公开(公告)号：US09036295B1

公开(公告)日：2015-05-19

申请号：US14225376

申请日：2014-03-25

申请人： Western Digital Technologies, Inc.

发明人： Shawn E. Casey ,  Jifang Tian ,  Tegan Campbell ,  Hongqi Li ,  William Flynn

IPC分类号： G11B33/04 ,  G11B33/08

CPC分类号： G11B33/08 ,  G06F1/187 ,  Y10T29/49002 ,  Y10T29/49117

摘要： A novel information storage device is disclosed and claimed. The information storage device includes a device housing with a generally rectangular bay to accommodate a disk drive. The generally rectangular bay includes a base portion and a plurality of side portions. The information storage device further includes a damping insert sheet disposed between the disk drive and the base portion. The damping insert sheet has a plurality of elastomeric cushions, for example with a cushion thickness in the range 0.5 mm to 10 mm, and a spanning sheet, for example having a sheet thickness in the range 0.02 mm to 0.35 mm. Each of the plurality of elastomeric cushions is attached to the spanning sheet. Each of the plurality of elastomeric cushions contacts and is compressed between the generally rectangular bay and the disk drive.

摘要翻译： 公开并要求保护一种新颖的信息存储装置。 信息存储装置包括具有大致矩形的托架以容纳磁盘驱动器的装置外壳。 大致矩形的隔间包括基部和多个侧部。 信息存储装置还包括设置在盘驱动器和基部之间的阻尼插入片。 阻尼插入片具有多个弹性衬垫，例如具有在0.5mm至10mm范围内的衬垫厚度，以及例如板厚度在0.02mm至0.35mm范围内的跨越片。 多个弹性垫子中的每一个附接到跨越板。 多个弹性垫子中的每一个接触并且在大致矩形的托架和磁盘驱动器之间被压缩。

公开(公告)号：US09299384B1

公开(公告)日：2016-03-29

申请号：US14225418

申请日：2014-03-25

申请人： Western Digital Technologies, Inc.

发明人： Jifang Tian ,  Jian Yang ,  Qiang Yang

IPC分类号： G11B17/022

CPC分类号： G11B17/022 ,  G11B17/0287 ,  G11B19/2045 ,  G11B25/043

摘要： A disk drive having a hub comprising a top surface and a non-circular protrusion extending upward from the top surface, a disk clamp comprising a wall portion and a non-circular opening formed through the clamp, the opening configured to receive the non-circular protrusion extending upward from the top surface of the hub; and at least one disk supported by the hub, wherein the non-circular protrusion extending upward from the top surface of the hub is inserted into the opening formed in the clamp, and wherein an outer annular portion of the clamp engages the disk to provide clamping force.

摘要翻译： 一种盘驱动器，其具有毂，该轮毂包括从顶表面向上延伸的顶表面和非圆形突出部，盘夹具包括壁部分和通过夹具形成的非圆形开口，该开口构造成接收非圆形 突起从毂的顶表面向上延伸; 以及至少一个由所述毂支撑的盘，其中从所述轮毂的顶表面向上延伸的所述非圆形突起插入形成在所述夹具中的所述开口中，并且其中所述夹具的外环形部分接合所述盘以提供夹紧 力。

公开(公告)号：US08593764B1

公开(公告)日：2013-11-26

申请号：US13672636

申请日：2012-11-08

申请人： Western Digital Technologies, Inc.

发明人： Jifang Tian ,  Qiang Yang ,  Jian Yang

IPC分类号： G11B5/127

CPC分类号： G11B5/5552 ,  G11B5/483 ,  G11B5/4853

摘要： A disk drive includes a voice coil actuator, and a rotary fine actuator that is attached to the head mounting tongue of the flexure of a suspension assembly. The head is positioned during operation of the disk drive by a novel method. An electrical current is driven through a coil of the voice coil actuator to torque it towards a desired coarse position. First and second voltages are applied across first and second piezoelectric elements attached to the flexure, respectively. The first and second voltages cause longitudinal deformation of the first and second piezoelectric elements, respectively, the longitudinal deformation consisting of expansion relative to a zero-voltage state. The first and second voltages do not switch polarity during normal operation of the first and second piezoelectric elements.

摘要翻译： 磁盘驱动器包括音圈致动器和附接到悬架组件的挠曲件的头部安装舌片上的旋转精细致动器。 通过新颖的方法在磁盘驱动器的操作期间定位磁头。 电流通过音圈致动器的线圈驱动，以将其转向所需的粗略位置。 第一和第二电压分别施加在连接到挠曲件上的第一和第二压电元件上。 第一和第二电压分别导致第一和第二压电元件的纵向变形，纵向变形由相对于零电压状态的膨胀组成。 第一和第二电压在第一和第二压电元件的正常工作期间不切换极性。

公开(公告)号：US09947370B1

公开(公告)日：2018-04-17

申请号：US14735411

申请日：2015-06-10

申请人： Western Digital Technologies, Inc.

