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1. 发明申请

US20090297076A1 FLUID DYNAMIC BEARING DEVICE 审中-公开
标题翻译：流体动力轴承装置
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。

2. 发明授权

US08778242B2 Housing for fluid dynamic bearing device 有权
标题翻译：流体动力轴承装置外壳
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。

3. 发明申请

US20090302697A1 HOUSING FOR FLUID DYNAMIC BEARING DEVICE 审中-公开
标题翻译：流体动力轴承装置的外壳
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
IPC分类号： H02K5/167 , F16C35/00
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。

4. 发明授权

US08256962B2 Fluid dynamic bearing device 有权
标题翻译：流体动力轴承装置
公开(公告)号：US08256962B2
公开(公告)日：2012-09-04
申请号：US11910316
申请日：2006-04-17
申请人： Kenji Ito , Isao Komori , Fuminori Satoji , Fuyuki Ito , Yoshiharu Inazuka
发明人： Kenji Ito , Isao Komori , Fuminori Satoji , Fuyuki Ito , Yoshiharu Inazuka
IPC分类号： F16C32/06
CPC分类号： F16C33/107 , F16C17/107 , F16C33/745 , F16C2220/04 , H02K7/085 , H02K7/086
摘要： The present invention aims to achieve a reduction in cost for a fluid dynamic bearing device. The fluid dynamic bearing device supports a shaft member (2) radially in a non-contact fashion by a dynamic pressure action generated in a radial bearing gap between an outer peripheral surface of the shaft member (2) and an inner peripheral surface (7a) of a bearing member (7), and is composed of the shaft member (2), the bearing member (7), a cover member (8), and a seal member (9). The shaft member (2) is inserted into an inner periphery of the bearing member (7), and an opening at a lower end thereof is sealed by the cover member (8). The seal member (9) is attached to an opening at an upper end of the bearing member (7), forming a seal space (S) between itself and the outer peripheral surface of the shaft member (2). Dynamic pressure grooves (G) of radial bearing portions (R1 and R2) are formed in an inner peripheral surface (7a) of the bearing member (7) by molding.
摘要翻译：本发明旨在实现流体动力轴承装置的成本的降低。流体动力轴承装置通过在轴构件（2）的外周表面和内周表面（7a）之间的径向轴承间隙中产生的动压作用以非接触的方式径向地支撑轴构件（2）轴承部件（7），由轴部件（2），轴承部件（7），盖部件（8）和密封部件（9）构成。轴构件（2）插入到轴承构件（7）的内周，并且其下端的开口被盖构件（8）密封。密封构件（9）安装在轴承构件（7）的上端的开口处，在其与轴构件（2）的外周面之间形成密封空间（S）。径向轴承部分（R1和R2）的动态压力槽（G）通过模制形成在轴承件（7）的内周表面（7a）中。

5. 发明授权

US07448804B2 Fluid bearing device 有权
公开(公告)号：US07448804B2
公开(公告)日：2008-11-11
申请号：US11727226
申请日：2007-03-26
申请人： Fuminori Satoji , Seiji Shimizu , Kenji Ito , Isao Komori , Ryouichi Nakajima
发明人： Fuminori Satoji , Seiji Shimizu , Kenji Ito , Isao Komori , Ryouichi Nakajima
IPC分类号： F16C32/06
CPC分类号： F16C33/107 , F16C17/026 , F16C17/107 , F16C2370/12 , H02K5/1675
摘要： The preset invention aims to improve the assembly accuracy and rotation accuracy of a fluid bearing device, and to further reduce the cost thereof. A bearing sleeve is fixed on the inner periphery of a housing. An axial member is supported in a non-contact manner in a radial direction by an oil film formed in a radial bearing gap. The housing made of resin is injection molded with the use of a substrate as an insert part. On the substrate, a control circuit for controlling a polygon scanner motor is mounted.

6. 发明授权

US07399121B2 Fluid bearing device 有权
标题翻译：流体轴承装置
公开(公告)号：US07399121B2
公开(公告)日：2008-07-15
申请号：US11727227
申请日：2007-03-26
申请人： Fuminori Satoji , Seiji Shimizu , Kenji Ito , Isao Komori , Ryouichi Nakajima
发明人： Fuminori Satoji , Seiji Shimizu , Kenji Ito , Isao Komori , Ryouichi Nakajima
IPC分类号： F16C32/06
CPC分类号： F16C33/107 , F16C17/026 , F16C17/107 , F16C2370/12 , H02K5/1675
摘要： The preset invention aims to improve the assembly accuracy and rotation accuracy of a fluid bearing device, and to further reduce the cost thereof. A bearing sleeve is fixed on the inner periphery of a housing. An axial member is supported in a non-contact manner in a radial direction by an oil film formed in a radial bearing gap. The housing made of resin is injection molded with the use of a substrate as an insert part. On the substrate, a control circuit for controlling a polygon scanner motor is mounted.
摘要翻译：本发明旨在提高流体轴承装置的组装精度和旋转精度，并进一步降低成本。轴承套固定在壳体的内周上。轴向构件通过形成在径向轴承间隙中的油膜以径向方式非接触地支撑。由树脂制成的壳体通过使用基板作为插入部件进行注射成型。在基板上安装有用于控制多边形扫描仪马达的控制电路。

7. 发明授权

US07267484B2 Fluid bearing device 有权
标题翻译：流体轴承装置
公开(公告)号：US07267484B2
公开(公告)日：2007-09-11
申请号：US10843672
申请日：2004-05-12
申请人： Fuminori Satoji , Seiji Shimizu , Kenji Ito , Isao Komori , Ryouichi Nakajima
发明人： Fuminori Satoji , Seiji Shimizu , Kenji Ito , Isao Komori , Ryouichi Nakajima
IPC分类号： F16C17/10
CPC分类号： F16C33/107 , F16C17/026 , F16C17/107 , F16C2370/12 , H02K5/1675
摘要： The preset invention aims to improve the assembly accuracy and rotation accuracy of a fluid bearing device, and to further reduce the cost thereof. A bearing sleeve is fixed on the inner periphery of a housing. An axial member is supported in a non-contact manner in a radial direction by an oil film formed in a radial bearing gap. The housing made of resin is injection molded with the use of a substrate as an insert part. On the substrate, a control circuit for controlling a polygon scanner motor is mounted.
摘要翻译：本发明旨在提高流体轴承装置的组装精度和旋转精度，并进一步降低成本。轴承套固定在壳体的内周上。轴向构件通过形成在径向轴承间隙中的油膜以径向方式非接触地支撑。由树脂制成的壳体通过使用基板作为插入部件进行注射成型。在基板上安装有用于控制多边形扫描仪马达的控制电路。

8. 发明授权

US08113715B2 Fluid dynamic bearing device 有权
标题翻译：流体动力轴承装置
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。

9. 发明申请

US20090092347A1 FLUID DYNAMIC BEARING DEVICE 有权
标题翻译：流体动力轴承装置
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。

10. 发明申请

US20090022439A1 FLUID DYNAMIC BEARING DEVICE 有权
标题翻译：流体动力轴承装置
公开(公告)号：US20090022439A1
公开(公告)日：2009-01-22
申请号：US12281555
申请日：2007-02-21
申请人： Tetsuya Yamamoto , Kenji Ito , Isao Komori
发明人： Tetsuya Yamamoto , Kenji Ito , Isao Komori
IPC分类号： F16C33/20
CPC分类号： F16C33/103 , F16C17/107
摘要： A fluid dynamic bearing device having high bearing performance at low cost is provided.A bearing member 6 includes an inner diameter part 8 having a radial bearing surface and an outer diameter part 7 having a mounting surface for a bracket 5. Both the inner diameter part 8 and the outer diameter part 7 are made of a resin. The inner diameter part 8 is preferably formed of an oil-impregnated resin, and more preferably a porous resin, and the outer diameter part 7 is formed of a nonporous resin.
摘要翻译：提供了一种具有低轴承性能的流体动力轴承装置。轴承构件6包括具有径向支承表面的内径部分8和具有用于支架5的安装表面的外径部分7.内径部分8和外径部分7均由树脂制成。内径部8优选由油浸树脂形成，更优选为多孔树脂，外径部7由无孔树脂形成。

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