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1. 发明申请

US20060255675A1 Hydrodynamic bearing device and spindle motor having the bearing device, and recording and/or reproducing apparatus using the spindle motor 失效
公开(公告)号：US20060255675A1
公开(公告)日：2006-11-16
申请号：US11407060
申请日：2006-04-20
申请人： Hiroaki Saito , Takeyoshi Yamamoto , Takao Yoshitsugu
发明人： Hiroaki Saito , Takeyoshi Yamamoto , Takao Yoshitsugu
IPC分类号： H02K5/16 , H02K7/08
CPC分类号： F16C33/107 , F16C17/107 , H02K5/1675 , H02K7/085
摘要： A set of radial dynamic pressure generating grooves constitute a radial bearing, and an entire width (L) of the radial dynamic pressure generating groove is reduced. A set of thrust dynamic pressure generating grooves constituting a thrust bearing are formed so that an area where a maximal thrust dynamic pressure is generated (diameter) is increased, and a bearing angle stiffness of the thrust bearing is increased. The thrust bearing having the high bearing angle stiffness shares a moment load applied to a shaft to thereby compensate for a bearing angle stiffness of the radial bearing whose bearing stiffness is small because an entire width of the radial bearing is small. Thus, a thin-shaped hydrodynamic bearing capable of withstanding a large moment load is obtained.

2. 发明授权

US07622837B2 Hydrodynamic bearing device and spindle motor having the bearing device, and recording and/or reproducing apparatus using the spindle motor 失效
标题翻译：具有轴承装置的流体动力轴承装置和主轴电机，以及使用主轴电机的记录和/或再现装置
公开(公告)号：US07622837B2
公开(公告)日：2009-11-24
申请号：US11407060
申请日：2006-04-20
申请人： Hiroaki Saito , Takeyoshi Yamamoto , Takao Yoshitsugu
发明人： Hiroaki Saito , Takeyoshi Yamamoto , Takao Yoshitsugu
IPC分类号： H02K5/16
CPC分类号： F16C33/107 , F16C17/107 , H02K5/1675 , H02K7/085
摘要： A set of radial dynamic pressure generating grooves constitute a radial bearing, and an entire width (L) of the radial dynamic pressure generating groove is reduced. A set of thrust dynamic pressure generating grooves constituting a thrust bearing are formed so that an area where a maximal thrust dynamic pressure is generated (diameter) is increased, and a bearing angle stiffness of the thrust bearing is increased. The thrust bearing having the high bearing angle stiffness shares a moment load applied to a shaft to thereby compensate for a bearing angle stiffness of the radial bearing whose bearing stiffness is small because an entire width of the radial bearing is small. Thus, a thin-shaped hydrodynamic bearing capable of withstanding a large moment load is obtained.
摘要翻译：一组径向动压产生槽构成径向轴承，并且径向动压产生槽的整个宽度（L）减小。形成构成推力轴承的一组推力动压生成槽，使得产生最大推力动压（直径）的区域增加，并且推力轴承的轴承角刚度增加。具有高轴承角刚度的推力轴承共享施加到轴的力矩载荷，从而补偿径向轴承的轴承刚度，其轴承刚度较小，因为径向轴承的整个宽度较小。因此，获得能够承受大的力矩载荷的薄型流体动力轴承。

3. 发明申请

US20060002011A1 Hard disk drive device, and fluid dynamic bearing spindle motor and assembling method thereof 失效
标题翻译：硬盘驱动装置和流体动力轴承主轴电动机及其组装方法
公开(公告)号：US20060002011A1
公开(公告)日：2006-01-05
申请号：US11167126
申请日：2005-06-28
申请人： Takeyoshi Yamamoto , Yasunori Tokuno , Hiroaki Saito
发明人： Takeyoshi Yamamoto , Yasunori Tokuno , Hiroaki Saito
IPC分类号： G11B17/02 , G11B33/14 , F16C32/06
CPC分类号： G11B33/121 , F16C17/107 , F16C33/1015 , F16C2370/12 , G11B19/2018 , G11B25/043
摘要： A hard disk drive device is provided, which is designed small, thin, and at low-cost. The hard disk drive device includes a case with an upright shaft, and a cylindrical hub coupled to the shaft. One end of the hub is closed by a thrust plate so that the hub has a bottomed cylindrical shape, and a hard disk is fixedly mounted on an outer peripheral part of the hub. An oil is filled in a clearance between an inner surface of the hub and an outer surface of the shaft, whereby a hydrodynamic radial bearing is formed between the inner periphery of the hub and the outer periphery of the shaft, and a hydrodynamic thrust bearing is formed between the top face of the shaft and the thrust plate. Between an outer peripheral part at the base end of the shaft and an inner peripheral part at the open end of the hub is formed a seal part in which a larger clearance is formed between the shaft and the hub than a clearance in the hydrodynamic radial bearing and in which the oil surface is positioned. An oil surface adjusting hole and a plug for sealing the hole are provided in the case opposite the seal part. A motor for rotating the hub is disposed between the outer peripheral part at the open end of the hub and the case.
摘要翻译：提供了一种硬盘驱动器件，其设计小巧，薄型，低成本。硬盘驱动装置包括具有直立轴的壳体和联接到轴的圆柱形毂。轮毂的一端由止推板封闭，使得轮毂具有有底圆筒形状，并且硬盘固定地安装在轮毂的外周部分上。油被填充在毂的内表面和轴的外表面之间的间隙中，由此在轮毂的内周和轴的外周之间形成流体动力学径向轴承，并且流体动力推力轴承是形成在轴的顶面和止推板之间。在轴的基端部的外周部和轮毂的开口端的内周部之间形成有密封部，在该密封部中，在轴和轮毂之间形成比在流体动力学径向轴承中的间隙更大的间隙并且其中油表面被定位。在与密封部相对的壳体中设置油面调整孔和密封孔的塞子。用于旋转毂的电动机设置在轮毂的开口端的外周部与壳体之间。

