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公开(公告)号：US20170025145A1
公开(公告)日：2017-01-26
申请号：US15180249
申请日：2016-06-13
Applicant: Nidec Corporation
Inventor： Masahiro SHIRAISHI
CPC classification number: G11B19/2009 , F16C2370/12 , G11B19/2036 , H02K5/124 , H02K5/1677 , H02K15/14 , H02K21/22
Abstract: A motor may include a bearing mechanism including a shaft arranged along a center axis, a sealing member has one-end closed cylindrical shape and a recess receiving a lower portion of the bearing mechanism, a stationary portion including a base defining a part of the housing, and a rotary portion rotating relative to the stationary portion about the center axis. The base has a through hole defined therein so as to have a center aligned with the center axis and pass through the base in an axial direction. The sealing member is fixed in a fixing region defined between an outer circumferential portion of the sealing member and an inner circumferential portion that defines the through hole in the base. The fixing region includes a sealing region where a clearance between the sealing member and the base is closed.
Abstract translation: 马达可以包括：轴承机构，其包括沿着中心轴布置的轴，密封构件具有一端封闭的圆柱形形状，以及容纳轴承机构的下部的凹部;固定部分，包括限定壳体的一部分的基部 以及围绕中心轴线相对于静止部分旋转的旋转部分。 基部具有限定在其中的通孔，以使其具有与中心轴对准的中心并沿轴向穿过基部。 密封构件固定在限定在密封构件的外周部分和限定基部中的通孔的内周部分之间的固定区域中。 固定区域包括密封构件和基座之间的间隙关闭的密封区域。
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公开(公告)号：US20150070798A1
公开(公告)日：2015-03-12
申请号：US14459467
申请日：2014-08-14
Applicant: Nidec Corporation
Inventor： Masahiro SHIRAISHI , Tsuchitsugu WATANABE , Yoichi SEKII
CPC classification number: F16C33/72 , F16C17/107 , F16C33/726 , F16C33/74 , F16C33/741 , F16C33/743 , F16C33/745 , F16C2370/12 , G11B19/2036 , H02K7/08 , H02K7/085
Abstract: A spindle motor is configured to rotate a disk in a case defined by a base plate and a top cover arranged to cover an upper side of the base plate. The spindle motor includes a fluid dynamic bearing including a lubricant oil. A rotating portion body of the spindle motor includes an air hole. An upper opening of the air hole is in communication with an annular space between the top cover and the rotating portion body. A lower opening of the air hole is in communication with a gap between a stator and a magnet. Accordingly, even if a gas including the lubricant oil vaporized through a liquid surface of the lubricant oil leaks into the annular space, at least a portion of the gas including the lubricant oil flows into the air hole.
Abstract translation: 主轴电动机构造成在由基板和布置成覆盖基板的上侧的顶盖限定的壳体内旋转盘。 主轴电机包括含有润滑油的流体动力轴承。 主轴电动机的旋转部分主体包括气孔。 空气孔的上开口与顶盖和旋转部分主体之间的环形空间连通。 空气孔的下开口与定子和磁体之间的间隙连通。 因此，即使包含通过润滑油的液面蒸发的润滑油的气体泄漏到环状空间中，至少包含润滑油的气体的一部分流入气孔。
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公开(公告)号：US20150036475A1
公开(公告)日：2015-02-05
申请号：US14339529
申请日：2014-07-24
Applicant: NIDEC CORPORATION
Inventor： Masahiro SHIRAISHI , Tsuchitsugu WATANABE
CPC classification number: G11B19/2036 , F16C17/107 , F16C33/745 , F16C2370/12 , G11B19/2009 , H02K3/46 , H02K5/04 , H02K5/225
Abstract: A spindle motor includes a stationary portion and a rotating portion. The stationary portion includes a base member, a stator core, coils, and a circuit board. The base member includes a middle region, a peripheral region, jetty portions, a recessed portion, and at least one through hole. The jetty portions are positioned at least axially below the peripheral region, and include a pair of extension portions. The recessed portion is arranged inside the jetty portions, and a portion of the circuit board is arranged in the recessed portion. The at least one through hole is arranged to pass through the middle region in an axial direction. The recessed portion is covered with a sealant.
