公开(公告)号：US20140010065A1

公开(公告)日：2014-01-09

申请号：US14024868

申请日：2013-09-12

Applicant: Nidec Corporation

Inventor： Akihiro KIMURA ,  Teiichi HIRONO ,  Kunio SAKURADA ,  Kyoko HORISE

IPC: G11B19/20 ,  F16C32/06 ,  H02K7/08

CPC classification number: F16C32/0659 ,  F16C17/10 ,  F16C17/107 ,  F16C33/107 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2009 ,  G11B19/2036 ,  H02K5/1675 ,  H02K7/08 ,  H02K7/085

Abstract: A bearing apparatus includes a first cup portion defining a portion of a stationary portion of a bearing apparatus includes a first circular plate portion and a first cylindrical portion projecting downward from an outer edge portion of the first circular plate portion. A rotating portion of the bearing apparatus includes an annular recessed portion arranged to accommodate at least a lower end portion of the first cylindrical portion. The stationary portion includes a second cup portion including a second circular plate portion arranged to extend radially outward from an outer circumferential surface of a stationary shaft below the first cup portion and a second cylindrical portion arranged to project upward from an outer edge portion of the second circular plate portion. One of the first and second cup portions is integral with the stationary shaft defining a single monolithic member, and the other is fixed to the stationary shaft.

Abstract translation: 轴承装置包括限定轴承装置的固定部分的一部分的第一杯部分包括第一圆板部分和从第一圆板部分的外边缘部分向下突出的第一圆柱部分。 轴承装置的旋转部分包括设置成容纳第一圆筒部分的至少下端部的环形凹部。 固定部分包括第二杯部分，其包括第二圆板部分，第二圆形板部分布置成从第一杯部分下方的固定轴的外圆周表面径向向外延伸;以及第二圆柱部分，其布置成从第二杯部分的外边缘部分向上突出 圆板部分。 第一杯部分和第二杯部分中的一个与限定单个整体构件的固定轴成一体，另一个固定到固定轴。

公开(公告)号：US20130077190A1

公开(公告)日：2013-03-28

申请号：US13681500

申请日：2012-11-20

Applicant: Nidec Corporation

Inventor： Akihiro KIMURA ,  Teiichi HIRONO ,  Kunio SAKURADA ,  Kyoko HORISE

IPC: G11B19/20 ,  H02K7/08

CPC classification number: F16C32/0659 ,  F16C17/10 ,  F16C17/107 ,  F16C33/107 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2009 ,  G11B19/2036 ,  H02K5/1675 ,  H02K7/08 ,  H02K7/085

Abstract: A bearing apparatus includes stationary and rotating portions. The stationary portion includes a stationary shaft and a first cup portion. The rotating portion includes an annular recessed portion and first and second inner circumferential surfaces. Lubricating oil is arranged in a gap between the stationary and rotating portions. An upper surface of the lubricating oil is located between the second inner circumferential surface and an outer circumferential surface of the first cup portion. A lower surface of the lubricating oil is located between the rotating and stationary portions. The rotating portion further includes a through hole filled with the lubricating oil. One of the first cup portion and the rotating portion includes a pumping groove array arranged thereon to cause the lubricating oil to flow toward one end of the through hole during rotation of the rotating portion.

Abstract translation: 轴承装置包括固定和旋转部分。 固定部分包括固定轴和第一杯部分。 旋转部分包括环形凹部和第一和第二内圆周表面。 润滑油布置在固定部分和旋转部分之间的间隙中。 润滑油的上表面位于第二内周面和第一杯部的外周面之间。 润滑油的下表面位于旋转和静止部分之间。 旋转部分还包括填充有润滑油的通孔。 第一杯部分和旋转部分中的一个包括布置在其上的泵送槽阵列，以在旋转部分的旋转期间使润滑油朝向通孔的一端流动。