4. 发明授权

US07365940B2 Hard disk drive device, and fluid dynamic bearing spindle motor and assembling method thereof 失效
标题翻译：硬盘驱动装置和流体动力轴承主轴电动机及其组装方法
公开(公告)号：US07365940B2
公开(公告)日：2008-04-29
申请号：US11167126
申请日：2005-06-28
申请人： Takeyoshi Yamamoto , Yasunori Tokuno , Hiroaki Saito
发明人： Takeyoshi Yamamoto , Yasunori Tokuno , Hiroaki Saito
IPC分类号： G11B17/02 , F16C32/06 , H02K5/16 , H02K7/08
CPC分类号： G11B33/121 , F16C17/107 , F16C33/1015 , F16C2370/12 , G11B19/2018 , G11B25/043
摘要： A hydrodynamic bearing for a hard disk drive device is disclosed. An oil is filled in a clearance between an inner surface of the hub and an outer surface of the shaft, whereby a hydrodynamic radial bearing is formed between the inner periphery of the hub and the outer periphery of the shaft, and a hydrodynamic thrust bearing is formed between the top face of the shaft and the thrust plate. Between an outer peripheral part at the base end of the shaft and an inner peripheral part at the open end of the hub is formed a seal part in which a larger clearance is formed between the shaft and the hub than a clearance in the hydrodynamic radial bearing and in which the oil surface is positioned. An oil surface adjusting hole and a plug for sealing the hole are provided in the case opposite the seal part.
摘要翻译：公开了一种用于硬盘驱动装置的流体动力轴承。油被填充在毂的内表面和轴的外表面之间的间隙中，由此在轮毂的内周和轴的外周之间形成流体动力学径向轴承，并且流体动力推力轴承是形成在轴的顶面和止推板之间。在轴的基端部的外周部和轮毂的开口端的内周部之间形成有密封部，在该密封部中，在轴和轮毂之间形成比在流体动力学径向轴承中的间隙更大的间隙并且其中油表面被定位。在与密封部相对的壳体中设置油面调整孔和密封孔的塞子。

5. 发明授权

US08172584B2 Electrical connection mechanism for connecting an electrical part to a junction box 有权
标题翻译：用于将电气部件连接到接线盒的电气连接机构
公开(公告)号：US08172584B2
公开(公告)日：2012-05-08
申请号：US13041862
申请日：2011-03-07
申请人： Takeyoshi Yamamoto , Yasuhiro Nakada
发明人： Takeyoshi Yamamoto , Yasuhiro Nakada
IPC分类号： H01R12/00
CPC分类号： H01R31/06 , H01H23/14 , H01R13/5219 , H01R2107/00
摘要： Provided is a connection mechanism which connects a switch portion 20 of a generator 1 to an assembling terminal 11 of a junction box 10 having plural female terminals 12 connected to a generator circuit 13 via a relay connector 30, wherein the relay connector 30 forms a defining wall 31 inside a cylindrical body so that a fitting portion 32 is provided at one side of the defining wall 31 so as to be fitted to the switch portion 20, and plural relay terminals are attached to the other side so as to be connected to the plural female terminals 12, and wherein holes 35 are provided in the defining wall so as to respectively face the front ends of the relay terminals 33. Accordingly, the switch portion 20 and the assembling terminal 11 are integrally and directly connected to each other via the relay connector 30.
摘要翻译：提供了一种将发电机1的开关部分20连接到具有通过中继连接器30连接到发电机电路13的多个母端子12的接线盒10的组装端子11的连接机构，其中中继连接器30形成定义壁31在圆筒体内，使得嵌合部分32设置在限定壁31的一侧以与开关部分20相配合，并且多个继电器端子附接到另一侧以便连接到多个母端子12，并且其中孔35设置在限定壁中，以分别面对中继端子33的前端。因此，开关部分20和组装端子11通过中继连接器30。

