公开(公告)号：US20060097592A1

公开(公告)日：2006-05-11

申请号：US10904384

申请日：2004-11-08

申请人： Shigeharu Sumi

发明人： Shigeharu Sumi

IPC分类号： H02K5/16 ,  H02K7/08

CPC分类号： G11B19/2018 ,  F16C17/107 ,  F16C33/103 ,  F16C33/107 ,  F16C33/745 ,  F16C2370/12 ,  H02K5/1675

摘要： A fluid dynamic pressure bearing having a tapered seal part provided between a sleeve and a housing, from which lubricating liquid is injected and functions as a buffer of the lubricating liquid. An end part of a radial gap between the sleeve and a shaft body is a labyrinth filled with lubricating liquid. An opening periphery is covered with an oil repellent film to prevent outflow of the lubricating liquid. These features can make the size of the tapered seal part small in the axial direction. It enables a larger radial dynamic pressure bearing mechanism to be formed and, in particular, bearing rigidity in the radial direction can be increased.

摘要翻译： 一种流体动压轴承，其具有设置在套筒和壳体之间的锥形密封部，润滑液从该轴承和壳体注入并用作润滑液的缓冲器。 套筒和轴体之间的径向间隙的端部是填充有润滑液体的迷宫。 用斥油膜覆盖开口周边以防止润滑液流出。 这些特征使得锥形密封件的尺寸在轴向方向上较小。 能够形成更大的径向动压轴承机构，特别是能够提高径向的轴承刚性。

公开(公告)号：US06671125B1

公开(公告)日：2003-12-30

申请号：US09680231

申请日：2000-10-06

申请人： Shigeharu Sumi

发明人： Shigeharu Sumi

IPC分类号： G11B1702

CPC分类号： H02K5/173 ,  F16C33/765 ,  F16C2370/12 ,  F16J15/43 ,  G11B19/2018 ,  G11B33/1466 ,  G11B33/1473 ,  H02K5/10

摘要： A fluid seal is disposed in a radial gap between a shaft of a motor and a hub rotatably held about the shaft, for preventing contaminates such as oil dusts and the like within the motor from leaking to the outside of the motor. The fluid seal has an annular body disposed about the axis of the motor shaft that is fixed to the hub directly or with a fluid seal holder. The annular sealing surface of the annular body is spaced from the outer sealing surface of the shaft by a minute gap, and a sealing portion is formed in the gap. The gap is filled with a fluid having a sufficient barrier pressure to prevent contaminates from flowing out of the motor. The fluid seal may have an approximately concave shape facing the axis of the shaft when the shaft is cut away by a plane passing through the axis of the shaft. This structure prevents the fluid from being scattered due to centrifugal force arising during operation of the motor. The fluid seal also may have an angled seal structure to keep the fluid in against external shocks. A fluid seal built-into a ball bearing is also disclosed.

摘要翻译： 流体密封件设置在马达的轴和可旋转地保持在轴之间的轮毂之间的径向间隙中，以防止马达内的污染物例如油灰等泄漏到马达的外部。 流体密封件具有围绕马达轴的轴线设置的环形体，其直接地或与流体密封保持器固定到轮毂。 环状体的环状密封面与轴的外侧密封面间隔开，间隙形成有密封部。 间隙填充有具有足够的阻挡压力的流体，以防止污染物从马达流出。 当轴被穿过轴的轴线的平面切除时，流体密封件可以具有面向轴的轴线的近似凹形。 这种结构防止由于在电动机运行期间产生的离心力而使流体分散。 流体密封件还可以具有成角度的密封结构，以保持流体免受外部冲击。 还公开了内置于滚珠轴承中的流体密封件。

公开(公告)号：US06668025B1

公开(公告)日：2003-12-23

申请号：US09236419

申请日：1999-01-25

申请人： Shigeharu Sumi ,  Kenji Adachi

发明人： Shigeharu Sumi ,  Kenji Adachi

IPC分类号： H04L2714

CPC分类号： H04L27/3854 ,  H03B2202/084 ,  H03D3/007 ,  H03D7/166

摘要： A tuning demodulator for digitally modulated signals tunes and detects a desired RF signal by an I/Q detection circuit and a tuning oscillation circuit composed of a PLL synthesizer having an output frequency close to the desired RF signal, and being provided with electrical or mechanical signal separating components to suppress the leaked output power from the tuning oscillation circuit. The signal separation components include an arrangement of circuits inside a metallic case, a metallic partition board, and an arrangement of power supply terminals. When the tuning demodulator detects a frequency error by a frequency error detection circuit, it adjusts a voltage-controlled reference oscillator that gives the PLL synthesizer an exact frequency reference, and hence it prevents deterioration of the bit error rate of the detected signals. Further, an error correction circuit can be added to compensate the fluctuations in characteristics of constituent parts.

