ELECTRICAL MACHINE

摘要

An electrical machine, in particular an electric motor, comprising a rotor, which has a laminated core comprising stacked laminating sheets having at least two tangentially extending holes, in each of which at least one permanent magnet is at least largely accommodated, at least one laminating sheet having at least one elastic arm, which is arranged between the at least two permanent magnets and lies against a permanent magnet and resiliently acts on said permanent magnet substantially in a tangential direction.

主权项

1. An electrical motor having a rotor, the rotor comprising:
a laminated core made up of a stacked plurality of laminating sheets each having an external ring and a core area; each laminating sheet having at least two tangentially extending slots, in each of which at least one permanent magnet is accommodated; and at least one of the laminating sheets has at least one elastic arm which is arranged between the at least two permanent magnets and lies against a permanent magnet and acts resiliently upon the permanent magnet in an essentially tangential direction, wherein the elastic arm of the one laminating sheet, with a first area of its axial surface, makes two-dimensional contact with a contact area of a further adjacent laminating sheet and is guided essentially tangentially in a manner that resists torsion and/or bending, that the elastic arm with a further area of the same axial surface cannot make contact on the same further laminating sheet thus defining a non-adjacent area, and that the elastic arm is substantially deformed by the permanent magnet in the tangential direction and rests elastically against the permanent magnet.