Abstract: A locking element or latch is embodied from a metal plate and comprises a first pair of articulation tabs, a second pair of tabs to receive strains, these tabs being received in corresponding openings formed in the flanges of the base. The retaining member of the latch is guided in displacement in an L-shaped cutout and is associated with a floating contact with a rocker articulated on an ejector. A push button comprises engagement surfaces cooperating selectively with the locking member and ejector and ramps to assist the lifting of the latch. A single spring serves to actuate, and place under tension, all of the moving parts of the buckle.

Abstract: A safety belt buckle including a latch for engagement with an opening in a tongue, an ejection spring for the tongue and a bias spring for a push button that can be brought into engagement with the latch, wherein the latch can pivot on an axis approximately perpendicular to the direction of insertion of the tongue, the latch being biased in the unlocked position by the force of the bias spring, and when the bias spring is at least partially extended, the latch is maintained in locking engagement with the tongue by a reinforcing member that moves together with the push button.