AUTO-DOOR LOCK DEVICE FOR AN AUTOMOBILE

摘要

An automatic opening and shutting apparatus of a car door having a final deduction gear(3b), a screw rod(4), a cylinder(5) and connecting bars(7a,7b) is disclosed. The screw rod(4) is mounted on the side of the final deduction gear(3b) against the casing(1) mounted reduction gears(3a,3b) and a motor(2). The cylinder(5) is disposed outside of the screw rod(4). The ball bearing(6) which can roll is fixed between the screw of the outer surface of the screw rod(4) and the cylinder(5). The connecting bars(7a,7b) are respectively mounted on one end of said cylinder(5) and one end of said casing(1) and hinged respectively the fixed parts(8a,8b) fixed to the center column(100) and the door(101). Thereby, it is possible to forcibly open the door on emergency.