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公开(公告)号：US20140063653A1
公开(公告)日：2014-03-06
申请号：US13767194
申请日：2013-02-14
Applicant: NIDEC CORPORATION
Inventor： Shintaro SAEKI , Atsushi YAWATA
CPC classification number: G11B19/2009 , H02K5/15 , H02K7/085
Abstract: A motor includes a stator and a rotor including a disk portion, a cylindrical portion, and a stopper. The stopper includes a stopper protruding portion and is fixed to an inner surface of the cylindrical portion. The cylindrical portion includes a cylindrical portion protruding portion that opposes an outer surface of the stopper. Adhesive is included between the cylindrical portion and the stopper. A gap between an upper end portion of the outer surface of the stopper and an inner peripheral surface of the cylindrical portion protruding portion defines a first tapered gap. A gap between a lower end portion of the outer surface of the stopper and an inner peripheral surface of the cylindrical portion defines a second tapered gap. The adhesive is included in the first tapered gap and the second tapered gap. The stator includes an annular or substantially annular surface below the second tapered gap.
Abstract translation: 电动机包括定子和包括盘部分，圆筒部分和止动器的转子。 止动件包括止动器突出部分并且固定到圆柱形部分的内表面。 圆筒部包括与止动件的外表面相对的圆筒部突出部。 粘合剂包括在圆柱形部分和塞子之间。 止动件的外表面的上端部与圆筒部突出部的内周面之间的间隙限定第一锥形间隙。 止动件的外表面的下端部与圆筒部的内周面之间的间隙形成第二锥形间隙。 粘合剂包括在第一锥形间隙和第二锥形间隙中。 定子包括在第二锥形间隙下方的环形或基本环形的表面。
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公开(公告)号：US20190165637A1
公开(公告)日：2019-05-30
申请号：US16174289
申请日：2018-10-30
Applicant: NIDEC CORPORATION
Inventor： Atsushi YAWATA
Abstract: A hollow shaft includes a hollow portion extending in an axial direction from an opening that is open at one end of the hollow shaft in the axial direction. The hollow shaft further includes a first communicating hole establishing radial communication between the hollow portion and an axial space between an upper lubricating oil and a lower lubricating oil. The hollow shaft further includes a second communicating hole establishing radial communication between the hollow portion and an unsealed space inside the motor. The unsealed space is connected to an external space outside the motor. The hollow shaft further includes a sealing member closing the opening. The hollow shaft has, in an inner peripheral surface facing the hollow portion, a recess recessed radially outward. A part of the sealing member is fitted into the recess.
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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
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。
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公开(公告)号：US20140203691A1
公开(公告)日：2014-07-24
申请号：US14220506
申请日：2014-03-20
Applicant: Nidec Corporation
Inventor： Takuro MATSUMOTO , Atsushi YAWATA
IPC: H02K5/16
CPC classification number: H02K5/16 , G11B19/2009 , H02K1/187 , H02K3/522
Abstract: A motor for use in a disk drive apparatus includes a bearing, a rotary unit, a stator, a thin flat base member, and a cylindrical holder extending in an axial direction. The base member includes a first through-hole, a peripheral edge portion, and a thin portion. The thin portion is located radially outward of the peripheral edge portion. The thin portion has an axial thickness smaller than an axial thickness of the peripheral edge portion. The holder includes a first protrusion portion and a second protrusion portion. The first protrusion portion extends radially outward and is located axially above the peripheral edge portion. The second protrusion portion extends radially outward and is located axially below the peripheral edge portion. The bearing is located inside the holder. A stator core is located radially outside the holder and axially above the thin portion.
Abstract translation: 用于盘驱动装置的电动机包括轴承，旋转单元，定子，薄平底座构件和沿轴向方向延伸的圆柱形保持架。 基部构件包括第一通孔，周缘部和薄部。 薄壁部分位于周边边缘部分的径向外侧。 薄壁部的轴向厚度比周缘部的轴向厚度小。 保持器包括第一突出部分和第二突出部分。 第一突出部分径向向外延伸并且位于周边边缘部分的轴向上方。 第二突出部分径向向外延伸并且位于周边边缘部分的轴向下方。 轴承位于支架内。 定子芯位于保持器的径向外侧并且在薄部分上方轴向地定位。
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5.发明申请公开(公告)号：US20160163349A1
公开(公告)日：2016-06-09
申请号：US14863764
申请日：2015-09-24
Applicant: Nidec Corporation
Inventor： Atsushi YAWATA , Shigeki HORIKI , Ryohei MATSUMOTO
CPC classification number: G11B19/2009 , B23K26/0093 , B23K26/03 , B23K26/351 , B23K26/352 , B23K2101/34 , B23K2101/36 , B23K2103/04 , B23K2103/10 , H02K15/03
Abstract: A method of manufacturing a base unit of a spindle motor includes the steps of: defining a base plate including a support fitting portion; fitting a support to a hole portion passing through the support fitting portion; measuring an inclination of the support fitting portion; calculating a laser irradiation area and a laser irradiation output based on the inclination; irradiating the support fitting portion with a laser beam; and measuring the inclination of the support fitting portion again. The base plate is made of a metal, and is defined by press working, casting, or forging. The support is fitted to the hole portion by crimping, press fitting, or welding. This method reduces the inclination of the support fitting portion, thereby reducing a distortion of the support, which serves as a rotation center of an access portion.
