KR101541831B1 - Wheel washing device for vehicle - Google Patents

Abstract

To solve the problems, the present invention provides a wheel washing device for a vehicle comprising: multiple widthwise rails having a stopper capable of stopping front wheels in the front and installed in the widthwise direction of an entering vehicle; a washing base installed on both end parts of the widthwise rails in the lengthwise direction of the vehicle so that the entered vehicle can move in a widthwise direction, and gliding over the upper surface of the widthwise rails; a widthwise mover installed on the central position of the washing base to move the washing base in the widthwise direction of the vehicle; a detection means installed on one side surface of the widthwise mover to always maintain a constant distance by determining the approach positions of the vehicle and the washing base; a front wheel washer installed in front of the washing base to wash the front wheels of the entered vehicle; and a rear wheel washer installed behind the washing base to move to correspond to the wheelbase of the entered vehicle and washing rear wheels. Therefore, the front and rear wheel washers are enabled to correspond easily to wheels regardless of the kind of the vehicle or the entry state of the vehicle, and washing efficiency is maximized by modifying the rotating state of the brush structure of the front and rear wheel washers.

Description

WHEEL WASHING DEVICE FOR VEHICLE

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an automobile wheel cleaning apparatus, and more particularly, to an improved cleaning apparatus capable of easily cleaning a wheel holding a tire of an automobile regardless of the type of vehicle.

The outer surface of the automobile is designed to prevent the adsorption of contaminants due to the development of technology. However, since the foreign substance can not prevent the foreign substances from being adsorbed to the outer surface of the automobile, washing or washing Devices have been developed and used.

In addition, since it is difficult to maintain a clean state of a wheel of an automobile using only a cleaning device for removing foreign matter adsorbed on the outer surface of the automobile, many wheel cleaning devices for professionally cleaning the wheel of an automobile have been developed and used In fact.

A typical example of a wheel cleaning apparatus for removing foreign matter adsorbed on the surface of a wheel and a tire of an automobile as described above will be described with reference to FIG.

The automotive wheel washing apparatus 1 to which the conventional technique is applied is provided with a base 5 having wheel grooves 4 formed on both sides thereof so as to stop the wheels 3 of the automobile 2 to be washed.

On both sides of the base 5, there are provided a wheel washing machine 7 having a plurality of washing brushes 6 rotated by driving means such as a motor so as to be able to wash the wheels of the automobile 2.

The wheel washer 7 includes an X-axis mover 8 for allowing the wheel to be cleaned while approaching and leaving in the width direction of the automobile 2, And a Y-axis shifter 9 for shifting the positions of the wheels located on the front and rear sides of the automobile 2, respectively.

Patent No. 10 - 0867930 - 0000 Patent No. 10 - 0947998 - 0000 Patent No. 10 - 1257582 - 0000 Patent No. 10 - 1358731 - 0000

The above-described conventional wheel cleaning apparatus for an automobile has a structure in which a front wheel of the automobile is first moved rearwardly with a pair of wheel washers on both sides, and then the rear wheel is cleaned. There is a disadvantage in that it takes much time to clean.

In many cases, such a wheel cleaning apparatus is installed in a gas station or a self-washing car. When the number of waiting vehicles increases due to a long cleaning time, the vehicle must wait in a narrow car space, It can also interfere with vehicle traffic.

If the deviation of the wheel washing apparatus in the width direction is large when the automobile enters, the wheel washing machine is moved in the direction of the wheel of the vehicle using the X-axis shifter so that the wheel and the brush are not in close contact with each other The deterioration of the cleaning force is prevented.

In addition, when the brush constituting the wheel washing machine is arranged in a circular shape, the wheel rotates and rubs against the surface of the wheel. If there is a simple friction with only the surface of the wheel, there is no problem in washing the wheel surface. The center portion of the brush is twisted by the rotational force, and the brush is stiff when the brush is concentrated in the center portion. Therefore, when there is friction with the wheel surface, the wheel is damaged, Other causes.

