Toroidal continuously variable transmission
US6248039A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 22, 1999 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Jun 22, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H15/38
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An input disk (19) of a toroidal continuously variable transmission (19) is connected to a rotation shaft (3) via a ball spline structure. Plural power rollers gripped between the input disk (19) and an output disk (20) are disposed at a predetermined angular interval around the rotation shaft (3). A group or groups of spline units (21) forming the ball spline structure respectively comprise pairs of spline grooves (21A) and balls (21B) held inside these grooves. The input disk (19) exerts a thrust load on the power rollers (30) and their reaction force causes the input disk (19) to deform. By forming the ball spline structure from a group or groups of the spline units (21) in which the spline units (21) are disposed at the same angular interval as the power rollers (30),this deformation is prevented from causing the rotation shaft to suffer rotational vibration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.