JPH025443Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The invention relates to an aiming device for adjusting the optical axis of a headlight of a four-wheeled motor vehicle, a motorcycle, etc.
More specifically, there is a bracket attached to the fixed member side so as to be swingable about one point, an aiming screw screwed to the bracket to swing the bracket, and one end connected to the reflector side and the other end. The present invention relates to an aiming device for an automobile headlamp, which comprises an operating rod that projects from the lamp body and is connected to the bracket.

There are two types of methods for adjusting the optical axis of automobile headlights: a movable reflector type that moves the reflector relative to the light body, and a movable lamp unit type that moves the lamp unit relative to the vehicle body. Basically, both types are the same, and in this specification, movable members such as reflectors and lamp units are referred to as movable members, and members such as lamp bodies and vehicle bodies that support the movable members are referred to as fixed members.

<Prior art> This type of aiming device has an aiming screw that is screwed to swing a bracket in an arc, and the arcuate motion of the bracket is transmitted to an operating rod to convert it into linear motion. The optical axis is adjusted by moving movable members such as reflectors.

However, since the operating rod is installed so that it passes through the lamp body and moves back and forth relative to the lamp body, it is inconvenient that rainwater can easily enter the lamp body through the through hole that protrudes the other end of the operating rod. It was hot.

<Problems to be solved by the invention> The present invention has been developed in view of these conventional inconveniences, and it is possible to achieve waterproofing from the through hole through which the other end of the operating rod protrudes, and also to prevent light It is an object of the present invention to provide an aiming device for an automobile headlamp that is free from the possibility of excessive force being applied to a reflecting mirror by mistake during axis adjustment.

<Means for solving the problems> The aiming device of the present invention that achieves the above purpose has the following features:
A bracket is attached to the fixed member side so as to be able to swing freely around one point, an aiming screw is threadedly connected to the bracket and swings the bracket, and one end is connected to the reflector side and the other end is attached to the lamp body. In the aiming device for an automobile headlamp, the aiming device includes an operating rod that protrudes from the bracket and is connected to the bracket. , is characterized in that a collar plate having approximately the same diameter as the outer diameter of the peripheral wall is attached to the other end of the operating rod.

<Example> Hereinafter, an example of implementing the present invention will be described based on the drawings.

Although the illustrated embodiment shows a movable reflector type headlamp, it should be readily understood that the present invention is also applicable to a movable lamp unit type headlamp.

In the figure, reference numeral 1 indicates a movable member which is a reflecting mirror, and is supported by a fixed member 2a which is a lamp body with one fulcrum rod 3 and one or two operating rods 4 so that the optical axis can be adjusted freely. . Then, a bulb 20 is installed inside the lamp body 2a, and a lens 21 is installed on the front side to constitute one headlamp A.

The operating rod 4 has one end 4a fitted and connected to a seat 5 attached to the reflector 1, and the other end 4b protrudes from the through hole 14 of the lamp body 2a, and is attached to the fixed member 2b side which is the vehicle body. It is brought into contact with and connected to a bracket 6 which is mounted so as to be swingable about one point. The other end 4b of the operating rod 4 is formed into a spherical shape and attached to the bracket 6.
At the same time, a flange plate 7 is attached to the other end, and a spring 8 is installed between the flange plate 7 and the lamp body 2a to urge the operating rod 4 toward the bracket 6. The other end 4b is always pressed into contact with the bracket 6.

The through hole 14 of the lamp body 2a through which the other end 4a of the operating rod 4 protrudes is formed to have an inner diameter that prevents the operating rod 4 from wobbling, and has a reinforcing boss 1 on its outer edge.
4a are formed to protrude from the same body. And through hole 1
4, a peripheral wall higher than the reinforcing boss 14a is formed in a surrounding manner so as to protrude from the same body as the lamp body 1a.

