公开(公告)号：US20140104727A1

公开(公告)日：2014-04-17

申请号：US14053649

申请日：2013-10-15

申请人： SEIKO INSTRUMENTS INC.

发明人： Akihiro IINO ,  Akio OZAWA

IPC分类号： G11B5/54 ,  F16C33/58 ,  F16C43/04

CPC分类号： G11B5/54 ,  F16C19/184 ,  F16C33/416 ,  F16C33/58 ,  F16C33/581 ,  F16C35/063 ,  F16C43/04 ,  F16C2226/40 ,  F16C2229/00 ,  F16C2370/12 ,  G11B5/4813 ,  G11B5/5569

摘要： A first inner ring and a second inner ring respectively include inner ring rolling surfaces formed so that the external radius of inner end portions is smaller than a first separation distance and formed so as to have an external radius that become larger than the first separation distance, and a first outer ring and a second outer ring respectively include outer ring rolling surfaces formed so that the internal radius of outer end portions is larger than a second separation distance and formed so as to have an internal radius that becomes smaller than the second separation distance, and the first outer ring and the second outer ring are formed integrally with each other to form an outer ring.

摘要翻译： 第一内圈和第二内圈分别包括形成为使得内端部的外半径小于第一间隔距离并形成为具有大于第一间隔距离的外径的内环滚动面， 并且第一外圈和第二外圈分别包括形成为使得外端部的内半径大于第二间隔距离的外圈滚动面，并且形成为具有小于第二间隔距离的内半径 并且第一外圈和第二外圈彼此一体地形成以形成外圈。