WO2013058032A1 - アウターロータ型モータ - Google Patents
アウターロータ型モータ Download PDFInfo
- Publication number
- WO2013058032A1 WO2013058032A1 PCT/JP2012/073036 JP2012073036W WO2013058032A1 WO 2013058032 A1 WO2013058032 A1 WO 2013058032A1 JP 2012073036 W JP2012073036 W JP 2012073036W WO 2013058032 A1 WO2013058032 A1 WO 2013058032A1
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- WIPO (PCT)
- Prior art keywords
- terminal
- coil
- phase
- terminal block
- input terminal
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/525—Annular coils, e.g. for cores of the claw-pole type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/145—Stator cores with salient poles having an annular coil, e.g. of the claw-pole type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
- H02K37/10—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type
Definitions
- the present invention relates to an outer rotor type motor used in, for example, automobiles, industrial equipment, office equipment and the like.
- the rotor including a permanent magnet provided to face the pole teeth of the stator yoke rotates by switching the direction of current flowing in the coil provided in the stator unit.
- the coil is connected to the motor board for control such as switching the current direction.
- a magnet wire is wound around the stator core in a direction parallel to the axial direction (winding so that the core direction is perpendicular to the axial direction), and the coil winding start and winding end The coil ends are both pulled out in the axial direction and connected to the drive circuit.
- the stator unit of the inner rotor type PM stepping motor is formed by winding a magnet wire around a coil bobbin provided on the outer periphery of the pole teeth of the stator yoke, and connecting the inner and outer coil ends via the winding part of the motor case. It was pulled out to the space on the outer peripheral side of the stator and connected to the wiring board (see Patent Document 1).
- the bobbin shape is enlarged without using a wiring board to hold one end of the terminal pin, and the winding start and end of the magnet wire wound around the bobbin are connected to each other, and each terminal pin is pulled out in the axial direction to the other end side.
- An inner rotor type PM stepping motor has also been proposed (see Patent Document 2).
- bobbin with a through-hole that penetrates through the flange at the core part of the bobbin, and a coil wound around it is aligned so that the through-holes communicate with each other and stacked in multiple stages
- the terminal rod fitted in the through hole is entangled with the coil lead drawn in the guide groove of the outward flange portion to supply power (see Patent Document 3).
- JP 2002-78268 A Japanese Patent Laid-Open No. 5-64411 Japanese Patent Laid-Open No. 9-74731
- the outer rotor type PM stepping motor has the advantage that it can generate a large torque when compared with the inner rotor type PM stepping motor, but the coil lead must be wired inside the motor. A sufficient space for wiring the coil leads cannot be secured.
- Patent Document 1 since a circuit board for power feeding is used, parts of the circuit board itself are bulky, and the circuit board is arranged in a direction perpendicular to the rotor shaft, so that an outer rotor type motor is used. It is not possible to adopt. Further, when the outer diameter of the bobbin of Patent Document 2 is expanded outward, the distance until the coil lead winding start end and winding end end are connected to the terminal pins is increased, and the coil lead routing is linear. Therefore, the work is not suitable for manual layout and assembly. In addition, since the coil lead is pulled out in a direction perpendicular to the rotor shaft, it cannot be employed in an outer rotor type motor.
- the present invention has been made to solve these problems, and the object of the present invention is to reduce the coil lead wiring work and connection work without reducing the coil space factor and miniaturizing the coil.
- the object is to provide an realized outer rotor type motor.
- the present invention comprises the following arrangement.
- a stator in which a stator unit in which an air-core coil around which a magnet wire is wound is sandwiched between stator yokes having comb-shaped pole teeth formed around a bearing portion is stacked in a concentric manner, and the bearing
- a rotor shaft that is inserted into a portion, a rotor having a permanent magnet having a magnetic pole facing the pole teeth, and a rotor yoke that is rotatably supported around the rotor shaft;
- a drive circuit terminal block in which a drive signal input terminal, an interphase connection terminal, and an external input terminal of a drive circuit that drives a motor by energizing a coil are integrally formed on a terminal block body, and an outer rotor type motor,
- One end of a coil lead drawn from the same-phase coil of each stator unit in which a plurality of in-phase stator units are divided and stacked passes through a gap between pole teeth of the stator unit and protrudes
- the drive signal input terminal and the external input terminal to which the other ends of the coil leads respectively connected to the interphase terminal portions connected in series and connected to each other in series are connected to the terminal block main body Each of them is connected by wiring.
- the drive circuit terminal block in which the drive signal input terminal, the interphase connection terminal, and the external input terminal of the drive circuit for driving the motor are integrally formed on the terminal block body is used, so that a wiring board is unnecessary.
