JPH11154575A - Bulb socket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bulb socket which stably and electrically connects a bulb and a terminal by preventing the terminal from being plastically deformed by installation of the bulb. SOLUTION: Sandwiching pieces 24 of a terminal 20 are housed inside a bulb installing hole 33 arranged in a housing 30, and a pair of protective walls 35 are formed in an opening of the bulb installing hole 33 so as to cover tip parts of the respective sandwiching pieces 24. When an electrode part 12 is pushed in a place dislocated from an inserting port 35A of the bulb installing hole 33, the electrode part 12 is prevented from colliding with the sandwiching pieces 24 by the protective walls 35. Therefore, since the sandwiching pieces 24 are largely push-expanded and are not plastically deformed, the stable electric connection of a bulb 10 and the terminal 20 can be kept.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a valve socket for a wedge-based valve.

[0002]

2. Description of the Related Art Conventionally, as a valve socket of this kind,
The one shown in FIG. 6 is known. The valve socket 1 includes a valve terminal 3 inside a housing 2, and a pair of holding pieces 4 provided on the terminal 3.
The electrode portion 6 of the bulb 5 is sandwiched between the bulbs 4 so that the bulb 5 and the terminal 3 are electrically connected. The valve socket having the same structure as the valve socket
No. 41387.

[0003]

By the way, in the above-described valve socket 1, when the valve 5 is mounted on the valve socket 1, as shown in FIG.
4, the holding piece 4 may be plastically deformed in the expanding direction as shown in FIG. in this case,
As a result, the gap between the holding pieces 4 and 4 is widened so that the electrode portion 6 cannot be held, and there is a problem that the bulb 5 and the terminal 3 are not stably electrically connected.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a valve socket in which a terminal is prevented from being plastically deformed by mounting a valve, and the valve and the terminal are stably electrically connected. .

[0005]

In order to achieve the above-mentioned object, according to the present invention, a valve mounting hole in which an electrode portion of a wedge base valve can be inserted is formed in a housing, and a terminal accommodated in the housing is formed in a terminal. In a valve socket in which a pair of holding pieces are extended from the back side of the valve mounting hole to the opening side and an electrode portion is held between the holding pieces so as to be in electrical contact with the opening of the valve mounting hole. The present invention is characterized in that a protective wall that covers the tip of the holding piece and allows the insertion of the electrode portion is provided.

According to a second aspect of the present invention, in the valve socket according to the first aspect, a guide surface is formed on an outer surface of the protective wall for properly guiding the electrode portion of the wedge base valve into the valve mounting hole. However, it has features.

[0007]

According to the first aspect of the present invention, even if the electrode portion of the wedge base valve is pushed out of the normal position of the valve mounting hole, the tip of the holding piece is covered with the protective wall and the electrode is inserted. Since the portions do not abut, the holding piece is not greatly pushed and spread. Thereby, plastic deformation of the holding piece is prevented, and the valve and the terminal are stably electrically connected.

According to the second aspect of the present invention, when the electrode portion of the wedge base valve is pressed against the outer surface of the protection wall, the electrode portion is guided to a regular position of the valve mounting hole by the guide surface provided there.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
A description will be given with reference to FIG. In FIG.
Reference numeral 0 denotes a glass single-sphere type wedge base bulb (hereinafter, referred to as a “bulb 10”), in which a flat electrode part 12 is continuously provided at the lower end side of a substantially cylindrical hollow light emitting part 11. A pair of lead wires 13 connected to the filament F in the light emitting portion 11 are drawn out from both ends of the bottom of the electrode portion 12 and are bent on both side surfaces of the electrode portion 12 respectively. Thus, a pair of contacts 14 is formed. At both sides of the electrode portion 12 where the lead wire 13 is provided, a locking groove 16 extends in a lateral direction at a substantially central height position, and a valve terminal 20 (hereinafter, referred to as a valve terminal 20 described later) is provided here. "Terminal 20"
) Are locked.

The valve socket 41 is shown in FIGS. 2 to 4 and has a pair of terminals 2 inside the housing 30.
0, 20 are provided. Terminal 20
Is formed as shown in FIG. 1 by cutting and bending a metal plate, and includes a connecting portion 21 electrically connected to the electrode portion 12 and a crimping portion 22 crimped to the electric wire D. The connecting portion 21 includes a pair of holding pieces 2 on both sides of the substantially rectangular base 23.
4, 24 are bent and raised.

The two holding pieces 24, 24 extend in a cantilever shape in the upper part of FIG. 1, and have curved portions 24B, 24B whose leading ends are close to each other. The tip of the holding piece 24 from the curved portion 24 </ b> B extends away from the opposite holding piece 24, and the regulating protrusion 25 protrudes from the tip toward the base 23 side. The two regulating protrusions 25 are arranged on both sides of a protruding piece 40 protruding from the upper end of the base 23, and when the holding piece 24 is greatly deformed in the closing direction, the regulating protrusion 25 comes into contact with the protruding piece 40 and is held. The amount of deformation of the piece 24 is regulated.

