公开(公告)号：US20130321946A1

公开(公告)日：2013-12-05

申请号：US13775475

申请日：2013-02-25

Applicant: NIDEC CORPORATION

Inventor： Akihiro KIMURA ,  Akinobu SUMIJI ,  Kunio SAKURADA ,  Daisuke FUKUOKA ,  Akihisa MORIGUCHI

IPC: F16C32/06 ,  H02K5/16

CPC classification number: F16C32/0633 ,  F16C17/107 ,  F16C33/107 ,  F16C33/1085 ,  F16C33/745 ,  F16C2370/12 ,  H02K5/165 ,  H02K5/1675

Abstract: A bearing mechanism includes a shaft portion, a sleeve portion, and an opposing portion including a surface arranged opposite to an end surface of the sleeve portion on one of upper and lower sides with a thrust gap defined therebetween. The thrust gap includes a thrust dynamic pressure bearing portion defined therein. The sleeve portion includes a sleeve body and a thrust plate fixed to an end portion of the sleeve body on the one of the upper and lower sides. The sleeve body includes an annular surface arranged opposite to the thrust plate, and an annular body projecting portion arranged to project in an axial direction inside of the annular surface. An outer circumferential surface of the body projecting portion and an inner circumferential surface of the thrust plate are arranged to be in direct or indirect contact with each other.

Abstract translation: 轴承机构包括轴部，套筒部和相对部，该相对部包括在上下两侧之一上与套筒部的端面相对配置的面，其间限定有推力间隙。 推力间隙包括限定在其中的推力动压轴承部分。 套筒部分包括一个套筒本体和一个止推板，该推力板固定在该套筒本体的上侧和下侧之一的端部上。 套筒主体包括与止推板相对布置的环形表面，以及环形体突出部分，其设置成沿着轴向在环形表面内突出。 主体突出部的外周面和止推板的内周面被布置成彼此直接或间接接触。