Tensioning and damping device for traction-mechanism drives
US8517873B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2009 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Jun 6, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2007/084
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A tensioning device for a traction mechanism drive for a belt drive that is incorporated in an internal combustion engine, in order to drive components of the engine or installed accessories. The tensioning device has a construction that is advantageous under production and construction viewpoints, by a high degree of robustness, and also by an advantageous mechanical operating behavior. The tensioning device includes a base part, a swivel arm, a torsion spring with a first winding end section that is allocated to the swivel arm and a second winding section that is allocated to the base part for applying a pivoting moment acting between the base part and the swivel arm and forcing the swivel arm in a tensioning direction, and a damping device for generating a damping force that counteracts a pivoting of the swivel arm directed against the tensioning direction. This damping device includes a first friction surface element that is arranged in a region of the winding end section of the torsion spring allocated to the swivel arm, and forms a friction surface that is used for applying friction force and that sits on a counter friction surface. In the region of the second winding end of …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.