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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。
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公开(公告)号：US20090152968A1
公开(公告)日：2009-06-18
申请号：US12320256
申请日：2009-01-22
申请人： Katsuo Ishikawa , Tsutomu Hamada
发明人： Katsuo Ishikawa , Tsutomu Hamada
IPC分类号： H02K5/167
CPC分类号： H02K5/1675 , H02K1/02 , H02K1/146 , H02K5/00
摘要： A spindle motor including a rotor hub which is rotationally driven by a magnetic action of a rotational magnetic field generated when a current is applied to a wire wound around teeth of a stator core and a magnetic field of a magnet provided on a rotor. Herein, the stator core formed by laminating magnetic steel plates is mounted to an outer periphery of a supporting part of a rotation support shaft of the rotor hub, and the supporting part is made of sintered metal containing a ferromagnetic material. This spindle motor can suppress generation of vibration and noise even when it is reduced in size.
摘要翻译： 一种主轴电动机，其包括转子毂，所述转子毂由当电流施加到缠绕在定子芯的齿上的线和设置在转子上的磁体的磁场时产生的旋转磁场的磁作用旋转驱动。 这里，通过层叠电磁钢板形成的定子铁心安装在转子轮毂的旋转支撑轴的支撑部的外周，支撑部由含铁磁材料的烧结金属制成。 即使减小了主轴电机，也能够抑制振动和噪音的产生。
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53.发明申请HYDRODYNAMIC BEARING DEVICE, AND SPINDLE MOTOR AND INFORMATION PROCESSING APPARATUS EQUIPPED WITH THE SAME 审中-公开水动力轴承装置及主轴装置及其相关信息处理装置公开(公告)号：US20090073596A1
公开(公告)日：2009-03-19
申请号：US12169474
申请日：2008-07-08
申请人： Takafumi Asada , Tsutomu Hamada , Katsuo Ishikawa
发明人： Takafumi Asada , Tsutomu Hamada , Katsuo Ishikawa
摘要： A hydrodynamic bearing device comprises a sleeve composed of a sintered member, a shaft that is inserted in a state of being capable of relative rotation into a bearing hole provided to the sleeve, and a hydrodynamic groove formed in the outer peripheral surface of the shaft and/or the inner peripheral surface of the sleeve. The sleeve has a surface porosity of 1.5% or less, and the ridge width is at least 0.10 mm.
摘要翻译： 流体动力轴承装置包括由烧结构件构成的套筒，以能够相对旋转到设置于套筒的轴承孔的状态插入的轴和形成在轴的外周面中的流体动力槽， /或套筒的内周面。 套筒的表面孔隙率为1.5％以下，脊宽度为0.10mm以上。
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54.发明授权公开(公告)号：US07444083B2
公开(公告)日：2008-10-28
申请号：US10886650
申请日：2004-07-09
申请人： Yuichi Ohashi , Kenji Matsumoto , Hiroyuki Hiiro , Yoshisada Nakamura , Mikihiko Kato , Osamu Ueno , Tsutomu Hamada , Shinya Kyozuka , Hideo Nakayama , Tomo Baba
发明人： Yuichi Ohashi , Kenji Matsumoto , Hiroyuki Hiiro , Yoshisada Nakamura , Mikihiko Kato , Osamu Ueno , Tsutomu Hamada , Shinya Kyozuka , Hideo Nakayama , Tomo Baba
CPC分类号： G02B6/02038 , G02B6/0288 , G02B6/425 , H04B10/2581
摘要： In an optical signal transmission system which can perform high-speed optical transmission not lower than 1 Gbps, VCSEL has light-emission points. A core diameter of an optical fiber GI-POF is set to not lower than 200 μm, and the light-emission points of VCSEL are arranged inside an outer periphery at an end face of GI-POF. A polymerization composition material constituting the core of GI-POF is made of a compound containing deuterated poly methacrylic ester. A wavelength of the light beam of VCSEL is set to the range of 770 nm to 810 nm.
摘要翻译： 在能够执行不低于1Gbps的高速光传输的光信号传输系统中，VCSEL具有发光点。 光纤GI-POF的纤芯直径设定为不低于200μm，VCSEL的发光点布置在GI-POF的端面的外周的内侧。 构成GI-POF核心的聚合组合物由含有氘化聚甲基丙烯酸酯的化合物制成。 VCSEL的光束的波长设定在770nm〜810nm的范围。
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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。
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56.发明申请Sleeve for hydrodynamic bearing device, hydrodynamic bearing device and spindle motor using the same, and method for manufacturing sleeve 审中-公开用于流体动力轴承装置的套筒，使用其的流体动力轴承装置和主轴电机以及用于制造套筒的方法公开(公告)号：US20070047857A1
公开(公告)日：2007-03-01
申请号：US11509770
申请日：2006-08-25
申请人： Tsutomu Hamada , Takafumi Asada , Katsuo Ishikawa
发明人： Tsutomu Hamada , Takafumi Asada , Katsuo Ishikawa
CPC分类号： F16C33/14 , F16C17/107 , F16C2220/20 , F16C2220/60 , F16C2223/04 , F16C2223/08 , F16C2370/12
摘要： A bearing stiffness of a sintered metal sleeve is prevented from lowering. A sleeve includes an inner section formed of metal powder for sintering and a resin for impregnation, and a surface deformation section which covers a surface of the inner section and is formed by shot blast process. Since the surface deformation section is formed by the shot blast process, the number of pores formed between the metal powder for sintering near the surface can be reduced. In this way, a supporting pressure at a bearing portion can be prevented from being released out through the pores, and the bearing stiffness can be prevented from lowering.
