公开(公告)号：US20070196035A1

公开(公告)日：2007-08-23

申请号：US10567686

申请日：2004-09-21

申请人： Katsuo Shibahara ,  Ryouichi Nakajima ,  Kenji Ito

发明人： Katsuo Shibahara ,  Ryouichi Nakajima ,  Kenji Ito

IPC分类号： F16C32/06

CPC分类号： F16C17/107 ,  F16C33/104 ,  F16C33/107

摘要： The invention is aimed at further reducing the cost of a dynamic pressure bearing unit. In a shaft member 2, a shaft portion 2a is disposed with the outer circumferential surface thereof facing the inner circumferential surface of a bearing sleeve across a radial bearing gap, while a flange portion 2b is disposed with both end faces 2b1 and 2b2 thereof respectively facing one end face of the bearing sleeve and a bottom face of a housing across respective thrust bearing gaps, and the shaft member 2 is supported in a thrust direction in a noncontact fashion by a dynamic pressure occurring in each bearing gap. In the shaft member 2, the core of the shaft portion 2a and the flange portion 2b are both formed from a resin member 21, while the outer circumference of the shaft portion 2a is formed from a metal member 22.

摘要翻译： 本发明旨在进一步降低动压轴承单元的成本。 在轴构件2中，设置有轴部分2a，其外周面与轴承套筒的内周面相对于径向轴承间隙设置，而凸缘部分bb设置有两个端面2b 1和 2 b 2分别面对轴承套的一个端面和横跨相应推力轴承间隙的壳体的底面，并且轴构件2以非接触的方式以推力方向被支撑在每个轴承间隙中发生的动压力 。 在轴构件2中，轴部2a的芯部和凸缘部分bb都由树脂构件21形成，而轴部2a的外周由金属构件22形成。