| 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 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.
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