JP2000127916A - Car body upper surface treating device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance a washing effect of a car body upper surface in a car body upper surface washing device making a top brush follow up to the car body upper surface so as to wash this upper surface by swinging of a guide rail supporting the top brush and lift controlling thereof by a torque motor, by making the guide rail easily return to its non-swinging position when the guide rail is swung. SOLUTION: Paired tensile springs 351, 352 are connected in V shape between a running frame 1 and a guide rail 8 swingably supported therein to provide a top brush 17 capable of lifting, and increasing ratio of returning force by the tensile springs 351, 352 relating to increasing of a swing angle of the guide rail 8 is gradually increased so as to make the guide rail 8 easily return to non-swinging position N.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upper surface processing body such as a top brush and a top buff supported by a frame and driven to rotate, following an upper surface of a vehicle body, and performing processes such as cleaning and polishing on the upper surface. The present invention relates to an apparatus for treating the upper surface of a vehicle body.

[0002]

2. Description of the Related Art Conventionally, a guide rail supported on a frame by a supporting member so as to be able to swing up and down around a lower end, an upper surface treatment body supported by the guide rail and capable of moving up and down along the guide rail, A return means for returning the guide rail to the non-oscillation position, and an elevating means for elevating and lowering the upper surface processing body are provided. An apparatus for treating the upper surface of a vehicle body in which the upper surface is processed is already known (see JP-A-8-99611).

[0003]

By the way, in the above-mentioned conventional vehicle body upper surface processing apparatus, as shown in FIG. 6, the return means of the guide rail 08 which is supported so as to be able to swing back and forth with the support shaft 07 is a guide. A pair of compression springs 035 ₁ , 035 ₂ provided substantially horizontally between the rail 08 and the frame.
It consists of.

[0004] However, as in the vehicle body upper surface treatment apparatus for a vehicle, the return means is configured to form a return means, the compression springs 035 _1, 035 ₂ pairs are substantially horizontally disposed, FIG. As shown by a broken line in FIG.
8, the ratio of the increase of the return force f of the guide rail 08 to the increase of the swing angle θ tends to gradually decrease as the swing angle θ increases. For this reason, an increase in the force that the upper surface processing body 017 receives from the upper surface of the vehicle body causes the guide rail 0
8 oscillates from the non-oscillation position, and then the force that the upper surface processing body 017 receives from the upper surface of the vehicle body decreases under the control of the elevating means,
When the guide rail 08 is returned to the non-oscillation position, the force for returning the guide rail 08 becomes small, and as a result, the return of the guide rail 08 becomes slow. There is a problem that the processing effect of the upper surface processing body 017 on the upper surface of the vehicle body is reduced.

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a guide rail,
The return means effectively acts in a direction to cancel the moment around the support member of the guide rail due to the weight of the upper surface processing body or the like, and when the guide rail swings, it is easy to return to the non-swing position of the guide rail. It is an object of the present invention to provide a vehicle body upper surface processing apparatus which improves the processing effect of the vehicle body upper surface.

[0006]

According to the first aspect of the present invention, there is provided a guide rail supported on a frame so as to be able to swing up and down with a lower end portion as a swing fulcrum, and the guide rail. An upper surface processing body supported so as to be able to move up and down along a rail, a return unit for returning the guide rail to a non-oscillation position, and an elevating unit for raising and lowering the upper surface processing unit, swinging the guide rail, In the vehicle body upper surface processing apparatus, wherein the upper surface processing body is made to follow the upper surface of the vehicle body by controlling the lifting / lowering means to process the upper surface. It is characterized in that the rate of increase of the return force is gradually increased. According to this feature, the guide rail can be easily returned to the non-oscillation position, and the upper surface treatment body on the upper surface of the vehicle body can be used. It is possible to improve the treatment effect.

