Rotating electrical machine and producing method of rotating electrical machine
AssigneeKabushiki Kaisha Yaskawa Denki
InventorsTakeo Suzuki, Kenichi Hirata, Hiroshi Koga, Motomichi Ohto, Yosuke Shirozu
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Abstract
A rotating electrical machine includes a frame, and a stator core fixed to an inner peripheral surface of the frame and including a plurality of split cores disposed in a peripheral direction. Each of the plurality of split cores includes a groove disposed along an axial direction on a central position in the peripheral direction on an outer peripheral surface of the split core, and a first protrusion disposed on a bottom of the groove and protruding outward in a radial direction.
Claims8
A rotating electrical machine comprising:
- a frame;
- and
- a stator core fixed to an inner peripheral surface of the frame and comprising a plurality of split cores disposed in a peripheral direction, each of the plurality of split cores comprising:
- an outer peripheral surface contacting the inner peripheral surface of the frame,
- a groove disposed along an axial direction on a central position in the peripheral direction on the outer peripheral surface;
- and
- a first protrusion disposed on a bottom of the groove and protruding outward in a radial direction,
- wherein the groove comprises two side surfaces facing each other in the peripheral direction,
- wherein a groove width between the two side surfaces in the peripheral direction decreases inward in the radial direction,
- wherein the groove comprises two second protrusions contacting the inner peripheral surface of the frame and protruding in a mutually approaching direction from an outer end portion of each of the two side surfaces in the radial direction such that a contact area between the inner peripheral surface of the frame and the outer peripheral surface of the split core increases,
- wherein the groove comprises two first notches respectively disposed between the first protrusion and the two side surfaces,
- wherein each of the two first notches is formed to be an acute angle,
- wherein the groove comprises two second notches respectively disposed between the two side surfaces and the two second protrusions, and
- wherein each of the two second notches is formed to be an acute angle.
A rotating electrical machine, comprising:
- a frame;
- and
- a stator core fixed to an inner peripheral surface of the frame and comprising a plurality of split cores disposed in a peripheral direction, each of the plurality of split cores comprising:
- a groove disposed along an axial direction on a central position in the peripheral direction on an outer peripheral surface of the split core;
- and
- a first protrusion disposed on a bottom of the groove and protruding outward in a radial direction,
- wherein the groove comprises two side surfaces facing each other in the peripheral direction,
- wherein a groove width between the two side surfaces in the peripheral direction decreases inward in the radial direction,
- wherein the groove comprises two second protrusions contacting the inner peripheral surface of the frame and protruding in a mutually approaching direction from an outer end portion of each of the two side surfaces in the radial direction,
- wherein the groove comprises two first notches respectively disposed between the first protrusion and the two side surfaces,
- wherein each of the two first notches is formed to be an acute angle,
- wherein the groove comprises two second notches respectively disposed between the two side surfaces and the two second protrusions, and
- wherein each of the two second notches is formed to be an acute angle.
Dependencies are inferred from the claim text.