PLUG DOOR DEVICE

A plug door device (1) relating to an embodiment includes a stationary base (3), a slidable base (4) slidable in a width direction relative to the stationary base (3) when acted upon by a driving force from a drive source (6), and a movement alignment mechanism (100, 200, 300) for controlling the front and rear ends of the slidable base (4) in a front-rear direction to move in the width direction toward the same side and by the same amount. The movement alignment mechanism (100, 200, 300) includes two stationary shaft members (101, 251, 301), two rotatable members (102, 202, 302), and a shaft (103, 203, 303). The stationary shaft members (101, 251, 301) are spaced away from each other in the front-rear direction and extend in a height direction. The rotatable members (102, 202, 302) each include a contact arm (111, 211, 311) in contact with the slidable base (4) and a transmission arm (113, 213, 313) having a transmission shaft member (112, 212, 312) spaced away from a corresponding one of the stationary shaft members (101, 251, 301). The contact arm (111, 211, 311) and the transmission arm (113, 213, 313) are rotatable integrally with the corresponding stationary shaft member (101, 251, 301) around the corresponding stationary shaft member (101, 251, 301). The front and rear ends of the shaft (103, 203, 303) are connected to the transmission shaft members (112, 212, 312) of the two rotatable members (102, 202, 302).