Safety belt buckle

In a safety belt buckle for attaching a portion of a safety belt to retaining means through a tongue member constituting a latch, said buckle comprising a case, a support for fixing to the retaining means and disposed in the case, the support having two spaced-apart walls, locking means for the latch, the locking means being disposed between said walls, articulation means mounting the locking means on said walls of the support so that the locking means are pivotable on said walls of the support about an axis, stop means movably mounted on the support, the locking means defining a first abutment surface cooperative with the latch to retain the latch in a locked position, the locking means defining a second abutment surface adapted to bear against the stop means, a control knob cooperative with the stop means for withdrawing the stop means and releasing the locking means, the support defining a complementary abutment surface, the locking means defining a third abutment surface adapted to be applied, in a locked position of the buckle, against said complementary abutment surface when a tensile force exceeding a predetermined value is exerted on the latch in a direction for extracting the latch;

• the improvement wherein said locking means define a predetermined space therebetween and each of said walls of the support, said articulation means project from opposite sides of the locking means and extend through said spaces and into said walls of the support whereby a force for shifting the locking means relative to said walls of the support in a direction perpendicular to said axis would elastically deform said articulation means on opposite sides of the locking means, spacer means being provided for maintaining said spaces between the locking means and said walls of the support so that, when said tensile force is exerted, PG,18 said third abutment surface and said complementary abutment surface come in contact with each other by elastic deformation of said articulation means.