发明名称 |
Earpiece for communications |
摘要 |
An earpiece for communications comprises a frame, a vibration system disposed in the frame and a magnetic field system disposed in the frame. The vibration system includes a vibrating armature, a diaphragm and a connecting rod. The magnetic field system includes a magnet to generate a first magnetic field on a first axis and a coil to generate a second magnetic field on a second axis. One of the magnet and the coil is connected to the frame. The first and the second magnetic fields produce a net magnetic force to cause the vibration system to move. The first axis is parallel to the second axis. |
申请公布号 |
US8265331(B2) |
申请公布日期 |
2012.09.11 |
申请号 |
US20090503002 |
申请日期 |
2009.07.14 |
申请人 |
ZHOU JUNDONG;WANG JINJUN;BYD COMPANY LIMITED |
发明人 |
ZHOU JUNDONG;WANG JINJUN |
分类号 |
H04R1/00;H04R9/06;H04R11/02;H04R25/00 |
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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