Patent ID: 7805887

Claim:
An open/close member driving apparatus comprising: a motor; a transmission member configured to transmit a driving force of the motor to an open/close member; a metallic base plate fixed to a vehicle body, wherein the base plate comprises: a swollen portion having a circular shape projected from the base plate; and a recess portion having a dish-shape and formed in the swollen portion; a speed reduction mechanism facing a surface of the swollen portion; a shaft; an output drum pivotally supported on the base plate via the shaft and to which the transmission member is connected; a clutch mechanism configured to switch between an engaged state such that the driving force from the motor is transmitted via the speed reduction mechanism to the output drum and a disengaged state such that the driving force is not transmitted via the speed reduction mechanism to the output drum, wherein the clutch mechanism and the speed reduction mechanism are superposed via the base plate such that a field core of the clutch mechanism is accommodated in the recess portion; and a fastening member, wherein the field core of the clutch mechanism accommodated in the recess portion is fixed to the recess portion having the dish-shape from a side of the swollen portion by the fastening member, and wherein the speed reduction mechanism comprises an annular recess which faces a head of the fastening member.