公开(公告)号：US07440216B2

公开(公告)日：2008-10-21

申请号：US10455507

申请日：2003-06-04

申请人： Kai Wu ,  Tamon Kasajima ,  Masashi Shiraishi ,  Ping Shang

发明人： Kai Wu ,  Tamon Kasajima ,  Masashi Shiraishi ,  Ping Shang

IPC分类号： G11B21/02 ,  G11B5/58 ,  G11B21/24

CPC分类号： G11B5/5552

摘要： The invention relates to a microactuator comprising a movable structure having a symmetric axis about which the movable structure are divided into two parts which can produce the same movement but in opposite directions; two active arms built with piezoelectric material; two stationary structures to connect the two active arms at their two ends, respectively. The invention also relates to a disk drive suspension which is incorporated with the microactuator.

摘要翻译： 本发明涉及一种微致动器，其包括具有对称轴的可移动结构，所述可移动结构围绕所述可移动结构分成两部分，所述两部分可以产生相同的运动但是在相反的方向上; 两个用压电材料制成的主动臂; 两个固定结构分别在两端连接两个活动臂。 本发明还涉及一种与微型致动器并入的磁盘驱动器悬架。

公开(公告)号：US07016155B2

公开(公告)日：2006-03-21

申请号：US10842555

申请日：2004-05-11

申请人： Tamon Kasajima ,  Masashi Shiraishi

发明人： Tamon Kasajima ,  Masashi Shiraishi

IPC分类号： G11B5/60

CPC分类号： G11B33/08 ,  G11B5/4826

摘要： A vibration-canceling mechanism includes a vibration transfer member of a plane shape inserted between a vibration-origination system having at least one resonance frequency and an object to which a vibration is applied from the vibration-origination system. The vibration transfer member has a resonance frequency equal to or near the at least one resonance frequency of the vibration-origination system. A center of one end section of the vibration transfer member is coupled by a single arm section to a center of the other end section of the vibration transfer member. The one end section of the vibration transfer member is fixed to the vibration-origination system and the other end section of the vibration transfer member is fixed to the object so that an apparent vibration of the object is substantially canceled by a resonance of the vibration transfer member.

公开(公告)号：US06972929B2

公开(公告)日：2005-12-06

申请号：US10649740

申请日：2003-08-28

申请人： Tamon Kasajima ,  Masashi Shiraishi

发明人： Tamon Kasajima ,  Masashi Shiraishi

IPC分类号： G11B5/00 ,  G11B5/17 ,  G11B5/31

CPC分类号： G11B5/313 ,  G11B5/17 ,  G11B2005/0013

摘要： A thin-film magnetic head includes an insulation gap, a pair of yoke layers with one ends and the other ends, respectively, the one ends constituting magnetic poles separated with each other by the insulation gap, the other ends being magnetically coupled with each other, a coil conductor wound around at least one of the pair of yoke layers, first and second trace conductors with one ends electrically connected to both ends of the coil conductor, respectively, and first and second connection bumps electrically connected to the other ends of the first and second trace conductors, respectively. The first trace conductor includes a lower conductor layer and an upper conductor layer connected in parallel with each other, the second trace conductor including a lower conductor layer and an upper conductor layer connected in parallel with each other. The upper conductor layer of the first trace conductor and the lower conductor layer of the second trace conductor are arranged from top to bottom to face to each other. The upper conductor layer of the second trace conductor and the lower conductor layer of the first trace conductor are arranged from top to bottom to face to each other.

