JPS5813525Y2 - automotive headlights - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to improvements in automobile headlamps.

Automobile headlights tend to become larger, and larger reflectors often require deeper reflectors for light distribution design.

Since there is a limit to deep drawing using a press in order to increase the depth of the reflecting mirror, a method of interposing a second reflecting mirror between the front lens and the reflecting mirror is considered.

This second reflecting mirror is intended to make the reflecting mirror with a predetermined light distribution performance appear larger, and its inner surface is molded from synthetic resin material in consideration of cost reduction and weight reduction, and the light distribution performance is not an issue. An aluminum reflective layer is formed on the side by a conventional method such as vapor deposition.

However, in conventional headlights of this type, there were not only problems in terms of appearance, such as a difference in level between the joint surface of the reflector and the second reflector, and the adhesive appearing to protrude from the inside and outside. The disadvantage was that it was difficult to obtain rigidity at the joint.

The present invention eliminates these drawbacks of conventional products, has a good appearance,
Further, it is an object of the present invention to provide a headlamp for an automobile that is excellent in rigidity, has little variation in light distribution, and is stable in quality.

Hereinafter, an example of the implementation of the present invention will be explained with reference to the drawings. In the figure, 1 is a front lens, 2 is a reflecting mirror that reflects the light of the pulp 3 forward and has the required light distribution performance, and this reflecting mirror 2 A second reflecting mirror 4 is interposed between the front lens 1 and the front lens 1.

The second reflecting mirror 4 is formed into a cylindrical shape from a synthetic resin material, and has an aluminum reflective layer applied to its inner surface, and has a front lens edge 1' on its upper edge, that is, the joint portion 4' with the front lens 1. A concave groove 5 for joining is formed, and an inner wall 6a and an outer wall 6b are separately formed at the lower edge, that is, the joining part 4' with the reflecting mirror 2, and both joining parts 4'.

4' to the front lens 1 and reflector 2 with adhesive 7°8
Secure with adhesive.

The joint part A' between the second reflecting mirror 4 and the reflecting mirror 2 is formed by bifurcating an inner wall 6a and an outer wall 6b, and aligns the inner surface 6a' of the inner wall 6a with the inner surface 2' of the reflecting mirror 2. The outer surface 6b' of the outer wall 6b is aligned with the inner surface of the rising portion 2a of the flange portion 2a of the reflecting mirror 2 to form a joint portion l.
The lower surface of the reflector is brought into contact with the upper surface of the flange portion 2a of the reflecting mirror, and the adhesive 8 is stored in the cavity portion 9 constituted by the inner wall 6a, the outer wall 6b, and the flange portion 2a.

Note that even if the entire inner surface of the second reflecting mirror 4 is formed flush with the inner surface 2' of the reflecting mirror 2 as shown in the illustrated example, the second reflecting mirror 4
The inner surface 6a' of the inner wall 6a of the mirror 2 is reflected only by the inner surface 6a' of the inner wall 6a.
It may be formed in a continuous plane along the same direction.

Furthermore, notches 10 are formed on the lower end outer surface 6b' side of the outer wall 6b, and concave cutouts 11 are formed at appropriate intervals on the inner surface 6b side, so that the adhesive 8 in the cavity 9 can be applied to the reflecting mirror 2. The rising part of the flange part 2a! The purpose is to prevent the adhesive from protruding further and to improve the adhesion effect.

Further, the lower outer surface 6b' of the outer wall 6b may be brought into contact with the rising portion of the flange portion 2a of the reflecting mirror as shown in FIG. 2, or may be separated as shown in FIG.

In this way, the present invention branches the second reflecting mirror into an inner wall and an outer wall at the joint portion between the second reflecting mirror and the reflecting mirror, and makes the inner surface of the inner wall follow the inner surface of the reflecting mirror, and the inner wall and the outer wall. Since the adhesive is stored in the cavity made up of the outer wall and the flange of the reflector, the inner wall serves as a reinforcement and has excellent rigidity, so even if the front lens becomes larger, the second reflector will remain stable. Durability can be maintained in an extremely stable state without deformation, and therefore the quality is stable with little variation in light distribution.

Moreover, since the adhesive is stored between the inner wall and the outer wall of the second reflecting mirror, the adhesive does not protrude to the inside or outside of the reflecting mirror, and there is no difference in level between the inner surfaces of the reflecting mirror and the second reflecting mirror. Coupled with the elimination of the light, the light distribution performance is improved, and the appearance is also improved, which improves the commercial value.

In addition, no special parts are required by simply changing the shape of the joint of the second reflecting mirror, and the reflecting mirror and the second reflecting mirror can be connected by simply covering the second reflecting mirror and the front lens in sequence and pressing the lens surface. The front lenses can be bonded to each other in a stable state, and manufacturing and assembly thereof can be facilitated and inexpensive.

Therefore, the intended purpose can be achieved.

[Brief explanation of drawings]

The drawings show one embodiment of an automobile headlamp according to the present invention, FIG. 1 is a sectional view, FIG. 2 is an enlarged view of part A in FIG. 1, and FIG. 3 is a sectional view of main parts showing another embodiment. It is a diagram. In the figure, 1 is a front lens, 2 is a reflecting mirror, 4 is a second reflecting mirror,
6a is an inner wall, 6b is an outer wall, and 7 and 8 are adhesives.

Claims (1)

[Scope of utility model registration request] A second reflecting mirror 4 is interposed between the front lens 1 and the reflecting mirror 2, and the second reflecting mirror 4 is connected to the inner wall 6a and the outer wall 6b at the joint part A between the second reflecting mirror 4 and the reflecting mirror 2. branch,
The inner surface 6a' of the inner wall 6a is aligned with the inner surface 2' of the reflecting mirror 2, and the adhesive is stored in the cavity 9 formed by the inner wall 6a, the outer wall 6b, and the flange part 2a of the reflecting mirror 2. An automobile headlamp characterized by: