JPH0536301A - Lighting fixture for vehicle - Google Patents

Abstract

PURPOSE:To surely prevent the swinging of the optical axis caused by vibration or shock and eliminate the flickering of light distribution when a vehicle travels on a rough road by rigidly fixing a support leg on the lighting fixture side to a vehicle body after aiming is completed without giving hindrance to an aiming action at all during aiming when the optical axis of the lighting fixture is adjusted in the production line. CONSTITUTION:A lighting fixture for a vehicle is fitted with a lighting fixture main body to a vehicle body 17 adjustable for the optical axis via a spherical surface supporting means, a horizontal adjusting means, and a vertical aiming means, a bracing support leg 19 is provided integrally with the lighting fixture main body on the opposite side to the spherical surface support means, and a bracing system 20 allowing the movement of the support leg 19 during aiming and rigidly fixing the support leg 19 to the vehicle body 17 after aiming is completed is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle such as a headlamp in which one pivot, a left and right aiming screw, and an upper and lower aiming screw are supported at three points on the vehicle body so that their optical axes can be adjusted. Regarding lighting fixtures.

[0002]

2. Description of the Related Art Conventionally, as a vehicle lamp of the above-mentioned example, there is, for example, a headlamp disclosed in Japanese Utility Model Publication No. 62-47124. That is, a reflector (reflective mirror) is attached to a vehicle body such as a shroud side panel via a pivot as an optical axis adjusting fulcrum, a left and right aiming screw, and an upper and lower aiming screw so that the optical axis can be adjusted. A guide arm is integrally formed on the reflector so as to project therefrom, and an arcuate projection or arcuate groove for slidingly guiding the arcuate groove or circular projection on the guide arm is formed on the vehicle body side. It is a vehicle lamp to which a provided bracket is attached.

According to this conventional structure, the circular arc groove on the guide arm side and the circular arc projection on the bracket side, or the circular projection on the guide arm side and the circular arc concave groove on the bracket side slide against each other. While it has the advantage of being able to prevent rattling of the headlamps as much as possible due to vibrations when the vehicle is running, the sliding contact described above is merely a slide guide structure and a support structure based only on sliding resistance. It is extremely weak, and therefore, there is a problem in that the optical axis shakes due to vibrations and impacts when the vehicle travels on a bad road, causing flicker in the light distribution.

[0004]

The invention according to claim 1 of the present invention does not hinder the aiming operation at the time of aiming for adjusting the optical axis of the lamp on the production line, and when the aiming is completed, the lamp side is completed. By rigidly fixing the support legs of the vehicle to the vehicle body, it is possible to reliably prevent the optical axis from swaying due to vibration or impact when the vehicle is traveling on a bad road, and to provide a vehicular lamp that can eliminate the flicker of the light distribution. And

According to the second aspect of the present invention, in addition to the object of the first aspect of the invention, when the aiming is completed, the supporting leg on the side of the lamp is clamped by the bifurcated arm portion, and the clamping is performed. An object of the present invention is to provide a vehicular lamp that can reliably prevent the optical axis from shaking due to force.

According to a third aspect of the present invention, in addition to the object of the second aspect of the invention, a saw-toothed concavo-convex portion is formed on the inner surface of at least one of the forked arm portions. Accordingly, it is an object of the present invention to provide a vehicular lamp capable of reliably preventing the optical axis from swinging due to both the above-mentioned clamping force and the locking force of the uneven portion.

According to the invention described in claim 4 of the present invention, in addition to the object of the invention described in claim 3, the above-mentioned support leg is formed with a convex portion that meshes with the concave-convex portion of the arm portion. An object of the present invention is to provide a vehicular lamp that can more reliably prevent the optical axis from swinging due to the clamping force and the meshing force.

[0008]

According to a first aspect of the present invention, the lamp body is mounted on the vehicle body through the spherical surface supporting means, the left and right aiming means, and the upper and lower aiming means so that the optical axis can be adjusted. In a vehicle lamp, a support leg for swinging is integrally provided on the lamp body opposite to the spherical support means, and the support leg is allowed to move during aiming,
When the aiming is completed, the vehicular lamp is provided with a swinging mechanism for rigidly fixing the support leg to the vehicle body.

According to a second aspect of the present invention, in addition to the structure of the first aspect of the invention,
The bifurcated arm portion has an arm portion that holds the support leg in an openable and closable manner, and a restraint member that is attached to the vehicle body in a positionally adjustable manner. The bifurcated arm portion includes a hinge between the arm portions. The vehicle lamp is configured to be openable and closable, and includes a closing force transmitting portion that closes the arm portion when the restraint member is attached to the vehicle body and holds the support leg.

According to a third aspect of the present invention, in addition to the configuration of the second aspect of the invention, a saw-toothed concavo-convex portion is formed on at least one of the inner surfaces of the bifurcated arm portion facing each other. It is characterized by being a vehicle lighting device.

According to a fourth aspect of the present invention, in addition to the configuration of the third aspect of the invention, at least one convex portion corresponding to the concave-convex portion is formed on the surface of the supporting leg facing the concave-convex portion. It is characterized by being a vehicle lighting device.

[0012]

According to the first aspect of the present invention, the rocking mechanism for allowing the above-mentioned support leg to move during aiming and for rigidly fixing the above-mentioned support leg to the vehicle body upon completion of aiming is provided. Without any hindrance to the aiming operation, the above-mentioned supporting legs can be rigidly fixed to the vehicle body through the rocking mechanism when the aiming is completed. There is an effect that the shaking of the shaft can be surely prevented and the flicker of the light distribution can be eliminated.

According to the invention of claim 2 of the present invention,
At the time of aiming, the above-mentioned bifurcated arm portion of the restraint member is in a state of being opened via the hinge, so that the support leg is allowed to move along with the optical axis adjustment, and when the restraint member is attached to the vehicle body when aiming is completed, The bifurcated arm portion is closed by the action of the closing force transmission portion, and the support leg on the lamp side is clamped by the bifurcated arm portion. Therefore, the clamping force described above has the effect of reliably preventing the optical axis from shaking due to vibration or impact when the vehicle is traveling on a bad road, and eliminating the flicker of the light distribution.

According to the invention of claim 3 of the present invention,
Since the saw-toothed concavo-convex portion is formed on at least one of the inner surfaces of the above-mentioned bifurcated arm portion facing each other, the supporting leg is formed by both the clamping force by the bifurcated arm portion and the locking force by the concavo-convex portion. There is an effect that the optical axis can be held more firmly and the oscillation of the optical axis can be surely prevented.

According to the invention of claim 4 of the present invention,
Since at least one convex portion corresponding to the concave-convex portion of the bifurcated arm portion is formed on the support leg side, the convex portion meshes with the serrated concave-convex portion when the bifurcated arm portion is closed. Then
The holding leg and the meshing force described above can hold the supporting leg in a stronger position, and thus can more reliably prevent the optical axis from swinging.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. The drawings show a headlamp as an example of a vehicular lamp. In FIGS. 1, 2, and 3, a lamp unit 1 includes a bulb 2 at a substantially central portion of a reflector 2 as a reflecting mirror.
b) 3 is arranged, and the lens 5 is attached to the front side via the seal member 4.

A first rib 6, a second rib 7 and a third rib 8 are integrally formed on the back surface of the reflector 2 so as to project therefrom, and a spherical bearing 10 for receiving a sphere 9 is formed on the first rib 6. Then, a pivot 11 serving as a center point of the optical axis adjustment is formed by these both 9 and 10.

