Patent ID: 8839560

Claim:
A power unit for a movable member comprising: a motor; a rotational body for moving a movable member when the rotational body is rotated about an axis of rotation by power of the motor; an electromagnetic clutch mechanism displaceable between a connecting state in which a rotation of the motor is transmitted to the rotational body and a disconnecting state in which a rotation of the motor is not transmitted to the rotational body; a lead wire to supply electric power to an annular coil part of the electromagnetic clutch mechanism, the lead wire having a length that extends in a length direction; and a base plate provided with the annular coil part and with an elongated slit having a length dimension, the base plate having two sides and a thickness between the two sides, and the elongated slit is an opening in the base plate that extends entirely through said base plate, from the one side of the base plate to the other side of the base plate, in a direction perpendicular to the length dimension of said elongated slit, the base plate extending in a direction generally perpendicular to the axis of rotation and the elongated slit extending along a plane perpendicular to the axis of rotation, wherein the annular coil part is disposed at one side of the base plate, and the lead wire is inserted into the elongated slit from the one side of the base plate, a portion of the length of the lead wire extends along the elongated slit with the portion of the length of the lead wire being located substantially between the two sides of the base plate and extending in the length direction of the lead wire parallel to the length dimension of the elongated slit, and is led out of the elongated slit to the other side of the base plate.