公开(公告)号：US07674043B2

公开(公告)日：2010-03-09

申请号：US11723316

申请日：2007-03-19

申请人： Takafumi Asada ,  Hiroaki Saito ,  Daisuke Itou ,  Hiroyuki Kiriyama ,  Tomoharu Takeda

发明人： Takafumi Asada ,  Hiroaki Saito ,  Daisuke Itou ,  Hiroyuki Kiriyama ,  Tomoharu Takeda

IPC分类号： F16C32/06

CPC分类号： F16C33/102 ,  F16C17/107 ,  F16C33/107 ,  F16C33/74 ,  F16C2370/12

摘要： An object of the present invention is to provide a hydrodynamic bearing type rotary device which can improve rotation performance, suppress a friction torque, and reduce power consumption of motor, and a recording and reproducing apparatus including the same. A shaft having a flange on one end and a hub on the other end is provided with a bearing of a sleeve so as to be rotatable. The sleeve includes a communication hole. A third gap between the hub and the sleeve end surface is a flow path, and is connected to the communication hole. Provided that a first gap between a thrust plate 4 and the flange 3 is S1, a second gap between the flange 3 and a lower end surface of the sleeve 1 is S2, and a third gap between the upper end surface of the sleeve 1 and the hub 7 is S3, widths of the gaps satisfy the relational expression, S3>(S1+S2).

摘要翻译： 本发明的目的是提供一种能够提高旋转性能，抑制摩擦转矩并降低电动机的功率消耗的流体动力轴承型旋转装置，以及包括其的记录和再现装置。 具有一端的凸缘和另一端的毂的轴设置有可旋转的套筒的轴承。 套筒包括一个连通孔。 轮毂和套筒端面之间的第三间隙是流动路径，并连接到连通孔。 假设推力板4和凸缘3之间的第一间隙为S1，凸缘3与套筒1的下端面之间的第二间隙为S2，套管1的上端面与 轮毂7是S3，间隙的宽度满足关系式S3>（S1 + S2）。

公开(公告)号：US20070217721A1

公开(公告)日：2007-09-20

申请号：US11723316

申请日：2007-03-19

申请人： Takafumi Asada ,  Hiroaki Saito ,  Daisuke Itou ,  Hiroyuki Kiriyama ,  Tomoharu Takeda

发明人： Takafumi Asada ,  Hiroaki Saito ,  Daisuke Itou ,  Hiroyuki Kiriyama ,  Tomoharu Takeda

IPC分类号： F16C32/06

CPC分类号： F16C33/102 ,  F16C17/107 ,  F16C33/107 ,  F16C33/74 ,  F16C2370/12

摘要： An object of the present invention is to provide a hydrodynamic bearing type rotary device which can improve rotation performance, suppress a friction torque, and reduce power consumption of motor, and a recording and reproducing apparatus including the same. A shaft having a flange on one end and a hub on the other end is provided with a bearing of a sleeve so as to be rotatable. The sleeve includes a communication hole. A third gap between the hub and the sleeve end surface is a flow path, and is connected to the communication hole. Provided that a first gap between a thrust plate 4 and the flange 3 is S1, a second gap between the flange 3 and a lower end surface of the sleeve 1 is S2, and a third gap between the upper end surface of the sleeve 1 and the hub 7 is S3, widths of the gaps satisfy the relational expression, S3>(S1+S2).

摘要翻译： 本发明的目的是提供一种能够提高旋转性能，抑制摩擦转矩并降低电动机的功率消耗的流体动力轴承型旋转装置，以及包括其的记录和再现装置。 具有一端的凸缘和另一端的毂的轴设置有可旋转的套筒的轴承。 套筒包括一个连通孔。 轮毂和套筒端面之间的第三间隙是流动路径，并连接到连通孔。 假设推力板4和凸缘3之间的第一间隙为S 1，则凸缘3与套筒1的下端面之间的第二间隙为S 2，套筒上端表面之间的第三间隙 1，集线器7为S 3，间隙的宽度满足关系式S 3>（S 1 + S 2）。