6. 发明申请

US20070085432A1 Spindle motor and rotation device 失效
标题翻译：主轴电机和旋转装置
公开(公告)号：US20070085432A1
公开(公告)日：2007-04-19
申请号：US11477546
申请日：2006-06-30
申请人： Takeyoshi Yamamoto
发明人： Takeyoshi Yamamoto
IPC分类号： H02K7/00 , H02K5/16
CPC分类号： H02K5/1675 , F16C17/107 , F16C33/107 , F16C2370/12
摘要： A spindle motor includes a shaft including a core spindle member with a large and a small diameter portions and an encircling annulus member attached to the small diameter portion; a rotor hub attached to the large diameter portion; a bearing member; a radial bearing portion provided with first dynamic pressure creating grooves and formed between the outer peripheral surface of the encircling annulus member and the inner peripheral surface of the bearing member; a thrust bearing portion provided with second dynamic pressure creating grooves and formed between a lower end of the encircling annulus member and the bottom of the bearing member; a first opening formed at a radially inner side of the thrust bearing portion; a second opening formed at a radially outer side of the large diameter portion; and a communication hole continuously formed from the first opening to the second opening.
摘要翻译：主轴电动机包括：轴，其包括具有大直径部分的芯心构件和附接到小直径部分的环绕环形构件; 附接到大直径部分的转子毂; 轴承构件; 径向轴承部分，设置有第一动压产生槽，并形成在环绕环形部件的外周面与轴承部件的内周面之间; 推力轴承部分设置有第二动压产生槽并形成在环绕的环形部件的下端和轴承部件的底部之间; 形成在推力轴承部分的径向内侧的第一开口; 第二开口，形成在所述大直径部分的径向外侧; 以及从第一开口到第二开口连续地形成的连通孔。

7. 发明申请

US20050232522A1 Fluid bearing device and spindle motor 失效
标题翻译：流体轴承装置和主轴电机
公开(公告)号：US20050232522A1
公开(公告)日：2005-10-20
申请号：US11106572
申请日：2005-04-15
申请人： Takeyoshi Yamamoto
发明人： Takeyoshi Yamamoto
IPC分类号： F16C17/10 , F16C32/06 , F16C33/10 , F16C33/74
CPC分类号： F16C33/107 , F16C17/026 , F16C17/107 , F16C33/103
摘要： A fluid bearing device capable of responding to miniaturization while preventing an operating fluid such as a lubricating oil from leaking out to the outside. The fluid bearing device includes a shaft and a sleeve arranged on an outer periphery with respect to the shaft with a microscopic gap in between, and has an operating fluid filled in between the shaft and the sleeve. The shaft is formed by a sintered body, a radial dynamic pressure generating groove is formed on an outer peripheral surface of the shaft, and the sleeve is formed by a material not allowing the operating fluid to pass through. The shaft is thus covered by the sleeve formed by a material that does not penetrate the operating fluid such as lubricating oil from the outer periphery side, so that the operating fluid does not leak out to the outside even when the shaft is a porous body made of a sintered body.
摘要翻译：一种流体轴承装置，其能够在防止诸如润滑油的工作流体泄漏到外部的同时响应小型化。所述流体轴承装置包括轴和套筒，所述轴和套筒布置在相对于所述轴的外周上，其间具有微小间隙，并且具有填充在所述轴和所述套筒之间的工作流体。轴由烧结体形成，在轴的外周面上形成径向动压产生槽，套筒由不允许工作流体通过的材料形成。因此，轴被由不会从外周侧渗入润滑油的工作流体的材料形成的套筒覆盖，使得即使当轴是多孔体时，工作流体也不会泄漏到外部的烧结体。

