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1. 发明申请

US20050201645A1 Hydrodynamic bearing device 失效
标题翻译：流体动力轴承装置
公开(公告)号：US20050201645A1
公开(公告)日：2005-09-15
申请号：US11071212
申请日：2005-03-04
申请人： Takafumi Asada , Tsutomu Hamada , Hideaki Ohno , Yasunori Tokunou
发明人： Takafumi Asada , Tsutomu Hamada , Hideaki Ohno , Yasunori Tokunou
IPC分类号： F16C17/10 , B25G3/02 , F16C33/12 , F16C33/20 , G11B19/20 , H02K5/167 , H02K7/08
CPC分类号： F16C17/107 , F16C33/1025 , F16C2370/12 , Y10S384/902
摘要： A hydrodynamic bearing device capable of inhibiting leakage of a working fluid to an outside of a bearing and preventing reduction in radial bearing rigidity, and capable of keeping a gap between a thrust bearing and a radial bearing favorable and rotating stably. The hydrodynamic bearing device includes a shaft relatively rotatably inserted into a bearing hole of a sleeve, a radial bearing surface having dynamic pressure generating grooves formed on at least one of an outer peripheral surface of the shaft and an inner peripheral surface of the sleeve, and a gap filled with a working fluid between the shaft and the sleeve. The shaft is made of high manganese chrome steel or stainless steel, and the sleeve is entirely made of sintered metal of metal particles including at least 60% by weight of iron or copper. Resin, metal or water glass is impregnated in pores on a surface of the sintered metal and cured. Thereby, leakage of the working fluid to the outside of the bearing from the sleeve can be inhibited, and reduction in the pressure inside the bearing can be prevented.
摘要翻译：一种流体动力轴承装置，其能够抑制工作流体泄漏到轴承的外部，并且防止径向轴承刚性的降低，并且能够使推力轴承和径向轴承之间的间隙保持良好并且稳定地旋转。流体动力轴承装置包括相对可旋转地插入到套筒的轴承孔中的轴，具有形成在轴的外周表面和套筒的内周表面中的至少一个上的动压产生槽的径向支承表面，以及在轴和套筒之间填充有工作流体的间隙。该轴由高锰铬钢或不锈钢制成，并且套筒全部由包含至少60重量％的铁或铜的金属颗粒的烧结金属制成。将树脂，金属或水玻璃浸渍在烧结金属表面上的孔中并固化。由此，可以抑制工作流体从套筒向轴承外侧的泄漏，能够防止轴承内的压力的降低。

2. 发明申请

US20090154851A1 HYDRODYNAMIC BEARING DEVICE 失效
标题翻译：水动力轴承装置
公开(公告)号：US20090154851A1
公开(公告)日：2009-06-18
申请号：US12393542
申请日：2009-02-26
申请人： Tsutomu Hamada , Takafumi Asada , Hideaki Ohno
发明人： Tsutomu Hamada , Takafumi Asada , Hideaki Ohno
IPC分类号： F16C32/06
CPC分类号： F16C33/107 , F16C17/107 , F16C33/103 , F16C2370/12
摘要： A hydrodynamic bearing device is provided for use with a spindle motor. The hydrodynamic bearing device has a sleeve made of a sintered metal that is obtained by sintering a sintering material that is iron, an iron alloy, copper, a copper alloy or a mixture thereof. This sintered metal has independent pores, which do not communicate with each other, by selecting conditions for forming a desired sintered body within a predetermined range. The conditions includes a grain size of powdered metal of a material for the sintered metal, a molding pressure when the molded body is formed, sintering temperature and sintering period in the sintering step.
摘要翻译：提供一种用于主轴电机的流体动力轴承装置。流体动力轴承装置具有通过烧结作为铁，铁合金，铜，铜合金或其混合物的烧结材料而获得的烧结金属制的套筒。该烧结金属通过选择在预定范围内形成所需烧结体的条件，具有不相互连通的独立孔。条件包括烧结金属材料的金属粉末的粒度，成型体的成形压力，烧结温度和烧结时间。

