Plug door device

A plug door device, comprising:

• a drive source;
• a plug operation portion configured to move, based on a drive force of the drive source, a door installed at a doorway of a vehicle in a width direction of the vehicle;
• a front-back operation portion configured to move, based on the drive force of the drive source, the door in a front-back direction of the vehicle;
• a movement suppressing portion configured to suppress movement of the door in the front-back direction, wherein the movement suppressing portion includes:
• a guide rail mounted to the vehicle;
• and
• a shaft member mounted to the door and configured to move along the guide rail, wherein the guide rail includes a first portion extending in the width direction and configured to suppress movement of the shaft member in the front-back direction;
• a planetary gear mechanism configured to:
• distribute the drive force of the drive source to the plug operation portion in a case where movement of the door in the front-back direction is suppressed by the movement suppressing portion, and
• distribute the drive force of the drive source to the front-back operation portion in a case where movement of the door in the front-back direction is not suppressed by the movement suppressing portion;
• a fixed base fixed to the vehicle and including the guide rail;
• and
• a slide base movable in the width direction with respect to the fixed base by the plug operation portion, the slide base having the drive source, the front-back operation portion, and the planetary gear mechanism mounted thereto.