TOROIDAL CONTINUOUSLY VARIABLE TRANSMISSION

WIPO Patent Application WO/2014/203921

A1

In this toroidal continuously variable transmission, an input disk (15) is easily deformed as a result of the first piston (25) of a hydraulic loader (23) locally applying pressure to the second cylinder housing (15a) of the radial outer end section of the input disk (15), but deformation of the input disk (15) is reduced because the hydraulic pressure of a second oil chamber (28) evenly applies pressure to the entire back surface of the input disk (15). By switching between a first control state in which hydraulic pressure is supplied only to the second oil chamber (28) and a second control state in which hydraulic pressure is provided to both a first oil chamber (27) and the second oil chamber (28), pressure is preferentially applied to the input disk (15) by the hydraulic pressure of the second oil chamber (28), and hydraulic pressure is supplied to the first oil chamber (27) and the first piston (25) is used to apply pressure to the input disk (15) in an auxiliary manner when the hydraulic pressure of the second oil chamber (28) alone is not sufficient. As a result, it is possible to minimize the slipping of a power roller (19) while keeping deformation of the input disk (15) to a minimum.

MATSUMOTO TAKASHI (JP)
TSUBATA YOSHIMICHI (JP)
ONOMURA YASUHIRO (JP)
SATO TAKAO (JP)
TAKAYA MASATO (JP)
KOUNO TOSHIKAZU (JP)
NISHII HIROKI (JP)

PCT/JP2014/066123

December 24, 2014

June 18, 2014

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HONDA MOTOR CO LTD (JP)
NSK LTD (JP)

F16H61/12; F16H15/38; F16H61/664

JP2005127490A	2005-05-19
JP2006057649A	2006-03-02
JPS62258254A	1987-11-10
JP2002227953A	2002-08-14
JP2004278780A	2004-10-07

OCHIAI Takeshi et al. (JP)
Ochiai 健 (JP)

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