JPS5826405Y2 - automotive headlights - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in an automobile headlamp in which a reflector is attached to a lamp body so that the optical axis can be freely adjusted.

In the conventional headlamp of this kind, as shown in FIG. Since the optical axis was adjusted by screwing into a double-sided nut 12 attached to the lamp, it was not possible to ensure waterproofing between the lamp body and the optical axis adjustment rod, and at the same time, the spherical seat of the optical axis adjustment rod and the reflector could not be secured. There was also a drawback that the retaining part of the device easily rattled during use, and in severe cases could come off.

Moreover, it is necessary to use a double-sided nut with a special shape and an optical axis adjustment rod, which has the disadvantage of increasing costs, and the knob part 3'' of the optical axis adjustment rod is small and difficult to grip, so another large knob is required. There was a drawback that the cost would be even higher if it was installed.

In view of these inconveniences and disadvantages of conventional products, the present invention is expected to provide reliable waterproofing between the lamp body and the optical axis adjustment rod, is easy to operate the optical axis adjustment, and can be used as an optical axis adjustment rod. It is an object of the present invention to provide a headlamp for an automobile that can use an ordinary bolt rod and reduce costs.

An example of implementing the present invention will be described below based on the drawings.

The reflector 1 has one fulcrum on the lamp body 2 and two for vertical and horizontal directions.
The mounting is supported by the optical axis adjustment rod 3 of the book so that the optical axis can be freely adjusted.

That is, a flange 1a is integrally provided on the back side of the periphery of the reflector 1, and a supporting fixed leg 5 is attached across the flange 1a and the lamp body 2, and an elastic material such as rubber is attached between the supporting fixed leg 5 and the flange 1a. The pivot point is formed by interposing a bush 4 having a fulcrum, and an optical axis adjusting rod 3 passed through from the back side of the lamp body 2 is screwed and connected to a self-locking 6 attached to the flange 1b of the reflector 1 to establish a moving point. It consists of

The optical axis adjustment rod 3 is an ordinary bolt rod with a head 3a, and is rotatably inserted from the back side of the lamp body 2 to attach the reflector 1.
The head 3a is screwed and connected to a self-locking nut 6 attached to the lamp body 2, and the head 3a is made to protrude to the back side of the lamp body 2.

The head 3a of the optical axis adjustment rod 3 is formed into a polygonal shape such as a hexagon or a square, or a non-circular shape other than a perfect circle such as an ellipse or knurling, and a driver locking groove 7 in which a driver tool can be locked on the top surface. An adjustment knob 8 having an insertion opening 8a for a driver tool is separably fitted into the head 3a.

The adjustment knob 8 is molded into a bottomed cylindrical shape of a suitable size from synthetic resin material, etc., and its interior is used as an insertion opening 8a for a screwdriver tool, and the shape of the inner wall matches the head 3a of the optical axis adjustment rod. The optical axis adjustment rod 3 is inserted through the driver tool insertion opening 8a, and the head 3a of the optical axis adjustment rod 3 is fitted and latched to the inner bottom, and the outer bottom of the adjustment knob 8 is attached to the lamp body. 2.

A waterproof gasket 9 is interposed between the adjustment knob 8 and the lamp body 2 to prevent the optical axis adjustment rod 3 from coming off, and a spring 10 is interposed between the lamp body 2 and the self-locking nut 6 of the reflector 1. intervene.

Since the present invention is constructed in this manner, it has the following effects.

■ A waterproof gasket is installed between the adjustment knob and the lamp body, which, together with the action of the spring installed between the lamp body and the reflector, improves the waterproofness between the lamp body and the optical axis adjustment rod. can be reliably achieved.

■ The cylindrical adjustment knob is fitted onto the head of the optical axis adjustment rod, so there is no need for special parts or machining processes to attach the adjustment knob to the optical axis adjustment rod, making it easy to separate. In addition to being able to use an ordinary bolt rod as the optical axis adjustment rod, the cost of parts can be reduced and assembly work can be made more efficient, making it possible to provide the device at a lower price overall.

■ An adjustment knob with an appropriate size and shape is attached to the optical axis adjustment rod, making it easy to adjust the optical axis.At the same time, there is a screwdriver locking groove on the top of the head of the optical axis adjustment rod. Adjustments can also be made with tools.

■ The optical axis adjustment rod is threaded and connected to a self-locking nut that is inserted from the back side of the lamp and attached to the reflector, so the optical axis can be adjusted reliably and smoothly without using expensive double-sided nuts. At the same time, there is no fear that the optical axis will go awry or the reflecting mirror will wobble after adjustment.

Therefore, the intended purpose can be achieved.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional plan view showing an embodiment of an automobile headlamp according to the present invention, and Fig. 2 is a cross-sectional plan view of a conventional product. In the figure, 1 is a reflector, 2 is a lamp body, and 3 is an optical axis adjustment. 6 is a self-locking nut, 7 is a screwdriver locking groove, 8 is an adjustment knob, 9 is a waterproof gasket, and 10 is a spring.

Claims (1)

[Scope of utility model registration request] In an automobile headlamp in which a reflector 1 is attached to a lamp body 2 so that the optical axis can be freely adjusted, the head 3a of the optical axis adjustment rod 3 is formed into a non-circular shape, and a screwdriver locking groove 7 is provided on the top surface of the head 3a. The adjustment knob 8 is formed into a cylindrical shape with a bottom to form an insertion opening 8a, and the optical axis adjustment rod 3 is inserted through the insertion opening 8a, and the head 3a of the optical axis adjustment rod 3 is inserted into the adjustment knob. 8, the optical axis adjustment rod 3 is passed through from the back side of the lamp body 2, and is screwed and connected to the self-locking nut 6 attached to the reflector 1, so that the adjustment knob 8 and the lamp body 2 are connected by screwing. A headlamp for an automobile in which a waterproof gasket 9 is provided between the lamp body 2 and the reflector 1, and a spunong 10 is interposed between the lamp body 2 and the reflector 1.