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    DUAL SPINDLE MOTOR HARD DISK DRIVE
    1.
    发明申请
    DUAL SPINDLE MOTOR HARD DISK DRIVE 审中-公开

    公开(公告)号：WO2023080933A1

    公开(公告)日：2023-05-11

    申请号：PCT/US2022/035036

    申请日：2022-06-25

    Applicant: WESTERN DIGITAL TECHNOLOGIES, INC.

    Inventor： HAN, Nan-Hsun ,  LEE, Brian, K. ,  KASTLER, Danny, J.

    IPC: G11B5/48 ,  G11B33/12 ,  G11B25/04 ,  G11B19/20 ,  G11B5/55

    Abstract: A dual disk spindle motor hard disk drive includes a first portion having a first spindle motor and a first disk media stack mounted thereon and housed in a first enclosure, and a second portion having a coaxial second spindle motor and a second disk media stack mounted thereon and housed in a second enclosure, where the second portion further includes both the first actuator and head sliders corresponding to the first disk stack as well as the second actuator and head sliders corresponding to the second disk stack. The first and second portions are coupled together such that the open sides of the enclosures mate, referred to herein as a clamshell configuration, and each separate spindle motor is configured to operate independently of the other. With independent control of multiple spindle motors, various control functions may be utilized to address power consumption and temperature control.

    REMOVABLE DISK CLAMP FOR READ-WRITE DEVICE IN ARCHIVAL DATA STORAGE LIBRARY
    2.
    发明申请
    REMOVABLE DISK CLAMP FOR READ-WRITE DEVICE IN ARCHIVAL DATA STORAGE LIBRARY 审中-公开

    公开(公告)号：WO2023033881A1

    公开(公告)日：2023-03-09

    申请号：PCT/US2022/028224

    申请日：2022-05-07

    Applicant: WESTERN DIGITAL TECHNOLOGIES, INC.

    Inventor： HIRANO, Toshiki

    IPC: G11B19/20 ,  G11B17/04 ,  G11B25/04

    Abstract: A removable disk clamp assembly for mounting disk media on a motor-driven spindle of a magnetic read-write device includes a disk clamp and a mechanism for generating a predetermined force to press the disk media to a flange of the spindle such that the predetermined force can be repeatedly overcome by an applied counterforce to remove the disk clamp from engagement with a hub of the spindle. Such a mechanism may include a spring-loaded removable disk clamp assembly or a magnetic removable disk clamp assembly, and whereby a vacuum-driven chuck may be employed for disk and clamp handling purposes, all of which are suitable for implementation and use in a read-write device configured for use in an archival data storage system library such as in a cleanroom storage system.

    READ-WRITE DEVICE FOR AN ARCHIVAL DATA STORAGE LIBRARY
    3.
    发明申请
    READ-WRITE DEVICE FOR AN ARCHIVAL DATA STORAGE LIBRARY 审中-公开

    公开(公告)号：WO2023022765A1

    公开(公告)日：2023-02-23

    申请号：PCT/US2022/027964

    申请日：2022-05-06

    Applicant: WESTERN DIGITAL TECHNOLOGIES, INC.

    Inventor： HIRANO, Toshiki

    IPC: G11B19/20 ,  G11B17/04 ,  G11B25/04

    Abstract: A magnetic read-write device includes a disk spindle on which disk media are rotatably mounted, an enclosure in which the spindle is housed, an opening/closing mechanism such as a cover configured for opening to provide access to the spindle and for closing to contain particles that may be generated during operation of the device, and a seal configured for sealing the enclosure when the opening/closing mechanism is closed. The device may further include a pre-loaded hinge coupling the cover with the enclosure, and a loading mechanism such as a spring coupled with the hinge and configured for biasing the cover to a closed position and for applying a sealing force to the seal at an interface of the cover and the enclosure. This type of device may be implemented for use in an archival data storage system library such as in a cleanroom storage system.

