Torque limiting clutches for power transfer units

Details Torque limiting clutches for power transfer units Torque limiting clutches for power transfer units

F - Mech Eng,Light,Heat,Weapons

16

D

F16D 19/00 (2006.01)

Patent

CA 2641251

A power transfer unit is provided with a torque limiting assembly that limits the torque transferred to driveline components when torque peaks occur. The power transfer unit can include, a first shaft, a second output shaft receiving drive torque, a second output shaft, and a torque transfer mechanism. The torque transfer mechanism includes a coupling member and a biasing member. The coupling member is located between a driving member and a driven member and provides selective engagement therebetween when in an engaged position. The driving member and/or the driven member includes a recess therein receiving a portion of the coupling member when in the engaged position. The biasing member urges the coupling member and the driving member and/or driven member into the engaged position.

L'invention concerne une unité de transmission de puissance qui est équipée d'un ensemble limiteur de couple qui limite le couple transmis aux organes de transmission quand surviennent des pics de couple. L'unité de transmission de puissance peut comprendre: un arbre primaire, un arbre de sortie secondaire recevant le couple de transmission, un arbre de sortie secondaire et un mécanisme de transfert de couple. Le mécanisme de transfert de couple comprend un élément d'accouplement et un élément de rappel. L'élément d'accouplement est situé entre un élément menant et un élément mené et réalise un engrènement sélectif entre eux quand il est dans une position "engrené". L'élément menant et/ou l'élément mené comprennent dans leur structure un renfoncement recevant une partie de l'élément d'accouplement quand il est dans la position "engrené". L'élément de rappel pousse l'élément d'accouplement et l'élément menant et/ou l'élément mené à entrer en position "engrené".

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