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    • 21. 发明申请
    • Magnetic head support, magnetic head assembly including the magnetic head support, and magnetic disk drive including the magnetic head assembly
    • 磁头支撑件,包括磁头支架的磁头组件和包括磁头组件的磁盘驱动器
    • US20060158782A1
    • 2006-07-20
    • US11326612
    • 2006-01-04
    • Kousaku WakatsukiShigeo NakamuraHiroshi AgariHaruhide Takahashi
    • Kousaku WakatsukiShigeo NakamuraHiroshi AgariHaruhide Takahashi
    • G11B5/48
    • G11B5/4833
    • Embodiments of the invention provide a magnetic head support capable of achieving reduction in weight, while maintaining good stiffness and vibration characteristics, a magnetic head assembly including the magnetic head support, and a magnetic disk drive including the magnetic head assembly. In one embodiment, the magnetic head support includes (a) an arm pivotally supported, (b) a load beam secured to the arm, and (c) a flexure secured to the load beam. The load beam (b) includes (b-1) a spring portion and (b-2) a leading end portion. The leading end portion (b-2) includes an elongated portion having a width smaller than an external dimension of the spring portion and having leading end flanges on both edges thereof and a base portion for connecting the elongated portion and the spring portion. The flexure (c) includes a backing member with which the base portion is backed. The magnetic head assembly includes the magnetic head support, and the magnetic disk drive includes the magnetic head assembly.
    • 本发明的实施例提供一种能够实现重量减轻同时保持良好刚度和振动特性的磁头支撑件,包括磁头支撑件的磁头组件和包括磁头组件的磁盘驱动器。 在一个实施例中,磁头支撑件包括(a)枢转地支撑的臂,(b)固定到臂的负载梁,和(c)固定到负载梁的挠曲件。 负载梁(b)包括(b-1)弹簧部分和(b-2)前端部分。 前端部分(b-2)包括细长部分,其宽度小于弹簧部分的外部尺寸,并且在其两个边缘上具有前端凸缘,以及用于连接细长部分和弹簧部分的基部。 挠曲件(c)包括背衬部件,基部部件与该背部部件支承。 磁头组件包括磁头支架,磁盘驱动器包括磁头组件。
    • 22. 发明授权
    • Disk drive having a two-stage actuator for suppressing a flying-height fluctuation
    • 具有用于抑制飞行高度波动的两级致动器的磁盘驱动器
    • US06950287B2
    • 2005-09-27
    • US10372921
    • 2003-02-26
    • Shigeo NakamuraHaruhide TakahashiKousaku Wakatsuki
    • Shigeo NakamuraHaruhide TakahashiKousaku Wakatsuki
    • G11B5/596G11B5/55G11B21/10G11B21/21G11B5/56
    • G11B5/5552G11B5/4873
    • There is provided a magnetic disk drive in which a flying-height fluctuation produced by the operation of a fine actuator is decreased, the reliability is high, and recording density is high. For this purpose, the magnetic disk drive is configured as described below. The magnetic disk drive has a suspension including a base plate connected to a carriage, a load beam fitted with a slider, and a fine actuator which is provided on the base plate and finely moves the load beam. The configuration is such that the shortest track travel time using the fine actuator is larger than the inverse number of the local maximum of a flying-height fluctuation frequency of the suspension by the fine actuator. Also, the configuration is such that the shortest track travel time using the fine actuator is larger than the inverse number of the natural frequency of first torsion mode of the suspension by the fine actuator.
    • 提供了一种磁盘驱动器,其中通过精细致动器的操作产生的飞高高度波动降低,可靠性高,并且记录密度高。 为此,磁盘驱动器的配置如下所述。 磁盘驱动器具有悬架,其包括连接到滑架的底板,装配有滑块的负载梁和设置在基板上并精细地移动负载梁的精细致动器。 该配置使得使用精细致动器的最短轨迹行进时间大于由精细致动器的悬架的飞行高度起伏频率的局部最大值的倒数。 此外,该配置使得使用精细致动器的最短轨迹行进时间大于由精细致动器的悬架的第一扭转模式的固有频率的倒数。
    • 26. 发明授权
    • Microactuator, head gimbal assembly, and disk drive device
    • 微型致动器,头万向架组件和磁盘驱动器
    • US08068313B2
    • 2011-11-29
    • US12271820
    • 2008-11-14
    • Nobumasa NishiyamaRyo YoshidaHaruhide TakahashiShinobu HagiyaToshiki Hirano
    • Nobumasa NishiyamaRyo YoshidaHaruhide TakahashiShinobu HagiyaToshiki Hirano
    • G11B5/48
    • G11B5/4826G11B5/4873G11B5/5552
    • Embodiments of the present invention relate to approaches to effectively let noise on a head slider bonded to a silicon substrate of a microactuator, escape to the ground. A head gimbal assembly (HGA) according to an embodiment of the present invention comprises a microactuator bonded to a gimbal tongue. The microactuator comprises a piezoelectric element and a movable part for moving in response to expansion or contraction of the piezoelectric element. The motion of the movable part causes a head slider to slightly move. The microactuator further comprises a conductive path including an impurity-containing silicon layer formed on the silicon substrate. The conductive path transmits electric charge of the head slider to a suspension. The conductivity of the impurity-containing silicon layer is lower than the one of the silicon substrate so that the noise charge of the head slider may escape to the suspension.
