Patent ID: 7185554
Filing Date: 2007-03-06
Classification: F16H,Y10T

Abstract:
1. A shifting device ( 2 ) for a multi-step transmission, with which several shift couplings arranged one behind another, each with a shifting sleeve, can alternately be engaged in each case via a shift rocker arm ( 4 , 6 , 8 , 10 ), in that first form-enclosed elements ( 30 , 32 , 34 , 36 ) are arranged on a swivelling and axially movable selector and gearshift shaft ( 24 ) in such manner that at predetermined swivel angles of the selector and gearshift shaft ( 24 ) in each case only one first form-enclosed element ( 30 , 32 , 34 , 36 ) cooperates with one second form-enclosing element ( 38 , 40 , 42 , 44 ) which is arranged on the shift rocker arm ( 4 , 6 , 8 , 10 ), and in that by means of an axial displacement of the selector and gearshift shaft ( 24 ) a first shift rocker arm ( 4 ) is actuated, while during actuation other shift rocker arms ( 6 , 8 , 10 ) are locked in a neutral position by a locking device, wherein the locking device comprises a locking sleeve ( 66 , 74 , 82 , 86 ) which is provided on the selector and gearshift shaft ( 24 ) for respective pairs of shift rocker arms ( 4 , 6 , 8 , 10 ) and is connected rotationally fast to the selector and gearshift shaft ( 24 ) but can move axially on the selector and gearshift shaft ( 24 ), and on the first and other shift rocker arms ( 4 , 6 , 8 , 10 ) there are arranged first locking means ( 50 , 52 , 54 , 56 ), which cooperate with the locking sleeve ( 66 , 74 , 82 , 86 ) and with second locking means ( 58 , 60 ) in fixed arrangement in the transmission.