In order to achieve the above object, according to the second aspect of the present invention, a guide rail supported by the frame so as to be able to swing up and down with a lower end portion as a swing fulcrum, and the guide rail supported by the guide rail is provided. An upper surface processing body that can move up and down along a rail, return means for returning the guide rail to a non-oscillation position, elevating means for raising and lowering the upper processing body, and swing detection means for detecting the swing of the guide rail And a control means for controlling the elevating means based on the detection of the swing detecting means, wherein the upper surface processing body follows the upper surface of the vehicle body and processes the surface. The rate of increase in the return force of the guide rail with respect to the increase in the swing angle of the guide rail is gradually increased, and according to this feature, the guide rail is not rocked. Can be easy to return to the location, it is possible to improve the treatment effect by the top assembly of a vehicle body upper surface.

In order to achieve the above object, according to the third aspect of the present invention, in the first or second aspect, the return means is provided on the guide rail in a swinging direction of the guide rail. It is characterized by a means for applying an upward tensile force along two action lines inclined in a V-shape in a direction away from the vertical axis upward. According to such a feature, the guide rail is The arrangement of the return means is effective in facilitating the return to the non-oscillation position, and the processing effect of the upper surface processing body on the upper surface of the vehicle body can be improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be specifically described below based on the embodiments of the present invention shown in the accompanying drawings.

Referring to FIGS. 1 to 5, a preferred embodiment in which the present invention is applied to a so-called mobile car washer in which a frame is moved relative to a vehicle to be processed will be described.

FIG. 1 is a partially cutaway front view of a mobile car washer equipped with the apparatus of the present invention, FIG. 2 is a side view of the car washer along the line 2 in FIG. 1, and FIG. FIG. 3 is an enlarged partial sectional view taken along line 3-3 of FIG.

In FIGS. 1 and 2, a traveling frame 1 of a mobile car washer W is formed in a gate shape so that a vehicle V to be processed can pass through. _1, 1 ₁ of the front and back, a drive wheel 3, 3 and the driven wheels 4, 4 are respectively rotatably Jikuka, drive wheels 3, 3 supported by the left and right side frames 1 _1, 1 ₁ Are connected to the traveling motors 2 and 2 via a speed reduction transmission mechanism. The drive wheels 3, 3 and the driven wheels 4, 4 are rotatably mounted on traveling rails 5, 5 laid on an installation surface, and the traveling frame 1 rotates the traveling motors 2, 2 in forward and reverse directions. By driving, forced reciprocating traveling is possible.

The traveling frame 1 also has a gate
A guide frame 6 formed in a mold is provided. This guide
The frame 6 is a left and right side frame of the traveling frame 1
1₁, 1 ₁A pair of left and right guides extending vertically along
Rails 8, 8 and ceiling frame 1 of running frame 1_TwoTo
Extending in the left-right direction along the pair of guide rails
A connecting beam 9 that connects the upper ends of 8, 8 together in a bridge.
It is configured. Lower left and right of the guide frame 6,
A support member is provided below the pair of guide rails 8, 8.
Are fixed respectively. These supports
The shafts 7, 7 are supported by bearings P, P provided on the traveling frame 1.
Supported. Each bearing P has, as shown in FIG.
A V-shaped groove G is provided, and the support shaft 7 is rotated by the V-shaped groove G.
Rollably supported. Thereby, the guide frame 6
Can swing up and down in the running direction of the running frame 1.
Wear.

Although not shown, escape preventing means is provided above the V-shaped groove G so that the support shaft 7 does not escape.

The coupling beam 9 is formed by a round pipe, and a synchronous shaft 11 is vertically passed through the inside thereof.
Both ends of the synchronous shaft 11 are connected to the pair of guide rails 8,
8 are rotatably supported by bearings 10 provided at the upper end.

As is clearly shown in FIG. 3, the pair of guide rails 8, 8 are formed by channel members having an open U-shape on their inner surfaces whose cross sections are opposed to each other. Guide plates 12, 12 extending in the vertical direction are fixed to the wall surface.

The pair of left and right guide rails 8 and 8
Paired left that is guided by
Right bogie C₁, C_TwoAre respectively provided. Right and left carriage
C₁, C _TwoAre both guide rails on the bogie bodies 15, 15.
Rollers 13, 13, 14 are provided, and one of the guide rollers
13 and 13 are inner walls of the guide plate 12 and the guide rail 8.
Surface and the other guide rail
The roller 14 is rotatably engaged with the inner wall surface of the guide rail 8.
The right and left bogie C₁, C_TwoAre each
Guided by left and right guide rails 8
Noh.

