Rotary electric machine and method of manufacturing the same
AssigneeDenso Corporation
InventorShigenobu Nakamura
Life of this patent
Estimating the term…
Abstract
In a rotary electric machine such as a vehicle AC generator, each slot of a stator core has chamfered corners extending over a distance longer than thickness of the core sheet and burrs extending from the core sheet in one direction so that the chamfered corners and burrs join the core sheet of adjacent layers together.
Claims14
A rotary electric machine comprising:
- a rotor;
- and
- a stator having a stator core and stator winding disposed opposite said rotor, said stator core being formed of a plurality of layers of a core sheet and having a plurality of slots, wherein
- each said slot has chamfered corners extending over a distance longer than the thickness of said core sheet and burrs extending from said core sheet of said plurality of layers in one direction at opposite ends of said stator core so that said chamfered corners and said burrs join said core sheet of adjacent layers together.
A rotary electric machine comprising a stator core having a plurality of layers of a core sheet, wherein
- said stator core has chamfered corners extending over a distance longer than the thickness of said core sheet and burrs extending from said plurality of layers in one direction at opposite ends thereof so that said chamfered corners and said burrs join said core sheet of adjacent layers together.
A method of manufacturing a stator of a rotary electric machine comprising the steps of:
- laminating an iron core sheet having a prescribed thickness in one direction to form a stator core;
- and
- pressing corners of said stator core to form chamfered corners to extend over a distance longer than said prescribed thickness so that said chamfered corners join said core sheet of adjacent layers together.
A method of manufacturing a stator of a rotary electric machine comprising the steps of:
- laminating a core sheet having a prescribed thickness in one direction to form a stator core having a plurality of slots;
- and
- pressing corners of said plurality of slots to form chamfered corners extending over a distance longer than said prescribed thickness so that said chamfered corners join said core sheet of adjacent layers together.
A method of manufacturing a stator of a rotary electric machine comprising the steps of:
- press-forming a iron core sheet having a prescribed thickness:
- laminating said iron core sheet into a plurality of layers to form a stator core;
- and
- pressing corners of said stator core to form chamfered corners extending over a distance longer than said prescribed thickness so that said chamfered corners join said core sheet of adjacent layers together.
A method of manufacturing a stator of a rotary electric machine comprising the steps of:
- press-forming a iron core sheet having a prescribed thickness:
- laminating said iron core sheet into a plurality of layers to form a stator core having a plurality of slots;
- and
- pressing corners of said plurality of slots to form chamfers extending over a distance longer than said prescribed thickness.
Dependencies are inferred from the claim text.