- the wiring connection of the coil lead drawn from each coil can be performed linearly, and the wiring in the terminal block body can be omitted. Therefore, it is possible to contribute to assembly automation while reducing the motor size.
- the drive circuit terminal block is formed by insert molding a lead frame in which the interphase connection terminal, the drive signal input terminal, and the external input terminal are continuously formed at a connection portion, and the connection portion is cut. It is preferable that the terminal protrudes from the terminal block body.
- the terminal block main body can be manufactured by insert molding using a lead frame, and the terminal portion to which the coil lead is connected can be formed by simply cutting the connecting portion, so that it is inexpensive and can be mass-produced.
- a suitable outer rotor type motor can be provided.
- the drive circuit terminal block can be used as a motor mounting plate and a heat dissipation plate. Can be used.
- a heat-dissipating resin for example, a resin mixed with aluminum nitride, ceramic powder or the like as a filler
- stator unit It is a top view of a lead frame. It is a perspective top view of the drive circuit terminal block after molding. It is a top view of the drive circuit terminal block after excising a connection part. It is a top view of the drive circuit terminal block concerning other examples.
- the outer rotor type motor according to the present embodiment includes a plurality of stator units formed by sandwiching a coil in which a stator is wound in an air core shape with a stator yoke having comb-shaped pole teeth (claw poles).
- a claw pole type two-phase stepping motor laminated concentrically will be described as an example.
- a rotor 1 is provided with permanent magnets 2 magnetized alternately NS in the circumferential direction on the inner peripheral surface of a cylindrical rotor yoke 3.
- the permanent magnet 2 is provided so as to face pole teeth (claw poles) of a stator yoke described later.
- a rotor hub is provided at the bottom of the rotor yoke 3 formed in a bottomed cylindrical shape, and a rotor shaft is integrally connected to the rotor hub by press-fitting, shrink fitting or the like.
- the stator 4 includes a plurality of stator units 7a to 7d concentrically formed by sandwiching a coil 5 in which a magnet wire is wound in an air core shape between a pair of stator yokes 6a and 6b (in this embodiment, (4 levels) are stacked.
- the A-phase coil and the B-phase coil whose phases are different by 180 degrees in electrical angle are, for example, AABB, ABAB, or ABBB- It is laminated so as to be A.
- a cylindrical bearing housing 8 that passes through the rotor shaft is inserted into the center of the stator units 7a to 7d, and is integrally assembled to the drive circuit terminal block 9.
- a cylindrical spacer and a bearing (bearing) are fitted concentrically in the bearing housing 8, and the rotor shaft is fitted through the cylindrical hole and is assembled by being prevented from being detached by a retaining washer.
- the periphery of the stator units 7a to 7d may be molded with a molding resin.
- the drive circuit terminal block 9 includes interphase connection terminals 10a and 10b, drive signal input terminals 10c and 10d, and external input terminals 10e and 10f of a drive circuit that drives the motor by energizing the A-phase and B-phase coils.
- the terminal block body 9a is integrally formed.
- the coil lead 11, the drive signal input terminal 10c, and the drive signal input terminal 10d of each phase coil 5 are respectively connected by wiring.
- the drive signal terminal 10c is wired to the external input terminal 10e
- the drive signal input terminal 10d is wired to the external input terminal 10f.
- the coil 5 (A One end (outer peripheral end or inner peripheral end) coil lead 11 drawn out from the phase) is connected to the drive signal input terminal 10c, and one end drawn out from the coil 5 (A 'phase) of the second stage stator unit 7b.
- the side (outer peripheral end or inner peripheral end) coil lead 11 is connected to the drive signal input terminal 10d (see the one-dot chain line in FIG. 1).
- the other end (inner peripheral end or outer peripheral end) coil lead 11 drawn from the coil 5 of the first stage stator unit 7a is connected to the interphase connection terminal 10a, and the coil of the second stage stator unit 7b.
- the other end side (inner peripheral end or outer peripheral end) coil lead 11 drawn out from 5 is connected to the interphase connection terminal 10a (see the one-dot chain line in FIG. 1).
- the drive circuit terminal block 9 in which the interphase connection terminals 10a and 10b and the drive signal input terminals 10c and 10d of the drive circuit for driving the motor are integrally formed on the terminal block body 9a is used.
- a substrate is not necessary, and the wiring connection of the coil lead 11 drawn from each coil 5 can be linearly wired, and the wiring length can be omitted. Therefore, it is possible to contribute to assembly automation while reducing the motor size.
- the drive circuit terminal block 9 can also be used as an external mounting plate.
- a lead frame 10 is used in which drive signal input terminals 10c and 10d connected to interphase connection terminals 10a and 10b and external input terminals 10e and 10f of the drive circuit are continuously formed at a connecting portion 10g. .