A top brush support shaft 16 extending across the guide rail 6 is fixedly supported on the left and right carriages C ₁ and C _2. The top brush support shaft 16 has a hollow top brush 17 to which a top brush 17 is attached. A rotating shaft 18 is rotatably inserted and supported. A driven sprocket 19 is fixed to one end (the right end in FIG. 1) of the rotating shaft 18. On the other hand, a supporting frame 15a is provided integrally with the bogie main body 15 of the bogie C ₂ (the right end in FIG. 1). The supporting frame 15a supports a rotation driving means of the top brush 17, that is, a motor 20. The driving sprocket 21 fixed to the driving shaft of the driven sprocket 20
Is connected to the motor 2 through an endless chain 22.
0, the top brush 17 is rotated by the rotating shaft 18.
It can be rotated forward and backward together with.

At the lower part of one guide rail 8 (right side in FIG. 1), a torque motor 23 with a speed reducer as an elevating means for synchronizing and driving the left and right carriages C ₁ and C ₂ is supported. The motor 23 is connected to voltage changing means VR provided on the front surface of the traveling frame 1. The driving shaft of the torque motor 23, driving sprocket 24 ₁ is secured. The other guide rail 8 (left side in FIG. 1)
At the bottom of the lower sprockets 24 ₂ is rotatably provided in the drive sprocket 24 ₁ of the same axis. On the other hand, both ends of the synchronization shaft 11, between the drive sprocket 24 ₁ and correspond to the lower sprockets 24 ₂ is secured is driven sprockets 25, 25, drive sprocket 24 ₁ and one of the driven sprockets 25 and between the lower sprocket 24 ₂ and the other driven sprocket 25, which is wound suspension chain 26, 26 is accommodated in the guide rail 8, 8, respectively, one of the free end of the chain 26, 26, the other free end of the carriage C _1, respectively are bound to the underside of the C _2, also their chain 26 is bound respectively to the upper surface of the carriage C _1, C _2. In addition, chain 26, 26
The balance weights 28, 28 are respectively attached to the intermediate portions of. Therefore, according to the forward / reverse rotation drive of the torque motor 23 as the elevating means, the right and left carriages C
₁ and C ₂ can be driven up and down in synchronization.

Thus, the weight of the balance weights 28 and 28, the frictional resistance of the top brush 17 including the torque motor 23 with the speed reducer, and the weight of the top brush 17 are set so as to be substantially balanced. When the torque motor 23 is inactive and the top brush 17 is in a free state (a state in which the top brush 17 is not in contact with the upper surface of the vehicle V to be processed), and a lifting force of a predetermined amount or more acts on the top brush 17. When the top brush 17 does not move, the top brush 17 does not move in any of the up and down directions, and maintains the current position. On the other hand, the top brush 17 comes into contact with the upper surface of the vehicle body and a lifting force of a predetermined level or more is applied. At this time, the top brush 17 rises.

In a middle portion of one of the guide rails 8 (the left side in FIG. 1), a lower limit position detecting switch 32 for detecting a lower limit position of the top brush 17 at an interval vertically and an upper limit position detecting for detecting the upper limit position thereof. A switch 33 is provided, and these switches 32 and 33 are operated by magnets 34 provided on the bogie main body 15, respectively. In addition, upper limit stoppers 53, 53 are provided above the left and right guide rails 8, 8, respectively.
In addition, lower end stoppers 54, 54 are fixed to their lower portions, respectively.
The upper and lower positions of the top brush 17 can be regulated by hitting the carriage bodies 15, 15.

