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公开(公告)号：US20090297076A1
公开(公告)日：2009-12-03
申请号：US12063174
申请日：2006-08-10
申请人： Kazutoyo Murakami , Masaki Egami , Kenji Ito , Isao Komori , Mitsuo Sasabe
发明人： Kazutoyo Murakami , Masaki Egami , Kenji Ito , Isao Komori , Mitsuo Sasabe
IPC分类号： F16C32/06
CPC分类号： H02K7/085 , F16C17/107 , F16C35/02
摘要： A hub portion of a fluid dynamic bearing device is formed from a resin composition in which polyphenylene sulfide (PPS) is employed as a base resin and with which carbon fibers are mixed. In this manner, the wear resistance and the conductivity can be improved. Alternatively, both portions of a stationary body and a rotating body of the fluid dynamic bearing device which portions face to each other through a bearing gap are formed from a resin composition in which polyphenylene sulfide (PPS) is employed as the base resin. In this manner, excellent wear resistance can be obtained.
摘要翻译： 流体动力轴承装置的轮毂部由树脂组合物形成，其中使用聚苯硫醚（PPS）作为基础树脂并与其混合碳纤维。 以这种方式，可以提高耐磨性和导电性。 或者，通过使用聚苯硫醚（PPS）作为基础树脂的树脂组合物形成通过轴承间隙彼此面对的流体动力轴承装置的固定体和旋转体的两部分。 以这种方式，可以获得优异的耐磨性。
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公开(公告)号：US20090302697A1
公开(公告)日：2009-12-10
申请号：US12063073
申请日：2006-04-11
申请人： Kazutoyo Murakami , Masaki Egami , Kenji Ito , Isao Komori
发明人： Kazutoyo Murakami , Masaki Egami , Kenji Ito , Isao Komori
CPC分类号： F16C17/107 , F16C43/02 , F16C2370/12
摘要： Provided is a housing for a resin fluid dynamic bearing device in which deterioration with time of a fixing force for another member is mitigated and which can maintain a high bearing performance for a long period of time. The housing formed of a resin composition exhibiting a compression creep amount of 8% or less when a compressive pressure of 80 MPa is applied for 168 hours at an atmosphere temperature of 80° C., provides a sufficient fixing force for the another member fixed with a press-fitting force, for example, a bearing sleeve press-fitted into an inner periphery of the housing even after a long term use. Thus, there is no fear of fixing positions of the another member with respect to the housing being deviated and a high bearing performance is maintained for a long period of time.
摘要翻译： 本发明提供一种用于树脂流体动力轴承装置的壳体，其中减轻了另一构件的固定力随时间的劣化，并且能够长期保持较高的轴承性能。 当在80℃的气氛温度下施加80MPa的压缩压力168小时时，由表现出8％以下的压缩蠕变量的树脂组合物形成的壳体，为固定在其上的另一构件提供足够的固定力 压配合力，例如即使在长期使用后也被压配合到壳体的内周的轴承套筒。 因此，不会担心另一构件相对于壳体偏离的位置固定，并且长时间保持较高的轴承性能。
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公开(公告)号：US08778242B2
公开(公告)日：2014-07-15
申请号：US13361503
申请日：2012-01-30
申请人： Kazutoyo Murakami , Masaki Egami , Kenji Ito , Isao Komori
发明人： Kazutoyo Murakami , Masaki Egami , Kenji Ito , Isao Komori
IPC分类号： B29C45/76
CPC分类号： F16C17/107 , F16C43/02 , F16C2370/12
摘要： Provided is a housing for a resin fluid dynamic bearing device in which deterioration with time of a fixing force for another member is mitigated and which can maintain a high bearing performance for a long period of time. The housing formed of a resin composition exhibiting a compression creep amount of 8% or less when a compressive pressure of 80 MPa is applied for 168 hours at an atmosphere temperature of 80° C., provides a sufficient fixing force for the another member fixed with a press-fitting force, for example, a bearing sleeve press-fitted into an inner periphery of the housing even after a long term use. Thus, there is no fear of fixing positions of the another member with respect to the housing being deviated and a high bearing performance is maintained for a long period of time.
