CLUTCHED DRIVEN DEVICE AND ASSOCIATED CLUTCH MECHANISM

摘要

A driven accessory (10) is provided that includes a first rotary clutch portion (50), a second rotary clutch portion (52), a wrap spring (56) and an actuator (60). The wrap spring (56) is configured to transmit rotary power between the first and second rotary clutch portions (50, 52). The actuator (60) is selectively operable for generating a drag force that is applied to the wrap spring (56) to control torque transmission through the wrap spring (56). The actuator (60) includes an actuator input member (140), a brake shoe (144) and a motor (142) that is configured to translate the brake shoe (144) axially along the rotary axis (70). The drag force is generated when the motor (142) is operated in a first mode so that transmission of rotary power between the first rotary clutch portion (50) and the second rotary clutch portion (52) is interrupted.