Further, the above-mentioned second rib 7 and third rib 8 are formed in a tubular shape, and screw members 12, 12 as shown in FIG. 2 (however, in FIG. 3 are provided in each of these tubular ribs 7, 8). (Not shown) is fixed, and a left and right aiming screw 14 for adjusting the left and right optical axes, which is rotatably provided on the bracket 13 side, and an upper and lower aiming screw 15 for adjusting the upper and lower optical axes. Each front end of the corresponding screw member 1
The lamp unit 1 described above is screwed into each of 2 and 12
Is supported at three points on the bracket 13 so that the optical axis can be adjusted.

The bracket 13 is attached to the shroud side panel 17 as a vehicle body by using the bolt 16, while the bolt 1 is attached to the anti-pivot side of the reflector 2 described above.
8, a supporting leg 19 for rocking is attached, and a rocking mechanism 20 is provided between the supporting leg 19 and the above-mentioned shroud side panel 17. The rocking mechanism 20 allows the support leg 19 to move when aiming for adjusting the optical axis of the lamp unit 1 on the manufacturing line, and rigidly fixes the support leg 19 to the vehicle body side when the aiming is completed. It is a mechanism.

The structure of the rocking stop mechanism 20 will be described in detail with reference to FIGS. 4, 5 and 6.

Attachment part 2 to the shroud side panel 17
1 and a bifurcated arm portion 22 for holding the support leg 19 openably and closably, a restraining member 23 integrally formed of synthetic resin is provided. A hole 24 is bored to form the shroud side panel 17
The restraint member 23 is attached to the shroud side panel 17 in a positionally adjustable manner by using both a bolt 25 welded and fixed to the nut 25 and a nut 26 screwed to the bolt 25.

Further, a notch 27 is formed from the rear side of the restraining member 23 between the base end portions of the above-mentioned bifurcated arm portions 22, 22, and the surplus portion of the notch 27 is provided on the upper and lower arm portions 22, Two
2 is configured as an opening / closing hinge 28, and the rear surface of the lower arm portion 22 is configured to close the rear surface of the lower arm portion 22 when the restraint member 23 is attached to the shroud side panel 17, thereby transmitting the closing force. It is set in the section 29.

Furthermore, the above-mentioned bifurcated arm portions 22, 22
Of the two inner surfaces facing each other, for example, the lower arm portion 2
On the inner surface of 2, the sawtooth-shaped uneven portion 30 is integrally formed,
On the surface of the above-mentioned support leg 19 on the side opposite to the concave-convex portion 30, the convex portion 1 having an inverted triangular cross section corresponding to the concave-convex shape.
9a is integrally formed, and the circular arc surface 19 is provided on the upper surface side of the support leg 19.
b is integrally formed. In addition, 31 in FIG. 1 and FIG.
Denoted at 34 are mounting portions on the vehicle body side.

The operation of the vehicular lamp having the above-mentioned structure is as follows.
This will be described below.

When the nut 26 is loosened during aiming for adjusting the optical axis in the manufacturing line, the bifurcated arms 22, 22 of the restraint member 23 are opened via the hinge 28 as shown in FIG. The support leg 19 is allowed to move when the optical axis is adjusted.

Then, when the left and right aiming screws 14 are operated, the optical axis emitted from the bulb 3 is moved to the pivot 1
1 can be adjusted in the horizontal direction with the fulcrum as the fulcrum, and when the vertical aiming screw 15 is operated, the optical axis can be similarly adjusted in the vertical direction with the pivot 11 as the fulcrum.

Upon completion of such an aiming operation, the nut 26 is fastened to attach the restraining member 23 to the shroud side panel 17, and as shown in FIG. 5, the closing force transmitting portion of the lower arm portion 22 is closed. Since 29 is pressed against the front surface of the panel 17, the lower arm portion 22 is closed via the hinge 28, and thus the bifurcated arm portion 2 is formed.
The upper and lower arm portions 22 and 2 are closed by closing the 2 and 22.
The support leg 19 located between the two is clamped and
The convex portion 19a on the lower surface meshes with the saw-toothed concave-convex portion 30 integrally formed on the inner surface of the lower arm portion 22.

