公开(公告)号：US20100195248A1

公开(公告)日：2010-08-05

申请号：US12576179

申请日：2009-10-08

申请人： Takuji YAMADA ,  Yuji OMURA ,  Mitsuo KODAMA

发明人： Takuji YAMADA ,  Yuji OMURA ,  Mitsuo KODAMA

IPC分类号： G11B5/10

CPC分类号： G11B33/02 ,  F16C17/107 ,  F16C33/107 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2036 ,  H02K5/1675

摘要： A sleeve supports a shaft. A housing member is arranged so as to surround the sleeve and make the end of the sleeve protrude. A base member holds the housing member and fixes a stator core so as to surround the housing member. A hub drives a recording disk by being rotated integrally with the shaft, with a magnet being fixed to an annular portion concentric with the shaft so as to face the stator core fixed to the base member. A thrust member is rotated integrally with the hub, and a descender portion and a ring portion.

摘要翻译： 套筒支撑轴。 壳体构件被布置成围绕套筒并使套筒的端部突出。 基座构件保持壳体构件并固定定子芯以围绕壳体构件。 轮毂通过与轴一体地旋转而驱动记录盘，其中磁体被固定到与轴同心的环形部分，以面对固定到基座构件的定子芯。 推力构件与毂一体旋转，下降部分和环部分。

公开(公告)号：US20090284866A1

公开(公告)日：2009-11-19

申请号：US12066597

申请日：2006-09-11

申请人： Kenji Ito ,  Fuyuki Ito

发明人： Kenji Ito ,  Fuyuki Ito

IPC分类号： G11B17/02 ,  F16C32/06 ,  B29C45/14 ,  B32B37/12

CPC分类号： F16C17/107 ,  F16C33/107 ,  F16C2370/12 ,  G11B19/2036 ,  H02K5/1675 ,  Y10T29/49639

摘要： Provided is a fluid bearing device with a hub part having high molding precision and dimensional stability and capable of being produced at low cost. An annular gate (14) is formed at a portion of a cavity (15) corresponding to an outer peripheral edge portion of a lower end surface (10c1) of a flange part (10c), and a molten resin (P) is filled into the cavity (15) through the annular gate (14) to form a hub part (10) made of resin. The hub part (10) molded by the injection molding exhibits a radial resin orientation through an entire periphery thereof. Further, an annular gate trace (16) is formed at the outer peripheral edge portion of the lower end surface (10c1) of the flange part (10c) of the hub part (10).

摘要翻译： 本发明提供一种具有轮毂部件的流体轴承装置，其具有高的成型精度和尺寸稳定性并能够以低成本制造。 在与凸缘部（10c）的下端面（10c1）的外周缘部对应的空腔（15）的一部分形成环状的浇口（14），将熔融树脂（P）填充到 所述腔（15）穿过所述环形门（14）以形成由树脂制成的轮毂部分（10）。 通过注塑成型的轮毂部件（10）通过其整个周边呈径向的树脂取向。 此外，在毂部（10）的凸缘部（10c）的下端面（10c1）的外周缘部形成有环状的栅极迹线（16）。

公开(公告)号：US20090161253A1

公开(公告)日：2009-06-25

申请号：US12333346

申请日：2008-12-12

申请人： Hirokazu SHIRAI ,  Yoichi SEKII ,  Masato GOMYO

发明人： Hirokazu SHIRAI ,  Yoichi SEKII ,  Masato GOMYO

IPC分类号： G11B17/02 ,  F16C32/06 ,  H02K5/16

CPC分类号： F16C17/10 ,  F16C33/107 ,  F16C35/02 ,  F16C2370/12 ,  G11B19/2036 ,  H02K5/1675

摘要： A bearing mechanism includes a cylindrical bottom-closed sleeve unit; a shaft unit radially supported by the sleeve unit via a lubricant; and an elastic thrust plate on an inner bottom surface of the sleeve unit to contact an end portion of the shaft unit at a position on a central axis to rotatably support the shaft unit. The shaft unit has a first contact portion, and the sleeve unit has a second contact portion. The contact portions are so arranged that, when a force acting from above the inner bottom surface is applied, movement of the shaft unit is restrained by the contact portions making contact with each other. Further, a distance between the contact portions prior to the force being applied is smaller than the displacement of the shaft unit at which the thrust plate gets so pressed by the shaft unit to be permanently deformed.

摘要翻译： 轴承机构包括圆柱形底部闭合套筒单元; 通过润滑剂由套筒单元径向支撑的轴单元; 以及在所述套筒单元的内底表面上的弹性止推板，以在所述轴单元的端部在中心轴线上的位置接触以可旋转地支撑所述轴单元。 轴单元具有第一接触部分，并且套筒单元具有第二接触部分。 接触部分布置成使得当从内底表面上方施加的力被施加时，轴单元的运动被彼此接触的接触部分约束。 此外，施加力之前的接触部分之间的距离小于推动板被轴单元压迫以永久变形的轴单元的位移。

公开(公告)号：US20090022438A1

公开(公告)日：2009-01-22

申请号：US11960901

申请日：2007-12-20

申请人： Takehito TAMAOKA

发明人： Takehito TAMAOKA

IPC分类号： F16C35/02 ,  H02K5/16

CPC分类号： F16C35/02 ,  F16C17/107 ,  F16C33/107 ,  F16C2370/12 ,  G11B19/2036

摘要： A sleeve and a sleeve housing are bonded to each other with adhesive. A thrust dynamic pressure bearing portion is configured between a thrust plate attached to a distal end of a shaft and the lower end surface of the sleeve. An annular step portion having a smaller diameter is provided at the lower side of the sleeve housing, and the annular step portion meets the sleeve. An annular raised portion is provided between thrust dynamic pressure grooves on the lower end surface of the sleeve and the annular step portion. In this configuration, the surplus adhesive leaked from between the sleeve and the annular step portion can be blocked by the annular raised portion, thereby preventing the adhesive from flowing into the thrust dynamic pressure bearing portion.

摘要翻译： 套筒和套筒外壳用粘合剂彼此粘合。 推力动压轴承部构造在安装在轴的远端的推力板和套筒的下端面之间。 在套筒壳体的下侧设置有具有较小直径的环形台阶部分，并且环形台阶部分与套筒相接触。 在套筒的下端面上的推力动压槽和环状台阶部之间设有环状凸起部。 在这种构造中，从套筒与环状台阶部分之间漏出的多余的粘合剂可被环形凸起部分阻挡，从而防止粘合剂流入推力动压轴承部分。

公开(公告)号：US20080239570A1

公开(公告)日：2008-10-02

申请号：US12053810

申请日：2008-03-24

申请人： Masafumi KUMOI ,  Yukinori MARUYAMA

发明人： Masafumi KUMOI ,  Yukinori MARUYAMA

IPC分类号： G11B5/82 ,  F16C32/06 ,  H02K5/16

CPC分类号： G11B17/0282 ,  F16C17/026 ,  F16C17/045 ,  F16C17/107 ,  F16C33/107 ,  F16C2370/12 ,  G11B19/2036 ,  H02K5/1675 ,  H02K7/085

摘要： A spindle motor can suppress the generation of noise during swinging and the extend service life, and also suppress the increase in current consumption. The outside diameter Do of a thrust hydrodynamic groove 3 is at least 10% of the outside diameter Dd of a disk-shaped medium 20, and the depth of the radial hydrodynamic groove is greater than the depth of the thrust hydrodynamic groove. By adjusting to specific numbers, the angular stiffness in the thrust bearing is raised, and even if a disturbance torque should be applied, wear or noise caused by metal contact inside the bearing can be suppressed.

摘要翻译： 主轴电动机可以抑制摆动时产生的噪声和延长使用寿命，并且还抑制电流消耗的增加。 推力流体动力槽3的外径Do为盘状介质20的外径Dd的10％以上，径向流体动力槽的深度大于推力流体动力槽的深度。 通过调整到具体数字，推力轴承的角度刚度提高，即使施加扰动转矩，也可以抑制由轴承内的金属接触引起的磨损或噪音。

公开(公告)号：US20080158729A1

公开(公告)日：2008-07-03

申请号：US11954850

申请日：2007-12-12

申请人： Takehito Tamaoka

发明人： Takehito Tamaoka

IPC分类号： H02K5/16 ,  F16C32/06 ,  G11B17/32 ,  H02K15/02

CPC分类号： H02K5/1675 ,  F16C17/107 ,  F16C33/10 ,  F16C2370/12 ,  G11B19/2036 ,  H02K15/02 ,  Y10T29/49012

摘要： A shaft, a circular plate portion and a cylindrical portion are integrally formed with one another through cutting operations to provide a rotor hub of a motor. An inner region on the lower surface of the circular plate portion is formed continuously with the outer peripheral surface of the shaft, and a hub thrust portion is provided in the inner portion so as to axially face a sleeve thrust portion on a sleeve main body. A stepped portion on the lower surface of the circular plate portion is disposed on the outer side of thrust dynamic pressure grooves on the sleeve thrust portion. In this manner, the stepped portion is disposed in a region where a thrust bearing portion is not provided, so that the hub thrust portion can be formed at a low cost in manufacturing the rotor hub by cutting.

摘要翻译： 轴，圆板部分和圆柱形部分通过切割操作彼此一体地形成，以提供电动机的转子轮毂。 在圆板部分的下表面上的内部区域与轴的外周面连续地形成，并且在内侧部分设置有轮毂推力部，从而轴向地面对套筒主体上的套筒推力部。 圆板部的下表面上的阶梯部设置在套筒推力部的推力动压槽的外侧。 以这种方式，台阶部分设置在没有设置推力轴承部分的区域中，从而通过切割制造转子轮毂可以以低成本形成轮毂止推部分。

公开(公告)号：US20080101739A1

公开(公告)日：2008-05-01

申请号：US11975431

申请日：2007-10-19

申请人： Matthias Wildpreth ,  Andreas Kull ,  Martin Hafen ,  Olaf Winterhalter ,  Thilo Rehm

发明人： Matthias Wildpreth ,  Andreas Kull ,  Martin Hafen ,  Olaf Winterhalter ,  Thilo Rehm

IPC分类号： H02K5/167 ,  F16C32/06 ,  H02K9/06 ,  G11B17/08

CPC分类号： G11B19/2036 ,  F16C17/107 ,  F16C33/745 ,  F16C2370/12 ,  H02K5/1675

摘要： The invention relates to a fluid dynamic bearing system having at least one stationary (10) and at least one moving bearing part (22) that are rotatable about a common rotational axis (16) with respect to one another and form a bearing gap (14) filled with a bearing fluid between associated bearing surfaces, wherein a sealing gap (38) adjoins one end of the bearing gap, the sealing gap being disposed between a sleeve surface (40) of the stationary bearing part (10) and an opposing sleeve surface (42) of the moving bearing part (22) and comprising a radial section and an axial section and being at least partially filled with bearing fluid, wherein in the region of the axial section of the sealing gap (38), the sleeve surface (40) of the stationary bearing part (10) forms an acute angle a with the rotational axis (16) and the sleeve surface (42) of the moving bearing part (12, 22) forms an acute angle β with the rotational axis (16), wherein for the angles the condition α≧β>0° applies, and the difference B2 between the smallest radius r2 of the sleeve surface (42) of the moving bearing part (22) adjacent to the sealing gap (38) and the largest radius r1 of the sleeve surface (40) of the stationary bearing part (10) adjacent to the sealing gap (38) is less than or equal to the smallest width B1 of the axial section of the sealing gap (38), and that B1≦2 B2 further applies.

摘要翻译： 本发明涉及一种流体动力轴承系统，其具有至少一个固定件（10）和至少一个可相对于共同的旋转轴线（16）相对于彼此旋转的运动支承部件（22），并形成轴承间隙（14） ），其中密封间隙（38）与所述轴承间隙的一端相邻，所述密封间隙设置在所述固定轴承部件（10）的套筒表面（40）和相对的套筒 （22）的表面（42）并且包括径向部分和轴向部分并且至少部分地填充有轴承流体，其中在密封间隙（38）的轴向部分的区域中，套筒表面 所述固定轴承部件（10）的所述旋转轴线（40）与所述旋转轴线（16）形成锐角α，并且所述运动轴承部件（12,22）的套筒表面（42）与所述旋转轴线形成锐角β 16），其中对于 并且运动轴承部件的套筒表面（42）的最小半径r 2 2 之间的差B S 2 邻近密封间隙（38）的固定轴承部分（10）的套筒表面（40）的最大半径r 1> 1邻近密封间隙（38）的最小半径r 1是小于或等于 等于密封间隙（38）的轴向部分的最小宽度B 1> 1，并且还进一步施加B1 <= 2 B 2 。

公开(公告)号：US20080078084A1

公开(公告)日：2008-04-03

申请号：US11860577

申请日：2007-09-25

申请人： Yoichi SEKII ,  Hiroshi OGAWA

发明人： Yoichi SEKII ,  Hiroshi OGAWA

IPC分类号： B21K1/00 ,  G11B17/00 ,  H02K21/12

CPC分类号： G11B19/2036 ,  Y10T29/49639

摘要： One or more of constructional members of a hydrodynamic bearing assembly are nickel-plated, and the members to be welded and fixed are arranged to abut on one another. The nickel plating is performed so as to form a plated layer of less than 10 μm in thickness between the members to be welded and fixed. An energy beam is applied at the joining portion of the members to be welded and fixed, to weld and fix these members.

