DISK BRAKE COMPRISING A PARKING BRAKE HAVING ENHANCED HYDRAULIC ACTUATION

摘要

The invention relates to a brake that comprises a brake caliper (12), a main piston (16), and a piston rod (100) that is axially movable with the main piston (16), in relation to the housing (14), characterized in that said brake comprises: a secondary hydraulic cavity; and a secondary piston (82) that is slidably mounted into the secondary hydraulic cavity in which said secondary piston defines, axially toward the front, a secondary hydraulic chamber (24S) and is capable of engaging with the piston rod (120) such as to exert a secondary axial thrust force (SBF) on same, from the rear to the front, when the secondary hydraulic chamber (24S) is supplied with pressurized fluid.