Patent attributes
A structure includes a rail mounted on a vehicle body, a rail roller device connected to the rail, a slider mounted on the rail roller device, a movement support device having a first side fixed to a door and a second side connected to the slider, and a catch-pawl locking device including catches and pawls locked to or unlocked from one another while rotating. The catches and the pawls include a first catch and a first pawl for restricting a movement of the rail roller device in a first direction when the first catch and the first pawl are locked to each other, and a second catch and a second pawl for restricting a movement of the movement support device in a second direction perpendicular to the first direction when the second catch and the second pawl are locked.