JPH054263B2 - - Google Patents

Description

[Detailed Description of the Invention] A. Purpose of the Invention (1) Industrial Application Field The present invention has a frame equipped with a car washing device, particularly various processing devices for washing, drying, etc. on the surface of the car body. The present invention relates to a control device for a car wash apparatus that allows a frame and a vehicle to move relative to each other in the longitudinal direction of the vehicle.

(2) Prior art In the above-mentioned conventional device, if the vehicle and the frame are washed in a state where the relative positional relationship is inappropriate for car washing, there is a risk that the vehicle and the frame etc. may be damaged or damaged. Conventionally, workers visually checked the relative positional relationship between the vehicle and the frame.

(3) Problems to be Solved by the Invention The above-mentioned visual check by the worker is troublesome and incomplete, so a detection device detects that the relative positional relationship between the vehicle and the frame is inappropriate for car washing. , it is conceivable to automatically stop the relative movement between the vehicle and the frame in response to this detection.

In this case, the above-mentioned detection device includes a first type in which a detection means such as a detection rod is brought into mechanical contact with the vehicle body surface, and a second type in which a photoelectric switch is used.
As shown in FIG. In the first type, there is a risk of damage to the car body surface due to the detection device, and in the second type, although there is no risk of damage to the car body surface, the lenses of the projector and receiver may be exposed to washing water splashed during car washing. There is a risk of fogging due to adhesion of dirt and grime, which may cause malfunctions, and maintenance and inspection are troublesome.

Furthermore, with the third type, although the above problems can be solved, the sound waves traveling from the transmitter a to the receiver b are Since the vehicle can move non-linearly along f, it becomes difficult to accurately detect the surface position of the vehicle V (in the case of FIG. 6, the height position of the top surface f). Therefore, taking into account the detection error, it is necessary to set a large limit distance between the frame, etc. and the surface position of the vehicle (the reference distance for automatically stopping the relative movement between the frame and the vehicle). As shown by the two-dot chain line in FIG. 6, there is a problem in that the size of the device increases accordingly.

The present invention has been proposed in view of the above, and an object of the present invention is to provide a control device for a car wash device that can solve all of the above problems.

B. Structure of the Invention (1) Means for Solving the Problems In order to achieve the above object, the present invention has a frame equipped with various processing devices that perform processing such as washing and drying on the surface of the vehicle body. A car washing device that allows a vehicle to move relative to the vehicle in the longitudinal direction of the vehicle, including a reflection type ultrasonic detection device that detects the distance to the vehicle body surface by reflecting sound waves from the vehicle body surface. A positional relationship detection device capable of detecting that the vehicle and the frame are in a relative positional relationship inappropriate for car washing based on distance, and stopping the relative movement in response to a detection signal outputted by the positional relationship detection device. It is characterized by comprising a control means.

(2) Effect When the frame and the vehicle are moved relative to each other in order to perform various treatments related to car washing on the body surface,
When the positional relationship detection device detects that the relative positional relationship between the two is inappropriate for car washing, it can automatically stop the relative movement in response to the detection signal, so that the relative movement continues. By doing so, inconveniences such as damage or breakage to the vehicle, frame, etc. can be avoided.

In particular, the positional relationship detection device has a reflection type ultrasonic detection device that detects the distance to the vehicle body surface by reflecting sound waves on the vehicle body surface, and based on the detected distance, the vehicle and the frame are determined to be unsuitable for car washing. Since it is designed to detect that there is an appropriate relative positional relationship, there is no need to mechanically contact a detection means such as a detection rod with the vehicle surface during detection, and there is no need for the vehicle surface to be detected to bulge. Since the surface position can be detected accurately even when the frame is in a state of (reference distance)
There is no need to set it large.

(3) Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a schematic side view of a car washing device equipped with the device of the present invention. In FIG. 1, a gate-shaped traveling frame 1 is mounted on a traveling rail 2 laid on the ground so as to be movable via a traveling wheel 3 pivotally supported thereon. This portal-shaped traveling frame 1 supports a top rotating brush 4 and a pair of side rotating brushes 5, 5 as a processing device.

