| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly reliable mechanism not requiring supply of electricity for controlling a storage tank of air to replenish a tire concerning a wheel of an automobile. SOLUTION: This wheel is furnished with an opening and closing valve 41 provided on a passage, an auxiliary passage communicated with the inside of the tire, a cylinder 43, a piston 44 connected to the opening and closing valve 41 and an elastic body 45 such as a spring to energize the piston 44, etc. The auxiliary passage 42 is connected to the cylinder 43 and energizes the piston 44 in the direction to retreat it from the cylinder 43 against energizing of the elastic body 45 by giving internal pressure of the tire between a head end of the piston 44 and the inside of the cylinder 43. The opening and closing valve 41 openably blocks the inside of the passage. The piston 44 arranges and positions the opening and closing valve 41 at a position to block the inside of the passage 3 and proceeds to the inside of the cylinder 43 and opens the passage from blocking of the opening and closing valve 41 by energizing force of the elastic body when the internal pressure of the tire is lowered. COPYRIGHT: (C)2006,JPO&NCIPI
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