公开(公告)号：US06614139B2

公开(公告)日：2003-09-02

申请号：US09919370

申请日：2001-07-30

申请人： Masayoshi Saichi ,  Takehiko Yazawa

发明人： Masayoshi Saichi ,  Takehiko Yazawa

IPC分类号： H02K516

CPC分类号： F16C17/10 ,  F16C2370/12 ,  G11B19/2009 ,  H02K5/1675

摘要： A motor having a dynamic pressure bearing apparatus includes a fixed bearing member mounted to a motor frame, a rotating shaft member rotatably inserted with respect to the fixed bearing member and a lubricating fluid injected into a gap portion between the fixed bearing member and the rotating shaft member. The rotating shaft member is supported by a dynamic-pressure caused by the lubricating fluid. In addition, the motor frame is provided with a generally cylindrical bearing hold member that holds and fixes a bearing member. The bearing hold member includes a bearing contacting portion which abuts against the fixed bearing member or one part of the assembly including the fixed bearing member in an axial direction for positioning the fixed bearing member in a normal position in an axial direction.

公开(公告)号：US20070154123A1

公开(公告)日：2007-07-05

申请号：US11712610

申请日：2007-02-27

申请人： Masato Gomyo ,  Masayoshi Saichi ,  Shingo Suginobu ,  Junya Mizukami ,  Yoshitaka Murayama

发明人： Masato Gomyo ,  Masayoshi Saichi ,  Shingo Suginobu ,  Junya Mizukami ,  Yoshitaka Murayama

IPC分类号： F16C32/06

CPC分类号： G11B19/2018 ,  F16C17/026 ,  F16C17/105 ,  F16C33/107 ,  F16C33/1085 ,  F16C2370/12

摘要： A hydrodynamic bearing device comprises a shaft bush having a substantially conical inclined dynamic pressure surface around the outer circumference thereof which is relatively rotatably inserted in a bearing sleeve having a substantially conical inclined dynamic pressure surface around the inner circumference thereof. A substantially conical inclined bearing space is created in the gap between the inclined dynamic pressure surfaces of the bearing sleeve and shaft bush. Lubricant fluid is filled inside the inclined bearing space. A proper dynamic pressure generating means is formed on at least one of the inclined dynamic pressure surfaces of the shaft bush and bearing sleeve. The lubricant fluid is pressurized by the dynamic pressure generating means to generate dynamic pressure, by which the shaft bush and the bearing sleeve are relatively elevated in the radial and thrust directions so that their rotations are supported in a non-contact manner. A fluid sealing portion is provided in the inclined bearing space to prevent the lubricant fluid from leaking outside of the inclined bearing space. A fluid pressurizing means is provided between the inclined bearing space and the fluid sealing portion to pressurize the lubricant fluid in the direction to push it toward the inside of the inclined bearing space.

公开(公告)号：US07008109B2

公开(公告)日：2006-03-07

申请号：US10708105

申请日：2004-02-10

申请人： Masato Gomyo ,  Noboru Ashibe ,  Masayoshi Saichi ,  Shingo Suginobu ,  Junya Mizukami ,  Nobutaka Nagao ,  Koichi Shoda ,  Akihito Kobayashi

发明人： Masato Gomyo ,  Noboru Ashibe ,  Masayoshi Saichi ,  Shingo Suginobu ,  Junya Mizukami ,  Nobutaka Nagao ,  Koichi Shoda ,  Akihito Kobayashi

IPC分类号： F16C32/06

CPC分类号： F16C33/201 ,  F16C17/107 ,  F16C33/10 ,  F16C2370/12

摘要： A dynamic pressure bearing device includes a dynamic pressure face of a shaft member, a dynamic pressure face of a bearing member, lubricating fluid filled in a bearing space of a dynamic pressure bearing portion including a gap between the dynamic pressure faces, a dynamic pressure generation means for pressing so that the lubricating fluid generates a dynamic pressure that supports the shaft member in a non-contact manner with the bearing member and in a rotatable manner relatively to the bearing member, and a sliding surface layer having abrasion resistance provided to at least one of the dynamic pressure face of the shaft member and the dynamic pressure face of the bearing member. The sliding surface layer is made up of a resin lubricating film in which many particles of solid lubricating material is dispersed, and a maximum diameter of the particles constituting the solid lubricating material included in the sliding surface layer is smaller than a minimum gap size of the bearing space of the dynamic pressure bearing portion.

摘要翻译： 动压轴承装置包括轴构件的动压面，轴承构件的动压面，填充在包括动压面之间的间隙的动压承受部的轴承空间中的润滑流体，动压产生 用于压制的装置，使得润滑流体产生动态压力，该动态压力以与轴承构件非接触的方式相对于轴承构件以可旋转的方式产生支撑轴构件，并且具有至少提供耐磨性的滑动表面层 轴构件的动压面和轴承构件的动压面之一。 滑动面层由分散有许多固体润滑材料颗粒的树脂润滑膜构成，并且构成包含在滑动表面层中的固体润滑材料的颗粒的最大直径小于最小间隙尺寸 动压轴承部分的轴承空间。

公开(公告)号：US07201517B2

公开(公告)日：2007-04-10

申请号：US10872976

申请日：2004-06-18

申请人： Masato Gomyo ,  Masayoshi Saichi ,  Shingo Suginobu ,  Junya Mizukami ,  Yoshitaka Murayama

发明人： Masato Gomyo ,  Masayoshi Saichi ,  Shingo Suginobu ,  Junya Mizukami ,  Yoshitaka Murayama

IPC分类号： F16C32/06

CPC分类号： G11B19/2018 ,  F16C17/026 ,  F16C17/105 ,  F16C33/107 ,  F16C33/1085 ,  F16C2370/12

摘要： A hydrodynamic bearing device comprises a shaft bush having a substantially conical inclined dynamic pressure surface around the outer circumference thereof which is relatively rotatably inserted in a bearing sleeve having a substantially conical inclined dynamic pressure surface around the inner circumference thereof. A substantially conical inclined bearing space is created in the gap between the inclined dynamic pressure surfaces of the bearing sleeve and shaft bush. Lubricant fluid is filled inside the inclined bearing space. A proper dynamic pressure generating means is formed on at least one of the inclined dynamic pressure surfaces of the shaft bush and bearing sleeve. The lubricant fluid is pressurized by the dynamic pressure generating means to generate dynamic pressure, by which the shaft bush and the bearing sleeve are relatively elevated in the radial and thrust directions so that their rotations are supported in a non-contact manner. A fluid sealing portion is provided in the inclined bearing space to prevent the lubricant fluid from leaking outside of the inclined bearing space. A fluid pressurizing means is provided between the inclined bearing space and the fluid sealing portion to pressurize the lubricant fluid in the direction to push it toward the inside of the inclined bearing space.

摘要翻译： 一种流体动力轴承装置包括轴套，该轴套具有围绕其外圆周的基本圆锥形的倾斜动态压力表面，其相对可旋转地插入到具有围绕其内圆周的基本上圆锥形的倾斜动态压力表面的轴承套筒中。 在轴承套筒和轴套的倾斜动态压力表面之间的间隙中形成大致圆锥形的倾斜轴承空间。 润滑油填充在倾斜轴承空间内。 在轴衬和轴承套的至少一个倾斜动态压力表面上形成适当的动压产生装置。 润滑剂流体被动态压力产生装置加压以产生动态压力，通过该动压力，轴套和轴承套筒在径向和推力方向上相对地升高，使得它们的旋转以非接触的方式被支撑。 流体密封部设置在倾斜轴承空间中，以防止润滑剂流体泄漏到倾斜轴承空间的外部。 流体加压装置设置在倾斜支承空间和流体密封部分之间，以朝向倾斜轴承空间的内部的方向对润滑剂流体加压。

公开(公告)号：US07063463B2

公开(公告)日：2006-06-20

申请号：US10866207

申请日：2004-06-10

申请人： Masato Gomyo ,  Masayoshi Saichi ,  Shingo Suginobu

发明人： Masato Gomyo ,  Masayoshi Saichi ,  Shingo Suginobu

IPC分类号： F16C17/10 ,  B21D53/10

CPC分类号： F16C33/723 ,  F16C17/105 ,  F16C2240/30 ,  F16C2370/12 ,  Y10T29/49639

摘要： A conical hydrodynamic bearing device comprises a shaft bush having a conical inclined dynamic pressure surface around an outer circumference thereof being relatively-rotatably inserted in a bearing sleeve having a conical inclined dynamic pressure surface around an inner circumference thereof, so that a conical inclined bearing space is created in a gap between the inclined dynamic pressure surfaces of the bearing sleeve and shaft bush. A lubricant fluid is filled inside the inclined bearing space. A proper dynamic pressure generating means is formed on at least one of the inclined dynamic pressure surfaces of the shaft bush and bearing sleeve. The lubricant fluid is pressurized by the dynamic pressure generating means to generate dynamic pressure, by which the shaft bush and the bearing sleeve are relatively elevated in the radial and thrust directions so that their rotations are supported in a non-contact manner. An open angle θ1 created by a pair of generatrixes between which a plane including the center axis of the shaft bush intersects with the inclined dynamic pressure surface of the shaft bush which is set to be larger than an open angle θ2 created by a pair of generatrixes between which a plane including said center axis of the bearing sleeve intersects with the inclined dynamic pressure surface of the bearing sleeve (θ1>θ2).

摘要翻译： 锥形流体动力轴承装置包括轴套，该轴套具有围绕其外圆周的锥形倾斜动态压力表面，其相对可旋转地插入到具有围绕其内圆周的锥形倾斜动态压力表面的轴承套筒中，使得圆锥形倾斜轴承空间 形成在轴承套筒和轴套之间的倾斜动压面之间的间隙中。 润滑剂流体填充在倾斜轴承空间的内部。 在轴衬和轴承套的至少一个倾斜动态压力表面上形成适当的动压产生装置。 润滑剂流体被动态压力产生装置加压以产生动态压力，通过该动压力，轴套和轴承套筒在径向和推力方向上相对地升高，使得它们的旋转以非接触的方式被支撑。 由一对母线产生的开放角度θ1，其中包括轴套的中心轴线的平面与轴套的倾斜动态压力表面相交，该倾斜动态压力表面被设定为大于由一对产生的开放角度θ2 母线之间包括轴承套筒的所述中心轴线的平面与轴承套筒的倾斜动态压力表面（θ1>θ2）相交。

公开(公告)号：US5872682A

公开(公告)日：1999-02-16

申请号：US972697

申请日：1997-11-18

申请人： Masayoshi Saichi ,  Mitsuru Ide

发明人： Masayoshi Saichi ,  Mitsuru Ide

IPC分类号： G11B17/028 ,  G11B17/038 ,  G11B19/20

CPC分类号： G11B19/2009 ,  G11B17/038 ,  G11B17/0287

摘要： A disc drive motor comprises a fixed a fixed shaft, a ball bearing fitted on the fixed shaft, a cylindrical hub rotatably supported by the ball bearing, a clamper for fixing a disc to the hub and a cap secured to the hub so as to cover one open end of an opening portion of the hub. The cap includes an engaging element formed as part of the cap for engaging with a rotation stopper jig in order to stop rotation of the hub when clamping the discs. The engaging element includes a protruding or recessed portion of the cap. The engaging may be in the form of a polygon or, in particular, a regular polygon.

摘要翻译： 磁盘驱动电动机包括固定固定轴，安装在固定轴上的滚珠轴承，由球轴承可旋转地支撑的圆柱形轮毂，用于将盘固定到轮毂的夹持器和固定到轮毂的盖，以覆盖 轮毂的开口部分的一个开口端。 盖包括形成为盖的一部分的接合元件，用于与旋转止动器夹具接合，以便在夹持盘时停止轮毂的旋转。 接合元件包括盖的突出或凹入部分。 接合可以是多边形或特别是正多边形的形式。

公开(公告)号：US07456540B2

公开(公告)日：2008-11-25

申请号：US11955592

申请日：2007-12-13

申请人： Masato Gomyo ,  Mineo Kurita ,  Masayoshi Saichi

发明人： Masato Gomyo ,  Mineo Kurita ,  Masayoshi Saichi

IPC分类号： H02K1/00

CPC分类号： H02K1/146 ,  H02K21/16 ,  H02K21/22

摘要： In a spindle motor, a core includes a plurality of core plates, which are laminated one on another. The core is constituted by laminating two cores, that is, a first core and a second core, which are different from each other in shape of a surface facing to a rotor magnet. At least a part of a cogging torque generated at the second core can be cancelled by a cogging torque generated at the first core.

摘要翻译： 在主轴电动机中，芯部包括彼此层叠的多个芯板。 芯通过将面向转子磁体的表面的形状彼此不同的两个芯层，即第一芯体和第二芯体层叠而构成。 在第二芯处产生的齿槽转矩的至少一部分可以通过在第一芯处产生的齿槽转矩来抵消。

公开(公告)号：US07365939B2

公开(公告)日：2008-04-29

申请号：US10904113

申请日：2004-10-25

申请人： Masato Gomyo ,  Masayoshi Saichi

发明人： Masato Gomyo ,  Masayoshi Saichi

IPC分类号： G11B17/02

CPC分类号： G11B33/121 ,  F16C17/026 ,  F16C17/105 ,  F16C33/10 ,  F16C33/107 ,  F16C2370/12 ,  G11B17/022 ,  G11B25/043

摘要： An ionic liquid is utilized as the dynamic-pressure fluid charged inside a bearing space formed in the gap where an axial bushing (axial component) [21] and a bearing sleeve (bearing component) [13] oppose. Designing a dynamic-pressure bearing device is made possible virtually without having to consider such factors as how to control dynamic-pressure-fluid evaporation or how to secure electrical continuity between the axial bushing and the bearing sleeve. Owing to ionic liquids' property of not hydrolyzing, deterioration of the dynamic-pressure fluid from moisture absorption, oxidation, etc. is inhibited, yielding a dynamic-pressure bearing device with a long lifespan.

摘要翻译： 使用离子液体作为动态压力流体，该动态压力流体装载在形成于间隙中的轴承空间内，轴向衬套（轴向部件）[21]和轴承套筒（轴承部件）[13]相对。 设计动态压力轴承装置可以实际上而不必考虑诸如如何控制动态压力 - 流体蒸发或如何确保轴向衬套和轴承套之间的电连续性的因素。 由于离子液体的不水解性能，抑制动压液体的吸湿，氧化等劣化，产生寿命长的动压轴承装置。

公开(公告)号：US06397470B1

公开(公告)日：2002-06-04

申请号：US09627720

申请日：2000-07-28

申请人： Masayoshi Saichi ,  Masato Gomyo

发明人： Masayoshi Saichi ,  Masato Gomyo

IPC分类号： B21D5310

CPC分类号： F16C33/107 ,  B21D53/10 ,  F16C17/026 ,  F16C33/14 ,  H02K5/163 ,  H02K15/03 ,  H02K15/14 ,  H02K21/22 ,  Y10T29/49012 ,  Y10T29/49025 ,  Y10T29/49639 ,  Y10T29/49696

摘要： A dynamic pressure bearing apparatus has a rotatable shaft to which a hub is mounted, a disk fixed to the hub, a sleeve which supports the rotatable shaft, and a dynamic pressure bearing formed between the rotatable shaft and the sleeve. The rotatable shaft is rotatably supported by the dynamic pressure bearing. The dynamic pressure bearing apparatus is manufactured by integrating the hub and the rotatable shaft by fixing the hub and shaft to each other, processing the disk mounting surface of the hub after integration, such that relative accuracy between the rotatable shaft and the disk mounting surface can be obtained, and then assembling the rotatable shaft to the sleeve.

摘要翻译： 动态压力承载装置具有安装有轮毂的可旋转轴，固定到轮毂的盘，支撑旋转轴的套筒和形成在可旋转轴和套筒之间的动压轴承。 旋转轴由动压轴承可旋转地支撑。 动压轴承装置通过将轮毂和轴彼此固定在一起来集成轮毂和可旋转轴而制造，一体化后处理轮毂的盘安装面，使得可旋转轴和盘安装面之间的相对精度可以 然后将可旋转轴组装到套筒上。

公开(公告)号：US5572078A

公开(公告)日：1996-11-05

申请号：US530636

申请日：1995-09-20

申请人： Masayoshi Saichi ,  Toru Kumagai

发明人： Masayoshi Saichi ,  Toru Kumagai

IPC分类号： H02K5/124 ,  H02K5/173 ,  H02K5/00

CPC分类号： H02K5/124 ,  H02K5/173

摘要： A motor, such as a spindle motor, and a method for making such motor, wherein the motor has a stationary part, a rotary part mounted on the stationary part rotatably with respect thereto by a bearing and a magnetic fluid seal mechanism interposed in a radial gap between the stationary part and the rotary part is disclosed. The magnetic fluid seal; mechanism comprises a magnetic ring mounted on the stationary part, a ringlike magnet unit mounted on the rotary part and a magnetic fluid held in a gap between the ringlike magnet unit and the magnetic ring. The magnetic ring is made of a sintered metal made by baking a magnetic metal powder. At last the outer peripheral surface of the magnetic ring is preferably treated with a water-repelling treatment which includes impregnation with resin. All of the surfaces of the magnetic ring are non-cut surfaces.

摘要翻译： 诸如主轴电动机的电动机和制造这种电动机的方法，其中电动机具有静止部分，旋转部分通过轴承可旋转地安装在固定部分上，并且磁性流体密封机构插入在径向 公开了固定部分和旋转部分之间的间隙。 磁流体密封; 机构包括安装在静止部分上的磁环，安装在旋转部分上的环形磁体单元和保持在环形磁体单元与磁环之间的间隙中的磁性流体。 磁环由通过烘烤磁性金属粉末制成的烧结金属制成。 最后，磁环的外周表面优选用包括用树脂浸渍的防水处理来处理。 磁环的所有表面都是非切割表面。