furthermore, since all the brushes in the car wash brush 1A are annular brushes 20, there is no slamming of the brushes during washing, resulting in improved quietness.

[0046] Other embodiments of the car wash brush 1 according to the present invention are described below. For the sake of clarity, components having the same function as those described in the above embodiments will be denoted by the same reference numerals, and their descriptions will not be repeated.

[0047] (Car wash brush 1B) An exemplary car wash brush 1B, which differs from car wash brush 1A, will be described using Figure 6. Figure 6 is a side view of car wash brush 1B, which is an example of car wash brush 1. Car wash brush 1B comprises a shaft 10, a plurality of annular brush bodies 20, and a strip-shaped brush body 24 whose tip is divided into multiple sections.

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

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

[0050] The strip-shaped brush body 24 is made of a foamed resin sheet, and at least a portion of the foamed resin sheet is folded in an accordion style and fixed to the shaft 10. The tip 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 multiple strips. The foamed resin sheets used in the strip-shaped brush body 24 may partially overlap. The foamed resin sheets constituting the strip-shaped brush body 24 may be made of the same material as the foamed resin sheet 21 used in the annular brush body 20. In addition, the strip-shaped brush body 24 may use known technology.

[0051] The strip-shaped brush body 24 and the annular brush body 20 rotate around the shaft 10 as the axis of rotation and clean the vehicle by sliding against its surface.

[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. This allows the shape of the annular brush body 20 to conform more easily to the shape of the vehicle, thereby achieving high cleaning performance. In addition, the relatively thicker thickness of the foamed resin sheet constituting the strip-shaped brush body 24 improves the durability of the car wash brush 1.

[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 Figure 6, the strip-shaped brush body 24 may be provided at the axial end of the car wash brush 1B.

[0054] For example, during car washing, the axial ends of the car wash brush may come into contact with parts of the car wash machine 100 body, potentially causing the brush to tear. With this configuration, the durability of the car wash brush 1B can be improved by providing strip-shaped brush bodies 24 at both ends, which do not significantly reduce cleaning performance even if torn. Note that these may be provided at one end or at both ends.

[0055] Alternatively, the annular brush body 20 and the strip-shaped brush body 24 may be positioned in appropriate and preferred locations depending on the area of ​​the vehicle to be washed. For example, when the car wash brush 1B is used as a side brush 35, the strip-shaped brush body 24 may be positioned near the location where it contacts the vehicle's side mirror. In this case, the repulsive force of the strip-shaped brush body 24 can improve the cleaning performance around the side mirror, which has many irregularities.

[0056] In this way, the car wash brush 1B, which simultaneously has an annular brush body 20 and a strip-shaped brush body 24, can be configured to perform cleaning that is tailored to the shape of the vehicle being washed and to suit the usage environment.

[0057] (Car wash brush 1 of car wash machine 100) Examples of preferred combinations of car wash brushes 1 used in the car wash machine 100 are provided below.

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

[0059] In a further embodiment of the car wash machine 100, a car wash brush 1B equipped with strip-shaped brush bodies 24 at its ends is used as the top brush 34 of the car wash machine 100. Both ends of the top brush 34 are located in areas that are likely to come into contact with other parts of the car wash machine 100. With this configuration, since strip-shaped brush bodies 24 are provided at both ends, which are prone to damage, brush damage is reduced, and a noise reduction effect can be obtained from the annular brush body 20.

[0060] In a further embodiment of the car wash machine 100, a car wash brush 1B equipped with a strip-shaped brush body 24 near the position where it contacts the vehicle's side mirror is used as the side brush 35 of the car wash machine 100. This configuration improves the cleaning performance around the side mirror, which has many irregularities.

[0061] In a further embodiment of the car wash machine 100, the car wash machine comprises a car wash brush 1A or 1B and another car wash brush. The other car wash brush comprises a shaft and a brush body. The brush body of the other car wash brush consists of a foamed resin sheet whose tip is divided into multiple strips. For example, the brush body of the other car wash brush may be the strip-shaped brush body 24 described above. By making at least one of the car wash brushes in the car wash machine consist only of a strip-shaped brush body, a car wash machine with high cleaning performance and excellent quietness can be realized.

