发明名称 |
Loudspeaker and electronic apparatus using the same |
摘要 |
In a loudspeaker, three magnets are disposed to provide magnetic gaps therebetween and a voice coil is fit therein. The magnets disposed at both sides are magnetized so that their opposing poles exhibit the same magnetic polarity. The magnet in the middle has its magnetic poles in the direction perpendicular to the line connecting the poles of the side magnets. The side magnets are fixed to a plate made of non-magnetic material. Those magnetic poles of the side magnets and the middle magnet not facing the magnetic gaps are magnetically coupled by a magnetic member. |
申请公布号 |
US8160292(B2) |
申请公布日期 |
2012.04.17 |
申请号 |
US20070065208 |
申请日期 |
2007.09.28 |
申请人 |
SANO KOJI;HONDA KAZUKI;KAWABE MASASHI;TSUTSUMI MAMIKO;PANASONIC CORPORATION |
发明人 |
SANO KOJI;HONDA KAZUKI;KAWABE MASASHI;TSUTSUMI MAMIKO |
分类号 |
H04R1/00 |
主分类号 |
H04R1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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