The middle of the left and right guide rails 8 in the vertical direction
Section and ceiling frame 1 of running frame 1_TwoBetween
V-shaped paired coils as viewed from the side of the running frame 1
Extension spring 35 consisting of a spring₁, 35_TwoIs attached
I have. These tension springs 35 ₁, 35_TwoIs a guide
To the vertical center line LL in the swing direction of the
Are inclined away from each other.
The horizontal component of the tension is approximately perpendicular to the guide rails 8,8.
To return to the neutral position, that is, the non-swinging position N.
To use. Also, a tension spring 35₁, 35_TwoVertical component force
Acts in the direction of lifting the guide rails 8,8.
The force in the lifting direction of the guide rails 8 (vertical
Guide rails 8, 8, top brush
The force of the guide rails 8, 8 falling due to the weight of 17, etc.
Can be reduced. Further, a pair of tension springs 35₁,
35_TwoWhen the guide rail 8 swings,
Tension spring 35₁, 35_TwoTo return guide rail 8
Direction force is greater than that of the conventional compression spring (see FIG. 6).
For example, as shown in FIG.
When the id rail 8 swings in the forward F direction, the swing direction
Tension spring 35 on the side opposite to the direction_TwoIs greatly extended and tensile
Spring 35_TwoAngle of action line of force
Therefore, a relatively large return force is applied to the guide rail 8.
On the other hand, the tension spring 35 on the swing direction side₁Is almost growing
The guide rail 8 will not return.
Has almost no effect. Therefore, the solid line in FIG.
As shown, the guide relative to the swing angle θ of the guide rail 8
The relation between the return force f of the rail 8 and the swing angle θ is
On the other hand, the increasing rate of the return force f increases,
The return force f increases quadratically with an increase in the angle θ.
And Therefore, the guide rail 8 is the conventional one
In this case, it is easier to return to the non-swing position N direction.

The tension springs 35 ₁ , 35 ₂ constitute return means for returning the guide rails 8, 8 to the neutral position, that is, the non-swinging position N.

[0024] Above the combined beam 9 of the guide frame 6, the ceiling frame 1 ₂ traveling frame 1, a small angle switch 39 is oppositely arranged with large angle switch 40 at intervals, while the combined beam 9 , The two switches 39, 4
An actuator 41 for operating them is interposed between 0 and 0. When the guide frame 6 is swinging forward or backward R around the support shaft 7 from the substantially vertical neutral position, that is, the non-swinging position, at a small angle that is equal to or more than a preset small angle, It can be operated by the actuator 41 to detect its angle,
The large-angle switch 40 is actuated by the actuator 41 when the guide frame 6 swings from the substantially vertical neutral position N around the support shaft 7 by a predetermined large angle in the front F or the rear R. The angle can be detected.

The small-angle switch 39 and the actuator 41 constitute a swing detecting means for the guide frame 6.

On the front surface of the traveling frame 1, a traveling position detecting means 42, a start switch 48, a control means 47 for controlling the car washer W, and a voltage changing means V for the torque motor 23 are provided.
R and the like are collectively arranged, and the traveling position detecting means 4
2 adds the pulse of the rotary encoder 45 provided when the start position detecting means 43 provided on the traveling frame 1 is separated from the operating cam 44 when the traveling frame 1 is moving forward, In the case of a line, the travel position from the start position of the travel frame can be detected by subtraction, and a conventionally known travel position is used. Below the front portion of the traveling frame 1, the vehicle V to be cleaned is moved forward by a distance A (see FIGS. 4 and 5) from the center of rotation of the top brush 17 when the guide rails 8, 8 are in the neutral position N. Photoelectric sensor 4 for detecting the rear end of
The light projector 46A and the light receiver 46B of No. 6 are fixed. Stop position display devices 50, 50 indicating the stop positions of the front wheels of the vehicle V to be cleaned are fixed on the installation surface between the traveling rails 5, 5.

The control means 47 includes the top brush 1
7 is controlled so as to rotate forward (clockwise in FIG. 4) when the traveling frame 1 goes forward, and to reversely rotate (counterclockwise in FIG. 5) when going backward. When the traveling frame 1 moves in the forward direction, the top brush 17 rotates forward, so that the rotation direction of the top brush 17 on the contact side with the upper surface of the vehicle body is forward, that is, the relative movement direction of the traveling frame 1 with respect to the vehicle V. The direction is opposite to X, and the direction in which the top brush 17 rises along the upwardly inclined surface (for example, the surface of the windshield) of the upper surface of the vehicle body (see FIG. 4).

