| 摘要 |
PROBLEM TO BE SOLVED: To provide a mechanism with extremely high reliability requiring no feeding of electricity for control of a storage tank of air replenished to a tire in a wheel of an automobile. SOLUTION: In the wheel, a sub-passage 42 is connected to a cylinder 43 and a piston 44 is urged in a direction retreated from the cylinder 43 in resistant to urging of an elastic body 45 by giving an internal pressure of the tire T to a part between a distal end of the piston 44 and the inside of the cylinder 43. An opening/closing valve 41 openably/closably closes a passage 3. When the internal pressure of the tire is in the normal state, the piston 44 closes the passage 3 by the opening/closing valve 41 and when the internal pressure is reduced, the piston 44 advances into the cylinder 43 by urging of the elastic body 45 and the passage 3 is released from the closure of the opening/closing valve 41. At least a part of the passage 3 for connecting the storage tank 2 and the tire T is formed in a wheel body 100 or on a surface facing to a vehicle body side of the wheel body 100. COPYRIGHT: (C)2006,JPO&NCIPI
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