JPS6242406Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention provides a retaining mechanism for an automobile headlamp that has a simplified structure and that reliably prevents the spherical head from coming off from the receiving seat of the cylindrical bearing. Regarding.

[Prior art]

As is well known, automobile headlights are held at three points so that the optical axis can be adjusted during assembly and adjustment, replacement, and the like. One of these three holding mechanisms consists of a support shaft with a spherical head and a bearing, which constitutes a pivot point for the headlight, and the other two consist of an aiming screw with a spherical head and a bearing. The angle adjustment mechanism is configured to rotate the headlight around the spherical head of the support shaft by adjusting the rotation of the aiming screw to adjust the optical axis. To explain this about the conventional headlight shown in Fig. 1a and b, 2 is a front lens, 3 is a reflector, 4 is a bulb, 5 is a socket cover,
These constitute a headlamp 1. The front lens 2 is arranged in front of the reflector 3 and separated from it, and its peripheral portion is fitted into the annular groove 7 of the lamp body 6.
It is fixed with adhesive.

Among the three holding mechanisms 8, 15, and 16 that rotatably connect the reflector 3 to the lamp body 6 side, the holding mechanism 8 that constitutes a rotational fulcrum part has an optical axis, that is, a horizontal axis passing through the center O of the bulb 4. It is provided at a predetermined distance diagonally to the right from Spherical head 11 on cylindrical bearing 10
It is composed of a support shaft 11 which is held by a.
On the other hand, the remaining two holding mechanisms 15 and 16 constituting the angle adjustment mechanism of the reflector 3 have the same structure and are respectively disposed diagonally above the left side and diagonally below the right side of the reflector 3. Aiming screw 18 that penetrates and is screwed into the mounting part
and a cylindrical bearing 1 that holds a spherical head 18a provided at the tip of the aiming screw 18.
9, a holding member 20 that is disposed on the back surface of the peripheral edge of the reflector 3 and holds the cylindrical bearing 19;
It is composed of a compression coil spring 21 and the like interposed between the lamp body 6 and the holding member 20. Therefore,
When the aiming screw 18 of the diagonally upper left holding mechanism 15 is rotated, the left end side of the reflector 3 is rotated back and forth about the upper right holding mechanism 8, and when the holding mechanism 16 located diagonally below the right is operated, The lower end side of the reflector 3 is rotated in the front-rear direction about the holding mechanism 8 .

By the way, in the case of the holding mechanisms 15 and 16 (the same applies to the other holding mechanisms 8) constituting the conventional angle adjustment mechanism, the spherical head 18a is held by the receiving seat part of the cylindrical bearing 19, and the spherical head 18a is held in place. However, since a groove is formed on the outer periphery of the receiving seat to facilitate press-fitting of the spherical head 11a, the aiming screw 18 may loosen due to vibration or the like, or the reflector 3 may be damaged in the forward direction of the vehicle body. When an external force is applied, the receiving seat portion opens and the spherical head 18a
It had the disadvantage that it came off.

[Summary of the idea]

The present invention has been made in view of the above-mentioned points, and includes a washer fitted around the outer periphery of the receiving seat of the cylindrical bearing to prevent the receiving seat from opening. The front panel for automobiles has an extremely simple structure in which the washer is prevented from coming off from the outer periphery of the receiving seat part using an elastic engagement piece, thereby reinforcing the receiving seat part and reliably preventing the spherical head from coming off. This provides a holding mechanism for the light.

〔Example〕

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

Fig. 2 is a sectional view showing an embodiment of the automobile headlamp holding mechanism according to the present invention applied to an angle adjustment mechanism, Fig. 3 is an exploded perspective view of the same mechanism, and Fig. 4 is the same mechanism. FIG. Note that the same members as in FIG. 1 are designated by the same reference numerals, and their explanations will be omitted. In these figures,
Angle adjustment mechanism that rotatably connects the reflector 3 to the lamp body 6 (corresponds to the holding mechanisms 15 and 16 in Fig. 1)
30 is a support shaft 1 having a spherical head 18a at the tip.
8, a cylindrical bearing 40, a washer 50, etc.

