JPH076634Y2 - 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, by inserting the adapter plug into a body formed in a cylindrical shape, The present invention relates to an improvement of a device for assembling a two-pronged fork-shaped contact terminal piece that is assembled so as to be a contact electrode piece of a jack portion formed on the rear end side of a body.

[0002]

2. Description of the Related Art In an adapter plug, a contact terminal piece incorporated into a body of a body formed in the shape of an axial cylinder so as to be a contact pole piece of a jack portion on the rear end side of the body has its front end side In the inside of the body, the plug is provided so that it is connected to the tip or metal ring that is the outer pole of the plug portion provided on the front end side of the body so that it is attached to the front end of the body. As for the contact terminal piece to be connected to the provided chip, FIG.
As shown in FIG. 1, the chip 1 assembled on the front end side (the left end side in FIG. 1) of the body a assembled in the shape of a tubular cylinder.
A shaft hole-shaped fitting hole 10 is formed in the shaft center portion of the rear end portion from the rear end surface of the metal plate having a spring property so as to be bored along the shaft core line toward the front end side. The two-pronged fork-shaped contact terminal piece 2 to be stamped and formed has a main body 2a.
A strip-shaped plate 2b having a narrow width and slightly wider than the inner diameter of the fitting hole 10 and protruding forward is integrally formed on the front end side of the contact hole 2 and the body a. By inserting the strip-shaped plate 2b of the strip-shaped plate 2b into the fitting hole 10 formed at the rear end which is the inner end of the chip 1 at the front end of the body a, The strip-shaped plate 2b is joined to the chip 1 by fitting them by crimping.

In the case where the adapter plug A has three poles, the contact terminal piece 4 is assembled in the body a so that the front end side is connected to the metal ring 3 which is the second outer pole of the plug portion. Then, as shown in FIG.
On the front end side of the main body 4a of the contact terminal piece 4 formed by punching out a metal plate having a spring property, a strip plate 4b protruding forward with a width slightly wider than the inner diameter of the metal ring 3 is formed from the metal plate of the material. The strip-shaped plate 4b is formed integrally with the strip-shaped plate 4b, and slit-shaped split grooves 40 are formed in the front-rear direction, and the left and right side edges of the strip-shaped plate 4b are directed outward. A harpoon-shaped protrusion 41 protruding in a saw-tooth shape is formed, and the strip-shaped plate 4b is attached to the metal ring 3 as shown in FIG.
It is performed by press-fitting and fitting on the inner peripheral side of the metal plate, and by the pressure contact between the strip-shaped plate 4b and the inner peripheral surface of the metal ring 3.

[0004]

SUMMARY OF THE INVENTION The above-mentioned conventional means is
Contact terminal pieces 2 and 4 for the chip 1 or metal ring 3
Since the connection between the metal plates is performed by press-fitting the strip-shaped plates 2b and 4b into the fitting hole 10 provided in the chip 1 or the inner peripheral surface of the metal ring 3, the metal members are pressed together. In this case, the electrical connection is good and the connection is strong, but when using as an adapter plug, another plug B is inserted into and removed from the jack portion b on the rear end side of the body a. Each time, the contact terminal pieces 2 and 4 are pushed and pulled to move the strip-shaped plates 2b and 4b in the press-fitting direction, so that the pressure-contact surface between the metal material having no engaging portion and the metal material is loosened. However, there is a problem in that there are problems such as poor continuity and detachment of the contact terminal pieces 2 and 4.

The present invention has been made in order to solve this problem that has occurred in the conventional means.
A strip plate 2b provided on the front end side of the contact terminal pieces 2 and 4 on the inner peripheral surface of the fitting hole 10 or the metal ring 3 provided on the rear end side.
By press-fitting 4b, the metal material and the metal material are fitted with each other in a pressure contact state so that the electrical connection is improved and the coupling work is simplified. , The contact terminal pieces 2 and 4 are moved in the press-fitting direction of the strip-shaped plates 2b and 4b by repeatedly inserting and removing another plug B into and from the jack portion b on the rear end side of the body when used as an adapter plug. Even if so, the fitting hole 10 of the chip 1 or the inner peripheral surface of the metal ring 3 and the strip-shaped plates 2b, 4b
It is an object of the present invention to provide a new means for preventing the loosening of the pressure contact surface with and.

