Improved multi-plate clutch

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

Patent

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F16D 13/52 (2006.01)

Patent

CA 2604391

A multi-plate clutch includes a plurality of friction plates that are rotationally coupled to a concentric shell wherein keys radially extending from each friction plate are slidably received in axial channels formed in the interior surface of the shell. The keys of all but one of the friction plates are dimensioned to have a relatively loose fit in the channels while the keys on a single friction plate are dimensioned to have a substantially tighter fit in the channels. This has a stabilizing effect on the entire stack without impeding the operation of the clutch. Rotational stabilization of the plates serves to dampen the impact of the edge of each of the keys of each of the plates against the channel sidewall during abrupt load changes in the drivetrain to thereby reduce wear and the generation of noise.

La présente invention concerne un embrayage multidisque qui comprend une pluralité de disques de friction qui sont couplés de façon rotative à une coque concentrique, des clavettes s~étendant de façon radiale à partir de chaque disque de friction étant reçues par de façon coulissante dans des gorges axiales formées dans la surface intérieure de la coque. Les clavettes de tous les disques de friction, sauf un, sont dimensionnées de manière à présenter un ajustement relativement libre dans les gorges tandis que les clavettes sur un disque de friction unique sont dimensionnées de manière à présenter un ajustement sensiblement plus serré dans les gorges. Un effet stabilisant est ainsi obtenu sur toute la pile sans gêner le fonctionnement de l~embrayage. La stabilisation de rotation des disques sert à amortir l~impact des bords de chacune des clavettes de chaque disque contre la paroi latérale de gorge au cours de brusques changements de charges dans la transmission pour ainsi réduire l~usure et le bruit.

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