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公开(公告)号：US09989091B2
公开(公告)日：2018-06-05
申请号：US14776992
申请日：2014-02-19
CPC分类号： F16C33/145 , F16C17/107 , F16C33/104 , F16C33/106 , F16C33/74 , F16C2360/46 , F16C2380/26 , H02K5/1675 , H02K7/08
摘要： Provided is a fluid dynamic bearing device (1) including a rotary body (2A), a bearing member (22) (sleeve portion) made of a sintered metal arranged on the rotary body (2A), having end surfaces (22b, 22c), a thrust bearing gap formed by a lower end surface (22c) of the bearing member (22), filled with lubricating oil (11), and a thrust dynamic pressure generating portion (B). A dynamic pressure generating action is caused in the lubricating oil in the thrust bearing gap along with rotation of the rotary body (2A) to support the rotary body (2A) in one thrust direction in a non-contact manner. The bearing member (22) has an oil permeability of 4% or more with respect to a mass flow rate of the lubricating oil (11) flowing along the thrust dynamic pressure generating portion (B) during the rotation of the rotary body (2A).
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公开(公告)号：US08864380B2
公开(公告)日：2014-10-21
申请号：US13575495
申请日：2011-02-24
申请人： Tetsuya Kurimura
发明人： Tetsuya Kurimura
CPC分类号： F16C17/08 , F16C17/107 , F16C33/74 , F16C35/02 , F16C2370/12 , H02K5/1675
摘要： A fluid dynamic bearing device 1 has a bearing sleeve 8, a shaft member 2 which is inserted in the inner periphery of the bearing sleeve, a housing 7 which is formed by pressing, has the bearing sleeve 8 press-fitted in the inner periphery thereof, and has a stepped section 7d which engages with the end surface of the bearing sleeve and is located ahead in the direction of press-fitting of the bearing sleeve 8, a thrust receiver 9 which is in contact with and supports an end of the shaft member 2, and a seal portion 10 which prevents oil from leaking from the inside of the housing. A dynamic pressure generating groove 8a1 for generating fluid dynamic pressure in a radial bearing gap between the outer peripheral surface of the shaft member 2 and the inner peripheral surface of the bearing sleeve 8 is formed in the inner peripheral surface of the bearing sleeve 8.
摘要翻译： 流体动力轴承装置1具有轴承套筒8，插入在轴承套筒的内周的轴构件2，通过按压而形成的壳体7具有压入内周的轴承套筒8 并且具有与轴承套筒的端面接合并且沿着轴承套筒8的压配方向位于前方的台阶部7d，推力接收器9与轴接触并支撑轴的端部 构件2和密封部分10，其防止油从壳体的内部泄漏。 在轴承套筒8的内周面形成有用于在轴构件2的外周面与轴承套筒8的内周面之间的径向轴承间隙中产生流体动压的动压产生槽8a1。
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公开(公告)号：US20130336604A1
公开(公告)日：2013-12-19
申请号：US14002037
申请日：2012-02-28
申请人： Hiroyuki Noda , Natsuhiko Mori , Tetsuya Kurimura , Isao Komori , Masaharu Hori , Kimihiko Bito , Toshiyuki Mizutani
发明人： Hiroyuki Noda , Natsuhiko Mori , Tetsuya Kurimura , Isao Komori , Masaharu Hori , Kimihiko Bito , Toshiyuki Mizutani
IPC分类号： F16C32/06
CPC分类号： F16C32/0633 , F16C17/026 , F16C17/107 , F16C33/107 , F16C33/14 , F16C43/02 , F16C2220/20 , F16C2220/40 , F16C2220/44 , F16C2220/70 , F16C2223/02 , F16C2226/12 , F16C2226/52 , F16C2240/40 , F16C2370/12 , G11B19/2036
摘要： An inner peripheral surface and a lower end surface of a bearing sleeve made of a sintered metal are each formed into a smooth cylindrical surface or a flat surface that does not have a dynamic pressure generating portion. Thus, a step of forming the dynamic pressure generating portion can be omitted from a manufacturing step of the bearing sleeve, and cost of dies can be markedly reduced. Further, the inner peripheral surface of the bearing sleeve is formed into the smooth cylindrical surface, and hence a radial dynamic pressure generating portion is formed on an outer peripheral surface of a shaft member. However, the outer peripheral surface of the shaft portion is accessible to tools, and hence the radial dynamic pressure generating portion can be formed easily with high accuracy. As a result, accuracy of a radial bearing gap is enhanced so that a bearing rigidity is enhanced.
摘要翻译： 由烧结金属制成的轴承套的内周面和下端面分别形成为没有动压产生部的光滑圆柱面或平面。 因此，可以从轴承套筒的制造步骤中省略形成动压产生部的步骤，并且可以显着降低模具的成本。 此外，轴承套筒的内周面形成为平滑的圆筒形表面，因此在轴构件的外周面上形成径向动压产生部。 然而，轴部的外周面能够被工具接近，因此能够容易地高精度地形成径向动压产生部。 结果，径向轴承间隙的精度提高，从而提高了轴承刚度。
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公开(公告)号：US20120315169A1
公开(公告)日：2012-12-13
申请号：US13580091
申请日：2011-03-28
申请人： Masaharu Hori , Jun Hirade , Tatsuya Hayashi , Yasuhiro Yamamoto , Natsuhiko Mori , Fuminori Satoji , Toshiaki Niwa , Tetsuya Kurimura , Kimihiko Bito
发明人： Masaharu Hori , Jun Hirade , Tatsuya Hayashi , Yasuhiro Yamamoto , Natsuhiko Mori , Fuminori Satoji , Toshiaki Niwa , Tetsuya Kurimura , Kimihiko Bito
CPC分类号： H02K5/1672 , F16C17/107 , F16C33/107 , F16C33/128 , F16C33/14 , F16C43/02 , F16C2220/04 , F16C2220/20 , F16C2226/12 , F16C2226/14 , F16C2226/40 , F16C2360/46 , H02K2205/03 , H02K2213/09
摘要： Providing a fluid dynamic bearing device, wherein the outer member comprises a member formed by a pressing process on a plate member, the radial bearing surface and at least the one of the thrust bearing surfaces of the outer member being formed by the pressing process, and wherein at least a part of the inner member, which forms the radial bearing surface and the thrust bearing surfaces of the inner member, is made of a sintered metal.
摘要翻译： 提供一种流体动力轴承装置，其中外部构件包括通过在板构件上的压制工艺形成的构件，径向支承表面和外部构件的至少一个推力支承表面通过压制工艺形成，并且 其中形成所述径向支承面的所述内部构件的至少一部分和所述内部构件的推力承载面由所述烧结金属制成。
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公开(公告)号：US20100166346A1
公开(公告)日：2010-07-01
申请号：US12721053
申请日：2010-03-10
申请人： Masaharu HORI , Tetsuya KURIMURA
发明人： Masaharu HORI , Tetsuya KURIMURA
CPC分类号： G11B19/2009 , F16C17/107 , F16C33/107 , F16C33/745 , F16C2370/12 , H02K5/1675 , Y10T29/49645
摘要： A dynamic bearing device is provided, which can prevent abrasion powder generated when a sealing member is pushed into an inner circumference of a housing from entering the housing. A sealing member is inserted into an inner circumference of an opening of a housing with an adhesive interposed therebetween The adhesive moving forward in a pushing direction of the sealing member is retained by a capillary action in a lower tapered space between an outer circumference of the sealing member and the inner circumference of the housing. Abrasion powder is captured by the adhesive in the tapered space so as to be confined in the adhesive as a result of the setting of the adhesive.
摘要翻译： 提供一种动态轴承装置，其可以防止当密封构件被推入壳体的内周时产生的磨损粉末进入壳体。 密封构件插入到壳体的开口的内周中，其间插入有粘合剂。沿密封构件的推动方向向前移动的粘合剂通过毛细作用保持在密封件的外周之间的下锥形空间中 构件和壳体的内周。 磨损粉末由锥形空间中的粘合剂捕获，以便由于粘合剂的固定而被限制在粘合剂中。
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公开(公告)号：US07556433B2
公开(公告)日：2009-07-07
申请号：US11347563
申请日：2006-02-06
CPC分类号： G11B19/2018 , F16C17/028 , F16C17/107 , F16C33/103 , F16C33/107 , F16C33/1075 , F16C2370/12 , H02K7/085 , Y10T29/49659
摘要： A fluid dynamic bearing device is mainly composed of a housing, a bearing sleeve, and a rotary member. The housing is formed by a side portion formed through injection molding of a resin material, and a bottom member fixed to a fixing portion provided in the inner periphery at one axial end of the side portion and adapted to close an opening at one axial end of the side portion. The fixing portion is a molding surface formed through solidification, in conformity with the inner surface of the mold, of the resin injected by the injection molding.
摘要翻译： 流体动力轴承装置主要由壳体，轴承套筒和旋转构件构成。 壳体由通过树脂材料的注射成型形成的侧部形成，以及底部构件，其固定到设置在侧部的一个轴向端部处的内周中的固定部分，并且适于将一个开口封闭在一个轴向端部 侧面部分。 固定部是通过注射成型注入的树脂与模具的内表面固化而形成的成型面。
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公开(公告)号：US20070230843A1
公开(公告)日：2007-10-04
申请号：US11759747
申请日：2007-06-07
IPC分类号： F16C33/74
CPC分类号： G11B19/2009 , F16C17/10 , F16C17/107 , F16C33/103 , F16C33/104 , F16C33/107 , F16C33/1075 , F16C33/1085 , F16C33/745 , F16C2240/46 , F16C2370/12
摘要： An inner space of a housing sealed with a seal member as well as internal pores of a bearing member (pores in a porous structure) are filled with a lubricating oil without the presence of air, so that the oil surface of the lubricating oil is within a seal space. Under a reduced pressure of 100 Torr, no lubricating oil leaks outside of the housing even at any attitude of the fluid lubricated bearing device such as normal, inverted, or horizontal attitude.