摘要翻译： 用于数字调制信号的调谐解调器通过I / Q检测电路和由具有接近期望RF信号的输出频率的PLL合成器组成的调谐振荡电路来调谐和检测期望的RF信号，并且具有电或机械信号 分离组件以抑制来自调谐振荡电路的泄漏的输出功率。 信号分离部件包括金属外壳内的电路布置，金属隔板以及电源端子的布置。 当调谐解调器通过频率误差检测电路检测到频率误差时，它调节给PLL合成器精确频率参考的压控参考振荡器，因此可以防止检测信号的误码率恶化。 此外，可以添加误差校正电路来补偿组成部件的特性的波动。

公开(公告)号：US07635936B2

公开(公告)日：2009-12-22

申请号：US11849847

申请日：2007-09-04

申请人： Shigeharu Sumi

发明人： Shigeharu Sumi

IPC分类号： H02K5/16

CPC分类号： F16C33/103 ,  F16C17/107 ,  F16C33/107 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2036 ,  H02K5/1675

摘要： A fluid dynamic bearing includes a shaft, a stationary portion supporting the shaft in a rotatable manner, a lubricating oil arranged in a radial gap defined between an outer circumferential surface of the shaft and a surface of the stationary portion, opposing each other. The fluid dynamic bearing includes a first seal portion arranged radially outside of the radial gap, and a second seal portion arranged at an axially upper end of the radial gap. The axial length of the first seal portion is greater than that of the second seal portion.

摘要翻译： 流体动力轴承包括轴，以可旋转的方式支撑轴的静止部分，布置在径向间隙中的润滑油，所述润滑油限定在轴的外周表面和固定部分的表面之间，彼此相对。 流体动力轴承包括设置在径向间隙的径向外侧的第一密封部分和布置在径向间隙的轴向上端的第二密封部分。 第一密封部分的轴向长度大于第二密封部分的轴向长度。

公开(公告)号：US20050095159A1

公开(公告)日：2005-05-05

申请号：US10711840

申请日：2004-10-08

申请人： Shigeharu Sumi ,  Jyoichi Hiroshi ,  Hironori Ando

发明人： Shigeharu Sumi ,  Jyoichi Hiroshi ,  Hironori Ando

IPC分类号： F16C17/10 ,  F16C33/10 ,  F16C33/14 ,  G11B19/20 ,  H02K7/08 ,  F01C1/00

CPC分类号： F16C33/107 ,  F16C17/107 ,  F16C2370/12 ,  Y10T29/49636 ,  Y10T29/49639 ,  Y10T29/49702

摘要： Fluid-dynamic-pressure bearing manufacturing method for more efficient and fail-safe degassing of bearing oil. Method makes it possible to prevent the generation of air bubbles in the course of an oil-charging operation that amounts to a step following degassing, and to single out the causative source of air bubbles when their generation has been detected. At the same time oil that is under a reduced-pressure environment within an oil-storing vacuum chamber is vacuum-degassed, immersed within the oil a stirrer for agitating and degassing the oil is rotated by indirect drive means, and the oil after having been degassed is supplied to a vacuum chamber where a fluid-dynamic-pressure bearing unit is retained—which has been pumped down to a pressure below the pressure within the oil-storing vacuum chamber—and is charged into the bearing clearances by raising the internal pressure of the bearing-retaining vacuum chamber.

摘要翻译： 流体动压轴承制造方法，用于轴承油更有效和故障安全脱气。 方法可以防止在脱气后的步骤中的充油操作过程中产生气泡，并且在检测到它们的产生时将气泡源单独排出。 同时，在储油真空室内处于减压环境下的油被真空脱气，浸入油中用于搅拌和脱气的搅拌器，通过间接驱动装置旋转油，并且油已经被 脱气被供给到真空室，其中保持流体动压轴承单元，该真空室已经被泵送到低于储油真空室内的压力的压力，并且通过提高内部压力而被加载到轴承间隙中 的轴承保持真空室。

