公开(公告)号：US5844748A

公开(公告)日：1998-12-01

申请号：US719589

申请日：1996-09-25

申请人： John C. Dunfield ,  Klaus Kloeppel ,  Robert M. Pelstring ,  Michael Raffetto ,  Donald J. MacLeod ,  Frederick F. Kazmierczak ,  Clifford T. Jue

发明人： John C. Dunfield ,  Klaus Kloeppel ,  Robert M. Pelstring ,  Michael Raffetto ,  Donald J. MacLeod ,  Frederick F. Kazmierczak ,  Clifford T. Jue

IPC分类号： G11B17/02 ,  G11B19/20 ,  G11B25/04 ,  H02K11/00 ,  G11B33/14

CPC分类号： G11B19/2009 ,  G11B17/02 ,  G11B25/043 ,  H02K11/40

摘要： A disc drive for storing and retrieving data from at least one memory storage disc includes a drive base and a spindle motor. The spindle motor includes a rotor hub, a shaft, a bearing unit. The bearing unit rotatably supports the rotor hub about an axis. A controlled resistance electrical pathway is established from the rotor hub to ground to control disc potential and to prevent excess static charge buildup. In one embodiment, the spindle motor includes structural elements made of a conducting plastic having a controlled resistance to establish a controlled resistance electrical pathway from the rotor hub to ground. In a second embodiment, the shaft of the spindle motor includes a conductive contact button electrically connected to the shaft and operatively coupled with a contact shield electrically grounded by an electrical conductor having a controlled resistance. In another embodiment, the spindle motor includes a rod made of conductive material extending from an electrically grounded contact shield and received within the shaft. An electrical pathway between the shaft and the rod is established by a conducting fluid between the rod and the shaft. Alternatively, the electrical pathway from the shaft to the rod is established by a conducting unit. The conducting unit includes a seal, a magnetic conductive material, and a ferro-fluid. The seal is positioned within the shaft. The magnetic conductive material is coupled to the rod. The ferro-fluid is supported between the seal and the magnetic conductive material.

摘要翻译： 用于从至少一个存储盘存储和检索数据的盘驱动器包括驱动基座和主轴马达。 主轴电机包括转子毂，轴，轴承单元。 轴承单元围绕轴线可旋转地支撑转子毂。 从转子毂到地面建立一个受控制的电阻电路，以控制盘电位，并防止过多的静电积累。 在一个实施例中，主轴电动机包括由具有受控电阻的导电塑料制成的结构元件，以建立从转子毂到地面的受控电阻电路径。 在第二实施例中，主轴电机的轴包括电连接到轴的导电接触按钮，并且与通过具有受控电阻的电导体电接地的接触屏蔽可操作地耦合。 在另一个实施例中，主轴电动机包括由导电材料制成的杆，导电材料从电接地触点屏蔽延伸并被接收在轴内。 轴和杆之间的电路通过杆和轴之间的导电流体建立。 或者，通过导电单元建立从轴到杆的电路径。 导电单元包括密封件，导电材料和铁液。 密封件位于轴内。 磁性导电材料连接到杆上。 铁素体被支撑在密封件和导电材料之间。

公开(公告)号：US5729404A

公开(公告)日：1998-03-17

申请号：US611285

申请日：1996-03-06

申请人： John C. Dunfield ,  Klaus Kloeppel ,  Robert M. Pelstring ,  Michael Raffetto ,  Donald J. MacLeod ,  Frederick F. Kazmierczak ,  Clifford T. Jue

发明人： John C. Dunfield ,  Klaus Kloeppel ,  Robert M. Pelstring ,  Michael Raffetto ,  Donald J. MacLeod ,  Frederick F. Kazmierczak ,  Clifford T. Jue

IPC分类号： G11B17/02 ,  G11B19/20 ,  G11B25/04 ,  H02K11/00 ,  G11B33/14

CPC分类号： G11B19/2009 ,  G11B17/02 ,  G11B25/043 ,  H02K11/40

摘要： A disc drive for storing and retrieving data from at least one memory storage disc includes a drive base and a spindle motor. The spindle motor includes a rotor hub, a shaft, a bearing unit. The bearing unit rotatably supports the rotor hub about an axis. A controlled resistance electrical pathway is established from the rotor hub to ground to control disc potential and to prevent excess static charge buildup. In one embodiment, the spindle motor includes structural elements made of a conducting plastic having a controlled resistance to establish a controlled resistance electrical pathway from the rotor hub to ground. In a second embodiment, the shaft of the spindle motor includes a conductive contact button electrically connected to the shaft and operatively coupled with a contact shield electrically grounded by an electrical conductor having a controlled resistance. In another embodiment, the spindle motor includes a rod made of conductive material extending from an electrically grounded contact shield and received within the shaft. An electrical pathway between the shaft and the rod is established by a conducting fluid between the rod and the shaft. Alternatively, the electrical pathway from the shaft to the rod is established by a conducting unit. The conducting unit includes a seal, a magnetic conductive material, and a ferro-fluid. The seal is positioned within the shaft. The magnetic conductive material is coupled to the rod. The ferro-fluid is supported between the seal and the magnetic conductive material.

