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 fishline-winding body portion for winding and storing a fishline has a hollow cylindrical shape a rib portion joined in the inner center of the fishline-winding body portion around the whole circumference in the direction orthogonal to the inner surface of the cylinder has a tapered shape whose thickness is narrowed from a spool shaft-inserting portion for inserting the spool shaft to the fishline-winding body portion both the ends of the taper surface are connected to the shaft insertion portion and the fishline-winding body portion in curved shapes, respectively and a plurality of penetrated holes whose opening areas are enlarged from the shaft insertion portion to the fishline-winding portion are equally arranged on the rib from the curved portion on shaft insertion portion side to the curved portion on the fishline-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が、スプール軸を嵌装する軸挿入部から糸巻胴部に向かい、厚みが狭まるテーパー形状を成し、テーパー面の両端が糸巻胴部及び糸巻胴部のそれぞれに曲面状に繋がり、前記軸挿入部側の曲面状から糸巻胴部側の曲面状まで、軸挿入部から糸巻胴部に向かい、開口面積が大きくなる形状の貫通孔がリブ部上に均等配置される構成である。【選択図】図2
