公开(公告)号：US20150084463A1

公开(公告)日：2015-03-26

申请号：US14458437

申请日：2014-08-13

Applicant: Nidec Corporation

Inventor： Hirotoshi UCHIBORI ,  Toshihiro AKIYAMA ,  Atsushi YAWATA

IPC: H02K7/08 ,  F16C33/74

CPC classification number: F16C33/745 ,  F16C2370/12 ,  H02K5/1677 ,  H02K7/08

Abstract: A bearing mechanism includes a stationary portion and a rotating portion. The stationary portion includes a shaft portion and a plate portion. The rotating portion includes a sleeve including an annular portion, a cylindrical portion, an annular bottom surface, and a first communication hole. The rotating portion includes a ring member arranged to cover at least a portion of an opening of the first communication hole, and faces the plate portion via a first gap. A pumping groove array is disposed in the plate portion or the ring member. A second communication hole is disposed between the ring member and the annular bottom surface, and connected to the first communication hole. At least a portion of the opening of the second communication hole is positioned on a farther radial direction inner side than the pumping groove array.

Abstract translation: 轴承机构包括固定部分和旋转部分。 固定部包括轴部和板部。 旋转部分包括一个包括一个环形部分，一个圆柱形部分，一个环形底面和一个第一连通孔的套筒。 旋转部分包括环形构件，其被布置成覆盖第一连通孔的开口的至少一部分，并且经由第一间隙面对板部。 泵浦槽阵列设置在板部分或环形构件中。 第二连通孔设置在环形构件和环形底面之间，并连接到第一连通孔。 第二连通孔的开口的至少一部分位于比泵送槽阵列更远的径向内侧。

公开(公告)号：US20150085398A1

公开(公告)日：2015-03-26

申请号：US14458426

申请日：2014-08-13

Applicant: Nidec Corporation

Inventor： Atsushi YAWATA ,  Hirotoshi UCHIBORI ,  Toshihiro AKIYAMA

IPC: H02K7/08 ,  G11B19/20

CPC classification number: G11B19/20 ,  F16C17/026 ,  F16C17/107 ,  F16C33/107 ,  G11B19/2009 ,  G11B19/2036

Abstract: A spindle motor includes a stationary portion with a shaft, a circular plate portion, a wall portion, and a plate portion. The plate portion has a flat plate portion and an annular convex portion. The sleeve includes an annular portion, an outer side cylindrical portion, and an inner side cylindrical portion. The inner side cylindrical portion and an upper radial dynamic pressure groove array are superimposed in a radial direction. The upper radial dynamic pressure groove array includes a plurality of upper spiral grooves that is inclined in one direction with respect to an axial direction and a plurality of lower spiral grooves that is inclined in another direction opposite to the one direction. A lower end of the upper spiral grooves is positioned farther on an upper side than an upper surface of the annular portion.

Abstract translation: 主轴电动机包括具有轴的固定部分，圆板部分，壁部分和板部分。 板部具有平板部和环状凸部。 套筒包括环形部分，外侧圆柱形部分和内侧圆柱形部分。 内径圆筒部和上径向动压槽阵列沿径向重叠。 上径向动压槽阵列包括相对于轴向在一个方向上倾斜的多个上螺旋槽和沿与该一个方向相反的另一方向倾斜的多个下螺旋槽。 上螺旋槽的下端位于比环形部的上表面更上侧的位置。

公开(公告)号：US20140153132A1

公开(公告)日：2014-06-05

申请号：US14169511

申请日：2014-01-31

Applicant: Nidec Corporation

Inventor： Kazuhiro SATO ,  Masahiro SHIRAISHI ,  Takayuki ISHINO ,  Akihiro YUDATE ,  Takuro MATSUMOTO ,  Toshihiro AKIYAMA

IPC: H02K5/22 ,  G11B19/20

CPC classification number: H02K5/225 ,  G11B19/2009 ,  H02K3/50 ,  H02K2203/06 ,  H02K2211/03

Abstract: A base member of a motor includes a base through-hole extending through a bottom portion thereof. Two or more lead wires extending from coils pass through the base through-hole. Thus, as compared with a case where the lead wires pass through different base through-holes respectively, it is possible to reduce the number of the base through-holes. Accordingly, it is possible to minimize or prevent a reduction in the rigidity of the base member. Insulating sheet portions are arranged on the lower and upper surfaces of the base member. Each insulating sheet portion includes an overhang portion which overlaps with the base through-hole when seen in a plan view. The lead wires extending from the coils are led out toward the lower surface of the base member through holes, cutouts, or slits defined in the overhang portion. This makes it possible to easily distinguish the led-out lead wires from each other.

