Patent ID: 6066058
Filing Date: 2000-05-23
Classification: F16H

Abstract:
An automatic transmission having a continuously variable transmission, a lock-up clutch, a reverse brake and a torque converter including a torque converter case driven by an engine, a pump impeller integrally coupled with said torque converter case, a turbine runner driven by said pump impeller through working fluid and a stator provided between said pump impeller and said turbine runner, comprising:an input shaft provided at the center of said torque converter for transmitting a driving force from said torque converter to said transmission;a stator shaft provided around said input shaft;a stator hub provided being offset on the side of said pump impeller for mounting said stator;a forward clutch adjacent to said turbine runner connected with said turbine runner;a brake cylinder case interposed between said stator hub and said stator shaft in an overlapping manner concentrically, and being provided in an inner diameter portion of said torque converter;a brake drum of said reverse brake connected with said brake cylinder case;a ring gear;a brake plate provided between said brake drum and said ring gear;a brake piston slidably movably in said brake cylinder case for operating said brake plate;a return spring for biasing said brake piston;a sun gear integrally coupled with said input shaft;a planetary carrier including an outer member and an inner member arranged in the radial direction and said outer member connected with said turbine runner so as to form a rotating axis of said turbine runner;a planetary gear meshing with said sun gear and said ring gear between and rotatably connected with said planetary carrier being interposed between said outer and inner members of said planetary carrier;a stator supporting shaft integrally formed on the opposite side of said brake piston with said brake cylinder case; anda one-way clutch interposed between said stator hub and said stator supporting shaft, while being offset on the side of said pump impeller.