Abstract translation: 主轴电动机包括固定部分和旋转部分。 固定部分包括基体，定子芯，线圈和电路板。 基部构件包括中间区域，周边区域，码头部分，凹部和至少一个通孔。 码头部分至少位于周边区域的下方，并且包括一对延伸部分。 凹部设置在码头部内部，电路基板的一部分配置在凹部内。 所述至少一个通孔布置成在轴向方向上穿过所述中间区域。 凹部被密封剂覆盖。
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公开(公告)号：US20170287520A1
公开(公告)日：2017-10-05
申请号：US15628886
申请日：2017-06-21
Applicant: Nidec Corporation
Inventor： Katsuya TAKAHASHI , Masahiro SHIRAISHI
IPC: G11B19/20
CPC classification number: G11B19/2009 , F16C17/107 , F16C33/1005 , F16C33/723 , F16C33/74 , F16C2370/12 , H02K5/10 , H02K5/15 , H02K5/1677
Abstract: A motor includes a rotating portion including a rotor magnet, and arranged to rotate about a central axis extending in a vertical direction; a bearing mechanism arranged to support the rotating portion such that the rotating portion is rotatable about the central axis; a stator portion arranged opposite to the rotor magnet; a housing arranged to accommodate the rotating portion, the bearing mechanism, and the stator portion therein; and a sealing member. The housing includes a base portion substantially in a shape of a plate and arranged to extend radially below the rotating portion. The base portion includes a first lower surface arranged to face downward, and a through hole arranged to pass through the base portion in the vertical direction and arranged to have a portion of the bearing mechanism arranged therein. The sealing member is arranged to cover a lower side of the through hole, and includes at least a metal layer.
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公开(公告)号：US20160267937A1
公开(公告)日：2016-09-15
申请号：US15046760
申请日：2016-02-18
Applicant: Nidec Corporation
Inventor： Katsuya TAKAHASHI , Masahiro SHIRAISHI
CPC classification number: G11B19/2009 , F16C17/107 , F16C33/1005 , F16C33/723 , F16C33/74 , F16C2370/12 , H02K5/10 , H02K5/15 , H02K5/1677
Abstract: A motor includes a rotating portion including a rotor magnet, and arranged to rotate about a central axis extending in a vertical direction; a bearing mechanism arranged to support the rotating portion such that the rotating portion is rotatable about the central axis; a stator portion arranged opposite to the rotor magnet; a housing arranged to accommodate the rotating portion, the bearing mechanism, and the stator portion therein; and a sealing member. The housing includes a base portion substantially in a shape of a plate and arranged to extend radially below the rotating portion. The base portion includes a first lower surface arranged to face downward, and a through hole arranged to pass through the base portion in the vertical direction and arranged to have a portion of the bearing mechanism arranged therein. The sealing member is arranged to cover a lower side of the through hole, and includes at least a metal layer.
Abstract translation: 马达包括：旋转部分，其包括转子磁体，并且布置成绕垂直方向延伸的中心轴旋转; 轴承机构，其布置成支撑所述旋转部分，使得所述旋转部分可围绕所述中心轴线旋转; 与转子磁体相对配置的定子部; 壳体，其布置成容纳旋转部分，轴承机构和定子部分; 和密封构件。 壳体包括基本上为板状的基部，并且设置成径向地在旋转部分下方延伸。 基部包括面向下的第一下表面和布置成在垂直方向上穿过基部的通孔，并且布置成具有布置在其中的轴承机构的一部分。 密封构件被布置成覆盖通孔的下侧，并且至少包括金属层。
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Patent Agency Ranking
公开(公告)号：US20150055248A1
公开(公告)日：2015-02-26
申请号：US14458465
申请日：2014-08-13
Applicant: Nidec Corporation
Inventor： Katsuya TAKAHASHI , Yuki TAJIMA , Kazuhiro SATO , Yuya SAITO , Hironori ANDO , Masahiro SHIRAISHI
CPC classification number: G11B19/2009 , G11B17/0284 , G11B17/0287 , G11B17/038
Abstract: A spindle motor includes a recording disk and a clamper. A cylindrical portion includes a first screw portion positioned in an outer circumferential portion of the cylindrical portion. The clamper includes an annular raised portion configured to be fitted in a through hole of the recording disk. An inner circumferential portion of the clamper includes a second screw portion configured to be screwed to the first screw portion. At least a portion of the second screw portion is positioned in an inner circumferential portion of the annular raised portion. Each of the first screw portion and the second screw portion includes at least one of a screw groove and a screw thread. An axial position of at least a portion of the second screw portion overlaps with an axial position of the recording disk.