Abstract translation: 马达的基座部件包括延伸穿过其底部的基底通孔。 从线圈延伸的两根或多根导线穿过基座通孔。 因此，与引线分别穿过不同的基底通孔的情况相比，可以减少基底通孔的数量。 因此，可以最小化或防止基体的刚性降低。 绝缘片部分布置在基底构件的下表面和上表面上。 每个绝缘片部分包括当在平面图中观察时与基部通孔重叠的突出部分。 从线圈延伸的引线通过限定在突出部分中的孔，切口或狭缝引导到基部构件的下表面。 这使得可以容易地将引出线彼此区分开。

公开(公告)号：US20150138670A1

公开(公告)日：2015-05-21

申请号：US14607375

申请日：2015-01-28

Applicant: Nidec Corporation

Inventor： Kazuhiro SATO ,  Masahiro SHIRAISHI ,  Takayuki ISHINO ,  Akihiro YUDATE ,  Takuro MATSUMOTO ,  Toshihiro AKIYAMA

IPC: H02K3/38 ,  H02K3/28 ,  G11B19/20

CPC classification number: G11B19/2009 ,  H02K3/50 ,  H02K5/225 ,  H02K2203/06 ,  H02K2211/03

Abstract: A base member includes a base through-hole which interconnects an upper opening and a lower opening. An insulating sheet portion is disposed at a lower surface side of the base member. The insulating sheet portion covers at least a portion of the lower opening. Lead wires extending from coils extend to the lower surface side of the base member through the base through-hole. The lead wires extend radially outward along a lower surface of the insulating sheet portion while making contact with the insulating sheet portion. The lead wires are soldered to land portions of a circuit substrate. The lower opening is covered with a sealing material. The circuit substrate includes a first region. The insulating sheet portion is defined by a smaller number of layers than the first region.

Abstract translation: 基部构件包括将上部开口和下部开口相互连接的基部通孔。 绝缘片部分设置在基底构件的下表面侧。 绝缘片部分覆盖下开口的至少一部分。 从线圈延伸的引线通过基底通孔延伸到基底构件的下表面侧。 引线沿着绝缘片部分的下表面径向向外延伸，同时与绝缘片部分接触。 引线被焊接到电路基板的接地部分。 下部开口用密封材料覆盖。 电路基板包括第一区域。 绝缘片部分由比第一区域更少的层数限定。

公开(公告)号：US20140009852A1

公开(公告)日：2014-01-09

申请号：US13770355

申请日：2013-02-19

Applicant: NIDEC CORPORATION

Inventor： Takuro MATSUMOTO ,  Toshihiro AKIYAMA ,  Atsushi YAWATA

IPC: G11B19/20 ,  H02K5/00

CPC classification number: G11B19/2009 ,  H02K1/187 ,  H02K3/522 ,  H02K5/00 ,  H02K5/225 ,  H02K2203/03

Abstract: A base unit includes a stator and a base member including a first recess portion, a second recess portion, and at least one through-hole. The first recess portion is arranged on an upper surface of the base member to surround the hole portion and depressed toward the lower surface thereof. The second recess portion is arranged radially outward of the first recess portion and depressed toward a lower surface thereof. The through-hole is arranged inside the first recess portion to extend through the base member. The second recess portion includes a protrusion portion and a third recess portion. The protrusion portion protrudes from the lower surface of the base member toward the upper surface of the base member. The third recess portion is depressed from the lower surface of the base member toward the upper surface of the base member and positioned at the opposite side from the protrusion portion.

Abstract translation: 基座单元包括定子和包括第一凹部，第二凹部和至少一个通孔的基部构件。 第一凹部被布置在基部构件的上表面上，以围绕孔部分并朝向其下表面压下。 第二凹部配置在第一凹部的径向外侧，朝向下表面凹陷。 通孔布置在第一凹部内，以延伸穿过基底构件。 第二凹部包括突出部和第三凹部。 突出部从基部构件的下表面向基部构件的上表面突出。 第三凹部从基部构件的下表面向基部构件的上表面压下并且位于与突出部相反的一侧。

公开(公告)号：US20220416603A1

公开(公告)日：2022-12-29

申请号：US17844789

申请日：2022-06-21

Applicant: Nidec Corporation

Inventor： Ryo MIYOSHI ,  Kazuhiro SATO ,  Toshihiro AKIYAMA

IPC: H02K1/30 ,  H02K7/08 ,  H02K21/22 ,  G11B19/20

Abstract: A rotor includes a rotor hub including a through-hole to which the shaft is fixed. An upper end and a lower end of an opposing region where an outer peripheral surface of the shaft and an inner peripheral surface of the through-hole oppose each other in a radial direction are respectively provided with an upper gap portion and a lower gap portion opposing each other through a space in the radial direction. The upper gap portion and the lower gap portion each include a bottom portion extending in a direction intersecting the center axis and a peripheral wall portion connected to a radial outer edge of the bottom portion and extending along the center axis.