Patent ID: 11938754
Assignee: FCA ITALY S.P.A.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC B  F | IPC B

Claim 4:
5. A method for assembling a motor-vehicle wheel assembly comprising the following steps:
providing a support unit to support a motor-vehicle wheel, comprising a wheel hub, a wheel upright, and a brake disc,
centering the wheel on the wheel hub, so that the axis of the wheel coincides with the axis of the hub,
providing an anti-loosening device according to claim 1,
inserting said anti-loosening device inside said wheel hub along an axial direction, in such a way that a main axis of the anti-loosening device coincides with the wheel axis, said outer teeth cooperate with inner teeth of the wheel hub, the elastic element is spaced within said wheel hub, and said second end of the elastic element is engaged against at least one abutment and centering surface obtained inside the wheel hub,
fixing a single-nut fastening unit on said wheel hub to lock the wheel onto the wheel hub, said single-nut fastening unit having a central hole, so that in the assembled condition of the wheel assembly, a part of the outer surface of the gear is visible from the outside despite the engagement of said single-nut fastening unit on said wheel hub,
applying pressure on said gear along an axial direction, so as to compress said elastic element and create a compressed configuration of the anti-loosening device, wherein the gear is decoupled with respect to said inner teeth of the wheel hub and is arranged within a cavity portion formed on the inner surface of the wheel hub, so as to allow rotation of the anti-loosening device around said main axis,
rotating said anti-loosening device around said main axis to position the coupling element in a radially aligned position with respect to a respective anti-rotation sector obtained on the single-nut fastening unit,
releasing said gear, and allowing said elastic element to elastically recall the gear into its position wherein said outer teeth cooperate with said inner teeth of the wheel hub,
tightening a fastening member inside said coupling element, in such a way that said fastening member coupled to said coupling element obtained on the gear cooperates with said anti-rotation sector, to avoid loosening of the locking unit.