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    • 4. 发明申请
    • Fuel cutoff valve
    • 燃油切断阀
    • US20090000669A1
    • 2009-01-01
    • US12213980
    • 2008-06-26
    • Hiroaki KitoKenichiro KanekoHiroshi NishiShoichiro KumagaiHiroshi KitamuraYasuhiro HasegawaShoji Uhara
    • Hiroaki KitoKenichiro KanekoHiroshi NishiShoichiro KumagaiHiroshi KitamuraYasuhiro HasegawaShoji Uhara
    • F16K24/04
    • F16K24/044Y10T137/3099
    • A fuel cutoff valve 10 has a float assembly 52 and an upper valve plug 60 located in a valve chest 30S defined by a casing 20. The float assembly 52 has a valve support member 55 formed in its upper portion to support the upper valve plug 60. The upper valve plug 60 has a support convex 66b held on a support plane 56a of the valve support member 55, where a center of gravity of the upper valve plug 60 is located below a supporting point 55a around which the support convex 66b is balanced on the valve support member 55. The upper valve plug 60 includes a first valve section 61 and a second valve section 65. The first valve section 61 has a first valve body 62 and a sheet member 64. The first valve body 62 is made of POM (polyoxymethylene), while the second valve section 65 is made of PA6 (polyamide) containing 30% of glass fibers. The second valve section 65 is accordingly structured to have a lower density than the first valve body 62. This arrangement ensures the excellent sealing property even in the event of vibration of the fuel cutoff valve 10 submerged in the liquid fuel by inclination of the vehicle body.
    • 燃料切断阀10具有浮子组件52和位于由壳体20限定的阀座30S中的上阀塞60.浮子组件52具有形成在其上部中的阀支撑构件55,以支撑上阀塞60 上阀塞60具有保持在阀支撑构件55的支撑平面56a上的支撑凸起66b,其中上阀塞60的重心位于支撑点55a的下方,支撑凸起66b平衡在支撑点55a的下方 上阀塞60包括第一阀部分61和第二阀部分65.第一阀部分61具有第一阀体62和片状部件64.第一阀体62由 POM(聚甲醛),而第二阀部65由含有30%玻璃纤维的PA6(聚酰胺)制成。 因此,第二阀部65的密度比第一阀体62的密度低。即使在通过车体倾斜而液体燃料淹没的燃料切断阀10的振动的情况下,也能够确保优异的密封性 。