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Reactor and method for producing same
US8928447B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8928447-B2 |
| Application number | US-201113703883-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 27, 2011 |
| Priority date | Jun 16, 2010 |
| Publication date | Jan 6, 2015 |
| Grant date | Jan 6, 2015 |
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- Title
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Abstract
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A reactor 1 α includes one coil 2 , a magnetic core 3 to which the coil 2 is arranged, and a case 4 containing an assembly 10 of the coil 2 and the magnetic core 3 . The magnetic core 3 includes an inner core portion 31 inserted into the coil 2 , and a coupling core portion 32 disposed around the coil 2 . The coupling core portion 32 is made of a mixture of magnetic powder and resin. The coil 2 is covered with the coupling core portion 32 and is enclosed within the case 4 in a sealed state. The reactor 1 α includes, in an outermost surface region exposed at an opening of the case 4 , a magnetic shield layer 5 made of non-magnetic powder, having smaller specific gravity than the magnetic powder and having electrical conductivity, and the resin. A small reactor capable of reducing magnetic flux leaked to the outside is thereby provided. A method of producing a small reactor capable of reducing magnetic flux leaked to the outside is also provided which produces the reactor 1 α by filling the case 4 with a mixture of magnetic powder, non-magnetic powder, and resin, producing a state where the non-magnetic powder has floated to the opening side of the case 4 and the magnetic powder has precipitated on the bottom side of the case 4 , and hardening the resin.
First claim
Opening claim text (preview).
The invention claimed is: 1. A reactor comprising one coil formed by winding a wire, a magnetic core to which the coil is arranged, and a case having an opening and containing an assembly of the coil and the magnetic core, wherein the coil is enclosed within the case in a sealed state while at least a part of an outer periphery of the coil is covered with the magnetic core, a region of the magnetic core on a side close to the opening of the case is made of a mixture of magnetic…
Assignees
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Classifications
Electricity · mapped topic
Electricity · mapped topic
- H01F27/255Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US8928447B2 cover?
- A reactor 1 α includes one coil 2 , a magnetic core 3 to which the coil 2 is arranged, and a case 4 containing an assembly 10 of the coil 2 and the magnetic core 3 . The magnetic core 3 includes an inner core portion 31 inserted into the coil 2 , and a coupling core portion 32 disposed around the coil 2 . The coupling core portion 32 is made of a mixture of magnetic powde…
- Who is the assignee on this patent?
- Inaba Kazuhiro, Sumitomo Electric Industries
- What technology area does this patent fall under?
- Primary CPC classification H01F27/255. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 06 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).