摘要翻译： 薄膜磁头包括绝缘间隙，分别具有一端和另一端的一对磁轭层，构成磁极的一端通过绝缘间隙彼此分离，另一端彼此磁耦合 缠绕在所述一对磁轭层中的至少一个磁轭层上的线圈导体，分别与所述线圈导体的两端电连接的一端的第一和第二轨迹导体，以及与所述线圈导体的另一端电连接的第一和第二连接凸块 第一和第二迹线导体。 第一迹线导体包括彼此并联连接的下导体层和上导体层，第二迹线导体包括彼此并联连接的下导体层和上导体层。 第一迹线导体的上导体层和第二导线导体的下导体层从上到下布置成彼此面对。 第二迹线导体的上导体层和第一迹线导体的下导体层从上到下布置成彼此面对。

公开(公告)号：US06633458B2

公开(公告)日：2003-10-14

申请号：US09811113

申请日：2001-03-16

申请人： Kai Wu ,  Tamon Kasajima ,  Masashi Shiraishi ,  Ping Shang

发明人： Kai Wu ,  Tamon Kasajima ,  Masashi Shiraishi ,  Ping Shang

IPC分类号： G11B2124

CPC分类号： G11B5/5552

摘要： The invention relates to a microactuator comprising a movable structure having a symmetric axis about which the movable structure are divided into two parts which can produce the same movement but in opposite directions; two active arms built with piezoelectric material; two stationary structures to connect the two active arms at their two ends, respectively. The invention also relates to a disk drive suspension which is incorporated with the microactuator.

摘要翻译： 本发明涉及一种微致动器，其包括具有对称轴的可移动结构，所述可移动结构围绕所述可移动结构分成两部分，所述两部分可以产生相同的运动但是在相反的方向上; 两个用压电材料制成的主动臂; 两个固定结构分别在两端连接两个活动臂。 本发明还涉及一种与微型致动器并入的磁盘驱动器悬架

公开(公告)号：US06989949B2

公开(公告)日：2006-01-24

申请号：US10346056

申请日：2003-01-17

申请人： Tsz Lok Cheng ,  Tamon Kasajima ,  Masashi Shiraishi ,  Katsuhiko Tomita ,  Takashi Honda ,  Takeshi Wada

发明人： Tsz Lok Cheng ,  Tamon Kasajima ,  Masashi Shiraishi ,  Katsuhiko Tomita ,  Takashi Honda ,  Takeshi Wada

IPC分类号： G11B27/36

CPC分类号： G11B5/455 ,  G11B2005/001

摘要： A method of testing a performance of the HGA has a step of writing information from the at least one thin-film magnetic head element onto a magnetic disk with driving the actuator for displacement by applying an alternating drive signal to the actuator, a step of reading out the information of at least one rotation of the magnetic disk by the at least one thin-film magnetic head element without driving the actuator for displacement, a step of storing the information read-out from the magnetic disk as a read-out information along a disk-rotating direction, a step of moving the HGA toward an off-track direction by a predetermined distance, a step of repeatedly executing the reading, storing and moving steps to obtain two-dimensional read-out information along the disk-rotating direction and the off-track direction, and a step of determining, from the two-dimensional read-out information, an off-track position where the read-out information becomes maximum at each position along the disk-rotating direction, the determined off-track positions being recognized as displaced positions of the actuator in response to the applied alternating drive signal.

摘要翻译： 测试HGA的性能的方法具有将信息从至少一个薄膜磁头元件写入到磁盘上的步骤，通过向致动器施加交替的驱动信号来驱动用于位移的致动器，读取步骤 通过所述至少一个薄膜磁头元件输出磁盘的至少一圈的信息，而不驱动用于移位的致动器;将从磁盘读出的信息作为读出信息存储的步骤 盘旋转方向，将偏移方向移动到离轨道方向预定距离的步骤;重复执行读取，存储和移动步骤以沿盘旋转方向获得二维读出信息的步骤 和偏离磁道方向的步骤，以及从二维读出信息确定读出信息在沿磁盘的每个位置处变为最大的偏离磁道位置的步骤， 响应于所施加的交替驱动信号，所确定的离轨位置被识别为致动器的位移位置。

公开(公告)号：US06980396B2

公开(公告)日：2005-12-27

申请号：US10648597

申请日：2003-08-27

申请人： Tamon Kasajima ,  Masashi Shiraishi

发明人： Tamon Kasajima ,  Masashi Shiraishi

IPC分类号： G11B5/17 ,  G11B5/31

CPC分类号： G11B5/313 ,  G11B5/17 ,  Y10T428/11

摘要： A thin-film magnetic head includes an insulation gap, first and second yoke layers with first and second ends, respectively, the first ends constituting magnetic poles separated from each other by the insulation gap, the second ends being magnetically coupled with each other, and a coil conductor constituted by a plurality of single layer turns, for generating magnetic field and applying the generated magnetic field into the first and second yoke layers. Each turn of the coil conductor includes a first section, a second section with one end coupled with one end of the first section, and a third section with one end coupled with the other end of the second section. The third section travels to pass outside of the first yoke layer in parallel with the surface of the first yoke layer, and to extend over the first yoke layer.

摘要翻译： 薄膜磁头包括绝缘间隙，分别具有第一和第二端的第一和第二磁轭层，构成通过绝缘间隙彼此分离的磁极的第一端，第二端彼此磁耦合， 由多个单层匝构成的用于产生磁场并将所产生的磁场施加到第一和第二磁轭层中的线圈导体。 线圈导体的每一圈包括第一部分，第一部分，其一端与第一部分的一端相连，第三部分的一端与第二部分的另一端相连。 第三部分行进以与第一磁轭层的表面平行地通过第一磁轭层的外部，并且延伸越过第一磁轭层。

公开(公告)号：US06934127B2

公开(公告)日：2005-08-23

申请号：US10382903

申请日：2003-03-07

申请人： Ming Gao Yao ,  Masashi Shiraishi ,  Tamon Kasajima

发明人： Ming Gao Yao ,  Masashi Shiraishi ,  Tamon Kasajima

IPC分类号： G11B5/596 ,  G11B5/55 ,  G11B5/58 ,  G11B21/10 ,  G11B21/21 ,  G11B5/56

CPC分类号： G11B5/5552

摘要： A precise positioning actuator for precisely positioning at least one head element is provided with a base and a pair of movable arms capable of displacing in response to a drive signal applied to the actuator. The pair of movable arms extend from the base for catching a head slider with at least one head element in a space between the pair of movable arms. Each of the pair of movable arms includes an arm member made of an elastic sintered ceramic and having substantially the same cross sectional shape from a root thereof to a top end thereof, a piezoelectric element formed on a side surface of the arm member and a protrusion additionally formed on an inside surface of the arm member near its top end section. The protrusion has tapered surfaces. Side surfaces of the head slider are adhered to the inside surfaces of the arm members at the protrusions and within regions between the protrusions and top ends of the arm members.

摘要翻译： 用于精确地定位至少一个头元件的精确定位致动器设置有基部和能够响应于施加到致动器的驱动信号而移位的一对可动臂。 一对可动臂从底座延伸，用于在一对可动臂之间的空间中具有至少一个头部元件捕捉头部滑块。 一对可动臂中的每一个包括由弹性烧结陶瓷制成的臂构件，并且具有从其根部到其顶端基本相同的横截面形状，形成在臂构件的侧表面上的压电元件和突起 另外形成在靠近其顶端部分的臂构件的内表面上。 突起具有锥形表面。 头部滑块的侧表面在突出部分和臂部件的突起和顶端之间的区域内粘附到臂构件的内表面。

