JP2769278B2 - Push-on fix for aiming screw locking - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

2. Description of the Related Art A headlamp for an automobile is provided with an aiming mechanism for adjusting a tilting direction of light irradiation (hereinafter, referred to as aiming). This is performed by rotating the screw. The present invention relates to a push-on fix for locking an aiming screw, which is used to prevent an aiming screw inserted through a lamp body from coming off from the lamp body.

[0002]

2. Description of the Related Art FIGS. 5 and 6 show an outline of an aiming mechanism of a headlamp for an automobile. FIG. 5 is a view of the headlamp viewed from the front, and FIG. 6 is a longitudinal sectional view of the same. FIG. 6 is a sectional view taken along line VI-VI shown in FIG. In these figures, a reflector 3 in which a bulb 4 as a light source is inserted is tiltably supported by an aiming mechanism in a lamp room space formed by a lamp body 1 and a front lens 2. The aiming mechanism includes a swinging fulcrum 6a, a vertical aiming screw 6b penetrating the lamp body 1 and extending back and forth, and a reflector-side nut (not shown) screwed to the screw 6b.
Similarly, a left-right aiming screw 6c extending through the lamp body 1 and extending forward and backward, and a reflector-side nut (not shown) screwed to the screw 6c are constituted by three points. 6
By rotating c, the reflector 3 is tilted around the horizontal axis Lx and the vertical axis Ly, which are tilt axes, thereby enabling aiming.

FIG. 7 is an enlarged sectional view showing a lamp body insertion portion of the aiming screw. The aiming screw 6b (6c) is a screw insertion hole 1 of the lamp body 1.
a and extends forward and backward, is prevented from falling off from the lamp body 1 by the push-on fixture 7, and is rotatably supported in the screw insertion hole 1a. In the push-on fix 7, as shown in an enlarged manner in FIG. 8, a plurality of cuts 7b are formed in a central circular hole of a thin disk-shaped body 7a, and a plurality of leaf spring pieces 7c are formed in a peripheral region of the circular hole. In this structure, the leaf spring piece 7c sandwiches the locking portion 6d of the aiming screw 6b (6c), and thereby the aiming screw 6b (6c) is prevented from coming off with respect to the lamp body 1. Symbol 8 is
A wave washer for eliminating backlash in the axial direction at the aiming screw support, reference numeral 9a denotes an O-ring for ensuring waterproofness at the aiming screw support, and reference numeral 9b denotes a slide washer.

[0004]

However, in the structure of the aiming screw support portion described above, the push-on fix 7 for retaining the aiming screw 6b (6c) and the wave washer 8 for absorbing backlash in the axial direction are provided. Is indispensable, so the number of parts is large,
There was a problem that it took time to assemble.

When the push-on fix is mounted, the screw 6 is inserted into the circular hole while deforming the leaf spring piece 7c.
Since the b (6c) can be inserted, the push-on fix can be easily mounted, but it is difficult to remove the push-on fix when it is mounted only once, which is inconvenient for repairing the aiming screw support portion. Also, recently, there is a tendency to disassemble the lamps removed from the scrapped car and to use them for recycling by material, but it is difficult to remove the push-on fix 7 from the lamp body 1. It is the current situation.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the prior art, and has an object of being easy to remove and absorbing not only the original function of preventing the lamp body from being pulled out but also the play in the axial direction. It is another object of the present invention to provide a push-on fix for locking an aiming screw, which has another function of performing the above operation.

[0007]

In order to achieve the above object, in the push-on fix for locking an aiming screw according to the present invention, a peripheral area of a circular hole of a thin disk having a circular hole formed in a central portion is provided. A plurality of notches extending radially are formed in the peripheral portion of the circular hole, and a plurality of leaf spring pieces that sandwich the inserted aiming screw are formed while allowing the aiming screw to be inserted into the circular hole. In an aiming screw locking push-on fix for retaining the aiming screw inserted into the lamp body of the vehicle headlamp against the lamp body, a plurality of substantially equal parts in the circumferential direction of the outer peripheral edge of the thin disk-shaped body are provided. The push-on disk mounting surface on the lamp body side is pressed by the cut-and-raised portion. A plurality of leaf spring pieces to be formed are formed, and a plurality of locations in the circumferential direction corresponding to the leaf spring pieces for holding the aiming screw are raised upward, and the rising portions aim at the leaf spring pieces for holding the aiming screw. A pinching release claw for releasing the pinching of the screw is formed.