The upper rotating brush 4 is attached to the gate-shaped traveling frame 1.
It is swingably supported via a swinging arm 7 on a horizontal shaft 6 horizontally mounted on the swinging arm 7, and is rotationally driven by a motor 8 provided on the swinging arm 7 via an electric mechanism in the swinging arm 7.
It is possible to contact the upper surface of the vehicle body and brush the surface. A sprocket 9 is fixed to the horizontal shaft 6, and another sprocket 11 is supported so as to freely rotate on an intermediate shaft 10 fixed to the gate-shaped traveling frame 1 below the horizontal shaft 6. An endless chain 12 is suspended between the sprockets 9 and 11. A mounting bracket 13 is fixed in the middle of the endless chain 12, and the upper end of an air cylinder 14 whose lower end is pivotally supported 14' on the gate-shaped traveling frame 1 is connected to the mounting bracket 13. Therefore, the air cylinder 14
By applying pressure, the upper rotating brush 4 can be held in the upper retracted position as shown by the chain line in FIG. Further, when the air cylinder 14 is in an inoperative state, the upper rotating brush 4 can freely swing back and forth with respect to the gate-shaped traveling frame 1 about the horizontal shaft 6.

At the rear of the gate-type traveling frame 1, the pair of side rotating brushes 5, 5 are suspended, that is, a pair of movable frames 16, 16 are slidably engaged, and the vertical shaft 1 has a pair of side rotating brushes 5, 5 suspended from the movable frames 16, 16.
7 and 17 are attached, and each moving frame 16 and vertical shaft 17 can swing in the traveling direction of the gate-shaped traveling frame 1 using the support shaft 18 of the guide rail 15 as a fulcrum. A prime mover 19 is supported by each moving frame 16, and this prime mover 19 controls the side rotating brush 5.
can be rotated. The pair of side rotating brushes 5, 5 are controlled to be able to move to open and close along the guide rail 15, and
Both sides and back can be cleaned by brushing. The supporting and operating mechanisms of the upper surface and the pair of side rotating brushes 4 and 5, 5 are conventionally known mechanisms, and detailed explanations thereof will be omitted.

The front part of the gate-type traveling frame 1 is equipped with a drying device D. That is, on both sides of the gate-type traveling frame 1, there are a pair of side blowing nozzles 21 as processing devices that open inward. .
The pivot 2 can be raised and lowered via a parallel link mechanism 24.
5 and 26, and the parallel link mechanism 24 is controlled to rotate in the vertical direction around pivot points 25 and 26 by the telescopic operation of the lifting cylinder 27. These side and top blower nols 21, 21 and 22 are connected to blowers 2 installed at the lower ends of both sides of the gate-shaped traveling frame 1.
It is connected to 3. Since this drying device D also has a conventionally known structure, detailed explanation thereof will be omitted.

A rinsing water injection device R as a processing device is provided outside the side rotating brushes 5, 5 of the gate-shaped traveling frame 1, and is capable of injecting rinsing water onto the vehicle body surface. Next, the structure of this rinsing water injection device R will be explained mainly with reference to FIG. The rinsing water injection pipe 31 is disposed across the gate-shaped running frame 1, and a plurality of nozzles 32 with their nozzles facing inward of the gate-shaped running frame 1 are provided at intervals. A solenoid valve 3 is installed in the middle of the rinse water injection pipe 31.
A rinse water supply pipe 34 is connected through the solenoid valve 33, and this rinse water supply pipe 34 is connected to a water pump P supported by the portal traveling frame 1.
By opening the valve, fresh water can be injected from the nozzle 32.