[0006]

In order to achieve this object, the present invention provides a rear end portion of a tip assembled to a front end portion of a body of an adapter plug, and a front end portion of the tip. Forming a fitting hole to face toward the rear end portion of the rear end of the chip in the inner cavity of the body, the strip of the front end side is press-fit into the fitting hole to fit the contact terminal piece. A cylindrical portion whose inner wall surface is pressed against both left and right edges of the front end of the main body is formed by an insulating material of a synthetic resin material for assembling the body, and is provided on both left and right edges of the front end of the main body of the contact terminal piece. The present invention provides a device for assembling a contact terminal piece in an adapter plug, which is formed by forming a lance-shaped small protrusion that bites into the inner wall surface of a cylindrical portion made of the above-mentioned insulating material, and an outer peripheral portion of the body of the adapter plug on the front end side. At the rear of the metal ring assembled to In the inner peripheral portion of the die, a strip-shaped plate on the front end side is press-fitted to fit on the inner peripheral surface of the metal ring. A cylindrical portion in which inner wall surfaces are pressed against both left and right edges of the front end of the main body of the contact terminal piece. Is formed by molding an insulating material of a synthetic resin material for assembling the body, and a lance-shaped small portion that is embedded in the inner wall surface of the cylindrical portion made of the insulating material is formed on both left and right edges of the front end portion of the main body of the contact terminal piece. The present invention provides a device for assembling a contact terminal piece in an adapter plug provided with a protrusion.

[0007]

Embodiments will be described in detail with reference to the drawings. In addition,
As for the reference numerals in the drawings, the same reference numerals are used for components having the same effects as those of the conventional means.

FIG. 5 is a vertical side view of a three-pole adapter plug A embodying the present invention. In FIG. 5, a is a body, 1 is a tip mounted on the front end side of the body a, and 2 is the tip. 1. A contact terminal piece 3 in which a strip plate 2b on the front end side is press-fitted into a fitting hole 10 formed on the rear end side of 1 and 3 is a body a
A metal ring 4 attached to the outer peripheral portion on the front end side of 4 is a contact terminal piece connected to the metal ring 3 on the front end side.

The body a is a chip 1 serving as a first pole.
And a metal ring 3 serving as a second pole and a metal sleeve 5 serving as a third pole are integrally insert-molded in a state of being insulated by an insulating material 6 made of a synthetic resin material, thereby forming a shaft cylindrical shape. The rear end side of the metal sleeve 5 serving as the third pole, which is the body of a normal three-pole adapter plug, is provided on the rear end side of the body a and the socket 7 of the jack b is provided.
It is connected and connected to 0.

When the chip 1 is assembled into a body a which is insert-molded with the metal ring 3, the metal sleeve 5 and the like and is integrally joined with the insulating material 6 made of a synthetic resin material, the chip 1 is well coupled with the insulating material 6. For this purpose, a nipple-shaped protruding portion 11 is formed at the rear end side axial core portion so as to protrude rearward. The fitting hole 10 for assembling the contact terminal piece 2 is formed so as to be recessed from the rear end surface of the nipple-shaped protruding portion 11 to the depth reaching the inside of the main body 1a of the chip 1. Further, by forming the fitting hole 10, the nipple-shaped projecting portion 11 has a thickness of a part or the whole of the entangled portion 11a of the nipple-shaped projecting portion 11 that is thin enough to be easily deformed by external pressure. Has been formed.

The contact terminal piece 2 is formed by punching out a metal plate having a spring property so that the tip 1 is formed on the front end side of the forked body 2a as shown in FIG. It is formed in a shape having a strip-shaped plate 2b protruding forward with a width slightly wider than the inner diameter of the fitting hole 10 provided. Then, at the left and right edges of the strip-shaped plate 2b, the strip-shaped plate 2b is inserted into the fitting hole 10 to the base end as shown in FIG. Lance-shaped small projections 20 and 20 projecting outward are formed in a portion corresponding to the thin portion formed in the curved portion 11a, and the main body of the contact terminal piece 2 has a forked shape. The left and right side edges of the front end of the 2a are also formed with protrusions 21 protruding outward in a lance shape. But,
Of these small projections 21 ... 21, the small projections 20 formed on the left and right side edges of the strip plate 2b may be omitted.

[0012] w is the inner cavity of the body a, and is the aforementioned tip 1
A portion of the tubular portion formed by the insulating material 6 made of a synthetic resin material, which is located rearward of the rear end, and which opposes the left and right side edges of the forked body 2a of the contact terminal piece 2 described above. The inner diameter of the main body 2a is slightly larger than the width of the front end of the main body 2a. And this
When the contact terminal piece 2 is inserted into the inner cavity of the body a and the strip plate 2b on the front end side is pressed into the fitting hole 10 of the chip 1, the front end portion of the main body 2a of the contact terminal piece 2 is inserted. The left and right side edges of the contact portion are pressed against the inner wall surface of the cylindrical portion w, and at that time, the lance-shaped small protrusions 21 and 21 provided on the left and right side edges of the front end portion of the main body 2a of the contact terminal piece 2. However, as shown in the enlarged view of FIG. 10, it sticks to the inner wall surface of this cylindrical portion w made of a synthetic resin material.

