| 发明名称 | Headphone driver, loudspeaker, and method of manufacturing headphone driver or loudspeaker | ||
| 摘要 | Provided is a headphone driver including a yoke that has a bottom surface and an erected surface that is erected in a perpendicular direction with respect to the bottom surface, and that is formed using a magnetic material, and a bonded magnet unit consisting of a bonded magnet that is provided on the bottom surface of the yoke. The magnetic flux of the bonded magnet unit is concentrated on the side surface of the bonded magnet unit facing the erected surface of the yoke. | ||
| 申请公布号 | US9491536(B2) | 申请公布日期 | 2016.11.08 |
| 申请号 | US201314372360 | 申请日期 | 2013.01.17 |
| 申请人 | Sony Corporation | 发明人 | Nageno Koji;Hara Takeshi |
| 分类号 | H04R1/10;H04R5/033;H04R3/00;H04R9/02 | 主分类号 | H04R1/10 |
| 代理机构 | Chip Law Group | 代理人 | Chip Law Group |
| 主权项 | 1. A headphone driver comprising: a yoke that has a bottom surface and an erected surface that is erected in a perpendicular direction with respect to the bottom surface, and that is formed using a magnetic material; and a bonded magnet unit consisting of a bonded magnet that is provided on the bottom surface of the yoke, wherein the magnetic flux of the bonded magnet unit is concentrated on a side surface of the bonded magnet unit facing the erected surface of the yoke, and wherein, in a cross section in a height direction of the bonded magnet unit, a height of the bonded magnet unit is greater than one-half of a width of the bonded magnet unit. | ||
| 地址 | Tokyo JP | ||