In addition, since the wheels can be normally positioned in the wheel grooves provided on both sides of the base, cleaning operations can be performed. Therefore, in the case of the elderly or female driver who is inexperienced, the wheel must be normally positioned in the narrow groove of the wheel. Which is a cause of deteriorating the use of the wheel cleaning device which can not easily attempt to enter the wheel cleaning device.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a vehicle including a plurality of width direction rails provided in a width direction of an automobile having a stopper for stopping a front wheel of a vehicle, A cleaning base installed in the longitudinal direction of the vehicle so as to be movable in the width direction of the automobile entering the both end portions and sliding the upper surface of the width direction rail; A width direction mover and sensing means for setting a proximity position of the car and the cleaning base to be installed at one side of the width direction mover to always maintain a constant distance; a front wheel installed in front of the cleaning base to clean A front wheel washing machine installed on the rear side of the washing base, To move to fit to the rear wheel consists of a washer for washing the rear wheel;

It is possible to easily match the front and rear wheel washing machine to the wheel irrespective of the vehicle type or the vehicle entering state and to achieve the object of maximizing the cleaning efficiency by changing the rotating state of the brush structure of the front and rear wheel washing machine.

The present invention improves the efficiency of the cleaning by improving the efficiency of the cleaning by improving the cleaning efficiency of the wheel in a short period of time regardless of the type of automobile or the deviation in the width direction in the entered state. Thereby preventing the wheel from being damaged while increasing the cleaning power and maximizing the utilization rate by preventing the user from burdening the vehicle to enter the car for washing the wheel.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a whole plan view showing an automotive wheel washing apparatus to which the technique of the present invention is applied. Fig.
2 is a side view showing an automotive wheel cleaning apparatus to which the technique of the present invention is applied;
FIG. 3 is a perspective view of a front wheel washing machine of an automotive wheel washing apparatus to which the technique of the present invention is applied; FIG.
FIG. 4 is a perspective view showing an example of a rear wheel washing machine of an automotive wheel washing apparatus to which the technique of the present invention is applied; FIG.
5 is a cross-sectional view taken along the line A-A of the rear wheel washing machine for an automotive wheel washing apparatus to which the technique of the present invention is applied.
6 is a cross-sectional view taken along the line B-B of the rear wheel washing machine for an automotive wheel washing apparatus to which the technique of the present invention is applied;
7 is a schematic view showing a gear portion of a front and a rear wheel washing machine for an automotive wheel washing apparatus to which the technique of the present invention is applied.
Fig. 8 is a view showing a configuration of an apparatus for extracting a width adjuster for an automotive wheel washing apparatus to which the technique of the present invention is applied; Fig.
FIG. 9 is a configuration view showing a state of use of an automotive wheel cleaning apparatus to which the technique of the present invention is applied. FIG.
10 is a block diagram showing an automotive wheel washing apparatus to which the prior art is applied.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic plan view of an automotive wheel cleaning apparatus to which the technique of the present invention is applied, FIG. 2 is a side view of a vehicle wheel cleaning apparatus to which the technique of the present invention is applied, and FIG. FIG. 4 is a perspective view of a rear wheel washing machine of an automotive wheel washing apparatus to which the technique of the present invention is applied, FIG. 5 is a perspective view of a wheel washing apparatus for a vehicle to which the technique of the present invention is applied, 6 is a cross-sectional view taken along the line B - B of the rear wheel washing machine for an automotive wheel washing apparatus, to which the technique of the present invention is applied, and FIG. 7 is a sectional view taken along the line A - FIG. 8 is a schematic view showing a structure of a front and rear wheel washing machine taken out from the gear portion, FIG. 8 is a schematic view of a width variable device for an automotive wheel washing apparatus to which the technique of the present invention is applied, It is described using the state value with a configuration shown Fig.

The automotive wheel cleaning apparatus 100 to which the technique of the present invention is applied includes a conventional stopper capable of stopping the front wheel 102 of the automobile 101 in front of the ground (in the front wheel direction of the automobile when the automobile enters) And a plurality of width direction rails 103 are provided in the width direction of the automobile 101 entering the front and rear of the stopper.

It is preferable that the upper surface of the width direction rail 103 be filled with the ground so as to prevent rattling when the automobile 101 enters.

The washing base 105 is installed at both ends of the width direction rail 103 in the longitudinal direction of the automobile 101 so as to be movable in the width direction of the automobile 101 that has entered, A slide roller 106 is provided so as to be able to be connected to the upper surface of the width direction rail 103.

A width direction mover 107 is provided at an intermediate position of the cleaning base 105 so as to move the cleaning base 105 in the width direction of the vehicle 101. At both ends of the width direction rail 103, 105 are prevented from being detached from each other.

