KRAFTUEBERTRAGUNGSVORRICHTUNG

摘要

A power transmitting apparatus is comprised of an electrically operated motor (26) having a shaft (26a) which is rotatable in one or the other direction, a worm-gear (27) provided at an outer periphery thereof with a geared portion at which an angle of load is established at a set value so as to be larger than an angle of friction and fixedly mounted on the shaft of the motor, a worm-wheel (18) provided at an outer periphery thereof with a geared portion which is in mesh engagement with the geared portion of the worm-gear (27), and a lever (17) operatively connected to the worm-wheel for transmitting the rotational torque therefrom to a driven member. Since an angle of load is set so as to be larger than an angle of friction in the worm-gear, the rotational torque may be transmitted between the worm-gear and the worm-wheel. So, flexibility in mechanical design is increased.