公开(公告)号：US20060261696A1

公开(公告)日：2006-11-23

申请号：US11496525

申请日：2006-08-01

申请人： Teruyuki Yajima ,  Mitsuo Kodama

发明人： Teruyuki Yajima ,  Mitsuo Kodama

IPC分类号： H02K7/00 ,  H02K21/12 ,  H02K1/00

CPC分类号： H02K1/2786 ,  H02K7/14 ,  H02K21/22

摘要： A cored motor includes a rotor (21), having a rotor hub (2), a shaft (1) fixed to the rotor hub (2), a rotor yoke (5) in ring shape and a ring magnet (6) fixed to an inner circumferential surface of the rotor yoke (5). A stator (3) has a motor base (13) and a stator core (14) and a sleeve (9) in cylindrical shape fixed to the motor base (13) respectively. A surface of the rotor hub (2) in the motor base side is provided with a recessed portion (23) having an annular shape and a raised portion (24) that protrudes continuously or intermittently in an annular shape. The rotor yoke (5) is fixed to the recessed portion (23) and the ring magnet (6) contacts the raised portion (24) and fixed to the rotor yoke (5). Respective center lines of the rotor yoke (5), the ring magnet (6) and the stator core (14) are aligned in a longitudinal direction along the shaft (1) and are made approximately coincidental with each other.

公开(公告)号：US07345393B2

公开(公告)日：2008-03-18

申请号：US11496525

申请日：2006-08-01

申请人： Teruyuki Yajima ,  Mitsuo Kodama

发明人： Teruyuki Yajima ,  Mitsuo Kodama

IPC分类号： H02K21/12

CPC分类号： H02K1/2786 ,  H02K7/14 ,  H02K21/22

摘要： A cored motor includes a rotor (21), having a rotor hub (2), a shaft (1) fixed to the rotor hub (2), a rotor yoke (5) in ring shape and a ring magnet (6) fixed to an inner circumferential surface of the rotor yoke (5). A stator (3) has a motor base (13) and a stator core (14) and a sleeve (9) in cylindrical shape fixed to the motor base (13) respectively. A surface of the rotor hub (2) in the motor base side is provided with a recessed portion (23) having an annular shape and a raised portion (24) that protrudes continuously or intermittently in an annular shape. The rotor yoke (5) is fixed to the recessed portion (23) and the ring magnet (6) contacts the raised portion (24) and fixed to the rotor yoke (5). Respective center lines of the rotor yoke (5), the ring magnet (6) and the stator core (14) are aligned in a longitudinal direction along the shaft (1) and are made approximately coincidental with each other.

摘要翻译： 一种包芯电动机包括转子（21），其具有转子毂（2），固定到转子毂（2）的轴（1），环形的转子轭（5）和固定到 转子轭（5）的内周面。 定子（3）具有分别固定在电动机底座（13）上的电动机底座（13）和定子铁心（14）和圆柱形的套管（9）。 电动机基座侧的转子轮毂（2）的表面设置有环状的凹部（23）和环状连续地或间歇地突出的凸部（24）。 转子轭（5）固定在凹部（23）上，环形磁铁（6）与凸部（24）接触并固定在转子轭（5）上。 转子轭铁（5），环形磁铁（6）和定子铁心（14）的各中心线沿着轴（1）在纵向方向上对准，并且彼此大致相互重合。

公开(公告)号：US20050264121A1

公开(公告)日：2005-12-01

申请号：US11062484

申请日：2005-02-23

申请人： Teruyuki Yajima ,  Mitsuo Kodama

发明人： Teruyuki Yajima ,  Mitsuo Kodama

IPC分类号： H02K1/22 ,  H02K1/27 ,  H02K7/00 ,  H02K7/14 ,  H02K21/22 ,  H02K29/00

CPC分类号： H02K1/2786 ,  H02K7/14 ,  H02K21/22

摘要： A cored motor is composed of a rotor (21), which is composed of a rotor hub (2), a shaft (1) fixed to the rotor hub (2), a rotor yoke (5) in ring shape and a ring magnet (6) fixed to an inner circumferential surface of the rotor yoke (5), and a stator (3), which is composed of a motor base (13) and a stator core (14) and a sleeve (9) in cylindrical shape fixed to the motor base (13) respectively. A surface of the rotor hub (2) in the motor base side is provided with a recessed portion (23) in annular shape and a raised portion (24) that is protruded continuously or intermittently in annular shape. The rotor yoke (5) is fixed to the recessed portion (23) and the ring magnet (6) is contacted with the raised portion (24) and fixed to the rotor yoke (5). Respective center lines of the rotor yoke (5), the ring magnet (6) and the stator core (14) in a longitudinal direction along the shaft (1) are made approximately coincide with each other.

摘要翻译： 芯电动机由转子毂（2），固定于转子毂（2）的轴（1），环状转子轭（5）和环形磁铁 （6），固定在转子轭（5）的内周面上，定子（3）由电动机基座（13）和定子铁心（14）构成，套筒（9）为圆筒状 分别固定在电机底座（13）上。 电动机基座侧的转子轮毂（2）的表面设置有环状的凹部（23）和环状连续地或间歇地突出的凸部（24）。 转子磁轭（5）固定在凹部（23）上，环形磁铁（6）与凸起部分（24）接触并固定在转子磁轭（5）上。 转子轭（5），环形磁铁（6）和定子铁芯（14）沿着轴（1）的纵向方向的各个中心线彼此大致重合。

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：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：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。

公开(公告)号：US08807836B2

公开(公告)日：2014-08-19

申请号：US13488865

申请日：2012-06-05

申请人： Mitsuo Kodama ,  Taketo Nonaka ,  Masafumi Mizuno

发明人： Mitsuo Kodama ,  Taketo Nonaka ,  Masafumi Mizuno

IPC分类号： F16C21/00 ,  F16C32/06

CPC分类号： F16C32/0659 ,  F16C17/107 ,  F16C33/107 ,  F16C33/745 ,  F16C2370/12

摘要： A rotating device includes a shaft body having a shaft, a first flange extending in the radial direction from the side face of the shaft, and a second flange extending outwardly of the radial direction from another end side, a freely rotatable bearing body including a shaft encircling member present between the second flange and the first flange in the axial direction, a radial dynamic pressure generating groove provided in either one of the shaft and the shaft encircling member, a first thrust dynamic pressure generating groove provided in either one of the first flange and the shaft encircling member, and a lubrication medium. An end of the region where the radial dynamic pressure generating groove is formed and which is distant from the second flange is located outwardly of the region where the first thrust dynamic pressure generating groove is disposed in the axial direction.

摘要翻译： 旋转装置包括轴体，其具有轴，从轴的侧面沿径向延伸的第一凸缘和从另一端侧向径向外延伸的第二凸缘，包括轴的自由旋转的轴承体 在轴向上存在于第二凸缘和第一凸缘之间的环绕构件，设置在轴和轴环绕构件中的任一个中的径向动压产生槽，设置在第一凸缘中的任一个中的第一推力动压生成槽 和轴环绕构件，以及润滑介质。 形成径向动压产生槽并且远离第二凸缘的区域的一端位于第一推力动压生成槽沿轴向设置的区域的外侧。

公开(公告)号：US08757883B2

公开(公告)日：2014-06-24

申请号：US12852425

申请日：2010-08-06

申请人： Mitsuo Kodama

发明人： Mitsuo Kodama

IPC分类号： F16C32/06

CPC分类号： G11B19/2036 ,  F16C17/026 ,  F16C17/107 ,  F16C33/107 ,  F16C2240/30 ,  F16C2240/34 ,  F16C2240/40 ,  F16C2370/12

摘要： In a disk drive device according to an embodiment, radial dynamic pressure corresponding portions are structured such that the diameters thereof expand toward the axial outside of the sleeve, and that the shaft is in surface-contact with each of the radial dynamic pressure corresponding portions when the rotational drive of the disk drive device is stopped. Further, a herringbone-shaped radial dynamic pressure groove is formed in each of the radial dynamic pressure corresponding portions. The radial dynamic pressure groove in each radial dynamic pressure corresponding portion is formed such that the axial outside length from the turned-back portion of the herringbone-shape is longer than the axial inside length therefrom.

摘要翻译： 在根据实施例的磁盘驱动装置中，径向动压对应部分被构造成使得其直径朝向套筒的轴向外侧扩展，并且轴与每个径向动态压力对应部分表面接触， 磁盘驱动装置的旋转驱动停止。 此外，在每个径向动压对应部分中形成人字形的径向动压槽。 每个径向动压对应部分中的径向动压槽形成为使得从人字形的折回部分的轴向外部长度比其轴向内部长度长。

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：US08451558B2

公开(公告)日：2013-05-28

申请号：US13079963

申请日：2011-04-05

申请人： Takanori Watanabe ,  Mitsuo Kodama ,  Hiroshi Iwai ,  Akira Nishio

发明人： Takanori Watanabe ,  Mitsuo Kodama ,  Hiroshi Iwai ,  Akira Nishio

IPC分类号： G11B17/02 ,  H02K1/14

CPC分类号： H02K3/28 ,  G11B17/0287 ,  G11B19/2009 ,  G11B25/043 ,  H02K3/18 ,  H02K5/1675 ,  H02K21/22

摘要： A disk drive device includes: a base member; a hub on which a recording disk is placed; a bearing unit arranged on the base member for rotatably supporting the hub; and a spindle drive unit for rotationally driving the hub, wherein the spindle drive unit includes a stator core having salient poles, a coil wound around each of the salient poles, and a magnet having a plurality of magnetic poles arranged in a circumferential direction opposed to the salient poles, the hub includes an outer cylindrical portion formed of a magnetic material and engaged with an inner periphery of the recording disk, and an inner cylindrical portion fixing an outer periphery of the magnet, the number of magnetic poles is an even number in a range of 10 to 16, and the number of salient poles is a multiple of 3 in a range of 12 to 24.

摘要翻译： 磁盘驱动装置包括：基座部件; 记录盘放置在其上的集线器; 轴承单元，布置在所述基座构件上，用于可旋转地支撑所述轮毂; 以及用于旋转驱动轮毂的主轴驱动单元，其中所述主轴驱动单元包括具有凸极的定子芯，缠绕在每个所述凸极上的线圈，以及具有沿与所述凸极相对的圆周方向布置的多个磁极的磁体 凸极包括由磁性材料形成并与记录盘的内周接合的外圆柱形部分和固定磁铁外周的内圆柱形部分，磁极数量为偶数 范围为10〜16，凸极数为12〜24的3的倍数。