    POWER MANAGEMENT FOR DATA STORAGE DEVICE
    4.
    发明申请
    POWER MANAGEMENT FOR DATA STORAGE DEVICE 审中-公开
    数据存储设备的电源管理

    公开(公告)号：WO2015066088A1

    公开(公告)日：2015-05-07

    申请号：PCT/US2014/062741

    申请日：2014-10-28

    Applicant: WESTERN DIGITAL TECHNOLOGIES, INC.

    Inventor： HASFAR, Zaihas Amri Fahdzan ,  ONG, Choo-Bhin ,  CHENG, Jonathan K.

    IPC: G11B19/20

    CPC classification number: G11B25/043 ,  G11B19/044 ,  G11B19/2054

    Abstract: A data storage device (DSD) enters a high spindle suppression (HSS) mode to reduce instances of rotation of a spindle motor of the DSD during the HSS mode. When a read command is received from a host to read requested data from the DSD in the HSS mode, it is determined whether the requested data is not stored in a solid state memory of the DSD. If it is determined that the requested data is not stored in the solid state memory, the spindle motor is controlled to rotate a disk of the DSD. The requested data is read from the disk and stored in the solid state memory before completing transfer of the requested data to the host.

    Abstract translation: 数据存储设备（DSD）进入高主轴抑制（HSS）模式，以在HSS模式期间减少DSD的主轴电机的旋转实例。 当从主机接收到读取命令以在HSS模式下从DSD读取所请求的数据时，确定所请求的数据是否不存储在DSD的固态存储器中。 如果确定所请求的数据未被存储在固态存储器中，则主轴电动机被控制以旋转DSD的盘。 在将所请求的数据传送到主机之前，请求的数据从磁盘读取并存储在固态存储器中。

    DEVICE FOR ROTARY DRIVING OF A ROUND DISK
    6.
    发明申请
    DEVICE FOR ROTARY DRIVING OF A ROUND DISK 审中-公开
    圆盘旋转驱动装置

    公开(公告)号：WO2015012685A2

    公开(公告)日：2015-01-29

    申请号：PCT/NL2014050497

    申请日：2014-07-21

    Applicant: ECO LOGICAL ENTPR B V

    Inventor： BERTELS AUGUSTINUS WILHELMUS MARIA

    IPC: G11B19/20 ,  G11B5/55 ,  G11B7/085

    CPC classification number: G11B19/2009 ,  G11B5/5573 ,  G11B5/5578

    Abstract: A device for rotary driving of a round disk, for instance a memory disk of a computer, comprises a stator disposed fixedly relative to a frame and a rotor rotatably drivable relative to the stator. According to the invention the rotor comprises a concentric ring to which the peripheral edge of the disk is connected. The stator has an encircling recess, the form of which corresponds to that of the ring such that the ring fits with clearance into the recess. The rotor is provided with two collars of magnetically active elements in angularly equidistant arrangement, and the stator comprises electromagnets disposed at the same angular distances. The arrangement is such that the rotor and the stator together form an annular induction motor. The rotor is preferably suspended magnetically during operation.

    Abstract translation: 用于旋转驱动圆盘（例如计算机的存储盘）的装置包括相对于框架固定的定子和相对于定子可转动地驱动的转子。 根据本发明，转子包括一个同心环，圆盘的周边边缘连接着同心环。 定子具有环形凹部，其形状对应于环的凹槽，使得环与间隙配合到凹部中。 转子设置有两个角度等距离布置的磁性有源元件的两个环，定子包括以相同的角距离设置的电磁体。 该结构使得转子和定子一起形成环形感应电动机。 转子优选在操作过程中磁悬浮。