8. 发明授权

US07531928B2 Spindle motor and rotation device having dynamic pressure bearing 失效
标题翻译：主轴电动机和旋转装置具有动态压力轴承
公开(公告)号：US07531928B2
公开(公告)日：2009-05-12
申请号：US11477546
申请日：2006-06-30
申请人： Takeyoshi Yamamoto
发明人： Takeyoshi Yamamoto
IPC分类号： H02K5/16 , H02K7/08 , F16C17/10 , G11B17/02
CPC分类号： H02K5/1675 , F16C17/107 , F16C33/107 , F16C2370/12
摘要： A spindle motor includes a shaft including a core spindle member with a large and a small diameter portions and an encircling annulus member attached to the small diameter portion; a rotor hub attached to the large diameter portion; a bearing member; a radial bearing portion provided with first dynamic pressure creating grooves and formed between the outer peripheral surface of the encircling annulus member and the inner peripheral surface of the bearing member; a thrust bearing portion provided with second dynamic pressure creating grooves and formed between a lower end of the encircling annulus member and the bottom of the bearing member; a first opening formed at a radially inner side of the thrust bearing portion; a second opening formed at a radially outer side of the large diameter portion; and a communication hole continuously formed from the first opening to the second opening.
摘要翻译：主轴电动机包括：轴，其包括具有大直径部分的芯心构件和附接到小直径部分的环绕环形构件; 附接到大直径部分的转子毂; 轴承构件; 径向轴承部分，设置有第一动压产生槽，并形成在环绕环形部件的外周面与轴承部件的内周面之间; 推力轴承部分设置有第二动压产生槽并形成在环绕的环形部件的下端和轴承部件的底部之间; 形成在推力轴承部分的径向内侧的第一开口; 第二开口，形成在所述大直径部分的径向外侧; 以及从第一开口到第二开口连续地形成的连通孔。

9. 发明申请

US20070019894A1 Hydrodynamic bearing device 审中-公开
标题翻译：流体动力轴承装置
公开(公告)号：US20070019894A1
公开(公告)日：2007-01-25
申请号：US11488655
申请日：2006-07-19
申请人： Takeyoshi Yamamoto
发明人： Takeyoshi Yamamoto
IPC分类号： F16C32/06
CPC分类号： F16C33/103 , F16C17/107 , F16C33/107 , F16C33/74 , H02K7/085
摘要： A hydrodynamic bearing device includes a rotary part including a shaft and a rotor hub; a stationary part including a bearing member, which has an inner peripheral surface radially confronting with an outer peripheral surface of the shaft, a bearing bore, and an upper surface axially confronting with a bottom surface of the rotor hub; a radial bearing portion formed between the outer peripheral surface of the shaft and the inner peripheral surface of the bearing member; a thrust bearing portion formed between the bottom surface of the rotor hub and the upper surface of the bearing member; and a communication hole having a first end opened radially outwardly at the thrust bearing portion and a second end opened toward a closed side of the first gap, the communication hole being formed at the bearing member.
摘要翻译：流体动力轴承装置包括：旋转部件，包括轴和转子毂; 包括轴承构件的固定部件，其具有径向地与所述轴的外周面对置的内周面，轴承孔和与所述转子毂的底面轴向相对的上表面; 形成在所述轴的外周面与所述轴承部件的内周面之间的径向轴承部; 形成在转子毂的底面与轴承部件的上表面之间的止推轴承部; 以及连通孔，其具有在所述止推轴承部分处径向向外开口的第一端和朝向所述第一间隙的封闭侧开口的第二端，所述连通孔形成在所述轴承部件处。

10. 发明申请

US20060056750A1 Hydrodynamic bearing device and motor 有权
标题翻译：流体动力轴承装置和电机
公开(公告)号：US20060056750A1
公开(公告)日：2006-03-16
申请号：US11217318
申请日：2005-09-02
申请人： Takeyoshi Yamamoto , Yoshihiro Ashizaki
发明人： Takeyoshi Yamamoto , Yoshihiro Ashizaki
IPC分类号： F16C32/06
CPC分类号： C22C38/58 , C22C38/02 , C22C38/60 , C23C18/32 , F16C3/02 , F16C17/107 , F16C33/121 , Y10S384/913
摘要： An object of the present invention to provide a hydrodynamic bearing device and a motor having a high performance and reliability which prevents deterioration in a temperature property due to a difference in coefficients of linear expansion of a sleeve and a shaft and prevents abrasion of bearing surfaces of both the sleeve and the shaft. The sleeve is formed of a copper metal material or an iron metal material and is treated with electroless nickel plating at least on the surface which opposes the shaft. The shaft includes 0.2% by weight C, 0.3% by weight Si, 8% by weight Mn, 0.2% by weight S, 2.5% by weight Ni, and 14% by weight Cr, and a main component of the shaft is a manganese alloy steel including Fe.
摘要翻译：本发明的目的是提供一种具有高性能和可靠性的流体动力轴承装置和电动机，其防止由于套筒和轴的线性膨胀系数的差异导致的温度特性的劣化，并且防止轴承表面的磨损套筒和轴。套筒由铜金属材料或铁金属材料形成，并且至少在与轴相对的表面上用无电镀镍处理。该轴包括0.2重量％的C，0.3重量％的Si，8重量％的Mn，0.2重量％的S，2.5重量％的Ni和14重量％的Cr，并且轴的主要成分是锰合金钢包括Fe。

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