SELF-SERVOING DISC BRAKE ROTOR

摘要

PURPOSE: A self-servoing disc brake rotor is provided to obtain a passive brake component capable of providing a supplemental brake clamping force to current brake input forces to provide an increased brake torque. CONSTITUTION: A self-servoing disc brake assembly(10) comprises a driven rotor member(11), a movable rotor member(14), a plurality of balls(24), and a friction member. The driven rotor member includes a first inner face(18) with a plurality of first pockets, and a first friction surface(16) spaced from the first inner surface. The movable rotor member is supported on the driven rotor member and movable relative to the driven rotor member between non-servoed and servoed positions. The friction surfaces are spaced by a first distance in the non-servoed position and the friction surfaces are spaced by a second distance greater than the first distance in the servoed position. The movable rotor member includes a second inner face(20) with a plurality of second pockets adjacent to the first inner face and a second friction surface(22) spaced from the second inner face. The balls are interposed between the first and second pockets with at least one of the first and second pockets which are ramped. The friction member is arranged adjacent to the first friction surface and moveable between engaged and non-engaged positions. The friction member is spaced from the second friction surface in the non-engaged position and arranged in contact with the second friction surface in the engaged position so as to rotate the movable rotor member to the servoed position and produce an additional brake clamping force.