Patent ID: 8464470

Claim:
A platform door device comprising a guide body installed on a platform, a door, a driving mechanism for moving the door forwardly and backwardly to close and open a gate on the platform, and a guiding mechanism for guiding the door being moved forwardly or backwardly, wherein: the driving mechanism includes a motor, a rotation body adapted to be rotated by the motor, and a driven body adapted to be driven according to the rotation of the rotation body so as to move the door; and the door moves forwardly or backwardly with at least a part of the door being located inside the guide body, and includes a panel-shaped main body, and a base segment, the base segment being detachably joined to the main body and to which the driven body is attached; the guiding mechanism includes a linear rail extending in a direction of the movement of the door, and a guide block adapted to be slidingly moved with respect to the linear rail; the main body includes a frame assembly that is formed in a frame shape by assembling a plurality of frame members together; the base segment is joined to the frame assembly so that at least a part of the guide block is located within a thickness range of the frame assembly and includes a mounting portion and an extension portion, the mounting portion having a lower section, the extension portion extending downward from the lower section of the mounting portion and having a thickness less than a thickness of the frame assembly; the lower section of the mounting portion having a portion that is located within the thickness range of the frame assembly and is mounted with one of the linear rail and the guide block; and the driven body being located within the thickness range of the frame assembly at a position lower than one of the linear rail and the guide block and being joined to a lower end portion of the extension portion.