HYDRAULIC POWER TRANSMISSION AND ITS JOINING METHOD

WIPO Patent Application WO/2008/023838

A1

In a hydraulic power transmission where a turbine shell and a turbine hub are welded together, strength at a welded portion must be taken into account because the turbine shell displaces to the pump blade side as the torque is transmitted. The hydraulic power transmission (10) comprises an input side rotary element (A) including a pump blade (18) and coupled with an input member, and an output side rotary element (B) including a turbine shell (22) to which a turbine blade (21) opposing the pump blade (18) is fixed and a turbine hub (15) coupled with an output member (1), wherein the inner circumferential end of the turbine shell (22) is welded to the turbine hub (15). The turbine shell (22) and the turbine hub (15) respectively have abutting faces (23, 24) extending along the rotary axis (10a) of the hydraulic power transmission (10), and a joint (14) is formed by welding on those portions of the abutting faces (23, 24) on the side closer to the pump blade (18).

YAMASHITA TOSHIYA (JP)
HATTORI YUJI (JP)
YANAGIDA TOMOAKI (JP)

PCT/JP2007/066822

February 28, 2008

August 23, 2007

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TOYOTA MOTOR CO LTD (JP)
YAMASHITA TOSHIYA (JP)
HATTORI YUJI (JP)
YANAGIDA TOMOAKI (JP)

F16H41/24; F16H41/28; F16H45/02

JP2000154863A	2000-06-06
JP2003336719A	2003-11-28
JP2001514366A	2001-09-11
JPH07248053A	1995-09-26
JPH05126232A	1993-05-21

TANI, Yoshikazu et al. (Akasaka 2-chome Minato-k, Tokyo 52, JP)

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