Plug connector for IC modules

Claim 1

A plug connector for IC modules, comprising (a) an insulating connector body (4); (c) a plurality of female contacts (22), which are provided in the connector body (4) in an arrangement corresponding to the plurality of contact tabs of an IC module (30) and each of which comprises an end portion which constitutes a soldering tab and extends through the connector body (4), and upper end portions (24), which constitute spring and contact elements; (c) clamping means (6), which comprise at least two clamping plates (16, 18) provided with a pivotal connection, which extends in the longitudinal direction of said clamping means, which clamping plates have outer edges (90, 92) which engage the spring and contact elements (24), wherein the clamping plates (16, 18) in a release position are upwardly inclined from the top surface (14) of the connector body (4) in a cable-like configuration, and in a clamping position the clamping plates define a plane that is parallel to the bottom surface (8) of the connector body (4) and the spring elements (24) are adapted to be forced against the longitudinal side faces of the contact tabs (28) of the IC module (30); (d) stop means (24) for limiting the opening movement of the clamping plates (16, 18) to a gablelike configuration assumed in the release position; and, (e) a bearing surface, which is formed on the top surface (14) of the connector body and which is engaged by at least part of the surface of the clamping plates (16, 18) when they are in at least one position which differs from the release position, of the clamping plates; (f) wherein the clamping means (6) are movable beyond the clamping position to a locking position, in which the clamping plates (16, 18) are downwardly inclined toward each other and toward the top surface (14) of the connector body (4) and at least a portion of the bottom surfaces (86, 88) of said clamping plates (16, 18) are in contact with said top surface (14), wherein the improvement comprises: (g) each of the clamping plates (16, 18) has adjacent to their common pivotal connection top edges (60, 98) and a chamfer (62) which extends in the longitudinal direction of the clamping plate and is so arranged that when the clamping means (6) are in their release position the chamfer (62) defines a first bearing line and the edge (60) constitutes a second bearing line and both bearing lines are parallel to the plane of the female contacts (22) and define a bearing plate (64).