Abstract translation: 主轴电动机的基座的制造方法包括以下步骤：限定包括支撑配合部的基板; 将支撑件装配到穿过所述支撑配合部分的孔部分; 测量所述支撑配件部分的倾斜度; 基于倾斜度计算激光照射区域和激光照射输出; 用激光束照射支撑配件部分; 并再次测量支撑配件部分的倾斜度。 基板由金属制成，通过冲压加工，铸造或锻造定义。 支撑通过压接，压配或焊接装配到孔部分。 该方法减小了支撑配合部的倾斜度，从而减小了作为进入部的旋转中心的支撑的变形。
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Patent Agency Ranking
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
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。
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公开(公告)号：US20130229727A1
公开(公告)日：2013-09-05
申请号：US13767228
申请日：2013-02-14
Applicant: NIDEC CORPORATION
Inventor： Shintaro SAEKI , Atsushi YAWATA
IPC: H02K5/22
CPC classification number: H02K5/225 , H02K3/522 , H02K2211/03
Abstract: A spindle motor includes a stationary unit, a rotary unit and a bearing mechanism. The stationary unit includes a base member, a stator including a plurality of coils and a wiring substrate electrically connected to the stator. The base member includes a tubular portion, a first accommodation portion, an opening portion, a plurality of coil accommodation portions, a second accommodation portion, and at least one through-hole. The wiring substrate includes an arc portion and an extension portion. A lead wire is led out from at least one of the coils and is connected to the arc portion by soldering within the through-hole.
Abstract translation: 主轴电机包括固定单元，旋转单元和轴承机构。 固定单元包括基座构件，包括多个线圈的定子和与定子电连接的布线基板。 基部构件包括管状部分，第一容纳部分，开口部分，多个线圈容纳部分，第二容纳部分和至少一个通孔。 布线基板包括弧形部分和延伸部分。 引线从至少一个线圈引出，并通过焊接在通孔内连接到弧形部分。
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公开(公告)号：US20130050874A1
公开(公告)日：2013-02-28
申请号：US13662615
申请日：2012-10-29
Applicant: Nidec Corporation
Inventor： Atsushi YAWATA , Yasuhiro SUZUKI , Shintaro SAEKI , Takehito TAMAOKA
CPC classification number: H02K5/225 , H02K7/085 , H02K2211/03
Abstract: A spindle motor includes a stator unit and a rotor unit supported to be rotatable with respect to the stator unit. The stator unit includes a stator, a base portion including a through hole, and a circuit board. The circuit board includes a connection portion to which a conductive wire from the stator is connected after passing through the through hole. A lower surface of the base portion includes a central region, a peripheral region, a recess portion, and a protrusion. A position of a distal portion of the protrusion is provided at a level higher than a level of a lowermost surface region of the central region and lower than a level of a bottom surface of the recess portion in a direction parallel or substantially parallel to a central axis.
Abstract translation: 主轴电动机包括定子单元和被支撑为可相对于定子单元旋转的转子单元。 定子单元包括定子，包括通孔的基部和电路板。 电路板包括连接部分，在通过通孔之后，来自定子的导线被连接到该连接部分。 基部的下表面包括中心区域，周边区域，凹部和突起。 突出部的远端部分的位置设置在高于中心区域的最下表面区域的高度的水平面上，并且在平行于或基本上平行于中心区域的方向上低于凹部的底面的高度 轴。
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公开(公告)号：US20200301131A1
公开(公告)日：2020-09-24
申请号：US16785683
申请日：2020-02-10
Applicant: Nidec Corporation
Inventor： Atsushi YAWATA
Abstract: A motor includes a stationary unit and a rotation unit. The rotation unit includes a rotor hub, an annular body, and a clamp. The rotor hub is mounted with a first magnet opposite to the stator. The annular body is supported on an outer circumferential portion of the rotor hub. The clamp is directly or indirectly fixed to the rotor hub farther radially inside than the annular body, and presses the annular body to an axially lower side. The rotor hub includes a flange that expands radially outside from at least a portion excluding an upper end portion. On a surface of the clamp, a pattern to be detected to detect rotation of the rotation unit positioned in a circumferential direction with the central axis as the center is provided. The annular body is sandwiched between the flange and the clamp in an axial direction.
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10.发明申请BEARING MECHANISM, SPINDLE MOTOR INCLUDING THE BEARING MECHANISM AND ELECTRONIC EQUIPMENT INCLUDING THE SPINDLE MOTOR 有权轴承机构，主轴电机，包括轴承机构和电子设备，包括主轴电机公开(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
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。
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