Patent ID: 6891344

Claim:
An automatic opening and closing apparatus for a vehicle, which automatically opens and closes an opening and closing member attached to a vehicle in a freely opening and closing manner, comprising: a guide rail provided with a guide surface, said guide rail being formed tohave a flat shape extending toward the axial direction and fixed to said vehicle; a slide member having a rack portion provided with rack gears lining up in an axial direction on an outer peripheral surface of said rack portion and having a slide portion attached to an outer side of said guide rail so as to freely move in the axial direction along said guide surface of said guide rail; a link mechanism provided between said slide member and said opening and closing member, and transmitting a displacement of said slide member to said opening and closing member; and a driving means having an electric motor for rotating and driving an output pinion gear engaged with said rack gear and said output pinion gear, and oscillating said slide member between a first position at which said opening and closing member is in a fully closed state and a second position at which said opening and closing member is in a fully open state.