JPH035043Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> The present invention relates to a support structure for an adjuster screw for adjusting the optical axis of an automobile headlamp. This invention relates to a support structure for an adjusting screw in which the head of the adjusting screw is connected to a mounting hole formed in a lamp via a holder.

<Prior Art> In this type of support structure, the head of the adjuster screw must be firmly held by a holder, and the holder must be fitted into the mounting hole of the lamp without wobbling.

However, in the conventional support structure shown in FIG. 9, the holder 2 is formed into a prismatic shape and fitted into the mounting hole 5 of the lamp 4, and the skirt portion 7 absorbs variations in the A dimension and holds the holder 2. Since the fixture 2 was fitted into the mounting hole 5 of the lamp 4 without any looseness, the holder 2 became larger and the fixture 4 inevitably became larger.
In addition to requiring a large installation space,
Since the mounting direction of the holder matches the direction of punching out the mold that forms the mounting hole of the light fixture and the axial direction of the adjusting screw, the holder is rectangular and can be easily held against the mounting hole of the light fixture. There is no degree of freedom in the mounting direction of the fixture, making it difficult to assemble the holder into the mounting hole of the light fixture.The degree of freedom of the adjustment screw is also small, and the adjustment screw is difficult to assemble in the direction in which the mold that forms the mounting hole of the light fixture is drawn out. Since the unit could hardly be tilted, there were problems such as problems with the optical axis adjustment operation itself.

Therefore, as shown in FIGS. 7 and 8, one side of the holder 2 is made to have an outer circumferential portion 2' widened into a roughly tangled shape, the other side 2'' is formed into a generally cylindrical shape, and the mounting hole 5 of the lamp 4 is expanded. is composed of a sliding contact part 5a that fits with the outer circumferential part 2' on one side of the holder and a free space 5b that lets the other side part 2'' play, and the holder 2 is connected to the sliding contact part 5a of the mounting hole 5.
A support structure was devised in which an elastic locking claw 8 formed protruding from the middle of the holder is locked to the end of the sliding contact portion 5a of the mounting hole. According to this support structure, the degree of freedom in the mounting direction of the holder with respect to the mounting hole of the light fixture is improved to an angle (θ) with respect to the direction (m) of cutting out the mold that forms the mounting hole of the light fixture,
Coupled with the fact that the outer shape of the holder 2 is cylindrical,
It becomes easier to fit the holder into the mounting hole of the lamp, and the degree of freedom of the adjuster screw also increases to some extent.
In order to make the axial direction of the adjuster screw tilt at an angle θ=4° or more with respect to the mold removal direction (m), the mounting hole 5 should be in contact with the outer circumferential portion 2' of one side of the holder 2. Since the sliding contact portion 5a is formed in an arc shape,
There was a problem in which the mounting hole could not be formed unless an expensive slide mold was used for the part of the mold that formed the mounting hole of the light fixture.

<Problems to be solved by the invention> The present invention has been made in view of the problems of the conventional structure, and it is possible to assemble the holder by increasing the degree of freedom in the mounting direction of the holder with respect to the mounting hole of the light fixture. In addition, even when the axial direction of the adjusting screw is tilted at an angle of θ = 4° or more with respect to the mold removal direction (m), the mounting hole of the light fixture can be formed easily. The purpose of the present invention is to provide a support structure for an adjusting screw in an automobile headlamp, which has a structure that eliminates the need to use an expensive slide mold for a mold for a portion where the adjusting screw is attached.

<Means for Solving the Problems> The adjusting screw support structure of the present invention that achieves the above purpose is such that the head of the adjusting screw, which is formed into a substantially spherical shape, is inserted into the mounting hole of the lamp via a holder. In the support structure of the adjusting screw, the holder is formed into a substantially truncated conical shape having a flat tapered surface on the outer circumferential surface, and elastic locking claws are formed protrudingly on the outer circumferential surface, The mounting hole of the light fixture is composed of a sliding contact portion formed in a substantially mortar shape that fits with the outer circumferential surface of the holder, and a free portion that allows the tip of the holder to play, and the sliding contact portion and An engaging stepped portion for locking the elastic locking claw of the holder is formed between the free part and the holder, and the holder is fitted into the mounting hole of the lamp. be.

<Example> Hereinafter, an example of implementing the present invention will be described based on the drawings.

The adjuster screw 1 has a head 1a formed into a substantially spherical shape, as in the conventional one, and a holder 2 is rotatably attached to the head 1a, and a lamp 4 is attached via the holder 2. Connect to hole 5, threaded part 1b
is screwed and connected to a self-locking nut 11 fixed to the vehicle body side 10, and the adjusting screw 1 is rotated by an appropriate means, and in the illustrated example, it is inserted into the operating groove 13 recessed in the upper surface of the head 1a. driver 1
2 is engaged and rotated to adjust the optical axis of the lamp unit B.