公开(公告)号：US5099213A

公开(公告)日：1992-03-24

申请号：US465162

申请日：1990-04-02

申请人： Kunio Yamakawa ,  Shigeharu Sumi

发明人： Kunio Yamakawa ,  Shigeharu Sumi

IPC分类号： H03L7/095 ,  H03L7/12

CPC分类号： H03L7/12 ,  H03L7/095 ,  Y10S331/02

摘要： The invention relates to a phase-locked oscillator for communication apparatus and the like, and provides a phase lock detection circuit which can positively perform the phase lock detection. In order to accomplish this object, the output of a loop filter (2) is supplied to a first level detector (5) and also to an amplitude detector (6). The output of the amplitude detector (6) is supplied to a second level detector (7). A switching means (8) performs the switching operation in accordance with the output of the second level detector (7) to select an output from the first level detector (5) or a LOW level, and the selected one is output as a phase lock detection signal.

摘要翻译： PCT No.PCT / JP89 / 00593 Sec。 371日期1990年04月2日 102（e）1990年4月2日PCT PCT 1989年6月14日PCT公布。 出版物WO89 / 12930 日期为1989年12月28日。本发明涉及通信装置等的锁相振荡器，并提供可以积极地执行锁相检测的锁相检测电路。 为了实现该目的，环路滤波器（2）的输出被提供给第一电平检测器（5）并且还被提供给振幅检测器（6）。 振幅检测器（6）的输出被提供给第二电平检测器（7）。 切换装置（8）根据第二电平检测器（7）的输出执行切换操作，以选择来自第一电平检测器（5）的输出或低电平，并且所选择的输出作为相位锁定 检测信号。

公开(公告)号：US20100166345A1

公开(公告)日：2010-07-01

申请号：US12595123

申请日：2008-04-28

申请人： Masaharu Hori ,  Shigeharu Sumi

发明人： Masaharu Hori ,  Shigeharu Sumi

IPC分类号： F16C32/06

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

摘要： A protrusion (7b3) directed axially downwards is provided at a bottom portion (7b) of a housing (7), and an outer peripheral surface (7b31) of the protrusion (7b3) is fixed to an inner peripheral surface (6a) of a bracket (6). When a thrust load is applied to the bottom portion (7b) of the housing (7), a part of the load is supported by the bracket (6) via the protrusion (7b3). Thus, a strength of a boundary portion (P) between a side portion (7a) and the bottom portion (7b) of the housing (7) increases, making it possible to prevent rupture of the boundary portion (P) due to an excessive thrust load. On the other hand, a wall thickness of the bottom portion (7b) can be made invariable, so it is possible to suppress deformation through molding shrinkage of a thrust bearing surface formed on an inner end surface (7b1) of the bottom portion (7b).

摘要翻译： 在壳体（7）的底部（7b）处设置有轴向向下突出的突起（7b3），突出部（7b3）的外周面（7b31）固定在壳体（7）的内周面（6a） 支架（6）。 当推力载荷施加到壳体（7）的底部（7b）时，一部分载荷通过突起（7b3）由支架（6）支撑。 因此，壳体（7）的侧部（7a）和底部（7b）之间的边界部分（P）的强度增加，从而可以防止边界部分（P）由于过度的破裂 推力载荷。 另一方面，可以使底部（7b）的壁厚不变，能够抑制形成在底部（7b）的内端面（7b1）上的止推轴承面的成型收缩的变形 ）。

公开(公告)号：US20060215312A1

公开(公告)日：2006-09-28

申请号：US11277618

申请日：2006-03-28

申请人： Shigeharu Sumi ,  Takeshi Ohiro

发明人： Shigeharu Sumi ,  Takeshi Ohiro

IPC分类号： G11B17/02

CPC分类号： G11B19/2018 ,  H02K5/1675 ,  H02K11/40

摘要： Spindle motor capable of positively fixing and securing conduction between a housing and a bracket, and a recording disk driving apparatus using the spindle motor. The bracket has a circular through hole, and the housing is fixedly inserted in the circular through hole. A protrusion is formed on at least one of the bracket and the housing. A conductive member is between and in contact with a flange and the bracket or the housing in the direction of the rotary axis to electrically connect the flange and the bracket or the housing. The conductive member is in contact with the flange and the bracket or the housing under an elastic stress.

