192 clutches and power-stop control – Clutches – Operators
Patent
1984-02-21
1986-04-01
Smith, Leonard E.
192 clutches and power-stop control
Clutches
Operators
464 68, F16D 314, F16D 1364
Patent
active
045792127
ABSTRACT:
A friction clutch comprises a hub (1) and a friction lining carrier (5) mounted rotatably on the hub (1). A friction damper (27) includes a friction ring (29) between a hub disc (13) of the hub (1) and an axially adjacently arranged cover disc (9) of the friction lining carrier (5). A presser plate (33) is guided non-rotatably but axially displaceably on the friction lining carrier (5) between a further cover disc (7) of the friction lining carrier (5) and the axially opposite side of the hub disc (13). Between the cover disc (7) and the presser plate (33) a spring arrangement (37) is provided. Between the hub disc (13) and the presser plate (33) an oblique face thrust device (45, 47) is arranged which initially stresses the spring arrangement (37) in dependence upon the relative angle of rotation of the hub (1) and the friction lining carrier (5). The spring arrangement comprises two spring members (39, 41) arranged in series or parallel with one another, of which the one (41) is clamped in for every relative angle of rotation between the presser plate (33) and the cover disc (7) and determines the friction force in the idling range of the friction damper (27). The other spring member (39), which preferably has a harder spring characteristic, abuts on a stop part (cover disc 7) in the transition from the idling range to the under-load range and ensures a higher spring force in the under-load range. In the idling range this spring member (39) is lifted away from the stop part. In this way the friction force of the friction damper can be adjusted in the idling range to small spring forces, within narrow tolerances. Nevertheless high spring forces can be achieved in the under-load range.
REFERENCES:
patent: 3684070 (1972-08-01), maucher
patent: 3695405 (1972-10-01), Maucher et al.
patent: 4368812 (1983-01-01), Steeg
patent: 4398625 (1983-08-01), Beccaris
patent: 4496036 (1985-01-01), Loizeau
Fichtel & Sachs AG
Smith Leonard E.
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