公开(公告)号：US07745968B2

公开(公告)日：2010-06-29

申请号：US11896944

申请日：2007-09-06

申请人： Mitsuo Kodama ,  Takuji Yamada ,  Matomo Nagaoka

发明人： Mitsuo Kodama ,  Takuji Yamada ,  Matomo Nagaoka

IPC分类号： H02K7/08

CPC分类号： H02K7/085 ,  F16C17/026 ,  F16C17/10 ,  F16C33/107 ,  F16C2370/12 ,  G11B19/2036

摘要： A motor includes a sleeve, a sleeve holder, a rotor hub and an inner body. The sleeve has a flange portion on an outer circumference portion thereof. The sleeve holder holds the sleeve. The rotor hub has an annular wall portion. The inner body is fixed in an inside of the annular wall portion so as to surround the sleeve and the sleeve holder. The inner body has an annular protrusion portion which is sandwiched between the flange portion and one end portion of the sleeve holder on an inner circumference portion of thereof. A first thrust bearing portion in which a lubrication agent is filled is formed between the annular protrusion portion and the flange portion. A second thrust bearing portion in which the lubrication agent is filled is formed between the annular protrusion portion and the one end portion of the sleeve holder.

摘要翻译： 马达包括套筒，套筒保持器，转子毂和内体。 套筒的外周部具有凸缘部。 套筒保持套筒。 转子毂具有环形壁部分。 内部本体固定在环形壁部分的内部，以便围绕套筒和套筒保持器。 内体具有环状突起部，该环状突起部夹在凸缘部和套筒保持件的内周部的一端部之间。 在环形突起部和凸缘部之间形成有填充有润滑剂的第一止推轴承部。 其中填充润滑剂的第二止推轴承部分形成在环形突起部分和套​​筒保持器的一个端部之间。

公开(公告)号：US20080061646A1

公开(公告)日：2008-03-13

申请号：US11896944

申请日：2007-09-06

申请人： Mitsuo Kodama ,  Takuji Yamada ,  Matomo Nagaoka

发明人： Mitsuo Kodama ,  Takuji Yamada ,  Matomo Nagaoka

IPC分类号： H02K7/08

CPC分类号： H02K7/085 ,  F16C17/026 ,  F16C17/10 ,  F16C33/107 ,  F16C2370/12 ,  G11B19/2036

摘要： A motor includes a sleeve, a sleeve holder, a rotor hub and an inner body. The sleeve has a flange portion on an outer circumference portion thereof. The sleeve holder holds the sleeve. The rotor hub has an annular wall portion. The inner body is fixed in an inside of the annular wall portion so as to surround the sleeve and the sleeve holder. The inner body has an annular protrusion portion which is sandwiched between the flange portion and one end portion of the sleeve holder on an inner circumference portion of thereof. A first thrust bearing portion in which a lubrication agent is filled is formed between the annular protrusion portion and the flange portion. A second thrust bearing portion in which the lubrication agent is filled is formed between the annular protrusion portion and the one end portion of the sleeve holder.

摘要翻译： 马达包括套筒，套筒保持器，转子毂和内体。 套筒的外周部具有凸缘部。 套筒保持套筒。 转子毂具有环形壁部分。 内部本体固定在环形壁部分的内部，以便围绕套筒和套筒保持器。 内体具有环状突起部，该环状突起部夹在凸缘部和套筒保持件的内周部的一端部之间。 在环形突起部和凸缘部之间形成有填充有润滑剂的第一止推轴承部。 其中填充润滑剂的第二止推轴承部分形成在环形突起部分和套​​筒保持器的一个端部之间。

公开(公告)号：US20110033143A1

公开(公告)日：2011-02-10

申请号：US12838375

申请日：2010-07-16

申请人： Takuji Yamada ,  Mitsuo Kodama

发明人： Takuji Yamada ,  Mitsuo Kodama

IPC分类号： F16C32/06 ,  G11B25/00

CPC分类号： G11B19/2036 ,  F16C17/045 ,  F16C17/107 ,  F16C33/107 ,  F16C2370/12

摘要： A disk drive device includes a rotating body, a fluid dynamic bearing unit that rotatably supports the rotating body, and a drive unit. The fluid dynamic bearing unit has: a lubricant holding portion in which lubricant is held; a first thrust dynamic pressure groove with which a first thrust dynamic pressure generating portion for generating the dynamic pressure in the pump-in direction, which is oriented toward the inside of the lubricant holding portion, is structured; and a second thrust dynamic pressure groove with which a second thrust dynamic pressure generating portion for generating at least the dynamic pressure in the pump-out direction, is structured. The first thrust dynamic pressure generating portion and the second thrust dynamic pressure generating portion have dynamic pressure generation characteristics in which, when the rotating body is biased in the rotational axis direction from the state where the rotating body is floating in the lubricant, the sum of the changes in the dynamic pressure in the pump-out direction is larger than that of the changes in the dynamic pressure in the pump-in direction.

摘要翻译： 磁盘驱动装置包括旋转体，可旋转地支撑旋转体的流体动力轴承单元和驱动单元。 流体动力轴承单元具有：保持润滑剂的润滑剂保持部; 第一推力动压槽，其构造有用于产生朝向润滑剂保持部的内侧的朝向内的动力的第一推力动压产生部; 以及第二推力动压槽，构成用于产生至少所述排出方向的动压的第二推力动压产生部。 第一推力动压发生部和第二推力动压发生部具有动压产生特性，其中当旋转体从旋转体浮在润滑剂中的状态沿旋转轴线方向偏置时， 泵出方向的动压变化大于泵入方向动压的变化。

公开(公告)号：US08506168B2

公开(公告)日：2013-08-13

申请号：US12838375

申请日：2010-07-16

申请人： Takuji Yamada ,  Mitsuo Kodama

发明人： Takuji Yamada ,  Mitsuo Kodama

IPC分类号： F16C32/06 ,  H02K5/16

CPC分类号： G11B19/2036 ,  F16C17/045 ,  F16C17/107 ,  F16C33/107 ,  F16C2370/12

摘要： A disk drive device includes a rotating body, a fluid dynamic bearing unit that rotatably supports the rotating body, and a drive unit. The fluid dynamic bearing unit has: a lubricant holding portion in which lubricant is held; a first thrust dynamic pressure groove with which a first thrust dynamic pressure generating portion for generating the dynamic pressure in the pump-in direction, which is oriented toward the inside of the lubricant holding portion, is structured; and a second thrust dynamic pressure groove with which a second thrust dynamic pressure generating portion for generating at least the dynamic pressure in the pump-out direction, is structured. The first thrust dynamic pressure generating portion and the second thrust dynamic pressure generating portion have dynamic pressure generation characteristics in which, when the rotating body is biased in the rotational axis direction from the state where the rotating body is floating in the lubricant, the sum of the changes in the dynamic pressure in the pump-out direction is larger than that of the changes in the dynamic pressure in the pump-in direction.

摘要翻译： 磁盘驱动装置包括旋转体，可旋转地支撑旋转体的流体动力轴承单元和驱动单元。 流体动力轴承单元具有：保持润滑剂的润滑剂保持部; 第一推力动压槽，其构造有用于产生朝向润滑剂保持部的内侧的朝向内的动力的第一推力动压产生部; 以及第二推力动压槽，构成用于产生至少所述排出方向的动压的第二推力动压产生部。 第一推力动压发生部和第二推力动压发生部具有动压产生特性，其中当旋转体从旋转体浮在润滑剂中的状态沿旋转轴线方向偏置时， 泵出方向的动压变化大于泵入方向动压的变化。

公开(公告)号：US08665556B2

公开(公告)日：2014-03-04

申请号：US13850191

申请日：2013-03-25

申请人： Takuji Yamada ,  Yuji Omura ,  Mitsuo Kodama

发明人： Takuji Yamada ,  Yuji Omura ,  Mitsuo Kodama

IPC分类号： G11B17/02 ,  F16C32/06

CPC分类号： G11B33/02 ,  F16C17/107 ,  F16C33/107 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2036 ,  H02K5/1675

摘要： A sleeve supports a shaft. A housing member is arranged so as to surround the sleeve and make the end of the sleeve protrude. A base member holds the housing member and fixes a stator core so as to surround the housing member. A hub drives a recording disk by being rotated integrally with the shaft, with a magnet being fixed to an annular portion concentric with the shaft so as to face the stator core fixed to the base member. A thrust member is rotated integrally with the hub, and a descender portion and a ring portion.

摘要翻译： 套筒支撑轴。 壳体构件被布置成围绕套筒并使套筒的端部突出。 基座构件保持壳体构件并固定定子芯以围绕壳体构件。 轮毂通过与轴一体地旋转而驱动记录盘，其中磁体被固定到与轴同心的环形部分，以面对固定到基座构件的定子芯。 推力构件与毂一体旋转，下降部分和环部分。

公开(公告)号：US08243383B2

公开(公告)日：2012-08-14

申请号：US12576179

申请日：2009-10-08

申请人： Takuji Yamada ,  Yuji Omura ,  Mitsuo Kodama

发明人： Takuji Yamada ,  Yuji Omura ,  Mitsuo Kodama

IPC分类号： G11B17/02 ,  F16C32/06

CPC分类号： G11B33/02 ,  F16C17/107 ,  F16C33/107 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2036 ,  H02K5/1675

摘要： A sleeve supports a shaft. A housing member is arranged so as to surround the sleeve and make the end of the sleeve protrude. A base member holds the housing member and fixes a stator core so as to surround the housing member. A hub drives a recording disk by being rotated integrally with the shaft, with a magnet being fixed to an annular portion concentric with the shaft so as to face the stator core fixed to the base member. A thrust member is rotated integrally with the hub, and a descender portion and a ring portion.

摘要翻译： 套筒支撑轴。 壳体构件被布置成围绕套筒并使套筒的端部突出。 基座构件保持壳体构件并固定定子芯以围绕壳体构件。 轮毂通过与轴一体地旋转而驱动记录盘，其中磁体被固定到与轴同心的环形部分，以面对固定到基座构件的定子芯。 推力构件与毂一体旋转，下降部分和环部分。

公开(公告)号：US08427778B2

公开(公告)日：2013-04-23

申请号：US13530344

申请日：2012-06-22

申请人： Takuji Yamada ,  Yuji Omura ,  Mitsuo Kodama

发明人： Takuji Yamada ,  Yuji Omura ,  Mitsuo Kodama

IPC分类号： G11B17/02 ,  F16C32/06

CPC分类号： G11B33/02 ,  F16C17/107 ,  F16C33/107 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2036 ,  H02K5/1675

摘要： A sleeve supports a shaft. A housing member is arranged so as to surround the sleeve and make the end of the sleeve protrude. A base member holds the housing member and fixes a stator core so as to surround the housing member. A hub drives a recording disk by being rotated integrally with the shaft, with a magnet being fixed to an annular portion concentric with the shaft so as to face the stator core fixed to the base member. A thrust member is rotated integrally with the hub, and a descender portion and a ring portion.

摘要翻译： 套筒支撑轴。 壳体构件被布置成围绕套筒并使套筒的端部突出。 基座构件保持壳体构件并固定定子芯以围绕壳体构件。 轮毂通过与轴一体地旋转而驱动记录盘，其中磁体被固定到与轴同心的环形部分，以面对固定到基座构件的定子芯。 推力构件与毂一体旋转，下降部分和环部分。

公开(公告)号：US20130215531A1

公开(公告)日：2013-08-22

申请号：US13850191

申请日：2013-03-25

申请人： Takuji Yamada ,  Yuji Omura ,  Mitsuo Kodama

发明人： Takuji Yamada ,  Yuji Omura ,  Mitsuo Kodama

IPC分类号： G11B33/02

CPC分类号： G11B33/02 ,  F16C17/107 ,  F16C33/107 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2036 ,  H02K5/1675

摘要： A sleeve supports a shaft. A housing member is arranged so as to surround the sleeve and make the end of the sleeve protrude. A base member holds the housing member and fixes a stator core so as to surround the housing member. A hub drives a recording disk by being rotated integrally with the shaft, with a magnet being fixed to an annular portion concentric with the shaft so as to face the stator core fixed to the base member. A thrust member is rotated integrally with the hub, and a descender portion and a ring portion.

摘要翻译： 套筒支撑轴。 壳体构件被布置成围绕套筒并使套筒的端部突出。 基座构件保持壳体构件并固定定子芯以围绕壳体构件。 轮毂通过与轴一体地旋转而驱动记录盘，其中磁体被固定到与轴同心的环形部分，以面对固定到基座构件的定子芯。 推力构件与毂一体旋转，下降部分和环部分。

公开(公告)号：US07901138B2

公开(公告)日：2011-03-08

申请号：US11525020

申请日：2006-09-22

申请人： Mitsuo Kodama ,  Taketo Nonaka

发明人： Mitsuo Kodama ,  Taketo Nonaka

IPC分类号： F16C32/06

CPC分类号： F16C33/745 ,  F16C17/107 ,  F16C2370/12

摘要： A fluid bearing device (50B, 50AB) is composed of a shaft (1, 51); a sleeve (9, 59) into which the shaft (1, 51) is inserted; and lubrication fluid (20) intervening in a gap between the shaft (1, 51) and the sleeve (9, 59), the fluid bearing device (50B, 50AB) supporting the shaft (1, 51) so as to be relatively rotatable freely with respect to the sleeve (9, 59), wherein an end portion of the sleeve (9, 59) is provided with a taper ring (4, 54) in annular shape, wherein at least either one of an inner circumferential surface (4a, 54a) of the taper ring (4, 54) and an outer circumferential surface (1a, 91b) of the shaft (1, 51) facing towards the inner circumferential surface (4a, 54a) of the taper ring (4, 54) is formed into a tapered surface (4a, 54a), which inclines in a direction as a gap between the inner circumferential surface (4a, 54a) of the taper ring (4, 54) and the outer circumferential surface (1a, 91b) of the shaft (1, 51) widens in accordance with leaving from the sleeve (9, 59) and forms a taper seal section (50TS, 50ATS) that prevents the lubrication fluid (20) from leaking out, and wherein the taper ring (4, 54) is formed by a material having coefficient of thermal expansion larger than that of the sleeve (9, 59) and the shaft (1, 51).

摘要翻译： 流体轴承装置（50B，50AB）由轴（1,51）构成。 套筒（9,59），轴（1,51）插入其中; 以及介于所述轴（1,51）和所述套筒（9,59）之间的间隙中的润滑流体（20），所述流体轴承装置（50B，50AB）支撑所述轴（1,51）以相对旋转 自由地相对于套筒（9,59），其中套筒（9,59）的端部设置有环形的锥形环（4,54），其中内圆周表面（ 锥形环（4,44）的内周面（4a，54a）和与所述锥形环（4,54）的内周面（4a，54a）相对的轴（1,51a）的外周面（1a，91b） ）形成为在锥环（4,54）的内周面（4a，54a）与外周面（1a，91b）之间的间隙的方向上倾斜的锥形面（4a，54a） 根据从套管（9,59）离开，轴（1,51）的宽度变宽，形成防止润滑流体（20）泄漏的锥形密封部分（50TS，50ATS），其中th 锥形环（4,54）由热膨胀系数大于套筒（9,59）和轴（1,51）的热膨胀系数的材料形成。

公开(公告)号：US20100146772A1

公开(公告)日：2010-06-17

申请号：US12656593

申请日：2010-02-04

申请人： Mitsuo Kodama ,  Yuji Omura

发明人： Mitsuo Kodama ,  Yuji Omura

IPC分类号： H02K15/02

CPC分类号： H02K5/1677 ,  H02K1/30 ,  Y10T29/49009 ,  Y10T29/49012 ,  Y10T29/49025 ,  Y10T29/49536

摘要： A motor adopting an improved mechanism is composed of a stator having a shaft and a rotor provided with a sleeve and a hub, wherein the shaft is inserted into the hub and the hub is fixed on an outer circumferential surface of the sleeve. The outer circumferential surface of the sleeve is provided with a first outer circumferential surface, a second outer circumferential surface and a receiving surface that links between the first and second outer circumferential surfaces. The hub is provided with a base section, a through hole and a first protruded section protruding downward from the base section. A tip end portion of the first protruded section is provided with a hitting surface that contacts with the receiving surface of the sleeve and a second protruded section that links to the contacting surface and protrudes downward from the contacting surface.

摘要翻译： 采用改进机构的电动机由具有轴的定子和设置有套筒和毂的转子组成，其中轴插入到轮毂中，并且轮毂固定在套筒的外周面上。 套筒的外圆周表面设置有第一外圆周表面，第二外圆周表面和连接在第一和第二外圆周表面之间的接收表面。 毂设置有基部，通孔和从基部向下突出的第一突出部。 第一突出部的前端部设置有与套筒的接收面接触的击球面和与接触面相连并从接触面向下方突出的第二突出部。