Automatic sliding door system for vehicles

An automatic sliding door system for vehicles which consists of:

• (A) a sliding door driving mechanism comprising:
• guide means affixed to a body of a vehicle so as to guide wires along a path for opening and closing movements of a sliding door, one ends of said wires being secured to the sliding door;
• a winding drum mounted to the body to be rotatable in either direction to send the wires along the guide means, in which another ends of said wires being wound round and outer circumference of said drum and secured thereto;
• and
• a driving motor mounted to the body and operatively connected to said winding drum through a speed reducer and an electromagnetic clutch;
• (B) an operating device mounted on the body for operating opening and closing movements of the sliding door;
• (C) a door lock releasing device comprising two parts, one of which is mounted on the body and connected to the operating device and another one of which is mounted on the sliding door and connected to a door lock of the sliding door, also comprising coupling means for connecting said two parts mechanically or electrically when the door is closed, and by operation of the operating device said door lock releasing device being actuated to release engagement of the door lock prior to starting operation of the sliding door driving mechanism;
• and
• (D) a control device electrically connected with the driving motor, the electromagnetic clutch and the operating device, and operating to energize the driving motor and the clutch so that the wires are sent in a direction to open the sliding door when the operating device is operated for opening, and also the wires are sent in another direction to close the sliding door when the operating device is operated for closing.