    • 本发明的实施例涉及有效地使结合到微致动器的硅衬底的磁头滑块上的噪声逃逸到地面的方法。 根据本发明的实施例的头万向节组件(HGA)包括结合到万向节舌的微致动器。 微致动器包括压电元件和用于响应于压电元件的膨胀或收缩而移动的可移动部件。 可移动部分的运动导致磁头滑块稍微移动。 微致动器还包括导电路径,该导电路径包括在硅衬底上形成的含杂质的硅层。 导电路径将磁头滑块的电荷传递到悬架。 含杂质的硅层的导电率低于硅衬底的电导率,使得磁头滑块的噪声电荷可能逸出到悬架。
    • 28. 发明申请
    • MICROACTUATOR, HEAD GIMBAL ASSEMBLY, AND DISK DRIVE DEVICE
    • 微处理器,头盖组件和磁盘驱动器件
    • US20090135523A1
    • 2009-05-28
    • US12271820
    • 2008-11-14
    • Nobumasa NishiyamaRyo YoshidaHaruhide TakahashiShinobu HagiyaToshiki Hirano
    • Nobumasa NishiyamaRyo YoshidaHaruhide TakahashiShinobu HagiyaToshiki Hirano
    • G11B5/48
    • G11B5/4826G11B5/4873G11B5/5552
    • Embodiments of the present invention relate to approaches to effectively let noise on a head slider bonded to a silicon substrate of a microactuator, escape to the ground. A head gimbal assembly (HGA) according to an embodiment of the present invention comprises a microactuator bonded to a gimbal tongue. The microactuator comprises a piezoelectric element and a movable part for moving in response to expansion or contraction of the piezoelectric element. The motion of the movable part causes a head slider to slightly move. The microactuator further comprises a conductive path including an impurity-containing silicon layer formed on the silicon substrate. The conductive path transmits electric charge of the head slider to a suspension. The conductivity of the impurity-containing silicon layer is lower than the one of the silicon substrate so that the noise charge of the head slider may escape to the suspension.
    • 本发明的实施例涉及有效地使结合到微致动器的硅衬底的磁头滑块上的噪声逃逸到地面的方法。 根据本发明的实施例的头万向节组件(HGA)包括结合到万向节舌的微致动器。 微致动器包括压电元件和用于响应于压电元件的膨胀或收缩而移动的可移动部件。 可移动部分的运动导致磁头滑块稍微移动。 微致动器还包括导电路径,该导电路径包括在硅衬底上形成的含杂质的硅层。 导电路径将磁头滑块的电荷传递到悬架。 含杂质的硅层的导电率低于硅衬底的电导率,使得磁头滑块的噪声电荷可以逸出到悬架。
    • 29. 发明授权
    • Microactuator, head gimbal assembly, and magnetic disk drive
    • 微型制动器,磁头万向架组件和磁盘驱动器
    • US08213127B2
    • 2012-07-03
    • US12284252
    • 2008-09-19
    • Haruhide TakahashiToshiki Hirano
    • Haruhide TakahashiToshiki Hirano
    • G11B5/56
    • G11B5/4826G11B5/4873G11B5/5552
    • Embodiments of the present invention help to suppress reduction of the operation quantity of a microactuator. According to one embodiment, a microactuator comprises a silicon substrate and a piezoelectric element. The silicon substrate has some rigidity and provides elastic counter force to the piezoelectric element. In the piezoelectric element, a secondary piezoelectric layer is laminated on a primary piezoelectric layer opposite from the silicon substrate. The contraction force of the secondary piezoelectric layer acts on the primary piezoelectric layer so that it bends toward the secondary piezoelectric layer opposite from the silicon substrate. When the primary piezoelectric layer expands, the contraction force of the secondary piezoelectric layer acts on the primary piezoelectric layer so that it warps against the primary piezoelectric layer.
    • 本发明的实施例有助于抑制微致动器的操作量的减少。 根据一个实施例,微致动器包括硅衬底和压电元件。 硅衬底具有一定的刚性并且向压电元件提供弹性反作用力。 在压电元件中,在与硅衬底相反的初级压电层上层压次级压电层。 次级压电层的收缩力作用在初级压电层上,使其向与第二压电层相对的硅衬底弯曲。 当主压电层膨胀时,次级压电层的收缩力作用在初级压电层上,使其与主压电层翘曲。