WIPER MOTOR DRIVE SYSTEM HAVING BREAKAWAY CLUTCH

摘要

The present invention relates to a wiper motor drive system that includes a motor, an output shaft operatively connected to a wiper blade, and a breakaway clutch operatively connected between the motor and output shaft. The breakaway clutch includes a torque-sensitive releasable locking mechanism having a first position wherein torque is translated from the motor to the output shaft through the breakaway clutch to drive the wiper blade across a surface to be wiped, and a second position wherein torque is interrupted between the motor and the output shaft in response to a predetermined rotational torque differential acting on the output shaft, with the locking mechanism being movable back to the first position when the differential torque is reduced on the output shaft.

主权项

1. A wiper motor drive system comprising:
A motor, an output shaft operatively connected to a wiper blade, and a breakaway clutch operatively connected between said motor and said output shaft; said breakaway clutch including a torque-sensitive releasable locking mechanism having a first position wherein torque is translated from said motor to said output shaft through said breakaway clutch to drive the wiper blade across a surface to be wiped, and a second position wherein torque is interrupted between said motor and said output shaft in response to a predetermined rotational torque differential acting on said output shaft, said locking mechanism being movable back to said first position when said differential torque is reduced on said output shaft.