Fluid coupling and method of manufacturing fluid coupling

摘要

An impeller 3 configures a fluid chamber and includes impeller blades 17 and an annular impeller hub 18 . A turbine 4 is disposed to face the impeller 3 and includes turbine blades 22 and an annular turbine hub 23 disposed at an inner peripheral side of the turbine blades 22 . A ball bearing 8 is disposed between an inner peripheral surface of the impeller hub 18 and an outer peripheral surface of the turbine hub 23 . A first stop ring 34 that engages with a first groove 19 and an engagement groove 31 a fixes the ball bearing 8 with respect to the impeller hub 18 due to the ball bearing 8 and the impeller hub 18 being brought into close proximity to each other in the axial direction. A second stop ring 35 engaged with a second groove 24 a fixes the ball bearing 8 and the turbine hub 23.