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Stator unit and motor
US9209658B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9209658-B2 |
| Application number | US-201213493237-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 11, 2012 |
| Priority date | Jun 13, 2011 |
| Publication date | Dec 8, 2015 |
| Grant date | Dec 8, 2015 |
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Abstract
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A stator unit including a coil in which a distance between an m−1-th turn and an m-th turn is wider than each distance in a first turn to the m−1-th turn. The m+1-th turn is disposed between the m−1-th turn and the m-th turn. Further, in a cross-section perpendicular to a central axis and passing a tooth, an angle between a line segment connecting respective centers of the m+1-th turn and the m−1-th turn and a line segment connecting respective centers of the m+1-th turn and the m-th turn is about 120° or more. With this structure, bulging in a circumferential direction of the coil adjacent to an inner peripheral portion of the tooth can be suppressed and a clearance can be secured between adjacent coils such that the number of turns of the coil can be increased.
First claim
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What is claimed is: 1. A stator unit comprising: a plurality of teeth extending in a radial direction with respect to a central axis; an insulator that covers each of the plurality of teeth; and a coil that is defined by a conducting wire wound around the insulator; wherein when m is set to be an integer equal to 2 or more and n is set to be an integer larger than m+1, the coil includes: a first layer defined by a first turn to an m-th turn; and a second layer defined by…
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- What does patent US9209658B2 cover?
- A stator unit including a coil in which a distance between an m−1-th turn and an m-th turn is wider than each distance in a first turn to the m−1-th turn. The m+1-th turn is disposed between the m−1-th turn and the m-th turn. Further, in a cross-section perpendicular to a central axis and passing a tooth, an angle between a line segment connecting respective centers of the m+1-th turn and the m…
- Who is the assignee on this patent?
- Haga Hidehiro, Adachi Kuniaki, Shoji Kensuke, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification H02K3/28. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 08 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).