JPH025441Y2 - - 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 able to swing freely about one point, an aiming screw that is threadedly connected to the bracket to swing the bracket, and one end of which is connected to the movable member side and the other end. The invention relates to an aiming device for an automobile headlamp, which comprises an operating rod which is connected to the bracket in contact with 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 rotates an aiming screw to swing a bracket in an arc, transmits the arcuate motion of the bracket to an operating rod, converts it into linear motion, and converts it into linear motion via the operating rod. The optical axis is adjusted by moving the movable member.

However, although it is fine as long as the other end of the operating rod always contacts the bracket at right angles, in reality, the position where the other end of the operating rod contacts and connects is offset from the center of swing of the bracket. When the bracket is oscillated to adjust the optical axis, the contact angle of the operating rod against the bracket changes constantly and rarely hits at right angles, and as a result, the back-and-forth movement of the operating rod does not match well with the swinging motion of the bracket. This makes it difficult to follow the optical axis, making it difficult to smoothly adjust the optical axis, and the actuating rod or bracket has the inconvenience of being easily deformed due to excessive force.

<Problems to be solved by the invention> The present invention has been made in view of these conventional inconveniences. To provide an aiming device for an automobile headlamp that can smoothly adjust the optical axis without applying excessive force to the headlamp.

<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 swingable about one point, an aiming screw is screwed onto the bracket and retarded to swing the bracket, and one end is connected to the movable member side and the other end is connected to the movable member side. In an aiming device for an automobile headlamp, which is composed of an operating rod that is connected to and abuts on a bracket, a holder having a spherical recess formed therein for abutting and connecting the other end of the operating rod is installed on the bracket. It is characterized by the fact that it was made possible.

<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 movable member 1, and the other end 4b protrudes from the fixed member (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 so as to be connected to the bracket 6, and a flange plate 7 is attached to the other end, and the flange plate 7 and the fixing member (light body) 2a are connected to each other. A spring 8 is installed between them to urge the operating rod 4 toward the bracket 6, and the other end 4b is always connected to the bracket 6 in a resilient manner.

Bracket 6 is fixed member 2 of the vehicle body.
It is composed of a mounting part 6a which is pivotally attached to b, a connecting part 6b which threadably connects the aiming screw 9, and a pressing part 6c which 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 the aiming screw 9 at a substantially right angle.
A self-locking nut 11 is unrotatably fixed to b, and the self-locking nut 11
Connect the aiming screw 9 with the screw. Further, the pressing portion 6c is formed at a side position of the mounting portion 6a, approximately parallel to the axial direction of the aiming screw 9 (a fifth
(see figure), and its central portion is bent into a substantially dogleg shape, and is positioned in front of the other end 4b of the operating 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 this pressing portion 6c.

The holder 12 is made of a resin material such as Dieracon, 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. Also, the spherical concave 12
b is for directly abutting and connecting the other end 4b of the operating rod 4 so that the operating rod 4 can follow the swinging motion of the bracket 6, and has a long groove along the longitudinal direction when viewed from the front. It is formed into a spherical shape (arc shape) when viewed from the side, and is formed in the lower half of the front surface side of the holder 12 (see FIGS. 6 and 7).

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 portion 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 completed.

When adjusting the optical axis of the headlight, when the aiming screw 9 is rotated, the bracket 6 is adjusted to the axis 1 according to the rotation 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 movable member (reflector) 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 for the automobile headlamp of the invention is constructed in this way, when adjusting the optical axis of the headlamp, the longitudinal linear movement of the operating rod can successfully follow the arcuate swinging movement of the bracket. This allows smooth optical axis adjustment. That is, a holder is installed on the bracket, a spherical recess is formed in the holder, and the other end of the operating rod is abutted and connected to this spherical recess, so that the bracket swings in an arc around the pivot. Even when the actuating rod operates, the other end of the actuating rod always touches the spherical concave surface of the holder at a nearly right angle, so that the linear movement of the actuating rod in the longitudinal direction follows the arcuate swinging movement of the bracket. Therefore, smooth optical axis adjustment can be performed without applying excessive force to the bracket or the operating rod.

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 the line 2-2 of 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 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 movable member (reflector), 2a is a fixed member (light body), 2b is a fixed member (vehicle body), 4 is an operating rod, 4a is one end, 4b is the other end, 6 is a bracket, and 9 is a Aiming screw, 10 is axis,
12 is a holder, and 12b is a spherical recess.

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 about one point, an aiming screw is threadedly connected to the bracket and swings the bracket, and one end is connected to the movable member side and the other end is attached to the bracket. In the aiming device for an automobile headlamp, the aiming device comprises an operating rod that is connected to and connected to the bracket, and a holder having a spherical recess for connecting the other end of the operating rod is installed in the bracket. An aiming device that features: