Hydrodynamic bearing device and a recording disk drive equipped with it

    公开(公告)号:US20070154123A1

    公开(公告)日:2007-07-05

    申请号:US11712610

    申请日:2007-02-27

    IPC分类号: F16C32/06

    摘要: A hydrodynamic bearing device comprises a shaft bush having a substantially conical inclined dynamic pressure surface around the outer circumference thereof which is relatively rotatably inserted in a bearing sleeve having a substantially conical inclined dynamic pressure surface around the inner circumference thereof. A substantially conical inclined bearing space is created in the gap between the inclined dynamic pressure surfaces of the bearing sleeve and shaft bush. Lubricant fluid is filled inside the inclined bearing space. A proper dynamic pressure generating means is formed on at least one of the inclined dynamic pressure surfaces of the shaft bush and bearing sleeve. The lubricant fluid is pressurized by the dynamic pressure generating means to generate dynamic pressure, by which the shaft bush and the bearing sleeve are relatively elevated in the radial and thrust directions so that their rotations are supported in a non-contact manner. A fluid sealing portion is provided in the inclined bearing space to prevent the lubricant fluid from leaking outside of the inclined bearing space. A fluid pressurizing means is provided between the inclined bearing space and the fluid sealing portion to pressurize the lubricant fluid in the direction to push it toward the inside of the inclined bearing space.

    Dynamic pressure bearing device
    2.
    发明授权
    Dynamic pressure bearing device 有权
    动压轴承装置

    公开(公告)号:US07008109B2

    公开(公告)日:2006-03-07

    申请号:US10708105

    申请日:2004-02-10

    IPC分类号: F16C32/06

    摘要: A dynamic pressure bearing device includes a dynamic pressure face of a shaft member, a dynamic pressure face of a bearing member, lubricating fluid filled in a bearing space of a dynamic pressure bearing portion including a gap between the dynamic pressure faces, a dynamic pressure generation means for pressing so that the lubricating fluid generates a dynamic pressure that supports the shaft member in a non-contact manner with the bearing member and in a rotatable manner relatively to the bearing member, and a sliding surface layer having abrasion resistance provided to at least one of the dynamic pressure face of the shaft member and the dynamic pressure face of the bearing member. The sliding surface layer is made up of a resin lubricating film in which many particles of solid lubricating material is dispersed, and a maximum diameter of the particles constituting the solid lubricating material included in the sliding surface layer is smaller than a minimum gap size of the bearing space of the dynamic pressure bearing portion.

    摘要翻译: 动压轴承装置包括轴构件的动压面,轴承构件的动压面,填充在包括动压面之间的间隙的动压承受部的轴承空间中的润滑流体,动压产生 用于压制的装置,使得润滑流体产生动态压力,该动态压力以与轴承构件非接触的方式相对于轴承构件以可旋转的方式产生支撑轴构件,并且具有至少提供耐磨性的滑动表面层 轴构件的动压面和轴承构件的动压面之一。 滑动面层由分散有许多固体润滑材料颗粒的树脂润滑膜构成,并且构成包含在滑动表面层中的固体润滑材料的颗粒的最大直径小于最小间隙尺寸 动压轴承部分的轴承空间。

    Motor with dynamic pressure bearing
    5.
    发明授权
    Motor with dynamic pressure bearing 有权
    电动机带动压力轴承

    公开(公告)号:US06834996B2

    公开(公告)日:2004-12-28

    申请号:US10436897

    申请日:2003-05-13

    IPC分类号: F16C3206

    摘要: A dynamic pressure bearing motor includes a rotary shaft, a rotary hub coupled to the rotary shaft, a dynamic pressure bearing sleeve that supports the rotary shaft by dynamic pressure and has a fallout stopper flange section that protrudes outward in the radial direction, a thrust dynamic pressure bearing section formed in an axial direction between the dynamic pressure bearing sleeve and the rotary hub, and a circular ring-shaped member that surrounds an outer circumference surface of the dynamic pressure bearing sleeve. The circular ring-shaped member has a hub mounting section that connects to an end surface of the rotary hub in a region radially outside the thrust dynamic pressure bearing section, and a main body section that protrudes inward from the hub mounting section. An inner circumference surface of the hub mounting section of the circular ring-shaped member opposes in the radial direction an outer circumference surface of the fallout stopper flange section of the dynamic pressure bearing sleeve, and the main body section of the circular ring-shaped member opposes in the axial direction the fallout stopper flange section of the dynamic pressure bearing sleeve to prevent the dynamic pressure bearing sleeve from falling out in the axial direction.

    摘要翻译: 动压轴承电动机包括旋转轴,联接到旋转轴的旋转轮毂,动压轴承套筒,其通过动态压力支撑旋转轴并具有沿径向向外突出的落尘止动凸缘部分,推力动力 在动压轴承套和旋转轮毂之间沿轴向形成的压力承受部以及包围动压轴承套的外周面的圆环状部件。 圆形环状构件具有轮毂安装部,该轮毂安装部在推力动压承受部的径向外侧的区域与从轮毂安装部向内突出的主体部连接于旋转轮毂的端面。 圆环状构件的轮毂安装部的内周面在径向上与动压轴承套的分离挡块凸缘部的外周面相对,圆环状构件的主体部 在轴向方向上与动压轴承套筒的后挡板凸缘部分相反,以防止动压轴承套在轴向上脱落。

    MOTOR AND DISK DRIVE INCLUDING THE SAME
    6.
    发明申请
    MOTOR AND DISK DRIVE INCLUDING THE SAME 审中-公开
    电机和磁盘驱动器,包括它们

    公开(公告)号:US20080012443A1

    公开(公告)日:2008-01-17

    申请号:US11764966

    申请日:2007-06-19

    IPC分类号: H02K1/22 G11B5/52

    摘要: A base plate serving as a base portion of a motor has a plurality of coil-receiving portions in regions corresponding to a plurality of teeth and coils, respectively. Each coil-receiving portion receives a lower portion of a corresponding coil. The axial thickness of the base plate and that of the motor can be reduced by forming the base plate by pressing. The base plate is provided with a projection formed thereon. The projection extends generally in a direction perpendicular to a center axis of the motor between the coil-receiving portions. The projection is arranged to cross a line connecting closest portions of two coil-receiving portions to each other. Thus, a portion of the base plate having the lowest strength is reinforced and therefore the strength of the base plate is increased.

    摘要翻译: 用作电动机基座的基板分别在与多个齿和线圈对应的区域中具有多个线圈接收部分。 每个线圈接收部分接收相应线圈的下部。 通过压制形成基板,可以减小基板和电机的轴向厚度。 基板上设置有形成在其上的突起。 突起大体上在线圈接收部分之间的垂直于马达的中心轴线的方向上延伸。 突出部布置成跨越将两个线圈接收部分的最靠近的部分彼此连接的线。 因此,具有最低强度的基板的一部分被加强,因此基板的强度增加。

    Hydrodynamic bearing device and a recording disk drive equipped with it
    7.
    发明授权
    Hydrodynamic bearing device and a recording disk drive equipped with it 有权
    流体动力轴承装置和装有它的记录盘驱动器

    公开(公告)号:US07201517B2

    公开(公告)日:2007-04-10

    申请号:US10872976

    申请日:2004-06-18

    IPC分类号: F16C32/06

    摘要: A hydrodynamic bearing device comprises a shaft bush having a substantially conical inclined dynamic pressure surface around the outer circumference thereof which is relatively rotatably inserted in a bearing sleeve having a substantially conical inclined dynamic pressure surface around the inner circumference thereof. A substantially conical inclined bearing space is created in the gap between the inclined dynamic pressure surfaces of the bearing sleeve and shaft bush. Lubricant fluid is filled inside the inclined bearing space. A proper dynamic pressure generating means is formed on at least one of the inclined dynamic pressure surfaces of the shaft bush and bearing sleeve. The lubricant fluid is pressurized by the dynamic pressure generating means to generate dynamic pressure, by which the shaft bush and the bearing sleeve are relatively elevated in the radial and thrust directions so that their rotations are supported in a non-contact manner. A fluid sealing portion is provided in the inclined bearing space to prevent the lubricant fluid from leaking outside of the inclined bearing space. A fluid pressurizing means is provided between the inclined bearing space and the fluid sealing portion to pressurize the lubricant fluid in the direction to push it toward the inside of the inclined bearing space.

    摘要翻译: 一种流体动力轴承装置包括轴套,该轴套具有围绕其外圆周的基本圆锥形的倾斜动态压力表面,其相对可旋转地插入到具有围绕其内圆周的基本上圆锥形的倾斜动态压力表面的轴承套筒中。 在轴承套筒和轴套的倾斜动态压力表面之间的间隙中形成大致圆锥形的倾斜轴承空间。 润滑油填充在倾斜轴承空间内。 在轴衬和轴承套的至少一个倾斜动态压力表面上形成适当的动压产生装置。 润滑剂流体被动态压力产生装置加压以产生动态压力,通过该动压力,轴套和轴承套筒在径向和推力方向上相对地升高,使得它们的旋转以非接触的方式被支撑。 流体密封部设置在倾斜轴承空间中,以防止润滑剂流体泄漏到倾斜轴承空间的外部。 流体加压装置设置在倾斜支承空间和流体密封部分之间,以朝向倾斜轴承空间的内部的方向对润滑剂流体加压。

    Conical hydrodynamic bearing device and a recording disk drive equipped with it, and a method of manufacturing a conical hydrodynamic bearing device
    8.
    发明授权
    Conical hydrodynamic bearing device and a recording disk drive equipped with it, and a method of manufacturing a conical hydrodynamic bearing device 失效
    圆锥形流体动力轴承装置和装备有该圆锥形流体动力轴承装置的记录盘驱动装置的制造方法

    公开(公告)号:US07063463B2

    公开(公告)日:2006-06-20

    申请号:US10866207

    申请日:2004-06-10

    IPC分类号: F16C17/10 B21D53/10

    摘要: A conical hydrodynamic bearing device comprises a shaft bush having a conical inclined dynamic pressure surface around an outer circumference thereof being relatively-rotatably inserted in a bearing sleeve having a conical inclined dynamic pressure surface around an inner circumference thereof, so that a conical inclined bearing space is created in a gap between the inclined dynamic pressure surfaces of the bearing sleeve and shaft bush. A lubricant fluid is filled inside the inclined bearing space. A proper dynamic pressure generating means is formed on at least one of the inclined dynamic pressure surfaces of the shaft bush and bearing sleeve. The lubricant fluid is pressurized by the dynamic pressure generating means to generate dynamic pressure, by which the shaft bush and the bearing sleeve are relatively elevated in the radial and thrust directions so that their rotations are supported in a non-contact manner. An open angle θ1 created by a pair of generatrixes between which a plane including the center axis of the shaft bush intersects with the inclined dynamic pressure surface of the shaft bush which is set to be larger than an open angle θ2 created by a pair of generatrixes between which a plane including said center axis of the bearing sleeve intersects with the inclined dynamic pressure surface of the bearing sleeve (θ1>θ2).

    摘要翻译: 锥形流体动力轴承装置包括轴套,该轴套具有围绕其外圆周的锥形倾斜动态压力表面,其相对可旋转地插入到具有围绕其内圆周的锥形倾斜动态压力表面的轴承套筒中,使得圆锥形倾斜轴承空间 形成在轴承套筒和轴套之间的倾斜动压面之间的间隙中。 润滑剂流体填充在倾斜轴承空间的内部。 在轴衬和轴承套的至少一个倾斜动态压力表面上形成适当的动压产生装置。 润滑剂流体被动态压力产生装置加压以产生动态压力,通过该动压力,轴套和轴承套筒在径向和推力方向上相对地升高,使得它们的旋转以非接触的方式被支撑。 由一对母线产生的开放角度θ1,其中包括轴套的中心轴线的平面与轴套的倾斜动态压力表面相交,该倾斜动态压力表面被设定为大于由一对产生的开放角度θ2 母线之间包括轴承套筒的所述中心轴线的平面与轴承套筒的倾斜动态压力表面(θ1>θ2)相交。

