FUEL SUPPLY DEVICE

To provide a fuel supply device which can be arranged in a saved space, can improve fuel supply efficiency, and can improve fuel suction efficiency.SOLUTION: A fuel supply device 1 for supplying fuel F in a fuel tank 2 includes a flange member 30 having an oval contoured shape covering an opening part 2b opening in a side wall surface part 2c of the fuel tank, a fuel pump 10 arranged in the fuel tank along an arrangement surface 30a of the flange member, a pump storage member 20 storing the fuel pump and mounted to the flange member, a fuel flow path storage part 70 in which a fuel flow path passing through the flange member in the thickness direction is arranged and which protrudes from the arrangement surface into the fuel tank, a discharge pipe 34a outside the fuel tank, and an external connector 33 outside the fuel tank, the oval contour longitudinal direction of the flange member being inclined.SELECTED DRAWING: Figure 10 【課題】省スペースで配置可能、燃料供給効率向上可能、燃料吸引効率向上可能な燃料供給装置を提供する。【解決手段】燃料タンク２内の燃料Ｆを供給する燃料供給装置１であって、燃料タンクの側壁面部２ｃに開口した開口部２ｂを覆うオーバル輪郭形状を有するフランジ部材３０と、フランジ部材の配置面３０ａに沿って燃料タンク内に配置される燃料ポンプ１０と、燃料ポンプを収容してフランジ部材に取り付けられるポンプ収容部材２０と、フランジ部材を厚さ方向に貫通する燃料流路が内部に配置されて配置面から燃料タンク内に突出する燃料流路収容部７０と、燃料タンク外の吐出配管３４ａと、燃料タンク外の外部コネクタ３３と、を備え、フランジ部材のオーバル輪郭長軸方向が傾斜している。【選択図】図１０