PROBLEM TO BE SOLVED: To provide a spool of a spinning reel for fishing, the spool being reduced in weight while maintaining its strength.SOLUTION: A spool 3 of the present invention includes: an outer member 20 consisting of a fishing line-winding body 21 where a fishing line is wound and a skirt part 22 for defining the spool winding amount of the fishing line-winding body, which are formed in a body from a metallic material a connection part 21a formed in a body in an inner surface of the fishing line-winding body, projected toward the inside in the radial direction, and having a joining part A at the projecting end side and an inner member 30 formed from a material of which the specific gravity is lower than that of the outer member 20, having an annular recess 38 disposed with a drag device 40, and joined with the joining part A and integrated with the outer member 20. Thus, the inner member 30 is rotatably supported to a spool shaft 10 while having an annular gap S between the inner surface of the fishing line-winding body 21 and itself.COPYRIGHT: (C)2015,JPO&INPIT【課題】強度を維持して軽量化が図れる魚釣用スピニングリールのスプールを提供する。【解決手段】本発明のスプール3は、釣糸が巻回される釣糸巻回胴部21と、釣糸巻回胴部の糸巻量を規定するスカート部22とを金属材料で一体形成した外側部材20と、釣糸巻回胴部の内面に一体形成され、径方向内側に向けて突出すると共に突出端側に接合部Aを有する連結部21aと、外側部材20よりも低比重の材料で形成され、ドラグ装置40が配設される環状凹所38を具備すると共に、接合部Aと接合して外側部材20と一体化される内側部材30と、を有する。そして、内側部材30は、釣糸巻回胴部21の内面との間で環状の空隙Sを有する状態でスプール軸10に対して回転可能に支持されている。【選択図】 図2