公开(公告)号：US06856070B2

公开(公告)日：2005-02-15

申请号：US10632638

申请日：2003-08-01

申请人： Zhihong Wang ,  Tamon Kasajima ,  Masashi Shiraishi ,  Ping Shang ,  Kai Wu

发明人： Zhihong Wang ,  Tamon Kasajima ,  Masashi Shiraishi ,  Ping Shang ,  Kai Wu

IPC分类号： G11B5/55 ,  G11B21/10 ,  G11B21/20 ,  H01L41/04 ,  H01L41/09 ,  H02N2/00 ,  H02N2/10

CPC分类号： G11B5/5552 ,  G11B21/106 ,  G11B21/20 ,  H01L41/096 ,  H02N2/10

摘要： A piezoelectric actuator is disclosed including an annular piezoelectric element and a base. There is a gap along the radial direction of the annular piezoelectric element. One of the two ends, i.e., the fixed end of the said annular element, is connected to the base, while the other end is free. The base is made of piezoelectric materials. Furthermore, the annular element is divided into two or more annular parts along the direction of its circumference by the electrode patterns applied on its two opposite surface and/or its polarization directions. When driving voltages are applied, the actuator can generate roughly a rotary motion around the center of the annular piezoelectric element. The annular rotary actuator could be either a single plate or with multilayer structure. The present invention further relates to a dual stage head positioning actuator system of a hard disk drive with a plurality of disks and a plurality of vertically aligned head sliders mounted on distal ends of a plurality of suspensions via the annular piezoelectric actuators.

摘要翻译： 公开了一种压电致动器，其包括环形压电元件和基座。 沿着环形压电元件的径向存在间隙。 两个端部中的一个，即所述环形元件的固定端连接到基座，而另一端是自由的。 基座由压电材料制成。 此外，通过施加在其两个相对表面和/或其偏振方向上的电极图案，环形元件沿其圆周方向被分成两个或更多个环形部分。 当施加驱动电压时，致动器可围绕环形压电元件的中心大致产生旋转运动。 环形旋转致动器可以是单板或具有多层结构。 本发明还涉及具有多个盘的硬盘驱动器的双级头定位致动器系统和经由环形压电致动器安装在多个悬架的远端上的多个垂直对准的头滑块。

公开(公告)号：US06771466B2

公开(公告)日：2004-08-03

申请号：US10179385

申请日：2002-06-26

申请人： Tamon Kasajima ,  Masashi Shiraishi

发明人： Tamon Kasajima ,  Masashi Shiraishi

IPC分类号： G11B560

CPC分类号： G11B5/4826 ,  G11B33/08

摘要： A vibration-canceling mechanism includes a vibration transfer member of a plane shape inserted between a vibration-origination system having at least one resonance frequency and an object to which a vibration is applied from the vibration-origination system. The vibration transfer member has a resonance frequency equal to or near the at least one resonance frequency of the vibration-origination system. One end section of the vibration transfer member is fixed to the vibration-origination system and the other end section of the vibration transfer member is fixed to the object so that an apparent vibration of the object is substantially canceled by a resonance of the vibration transfer member.

摘要翻译： 振动消除机构包括插入在具有至少一个共振频率的振动起始系统与从振动发生系统施加振动的物体之间的平面形状的振动传递部件。 振动传递部件具有等于或接近振动发生系统的至少一个谐振频率的谐振频率。 振动传递构件的一个端部固定到振动发生系统，并且振动传递构件的另一端部固定到物体上，使得物体的表观振动基本上被振动传递构件的共振消除 。

公开(公告)号：US06680826B2

公开(公告)日：2004-01-20

申请号：US09810821

申请日：2001-03-16

申请人： Masashi Shiraishi ,  Tamon Kasajima ,  Kai Wu ,  Zhihong Wang ,  Weiguang Zhu ,  Xi Yao

发明人： Masashi Shiraishi ,  Tamon Kasajima ,  Kai Wu ,  Zhihong Wang ,  Weiguang Zhu ,  Xi Yao

IPC分类号： G11B2124

CPC分类号： H01L41/096 ,  G11B5/5552

摘要： A piezoelectric device comprises an integral body of piezoelectric material having a length and width greater than its thickness; wherein the device further includes, in contact with the body, respective pairs of electrodes, wherein the electrodes of each pair are opposed in the thickness direction, wherein the body deflects along said transverse direction when a voltage is applied to the electrode pair. The present invention further provisdes a disk drive suspension and a head gimbal assembly.

摘要翻译： 一种压电装置，包括具有大于其厚度的长度和宽度的压电材料的整体; 其中所述装置还包括与所述主体接触的各对电极，其中每对电极在厚度方向上相对，其中当电压施加到所述电极对时，所述主体沿着所述横向方向偏转。 本发明进一步限制了磁盘驱动器悬架和磁头万向架组件。