Torque limiter and automatic open close unit for toilet seat and seat cover using the same

摘要

The present invention provides a torque limiter with an easy maintenance feature. It is capable of alignment and bidirectional rotation. The present invention overcomes the problems of torque limiters of conventional technology by providing a torque limiter comprising an inner ring and an outer ring wherein when a torque is applied to an input member, which is inner ring or outer ring, is less than a set torque, the inner ring and the outer ring move in response to each other. Stopper grooves are provided on inner ring or outer ring and a flat spring is provided on inner ring or outer ring such that it pushes roller pins against stopper grooves; wherein when the torque applied to roller pins exceeds a set torque, roller pins cause flat spring to elastically deform such that roller pins come out of stopper grooves. Inner ring and outer ring are thus uncoupled.