| 摘要 |
PURPOSE:To reduce the number of parts for cost down by supporting an extension valve at the side of an internal load wheel. CONSTITUTION:To attach an extension valve 30 to an air valve 27, a nut 42 is first screwed on a male screwed part 41 of the valve and the valve 30 is inserted from its extremity 30a through a through hole 43 in a supporting plate 40. The valve 30 is screwed on the male screwed part 28 of an air valve 27 and a locking part 44 of the supporting plate is secured to the partial periphery of a service hole 25 before the nut 42 is tightened to the supporting plate 40 to press against it. The nut 42 thus urges the supporting plate 42, having the supporting plate 40 tightly secured to the internal load wheel 23, on account of which the extension valve 30 may be supported by the internal load wheel 23. |
