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1. 发明申请

WO2006024909B1 FLUID DYNAMIC PRESSURE BEARING, SPINDLE MOTOR WITH THE FLUID DYNAMIC PRESSURE BEARING, AND RECORDING DISK DRIVE DEVICE WITH THE SPINDLE MOTOR 审中-公开
标题翻译：流体动力压力轴承，带有流体动压轴承的主轴电机，以及带有主轴电机的记录磁盘驱动装置
公开(公告)号：WO2006024909B1
公开(公告)日：2006-05-18
申请号：PCT/IB2005002419
申请日：2005-08-12
申请人： MINEBEA CO LTD , AKAHORI TADASHI
发明人： AKAHORI TADASHI
IPC分类号： H02K5/16 , F16C17/10 , F16C33/10 , G11B19/20
CPC分类号： G11B19/2018 , F16C17/107 , F16C33/107 , F16C2370/12 , H02K5/1675
摘要： A fluid dynamic pressure bearing includes dynamic pressure grooves formed between a shaft member and a bearing member. The shaft member includes a flange portion 1-2, and a capillary seal portion 8 is formed between an outer circumferential surface of the flange portion and an inner circumferential surface of the bearing member. An annular labyrinth member 4 is engaged with an upper portion of the bearing, and a labyrinth seal portion is defined by (i) an annular protrusion 1-4 formed on an upper end surface of the flange portion and facing the labyrinth member via a micro gap and/or (ii) an annular protrusion 4-2 formed on a lower end surface of the labyrinth member and facing the flange portion via a micro gap.
摘要翻译：流体动压轴承包括形成在轴构件和轴承构件之间的动压槽。轴构件具有凸缘部1-2，在凸缘部的外周面与轴承构件的内周面之间形成毛细管密封部8。环形迷宫构件4与轴承的上部接合，并且迷宫式密封部由（i）形成在凸缘部的上端表面上并且经由微型件面对迷宫构件的环形突起1-4限定和/或（ii）形成在迷宫式构件的下端表面上并且经由微小间隙面向法兰部分的环形突起4-2。

2. 发明申请

WO2006024909A1 FLUID DYNAMIC PRESSURE BEARING, SPINDLE MOTOR WITH THE FLUID DYNAMIC PRESSURE BEARING, AND RECORDING DISK DRIVE DEVICE WITH THE SPINDLE MOTOR 审中-公开
标题翻译：流体动力压力轴承，具有流体动力压力轴承的主轴电机和带主轴电动机的记录盘驱动装置
公开(公告)号：WO2006024909A1
公开(公告)日：2006-03-09
申请号：PCT/IB2005/002419
申请日：2005-08-12
申请人： MINEBEA CO., LTD. , AKAHORI, Tadashi
发明人： AKAHORI, Tadashi
IPC分类号： H02K5/16 , G11B19/20 , F16C33/10 , F16C17/10
CPC分类号： G11B19/2018 , F16C17/107 , F16C33/107 , F16C2370/12 , H02K5/1675
摘要： A fluid dynamic pressure bearing includes dynamic pressure grooves formed between a shaft member and a bearing member. The shaft member includes a flange portion 1-2, and a capillary seal portion 8 is formed between an outer circumferential surface of the flange portion and an inner circumferential surface of the bearing member. An annular labyrinth member 4 is engaged with an upper portion of the bearing, and a labyrinth seal portion is defined by (i) an annular protrusion 1-4 formed on an upper end surface of the flange portion and facing the labyrinth member via a micro gap and/or (ii) an annular protrusion 4-2 formed on a lower end surface of the labyrinth member and facing the flange portion via a micro gap.
摘要翻译：流体动压轴承包括在轴构件和轴承构件之间形成的动压槽。轴构件包括凸缘部分1-2，并且在凸缘部分的外圆周表面和轴承部件的内圆周表面之间形成毛细管密封部分8。环形迷宫部件4与轴承的上部接合，并且迷宫式密封部分由（i）形成在凸缘部分的上端表面上并通过微型面向迷宫部件的环形突起1-4限定间隙和/或（ii）形成在迷宫构件的下端表面上并经由微隙面对凸缘部分的环形突起4-2。

