公开(公告)号：US08085495B2

公开(公告)日：2011-12-27

申请号：US12053810

申请日：2008-03-24

申请人： Masafumi Kumoi ,  Yukinori Maruyama

发明人： Masafumi Kumoi ,  Yukinori Maruyama

IPC分类号： G11B19/20 ,  F16C17/10

CPC分类号： G11B17/0282 ,  F16C17/026 ,  F16C17/045 ,  F16C17/107 ,  F16C33/107 ,  F16C2370/12 ,  G11B19/2036 ,  H02K5/1675 ,  H02K7/085

摘要： A spindle motor can suppress the generation of noise during swinging and the extend service life, and also suppress the increase in current consumption. The outside diameter of a thrust hydrodynamic groove is at least 10% of the outside diameter of a disk-shaped medium, and the depth of the radial hydrodynamic groove is greater than the depth of the thrust hydrodynamic groove. By adjusting to specific numbers, the angular stiffness in the thrust bearing is raised, and even if a disturbance torque should be applied, wear or noise caused by metal contact inside the bearing can be suppressed.

摘要翻译： 主轴电动机可以抑制摆动时产生的噪声和延长使用寿命，并且还抑制电流消耗的增加。 推力流体动力槽的外径至少为圆盘状介质的外径的10％，径向流体动力槽的深度大于推力流体动力槽的深度。 通过调整到具体数字，推力轴承的角度刚度提高，即使施加扰动转矩，也可以抑制由轴承内的金属接触引起的磨损或噪音。

公开(公告)号：US20070292060A1

公开(公告)日：2007-12-20

申请号：US11812024

申请日：2007-06-14

申请人： Keigo Kusaka ,  Masafumi Kumoi

发明人： Keigo Kusaka ,  Masafumi Kumoi

IPC分类号： F16C32/06

CPC分类号： H02K7/085 ,  F16C17/026 ,  F16C17/045 ,  F16C17/107 ,  F16C33/107 ,  F16C2370/12 ,  G11B19/2036

摘要： A hydrodynamic bearing, a motor including the same, and a recording and reproducing apparatus which can improve vibration resistance property and suppress noises even in a situation where vibration is expected are provided. Radial hydrodynamic grooves formed on an inner peripheral surface of a sleeve have a shape which satisfy relational expression L2

摘要翻译： 提供了一种流体动力轴承，包括该液压动力轴承的马达，以及即使在预期的振动的情况下也能够提高耐振性和抑制噪声的记录和再现装置。 形成在套筒的内周面上的径向流体动力槽具有满足关系式L 2

公开(公告)号：US20080181545A1

公开(公告)日：2008-07-31

申请号：US12022568

申请日：2008-01-30

申请人： Hisaaki YANO ,  Masafumi Kumoi ,  Yosei Yoshikawa ,  Yukinori Maruyama

发明人： Hisaaki YANO ,  Masafumi Kumoi ,  Yosei Yoshikawa ,  Yukinori Maruyama

IPC分类号： F16C32/06

CPC分类号： F16C33/107 ,  F16C17/026 ,  F16C17/107 ,  F16C2370/12

摘要： There is provided a hydrodynamic bearing device having a communicating hole and with a bearing structure such that lubricant tends not to flow out of the bearing openings of the hydrodynamic bearing device even when the hydrodynamic bearing device is subjected to a large impact, as well as a spindle motor in which this hydrodynamic bearing device is installed. A hydrodynamic bearing device has a shaft and a sleeve that rotatably supports the shaft. A thrust flange is formed at one end of the shaft, is equipped with a protrusion that is opposed to a stepped component of the sleeve in the axial direction, and is configured such that the thrust flange does not block a communicating hole when an impact is applied, which suppresses the generation of a cavity near the thrust flange.

摘要翻译： 提供了具有连通孔和轴承结构的流体动力轴承装置，使得即使当流体动力轴承装置受到大的冲击时，润滑剂也不会流出流体动力轴承装置的轴承开口，并且 主轴电机，其中安装了该流体动力轴承装置。 流体动力轴承装置具有可旋转地支撑轴的轴和套筒。 推力凸缘形成在轴的一端，其具有与轴向方向的套筒的阶梯部件相对的突起，并且构造成使得当撞击是不会阻塞连通孔的推力凸缘 可以抑制在推力凸缘附近产生空腔。

公开(公告)号：US07105962B2

公开(公告)日：2006-09-12

申请号：US10343485

申请日：2001-07-26

申请人： Shigeru Yoshida ,  Kodo Fukuoka ,  Masafumi Kumoi ,  Koji Kuyama

发明人： Shigeru Yoshida ,  Kodo Fukuoka ,  Masafumi Kumoi ,  Koji Kuyama

IPC分类号： H02K11/00

CPC分类号： H02K3/522 ,  H02K2211/03

摘要： A brushless motor, comprising a rotor having a magnet, a coil for generating a magnetic field for drivingly rotating the rotor, and a power supply terminal for supplying a power to the coil from outside, wherein all electrical connection parts ranging from the power supply terminal to the end of the coil are connected to each other through welded parts.

摘要翻译： 一种无刷电动机，包括具有磁体的转子，用于产生用于驱动转子的磁场的线圈，以及从外部向线圈供电的电源端子，其中，从电源端子 线圈端部通过焊接部件相互连接。