Rotor unit and electric motor

The invention relates to a rotor unit for a brushless electric motor withan annular rotor core surrounding a central axis,a plurality of magnet arrangements that are arranged around the rotor core in a circumferential direction of the rotor and that each have a convex outer peripheral face, an inner...

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Bibliographic Details
Main Authors Tategata, Kazunori, Kübler, Thomas, Schmid, Jürgen
Format Patent
LanguageEnglish
Published 03.01.2023
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
GENERATION
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Summary:The invention relates to a rotor unit for a brushless electric motor withan annular rotor core surrounding a central axis,a plurality of magnet arrangements that are arranged around the rotor core in a circumferential direction of the rotor and that each have a convex outer peripheral face, an inner contact face, two axial end faces and two side faces pointing in the circumferential direction,a magnet holder having a number of holding portions which are each arranged between two adjacent magnet arrangements and are moulded onto a ring portion of the magnet holder, wherein the holding portions are configured T-shaped in a cross section along a plane running transversely to the central axis and each have a shank portion and a head portion, whereinthe shank portion lies on the side faces of the magnet arrangements in a contact region and the head portion lies on the peripheral faces of the magnet arrangements, whereinthe head portion lies on the peripheral faces in a contact area, which contact area is separated by a distance from a transition between the shank portion and the head portion.
Bibliography:Application Number: US201916978115