Patent ID: 6106076
Filing Date: 2000-08-22
Classification: B60B

Abstract:
Single-nut light-alloy wheel assembly for an automotive vehicle, comprising a hub borne by the automotive vehicle, a rim and a nut for fixing the rim on the hub, wherein the hub, the rim and the nut are arranged coaxially with an axis (X) of the wheel assembly and wherein:the hub comprises:an axial pin threaded externally, anda contact surface for the rim arranged in an annular manner around the pin;the rim comprises:a contact surface for the hub, anda contact surface for the nut; andthe nut comprises:a main body including:an axial internal threading for engagement with the treaded pin of the hub, anda driving head for rotating operation;an annular contact body assembled with play on the main body and having a contact surface for the rim;a friction reduction bearing placed between the main body and the contact body to give mutual rotation freedom between the main body and the contact body, thus allowing the contact surface of the rim for the nut and the contact surface of the nut for the rim to not rotate against each other during rotation of the nut; andan elastic ring in engagement in respective grooves formed on the main body and on the contact body, to have the contact body permanently locked axially on the main body.