Patent ID: 7288907

Claim:
A half-open position holding apparatus for a vehicle opening and closing member comprising: an opening and closing member supported in a vehicle body to be openable and closable; an opening and closing member driving unit having a motor and an electromagnetic clutch that can connect and disconnect a power transmission path connecting the motor and the opening and closing member, for driving the opening and closing member in opening and closing directions; an in-vehicle battery serving as a power source for the electromagnetic clutch; and a controller controlling the opening and closing member driving unit and, when the opening and closing member is held at a half-open position, holding the opening and closing member at the half-open position between a fully-closed position and a fully-opened position by stopping the motor, putting the electromagnetic clutch in a connected state, and controlling the electromagnetic clutch to a half-open position holding connection state such that a voltage applied to the electromagnetic clutch is put in a predetermined voltage lower than an output voltage of the in-vehicle battery.