摘要翻译： 本发明提供一种用于树脂流体动力轴承装置的壳体，其中减轻了另一构件的固定力随时间的劣化，并且能够长期保持较高的轴承性能。 当在80℃的气氛温度下施加80MPa的压缩压力168小时时，由表现出8％以下的压缩蠕变量的树脂组合物形成的壳体，为固定在其上的另一构件提供足够的固定力 压配合力，例如即使在长期使用后也被压配合到壳体的内周的轴承套筒。 因此，不会担心另一构件相对于壳体偏离的位置固定，并且长时间保持较高的轴承性能。
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公开(公告)号：US08388226B2
公开(公告)日：2013-03-05
申请号：US13425083
申请日：2012-03-20
CPC分类号： H02K7/085 , B29C45/34 , B29K2081/04 , B29K2105/12 , B29K2707/04 , F16C17/107 , F16C35/02 , F16C2370/12
摘要： A dynamic bearing device allows production of a smaller housing at low cost and suppresses ion elution from the resin portion to thereby maintain cleanliness in the dynamic bearing device and exert a desired bearing performance. A dynamic bearing device 1 is equipped with a bearing sleeve 8 fixed to the inner periphery of the housing 7, and a rotary member rotatable relative to the bearing sleeve 8 and the housing 7, in which the rotary member is supported in the radial direction and the thrust direction in a non-contact manner by a dynamic pressure action of a lubricant fluid generated in a bearing clearance. The housing 7 is formed by injection molding of a resin composition containing polyphenylene sulfide (PPS) as the base resin and PAN type carbon fibers as a filler.
摘要翻译： 动态轴承装置允许以低成本生产较小的壳体，并且抑制从树脂部分的离子洗脱，从而保持动态轴承装置的清洁度并发挥期望的轴承性能。 动态轴承装置1配备有固定到壳体7的内周的轴承套筒8和可相对于轴承套筒8和壳体7旋转的旋转构件，旋转构件沿径向方向被支撑， 通过在轴承间隙中产生的润滑剂流体的动态压力作用以非接触方式推动推力方向。 外壳7通过以聚苯硫醚（PPS）为基础树脂和PAN型碳纤维作为填料的树脂组合物的注射成型而形成。
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公开(公告)号：US20120175984A1
公开(公告)日：2012-07-12
申请号：US13425083
申请日：2012-03-20
CPC分类号： H02K7/085 , B29C45/34 , B29K2081/04 , B29K2105/12 , B29K2707/04 , F16C17/107 , F16C35/02 , F16C2370/12
摘要： Disclosed is a dynamic bearing device which allows production of a smaller housing at low cost and which suppresses ion elution from the resin portion to thereby maintain cleanliness in the dynamic bearing device and exert a desired bearing performance. A dynamic bearing device 1 is equipped with a bearing sleeve 8 fixed to the inner periphery of the housing 7, and a rotary member rotatable relative to the bearing sleeve 8 and the housing 7, in which the rotary member is supported in the radial direction and the thrust direction in a non-contact manner by a dynamic pressure action of a lubricant fluid generated in a bearing clearance. The housing 7 is formed by injection molding of a resin composition containing polyphenylene sulfide (PPS) as the base resin and PAN type carbon fibers as a filler.
摘要翻译： 公开了一种动态轴承装置，其允许以低成本生产较小的壳体，并且其抑制了从树脂部分的离子洗脱，从而保持动态轴承装置的清洁度并发挥期望的轴承性能。 动态轴承装置1配备有固定到壳体7的内周的轴承套筒8和可相对于轴承套筒8和壳体7旋转的旋转构件，旋转构件沿径向方向被支撑， 通过在轴承间隙中产生的润滑剂流体的动态压力作用以非接触方式推动推力方向。 外壳7通过以聚苯硫醚（PPS）为基础树脂和PAN型碳纤维作为填料的树脂组合物的注射成型而形成。
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公开(公告)号：US20080309183A1
公开(公告)日：2008-12-18
申请号：US11659079
申请日：2005-08-01
CPC分类号： H02K7/085 , B29C45/34 , B29K2081/04 , B29K2105/12 , B29K2707/04 , F16C17/107 , F16C35/02 , F16C2370/12
摘要： Disclosed is a dynamic bearing device which allows production of a smaller housing at low cost and which suppresses ion elution from the resin portion to thereby maintain cleanliness in the dynamic bearing device and exert a desired bearing performance. A dynamic bearing device 1 is equipped with a bearing sleeve 8 fixed to the inner periphery of the housing 7, and a rotary member rotatable relative to the bearing sleeve 8 and the housing 7, in which the rotary member is supported in the radial direction and the thrust direction in a non-contact manner by a dynamic pressure action of a lubricant fluid generated in a bearing clearance. The housing 7 is formed by injection molding of a resin composition containing polyphenylene sulfide (PPS) as the base resin and PAN type carbon fibers as a filler.
