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    • 3. 发明公开
    • REIBUNGSKUPPLUNG MIT NACHSTELLEINRICHTUNG
    • 与调节摩擦离合器
    • EP2640994A1
    • 2013-09-25
    • EP11822795.8
    • 2011-11-07
    • Schaeffler Technologies AG & Co. KG
    • ZIEFLE, Florian
    • F16D13/75
    • F16D13/75F16D13/757
    • The invention relates to a friction clutch with a back-pressure plate, which is connected fixedly to a housing so as to rotate with it, and a pressure plate, which is received by means of leaf springs such that it can be displaced axially and is fixed with respect to said back-pressure plate so as to rotate with it and which is prestressed by a disc spring to a preset operating point with friction linings clamped in between, and an adjusting device, for adjusting a changing operating point by means of a ramp ring which is distributed in the circumferential direction and over the circumference, is received on the pressure plate on complementary mating ramps of the pressure plate and is rotated by a spindle drive depending on a change in the operating point, and a sensing device which detects a change in the operating point and controls the spindle drive. In order for it to be possible to compensate for displacements of the operating point in both directions in an infinitely variable manner, the spindle drive is received fixedly on the housing and contains three shaft sections which are arranged concentrically with respect to one another and can be rotated to a limited extent with respect to the housing and with respect to one another, wherein the inner shaft section has a spindle mechanism, which drives the ramp ring, and can be rotated firmly in one rotational direction with respect to the middle shaft section and can be rotated to a limited extent in the other rotational direction counter to the action of first energy stores, and the middle shaft section and the outer shaft section which contains the sensing device with respect to the ramp ring are arranged such that they are secured against rotation with respect to the housing in each case by means of two switchable wraparound belts which are connected counter to one another.