| 摘要 |
In a coupling (6) for locking a differential gear for a vehicle, a movable half (60) of the coupling is pushed directly by a sliding sleeve (70) and intermediate elements (77) in the direction of closing. The sliding sleeve (70) then maintains the intermediate elements (77) in a locked position between a supporting surface (64) of the movable half (60) and an axially stationary retaining surface (4), by means of a locking surface (74). Driving surfaces (52, 62) of coupling teeth (51, 61) of an axially stationary half (50) and of the movable half (60) make an angle of deflection with the axial direction. The supporting surface (64) and the retaining surface (4) make a wedge angle (65). The locking surface (74) of the sliding sleeve (70) is inclined at a small angle to the axial direction. To open the coupling (6), the sliding sleeve is (70) pulled away. As a result of the angle (55) of deflection, a torque produces an axial deflecting force which then opens the coupling (6). As a result of the wedge angle (65), the intermediate elements (77) are pushed out of their locking position. A small retaining force and a small release force on the sliding sleeve are sufficient to hold the coupling (6) closed and to open it against the maximum torque. |
