PROBLEM TO BE SOLVED: To provide a seal structure of fuel tank showing a high level seal performance while its low cost and light weight being attained by a simple configuration.SOLUTION: This seal structure comprises a protrusion part 3 protruded from and arranged at a resin tank main body 2; a mouth member 7 fixed along the inner peripheral surface of the protrusion part 3 and having the first cylindrical part 7a; the second cylindrical part 10a inserted along the inner surface of the mouth member 7 and into the mouth member 7; a cover member 10 including a flange part 10b covering the upper end of the second cylindrical part 10a and extended and arranged at the outer peripheral side of the second cylindrical part 10a and a cylindrical suspended part 10d suspended down from the outer peripheral edge of the flange part 10b; and an annular seal member 9 installed between the protrusion part 3 and the cover member 10. The protrusion part 3 is provided with an annular shoulder surface 3a supporting the seal member 9 along inserting direction of the cover member 10, and the annular seal member 9 supported by the annular shoulder surface is held between the outer peripheral surface (the first seal surface 3b) of the protrusion part 3 and the inner peripheral surface (the second seal surface 10i) of the suspended part 10d.

    【課題】簡易な構成で低コスト/軽量化を図りつつ、かつ高度なシール性能を備える燃料タンクのシール構造を提供すること。【解決手段】樹脂製のタンク本体2から突設された突出部3と、突出部3の内周面に沿って固定され第1筒状部7aを有する口部材7と、口部材7の内面に沿って口部材7の内部に挿入される第2筒状部10a、第2筒状部10aの上端を覆うとともに第2筒状部10aの外周側に延設されたフランジ部10bおよびフランジ部10bの外周縁から下方に垂下する筒状の垂下部10dを備える蓋部材10と、突出部3と蓋部材10との間に装着される環状のシール部材9とを備え、突出部3にはシール部材9を蓋部材10の挿入方向について支持する環状肩面3aが設けられ、これに支持されたシール部材9が、突出部3の外周面(第1シール面3b)と垂下部10dの内周面(第2シール面10i)との間に挟持される。【選択図】図5


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    Title :

    SEAL STRUCTURE OF FUEL TANK


    Additional title:

    燃料タンクのシール構造


    Contributors:

    Publication date :

    2015-06-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

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



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