发明人： Cheng Jin ,  Jifang Tian ,  Michael J. Herrmann ,  Zachary P. Hills

IPC分类号： G11B33/08 ,  G06F1/18

CPC分类号： G11B33/08 ,  G06F1/187

摘要： A hard disk drive assembly having a hard disk drive positioned within an external housing. Isolators formed of a resilient material, such as an elastomeric material, are interposed between the hard disk drive and an external housing. The isolators also preferably having a plurality of openings that extend there through that lower the stiffness of the isolators during small deflections such as those caused by vibrations, but large deflections, such as those caused by shocks cause the openings or holes to close there by generating greater stiffness is response to external shocks.

公开(公告)号：US09401165B1

公开(公告)日：2016-07-26

申请号：US14303955

申请日：2014-06-13

申请人： Western Digital Technologies, Inc.

发明人： Jifang Tian ,  Alain Chahwan

IPC分类号： G11B27/36 ,  G11B21/02 ,  G11B5/55

CPC分类号： G11B5/5582 ,  G11B5/54

摘要： A method and system to monitor stability of magnetic head loading and unloading beside media for a data storage system is described. A shock sensor is utilized to detect shock during preloading of a magnetic head beside recording media, during loading of a magnetic head beside recording media, during pre-unloading of a magnetic head from the recording media, and/or during unloading of a magnetic head from the recording media. In an aspect, a desired pitch static attitude (PSA) and roll static attitude (RSA) of a slider is determined. In an aspect, the stability of a magnetic head is assessed and screened while on the fly and during head gimbal assembly (HGA) design and testing to improve overall data storage device reliability.

摘要翻译： 描述了一种用于监测数据存储系统的介质旁边的磁头加载和卸载的稳定性的方法和系统。 在将磁头从记录介质预先卸载期间和/或在磁头卸载期间，使用冲击传感器来在记录介质旁边的磁头预加载期间，在记录介质旁边的磁头加载期间检测冲击 从录音媒体。 在一方面，确定滑块的期望的俯仰静止姿态（PSA）和滚动静态姿态（RSA）。 在一方面，磁头的稳定性在飞行和头部万向节组装（HGA）设计和测试期间进行评估和筛选，以提高整体数据存储设备的可靠性。

公开(公告)号：US09076471B1

公开(公告)日：2015-07-07

申请号：US14038371

申请日：2013-09-26

申请人： Western Digital Technologies, Inc.

发明人： Min Chen ,  Sanghoon Chu ,  Jifang Tian ,  Zhongjie Li ,  Hien T. Chu

IPC分类号： G11B5/02 ,  G11B5/54

CPC分类号： G11B19/042 ,  G11B19/043 ,  G11B21/12

摘要： For a disk drive involving a disk; a head; and control circuitry having a servo control system operable to actuate the head, the control circuitry may be configured to determine a magnitude of acceleration readings, the acceleration readings involving at least three degrees of freedom, wherein when a magnitude of the acceleration readings is less than a first threshold, the control circuitry confirms a free fall, wherein when the magnitude is between the first and second threshold, the control circuitry confirms a tilt drop. During the tilt drop and the free fall, the control circuitry is further configured to actuate the head to park and monitor the shock impact.

摘要翻译： 对于涉及磁盘的磁盘驱动器; 先; 以及具有可操作以致动头部的伺服控制系统的控制电路，所述控制电路可以被配置为确定加速度读数的大小，所述加速度读数涉及至少三个自由度，其中当所述加速度读数的大小小于 第一阈值，控制电路确认自由落体，其中当幅度在第一和第二阈值之间时，控制电路确认倾斜下降。 在倾斜下降和自由落体期间，控制电路进一步构造成致动头部以停放并监视冲击冲击。

公开(公告)号：US08982513B1

公开(公告)日：2015-03-17

申请号：US13931610

申请日：2013-06-28

申请人： Western Digital Technologies, Inc.

发明人： Jifang Tian ,  Jian Yang ,  Qiang Yang ,  William S. Wang ,  Yih-Jen D. Chen

IPC分类号： G11B5/596 ,  G11B5/48

CPC分类号： G11B5/4833 ,  G11B5/483

摘要： A disk drive head gimbal assembly includes a laminated flexure with a tongue having an actuated portion that rotates about an axis of rotation by expansion of a first adhered piezoelectric element relative to a second adhered piezoelectric element. A non-actuated portion of the tongue adjoins and forms a bridge between two outrigger beams, with a dimple contact location that is in contact with a dimple of the load beam and through which the axis of rotation passes. A read head is adhered, closer to its leading end than to its trailing end, to the actuated portion of the tongue. Each of the first and second piezoelectric elements has an anchored end that is adhered to the bridge, closer to the trailing end of the read head, and an opposing actuated end adhered to the actuated portion of the tongue, closer to the leading end of the read head.

