JPH07320831A - Socket device - Google Patents

Abstract

PURPOSE:To surely connect an earth terminal to a socket side. CONSTITUTION:A resilient contact portion 74 touching resiliently the internal face of a socket 3 is provided in an earth terminal 7. Thereby, the resilient contact portion 74 of the earth terminal 7 touches resiliently the internal face of the socket 3 so that the earth terminal 7 is surely connected to the socket 3 side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a socket device used in, for example, a vehicle lamp, and more particularly to a socket device capable of reliably connecting a ground terminal to a socket side.

[0002]

2. Description of the Related Art A conventional socket device of this type generally has a hollow inside and a conductive socket having an opening at one end for detachably inserting a valve,
An insulator disposed inside the socket and having a terminal for supplying power to the valve, a spring interposed between the insulator and the socket to press the terminal of the insulator into pressure contact with the valve, and a ground terminal. ing. When the socket is press-fitted and fixed to the insulating socket holder, the ground terminal is interposed between the socket holder and the socket.

[0003]

However, in the above-mentioned conventional socket device, when the socket is press-fitted and fixed to the socket holder, the ground terminal is simply interposed between the socket holder and the socket. , There is a problem whether the ground terminal is connected to the socket side.

An object of the present invention is to provide a socket device in which the ground terminal can be surely connected to the socket side.

[0005]

In order to achieve the above object, the present invention is characterized in that an elastic contact portion which elastically contacts the inner peripheral surface of the socket is provided.

[0006]

According to the present invention, since the elastic contact portion of the ground terminal elastically contacts the inner peripheral surface of the socket, the ground terminal is surely connected to the socket side.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the socket device of the present invention will be described below with reference to the accompanying drawings. In the figure, 1 is a valve. The bulb 1 includes a glass tube 10, a double filament (not shown) enclosed in the glass tube 10, and a base 11 provided under the glass tube 10.
, Two engaging pins 12 provided on the base 11, an insulating portion 13 provided on the lower end surface of the base 11, and the insulating portion 1
3 and the terminal 14 provided on the terminal 3.

In the figure, 2 is a socket holder.
The socket holder 2 is made of, for example, insulating synthetic resin, and has a substantially cylindrical shape with a hollow inside. For example, three engaging claws 20 are provided on the outer peripheral surface of one end of the socket holder 2.
Is integrally provided, and a disk-shaped flange portion 21 is integrally provided on the outer peripheral surface near the one end of the socket holder 2. A large-diameter opening 22 is provided on one end surface of the socket holder 2, and a small-diameter opening 23 is formed on the other end surface of the socket holder 2.
And a medium-diameter through hole 24 is provided in an intermediate portion inside the socket holder 2. The socket holder 2 has, for example, one end portion inserted into a through hole provided in a housing of a vehicle lamp, and an engaging claw 20 and a flange portion 21 sandwich an edge of the through hole of the housing, thereby the vehicle lamp. It is detachably attached to. The socket holder 2 in this example
Is separate from the housing of the vehicle lamp, for example, but may be integral with the housing.

In the figure, 3 is a socket. The socket 3 is a so-called curling socket and is made by pressing a thin steel plate. The socket 3 is made of a conductive thin steel plate and has a substantially cylindrical shape with a hollow inside. Two L-shaped engaging grooves 30 are provided at the edge of the opening at one end of the socket 3 so as to correspond to the engaging pins 12 of the valve 1. Two rectangular engaging holes 31 are provided at the other end of the socket 3. The edge of the opening at the other end of the socket 3 is curved inward and squeezed. The other end of the socket 3 is press-fitted and fixed in the medium-diameter insertion hole 24 from the large-diameter opening 22 of the socket holder 2.

In the figure, 4 is an insulator.
The insulator 4 is made of, for example, an insulating synthetic resin and has a substantially disc shape. The insulator 4 is provided with two small circular through holes 40, and the lower surface of the insulator 4 is provided with two cylindrical portions 41.
It is provided so as to communicate with. Two engaging claws 42 are provided on the edge of the insulator 4, respectively. Further, the thin portion 43 is provided on the edge of the insulator 4, and the convex portions 44 for positioning are provided on three sides of the thin portion 43, respectively.

In the figure, 5 is a lead wire. The terminal 50 is connected and fixed to one end of the lead wire 5. The terminal 50 of the lead wire 5 is press-fitted and fixed in the through hole 40 and the cylindrical portion 41 of the insulator 4. The insulator 4 to which the lead wire 5 is fixed is arranged in the socket 3, and the engaging claws 42 of the insulator 4 are engaged with the engaging holes 31 of the socket 3, respectively. On the other hand, the lead wire 5 is pulled out from the lower opening of the socket 3 and the small-diameter opening 23 of the socket holder 2 to the outside.

In the figure, 6 is a spring. The spring 6 is, for example, a conductive coil spring. The spring 6 is interposed between the lower surface of the insulator 4 and the edge of the lower opening of the socket 4 in a compressed state.

