JPS62102132A - Testing method for headlight for automobile - Google Patents

Abstract

PURPOSE:To perform an accurate test of the titled headlight with simple operation by positioning an irradiating device so that an optical axis of its light emitting means corresponds to the optical axis of the headlight and fitting it, and testing directivity of the optical axis of the headlight based on irradiated light of the light emitting means in that state. CONSTITUTION:In case of testing an installing state of the headlight (L) with respect to an automobile body (M), namely, the directivity of the optical axis of the headlight (L) using the irradiating device 2, first, the automobile body (M) on which the headlight (L) is installed is carried in a test area on a conveying path 1 in an automobile body assembly line of a preceding process and stopped at a point of time when the distance to a screen 3 set up at the test area attains a prescribed value. Then, an operator handles the irradiating device 2 and corresponding each positioning leg member 8 of the case 6 to a projecting part (L1) of the headlight (L) of the automobile body (M) and the engaging recessed part 8a is engaged with the projecting part (L1) of the headlight (L). The inside of a vacuum pad 7 is made the negative pressure by an evacuating device by the engagement and the irradiating device 2 is positioned at the prescribed position in the front of the headlight (L).

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for testing automobile headlights.
Especially regarding measures to improve work efficiency.

(Prior Art) In general, automobile headlights have strict standards regarding the directionality of their irradiated light in order to prevent glare from oncoming vehicles. Therefore, self! J] On the production line of the vehicle, in the inspection process after the headlights are installed on the car body, a line is always turned on to test whether the installation condition is correct.

As a test method for headlights, for example, as disclosed in Japanese Patent Application Laid-Open No. 58-10603, when a vehicle body with a headlight installed is transported on a conveyor and arrives at a test area, a labor fee is charged. enters the passenger compartment of the e-vehicle, turns on the headlights by operating a switch, and projects the black light onto the side of the conveyor via a reflector onto the screen that illuminates the optical axis of the headlights. A method is employed to check whether the value matches a reference point on the screen or is within an acceptable range.

(Problem to be Solved by the Invention) However, in the test method described above, each time a headlight test is performed, a worker opens and closes the car door to enter and exit the vehicle, and operates a switch to turn on the headlights. There was a problem in that the lights had to be turned on and off, and door opening/closing operations and switch operations were cumbersome. In particular, if the test results show that the optical axis of the headlights is outside the permissible range on the screen, the -41 rider should exit the cabin, correct the 85m position of the headlights relative to the vehicle body, and then In order to turn off the light, it is necessary to enter the vehicle compartment again and turn off the switch, which requires frequent door opening/closing operations and switch operations, further reducing work efficiency.

The present invention has been made in view of the above, and its purpose is to indirectly test the irradiation direction of the headlights using a substitute for headlights that can be operated outside the vehicle. This eliminates the need for an operator to operate a switch in the vehicle interior to turn on the headlights and to open/close the door accordingly, thereby improving work efficiency.

(Means for Solving the Problems) In order to achieve the above object, the solving means of the present invention first includes a suction device that is removably adsorbed to the front surface of a headlight attached to a vehicle body, and a suction device that emits irradiation light. An irradiation device comprising a light emitting means and a positioning engagement portion that is removably positioned and engaged with an engagement portion provided on the front surface of the headlight so that the optical axis of the light emitting means corresponds to the optical axis of the headlight. Prepare a device and attach this irradiation device to the front of the headlight.

That is, at this time, the irradiation device is attached to the headlight by engaging the positioning engagement portion with the engagement portion on the front surface of the headlight and attaching the suction tool to the front surface of the headlight. While this irradiation device is attached to a headlight, the directionality of the optical axis of the headlight is tested by causing the light emitting means to emit light and projecting the irradiated light onto a screen.

(Function) With the above configuration, in the present invention, the irradiation device is attached to the front of the headlight mounted on the vehicle body, and the irradiation light from the light emitting means is projected onto the screen to test the directionality of the optical axis of the headlight. be done.

At this time, the irradiation device has its positioning engagement portion releasably engaged with the engagement portion on the front surface of the headlight so that the optical axis of the light emitting means corresponds to the optical axis of the headlight. The directionality of the optical axis of the headlight is indirectly tested without turning on the target headlight. Therefore, workers can perform tests outside the car and are freed from having to operate a switch to turn on the headlights or open/close the door, making the work to optimize the aiming of the headlights more efficient. It will be carried out.

(Example) Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows a state in which a car body M is transported to a test area on a transport path 1 in order to test the directionality of the optical axis of a headlight L attached to the front end of the car. Attach the irradiation device 2 to the front of the headlight L and see! )j The irradiation light emitted from the device 2 is projected onto a screen 3 installed in front of the vehicle body M on the conveyance path 1.

First, to explain the structure of this irradiation device 2, as shown in an enlarged view in FIG. The case 6 has a rod-shaped vacuum pad 7 on the back side of the base 4 as a suction device capable of absorbing heat on the front surface of the headlight L of the automobile through a spherical support 7a. The vacuum butt 7 is installed so as to be floating, and is connected to an external vacuum device (not shown). By controlling the operation of the vacuum device, the vacuum butt 7 is removably attached to the front surface (glass) of the headlight L. It is made to do.

Further, the case 6 has three positioning leg members (two shown in the figure) 8, 8.8 protruding from the back surface of the base 4 around the vacuum butt 7, and each leg member 8. An engagement recess 8a is formed in the end face of the headlight as a positioning engagement part that removably engages with a protrusion L1 as a retaining part protruding from the front surface of the headlight.

