基本信息:
- 专利标题： 扬声器及使用该扬声器的便携式电话及电子设备
- 专利标题（英）：Loudspeaker, and portable telephone and electronic equipment using same loudspeaker
- 申请号：CN201320470599.6 申请日：2013-08-02
- 公开(公告)号：CN203399281U 公开(公告)日：2014-01-15
- 发明人： 松尾雄史 , 牧野泰博
- 申请人： 三洋电机株式会社
- 申请人地址： 日本国大阪府
- 专利权人： 三洋电机株式会社
- 当前专利权人： 三洋电机株式会社
- 当前专利权人地址： 日本国大阪府
- 代理机构： 中科专利商标代理有限责任公司
- 代理人： 雒运朴
- 优先权： 2012-175739 2012.08.08 JP
- 主分类号： H04R9/06
- IPC分类号： H04R9/06 ; H04R9/02
The utility model provides a loudspeaker, and a portable telephone and electronic equipment using the same loudspeaker. The problem is that the sound pressure grad is reduced due to requirements of miniaturizing, lighting and compacting a loudspeaker in the market. A magnetic circuit is designed in a non-circular shape to improve a space factor; the loudspeaker is formed by arranging notches in an upper plate, or a lower plate, or both in a way that the outer diameter of the magnetic circuit is smaller than the outer diameter of a magnet, so that the leaked magnetic flux from the magnetic circuit to the external is reduced, the magnetic flux toward the magnetic gap is concentrated, and the magnetic efficiency of the magnetic circuit is favorable to improve the sound pressure grade.
IPC结构图谱:
| H | 电学 |
| --H04 | 电通信技术 |
| ----H04R | 扬声器、送话器、唱机拾音器或类似的传感器 |
| ------H04R9/00 | 动圈、动片或动线型传感器 |
| --------H04R9/06 | .扬声器 |