[0062] For example, the car wash brush 1A may be used for the top brush 34 and rocker brush 36 of the car wash machine 100, and a car wash brush consisting only of strip-shaped brush bodies 24, which has been commonly used as a brush for conventional car wash machines, may be used for the side brush 35. The side of a vehicle includes irregularities such as side mirrors. With this configuration, a car wash machine can be realized that has high cleaning performance on the side of the vehicle and excellent quietness.

[0063] In the car wash machine 100 illustrated above, the thickness of the foamed resin sheet 21 of the annular brush body 20 used in the car wash brushes 1A and 1B may be thinner than the thickness of the foamed resin sheet of the strip-shaped brush body 24 and the other car wash brushes. This makes it easier for the shape of the annular brush body 20 to conform to the shape of the vehicle, thereby achieving high cleaning performance, and the relatively thicker thickness of the foamed resin sheet constituting the strip-shaped brush body 24 improves the durability of the car wash brush 1.

[0064] (summary) A car wash brush according to Embodiment 1 of the present disclosure is a car wash brush for cleaning a vehicle by rotational sliding, the car wash brush comprises 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 an annular brush body in which adjacent foamed resin sheets overlap at their inner ends and are folded in an accordion manner and fixed to the shaft, and adjacent foamed resin sheets overlap at their outer ends.

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

[0066] The car wash brush according to Embodiment 3 of this disclosure, in Embodiment 1 or 2, has an apparent density of 70 kg / m³ of the foamed resin sheet. 3 More than 130kg / m 3 The following applies:

[0067] In the car wash brush according to aspect 4 of the present disclosure, in any one of aspects 1 to 3, all of the brush bodies are annular brush bodies.

[0068] A car wash brush according to aspect 5 of the present disclosure comprises a strip-shaped brush body whose tip is divided into multiple sections, in any one of aspects 1 to 4.

[0069] In embodiment 6 of the present disclosure, the car wash brush is provided with the strip-shaped brush body at the axial end of the car wash brush in embodiment 5.

[0070] In the car wash brush according to embodiment 7 of the present disclosure, in embodiment 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 wash machine according to aspect 8 of this disclosure comprises a car wash brush as described in any one of aspects 1 to 7.

[0072] The car wash machine according to aspect 9 of this disclosure is equipped with a top brush for washing the upper surface of a vehicle, and the top brush is equipped with the car wash brush described in aspect 6.

[0073] A car wash machine according to aspect 10 of the present disclosure comprises a car wash brush according to any one of aspects 1 to 7, and another car wash brush that cleans the vehicle by rotational sliding, wherein the other car wash brush comprises a shaft and a brush body, and the brush body consists of a foamed resin sheet whose tip is divided into a plurality of strips.

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

[0075] The present invention is not limited to the embodiments described above, and various modifications are possible within the scope of 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 Symbols]

[0076] 1. Car wash brush 1A Car wash brush 1B Car Wash Brush 10 shafts 20 Circular brush body 21. Foamed resin sheet 24 Strip-shaped brush body 100 car wash machine

Claims

1. A car wash brush that cleans a vehicle by rotational sliding motion, wherein the car wash brush is The shaft and The shaft comprises a plurality of brush bodies arranged in the axial direction of the shaft, At least one of the aforementioned brush bodies is It includes a plurality of foamed resin sheets arranged along the circumferential direction of the shaft, A car wash brush comprising a plurality of foamed resin sheets, each having an annular brush body in which adjacent foamed resin sheets overlap at their inner ends and are folded in an accordion-like manner and fixed to the shaft, and adjacent foamed resin sheets overlap at their outer ends.

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

3. The apparent density of the foamed resin sheet is 70 kg / m³. ３ More than 130kg / m ３ The car wash brush according to claim 2, which is as follows:

4. The car wash brush according to claim 1, wherein all of the brush bodies are annular brush bodies.

5. The car wash brush according to claim 1, comprising a strip-shaped brush body with a tip divided into multiple sections.

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

7. The car wash brush according to claim 5, wherein the thickness of the foamed resin sheet of the annular brush body is thinner than the thickness of the foamed resin sheet of the strip-shaped brush body.

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

9. Equipped with a top brush for cleaning the top surface of the vehicle, A car wash machine comprising the car wash brush described in 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 for cleaning the vehicle by rotational sliding, The other car wash brushes mentioned above are It comprises a shaft and a brush body. The car wash machine comprises a brush body made of a foamed resin sheet whose tip is divided into multiple strips.

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

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