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公开(公告)号：US20080212908A1
公开(公告)日：2008-09-04
申请号：US11795410
申请日：2006-05-15
申请人： Natsuhiko Mori , Nobuyoshi Yamashita , Fuminori Satoji , Isao Komori , Toshiyuki Mizutani , Masafumi Okuma , Kenichi Mitani
发明人： Natsuhiko Mori , Nobuyoshi Yamashita , Fuminori Satoji , Isao Komori , Toshiyuki Mizutani , Masafumi Okuma , Kenichi Mitani
CPC分类号： F16C33/107 , F16C17/026 , F16C17/107 , F16C2370/12 , Y10T29/49025 , Y10T29/49705
摘要： It is an object of the present invention to provide a bearing member having a highly accurate dynamic pressure generating portion stably at low cost. Dynamic pressure grooves (8a1) and (8a2) are formed as the dynamic pressure generating portions on an inner circumferential surface of the electroforming portion (10) by an electroforming process, and injection molding is performed by using a resin while inserting the electroforming portion (10), thereby forming a bearing member (8). A shaft member (2) is inserted into an inner circumference of the bearing member.
摘要翻译： 本发明的目的是提供一种以低成本稳定地具有高精度的动压产生部的轴承部件。 在电铸部（10）的内周面通过电铸工序形成作为动压产生部的动压槽（8 a 1）和（8 a 2），并且通过使用树脂进行注塑成型，同时插入 电铸部（10），从而形成轴承部件（8）。 轴构件（2）插入到轴承构件的内周中。
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公开(公告)号：US08931175B2
公开(公告)日：2015-01-13
申请号：US13435915
申请日：2012-03-30
申请人： Natsuhiko Mori , Nobuyoshi Yamashita , Fuminori Satoji , Isao Komori , Toshiyuki Mizutani , Masafumi Okuma , Kenichi Mitani
发明人： Natsuhiko Mori , Nobuyoshi Yamashita , Fuminori Satoji , Isao Komori , Toshiyuki Mizutani , Masafumi Okuma , Kenichi Mitani
CPC分类号： F16C33/107 , F16C17/026 , F16C17/107 , F16C2370/12 , Y10T29/49025 , Y10T29/49705
摘要： It is an object of the present invention to provide a bearing member having a highly accurate dynamic pressure generating portion stably at low cost. Dynamic pressure grooves (8a1) and (8a2) are formed as the dynamic pressure generating portions on an inner circumferential surface of the electroforming portion (10) by an electroforming process, and injection molding is performed by using a resin while inserting the electroforming portion (10), thereby forming a bearing member (8). A shaft member (2) is inserted into an inner circumference of the bearing member.
摘要翻译： 本发明的目的是提供一种以低成本稳定地具有高精度的动压产生部的轴承部件。 在电铸部（10）的内周面通过电铸工序形成作为动压产生部的动压槽（8a1）和（8a2），并且在插入电铸部的同时使用树脂进行注塑成型 10），从而形成轴承部件（8）。 轴构件（2）插入到轴承构件的内周中。
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公开(公告)号：US20100194215A1
公开(公告)日：2010-08-05
申请号：US12754100
申请日：2010-04-05
申请人： Fuminori Satoji , Ryouichi Nakajima , Isao Komori , Kazuo Okamura , Masafumi Okuma , Kenichi Mitani
发明人： Fuminori Satoji , Ryouichi Nakajima , Isao Komori , Kazuo Okamura , Masafumi Okuma , Kenichi Mitani
CPC分类号： F16C17/107 , F16C33/107 , F16C2370/12 , H02K5/163 , H02K5/1675
摘要： Assembly precision in a motor is improved and greater cost reduction is achieved.A fluid dynamic bearing apparatus 1 comprising a housing 7 and bearing sleeve 8 as fixed-side members 2, a shaft member 9 as a rotational-side member 3 having a portion 3c for mounting a rotor magnet 5, and a disk hub 10, the shaft member 9 being supported by the bearing sleeve 8 in the radial direction in a non-contact manner by the hydrodynamic effect of a lubricating oil produced in a radial bearing gap between the inner circumferential surface 8a of the bearing sleeve 8 and the outer circumferential surface 9a of the shaft member while the shaft member 9 is in rotation, the apparatus 1 comprising a disk hub 10 which is fixed on the shaft member 9 and has a portion 3c for mounting the rotor magnet 5, and the disk hub 10 being a molded resin article formed by insert-molding using the shaft member 9 as an insert piece.
摘要翻译： 电机的组装精度得到提高，降低了成本。 一种流体动力轴承装置1，其包括壳体7和作为固定侧构件2的轴承套筒8，作为具有用于安装转子磁体5的部分3c的旋转侧构件3的轴构件9和盘毂10， 轴构件9通过在轴承套筒8的内周面8a与外周面之间的径向轴承间隙中产生的润滑油的流体动力学作用以非接触的方式在径向方向上被轴承套筒8支撑 在轴构件9旋转的同时，装置1包括固定在轴构件9上并具有用于安装转子磁体5的部分3c的盘毂10，并且盘毂10是模制的 树脂制品通过使用轴构件9作为插入件插入成型而形成。
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公开(公告)号：US08002471B2
公开(公告)日：2011-08-23
申请号：US12754100
申请日：2010-04-05
申请人： Fuminori Satoji , Ryouichi Nakajima , Isao Komori , Kazuo Okamura , Masafumi Okuma , Kenichi Mitani
发明人： Fuminori Satoji , Ryouichi Nakajima , Isao Komori , Kazuo Okamura , Masafumi Okuma , Kenichi Mitani
IPC分类号： F16C32/06
CPC分类号： F16C17/107 , F16C33/107 , F16C2370/12 , H02K5/163 , H02K5/1675
摘要： Assembly precision in a motor is improved and greater cost reduction is achieved.A fluid dynamic bearing apparatus 1 comprising a housing 7 and bearing sleeve 8 as fixed-side members 2, a shaft member 9 as a rotational-side member 3 having a portion 3c for mounting a rotor magnet 5, and a disk hub 10, the shaft member 9 being supported by the bearing sleeve 8 in the radial direction in a non-contact manner by the hydrodynamic effect of a lubricating oil produced in a radial bearing gap between the inner circumferential surface 8a of the bearing sleeve 8 and the outer circumferential surface 9a of the shaft member while the shaft member 9 is in rotation, the apparatus 1 comprising a disk hub 10 which is fixed on the shaft member 9 and has a portion 3c for mounting the rotor magnet 5, and the disk hub 10 being a molded resin article formed by insert-molding using the shaft member 9 as an insert piece.
摘要翻译： 电机的组装精度得到提高，降低了成本。 一种流体动力轴承装置1，其包括壳体7和作为固定侧构件2的轴承套筒8，作为具有用于安装转子磁体5的部分3c的旋转侧构件3的轴构件9和盘毂10， 轴构件9通过在轴承套筒8的内周面8a与外周面之间的径向轴承间隙中产生的润滑油的流体动力学作用以非接触的方式在径向方向上被轴承套筒8支撑 在轴构件9旋转的同时，装置1包括固定在轴构件9上并具有用于安装转子磁体5的部分3c的盘毂10，并且盘毂10是模制的 树脂制品通过使用轴构件9作为插入件插入成型而形成。
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公开(公告)号：US07819585B2
公开(公告)日：2010-10-26
申请号：US11587535
申请日：2005-05-16
申请人： Fuminori Satoji , Ryouichi Nakajima , Isao Komori , Kazuo Okamura , Masafumi Okuma , Kenichi Mitani
发明人： Fuminori Satoji , Ryouichi Nakajima , Isao Komori , Kazuo Okamura , Masafumi Okuma , Kenichi Mitani
IPC分类号： F16C32/06
CPC分类号： F16C17/107 , F16C33/107 , F16C2370/12 , H02K5/163 , H02K5/1675
摘要： Assembly precision in a motor is improved and greater cost reduction is achieved. A fluid dynamic bearing apparatus includes a housing and bearing sleeve as fixed-side members, a shaft member as a rotational-side member having a portion for mounting a rotor magnet, and a disk hub. The shaft member is supported by the bearing sleeve in the radial direction in a non-contact manner by the hydrodynamic effect of a lubricating oil produced in a radial bearing gap between the inner circumferential surface of the bearing sleeve and the outer circumferential surface 9 of the shaft member while the shaft member is in rotation. The apparatus includes a disk hub which is fixed on the shaft member and has a portion for mounting the rotor magnet, and the disk hub is a molded resin article formed by insert-molding using the shaft member as an insert piece.
摘要翻译： 电机的组装精度得到提高，降低了成本。 流体动力轴承装置包括作为固定侧构件的壳体和轴承套筒，具有用于安装转子磁体的部分的旋转侧构件的轴构件和盘毂。 轴构件通过在轴承套的内周面和轴承套的内周面9之间的径向轴承间隙中产生的润滑油的流体动力学效应以非接触的方式以轴向套筒的径向方式被支撑。 轴构件旋转。 该装置包括固定在轴构件上并具有用于安装转子磁体的部分的盘毂，并且盘毂是通过使用轴构件作为插入件的嵌入成型形成的模制树脂制品。
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公开(公告)号：US20070280571A1
公开(公告)日：2007-12-06
申请号：US11587535
申请日：2005-05-16
IPC分类号： F16C17/10
CPC分类号： F16C17/107 , F16C33/107 , F16C2370/12 , H02K5/163 , H02K5/1675
摘要： Assembly precision in a motor is improved and greater cost reduction is achieved. A fluid dynamic bearing apparatus 1 comprising a housing 7 and bearing sleeve 8 as fixed-side members 2, a shaft member 9 as a rotational-side member 3 having a portion 3c for mounting a rotor magnet 5, and a disk hub 10, the shaft member 9 being supported by the bearing sleeve 8 in the radial direction in a non-contact manner by the hydrodynamic effect of a lubricating oil produced in a radial bearing gap between the inner circumferential surface 8a of the bearing sleeve 8 and the outer circumferential surface 9a of the shaft member while the shaft member 9 is in rotation, the apparatus 1 comprising a disk hub 10 which is fixed on the shaft member 9 and has a portion 3c for mounting the rotor magnet 5, and the disk hub 10 being a molded resin article formed by insert-molding using the shaft member 9 as an insert piece.
摘要翻译： 电机的组装精度得到提高，降低了成本。 一种流体动力轴承装置1，包括壳体7和作为固定侧构件2的轴承套筒8，作为具有用于安装转子磁体5的部分3c的旋转侧构件3的轴构件9和盘毂10， 轴构件9通过轴承套筒8的内周面8a之间的径向轴承间隙中产生的润滑油的流体动力学效应与外部的轴向套筒8在径向方向上以非接触的方式被支撑 轴构件9旋转时的轴构件的周面9a，装置1包括固定在轴构件9上并具有用于安装转子磁体5的部分3c的盘毂10，以及盘毂 10是通过使用轴构件9作为插入件通过嵌入成型形成的模制树脂制品。
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公开(公告)号：US09200674B2
公开(公告)日：2015-12-01
申请号：US14062273
申请日：2013-10-24
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。
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公开(公告)号：US08591113B2
公开(公告)日：2013-11-26
申请号：US12997784
申请日：2009-06-11
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。
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公开(公告)号：US20110097025A1
公开(公告)日：2011-04-28
申请号：US12997784
申请日：2009-06-11
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。
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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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