Belt tensioner for motor vehicle

F - Mech Eng,Light,Heat,Weapons – 16 – H

Patent

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Details

F16H 7/12 (2006.01) F16H 7/24 (2006.01) F16H 7/08 (2006.01)

Patent

CA 2323548

A belt tensioner for a motor vehicle engine, comprises a spindle portion (18) and an eccentric pivoted structure (50) mounted for pivoted movement on the spindle portion. A rotatable pulley member (90) is mounted for rotation on the eccentric pivoted structure, and a spring (60) is constructed and arranged to bias the eccentric pivoted structure and hence the rotatable pulley member into tensioning engagement with a belt (16) trained about the pulley member. A force applying structure (28) is constructed and arranged to force the spindle portion toward the belt against a counteracting belt load force applied by the belt to the rotatable pulley. Linear guiding structure is constructed and arranged to limit movement of the spindle portion to linear movement toward the belt during application of force by the force applying structure during installation of the belt tensioner.

L'invention concerne un tendeur de courroie pour véhicule à moteur, le tendeur de courroie comprenant une partie d'axe (18) et une structure (50) pivotante excentrique montée de manière à effectuer un mouvement pivotant sur la partie d'axe. Un élément de poulie (90) rotative est monté pour tourner sur la structure pivotante excentrique et un ressort (60) est monté de manière à contraindre la structure pivotante excentrique et donc l'élément de poulie rotative dans un engagement de mise sous tension avec une courroie (16) disposée autour de l'élément de poulie. Une structure d'application de force (28) est montée de façon à pousser la partie d'axe vers la courroie contre une force contraire de charge de courroie appliquée par la courroie sur la poulie rotative. Une structure de guidage linéaire est montée de manière à limiter le déplacement de la partie d'axe en un déplacement linéaire vers la courroie lors de l'application d'une force par la structure d'application de force pendant l'installation du tendeur de courroie.

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