Vibration damping loudspeaker
US-2024430621-A1 · Dec 26, 2024 · US
Electroacoustic transducing device
US9055359B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9055359-B2 |
| Application number | US-45098109-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 9, 2009 |
| Priority date | May 13, 2008 |
| Publication date | Jun 9, 2015 |
| Grant date | Jun 9, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
An electroacoustic transducing device such as a small speaker or receiver used in a portable telephone or the like. A yoke-integral frame is formed by a simple process, and the number of components and production steps for producing the electroacoustic transducing device are reduced, thereby improving productivity. The transducing device having: a magnetic circuit having a yoke, a magnet, and a pole piece; a vibration system having a diaphragm and a voice coil; and a frame which holds the magnetic circuit and the vibration system. The voice coil is placed in a magnetic gap, and the frame is formed by performing a pressing process on one sheet-like metal material into a bottomed tubular shape, and at least two places of the bottom plate being cut and raised to form a bottom frame-like yoke portion, thereby being formed into a yoke-integral type.
First claim
Opening claim text (preview).
The invention claimed is: 1. An electroacoustic transducing device, comprising: a magnetic circuit having a yoke, a magnet, and a pole piece; a vibration system having a diaphragm and a voice coil; and a yoke-integrally-formed-type frame which holds said magnetic circuit and said vibration system, said voice coil being placed in a magnetic gap, wherein: said frame is formed by drawing one sheet-like metal material into a shape having a bottom plate with at least two openings…
Assignees
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Classifications
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
- H04R9/025Primary
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9055359B2 cover?
- An electroacoustic transducing device such as a small speaker or receiver used in a portable telephone or the like. A yoke-integral frame is formed by a simple process, and the number of components and production steps for producing the electroacoustic transducing device are reduced, thereby improving productivity. The transducing device having: a magnetic circuit having a yoke, a magnet, and a…
- Who is the assignee on this patent?
- Kamimura Tomohiko, Yuasa Hideo, Ren Jinlong, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification H04R9/025. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 09 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).