Switchable free-wheel device for a transmission, particularly for a crank-CVT of a motor vehicle
US8579096B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 19, 2011 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Oct 28, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H29/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A switchable free-wheel device for a transmission for a crank-driven CVT of a motor vehicle. The device includes at least one free-wheel unit with a drivable outer ring, an inner ring in the form of an output shaft, and clamping bodies disposed between the rings and rotatable about their longitudinal axes. In the axial direction, each of the clamping bodies includes first and second grooves that are axially spaced from each other and offset relative to each other in the peripheral direction of the clamping body. Annular worm springs surrounding the clamping bodies are displaceable in the axial direction of the body by a switching mechanism, such that the springs engage either in the first groove or in the second groove. The clamping body rotates about its longitudinal axis such that the force applied by the worm spring runs on a side of the longitudinal axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.