When the traveling frame 1 is going backward, the top brush 17 rotates in the reverse direction, so that the rotation direction of the contact surface of the top brush 17 with the upper surface of the vehicle body is the rearward direction R, that is, the relative direction of the traveling frame 1 to the vehicle V. Movement direction X '
, The top brush 17 rises along an upwardly inclined surface (for example, a rear glass surface) of the upper surface of the vehicle body (see FIG. 5).

Reference numeral 49 in the figure denotes a side brush for cleaning the front and rear surfaces and both side surfaces of the vehicle V.

Next, the operation of the embodiment of the present invention will be described with reference to FIGS.

1. FIG. 4 is a diagram illustrating a process of cleaning the upper surface of the vehicle body when the traveling frame 1 travels forward.

[0032] The running frame 1 is stopped at a start position (FIG. 4, left end position). This position is detected when the start position detection switch 43 is operated by the cam 44. If you press the start switch 48 here,
The rotation of the motor 2 causes the top brush 17 at the upper limit position (a) to rotate forward (rotation clockwise in FIG. 4), and the elevating torque motor 23 to rotate forward with the first voltage to rotate the top brush 17. Is the upper limit position (a)
Descend from position. When the top brush 17 is lowered to the lower limit position (b), the lower limit position detection switch 32
, The torque motor 23 is deactivated, and the bogies C ₁ , C ₂ abut against the lower limit stoppers 54, 54, thereby stopping the top brush 17 and the descent.
The traveling frame 1 starts going forward by the forward rotation drive 2.

[0033] As the traveling frame 1 moves forward, the top brush 17 at the lower limit position reaches the position (C), and the vehicle V
To the front end of the hood.

At this time, as shown in FIG. 4, when the height of the hood of the vehicle V is relatively low, the guide frame 6 is held at the substantially vertical neutral position N while the lower surface of the top brush 17 is kept. Reaches the front end of the hood of the vehicle V, and a contact lifting force acts on the top brush 17 by a predetermined or more lifting force.
7 rises along the guide rails 8,8. Next, when the lifting force acting on the top brush 17 decreases to a predetermined value or less due to the raising of the top brush 17, the raising of the top brush 17 stops. In this way, top brush 1
The reference numeral 7 moves along the hood surface of the vehicle V, and the top brush 17 can brush-clean the hood surface with an appropriate surface pressure.

As shown in FIG. 4C, in the case of the vehicle V 'having a relatively high bonnet surface, when the top brush 17 comes into contact with the front end surface of the bonnet, the contact reaction force is applied. It is pushed backward. Thus the guide frame 6 is spring 35 ₁ Tensile substantially perpendicular neutral position N, 35 rear R around the support shaft 7 against the return force f by ₂ (Fig. 4,
(Left side). As a result, the small-angle switch 39 is actuated, and the up-and-down torque motor 23 is reversely driven with the second voltage by the control signal from the control means 47 which receives the detection signal therefrom, and the top brush 17 is forcibly moved up. You. According top brush 17 by the raised operative rises, gradually reduces the contact reaction force pushing the top brush 17 rearwardly R, the guide frame 6, the neutral by return force by the tension spring 35 _1, 35 ₂ as return means It swings in the direction to return to the position N. When the small-angle switch 39 becomes inoperative due to this swing, the elevating torque motor 23 also becomes inoperative, and the top brush 17 is raised by the lifting force due to the contact reaction force. At this time, as described above, the guide rails 8,
Since the guide frame 6 easily returns to the non-oscillation position direction, the guide frame 6 quickly returns to the neutral position, that is, the non-oscillation position N direction from the rear R oscillation position, and the surface pressure of the top brush 17 becomes smaller than the appropriate surface pressure range. The small-angle switch 39 is deactivated before it becomes smaller. Thereby, the top brush 17 can always clean the bonnet surface with an appropriate surface pressure. Next, when the lifting force acting on the top brush 17 decreases to a predetermined value or less due to the rising of the top brush 17, the rising of the top brush 17 stops.

