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1. 发明授权

US5776600A Slide member and method of manufacturing the same 失效
标题翻译：滑动构件及其制造方法
公开(公告)号：US5776600A
公开(公告)日：1998-07-07
申请号：US631666
申请日：1996-04-09
申请人： Tetsuya Katayama , Kaoru Murabe , Osamu Komura , Chihiro Kawai , Akira Yamakawa , Kenji Matsunuma , Norio Yasuoka , Matsuo Higuchi , Masaya Miyake
发明人： Tetsuya Katayama , Kaoru Murabe , Osamu Komura , Chihiro Kawai , Akira Yamakawa , Kenji Matsunuma , Norio Yasuoka , Matsuo Higuchi , Masaya Miyake
IPC分类号： C04B35/01 , C04B35/584 , C04B35/593 , C04B41/00 , C04B41/80 , F16C33/04 , F16C33/16 , C04B35/587
CPC分类号： C04B41/009 , C04B35/01 , C04B35/584 , C04B35/593 , C04B35/5935 , C04B41/0072 , C04B41/80 , F16C33/043 , F16C33/16 , C04B2111/00353 , Y10T428/252 , Y10T428/2991 , Y10T428/30
摘要： A slide member has a sliding surface made of ceramic and a has surface roughness of not more than 1.0 .mu.m in center line average roughness Ra. The ceramics includes a silicon nitride sintered body which contains crystal grains having a linear density of at least 35 per 30 .mu.m in length with a boundary phase volume ratio of not more than 15 volume %, and which contains pores of not more than 20 .mu.m in maximum diameter in a content of not more than 3%. In a method of manufacturing the slide member, it is possible to ensure smoothness of the sliding surface by grinding the sliding surface and thereafter heating the ceramic in an either an inert gas or atmospheric air. A slide member that can be used under severe sliding conditions of high-speed sliding or the like and that has excellent wear resistance is obtained. Even if the slide member is used for to a sliding part of a compressor or the like which employs a fluorocarbon containing no chlorine as a cooling medium, it is possible to prevent the occurrence of seizure and abnormal wear on the sliding surface.
摘要翻译：滑动构件具有由陶瓷制成的滑动面，并且在中心线平均粗糙度Ra中具有不大于1.0μm的表面粗糙度。陶瓷包括氮化硅烧结体，其包含长度为30μm以上的线密度为35以上，边界相体积比为15体积％以下且含有不大于20μm的孔的晶粒 m最大直径，含量不超过3％。在制造滑动构件的方法中，可以通过研磨滑动表面并随后在惰性气体或大气中加热陶瓷来确保滑动表面的平滑度。可以获得可以在高速滑动等的严酷滑动条件下使用且具有优异的耐磨性的滑动构件。即使将滑动部件用于使用不含氯的氟碳化合物的压缩机等的滑动部作为冷却介质，也可以防止滑动面发生卡滞和异常磨损。

