PROBLEM TO BE SOLVED: To close an end portion of a fuel supply passage located within a fuel tank without sacrificing fuel supply performance into the fuel tank.SOLUTION: A fuel supply passage opening/closing device 10 according to the present invention has a fuel supply passage 3 which supplies a fuel and a fuel tank 2 which can accommodate the fuel flowing from the fuel supply passage, the fuel supply passage has an end opening part 3a1 provided on one side thereof, connected to the fuel tank, and protruding into the tank, and a fuel-supply-side opening part 3b1 provided on the other side relative to a connection-side opening part, the connection-side opening part is provided with an on-off valve 11 which is provided to be rotatable and which moves in the opening direction A1 by an inflow pressure of the fuel supplied from the fuel-supply-side opening part, the on-off valve has an energization member 12 which is provided at a position where the energization member 12 is immersed in the fuel within the fuel tank when the fuel of a specified amount is fully filled within the fuel tank, and energizes the connection-side opening part in the closing direction A2, and a buoyant member 13 which is provided integrally with the on-off valve and applies a buoyant force to the on-off valve in the closing direction, and the buoyant force of the buoyant member 13 is caused to act in the closing direction A2 when the supply of the fuel is stopped.SELECTED DRAWING: Figure 2

    【課題】燃料タンク内への燃料供給性能を犠牲にすることなく、同タンク内に位置する燃料供給路の端部を閉じる。【解決手段】本発明に係る燃料供路開閉装置10は、燃料を供給する燃料供給路3と、燃料供給路から流入される燃料を収容可能な燃料タンク2とを有し、燃料供給路は、一方側に燃料タンクと接続されてタンク内部へ突出した端部開口部3a1と、接続側端口部とは他方側に給油側開口部3b1を有し、接続側開口部には回動可能に設けられ、給油側開口部から給油される燃料の流入圧力により開方向A1に移動する開閉弁11とを備え、開閉弁は、燃料タンク内に規定量の燃料が給油された満タン時に燃料タンク内の燃料に液没する位置に設けられ、接続側開口部を閉方向A2に付勢する付勢部材12と、開閉弁と一体的に設けられ開閉弁に閉方向への浮力を与える浮力部材13を有し、給油停止時に浮力部材13による浮力を閉方向A2に作用させている。【選択図】図2


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    Title :

    FUEL SUPPLY PASSAGE OPENING/CLOSING DEVICE


    Additional title:

    燃料供給路開閉装置


    Contributors:

    Publication date :

    2016-06-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF



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