The width direction mover 107 is disposed between the end bracket 108 that is installed at both ends of the widthwise rail 103 at the central position and the center bracket 109 that is installed on the upper surface of the central portion of the cleaning base 105, So that the cleaning base 105 can be brought close to and away from the vehicle 101.

A sensing means 111 is provided on one side of the center bracket 109 to determine a proximity position between the automobile 101 and the cleaning base 105 so as to be able to stop at a constant distance.

The sensing means 111 may be provided with a proximity sensor to maintain the automobile 101 and the cleaning base 105 at a predetermined interval or may be provided with a touch sensor 112, ) Or the wheel, the movement of the cleaning base 105 may be stopped.

The touch sensor 112 always projects the rod holder 113 forward through the spring 114 to the rod holder 113 provided at the front of the center bracket 109 And the touch rod 115 is engaged.

The touch rod 115 is provided at the tip of the touch rod 115 and has a touch pad 116 connected to the car 101 or a wheel. And a limit pad 118, which can be connected to the pad 117.

Of course, it is a matter of course that the distance between the limit switch 117 and the limit pad 118 can be varied through adjustment so as to vary the degree of close contact with the vehicle or the type of the vehicle.

A front wheel washing machine 120 for washing the front wheel of the automobile 101 that has entered the washing base 105 is installed so as not to move in the front of the washing base 105, And the rear wheel washing machine 150 for moving the rear wheel to move the rear wheel.

The front wheel washing machine 120 has a drive box 122 fixed to an upper portion of a substantially ∩ shaped bracket 121 fixed to the front of the cleaning base 105, An integral driving means 123 is provided.

The driving shaft 124 is driven by the driving means 123 to project toward the cleaning base 105 and the driving force of the driving means 123 is transmitted to the end of the driving shaft 124, The brush 125 is mounted.

The drive shaft 124 is fixed at its middle portion with a driving small gear 126 that rotates together with the driving shaft 124. The driving small gear 126 is fixed to a drive gear 124 And is engaged with the reduction gear 128 fixed to the shaft 127.

The reduction gear 129 is connected to the front position drive shaft 124 of the small drive gear 126 on the front transmission shaft 127 of the reduction gear 128 so as to prevent the drive shaft 124 from rotating. Thereby engaging with the gear 130.

The driving gear 130 is mounted on the rear surface of the low speed plate 132 so as to prevent the rotation of the driving shaft 124 from being interfered with the driving shaft 124 via the bearing 131, And a plurality of low-speed brushes 133 are mounted on the front surface of the low-speed plate 132.

The rear wheel washing machine 150 is provided with a roughly ∩ shaped moving bracket 152 above the longitudinal rails 151 installed from the rear to the intermediate portion of the cleaning base 105, On both inner sides thereof, a moving roller 153 is provided so as to be slidably connected to the longitudinal rails 151.

A timing pulley 154 is installed on the moving roller 153 and is connected to a timing pulley 156 fixed to the shaft of the moving motor 155 mounted on the bottom surface of the moving bracket 152 by a timing belt 157, So that it can move in accordance with the size of the motor vehicle 101 entering and leaving the directional rail 151.

The control of the moving motor 155 is performed by a controller (not shown). It is a matter of course that when a pre-inputted automobile is selected, the motor can be moved in accordance with the motor vehicle, , And input, correction and deletion of automobile information will be free.

A drive unit 161 having a motor and a transmission is installed in the drive box 160 fixed to the upper part of the moving bracket 152 and the drive shaft 162 taken out from the drive unit 161 is connected to a cleaning base 105, and a high-speed brush 163, which rotates at a high speed, is mounted on the end of the drive shaft 162 as it receives the rotational force of the drive means 161 as it is.

The drive shaft 162 is fixed at its intermediate portion with a driving small gear 165 that rotates together with the driving shaft 162. The driving small gear 165 is fixed to a drive gear 162 To engage with the reduction gear 167 fixed to the shaft 166.

The speed reduction gear 168 is connected to the front position drive shaft 162 of the small drive gear 165 on the front transmission shaft 166 of the reduction gear gear 167. The drive gear 162 is mounted on the drive shaft 162, So as to engage with the gear 169.

