MOTOR FRAME AND MOTOR DEVICE

WIPO Patent Application WO/2024/048137

A1

The present invention is a motor frame that makes uniform the distribution of stress applied to a stator which is fitted therein. A stator (21) of a motor (2) is fitted into a cylindrical main body (30) of a motor frame (3) and penetrates in the direction in which an axis (20) of a rotation shaft (23) of the motor (2) extends. The stator (21) has a plurality of stator segments (6) that are split in the circumferential direction of the rotation shaft (23). A wall thickness t is defined as the thickness of the cylindrical main body (30) in the inside-outside direction orthogonal to the direction in which the axis (20) extends. An angle θ is defined as the angle of any point of the cylindrical main body (30) from a reference line around the axis (20) when viewed from the direction in which the axis (20) extends. t=f(θ) is a thickness function. A part of an inner wall surface (5) which has an angle that takes the minimum value of a waveform of a fourth-order component when the thickness function is subjected to Fourier series expansion is a midportion contact part with which midportions of the plurality of stator segments (6) in the circumferential direction of the rotation shaft (23) come into contact.

SHIMOKAWA TOMOYA
MATSUSHITA YASUAKI
ASO NORITAKA
SUZUKI KENTA

PCT/JP2023/027217

March 07, 2024

July 25, 2023

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PANASONIC IP MAN CO LTD (JP)

H02K5/04; H02K1/18; H02K3/46

WO2005025037A1

2005-03-17

JP2005080416A	2005-03-24
JP2015061385A	2015-03-30

KAMATA Kenji et al. (JP)

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