Electrical connectors – Contact comprising cutter – Having slot edge for cutting
Patent
1995-06-13
1996-10-29
Pirlot, David L.
Electrical connectors
Contact comprising cutter
Having slot edge for cutting
439434, 439751, H01R 424
Patent
active
055690467
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to an electrical connection arrangement of for retention of a connecting wire. Such a connection arrangement has been disclosed by DE 41 40 227 A1 and relates to a device for connecting a cable end, which has been cut off perpendicularly with respect to its longitudinal axis, to a plug or socket element.
The latter has a clamping contact which penetrates the cable from the end side and is secured by means of a sleeve, which can be pushed over the cable end, and a union nut, which presses the cable end against a stop surface, the sleeve being pressed against the outer insulation of the cable.
As a result of its structure, this connection arrangement requires a high production outlay and, in addition, can be used only in the case of a cable whose conductors comprise a wire bundle, with the result that cables having a single wire in each case cannot be connected.
The production of connection arrangements by soldering or welding is also known. In the case of a cable whose conductor is formed by a single wire, this leads to poor production automation if the wire is insulated, since, depending on the type of insulation, thermal or mechanical insulation stripping is required, and the wire end also has to be tin-coated in the case of soldering.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide an electrical connection arrangement which avoids the disadvantages of the prior art.
In keeping with these objects and with others which will become apparent hereinafter, one feature of the present invention resides, briefly stated, in an electrical connection arrangement having a receptacle for retention of a connecting wire and having a contact element for connection of the connecting wire and for the detachable coupling to a mating plug, wherein the connecting wire is arranged in form of a winding with a plurality of turns in a manner such that it can be brought to bear against the receptacle, the contact element with at least one cutting edge extending in a longitudinal direction of the winding, the cutting edge and the winding delimitation opposite the latter are inclined with respect to one another in the longitudinal direction of the winding due to the receptacle, and in the event of a plugging movement of the contact element onto or into the receptacle, the cutting edges enter into a cutting connection with at least one of the turns of the connecting wire which is radially supported on the delimitation.
In accordance with one new feature of the present invention, the contact element is formed as a flat-pin plug having two limbs with inner sides provided with cutting edges in a contact section, and the cutting edges are inclined with respect to the longitudinal axis of the contact element.
In accordance with another novel feature of the present invention, the receptacle is formed as a conical hole and the contact element is formed as a circular plug with a contact section having a cross-sectional area of a polygon wherein the cutting edges extend parallel to the longitudinal axis of the contact element.
When the electrical connection arrangement is designed in accordance with the present invention, it has the advantage that it is possible to make contact, with the capability of satisfactory automation, between, above all, relatively thin wires whose inherent stability is insufficient to resist deformation of their cross section.
For this purpose, the connection arrangement has a receptacle for a connecting wire and a contact element, it being possible to assemble these to an end position by a simple plugging movement which can be readily automated. In this case, the connecting wire is cut at least in partial regions by the contact element, with the formation of a cutting connection, and makes reliable contact with said contact element.
The novel features which are considered as characteristic for the invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and i
REFERENCES:
patent: 3071750 (1963-01-01), Heselwood
patent: 5030134 (1991-07-01), Plosser
Biggi Brian J.
Pirlot David L.
Robert & Bosch GmbH
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