| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive reinforcing airbag for a safety tire keeping excellent durability even if used for a long period. SOLUTION: The reinforcing airbag 1 shaped in a hollow ring, and stored in a tire 2 to form a safety tire. When the reinforcing airbag 1 is filled with air with inner pressure set from a relationship with predetermined air pressure of the tire 2, spaces S<SB>1</SB>, S<SB>2</SB>are respectively formed in the tire 2 and the reinforcing airbag 1. On the other hand, when the inner pressure of the space S<SB>1</SB>of the tire 2 is lowered due to a blowout and the like, the reinforcing airbag 1 is deformed to increase a diameter, thereby taking over supporting of a load from the tire 2. The reinforcing airbag 1 is equipped with an air impermeable tube 6, and a hoop reinforcing layer 7 surrounding the whole periphery of a crown portion of the tube. On an outer peripheral surface of the tube 6, a movement preventing means 8 for preventing the hoop reinforcing layer 7 from moving in a width direction is provided. COPYRIGHT: (C)2006,JPO&NCIPI
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