The driving gear 169 is mounted on the rear surface of the low speed plate 171 so that the driving shaft 162 does not interfere with the rotation of the driving shaft 162 via the bearing 170 and the low speed plate 171 is connected to the driving shaft 162 And a plurality of low-speed brushes 172 are mounted on the front surface of the low-speed plate 171.

The high speed brushes 125 and 163 and the low speed brushes 133 and 172 are formed in such a manner that the bristles 176 are inserted into the brush body 175 in a substantially rectangular shape, The brush bristles 176 are prevented from concentrating on the central portion of the brush bristles 176, thereby eliminating the twisting phenomenon.

The low velocity broaching 133 and 172 may be formed by forming gears on the brush body 175 to rotate the high speed brushes 125 and 163 or to rotate the axis of the brush body 175 to a low speed plate 132 and 171 so as to rotate in the same or different direction as the high speed brushes 125 and 163 due to the rotation of the low speed plate 171 or to connect the respective low speed brushes 133 and 172 with the driving means, And the like.

The state of use of the automotive wheel cleaning apparatus 100 to which the technique of the present invention is applied will be described as follows.

If the front wheel 102 of the automobile 101 is obstructed by the stopper provided in the front when the automobile wheel cleaning apparatus 100 enters the automobile 101, the automobile 101 is stopped and the wheel is cleaned In a mode in which the user descends to operate the con- croller or the controller is operated in a state where the user is aboard the driver's seat window or the user operates the wheel cleaning apparatus 100 in such a manner that the manager operates the controller You.

That is, when the vehicle type inputted to the controller is selected, the rear wheel washing machine 150 is located at the intermediate position of the washing base 105, moves backward with respect to the front wheel washing machine 120 according to the selected model car, The transverse mover 107 is operated to move the front and rear wheel cleansers 120 and 150 in the width direction of the vehicle so as to be close to or concatenated with the front wheels and the rear wheels.

In this state, the driving means 123 and 161 constituting the front and rear wheel washing machines 102 and 150 are operated to rotate the high speed brushes 125 and 163 mounted on the driving shafts 124 and 162 at high speed and to rotate independently of the rotation of the driving shafts 124 and 162 The low speed brushes 133 and 172 installed on the low speed plates 132 and 171 rotating at a slower speed than the drive shafts 124 and 162 are rotated to rub against the surface of the wheel and the tire.

In this process, the detergent and water necessary for cleaning will be supplied to the wheels and tires or the front and rear wheel washers 120 and 150, and the brush bristles 176 ) Rubs against the surface of the wheel and the tire and can be cleaned while removing the foreign substance.

Particularly, since the brush body 175 is formed in a rectangular shape and the brush body 176 is embedded in the brush body 175, the center of the brush body 175 is kept still while the brush body 175 rotates, The shape of the brush or the shape of the brush is touched so that it is possible to increase the cleaning power while preventing the bristles 176 from being twisted.

The operation of the rear wheel washing machine 150 to move backward with respect to the front wheel washing machine 120 and stop according to the selected car is as follows.

When the vehicle type is selected through the controller, the rear wheel washing machine 150 located at the intermediate position of the washing base 105 is moved to the rear of the washing base 105 by the wheelbase of the corresponding vehicle type on the basis of the front wheel washing machine 120, After moving, it stops.

This is because the moving roller 153 mounted on the moving bracket 152 is seated on the longitudinal rail 151 provided on the upper surface of the cleaning base 105 in the longitudinal direction and the bottom surface of the moving bracket 152 Since the timing belt 157 is connected between the timing pulley 156 fixed to the shaft of the moving motor 155 provided on the moving roller 153 and the timing pulley 156 provided together with the moving roller 153, So that the moving bracket 152 can be moved along the longitudinal rails 151 by the reverse operation.

A process of keeping the washing base 105 equipped with the front and rear washing machines 120 and 150 by the width direction mover 107 in the width direction of the automobile to maintain a predetermined distance from the automobile is as follows.

When the automobile 101 enters the inside of the wheel washing apparatus 100, the width direction mover 107 operates to move the washing base 105 located on both sides of the automobile 101 along the width direction rail 103, ) And then stopped.

In this process, a uniform gap is maintained between the washing bases 105 on both sides according to the entering form of the automobile 101, and in the case of maintaining a gap in a biased state toward either one of the washing bases 105 However, in the present invention, the cleaning base 105 can always be stopped at a constant distance from both sides of the automobile 101 regardless of such an interval deviation.

