Brushless Electric Machine and Method of Manufacturing a Brushless Electric Machine
US-2024413684-A1 · Dec 12, 2024 · US
Manufacturing method of rotor for rotary electric machine
US2020266691A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020266691-A1 |
| Application number | US-202016742249-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 14, 2020 |
| Priority date | Feb 14, 2019 |
| Publication date | Aug 20, 2020 |
| Grant date | — |
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- Title
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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 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 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. 4 . 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 includes 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. 5 . 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 includes 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 3 , 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 includes 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.
Assignees
Inventors
Classifications
Rotor · CPC title
- H02K15/03Primary
having permanent magnets · CPC title
Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] · CPC title
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Frequently asked questions
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- What does patent US2020266691A1 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 Thu Aug 20 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).