| 摘要 |
PURPOSE: A safe tire is provided to remove annoyingness due to the air injection, the air maintenance and a puncture. CONSTITUTION: A safe tire(120) comprises a coil spring(130). The coil spring is installed along the internal space of the tire. The coil spring elastically supports the inner side of the tire and the outer circumferential surface of a rim(110). The coil spring supports the load of a moving unit and maintains the shape of the tire. A support for surface contact is formed on a part of the coil spring, which makes contact with the inner side of the tire. The actual length of the coil spring is longer than the arranged length on the inner side of the tire.
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