公开(公告)号：US08824097B2

公开(公告)日：2014-09-02

申请号：US14208003

申请日：2014-03-13

Applicant: Nidec Corporation

Inventor： Shuji Iwasaki ,  Yoichi Sekii ,  Takehito Tamaoka ,  Hideki Nishimura ,  Kazuto Miyajima ,  Takuro Iguchi ,  Kazuhiro Sato ,  Takeyuki Shuto

IPC: G11B17/02

CPC classification number: H02K1/27 ,  F16C17/107 ,  F16C33/103 ,  F16C33/107 ,  F16C33/745 ,  F16C2226/12 ,  F16C2226/40 ,  F16C2226/60 ,  F16C2370/12 ,  G11B19/2036 ,  H02K5/1677 ,  H02K7/086 ,  H02K2201/03

Abstract: A motor includes a shaft component, an upper plate portion, a lower plate portion, and a sleeve portion. The shaft component includes an inner shaft portion and an outer shaft portion. The sleeve portion is disposed between the upper plate portion and the lower plate portion. A radial gap is defined between the sleeve portion and the outer shaft portion. A fixing range in which the outer shaft portion and the inner shaft portion radially overlap is provided. At least a portion in an axial direction of the fixing range radially overlaps with an existing range in the axial direction of the radial gap.

Abstract translation: 电动机包括轴部件，上板部分，下板部分和套筒部分。 轴部件包括内轴部分和外轴部分。 套筒部分设置在上板部分和下板部分之间。 径向间隙限定在套筒部分和外轴部分之间。 提供外轴部和内轴部径向重叠的固定范围。 固定范围的轴向的至少一部分与径向间隙的轴向的现有范围径向重叠。

公开(公告)号：US20140212303A1

公开(公告)日：2014-07-31

申请号：US13942841

申请日：2013-07-16

Applicant: Nidec Corporation

Inventor： Takehito Tamaoka ,  Kazuhiko Fukushima

IPC: F04D25/06

CPC classification number: F04D25/062 ,  F04D25/0626 ,  F04D29/0513 ,  F04D29/083 ,  F04D29/104

Abstract: In a blower fan according to a preferred embodiment of the present invention, a stationary portion of a motor portion includes a stator, a bearing portion, and a holding portion to which both the stator and the bearing portion are fixed, while a rotating portion includes a central rotating portion, and an annular cup portion fixed to the central rotating portion. The central rotating portion includes a shaft, a bearing opposing portion, and a cylindrical seal portion. The cup portion includes a cylindrical cup inner wall portion fixed to an outer circumferential surface of the cylindrical seal portion, a cup top plate portion, and a cup outer wall portion. A seal portion having a surface of a lubricating oil defined therein is defined in a seal gap between an inner circumferential surface of the cylindrical seal portion and an outer circumferential surface of the bearing portion.

Abstract translation: 在根据本发明的优选实施例的鼓风机中，电动机部分的固定部分包括定子，轴承部分和固定有定子和轴承部分的保持部分，旋转部分包括 中心旋转部分和固定到中心旋转部分的环形杯部分。 中心旋转部分包括轴，轴承相对部分和圆柱形密封部分。 杯部包括固定在圆筒状密封部的外周面的圆筒状杯内壁部，杯顶板部和杯外壁部。 在圆筒形密封部的内周面与轴承部的外周面之间的密封间隙中限定具有限定在其中的润滑油的表面的密封部。

公开(公告)号：US20140199189A1

公开(公告)日：2014-07-17

申请号：US13921637

申请日：2013-06-19

Applicant: NIDEC CORPORATION

Inventor： Takehito Tamaoka ,  Kazuhiko Fukushima

IPC: F04D25/06 ,  H02K7/08 ,  F16C17/10

CPC classification number: F04D25/062 ,  F04D29/056 ,  F04D29/063 ,  F04D29/083 ,  F16C17/107 ,  F16C33/107 ,  F16C33/1075 ,  F16C33/745 ,  H02K5/1675

Abstract: A bearing apparatus according to a preferred embodiment of the present invention includes a bearing portion having a bottom and being substantially cylindrical; a shaft inserted in the bearing portion, and arranged to rotate about a central axis relative to the bearing portion; a bearing opposing portion defined in one piece, arranged above the bearing portion, and arranged to hold an upper end portion of the shaft while covering an outer circumferential surface upper portion and an upper end surface of the shaft; and a cylindrical seal portion arranged to extend downward from the bearing opposing portion. An inner circumferential surface of the cylindrical seal portion and an outer circumferential surface of the bearing portion are arranged to together define a seal gap therebetween, the seal gap including a seal portion having a surface of a lubricating oil defined therein.

Abstract translation: 根据本发明的优选实施例的轴承装置包括具有底部并且基本上圆柱形的轴承部分; 轴，其插入在所述轴承部分中并且布置成围绕中心轴线相对于所述轴承部分旋转; 轴承对置部分，其一体地限定在轴承部分的上方，并且被布置成在覆盖轴的外周面上部和上端面的同时保持轴的上端部; 以及设置成从所述支承相对部分向下延伸的圆柱形密封部分。 圆筒形密封部分的内圆周表面和轴承部分的外圆周表面布置成一起限定了它们之间的密封间隙，密封间隙包括具有限定在其中的润滑油表面的密封部分。