US 2019/0356180 A1Published application

Rotating electrical machine

AssigneeMitsubishi Electric Corporation

InventorsMasashi Nakamura, Akihito Mori, Tatsuro Hino, Kohei Yasuda

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Abstract

A rotating electrical machine can increase the strength of divided cores and, in addition, can achieve both a reduction in iron loss and a high rigidity of the divided cores. The stator of the rotating electrical machine includes a stator core having radially divided cores arranged in a ring, each divided core being a laminate of magnetic steel sheets. Each divided core has a swaged portion in which the laminated magnetic steel sheets are bonded by swaging. The swaged portion is disposed in a core back portion, which is in contact with core back portions of divided cores located on both sides of the divided core at a position whose distance from an outer periphery of the core back portion is within ⅓ of a radial length of the core back portion.

Claims19

Dependent claims

A rotating electrical machine comprising:

a housing;
a stator fixed in the housing;
and a rotor disposed inside and opposite the stator, wherein the stator includes a stator core having radially divided cores arranged in a ring, each divided core being a laminate of magnetic steel sheets, and stator windings placed in slots each formed by two adjacent ones of the divided cores of the stator core, and wherein each divided core has at least one swaged portion in which the laminated magnetic steel sheets are bonded by swaging, the at least one swaged portion being disposed in a core back portion, which is in contact with core back portions of divided cores located on both sides of the divided core, at a position whose distance from an outer periphery of the core back portion is within ⅓ of a radial length of the core back portion.

Dependencies are inferred from the claim text.

Facts

Application: 16/260,436Filed 29 Jan 2019
Priority: JP 2018-09359915 May 2018
Published: 21 Nov 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H02K 1/165
Stator cores with slots for windings: shape, form or location of the slots
H02K 3/14
Arranged in slots: with transposed conductors, e.g. twisted conductors
H02K 3/28
Windings characterised by the conductor shape, form or construction, e.g. with bar conductors: layout of windings or of connections between windings
H02K 15/021
Of stator or rotor bodies: magnetic cores

Family

US 10,992,191 B2Related patent
US 2019/0356180 A1This patent

From the US filing history. Foreign family members aren’t listed.

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