| 发明名称 |
Single-piece yoke damper for voice coil actuator |
| 摘要 |
Approaches to improving actuator settle time by damping vibrations resulting from coil modes, such as with a voice coil actuator in a hard disk drive, include a single-piece damper plate coupled to the voice coil actuator yoke. The damper plate may be a single U-shaped piece of metal that covers the area of the yoke that experiences the maximum strain energy during operation, between the voice coil and the pivot bearing housing. |
| 申请公布号 |
US9177579(B2) |
申请公布日期 |
2015.11.03 |
| 申请号 |
US201314081872 |
申请日期 |
2013.11.15 |
| 申请人 |
HGST Netherlands B.V. |
发明人 |
Keshavan Manoj B. |
| 分类号 |
G11B21/02;G11B5/55;H02K33/16;H02K41/035 |
主分类号 |
G11B21/02 |
| 代理机构 |
|
代理人 |
Henkhaus John D. |
| 主权项 |
1. A voice coil actuator comprising:
a wire coil configured to carry electrical current; a yoke supporting said coil; and a single-piece damper plate coupled to said yoke, said damper plate comprises an inner leg, an outer leg, and a middle leg spanning between said inner and outer legs in a continuous and substantially U-shape; wherein said damper plate is a continuous piece of metal that covers only said yoke in a region that experiences maximum strain energy associated with the bending and torsion modes of said coil during operation of said voice coil actuator. |
| 地址 |
Amsterdam NL |