2. 发明授权

US5543371A Slide member and method of manufacturing the same 失效
标题翻译：滑动构件及其制造方法
公开(公告)号：US5543371A
公开(公告)日：1996-08-06
申请号：US150189
申请日：1993-11-30
申请人： Tetsuya Katayama , Kaoru Murabe , Osamu Komura , Chihiro Kawai , Akira Yamakawa , Kenji Matsunuma , Norio Yasuoka , Matsuo Higuchi , Masaya Miyake
发明人： Tetsuya Katayama , Kaoru Murabe , Osamu Komura , Chihiro Kawai , Akira Yamakawa , Kenji Matsunuma , Norio Yasuoka , Matsuo Higuchi , Masaya Miyake
IPC分类号： C04B35/01 , C04B35/584 , C04B35/593 , C04B41/00 , C04B41/80 , F16C33/04 , F16C33/16 , C04B35/587
CPC分类号： C04B41/009 , C04B35/01 , C04B35/584 , C04B35/593 , C04B35/5935 , C04B41/0072 , C04B41/80 , F16C33/043 , F16C33/16 , C04B2111/00353 , Y10T428/252 , Y10T428/2991 , Y10T428/30
摘要： A slide member has a sliding surface made of ceramic and has a surface roughness of not more than 1.0 .mu.m in center line average roughness Ra. ceramic includes a silicon nitride sintered body, which contains crystal grains having a linear density of at least 35 per 30 .mu.m in length with a boundary phase volume ratio of not more than 15 volume %, and which contains pores of not more than 20 .mu.m in maximum diameter in a content of not more than 3%. In a method of manufacturing the slide member, it is possible to ensure smoothness of the sliding surface by grinding the sliding surface and thereafter heating the ceramic in either inert gas or an atmospheric air. A slide member that can be used under severe sliding conditions of high-speed sliding or the like and that has excellent wear resistance is obtained. Even if the slide member is used for a sliding part of a compressor or the like which employs a fluorocarbon containing no chlorine as a cooling medium, it is possible to prevent the occurrence of seizure and abnormal wear on the sliding surface.
摘要翻译： PCT No.PCT / JP93 / 00385 Sec。 371日期：1993年11月30日 102（e）日期1993年11月30日PCT 1993年3月29日PCT公布。公开号WO93 / 2002500 日期：1993年10月14日滑动部件具有由陶瓷制成的滑动面，中心线平均粗糙度Ra的表面粗糙度不大于1.0μm。陶瓷包括氮化硅烧结体，其包含长度为30μm以上的线密度为35以上，边界相体积比为15体积％以下，并且含有不大于20μm的孔的晶粒 m最大直径，含量不超过3％。在制造滑动构件的方法中，可以通过研磨滑动表面并随后在惰性气体或大气中加热陶瓷来确保滑动表面的平滑度。可以获得可以在高速滑动等的严酷滑动条件下使用且具有优异的耐磨性的滑动构件。即使将滑动部件用于使用不含氯的碳氟化合物作为冷却介质的压缩机等的滑动部件，也可以防止滑动面发生卡滞和异常磨损。

3. 发明授权

US5647313A Combination of adjusting shim and cam 失效
标题翻译：调整垫片和凸轮的组合
公开(公告)号：US5647313A
公开(公告)日：1997-07-15
申请号：US327313
申请日：1994-10-21
申请人： Hiromu Izumida , Kaoru Murabe , Takao Nishioka , Akira Yamakawa , Kenji Matsunuma
发明人： Hiromu Izumida , Kaoru Murabe , Takao Nishioka , Akira Yamakawa , Kenji Matsunuma
IPC分类号： F01L1/04 , F01L1/047 , F01L1/14 , F01L1/16 , F01L1/20 , F02F7/00 , F16H53/06
CPC分类号： F02F7/0087 , F01L1/047 , F01L1/16 , F01L1/205 , F01L2009/0411 , F05C2253/16
摘要： A combination of an adjusting shim and a cam used in a valve train in an internal combustion engine for automobiles, the adjusting shim composed of a ceramic material which sets the surface roughness of a sliding surface of the adjusting shim with respect to a cam to not more than 0.1 .mu.m in ten-point mean roughness Rz, and which contains not less than 60 vol. % of silicon nitride or sialon, and the cam composed of cast iron a surface of which is chill hardened and then provided with a phosphate film thereon. The combination of an adjusting shim and a cam is capable of smoothing a sliding surface of the cam by the break-in of the part even if the cam is not subjected to a super-precision finishing process; preventing the seizure and abnormal abrasion of sliding surfaces; stabilizing a smoothed condition of the sliding surfaces of the cam and shim for a long period of time; and providing excellent sliding characteristics of the sliding surfaces owing to a decrease in the friction coefficient thereof.
摘要翻译：用于汽车内燃机的气门机构中使用的调节垫片和凸轮的组合，由陶瓷材料组成的调节垫片，其将调节垫片的滑动表面的表面粗糙度相对于凸轮设置为不十点平均粗糙度Rz超过0.1μm，含有不低于60vol。％的氮化硅或赛隆，以及由铸铁组成的凸轮，其表面被冷却硬化，然后在其上提供磷酸盐膜。调整垫片和凸轮的组合能够通过零件的插入来平滑凸轮的滑动表面，即使凸轮不经受超精密精加工过程; 防止滑动表面的卡住和异常磨损; 稳定凸轮和垫片的滑动表面的平滑状态长时间; 并且由于其摩擦系数的降低而提供滑动表面的优异的滑动特性。

