Stator for rotary electric machine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorTakeshi TOMONAGA
Life of this patent
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Abstract
A stator for a rotary electric machine includes a stator core including a stack of a plurality of steel sheets 36; a stator coil wound around teeth of the stator core; and a plurality of insulators interposed between the stator core and the stator coil. Each of the insulators has at least one engagement tab projecting toward a side surface of a tooth. Each of the steel sheets 36 has a plurality of tooth portions 40 that form the teeth when the steel sheets 36 are stacked. Each of some of the plurality of tooth portions 40 has a notch 42 formed on a side surface of the tooth portion 40, the notches 42 forming an engagement recess in which the engagement tab is hooked when the steel sheets 36 are stacked. The stator core is formed by rotating and stacking the plurality of steel sheets 36.
Claims7
A stator for a rotary electric machine, the stator comprising:
- a stator core comprising a stack of a plurality of steel sheets;
- a stator coil wound around teeth of the stator core;
- and
- a plurality of insulators interposed between the stator core and the stator coil, wherein
- each of the insulators has at least one engagement tab projecting toward a circumferential-direction side surface of a tooth when the insulator is attached to the tooth, the engagement tab extending only partially in the axial direction of the tooth,
- an engagement recess configured to hook the engagement tab therein is formed in the circumferential-direction side surface of each of the teeth,
- each of the steel sheets has a plurality of tooth portions that form the teeth when the plurality of steel sheets are stacked,
- each of some of the plurality of tooth portions has a notch formed on a circumferential-direction side surface of the tooth portion, the notches forming the engagement recess in which the engagement tab is hooked when the plurality of steel sheets are stacked,
- the plurality of steel sheets are rotated either one from another or in units of a plurality of steel sheets and stacked, and
- the engagement tab and the engagement recess correspond to each other in shape, position, and number.
Dependencies are inferred from the claim text.