Patent ID: 7954880

Claim:
A sliding door structure of a vehicle for sliding a door body with respect to an opening portion of a vehicle body in a forward direction and a rearward direction of the vehicle body for opening and closing, the sliding door structure comprising: a rail disposed on the door body and aligned with the forward and rearward directions of the vehicle body; and an arm protruding from an edge portion on a rearward side of the opening portion of the vehicle body, and configured to engage with the rail to hold the door body movably in the forward and rearward directions, wherein the arm comprises a lock mechanism configured to lock the movement of the door body relative to the arm, wherein the arm is configured to rise and fall in a width direction of the vehicle and configured to push the door body outward beyond an outside plate of the vehicle body at a beginning of the opening of the door body, wherein the lock mechanism releases a lock between the door body and the arm when the door body moves to a predetermined position relative to the vehicle body during an opening operation of the door body, and wherein the lock mechanism comprises an arm side engagement portion configured to engage with a vehicle body side engagement portion disposed on a longitudinal wall of an edge portion on the rearward side of the opening portion of the vehicle body.