    ROTOR HUB, MOTOR, AND RECORDING DISK DRIVING DEVICE
    9.
    发明申请
    ROTOR HUB, MOTOR, AND RECORDING DISK DRIVING DEVICE 有权
    转子集线器,电机和记录盘驱动器件

    公开(公告)号:US20070183090A1

    公开(公告)日:2007-08-09

    申请号:US11456918

    申请日:2006-07-12

    IPC分类号: G11B17/02

    CPC分类号: G11B17/0281 G11B17/0287

    摘要: A rotor hub for use in a motor installed into a recording disk driving device to spin a recording disk includes a convex portion, a disk placing portion around the convex portion, and the relief portion which is a substantially circular concave portion disposed between the convex portion and the disk placing portion. The recording disk, preferably a 1.8-inch or smaller type disk, having a center circular through-hole, is mounted on the rotor hub. When the recording disk is mounted on the rotor hub, with the bottom surface thereof abutting against a portion of the disk placing portion and an inner side surface of the center circular through-hole of the recording disk, an upper edge of the relief portion is arranged axially lower than an upper edge of the inner side surface of the center circular through-hole, and a bottom edge of the relief portion is arranged inward from an inner edge of the bottom surface of the recording disk.

    摘要翻译: 一种用于安装在记录盘驱动装置中以旋转记录盘的电动机中的电动机的转子轮毂包括凸部,围绕凸部的盘放置部以及设置在凸部之间的大致圆形的凹部的浮雕部 和盘放置部。 具有中心圆形通孔的记录盘,优选为1.8英寸或更小的盘,安装在转子毂上。 当记录盘安装在转子轮毂上时,其底表面抵靠盘片放置部分的一部分和记录盘的中心圆形通孔的内侧表面,该释放部分的上边缘是 布置成比中心圆形通孔的内侧表面的上边缘轴向地低,并且所述浮雕部分的底边缘从记录盘的底表面的内边缘向内布置。

    Motors with oil dynamic pressure bearing, oil dynamic pressure bearing devices and method for manufacturing the same
    10.
    发明授权
    Motors with oil dynamic pressure bearing, oil dynamic pressure bearing devices and method for manufacturing the same 有权
    油动压轴承电机,油动压力轴承装置及其制造方法

    公开(公告)号:US07059771B2

    公开(公告)日:2006-06-13

    申请号:US10439274

    申请日:2003-05-15

    IPC分类号: F16C17/10

    摘要: A motor with fluid dynamic pressure bearing is disclosed. The motor includes a dynamic pressure bearing member having a concave section that is concave in an axial direction, a rotary shaft that is rotatively supported by the dynamic pressure bearing, and a rotary member that is joined to the rotary shaft in one piece along a joint section between the rotary member and the rotary shaft, and rotatively driven by electromagnetic drive force, an expanded diameter section that is provided on the dynamic pressure bearing member. A fallout preventing member is provided on the rotary member, which overlaps the expanded diameter section of the dynamic pressure bearing member in the axial direction to prevent the rotary shaft from falling out of the dynamic pressure bearing member. The concave section of the rotary member opposes in the axial direction the expanded diameter section of the dynamic pressure bearing member, wherein the expanded diameter section is placed inside the concave section, and the joining section between the rotary member and the rotary shaft overlaps the expanded diameter section in the radial direction.

    摘要翻译: 公开了一种具有流体动压轴承的电动机。 电动机包括具有沿轴向凹入的凹部的动压承受部件,由动压轴承旋转地支撑的旋转轴,以及沿着接合部一体地接合到旋转轴的旋转部件 在旋转构件和旋转轴之间,由电磁驱动力旋转地驱动设置在动压承载构件上的扩径部。 在所述旋转部件上设置防尘部件,所述旋转部件与所述动压轴承部件的所述扩径部在轴向上重叠,以防止所述旋转轴从所述动压承受部件脱落。 旋转部件的凹部在轴向方向上与动压轴承部件的扩径部分相对,其中扩径部分设置在凹部内部,并且旋转部件和旋转轴之间的接合部分与膨胀的 径向截面。