4. 发明授权

US5731831A Dynamic-pressure gas bearing structure and optical deflection scanning apparatus 失效
标题翻译：动压气体轴承结构和光学偏转扫描仪
公开(公告)号：US5731831A
公开(公告)日：1998-03-24
申请号：US614171
申请日：1996-03-08
申请人： Kaoru Murabe , Tetsuya Katayama , Osamu Komura , Mikio Nakasugi , Taku Fukita , Isshin Sato
发明人： Kaoru Murabe , Tetsuya Katayama , Osamu Komura , Mikio Nakasugi , Taku Fukita , Isshin Sato
IPC分类号： F16C17/02 , F16C33/04 , F16C33/10 , F16C33/24 , F16C39/06 , G02B26/12 , G01D15/16 , F16C32/06
CPC分类号： F16C33/1075 , F16C33/043 , F16C39/063 , G02B26/121
摘要： A dynamic-pressure gas bearing structure includes a columnar shaft made of a silicon-nitride-based ceramic sintered body, a hollow cylindrical sleeve opposed to the shaft as keeping a clearance in a radial direction, the sleeve being made of a silicon-nitride-based ceramic sintered body, and at least three flat face portions located on a peripheral surface of the shaft and at equal intervals to the circumference along the peripheral surface. The flat face portion includes a plurality of unit planes continuously formed at predetermined angles to a direction of the circumference on the peripheral surface of the shaft. The unit planes are formed so as to extend substantially in parallel with an axial direction of the shaft.
摘要翻译：动压气体轴承结构包括由氮化硅基陶瓷烧结体制成的柱状轴，与轴相对的中空圆柱形套筒，沿径向保持间隙，套筒由氮化硅 - 以及至少三个平面部分，其位于所述轴的外周表面上，并且沿着所述周边表面与所述圆周等间隔。平面部包括以与轴的圆周面上的圆周方向成预定角度连续形成的多个单位面。单元平面形成为基本上与轴的轴向平行地延伸。

5. 发明授权

US5835124A Dynamic-pressure gas bearing structure and optical deflection scanning apparatus 失效
标题翻译：动压气体轴承结构和光学偏转扫描仪
公开(公告)号：US5835124A
公开(公告)日：1998-11-10
申请号：US716093
申请日：1996-09-19
申请人： Taku Fukita , Mikio Nakasugi , Isshin Sato , Tetsuya Katayama , Osamu Komura , Kaoru Murabe
发明人： Taku Fukita , Mikio Nakasugi , Isshin Sato , Tetsuya Katayama , Osamu Komura , Kaoru Murabe
IPC分类号： B41J2/44 , F16C17/02 , F16C33/10 , F16C33/24 , F16C39/06 , G02B26/12 , G01D11/02
CPC分类号： F16C33/107 , F16C17/026 , F16C39/063 , G02B26/121
摘要： A dynamic-pressure gas bearing structure includes a sleeve, a column-like shaft fitted to the sleeve, and a plurality of shallow grooves formed on the outer peripheral surface of the shaft and extending in the axial direction of the shaft. The shallow grooves are formed by grinding in which grains are aligned to the aforementioned axial direction. An optical deflection scanning apparatus is provided with such dynamic-pressure gas bearing structure.
摘要翻译：动压气体轴承结构包括套筒，与套筒配合的柱状轴以及形成在轴的外周面上并在轴的轴向延伸的多个浅槽。通过研磨形成浅槽，其中颗粒与上述轴向对准。光学偏转扫描装置具有这种动压气体轴承结构。