[0008]

When the aiming screw is inserted into the circular hole of the push-on fix, the leaf spring piece for holding the aiming screw formed in the peripheral region of the circular hole is elastically deformed and smoothly inserted into the circular hole of the aiming screw. That is, the push-on fix can be smoothly fitted to the aiming screw. Further, the aiming screw holding leaf spring piece formed in the peripheral area of the circular hole clamps the aiming screw fitted in the circular hole to prevent the aiming screw from coming off the lamp body. Further, a plurality of leaf spring pieces formed on the outer peripheral edge of the thin disk-shaped body are pressed against the push-on-fix-attached surface, and absorb axial play at the lamp body insertion portion of the aiming screw.

Further, when the holding release claw formed on the outer peripheral edge of the thin disk is elastically deformed outward in the radial direction of the disk,
The region applied from the claw to the holding leaf spring piece is elastically or plastically deformed in a direction in which it is warped to the rear side, so that the circular hole is expanded.

[0010]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 4 show one embodiment of the push-on fix according to the present invention, FIG. 1 is a perspective view of the push-on fix, FIG. 2 is a cross-sectional view of an aiming screw supporter equipped with the push-on fix, FIG. 3 is an enlarged cross-sectional view of a leaf spring piece formed by cutting and raising the outer peripheral edge of the disk body of the push-on fix, and FIG. 4 is a diagram illustrating a state where the aiming screw of the hole-side leaf spring piece of the push-on fix is released from being pinched. FIG.

In these figures, the push-on fix 10 is a thin disk 1 having a central circular hole 14 formed therein.
2, a plurality of elastically deformable leaf spring pieces 16 formed in a circular hole peripheral area of the disk body 12 and extending obliquely upward;
A leaf spring piece 18 bent downward in the outer peripheral area of the disk 12 and an upper extension 19 serving as an aiming screw unlocking claw also extended upward in the outer peripheral area of the disk 12. It is composed of Leaf spring piece 1 on the circular hole side
No. 6 is formed by making a notch 13 extending radially in the hole peripheral region and raising the hole peripheral region obliquely upward by drawing. On the other hand, the leaf spring piece 18 on the outer peripheral edge side of the disc body forms an L-shaped cut 17 in the outer peripheral area area of the disc body 12 to form a strip-shaped strip area extending in the circumferential direction, and draws this downward. It is formed by. The upper extension 19 of the outer peripheral edge is
The outer peripheral edge extension regions having a width corresponding to the leaf spring pieces 16 on the circular hole side are formed by drawing upwards.

When the below-described aiming screw 20 is inserted into the circular hole 14, the leaf spring piece 16 on the circular hole side is pushed by the screw 20 to be pushed in and elastically deforms, thereby enabling the screw 20 to be smoothly inserted. . That is, there is an operation that enables the push-on fix 10 to be smoothly fitted to the screw 20. Further, after the screw 20 is inserted, the leaf spring piece 16 also has a function of holding the screw 20 so as to prevent the screw 20 from coming off. The tip of the leaf spring piece 16 is sharp, and bites into the screw to enable reliable clamping.

On the other hand, the leaf spring piece 18 on the outer peripheral edge of the disk body is pressed against a push-on-fix attachment surface 1b described later,
It has an effect of absorbing the backlash in the axial direction of the aiming screw 20. Further, as shown in an enlarged manner in FIG. 3, the leaf spring piece 18 is formed in an arc shape, has a small contact area with the push-on-fix mounting surface 1b formed on the lamp body 1, and Rotational resistance is reduced. That is, push-on fix 10
When used to lock the aiming screw 20, since the leaf spring piece 16 holds the screw,
Push-on fix 10 is aiming screw 2
0, but the sliding area in contact with the push-on-fix attachment surface 1b is small, so that the sliding friction is small and the aiming screw 20 can be smoothly rotated.

As shown by an arrow A in FIG. 4, the upwardly extending portion 19, which is the aiming screw locking release claw, is subjected to an outward force on the distal end of the extending portion 19, so that the extending portion 19 is released.
The area from to the leaf spring piece 16 warps outward as shown by the imaginary line in FIG. 4, whereby the distal ends of the leaf spring pieces 16 are displaced away from each other.
Accordingly, when the cylindrical jig 30 is pressed in the axial direction and the extending portion 19 is pushed outward in the radial direction by the tapered surface 32 of the jig 30, each leaf spring piece 16 is deformed so as to warp outward. Then, the circular hole 14 is widened, and the holding state of the aiming screw by the leaf spring piece 16 can be easily released.

An aiming screw 20 locked by the push-on fix 10 is supported by a distal-end-side male screw portion 21 screwed to a nut (not shown) on the reflector side and a screw insertion hole 1a formed in the lamp body 1. Of the lamp body 1 and a rotating operation part 23 protruding to the rear side of the lamp body 1. A flange 24 for setting the amount of insertion of the screw 20 into the lamp body is formed between the straight part 22 and the rotation operation part 23. In the state shown in FIG. 2 in which the aiming screw 20 is inserted into the screw insertion hole 1a, a sliding washer 9b made of a graphite film containing graphite is interposed between the lamp body 1 and the flange 24, and the lamp body of the screw insertion hole 1a is inserted. An O-ring 9a for waterproofing is mounted on the periphery of the rear opening.

