Linear tensioner

Details Linear tensioner Linear tensioner

F - Mech Eng,Light,Heat,Weapons

16

H

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

Patent

CA 2438759

A tensioner having a base (2), a spring (1) connected to the base (2) biases a plate (4), having a pulley (7), toward a belt. Frictional blocks (9, 10) are aligned on the base (2) in a staggered fashion along a spring (1) centerline. The plate (4) slidingly moves in a linear path between the blocks (9, 10). The blocks (9, 10) constrain the path of the plate (4) allowing movement in only a single axis parallel to a spring (1) axis. A hubload from a belt running on the pulley (7) combined with the spring (1) force acting on the plate (4) cerates a force couple acting on the plate (4) through the frictional blocks (9, 10). The engaging surfaces between the plate (4) and the blocks (9, 10) have e predetermined coefficient of friction thereby creating a damping force as the pulley (7) and plate (4) move in a linear path on the blocks(9, 10).

Un tendeur possède une base (2), et un ressort (1) relié à la base (2) sollicite une plaque (4) muni d'une poulie (7) en direction d'une courroie. Des blocs de frottement (9, 10) sont disposés en quinconce sur la base (2) le long d'une ligne médiane du ressort (1). La plaque (4) se déplace coulissante selon un trajet linéaire entre les blocs (9, 10). Ces blocs (9, 10) limitent la course de la plaque (4) en ne permettent le mouvement que le long d'un axe unique parallèle à celui du ressort (1). Une charge sur le moyeu provenant d'une courroie se déplaçant sur la poulie (7), combinée à l'énergie du ressort (1) qui agit sur la plaque (4) créent un couple de force agissant sur la plaque (4) à travers les blocs de frottement (9, 10). Les surfaces qui se mettent en prise entre la plaque (4) et les blocs (9, 10) ont un coefficient de frottement prédéterminé, ce qui crée une force d'amortissement à mesure que la poulie (7) et la plaque (4) se déplacent en suivant un trajet linéaire sur les blocs (9, 10).

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