Decoupling device for mounting a shaft on a base and radial ondular washer
View Patent ↗A decoupling device for the bearing arrangement of a shaft carried in a housing, in particular a shaft of a belt-driven conical-pulley transmission with a chain that functions as the belt. The decoupling device includes an outer bearing ring configured with a circularly cylindrical outer surface and within which the shaft is mounted, and an inner surface of a housing that encloses the bearing ring outer surface. At least one radial ondular washer is arranged between the bearing ring outer surface and the housing inner surface, which allows a limited relative radial movement between the housing inner surface and the bearing ring outer surface by elastic deformation of the washer.
1. A decoupling device for a bearing arrangement for rotatably supporting a shaft in a housing, said decoupling device comprising
an outer bearing ring configured with a circularly cylindrical outer surface, within which bearing ring the shaft is rotatably mounted,
a housing inner surface that surrounds the bearing ring outer surface,
wherein at least one elastically deformable radial ondular washer is positioned between the bearing ring outer surface and the housing inner surface and which ondular washer allows a limited relative radial movement between the housing inner surface and the bearing ring outer surface, wherein the ondular washer includes circumferentially-spaced inner and outer support humps defined by respective washer material radial thickness increases, wherein the inner support humps are in constant contact with the bearing ring outer surface and the outer support humps are in constant contact with the housing inner surface, wherein the radial ondular washer includes inner stop humps that are spaced from the bearing ring outer surface and outer stop humps that are spaced from the housing inner surface, and wherein the stop humps are radially opposite to respective support humps.
2. The decoupling device of claim 1 , wherein at least two radial ondular washers are arranged at intervals axially side by side, between which a stop ring is configured in such a way that, after a predetermined radial relative movement between the outer surface and the inner surface, it comes into contact with the inner surface and the outer surface and prevents a further radial relative movement.
3. The decoupling device of claim 1 , wherein heights of the stop humps differ in such a way that, in the event of a radial displacement of the outer surface relative to the inner surface, several stop humps, which are spatially separated from each other in the peripheral direction, come into contact with the outer surface or the inner surface.
4. The decoupling device of claim 1 , wherein the radial ondular washer is formed by spring segments that extend over parts of the periphery of the inner surface or the outer surface.