Vibration damping loudspeaker
US-2024430621-A1 · Dec 26, 2024 · US
Speaker diaphragm and production method for speaker diaphragm
US9521490B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9521490-B2 |
| Application number | US-201314384956-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 13, 2013 |
| Priority date | Mar 14, 2012 |
| Publication date | Dec 13, 2016 |
| Grant date | Dec 13, 2016 |
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Abstract
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A diaphragm can be obtained which exhibits large internal loss and Young's modulus and which can be produced efficiently. A speaker diaphragm 1 comprises at least one layer 1 A formed by molding a component member configured by a fiber and a tangled fiber body of a synthetic fiber. The synthetic fiber is a polyvinyl alcohol fiber having boron.
First claim
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What is claimed is: 1. A speaker diaphragm comprising a first layer and a second layer, wherein said first layer has mica and is configured by a first component member, which is a tangled fiber body, said tangled fiber body is configured by a natural fiber and a synthetic fiber different from said natural fiber, and said synthetic fiber is a polyvinyl alcohol fiber having boron, weight of the synthetic fiber is lower than weight of the natural fiber, and said second layer being configured by a second component member, which is a tangled fiber body. 2. The speaker diaphragm according to claim 1 , wherein said synthetic fiber has a bending shape. 3. The speaker diaphragm according to claim 1 , wherein said mica is attached to said synthetic fiber. 4. The speaker diaphragm according to claim 1 , wherein an internal loss of said speaker diaphragm is larger than 0.0216, and a Young's modulus of said speaker diaphragm is larger than 4.40*109 N/m2. 5. The speaker diaphragm according to claim 1 , wherein a cross sectional shape of said synthetic fiber is a circular shape. 6. A speaker device comprising: the speaker diaphragm according to claim 1 ; a voice coil; and a magnetic circuit having a magnet. 7. An electronic device comprising the speaker device according to claim 6 . 8. An automobile comprising the speaker device according to claim 6 .
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Frequently asked questions
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- What does patent US9521490B2 cover?
- A diaphragm can be obtained which exhibits large internal loss and Young's modulus and which can be produced efficiently. A speaker diaphragm 1 comprises at least one layer 1 A formed by molding a component member configured by a fiber and a tangled fiber body of a synthetic fiber. The synthetic fiber is a polyvinyl alcohol fiber having boron.
- Who is the assignee on this patent?
- Pioneer Corp, Pioneer Tohoku Corp, Mogami Denki Corp
- What technology area does this patent fall under?
- Primary CPC classification H04R7/04. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 13 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).