Planetary transmission with a displaceable coupling element...

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

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F16H 63/30 (2006.01)

Patent

CA 2545290

The invention relates to a planetary gearbox (1) comprising a sliding coupling element (15) which is used to actuate the planetary gearbox, wherefore a selector fork (20) displaced by an actuator (2) is provided. In order to obtain a precise and simple actuation, the selector fork comprises an element that engages in a groove of the gate (23). Said groove (30) has a V-shaped cross-section with inclined lateral walls (36, 7), and the element (32) of the selector fork (20) is pressed into the groove (30) by a spring (35). The gate (23) is a cylindrical gate roller rotated by an engine (27).

L'invention concerne un train planétaire (1) comportant un élément de couplage coulissant (15) servant à l'actionnement du train planétaire, une fourchette de boîte de vitesses (20) déplacée par un actionneur (2) étant destinée à cet effet. Pour un actionnement précis et simple, la fourchette de boîte de vitesses comporte un élément s'encastrant dans une rainure de la coulisse (23). Cette rainure présente une section transversale en forme de V et des parois latérales inclinées (36, 37), et l'élément (32) de la fourchette de boîte de vitesses (20) est comprimé dans la rainure (30) par un ressort (35). La coulisse (23) se présente sous la forme d'un cylindre de coulisse entraîné en rotation par un moteur (27).

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