Electrical connectors – Metallic connector or contact having movable or resilient... – Spring actuated or resilient securing part
Patent
1996-11-22
1999-06-29
Stephan, Steven L.
Electrical connectors
Metallic connector or contact having movable or resilient...
Spring actuated or resilient securing part
H01R 1315
Patent
active
059160020
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a connecting system for electric conductors, in particular insulated cables which are to be connected to electrical equipment, which has the features of the preamble of claim 1.
A connecting system of this type has already been disclosed in U.S. Pat. No. 4,431,256. This connecting system has the disadvantage of relatively high production costs for the socket, which is constructed in the form of a slotted sleeve. There are also deficiencies in making contact securely after a large number of separations and connections.
In a known connecting system, shown in EP 0 352 967 A1, of a similar type, the current carrying capacity is deficient to the extent that the requirements which are placed on connections in mobile use, in particular in the case of the connection of cables to the, components of an electric drive for vehicles, are not fulfilled.
It is the object of the invention to provide a connecting system which is improved by comparison with these known systems and which not only is capable of transmitting high currents reliably over long periods, but can also, moreover, be produced in a cost-effective fashion. This object is achieved by means of a connecting system having the features of claim 1.
Thanks to the arrangement of a spring which is applied to the socket in the region of the tongues thereof, a line contact is ensured between the tongues and the pin to be contacted, even in the case of a socket which is formed from a stamped board having cut-out tongues. In addition to a high current carrying capacity, the solution according to the invention has the advantage of being able, by contrast with plug-and-socket connections having laminated contact elements, to compensate even large dimensional tolerances without impairing the current carrying capacity. Reliable contact-making is ensured even after a large number of separations and connections. Moreover, the production costs are extremely low because of the production of the socket with its tongues from a board, which is rolled to form a hollow cylinder after the processing, that is to say the stamping free of the tongues and the shaping thereof.
The use of a spring to increase the contact pressure in the case of an electrical connecting system is already known per se from FR-A-821 722. However, this concerns the arrangement of the spring on a socket which is constructed to be relatively solid and whose lateral surface is subdivided into contact arms by milled-in longitudinal slots.
It is preferred for there to be, integrally formed on the tongues, projections which overhang outwards and which secure against axial displacement the spring which grips the socket in the region of the tongues. This measure also contributes to keeping the costs of the contact system very low.
In a preferred embodiment, the socket is arranged in a first, and a pin is arranged in a second electrically insulating housing in a fashion safe from touch, and these two housings are plugged into one another when the plug-and-socket connection is produced. In the state in which they are plugged into one another, the two rigid housings mutually support each other, as a result of which forces acting from outside on the plug-and-socket connection are kept away from the contact system. Since, as a rule, the contact system has to be protected not only against external force influences, but also against other influences, the two housings are advantageously connected to one another in a fluid-tight fashion in the state in which they are plugged into one another. Moreover, in the case of relatively high operating voltages it is expedient also to provide an electrically tight connection between the two housings which are plugged into one another. It is then possible even with relatively small dimensions to render the connecting system usable for relatively high voltages. For example, operating voltages of up to 6 kV can be realized without difficulty. This holds, above all, when the housing containing the socket is constructed over virtually the entire length of the hou
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Deister Paul F.
Gottschalk Klaus
Keller Hans-Joachim
Moser Bernd
Sobieray Gunther
Byrd Eugene G.
Karl Pfister Elektrorechnische Spezialartikel GmbH & Co. KG
Stephan Steven L.
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