When the pneumatic cylinder 110 installed between the center bracket 109 standing at the intermediate position of the cleaning base 105 and the end bracket 108 standing at both ends of the widthwise rail 103 at the intermediate position is stretched, The washing base 105 installed by connecting the sliding rollers 106 to the widthwise rails 103 is moved in the direction of the automobile 101. After the washing is completed, the pneumatic cylinder 110 is retracted, As shown in Fig.

In the process of extending the pneumatic cylinder 110 to bring the cleaning base 105 close to the automobile 101, the cleaning base 105 is moved by the sensing means 111, which is further provided on the center bracket 109, So that it is possible to maintain a constant interval at all times regardless of the interval when the automobile 101 comes in.

When the proximity sensor is installed on the center bracket 109, the sensing means 111 senses the set distance, so that the controller stops the operation of the pneumatic cylinder 110, and the touch sensor 112 The touch sensor 112 is brought into contact with the outer surface of the automobile 101 so that the operation of the pneumatic cylinder 110 can be stopped and stopped.

That is, when the washing base 105 is moved by the pneumatic cylinder 110 in the direction of the automobile 101, the load holding hole 113 provided in the center bracket 109 is pressed against the car 101 The touch rod 115 protruding in the direction of the touch rod 115 also moves together and when the touch pad 116 located at the tip of the touch rod 115 contacts the outer surface of the automobile 101, the touch rod 115 moves backward.

Then, when the limit pad 118 at the rear of the touch rod 115 touches the limit switch 117 provided at the rear of the center bracket 109, the controller senses this and stops the operation of the pneumatic cylinder 110 The cleaning base 105 can be stopped at the target position.

Of course, it is a matter of course that the interval between the automobile 101 and the cleaning base 105 can be freely adjusted by adjusting the interval at which the touch rod 115 can touch the limit switch 117.

The process of transmitting the power of the front and rear wheel washers 120 and 150 will be described in detail.

Since the power of the drive means 123 and 161 installed inside the drive boxes 122 and 160 is transmitted to the drive shafts 124 and 162, the high speed brushes 125 and 163 mounted at the ends of the drive shafts 124 and 162 rotate at a high speed.

The low speed plates 132 and 171 are rotated at a speed lower than the speed of the drive shafts 124 and 162. This is because the low speed gears 126 and 165 fixed to the drive shafts 124 and 162 rotate together with the drive shafts 124 and 162, The reduction gears 129 and 168 integrally formed with the reduction gears 128 and 167 are engaged with the reduction gears 128 and 167 fixed to the transmission shafts 127 and 166 provided at the side of the drive boxes 122 and 160, The speed of the low speed plates 132 and 171 is slower than the rotation speed of the drive shafts 124 and 162 because the speed of the low speed plates 132 and 171 is reduced by engaging with the driving gears 130 and 169 fixed to the rear surface of the low speed plates 132 and 171, It will be done.

The present invention as described above makes it possible to easily match the front and rear wheel washing machines with the wheels irrespective of the type of vehicle or the vehicle entering the vehicle and to maximize the cleaning efficiency by changing the rotation state of the brush structure of the front and rear wheel washers .

100; An automotive wheel cleaning apparatus 101; car
103; A width direction rail 105; Cleaning base
107; A width direction mover 110; Pneumatic cylinder
111; Sensing means 112; Touch sensor
120; Front wheel washers 122, 160; Drive box
123, 161; Driving means 124, 162; driving axle
125,163; High speed brushes 132 and 171; Low speed plate
133,172; Low speed brush 150; Rear wheel washing machine
151; A longitudinal rail 152; Moving Bracket
153; A moving roller 155; Moving motor

Claims (7)