6. 发明申请

US20080170815A1 Hydrodynamic bearing assembly 审中-公开
标题翻译：流体动力轴承总成
公开(公告)号：US20080170815A1
公开(公告)日：2008-07-17
申请号：US12073919
申请日：2008-03-12
申请人： Kaoru Murabe , Makoto Otsuki , Osamu Komura , Hisao Takeuchi
发明人： Kaoru Murabe , Makoto Otsuki , Osamu Komura , Hisao Takeuchi
IPC分类号： F16C32/06
CPC分类号： F16C33/1065 , F16C17/026 , F16C17/045 , F16C17/107 , F16C23/04 , F16C33/102 , F16C2370/12 , G02B26/121 , G11B19/2009 , G11B19/2018 , H02K7/085 , H02K7/086
摘要： This invention provides a hydrodynamic bearing assembly which realizes a high rotation rate in a stable manner with robust rigidity. The hydrodynamic bearing assembly has a total radial gap of 3 microns or less for preventing contact with the thrust bearing. The thrust bearing is a pump-out type, and the radial bearing has offset grooves on the surface thereof to supply fluid flow to the thrust bearing. A depth ratio of the grooves relative to the diameter of the shaft is preferably 0.005 or less to avoid reduced translational rigidity.
摘要翻译：本发明提供了一种流体动力轴承组件，其以稳定的方式实现高转速，具有坚固的刚性。流体动力轴承组件具有3微米或更小的总径向间隙，以防止与推力轴承接触。推力轴承是抽出式的，径向轴承在其表面上具有偏移槽，以向推力轴承提供流体流。凹槽相对于轴的直径的深度比优选为0.005或更小，以避免降低的平移刚性。

7. 发明授权

US06870289B1 Dynamic-pressure bearing and spindle motor comprising the same 失效
标题翻译：动压轴承和主轴电动机组成
公开(公告)号：US06870289B1
公开(公告)日：2005-03-22
申请号：US09720671
申请日：2000-04-28
申请人： Makoto Otsuki , Osamu Komura , Kaoru Murabe
发明人： Makoto Otsuki , Osamu Komura , Kaoru Murabe
IPC分类号： F16C17/10 , F16C33/10 , H02K7/08 , H02K5/12
CPC分类号： F16C33/107 , F16C17/026 , F16C17/107 , F16C2370/12 , H02K7/085 , H02K7/086
摘要： A bearing having a high thrust rigidity, an excellent vibration resistance, and a simple structure, as well as a spindle motor using such a bearing are provided. A groove or grooves 7 are disposed to either one of a shaft 2 and a sleeve 3 which form a radial bearing portion, to thereby exert thrust force in a direction which brings two mutually facing members at a thrust bearing portion closer to each other. The groove 7 is inclined with respect to an axis, and the inclination exerts, between the shaft 2 and the sleeve 3, thrust force in a thrust direction. The groove 7 may be herringbone-shaped or other type of groove which can generates such thrust force. It is also possible to further enhance the thrust force utilizing a negative pressure, with an upstream side of the radial bearing portion for introducing fluid such as air shielded from outside air.
摘要翻译：提供具有高推力刚性，优异的抗振性和简单结构的轴承以及使用这种轴承的主轴电动机。凹槽或凹槽7设置在形成径向支承部分的轴2和套筒3中的任一个上，从而在使两个彼此相对的构件在推力轴承部分彼此更靠近的方向上施加推力。槽7相对于轴线倾斜，并且倾斜在轴2和套筒3之间施加推力方向的推力。凹槽7可以是能够产生这种推力的人字形或其他类型的凹槽。也可以利用负压进一步提高推力，径向轴承部分的上游侧用于引入诸如外部空气屏蔽的空气的流体。

8. 发明授权

US06702464B1 Dynamic pressure bearing with improved starting characteristics 失效
公开(公告)号：US06702464B1
公开(公告)日：2004-03-09
申请号：US09856093
申请日：2001-08-16
申请人： Hisao Takeuchi , Osamu Komura , Kaoru Murabe , Makoto Otsuki
发明人： Hisao Takeuchi , Osamu Komura , Kaoru Murabe , Makoto Otsuki
IPC分类号： F16C1710
CPC分类号： F16C33/107 , F16C17/045 , F16C2370/12 , G02B26/121 , G11B19/2009 , H02K7/086
摘要： A hydrodynamic bearing assembly with improved activation features is provided. The opposing surfaces in the radial and thrust bearings have grooves 2 and 5 with depths shallower gradually towards the downstream flow of the fluid passing therethrough, for generating the uniform dynamic pressure distribution. This allows the dynamic pressure distribution to be leveled so as to increase the bearing supporting force and prevent the dew grom being generated. Any one or both of the opposing surfaces in the thrust bearing has the inclined surface from the inner portion towards the outer portion so that the gap between the opposing surfaces is extended to about 2 microns. This causes the contacting points thereof when halted to be closer to the axis so that the friction can be reduced and the driving torque can be reduced when restating the bearing assembly. This also prevent the contact in the thrust bearing due to the external oscillating motion. Further, a second thrust plate 11 is secured on the other end surface of the sleeve 3 opposite to the thrust plate 4 so that the total weight of the rotational member is supported between the second thrust plate 11 and the end surface of the shaft 1 when halted, thereby reducing the friction at the time of activating.