Abstract translation: 主轴电机包括记录盘和夹持器。 圆筒部包括位于圆筒部的外周部的第一螺纹部。 夹持器包括构造成装配在记录盘的通孔中的环形凸起部分。 夹持器的内圆周部分包括构造成螺纹连接到第一螺纹部分的第二螺纹部分。 所述第二螺纹部的至少一部分位于所述环状隆起部的内周部。 第一螺纹部分和第二螺纹部分中的每一个包括螺纹槽和螺纹中的至少一个。 第二螺纹部分的至少一部分的轴向位置与记录盘的轴向位置重叠。
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公开(公告)号：US20150036241A1
公开(公告)日：2015-02-05
申请号：US14335444
申请日：2014-07-18
Applicant: Nidec Corporation
Inventor： Masahiro SHIRAISHI , Tsuchitsugu WATANABE
CPC classification number: G11B19/2036 , F16C17/107 , F16C33/745 , F16C2370/12 , G11B19/2009 , H02K3/46 , H02K5/04 , H02K5/225
Abstract: A first capillary seal portion is positioned on a radially outer side of a bearing portion. A second capillary seal portion is positioned higher in an axial direction than the bearing portion and further on radially inner side than the first capillary seal portion. A seal cap covers a portion of an opening of the first capillary seal portion and a portion of an opening of the second capillary seal portion. The maximum width of a first gap between the outer circumferential surface of the shaft and an inner circumferential surface of the seal cap in a radial direction and the maximum width of a second gap between an upper surface of the sleeve portion and a lower surface of the seal cap in an axial direction is smaller than the maximum width of the opening of the first capillary seal portion.
Abstract translation: 第一毛细管密封部分位于轴承部分的径向外侧。 第二毛细管密封部分在轴向方向上比轴承部分更高，并且在第一毛细管密封部分的径向内侧。 密封帽覆盖第一毛细管密封部分的开口的一部分和第二毛细管密封部分的开口的一部分。 轴的外周面与密封帽的径向外周面之间的第一间隙的最大宽度以及套筒部的上表面与下侧面之间的第二间隙的最大宽度 密封帽沿轴向小于第一毛细管密封部分的开口的最大宽度。
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公开(公告)号：US20140042844A1
公开(公告)日：2014-02-13
申请号：US13780447
申请日：2013-02-28
Applicant: NIDEC CORPORATION
Inventor： Kazuhiro SATO , Masahiro SHIRAISHI , Takayuki ISHINO , Akihiro YUDATE
IPC: H02K5/22
CPC classification number: H02K5/225 , G11B19/2009 , H02K3/50
Abstract: A base member of a spindle motor includes a base through-hole and a base groove portion. The base through-hole extends through a bottom portion of the base member. The base groove portion is arranged on a lower surface of the base member to extend radially outward from the lower end portion of the base through-hole. A first insulating sheet portion is fixed to a bottom surface of the base groove portion by an adhesive agent or sticky material. Lead wires extending from coils are led out into the base groove portion through the base through-hole. The lead wires extend outward along a lower surface of the first insulating sheet portion. The lead wires are soldered to land portions of a circuit substrate at an outer side of the bottom portion. A portion of the first insulating sheet portion overlaps with a lower opening of the base through-hole in plan view.
Abstract translation: 主轴电动机的基座部件具有底座贯通孔和基部槽部。 基底通孔延伸穿过底座部件的底部。 基部槽部配置在基体的下表面上，从基底通孔的下端部向径向外侧延伸。 第一绝缘片部分通过粘合剂或粘性材料固定在基底槽部分的底面上。 从线圈延伸的导线通过基底通孔引出到基部槽部。 引线沿着第一绝缘片部分的下表面向外延伸。 引线在底部的外侧被焊接到电路基板的接地部分。 第一绝缘片部分的一部分在平面图中与基底通孔的下开口重叠。
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公开(公告)号：US20250132627A1
公开(公告)日：2025-04-24
申请号：US18915883
申请日：2024-10-15
Applicant: NIDEC CORPORATION
Inventor： Mitsuhiro TAKEMOTO , Kenji FUKAMI , Masahiro SHIRAISHI
Abstract: A motor includes a rotor rotatable about a central axis extending in an axial direction, a stator including coil assemblies arranged in a circumferential direction, and a bus bar assembly including a bus bar to electrically connect end portions of the coil assemblies to each other. A rotor recessed portion recessed in the axial direction is defined in the rotor, and at least a portion of the bus bar is accommodated in the rotor recessed portion.
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公开(公告)号：US20240364153A1
公开(公告)日：2024-10-31
申请号：US18641966
申请日：2024-04-22
Applicant: Nidec Corporation
Inventor： Shintaro SAEKI , Masahiro SHIRAISHI
IPC: H02K1/18 , H02K1/2791 , H02K9/22
CPC classification number: H02K1/187 , H02K1/2791 , H02K9/223 , H02K9/227
Abstract: A motor includes a heat dissipation portion located in one axial direction from a coil portion located on a stator core of a magnetic body. The heat dissipation portion is separate from a bracket, and is held by a stator holder of the bracket. The heat dissipation portion includes an annular portion having an annular shape surrounding the stator holder and being located on a radially outer surface of the stator holder. An extension extends radially outward from the annular portion.
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