Geometrical instruments
Patent
1981-01-25
1982-09-21
McGlynn, Joseph H.
Geometrical instruments
H01R 1120
Patent
active
043504051
DESCRIPTION:
BRIEF SUMMARY
SUMMARY OF THE INVENTION
The invention provides a connector for self-stripping insulated electric conductors, said connector including a fork or clip type conductive connection part with at least two resilient arms between which is provided a slot for inserting the electric conductor to be connected, the connection part being designed for insertion in a cavity in a stand made of insulating material, characterized in that the double fork type connection has two inclined slots whose axes converge towards the top of the connector.
In accordance with the invention, the connection part includes at least one very protruding boss on the inner edge of one of the arms of the connection part. The boss is located between the end and the opening of the slot and being intended firstly to calibrate the opening of the slot and secondly to hold the conductor in the slot after it has been installed therein. The boss is formed by snarling, coining, swaging or like means performed near the edge of said slot but at some distance from said edge so as not to reduce the thickness of the part at its edge.
In accordance with the invention, the connection part middle arm has a hole, in which a stud on the support fits, to hold the middle arm motionless when a conductor is inserted in one of the slots of the connection part.
In accordance with the invention, a connection part provided with two contact arms which press in opposite directions to the arms of the fork includes a bridge portion which connects the two connection part arms together so as to prevent the ends of the contact arms from moving when a conductor is inserted in the fork.
The figures of the accompanying drawings illustrate several embodiments of a connector in accordance with the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an exploded, perspective view of a fork type connector separated and its support.
FIG. 2 is an elevation which shows a connector with a double fork recessed in its support.
FIG. 3 is an elevation which shows another embodiment of a connector in its support.
FIG. 4 is a detailed cross-section view along line IV--IV of FIG. 3.
FIG. 5 is an elevation which shows another embodiment of a connector.
FIG. 6 is an elevational view of a multiple connector with a double fork on one side and a single fork on the other side.
FIG. 7 is an elevational view of a connector with a double fork on one side and resilient contact arms on the other side.
DESCRIPTION OF PREFERRED EMBODIMENTS
The forked connection part illustrated in the figures is made from a springy metal substance in accordance with a known manufacturing process.
It is constituted by three arms: a left side arm 1, a middle arm 2 and a right side arm 3.
V-shaped slots are provided between the arms: a left slot 4 and a right slot 5 whose openings 6 and 7 have strictly identical dimensions and are adapted to the diameters of the conductors.
One after another, the conductors are driven into their respective slots up to the required distance from the inlet orifices.
A conductor 8 is pushed into the slot 5 (as shown in FIG. 2). As the conductor moves, the resilient arms 2 and 3 are progressively pushed apart. This increases the width of the opening 7 and also more especially would reduce the width of the opening 6 if the central arm were not held straight.
Such reduction in the width of the opening 6 is undesirable since a conductor could then not be inserted in its slot 4 in the same conditions as the conductor 8 in the slot 5. In particular, the effort needed to insert the conductor would be greater and exerting such an effort could break the conductor.
One particularity of the present invention is that it remedies this kind of drawback.
An insulating support 10 for a connection fork 12 has a recess 11 within which a rigid stud 13 projects from support 10, designed to fit into a hole 14 provided in the middle arm 2 of the connection fork. In these conditions, inserting the conductor 8 in the slot 5 progressively moves the right arm 3 away from the middle arm 2 in the direction of the ar
REFERENCES:
patent: 2694189 (1954-11-01), Wirsching
patent: 3027536 (1962-03-01), Pasternak
patent: 3761866 (1973-09-01), Sedlacek
patent: 4002391 (1977-01-01), Dunn
patent: 4085994 (1978-04-01), Volinski
patent: 4106837 (1978-08-01), Paluch
patent: 4118095 (1978-10-01), Berglund et al.
Pochet Roger
Yapoudjian Claude
Brown John S.
McGlynn Joseph H.
Societe Anonyme dite: MARS-ACTEL
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