Stator, motor and stator manufacturing method
A technology for stators and stator cores, applied in the manufacture of stator/rotor bodies, motor generators, magnetic circuit shape/style/structure, etc., can solve the problems of decreased configuration accuracy of iron core components, and achieve the effect of improving configuration accuracy
Active Publication Date: 2020-02-07
NIDEC CORP
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Problems solved by technology
Therefore, there is a problem that when the core member is positioned with reference to the circumferential end of the core member, the arrangement accuracy of the core member decreases.
Method used
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[0025] Hereinafter, a motor according to an embodiment of the present invention will be described with reference to the drawings. In the description below, the figure 1 The direction in which the central axis J extends is taken as the up-down direction. Will figure 1 The upper side in the axial direction of the central axis J is simply referred to as "upper side", and the lower side is simply referred to as "lower side". In addition, the up-down direction is only a name used for description, and does not limit the actual positional relationship or direction. In addition, the direction parallel to the central axis J is simply referred to as the "axial direction", the radial direction centered on the central axis J is simply referred to as the "radial direction", and the circumferential direction centered on the central axis J is simply referred to as the "circumferential direction". .
[0026] In this specification, extending in the axial direction includes not only extendi...
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In a stator according to one aspect of the present invention, a stator core is configured such that a plurality of electromagnetic steel sheets are laminated in the radial direction. The stator core has: a core columnar part extending in the axial direction, a coil being wound around the core columnar part; and a sheet-form flange part connected to an axial-direction end of the core columnar part, the flange part extending in the circumferential direction. The flange part has a widening part in which the circumferential-direction width increases from the radially inward side toward the radially outward side, and a radially extending fixed-width part of substantially fixed circumferential-direction width. The fixed-width part is configured such that a plurality of electromagnetic steel sheets of substantially fixed circumferential-direction width are laminated in the radial direction in the flange part. A plastic part has: a plastic body part, at least a portion of which being positioned between circumferentially adjacent flange parts; and a first recess part indented in the axial direction beyond the axial-direction end surface of the plastic body part and positioned between circumferentially adjacent fixed-width parts of the stator core.
Description
technical field [0001] The present invention relates to a stator, a motor and a method of manufacturing the stator. Background technique [0002] Conventionally, there is known a motor having a plurality of core members arranged in a ring shape around the axis of the rotor output shaft. For example, the core member of the electric motor disclosed in Patent Document 1 is composed of laminated steel sheets obtained by laminating electromagnetic steel sheets along the radial direction of the stator. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Laid-Open Publication No. 2011-114993 Contents of the invention [0006] The problem to be solved by the invention [0007] In the iron core member in which the magnetic steel sheets are stacked along the radial direction of the stator, the circumferential end portion of the iron core member is constituted by a plurality of circumferential end portions of the magnetic steel sheets. He...
Claims
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IPC IPC(8): H02K1/18H02K15/02H02K15/12
CPCH02K1/18H02K15/02H02K15/12
Inventor 河合良树上田智哉牧野祐辅
Owner NIDEC CORP