Tensioner with self-limiting angular stroke

Details Tensioner with self-limiting angular stroke Tensioner with self-limiting angular stroke

F - Mech Eng,Light,Heat,Weapons

16

H

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

Patent

CA 2354273

A tensioner for tensioning engine driven driving elements, such as belts or chains, is disclosed. In accordance with one aspect of the invention, the tensioner is initially installed with the pivot struc-ture spaced past the perpendicular angular position thereof. In accordance with another aspect of the in-vention, the tension required to move the pivot struc-ture to the end of its range of angular positions is at least 30 % more than at the hot engine angular po-sition thereof. In accordance with another aspect of the invention, the tensioner has a stop at the maxi-mum travel position thereof and the tension required to move the pivot structure to its maximum travel position is at least 30 % more than at the hot engine angular position thereof. In accordance with a still further aspect of the invention, the tension required to move the pivot structure to a potential tooth skip angular position is greater than the maximum tension the engine is capable of creating.

Dispositif de tension servant à tendre des éléments d'entraînement motorisés, tels que des courroies ou des chaînes. Selon un aspect de l'invention, la structure de pivotement de ce dispositif est initialement placée à distance de sa position angulaire perpendiculaire. Selon un autre aspect de l'invention, la tension nécessaire pour déplacer la structure de pivotement vers l'extrémité de sa plage de positions angulaires est d'au moins 30 % supérieure à sa position angulaire avec le moteur chaud. Selon un autre aspect de l'invention, ce dispositif de tension possède une butée d'extrémité de course et la tension nécessaire pour déplacer la structure de pivotement jusqu'à sa position maximum de course est d'au moins 30 % supérieure à sa position angulaire avec le moteur chaud. Selon encore un autre aspect de l'invention, la tension nécessaire pour déplacer la structure de pivotement jusqu'à une position angulaire potentielle de passage de dent est supérieure à la tension maximum que le moteur est capable de créer.

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