F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
F16H 7/12 (2006.01) F16H 7/08 (2006.01)
Patent
CA 2368985
A tensioner (10) for an endless belt comprising a stationary structure on which a pivotal tension arm (13) with an idler pulley (11) is mounted. A spring (15) between the tension arm and the stationary structure (16) acts to bias the pulley (11) against the belt, thereby applying tension. The invention includes a one-way device that is operable in response to the extent of pivotal movement of the tension arm (13) in the forward direction to establish different positions at which pivotal movement in the return direction is limited. A damping system (44) is used to restrict pivotal movement of the tension arm (13) as a result of sudden short-time vibratory movements or dynamic vibrations in cold conditions.
L'invention concerne un tendeur (10), destiné à une courroie sans fin, qui comprend une structure fixe sur laquelle est monté un bras de tension (13) rotatif pourvu d'une poulie de renvoi (11). Un ressort (15) situé entre le bras de tension (13) et la structure fixe (16) sollicite la poulie (11) contre la courroie, et applique ainsi une tension. L'invention concerne un dispositif unidirectionnel utilisable en réponse à l'étendue du mouvement rotatif du bras de tension (13) dans un sens, afin d'établir différentes positions dans lesquelles le mouvement rotatif en sens inverse est limité. Un système d'amortissement (44) est utilisé afin de resteindre le mouvement rotatif du bras de tension (13) suite à des mouvements vibratoires soudains de courte durée ou à des vibrations dynamiques dans des conditions à froid.
Frankowski Marek
Lehtovaara Jorma J.
Lipowski K. Mats
Stepniak Jacek
Imai Jeffrey T.
Litens Automotive
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