Belt type continuously variable transmission
US7753814B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2005 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Mar 18, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H55/56
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A belt type continuously variable transmission in which a pulley shaft is supported by bearings provided at two positions that are apart from each other in an axial direction of the pulley shaft and a supply oil passage for supplying hydraulic fluid to a pulley hydraulic chamber includes a radial direction oil passage that is formed in the pulley shaft, the radial direction oil passage is formed on an outside of an area between the two positions. Also, one of the bearings is provided near the radial direction oil passage and on an outer surface side of a cylinder member whose inner surface side forms the pulley hydraulic chamber for a movable sheave that is fixed to the pulley shaft. With this structure, concentration of stress on the radial direction oil passage can be avoided, and therefore strength of the pulley shaft can be secured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.