[0036] When the top brush 17 comes to the position (d), which is the boundary between the hood and the windshield surface, from the position (c) due to the continuation of the traveling of the traveling frame 1, the top brush 17 comes into contact with the inclined surface of the windshield. Is pushed rearward by the contact reaction force, whereby the guide frame 6 swings to the left, that is, to the rear R, and the small-angle switch 39
Is activated. As a result, the torque motor 23 is re-rotated with the second voltage via the control means 47, and the top brush 17 rises along the guide rails 8,8.
As the top brush 17 rises, the top brush 17
The contact reaction force to push the rear R is gradually decreased, the guide frame 6 is swung in the direction back to the tension spring 35 _1, 35 by the returning force by ₂ neutral position or non-rocking position N. When the small angle switch 39 becomes inoperative due to this swing, the torque motor 23 also becomes inoperative. And top brush 17
Rises due to the repulsive force of contact with the windshield of the vehicle body. In this manner, the top brush 17 rises along the windshield surface while brushing and cleaning the windshield surface by repeatedly operating and not operating the elevating torque motor 23 based on the swing of the guide frame 6 back and forth.
At this time, as in the case of cleaning the hood, the guide rails 8 and 8 easily return to the non-oscillation position direction. The small angle switch 39 is deactivated before the pressure falls below the appropriate surface pressure range. Thereby, the top brush 17 can always brush-clean the front glass surface with an appropriate surface pressure.

[0037] As the traveling frame 1 continues to move forward, the top brush 17 comes to the position (e) in FIG. 4 and moves from the windshield surface to the roof surface. At this time, when the small angle switch 39 is operated by the swing of the guide frame 6,
The top brush 17 is driven by the operation of the lifting torque motor 23.
There accordance rises, the contact reaction force of the vehicle body to push the top brush 17 to the rear R is gradually decreased, the guide frame 6 is swung back toward the neutral position by a return force generated by the tension spring 35 _1, 35 _2. If the small angle switch 39 becomes inoperative due to this swing, the torque motor 23 also becomes inoperative. At this time, similarly to the bonnet surface, the guide rails 8 and 8 are easy to return to the non-swinging position direction.
The small angle switch 39 is deactivated before the surface pressure of the top brush 17 becomes smaller than the appropriate range of the surface pressure.
7 can always brush and wash the roof surface from the windshield surface with an appropriate surface pressure.

During this process, the guide frame 6 may swing to the left, that is, to the rear R depending on the shape of the vehicle body, and the large-angle switch 40 may be operated.
In such a case, the forward movement of the traveling frame 1 is temporarily stopped by stopping the operation of the traveling motor 2, and when the large-angle switch 40 is deactivated, the traveling frame 1 is restarted in the forward movement.

[0039] As the traveling frame 1 continues to travel, the top brush 17 reaches the (へ) position on the roof surface of the vehicle body,
As to clean the roof surface brushing, that traveling frame 1 has reached a predetermined distance L ₁ which is previously set from the start position, the traveling position detecting means 42 detects, thereby elevating the torque motor 23 is a third The top brush 17 is driven forward by the voltage, and the top brush 17 descends, and the top brush 17 comes into contact with the roof surface with an appropriate surface pressure by a balance between a descending force at that time and a contact reaction force received by the top brush 17 from the roof surface. The roof surface can be brushed and cleaned efficiently.

[0040] When the top brush 17 brushes and cleans the roof surface and reaches the rear end position (g) of the roof surface, the contact reaction force received from the vehicle body surface decreases and the top brush 17 descends along the rear glass surface. I do. At this time, since the elevating motor 23 continues the forward rotation drive from the (へ) position of the previous stroke, the top brush 17 can brush and clean the rear glass surface without leaving the rear glass surface.

[0041] When the top brush 17 finishes the brushing of the rear glass surface and reaches the front position (h) on the trunk surface, the top brush 17 is in contact with the lowering force of the elevating motor 23 and the contact force received from the trunk surface. When the force is balanced, the lowering of the top brush 17 stops, and the top brush 17 can brush-clean the trunk surface with an appropriate surface pressure.