9. 发明授权

US5628567A Dynamic pressure gas bearing structure 失效
标题翻译：动压气体轴承结构
公开(公告)号：US5628567A
公开(公告)日：1997-05-13
申请号：US613282
申请日：1996-03-11
申请人： Kaoru Murabe , Osamu Komura
发明人： Kaoru Murabe , Osamu Komura
IPC分类号： F16C17/02 , F16C33/10 , G11B5/52 , F16C32/06
CPC分类号： F16C33/1075 , F16C17/028
摘要： Provided is a dynamic pressure gas bearing structure which is applicable to a high-speed rotation driving part such as a hard disk driver or the like and has high rotational accuracy in high-speed rotation. The dynamic pressure gas bearing structure comprises a shaft body and a bearing body. When the shaft body and the bearing body are so arranged that central axes thereof are aligned with each other, a substantially cylindrical gap is defined between the outer peripheral surface of the shaft body and the inner peripheral surface of the bearing body. The gap has at least one gap change portion whose thickness is changed with respect to a central angle corresponding to the circumference along the outer peripheral surface of the shaft body. The gap change rate .alpha. is at least 1.0.times.10.sup.-4 /.degree. and less than 10.0.times.10.sup.-4 /.degree. .
摘要翻译：提供一种适用于诸如硬盘驱动器等的高速旋转驱动部件并且在高速旋转中具有高旋转精度的动压气体轴承结构。动压气体轴承结构包括轴体和轴承体。当轴体和轴承体的中心轴线彼此对准时，在轴体的外周面和轴承体的内周面之间形成大致圆筒状的间隙。间隙具有至少一个间隙变化部分，其厚度相对于沿着轴体的外周表面的圆周对应的中心角度改变。间隙变化率α至少为1.0×10 -4 /℃且小于10.0×10 -4 /℃。

10. 发明授权

US06686673B1 Bearing structures, spindle motor, and hard disk drive 失效
标题翻译：轴承结构，主轴电机和硬盘驱动器
公开(公告)号：US06686673B1
公开(公告)日：2004-02-03
申请号：US09744160
申请日：2001-03-15
申请人： Osamu Komura , Makoto Otsuki , Kaoru Murabe
发明人： Osamu Komura , Makoto Otsuki , Kaoru Murabe
IPC分类号： H02K516
CPC分类号： H02K7/09 , F16C17/10 , F16C41/002 , F16C2202/32 , F16C2370/12 , G11B19/20 , G11B19/2009 , G11B25/043 , G11B33/14 , G11B33/1493 , H02K7/085 , H02K7/086 , H02K11/40
摘要： A hydrodynamic gas bearing structure and a hard disk drive (HDD) including a hydrodynamic gas bearing structure are provided in which electrostatic charge built up in the rotatable components is safely discharged to the fixed components. A conductive structure is installed between the rotatable and fixed components at or in the vicinity of the axis of rotation of the rotatable components. The conductive structure provides a safe discharge path for electrostatic charge dissipation. The conductive structure located at or in the vicinity of the axis of the rotation is barely influenced by the relative rotation between the rotatable and fixed components as well as air flow for generating hydrodynamic pressure. The conductive structure can be a magnetic fluid or a conductive, flexible strip. In a HDD a dummy disk and a dummy head are provided to dissipate electrostatic charge.
摘要翻译：提供了一种流体动力气体轴承结构和包括流体动力气体轴承结构的硬盘驱动器（HDD），其中构成在可旋转部件中的静电电荷被安全地排放到固定部件。导电结构安装在可旋转部件的旋转轴线附近或附近的可旋转部件和固定部件之间。导电结构为静电荷耗散提供了安全的放电路径。位于旋转轴线处或附近的导电结构几乎不受旋转和固定部件之间的相对旋转以及用于产生流体动力压力的气流的影响。导电结构可以是磁性流体或导电的柔性条带。在HDD中，设置虚拟磁盘和虚拟磁头以消散静电电荷。

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