Patent ID: 6364085
Filing Date: 2002-04-02
Classification: B60T,F16D

Abstract:
An actuator having an output shaft for driving a load, comprising:a driving motor for driving and operating said output shaft; and a slipping prevention unit which prevents a slipping of said output shaft due to an external force from a load side, wherein said slipping prevention unit includes: a rotation member rotating with a rotation of said driving motor, said rotation member being a reduction gear through which an output of said driving motor is reduced and is transmitted to said output shaft, a rotation regulation unit having an engagement portion engaging with said rotation member, said engagement portion having a contact surface in a rotation direction for contacting said rotation member, and a switching unit which electrically switches operation of said rotation regulation unit between an engagement state where said engagement portion of said rotation regulation unit engages with said rotation member, and a non-engagement state where said engagement portion is disengaged with said rotation member; and said rotation regulation unit is disposed so that at least one side rotation of said rotation member is prevented in said engagement state.