Further, the support frame 28 is provided with a wax coating device W as a processing device inside the rinsing water injection device R. This wax applicator W
has a gate-shaped water-based wax injection pipe 37 disposed approximately parallel to the rinsing water injection pipe 31, and the water-based wax injection pipe 37 is provided with a gate-shaped traveling frame 1.
A plurality of nozzles 38 with their nozzles facing inward are provided at intervals. A water-based wax supply pipe 39 is connected in the middle of the water-based wax injection pipe 37,
This supply pipe 39 is connected to an ejector 40 and a solenoid valve 41.
The water supply pipe 42 is connected to a water pump P via the water supply pipe 42 . A wax stock solution supply pipe 43 connected to the wax stance T is connected to the ejector 40. Therefore, when the solenoid valve 41 is opened after the water pump P is driven, the pressure water reaches the ejector 40, where the aqueous wax stock solution is sucked from the wax stock solution supply pipe 43 due to the ejector effect, and the aqueous wax mixed with water is Wax can be injected from a plurality of nozzles 38.

Further, in the gate-shaped traveling frame 1, between the upper rotating brush 4 and the pair of side rotating brushes 5, 5, there is provided a cleaning water injection device C as a processing device capable of injecting cleaning water onto the vehicle body surface of the vehicle. ing.
This cleaning water injection device C, like the wax injection device W, has a gate-shaped cleaning water injection pipe 45 disposed across the gate-shaped traveling frame 1, and this cleaning water injection pipe 45 is connected to the portal-shaped traveling frame. It is constructed by providing a plurality of nozzles 46 with their nozzles facing inward at intervals. The cleaning water injection pipe 45 is connected to a water supply pipe 47 connected to a water supply source S such as a tap, and a solenoid valve 48 is inserted in the middle of the water supply pipe 47, and when the solenoid valve 48 opens, the nozzle 46 More cleaning water is sprayed.

Further, above the front part of the gate-shaped traveling frame 1, there is a positional relationship according to the present invention that detects the body position and vehicle height of the vehicle V to be washed or polished and sends the information to a car wash control circuit 59 as a control means. Detection device A as a detection device is installed, and the following fourth and fifth detection devices are installed.
The configuration of this detection device A will be explained with reference to the drawings.

At the front upper part of the gate-shaped traveling frame 1, there is a transmitter section 52 that receives pulsed ultrasonic waves transmitted from a transmitter circuit 51 and emits them toward the upper surface of the vehicle body;
Receiving sections 53 that receive reflected waves from the vehicle body surface are provided close to each other, and the reflected ultrasonic waves received by the receiving section 53 are sent to a receiving circuit 54, where the reflected ultrasonic waves are emitted from the transmitting section 52. If it is an ultrasonic wave emitted from the transmitter 52, it is sent to the arithmetic circuit 55. The arithmetic circuit 55 simultaneously receives the ultrasonic waves when the transmitter circuit 51 transmits the ultrasonic waves, and uses the transmitter 52 or the receiver due to the difference in reception time between the ultrasonic waves from the transmitter circuit 51 and the reflected ultrasonic waves from the receiver circuit 54. 53 to a reflecting object such as a vehicle body surface, and outputs a voltage signal that increases in proportion to the distance to the first to third comparison circuits 5.
Send to 6, 57, 58. The transmitter 52, the receiver 53, the transmitter circuit 51, the receiver circuit 54, and the arithmetic circuit 55 cooperate with each other to configure the reflection-type ultrasonic detection device 50.

