发明名称 |
EXTERNAL-MAGNET-TYPE MAGNETIC CIRCUIT |
摘要 |
An external-magnet-type magnetic circuit includes an iron core and at least one composite magnet coaxially mounted around the iron core. The composite magnet has two magnetic poles with field directions thereof substantially perpendicular to each other, wherein one of the magnetic poles has the field direction thereof pointing to the iron core, and a magnetism-guiding plate being deposited on the other magnetic pole of the composite magnet and being separated from the iron core by a magnetic gap. Thereby, the composite magnet provides high magnetic flux density in relatively small volume, without the additional use of any magnetism-guiding yokes, and thus is particularly suitable for small-size amplifiers where it helps to improve acoustic sensitivity and acoustic output performance. |
申请公布号 |
US2015213932(A1) |
申请公布日期 |
2015.07.30 |
申请号 |
US201414453680 |
申请日期 |
2014.08.07 |
申请人 |
MERRY ELECTRONICS (SUZHOU) CO., LTD. |
发明人 |
WU Chien Ju;WANG Wen Hong;CHEN Chun Pin |
分类号 |
H01F7/02 |
主分类号 |
H01F7/02 |
代理机构 |
|
代理人 |
|
主权项 |
1. An external-magnet-type magnetic circuit, comprising:
an iron core; at least one composite magnet, being coaxially mounted around the iron core and having two magnetic poles with field directions thereof substantially perpendicular to each other, wherein one of the magnetic pole has the field direction thereof pointing to the iron core; and a magnetism-guiding plate, being deposited on the other of the magnetic poles of the composite magnet and being separated from the iron core by a magnetic gap. |
地址 |
Suzhou City CN |