Further, as shown in FIG. 8, the cylindrical portion w made of the synthetic resin insulating material 6 is a portion corresponding to the latter half side of the inner peripheral surface of the metal ring 3 and has the aforementioned tip. 1
The contact terminal piece 2 into which the strip plate 2b is fitted and inserted in the fitting hole 10 of
On the other hand, the portion displaced in the circumferential direction by 90 degrees is cut off so as to expose the inner peripheral surface of the metal ring 3.

The second contact terminal piece 4 for connecting the front end side to the metal ring 3 has a strip-shaped plate 4b formed on the front end side of the bifurcated fork-shaped body 4a thereof. The metal ring 3 is electrically connected to and electrically connected to the metal ring 3 by being press-fitted and fitted into a portion where the inner peripheral surface of the metal 3 is exposed.

The second contact terminal piece 4, like the contact terminal piece 2 described above, is formed by punching from a metal plate having a spring property, so that a strip-shaped plate is formed on the front end side of the forked body 2a. 2b is formed in a continuous shape so as to project forward, and the width of the strip plate 4b is set to be slightly wider than the inner diameter of the metal ring 3.

On the left and right side edges of the strip-shaped plate 4b, lance-shaped small projections 41 projecting outward are formed as shown in FIG. 9, and the fork-shaped main body 4 is formed.
Small lance-shaped projections 42 ... These small protrusions 41 ... 4
2 may be omitted for small projections 41 provided on the strip-shaped plate 4b.

Reference numeral y denotes a cylindrical portion formed of an insulating material 6 at a portion closer to the rear of the metal ring 3 in the inner cavity of the body a. The insulating material 6 is a synthetic resin material for assembling the body a.
Of the metal sleeve 5, which is located on the inner peripheral side of the metal sleeve 5. The inner diameter of the inner wall surface of the cylindrical portion y facing the left and right edges of the main body 4a of the contact terminal piece 4 is formed to be slightly larger than the left and right width of the main body 4a. I am doing it.

As a result, the second contact terminal piece 4
The contact terminal piece 4 in a predetermined positioning state.
Is inserted into the inner cavity of the body a, and the strip-shaped plate 4b on the front end side is press-fitted onto the inner peripheral side of the metal ring 3 to be fitted to each other. Is in pressure contact with the inner wall surface of the cylindrical portion y formed of, and at this time, the main body 2a
The small lance-shaped projections 42 provided on the side edges of the inner peripheral surface of the cylindrical portion y are made to bite into the inner wall surface of the cylindrical portion y made of the insulating material 6 made of synthetic resin, as shown in the enlarged view of FIG. .

The embodiment apparatus thus configured operates as follows. Contact terminal piece 2 inserted in the inner cavity of body a
When the strip-shaped plate 2b at the front end side of the contact terminal piece 2 is press-fitted into the fitting hole 10 formed at the rear end side of the chip 1 to be fitted to the left and right sides of the forked body 2a of the contact terminal piece 2. The side edge is pressed against the inner wall surface of the cylindrical portion w made of the insulating material 6 made of synthetic resin, and the lance-shaped small projections 21 provided on the side edge of the body 2a of the cylindrical portion w of the cylindrical portion w. It will be in a state of biting into the inner wall surface.

Therefore, the contact terminal piece 2 and the chip 1 are electrically connected by the pressure contact between the metal material and the metal material by pressure contact between the inner peripheral surface of the fitting hole 10 and the side edge of the strip plate 2b. To improve the strength and bond firmly. At the same time, the contact terminal piece 2 is in a state in which the lance-shaped small projections 21, 21 provided on the side edge of the main body 2a of the contact terminal piece 2 are embedded in the inner wall surface of the cylindrical portion w of the synthetic resin material. The plate 2b is attached so as not to move in the front-back direction, which is the direction in which the plate 2b is press-fitted.

Further, the contact terminal piece 4 inserted into the body a and fitted with the strip-shaped plate 4b on the front end side to the inner peripheral surface of the metal ring 3 by press fitting, the side edge of the main body 4a at the time of press fitting. The lance-shaped small projections 42, 42 provided on the inner surface of the cylindrical portion y made of a synthetic resin material are embedded in the inner wall surface of the cylindrical portion y, and like the contact terminal piece 2 described above, pressure contact between metal materials is performed. The electrical connection is made good by means of the lance-shaped small projections 42, 42 and the synthetic resin material is bite into the tubular portion y by the lance-shaped small projections 42 at the same time. It is locked so that it does not move in the direction.

