JPS587525Y2 - automotive headlights - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in an automobile headlamp in which the front lens is fixed to the vehicle body and the optical axis is adjusted by moving a reflector, such as in a vehicle proper headlamp.

Conventionally, in this type of headlamp, as shown in FIG. 4, the tip 3' of the optical axis adjustment lever 3 is pressed into engagement with the spherical seat 14 provided on the rear surface of the reflector 1, and the tip of the optical axis adjustment lever is turned on. Since the optical axis was adjusted by screwing it into the double-sided nut 15 attached to the body, the part where the optical axis adjustment lever and the spherical seat on the reflector side not only became loose during use, but also caused the connector to be connected. It sometimes came off when it was exposed to strong vibrations.

Moreover, it is not possible to ensure waterproofing between the lamp body and the optical axis adjustment lever, and at the same time, the cost is high due to the use of a specially shaped double-sided nut.

This invention has a simple structure that allows the reflector to be firmly attached to the lamp body without wobbling or coming off, allowing for reliable optical axis adjustment, and providing an inexpensive automobile headlamp that can be expected to have reliable waterproof properties. This is what we intend to provide.

Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. The reflecting mirror 1 swings at one fulcrum O and two moving points l and m relative to the lamp body 2 so as to adjust the optical axis. It is freely supported and is moved by vertical and horizontal optical axis adjustment levers 3 inserted from the rear surface of the lamp body 2 to adjust the optical axis.

That is, a spherical seat 4 is provided at the rear surface of the peripheral edge 1' of the reflector, a supporting fixed leg 5 is provided protruding from the inner surface of the lamp body 2, and the tip of this supporting fixed leg is pressed into engagement with the spherical seat 4 to serve as a fulcrum O. Self-locking nuts 6 are fixed to the two moving points l and m, and the optical axis adjustment lever 3 is screwed into the nuts 6.

The self-locking nut 6 is fixed to the peripheral edge 1' of the reflecting mirror 1, and the optical axis adjustment lever 3 is screwed into the self-locking nut 6. A spring 7 is interposed between the self-locking nut 6 and the inner surface of the lamp body 2.

The optical axis adjustment lever 3 is rotatably passed through the rear surface of the lamp body 2, supported so as not to fall out of the lamp body 2, and is screwed and connected to the self-locking nut 6 on the reflector 1 side. A waterproof gasket 9 is provided in the through hole 8 of the lamp body 2 through which the rod can pass.

The waterproof gasket 9 has an O-ring shape and has a through hole 8.
It is inserted into the groove 18 at the top and pressed from above with a presser cover 17 protruding from the optical axis adjustment lever 3.

A flexible waterproof membrane 11 is provided in a watertight manner over the bulb outlet 10 of the lamp body 2, and the base 13 of the bulb 12 is made to protrude from the waterproof membrane 11.

In this invention, a self-locking nut is fixed to the periphery of the reflector, an optical axis adjustment lever that passes through the lamp body is screwed into the nut, and a spring is installed between the self-locking nut and the lamp body. Because it is interposed, the reflector is firmly attached to the lamp body, and there is no fear that the reflector will wobble during use or come off even if the connector is pressed when replacing the bulb.

Therefore, the optical axis can be adjusted reliably and smoothly, and there is no fear that the optical axis will go out of alignment after adjustment.

In addition, a waterproof gasket is provided in the through hole of the lamp body through which the optical axis adjustment knob can pass, so the waterproof gasket is pressed into contact with the presser cover protruding from the optical axis adjustment knob and the spring action, and the through hole is pressed into contact with the through hole. It is completely sealed, ensuring waterproofness in this area, and does not cause cloudiness or moisture inside.

Therefore, the intended purpose can be achieved.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of an automobile headlamp according to the present invention, FIG. 2 is a cross-sectional plan view, and FIG. 3 is a cross-sectional view of essential parts showing an embodiment of the present invention. FIG. 4 is a cross-sectional plan view of a conventional product. In the figure, 1 is a reflector, 2 is a lamp body, 3 is an optical axis adjustment lever, 4 is a spherical seat, 5 is a supporting fixed leg, 6 is a self-locking nut, 7 is a spring, 8 is a through hole, and 9 is waterproof. 10 is a valve outlet, 11 is a waterproof membrane, 16 is a groove, 1
7 is the presser foot lid.

Claims (1)

[Scope of utility model registration request] In an automobile headlamp in which the optical axis can be adjusted by supporting the reflector at three points on the lamp body, the - point is fixedly attached to the lamp body as a fulcrum, and self-locking nuts are attached to the periphery of the remaining two reflectors. is fixed, and an optical axis adjustment knob that can pass through the lamp body is screwed onto the nut, and a spunong is interposed between the self-locking nut and the lamp body, and the optical axis adjustment knob that can penetrate the lamp body is screwed into the nut. An automobile headlamp characterized by having a waterproof gasket provided in the through hole.