摘要翻译： 磁盘驱动器头万向架组件包括具有舌部的层叠挠曲件，所述舌片具有致动部分，所述致动部分通过相对于第二附着压电元件的第一粘合压电元件的膨胀围绕旋转轴线旋转。 舌的非致动部分邻接并形成两个外伸支架梁之间的桥梁，其具有与负载梁的凹坑接触的凹坑接触位置，并且旋转轴线穿过该桥接部。 读头靠近其前端比其尾端更靠近舌头的致动部分。 第一和第二压电元件中的每一个具有粘附到桥接件，更靠近读取头的后端的锚定端，以及粘附到舌头的致动部分的相对致动端，更靠近该头部的前端 读头

公开(公告)号：US08797691B1

公开(公告)日：2014-08-05

申请号：US13931588

申请日：2013-06-28

申请人： Western Digital Technologies, Inc.

发明人： Jifang Tian ,  Jian Yang ,  Qiang Yang ,  William S. Wang ,  Yih-Jen D. Chen

IPC分类号： G11B5/596 ,  G11B21/21

CPC分类号： G11B5/483 ,  G11B5/4826

摘要： A disk drive head gimbal assembly includes a laminated flexure with a tongue having an actuated portion that rotates about an axis of rotation by expansion of an adhered piezoelectric element. A non-actuated portion of the tongue adjoins and forms a bridge between two outrigger beams, with a dimple contact location that is in contact with a dimple of the load beam and through which the axis of rotation passes. The piezoelectric element has an anchored end that is adhered to the non-actuated portion of the tongue, and an opposing actuated end adhered to the actuated portion. The actuated portion of the tongue includes first and second head mounting plates that are each adhered to the read head. Each of the head mounting plates is connected to the non-actuated portion of the tongue by an elongated compliant member that is oriented radially with respect to the dimple contact location.

摘要翻译： 磁盘驱动器头万向架组件包括具有舌部的层压挠曲件，所述舌片具有通过附着的压电元件的膨胀围绕旋转轴线旋转的致动部分。 舌的非致动部分邻接并形成两个外伸支架梁之间的桥梁，其具有与负载梁的凹坑接触的凹坑接触位置，并且旋转轴线穿过该桥接部。 压电元件具有粘附到舌的非致动部分的锚定端，并且相对的致动端粘附到致动部分。 舌头的致动部分包括第一和第二头部安装板，每个头部安装板都粘附到读取头。 每个头部安装板通过相对于凹窝接触位置径向定向的细长的柔性构件连接到舌的非致动部分。

公开(公告)号：US09361947B1

公开(公告)日：2016-06-07

申请号：US14735461

申请日：2015-06-10

申请人： Western Digital Technologies, Inc.

发明人： Baekho Heo ,  Cheng Jin ,  Sara Sahebjam-Atabaki ,  Jifang Tian ,  Zachary P. Hills

IPC分类号： G11B33/08 ,  G11B19/20

CPC分类号： G11B33/08 ,  G11B19/2018 ,  G11B33/025

摘要： A hard disk drive assembly having a hard disk drive positioned within an enclosure. A shock support is interposed between the hard disk drive and at least one wall of the enclosure so that external shocks on the enclosure are transmitted through the shock support. The shock support can be either a rigid support made of metal or a resilient support made of elastomeric material.

摘要翻译： 具有位于外壳内的硬盘驱动器的硬盘驱动器组件。 在硬盘驱动器和外壳的至少一个壁之间插入有冲击支撑，使得外壳上的外部冲击通过冲击支撑传递。 冲击支撑件可以是由金属制成的刚性支撑件或由弹性体材料制成的弹性支撑件。

公开(公告)号：US09142225B1

公开(公告)日：2015-09-22

申请号：US14308373

申请日：2014-06-18

申请人： Western Digital Technologies, Inc.

发明人： Min Chen ,  Alexander Babinski ,  Yanan Huang ,  Young-Hoon Kim ,  Duc T. Phan ,  Jifang Tian

IPC分类号： G11B5/09 ,  G11B5/55

CPC分类号： G11B5/5539 ,  G11B5/483 ,  G11B5/556

摘要： An apparatus includes: a media; a head over the media; a primary-actuator coupled to the head; and control circuitry, coupled to the primary-actuator and a secondary-actuator, configured to limit a secondary-actuator slew rate.

摘要翻译： 一种装置包括：媒体; 媒体头 耦合到头部的主致动器; 以及耦合到初级致动器和辅助致动器的控制电路，其被配置为限制辅助致动器转换速率。