The camplate bearing lubricating structural null hydraulic pump of the hydraulic type

摘要

PROBLEM TO BE SOLVED: To solve the problem conventionally that hydraulic continuously variable transmission, in which lubricating oil in a housing is only guided to slide surfaces between a swash plate and a swash plate bearing through an oil passage formed in the housing or the like to a cause so large a pressing force to the bearing, when a hydraulic pump rotates at a high speed, that the supply of lubricating oil to the slide surface is stopped to generate shortage of oil film, which increases the operation force of the swash plate.;SOLUTION: In a hydraulic continuously variable transmission 5 composed of a hydraulic pump 2 and a hydraulic motor 3, in which at least either of the hydraulic pump 2 or the hydraulic motor 3 has cradle swash plates 23 and 33 which are supported by half bearings 24 and 35 to be capable of oscillating, lubricating oil fed under pressure by a charge pump 7 attached on the outside of the hydraulic continuously variable transmission 5 is supplied to the slide surfaces of at least either of the half bearings 24 and 34 and the cradle swash plates 23 and 33.;COPYRIGHT: (C)2002,JPO