To provide a fuel tank in which an upper joint flange of an upper tank half body and a lower joint flange of a lower tank half body are seam-welded by a pair of roller electrodes sandwiching the upper joint flange and the lower joint flange so as to prevent increase of material cost by avoiding plenty of metallic material for molding to be used to increase tank volume and improve moldability.SOLUTION: A lower tank half body 32 of a fuel tank comprises: a lower tank body part 34; and extended tank parts 35 which are shallower than the lower tank body part 34 on both sides of the lower tank body part 34. Roller relief recess parts 61, 62 are formed being hollowed inward to avoid contacting with at least one of a pair of roller electrodes on at least one lateral wall of an upper tank half body 30 and the lower tank half body 32 at a position of a junction 39 by seam weld corresponding to a connecting part between a body corresponding juncture 39a and an extended tank corresponding juncture 39b.SELECTED DRAWING: Figure 5

    【課題】上タンク半体の上接合フランジと、下タンク半体の下接合フランジとが、上接合フランジおよび下接合フランジを挟む一対のローラ電極でシーム溶接される燃料タンクにおいて、成形用の金属板材を大きく使うことを回避して材料費が嵩むことを防止しつつ容量の増大を図るとともに成形性を高める。【解決手段】下タンク半体32に、下タンク本体部34と、下タンク本体部34よりも浅くして下タンク本体部34の両側の拡張タンク部35とが形成され、シーム溶接による接合部39のうち本体対応接合部分39aへの拡張タンク対応接合部分39bの連設部に対応した位置で上タンク半体30および前記下タンク半体32の少なくとも一方の側壁に、一対のローラ電極のうちのうち少なくとも一方のローラ電極との接触を避けるローラ逃げ凹部61,62が内方に凹んで形成される。【選択図】 図5


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    Titel :

    FUEL TANK AND SADDLE-RIDING TYPE VEHICLE


    Weitere Titelangaben:

    燃料タンクおよび鞍乗り型車両


    Beteiligte:
    HIRANO KOHEI (Autor:in) / MURASAWA KOTA (Autor:in) / MASUDA RYUJI (Autor:in) / TAKASHIMA MOTOAKI (Autor:in)

    Erscheinungsdatum :

    2019-04-25


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS



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