The flange plate 7 is formed into a disk shape with approximately the same diameter as the outer diameter of the peripheral wall 15 surrounding the through hole 14 of the lamp body 2a, and is attached to the other end of the operating rod 4 in a loose manner, and is attached to the push-on fixture. Support with 16. The push-on fixing 16 is engaged with an annular groove 17 formed at the other end of the operating rod 4, and as shown in FIG.
Inclined portion 17a that abuts the corner of the mounting portion 16a of No. 6
to form. In this way, by forming the inclined part 17a that makes the corner of the mounting part 16a of the push-on fixing come into contact with the annular groove 17, even if the push-on fixing 16 is pressed by the spring 8, the mounting part 16a There is no risk that the rod will sink into the annular groove 17 and be deformed parallel to the axis of the operating rod 4.
As a result, the springiness of the mounting portion 16a can be permanently maintained.

Bracket 6 is fixed member 2 of the vehicle body.
It is composed of a mounting part 6a that is pivotally attached to the shaft 6b, a connecting part 6b that screws and connects the aiming screw 9, and a pressing part 6c that operates the operating rod 4. Mounting part 6
A is attached to the fixed member 2b with a pivot 10 so that the entire bracket 6 can swing around the pivot 10. The connecting portion 6b is formed at the lower part of the mounting portion 6a and is inclined slightly upward so as to intersect with the aiming screw 9 at a substantially right angle.
A self-locking nut 11 is unrotatably fixed to b, and an aiming screw 9 is screwed and connected to the self-locking nut 11. Also,
The pressing portion 6c is formed on the side of the mounting portion 6a, approximately parallel to the axial direction of the aiming screw 9 (see Fig. 5), and its central portion is bent into a substantially dogleg shape. It is located in front of the other end 4b of the rod 4. By forming the pressing portion 6c into a substantially dogleg shape, the strength of the pressing portion 6c can be improved. A holder 12 for directly abutting the other end 4b of the operating rod 4 is fixedly installed on the pressing portion 6c.

The holder 12 is made of a resin material such as Diuracon and is formed into an elongated rectangular shape from the front that is approximately the same shape as the pressing part 6c of the bracket 6.
The center portion of the operating rod 4 is formed into a substantially dogleg shape on the side so that the other end 4a of the operating rod 4 protruding from the headlamp A side moves substantially when assembled to the headlamp A side. A guide groove 12a and a spherical recess 12b are formed on the front side of the holder 12, and mounting feet 1 are formed on the back side.
2c is formed in a protruding manner and is fixedly attached to the pressing portion 6c of the bracket 6 before the headlamp A is attached to the vehicle body 2b. When attaching the headlight A to the vehicle body 2b, the guide groove 12a allows the other end 4b of the operating rod 4, which is biased toward the pressing portion 6c of the bracket 6 previously attached to the vehicle body 2b side, to move into the spherical recess 12b. This is a groove for guiding the inside of the holder 12, and is formed across the upper half of the surface side of the holder 12. This guide groove 12a
When assembling the headlight A to the vehicle body 2b, due to the presence of the
moves in sliding contact with the guide groove 12a at a nearly right angle, and comes to engage and abut within the spherical recess 12b of the holder 12, thus moving the headlight A into the vehicle body 2b.
There is no risk of deformation even if excessive force is applied to the other end 4a of the operating rod when assembling it.

Further, the spherical recess 12b is located at the other end 4b of the operating rod 4.
This is to allow the operating rod 4 to follow the swinging motion of the bracket 6 by directly contacting and connecting them, and is formed into a long groove shape along the longitudinal direction when viewed from the front, and a spherical shape when viewed from the side. It is formed in a circular arc shape and is formed in the lower half of the front surface side of the holder 12 (see FIGS. 6 and 7). In this way, by installing the holder 12 on the bracket 6, forming the spherical recess 12b in the holder 12, and connecting the other end 4a of the operating rod 4 to this spherical recess, the bracket 6 is installed. Even when the bracket swings in an arc around the pivot shaft 10, the other end 4a of the operating rod always hits the spherical concave surface of the holder almost at right angles, so that the arc swing of the bracket is prevented. The linear motion of the operating rod in the longitudinal direction follows suit, allowing smooth optical axis adjustment.