摘要翻译： 用于从至少一个存储盘存储和检索数据的盘驱动器包括驱动基座和主轴马达。 主轴电机包括转子毂，轴，轴承单元。 轴承单元围绕轴线可旋转地支撑转子毂。 从转子毂到地面建立一个受控制的电阻电路，以控制盘电位，并防止过多的静电积累。 在一个实施例中，主轴电动机包括由具有受控电阻的导电塑料制成的结构元件，以建立从转子毂到地面的受控电阻电路径。 在第二实施例中，主轴电机的轴包括电连接到轴的导电接触按钮，并且与通过具有受控电阻的电导体电接地的接触屏蔽可操作地耦合。 在另一个实施例中，主轴电动机包括由导电材料制成的杆，导电材料从电接地触点屏蔽延伸并被接收在轴内。 轴和杆之间的电路通过杆和轴之间的导电流体建立。 或者，通过导电单元建立从轴到杆的电路径。 导电单元包括密封件，导电材料和铁液。 密封件位于轴内。 磁性导电材料连接到杆上。 铁素体被支撑在密封件和导电材料之间。

公开(公告)号：US5485331A

公开(公告)日：1996-01-16

申请号：US129655

申请日：1993-09-30

申请人： John C. Dunfield ,  Klaus Kloeppel ,  Robert M. Pelstring ,  Donald J. Macleod ,  Michael Raffetto ,  Frederick F. Kazmierczak

发明人： John C. Dunfield ,  Klaus Kloeppel ,  Robert M. Pelstring ,  Donald J. Macleod ,  Michael Raffetto ,  Frederick F. Kazmierczak

IPC分类号： G11B17/02 ,  G11B19/20 ,  G11B25/04 ,  H02K11/00 ,  G11B33/14

CPC分类号： G11B19/2009 ,  G11B17/02 ,  G11B25/043 ,  H02K11/40

摘要： A disc drive for storing and retrieving data from at least one memory storage disc includes a drive base and a spindle motor. The spindle motor includes a rotor hub, a shaft, a bearing sleeve, and a bearing unit. The bearing unit is operably coupled to the rotor hub and includes an inner race secured to the shaft, an outer race secured to the bearing sleeve, and bearing balls fitted between the inner race and the outer race. The bearing balls rotatably support the rotor hub about an axis. At least one structural element of the spindle motor has a high resistivity so as to electrically isolate the hub from the base. In another embodiment, the drive base has an interface surface for coupling with the spindle motor. The interface surface includes a layer of high resistivity material. In another embodiment, the bearing ball is made of ceramic or ruby material to improve performance characteristics. In yet another embodiment, an insert is inserted between the bearing sleeve and the shaft to improve performance characteristics.

摘要翻译： 用于从至少一个存储盘存储和检索数据的盘驱动器包括驱动基座和主轴马达。 主轴电动机包括转子毂，轴，轴承套和轴承单元。 所述轴承单元可操作地联接到所述转子轮毂并且包括固定到所述轴的内座圈，固定到所述轴承套筒的外座圈和装配在所述内座圈和所述外座圈之间的轴承座。 轴承滚珠围绕轴线可旋转地支撑转子毂。 主轴电动机的至少一个结构元件具有高电阻率，从而将轮毂与基座电隔离。 在另一个实施例中，驱动基座具有用于与主轴电动机连接的接口表面。 界面表面包括一层高电阻率的材料。 在另一个实施例中，轴承球由陶瓷或红宝石材料制成以改善性能特征。 在另一个实施例中，插入件插入到轴承套筒和轴之间以改善性能特征。

公开(公告)号：US5982581A

公开(公告)日：1999-11-09

申请号：US420441

申请日：1995-04-10

申请人： Frederick F. Kazmierczak ,  Michael K. Andrews ,  Michael Raffetto

发明人： Frederick F. Kazmierczak ,  Michael K. Andrews ,  Michael Raffetto

IPC分类号： G11B17/028 ,  G11B17/022 ,  G11B17/038

CPC分类号： G11B17/0284 ,  G11B17/0287

摘要： The present invention includes a data disc support assembly for supporting a data disc relative to a head so data on a surface of the disc is accessible by the head. The support assembly includes a hub which has first and second axial ends and a flange extending from the second axial end. The flange supports the data disc. A clamp is connected to the hub to rigidly connect the data disc to the hub. The clamp has a first generally annular portion contacting the data disc and a second generally annular portion extending axially away from the hub beyond the first annular portion. The second annular portion is spaced from the data disc by a distance greater than the height of the head.

摘要翻译： 本发明包括用于相对于头部支撑数据盘的数据盘支撑组件，因此盘的表面上的数据可被头部访问。 支撑组件包括具有第一和第二轴向端部以及从第二轴向端部延伸的凸缘的毂。 法兰支持数据光盘。 夹具连接到集线器，以将数据盘刚性连接到集线器。 所述夹具具有接触所述数据盘的第一大致环形部分和从所述轮毂轴向延伸超过所述第一环形部分延伸的第二大致环形部分。 第二环形部分与数据盘间隔大于头部高度的距离。