JPH0345368Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a structure for attaching a colored and transparent bulb cap to cover a light source bulb provided in a lamp.

[Conventional technology]

Many light source bulbs used in lamps emit so-called white light or something close to it.

However, for example, in a fog lamp or a signal lamp in a vehicle lamp, there are cases where it is necessary to project a specific colored light. In such cases, a structure in which a bulb cap having a film function is attached to cover the light source bulb is also widely used.

FIG. 3 is a sectional view showing a conventional valve cap mounting structure.

In this conventional example, a bulb holder 2 is fixed to a reflector 1, and a light source bulb (for example, a halogen bulb) 3 is supported by the bulb holder 2.

A bulb cap 4 is provided to cover the light source bulb 3. A flange-like large diameter portion 4a is formed along the opening side edge of the valve cap 4.

an inner flange 5a which has a ring shape and is fitted onto the flange-like large diameter portion of the valve cap 4 and is in contact with a surface opposite to the opening side end surface of the flange-like large diameter portion;
A cap holder 5 is formed. This cap holder 5 is made of a sheet metal structure, and has legs 5b integrally connected thereto.

The legs 5b are crimped and fixed to the valve holder 2, with the inner flange 5a holding the flange-like portion 4a of the valve cap.

[Problem that the invention attempts to solve]

The valve cap 4 must be transparent,
In addition, since it is necessary to cover the high-temperature light source bulb 3, it is a relatively fragile member made of glass or heat-resistant synthetic resin. For this reason, when the valve cap 4 is held down by the cap holder 5 while crimping is performed, there is a risk that an impact will be applied to the valve cap 4, causing cracks or chips, which will reduce the yield. .

This idea was created in view of the above circumstances.
An object of the present invention is to provide a mounting structure for a bulb cap for a lamp, which can be easily mounted without the risk of damaging the bulb cap.

[Means for solving problems]

In order to achieve the above object, the bulb cap mounting structure according to the present invention is such that the bulb cap is disposed to cover the light source bulb mounted on the bulb holder, and the bulb cap is attached to the bulb holder by the cap holder. Applied to a fixed structure, (a) a cylindrical cap holder is made of a material with spring elasticity, and (b) a plurality of tongues are provided at one end of the cylindrical cap holder and bent inward. (c) make a cut from the other end of the cap holder to provide a plurality of leaf spring-like parts; (d) provide a protrusion on the inner surface of each of the leaf spring-like parts; (e) A plurality of holes are provided on the outer peripheral surface of the valve holder, and the projections are engaged with the holes, and (f) the flange-like shape of the valve cap is formed between the inwardly bent tongue piece and the valve holder. The two parts are sandwiched together.

[Effect]

According to the above structure, when the cap holder is fitted onto the valve cap, the protrusions on the inner surface of the cap holder elastically engage with the holes on the outer periphery of the valve holder, so that the valve cap can be quickly and easily removed without crimping work. can be attached to the valve holder.

Moreover, since the valve cap is pressed against the valve holder by the tongue piece, it can be attached without any risk of play.

〔Example〕

FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG.
The figure is also a perspective view.

Reference numeral 6 denotes a valve holder configured according to the present invention, the main body of which is constituted by a cylindrical portion 6a, and is fixed to the reflector 1.

One end of the cylindrical portion 6a (the end of the previous example as a lamp, the upper end in the figure) is bent inward to form an inner flange-like portion 6b.

A cylindrical cap holder 7 that fits onto the cylindrical portion 6a is made of a thin spring steel plate, and has two tongues 7a at its front end, which are bent inward.

(See FIG. 2) Three sets of parallel notches 7b are provided from the rear end side of the cap holder 7, and a leaf spring-like portion 7c is formed between each.

A spherical projection 7d is formed inside the leaf spring-like portion 7c.
form. 7d' in FIG. 2 is a concave portion on the back side where the protrusion is formed.

(See FIG. 1) The flange-shaped portion 4a of the valve cap 4 is pressed down with the aforementioned tongue piece 7a, and the cap holder 7 is fitted onto the valve holder 6.

A recess 6c is provided on the outer circumferential surface of the valve holder 6 so as to face the aforementioned projection 7d, and is engaged with the aforementioned projection 7d.

In the present invention, the hole provided on the outer periphery of the valve holder may be a hole with a bottom (ie, a recess) or may be a through hole.

Since the protrusion 7d in this example is provided on the leaf spring-like portion 7b, it can be freely engaged with and disengaged from the recess 6c due to the bending of the leaf spring-like portion, and the engaged state is reliably maintained.

In addition, the flange-shaped portion 4a of the valve cap 4
Since it is held between the tongues 7a, it is held without play.

[Effect of idea]

As described above in detail, by applying the present invention, the valve cap can be installed quickly, easily, and without play without the risk of damaging the valve cap.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention. FIG. 2 is an exploded perspective view showing an embodiment of the present invention. FIG. 3 is a sectional view of a conventional example. 3...Light source bulb, 3b...Bulb socket,
4...Valve cap, 4a...Flanged part,
6... Valve holder, 6a... Cylindrical part, 6b...
...Inner flange-shaped portion, 6c...Recess, 7...Cap holder, 7a...Language piece, 7b...Notch, 7c...
...Plate spring-like part, 7d...Protrusion.

Claims (1)

[Scope of utility model registration request] In a structure in which a bulb cap is disposed to cover a light source bulb mounted on a bulb holder, and an upper bulb cap is fixed to the bulb holder by the cap holder, (a) a cylindrical cap made of a material having spring elasticity; A holder is constructed, (b) a plurality of tongues are provided at one end of the cylindrical cap holder and formed into a shape bent inward, and (c) a cut is made from the other end of the cap holder. A plurality of leaf spring-like parts are provided, (d) a protrusion is provided on the inner surface of each of the leaf spring-like parts, and (e) a plurality of holes are provided on the outer peripheral surface of the valve holder, and the above-mentioned holes are provided in the holes. A mounting structure for a bulb cap for a lamp, characterized in that a flange-shaped portion of the bulb cap is held between the tongue piece bent inwardly and the bulb holder by engaging the projections.