As a result, the above-described support leg 19 is clamped by the forked arms 22 and 22 and the meshing force between the projections 19a and the projections and depressions 30 through the restraint member 23 to the vehicle body (shroud side panel). Since it is fixed to the rigid part in 17), there is an effect that the flicker of the light distribution can be completely eliminated by reliably preventing the vibration of the optical axis due to the vibration or the shock when the vehicle runs on the bad road.

7 to 11 show another embodiment of the vehicular lamp. In this embodiment, the support leg 39 is integrally formed on the side of the reflector 2 opposite to the pivot side, and the support leg 39 is formed.
Arc-shaped surfaces 39a and 39b are integrally formed along the longitudinal direction of the support leg 39 at the center of both upper and lower surfaces.

A rocking stop mechanism 40 is provided between the support leg 39 and the shroud side panel 17 described above. The rocking mechanism 40 allows the support leg 39 to move when aiming for adjusting the optical axis of the lamp unit 1 on the manufacturing line, and rigidly fixes the support leg 39 to the vehicle body side when aiming is completed. It is a mechanism.

That is, as shown in FIG. 9, the rocking mechanism 40 described above includes a holder 42 having bifurcated arms 41, 41 for holding the above-mentioned supporting leg 39 from both upper and lower sides with a predetermined holding force. And a surrounding portion 44 having a substantially U-shaped cross section with respect to the attachment portion 43 attached to the shroud side panel 17.
Swing base 45 that is integrally formed with the knob 4 for attaching and detaching
6 includes a spacer 48 integrally formed with a flexible insertion piece 47.

A through hole 51 for attaching the rocking base 45 to the shroud side panel 17 is formed by using a bolt 49 and a nut 50 at the center of the upper portion of the rocking base 45 for mounting the rocking base 45. A locking piece 52 for locking the rear surface of the shroud side panel 17 through the opening 17 a of the shroud side panel 17 is integrally formed at the lower end of 43.

The front surface 44a of the surrounding portion 44 of the rocking base 45 is linearly cut out from its lower end to its upper portion to form a guide groove 53 for allowing the holder 42 to move up and down during aiming. Surrounding part 44
A saw-toothed concavo-convex portion 54 is integrally formed on the inner surface facing the mounting portion 43 in FIG.

On the other hand, in the holder 42, the arms 41, 41 are integrally formed on the front surface of a substantially rectangular holder base 55, and the rear surface of the holder base 55 has a width smaller than the groove width of the guide groove 53. A boss portion 57 is integrally formed through the neck portion 56, and a surface of the boss portion 57 facing the above-mentioned sawtooth-shaped uneven portion 54 has sawtooth-shaped uneven portions 58 and 58 having a shape corresponding to the uneven portion 54. Are integrally formed.

The locking piece 52 of the rocking base 45 is locked in the opening 17a of the shroud side panel 17, and the upper end of the rocking base 45 is fixed to the panel 17 by the bolt 49 and the nut 50. Rocking base 4
From the lower end opening 45a of 5 to the empty space 59 in the base 45,
A part of the boss portion 57 and the neck portion 56 of the holder 42 is inserted, and the supporting leg 39 is clamped from above and below by a predetermined clamping force by the above-mentioned non-openable bifurcated arms 41, 41 of the holder 42. This is done as shown in FIG.

In the state shown in FIG. 11, a sufficient clearance is formed between the boss portion 57 and the concave-convex portion 58 and the space 59, so that the holder 42 holding the support leg 39 in the guide groove 53. It is possible to move up and down along.

Therefore, when the left and right and upper and lower aiming screws 14 and 15 (see FIG. 1) are operated under the state shown in the figure, the optical axis emitted from the bulb 3 (see FIG. 1) is pivot 11 (see FIG. 1). (See FIG. 1) is used as a fulcrum to adjust the horizontal direction and the vertical direction.