3. 发明申请

WO2006013417A1 FLUID DYNAMIC PRESSURE BEARING, SPINDLE MOTOR PROVIDED WITH THE FLUID DYNAMIC PRESSURE BEARING, AND RECORDING DISK DRIVE DEVICE PROVIDED WITH THE FLUID DYNAMIC PRESSURE BEARING 审中-公开
标题翻译：流体动力压力轴承，提供流体动力压力轴承的主轴电机以及流体动力压力轴承提供的记录盘驱动装置
公开(公告)号：WO2006013417A1
公开(公告)日：2006-02-09
申请号：PCT/IB2005/002071
申请日：2005-07-19
申请人： MINEBEA CO., LTD. , OBARA, Rikuro , AKAHORI, Tadashi
发明人： OBARA, Rikuro , AKAHORI, Tadashi
IPC分类号： H02K5/16
CPC分类号： G11B19/2018 , F16C17/107 , F16C33/107 , F16C33/1085 , F16C33/745 , F16C2370/12 , H02K5/1677
摘要： A fluid dynamic pressure bearing is constituted in which a shaft member, including thrust plates 5 engaged with small-diameter portions at both ends of a shaft 1, is relatively rotatably combined with a bearing member via radial and axial dynamic pressure bearings. The bearing member includes a casing 3, a sleeve assembly body engaged to the casing 3, and seal rings 6 engaged to end portions of the casing 3. The sleeve assembly body is constituted by two or more sleeve elements 2 and a spacer sleeve element 4 coaxial with and sandwiched between the sleeve elements 2. Capillary seal portions 9 are formed between the thrust plates 5 and the seal rings 6. Highly accurate finishing of the dynamic pressure bearing portions, capillary seal portions, etc. can easily be accomplished by an easy, highly accurate processing, even if the shaft member or bearing member of a spindle motor becomes longer as a memory capacity of a memory device is increased.
摘要翻译：构成流体动压轴承，其中包括与轴1两端的小直径部分接合的止推板5的轴构件通过径向和轴向动压轴承与轴承构件相对旋转地组合。轴承构件包括壳体3，与壳体3接合的套筒组件体以及与壳体3的端部接合的密封环6.套筒组件主体由两个或多个套筒元件2和间隔套筒元件4 与套筒元件2同轴并夹在中间。毛刺密封部分9形成在推力板5和密封环6之间。动态压力承受部分，毛细管密封部分等的高精度精加工可以容易地通过简单的即使主轴电动机的轴部件或轴承部件随着存储装置的存储容量的增加而变长，也能进行高精度的处理。

4. 发明申请

WO2006059205A1 FLUID DYNAMIC PRESSURE BEARING DEVICE, SPINDLE MOTOR PROVIDED WITH THE FLUID DYNAMIC PRESSURE BEARING DEVICE, AND RECORDING DISK DRIVE DEVICE 审中-公开
标题翻译：流体动力压力轴承装置，用流体动力压力轴承装置提供的主轴电动机和记录盘驱动装置
公开(公告)号：WO2006059205A1
公开(公告)日：2006-06-08
申请号：PCT/IB2005/003594
申请日：2005-11-29
申请人： MINEBEA CO., LTD. , OBARA, Rikuro , AKAHORI, Tadashi
发明人： OBARA, Rikuro , AKAHORI, Tadashi
IPC分类号： F16C33/10 , F16C17/10 , F16C33/74
CPC分类号： F16C17/107 , F16C33/107 , F16C33/74 , F16C2370/12 , G11B19/2036
摘要： A fluid dynamic pressure bearing device includes a shaft member (5) and a bearing member (41), at least one of the shaft member or the bearing member being rotatable with respect to the other. A shaft member-side annular member (13) is fixed with respect to the shaft member. The shaft member-side annular member includes a large-diameter rim portion and a small-diameter outer circumferential surface portion. A bearing member-side annular member (14) is fixed with respect to the bearing member. The bearing member-side annular member includes an inner circumferential large-diameter step portion, and a small-diameter inner circumferential surface portion. A plurality of convex surface portions are formed either on a surface of the inner circumferential large-diameter step portion facing the large-diameter rim portion of the shaft member-side annular member, or on a surface of the large-diameter rim portion of the shaft member-side annular member facing a surface of the inner circumferential large-diameter step portion. A reflux groove (17) surrounds the convex surface portions.
摘要翻译：流体动压轴承装置包括轴构件（5）和轴承构件（41），所述轴构件或所述轴承构件中的至少一个可相对于另一个旋转。轴构件侧环形构件（13）相对于轴构件固定。轴构件侧环状构件包括大直径边缘部和小直径外周面部。轴承构件侧环形构件（14）相对于轴承构件固定。轴承构件侧环形构件包括内周大直径台阶部和小直径内周面部。在内周大直径台阶部的与轴构件侧环状构件的大直径边缘部分相对的表面上，或者形成在大直径边缘部分的大直径边缘部分的表面上，形成多个凸面部分轴构件侧环形构件面向内周大直径台阶部的表面。回流槽（17）围绕凸面部分。

5. 发明申请

WO2005083280A1 FLUID DYNAMIC BEARING MECHANISM FOR A MOTOR 审中-公开
标题翻译：流体动力轴承机构
公开(公告)号：WO2005083280A1
公开(公告)日：2005-09-09
申请号：PCT/US2004/026748
申请日：2004-08-17
申请人： NMB (USA), INC. , MINEBEA CO., LTD. , AKAHORI, Tadashi , OBARA, Rikuro
发明人： AKAHORI, Tadashi , OBARA, Rikuro
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处装配在轴承构件上，锥形或台阶（13a ，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靠近并面对，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）。

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