摘要翻译： 公开了一种动态轴承装置，其允许以低成本生产较小的壳体，并且其抑制了从树脂部分的离子洗脱，从而保持动态轴承装置的清洁度并发挥期望的轴承性能。 动态轴承装置1配备有固定到壳体7的内周的轴承套筒8和可相对于轴承套筒8和壳体7旋转的旋转构件，旋转构件沿径向方向被支撑， 通过在轴承间隙中产生的润滑剂流体的动态压力作用以非接触方式推动推力方向。 外壳7通过以聚苯硫醚（PPS）为基础树脂和PAN型碳纤维作为填料的树脂组合物的注射成型而形成。
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公开(公告)号：US06513986B2
公开(公告)日：2003-02-04
申请号：US09741432
申请日：2000-12-21
申请人： Kenji Ito , Masaki Egami
发明人： Kenji Ito , Masaki Egami
IPC分类号： F16C1926
CPC分类号： F16C35/067 , F16C19/26 , F16C19/52 , F16C33/62 , F16C35/077 , F16C2202/30 , F16C2380/26
摘要： An electrical pittingproof rolling bearing having an insulating film is provided which is not creep-deformed under a bearing load even if used for a long time at high temperature and in which the bearing interference is stable with time under such severe use conditions. An insulating film formed on the surface of a bearing ring comprises a resin having a compression permanent strain of 2% or less under heating/pressurizing conditions in which a pressure of 20 MPa is applied for 24 hours at 120° C. Also, the insulating film is formed from a resin composition containing 30-80 vol % of a polyphenylene sulfide resin and 5-65 vol % of a polyamide-imide resin, and 5-50 vol % of insulating inorganic materials. Preferably, the insulating film is formed to cover at least one of the outer peripheral surface of the outer ring and the inner peripheral surface of the inner ring, and the side faces of at least one of the inner and outer rings.
摘要翻译： 提供一种具有绝缘膜的防电击滚动轴承，即使在高温下长时间使用并且在这种严苛的使用条件下轴承干扰随时间而稳定，也不会在轴承负载下蠕变变形。 形成在轴承座表面上的绝缘膜包括在加热/加压条件下具有2％或更小的压缩永久变形的树脂，其中在120℃下施加20MPa的压力24小时。另外，绝缘 膜由含有30〜80体积％的聚苯硫醚树脂和5-65体积％的聚酰胺 - 酰亚胺树脂和5-50体积％的绝缘无机材料的树脂组合物形成。 优选地，绝缘膜形成为覆盖外圈的外周面和内圈的内周面以及内圈和外圈中的至少一个的侧面中的至少一个。
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公开(公告)号：US20090046960A1
公开(公告)日：2009-02-19
申请号：US12281431
申请日：2007-02-16
申请人： Kenji Hibi , Kenji Ito , Yasuhiro Yamamoto , Hiroshi Niwa , Isao Komori , Tetsuya Yamamoto
发明人： Kenji Hibi , Kenji Ito , Yasuhiro Yamamoto , Hiroshi Niwa , Isao Komori , Tetsuya Yamamoto
CPC分类号： H02K7/085 , F16C17/02 , F16C17/102 , F16C17/107 , F16C33/14 , F16C2220/82 , F16C2223/12 , F16C2223/14 , F16C2223/70 , F16C2226/14 , F16C2370/12
摘要： A fluid dynamic bearing device which can exhibit high bearing performance is provided at low costs by forming a highly accurate bearing gap.At least a region in the outer circumferential surface of a shaft 2 which faces the radial bearing gap is constituted of an electroformed part 11, and the region of the shaft 2 excluding the electroformed part 11 is constituted of a resin portion 12.
