Tire air replenishing device

A tire air filling device that is provided on a wheel attached to a tire, and that compresses air and fills an inside of the tire with the air, the device comprising:

• a cylinder having a first opening communicating with the tire;
• a weight that is provided inside the cylinder, that has an air flow hole through which the air to be supplied to the tire passes, and that moves in an axial direction of the cylinder upon a receipt of a centrifugal force, to supply the air from the first opening to the tire;
• a weight airtight member interposed between the weight and an inner surface of the cylinder;
• a weight spring that biases the weight to a side opposite to the tire;
• and
• an inclined member attached to a check valve that prevents a backflow of the air from the tire to the inside of the cylinder, and to the cylinder in a state where the cylinder is inclined with respect to the check valve.