Brushless Electric Machine and Method of Manufacturing a Brushless Electric Machine
US-2024413684-A1 · Dec 12, 2024 · US
Manufacturing method for electric motor rotor
US9240709B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9240709-B2 |
| Application number | US-201213981102-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 3, 2012 |
| Priority date | Feb 8, 2011 |
| Publication date | Jan 19, 2016 |
| Grant date | Jan 19, 2016 |
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- Title
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Abstract
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A manufacturing method for an electric motor rotor includes: a stacking process in which a plurality of iron core pieces are stacked to form a laminated iron core; a magnet insertion process in which a permanent magnet is inserted into a magnet insertion hole provided in the laminated iron core; a resin filling process in which the laminated iron core is heated to fill the magnet insertion hole with a molten resin for magnet fixation; and a rotary shaft assembly process in which a rotary shaft is warm-fitted into a rotary shaft insertion hole of the laminated iron core utilizing residual heat from the heating of the laminated iron core 10 in the resin filling process.
First claim
Opening claim text (preview).
The invention claimed is: 1. A manufacturing method for an electric motor rotor, comprising: a stacking process of stacking a plurality of iron core pieces formed in a desired shape to form a laminated iron core; a magnet insertion process of inserting a magnet into a magnet insertion hole provided in the laminated iron core; a resin filling process of heating the laminated iron core to fill the magnet insertion hole with a molten resin for magnet fixation; and a rotary shaft assembly process of warm-fitting a rotary shaft into a rotary shaft insertion hole of the laminated iron core utilizing residual heat from the heating of the laminated iron core in the resin filling process. 2. The manufacturing method for an electric motor rotor according to claim 1 , wherein the resin filling process is performed with the laminated iron core heated to a temperature range of 150° C. to 200° C., and the rotary shaft assembly process is performed while the laminated iron core is in a temperature range of 140° C. to 180° C. because of residual heat from the resin filling process.
Assignees
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Classifications
Rotor · CPC title
having a flux concentration effect · CPC title
- H02K15/03Primary
having permanent magnets · CPC title
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- What does patent US9240709B2 cover?
- A manufacturing method for an electric motor rotor includes: a stacking process in which a plurality of iron core pieces are stacked to form a laminated iron core; a magnet insertion process in which a permanent magnet is inserted into a magnet insertion hole provided in the laminated iron core; a resin filling process in which the laminated iron core is heated to fill the magnet insertion hole…
- Who is the assignee on this patent?
- Kato Susumu, Maeda Shigeru, Yokoyama Takeshi, and 3 more
- 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 Jan 19 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).