Torque converter device

A torque converter device having an input unit comprising a front cover main body and an outer circumferential part, an impeller having a shell, an outer circumference of said shell being fastened to said outer circumferential part of said input unit, a turbine located axially between said front cover main body and said impeller, said turbine being fixed to a turbine hub, a directly coupled clutch for selectively coupling to said outer circumferential part of said front cover with said turbine hub, hydraulic piston means disposed in a groove provided in an outer circumferential portion of said front cover main body for engaging and disengaging said friction directly coupled clutch, an output clutch disposed axially between an inner circumferential part of said turbine and an inner circumferential part of said front cover main body in a space filled with working fluid radially inside of said directly coupled clutch, said output clutch being composed of a multi-disc friction clutch and having an output unit and an input unit, an output disc of said directly coupled clutch and said turbine hub being linked to said input unit of said output clutch, and said output unit of said output clutch being linked to an output shaft.