Stator assembly for a hydrodynamic torque convertor

摘要

A stator assembly comprises a set of blades 17 and a hub 21 into which fits an outer ring 31 of a freewheel 29. The hub 21 has an axial projection 39 that projects, towards a pump shell (3, fig 1) beyond an axial extent of the outer ring 31. Inwardly directed elastically deformable webs 41 are arranged at prespecified angles (a, fig 2) around a circumference of the projection 39 and have ends 43 which locate and centre a bearing, eg a needle roller bearing 45 or plain bearing (67, fig 9), and a pressure pad 47 having radial fingers (61, fig 2) which engage between the webs 41. The webs 41 may be of semi-circular or cylindrical cross-section (see figs 4 and 5). The stator is manufactured in a die and axial free faces 53 of the webs 41 act as support surfaces for an ejector to facilitate removal of the stator from the die.