利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN104411988A 流体动压轴承装置以及具备该流体动压轴承装置的电动机 有权

  • 专利标题： 流体动压轴承装置以及具备该流体动压轴承装置的电动机
  • 专利标题（英）： Fluid dynamic bearing device and motor with same
  • 申请号： CN201380031745.8
    申请日： 2013-05-22
  • 公开(公告)号： CN104411988A
    公开(公告)日： 2015-03-11
  • 发明人: 小松原慎治 , 栗村哲弥
  • 申请人： NTN株式会社
  • 申请人地址： 日本大阪
  • 专利权人： NTN株式会社
  • 当前专利权人： NTN株式会社
  • 当前专利权人地址： 日本大阪
  • 代理机构： 中科专利商标代理有限责任公司
  • 代理商 刘影娜
  • 优先权： 2012-136834 2012.06.18 JP
  • 国际申请： PCT/JP2013/064178 2013.05.22
  • 国际公布： WO2013/190942 JA 2013.12.27
  • 进入国家日期： 2014-12-16
  • 主分类号： F16C17/10
  • IPC分类号： F16C17/10 ;  F16C33/74 ;  H02K7/08
流体动压轴承装置以及具备该流体动压轴承装置的电动机
摘要：
一种流体动压轴承装置(1)，具备：旋转侧的轴承部件(22)，其由多孔质材料形成；静止侧的壳体(7)，其将轴承部件(22)收容于内周；密封部件(9)，其使轴承部件(22)的上侧经由密封间隙(S)向大气开放；径向轴承间隙，其形成在轴承部件(22)的外周面(22a)与壳体(7)的内周面(7a2)之间；推力轴承间隙，其形成在轴承部件(22)的下端面(22c)与壳体7的内底面(7b1)之间，径向轴承间隙以及推力轴承间隙被润滑油(11)充满，通过形成于两轴承间隙的油膜在径向方向以及推力方向上对轴承部件(22)进行支承，在轴承部件(22)的上端面(22b)与同其对置的密封部件(9)的下端面(9b)之间夹设有含有空气的轴向间隙(10)。
摘要（英）：

A fluid dynamic bearing device (1) is provided with: a rotation-side bearing member (22) consisting of a porous material; a stationary-side housing (7) having the bearing member (22) received at the inner periphery thereof; a seal member (9) for opening the upper side of the bearing member (22) to the atmosphere through a seal gap (S); a radial bearing gap formed between the outer peripheral surface (22a) of the bearing member (22) and the inner peripheral surface (7a2) of the housing (7); and a thrust bearing gap formed between the lower end surface (22c) of the bearing member (22) and the inner bottom surface (7b1) of the housing (7). The radial bearing gap and the thrust bearing gap are filled with lubricating oil (11), and oil films formed in both bearing gaps support the bearing member (22) in the radial direction and in the thrust direction. An axial gap (10) which contains air is disposed between the upper end surface (22b) of the bearing member (22) and the lower end surface (9b) of the seal member (9), the lower end surface (9b) facing the upper end surface (22b).

公开/授权文献
0/0