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1. 发明申请

US20110097025A1 FLUID DYNAMIC BEARING DEVICE 有权
标题翻译：流体动力轴承装置
公开(公告)号：US20110097025A1
公开(公告)日：2011-04-28
申请号：US12997784
申请日：2009-06-11
申请人： Fuminori Satoji , Toshiyuki Mizutani , Tetsuya Yamamoto , Isao Komori , Tetsuya Kurimura
发明人： Fuminori Satoji , Toshiyuki Mizutani , Tetsuya Yamamoto , Isao Komori , Tetsuya Kurimura
IPC分类号： F16C32/06
CPC分类号： F16C33/723 , F16C17/107 , F16C32/0633 , F16C33/745 , F16C43/02 , F16C2370/12
摘要： In order to improve retention strength of a lid member without increase in size and reduction in bearing property of a bearing device, a fluid dynamic bearing device (1) includes: a shaft member (2); a bearing sleeve (8) which forms a radial bearing gap between the bearing sleeve and an outer peripheral surface of the shaft member (2); a housing (4) which accommodates the bearing sleeve (8) and is opened at both ends; and a lid member (10) which closes an opening on one end side of the housing (9) and forms thrust bearing portions (T1 and T2). The housing (9) is an injection-molded product into which the bearing sleeve (8) is inserted, and the housing (9) has another end with which a seal portion (9b) forming a seal space (S) is integrally formed. The lid member (10) is fitted with the outer peripheral surface of the housing (9) by loose fitting so that the lid member (10) and the housing (9) are bonded and fixed to each other.
摘要翻译：为了提高盖构件的保持强度而不增加轴承装置的尺寸和减小轴承特性，流体动力轴承装置（1）包括：轴构件（2）; 轴承套筒（8），其在所述轴承套筒和所述轴构件（2）的外周表面之间形成径向轴承间隙; 容纳所述轴承套（8）并在两端敞开的壳体（4）; 以及盖构件（10），其封闭所述壳体（9）的一端侧的开口并形成止推轴承部（T1和T2）。壳体（9）是轴承套（8）插入其中的注塑产品，并且壳体（9）具有形成密封空间（S）的密封部分（9b）的另一端。盖构件（10）通过松动配合与壳体（9）的外周面嵌合，使得盖构件（10）和壳体（9）彼此结合固定。

2. 发明授权

US09200674B2 Fluid dynamic bearing device 有权
标题翻译：流体动力轴承装置
公开(公告)号：US09200674B2
公开(公告)日：2015-12-01
申请号：US14062273
申请日：2013-10-24
申请人： Fuminori Satoji , Toshiyuki Mizutani , Tetsuya Yamamoto , Isao Komori , Tetsuya Kurimura
发明人： Fuminori Satoji , Toshiyuki Mizutani , Tetsuya Yamamoto , Isao Komori , Tetsuya Kurimura
IPC分类号： F16C32/06 , F16C33/72 , F16C17/10 , F16C43/02 , F16C33/74
CPC分类号： F16C33/723 , F16C17/107 , F16C32/0633 , F16C33/745 , F16C43/02 , F16C2370/12
摘要： A fluid dynamic bearing device (21) includes: a shaft member (22); a housing (29) as an outer member which is arranged on a radially outer side of the shaft member (22) and is opened at both ends; a radial bearing gap which is formed on a radially inner side of the housing (29) and faces an outer peripheral surface of the shaft member (22); and a lid member (30) closing an opening on one end side of the housing (29), wherein the lid member (30) is fitted to an outer peripheral surface of the housing (29) with a fastening allowance which does not affect accuracy of a surface defining an outer diameter dimension of the radial bearing gap so that the housing (29) and the lid member (30) are bonded and fixed to each other.
摘要翻译：流体动力轴承装置（21）包括：轴构件（22）; 作为外部构件的壳体（29），其布置在所述轴构件（22）的径向外侧上并且在两端开口; 径向轴承间隙，其形成在所述壳体（29）的径向内侧并且面向所述轴构件（22）的外周面; 以及盖构件（30），其封闭所述壳体（29）的一端侧的开口，其中，所述盖构件（30）以不影响精度的紧固余量装配到所述壳体（29）的外周面限定径向轴承间隙的外径尺寸的表面，使得壳体（29）和盖构件（30）彼此结合并固定。

