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1. 发明授权

US06552456B2 Hydraulic dynamic pressure bearing motor 有权
标题翻译：液压动压轴承电机
公开(公告)号：US06552456B2
公开(公告)日：2003-04-22
申请号：US09996830
申请日：2001-11-29
申请人： Hiromitsu Goto , Shinji Kinoshita , Toru Kumagai , Yukihiro Nakayama , Chihiro Tazawa , Mitsuharu Iwamoto , Ryoji Yoneyama
发明人： Hiromitsu Goto , Shinji Kinoshita , Toru Kumagai , Yukihiro Nakayama , Chihiro Tazawa , Mitsuharu Iwamoto , Ryoji Yoneyama
IPC分类号： H02K708
CPC分类号： F16C33/107 , F16C17/107 , F16C2370/12 , G11B19/2009 , H02K5/1675
摘要： A hydraulic dynamic pressure bearing motor has a rotational shaft mounted to undergo rotation about a rotational axis and having a shaft section and a flange section. A sleeve has a cavity for receiving the rotational shaft. A cover member is disposed over an open end of the sleeve cavity. A hydraulic dynamic pressure bearing includes minute radial and thrust clearances disposed between outer surface portions of the shaft and flange sections of the rotational shaft and inner surface portions of the sleeve and the cover member. A lubricating fluid is disposed in the minute radial and thrust clearances. The minute radial and thrust clearances are dimensioned so that during a non-rotational state of the rotational shaft, the flange section of the rotational shaft contacts preselected inner surface portions of the sleeve and the cover member while the shaft section of the rotational shaft does not contact any portion of the sleeve and an inner peripheral surface of the cover member.
摘要翻译：液压动压轴承马达具有安装成绕旋转轴线旋转并具有轴部和凸缘部的旋转轴。套筒具有用于接收旋转轴的空腔。盖构件设置在套筒空腔的开口端上。液压动压轴承包括设置在轴的外表面部分和旋转轴的凸缘部分以及套筒和盖部件的内表面部分之间的微小的径向和推力间隙。润滑流体以微小的径向和推力间隙设置。微小的径向和推力间隙的尺寸使得在旋转轴的非旋转状态期间，旋转轴的凸缘部分接触套筒和盖构件的预选的内表面部分，而旋转轴的轴部分不接触套筒的任何部分和盖构件的内周表面。

2. 发明授权

US06575633B2 Hydraulic bearing motor 有权
公开(公告)号：US06575633B2
公开(公告)日：2003-06-10
申请号：US09996828
申请日：2001-11-29
申请人： Hiromitsu Goto , Shinji Kinoshita , Toru Kumagai , Yukihiro Nakayama , Chihiro Tazawa , Mitsuharu Iwamoto , Ryoji Yoneyama
发明人： Hiromitsu Goto , Shinji Kinoshita , Toru Kumagai , Yukihiro Nakayama , Chihiro Tazawa , Mitsuharu Iwamoto , Ryoji Yoneyama
IPC分类号： F16C3206
CPC分类号： F16C33/107 , F16C17/026 , F16C17/045 , F16C17/107 , H02K5/1675
摘要： In a hydraulic bearing motor, by means of dynamic pressure generating grooves provided on a thrust shaft with a larger diameter not only on the end face thereof but also on the shaft surface thereof, pressures generated in oil when rotating a shaft body are made to be applied not only in the axial direction but also in the radial direction with high magnitude. This can provide the hydraulic bearing motor as being capable of satisfying features of exhibiting small NRRO, and vibration and shock resistance even with a thinned hydraulic bearing motor.