The support shaft 18 has a thread 31 formed on its outer peripheral surface to constitute the aiming screw described in FIG. .

The cylindrical bearing 40 is integrally formed of a synthetic resin material, and has a cylindrical body 41 with both ends open.
The cylinder body 4 is provided at the center of the outer circumference of the cylinder body 41.
A contact plate 42 having a plane perpendicular to the axial direction of
The cylindrical body 41 has one end opening side forming a receiving seat 43 having a spherical space 43a. The spherical space 43a is formed to be substantially the same as or slightly larger than the spherical head 18a, and its opening is set smaller than the diameter of the spherical head 18a. Note that 43b is a tapered portion that guides the spherical head 18a.

Two grooves a and b are formed on the outer periphery of the receiving seat of the cylindrical body 41 so as to be equally spaced in the circumferential direction, thereby allowing the receiving seat 43 to be elastically deformed in the diametrical direction. A pair of elastic engagement pieces 44 and 45 that are elastically deformable in the diametrical direction of the cylinder 41 are formed on the outer periphery of the end of the cylinder 41 opposite to the receiving seat 43 side. These elastic engagement pieces 44 and 45 extend in the axial direction of the cylindrical body 41 and have one end attached to the cylindrical body 41.
By forming a substantially hook-shaped groove 46 in the cylindrical body 41 axially symmetrically, the groove 46 is composed of a groove opening at the end face of the cylindrical body 41 and a groove extending in the circumferential direction of the cylindrical body 41 from the other end of the groove. It is formed into a shape, and inverted triangular engaging portions 44a and 45a are integrally provided on the surface thereof, respectively. Note that the elastic engagement pieces 44 and 45 are not limited to the substantially hook-shaped grooves 46, but may be formed into tongue-shaped pairs of left and right grooves that are long in the axial direction of the cylindrical body 41.

A pair of left and right elastic engagement pieces 47 and 48 facing each other with the abutment plate 43 interposed therebetween are integrally provided on the surface of the abutment plate 42 on the receiving seat 43 side, and a triangular engagement piece is provided on the inner surface of the distal end thereof. Joint portions 47a and 48a are each formed integrally. In addition, each of the above-mentioned engaging portions 4
The inclined upper surfaces of 7a and 47b are the washers 50.
guide surfaces 47b and 48b. Also,
A stepped portion 49 is provided on the surface of the abutting plate 42 on the receiving seat 43 side.
are integrally protruded. This stepped portion 49 is provided inside the pair of elastic engagement pieces 47 and 48 and is spaced apart from them, and the upper surface and each elastic engagement piece 47 and 4
A distance approximately equal to the thickness of the washer 50 is set between the engaging portions 47a and 48a of the washer 50.

The washer 50 is formed by drawing a metal plate, etc., and is composed of a cylindrical portion 51 that fits around the outer periphery of the receiving seat 43, and a flange 52 provided at an opening at one end of the cylindrical portion 51. The other end opening of the cylindrical portion 51 is formed smaller than the one end opening, and forms an insertion hole 53 through which the support shaft 18 can pass.

A rearwardly extending protrusion 60 is integrally provided at a location corresponding to the support shaft 18 on the back surface of the reflector 3, and a fitting hole 61 as a bearing mounting portion is formed in the rear end surface. .

Next, the installation of the holding mechanism 30 and the connection between the support shaft 18 and the cylindrical bearing 40 will be explained.First, the support shaft 18 is screwed into the nut 32, and the cylindrical bearing 40 is attached to the protrusion 60. When installing the cylindrical bearing 40, the end of the cylindrical body 41 on the side opposite to the receiving seat 43 is fitted into the fitting hole 61 of the protrusion 60 from behind, and the contact plate 42 is attached to the protrusion. What is necessary is to make it come into contact with the rear end surface of 60. At this time, the pair of permeable engagement pieces 45 and 46 come out of the fitting hole 61 and elastically return to engage with the periphery of the fitting hole 61, so that the fitting hole 61 of the cylindrical bearing 40 This prevents it from coming off.

