SLIDE DOOR STRUCTURE OF VEHICLE

PURPOSE:To perform the opening and closing of a door always simply and appropriately by decreasing the sliding force in order to have the slide door slided upward along the inclining direction and increasing the sliding force in order to have the slide door slided downward. CONSTITUTION:When an aperture 10a formed at the side part of a car body 10 is released by sliding a slide door 12, this release is detected by a door switch that is not shown on the illustration and an inclination sensor 14 is actuated. The inclination sensor 14 detects the inclined state of the car body and activates the rotation of a motor 20. The motor 20 rotates in the opposite direction from the rotating direction of a gear 24 when the door 12 slides downward in the inclining direction by the gravitation, and the motor 20 transmits torque to the gear 24 through a liquid clutch 22. Accordingly, when the door 12 slides upward along the inclining direction, the sliding force becomes smaller, and when the door slides downward, the sliding force becomes bigger.