Drive mechanism drum brake control Crib, and drum brake comprising such a mechanism.

摘要

The invention is a drive mechanism DRUM BRAKE CONTROL wedge (20), comprising uncuerpo (16) fixes two pistons (14,15) OPUESTOS ADAPTED in the body (16) and cooperating with ends (9, 10) versus two SEGMENTS (2,3), a wedge (20) movable in the body in a direction (22) transverse to the axis of the pistons and having two inclined surfaces (27,28) cooperating with the pistons ( 14,15). It characterized in that the wedge has, between the inclined surfaces (27,28) two extensions (29,30) OF SIDES PARALLEL (31.32) and perpendicular to the axis of pistons, and that the body (16) HAS TWO SLOTS GUIDE (33,34) perpendicular to the axis of the pistons, two extensions (29,30) are adapted in said guide grooves.