摘要翻译： 通过形成高度精确的轴承间隙，可以以低成本提供可显示高轴承性能的流体动力轴承装置。 轴2的面向径向轴承间隙的外周面的至少一个区域由电铸部11构成，除了电铸部11以外的轴2的区域由树脂部12构成。
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公开(公告)号：US08113715B2
公开(公告)日：2012-02-14
申请号：US12294485
申请日：2007-02-02
申请人： Kenji Ito , Isao Komori
发明人： Kenji Ito , Isao Komori
IPC分类号： F16C32/06
CPC分类号： F16C17/107 , F16C33/107 , F16C2370/12
摘要： In this type of fluid dynamic bearing device, a dynamic pressure generating part having high molding accuracy is formed at low cost.A rotating member 2 includes a shaft part 9, and a holding member 10 as a thrust member provided in one end of the shaft part 9. In a partial annular region of a lower end surface 10a1 of a disk part 10a making up the holding member 10, a region where a plurality of dynamic pressure grooves 10a2 and a plurality of sectioning parts 10a3 formed between the plurality of dynamic pressure grooves 10a2 to section the respective dynamic pressure grooves 10a2 are arrayed spirally is formed. The above-described dynamic-pressure-groove 10a2 arrayed region is opposed to an upper end surface 8a of a housing part 8, and forms a thrust bearing clearance of a thrust bearing part T between the dynamic-pressure-groove 10a2 and the upper end surface 8a during the rotation of the shaft part 9. The above-described dynamic-pressure-groove 10a2 arrayed region is molded in the lower end surface 10a1 of the holding member 10 by press working.
摘要翻译： 在这种类型的流体动力轴承装置中，以低成本形成具有高成型精度的动压产生部件。 旋转构件2包括轴部9和设置在轴部9的一端的推力构件的保持构件10.在构成保持构件的盘部10a的下端面10a1的部分环状区域 如图10所示，形成有多个动压槽10a2和形成在多个动压槽10a2之间的多个切断部10a3，以使各个动压槽10a2分段的区域螺旋地排列。 上述动压槽10a2排列区域与壳体部8的上端面8a相对，并且在动压槽10a2与上端部之间形成推力轴承部T的推力轴承间隙 表面8a在轴部9的旋转期间。上述动压槽10a2排列区域通过冲压加工模制在保持构件10的下端面10a1中。
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公开(公告)号：US20090092347A1
公开(公告)日：2009-04-09
申请号：US12282057
申请日：2007-02-28
申请人： Kenji Ito , Yoshiharu Inazuka , Isao Komori , Masaharu Hori , Masaaki Toda
发明人： Kenji Ito , Yoshiharu Inazuka , Isao Komori , Masaharu Hori , Masaaki Toda
IPC分类号： F16C32/06
CPC分类号： F16C17/107 , F16C17/026 , F16C17/045 , F16C33/107
摘要： A fluid dynamic bearing device capable of exercising high bearing performance is provided at low cost.A housing 7 is injection molded with a bearing sleeve 8 as an insert. Accordingly, the molding of the housing 7 and the assembly of the housing 7 and the bearing sleeve 8 can be performed in a single step. In addition to this, by simply increasing the die precisions the housing 7 and the bearing sleeve 8 can be fixed easily with high precision. Since the housing 7 is opened at both ends, it is possible to sandwich the bearing sleeve 8, and accordingly, the bearing sleeve 8 can be accurately positioned inside the dies with reliability.
摘要翻译： 以低成本提供能够承受高轴承性能的流体动力轴承装置。 外壳7被注塑成型，轴承套8作为插入件。 因此，壳体7的模制和壳体7和轴承套筒8的组件可以在一个步骤中执行。 除此之外，通过简单地增加模具精度，可以高精度地容易地固定壳体7和轴承套筒8。 由于壳体7在两端开口，因此能够夹持轴承套筒8，因此可以可靠地将轴承套筒8精确地定位在模具内。
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