摘要翻译： 用密封构件密封的壳体的内部空间以及轴承构件的内部孔（多孔结构中的孔）在没有空气的情况下填充润滑油，使得润滑油的油表面在 密封空间。 在100乇的减压下，即使在流体润滑的轴承装置的任何姿态下，例如正常的，倒置的或水平的姿态，也不会在壳体外面泄漏润滑油。
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公开(公告)号：US06921208B2
公开(公告)日：2005-07-26
申请号：US10364660
申请日：2003-02-10
IPC分类号： F16C17/02 , F16C17/04 , F16C17/10 , F16C17/26 , F16C33/10 , F16C33/74 , F16C43/02 , H02K5/16 , H02K7/08 , F16C32/06
CPC分类号： F16C17/107 , F16C33/107 , F16C43/02 , Y10T29/49636 , Y10T29/49639 , Y10T29/49645 , Y10T29/49647 , Y10T29/49696 , Y10T29/497
摘要： The thrust member is inserted into the inner circumferential surface of the housing, to make the end face of the thrust member contact with the lower side end face of the flange portion, and at the same time, to make the upper side end face of the flange portion contact with the lower side end face of the bearing sleeve. This stated is that the thrust bearing gap is zero. Then, the thrust member is made to relatively move with respect to the housing and the bearing sleeve in the axial direction together with the axis member, with a dimension δ(δ=δ1+δ2) that is equivalent to the sum of the thrust bearing gap (size is δ1) of the first thrust bearing portion and the thrust bearing gap (size is δ2) of the second thrust bearing portion. Then, as the thrust member is fixed to the housing at that position, the predetermined thrust bearing gap δ(δ=δ1+δ2) is formed.
摘要翻译： 将推力构件插入壳体的内周面，使推力构件的端面与凸缘部的下侧端面接触，同时使上侧面端面 凸缘部分与轴承套筒的下侧端面接触。 这表明推力轴承间隙为零。 然后，使推力构件相对于壳体和轴承套筒与轴构件一起相对于轴向套筒相对移动，尺寸δ（delta = delta 1 + delta2）等于推力的总和 第一止推轴承部分的轴承间隙（尺寸为Δ1）和第二止推轴承部分的推力轴承间隙（尺寸为Δ2）。 然后，当推力构件固定在该位置处的壳体时，形成预定推力轴承间隙delta（delta = delta 1 + delta2）。
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公开(公告)号：US06843602B2
公开(公告)日：2005-01-18
申请号：US09985187
申请日：2001-11-01
CPC分类号： F16C33/107 , F16C17/107 , F16C25/045 , F16C33/104 , F16C33/1085 , F16C33/74 , F16C2240/42 , F16C2370/22
摘要： A hydrodynamic bearing unit is provided, by which the touch between oil and a sealing member in a housing is prevented to prevent oil leakage. A bearing member made of a sintered lubricant-containing metal is disposed along the inner periphery of the housing and a spindle is supported in a non-contact manner by the hydrodynamic oil pressure that is generated in a bearing gap by the rotation of the spindle. The opening of the housing is sealed by the sealing member. A ventilation path is formed so as to communicate a sealed space enclosed by the distal end of the spindle at the bottom of the housing, the bearing member and the housing with open air. An oil reservoir is formed between the inner periphery of the housing and the outer periphery of the bearing member at the end portion of the opening side of the housing. The oil reservoir is made so as to communicate with the ventilation path.
摘要翻译： 提供了一种流体动力轴承单元，通过该流体动力轴承单元防止油和壳体中的密封构件之间的接触以防止油泄漏。 由含有烧结的含润滑剂的金属构成的支承构件沿着壳体的内周设置，并且通过主轴的旋转在轴承间隙中产生的流体动力学油压以非接触的方式支撑心轴。 壳体的开口由密封构件密封。 形成通气路径，以便在壳体的底部，轴承构件和外壳之间以敞开的空气连通由主轴的远端包围的密封空间。 在壳体的内周和壳体的开口侧的端部的轴承构件的外周之间形成储油部。 储油器与通气路径连通。
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公开(公告)号：US06513979B2
公开(公告)日：2003-02-04
申请号：US09912438
申请日：2001-07-26
申请人： Natsuhiko Mori , Tetsuya Kurimura
发明人： Natsuhiko Mori , Tetsuya Kurimura
IPC分类号： F16C3206
CPC分类号： F16C17/107 , F16C33/104 , F16C33/107
摘要： A hydrodynamic oil-impregnated sintered bearing unit 1 are comprised a hydrodynamic oil-impregnated sintered bearing 1a, a housing 1b, and a thrust bearing portion for thrust-supporting a shaft. A sealing washer 20 made of metal or resin material is arranged on an opening-portion side of the housing 1b, and that, of a surface of the shaft 2, at least on a region including a portion opposite to the sealing washer 20 a thin layer 21 of a fluorine-containing polymer is formed.
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