发明名称 |
Disk drive piezoelectric actuator with coupling portion extending across a slit between flexible substrates |
摘要 |
A piezoelectric actuator with a reinforced bending mode to suppress bending resonance caused by extension/contraction movements of the piezoelectric actuator and a disk drive using the piezoelectric actuator are provided. A flexible substrate is separated by a slit. A first piezoelectric element unit and a second piezoelectric element unit, both showing extension/contraction displacement, are disposed on one of the slit-separated flexible substrates, respectively. A coupling portion is provided to couple the separated flexible substrates across the slit. The coupling portion is provided at a position corresponding to an antinode of a primary bending mode of the first and second piezoelectric element units being respectively fixed in both ends.
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申请公布号 |
US7312955(B2) |
申请公布日期 |
2007.12.25 |
申请号 |
US20030684403 |
申请日期 |
2003.10.15 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
KUWAJIMA HIDEKI;MATSUOKA KAORU |
分类号 |
G11B5/596;G11B21/08;G11B5/48;G11B5/55;G11B21/10;G11B21/21;H01L41/09;H01L41/22;H02N2/04 |
主分类号 |
G11B5/596 |
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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