3. 发明授权

US07186028B2 Hydrodynamic bearing device 失效
标题翻译：流体动力轴承装置
公开(公告)号：US07186028B2
公开(公告)日：2007-03-06
申请号：US11071212
申请日：2005-03-04
申请人： Takafumi Asada , Tsutomu Hamada , Hideaki Ohno , Yasunori Tokunou
发明人： Takafumi Asada , Tsutomu Hamada , Hideaki Ohno , Yasunori Tokunou
IPC分类号： F16C17/02
CPC分类号： F16C17/107 , F16C33/1025 , F16C2370/12 , Y10S384/902
摘要： A hydrodynamic bearing device capable of inhibiting leakage of a working fluid to an outside of a bearing and preventing reduction in radial bearing rigidity, and capable of keeping a gap between a thrust bearing and a radial bearing favorable and rotating stably. The hydrodynamic bearing device includes a shaft relatively rotatably inserted into a bearing hole of a sleeve, a radial bearing surface having dynamic pressure generating grooves formed on at least one of an outer peripheral surface of the shaft and an inner peripheral surface of the sleeve, and a gap filled with a working fluid between the shaft and the sleeve. The shaft is made of high manganese chrome steel or stainless steel, and the sleeve is entirely made of sintered metal of metal particles including at least 60% by weight of iron or copper. Resin, metal or water glass is impregnated in pores on a surface of the sintered metal and cured. Thereby, leakage of the working fluid to the outside of the bearing from the sleeve can be inhibited, and reduction in the pressure inside the bearing can be prevented.
摘要翻译：一种流体动力轴承装置，其能够抑制工作流体泄漏到轴承的外部，并且防止径向轴承刚性的降低，并且能够使推力轴承和径向轴承之间的间隙保持良好并且稳定地旋转。流体动力轴承装置包括相对可旋转地插入到套筒的轴承孔中的轴，具有形成在轴的外周表面和套筒的内周表面中的至少一个上的动压产生槽的径向支承表面，以及在轴和套筒之间填充有工作流体的间隙。该轴由高锰铬钢或不锈钢制成，并且套筒全部由包含至少60重量％的铁或铜的金属颗粒的烧结金属制成。将树脂，金属或水玻璃浸渍在烧结金属表面上的孔中并固化。由此，可以抑制工作流体从套筒向轴承外侧的泄漏，能够防止轴承内的压力的降低。

4. 发明授权

US07726881B2 Hydrodynamic bearing device 失效
标题翻译：流体动力轴承装置
公开(公告)号：US07726881B2
公开(公告)日：2010-06-01
申请号：US12393542
申请日：2009-02-26
申请人： Tsutomu Hamada , Takafumi Asada , Hideaki Ohno
发明人： Tsutomu Hamada , Takafumi Asada , Hideaki Ohno
IPC分类号： F16C32/06
CPC分类号： F16C33/107 , F16C17/107 , F16C33/103 , F16C2370/12
摘要： A hydrodynamic bearing device is provided for use with a spindle motor. The hydrodynamic bearing device has a sleeve made of a sintered metal that is obtained by sintering a sintering material that is iron, an iron alloy, copper, a copper alloy or a mixture thereof. This sintered metal has independent pores, which do not communicate with each other, by selecting conditions for forming a desired sintered body within a predetermined range. The conditions includes a grain size of powdered metal of a material for the sintered metal, a molding pressure when the molded body is formed, sintering temperature and sintering period in the sintering step.
摘要翻译：提供一种用于主轴电机的流体动力轴承装置。流体动力轴承装置具有通过烧结作为铁，铁合金，铜，铜合金或其混合物的烧结材料而获得的烧结金属制的套筒。该烧结金属通过选择在预定范围内形成所需烧结体的条件，具有不相互连通的独立孔。条件包括烧结金属材料的金属粉末的粒度，成型体的成形压力，烧结温度和烧结时间。

