Laminated rotor and method for balancing the same
US-10622873-B2 · Apr 14, 2020 · US
Manufacturing method of rotor for rotary electric machine
US11165317B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11165317-B2 |
| Application number | US-202016742249-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 14, 2020 |
| Priority date | Feb 14, 2019 |
| Publication date | Nov 2, 2021 |
| Grant date | Nov 2, 2021 |
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 manufacturing method of a core for a rotary electric machine, the method includes inserting a permanent magnet that is not yet magnetized in a magnet insertion hole that is formed in a rotor core; injecting a magnet fixing material in the magnet insertion hole; curing the magnet fixing material by heating the rotor core and the permanent magnet; and magnetizing the permanent magnet before a temperature of the rotor core and the permanent magnet decreases to a normal temperature, after the curing of the magnet fixing material.
First claim
Opening claim text (preview).
What is claimed is: 1. A manufacturing method of a core for a rotary electric machine, the method comprising: inserting a permanent magnet that is not yet magnetized in a magnet insertion hole that is formed in a rotor core; injecting a magnet fixing material in the magnet insertion hole; curing the magnet fixing material by heating the rotor core and the permanent magnet; and magnetizing the permanent magnet without reheating and before a temperature of the rotor core and the permanent magnet decreases to a normal temperature, after the curing of the magnet fixing material. 2. The manufacturing method according to claim 1 , wherein the rotor core has a shaft insertion hole through which a rotor shaft passes, an inner diameter of the shaft insertion hole is equal to or less than an outer diameter of the rotor shaft, further comprising: inserting the rotor shaft in the shaft insertion hole after the curing of the magnet fixing material and before the magnetizing of the permanent magnet. 3. The manufacturing method according to claim 2 , wherein the curing of the magnet fixing material includes curing the magnet fixing material by heating the rotor core and the permanent magnet to increase a temperature up to a curing temperature of the magnet fixing material that is a temperature higher than the normal temperature, and the magnetizing of the permanent magnet incudes magnetizing the permanent magnet before the temperature of the rotor core and the permanent magnet that is increased to the curing temperature decreases to the normal temperature. 4. The manufacturing method according to claim 1 , wherein the rotor core has a shaft insertion hole through which a rotor shaft passes, an inner diameter of the shaft insertion hole is equal to or less than an outer diameter of the rotor shaft, further comprising: inserting the rotor shaft in the shaft insertion hole after the magnetizing of the permanent magnet and before the temperature of the rotor core and the permanent magnet decreases to the normal temperature. 5. The manufacturing method according to claim 4 , wherein the curing of the magnet fixing material includes curing the magnet fixing material by heating the rotor core and the permanent magnet to increase a temperature up to a curing temperature of the magnet fixing material that is a temperature higher than the normal temperature, and the magnetizing of the permanent magnet incudes magnetizing the permanent magnet before the temperature of the rotor core and the permanent magnet that is increased to the curing temperature decreases to the normal temperature. 6. The manufacturing method according to claim 1 , wherein the curing of the magnet fixing material includes curing the magnet fixing material by heating the rotor core and the permanent magnet to increase a temperature up to a curing temperature of the magnet fixing material that is a temperature higher than the normal temperature, and the magnetizing of the permanent magnet incudes magnetizing the permanent magnet before the temperature of the rotor core and the permanent magnet that is increased to the curing temperature decreases to the normal temperature. 7. The manufacturing method according to claim 1 , wherein the magnetizing occurs at a first temperature that is above a second temperature when the inserting and the injecting are performed and below a third temperature when the curing is performed.
Assignees
Inventors
Classifications
- H02K15/03Primary
having permanent magnets · CPC title
Rotor · CPC title
Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11165317B2 cover?
- A manufacturing method of a core for a rotary electric machine, the method includes inserting a permanent magnet that is not yet magnetized in a magnet insertion hole that is formed in a rotor core; injecting a magnet fixing material in the magnet insertion hole; curing the magnet fixing material by heating the rotor core and the permanent magnet; and magnetizing the permanent magnet before a t…
- Who is the assignee on this patent?
- Aisin Aw Co, Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H02K15/03. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 02 2021 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).