Patent ID: 8648510

Claim:
An actuator cover structure, comprising: a conversion mechanism that converts input energy to mechanical motion; and a case that houses the conversion mechanism, and that has a metal cover fastening portion and a cover member to which an insert nut that is fastened to the cover fastening portion is integrally attached, wherein the cover member is formed by a metal cover portion and a resin cover portion; and the metal cover portion has a continuously flat disc-shaped center portion that covers part of the conversion mechanism, a cylindrical inner peripheral wall portion having a first axial length, a cylindrical outer peripheral wall portion having a second axial length that is longer than the first axial length, wherein the continuously flat disc-shaped center portion extends from a first end of the inner peripheral wall portion to a first end of the outer peripheral wall portion, and the metal cover portion further includes an extended portion that extends from a second end of the cylindrical outer peripheral wall portion and away from the center portion to the insert nut so as to oppose the cover fastening portion, and the insert nut is embedded in the resin cover portion of the cover member, and the metal cover fastening portion provided on the case side is formed by a bolt that screws and fastens to the insert nut from a mounting surface side toward the outside of the actuator, the bolt has a bolt head provided on the mounting surface side.