| 摘要 |
In a shifting device ( 2 ) for a multi-step transmission, several shift couplings are 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 a shift rocker arm ( 4, 6, 8, 10 ), and in that via an axial displacement of the selector and gearshift shaft ( 24 ), the appropriate shift rocker arm ( 4 ) is actuated while during its actuation, the other shift rocker arms ( 6, 8, 10 ) are locked in their neutral position by a locking device, 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 each shift rocker arm ( 4, 6, 8, 10 ), there are arranged first locking member ( 50, 52, 54, 56 ) which cooperate with the locking sleeve ( 66, 74, 82, 86 ) and with second locking member ( 58, 60 ) in fixed arrangement in the transmission. |