[0022]

As described above, the device for assembling the contact terminal piece in the adapter plug according to the present invention is a strip-shaped plate provided integrally with the main body 2a, 4a on the front end side of the contact terminal piece 2, 4. The contact terminal piece 2 and the chip 1 or the contact terminal piece 4 are formed by press-fitting 2b and 4b into the fitting hole 10 provided on the rear end side of the chip 1 or the inner peripheral surface of the metal ring 3. The metal ring 3 and the metal ring 3 are tightly and firmly connected to each other by pressure welding between the metal materials so as to have good electrical continuity, and at the same time, the main body 2a.
The lance-shaped small protrusions 21 and 42 provided on the side edge of the body 4a are made of the synthetic resin insulating material 6 for assembling the body a.
Bite into the inner wall surface of the cylindrical part wy formed in the inner cavity of
Since the strip-shaped plates 2b and 4b are not moved in the front-rear direction, which is the press-fitting direction, the work of electrically connecting them well and firmly connecting them can be performed easily while making contact. Even if the terminal pieces 2 and 4 are pushed back and forth by the plug B that is inserted into and removed from the jack part b, the terminal pieces 2 and 4 are held so as not to move in the front-back direction, and the fitting hole 10 of the chip 1 or the metal ring 3 is held. Inner peripheral surface and strip plate 2b
・ The slack will not occur on the pressure contact surface with 4b.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of an adapter plug according to a conventional means.

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

FIG. 3 is a transverse plan view of the same adapter plug.

FIG. 4 is a partially cutaway plan view of the metal ring of the adapter plug and the contact terminal piece connected to the same.

FIG. 5 is a vertical sectional side view of an adapter plug according to the present invention.

FIG. 6 is a side view of the above adapter plug.

FIG. 7 is a partially cutaway side view of the same adapter plug chip and the contact terminal piece connected thereto.

FIG. 8 is a transverse plan view of the same adapter plug.

FIG. 9 is a partially cutaway plan view of the metal ring of the adapter plug and the contact terminal piece connected to the same.

FIG. 10 is an enlarged vertical side view of a connecting portion between the contact terminal piece of the adapter plug and the chip.

FIG. 11 is an enlarged cross-sectional plan view of a connecting portion between the contact terminal piece of the adapter plug and the metal ring.

[Explanation of symbols]

A ... Adapter plug, B ... Plug, a ... Body, b ...
Jack part, wy ... Cylindrical part, 1 ... Chip, 1a ... Main body, 10 ... Fitting hole, 11 ... Projection part, 11a ... Tucked part, 2
... Contact terminal piece, 2a ... Main body, 2b ... Strip-shaped plate, 20.2.
1 ... Small protrusion, 3 ... Metal ring, 4 ... Contact terminal piece, 4a ...
Main body, 4b ... Strip plate, 40 ... Split groove, 41.42 ... Small projection, 5 ... Metal sleeve, 6 ... Insulating material, 70 ... Receptacle.

Claims (2)

[Scope of utility model registration request] 1. A fitting hole 10 is formed in a rear end portion of a tip 1 which is assembled to a front end portion of a body a of an adapter plug A, and a fitting hole 10 is formed from the rear end surface of the tip 1 toward the front. At the rear portion of the rear end portion of the chip 1 in the cavity, the fitting hole 1
The strip-shaped plate 2b on the front end side is press-fitted into 0 to fit the cylindrical portion w whose inner wall surface is in pressure contact with both left and right edges of the front end portion of the main body 2a of the contact terminal piece 2 and is made of a synthetic resin material. Lance-shaped small projections 21 formed on the inner wall surface of the cylindrical portion w made of the insulating material 6 at both left and right edges of the front end portion of the main body 2a of the contact terminal piece 2, 21 is a device for assembling the contact terminal piece in the adapter plug. 2. A strip-shaped plate on the front end side on the inner peripheral surface of the metal ring 3 at the inner peripheral portion of the body a behind the metal ring 3 assembled to the outer peripheral portion on the front end side of the body a of the adapter plug A. The cylindrical portion y whose inner wall surface is in pressure contact with both left and right edges of the front end of the main body 4a of the contact terminal piece 4 into which the contact terminal 4b is press-fitted is formed by the insulating material 6 made of synthetic resin for assembling the body a. In the adapter plug, which is provided with lance-shaped small projections 42, 42 which are embedded in the inner wall surface of the cylindrical portion y made of the insulating material 6, on both left and right edges of the front end portion of the main body 2a of the contact terminal piece 2. Assembly device for contact terminal pieces.