A plurality of widthwise rails (103) provided in a width direction of the entering vehicle (101) with a stopper capable of stopping the front wheel (102) of the vehicle (101) in front;
A washing base 105 installed in the longitudinal direction of the automobile 101 and sliding on the upper surface of the width direction rail 103 so as to be movable in the width direction of the automobile 101 entering both end portions of the width direction rail 103 )Wow;
A width direction mover 107 installed at an intermediate position of the cleaning base 105 to move the cleaning base 105 in the width direction of the vehicle 101;
A sensing means 111 installed on one side of the transverse mover 107 to determine a proximate position of the car 101 and the cleaning base 105 to maintain a constant distance at all times;
A front wheel washing machine 120 installed in front of the washing base 105 to wash the front wheel of the entering car 101;
And a rear wheel washing machine (150) installed at the rear of the washing base (105) to move in accordance with the wheel load of the automobile (101) and wash the rear wheel. The method of claim 1, further comprising:
The sensing means 111 may be provided with a proximity sensor to maintain the car 101 and the cleaning base 105 at a predetermined interval;
Wherein the touch sensor (112) is provided to stop the movement of the cleaning base (105) when the touch sensor (112) reaches the predetermined distance in connection with the automobile (101) or the wheel. The method of claim 1, further comprising:
The front wheel washing machine 120 includes driving means 123 installed inside a driving box 122 fixed on a bracket 121 fixed to the front of the cleaning base 105;
A high speed brush 125 mounted on an end of a driving shaft 124 taken out from the driving means 123;
A driving small gear 126 which rotates together with the driving shaft 124 in the middle of the driving shaft 124;
A decelerating gear 128 fixed to a speed change shaft 127 provided in the side drive box 122 of the drive shaft 124 and meshing with the small drive gear 126;
A reduction gear 129 integrally formed with the reduction gear 128 and meshing with the drive gear 130 installed on the drive shaft 124 so as to prevent the rotation of the drive shaft 124;
The driving gear 130 is mounted on the rear surface of the low speed plate 132 so as to prevent the rotation of the driving shaft 124 so that the low speed plate 132 can be rotated at a slower speed than the driving shaft 124;
And a plurality of low speed brushes (133) are mounted on the front surface of the low speed plate (132). The method of claim 1, further comprising:
The rear wheel washing machine 150 includes a longitudinal rail 151 installed from the rear to an intermediate portion of the cleaning base 105;
A moving roller 153 slidably connected to the longitudinal rails 151 at both sides of the moving bracket 152 provided above the longitudinal rails 151;
A timing pulley 156 fixed to a shaft of a moving motor 155 mounted on a bottom surface of the moving bracket 152 is connected to a timing pulley 154 provided on the moving roller 153, A timing belt 157 which reciprocates along the direction rail 151;
A drive means (161) installed inside the drive box (160) fixed to the upper portion of the moving bracket (152);
A high speed brush 163 mounted on an end of a driving shaft 162 taken out from the driving means 161;
A drive gear 162 fixed to the drive shaft 162 and rotating together with the drive shaft 162;
A decelerating gear 167 which is fixed to a speed change shaft 166 provided in a lateral drive box 161 of the drive shaft 162 and engages with a small drive gear 165;
A reduction gear 168 integrally formed with the reduction gear 167 and adapted to be meshed with a drive gear 169 provided on the drive shaft 162 so as to prevent rotation of the drive shaft 162;
The driving gear 169 is mounted on the rear surface of the low speed plate 171 so as to prevent the rotation of the driving shaft 162 so that the low speed plate 171 can be rotated at a slower speed than the driving shaft 162;
Wherein a plurality of low speed brushes (172) are mounted on the front surface of the low speed plate (171). The method of claim 1, further comprising:
The width direction mover 107 includes an end bracket 108 which is erected at both ends of the width direction rail 103 at the center position;
And the center bracket 109 installed on the upper surface of the central portion of the cleaning base 105 is connected to the pneumatic cylinder 110 so that the cleaning base 105 can be moved toward and away from the vehicle 101 A wheel washing device for an automobile. 3. The method of claim 2,
The touch sensor 112 includes a touch rod 115 for coupling the rod holder 113 with the rod holder 113 provided at the front of the center bracket 109 via a spring 114 )Wow;
A touch pad 116 provided at the tip of the touch rod 115 to be connected to the automobile 101 or the wheel;
And a limit pad (118) provided at a rear end of the touch rod (115) and connected to a limit switch (117) provided at the rear of the center bracket (109). The method as claimed in claim 3 or 4,
The high speed brushes 125 and 163 and the low speed brushes 133 and 172 are installed in the rectangular brush body 175 to form a brush body 176. When the brush body 175 is rotated, The brush bristles 176 are prevented from concentrating on the central portion of the brush bristles 176, thereby eliminating the twist phenomenon.

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