Patent ID: 7458136

Claim:
A seatbelt buckle of the type for releasably engaging an insert tongue, the seatbelt buckle comprising, a housing, a slide button which slides in the housing and is for releasing the seatbelt buckle from a locked position, and an inertial mass which moves relative to the slide button in the direction of motion of the slide button and is coupled to the slide button by a two-arm coupling lever mounted in the housing, the two arm coupling lever including two arms, wherein the inertial mass is mounted and guided on a guide disposed on at least one of the slide button and the housing, the slide button includes a catch which is spaced apart from the guide and opposite a bearing axis of the two-arm coupling lever, the bearing axis being fixed to the housing, wherein the two arms of the coupling lever directly engage the inertial mass and the catch of the slide button so as to make the seatbelt buckle shockproof.