Gripping mechanism, assembly apparatus and component

A gripping mechanism comprising:

• a roller;
• and
• a frame that houses the roller, wherein
• the gripping mechanism grips an object between an outer surface of the roller and an inner surface of the frame through action of gravity acting on the roller,
• the roller includes a plurality of rotors connected in series and a restricting section,
• each of the rotors includes a projection at one of ends on a center line thereof and a recess at another one of the ends on the center line thereof,
• the projection of one rotor of the rotors is inserted in the recess of another rotor of the rotors that is adjacent to the one rotor,
• the restricting section prevents the projection from coming out of the recess, and
• the restricting section supports the rotors to allow the center lines of rotors, of the rotors, located at respective opposite ends of the series to incline relative to the center line of a rotor, of the rotors, located in middle.