JPS5821441Y2 - Aiming device for vehicle headlights - Google Patents

Description

[Detailed explanation of the idea] This invention relates to an aiming device for a vehicle headlamp.

Generally, the optical axis of an automobile headlamp can be adjusted in an appropriate direction using an aiming device, and the adjustment is performed by turning a screw to the left or right.

The adjustment screws are operated with a tool such as a screwdriver, but if the head of the screw is located behind the headlight, there may be insufficient space behind the headlight. The tool cannot be inserted and the optical axis cannot be adjusted.

In preparation for such a case, conventionally, as shown in Fig. 1, a worm gear b is fixed to the head of an adjustment screw a, and a worm e is attached to the tip of a rod d rotatably held on the back side of the lamp housing C. Some have a structure in which they are fixed and meshed with the worm gear b.

When the head of the rod d is operated with the driver f to rotate the rod d, the adjustment screw a rotates due to the engagement between the worm e and the worm gear b, which fixes the lamp bulb g. The optical axis can be adjusted by pulling or pushing out the lower part of the flapper h via a nut i fixed to the lower part.

The present invention is an improvement on the conventional example described above, and aims to provide an aiming device that has a simplified structure, reduces costs, and is easy to operate.

Hereinafter, the present invention will be explained with reference to the illustrated embodiment. Reference numeral 1 denotes an aiming adjustment screw, which is screwed into a nut 4 fixed to the lower part of the reflector 2 via a bracket 3, and whose head side is attached to the lamp housing. It protrudes outward from 5.

Reference numeral 6 denotes a rotating member fixed to the head of the screw 1, which is shaped like a crowned gear, has teeth 6a on its periphery, and has a convex portion 6b formed in the center.

7 is a guide holder, and mounting pieces 7b are provided on both sides of the cylindrical portion 7a.
The mounting piece 7b is attached to the rear mounting portion of the lamp housing 5 by fixing it with screws 8.

At this time, the axis of the cylindrical portion 7a of the guide holder 7 and the axis of the rotating member 6 are perpendicular to each other, and the guide holder 7 is set at a predetermined position close to the rotating member 6.

The aiming device according to this invention is constructed as described above, and to operate it, the Phillips screwdriver 9 can be inserted into the cylindrical portion 7a of the guide holder 7 from above and turned.

That is, insert the Phillips screwdriver 9 into the cylindrical portion 7a of the guide holder 7.
When inserted into the rotary member 6, the tip thereof contacts the convex portion 6b of the rotary member 6, and the pin 9a of the Phillips screwdriver 9 is inserted into the rotary member 6.
In this state, by turning the Phillips screwdriver 9, the rotating member 6 can be rotated, and thereby the aiming adjustment screw 1 can be turned.

For example, when the Phillips screwdriver 9 is rotated to the right, the screw 1 is rotated to the right and the nut 4 is moved back (
The nut 4 is set to move forward (toward the front of the lamp) by rotating the Phillips screwdriver 9 in the opposite direction, thereby adjusting the vertical inclination angle of the reflector 2. The optical axis of the lamp bulb 10 can be adjusted by changing.

FIG. 4 shows another embodiment of this invention, in which the rotary member 6' is not provided with a convex portion for receiving the tip of a Phillips screwdriver 9', but is instead provided with a guide. A stopper piece 7'C is formed in a substantially semicircular arc shape at the tip of the holder 7', and the Phillips screwdriver 9' is received by this stopper piece 7'C so that the bit 9'a is inserted into the teeth of the rotating member 6'. 6'a.

In this embodiment as well, the optical axis can be adjusted by rotating the Phillips screwdriver 9' to the right or left, as in the previous embodiment.

In the figure, 1' is a screw for adjusting aiming, and 2' is a screw for adjusting aiming.
3' is a bracket, 4' is a nut, and 5' is a lamp housing.

As explained above, this invention is configured so that the optical axis can be adjusted by directly engaging the tip (bit) of the Phillips screwdriver with the teeth of the rotating member, so the conventional worm and worm gear are unnecessary. This simplifies the structure and reduces costs. In addition, the operation is simple and reliable as all you have to do is insert the driver into the guide holder and turn it. It has the advantage that you can work without having to match it, and you can work without looking at it every time.

Furthermore, since the driver itself is held in the guide holder, the driver does not come off during work, making work easy and extremely efficient.

[Brief explanation of the drawing]

Figure 1 shows a conventional example, A is a schematic sectional view, Figure 2 is a schematic sectional view showing the main part of the device, Figure 2 is a schematic sectional view showing an embodiment of the present invention, and Figure 3 is an explanation of the main part of the mechanism. 4 are sectional views of essential parts showing other embodiments of this invention. 1... Aiming adjustment screw, 2...
Reflector, 4... Nut, 5... Lamp housing, 6... Rotating member, 6a...
...Tooth portion, 7...Guide holder, 9...
・Phillips screwdriver

Claims (1)

[Scope of utility model registration request] An adjusting screw in the aiming device is made to protrude from the lamp housing, and a crown gear-shaped rotating member is fixed to the head of the adjusting screw, and a Phillips screwdriver that engages with the teeth of this rotating member to rotate the rotating member is used An aiming device for a vehicle headlamp, characterized in that a guide holder held in a direction perpendicular to an axis is fixed to the rear side of the lamp housing in close proximity to a rotating member.