| 摘要 |
A friction wheel drive, especially for driving an auxiliary unit of an internal combustion engine in a frictionally engaging manner is provided. The friction wheel drive includes an adjustable friction wheel ( 3, 3' ) which can be pressed at least against a contact disk ( 7, 9 ) of an output member ( 8 ) and/or an input member ( 10 ). In order to create a particularly simple, mechanically operating friction wheel ( 3, 3' ), the friction wheel is provided with a running disk ( 5 ) which is mounted on a rolling bearing ( 19 ) that is fixed to the engine. The running disk ( 5 ) includes a tapered annular groove ( 24 ) having a width that can be varied by axially movable, spring-force impinged sidewalls ( 21 ). Further, a friction ring ( 4, 4' ) having a diameter that is larger than that of the tapered annular groove ( 24 ) is inserted into the groove such that the friction ring ( 4, 4' ) is disposed eccentric to the same, is guided in a radially movable fashion, and is spring mounted.
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