Electrical coupling device

Details Electrical coupling device Electrical coupling device

1988-11-28

1991-07-16

Desmond, Eugene F.

Electrical connectors

With coupling movement-actuating means or retaining means in...

Including movement of coupling part about axis

439372, 439680, H01R 13629

Patent

active

050320874

DESCRIPTION:

BRIEF SUMMARY
DESCRIPTION OF THE INVENTION

The invention relates to an electrical coupling device with a blade rail rigidly arranged, for example on an appliance frame, and a socket rail accommodated in a casing, as well as with means for preventing wrong coupling.
In multi-pole electrical coupling devices, the plugging operations of the blade pins and socket bodies require the latter elements to be in an exactly aligned association with one another, as well as relatively high expenditure in terms of force. Furthermore, if such plugging is insufficiently deep, maintenance of the plug connection is not safely assured.
The problem of the invention is to make the plugging process and support of the plug connection easier and safer.
According to the invention, the casing of the socket rail is, for said purpose, adapted for suspension on the frame of the device by means of a jointed peg arranged at one end of the frame, and has a coulisse groove in at least one lateral longitudinal wall, for and coupling the contacts of the blade and socket rails, such casing of the socket rail is adapted for swinging against the blade rail and locking by displacing a coulisse block in the coulisse groove, such coulisse block being supported by a lever articulated on the frame of the device. According to the preferred embodiment of the invention, provision is made that the casing of the socket rail has in both lateral longitudinal walls a coulisse groove, such grooves having idential curves, and that two coulisse blocks, each block being supported by a lever, are simultaneously and synchronously guidable in the two coulisse grooves, one block in each groove. Usefully, the levers are embodied in the form of twin levers with lever arms of different length, whereby the short lever arms of such twin levers support the coulisse blocks. Furthermore, for the purpose of actuating the two twin levers simultaneously and uniformly, the free ends of the long lever arms of the two levers are rigidly connected with one another by a bridge. Now the plugging operations of the blade and socket rails can be effected by simply swinging the socket rail casing, the latter being suspended on the frame of the device by means of the jointed peg, against the blade rail by swinging the levers, whereby the required expenditure of force is low as a result of and in accordance with the lever arm ratios. Locking is accomplished by an excess stroke for the levers, the handling of which is facilitated by the bridge. In addition, provision is made that the levers are disengagable both in the position for holding the socket rail casing and in the position for releasing the latter, and lockable on the frame of the device and/or casing of the socket rail. For the purpose of such arresting, cams or moldings on the frame of the device, or on the casing of the socket rail may be used, which cams or moldings project into the path of movement of the levers and, by running over the latter, arrest such levers.
Finally, measures for plugging predetermined socket rails with blade rails are realizable in that, by way of example, the lateral walls of the socket rail casing have a plurality of recesses arranged axially one after the other, such recesses being adapted to become active with the help of coding pins rigidly arranged on the frame of the device. In order to avoid interference with the swinging motions of the socket rail casing, such recesses are, usefully, limited by circular segments having their common center disposed in the jointed pegs.
Furthermore, for the purpose of facilitating the entry or introduction of the coulisse blocks in the coulisse grooves, the latter have, at the entry end, a coulisse groove segment that is conically tapered in the direction of entry, with such tapered segment being joined by coulisse groove parts extending transversely in each case. The conical part of the coulisse groove permits an automatic alignment of the socket rail casing, whereas the transversely extending parts of the coulisse groove permit the lifting of the socket rail casing in th

REFERENCES:
patent: 3668605 (1972-06-01), Albert

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