Then, the base 11 of the valve 1 is inserted into the socket 3, the terminal 14 of the valve 1 is brought into contact with the terminal 50 of the insulator 4, and the valve 1 is pushed down against the spring force of the spring 6. At the same time, the engagement pin 12 of the valve 1 is engaged with the engagement groove 30 of the socket 3. As a result, the spring force of the spring 6 urges the insulator 4 upward so that the insulator 4
Therefore, the terminal 50 is pressed against the terminal 14 of the valve 1.

In the figure, 7 is a ground terminal. The ground terminal 7 is made of, for example, a conductive member, and has a fixed portion 71 to which the ground wire 70 is electrically fixed and a fixed portion 7 thereof.
U-shaped holding portion integrally provided at one end of 1 (that is, a part of the middle of the spring receiving portion 72 is bent upward at a substantially right angle, and its tip is bent inward at a substantially right angle, and the tip thereof is further bent. (Clamping part formed by folding back to outside) 7
3 and an elastic contact portion integrally provided on the sandwiching portion 73 (that is, an elastic contact portion formed by bending the tip portion of the sandwiching portion 73 upward at a substantially right angle and further extending to the left and right sides of the tip). 74 and. As shown in FIGS. 1 and 4, the elastic contact portion 74 has an arc shape whose radius of curvature is larger than the radius of curvature of the inner peripheral surface of the socket 3 when viewed in a plan view. A small convex portion 75 is integrally formed on the outer surface of one end of the elastic abutting portion 74 in a long size. The sandwiching portion 73 of the ground terminal 7 is sandwiched in the thin portion 43 of the insulator 4. At this time,
Since the thin portion 43 of the insulator 4 is surrounded on three sides by the positioning protrusions 44, the sandwiching portion 73 of the ground terminal 7 is positioned in the circumferential direction and the inner radial direction of the insulator 4. The outer radial direction will be described later. The position is determined by the contact between the contact portion 74 of the ground terminal 7 and the socket 3. Then, the elastic contact portion 74 of the ground terminal 7 is elastically contacted with the inner peripheral surface of the socket 3. At this time, since the radius of curvature of the elastic contact portion 74 is larger than the radius of curvature of the inner peripheral surface of the socket 3, as shown in FIG. 75 strongly hits the inner peripheral surface of the socket 3, and the elastic contact portion 74 is provided with the contact portion between the elongated one end portion of the elastic contact portion 74 and the positioning projection 44 of the insulator 4 as a fulcrum. The long one end is curved inwardly, and the elastic contact portion 74 has a substantially doglegged shape when seen in a plan view and firmly and elastically contacts the inner peripheral surface of the socket 3. As a result, the ground terminal 7 is reliably connected to the socket 3 side.

Although the double filament bulb 1 has been described in the above embodiment, the socket device of the present invention can also be used for a single filament bulb. In this case, the number of the terminals 50 and the lead wires 5 of the insulator 4 is one or one. Further, in FIG. 4, the terminals 50 and the like of the insulator 4 are omitted for convenience of drawing.

[0016]

As is apparent from the above, the socket device of the present invention can reliably connect the ground terminal to the socket side.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a socket device of the present invention.

FIG. 2 is a cross-sectional view showing the relationship between a ground terminal, an insulator, a spring, and a socket with a valve attached.

FIG. 3 is a cross-sectional view showing a contact state between a terminal of the valve and a terminal of the insulator when the valve is also mounted.

FIG. 4 is a plan view showing an assembling relationship of a ground terminal, an insulator and a socket.

FIG. 5 is an enlarged cross-sectional view showing the relationship between the ground terminal, the insulator, the spring, and the socket with the valve attached.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Bulb, 10 ... Glass tube, 11 ... Base, 12 ... Engaging pin, 13 ... Insulating part, 14 ... Terminal, 2 ... Socket holder, 20 ... Engaging claw, 21 ... Collar part, 22 ... Large diameter Aperture,
23 ... Small-diameter opening, 24 ... Medium-diameter insertion hole, 3 ... Socket, 30 ... Engaging groove, 31 ... Engaging hole, 4 ... Insulator, 40 ... Through hole, 41 ... Cylindrical part, 42 ... Engaging claw , 43 ...
Thin portion, 44 ... Positioning convex portion, 5 ... Lead wire, 50
... terminal, 6 ... spring, 7 ... ground terminal, 70 ... ground wire, 71 ... fixing part, 73 ... holding part, 74 ... elastic contact part, 75 ... small convex part.

Claims (1)

[Claims] 1. A conductive socket having a hollow interior and an opening at one end for removably inserting a valve, and a terminal arranged inside the socket for supplying power to the valve. An insulator having, a conductive spring interposed between the insulator and the socket to press the terminal of the insulator into pressure contact with the terminal of the valve, and a ground terminal, a socket device comprising: A socket device having an elastic contact portion that elastically contacts the inner peripheral surface of the socket.