Belt tensioner

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

Patent

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Details

F16H 7/12 (2006.01)

Patent

CA 2627750

The aim of the invention is to improve a belt tensioner for a belt drive of an internal combustion engine, having a central bearing device which serves to define a pivot axis for the belt tensioning arm, and having a bearing sleeve which is connected to the tensioning arm, wherein the bearing device extends through the bearing sleeve and the bearing sleeve is mounted, in a friction- damping manner by means of a plain bearing arrangement, so as to be pivotable about the bearing device, with said improvement being such that a good function of the belt tensioner is maintained despite a simplification of the design and a reduction in differently designed parts. Said problem is solved by means of a generic belt tensioner for a belt drive of an internal combustion engine, in which the plain bearing arrangement has at least two opposite sliding faces which have the same material.

L'invention a pour objet d'améliorer un tendeur de courroie pour l'entraînement par courroie d'un moteur à combustion interne, le tendeur de courroie présentant un dispositif central de montage qui définit un axe d'inclinaison du bras de tension de la courroie et une douille de palier reliée au bras de tension, le dispositif de palier s'étendant à travers la douille de palier et la douille de palier pouvant pivoter autour du dispositif de palier en étant amortie par frottement au moyen d'un système d'éléments coulissants, malgré une simplification de la structure et une réduction du nombre de pièces différentes, tout en conservant le bon fonctionnement du tendeur de courroie. Cet objet est réalisé avec un tendeur de courroie de type générique pour l'entraînement par courroie d'un moteur à combustion interne dans lequel le système d'éléments coulissants présente au moins deux surfaces de coulissement opposées comportant le même matériau.

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