Each of the comparison circuits 56, 57, and 58 compares the voltage signal output from the arithmetic circuit 55 of the ultrasonic detection device 50 with a plurality of reference voltages corresponding to predetermined distances, and determines whether the voltage signal corresponds to the corresponding one. When the voltage is equal to or lower than a reference voltage, output signals are sent to a car wash control circuit 59, which will be described later. a certain low height above the ground (first level) indicating that the
The second comparison circuit 57 generates an output signal when the voltage signal from the arithmetic circuit 55 is smaller than the first reference voltage E ₁ corresponding to H ₁ ), and the second comparison circuit 57 outputs an output signal when the voltage signal from the calculation circuit 55 Maximum vehicle height (2nd level)
The third comparator circuit 58 generates an output signal when the second reference voltage E2 corresponding to _H2 ) is lower than the second reference voltage _E2 , and the third comparator circuit 58 generates an output signal when the voltage signal from the arithmetic circuit 55 is applied to a relatively high vehicle such as a van-type vehicle. Maximum vehicle height (3rd level _H3 )
are each configured to generate an output signal when the third reference voltage E3 corresponding to the voltage _E3 is lower than or equal to the third reference voltage E3. The detection device A generates an output signal from the first comparison circuit 56 when a vehicle, such as an ordinary passenger car, whose vehicle height is greater than H ₁ and smaller than H ₂ enters the gate-shaped traveling frame 1; Further, when a vehicle such as a van-type vehicle whose vehicle height is greater than _H2 and smaller than _H3 enters the gate-type traveling frame 1, the first and second comparison circuits 56 and 57 simultaneously issue output signals, Further, when a vehicle with a vehicle height exceeding H ₃ enters the gate-type traveling frame and it is determined that the vehicle and frame 1 are in a relative positional relationship inappropriate for car washing, the first, second, and third comparisons are made. All of the circuits 56, 57, and 58 are configured to emit output signals simultaneously.

As shown in FIG. 4, the transmitting part 52 and the receiving part 53 of the ultrasonic detection device 50 are formed in a conical shape. There is a risk that the ultrasonic waves will scatter and adhere to the inner surfaces of the conical transmitter 52 and the receiver 53, and the ultrasound emitted from the transmitter 52 will directly enter the receiver 53, causing error movement. Weak ultrasonic waves called side lobes are generated along the side walls of the cone, but the propagation direction and intensity of these side lobes change depending on the temperature, density, etc. of the atmosphere, so depending on the atmospheric conditions, reception may be difficult. The unit 53 may receive a reflected wave from an object located laterally, rather than a reflected wave from a reflector directly below it, and may cause a malfunction.

Therefore, at the tips of the transmitting section 52 and the receiving section 53, a synthetic resin shielding tube is provided at the tip of the transmitting section 52 and the receiving section 53, which extends linearly and thinly along the propagation direction (vertical direction in the illustrated example) of the ultrasonic waves transmitted and received by the transmitting section 52 and the receiving section 53, and whose lower end is open. 52a, 5
3a are integrally connected to each other, and these shielding tubes 52a and 53a effectively prevent splashes of washing water and the like during car washing from entering the receiving sections 52 and 53. The side lobes of the ultrasonic waves described above can be shielded. If a constant gap 50s is set between the lower ends of the openings of the shielding bearing sleeves 52a and 53a as shown in the illustrated example, and a discontinuous portion is formed between the lower ends of the openings, the shielding of the side lobe can be prevented. The effect can be obtained even more reliably.

Additionally, when a car wash is operated in cold weather, the temperature of the washing water is higher than the outside air, which increases the temperature and humidity of the air inside the car wash.
Condensation occurs on the receiving sections 52 and 53 and water droplets adhere to their inner surfaces, which may cause malfunctions or malfunctions.
The tips of the transmitting and receiving sections 52 and 53 are shielded by shielding tubes 52a and 5.
Since the convection of air inside and outside the shielding tubes 52a and 53a can be suppressed by covering the shielding tubes 52a and 53a, it is possible to prevent the occurrence of dew condensation in the emitting and receiving sections 52 and 53 as described above.

In FIG. 1, a control panel 61 attached to the front side of one side of the gate-shaped traveling frame 1 includes a car wash method selection switch 62 for selecting a predetermined car wash program, and a driving motor of the car wash device (see FIG. A start button 63 is provided in the control panel 61 to start the car wash method (not shown), and a predetermined button 63 is provided in the control panel 61 in response to output signals from the start button 63, the car wash method selection switch 62, and the reflection type ultrasonic detection device 50. The car wash control circuit 59 (FIG. 5) as a control means is built in to operate the car wash apparatus in accordance with a control program set.