Upon completion of such an aiming operation, the above-mentioned spacer 4 is passed through the upper end opening 45b of the rocking base 45.
When the insertion piece 47 of No. 8 is inserted between the front surface of the mounting portion 43 and the rear surface of the boss portion 57, as shown in FIG. 10, the sawtooth-shaped uneven portions 58, 58 on the holder 42 side are sawtooth on the rocking base 45 side. The above-mentioned spacer 48 holds the meshed state by meshing with the concave-convex portion 54.

As a result, under the condition that the support leg 39 is clamped by the clamping force of the bifurcated arms 41, 41, the support leg 39 is passed through the rocking mechanism 40 to the vehicle body (shroud side panel 17). It is possible to fix it to a rigid body, and it is possible to surely prevent the optical axis from shaking due to vibration or impact when the vehicle runs on a bad road, and to completely eliminate the flicker of the light distribution.

In the correspondence between the structure of the present invention and the above-mentioned embodiment, the spherical surface supporting means of the present invention corresponds to the pivot 11 of the embodiment, and similarly, the left and right aiming means are the same.
The left and right aiming screws 14 correspond, the upper and lower aiming means correspond to the upper and lower aiming screws 15, and the lamp body corresponds to the lamp unit 1. However, the present invention is limited only to the configuration of the above-described embodiment. is not.

[Brief description of drawings]

FIG. 1 is a front view showing a vehicle lamp of the present invention.

FIG. 2 is a lateral cross-sectional view of a vehicle lamp.

FIG. 3 is a vertical cross-sectional view of a vehicle lamp.

FIG. 4 is a perspective view of a restraint member.

FIG. 5 is a cross-sectional view showing the rigid fixing when aiming is completed.

FIG. 6 is a cross-sectional view showing a support leg movable permitting state during aiming.

FIG. 7 is an enlarged front view of a main part showing another embodiment of the vehicular lamp of the present invention.

8 is a lateral cross-sectional view of the vehicle lamp of FIG.

FIG. 9 is an exploded perspective view of a rocking stop mechanism.

FIG. 10 is a cross-sectional view showing the rigid fixing after the aiming is completed.

FIG. 11 is a cross-sectional view showing a support leg movable permitting state during aiming.

[Explanation of symbols]

1 ... Lamp unit 11 ... Pivot 14 ... Left and right aiming screws 15 ... Top and bottom aiming screw 17 ... Shroud side panel 19 ... Support legs 19a ... convex portion 20 ... Rocking stop mechanism 22 ... Arm part 23 ... Restraint member 28 ... Hinge 29 ... Closing force transmission section 30 ... Uneven portion 39 ... Support legs 40 ... Rocking stop mechanism

Claims (4)

[Claims] 1. A vehicular lamp in which a lamp body is attached to a vehicle body through one spherical supporting means, a left and right aiming means, and an upper and lower aiming means so that its optical axis can be adjusted, and the side opposite to the spherical supporting means. The lamp body for vehicles is provided with a support leg for vibration prevention integrally with the main body of the lamp, allows the support leg to move when aiming, and fixes the support leg rigidly to the vehicle body when aiming is completed. 2. The swing stop mechanism has a bifurcated arm portion that holds the support leg so as to be openable and closable, and includes a restraint member that is mounted to the vehicle body in a positionally adjustable manner. The arm portion is configured to be openable and closable via a hinge between the arm portions, and the arm portion is closed when the restraint member is mounted on the vehicle body, and a closing force transmission portion that clamps the support leg is provided. Vehicle lights. 3. The vehicular lamp according to claim 2, wherein a saw-toothed concavo-convex portion is formed on at least one of the inner surfaces of the bifurcated arm portion facing each other. 4. The vehicular lamp according to claim 3, wherein at least one convex portion corresponding to the concave-convex portion is formed on a surface of the support leg facing the concave-convex portion.