JP3028429U - Light bulb receiving mechanism - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To provide a strong and stable light bulb mechanism that is easy to manufacture. [Structure] A base end portion of a receiving metal 3 set in the outer casing 1 is locked to a hard insulating bottom plate 2 provided on the inner bottom portion of the insulating outer casing 1, and the light receiving male screw fitting is attached to the receiving metal 3. One of the lead wires 15 is connected to the hard insulating bottom plate 2, and a contact bullet for the central charging portion 9 of the light bulb 7 is set in the hard insulating bottom plate 2, and one end of the contact bullet is bent and described above. An elastic contact portion for the central charging portion 9 of the light bulb 7 is formed and a connection portion for the other conducting wire 16 is formed at the other end portion, and the intermediate portion of the contact bullet is inserted into the through hole 12 of the hard insulating bottom plate 2 described above. A small projection 10 is formed in the insertion portion, which is elastically locked in the through hole 12 as the insertion portion.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a light bulb receiving mechanism, and an object thereof is to provide a light bulb receiving mechanism which is easy to manufacture and assemble, and which is capable of appropriately forming a strong and stable light receiving mechanism.

[0002]

[Prior art]

 Light bulbs are an indispensable means for illuminating necessary parts today, and since the light bulbs need to be installed and removed as appropriate, the socket mechanism for them is also indispensable. Various types are used, but in any case, the base and the terminal fitting are embedded and fixed in the insulator.

That is, a contact elastic piece for contacting a central charging portion protruding from the center portion of a light bulb is attached to a receiving member screwed with a base of a light bulb. The two are made by facing each other inside and outside of the receiving money and fixed by caulking with rivets or eyelets. If necessary, an elastic contact plate for contacting the charging part formed in the center of the light bulb. A part is attached, or the bottom part of the above-mentioned receiving plate is crimped by holding it from both sides using a hard synthetic resin material and an elastic contact plate, and further, it is formed on the portion of the contact part of the elastic contact plate facing the bulb charging part. The end of the electric wire is connected to the protrusion by soldering or caulking.

[0004]

[Problems to be solved by the device]

 In any case, the conventional light bulb receiving mechanism as described above has a large number of constituent parts, and particularly in the case of a socket for a small light bulb used in a home refrigerator or the like, it is hard-insulated with phenol as described above. The size of the small pieces and other small parts is considerably small, and such small parts must be handled with trouble such as using tweezers. Of course, it is not easy to crimp and fix such parts.

Further, as described above, the light bulb receiving mechanism, which has many parts and is difficult to assemble, naturally has the disadvantage of increasing cost and being prone to failure.

[0006]

[Means for Solving the Problems]

 The present invention has made extensive studies on solving the above-mentioned problems in the prior art, and simplifies the attachment to the rigid insulating bottom plate by simply processing the contact elastic member for the central charging part of the light bulb, and obtains a stable attachment state. It was a successful one, and was as follows.

(1) A hard insulating bottom plate provided at the bottom of an insulator-made outer shell is engaged with a base end portion of a receiver set in the outer jacket, and the receiver is connected to a male light bulb fitting for a light bulb. In addition to connecting the lead wires of the above, the hard insulating bottom plate is provided with a contact bullet for the central charging part of the light bulb. An elastic contact part for the other part and a connecting part for the other conducting wire at the other end, and the middle part of the contact piece serves as an insertion part for the through hole of the hard insulating bottom plate and the insertion part. The light bulb receiving mechanism is characterized in that a small protrusion that is elastically locked to the through hole is formed in the portion.

(2) It is characterized in that both sides of the insertion portion with respect to the through hole of the hard insulating bottom plate are respectively bent to form a contact portion for the central charging portion of the light bulb and a connecting portion for the other conducting wire with respect to the central charging portion. The light bulb receiving mechanism according to the item (1).

(3) The hard insulating bottom plate is prepared as a synthetic resin molding material, and the small projection of the contact bullet inserted into the through hole of the hard insulating bottom plate is recessed on the inner surface of the through hole due to plastic deformation over time. The light bulb receiving mechanism described in any one of the above items (1) and (2), characterized in that it is locked only at the end.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A concrete embodiment of the present invention as described above will be described with reference to the accompanying drawings. As shown in FIG. The middle portion of the contact bullet 4 is inserted into the through hole 12 formed in the bottom plate 2 by being fixed to the peripheral portion, and the central charging portion of the light bulb 7 as shown in FIG. 9. A through hole 12 is formed so that the contact bullet 4 having the anti-bending portion 13 having the contact projection 11 that contacts 9 is inserted, and the through hole insertion portion of the contact bullet 4 has a dowel-like shape. The small protrusion 10 is formed so as to be fixed to the through hole 12.

That is, the height of the contact bullet 4 and the small projection 10 is set to be slightly larger than the width of the through hole 12 (for example, about 0.1 mm), and by inserting this into the through hole 12, a predetermined position is obtained. The contact bullet 4 is inserted and fixed in this way, and the insertion end side is formed into a bent portion 14 bent at a right angle as shown in FIG. The exposed conductor 16 of the other covered electric wire 6 is connected to the curved portion 14 by soldering or the like. The exposed conductor 15 of one of the covered electric wires 5 is attached to the base 3 described above and similarly connected by soldering or the like. It is a molded product.

