CYLINDRICAL MEMBER AND ROTARY ELECTRIC MACHINE

To provide a cylindrical member and a rotary electric machine, which can improve cooling performance.SOLUTION: An inner cylindrical member 6 includes: an inner cylindrical body 61 provided on an outer peripheral side of a stator 4; a plurality of circumferential flow paths 621 formed in the inner cylindrical body 61 so as to be arranged in an axial direction of the inner cylindrical body 61; circumferential partition walls 631 provided in the inner cylindrical body 61 so as to partition the adjacent circumferential flow paths 621; and a plurality of first ribs 641 which are arranged in a flowing direction of the circumferential flow paths 621 so as to incline in the flowing direction of the circumferential flow paths 621 and are provided in the circumferential flow paths 621.SELECTED DRAWING: Figure 2 【課題】冷却性能を向上させることができる筒部材及び回転電機を提供する。【解決手段】内筒部材６は、ステータ４の外周側に設けられている内筒本体６１と、内筒本体６１の軸方向に配列されるように内筒本体６１に形成されている複数の周方向流路６２１と、隣接する周方向流路６２１を仕切るように内筒本体６１に設けられている周方向仕切壁６３１と、周方向流路６２１の流れ方向に対して傾斜するように周方向流路６２１の流れ方向に配列されて周方向流路６２１に設けられている複数の第１リブ６４１と、を備える。【選択図】図２