Honda Giken Kogyo Kabushiki Kaisha

Honda Motor Co., Ltd.

Nsk Corporation

Toshihiro Saito

Takemasa Okano

Hiroki Nishii

Kota Fukuda

Toshirou Toyoda

Fletching wear caused by elastic deformation in the axial direction of an input-side diskdue to thrust force of a pressure device is prevented. A female-spline sectionformed around the middle section in the axial direction of the inner-circumferential surface of a center holein the input-side diskand a male-spline sectionformed around the outer-circumferential surface of one end section in the axial direction of an input rotating shaftengage with a spline engagement. A disk-side fitting surface sectionformed around a portion of the inner-circumferential surface of the center holein the input-side diskthat is adjacent to the other end side of the female-spline sectionand a shaft-side fitting surface sectionformed around a portion of the outer-circumferential surface of the input rotating shaftthat is adjacent to the other end side of the male spline sectionare fitted together with an interference fit.

Toroidal continuously variable transmission

A belt type continuously variable transmission includes a drive pulley having a fixed pulley half and a movable pulley half; a driven pulley having a fixed pulley half and a movable pulley half; and a metal belt. The metal belt includes a metal ring assembly having a plurality of endless metal rings laminated on one another and a plurality of metal elements supported on the metal ring assembly. The metal belt is wound around the drive pulley and the driven pulley. The movable pulley half of the drive pulley has a flexural stiffness higher than that of the fixed pulley half of the drive pulley, wherein it is difficult for the edges of the metal ring assembly to contact the metal elements and a V-face of the drive pulley.

Belt type continuously variable transmission

The rigidity of a movable pulley half is enhanced by the rigidity of a cylinder fixed to a back surface of the movable pulley half and influences of a controlled hydraulic pressure and a centrifugal hydraulic pressure which are exerted in a hydraulic fluid chamber partitioned in the cylinder. On the other hand, an annular protruding portion having detection teeth for a rotation sensor is formed on a back surface of an outer circumferential portion of a fixed pulley half, whereby the difference in rigidity between both the pulley halves is reduced by the effect of the annular protruding portion to improve the rigidity of the fixed pulley half, thereby making it possible to allow the variation characteristics of a misalignment relative to a drive ration to approach a characteristic set in advance.

Growing community of inventors

Saitama, Japan

Toshihiro Saito