| 发明名称 | Sound transducer | ||
| 摘要 | An apparatus including a frame; a coil movably connected to the frame; and a magnet system connected to the frame. The magnet system includes at least one magnet and at least one pole piece connected to the at least one magnet. The at least one pole piece include a magnet pot. A cross sectional length of the magnet pot and the frame are substantially the same in at least one cross sectional location. | ||
| 申请公布号 | US9584921(B2) | 申请公布日期 | 2017.02.28 |
| 申请号 | US201414331655 | 申请日期 | 2014.07.15 |
| 申请人 | Nokia Technologies Oy | 发明人 | Shi Shengrong;Yang Yuanjia;Guo Jian;Lopez Oscar |
| 分类号 | H04R9/02;H04R9/06 | 主分类号 | H04R9/02 |
| 代理机构 | Harrington & Smith | 代理人 | Harrington & Smith |
| 主权项 | 1. An apparatus comprising: a frame; a coil movably located in the apparatus; and a magnet system connected to the frame, where the magnet system comprises at least one magnet and at least one pole piece connected to the at least one magnet, where a first one of the at least one pole piece comprises a magnet pot, where a cross sectional length of the magnet pot and the frame are substantially the same in at least one cross sectional location, and where the frame is located against exterior lateral sides of at least a portion of the first pole piece. | ||
| 地址 | Espoo FI | ||