发明名称 |
PIEZOELECTRIC DRIVE UNIT, IMAGE PICKUP DEVICE, AND PORTABLE TERMINAL DEVICE |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide a drive unit downsized and thinned, and also improved in shock resistance. <P>SOLUTION: The drive unit 1 has: a piezoelectric element 3; a weight 2 which is fixed to one end in the direction of expansion and contraction of the piezoelectric element; and a drive member which is fixed to the other end of the piezoelectric element. The piezoelectric element and the weight abut on each other, having a spatial overlap in the direction of expansion and contraction of the piezoelectric element, and the center of gravity of the weight is positioned in the vicinity of a plane which includes an abutting face where the piezoelectric element and the weight abut on each other. <P>COPYRIGHT: (C)2008,JPO&INPIT |
申请公布号 |
JP2007282422(A) |
申请公布日期 |
2007.10.25 |
申请号 |
JP20060107653 |
申请日期 |
2006.04.10 |
申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
UKAWA KOJI;NISHIZAWA HIROSHI |
分类号 |
H02N2/00;G02B7/08;H01L41/09;H01L41/187;H04N5/225 |
主分类号 |
H02N2/00 |
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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