3. 发明申请

US20070177832A1 Fluid dynamic pressure bearing, motor, and recording medium driving device 失效
标题翻译：流体动压轴承，电机和记录介质驱动装置
公开(公告)号：US20070177832A1
公开(公告)日：2007-08-02
申请号：US10589422
申请日：2005-02-17
申请人： Hiromitsu Gotoh , Kazuaki Oguchi , Shinji Kinoshita , Chihiro Tazawa , Tomohiko Hayashi
发明人： Hiromitsu Gotoh , Kazuaki Oguchi , Shinji Kinoshita , Chihiro Tazawa , Tomohiko Hayashi
IPC分类号： F16C32/06
CPC分类号： F16C33/107 , F16C17/045 , F16C17/107 , F16C33/1085 , F16C2370/12 , G11B19/2009 , H02K7/085
摘要： The generation of bubbles can be suppressed by enabling a stable supply of working fluid to a dynamic pressure generating groove, and oscillation at the time of rotation and leakage of working fluid can be prevented effectively by efficiently releasing any bubbles generated. There is provided a fluid dynamic pressure bearing 1 provided with an annular dynamic pressure generating face 17 made by forming a dynamic pressure generating groove, which draws a working fluid 14 toward a midway position in the radial direction from the inside and outside of a thrust bearing plate 13 in the radial direction, when a shaft 10 and a housing 11 are rotated relative to each other about the axis, on thickness direction end faces 13a, 13b of the thrust bearing plate 13, or on an inner surface of the housing 11, and an inner groove section 16, which is located on an inner peripheral side thereof and that is depressed more than the dynamic pressure generating face 17 in the thickness direction, on the end faces 13a, 13b. Moreover there is provided a through hole 19 which passes through the thrust bearing plate 13 in the thickness direction so as to open to the dynamic pressure generating face 17, and there is provided a communicating cavity 20 which connects the opening portion of the through hole 19 and the inner groove section 16.
摘要翻译：可以通过使动态压力产生槽稳定地供给工作流体来抑制气泡的产生，并且通过有效地释放产生的气泡，可以有效地防止工作流体的旋转和泄漏时的振动。提供了一种流体动压轴承1，其设置有环形动压产生面17，该环形动压产生面17通过形成动压产生槽而形成，动压产生槽从推力轴承的内侧和外侧向径向的中间位置拉动工作流体14 板13在径向方向上，当轴10和壳体11绕轴线相对于推力轴承板13的厚度方向端面13a，13b延伸，或者在壳体的内表面上 11以及位于其内周侧并在厚度方向上比动压产生面17压下的内槽部16在端面13a，13b上。而且，在厚度方向上设置有贯通推力轴承板13的通孔19，以通向动压产生面17，并且设置有连通孔20，连通孔20连通通孔19的开口部和内槽部16。

4. 发明授权

US07568839B2 Fluid dynamic pressure bearing, motor, and recording medium driving device 失效
标题翻译：流体动压轴承，电机和记录介质驱动装置
公开(公告)号：US07568839B2
公开(公告)日：2009-08-04
申请号：US10589422
申请日：2005-02-17
申请人： Hiromitsu Gotoh , Kazuaki Oguchi , Shinji Kinoshita , Chihiro Tazawa , Tomohiko Hayashi
发明人： Hiromitsu Gotoh , Kazuaki Oguchi , Shinji Kinoshita , Chihiro Tazawa , Tomohiko Hayashi
IPC分类号： F16C32/06
CPC分类号： F16C33/107 , F16C17/045 , F16C17/107 , F16C33/1085 , F16C2370/12 , G11B19/2009 , H02K7/085
摘要： A fluid dynamic pressure bearing has an annular dynamic pressure generating face having a dynamic pressure generating groove, which draws a working fluid toward a midway position in the radial direction from the inside and outside of a thrust bearing plate in the radial direction when a shaft and a housing are rotated relative to each other. The dynamic pressure generating groove is provided on thickness direction end faces of the thrust bearing plate or on an inner surface of the housing, and an inner groove section is located on an inner peripheral side of the dynamic pressure generating face on the end faces and is recessed more than the dynamic pressure generating face in the thickness direction. A through-hole extends through the thrust bearing plate in the thickness direction so as to open to the dynamic pressure generating face, and a communicating cavity connects the opening portion of the through-hole and the inner groove section.
摘要翻译：流体动压轴承具有环形动压产生面，其具有动压产生槽，其在径向方向上从止推轴承板的内侧和外侧在径向方向上沿径向从中间位置拉动工作流体，壳体相对于彼此旋转。动压产生槽设置在推力轴承板的厚度方向端面上或壳体的内表面上，内侧槽部位于端面的动压产生面的内周侧，为在厚度方向上比动压产生面凹陷更多。通孔在厚度方向上延伸穿过止推轴承板，以便打开动压产生面，并且连通腔将通孔的开口部和内槽部连通。

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