That is, the base 8 of the light bulb 7 is screwed into the female screw portion of the receiving metal 3, and the central charging portion 9 as described above is joined to the contact protrusion 11 in the anti-bending portion 13 of the contact bullet 4 to light up. It is clear that a condition can be formed.

It has been experimentally confirmed that, according to the present invention, after the contact bullet 4 is inserted into the through hole 12, it is locked and fixed separately as shown in FIG. ing . That is, it is clear that the small projection 10 is joined to the through hole 12 under the elastic pressure condition, that is, the contact elastic piece 4 itself such as phosphor bronze has a relatively strong elastic force, and as the hard insulator bottom plate 2. Since it is common to use a hard synthetic resin material today, the bottom plate 2, which is a hard synthetic resin material, also has some elasticity and is plastically deformed under the condition that the acting force is continuously received. To do. That is, it is clear that the small protrusion 10 continuously acts on the wall surface of the through hole 12 with elasticity to form the recess 17 due to the plastic deformation, whereby a firm and stable attachment can be obtained.

According to the present invention as described above, the base end portion of the receiver set in the outer casing is locked to the hard insulating bottom plate provided at the bottom of the outer casing made of an insulating material, and the receiving metal is electrically charged. In the one in which one lead wire is connected to the ball cap and the contact bullet for the central charging part of the light bulb is set on the hard insulating bottom plate, one end of the contact bullet is bent and described above. An elastic contact part for the central charging part of the light bulb is formed, a connection part for the other conductor is formed at the other end, and the middle part of the contact bullet is an insertion part for the through hole of the hard insulating bottom plate described above. At the same time, by forming a small protrusion for elastically locking the through hole in the insertion portion, the contact bullet can be attached by simply inserting it into the through hole of the hard insulating bottom plate, that is, a special hard insulating plate is received. 2 for parts It is easy to assemble without the need for complicated structures such as mounting them in a stacked state.

Further, both sides of the insertion portion of the contact bullet with respect to the through hole of the hard insulating bottom plate are respectively bent to form a contact portion for the central charging portion of the light bulb and a connecting portion for the other conducting wire to the central charging portion. Thus, the contact bullet can be stably attached to the hard insulating bottom plate.

The above-mentioned hard insulating bottom plate is prepared as a synthetic resin molding material, and the small projection of the contact bullet inserted into the through hole of the hard insulating bottom plate is dented by plastic deformation over time on the inner surface of the through hole. Since the contact bullets are easily inserted into the hard insulating bottom plate by being locked at, they are firmly and stably attached.

[0017]

[Effect of device]

 According to the present invention as described above, it is easy to assemble and manufacture this kind of light bulb receiving mechanism, and a preferable light bulb receiving portion is formed with a relatively simple structure, especially for a small light bulb having a diameter of 20 mm or less. Since it can be manufactured and provided simply and efficiently and as having a desired strength, it is a device having a great effect in practical use and manufacturing.

[Brief description of drawings]

FIG. 1 is a sectional view of a light bulb receiving mechanism according to the present invention.

FIG. 2 is a side view showing an example of a light bulb attached to the receptacle mechanism shown in FIG.

FIG. 3 is a cross-sectional view showing a state in which a synthetic resin molded body is used as a hard insulating bottom plate and a small projection of the contact bullet is fixed by plastic deformation.

[Explanation of symbols]

 1 Insulator Mantle 2 Hard Insulator Bottom Plate 3 Receiving 4 Contact Bullet 5 One Covered Wire 6 Other Covered Wire 7 Light Bulb 8 Base 9 Central Charging Part 10 Small Projection 11 Contact Projection 12 Through Hole 13 Inversion Part 14 Bent part 15 Conductive wire 16 Conductive wire 17 Depression due to plastic deformation

Claims (3)

[Scope of utility model registration request] 1. A hard insulating bottom plate provided at the bottom of an insulator-made outer casing is made to engage with a base end portion of a receiver set in the outer casing, and one lead wire for a light bulb male screw fitting is attached to the receiver. In addition to the connection, in the hard insulating bottom plate, a contact bullet for the central charging part of the light bulb is set, in which one end of the contact bullet is bent to elastically contact the central charging part of the light bulb. And a connecting portion for the other conducting wire is formed at the other end, and the intermediate portion of the contact bullet is used as an insertion portion for the through hole of the hard insulating bottom plate and the through hole is provided for the insertion portion. A light bulb receiving mechanism characterized by forming a small protrusion that is elastically locked. 2. The rigid insulating bottom plate, wherein both sides of the insertion portion with respect to the through hole are bent to form a contact portion for the central charging portion of the light bulb and a connecting portion for the other conducting wire for the central charging portion. The light bulb receiving mechanism according to Item 1. 3. A hard insulating bottom plate is prepared as a synthetic resin molding material, and a small projection of a contact bullet inserted into the through hole of the hard insulating bottom plate is formed on the inner surface of the through hole due to plastic deformation over time. The electric bulb receiving mechanism according to any one of claims 1 and 2, which is locked.