Self-setting automatic slack adjuster with increased durability

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

Patent

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Details

F16D 65/58 (2006.01) F16D 51/00 (2006.01) F16D 65/52 (2006.01)

Patent

CA 2743835

An improved self-adjusting automatic slack adjuster for reducing slack in the brake of a vehicle, in which a one-way clutch assembly is arranged in the housing of the automatic slack adjuster housing such that a thin- wall region of the housing associated with the gear drive of the one-way clutch assembly is located outside of a load path through which brake applications forces are conveyed from a brake actuator to a brake cam shaft upon which the automatic slack adjuster is located. The new positioning of the one-way clutch assembly drive results in unexpectedly lower stress levels in the automatic slack adjuster, resulting a more durable slack adjuster and permitting surprisingly large increases in slack adjuster capacity rating.

L'invention porte sur un plongeur de réglage du frein automatique à autoajustement amélioré, pour réduire le jeu d'un frein d'un véhicule, dans lequel un ensemble embrayage unidirectionnel est disposé dans le boîtier du plongeur de réglage du frein automatique de telle sorte qu'une région à paroi mince du boîtier associé à la transmission par engrenages de l'ensemble embrayage unidirectionnel est située à l'extérieur d'un trajet de charge par le biais duquel des forces d'application de freinage sont transmises d'un actionneur de frein à un arbre à came de frein sur lequel le plongeur de réglage du frein automatique est situé. Le nouveau positionnement de la transmission d'ensemble embrayage unidirectionnel conduit à des niveaux de contrainte plus faibles inattendus dans le plongeur de réglage du frein automatique, ce qui permet dobtenir un plongeur de réglage du frein dont la durée de vie est accrue, et permet des augmentations étonnamment importantes de la capacité nominale du plongeur de réglage du frein.

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