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    • 3. 发明申请
    • Head assembly having microactuator
    • 头部组件,具有微型致动器
    • US20030231434A1
    • 2003-12-18
    • US10352002
    • 2003-01-28
    • FUJITSU LIMITED
    • Tsuyoshi MitaMasaharu HidaKazuaki Kurihara
    • G11B005/56
    • G11B5/4853
    • When wire-bonding process is effected, a head assembly is held between a pair of clamp members. A head slider is urged against a microactuator. The urging force is transmitted to the microactuator through second adhesive layers. Since the second adhesive layers are positioned symmetrically around the rotational axis of the head slider, the urging force tends to act along the rotational axis. The microactuator is simultaneously urged against the support member. The urging force is transmitted from a first adhesive layer to the support member. Since the first adhesive layer extends around the rotational axis, the urging force tends to act along the rotational axis. The head slider is thus allowed to keep a uniform attitude. The microactuator is also allowed to keep a uniform attitude. The microactuator is prevented from suffering from substantial bending stresses.
    • 当进行引线接合工艺时,头部组件保持在一对夹紧构件之间。 磁头滑块被推向微型致动器。 推动力通过第二粘合剂层传递到微致动器。 由于第二粘合剂层围绕磁头滑块的旋转轴线对称定位,所以推动力倾向于沿旋转轴线作用。 微型致动器同时被推靠在支撑构件上。 推动力从第一粘合剂层传递到支撑构件。 由于第一粘合剂层围绕旋转轴线延伸,所以推动力倾向于沿着旋转轴线起作用。 因此,头部滑块被允许保持均匀的姿态。 微型制动器也可以保持统一的态度。 防止微致动器遭受实质的弯曲应力。
    • 4. 发明申请
    • Piezoelectric actuator and information storage device
    • 压电执行器和信息存储装置
    • US20040120081A1
    • 2004-06-24
    • US10687404
    • 2003-10-16
    • FUJITSU LIMITED
    • Kazuaki KuriharaMasaharu HidaTsuyoshi Mita
    • G11B005/56
    • H02N2/046G11B5/4826G11B5/5552
    • The present invention has an object to provide a small, light-weight, impact-resistant, high-accuracy, and low-cost piezoelectric actuator which can achieve a large displacement at a low drive voltage as well as an information storage device which incorporates the piezoelectric actuator and has high recording density. The piezoelectric actuator according to the present invention is equipped with a hinge plate 220 which has a central portion 221, two lateral portions 222 extending point-symmetrically from both ends of the central portion 221, and two limbs 223 extending point-symmetrically and non-linear symmetrically from both ends of the central portion 221 as well as with a piezoelectric element 210 which brings the two limbs 223 toward and away from each other.
    • 本发明的目的是提供一种小型,重量轻,耐冲击,高精度和低成本的压电致动器,其可以在低驱动电压下实现大的位移,并且提供一种信息存储装置,其包括 压电致动器并具有高记录密度。 根据本发明的压电致动器装备有铰链板220,铰链板220具有中心部分221,从中心部分221的两端点对称延伸的两个侧部部分222和两个点对称和非对称延伸的两个分支223, 从中心部分221的两端线性对称,以及使两个肢体223彼此朝向和远离的压电元件210。
    • 10. 发明申请
    • Piezoelectric actuator, driving method and information storage device
    • 压电致动器,驱动方法和信息存储装置
    • US20030133230A1
    • 2003-07-17
    • US10357047
    • 2003-02-03
    • FUJITSU LIMITED
    • Masaharu HidaTsuyoshi MitaKazuaki Kurihara
    • G11B005/56
    • G11B5/5552H01L41/0833H02N2/10
    • The present invention aims to provide a compact and lightweight piezoelectric actuator, a driving method involving the piezoelectric actuator that can provide a large displacement at a low voltage, and a compact and lightweight information storage device with a high recording density that incorporates such a piezoelectric actuator and has a small moment of inertia of a head when the head is driven. The piezoelectric actuator 110 according to the present invention has four rod-shaped driving sections 111null1, 111null2, 111null3 and 111null4. Of the four rod-shaped driving sections 111null1, 111null2, 111null3 and 111null4, a voltage is applied to the two driving sections 111null2 and 111null3 located along a diagonal line at a time, and the voltage is applied to the two driving sections 111null1 and 111null4 located along the other diagonal line at a different time from the time for the driving sections 111null2 and 111null3, whereby two central sections 112null1 and 112null2 are rotationally driven relative to two end sections 113null1 and 113null2.
    • 本发明旨在提供一种紧凑且轻便的压电致动器,其包括可提供低电压位移的压电致动器的驱动方法,以及具有高记录密度的紧凑且重量轻的信息存储装置,其结合了这种压电致动器 并且当头被驱动时具有头部的小的惯性矩。 根据本发明的压电致动器110具有四个棒状驱动部分111-1,111-2,111-3和111-4。 在四个棒状驱动部111-1,111-2,111-3和111-4中,一次对沿着对角线设置的两个驱动部111-2和111-3施加电压, 在与驱动部111-2和111-3的时间不同的时刻,将电压施加到沿着另一对角线的两个驱动部111-1和111-4,由此两个中心部112-1和112 -2相对于两个端部113-1和113-2被旋转地驱动。