Sliding door device

A sliding door device, comprising:

• a rail having a straight portion for linearly guiding a support shaft attached to a sliding door and an inclined portion which is inclined with respect to the straight portion and obliquely guides the support shaft;
• a pull-in device having a base, a catcher slidable relative to the base, and a spring disposed between the base and the catcher, which can capture a trigger provided on the rail and which can only linearly move along the straight portion of the rail when the sliding door is closing;
• and
• a pull-in force transmission part which is coupled to the pull-in device and moves the support shaft along the inclined portion according to linear movement of the pull-in device,
• wherein the pull-in force transmission part includes:
• a roller traveling body which can travel on at least the inclined portion of the rail, and
• an arm rotatably coupled to the roller traveling body and the pull-in device,
• wherein the support shaft is supported by the roller traveling body.