| 摘要 |
An automatically engageable synchronous jaw clutch with hydraulic engagement-servo device, comprising a respective toothed drive and power take-off clutch half and a clutch star, which is guided to be axially displaceable by means of a first gear-tooth system upon one of the toothed clutch halves and can be engaged, by means of a second gear-tooth system, with the other clutch half. A screw socket controls, during clutching or engagement, the clutch star. This screw socket is in meshing engagement, by means of a pair of coarse-pitch thread means with one of the clutch halves and can be coupled, by means of a pawl blocking device with the other clutch half. The engagement-servo device contains a piston which entrains the clutch star, and the displacement of the piston, initiated by the screw socket, controls an infeed channel leading to a servo cylinder chamber of the servo device, in order to hydraulically augment the engagement of the clutch. The engagement device is structured as a servo follow-up control wherein the piston as a follow-up piston, when hydraulically loaded or impinged, follows a sliding displacement of the leading screw socket which is axially movable to a limited degree relative to the clutch star and to the piston and opens and closes the infeed channel to the servo cylinder chamber by means of a control groove provided at the piston.
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