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公开(公告)号：US20200309140A1
公开(公告)日：2020-10-01
申请号：US16787276
申请日：2020-02-11
Applicant: Nidec Corporation
Inventor： Kazuhiko FUKUSHIMA , Takehito TAMAOKA
Abstract: A gas dynamic bearing includes a shaft extending along a central axis extending vertically, and a sleeve with a hole opening at least at one end of the sleeve in an axial direction, at least a portion of the shaft housed inside the hole. The sleeve includes dynamic pressure grooves in an inner peripheral surface of the hole. The shaft includes a core portion, and a protective portion that is disposed on an outer peripheral surface of the core portion and that includes at least a portion facing the inner peripheral surface of the hole in a radial direction. The protective portion includes a first protective portion and a second protective portion. The first protective portion is at least above or below the second protective portion in the axial direction, and includes at least a portion with a thickness in the radial direction more than a thickness of the second protective portion in the radial direction.
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公开(公告)号：US20190264695A1
公开(公告)日：2019-08-29
申请号：US16267569
申请日：2019-02-05
Applicant: Nidec Corporation
Inventor： Tomoyuki TSUKAMOTO , Kazuhiko FUKUSHIMA
Abstract: A centrifugal fan includes a motor, a support body, a rotating body, and a housing. The motor includes a rotor hub that rotates around a central axis extending up and down. The support body is fixed to the rotor hub and rotates together with the rotor hub. The rotating body is different from the support body in material and is a continuous porous body. The housing accommodates the rotating body, the support body, and the motor. The housing includes an air inlet open in an axial direction and at least one air outlet open in a radial direction. A radially inner surface of the rotating body opposes a radially outer surface of the rotor hub with a gap interposed therebetween. The rotating body is fixed to the support body to be replaceable.
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公开(公告)号：US20190195236A1
公开(公告)日：2019-06-27
申请号：US16224941
申请日：2018-12-19
Applicant: Nidec Corporation
Inventor： Tomoyuki TSUKAMOTO , Takehito TAMAOKA , Kazuhiko FUKUSHIMA , Koji HATANAKA
IPC: F04D29/28 , H01L23/467 , H01L23/427
CPC classification number: F04D29/282 , H01L23/427 , H01L23/467
Abstract: In an air blower, an exhaust extends in a first direction that is a radial component of an impeller, and includes fins. Assuming that a distance from a line segment extending from a central axis in the first direction to an array of the fins upstream of an airflow caused by rotation of the impeller is a first predetermined distance, at least a portion of the fins are disposed in a first region upstream from the first predetermined distance and in a second region downstream from the first predetermined distance. The distance between the fins in the first region is shorter than the distance between the fins in the second region.
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公开(公告)号：US20150108861A1
公开(公告)日：2015-04-23
申请号：US14587099
申请日：2014-12-31
Applicant: NIDEC CORPORATION
Inventor： Yoichi SEKII , Takehito TAMAOKA , Kazuhiro SATO , Kazuhiko FUKUSHIMA , Hiroyuki ABE
CPC classification number: H02K5/22 , G11B25/043 , H02K1/146 , H02K3/44 , H02K3/522 , H02K5/00 , H02K5/225 , H02K2203/03 , H02K2213/03
Abstract: A motor includes a stationary unit and a rotary unit. The stationary unit includes a stator, a base portion having at least one hole extending in the up-down direction, and a flexible wiring substrate. The flexible wiring substrate reaches a position higher than a lower surface of the base portion through at least one hole and is arranged to supply electric power to the stator. The flexible wiring substrate includes a connection portion arranged higher than the lower surface of the base portion and connected to the stator. The connection portion includes a solder portion arranged on a lower surface thereof to cover a portion of a lead wire extending from a coil of the stator. At least a portion of the solder portion is positioned within the hole.
Abstract translation: 电动机包括固定单元和旋转单元。 固定单元包括定子，具有沿上下方向延伸的至少一个孔的基部和柔性布线基板。 柔性布线基板通过至少一个孔到达比基部的下表面高的位置，并且被布置成向定子提供电力。 柔性布线基板包括布置成高于基部的下表面并连接到定子的连接部分。 连接部分包括布置在其下表面上的焊料部分以覆盖从定子的线圈延伸的引线的一部分。 焊料部分的至少一部分位于孔内。
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公开(公告)号：US20130300234A1
公开(公告)日：2013-11-14
申请号：US13946108
申请日：2013-07-19
Applicant: NIDEC CORPORATION
Inventor： Yoichi SEKII , Takehito TAMAOKA , Kazuhiro SATO , Kazuhiko FUKUSHIMA , Hiroyuki ABE
IPC: H02K5/00
CPC classification number: H02K5/22 , G11B25/043 , H02K1/146 , H02K3/44 , H02K3/522 , H02K5/00 , H02K5/225 , H02K2203/03 , H02K2213/03
Abstract: A motor includes a stationary unit and a rotary unit. The stationary unit includes a stator, a base portion having at least one hole, and a flexible wiring substrate. The flexible wiring substrate reaches a position higher than a lower surface of the base portion through at least one hole and is arranged to supply electric power to the stator. The flexible wiring substrate includes a connection portion arranged higher than the lower surface of the base portion and connected to the stator. The connection portion includes a solder portion arranged on a lower surface thereof to cover a portion of a lead wire extending from a coil of the stator. At least a portion of the solder portion is positioned within the hole.
