Rotor and motor
US-2024388149-A1 · Nov 21, 2024 · US
Rotor of magnet-assisted reluctance motor and brushless motor
US9490673B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9490673-B2 |
| Application number | US-201314421600-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 10, 2013 |
| Priority date | Aug 16, 2012 |
| Publication date | Nov 8, 2016 |
| Grant date | Nov 8, 2016 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A rotor includes S-pole and N-pole magnets which are arc-shaped in cross-section. Each pole has three magnets. Each magnet is embedded in the rotor in such a way that a convex side portion thereof faces center Or of the rotor. Distance Rs between center Os of circular arcs of S-pole magnets and center Or of the rotor is different from distance Rn between center On of circular arcs of N-pole magnets and center Or of the rotor (Rs≠Rn). The ratio of the two distances is 0.92 (Rs/Rn=0.92). An outer peripheral section of an innermost-layer S-pole magnet is disposed in such a way as to protrude into an adjacent pole zone N 1 or N 2 from a pole zone S 1 or S 2.
First claim
Opening claim text (preview).
The invention claimed is: 1. A brushless motor that includes a stator that includes windings of a plurality of phases, and a rotor that is disposed inside the stator in a rotatable manner and which includes a plurality of internal mounting holes in which a plurality of permanent magnets are embedded, wherein a direction of magnetic flux formed by each of magnetic poles of the plurality of permanent magnets is set as d-axis, an axis that is magnetically orthogonal to d-axis is set a…
Assignees
Inventors
Classifications
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
- H02K1/2766Primary
Electricity · mapped topic
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9490673B2 cover?
- A rotor includes S-pole and N-pole magnets which are arc-shaped in cross-section. Each pole has three magnets. Each magnet is embedded in the rotor in such a way that a convex side portion thereof faces center Or of the rotor. Distance Rs between center Os of circular arcs of S-pole magnets and center Or of the rotor is different from distance Rn between center On of circular arcs of N-pole mag…
- Who is the assignee on this patent?
- Mitsuba Corp
- What technology area does this patent fall under?
- Primary CPC classification H02K1/2766. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 08 2016 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).