PROBLEM TO BE SOLVED: To provide a cylindrical reel seat that is lightweight and highly sensitive, and provide a reel seat body and a fishing rod.SOLUTION: A reel seat body 7 includes a first cylindrical part 21 having a fixation hood part 12, a second cylindrical part 22 having a male screw part 13, and a bridge part 23 for connecting the first cylindrical part 21 with the second cylindrical part 22 in an anti-reel mounting side. In the reel seat body 7, a recess 15 recessed from a reel mounting side toward the anti-reel mounting side is deeply formed crossing a rod insertion hole 10 into the anti-reel mounting side. The rod insertion hole 10 is divided by the recess 15, and formed in the first cylindrical part 21 and the second cylindrical part 22, respectively. Also, an inner face 23b of the bridge part 23 is positioned radially outward more than the rod insertion hole 10. The bridge part 23 has a cross section shape of an outside convex in which an outer face 23a and the inner face 23b are curved radially outward together, in a cross section view where a middle part in the axial direction is cut into the direction perpendicular to the axial direction.SELECTED DRAWING: Figure 9COPYRIGHT: (C)2018,JPO&INPIT【課題】軽量且つ高感度な筒状リールシートとリールシート本体並びに釣竿を提供する。【解決手段】リールシート本体７は、固定フード部１２を有する第一筒部２１と、雄ネジ部１３を有する第二筒部２２と、第一筒部２１と第二筒部２２を反リール装着側において連結するブリッジ部２３とを備え、リールシート本体７には、リール装着側から反リール装着側に向けて凹んだ凹部１５が竿挿通孔１０を反リール装着側に越えて深く形成されていて、該凹部１５により竿挿通孔１０は分断されて第一筒部２１と第二筒部２２にそれぞれ形成されていると共にブリッジ部２３の内面２３ｂは竿挿通孔１０よりも径方向外側に位置し、ブリッジ部２３は、その軸線方向の中途部を軸線方向と直交する方向に切断した横断面視において、外面２３ａと内面２３ｂが共に径方向外側に湾曲した外側凸の横断面形状を有している。【選択図】図９