A rectangular locking hole 27 is formed in the center of the base 23 in the width direction, and a resin lance 32 provided on the housing 30 is locked here. A receiving piece 28 is bent from the lower edge of the locking hole 27 toward the holding piece 24, and the lower end position of the electrode portion 12 is regulated by the receiving piece 28 (see FIG. 3). Further, as shown in FIG. 2, a positioning projection 29 is struck out of the base 23 below the locking hole 27 on the side opposite to the holding piece 24.
9 contacts the locking surface 34 in the cavity 31 to determine the insertion depth of the terminal 20 into the cavity 31.

On the other hand, the housing 30 is made of a synthetic resin, and the terminal 20 is inserted through lower end side openings 31A of a pair of cavities 31 formed vertically in FIG. A resin lance 32 is provided on the inner wall of the cavity 31.
Is extended in a cantilever shape toward the top of the figure,
When the terminal 20 is inserted into the cavity 31, the resin lance 32 is pushed by the terminal 20, bends once, is restored, and is locked to the terminal 20 in a retaining state (see FIG. 2).

The upper openings of the cavities 31, 31 communicate with each other as shown in FIG.
Constitutes a valve mounting hole 33 in which a can be mounted. Then, as shown in FIG. 3, the holding piece 24 of the terminal 20 housed in the cavity 31 is housed in a state of extending from the back side of the valve mounting hole 33 to the top opening side, and the electrode inserted from the top opening. The part 12 is clamped between the clamping pieces 24, 24.

Now, in the upper opening of the valve mounting hole 33,
As shown in FIG. 3, a pair of protective walls 35, 35 are formed so as to cover the tip of each holding piece 24. Both protective walls 3
There is no insertion opening 35A in which the electrode portion 12 can be inserted between the gaps 5 and 35, and a guide surface 35B inclined toward the insertion opening 35A is formed on the upper surface of each protective wall 35. The distance between the inner wall of the valve mounting hole 33 and the tip of the holding piece 24 (see the dimension L in FIG. 5) is set so that the two contact each other before the holding piece 24 exceeds the range of elastic deformation. Thereby, plastic deformation of the holding piece 24 is reliably prevented.

This embodiment has a structure as described above,
Subsequently, the operation will be described. To mount the bulb 10 in the bulb socket 30, the electrode portion 12 of the bulb 10 is pushed into the insertion hole 35A of the bulb mounting hole 33 between the two protective walls 35. Then, the electrode section 12 advances to the back while pushing the holding pieces 24, 24 in the expanding direction in the valve mounting hole 33. Then, the curved portion 24B of the holding piece 24 enters into the locking groove 16 of the electrode portion 12 and locks, and contacts the contact 14 to electrically connect the terminal 20 and the valve 10 (see FIG. 3).

As shown by the arrow A in FIG. 3, the electrode portion 12 of the bulb 10 is inserted into the insertion hole 35A of the bulb mounting hole 33.
May be pushed out of the way. However, in the valve socket 30 of the present embodiment, the holding piece 2
Since the front end of 4 is covered with the protective wall 35, the electrode portion 12 does not abut, and the holding piece 24 is not greatly pushed and spread. In addition, on the upper surface of the protection wall 35,
Since the guide surface 35B is formed, the electrode portion 12 is guided by the guide surface 35B into the insertion opening 35A of the valve mounting hole 33 as shown by the arrow B in FIG. 24, 24. Further, as shown in FIG.
Even if the electrode portion 12 hits the diagonally to the 4B and the holding piece 24 is pushed in the expanding direction, the holding piece 24 comes into contact with the inner wall 33B of the valve mounting hole 33 before being plastically deformed (see FIG. 5).
The holding piece 24 can return to its original state due to its elasticity, and does not remain spread.

As described above, according to the valve socket 30 of the present embodiment, the holding piece 24 is not greatly deformed until it reaches plastic deformation.
0 is stably connected electrically.

<Other Embodiments> The present invention is not limited to the above embodiments. For example, the following embodiments are also included in the technical scope of the present invention.
In addition to the following, various changes can be made without departing from the scope of the invention. (1) The present invention is not limited to the single ball type illustrated in the above embodiment, but can be similarly applied to a double ball type valve socket.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a valve and a terminal.

FIG. 2 is a side sectional view of a valve socket.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a side cross-sectional view of the valve socket showing a state where an electrode portion is in contact with a holding piece;

FIG. 5 is an enlarged sectional view showing an opening of a valve mounting hole.

FIG. 6 is a side sectional view of a conventional valve socket.

FIG. 7 is a side sectional view of the valve socket in a state where the terminal has undergone plastic deformation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Wedge base valve 20 ... Valve terminal 24 ... Nipping piece 30 ... Housing 33 ... Valve mounting hole 35 ... Protective wall 35B ... Guide surface 41 ... Valve socket

Claims (2)

[Claims] 1. A valve mounting hole in which an electrode portion of a wedge base valve can be inserted is formed in a housing, and a pair of holding pieces are provided in a terminal accommodated in the housing from a back side of the valve mounting hole to an opening side. Is extended, and the electrode portion is sandwiched between the holding pieces so as to be in electrical contact with each other. In the opening of the valve mounting hole, the tip of the holding portion is covered while covering the tip portion of the holding piece. A valve socket provided with a protective wall that allows insertion. 2. The valve socket according to claim 1, wherein a guide surface is formed on an outer surface of the protection wall for properly guiding an electrode portion of the wedge base valve into a valve mounting hole. .