5. 发明申请

US20060029313A1 Hydrodynamic bearing device 失效
公开(公告)号：US20060029313A1
公开(公告)日：2006-02-09
申请号：US11195813
申请日：2005-08-03
申请人： Tsutomu Hamada , Takafumi Asada , Hideaki Ohno
发明人： Tsutomu Hamada , Takafumi Asada , Hideaki Ohno
IPC分类号： F16C32/06
CPC分类号： F16C33/107 , F16C17/107 , F16C33/103 , F16C2370/12
摘要： A hydrodynamic bearing device is provided for use with a spindle motor. The hydrodynamic bearing device has a sleeve made of a sintered metal that is obtained by sintering a sintering material that is iron, an iron alloy, copper, a copper alloy or a mixture thereof. This sintered metal has independent pores, which do not communicate with each other, by selecting conditions for forming a desired sintered body within a predetermined range. The conditions includes a grain size of powdered metal of a material for the sintered metal, a molding pressure when the molded body is formed, sintering temperature and sintering period in the sintering step.

6. 发明申请

US20090155116A1 HYDRODYNAMIC BEARING DEVICE 审中-公开
公开(公告)号：US20090155116A1
公开(公告)日：2009-06-18
申请号：US12393514
申请日：2009-02-26
申请人： Tsutomu Hamada , Takafumi Asada , Hideaki Ohno
发明人： Tsutomu Hamada , Takafumi Asada , Hideaki Ohno
IPC分类号： B22F3/12 , B22F3/11
CPC分类号： F16C33/107 , F16C17/107 , F16C33/103 , F16C2370/12
摘要： A hydrodynamic bearing device is provided for use with a spindle motor. The hydrodynamic bearing device has a sleeve made of a sintered metal that is obtained by sintering a sintering material that is iron, an iron alloy, copper, a copper alloy or a mixture thereof. This sintered metal has independent pores, which do not communicate with each other, by selecting conditions for forming a desired sintered body within a predetermined range. The conditions includes a grain size of powdered metal of a material for the sintered metal, a molding pressure when the molded body is formed, sintering temperature and sintering period in the sintering step.

7. 发明授权

US07513689B2 Hydrodynamic bearing device 失效
标题翻译：流体动力轴承装置
公开(公告)号：US07513689B2
公开(公告)日：2009-04-07
申请号：US11195813
申请日：2005-08-03
申请人： Tsutomu Hamada , Takafumi Asada , Hideaki Ohno
发明人： Tsutomu Hamada , Takafumi Asada , Hideaki Ohno
IPC分类号： F16C32/06
CPC分类号： F16C33/107 , F16C17/107 , F16C33/103 , F16C2370/12
摘要： A hydrodynamic bearing device is provided for use with a spindle motor. The hydrodynamic bearing device has a sleeve made of a sintered metal that is obtained by sintering a sintering material that is iron, an iron alloy, copper, a copper alloy or a mixture thereof. This sintered metal has independent pores, which do not communicate with each other, by selecting conditions for forming a desired sintered body within a predetermined range. The conditions includes a grain size of powdered metal of a material for the sintered metal, a molding pressure when the molded body is formed, sintering temperature and sintering period in the sintering step.
摘要翻译：提供一种用于主轴电机的流体动力轴承装置。流体动力轴承装置具有通过烧结作为铁，铁合金，铜，铜合金或其混合物的烧结材料而获得的烧结金属制的套筒。该烧结金属通过选择在预定范围内形成所需烧结体的条件，具有不相互连通的独立孔。条件包括烧结金属材料的金属粉末的粒度，成型体的成形压力，烧结温度和烧结时间。

