Electrical Machine and Vehicle Drive Device Equipped with the Same
First Claim
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1. An electrical machine, comprising:
- a stator that comprises;
a yoke formed with laminated annular steel sheets; and
a plurality of magnetic poles which protrude towards an inner diameter side of the yoke and on which a field coil is wound, wherein;
in the stator, a radial width of a part of the yoke corresponding to a magnetic pole width is broader to an outer diameter side than a radial width of a part of the yoke provided throughout between the magnetic poles; and
the stator is provided with a thorough-hole for a tightening bolt in the part of the yoke with the broad radial width.
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Abstract
An electrical machine includes a stator that includes: a yoke formed with laminated annular steel sheets; and a plurality of magnetic poles which protrude towards an inner diameter side of the yoke and on which a field coil is wound. In the stator, a radial width of apart of the yoke corresponding to a magnetic pole width is broader to an outer diameter side than a radial width of a part of the yoke provided throughout between the magnetic poles; and the stator is provided with a thorough-hole for a tightening bolt in the part of the yoke with the broad radial width.
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Citations
17 Claims
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1. An electrical machine, comprising:
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a stator that comprises; a yoke formed with laminated annular steel sheets; and a plurality of magnetic poles which protrude towards an inner diameter side of the yoke and on which a field coil is wound, wherein; in the stator, a radial width of a part of the yoke corresponding to a magnetic pole width is broader to an outer diameter side than a radial width of a part of the yoke provided throughout between the magnetic poles; and the stator is provided with a thorough-hole for a tightening bolt in the part of the yoke with the broad radial width. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 15)
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11. An electrical machine, comprising:
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a rotor that is rotatably held; and a stator that is placed opposite to the rotor across a void, and comprises an annular core, a plurality of toothed cores that protrude from a surface of the rotor side of the annular core toward the rotor and that are circumferentially placed at intervals, and a coil that is wound on the plurality of toothed cores, wherein; the annular core and the plurality of toothed cores are configured so as to establish a relation, Lc<
La<
Lb, where;La is a circumferential width at an end of an annular core side of the toothed core; Lb is a minimum radial width of an extension part of the annular core that corresponds to an area of the circumferential width La and that extends on an opposite side of the rotor side of the toothed core; and Lc is a minimum radial width of a bridge part of the Annular core that connects between circumferentially adjacent extension parts of the annular core. - View Dependent Claims (12, 16)
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13. An electrical machine, comprising:
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a rotor that is rotatably held; and a stator that is placed opposite to the rotor across a void, and comprises an annular core, a plurality of toothed cores that protrude from a surface of the rotor side of the annular core toward the rotor and that are circumferentially placed at intervals, and a coil that is wound on the plurality of toothed cores, wherein; the toothed core is formed so that its circumferential width is greater than the minimum radial width of the annular core; and in the stator, a magnetic circuit is configured so that a magnetic flux, flowing from the rotor side of the toothed core to another side, flows through a part of the annular core whose radial width is greater than the minimum radial width of the annular core and the circumferential width of the toothed core, to a side of the minimum radial width of the annular core. - View Dependent Claims (14, 17)
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Specification