JPH0152869B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a socket connector in which a contact portion that fits into a pin contact is composed of two contact springs facing each other, and a locking protrusion is provided at the tips of the two contact springs. , relates to a socket connector characterized in that when a pin contact is inserted, the spring pieces are separated and the locking protrusion engages with a locking hole provided in the housing.

Conventionally, a connector as shown in FIG. 1 is generally used to connect a printed circuit board and an electric wire, and a socket contact as shown in FIG. 2 is often used. This contact 1 is connected to the housing 2.
As a method of locking, the bottom of a U-shaped contact portion formed by two opposing contact springs 3 is punched out to provide a cantilever locking spring 4, and a groove provided in the housing 2 is used. It was locked at 5. However, when the electric wire is strongly pulled, there is a possibility that the contact may fall off with only one location of the locking spring 4.

This invention was made with the aim of improving the above-mentioned drawbacks of conventional contact locking, and particularly improves the locking force and reliability when mated with a pin connector. It is something that

Hereinafter, one embodiment of the invention will be described based on the drawings.

FIG. 1 shows a contact 11 of the present invention, in addition to a conventional locking spring 14, a pin contact 10 (see FIG. 6) at the tip of two contact springs 13 facing each other.
It has a pair of locking protrusions 16 that protrude outward from the guide hole 20 side. FIG. 4 shows a housing 12 of the present invention, in which a projection locking hole 17 into which the locking projection 16 locks is bored. This hole is a square hole located approximately midway above the two pin contact guide holes 20, and is internally continuous with the insertion hole 18, so that when the socket contact 11 is installed in the insertion hole 18, the bottom wall 171 of the locking hole 17 is the surface that the locking protrusion engages with. Reference numeral 15 denotes a locking groove into which a locking spring engages.
5A is a partial sectional view of the socket connector when the socket contact 11 is inserted into the housing 12, FIG. 5B is a sectional view taken along the line 5A-A', and FIG. 5C is a sectional view taken along the line 5A. It is a BB' sectional view of . Each figure shows the state of engagement between the locking protrusion 16 and the protrusion locking hole 17, and the housing 12 is cut away from the front, side, and top surfaces of each, and the pin contact 10 is inserted in this way. In the non-locking state, the locking force by the conventional locking spring 14 is usually sufficient, so the locking protrusion 16 does not necessarily need to be in the locked state. FIG. 6A is a vertical cross-sectional view of the pin contact 10 fitted into the socket contact 11, and FIG. 6B is a cross-section taken along line C-C' in FIG. 6A for locking when the pin contact is fitted. It shows the state of engagement between the protrusion 16 and the protrusion locking hole 17. By inserting the pin contact 10, the contact spring 13 is expanded, and the locking protrusions 16 at each tip thereof are also expanded outward and away from each other, and are securely engaged with the bottom wall 171 of the protrusion locking hole 17 of the housing 12. It will match. That is, in the fitted state, the locking spring 14
engages with the locking groove 15 of the housing 12, and the pair of locking protrusions 16 provided on the contact spring engages with the protrusion locking hole 17, making the engagement extremely reliable.

As described above, in addition to the conventional locking spring, the socket connector of the present invention is provided with a pair of locking protrusions at the tip of the contact spring, and is adapted to engage with the protrusion locking hole of the housing when the connector is mated. Therefore, even if a strong tensile force is applied to a crimped wire, etc., a stable locking state is maintained and the contact is prevented from falling off, which is highly effective in improving reliability.

Note that the present invention is not limited to the above-mentioned embodiments,
Needless to say, it includes various things based on similar technical ideas.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a configuration in which a printed circuit board and electric wires are connected via a connector. FIG. 2 is a perspective view of a conventional socket contact. FIG. 3 is a perspective view of a contact used in the connector of the present invention. FIG. 4 is a perspective sectional view of a housing used in the connector of the present invention. FIG. 5A is a partial cross-sectional view of this connector as seen from the pin insertion side. FIG. 5B is a sectional view taken along line A-A' in FIG. 5A. FIG. 5C is a sectional view taken along line BB' in FIG. 5A. 6th
Figure A is a cross-sectional view of the housing showing how it is fitted with the pin connector. Figure 6B is C- of Figure 6A.
It is a C′ cross-sectional view. 1, 11... socket contact, 2, 12...
...Housing, 3, 13...Contact spring, 4, 14
... Locking spring, 5, 15 ... Locking spring groove, 16
...Latching protrusion, 17...Protrusion locking hole, 171...
... Locking surface of locking hole, 18 ... Socket contact insertion hole, 10 ... Pin contact, 20 ... Pin contact guide hole.

Claims (1)

[Claims] 1. A socket contact in which locking protrusions projecting outward are provided on the free end sides of a pair of contact springs that stand up from the cut-and-raised bottom portion of the locking springs and extend opposite to each other; It consists of a housing that accommodates the socket contact in the socket contact insertion hole, and the housing includes a locking spring groove that locks the locking spring, and a hole for receiving the locking protrusion and inserting the mating pin contact. A socket connector characterized in that a protrusion locking hole having a locking surface that contacts the locking protrusion in a direction parallel to the socket contact insertion hole is provided continuously to the socket contact insertion hole.