Invention Grant
- Patent Title: Voice coil damper
- Patent Title (中): 音圈阻尼器
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Application No.: US11897699Application Date: 2007-08-30
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Publication No.: US07848058B2Publication Date: 2010-12-07
- Inventor: Fu-Ying Huang , Jifang Tian
- Applicant: Fu-Ying Huang , Jifang Tian
- Applicant Address: NL Amsterdam
- Assignee: Hitachi Global Storage Technologies, Netherlands, B.V.
- Current Assignee: Hitachi Global Storage Technologies, Netherlands, B.V.
- Current Assignee Address: NL Amsterdam
- Main IPC: G11B21/02
- IPC: G11B21/02

Abstract:
A voice coil for a voice coil motor of a hard disk drive comprises an inner surface of the voice coil, which bounds a central space of the voice coil. A first outer surface of the voice coil is substantially parallel to a second outer surface of the voice coil. A constrained layer damper is attached to the inner surface of the voice coil by a coupler. The constrained layer damper comprises a first constraining layer coupled to a first surface of a viscoelastic damping layer. A second constraining layer is coupled to a second surface of the viscoelastic damping layer. The constrained layer damper is curved in a direction that is substantially perpendicular to the first outer surface of the voice coil and the second outer surface of the voice coil.
Public/Granted literature
- US20090059435A1 Voice coil damper Public/Granted day:2009-03-05
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