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1. 发明授权

US07645073B2 Hydrodynamic bearing device, spindle motor and disc recording and reproducing apparatus 失效
标题翻译：流体动力轴承装置，主轴电机和盘片记录和再现装置
公开(公告)号：US07645073B2
公开(公告)日：2010-01-12
申请号：US11236830
申请日：2005-09-28
申请人： Yasunori Tokuno , Toshinori Takasuka , Taizo Ikegawa
发明人： Yasunori Tokuno , Toshinori Takasuka , Taizo Ikegawa
IPC分类号： F16C32/06
CPC分类号： F16C33/107 , F16C17/107 , F16C2370/12
摘要： A hydrodynamic bearing device which realizes power saving, reduction of a time period necessary for stabilizing rotation, and enhancement in durability to startup and halting of the motor at the same time by accelerating circulation of a lubricant in the vicinity of a flange with torque loss being kept low is provided. A flange (3) is fixed to one end of a shaft (2). On an inner surface of one of openings of a sleeve (1), a step portion (1C) is provided. When the shaft (2) is inserted into the sleeve (1), the flange (3) is in close vicinity to the step portion (1C). An inner diameter of the step portion (1C) is smaller in end portions in an axial direction than in a central portion. Thus, a gap between an outer surface (3C) of the flange (3) and a surface of the step portion (1C) which opposes the outer surface (3C) is narrow in the vicinity of boundaries of the outer surface (3C) of the flange (3) than in the vicinity the central portion.
摘要翻译：一种流体动力轴承装置，其通过在扭矩损失的情况下加速法兰附近的润滑剂循环，同时实现节电，减少旋转稳定所需的时间段，并且提高马达启动和停止的耐久性保持低水平。凸缘（3）固定在轴（2）的一端。在套筒（1）的一个开口的内表面上设有台阶部（1C）。当轴（2）插入到套筒（1）中时，凸缘（3）紧邻台阶部分（1C）。阶梯部（1C）的内径在轴向的端部比中央部小。因此，凸缘（3）的外表面（3C）与台阶部分（1C）的与外表面（3C）相对的表面之间的间隙在外表面（3C）的边界附近凸缘（3）比中心部分附近。

2. 发明申请

US20060067595A1 Hydrodynamic bearing device, spindle motor and disc recording and reproducing apparatus 失效
标题翻译：流体动力轴承装置，主轴电机和盘片记录和再现装置
公开(公告)号：US20060067595A1
公开(公告)日：2006-03-30
申请号：US11236830
申请日：2005-09-28
申请人： Yasunori Tokuno , Toshinori Takasuka , Taizo Ikegawa
发明人： Yasunori Tokuno , Toshinori Takasuka , Taizo Ikegawa
IPC分类号： F16C32/06
CPC分类号： F16C33/107 , F16C17/107 , F16C2370/12
摘要： A hydrodynamic bearing device which realizes power saving, reduction of a time period necessary for stabilizing rotation, and enhancement in durability to startup and halting of the motor at the same time by accelerating circulation of a lubricant in the vicinity of a flange with loss torque being kept low is provided. A flange (3) is fixed to one end of a shaft (2). On an inner surface of one of openings of a sleeve (1), a step portion (1C) is provided. When the shaft (2) is inserted into the sleeve (1), the flange (3) is in close vicinity to the step portion (1C). An inner diameter of the step portion (1C) is smaller in end portions in an axial direction than in a central portion. Thus, a gap between an outer surface (3C) of the flange (3) and a surface of the step portion (1C) which opposes the outer surface (3C) is narrow in the vicinity of boundaries of the outer surface (3C) of the flange (3) than in the vicinity the central portion.
摘要翻译：一种流体动力轴承装置，其通过以损失扭矩加速法兰附近的润滑剂的循环，同时实现节电，减少旋转稳定所需的时间段，并且提高马达启动和停止的耐久性保持低水平。凸缘（3）固定在轴（2）的一端。在套筒（1）的一个开口的内表面上设有台阶部（1C）。当轴（2）插入到套筒（1）中时，凸缘（3）靠近台阶部分（1C）。台阶部（1C）的内径在轴向的端部比中央部小。因此，凸缘（3）的外表面（3C）与与外表面（3C）相对的台阶部分（1C）的表面之间的间隙在外表面的边界附近 3C）比中心部分附近。

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