A side of the seal member 35 is provided rotatably to a car-side door sill 31. The rotation of the side allows the side to be displaceable between a sealing position and an evacuation position. The link mechanism for rotating the seal member 35 releases an engagement with the car-side actuating member to rotate the seal member 35 to a sealing position and fixes the seal member 35 at the sealing position. The link mechanism engages with the actuating member and releases the fixing of the seal member 35 at a sealing position when the car door moves to the door-close end.