US Patent 11578521 Opening and closing body drive mechanism

An opening and closing body drive mechanism that drives an opening and closing body between an open position and a closed position; a drive unit to drive the opening and closing body; a detecting unit to detect movement of the opening and closing body; and a control unit to control driving of the opening and closing body. The control unit carries out a feedback control to control driving of the opening and closing body such that the movement of the opening and closing body, detected with the detecting unit, matches a predetermined target value when no abnormality occurs in the detecting unit or in wiring connecting the detecting unit and the control unit.