PROBLEM TO BE SOLVED: To provide a seal structure of a fuel tank cap in which the curling and twisting are not caused when attached, and dust is prevented from entering a fuel tank.SOLUTION: A cap 8 is formed in a rotary type and attached to a fuel tank 2. A seal member 12 has a fixing part 78 clamped by a base end member 10 and a tip member 14 in an inner circumferential side, and includes an elastic part 84 extended in the shape of a skirt in an outer circumference side. A bead 86 is formed in an outer circumferential edge of the elastic part 84. The bead 86 is formed, and therefore the curling and twisting are hard to be caused in the outer circumferential edge of the seal member 12 even if the outer circumferential edge of the seal member 12 is made to slide in an outer edge of a lubrication hole 6 in the circumferential direction. Also, the elastic part 84 is formed in a skirt shape, so that the outer circumferential edge of the seal member 12 slides on the outer edge of the lubrication hole 6 outside in the radial direction when attaching the cap 8, and thereby the dust deposited on the outer edge of the lubrication hole 6 is extruded so as to be kept away from the lubrication hole 6.

    【課題】取り付ける際に捲れや捩れが生じず、かつ燃料タンクにごみが侵入することを抑制する、燃料タンク用キャップのシール構造を提供する。【解決手段】キャップ8は、回転式で燃料タンク2に取り付けられる。シール部材12は、内周側に基端部材10及び先端部材14に挟持される固定部78を有し、外周側にスカート状に延出する弾性部84を備える。弾性部84の外周縁にはビード86が形成されている。ビード86が形成されているため、シール部材12の外周縁が周方向に給油孔6の外縁を摺動してもシール部材12の外周縁に捲れや捩れが生じにくい。また、弾性部84がスカート状をなすため、キャップ8の取り付け時に、シール部材12の外周縁が、給油孔6の外縁を半径方向外側に摺動して給油孔6の外縁に付着したごみを給油孔6から遠ざけるように押し出す。【選択図】図7


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    Title :

    TANK CAP AND SEAL STRUCTURE


    Additional title:

    タンク用キャップ及びシール構造


    Contributors:

    Publication date :

    2015-12-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B65D Behältnisse zur Lagerung oder zum Transport von Gegenständen oder Materialien [Container], z.B. Säcke, Beutel, Fässer, Flaschen, Dosen, Kästen, Büchsen, Schachteln, Packkörbe, Tonnen, Gläser, Flüssigkeitsbehälter, Trichtersilos, Transportbehälter , CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F16J Kolben , PISTONS



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