Drive apparatus for opening/closing an operation member

A drive apparatus for opening and closing an operation member in a reciprocable motion, comprising:

• a power transmission cable comprised of a wire rope and a spiral tooth-like rib formed on an outer periphery of the rope, the cable including one end and another end being and a flexible intermediate portion between both ends, the one end connected to the operation member;
• a guide roller around which the intermediate portion of the cable is wrapped in a curved fashion;
• a guide base having a roller support shaft to rotatably support the guide roller and a curved guide section covering the intermediate portion of the cable to provide a curved channel relative to the guide roller to allow the cable to pass through the curved channel;
• and
• a cable drive means having an engaging member engaging with the spiral tooth-like rib and a rotation member rotating the engaging member, to move the cable in an axial direction to move the operation member in a reciprocating motion so that the operation member is opened and closed.