Opening and closing apparatus of vehicular opening and closing member

摘要

A rack includes a closed position teeth portion meshed with a teeth portion of an output gear when the rack is disposed at a closed position corresponding to a closed position of an opening and closing member and an opened position teeth portion meshed with the teeth portion of the output gear when the rack is disposed at an opened position corresponding to an opened position of the opening and closing member and a clearance between faces of teeth of the closed position teeth portion and the teeth portion of the output gear is made larger than a clearance between faces of teeth of the opened position teeth portion and the teeth portion of the output gear.