PROBLEM TO BE SOLVED: To provide a fishing reel on which a spool reducing an inertial force due to the lightening of the spool and giving a high efficiency of rotation is loaded.SOLUTION: In a spool used in a fishing reel, a line-winding body portion for winding and storing a fishline has a hollow cylindrical shape and a rib portion joined in the inner center of the line-winding body portion around the whole circumference in the direction orthogonal to the inner surface of the cylinder has a plurality of penetrated holes where at least line-winding body portion side among the end portions of both the surfaces is joined to the inner surface of the fine-winding body portion in a curved surface state, and which are opened so that the ends of the openings enter the curved surface state region adjacent to the inner surface of the line-winding body portion.COPYRIGHT: (C)2013,JPO&INPIT【課題】軽量化により慣性力を低減し、高い回転効率が図られたスプールを搭載する魚釣用リールが要望されている。【解決手段】魚釣用リールに用いられるスプールは、釣糸を巻回収納する糸巻胴部が中空な円筒形状を成し、内部中央で円筒内面と直交する方向で全周に亘り接合するリブ部は、両面の端部のうち少なくとも糸巻胴部側がこの糸巻胴部の内面に曲面状に繋がり、開口端が糸巻胴部の内面に隣接する前記曲面状の領域に入り込むように開口された複数の貫通孔を有する構成である。【選択図】図2