摘要翻译： 能够正确地固定和固定壳体和支架之间的传导的主轴电动机以及使用主轴电动机的记录盘驱动装置。 支架具有圆形通孔，并且壳体固定地插入圆形通孔中。 突出部形成在支架和壳体中的至少一个上。 导电构件在凸缘和支架或壳体之间在旋转轴线的方向之间并且与凸缘和壳体接触以电连接凸缘和支架或壳体。 导电构件在弹性应力下与凸缘和支架或壳体接触。

公开(公告)号：US6072992A

公开(公告)日：2000-06-06

申请号：US894762

申请日：1998-07-17

申请人： Akira Mishima ,  Shigeharu Sumi ,  Motoyoshi Kitagawa

发明人： Akira Mishima ,  Shigeharu Sumi ,  Motoyoshi Kitagawa

IPC分类号： H01F21/02 ,  H01F21/04 ,  H01F41/04 ,  H03B5/18 ,  H03J1/00 ,  H03J1/14 ,  H03J3/00 ,  H03J7/06 ,  H03L7/099 ,  H03L7/18 ,  H04L27/152 ,  H04L27/227 ,  H04L27/233 ,  H03J3/28 ,  H03J5/02 ,  H03L7/08 ,  H04L27/22

CPC分类号： H03L7/0805 ,  H01F21/02 ,  H01F21/04 ,  H01F41/045 ,  H03B5/1841 ,  H03J1/0041 ,  H03J1/005 ,  H03J1/14 ,  H03J3/00 ,  H03J7/065 ,  H03L7/099 ,  H03L7/18 ,  H04L27/152 ,  H04L27/227 ,  H04L27/233

摘要： A high frequency apparatus for receiving digital modulated high frequency signal which withstands vibration and is easy to adjust for tuning, yet presents clear oscillation signal. The invented apparatus has an input terminal(101), a mixer(104) which receives at one input the signals supplied to input terminal(101) and at the other input an output signal of local oscillator(103), and output terminals(107,108) to which the output signal of mixer(104) is delivered. A voltage controlled oscillator constituting said local oscillator(103) has an oscillating section and a tuning section; the tuning section has a movable conductive member(119) and a gluing agent(120) for maintaining a state after adjustment. Control loop has a high loop band width which is large enough so as the noise of local oscillator(103) is not dominated by noise of the above mentioned voltage controlled oscillator.

摘要翻译： PCT No.PCT / JP95 / 02668 Sec。 371日期：1998年7月17日 102（e）日期1998年7月17日PCT 1995年12月25日PCT公布。 第WO97 / 23953号公报 日期1997年7月3日用于接收数字调制高频信号的高频装置，其承受振动并且易于调节以调谐，但呈现清晰的振荡信号。 本发明的装置具有输入端（101），混频器（104），其在一个输入端接收提供给输入端（101）的信号，另一端接收本地振荡器（103）的输出信号，输出端（107,108 ），输送混频器（104）的输出信号。 构成所述本地振荡器（103）的压控振荡器具有振荡部分和调谐部分; 调谐部分具有用于在调节之后维持状态的可移动导电部件（119）和胶粘剂（120）。 控制回路具有足够大的环路带宽，使得本地振荡器（103）的噪声不受上述压控振荡器的噪声的支配。

公开(公告)号：US07511918B2

公开(公告)日：2009-03-31

申请号：US11277618

申请日：2006-03-28

申请人： Shigeharu Sumi ,  Takeshi Ohiro

发明人： Shigeharu Sumi ,  Takeshi Ohiro

IPC分类号： G11B17/08 ,  H02K11/00

CPC分类号： G11B19/2018 ,  H02K5/1675 ,  H02K11/40

摘要： Spindle motor capable of positively fixing and securing conduction between a housing and a bracket, and a recording disk driving apparatus using the spindle motor. The bracket has a circular through hole, and the housing is fixedly inserted in the circular through hole. A protrusion is formed on at least one of the bracket and the housing. A conductive member is between and in contact with a flange and the bracket or the housing in the direction of the rotary axis to electrically connect the flange and the bracket or the housing. The conductive member is in contact with the flange and the bracket or the housing under an elastic stress.

摘要翻译： 能够正确地固定和固定壳体和支架之间的传导的主轴电动机以及使用主轴电动机的记录盘驱动装置。 支架具有圆形通孔，并且壳体固定地插入圆形通孔中。 突出部形成在支架和壳体中的至少一个上。 导电构件在凸缘和支架或壳体之间在旋转轴线的方向之间并且与凸缘和壳体接触以电连接凸缘和支架或壳体。 导电构件在弹性应力下与凸缘和支架或壳体接触。