- the lead frame 10 is insert-molded, and a terminal block body 9a including the bearing housing 8 is integrally molded as shown in FIG.
- the connecting portion 10g is cut, and interphase connection terminals 10a and 10b, drive signal input terminals 10c and 10d, and external input terminals 10e and 10f are projected from the terminal base body 9a as shown in FIG.
- the drive signal input terminal 10c and the external input terminal 10e are connected by wiring
- the drive signal input terminal 10d and the external input terminal 10f are connected by wiring.
- the interphase connection terminals 10a and 10a for example, for A phase-A 'phase connection
- the interphase connection terminals 10b and 10b for example, for B phase-B' phase connection
- the drive circuit terminal block 9 can be manufactured by performing insert molding using the lead frame 10, and each terminal to which the coil lead 11 is connected only needs to cut the connecting portion 10g, so that it is inexpensive.
- an outer rotor type motor suitable for mass production can be provided.
- the drive circuit terminal block 9 can be used as a motor mounting plate and a heat dissipating plate. Can be used.
- a heat dissipating resin for example, a resin mixed with aluminum nitride, ceramic powder or the like as a filler
- the flange portion 9b may be formed as shown in FIG. Thereby, when using the terminal block main body 9a as a motor attachment plate, it can be used as an attachment hole.
- the coil lead 11 connected to the interphase connection terminals 10a and 10b may be either the A phase or the B phase, and the positions of the input terminals of the drive signal input terminals 10c and 10d and the external input terminals 10e and 10f are switched. It may be.
- the claw pole type two-phase stepping motor is illustrated, but the present invention is not limited to this, and the three-phase, four-phase,. It is also possible to apply to a multiphase stepping (brushless) motor such as a phase.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
また、特許文献2のボビン外径を外側に拡大した構造であると、コイルリードの巻き始め端部及び巻き終わり端部を端子ピンと各々接続するまでの距離が長くなりコイルリードの引き回しが直線的でないため、作業が手間取り組立自動化には向いていない。また、コイルリードを回転子軸と直交する方向に引き出すため、アウターロータ型のモータでは採用できない。
また、特許文献3の端子棒は回転子軸と平行にボビンを貫通して嵌め込まれるため、貫通孔への端子棒の圧入代を考慮するとアウターロータ型モータが大型化する。また、各ボビンに巻き回されたコイルから引き出されるコイルリードをフランジ部の案内溝を通じて端子棒に絡めるまで距離が長く、引き回し作業は直線的でないため組立自動化が困難である。
マグネットワイヤーを巻いた空芯コイルを、軸受部の周囲で櫛歯状の極歯が形成された固定子ヨークにより挟み込んだ固定子ユニットが同芯状に複数段積層される固定子と、前記軸受部に挿入される回転子軸と、前記極歯に対向する磁極が形成された永久磁石を有し前記回転子軸を中心に回転可能に支持された回転子ヨークを備えた回転子と、前記コイルに通電してモータを駆動する駆動回路の駆動信号入力端子及び相間接続端子並びに外部入力端子が端子台本体に一体成形された駆動回路端子台と、を備えたアウターロータ型モータであって、同相の固定子ユニットが複数分割されて積層される各固定子ユニットの前記同相のコイルから引き出されたコイルリードの一端が前記固定子ユニットの極歯の隙間を通過して前記端子台本体に突設された前記相間端子部に各々接続されて互いに直列に接続され、各相コイルから引き出されたコイルリードの他端が各々接続される前記駆動信号入力端子と前記外部入力端子とが前記端子台本体内で各々配線接続されていることを特徴とする。
上記構成によれば、モータを駆動する駆動回路の駆動信号入力端子及び相間接続端子並びに外部入力端子が端子台本体に一体成形された駆動回路端子台用いているので、配線用基板は不要であり、各コイルより引き出されたコイルリードの配線接続も直線的に行うことができ、しかも端子台本体内の配線を省略することができる。よって、モータ体格を小型化したまま組立自動化に寄与することができる。
これにより、端子台本体をリードフレームを用いたインサート成形により製造することができ、しかもコイルリードを接続する端子部は連結部を切断するだけで形成することができるため、安価でかつ大量生産に適したアウターロータ型モータを提供することができる。
これにより、リードフレーム10を用いたインサート成形をおこなうことにより駆動回路端子台9を製造することができ、しかもコイルリード11を接続する各端子は連結部10gを切断するだけで足りるため、安価でかつ大量生産に適したアウターロータ型モータを提供することができる。
上述した実施例では、クローポール型の2相ステッピングモータについて例示したが、これに限定されるものではなく、軸方向の長さが長くなるが低振動を実現した3相、4相、…n相などの多相ステッピング(ブラシレス)モータに適用することも可能である。
Claims (3)
