Abstract: A bladder-fixing unit fixes a bladder which expands in a tire to hold the tire, the bladder-fixing unit includes a shaft body inserted into the bladder, and a connecting body for fixing the bladder and for connecting the bladder and the shaft body to each other, the connecting body includes a switching mechanism for switching between a state where the connecting body pressurizes and comes into contact with an outer periphery of the shaft body and is fixed to the shaft body, and a movable state where the connecting body can move in an axial direction of the shaft body relative to the shaft body by releasing the state where the connecting body pressurizes and comes into contact with the outer periphery of the shaft body.

Abstract: A tire-holding device includes: a shaft body having a portion thereof inserted into a bladder which is fixed to the shaft body, the bladder expanding in a tire to hold the tire; and a support body which comes into contact with the shaft body to support the shaft body, the shaft body includes an inner hole placed inside the bladder, and an outer hole placed outside the bladder and is brought into communication with the inner hole, and the support body includes a support hole, and when the support body supports the shaft body, the outer hole and the support hole come into communication with each other irrespective of a position of the shaft body in its circumferential direction.

Abstract: A bladder-fixing unit fixes a bladder which expands in a tire to hold the tire, the bladder-fixing unit includes a shaft body inserted into the bladder, and a connecting body for fixing the bladder and for connecting the bladder and the shaft body to each other, the connecting body includes a switching mechanism for switching between a state where the connecting body pressurizes and comes into contact with an outer periphery of the shaft body and is fixed to the shaft body, and a movable state where the connecting body can move in an axial direction of the shaft body relative to the shaft body by releasing the state where the connecting body pressurizes and comes into contact with the outer periphery of the shaft body.

Abstract: A tire-holding device includes: a shaft body having a portion thereof inserted into a bladder which is fixed to the shaft body, the bladder expanding in a tire to hold the tire; and a support body which comes into contact with the shaft body to support the shaft body, the shaft body includes an inner hole placed inside the bladder, and an outer hole placed outside the bladder and is brought into communication with the inner hole, and the support body includes a support hole, and when the support body supports the shaft body, the outer hole and the support hole come into communication with each other irrespective of a position of the shaft body in its circumferential direction.