The holder 2 is made of a resin material and is formed into a substantially truncated conical shape with a flat tapered outer peripheral surface, into which the head 1a of the adjusting screw 1 is rotatably fitted. It forms the spherical catch 14 that is held together, and also the head 1a of the adjusting screw 1.
A vertically divided hole 3 is cut out along the axial direction to facilitate press-fitting, and an elastic locking pawl 8 that engages with the mounting hole 5 of the lamp 4 is formed protruding from the middle of the outer peripheral surface.

The lamp 4 that supports the holder 2 refers to a member for connecting the adjusting screw 1, and may be a retaining ring or a lamp body of a lamp unit B as shown in the figure. A mounting hole 5 is formed at a location, for example, a flange portion 4a of the lamp body, and the holder 2 is fitted and supported within the mounting hole 5.

The mounting hole 5 has a sliding contact portion 5a formed in a substantially mortar shape so as to fit with the outer circumferential surface of the holder 2 formed in the shape of a substantially truncated cone, and a loose end 2'' of the holder 2. The sliding contact portion 5
One side outer circumferential portion 2' of the holder 2 is abutted and fitted on the holder 2 so that the distal end 2'' of the holder protrudes into the free space 5b, and the elastic locking claw 8 of the holder 2 is brought into sliding contact. Part 5a
The engagement step 5c is formed between the free space 5b and the free space 5b.

Next, we will explain the assembly order of the support structure of the present invention.
First, the adjusting screw 1 is threadedly connected to a self-locking nut 11 fixed to the vehicle body side 10, and the holder 2 is press-fitted into the head 1a of the adjusting screw 1 and attached. Next, light fixture 4
Hold the lever and press the mounting hole 5 onto the holder 2.
Then, the outer circumferential portion 2' of one side of the holder 2 comes into contact with the sliding contact portion 5a of the mounting hole 5, and the distal end 2'' of the holder
protrudes into the free space 5b of the mounting hole, and the elastic locking pawl 8 of the holder 2 rides over the sliding contact portion 5a of the mounting hole 5 and engages with the engagement stepped portion 5c, thereby completing the assembly. complete.

<Effects of the invention> Since the supporting structure of the adjuster screw in the automobile headlamp of the present invention is constructed in this way, it is not only the conventional structure shown in Fig. 9 but also the structure shown in Figs. 7 and 8. Compared to the structure shown, the degree of freedom in the mounting direction of the holder relative to the mounting hole of the lamp can be significantly increased. In other words, the degree of freedom in the mounting direction of the holder with respect to the mounting hole of the lamp can be improved to an angle (θ) with respect to the direction (m) of cutting out the mold that forms the mounting hole of the lamp, and the external shape of the holder can be improved. Coupled with the substantially truncated conical shape, the holder can be easily fitted into the mounting hole of the lamp, and therefore the ease of assembling the holder can be greatly improved.

In addition, since it is possible to move the axial direction of the adjusting screw up to an angle (θ) with respect to the cutting direction (m) of the mold that forms the mounting hole of the light fixture, the axial direction of the adjusting screw Even if the mold removal direction (m) is slightly misaligned, the mounting hole side of the light fixture and the self-locking nut side can be easily connected via the holder using the adjusting screw, and the optical axis can be adjusted. There is no possibility of hindrance to operation.

Moreover, even when the adjusting screw can be tilted by an angle θ=4° or more with respect to the mold removal direction (m), the mounting hole of the light fixture that fits and supports the holder must be placed around the outer periphery of the holder. Since it is only necessary to form a simple mortar shape according to the shape, there is no need to use an expensive slide mold for the mold for forming the mounting hole of the lamp, and therefore it can be provided at low cost.

Therefore, the intended purpose can be achieved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an example of the implementation of the present invention;
The figure is an exploded view of the main parts, Figure 3 is a partially cutaway side view of the holder according to the present invention, Figure 4 is a sectional view taken along line 4-4 in Figure 3, Figure 5 is a front view of the same, and Figure 6 is The figure is a perspective view of the same, FIG. 7 is a sectional view showing the conventional example, and FIG. 8 is an exploded view of the same.
FIG. 9 is a sectional view showing another conventional example. In the figure, 1 is an adjustment screw, 1a is its head, 2 is a holder, 4 is a lamp, and 5 is a mounting hole.

Claims (1)

[Scope of utility model registration request] A support structure for an adjusting screw in which the head of the adjusting screw formed in a substantially spherical shape is connected to a mounting hole of a lamp via a holder,
The holder is formed into a substantially truncated conical shape having a tapered surface with a flat outer peripheral surface, and an elastic locking claw is formed protruding from the outer peripheral surface, and the mounting hole of the lamp is matched with the outer peripheral surface of the holder. The structure includes a sliding contact portion formed in a substantially mortar shape, and a free portion that allows the distal end of the holder to play, and an elastic locking claw of the holder is provided between the sliding contact portion and the free portion. 1. A support structure for an adjusting screw in a headlamp for an automobile, characterized in that an engagement step is formed to lock the holder, and the holder is fitted into a mounting hole of the lamp.