- マグネットワイヤーを巻いた空芯コイルを、軸受部の周囲で櫛歯状の極歯が形成された固定子ヨークにより挟み込んだ固定子ユニットが同芯状に複数段積層される固定子と、前記軸受部に挿入される回転子軸と、前記極歯に対向する磁極が形成された永久磁石を有し前記回転子軸を中心に回転可能に支持された回転子ヨークを備えた回転子と、前記コイルに通電してモータを駆動する駆動回路の駆動信号入力端子及び相間接続端子並びに外部入力端子が端子台本体に一体成形された駆動回路端子台と、を備えたアウターロータ型モータであって、
同相の固定子ユニットが複数分割されて積層される各固定子ユニットの前記同相のコイルから引き出されたコイルリードの一端が前記固定子ユニットの極歯の隙間を通過して前記端子台本体に突設された前記相間端子部に各々接続されて互いに直列に接続され、各相コイルから引き出されたコイルリードの他端が各々接続される前記駆動信号入力端子と前記外部入力端子とが前記端子台本体内で各々配線接続されていることを特徴とするアウターロータ型モータ。 - 前記駆動回路端子台は、前記相間接続端子と前記駆動信号入力端子と前記外部入力端子が連結部にて連続して形成されたリードフレームがインサート成形されて前記連結部が切断されて各端子が前記端子台本体より突設されている請求項1記載のアウターロータ型モータ。
- 前記端子台本体を形成するモールド樹脂として放熱性樹脂が用いられる請求項1又は2記載のアウターロータ型モータ。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12841176.6A EP2773025B1 (en) | 2011-10-17 | 2012-09-10 | Outer rotor type motor |
US14/342,310 US9484783B2 (en) | 2011-10-17 | 2012-09-10 | Outer rotor type motor |
CN201280049659.5A CN103875163B (zh) | 2011-10-17 | 2012-09-10 | 外转子型马达 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011228085A JP5554763B2 (ja) | 2011-10-17 | 2011-10-17 | アウターロータ型モータ |
JP2011-228085 | 2011-10-17 |
Publications (1)
Publication Number | Publication Date |
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WO2013058032A1 true WO2013058032A1 (ja) | 2013-04-25 |
Family
ID=48140688
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2012/073036 WO2013058032A1 (ja) | 2011-10-17 | 2012-09-10 | アウターロータ型モータ |
Country Status (5)
Country | Link |
---|---|
US (1) | US9484783B2 (ja) |
EP (1) | EP2773025B1 (ja) |
JP (1) | JP5554763B2 (ja) |
CN (1) | CN103875163B (ja) |
WO (1) | WO2013058032A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6334581B2 (ja) * | 2016-01-27 | 2018-05-30 | 株式会社東海理化電機製作所 | インシュレータ |
US11037590B2 (en) | 2018-07-19 | 2021-06-15 | Western Digital Technologies, Inc. | In-pivot hybrid stepper motor for ball screw cam elevator mechanism for reduced-head hard disk drive |
US11410694B2 (en) | 2018-07-19 | 2022-08-09 | Western Digital Technologies, Inc. | Axial flux permanent magnet motor for ball screw cam elevator mechanism for reduced-head hard disk drive |
US10902871B2 (en) * | 2018-07-19 | 2021-01-26 | Western Digital Technologies, Inc. | Low-profile ball screw cam elevator mechanism for cold storage data storage device |
US10978100B1 (en) | 2018-07-19 | 2021-04-13 | Western Digital Technologies, Inc. | Belt-driven rotary cam elevator mechanism for reduced-head data storage device |
US11095197B2 (en) * | 2018-10-31 | 2021-08-17 | GM Global Technology Operations LLC | Modular stator |
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2011
- 2011-10-17 JP JP2011228085A patent/JP5554763B2/ja not_active Expired - Fee Related
-
2012
- 2012-09-10 US US14/342,310 patent/US9484783B2/en not_active Expired - Fee Related
- 2012-09-10 WO PCT/JP2012/073036 patent/WO2013058032A1/ja active Application Filing
- 2012-09-10 CN CN201280049659.5A patent/CN103875163B/zh not_active Expired - Fee Related
- 2012-09-10 EP EP12841176.6A patent/EP2773025B1/en not_active Not-in-force
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Also Published As
Publication number | Publication date |
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EP2773025B1 (en) | 2016-11-30 |
JP5554763B2 (ja) | 2014-07-23 |
US9484783B2 (en) | 2016-11-01 |
EP2773025A4 (en) | 2015-08-05 |
CN103875163A (zh) | 2014-06-18 |
US20140225463A1 (en) | 2014-08-14 |
CN103875163B (zh) | 2016-05-11 |
EP2773025A1 (en) | 2014-09-03 |
JP2013090414A (ja) | 2013-05-13 |
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