JPS6038840B2 - Method for manufacturing female electrical connectors - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a female electrical connector, and more particularly to a method for assembling a cylindrical body portion for receiving a male terminal in an electrical contact portion thereof, and an elastic contact plate inserted into the cylindrical body portion. and an improved locking method.

Traditionally, the female and male electrical connections attached to connectors are made of copper.
Although it is integrally formed from a thin metal plate such as brass by punching, bending, etc., the elastic contact plate is prone to elastic fatigue, especially in female electrical connectors, resulting in poor electrical connection reliability. Therefore, recently, female-type electrical connectors have been proposed in which the elastic contact plate is made of a highly elastic metal plate, such as beryllium steel or phosphor bronze, which is different from the electrical connector main body, and has a two-part structure.

FIG. 1 shows an example of a female electrical connector consisting of two parts, A is the main body part of the electrical connector, and this main body part A is a base part 1 made of a thin metal plate such as copper or yellow steel. Electrical contact part A. on the front. , has a structure that achieves an electric wire connection part having a conductor crimping piece 2 and an insulator crimping piece 3 for the electric wire at the rear.
Thus, the electric contact part is formed by bending the tips of the side plates 4a that stand up on both sides of the base plate part 1 inward to form a cylindrical part 4 that receives a female electrical connector. It has a structure in which an elastic contact plate 5 made of the above-mentioned highly elastic metal material is mounted inside.

This elastic contact plate 5 has an arc shape, and horizontal portions 5 at both ends thereof.
a, 5b are hooked onto the folding hooks 6a, 6b provided at the front end of the base plate 1, respectively, to prevent them from being pulled out back and forth, and two stoppers 7 punched from the side plate 4a provide elasticity during connector molding. This prevents the contact plate 5 from coming off in the lateral direction.

Note that 8 is a stopper that prevents the elastic contact plate 5 from sagging excessively. However, when the main body part A of the electrical connector is to be erected, the hook parts 6a and 6b must be folded back on the base plate 1, and stoppers 8 are cut and raised on the side plate 4a to provide elasticity. It is necessary to prevent the contact plate 5 from being pulled out in the lateral direction, and the assembly and molding thereof are troublesome and require a large number of steps, resulting in high manufacturing costs.

The present invention has been made in order to eliminate the above-mentioned drawbacks, and is a female electrical connector that can be easily assembled and molded, and allows an elastic contact plate to be mounted within the cylindrical body without the need for the hook portion or stopper. The purpose is to provide a manufacturing method for.

An embodiment of the present invention will be described below with reference to the drawings.

Note that the same parts as in the conventional example will be described using the same reference numerals. FIG. 2 is a perspective view of the main parts of the female electric auxiliary device according to the method of the present invention, in which the electric contact portion B,
The side plate 4a is provided with locking holes 9a, gb spanning the base plate 1 on both front and rear sides thereof, and projecting holes 9a, gb are provided in the locking holes 9a, 9b on both sides of the horizontal portions 10a, 10b at both ends of the elastic contact plate 10. It is locked by hooking the locking pieces 11a and 11b.

Since the locking pieces 11a and 11b have a tapered shape 11c, the elastic contact plate 10 can be easily assembled without wobbling when assembling or molding the electrical connector.
FIG. 3 is a developed view of the main body B of the electric connector and the elastic contact plate 10, and FIG. 4 A shows the assembly and molding process thereof.

In Fig. 3, B' is the material of the main body part B obtained by punching out copper, steel plate, etc., and small pieces 2', 3', and 4a' are formed on both sides of the board part 1 shown by dotted lines. Then, bend these to form the conductor crimping piece 2, the insulator crimping piece 3, and the cylindrical body part 4.
form. This is the same as the conventional method, but in the present invention, locking holes 9a and 9b spanning between the base plate part 1 and the small piece 4a' are opened during punching of the material B', and the cylindrical part 4 is The elastic contact plate 10 is incorporated during the bending process.
That is, as shown in FIG. 4A, with the small pieces (side plates) 4a' standing obliquely on both sides of the base plate 1, the locking pieces 11a, 11b of the elastic contact plate 10 are inserted facing the locking holes 9a, 90. Apply.

At this time, since the stopper piece 11a has a tapered shape 11c, there is no problem with the clearance between the stopper piece 11a and the locking hole 9a, and it can be set without difficulty (FIG. 5A).
Next, by bending the small piece 4a' perpendicularly to the base plate 1, a tapered locking piece 11 is formed as shown in FIGS. 4 and 5.
a is iron-fitted to the locking hole 9a, and the elastic contact plate 1 is securely fixed. 6 and 7 show other application examples of the present invention, in which the main body C of the female electrical connector shown in FIG. The locking piece 11b is provided to be sufficiently wider than the locking piece 11b, so that the locking piece 11b can slide back and forth within the hole 9b'.

In addition, the main body D of the female electrical connector shown in FIG.
Only 0b is used. In both cases of FIGS. 6 and 7, the rear end of the elastic contact plate 10 is free and slides in the same direction as the insertion direction of the male electrical connector, so it feels soft when pushed in. A sufficient reinforcement load can be obtained, and the method of locking the elastic contact plate 10 can be exactly the same as that shown in FIG.

As described above, the present invention provides a locking hole 9a extending between the substrate part 1 of the material B' constituting the main body of the female electrical connector and the small piece 4a', and , 4a' are made to stand obliquely against the base plate, and then tapered tapered parts 1 are provided protruding from both sides of the front end of the elastic contact plate 10 facing the locking hole 9a.
Apply the locking piece 11a of 1c, and then
', 4a' are bent perpendicularly to the base plate 1, and the elastic contact plate 10 is locked to the cylindrical body part 4, so that the elastic contact plate 10 can be easily formed in the process of forming the cylindrical body part 4. Moreover, it is securely locked, and it is possible to reduce the manufacturing cost by avoiding an increase in the number of steps due to the provision of hooks and stoppers for the elastic contact plate as in the past.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional female electrical connector having a two-part structure, Fig. 2 is a perspective view of the main parts of a female electrical connector according to the present invention; Developed view of the plate: ``Figure 4A, Figure 5A, Figure 5A, Figure 5 is an explanatory diagram of the respective molding process, Figures 6 and 7 are main points of a female connector showing other application examples of the present invention. Fig. 4 is a side view of the main body of the female electrical connector;
...Cylinder part, 4a...Side plate, 9a, gb9b'...
... Locking hole, 10 ... Elastic contact plate, 11a, 11b.
...Latching piece. Blind drawing No. 2* Traditional drawing 3 Traditional drawing 4 Traditional drawing 5 Traditional drawing 6th traditional drawing

Claims (1)

[Claims] 1 Form a material B' by punching out small pieces 2', 3' on both sides of the rear part of the base plate part 1 and small pieces 4a' on both sides of the front part, and form these small pieces 2', 3', 4a'. Method for manufacturing a female electrical connector by bending to form a conductor clamping piece 2, an insulator clamping piece 3, and a cylindrical part 4, and attaching an elastic contact plate 10 to the cylindrical part 4. Then, after opening a locking hole 9a spanning between the substrate part 1 and the small piece 4a' of the material B', and standing the small pieces 4a' and 4a' on both sides diagonally with respect to the substrate part 1, Apply the locking pieces 11a having a tapered shape 11c protruding from both sides of the front end of the elastic contact plate 10 facing the locking hole 9a, and then insert the small pieces 4a', 4a' perpendicularly to the base plate 1. A method for manufacturing a female electrical connector, characterized in that the elastic contact plate 10 is bent and locked to the cylindrical body part 4.