Abstract translation: 电动机包括固定单元和旋转单元。 固定单元包括定子，具有至少一个孔的基部和柔性布线基板。 柔性布线基板通过至少一个孔到达比基部的下表面高的位置，并且被布置成向定子提供电力。 柔性布线基板包括布置成高于基部的下表面并连接到定子的连接部分。 连接部分包括布置在其下表面上的焊料部分以覆盖从定子的线圈延伸的引线的一部分。 焊料部分的至少一部分位于孔内。
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Patent Agency Ranking
公开(公告)号：US20200309191A1
公开(公告)日：2020-10-01
申请号：US16787439
申请日：2020-02-11
Applicant: Nidec Corporation
Inventor： Kazuhiko FUKUSHIMA , Takehito TAMAOKA
Abstract: A rotating-side magnet has a tubular shape extending in an axial direction and has different magnetic poles in the axial direction. A fixed-side magnet has a tubular shape extending in the axial direction, opposes the rotating-side magnet with a gap in the radial direction, and has magnetic poles radially different from the magnetic poles of the rotating-side magnet. Fixed-side auxiliary members each of which is made of a ferromagnetic material are provided at both axial ends of the fixed-side magnet.
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公开(公告)号：US20200309139A1
公开(公告)日：2020-10-01
申请号：US16787066
申请日：2020-02-11
Applicant: Nidec Corporation
Inventor： Kazuhiko FUKUSHIMA , Takehito TAMAOKA
Abstract: A gas dynamic pressure bearing includes a shaft centered on a central axis extending in an up-down direction, and a sleeve that faces at least a portion of the shaft in a radial direction. The portion in which the sleeve and the shaft face each other in the radial direction includes a first dynamic pressure portion at each of both ends in the axial direction, and a second dynamic pressure portion between the first dynamic pressure portions. In the first dynamic pressure portion, one of the sleeve and the shaft includes dynamic pressure grooves arranged in a circumferential direction. A sum of center angles of groove widths of the dynamic pressure grooves in a cross-section cut along a plane orthogonal to the central axis is about 144° or more and about 216° or less.
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公开(公告)号：US20200177035A1
公开(公告)日：2020-06-04
申请号：US16669640
申请日：2019-10-31
Applicant: Nidec Corporation
Inventor： Kazuhiko FUKUSHIMA
IPC: H02K1/20 , F04D29/52 , F04D19/00 , F04D25/06 , H02K1/18 , H02K7/08 , H02K7/14 , H02K11/33 , H02K21/22
Abstract: A motor includes a rotor rotatable about a center axis that extends vertically, a stator opposing the rotor in a radial direction, and a base portion opposing a lower surface of the stator in an axial direction. The base portion includes a lower lid portion extending in a direction orthogonal or substantially orthogonal to the center axis, a protruding portion protruding in the axial direction from an upper surface at a center of the lower lid portion, and a stator holding portion adjacent to the protruding portion in the axial direction and contactable with an inner circumferential surface of the stator. The protruding portion includes a first ventilation portion opening downward at the center of the lower lid portion and a second ventilation portion to cause the protruding portion to communicate with the first ventilation portion.
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公开(公告)号：US20190264697A1
公开(公告)日：2019-08-29
申请号：US16267577
申请日：2019-02-05
Applicant: Nidec Corporation
Inventor： Tomoyuki TSUKAMOTO , Kazuhiko FUKUSHIMA
Abstract: A centrifugal fan includes a motor, a support body, a rotating body, and a housing. The motor includes a rotor hub that rotates around a central axis extending up and down. The support body is fixed to and rotates together with the rotor hub. The rotating body is different from the support body in material. The rotating body is a continuous porous body. The housing accommodates the rotating body, the support body, and the motor. The housing includes a first air inlet open in an axial direction and at least one air outlet open in a radial direction. A radially inner surface of the rotating body opposes a radially outer surface of the rotor hub with a gap interposed therebetween. The rotating body is fixed to at least one of an axially upper surface and an axially lower surface of the support body.
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公开(公告)号：US20190264696A1
公开(公告)日：2019-08-29
申请号：US16267572
申请日：2019-02-05
Applicant: Nidec Corporation
Inventor： Tomoyuki TSUKAMOTO , Kazuhiko FUKUSHIMA
Abstract: A centrifugal fan includes a motor, a support body, first and second rotating bodies, and a housing. The motor includes a rotor hub. The support body is fixed to and rotates together with the rotor hub. The first and second rotating bodies are continuous porous bodies and are different in material than the support body. The first rotating body is located on an axially upper surface of the support body. The second rotating body is located on an axially lower surface of the support body. The housing accommodates the first and second rotating bodies, the support body, and the motor. The housing includes a first air inlet and an air outlet. A radially inner surface of the first rotating body opposes a radially outer surface of the rotor hub with a gap interposed therebetween.
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