Tire air supplementing device
AssigneeMurakami Corporation
InventorHidenori Sato
Life of this patent
Estimating the term…
Abstract
A tire air filling device according to one embodiment includes: a cylinder; a weight which has an air flow hole and which receives a centrifugal force to move and cause air to be supplied to an inside of a tire; a first sealing member; a first spring; a first support portion; and a backflow prevention valve. The backflow prevention valve includes a slide member that slides in the air flow hole in an axial direction, a second spring that biases the slide member to a side opposite the tire, a second support portion that supports an end portion of the second spring in the axial direction; and a second sealing member interposed between an inner surface of the air flow hole and the slide member. The slide member, the second spring, and the second support portion are disposed inside the weight.
Claims7
A tire air filling device that is provided in a wheel attached to a tire, and that compresses air to fill an inside of the tire with the air, the device comprising:
- a cylinder having an opening facing the inside of 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 inside of the tire passes, and that receives a centrifugal force to move in an axial direction of the cylinder and to cause the air to be supplied from the opening to the inside of the tire;
- a first sealing member interposed between the weight and an inner surface of the cylinder;
- a first spring that biases the weight to a side opposite the tire;
- a first support portion that supports an end portion of the first spring in the axial direction;
- and
- a backflow prevention valve that prevents a backflow of the air from the weight to the side opposite the tire,
- wherein the backflow prevention valve includes a slide member that slides in the air flow hole in the axial direction, a second spring that biases the slide member to the side opposite the tire, a second support portion that supports an end portion of the second spring in the axial direction;
- and a second sealing member interposed between an inner surface of the air flow hole and the slide member, and
- the slide member, the second spring, and the second support portion are disposed inside the weight.
Dependencies are inferred from the claim text.