    스핀들 모터
    7.
    发明申请
    스핀들 모터 审中-公开
    主轴电机

    公开(公告)号：WO2013141622A1

    公开(公告)日：2013-09-26

    申请号：PCT/KR2013/002336

    申请日：2013-03-21

    Applicant: 주식회사 휴모테크

    Inventor： 최운호

    IPC: G11B19/20 ,  H02K5/173

    CPC classification number: G11B19/2009 ,  H02K5/1675 ,  H02K2205/03

    Abstract: 본 발명에 따른 스핀들 모터는 하부 말단 측에 오목부를 갖는 샤프트; 상기 샤프트 상부에 결합되어 상기 샤프트와 함께 회전하며 마그넷이 내주 벽면에 부착되어 있는 로터 케이스; 상기 샤프트를 회전 지지하기 위한 베어링; 상기 베어링의 하부에 결합되고, 중심부 내부에 공간부를 가지며, 유로홈이 형성된 측벽부를 갖는 서포트 와셔; 상기 베어링 및 상기 서포트 와셔의 측면 외주면에 접하여 형성되고, 상기 유로홈에 대응하는 위치에 길이방향으로 유로가 형성되어 있는 베어링 하우징; 및 상기 베어링 하우징의 외주면에 결합되는 스테이터 코어로 이루어지는 것을 특징으로 한다.

    Abstract translation: 根据本发明的主轴电动机包括：具有形成在其下端的凹部的轴; 转子壳体，其联接到所述轴的上部，使得所述转子壳体与所述轴一起旋转，所述转子壳体具有附接到其内壁的磁体; 用于可旋转地支撑轴的轴承; 支撑垫圈，其联接到所述轴承的下部并且具有形成在其中心内部的空间，所述支撑垫圈具有带有流动通道槽的侧壁; 轴承壳体，其形成为接触所述轴承和所述支撑垫圈的外表面，并且具有在对应于所述流动通道槽的点处沿长度方向形成的流动通道; 以及联接到所述轴承壳体的外表面的定子芯。

    HYDRODYNAMIC DISC DRIVE SPINDLE MOTOR HAVING HYDRO BEARING WITH LUBRICANT
    9.
    发明申请
    HYDRODYNAMIC DISC DRIVE SPINDLE MOTOR HAVING HYDRO BEARING WITH LUBRICANT 审中-公开
    具有润滑剂含水轴承的水动力盘驱动主轴电机

    公开(公告)号：WO2012030410A4

    公开(公告)日：2012-05-10

    申请号：PCT/US2011030312

    申请日：2011-03-29

    Applicant: SEAGATE TECHNOLOGY LLC ,  KHAN RAQUIB UDDIN

    Inventor： KHAN RAQUIB UDDIN

    IPC: G11B19/20

    CPC classification number: H02K7/088 ,  C10M169/04 ,  G11B19/2036

    Abstract: Disc drive spindle motor having hydro bearing including a central axis; a stationary member which is fixed with respect to a housing and coaxial with the central axis; a stator is fixed with respect to the housing; a rotatable member which is rotatable about the central axis with respect to the stationary member; a rotor supported by the rotatable member and magnetically coupled to the stator; a hydro bearing interconnecting the stationary member and the rotatable member and having working surfaces separated by a lubricating fluid. The lubricating fluid contains a synthetic ester base fluid having a viscosity index of at least 110, from 0.01% to 5% by weight, based on the total weight of the lubricating fluid, of at least one tri-C6-C14-aryl phosphate, and from 0.01% by weight to 5% by weight, based on the total weight of the synthetic ester base fluid, of at least one carbodiimide.

    Abstract translation: 具有包括中心轴线的液压轴承的盘式驱动主轴电机; 固定部件，其相对于壳体固定并与中心轴线同轴; 定子相对于壳体固定; 可相对于静止部件绕中心轴旋转的可旋转部件; 由所述可旋转构件支撑并且磁耦合到所述定子的转子; 一个互相连接固定件和可转动件的液压轴承，其工作表面被润滑液隔开。 润滑流体含有粘度指数至少为110的合成酯基础流体，基于润滑流体的总重量，0.01重量％至5重量％的至少一种三-C 6 -C 14芳基磷酸酯， 和基于合成酯基础液的总重量为0.01重量％至5重量％的至少一种碳化二亚胺。

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