Patent ID: 7959204

Claim:
An electric opening/closing device for a vehicle, in which rotation of an electric motor is decelerated and transmitted to an opening/closing member mounted in a vehicle body and opening/closing an opening portion of the vehicle, the device comprising: a worm wheel meshed with a worm provided on a motor shaft of the electric motor; a planetary gear mechanism disposed coaxially with the worm wheel and decelerating the rotation of the worm wheel to transmit the rotation to an output gear; a gear case housing the worm wheel, a rotation shaft which mounts the worm wheel in a manner that the worm wheel is rotatable relative to the rotation shaft, the planetary gear mechanism, a support shaft which is disposed coaxially with the rotation shaft and fixed to the gear case and which mounts the planetary gear mechanism and the output gear in a manner that the planetary gear mechanism and the output gear are rotatable relative to the support shaft, and the output gear and assembled to the electric motor; and a swing arm having an input end and an output end and rotatably supported by the gear case through a swing shaft disposed between the input end linked to the output gear and the output end linked to the opening/closing member, and the swing arm includes a sector gear formed on an outer edge of the input end, and the sector gear meshed with the output gear such that the swing arm swings in conjunction with the output gear to move the opening/closing member for opening/closing.