Clutch, for electric actuator of car doors, has hub with boring, receiving motor shaft, and blocking mechanisms involving leaf springs resting against motor shaft and generating frictional torque between motor shaft and hub

摘要

Clutch (10) comprises hub (11) having boring (13) able to receive motor shaft, and having blocking mechanisms. Blocking mechanisms are leaf springs (15a, 15b) resting against motor shaft so as to generate frictional torque, between motor shaft and hub, which is at least equal to maximum motor torque. During normal running, hub is driven in rotation by friction on motor shaft. When motor shaft is blocked, or receives torque higher than frictional torque (during dynamic shocks), motor shaft is able to revolve w.r.t. hub.