locking and unlocking device of a connector connected to a cable has several conductors, with respect to a base

The connector (1) comprises a card (4) printed circuit, connected to the cable conductors (2). The connector (1) carries a spring (5) of generally U-shaped, the branches (5a) have at their ends means (6) cooperating with complementary means (7) for locking the connector (1) to a base ( 18). The connector (1) comprises a pivoting lever carrying a member (10) cooperating with the base (5b) of the spring (5) of generally U-shaped, this member being movable upon pivoting of the lever between a position in which this member is inactive with respect to the base (5b) of the spring (5) and the arms (5a) of spring (5) are locked to the base (8) and a position in which said member (10) exerts a force on the base (5b) of the spring (5) to unlock the arms (5a) thereof with respect to the base (8).