JPH0126069Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lamp socket having a side contact piece that contacts the side of a lamp base and a center contact piece that contacts a center terminal portion.

In most conventional lamp sockets, the contact piece that maintains contact continuity with the lamp has two elements: a center contact piece and a cylindrical holder, and because they have completely different shapes, they are manufactured in separate molding processes. was. Also,
In recent years, in order to simplify the socket holder, some sockets have been created in which a screw thread is formed directly on the inner surface of the socket body and a plate-shaped side contact piece is provided in place of the holder; Since the contact piece and the center contact piece have different shapes, they must be manufactured in separate manufacturing processes, increasing the manufacturing cost of the lamp socket.

The present invention takes these conventional problems into consideration, and aims to reduce the number of manufacturing steps and lower manufacturing costs by making it possible to manufacture the center contact piece and the side contact pieces in the same process. It is.

In order to achieve this purpose, the present invention has the side contact pieces and the center contact piece formed in advance in the same shape as long flat plates with notches on both sides of the middle part, and the side contact pieces are not bent. The center contact piece is provided along the inside of the socket body's base insertion hole, and the center contact piece is made to look into the socket body's base insertion hole from the inner bottom, and the upper part is bent toward the center of the base insertion hole with the notch as a boundary. The structure is as follows. With this configuration, the center contact piece and the side contact pieces are manufactured in the same process, that is, the two manufacturing processes are combined into one, and the manufacturing cost can be reduced. The center contact piece can be easily bent due to the notch, while the side contact pieces have notches that do not impair their functionality.

An embodiment of the present invention will be described below based on the drawings.

In the figure, reference numeral 1 denotes a lamp socket, which consists of a socket body 2 and a back cover 3 made of synthetic resin. The socket body 2 has a base insertion hole for the lamp 10, and a screw thread 9, which is a member for holding the base, is provided inside the base insertion hole. The back cover 3 is provided with terminal plates 6 and 7, the lower end of the side contact piece 4 is connected to the terminal plate 6, and the lower end of the center contact piece 5 is connected to the terminal plate 7.

The side contact piece 4 and the center contact piece 5 are preliminarily connected to the third
As shown by the solid line in the figure, it is formed into a long flat plate shape, and has notches 8 on both sides of the middle part. That is, before assembly, the side contact pieces 4 and the center contact piece have exactly the same shape as shown by the solid line in FIG. 3, and are manufactured in the same manufacturing process. When assembling, the side contact piece 4 and the center contact piece 5 are inserted into the base insertion hole from the inner bottom of the socket body, the side contact piece 4 is placed along the inside of the base insertion hole without being bent, and the center contact piece 4 is inserted into the base insertion hole. 5, the upper part is bent toward the center of the cap insertion hole using the notch 8 as a boundary. When bent toward the center, the shape is as shown by the dotted line in FIG. This bending process may be carried out after the center contact piece 5 is assembled into the socket body 2, but of course, before assembly, the contact piece that is to become the center contact piece 5 is inserted into the third It may be bent as shown by the dotted line in the figure and then assembled into the socket body 2 so that the upper part faces toward the center of the base insertion hole. Therefore, the side contact pieces 4 and the center contact piece 5 can be manufactured in exactly the same process except for the step of bending as shown by the dotted line in FIG. 3.

Although not shown, the ends of the terminal plates 6 and 7 extend toward the insertion hole 11 for the external connection wire.

As is clear from the configuration of the above-described embodiments, in the present invention, one of the two contact pieces having the same shape and having a long flat plate shape with notches formed on both sides of the middle part can be used as the side contact piece as it is. Since the other side can be bent at the notch and used as the center contact piece, it is a simplified product in which the side contact pieces and the center contact piece can be manufactured in the same molding process, and the notch can be used as the center contact piece. Since it is provided, the bending process can be easily carried out.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a lamp socket according to the present invention, FIG. 2 is a longitudinal sectional view thereof, and FIG. 3 is a perspective view of a contact piece shape. DESCRIPTION OF SYMBOLS 1... Lamp socket, 2... Socket body, 4... Side contact piece, 5... Center contact piece, 8... Notch part.

Claims (1)

[Scope of utility model registration request] A socket body having a lamp base insertion hole and a member for holding the lamp base inside the base insertion hole, and a socket body having the same shape and having a long flat plate shape and having notches on both sides of the intermediate portion. One of the two contact pieces extends into the base insertion hole from the inner bottom of the socket body, and the upper part of the contact piece extends along one side of the base insertion hole. The upper part of the other contact piece is bent with the notch as a boundary, and extends into the base insertion hole from the inner bottom of the socket body, and the upper part of the other contact piece is bent into the base insertion hole. A lamp socket with a central contact piece facing toward the center of the lamp socket.