8. 发明申请

US20050169561A1 Fluid bearing device 审中-公开
标题翻译：流体轴承装置
公开(公告)号：US20050169561A1
公开(公告)日：2005-08-04
申请号：US10512662
申请日：2004-03-10
申请人： Takafumi Asada , Tsutomu Hamada , Hideaki Ohno , Keigo Kusaka
发明人： Takafumi Asada , Tsutomu Hamada , Hideaki Ohno , Keigo Kusaka
IPC分类号： F16C17/10 , F16C33/10 , F16C33/12 , F16C32/06
CPC分类号： F16C33/107 , F16C17/026 , F16C17/107 , F16C33/12 , F16C2370/12
摘要： In order to suppress the increase of torque loss at low temperature and the increase of shaft swinging at high temperature and to improve the workability of the sleeve, high manganese chromium steel or austenitic stainless steel is used as the material of the shaft, sulfur free-machining steel is used as the material of the sleeve, and the surface thereof is coated with plating primarily containing nickel and phosphorus. Hence, it is possible to obtain a hydrodynamic bearing wherein the changes in the characteristics of the bearing owing to the change in the viscosity of a lubricant depending on temperature change can be prevented, in addition, the workability of the sleeve and the dynamic pressure generation grooves and the wear resistance of the bearing can be made best.
摘要翻译：为了抑制低温下的扭矩损失的增加和高温时的轴摆动的增加，提高套筒的加工性，使用高锰铬钢或奥氏体不锈钢作为轴的材料，使用加工钢作为套筒的材料，其表面涂覆有主要含有镍和磷的电镀。因此，可以获得流体动力轴承，其中可以防止由于根据温度变化导致的润滑剂的粘度变化导致的轴承特性的变化，此外，可以防止套筒的可加工性和动压产生凹槽和轴承的耐磨性能最好。

9. 发明授权

US06760187B2 Hydrodynamic bearing and disk apparatus 失效
标题翻译：流体动力轴承和圆盘装置
公开(公告)号：US06760187B2
公开(公告)日：2004-07-06
申请号：US10170752
申请日：2002-06-13
申请人： Takafumi Asada , Hiroaki Saito , Hideaki Ohno
发明人： Takafumi Asada , Hiroaki Saito , Hideaki Ohno
IPC分类号： G11B1702
CPC分类号： F16C33/107 , F16C17/107 , F16C33/103 , F16C2240/46 , F16C2240/70 , F16C2370/12 , G11B19/2009
摘要： In a hydrodynamic bearing according to the present invention a fixed shaft has different diameter sizes by positions so that overflow or splashing of lubricant out of the apparatus is prevented due to a centrifugal force during high-speed rotation, and lubricant reservoirs are provided in narrower clearances and in wider clearances so that the lubricant is induced to move toward lubricant reservoirs in narrower clearances due to surface tension while the hydrodynamic bearing is in stop, therefore overflow of the lubricant is prevented at the time of starting up.
摘要翻译：在根据本发明的流体动力轴承中，固定轴通过位置具有不同的直径尺寸，使得由于高速旋转期间的离心力而防止润滑剂从设备中溢出或飞溅，并且在较窄的间隙中提供润滑剂储存器并且在更宽的间隙中，使得润滑剂由于表面张力而在更窄的间隙中朝向润滑剂储存器移动，同时流体动力轴承停止，因此在启动时防止润滑剂的溢出。

10. 发明授权

US4573807A Fluid bearing device 失效
标题翻译：流体轴承装置
公开(公告)号：US4573807A
公开(公告)日：1986-03-04
申请号：US696244
申请日：1985-01-29
申请人： Takafumi Asada , Churyo Yoshida , Minoru Koda , Hideaki Ohno
发明人： Takafumi Asada , Churyo Yoshida , Minoru Koda , Hideaki Ohno
IPC分类号： F16C17/10 , F16C33/00 , F16C33/10 , G11B5/53 , G11B15/61 , G11B33/14 , F16C32/06
CPC分类号： F16C33/107 , F16C17/045 , F16C33/102 , G11B15/61 , G11B33/1473 , G11B5/53
摘要： A fluid bearing device including a shaft, a sleeve rotatably supported by the shaft, a thrust bearing plate supported by the sleeve, a radial groove formed on one of an outer periphery of the shaft and an inner periphery of the sleeve, and a spiral groove formed on one of one end face of the shaft and one face of the thrust bearing plate such that the radial groove retains oil, while the spiral groove retains grease containing thickener and base oil identical, in compositions and viscosity, with the oil of the radial groove.
摘要翻译：一种流体轴承装置，包括轴，由轴可旋转地支撑的套筒，由套筒支撑的止推轴承板，形成在轴的外周和套筒的内周之一上的径向槽，以及螺旋槽形成在轴的一个端面和止推轴承板的一个表面之一上，使得径向槽保持油，而螺旋槽保持润滑剂，其含有增稠剂和基础油在组成和粘度方面与径向的油相同槽。

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