Furthermore, inside the cylindrical portion 5 of the case 6, there is a light bulb 9 as a light emitting means for emitting irradiation light, and a condenser lens 10, 10 for converging the irradiation light emitted from the light bulb 9 and projecting it onto the screen 3. .10 are arranged respectively. Then, the engagement recess 8a of each leg member 8 is inserted into the headlight L.
When the light bulb 9 is engaged with the projection L1, the optical axis B of the light emitted from the light bulb 9 is set to correspond to the optical axis of the headlight L. The light bulb 9 is connected to an external power source (not shown), and is turned on by operating a switch.

Using the irradiation device 2 having the grooves as described above, the attachment state of the headlight L to the vehicle body M, that is, the headlight L
To test the directionality of the optical axis of It is stopped when the distance to the screen 3 reaches a predetermined value.

Next, the operator takes the irradiation device 2, aligns each positioning leg member 8 of the case 6 with the protrusion L1 of the headlight L of the vehicle body M, and inserts the engagement recess 8a into the headlight L.
the protrusion L'+.

Due to this engagement, the vacuum butt 7 is in pressure contact with the front surface of the headlight L, and the vacuum device is activated to create a negative pressure inside the vacuum butt 7, and the vacuum butt 7 is brought into pressure contact with the front surface of the headlight L. Let it be adsorbed to. Thereby, the lighting PA device 2 is positioned and attached to the front of the headlight in a predetermined attitude, and the optical axis B of the light bulb 9 is made to correspond to the optical axis of the headlight L.

Thereafter, the light bulb 9 is turned on by a switch operation, and the irradiated light from the light bulb 9 is focused by a condenser lens 10.degree. 10 and projected onto the screen 3.

In this state, the optical axis B of the light bulb 9 is aligned with the screen 3.
Check whether it matches the reference point above, and if it matches or is within the allowable range, it is assumed that the headlight L is properly attached to the vehicle body M, and the test ends, while the allowable V
! If the plate is removed, screw the multiple adjustment screws around the headlight L forward or backward to adjust the installed state of the headlight L to its tip axis, that is, the light bulb in position 2. The optical axis B of 9 is the screen 3
Adjust the vehicle body M so that it matches the reference point above.

After testing and optimizing the direction of the optical axis of the headlight L in this way, the light bulb 9 is turned off by operating the switch, and the vacuum device is stopped to create a negative pressure inside the vacuum butt 7. By releasing the
The irradiation device 2 is removed from the vehicle body M and used for the next test of the headlight L of a vehicle.

As described above, in this embodiment, the irradiation device 2 is attached to the helladolight L of an automobile (G), and the optical axis B of the light bulb 9 of the irradiation device 2 is
The operator can test the directionality of the optical axis of the headlight L by making it correspond to the optical axis of the headlight L and indirectly testing the directionality of the optical axis of the headlight L using the light emitted from the light bulb 9 without turning on the headlight L. This frees you from having to open and close the single door to turn on or off the headlight L every time you perform a test, and allows you to test with a simple operation from outside the vehicle, making it easier to properly aim the headlight L. can do well.

Moreover, the installation of the irradiation device 2 to the headlight L requires engaging the engagement recess 8a of the case 6 with the protrusion L1 on the front of the headlight L, then attaching the vacuum butt 7 to the front of the headlight. Since it can be carried out by a simple operation of adsorption, the efficiency of the above-mentioned work can be further improved.

In the above embodiment, the light bulb 9 is used as the light emitting means of the irradiation device 2, but the present invention is not limited to this, and it is also possible to use a laser generator, for example.

Further, in the above embodiment, the power supply for powering the light bulb 9 and the vacuum device for generating suction action on the vacuum butt 7 are both provided outside the case 6.
It is also possible to adopt a built-in type.

Further, in the above embodiment, the engaging portion provided on the front surface of the headlight L is configured with the protruding portion L1, and the positioning engaging portion on the case 6 side that engages with the protruding portion is configured with the engaging recess 8a. However, the present invention is not limited to this, and for example, instead of the protrusion L1, the irradiation device may be positioned at the front of the headlight by using a shaped portion corresponding to the outer shape of the front surface of the headlight L at the tip of the leg. Of course, various design changes can be made without changing the gist.

(Effects of the Invention) As explained above, according to the method of the present invention, the irradiation device is positioned in front of the headlight of the self-blocking vehicle so that the optical axis of the light emitting means corresponds to the optical axis of the headlight. The directionality of the optical axis of the headlight is tested based on the light irradiated by the light emitting means. It is possible to accurately test the directionality of the optical axis of the light, and the work efficiency can be improved.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an explanatory view schematically showing a test method for an automobile headlight, and FIG. 2 is an enlarged cross-sectional side view of an irradiation device. 2... Irradiation device, 3... Screen, 7... Vacuum butt, 8a... Engagement recess, 9... Light bulb, B
...Optical axis, L...Headlight, L+...Protrusion, M...Vehicle body. Patent applicant: Mazda Motor Corporation 6.・：
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Claims (1)

[Claims] (1) A suction tool that is removably adsorbed to the front surface of a headlight attached to a vehicle body, and a light emitting means that emits irradiated light;
An irradiation device is provided, the irradiation device having a positioning engagement portion that is removably positioned and engaged with an engagement portion provided on the front surface of the headlight so that the optical axis of the light emitting means corresponds to the optical axis of the headlight. , the irradiation device is attached to the headlight, the positioning engagement part is engaged with the engagement part on the front of the headlight, and the suction tool is attached to the front of the headlight by adsorption, and the irradiation light from the light emitting means is projected onto the screen. A method for testing an automobile headlight, the method comprising: testing the directionality of the optical axis of the headlight.