The car wash control circuit 59 includes a first control program for washing and drying the car body, wax application,
It consists of a second control program for rinsing and drying, and when the first control program is selected, the cleaning water injection device C is activated when the gate-shaped traveling frame 1 moves back and forth.
The washing water is sprayed from the washing water injection pipe 45 to clean the car body surface while brushing it with the top and side rotating brushes 4, 5, 5. Also, when the gate-type traveling frame 1 returns, the drying device D is activated to dry the wet car body surface after cleaning with the pressure air jetted from the top and side blowing nozzles 22, 21, and when the second control program is selected, the gate-type traveling frame 1 is moved back and forth. At times, the wax application device W and the rinsing water injection device R are operated to spray clean water from the aqueous wax injection pipe 37 to wash away excess wax, and when the gate-shaped traveling frame 1 is going back, the drying device D is activated. This allows the car body surface to be dried after wax application and rinsing.

Next, the operation of the device of the present invention will be explained with reference to FIG. 3. First, the car wash direction selection switch 62 selects one of the first and second control programs.
For example, when the first control program is selected and the start button 63 is pressed, a driving engine (not shown) is started, and the gate-shaped traveling frame 1 starts moving toward the vehicle V. When the reflection type ultrasonic detection device 50 reaches directly above the front end of the vehicle V, as shown in FIG. That is, it is detected that the vehicle height is greater than the first level _H1 , and the first
An output signal is sent to either the comparison circuit 56 or the car wash control circuit 59, and the car wash control circuit 59 operates the prime movers 8, 19 to rotationally drive the top and side rotating brushes 4, 5, 5, and the solenoid valve of the washing water injection device C. 48 to open the nozzle 4 of the cleaning water injection pipe 45.
Spray cleaning water from step 6. Gate type traveling frame 1
When the vehicle V moves further forward and the reflection type ultrasonic detection device 50 reaches the front upper surface of the vehicle (FIG. 3B), the height of the vehicle V is relatively low like that of an ordinary passenger car.
If the level is between the first level H ₁ and the second level H ₂ , the reflection type ultrasonic detection device 50 detects this and sends a signal from the first comparison circuit 56 to the car wash control circuit 59 to control the car wash. The operation of the circuit 59 causes the air cylinder 14 to extend and lower the upper rotating brush 4 from the upper limit position (indicated by the third chain line) to the lower limit position (indicated by the dotted line in Figure 3), and also lowers the vehicle height such as in a van-type automobile. is between the second level H ₂ and the third level H ₃ , the reflection type ultrasonic detection device 50 detects this and transmits the signal from the first and second comparison circuits 56 and 57 to the car wash control circuit 59 . A signal is sent and the air cylinder 14 is contracted to hold the upper rotating brush 4 at the upper limit position.

Furthermore, if the height of the vehicle exceeds the third level _H3 , it is determined that the vehicle and the portal traveling frame 1 are in a relative positional relationship inappropriate for car washing. ~Third comparison circuits 56-58
Upon receiving an output signal from the controller, the driving motor (not shown) is deactivated to stop the gate-type traveling frame 1 from traveling, and the operation of all processing devices including the rotating brushes 4 and 5 of the car washing device is also urgently stopped. let This prevents a collision between the vehicle and the gate-shaped traveling frame 1, etc., and also prevents each rotating brush 4, 5
This can also prevent the driver from scratching a particular surface of the vehicle unnecessarily.

