公开(公告)号：US20110299193A1

公开(公告)日：2011-12-08

申请号：US13197820

申请日：2011-08-04

申请人： Yoichi SEKII ,  Hironao SASAKI ,  Takuro IGUCHI ,  Hironori ANDO ,  Toshihiro AKIYAMA ,  Takunori SHINAO ,  Yuichi SHIGEMATSU ,  Yasutaka INO ,  Tatsuyoshi NAKATANI

发明人： Yoichi SEKII ,  Hironao SASAKI ,  Takuro IGUCHI ,  Hironori ANDO ,  Toshihiro AKIYAMA ,  Takunori SHINAO ,  Yuichi SHIGEMATSU ,  Yasutaka INO ,  Tatsuyoshi NAKATANI

IPC分类号： F16C32/06 ,  H02K7/08 ,  G11B17/02

CPC分类号： G11B19/2036 ,  F16C17/105 ,  F16C17/107 ,  F16C33/107 ,  F16C2370/12 ,  G11B17/0287

摘要： A fluid dynamic bearing mechanism includes a stationary shaft, a sleeve portion arranged to rotate with respect to the shaft, and a thrust portion including an upper end surface arranged oppose to a lower end surface of the sleeve portion. An inside surface of the thrust portion includes an inside surface contact portion arranged in contact with an outside surface of the shaft, and an inside surface lower non-contact portion spaced away from the outside surface of the shaft, and arranged to extend downward from a lower end of the inside surface contact portion. An outside surface of the thrust portion includes an outside surface inclined portion arranged in contact with an interface of a lubricating oil. The lower end of the inside surface contact portion is arranged at a level axially higher than that of a lower end of the outside surface inclined portion.

摘要翻译： 流体动力轴承机构包括固定轴，布置成相对于轴旋转的套筒部分和包括与套筒部分的下端表面相对布置的上端表面的推力部分。 推力部的内表面包括与轴的外表面接触的内表面接触部和与轴的外表面间隔开的内表面下非接触部，并且从内侧面向下延伸 内表面接触部分的下端。 推力部的外表面包括与润滑油的界面接触配置的外表面倾斜部。 内表面接触部分的下端设置在比外表面倾斜部分的下端更高的轴向上。

公开(公告)号：US20100195250A1

公开(公告)日：2010-08-05

申请号：US12765122

申请日：2010-04-22

申请人： Yoichi SEKII ,  Hironao SASAKI ,  Takuro IGUCHI ,  Hironori ANDO ,  Toshihiro AKIYAMA ,  Takunori SHINAO ,  Yuichi SHIGEMATSU

发明人： Yoichi SEKII ,  Hironao SASAKI ,  Takuro IGUCHI ,  Hironori ANDO ,  Toshihiro AKIYAMA ,  Takunori SHINAO ,  Yuichi SHIGEMATSU

IPC分类号： G11B5/60 ,  F16C32/06

CPC分类号： F16C17/107 ,  F16C17/105 ,  F16C33/107 ,  F16C33/745 ,  F16C43/02 ,  F16C2370/12 ,  G11B17/0287

摘要： A bearing mechanism includes a shaft, a sleeve portion, a thrust portion, and a cover portion. Lubricating oil is arranged in a communicating channel in the sleeve portion, a thrust gap between the sleeve portion and the thrust portion, and a tapered gap between an outside surface of the thrust portion and the cover portion. A lower end opening of the communicating channel is defined in an outer circumferential portion of a lower surface of the sleeve portion radially outward of the thrust gap. A radially outermost portion of the thrust portion is arranged either tangent to a wall surface of the communicating channel or closer to a central axis than the wall surface. The tapered gap is arranged closer to the central axis than a radially outermost point of the wall surface. The outer circumferential portion and the cover portion define a guide gap therebetween.

摘要翻译： 轴承机构包括轴，套筒部分，推力部分和盖部分。 润滑油布置在套筒部分的连通通道中，套筒部分和推力部分之间的推力间隙以及推力部分的外表面与盖部分之间的锥形间隙。 连通通道的下端开口被限定在径向向外推动间隙的套筒部分的下表面的外圆周部分中。 推力部分的径向最外部分布置成与连通通道的壁表面相切或者比壁表面更靠近中心轴线。 锥形间隙布置成比壁表面的径向最外侧更靠近中心轴线。 外周部和盖部在其间限定引导间隙。