JP2548615Y2 - Lens mounting structure for vehicle lighting - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp, and more particularly, to a structure of the vehicular lamp when a lens and a housing are mounted.

[0002]

2. Description of the Related Art A lens 9 in a conventional vehicular lamp 90 is disclosed.
FIG. 4 shows an example of an attachment structure between the housing 1 and the housing 92.
In the opening of the lens 91 formed in a substantially box shape, for example, hooks 91a with the stepped direction of the claw outward are provided at a plurality of positions, and one housing 92 is provided with a hook for inserting the hook 91a. The attachment holes 92a are provided correspondingly. At this time, the engagement hole 92
The symbol a is formed so that the thickness of the lens and the step of the hook 91 a can pass through the groove width at the same time, and the outer side thereof is arranged to match the outer diameter of the lens 91.

[0003] When the lens 91 and the housing 92 having the above structure are mounted, the hook 91a is pressed against the engaging hole 92a so that the hook 91a is elastically deformed by a step difference due to elasticity. And the attachment hole 9
2a, and when this penetration is performed, the hook 91a rebounds by elasticity at the time of the penetration, and the stepped portion of the hook 91a is wrapped around the back side of the engagement hole 92a, whereby the lens 91 and the housing 92 are attached. It will be.

[0004]

However, in the above-described conventional configuration, the strength of the attachment between the lens 91 and the housing 92 is determined by the amount of the step provided on the hook 91a and the elastic force of the lens 91. Therefore, when the outer diameter of the lens 91 becomes smaller due to molding conditions or the like, or when the lens 91 cannot be given a sufficient thickness in design, the holding power of the two becomes weak, and for example, when the vehicle is running. There is a problem of separation due to external stress such as vibration and shock generated inside,
This poses a problem in terms of reliability.

[0005]

According to the present invention, as a specific means for solving the above-mentioned conventional problems, a plurality of hooks are provided on an end surface of a substantially box-shaped lens opening at a thick surface. A lens of a vehicle lamp fixed to a plurality of engaging holes provided in a housing and having a groove width through which a thickness of the lens and a step of the hook can pass through the housing. in the mounting structure, a side of the engaging Chakuana
It is provided integrally with the housing at an appropriate distance in the vicinity,
When the lens is attached to the housing,
The wall surface of the lens opening opposite to the surface where the step is provided
And this lens is moved by the step difference of the hook.
Displace the hook to the step side, and move the hook
An object of the present invention is to solve the problem by providing a mounting structure for a lens of a vehicle lamp, which has a boss that regulates deformation of the lens, without causing detachment.

[0006]

Next, the present invention will be described in detail with reference to an embodiment shown in the drawings. 1 is a vehicular lamp, and also in this vehicular lamp 1, a lens 2 is formed in a substantially box shape, and a hook 3 is formed on an end surface of the opening so that, for example, a step portion is on the outside. The housing 3 is provided with an engagement hole 5 so that the hook 3 and the engagement hole 5 are provided.
Is similar to that of the conventional example in that the housing 4 is provided with a boss 6 in addition to the engagement hole 5 according to the present invention. The boss 6 allows the lens 2 and the housing 4
Is designed to be firmly attached.

Hereinafter, the boss 6 will be described in more detail. As shown in FIG.
A suitable distance D is provided to the side of the housing 4 and projects to the side of the housing 4 where the hook 3 is inserted,
Further, as shown in FIG. 3, the lens 2 is brought into contact with the surface (the inner surface of the lens 2 in this embodiment) of the lens 2 opposite to the surface on which the hook 3 is provided, and the lens 2 is provided with a step difference. Only at a position displaced toward the hook 3 side.

Next, the operation and effect of the present invention having the above structure will be described.
When the hook 3 and the engaging hole 5 are opposed to each other for mounting, the boss 6 comes into contact with the rear surface of the lens 2, and the lens 2 cannot move inward at this portion.

In this state, if the lens 2 is pressed, the hook 3 is deformed at the portion corresponding to the distance D from the engagement hole 5 of the lens 2 to the boss 6, so that the hook 3 is hooked at once. After the attachment is performed, the overall inward deformation of the lens 2 is prevented by the boss 6 in the vicinity of the attachment hole 5, so that a larger amount of external stress is applied. Also, the hook 3 and the engaging hole 5 do not separate from each other.

[0010] Further, for example, the lens 2
Even when the outer diameter of the lens 2 is formed smaller than the specified dimension, the lens 2 is expanded from the inner diameter side by the boss 6 so as to be in a predetermined position near the engagement hole 5 due to the provision of the boss 6. In this case, the hook 3 is securely engaged with the engagement hole 5 so that no detachment occurs.

At this time, the distance D from the engagement hole 5 to the boss 6 is determined in consideration of, for example, the thickness of the lens 2 or the flexibility of the material.
When the thickness is small and easily deformed by external stress, a small value of the distance D ensures the effect of preventing separation.

In this embodiment, the description has been made in the case of a so-called outer claw in which the hook 3 protrudes to the outer diameter side of the lens 2. However, the present invention can be applied to an inner claw. In this case, the boss 6 may be provided so as to contact the outer surface of the lens 2. Further, a change such as providing a taper on the boss 6 to reduce the pressure when the hook 3 is engaged with the engagement hole 5 is also possible.

[0013]

[Effects of the Invention] As described above, the present invention makes it possible to engage
An appropriate distance from the side of the hole and integral with the housing
Boss with lens attached to housing
When the hook is on the opposite side to the hook
Abut the wall surface of the lens opening, and attach the lens to the
The hook is displaced toward the hook
Cars with bosses that restrict lens deformation in the removal direction
The lens mounting structure of the dual-purpose lamp is used, so that the lens and the housing are not separated from each other with a small external stress due to, for example, variations in dimensions, and the reliability of this type of vehicle lamp is extremely improved. It is effective.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a lens mounting structure of a vehicular lamp according to the present invention.

FIG. 2 is a plan view showing a main part of the same embodiment.

FIG. 3 is a sectional view taken along line AA of FIG.

FIG. 4 is a perspective view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Vehicle lamp 2 ... Lens 3 ... Hook 4 ... Housing 5 ... Engagement hole 6 ... Boss D ... Distance from the engagement hole to the boss

Claims (1)

(57) [Scope of request for utility model registration] A plurality of hooks are provided at an end surface of an opening portion of a substantially box-shaped lens so as to protrude from a plate thickness surface, and are provided in a housing so that a thickness of the lens and a step of the hook can pass through. In a mounting structure for a lens of a vehicle lamp which is fixed to a plurality of engaging holes having a possible groove width by being hooked with the hook, an appropriate distance is provided between the housing and a side near the engaging hole.
When the lens is mounted on the housing
The hook is opposite to the surface on which the step is provided.
Abut the wall of the lens opening, and hold the lens
The hook is displaced toward the hook step by the step difference
A lens mounting structure for a vehicle lamp, comprising a boss for restricting deformation of the lens in a detaching direction .