In the above, when the vehicle height is equal to or lower than the third level _H3 , the driving motor is continuously operated by the car wash control circuit 59 to continue traveling the portal traveling frame 1, and the vehicle height is lower than the second level H3. For vehicles such as passenger cars that are lower than ₂ (shown by the solid line in Figure 3),
The upper surface rotating brush 4 performs cleaning while brushing along the upper surface shape of the vehicle V, while the vehicle height is at the second level.
For vehicles V such as van-type automobiles that are higher than level H ₂ (shown by chain lines in Figure 3), the top surface of the vehicle body is brushed while the top rotating brush 4 is held at the upper limit position, and at the same time The side rotating brushes 5, 5 move along the front, both side and rear surfaces of the vehicle body while opening and closing in the lateral direction to brush and clean these surfaces. When the reflection-type ultrasonic detection device 50 passes the rear end of the vehicle body (FIG. 3C), the reflection-type ultrasonic detection device 50 detects that the vehicle height has become below the first level _H1 and indicates the After a certain period of time has elapsed since the timer was activated, that is, after the rear end of the gate-type traveling frame 1 has passed the rear end of the vehicle V, the solenoid valve 48 is closed and the nozzle 46 of the cleaning water injection pipe 45 is injected. At the same time, the driving motor (not shown) and the brush driving motor 8,
19 is deactivated to stop the traveling of the gate-shaped traveling frame 1, and also to stop the rotation of the top rotating brush 4 and the side rotating brushes 5, 5.

Next, the drying process begins, and the gate-shaped traveling frame 1 starts going back with the upper rotating brush 4 raised to the upper limit position, and the rear of the vehicle V is connected to the gate-shaped traveling frame 1.
When the vehicle enters the interior, the reflection type ultrasonic detection device 50 detects that the height of the vehicle V is greater than the first level _H1 , and the first comparison circuit 56 detects that the height of the vehicle V is higher than the first level H1.
An output signal is sent to 9 to drive the blower 23.
At the same time, if the vehicle height is between the first level _H1 and the second level _H2 , the first comparison circuit 56
An output signal is sent from the controller to the car wash control circuit 59, which causes the lifting cylinder 27 to extend and lower the upper air blower nozzle 22 to the lower limit position. 2
If the level is higher than H ₂ , output signals are sent from the first and second comparison circuits 56 and 57 to the car wash control circuit 59, so that gate-type running is performed while the upper air blower nozzle 22 is held at the upper limit position. frame 1
As the vehicle goes back, pressure air is blown onto the top and side surfaces of the vehicle body from the top blow nozzle 22 and the side blow nozzle 21 to efficiently dry the surface of the vehicle body. When the gate-shaped traveling frame 1 continues its go-around and leaves the front end of the vehicle V (FIG. 3A), the blower 23 and the driving motor are activated by the car wash control circuit 59 based on the detection by the reflective ultrasonic detector 50. (not shown) is deactivated, the air blowing from the air blowing nozzles 21, 22, and 22 is stopped, and the traveling of the gate-shaped traveling frame 1 is also stopped, thereby completing the drying process.

Further, when the second control program is selected, as in the case where a water-based wax is applied to a vehicle that has already been washed and then dried, the operation of the car wash apparatus is controlled as follows. That is, when the start button 54 is pressed, the gate-shaped traveling frame 1 moves to the vehicle V.
At this time, the top rotating brush 4
is held at the upper limit position, and the prime movers 8 and 19 for driving the rotation of the brushes are also kept inactive.
When the reflection-type ultrasonic detection device 50 reaches directly above the front end of the vehicle V due to the advancement of the gate-type traveling frame 1, the reflection-type ultrasonic detection device 50 detects this and activates a timer (not shown) to maintain a constant state. After the elapse of time, the water-based wax injection pipe 37 and the rinse water injection pipe 31
When the water-based wax reaches the front of the vehicle body, the solenoid valves 33 and 41 are opened by the timer, and the water-based wax injection pipe 3 is opened.
After spraying water-based wax onto the car body surface from the nozzle 38 of 7, clear water is sprayed onto the car surface from the nozzle 32 of the rinsing water injection pipe 31 to wash away excess wax liquid, and the reflection type ultrasonic detection device 50 detects the car body surface. When passing directly above the rear end, the reflection type ultrasonic detection device 50
detects this and activates a timer (not shown), and when the water-based wax injection pipe 39 and rinsing water injection pipe 31 pass the rear of the vehicle body, the solenoid valves 33 and 41 are closed and the water-based wax and rinse water are removed. The water injection is stopped, and at the same time, the operation of a driving motor (not shown) is stopped to stop the gate-shaped traveling frame 1 from moving back and forth. Next, the drying process begins, and when the gate-shaped traveling frame 1 starts going back, the vehicle height is set to the second level by the reflection type ultrasonic detection device 50 during going out.
If it is detected that H is larger than ₂ ,
The upper air blower nozzle 22 is held at the upper limit position, and if it is detected that the vehicle height is between the first level _H1 and the second level _H2 , the lifting cylinder 2
7, the upper surface blowing nozzle 22 is lowered and moved up and down along the upper surface of the vehicle body. When the reflection type ultrasonic detection device 50 detects the rear end of the vehicle body due to the go-around of the gate-shaped traveling frame 1, the blower 23 is driven and the top blow nozzle 22 and the side blow nozzle 2 are activated.
Pressurized air is injected from 1 and 21 onto the top and side surfaces of the vehicle body to efficiently dry these surfaces. When the gate-type traveling frame 1 moves away from the front end of the vehicle V during a go-around, both the blower 23 and the traveling prime mover (not shown) are deactivated based on the detection by the reflection type ultrasonic detection device 50. The air blowing from the upper and side air blowing nozzles 22, 21, and 21 is stopped, and the traveling of the gate-shaped traveling frame 1 is stopped, thereby ending the drying process.

