Flat-contact plug socket

Details Flat-contact plug socket Flat-contact plug socket

1992-06-25

1994-02-22

Pirlot, David L.

Electrical connectors

Metallic connector or contact having movable or resilient...

Spring actuated or resilient securing part

439851, H01R 448

Patent

active

052882527

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

1. Field of the Invention
The invention relates to a flat-contact plug socket with two contact arms arranged on the body of the socket. These arms are bent back at the free end and, within the spacing of the free end, rest against each other across part of their length with resilient elasticity, as well as with outer springs supported on the contact arms.
2. The Prior Art
It is known that plug socket casings are mechanically equipped with flat-contact plug sockets. The problem arising in the course of the connecting operation is that the free ends of the flat-contact plug sockets often get hooked onto areas of the casing, causing an unfavorable result when using this device. In addition, it has been found that the probability of getting hooked increases as the sizes of plug socket casings and plug sockets become smaller. In particular, however, such getting hooked by the flat-contact plug sockets occurs as the latter are being inserted into plug socket casings when outer springs are associated with the contact arms of the flat-contact plug sockets.


SUMMARY OF THE INVENTION

It is an object of the present invention to provide for measures which safely permit a trouble-free insertion of small-sized flat-contact plug sockets in plug socket casings.
According to the present invention, this object is achieved in that the body of the socket is rigidly embraced by the outer spring body; that on diameter wall segments, the outer spring body has an arm part extending in each case over the flat sides of the contact arms inclined relative to the free ends and against each other. The free ends of the arm parts are partially bent lengthwise, back over the free ends of the contact arms against one another and in the plugging direction, and pressingly resting against the free ends of the arm parts. In this way, guide surfaces are formed by the arm parts for slidingly guiding the contact arms along surfaces of the casing, whereby the sliding effect of the arm parts is supported by the bend ends.
In one embodiment of the flat-contact plug socket, the outer spring body and the arm parts can be formed as one piece. The outer spring body and the arm parts are preferably cut from one piece of sheet metal and have to be straightened out by bending and/or folding. Usefully, the arm parts have a slightly lesser width than the width of the contact arms, and slit lengthwise at least approximately up to the outer spring body for enhancing the elasticity property within the spacing of the free ends.
In another embodiment of the flat-contact plug socket, provision is made for fixing the outer spring body on the socket body by inwardly bending clips over marginal strips of recesses formed in the socket body. It is understood that the outer spring body can be connected with the socket body also in any other desired way. For example, it is possible to secure the outer spring body and the socket body on one another by welding or soldering.
In yet another embodiment of the flat-contact plug socket, provision is made for providing the outer spring body and the socket body with coaxial recesses for having a locking tongue gripping through such recesses. This locking tongue is arranged with resilient elasticity on the casing of the plug socket. In this way, the outer spring body supports the displacement-free attaching of the flat-contact plug socket in the plug socket casing.
Finally, a method is provided for the manufacture of the outer spring in that the outer spring body and the two arm parts are cut from one plane piece of sheet metal on and jointly with a transport strip with spacing holes, leaving a link with said transport strip that the outer spring body and the arm parts are subsequently folded or bent and the transport strip is wound into a coil; and that for applying the outer spring to the socket body, it is separated from the transport strip within the zone of the bend .


BRIEF DESCRIPTION OF THE DRAWINGS

The invention is explained in greater detail by reference to an exemplified embodiment shown

REFERENCES:
patent: 4540235 (1985-09-01), Lolic
patent: 5007865 (1991-04-01), Jackobeit

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