Next, the spherical head 18a of the support shaft 18 is pressed into the receiving seat 43 while being rotated using a spanner or the like.
At this time, the washer 50 is fitted onto the support shaft 18. Press-fitting of the spherical head 18a is easy because the receiving seat 43 is opened by the pair of grooves a and b.
After press-fitting the spherical head 18a, the washer 50 is moved toward the reflector 3 and the cylindrical portion 5 is removed.
1 is fitted onto the outer periphery of the receiving seat 43. During this fitting, the collar 52 of the washer 50 pushes and spreads the pair of elastic engagement pieces 47 and 48 and is brought into close contact with the stepped portion 49. Then, each of the elastic engagement pieces 47 and 48 is elastically returned to its original state, and the engagement portions 47a and 48a thereof are engaged with the flange 52, thereby preventing the washer 50 from coming off from the receiving seat 43. FIG. 4 shows this state. Further, after the washer 50 is fitted and fixed to the receiving seat 43, even if the support shaft 18 rotates due to vibration or external force is applied to the reflector 3, the opening of the receiving seat 43 is completely prevented. , the spherical head 18a is the receiving seat 43
You can't get out of it.

In addition, when removing the washer 50 from the receiving seat 43, the pair of elastic engagement pieces 47 and 48 may be elastically deformed to disengage from the collar 52.

The above embodiment also includes an angle adjustment mechanism (holding mechanism 1 in Fig. 1) among the holding mechanisms that hold the headlight at three points.
5, 16), but it can also be applied to a holding mechanism that forms a rotation fulcrum (holding mechanism 8 in Figure 1), in which case the support shaft is simply illuminated. Just connect and fix it to your body.

[Effect of idea]

As described above, the automobile headlamp holding mechanism according to the present invention includes a washer fitted to the outer periphery of the receiving seat of the cylindrical bearing disposed on the back of the reflector.
This washer is configured to be locked with an elastic engagement piece provided on the cylindrical bearing to prevent it from coming off, so the receiving seat can be reinforced with just one washer and prevented from opening. Therefore, it is possible to reliably prevent the spherical head of the support shaft from coming off the receiving seat, and also prevent damage to the receiving seat itself. Furthermore, it is easy to attach and remove the washer from the receiving seat, and its practical effects are very great.

[Brief explanation of the drawing]

Figures 1a and b are a front view and a cross-sectional view of a headlamp equipped with a conventional holding mechanism, Figure 2 is a cross-sectional view showing an embodiment of the holding mechanism according to the present invention, and Figure 3 is a cross-sectional view of the same mechanism. The exploded perspective view and FIG. 4 are enlarged sectional views of essential parts of the mechanism. 1... Headlight, 3... Reflector, 6... Light body, 18... Support shaft, 18a... Spherical head, 30
...Holding mechanism, 40... Cylindrical bearing, 41...
... Cylinder, 42 ... Contact plate, 43 ... Receiver, 4
4, 45, 47, 48... elastic engagement piece, 49...
Stepped portion, 50... Washer, 51... Cylindrical portion, 52...
...Brim, 61... Fitting hole, a, b... Division groove.

Claims (1)

[Scope of utility model registration request] a support shaft having a spherical head and disposed on the lamp body;
A cylindrical bearing having a receiving seat disposed in a bearing mounting portion provided on the back surface of the reflector and holding the spherical head; The cylindrical bearing includes an elastic engagement piece that engages with the washer and prevents the washer from coming off from the outer periphery of the receiving seat, and a plurality of elastic engagement pieces formed on the outer periphery of the receiving seat. A holding mechanism for an automobile headlamp, characterized by having individual grooves.