Patent ID: 8517873
Filing Date: 2013-08-27
Classification: F16H

Abstract:
1. Tensioning device comprising: 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 end 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, the damping device comprises a first friction surface element that is arranged in a region of a first winding end section of the torsion spring allocated to the swivel arm and forms as such a first friction surface that is used for applying a friction force and sits on a first counter friction surface, in a region of the second winding end of the torsion spring allocated to the base part, there is a second friction surface element that forms a second friction surface that sits on a second counter friction surface, and the second counter friction surface is formed by a friction surface structure that can pivot together with the swivel arm, wherein a radial opening is formed in the base part and the second friction surface element projects from inside through the opening onto the friction surface structure.