3. 发明授权

US08591113B2 Fluid dynamic bearing device 有权
标题翻译：流体动力轴承装置
公开(公告)号：US08591113B2
公开(公告)日：2013-11-26
申请号：US12997784
申请日：2009-06-11
申请人： Fuminori Satoji , Toshiyuki Mizutani , Tetsuya Yamamoto , Isao Komori , Tetsuya Kurimura
发明人： Fuminori Satoji , Toshiyuki Mizutani , Tetsuya Yamamoto , Isao Komori , Tetsuya Kurimura
IPC分类号： F16C32/06
CPC分类号： F16C33/723 , F16C17/107 , F16C32/0633 , F16C33/745 , F16C43/02 , F16C2370/12
摘要： A fluid dynamic bearing device includes: a shaft member; a bearing sleeve which forms a radial bearing gap between the bearing sleeve and an outer peripheral surface of the shaft member; a housing which accommodates the bearing sleeve and is opened at both ends; and a lid member which closes an opening on one end side of the housing and forms thrust bearing portions. The housing is an injection-molded product into which the bearing sleeve is inserted, and the housing has another end with which a seal portion forming a seal space is integrally formed. The lid member is fitted with the outer peripheral surface of the housing by loose fitting so that the lid member and the housing are bonded and fixed to each other.
摘要翻译：流体动力轴承装置包括：轴构件; 轴承套筒，其在所述轴承套筒和所述轴构件的外周面之间形成径向轴承间隙; 容纳所述轴承套并在两端开口的壳体; 以及盖构件，其封闭壳体的一端侧的开口并形成止推轴承部。壳体是轴承套筒插入其中的注模产品，壳体具有形成密封空间的密封部分的另一端。盖部件通过松动配合装配在壳体的外周面上，使得盖部件和壳体彼此结合固定。

4. 发明授权

US08197141B2 Fluid dynamic bearing device 有权
标题翻译：流体动力轴承装置
公开(公告)号：US08197141B2
公开(公告)日：2012-06-12
申请号：US12303867
申请日：2007-03-01
申请人： Tetsuya Yamamoto , Tetsuya Kurimura
发明人： Tetsuya Yamamoto , Tetsuya Kurimura
IPC分类号： F16C32/06
CPC分类号： F16C17/107 , F16C33/107 , F16C33/74 , F16C2370/12 , G11B19/2036
摘要： A lid member (10) is formed in a cup-like shape while having a plate portion (10a) and a cylindrical fixed portion (10b) axially protruding from an outer peripheral end of the plate portion (10a). An outer peripheral surface (10b1) of the fixed portion (10b), which serves as a fixation surface (B), is fixed to an inner peripheral surface (7a) of a housing (7) as an outer member (A). An axial dimension of the fixation surface (B) is larger than a thickness of the plate portion (10a), and hence it is possible to thinly-form the plate portion (10a) and to increase a fixing force between the lid member (10) and the housing (7). As a result, an axial dimension of a fluid dynamic bearing device can be reduced and durability thereof can be simultaneously increased.
摘要翻译：盖构件（10）形成为杯状，同时具有从板部（10a）的外周端部轴向突出的板部（10a）和圆筒形固定部（10b）。作为固定面（B）的固定部（10b）的外周面（10b1）固定在外壳（A）的壳体（7）的内周面（7a）上。固定面（B）的轴向尺寸大于板部（10a）的厚度，因此可以薄板地形成板部（10a），并且增加盖部件（10）之间的固定力）和壳体（7）。结果，能够降低流体动力轴承装置的轴向尺寸，同时可以提高耐久性。

5. 发明申请

US20100239196A1 FLUID DYNAMIC BEARING DEVICE 有权
标题翻译：流体动力轴承装置
公开(公告)号：US20100239196A1
公开(公告)日：2010-09-23
申请号：US12303867
申请日：2007-03-01
申请人： Tetsuya Yamamoto , Tetsuya Kurimura
发明人： Tetsuya Yamamoto , Tetsuya Kurimura
IPC分类号： F16C32/06
CPC分类号： F16C17/107 , F16C33/107 , F16C33/74 , F16C2370/12 , G11B19/2036
摘要： A lid member (10) is formed in a cup-like shape while having a plate portion (10a) and a cylindrical fixed portion (10b) axially protruding from an outer peripheral end of the plate portion (10a). An outer peripheral surface (10b1) of the fixed portion (10b), which serves as a fixation surface (B), is fixed to an inner peripheral surface (7a) of a housing (7) as an outer member (A). An axial dimension of the fixation surface (B) is larger than a thickness of the plate portion (10a), and hence it is possible to thinly-form the plate portion (10a) and to increase a fixing force between the lid member (10) and the housing (7). As a result, an axial dimension of a fluid dynamic bearing device can be reduced and durability thereof can be simultaneously increased.
摘要翻译：盖构件（10）形成为杯状，同时具有从板部（10a）的外周端部轴向突出的板部（10a）和圆筒形固定部（10b）。作为固定面（B）的固定部（10b）的外周面（10b1）固定在外壳（A）的壳体（7）的内周面（7a）上。固定面（B）的轴向尺寸大于板部（10a）的厚度，因此可以薄板地形成板部（10a），并且增加盖部件（10）之间的固定力）和壳体（7）。结果，能够降低流体动力轴承装置的轴向尺寸，同时可以提高耐久性。

6. 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。

7. 发明授权

US08240918B2 Shaft member for fluid bearing device and method of producing the same 有权
标题翻译：流体轴承装置用轴构件及其制造方法
公开(公告)号：US08240918B2
公开(公告)日：2012-08-14
申请号：US12518298
申请日：2007-12-18
申请人： Kimihiko Bitou , Jun Hirade , Kazuto Shimizu , Tetsuya Yamamoto , Isao Komori
发明人： Kimihiko Bitou , Jun Hirade , Kazuto Shimizu , Tetsuya Yamamoto , Isao Komori
IPC分类号： F16C32/06 , B21D53/10
CPC分类号： B23P11/00 , F16C17/107 , F16C33/14 , F16C43/02 , F16C2220/40 , F16C2226/12 , F16C2370/12 , F16D1/072 , Y10T29/49636 , Y10T29/49639
摘要： A shaft portion is press-fitted to a flange portion, and a plastic working portion of a first jig is pressed against an upper end surface of the flange portion, whereby the flange portion is partially subjected to plastic deformation toward an inner peripheral side. With this, a caulked portion is formed between the flange portion and the shaft portion. Further, press-fitting and caulking are performed in a state in which both end surfaces of the flange portion are bound by a second jig and a third jig.
摘要翻译：将轴部压配合到凸缘部，将第一夹具的塑料加工部压在凸缘部的上端面上，由此凸缘部朝向内周侧部分受到塑性变形。由此，在凸缘部和轴部之间形成有铆接部。此外，在凸缘部的两个端面被第二夹具和第三夹具结合的状态下进行压配合和铆接。

8. 发明授权

US08128289B2 Fluid dynamic bearing device 有权
标题翻译：流体动力轴承装置
公开(公告)号：US08128289B2
公开(公告)日：2012-03-06
申请号：US12304837
申请日：2007-03-01
申请人： Tetsuya Yamamoto , Isao Komori , Yoshiharu Inazuka , Masaharu Hori
发明人： Tetsuya Yamamoto , Isao Komori , Yoshiharu Inazuka , Masaharu Hori
IPC分类号： F16C32/06
CPC分类号： F16C33/107 , F16C17/08 , F16C17/107 , F16C2370/12
摘要： An outer peripheral surface (8d) of a bearing sleeve (8) is formed on a radially inside with respect to a first dynamic pressure generation portion (B1). In this case, it is possible to reduce a thickness of the bearing sleeve (8) while securing a first thrust dynamic pressure generating portion (B1) which has a thrust load capacity equivalent to that in a conventional case where a thrust dynamic pressure generating portion is formed in an end surface of the bearing sleeve. Accordingly, it is possible to reduce the thickness of the bearing sleeve (8) without sacrificing a bearing performance in a thrust direction. With this structure, a total amount of a lubricating oil sealed in a bearing device can be reduced, thereby reducing a capacity of a buffering function so as to downsize a sealing portion (9), and by extension, downsizing a fluid dynamic bearing device (1).
摘要翻译：在第一动压产生部（B1）的径向内侧形成有轴承套（8）的外周面（8d）。在这种情况下，可以在确保推力载荷能力等同于推力动压产生部分（B1）的第一推力动压产生部分（B1）的同时，减小轴承套筒（8）的厚度，形成在轴承套的端面上。因此，可以在不牺牲推力方向的轴承性能的情况下减小轴承套（8）的厚度。利用这种结构，可以减少密封在轴承装置中的润滑油的总量，从而降低缓冲功能的能力，从而减小密封部分（9）的尺寸，并且通过扩展来减小流体动态轴承装置（ 1）。

9. 发明申请

US20090324149A1 FLUID DYNAMIC BEARING DEVICE 有权
标题翻译：流体动力轴承装置
公开(公告)号：US20090324149A1
公开(公告)日：2009-12-31
申请号：US12304837
申请日：2007-03-01
申请人： Tetsuya Yamamoto , Isao Komori , Yoshiharu Inazuka , Masaharu Hori
发明人： Tetsuya Yamamoto , Isao Komori , Yoshiharu Inazuka , Masaharu Hori
IPC分类号： F16C32/06
CPC分类号： F16C33/107 , F16C17/08 , F16C17/107 , F16C2370/12
摘要： An outer peripheral surface (8d) of a bearing sleeve (8) is formed on a radially inside with respect to a first dynamic pressure generation portion (B1). In this case, it is possible to reduce a thickness of the bearing sleeve (8) while securing a first thrust dynamic pressure generating portion (B1) which has a thrust load capacity equivalent to that in a conventional case where a thrust dynamic pressure generating portion is formed in an end surface of the bearing sleeve. Accordingly, it is possible to reduce the thickness of the bearing sleeve (8) without sacrificing a bearing performance in a thrust direction. With this structure, a total amount of a lubricating oil sealed in a bearing device can be reduced, thereby reducing a capacity of a buffering function so as to downsize a sealing portion (9), and by extension, downsizing a fluid dynamic bearing device (1).
摘要翻译：在第一动压产生部（B1）的径向内侧形成有轴承套（8）的外周面（8d）。在这种情况下，可以在确保推力载荷能力等同于推力动压产生部分（B1）的第一推力动压产生部分（B1）的同时，减小轴承套筒（8）的厚度，形成在轴承套的端面上。因此，可以在不牺牲推力方向的轴承性能的情况下减小轴承套（8）的厚度。利用这种结构，可以减少密封在轴承装置中的润滑油的总量，从而降低缓冲功能的能力，从而减小密封部分（9）的尺寸，并且通过扩展来减小流体动态轴承装置（ 1）。

10. 发明申请

US20100129014A1 SHAFT MEMBER FOR FLUID BEARING DEVICE AND METHOD OF PRODUCING THE SAME 有权
标题翻译：用于流体轴承装置的轴件及其制造方法
公开(公告)号：US20100129014A1
公开(公告)日：2010-05-27
申请号：US12518298
申请日：2007-12-18
申请人： Kimihiko Bitou , Jun Hirade , Kazuto Shimizu , Tetsuya Yamamoto , Isao Komori
发明人： Kimihiko Bitou , Jun Hirade , Kazuto Shimizu , Tetsuya Yamamoto , Isao Komori
IPC分类号： F16C17/10 , B21D53/10
CPC分类号： B23P11/00 , F16C17/107 , F16C33/14 , F16C43/02 , F16C2220/40 , F16C2226/12 , F16C2370/12 , F16D1/072 , Y10T29/49636 , Y10T29/49639
摘要： [Object] To manufacture at lower cost a shaft member for a fluid dynamic bearing device, which is excellent in accuracy of bearing surfaces and shape accuracy between the bearing surfaces, and which has high fixation strength between a shaft portion and a flange portion.[Solving Means] A shaft portion (21) is press-fitted to a flange portion (22), and a plastic working portion (31c) of a first jig (31) is pressed against an upper end surface (22a) of the flange portion (22), whereby the flange portion (22) is partially subjected to plastic deformation toward an inner peripheral side. With this, a caulked portion (23) is formed between the flange portion (22) and the shaft portion (21). Further, press-fitting and caulking are performed in a state in which both end surfaces (22a and 22b) of the flange portion (22) are bound by a second jig (32) and a third jig (33).
摘要翻译：为了以较低的成本制造用于流体动力轴承装置的轴构件，其轴承表面的精度和轴承表面之间的形状精度优异，并且在轴部和凸缘部之间具有高的固定强度。 [解决方案]将轴部（21）压配合到凸缘部（22），将第一夹具（31）的塑料加工部（31c）压靠在凸缘的上端面（22a）部分（22），由此凸缘部分（22）部分地朝向内周侧进行塑性变形。由此，在凸缘部（22）和轴部（21）之间形成有铆接部（23）。此外，在凸缘部（22）的两个端面（22a和22b）由第二夹具（32）和第三夹具（33）结合的状态下进行压入和铆接。

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