Mirror device for vehicle

An electrically powered folding mirror device for a vehicle, the mirror device comprising:

• a support shaft including a base portion;
• a case installed on the support shaft, the case including a fitting portion disposed around an outer periphery of the base portion of the support shaft;
• a mirror unit attached to the case and swingable around the support shaft, by rotation of the fitting portion around the support shaft, for positioning at positions including a viewing position and a folded position;
• a motor base attached inside the case;
• an electric motor mounted to the motor base and including a motor output shaft which penetrates the motor base;
• a transmission mechanism provided inside the case, operationally connected to the motor output shaft, and including a worm gear connected with the motor output shaft so as to be moveable in an axial direction of the motor output shaft but not rotatable relative to the motor output shaft, the transmission mechanism acting to swing the case and mirror unit when the motor is operated;
• and
• a control portion provided at a side of the motor base,
• wherein the case includes an inner bottom portion rotatably supporting a lower end portion of the worm gear, and an upper end portion of the worm gear is rotatably supported by the motor base, and said worm gear is captured between said inner bottom portion said motor base and restrained from moving in a perpendicular direction with respect to said motor output shaft by the control portion.