公开(公告)号：US20140078617A1

公开(公告)日：2014-03-20

申请号：US13790089

申请日：2013-03-08

Applicant: NIDEC CORPORATION

Inventor： Yoichi SEKII ,  Hiroshi KONNO ,  Chiharu FUJII

IPC: F16C17/10 ,  G11B19/20 ,  H02K7/08

CPC classification number: F16C17/107 ,  F16C33/1085 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2009 ,  H02K7/08

Abstract: A bearing apparatus includes an upper annular portion that has a circular or substantially circular ring shape, and is arranged to project radially outward from a stationary shaft. One of an upper surface of a sleeve and a lower surface of the upper annular portion includes a first pumping groove array arranged to send a lubricating oil radially inward. The sleeve includes a second inner circumferential surface arranged radially outside of the upper annular portion. One of a lower surface of a cap, an upper surface of the upper annular portion, the second inner circumferential surface, and an outer circumferential surface of the upper annular portion includes a second pumping groove array arranged to send the lubricating oil radially outward or axially downward.

Abstract translation: 轴承装置包括具有圆形或大致圆形环形的上部环形部分，并且被布置成从固定轴径向向外突出。 套筒的上表面和上环形部分的下表面之一包括布置成径向向内地发送润滑油的第一泵送槽阵列。 套筒包括设置在上部环形部分的径向外侧的第二内圆周表面。 帽的下表面之一，上环形部分的上表面，第二内圆周表面和上环形部分的外圆周表面包括第二泵槽阵列，其布置成沿径向向外或轴向地将润滑油 向下。

公开(公告)号：US20140078879A1

公开(公告)日：2014-03-20

申请号：US13789796

申请日：2013-03-08

Applicant: NIDEC CORPORATION

Inventor： Yoichi SEKII ,  Hiroshi KONNO ,  Chiharu FUJII ,  Takuro IGUCHI ,  Shuji IWASAKI

IPC: F16C17/10 ,  G11B19/20 ,  H02K5/16

CPC classification number: F16C17/107 ,  F16C33/1085 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2036 ,  H02K5/165 ,  H02K5/1677

Abstract: A bearing apparatus includes a stationary shaft, an upper annular portion, a lower annular portion, and a sleeve. An outer circumferential surface of the upper annular portion includes a cylindrical surface and an inclined surface arranged above the cylindrical surface. The cylindrical surface has an axial length smaller than that of the inclined surface of the upper annular portion. One of an upper surface of the sleeve and a lower surface of the upper annular portion includes a pumping groove array defined therein. An upper surface of a lubricating oil is defined in an upper capillary seal portion, while a lower surface of the lubricating oil is defined in a lower capillary seal portion. The upper capillary seal portion has an opening angle larger than that of the lower capillary seal portion.

Abstract translation: 轴承装置包括固定轴，上环形部分，下环形部分和套筒。 上环形部分的外圆周表面包括圆柱形表面和布置在圆柱形表面上方的倾斜表面。 圆柱形表面的轴向长度小于上部环形部分的倾斜表面的轴向长度。 套筒的上表面和上环形部分的下表面之一包括限定在其中的泵浦槽阵列。 润滑油的上表面限定在上毛细管密封部分中，而润滑油的下表面限定在下毛细密封部分中。 上部毛细管密封部分具有比下部毛细管密封部分大的开启角度。