摘要翻译： 流体动力轴承组件的一个或多个结构构件是镀镍的，待焊接和固定的构件被布置成彼此邻接。 进行镀镍，以在要焊接和固定的构件之间形成厚度小于10微米的镀层。 在被焊接和固定的构件的接合部分处施加能量束，以焊接和固定这些构件。

公开(公告)号：US20080019048A1

公开(公告)日：2008-01-24

申请号：US11780025

申请日：2007-07-19

申请人： Han-Rae CHO

发明人： Han-Rae CHO

IPC分类号： G11B5/60

CPC分类号： G11B19/2036

摘要： A hard disk drive includes a base, a cover coupled to an upper portion of the base to accommodate a plurality of parts between the cover and the base, a spindle motor including a FDB (fluid dynamic bearing) having an FDB fixing portion fixed to the base and an FDB rotation portion partially inserted in an inside of the FDB fixing portion and which rotates with respect to the FDB fixing portion, a hub to support a disk, having an end portion coupled to the FDB rotation portion, and which rotates with the FDB rotation portion and a power generation portion to generate power to rotate the hub, and an anti-stick portion provided with at least one of the cover and the spindle motor and which prevents the FDB rotation portion from being restricted as the FDB rotation portion partially contacts the FDB fixing portion by an impact applied to the spindle motor when the disk rotates.

摘要翻译： 硬盘驱动器包括底座，联接到基座的上部的盖以容纳盖和基座之间的多个部分;主轴马达，其包括FDB（流体动力轴承），FDB固定部分固定到 基部和FDB旋转部分，其部分地插入到FDB固定部分的内部并且相对于FDB固定部分旋转;轮毂，用于支撑盘，其具有连接到FDB旋转部分的端部，并且与 FDB旋转部分和发电部分，以产生使轮毂旋转的动力;以及设置有盖和主轴电动机中的至少一个的防粘部分，并且防止FDB旋转部分被部分地作为FDB旋转部分被限制 当盘旋转时，通过施加到主轴电机的冲击与FDB固定部分接触。

公开(公告)号：US20070211971A1

公开(公告)日：2007-09-13

申请号：US10588418

申请日：2004-08-17

申请人： Rikuro Obara ,  Tadashi Akahori

发明人： Rikuro Obara ,  Tadashi Akahori

IPC分类号： F16C32/06

CPC分类号： F16C33/745 ,  F16C17/107 ,  F16C33/107 ,  F16C2370/12 ,  G11B19/2036 ,  H02K5/1675

摘要： A fluid dynamic bearing mechanism for a motor (1) suitable for use in a hard disk drive and having a compact and thin shape, high bearing rigidity, and high rotating accuracy, and which securely keeps the rotor member (6) in place against shocks, and allows the inspection of lubricant supply amount easily. A fluid dynamic bearing mechanism having a capillary seal part (12) on one end of lubricant supply part formed by a minute gap including dynamic pressure grooves (10) formed on a shaft member (5) or a bearing member (4) is provided. An annular member (13) is fitted on the shaft member at the location corresponding to the capillary seal part, another annular member (14) is fitted on the bearing member at the location corresponding to the capillary seal part, a taper or step (13a, 14a) is formed on the outer peripheral surface of the annular member on the shaft member side and the inner peripheral surface of the annular member on the bearing member side. These inner and outer peripheral surfaces are arranged to be close to and facing with each other so that the rotor member is prevented from disengaging from the bearing member, and the capillary seal part can be formed at the same time. An axial dynamic pressure bearing unit (1) is formed between the annular member on the shaft member side and one end of the bearing member.

摘要翻译： 一种用于电动机（1）的流体动力轴承机构，适用于硬盘驱动器，具有紧凑而薄的形状，高轴承刚性和高旋转精度，并且可靠地将转子构件（6）保持在适当的位置，防止冲击 ，并且容易地检查润滑剂供给量。 提供了一种流体动力轴承机构，其具有在由包括形成在轴构件（5）或轴承构件（4）上的动压槽（10）的微小间隙形成的润滑剂供给部的一端上的毛细管密封部（12）。 环形构件（13）在对应于毛细管密封部分的位置处装配在轴构件上，另一个环形构件（14）在对应于毛细管密封部分的位置，锥形或台阶（13）上装配在轴承构件上 a，14a）形成在轴构件侧的环状构件的外周面和轴承构件侧的环状构件的内周面上。 这些内周面和外周面被布置成彼此接近并面对，从而防止转子部件与轴承部件分离，并且毛细管密封部分可以同时形成。 在轴构件侧的环状构件和轴承构件的一端之间形成有轴向动压轴承单元（1）。