JPH076633Y2 - Assembling device for contact terminal piece in adapter plug - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an adapter plug used to convert the number of poles or the outer diameter of a body to be an outer pole, and insert the adapter plug into the body to insert the tip at the front end of the body. The present invention relates to an improvement of a fork-shaped fork-shaped contact terminal piece assembling means that is assembled to a rear end portion of the contact piece in a connected state.

[0002]

2. Description of the Related Art An adapter plug A is inserted into a body a formed in the shape of an axial cylinder, and is connected to the rear end of a chip 1 mounted on the front end of the body a. Chip 1 of forked fork-shaped contact terminal piece 2 to be attached
Previously, as shown in FIG. 1, the assembling means for the front end of the tip 1 is attached to the front end portion of the tip end of the tip 1 mounted on the front end of the tubular body a along the front end of the tip end along the center axis. A shaft-hole-shaped fitting hole 10 that is formed toward the side is formed as shown in FIG. 2, and a metal plate having a spring property is punched to form a fork-like contact. In the terminal piece 2,
As shown in FIG. 2, a narrow strip 20 having a width slightly larger than the inner diameter of the fitting hole 10 is provided on the front end side of the metal plate, which is a material of the contact terminal piece 2, from the contact terminal. Piece 2
The strip-shaped plate 20
Is press-fitted into the shaft-hole-shaped fitting hole 10 provided at the rear end of the chip 1 as shown in FIG.
The strip plate 20 is deformed by the spring property of its material, so that the left and right side edges of the strip plate 20 are pressed against the inner wall surface of the fitting hole 10 and are integrally connected to the chip 1. As a result, the chip 1 is assembled.

[0003]

According to the above-mentioned conventional means, the connection between the chip 1 and the contact terminal piece 2 is such that the inner wall surface of the fitting hole 10 provided in the chip 1 and the contact terminal pressed into the fitting hole 10. Since it is carried out by pressure contact with the left and right side edges of the strip-shaped plate 20 of the piece 2, electrical conductivity is good immediately after assembly and the connection is strong, but it is used as an adapter plug. At this time, another plug B inserted into and removed from the jack portion b at the rear end of the body a repeats insertion and removal with respect to the two-forked fork-shaped contact electrode 21 of the contact terminal piece 2, and thus the contact terminal piece 2 By moving the strip-shaped plate 20 in the press-fitting direction of the strip-shaped plate 20, the side edge of the strip-shaped plate 20 and the inner wall surface of the fitting hole 10 are loosely joined by pressure contact,
There is a problem that the contact terminal piece 2 and the chip 1 may be disconnected from each other or that electrical connection between them may be defective.

The present invention has been made in order to solve these problems occurring in the conventional means, and the connection of the contact terminal piece to the chip allows the insertion and removal of another plug when the adapter plug is used. It is an object of the present invention to provide a new assembling means that provides a durable connection that does not loosen even after repeated use.

[0005]

In the present invention, as a means for achieving the above-mentioned object, a nipple-shaped protrusion is provided on the rear end side of the tip assembled to the front end side of the body of the adapter plug. Is provided at the axial center portion of the protruding portion with a fitting hole that is formed from the rear end surface of the protruding portion toward the front to a depth reaching the main body portion of the tip, and the nipple-shaped protruding portion is twisted. Part or all of it is formed into a thin part, and a strip-shaped plate protruding forward with a width slightly wider than the inner diameter of the fitting hole is provided on the front end side of the forked contact terminal piece. Is formed integrally and continuously, and a thin portion formed at the side edge of the nipple-shaped protruding portion in the state where the strip plate is press-fitted into the fitting hole. An adapter formed by forming a protrusion that protrudes outwardly in a small area at the location corresponding to It is intended to raise the assembling device of the contact terminal strip in the plug.

[0006]

Embodiments Next, embodiments will be described in detail with reference to the drawings. The same reference numerals are used for the constituent elements having the same effect as those of the conventional means.

FIG. 3 is a vertical sectional side view of an adapter plug A according to the present invention, in which a is a body and 1 is a body.
Is a chip assembled to the front end of the body a, and 2 is a forked contact terminal piece connected to the rear end of the chip 1.

The adapter plug A is a three-pole adapter plug in this embodiment, and the body a of the adapter plug A has the above-mentioned chip 1 as the first pole, as shown in FIG.
And the metal ring 3 serving as the second pole and the metal sleeve 4 serving as the third pole are assembled via the insulating material 5, and the metal sleeve 4 serving as the third pole of the metal ring 3 is the rear end portion of the body a. Is connected to the socket fitting 60 of the jack portion b mounted on the.
Further, as shown in FIG. 6, the second pole metal ring 3 has a second forked contact terminal piece 7 to be inserted into the body a formed on the front end side thereof. Strip 7
By press-fitting 0 into the inner cavity of the metal ring 3, the left and right side edges of the metal ring 3 and the inner peripheral surface of the metal ring 3 are pressure-contacted with each other to be electrically connected and integrally assembled. ing.

The chip 1 has a rear end side from the central portion in order to improve the biting of the insulating material 5 when the body a is assembled by insert molding with the insulating material 5 made of a synthetic resin material. Nipple-shaped protrusion 1 protruding rearward
1 is formed, and a fitting hole 10 in the shape of a shaft hole for assembling and assembling the contact terminal piece 2 in the shape of a fork is formed from the shaft center portion of the rear end surface of the nipple-shaped protrusion 11. The chip 1
It is shaped so as to face the front end side along the axis of the.

As shown in FIG. 4, the fitting hole 10 has a depth D that is deeper than the protruding length of the nipple-shaped protruding portion 11 as shown in FIG. It is designed so that it can reach up to.

