Friction pair for clutch element in synchronization device for switching gear wheels in toothed wheel change gear box in vehicle, has friction partner provided as metal, and other partner comprising friction element, which is based on resin

摘要

The pair has a friction partner provided as a ferrous metal with hardness that ranges between 180 and 350 Vickers harness, and other friction partner comprising friction element, which is based on phenolic resin or paper. A friction ring (3) is arranged between synchronizers (1, 2) for establishing frictional connection to produce synchronism between synchronizers. The synchronizers and/or the friction ring comprise conical friction surfaces (4-7), which represent an unimpaired or segmented annular surface. The synchronizers are designed as synchronous- outer and inner rings.