Sliding door apparatus

A sliding door apparatus comprising:

• a rail having an inner surface formed to have a concave shape, the inner surface having a first support surface and a second support surface which are not parallel to each other;
• a hanger having a first driving member in rolling contact with the first support surface, and a second driving member in rolling contact with the second support surface;
• and
• a door body configured to be moved in a longitudinal direction of the rail through the hanger;
• wherein
• when seen along the longitudinal direction of the rail, the first support surface and the second support surface are formed to come close to each other as they extend toward a bottom of the inner surface;
• the rail is located to extend along an outer circumferential edge part of an opening part that is opened and closed by the door body;
• when seen along the longitudinal direction of the rail, the first support surface is located closer to the opening part than the second support surface;
• the first support surface includes a flat part, and an inclined part inclined from the flat part toward the opening part;
• the first driving member and the second driving member are rollers;
• a rotation axis line of the first driving member is orthogonal to a rotation axis line of the second driving member at a central point of the second driving member in a direction of the rotation axis line of the second driving member, in plane of projection projected in the longitudinal direction of the rail;
• and
• the first driving member and the second driving member are located to be overlapped with each other, in said projected plane.