A constricted portion 25 is formed at the tip end of the straight portion 22 of the screw. The constricted portion 25 and a push-on fix formed on the peripheral edge of the opening of the screw insertion hole 1a on the inner surface side of the lamp body. A push-on fix 10 is interposed between the mounting surface 1b. The push-on fix 10 has an aiming screw 20 inserted through the lamp body insertion hole 1a.
As shown by the phantom line in FIG. 2, the leaf spring piece 16 can be elastically deformed to get over the bulging straight portion 22a and be fitted to the constricted portion 25. The leaf spring piece 16 sandwiches the constricted portion 25, and the tip end of the leaf spring piece 16 contacts the step 26 to prevent the screw 20 from coming off in the axial direction. 1b is pressed into contact to absorb backlash in the axial direction.

In order to remove the push-on fix 10, the tip of the extension 19 of the push-on fix 10 is pressed by using the jig 30 shown in FIG. The engagement between the leaf spring piece 16 and the step 26 can be easily released by expanding the tip of the piece 16 outward. In the above-described embodiment, an outward force (see arrow A in FIG. 4) is applied to the upper extending portion 19 in order to expand the circular hole 14 (release the holding of the aiming screw of the leaf spring piece 16). Has become
Since the upwardly extending portion 19 extends obliquely, even if a vertically downward force (see the arrow B in FIG. 4) is applied, the circular hole 14 is formed.
Can be expanded.

Further, in the above embodiment, the leaf spring 16 is elastically deformed together with the upper extending portion 19 which is a pinching release claw, so that the leaf spring 16 is expanded.
6 may be expanded by plastic deformation.

[0019]

As is apparent from the above description, in the push-on fix for aiming screw locking according to the present invention, in addition to the original function of the push-on fix for preventing the aiming screw from coming off, the push-on fix in the axial direction is also provided. Since it has the function of absorbing backlash, the number of components of the lamp body insertion part of the aiming screw can be reduced, the structure of the aiming screw support part of the lamp body becomes simpler, and the aiming screw lamp body It is easy to assemble it.

[0020] The locking of the aiming screw of the push-on-fix can be easily released by elastically or plastically deforming the aiming screw holding release claw provided on the outer peripheral edge of the main body. It is convenient for disassembling and repairing the aiming screw bearing because it is easy to carry out, and is meaningful for material recycling.

[Brief description of the drawings]

FIG. 1 is an enlarged perspective view of a push-on fix according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of an aiming screw support using the push-on fix.

FIG. 3 is an enlarged view of a leaf spring piece formed by cutting and raising an outer peripheral edge of a disk body of a push-on fix.

FIG. 4 is an explanatory view for explaining a state in which the pinching of the aiming screw of the circular hole side leaf spring piece of the push-on fix is released.

FIG. 5 is a front view of an automobile headlamp.

FIG. 6 is a vertical sectional view of the headlamp (a line VI- shown in FIG. 5).
Sectional view along VI)

FIG. 7 is an enlarged sectional view of an aiming screw locking portion.

FIG. 8 is an enlarged perspective view of a conventional push-on fix.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Lamp body 1a Aiming screw insertion hole 1b Push-on fix attachment surface 10 Push-on fix 12 Thin disc body 13 Cut 14 Center circular hole 16 Leaf spring piece on outer hole side 18 Upper extension part which is a nail 20 Aiming screw

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F21M 3/20 B60Q 1/06 F16B 21/18

Claims (1)

(57) [Claims] A plurality of notches extending radially are formed in a peripheral area of a circular plate having a circular hole formed in a central portion thereof, and the aiming screw is fitted into the circular hole in the peripheral area of the circular hole. A structure in which a plurality of leaf spring pieces are formed to sandwich the inserted aiming screw, and the aiming screw retains and holds the aiming screw inserted through the lamp body of the headlamp for the vehicle with respect to the lamp body. In the stop push-on fix, a plurality of portions of the outer peripheral edge of the thin disk-shaped body which are substantially equally divided in the circumferential direction are cut and raised, and the cut-and-raised portion press-contacts the push-on-Fisk attachment surface on the lamp body side. A plurality of leaf spring pieces are formed, and a plurality of locations in the circumferential direction corresponding to the leaf spring pieces for holding the aiming screw are substantially equally divided. A push-on fix for locking an aiming screw, wherein the push-up fix is raised upward, and a clamping release claw is formed by the rising portion to release the clamping of the aiming screw from the leaf spring piece for retaining the aiming screw.