JPH024449Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pin plug, particularly a plug-in type pin plug.

[Conventional technology]

Conventionally, this type of pin plug was
For example, as shown in Fig. 3 A and B, a hollow mold pin 2 is provided with a conductive wire insertion hole 3 at its tip, and a hollow mold pin 2 is fitted into the starting end of this mold pin 2. It is composed of an insulating base 9 which is fitted together and fixed, and a cylindrical insertion cover 6 which is fitted and fixed to the outer periphery of this insulating base 9, and the hollow mold pin 2
and the insulating base 9 are fixed by sandwiching the periphery of the center hole 9a of the insulating base 9 between the circumferential flange 2a and the folded portion or expanded portion 2b of the opening end. Further, the insulating base 9 and the cylindrical insertion cover 6 are fixed by caulking, or by being held between the stepped portion 6a of the insertion cover 6 and a raised claw 6b. It was hot.

[Problems that this invention attempts to solve]

However, in the conventional pin plug as described above, the hollow mold pin 2 must be processed to form the flange 2a, and the insulating base 9 must be molded separately, resulting in a large number of parts. thing,
Fixing the hollow mold pin 2 and the insulating base 9 requires crimping such as caulking, and when the pin plug is connected to and removed from the socket, the end of the pin, that is, the part where it is fixed to the insulating base 9, Because the largest force is applied, this caulked part gradually loosens, and the hollow mold pin 2 may become unsteady and eccentric, making it unusable.
There are various problems, such as the fact that the insulation resistance and withstand voltage become small as the insulation resistance and withstand voltage become close to the insertion cover 6, and the range of use thereof is limited.

Furthermore, fixing the insertion cover 6 and the insulating base 9 requires a bending process in which the cut and raised claws 6b are bent and the insulating base 9 is held between the step portion 6a from both left and right sides, which increases the number of processing steps. There is a problem with increasing the number of insulating bases 9.
In the case where a disc-shaped object as shown in the figure is used and fixed to the insertion cover 6 by caulking, the structural strength is reduced because the contact surface between the insulating base 9 and the insertion cover 6 is narrow during crimping work. It is weak, and since a large cavity S is formed at the rear end of the insulating base 9, this cavity S is crushed, resulting in poor yield.

[Means for solving problems]

The purpose of this invention is to provide a solution to the conventional problems as described above. An insulator on a disk of different diameters having a hollow part is molded and fixed with adhesive to the hollow mold pin, and a cylindrical insertion cover with a wire cord fixing part at the starting end is installed inside the insulator. The pin plug is characterized in that the fitted insulators are fixed by caulking from the outside at different diameter portions.

〔Example〕

Hereinafter, the present invention will be explained in detail based on the embodiment shown in Figs. 1 and 2. In the figures, 1 is a pin plug main body, approximately in the center of which a conductive wire insertion hole 3 is bored at the tip. A hollow mold pin 2 made of a conductive material such as brass is provided in a protruding manner.

Reference numeral 4 denotes a disc-shaped insulator of different diameters made of a synthetic resin material such as Bakelite, which is formed by molding. It is integrally adhesively fixed to the mold pin 2, and has a hollow portion 4a inside and a large diameter portion 4b and a small diameter portion 4c outside.

Reference numeral 5 designates a cylindrical insertion cover into which the insulator 4 is inserted and then caulked from the outside to hold and secure the insulator 4 therein. That is, as shown in FIG. By inserting the insulator 4 fixed to the inserting cover 5 into the insertion cover 5, the two are loosely fitted at the different diameter portions. Then, the insulator 4 and the insertion cover 5 are fixed by applying pressure to the different diameter portions 4b and 4c of the insertion cover 5 from the outside.

Reference numeral 6 denotes a fixed part of the electric wire cord 7 which is continuous to the rear end of the insertion cover 5, and in the embodiment shown in FIG. In another embodiment shown in the figure, when the fixing part 6 is formed, as shown in FIG. ing. That is,
The fixing part 6 is composed of a pair of fixing members 6a and 6b provided at opposing positions at the starting end of the insertion cover 5, and one of the fixing members 6b is connected to the other fixing member 6a.
The electric wire cord 7 is folded back to the side and held and fixed by both fixing members 6a and 6b. In addition,
Reference numeral 8 in the figure denotes a conductive wire at the core of the electric wire cord 7, which is inserted into the conductive wire insertion hole 3 of the hollow mold pin 2.

In the embodiment shown in FIG. 1, the electric wire cord 7 is inserted into the insertion cover 5 from the right side of the fixing part 6 of the pin plug body 1, and the electric wire exposed from the tip of the electric wire cord 7 is The conductive wire 8 is inserted into the conductive wire insertion hole 3 of the hollow mold pin 2.

Next, caulk the tip of the hollow mold pin 2 or
Alternatively, the hollow mold pin 2 and the conductive wire 8 are connected by soldering or the like, and the electric wire cord 7 inside the fixed portion 6 is fixed to the fixed portion 6 by caulking the electric wire cord 7 and the pin plug body. 1 and fixed. In addition, in the case of the embodiment shown in FIG. 2, as described above, one of the fixing members 6b is folded back to the other fixing member 6a side, the electric wire cord 7 is held by both fixing members 6a and 6b, and the It is fixed by caulking, and the rest is the same as the previous embodiment.

[Effect of idea]

As described above, the pin plug according to the present invention is made by molding an insulator on a disk of different diameters having a hollow part at the end of a rod-shaped hollow mold pin through which a conductive wire insertion hole is inserted. It is fixed with adhesive and integrally with the pin, and a cylindrical insertion cover with a wire cord fixing part at the starting end is fixed by caulking from the outside at the different diameter part of the insulator fitted inside the cover. Therefore, the hollow mold pin and the insulator are firmly adhesively fixed and integrated by high heat and pressure during molding of the insulator, and the hollow mold pin is resistant to twisting during mounting and has structural strength. will improve.

Furthermore, since the cylindrical insertion cover and the insulator fitted inside it are fixed by caulking the insertion cover from the outside at the different diameter portion of the insulator,
The contact area between the two is large. Therefore, while the structural strength of the fixing part is high, other parts are not crushed, and there are various effects such as high performance and high yield.

[Brief explanation of drawings]

1A and 1B are half-cut sectional views showing the pin plug according to the present invention in the order of manufacturing steps, 2A, 2B and 2C are overall perspective views showing the processing steps of another embodiment, and 3A and 3B are perspective views showing the manufacturing process of another embodiment. These are half-cut sectional views showing a conventional pin plug in the order of manufacturing steps. 1...Pin plug body, 2...Hollow mold pin,
3... Conductor wire insertion hole, 4... Insulator, 5... Insertion cover, 6... Fixed part, 7... Electric wire cord, 8...
...Conducting wire.

Claims (1)

[Scope of utility model registration request] A disc-shaped insulator with a hollow portion of different diameters is molded onto the end of a rod-shaped hollow mold pin with a conductive wire insertion hole inserted through it, and is adhesively fixed integrally with the hollow mold pin. A pin plug characterized in that a cylindrical insertion cover with a wire cord fixing part is fixed by caulking from the outside at a different diameter part of an insulator fitted inside the cover.