Tensioner with adjustable biasing force of a traction member

US7226377B2 · kind B2 · utility

Assignee

• Ina Schaeffler KG · DE

Inventors

• Manfred Kraus · Kehl, DE
• Michael Bogner · Eckental, DE

Key dates

• Filing date: Mar 22, 2004
• Grant date: Jun 5, 2007
• Expiry date: Mar 18, 2025

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2007/0887
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A tensioner for a traction member, in particular a belt of a traction drive for an internal combustion engine, includes a base constructed for rotation about a rotation axis and having a pivot arm. The pivot arm has a free end for connection of a rotatable tension roller which bears against a traction member. A spring member urges the pivot arm to seek a forced engagement of the tension roller upon the traction member. Disposed between the base and the pivot arm is a damping element for damping an adjusting movement of the pivot arm. A pivot bearing supporting one portion of the base on a machine part for rotation about the rotation axis, whereby the rotation of the base in relation to the machine part is realized by an actuator to thereby adjust a biasing force of the traction member.