Further, the aiming screw 9 for swinging the bracket 6 has its threaded portion 9a threadedly connected to a self-locking nut 11 attached to the connecting portion 6b of the bracket 6, and the head 9b side is connected to the support 13. It is rotatably supported on the fixed member (vehicle body) 2b side via.

Next, to explain the assembly order of the aiming device of the present invention, the bracket 6 is swingably attached to the vehicle body 2b, which is a fixed member, and the aiming screw 9 is screwed and connected to the connecting portion 6b of the bracket 6. At the same time, the holder 12 is attached to the pressing part 6c. On the other hand, the operating rod 4 is connected to the reflecting mirror 1, which is a movable member installed in the lamp body 2a, and the other end 4b of the operating rod 4 is made to protrude from the lamp body 2a. Next, move this headlight A along the imaginary line X in FIG.
As shown in , it is assembled to the vehicle body 2b by pushing it in using its lower side as a fulcrum. At this time, the other end 4b of the operating rod 4 protruding from the lamp body 2a is attached to the holder 12.
The spherical recess 12 is guided by the guide groove 12a of the
b (see Fig. 3), and the assembly is now complete.

When adjusting the optical axis of the headlight, when the aiming screw 9 is screwed, the bracket 6 adjusts to the axis 1 according to the screw pitch of the aiming screw 9.
It oscillates in an arc shape in the front and back direction with the center at 0.
The swinging motion of the bracket 6 is transmitted to the other end 4b of the operating rod 4 which is in contact with and connected to the spherical recess 12b of the holder 12, thereby causing the operating rod 4 to move in the front-rear direction. Then, the reflecting mirror 1 connected to one end 4a of the operating rod 4 moves back and forth around the fulcrum rod 3, and the optical axis is adjusted.

<Effects of the invention> Since the aiming device of the automobile headlamp of the present invention is constructed in this way, even if there is some gap between the operating rod and the through hole of the lamp body that protrudes and supports it, the through hole can be fixed. The peripheral wall that surrounds and protrudes around the periphery can prevent rainwater from entering from the outside, and can ensure waterproofing from the through holes.

Moreover, when adjusting the optical axis, if the aiming screw is screwed too far and the operating rod is moved too far toward the reflector, the flange plate attached to the operating rod will come into contact with the waterproof peripheral wall and prevent further movement. Therefore, damage to the reflecting mirror and generation of distortion can be prevented.

Therefore, the intended purpose can be achieved.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention, and FIG. 1 is a longitudinal side view, FIG. 2 is a sectional view taken along line 2-2 in FIG. 1, and FIG.
The figure is a sectional view taken along the line 3-3, Figure 4 is a sectional view of the operating rod with the bracket advanced to its limit, and Figure 5
The drawings are a sectional view taken along the line 5-5 in FIG. 2, FIG. 6 is a front view of the holder, and FIG. 7 is a side view of the same. In the figure, 1 is a reflecting mirror, 2a is a fixed member (light body),
2b is a fixed member (vehicle body), 4 is an operating rod, 4a is one end thereof, 6 is a bracket, 7 is a collar plate, 9 is an aiming screw, 10 is a pivot, 14 is a through hole, 15
is the surrounding wall.

Claims (1)

[Scope of utility model registration request] A bracket is attached to the fixed member side so as to be able to swing freely around one point, an aiming screw is threadedly connected to the bracket and swings the bracket, and one end is connected to the reflector side and the other end is attached to the lamp body. In the aiming device for an automobile headlamp, the aiming device includes an operating rod that protrudes from the bracket and is connected to the bracket. An aiming device characterized in that a collar plate having approximately the same diameter as the outer diameter of the peripheral wall is attached to the other end of the operating rod.