Stator and torque converter

Abstract

It is an object of the present invention to inhibit generation of a vortex in the position where operating oil separates from a stator and to increase a capacity coefficient by allowing the operating oil to efficiently flow from a turbine to an impeller. A torque converter stator of the present invention is configured to regulate the flow of operating oil returning from a turbine to an impeller within a torque converter. The torque converter stator includes an annular stator shell, a plurality of stator blades and an annular stator core. The stator blades are radially extended from the stator shell. The stator blades respectively include a corrugated operating-oil outlet-side edge. The stator core is disposed on the outer peripheries of the stator blades.

1 . A torque converter stator configured to regulate flow of an operating oil returning from a turbine to an impeller within a torque converter, the torque converter stator comprising:
 an annular shell;   first and second blades configured around the annular shell and radially extending from the annular shell, the first blade extending in a first direction, the first blade including a first operating-oil outlet-side edge, the second blade including a second operating-oil outlet-side edge, the first and second blades being corrugated; and   a first annular core disposed on an outer periphery of the first blade and an outer periphery of the second blade.   
     
     
         2 . The torque converter stator recited in  claim 1 , wherein
 the first blade including a first concave being recessed in a second direction which is perpendicular to the first direction.   
     
     
         3 . The torque converter stator recited in  claim 1 , wherein
 the first blade including a first convex bulging in a third direction opposite to the second direction.   
     
     
         4 . The torque converter stator recited in  claim 1 , wherein
 a ratio of a height h to a width H is in a range of 3 to 20%, where the height h is between a tip of the first convex and a bottom of the first concave, and the width H is a length in a longitudinal direction of the first blade.   
     
     
         5 . A torque converter configured to transmit torque from an engine to a transmission via a fluid, the torque converter comprising:
 an impeller configured to receive the torque inputted from the engine;   a turbine configured opposite to the impeller, the turbine configured to output the torque to the transmission; and   a stator disposed between an inner radial part of the impeller and an inner radial part of the turbine,   the stator including:
 an annular shell, 
 first and second blades radially configured around the annular shell and extending from the annular shell, the first blade extending in a first direction, the first blade including a first operating-oil outlet-side edge, the second blade including a second operating-oil outlet-side edge, the first and second blades being corrugated, and 
   a first annular core disposed on an outer periphery of the first blade and an outer periphery of the second blade.   
     
     
         6 . The torque converter recited in  claim 5 , wherein
 the first blade includes a first concave being recessed in a second direction which is perpendicular to the first direction.   
     
     
         7 . The torque converter recited in  claim 5 , wherein
 the first blade including a first convex bulging in a third direction opposite to the second direction.   
     
     
         8 . The torque converter recited in  claim 5 , wherein
 a ratio of height h and a width H is in a range of 3 to 20%, where the height h is between a tip of the first convex and a bottom of the first concave, and the width H is a length in a longitudinal direction of the first blade.