(57) Abstract Objective When pressure inside the fuel tank has been high, kiyatsuRemoving pu suddenly to do it not to be possible, the fuel from the oil supply opening blowingThe on vehicle fuel filler cap which does not have the apprehension which starts coming stoppingIt offers Constitution Filler neck 1 of portion of fuel tank of vehicleFrom oil supply opening 13 of 2 lower part 14c of cap 14 insideIn order to project, it configurates. Lower part 14 of aforementioned cap 14Directing to the side, frequent appearance distribution facilities it is possibly done in c, in projection state beforeThe person in charge stopping in the marginal circles wall 13b of description oil supply opening 13, cap 1The disengagement prevention component 16 which does the coming out stop of 4 is done distribution facilities,ru. And in this disengagement prevention component 16 attaching power of immersion direction givingYou obtain the insert section pressure inside 15 which and the aforementioned fuel tank high tensionThe tsu it is the time, aforementioned disengagement prevention component 16 energization of aforementioned insert section 15Resisting power, the diaphragm 17 which it makes extend and needle 20With distribution facilities it has done.
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