Further, the lapped portion 11a of the nipple-shaped protruding portion 11 provided on the rear end side of the above-described tip 1 has a part or the entire wall thickness in the circumferential direction in which the fitting hole 10 is formed. Thus, it is formed to be extremely thin so that it can be easily deformed by receiving external pressure.

The bifurcated fork-shaped contact terminal piece 2 is formed by punching out a metal plate having a spring property to form a pair of contact electrodes 2.
A normal fork having a fork shape having 1.21 and a fitting hole 10 formed in the above-mentioned chip 1 on the front end side thereof by a metal plate of a material. A strip-shaped plate 20 that projects forward with a narrow width corresponding to the inner diameter is formed integrally and continuously.

The strip plate 20 has a fitting hole 10
The width of each of the left and right sides of the fitting hole 10 is formed to be slightly wider than the inner diameter of the fitting hole 10 provided in the chip 1 so that the fitting hole 10 is press-fitted to the inner peripheral surface of the fitting hole 10 to be joined. As shown in FIG. 3, the protrusion length L of the chip 1 is such that the front end of the contact terminal piece 2 is beyond the nipple-shaped protrusion 11 when the shoulder of the contact terminal piece 2 abuts the rear end surface of the chip 1. It is formed so as to be fitted into the fitting hole 10 in a state where it is inserted into the main body portion of.

Further, on the left and right side edges of the strip plate 20, the thin wall formed on the entangled portion 11a of the nipple-shaped protruding portion 11 in a state of being fitted in the fitting hole 10 of the chip 1 described above. The small harpoon-shaped protrusions 22 and 22 are formed in a portion corresponding to the portion, and when the strip-shaped plate 20 is press-fitted into the fitting hole 10, the protrusions 22 and 22 are formed.
As shown in FIG. 3, a deformed portion w that is extruded in the outer peripheral direction is generated in the thin portion formed in the twisted portion 11a of the nipple-shaped protruding portion 11, and the deformed portion w is formed in the deformed portion w. It is designed to be inserted.

Therefore, in the device of this embodiment, the strip-shaped plate 20 on the front end side of the forked contact terminal piece 2 is attached to the chip 1.
When press-fitted into the fitting hole 10 provided in the fitting hole 10, a deformed portion w that fits toward the outer peripheral side is generated on the inner wall surface of the fitting hole 10, and this deformed portion w Strip 20
The harpoon-shaped protrusions 22 and 22 on the side edge of the
At the same time as the side edge of the strip plate 20 and the inner wall surface of the fitting hole 10 are pressed together by press fitting, the deformation plate w and the harpoon-like protrusion 22 are engaged with each other, so that the strip plate 20 is attached to the chip 1. It is connected so that it does not move in the press-fitting direction.

[0016]

As described above, the apparatus for assembling the contact terminal piece in the adapter plug according to the present invention has the strip-shaped plate 20 formed on the front end side of the fork-shaped contact terminal piece 20 in the chip 1. Fitting hole 10 formed on the rear end side
When it is press-fitted into and fitted to the outer periphery of the fitting hole 10, the thin portion formed in the entangled portion 11a of the nipple-shaped protruding portion 11 provided on the rear end side of the tip 1 fits the inner wall surface of the fitting hole 10 to the outer peripheral side. A deformed portion w is generated, and the protrusion 2 on the side edge of the strip 20 is generated there.
2 is biting into the fitting hole 10 of the strip plate 20.
Simultaneously with the press-fitting into the chip 1, the protrusions 22 and the deformed portion w interfere with each other to make the strip plate 20 immovable in the press-fitting direction with respect to the chip 1. Therefore, the contact terminal piece 2 is connected to the chip 1. However, when the adapter plug is used, it is a durable and strong connection that does not loosen even if the plug B is repeatedly inserted and removed.

[Brief description of drawings]

FIG. 1 is a vertical side view of a conventional adapter plug.

FIG. 2 is a partially cutaway side view of the same adapter plug chip and contact terminal piece.

FIG. 3 is a vertical sectional side view of an adapter plug according to the present invention.

FIG. 4 is a partially cutaway side view of the same adapter plug tip and contact terminal piece.

FIG. 5 is a side view of the same adapter plug.

FIG. 6 is a transverse plan view of the same adapter plug.

[Explanation of symbols]

A ... Adapter plug, B ... Plug, a ... Body, b ...
Jack part, D ... Depth of recess, L ... Projection length, 1 ... Chip, 10 ... Fitting hole, 11 ... Projection part, 11a ... Twisted part, 2
... Contact terminal piece, 20 ... Strip plate, 21 ... Contact electrode, 3 ... Metal ring, 4 ... Metal sleeve, 5 ... Insulating material, 60 ... Receptacle metal fitting, 7 ... Contact terminal piece, 70 ... Strip board.

Claims (1)

[Scope of utility model registration request] 1. A nipple-shaped projecting portion 11 is provided on the rear end side of a tip 1 assembled to the front end side of a body a of an adapter plug A, and a rear end surface of the projecting portion 11 is provided at an axial center portion thereof. From the tip to the fitting hole 10
Is formed to a depth reaching the main body portion, and a part or the whole of it is formed in a thinned portion in the twisted portion 11a of the nipple-shaped protruding portion 11, and the front end of the bifurcated fork-shaped contact terminal piece 2 is formed. On the side, a strip-shaped plate 20 protruding forward with a width slightly larger than the inner diameter of the fitting hole 10 is formed integrally and continuously, and the strip-shaped plate 20 is fitted on the side edge thereof. In the state of being press-fitted into the dowel hole 10, a protrusion 22 that projects slightly toward the outside is formed at a portion corresponding to the thin portion formed on the entangled portion 11a of the above-mentioned nipple-shaped protrusion 11. Device for assembling contact terminal pieces in adapter plugs.