Plug contact device intended for mounting on circuit cards

Claim 1

A plug contact device comprising: a body of insulating material, said body being provided with a plurality of elongated parallel grooves and ridges between the grooves, a pair of projections transversely extending from said ridges and straddling and protruding into each groove at an intermediate point along the groove, said projections having a given length along the axial direction of the groove, and a given thickness in the transverse direction, the edge at one end of each projection being provided with a slot extending along the projection in the axial direction of the groove and from the base of the groove a given height upward from said base, the edge at the other end of each projection having a lock shoulder extending from said ridges and protruding into each groove for a distance substantially equal to said given thickness, the distance along the axial direction of the groove from the base of the slot to the end of the lock shoulder being substantially equal to said given length; and a plurality of contact springs of conductive material each of said contact springs being positioned in one of said parallel grooves, each of said contact springs having a thickness less than the height of the slot in said projection, each of said contact springs being provided with a pair of axially extending notches for mating engagement by said projections, the depth of said notches being substantially equal to the thickness of the projections and the length of said notches being substantially equal to said given length along the axial direction of the grooves, whereby said contact springs are lockingly held against axial movement by one edge of the contact spring at a notch resting against the base of the slot in a projection and an opposite edge of the contact spring at the same notch abutting the locking shoulder of the same projection.