Belt tensioner

Details Belt tensioner Belt tensioner

F - Mech Eng,Light,Heat,Weapons

16

H

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

Patent

CA 2499382

The invention is an improved power transmission belt tensioner of the type having a first pulley (34) adapted to communicate with a surface of a power transmission belt (24), a first arm (42) supporting the first pulley (34) upon which the first pulley (34) is rotatably mounted via a first pulley bearing (40), a second pulley (35) adapted to communicate with a surface of the power transmission belt (24), a second arm supporting the second pulley (35) upon which the second pulley (35) is rotatably mounted via a second pulley bearing. It is improved by the inclusion of a strut (36), a first attachment point (68) for the strut (36), and a second attachment point (70) for the strut (36), with the strut (36) attached to the first (68) and the second attachment points (70). The first arm (42) is rotatably supported at a first pivot (44). The second arm is rotatably supported at a second pivot. The first pulley (34) and the first attachment point (68) are each laterally offset in relation to the first pivot (44) and substantially balanced in terms of parasitic torque across the first pivot (44).

L'invention concerne un tendeur de courroie amélioré pour transmission de puissance qui présente une première poulie (34) conçue pour communiquer avec une surface d'une courroie de transmission (24), un premier bras (42) soutenant la première poulie (34) sur lequel ladite première poulie (34) est montée rotative par le biais d'un premier roulement de poulie (40), une seconde poulie (35) conçue pour communiquer avec une surface de la courroie de transmission (24), un second bras soutenant la seconde poulie (35) sur lequel ladite seconde poulie (35) est montée rotative par le biais d'un second roulement de poulie. Ce tendeur de courroie est perfectionné au moyen d'une barre (36), d'un premier point de fixation (68) de la barre (36) et d'un second point de fixation (70) de la barre (36), ladite barre (36) étant fixée sur les premier (68) et second (70) points de fixation. Le premier bras (42) est soutenu rotatif au niveau d'un premier pivot (44). Le second bras est soutenu rotatif au niveau d'un second pivot. La première poulie (34) et le premier point de fixation (68) sont respectivement et latéralement décalés par rapport au premier pivot (44) et sensiblement équilibrés en termes de couple parasite de part le premier pivot (44).

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