Patent ID: 9732813
Date: 2017-08-15
CPC Classifications: F16D

Claim:
1. An electrically actuated brake assembly comprising: a brake disc in rotational engagement with a wheel of a vehicle; a brake pad which frictionally engages said brake disc when at least one of a service brake actuator force and a parking brake actuator force is applied thereto; an electric motor having an output shaft rotatable in both a forward direction and a reverse direction; a service brake transmission in operative rotational communication with the output shaft of said electric motor, said service brake transmission causing said brake pad to move toward said brake disc and exert the service brake actuator force thereon when the output shaft is rotated in the forward direction and causing said brake pad to move away from said brake disc and remove the service brake actuator force therefrom when the output shaft is rotated in the reverse direction; at least one adjuster mechanism, said adjuster mechanism being rotatable in one direction to decrease a distance between said brake pad and said brake disc and in another direction to increase the distance between said brake pad and said brake disc in order to control clearance between said brake pad and said brake disc; and an adjuster transmission comprising an electrically actuated clutch operatively connected between the output shaft of said electric motor and said adjuster mechanism, said adjuster transmission causing operative rotational communication between the output shaft of said electric motor and said adjuster mechanism when said adjuster transmission is engaged so as to transmit rotational movement of the output shaft of said electric motor to said adjuster mechanism, and causing there to be no operative rotational communication between the output shaft of said electric motor and said adjuster mechanism when said adjuster transmission is disengaged so as to not transmit rotational movement of the output shaft of said electric motor to said adjuster mechanism; wherein said at least one adjuster mechanism is rotated to an extent to apply the parking brake actuator force, and wherein said adjuster transmission is engaged when the parking brake actuator force is applied in order to prevent said at least one adjuster mechanism from rotating such that said adjuster transmission is employed as a park lock.