Patent ID: 9077229
Filing Date: 2015-07-07
Classification: H02K

Abstract:
1. A rotating electrical machine comprising: a casing; a machine stator attached to the casing; a machine rotor positioned in the machine stator on a machine shaft, the shaft defining a rotation axis of the machine, wherein the machine shaft is mounted on one side of the machine rotor, in a rotation bearing secured axially on the machine shaft and centered in a bearing surface connected to the casing, and wherein the machine rotor is insertable into the casing by a relative movement between the machine stator and the machine rotor parallel to the rotation axis of the machine; an internal passageway in the casing, the internal passageway being traversed by an extension of the machine shaft beyond the rotation bearing; a resolver including a resolver rotor having an external diameter that is smaller than a diameter of the internal passageway, wherein the resolver rotor is attached to the extension of the machine shaft and is insertable into a cavity of a resolver stator via the relative movement, such that when the resolver rotor is inserted into the cavity of the resolver stator a resolver air gap is present between radial walls facing the resolver rotor and the resolver stator; and a centring interface between the rotation bearing of the machine shaft and the supporting surface in the casing, wherein a distance D wherein the external radial wall of the bearing, on a side corresponding to the free end of the extension of the machine shaft, has a first sector suitable for coming into contact with a second sector in the internal radial wall of the supporting surface of the rotation bearing on a side corresponding to the machine stator in the casing, and wherein at least one of the first and second sectors is profiled with a diameter that decreases axially in the longitudinal direction going from the machine rotor and the machine stator to the resolver.