摘要翻译： 防止烧结金属套筒的轴承刚度降低。 套筒包括由用于烧结的金属粉末形成的内部部分和用于浸渍的树脂，以及覆盖内部部分的表面并通过喷丸处理形成的表面变形部分。 由于通过喷丸法形成表面变形部，因此可以减少在表面附近烧结用金属粉末之间形成的细孔数。 以这种方式，可以防止轴承部分处的支撑压力通过孔排出，并且可以防止轴承刚度的降低。
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57.发明申请Optical transmission device that employs vertical cavity surface-emitting laser diode as light source 失效采用垂直腔表面发射激光二极管作为光源的光传输装置公开(公告)号：US20050180688A1
公开(公告)日：2005-08-18
申请号：US11041442
申请日：2005-01-25
申请人： Osamu Ueno , Masao Funada , Masaaki Miura , Tsutomu Hamada , Shinya Kyozuka , Osamu Takanashi , Hideo Nakayama , Jun Sakurai , Akira Sakamoto
发明人： Osamu Ueno , Masao Funada , Masaaki Miura , Tsutomu Hamada , Shinya Kyozuka , Osamu Takanashi , Hideo Nakayama , Jun Sakurai , Akira Sakamoto
CPC分类号： G02B6/4206 , G02B6/4202 , G02B6/4292
摘要： The first and second light-emitting regions are provided on the light source. When the first optical fiber having the first core diameter is connected, the light emitted from the first light-emitting region enters the first core. When the second optical fiber having a greater core diameter than the first core diameter is connected, the lights emitted from the first and second light-emitting regions enter the second core. It is thus possible to connect the optical transmission device with multiple optical fibers having different core diameters. It is thus possible to provide the optical transmission device and the communication device, which are low in cost and high in convenience.
摘要翻译： 第一发光区域和第二发光区域设置在光源上。 当连接具有第一纤芯直径的第一光纤时，从第一发光区域发射的光线进入第一芯体。 当连接具有比第一纤芯直径更大的芯径的第二光纤时，从第一和第二发光区域发射的光进入第二芯。 因此，可以将光传输装置与具有不同芯径的多根光纤连接。 因此，可以提供成本低，便利性高的光传输装置和通信装置。
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公开(公告)号：US20050100282A1
公开(公告)日：2005-05-12
申请号：US10695828
申请日：2003-10-30
申请人： Junji Okada , Takehiro Niitsu , Tsutomu Hamada , Masao Funada , Hidenori Yamada , Shinya Kyozuka , Tomo Baba , Shinobu Ozeki , Osamu Takanashi , Masaaki Miura
发明人： Junji Okada , Takehiro Niitsu , Tsutomu Hamada , Masao Funada , Hidenori Yamada , Shinya Kyozuka , Tomo Baba , Shinobu Ozeki , Osamu Takanashi , Masaaki Miura
CPC分类号： G02B6/43 , G02B6/2808 , G02B6/2817 , G02B6/3897
摘要： In a device of the present invention for allowing signal light to enter a light guide body using an optical fiber, a light guide body, which is constituted by dispersing particles for scattering the signal light in an optical medium, is selected as a light guide path which requires an area where a light diffusing function is performed just after incidence of the signal light. An optical connecting material intervenes between one end of the optical fiber from which the signal light is output and opposed one end surface of a particle dispersing light guide body and a desired diffusing function is obtained.
摘要翻译： 在使用光纤使信号光进入导光体的本发明的装置中，选择通过将信号光分散在光介质中的粒子分散而构成的导光体作为导光路 这需要在信号光入射之后执行光漫射功能的区域。 光学连接材料插入在信号光从其输出并与颗粒分散导光体的一个端面相对的光纤的一端和期望的漫射功能之间。
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公开(公告)号：US07796848B2
公开(公告)日：2010-09-14
申请号：US11589473
申请日：2006-10-30
申请人： Osamu Ueno , Masao Funada , Tsutomu Hamada , Junji Okada , Takehiro Niitsu
发明人： Osamu Ueno , Masao Funada , Tsutomu Hamada , Junji Okada , Takehiro Niitsu
IPC分类号： G02B6/26
CPC分类号： G02B6/3604 , G02B6/32 , G06F1/1616 , G06F1/1681 , G06F1/1683
摘要： An electronic apparatus includes: a first frame and a second frame that are relatively movable; a frame boundary portion that is provided between the first frame and the second frame; a light emitting portion that is provided on the first frame and transmits an optical signal; a light receiving portion that is provided on the second frame and receives the optical signal; and an optical transmission medium that transmits the optical signal between the frame boundary portion and at least one of the light emitting portion and the light receiving portion, wherein an optical transmission between the light emitting portion and the light receiving portion via the optical transmission medium is effected at the frame boundary portion by a spatial optical transmission.
摘要翻译： 电子设备包括：第一框架和第二框架，其可相对移动; 设置在所述第一框架和所述第二框架之间的框架边界部分; 发光部分，其设置在所述第一帧上并发送光信号; 光接收部分，设置在第二帧上并接收光信号; 以及光传输介质，其在所述框架边界部分与所述发光部分和所述光接收部分中的至少一个之间传输所述光信号，其中，所述光发射部分和所述光接收部分之间经由所述光传输介质的光传输是 通过空间光传输在帧边界部分进行。
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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
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.
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