C. Effects of the Invention As described above, according to the present invention, there is provided a positional relationship detection device that can detect that a vehicle and a frame are in a relative positional relationship inappropriate for car washing, and a detection signal outputted by this positional relationship detection device. control means for stopping the relative movement between the vehicle and the frame in accordance with When the position-related device detects that a positional relationship has been established, the above-mentioned relative movement can be automatically stopped in response to this, and as the relative movement continues, the relationship between the vehicle and the frame, etc. It is possible to prevent the occurrence of inconveniences such as damage or breakage.

In particular, the positional relationship detection device has a reflection type ultrasonic detection device that detects the distance to the vehicle body surface by reflecting sound waves on the vehicle body surface, and based on the detected distance, the vehicle and the frame are determined to be unsuitable for car washing. Since it is designed to detect that the vehicle is in an appropriate relative positional relationship, there is no risk of damaging the vehicle surface during detection, maintenance and inspection are easy, and furthermore, the vehicle surface to be detected is Even in the case of a bulge, the surface position can be detected with high accuracy, so there is no need to set a large limit distance between the frame, etc. and the surface position of the vehicle in anticipation of detection errors, and the device can be adjusted accordingly. It can contribute to miniaturization.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a schematic side view of a car washing device, FIG. 2 is a schematic perspective view of its rinsing water injection device, wax application device, and washing water injection device, and FIG. 4 is an enlarged view of the main parts of the reflection-type ultrasonic detection device, FIG. 5 is a block diagram of the reflection-type ultrasonic detection device and its related parts, and FIG. 6 is a diagram showing the operating state of the car wash device. FIG. 2 is a front view of a conventional example using a transmission type ultrasonic detection device. A...Detection device as a positional relationship detection device, 1
...gate-shaped traveling frame as a frame, 4...
A top rotating brush as a rotating brush, 5...a side rotating brush as a rotating brush, 59... a car wash control circuit as a control means.

Claims (1)

[Claims] 1 It has a frame 1 equipped with various processing devices 4, 5, C, W, R, 21, 22 that perform processing such as cleaning and drying on the vehicle body surface, and this frame 1 and the vehicle V are connected to the front and rear of the vehicle V. A car washing device capable of relative movement in a direction includes a reflection type ultrasonic detection device 50 that detects the distance to a vehicle body surface by reflecting sound waves on the vehicle body surface, and based on the detected distance, the vehicle A positional relationship detection device A that can detect that the V and the frame 1 are in a relative positional relationship inappropriate for car washing, and a control means that stops the relative movement in response to a detection signal output from the positional relationship detection device A. 59. A control device for a car wash device, comprising: