公开(公告)号：US07285886B2

公开(公告)日：2007-10-23

申请号：US11340460

申请日：2006-01-27

申请人： Mitsuo Kodama

发明人： Mitsuo Kodama

IPC分类号： H02K5/16

CPC分类号： F16C33/107 ,  F16C17/045 ,  F16C17/10 ,  F16C2370/12 ,  H02K7/085

摘要： One preferred embodiment of the present invention provides a motor composed at least of a stator, a rotor, and a dynamic pressure bearing having a thrust dynamic pressure bearing portion and a radial dynamic pressure bearing portion to support the rotor rotatably in relation to the stator, comprising lubrication fluid being filled in a lubrication fluid filled portion connecting said thrust dynamic pressure bearing portion with said radial dynamic pressure bearing portion and being used in common by said thrust dynamic pressure bearing portion and said radial dynamic pressure bearing portion, and a pump-in dynamic pressure generation portion being disposed between said thrust dynamic pressure bearing portion and said radial dynamic pressure bearing portion so as to generate pressure that causes the lubrication fluid to move toward said radial dynamic pressure bearing portion.

摘要翻译： 本发明的一个优选实施例提供一种电动机，其至少由定子，转子和动压轴承组成，其具有推力动压轴承部分和径向动压轴承部分，以相对于定子可转动地支撑转子， 包括润滑流体，其填充在将所述推力动压轴承部分与所述径向动压轴承部分连接并被所述推力动压轴承部分和所述径向动压轴承部分共同使用的润滑流体填充部分中，并且泵入 动压产生部分设置在所述推力动压轴承部分和所述径向动压轴承部分之间，以产生使润滑流体朝向所述径向动压承受部分移动的压力。

公开(公告)号：US07265469B2

公开(公告)日：2007-09-04

申请号：US11434781

申请日：2006-05-17

申请人： Mitsuo Kodama

发明人： Mitsuo Kodama

IPC分类号： H02K7/08

CPC分类号： F16C17/026 ,  F16C17/107 ,  F16C33/107 ,  H02K7/085

摘要： A spindle motor includes a rotor section, a stator section, and thrust and radial dynamic pressure fluid bearings. The thrust dynamic pressure fluid bearing includes first and second thrust dynamic pressure fluid bearing sections each generating a dynamic pressure in a direction opposite to each other. Lubrication fluid is filled in a filling section as a prescribed gap between the rotor and stator sections. The filling section includes a first filling section linking one end section opened to the outside, the second thrust dynamic pressure fluid bearing section, the first thrust dynamic pressure fluid bearing section and the radial dynamic pressure fluid bearing in order and a second filling section linking a point allocated between the second and first thrust dynamic pressure fluid bearing sections and another point allocated between the first thrust dynamic pressure fluid bearing section and the radial dynamic pressure fluid bearing in the first filling section.

摘要翻译： 主轴电机包括转子部分，定子部分以及推力和径向动态压力流体轴承。 推力动压流体轴承包括第一和第二推力动压流体轴承部分，每个在相反的方向上产生动压。 润滑流体作为转子和定子部分之间的规定间隙填充在填充部分中。 所述填充部包括将第一填充部与第二推压动力压力流体轴承部，所述第一推力动压流体轴承部和所述径向动压流体轴承的顺序连接，所述第一填充部将第一填充部与第二填充部连接， 分配在第一和第一推力动压流体轴承部分之间的点和在第一填充部分中的第一推力动压流体轴承部分和径向动压流体轴承之间分配的另一点。

公开(公告)号：US07204642B2

公开(公告)日：2007-04-17

申请号：US11085156

申请日：2005-03-22

申请人： Mitsuo Kodama

发明人： Mitsuo Kodama

IPC分类号： F16C32/06

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

摘要： A spindle motor (80) is composed of a sleeve (5), a shaft (1) that is rotatably sustained by the sleeve (5) in a radial direction through a dynamic pressure bearing (20) containing lubricant (12), and a hub (3) that is fixed to the shaft (1). The hub (3) has a raised section (11) in a ring shape that surrounds one end portion of the sleeve (3). The spindle motor (80) is provided with a taper seal section (14) for the lubricant (12) between an outer circumferential surface (10) of the one end portion of the sleeve (5) and an inner circumferential surface (13) of the raised section (11), which confronts the outer circumferential surface (10) of the sleeve (5), wherein a gap between these surfaces (10, 13) increases in accordance with a distance from the one end portion of the sleeve (5), and formed with a reservoir (25) for the lubricant (12) between an end surface (5d) of the one end portion of the sleeve (5) and a surface (3d) of the hub (3) that confronts the end surface (5d), wherein the end surface (5d) is in parallel with the surface (3d) with maintaining a prescribed gap (g) between them.

摘要翻译： 主轴电动机（80）由套筒（5），轴（1）组成，轴（1）通过包含润滑剂（12）的动压轴承（20）在径向方向上被套筒（5）可旋转地保持， 固定在轴（1）上的轮毂（3）。 轮毂（3）具有围绕套筒（3）的一个端部的环形的凸起部分（11）。 主轴电机（80）在套筒（5）的一个端部的外周表面（10）与内套筒（5）的内圆周表面（13）之间设置有用于润滑剂（12）的锥形密封部分（14） 与所述套筒（5）的外周表面（10）相对的所述凸起部分（11），其中所述表面（10,13）之间的间隙根据与所述套筒（5）的所述一个端部（5）的距离而增加 ），并且在套筒（5）的一个端部的端表面（5d）和轮毂（3）的表面（3d）之间形成有用于润滑剂（12）的储存器（25） 所述端面（5d），其中所述端面（5d）与所述表面（3d）平行，并在它们之间保持规定的间隙（g）。

公开(公告)号：US20070071375A1

公开(公告)日：2007-03-29

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，50BB）由轴（1,51）构成。 套筒（9,59），轴（1,51）插入其中; 以及介于轴（1,51）和套筒（9,59）之间的间隙中的润滑流体（20），支撑轴（1,51）的流体轴承装置（50B，50BB），以便于 相对于套筒（9,59）相对自由地旋转，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 所述锥形环（4,44）的表面（4a，54a）和所述轴（1,51）面向内周面（4a，54a）的外周面（1a，91b） 所述锥形环（4,44）形成为锥形表面（4a，54a），所述锥形表面（4a，54a）沿所述锥形环（4）的内圆周表面（4a，54a）之间的间隙倾斜， 54），并且轴（1,51）的外周面（1a，91b）根据从套筒（9,59）离开而变宽，并形成锥形密封部分（50TS，50ATS），其防止 路布里 阳离子流体（20）从泄漏出来，并且其中所述锥形环（4,44）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：US07105970B2

公开(公告)日：2006-09-12

申请号：US11062484

申请日：2005-02-23

申请人： Teryuki Yajima ,  Mitsuo Kodama

发明人： Teryuki 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），固定到转子轮毂（2）的轴（1），环形转子轭（5）和环形磁铁（6） 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：US20060002639A1

公开(公告)日：2006-01-05

申请号：US11085156

申请日：2005-03-22

申请人： Mitsuo Kodama

发明人： Mitsuo Kodama

IPC分类号： F16C32/06

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

摘要： A spindle motor (80) is composed of a sleeve (5), a shaft (1) that is rotatably sustained by the sleeve (5) in a radial direction through a dynamic pressure bearing (20) containing lubricant (12), and a hub (3) that is fixed to the shaft (1). The hub (3) has a raised section (11) in a ring shape that surrounds one end portion of the sleeve (3). The spindle motor (80) is provided with a taper seal section (14) for the lubricant (12) between an outer circumferential surface (10) of the one end portion of the sleeve (5) and an inner circumferential surface (13) of the raised section (11), which confronts the outer circumferential surface (10) of the sleeve (5), wherein a gap between these surfaces (10, 13) increases in accordance with a distance from the one end portion of the sleeve (5), and formed with a reservoir (25) for the lubricant (12) between an end surface (5d) of the one end portion of the sleeve (5) and a surface (3d) of the hub (3) that confronts the end surface (5d), wherein the end surface (5d) is in parallel with the surface (3d) with maintaining a prescribed gap (g) between them.

摘要翻译： 主轴电动机（80）由套筒（5），轴（1）组成，轴（1）通过包含润滑剂（12）的动压轴承（20）在径向方向上被套筒（5）可旋转地保持， 固定在轴（1）上的轮毂（3）。 轮毂（3）具有围绕套筒（3）的一个端部的环形的凸起部分（11）。 主轴电机（80）在套筒（5）的一个端部的外周表面（10）与内套筒（5）的内圆周表面（13）之间设置有用于润滑剂（12）的锥形密封部分（14） 与所述套筒（5）的外周表面（10）相对的所述凸起部分（11），其中所述表面（10,13）之间的间隙根据与所述套筒（5）的所述一个端部（5）的距离而增加 ），并且在套筒（5）的一个端部的端表面（5d）和轮毂（3）的表面（3d）之间形成有用于润滑剂（12）的储存器（25） 所述端面（5d），其中所述端面（5d）与所述表面（3d）平行，并在它们之间保持规定的间隙（g）。

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。