JPS6330115Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a light bulb with a base used for lighting, particularly for various lighting lights for automobiles.

(Prior Art) Generally, in this type of light bulb with a cap, the cap and the bulb are fixed with an adhesive. However, when the adhesive part becomes hot when the bulb is turned on, the adhesive deteriorates and crumbles, producing powder, and in severe cases, the bulb may come off from the cap. Furthermore, since an adhesive is used in the manufacturing process, additional work and equipment are required for applying and drying the adhesive, which results in poor workability.

(Purpose of the invention) The present invention was made in order to eliminate the drawbacks of the conventional technology.The purpose of this invention is to assemble the valve and the cap in a stable state without using adhesive, and to simplify the manufacturing process. The aim is to provide light bulbs that can be

(Structure of the invention) The present invention, which has been made to achieve this object, includes a valve having a flat pinch seal portion of a predetermined length, and an outer cap having an opening into which the pinch seal portion of the valve is inserted. It consists of a cap, an inner cap that holds the lower end of the pinch seal part, and a cap to which these two caps are attached, and protrusions are provided near the lower ends of both sides of the pinch seal part, and the tips of the respective protrusions engage with the caps. A light bulb characterized in that a pair of elastic clamping pieces are formed inwardly from opposite bottom edges of the inner base cap, and the ends thereof are inclined downward toward the center, wherein the outer base cap The neck of the valve and the protrusion of the pinch seal are engaged between the opening of the cap and the elastic clamping piece of the inner mouth cap, respectively.
Even without the use of adhesive, stable attachment can be achieved due to the elastic engagement between the two.

(Embodiment) Next, the present invention will be explained in more detail with reference to the illustrated embodiment. Reference numeral 1 denotes a valve, and the valve has a pinch seal portion 2 of a predetermined length formed at its lower part, and a Lead wire 3 is taken out to the outside. Furthermore, protrusions 4 are formed on both sides near the lower end of the pinch seal portion 2. These protrusions are formed integrally when forming the pinch seal part 2, and a predetermined distance exists between them and the neck part 5 of the pinch seal part 2.

The outer cap 6 into which the valve 1 or the pinch seal portion 2 is inserted has a substantially disk shape, and an opening 7 into which the pinch seal portion 2 of the valve fits is formed in the center thereof. The portion has a rectangular shape as a whole, and a partial protrusion 8 is formed in a portion to impart elasticity, and this protrusion is bent downward.

The inner cap 6a has a cylindrical shape, and is integrally provided with a pair of elastic clamping pieces 9, 10 extending from the bottom edge toward the inner center.
The tips 9a, 10a of the elastic clamping pieces 9, 10 are formed to be inclined toward the lower center.
And the opening 7 of the outer base cap 6 described above.
The spacing or distance between the clamping pieces 9 and 10 of the inner mouth cap 6a to the tips 9a and 10a is approximately equal to the spacing or distance from the neck portion 5 of the bulb to the protrusion 4. Incidentally, a notch 14 for taking out the lead wire 3 of the valve may be formed on the side surface.

The cap 11 to which the outer cap cap 6 and the inner cap cap 6a are attached is made of a cylinder with a bottom, similar to the cap of this type of light bulb, and has the necessary number of holes 12 for taking out the lead wires 3 on the bottom surface. There is. A ring 13 is fitted and fixed approximately in the center of this base.

To assemble each part configured in this way, first insert the valve 1 into the opening 7 of the outer base cap 6.
Next, insert the pinch seal part 2 into the inner mouth cap 6a so that the pinch seal part 2 is sandwiched between the elastic clamping pieces 9 and 10, and the neck part 5 is inserted into the opening. Elastic clamping pieces 9, 10 are placed on the protrusion 4 at a position where the edge of 7 touches or does not touch.
The end of the valve will start to ride up, and if you push the valve slightly forcefully from this state, the elastic clamping pieces 9,
The tip portions 9a, 10a of 10 completely go over the protrusion 4 and fall to the foot of the protrusion 4, and are engaged with the snap without rattling. In this state, the outer mouth cap 6, the inner mouth cap 6a, and the valve 1 are in a stable assembled state, and then these mouth caps 6, 6a are attached to the upper surface of the mouthpiece 11.

These two caps and the base can be attached, for example, by fitting the inner base cap 6a into the base 11 and simply welding the outer base cap 6 to the base 11, or by standing on the periphery of the outer base cap 6. A descending wall 6b is formed, and the descending wall 6b is attached so as to cover the upper outer side of the cap 11, and is integrated by crimping the descending wall 6b. Of course, before carrying out this welding or caulking means, the valve 1
Needless to say, the conventional wire connection work such as passing the lead wires 3 taken out from each other through predetermined holes or taking them out to the base 11 side through the notch 14 is performed. Finally, the ring 13 is attached to the circumferential surface of the cap 11 (by welding, etc.) to complete the light bulb.

(Effects of the invention) As explained above, the light bulb according to the invention has a protrusion on the pinch seal part of the bulb, an opening into which the pinch seal part is inserted into the outer base cap to which the bulb is attached, and a pinch seal. A pair of elastic clamping pieces that engage with the base of the protrusion are provided at the bottom of the inner base cap that holds the lower part of the valve, and the elastic clamping pieces can be removed by simply pushing the valve into the double-capture cap. The manufacturing process is extremely simple, as the three parts are simply joined together stably without alignment, and the outer cap is welded or crimped to the cap, and no adhesive is used. Therefore, it can be applied to bulbs that become hot when lit, and has the excellent effect that the bulb does not fall off due to deterioration of the adhesive.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the light bulb of the present invention showing each component separated, and FIG. 2 is a cross-sectional view of the light bulb in a fully assembled state. 1...Valve, 2...Pinch seal part, 3...
Lead wire, 4... Protrusion, 5... Neck, 6... Outer cap, 6a... Inner cap, 7...
... opening, 8 ... protrusion, 9, 10 ... elastic clamping piece, 9a, 10a ... tip, 11 ... cap, 1
2...hole, 13...ring, 14...notch.

Claims (1)

[Scope of utility model registration request] A valve having a flat pinch seal part of a predetermined length, an outer mouth cap having an opening into which the pinch seal part of the valve is inserted, an inner mouth cap holding the lower end of the pinch seal part, and both of these parts. It consists of a base to which a base cap is attached,
Protrusions are provided near the lower ends of both sides of the pinch seal part, and a pair of elastic clamping pieces whose tips engage with the protrusions are formed inward from opposite bottom edges of the inner mouth cap, and the ends thereof are A light bulb characterized by being slanted toward the lower center.