JPS6151779A - Lamp socket - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lamp socket, and an object of the present invention is to ensure that the lamp base and the socket are securely engaged at the engagement portion.

An example of the present invention is shown in FIGS. 1 to 71
It is used for a shaped fluorescent lamp 1, etc., and consists of a socket body 3 that holds the base 2 of the lamp 1, and a plug holder 5 that electrically connects the lamp pin 4 of the base 2 (Figures 2 and 3). .

The cap 2 has a pair of engagement protrusions 6 protruding from its sides for attachment to the socket body 3.

The plug receiver 5 includes a cylindrical cover 8 in which a number of receiving lowers corresponding to the number of pins that receive the lamp pins 4 are bored, and a contact 10 in which the receiving lowers are elastically closed by a coil compression spring 9 from the inside of the receiving lower. The plug body 11 is formed with a lead wire insertion hole 12, and a lead wire 13 is inserted into the winding portion of the coil compression spring 9 through the insertion hole 12. A pair of retaining protrusions 14 are provided on the side of the cylindrical cover 8 so as to protrude from the sides of the cylindrical cover 8 for soldering to the contacts 10 and for attaching the plug receptacle 5 to the socket body 3.

The socket body 3 also includes a recess 15 that accommodates the cap 2 and a small cylindrical portion 16 that accommodates the plug receiver 5.
A slit 17° 17' in the insertion direction (axial direction) is formed in the inner side of each of the small cylindrical portions 16, so that the protrusion 6 of the cap 2 and the protrusion 14 of the stopper body 5 slide, and the slit 17 Continuing from .17', engagement recesses 18 and 1B' in the form of circumferential horizontal grooves are formed at the bottoms of the slits 17 and 17', respectively, and by twisting the cap 2 and plug holder 5, the protrusion 6 and the protrusion L4 are formed. engaging recess 18
．． 18', and is prevented from coming off by the elastic force of the coil compression spring 9 described above.

The details of the combined deafness of the socket body 3 and the plug receiver 5 are shown in FIG. The contactor 10 supporting the other end of the coil compression spring 9 biases the inner side of the receiving lower and hence the cylindrical cover 8, and presses the protrusion 14 thereof.
and the engagement recess 18', and the cap 2 is fitted into the recess 15'.
When fitted, the pin 4 presses the contact 10 to establish electrical contact, and the spring reaction causes the protrusion 6 of the cap 2 to elastically engage the engagement recess 18. When this contactor 10 is pressed, the contactor 10 does not come into contact with the inside of the receiver lower, so the spring action on the cylindrical cover 8 disappears, but rotation is prevented by the pin 4 inserted through the receiver lower and it is not engaged. It does not move from the mating recess 18 to the slit 17'.

FIG. 5 shows the protrusion 6 when the base 2 is attached. The positional relationship between the lower receiving part of the lamp pin 4 and the protrusion 14 of the cylindrical cover 8 of the plug receiving body 5 is shown. That is, the plug receiver 5 is I41! before being used as a socket component. In order to facilitate transportation and to facilitate attachment of the cap 2, it is necessary to temporarily fix the lamp pin 4 and the receiving lower 4 so that they can be inserted. Therefore, the directions of the picks 7) 17 and 17' are made perpendicular to each other with respect to the center O,
After inserting the plug receiver 5 into the small cylindrical portion 16 through the slit 7) 17', as shown in FIG.
7 in the same direction as the coil compression spring 9 to temporarily fix it. The lower receiver is positioned so that the lamp pin 4 can be inserted in this temporarily fixed state. Figure 7 shows the lamp 1.
This is the state in which the cap 2 is inserted and twisted in this temporarily fixed state.

In order to securely hold the stopper holder 5 in this temporarily fixed state and in the final state, a protrusion 20 is provided on the protrusion 14, and a positioning fitting recess 21.21' is formed in the engagement recess 18'. There is.

Furthermore, in order to prevent the cap 2 from disengaging and ensure the retention,
A rotation prevention protrusion 22 is formed on the opening side of the engagement recess 18,
Rotation of the attached cap 2 is prevented.

In addition, the operation of attaching and detaching the cap 2 is carried out by holding the lamp tube in hand, but in order to be able to take out the cap 2 if the tube is damaged, an extraction opening 23 is notched in the opening edge of the recess 15 of the socket body 3. Note that 24 is the socket body 3.
This is the mounting hole.

The lamp socket of this embodiment is extremely simple and can be easily repaired because the socket does not require connection means of separate parts such as screws and can be assembled from one direction. Further, since the coil compression spring 9 serves both to mechanically hold the cap and to electrically contact the lamp pin, the structure is extremely simple.

As described above, in the lamp socket of the present invention, the locking protrusion is formed on the opening side of the engaging recess that is engaged to prevent it from coming out when the lamp base of the socket is inserted and twisted, so that the engagement is reliable. ≠There is a fruit.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a lamp using a lamp socket according to an embodiment of the present invention, Fig. 2 is an exploded and assembled perspective view of the plug holder of the lamp socket, and Fig. 3 is a perspective view of the lamp socket main body. , Fig. 4 is a longitudinal cross-sectional view of the socket in use, and Fig. 5 shows the socket body with the plug receptacle inserted.
t is a plan view, its mountain) is a right side view, its fcl is a bottom view, Fig. 6 shows the socket body in a temporarily fixed state of the plug receptacle, its fat is a plan view, and its (bl is a right side view). The top view and FIG. 7 show the socket main body in a used state, its ial is a plan view, and its (bl is a right side view).

Claims (1)

[Claims] A lamp socket comprising an engagement recess that is engaged to prevent the lamp cap from coming out when inserted and twisted, and a rotation prevention protrusion that projects on the opening side of the engagement recess.