[0042] The forward stroke continues traveling frame 1, a photoelectric sensor 46 provided on the traveling frame 1 detects the rear end of the vehicle V, the travel position L ₂ to be detected by the traveling position detecting means 42 are stored.

When the top brush 17 has passed the rear end of the vehicle V, its lowering is stopped by the lower limit stopper 54. When the traveling frame 1 reaches the forward stop position (FIG. 4, right end position, return start position), the traveling of the traveling frame 1 is stopped, and the top brush 17 reaches the position (i). Finishes the brushing cleaning of the upper surface of the vehicle body by going forward.

2. FIG. 5 is a diagram showing a process of cleaning the upper surface of the vehicle body when the traveling frame 1 is returning.

'. Next, in a state where the traveling frame 1 is at the forward end position, that is, the return start position (FIG. 5, right end position), the top motor 17 is driven in the reverse direction (FIG. 5, counterclockwise) by disabling the elevating motor 23. The traveling frame 1 is moved backward. Thereafter, the trunk surface and the rear glass surface of the vehicle V can be brushed and cleaned by the same operation as (b) to (f) (see FIG. 4) when the traveling frame 1 moves forward. In this case, the guide frame 6 swings forward F (FIG. 5, right side) by contacting the vehicle body surface, and when returning from the swing position of the forward F to the neutral position (non-swing position) N direction. As described above, since the guide rails 8, 8 can easily return in the non-oscillation position direction, the return can be performed quickly.

'. Continued going back of the traveling frame 1,
Top brush 17 reaches the roof surface, the traveling position detecting means 42 detects that it is now only go-around the traveling position set distance B set in advance than the travel position L _2, the lifting torque motor 23 first It is driven forward by three voltages.
Thus, the top brush 17 brushes and cleans the roof surface and the bonnet surface by the same operation as (f) to (l) during the forward movement.

When the traveling frame 1 reaches the reversing end position, that is, the start position (the left end position in FIG. 5), the reversing of the traveling frame 1 and the rotation of the top brush 17 are stopped, and the torque motor 23 is driven to rotate in the reverse direction so that The brushes 17 are raised, and the carriages C ₁ , C ₂ hit the upper limit stoppers 53, 53, so that the top brushes 17 are stopped at the upper limit position, and the brushing cleaning in the retrace of the traveling frame 1 is completed.

Although the embodiment of the present invention has been described above, the present invention is not limited to the embodiment, and various embodiments are possible within the scope of the present invention. For example, in the above-described embodiment, instead of controlling the lifting / lowering means based on the detection of the small angle switch 39, the detection of the load detection means for detecting the load of the motor 20 for rotating and driving the top brush 17 by current, power, rotation speed, and the like. Based on this, the lifting means may be controlled so that the load of the motor 20 falls within a predetermined load value.
Also in this case, the guide rail can be quickly returned from the swinging position to the neutral position, so that the top brush 17 does not repeatedly rise and fall when the top surface of the vehicle body is inclined up and down. Followability is improved. The small angle switch 39 and the load detecting means of the motor are contact state detecting means for detecting a state in which the top brush 17 is in contact with the upper surface of the vehicle body.

In the above embodiment, the small angle switch 3
9, a vehicle height sensor for detecting the vehicle height of the vehicle is provided as described in Japanese Patent Application Laid-Open No. 1-164654, and the vehicle height sensor and the traveling position detection are performed. The lifting means may be controlled based on a detection signal of the means. Also in this case, since the guide rail can be quickly returned from the swinging position toward the neutral position,
When the upper surface of the vehicle body is inclined upward, the contact followability of the top brush 17 to the upper surface of the vehicle body is improved.

