JPS5939420Y2 - female contact - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a female contact used in electrical connections.

2. Description of the Related Art Recently, many connectors have been used for electrical wiring in automobiles and the like, in which contacts made of a springy conductive plate are incorporated into an outer shell of an insulating molded product such as rubber or plastic.

However, such connectors have the problem that, due to the nature of the material of the outer shell, it is very difficult to "pry" the connectors, so that if the contacts are subjected to prying force when they are mated together, the female contacts may deform and cause poor contact. .

In view of this point, in the case of a rubber shell product, for example, the female contact 1 is covered with a seamless sleeve 2 made of a single material, as shown in Figure 1. The state in which the sleeve is covered is shown by the chain line (A), and the contact piece 3 is fixed.
A structure is adopted that prevents the opening of 4 from opening too much.

However, with this structure, it is necessary to combine three parts into a two-piece structure of the female contact 1 and the sleeve 2, and in order to manufacture the sleeve 2, processing such as 1' squeeze "forging" must be performed. There are many issues with processing and assembly.

Therefore, an object of the present invention is to provide a female contact that is easy to manufacture and has excellent kink resistance.

The present invention will be described below using examples with reference to FIG. 2 and subsequent figures.

FIG. 2 shows an embodiment of the present invention, and this female contact is made of a conductive flat plate member 10 having a shape as shown in a developed view in FIG. 3 and having spring properties.

That is, the flat plate member 10 is provided with a key 13 having a protrusion 12 on one side 11 near one end in the longitudinal direction, an overlapping portion 15 on the other side 14, and a window 16 in the vicinity of the overlapping portion Q. Cut 17 in the middle of sides 11 and 14
to form the spring piece 18.

Then, the flat plate member 10 is rolled up so that both sides 11 and 14 face each other, and at this time, the overlapping part 15 is overlapped inside the vicinity of one side 11, and the key 13 is inserted into the window 16. 4 As shown in the figure, press key 1 from one end of 10.
The distance t1 from the side surface A of the window 16 to the side surface A of the window 16 is approximately equal to the distance t2 from one end of the window 16 to the side surface B of the window 16.
Since the total length t4 in the longitudinal direction of the key 13 is only slightly larger than the total length t5 of the key 13, for example, when the flat plate member 10 is rounded and the key 13 is inserted into the window 16 and pressed, the side surface BVc of the window 16 When the inclined surface C of the protrusion 12 comes into contact and the above-mentioned pressing force is F, a component force F2 is generated, so one side 11 shifts in the direction D, and when the shift becomes equal to t3, the key 13 moves into the window 16. When completely inserted, one side 11 abuts the other side 14.

Then, since F2 disappears, one side 11 returns to the opposite direction due to elasticity, and the side surface A of the key 13 and the side surface B of the window 16 abut each other, and the protrusion 12 of the key engages with the inside part of the other side 140 and the overlapping part 15. Therefore, in this state, one side 11 will not be separated from the other side 14.

In addition, the spring piece 18 is bent so that it slightly protrudes inward when the flat plate member is rolled up, and the portions of the spring piece 18 not shown by the dotted lines on both sides are similarly pushed out and doweled. 19 and 19' are formed.

Thus, as shown in FIG. 2, there is a cylindrical portion 20 for receiving the male contact, a holding portion 21 for holding the connector housing, and a connection portion 2 for crimping the core wire of the electric wire.
A female contact with 2 is obtained.

When the male contact 23 is inserted into the cylindrical portion 20 of such a female contact as shown in FIGS. 5 and 6, the spring piece 18 comes into elastic contact with the male contact, thereby establishing an electrical connection between the two. However, in order to facilitate the insertion of the male contact 23 at this time, the tip of the spring piece 18 is rounded and slightly bent outward.

In the female contact having the above-described structure, although the flat plate member 10 is rolled up to form the cylindrical portion 20, the key 13 is inserted into the window 16 and the protrusion 12 engages with the inner portion of the overlapped portion 15. Therefore, even if a prying force is applied to the male contact 23 inserted into the cylindrical portion 20, the seam 24 will not open, and there are dowels 19 and 19'75 on both sides of the spring piece 18. Since it is made up of male contacts 23
When the spring pieces 18 are significantly twisted in a direction that causes the spring pieces 18 to deform, the dowels 19 and 19' receive the male contacts 23 to prevent the spring pieces 18 from being excessively deformed.

The shapes of the spring piece 18 and the holding part 21 are not limited to the illustrated embodiment, and various modifications are possible.
...It may be made into a structure with a solder.

As explained above, the female contact according to the present invention is made from a flat plate member, so it is inexpensive, is strong against prying of the inserted male contact, and has excellent contact performance with the male contact.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a conventional female contact, Fig. 2 is a perspective view of an embodiment of the female contact according to the present invention, Fig. 3 is an exploded view, and Fig. 4 is an exploded perspective view. 5 is a front view of the cylindrical portion of the same embodiment, and FIG. 6 is a V-V of FIG. 5.
FIG. 10...Flat plate member, 11...-side, 1
2...Protrusion, 13...Key, 14.
...Other side, 15...Overlapping part, 16...
...Window, 18...Spring piece, 20...
Cylindrical part, 23...Male contact.

Claims (1)

[Scope of utility model registration request] A projection 12 is provided on one side 11 of the cylindrical portion 20 into which the male contact is inserted.
The other side 14 is provided with an overlapping portion 15 and a window 16 is provided in the vicinity of the overlapping portion. the protrusion 12 is hooked on the edge of the window 16, and a spring piece 18 protruding inward from the cylindrical portion 20 is provided at an intermediate portion between the negative side 11 and the other side 14 of the cylindrical portion 20. Female contacts characterized by: