| 摘要 |
PURPOSE:To eliminate the need for an O ring extending over the whole circumference between the outer circumferential surface of a spoke connecting ring and the circumferential surface of a valve inserting rim, and to reduce cost by fitting an airtight seal between the side wall of the air injection valve and the inner wall of a through-hole of the rim of the assembled wheel. CONSTITUTION:An air injection valve 11 is inserted into a through-hole 5c formed to the spoke connecting ring 5 and the through-hole 6c formed to the rim 6 in a manner concentrical with and the same diameter as the through-hole 5c. A stepped difference section 11a formed to the side section of the air injection valve 11 are fixed to the spoke connecting ring 5 and the rim 6 through a sealing member 12 sealing a section between the spoke connecting ring 5 and the rim 6 containing the inner walls of the through-holes 5c, 6c corresponding to the stepped difference section 11a in an airtight manner. The air injection valve may also be made of a rubber and the stepped difference section 11a and the sealing member unified. |