Further, in the above embodiment, the case where the present invention is applied to a mobile car washer has been described. However, it is needless to say that the present invention can also be applied to a fixed car washer which moves the vehicle V back and forth with respect to a fixed frame. The top surface treatment body may be a top buff, a top buff or other treatment body on the upper surface of the vehicle body, or a normal three-phase induction motor may be used in place of the lifting torque motor. Further, the guide frame for supporting the upper surface processing body such as the top brush need not be a gate type, and the frame may have only one guide rail. Further, in the case of a processing apparatus that performs processing with the upper surface processing body only at the time of going forward or only at the time of returning, the guide frame only needs to be able to swing upward and downward from the neutral position N to either the front F or the rear R. .

The return means may be another known spring member or an elastic member such as rubber instead of the tension spring.

[0052]

As described above, according to the invention as set forth in the claims, in the vehicle body upper surface processing apparatus, the ratio of the increase of the return force of the guide rail to the increase of the swing angle of the guide rail is increased. As a result, the guide rail can easily return to the non-swing position. Thereby, the processing effect of the upper surface processing body on the upper surface of the vehicle body can be enhanced.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a mobile car washer equipped with the apparatus of the present invention.

FIG. 2 is a side view of the car washer taken along line 2 of FIG. 1;

FIG. 3 is an enlarged sectional view taken along line 3-3 in FIG. 1;

FIG. 4 is a diagram showing a cleaning process of the upper surface of the vehicle body when the traveling frame is moving forward.

FIG. 5 is a diagram showing a washing process of the upper surface of the vehicle body when the traveling frame is going backward.

FIG. 6 is a diagram showing a state in which a return unit is attached to a guide rail in a conventional vehicle body upper surface processing apparatus.

FIG. 7 is a diagram showing the relationship between the swing angle of the guide rail and its return force.

[Explanation of symbols]

1 Frame (travel frame) 8 Guide rail 17 Upper surface treatment body (top brush) 23 Lifting means (Torque motor for raising and lowering) 35 ₁ ... Return means (tensile spring) 35 ₂ ... Return means (tensile spring) 39 ... Swing detection means (small angle switch) 41: swing angle detection means (operator) 47: control means N: non-swing position (neutral position) θ:・ ・ ・ Swing angle (of guide rail) f ・ ・ ・ ・ ・ ・ ・ ・ ・ Return force (of guide rail)

Claims (3)

[Claims] 1. A guide rail (8) supported on a frame (1) so as to be able to swing up and down with a lower end portion serving as a swing fulcrum, and a guide rail (8) supported by the guide rail (8). Upper surface processing body (17) that can be raised and lowered, return means (35 ₁ , 35 ₂ ) for returning the guide rail (8) to the non-oscillating position (N), and lifting means for raising and lowering the upper surface processing body (17) (23)
Swinging of the guide rail (8);
In the vehicle body upper surface processing apparatus, wherein the upper surface processing body (17) follows the upper surface of the vehicle body by the control of 3) to process the upper surface, the swing angle (θ) of the guide rail (8) is provided. ), The rate of increase of the return force (f) of the guide rail (8) to the increase of the guide rail (8) gradually increases. 2. A guide rail (8) supported on a frame (1) so as to be able to swing up and down with a lower end portion as a swing fulcrum, and an upper surface processing body supported so as to be able to move up and down along the guide rail (8). (17), return means (35 ₁ , 35 ₂ ) for returning the guide rail (8) to the non-swinging position (N), and elevating means (23) for elevating the upper surface processing body (17)
And swing detecting means (3) for detecting the swing of the guide rail.
9, 41), and control means (47) for controlling the lifting / lowering means (23) based on the detection of the swing detection means (39, 41). A top surface treatment apparatus for a vehicle, the surface of which is treated so as to follow the increase in the return force (f) of the guide rail (8) with respect to the increase in the swing angle (θ) of the guide rail (8). A top surface treatment device for a vehicle, characterized in that a rate at which the vehicle is gradually increased. 3. The return means (35 ₁ , 35 ₂ ) is attached to the guide rail (8) upwardly with respect to a longitudinal axis (LL) of a swing direction of the guide rail (8). 3. The vehicle body upper surface treatment apparatus according to claim 1, wherein the means is a means for applying an upward tensile force along two action lines inclined in a V-shape in a direction away from each other.