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WO2016171205A1 - Outer rotor type rotating electrical machine - Google Patents

Outer rotor type rotating electrical machine Download PDF

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Publication number
WO2016171205A1
WO2016171205A1 PCT/JP2016/062616 JP2016062616W WO2016171205A1 WO 2016171205 A1 WO2016171205 A1 WO 2016171205A1 JP 2016062616 W JP2016062616 W JP 2016062616W WO 2016171205 A1 WO2016171205 A1 WO 2016171205A1
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WO
WIPO (PCT)
Prior art keywords
insulator
terminal unit
electrical machine
rotating electrical
type rotating
Prior art date
Application number
PCT/JP2016/062616
Other languages
French (fr)
Japanese (ja)
Inventor
孝典 松井
美佳 坂上
Original Assignee
株式会社ミツバ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社ミツバ filed Critical 株式会社ミツバ
Priority to BR112017022426A priority Critical patent/BR112017022426B1/en
Priority to CN201680018337.2A priority patent/CN107710559B/en
Priority to JP2017514180A priority patent/JP6343394B2/en
Publication of WO2016171205A1 publication Critical patent/WO2016171205A1/en

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/46Fastening of windings on the stator or rotor structure

Definitions

  • the present invention relates to an outer rotor type rotating electrical machine.
  • This application claims priority based on Japanese Patent Application No. 2015-087051 for which it applied on April 21, 2015, and uses the content here.
  • a magnet generator having a magnet is widely used as a generator for charging a battery and supplying electric power to electrical components.
  • This type of magnet generator includes a rotor connected to a crankshaft of an engine of a motorcycle and a stator fixed to an engine case, and the stator is disposed inside the rotor.
  • the rotor includes a substantially bowl-shaped flywheel having a plurality of magnets on the inner periphery.
  • the stator includes a stator core around which a coil is wound.
  • a resin insulator is attached to the stator core.
  • the insulator is provided with a neutral point terminal of metal (for example, brass).
  • the stator core is wound with a U-phase, V-phase, and W-phase coil on an insulator.
  • the U-phase, V-phase, and W-phase coils are star-connected through neutral point terminals (see, for example, Patent Document 1).
  • the neutral point terminal is press-fitted and fixed to the insulator.
  • the U-phase, V-phase, and W-phase coils are connected to the neutral point terminal by solder.
  • the insulator may be deformed by heat generated during soldering. If the insulator is deformed, the neutral point terminal may fall off from the insulator.
  • the purpose of the embodiment of the present invention is to prevent the neutral point terminal from falling off the insulator even when the insulator is deformed by heat generated during soldering, etc.
  • the object is to provide a rotary electric machine.
  • the neutral point terminal is sandwiched between the insulator and the stator core via the fixing member. For this reason, even if the insulator is deformed by heat generated when the U-phase, V-phase, and W-phase coils are soldered to the neutral point terminal, the neutral point terminal is dropped from the insulator and the coil is disconnected. There is no.
  • One aspect of the present invention is an outer rotor type rotating electrical machine including a stator and a rotor that rotates around the stator.
  • the stator includes a stator core made of a magnetic material, an insulator attached to the stator core, and
  • the rotor includes a coil wound around a stator core via an insulator, and a terminal unit having a terminal plate to which the coil is connected.
  • the rotor rotates around the stator, and the inner peripheral surface of the flywheel.
  • the terminal unit has an insulating fixing member to which the terminal plate is fixed, and the insulator has a terminal unit holding portion in which a storage chamber for storing the terminal unit is formed.
  • the terminal unit is housed in the terminal unit holding portion of the insulator, and the fixing member is formed by the insulator and the stator core.
  • It is outer rotor type rotating electrical machine, characterized in that the lifting.
  • the first end of the fixing member of the terminal unit may contact the wall of the storage chamber of the terminal unit holding portion of the insulator, and the second end of the fixing member of the terminal unit. May contact the side wall of the stator core.
  • the wall portion of the storage chamber of the terminal unit holding portion of the insulator may be formed with a slit portion through which the terminal plate of the terminal unit is inserted, and protrudes from the insulator through the slit.
  • a coil may be connected to the coil holding portion of the terminal board.
  • a terminal plate may be press-fitted and fixed to the fixing member.
  • an outer rotor type rotating electrical machine in another aspect of the present invention, includes a stator and a rotor.
  • the stator includes a stator core made of a magnetic material, an insulator attached to the stator core, a coil wound around the stator core, and a terminal unit having a terminal plate to which the coil is connected.
  • the rotor includes a flywheel arranged to rotate with respect to the stator, and a plurality of magnets fixed to the flywheel.
  • the terminal unit has an insulating fixing member to which the terminal plate is attached.
  • the insulator has a wall arranged to cover at least a part of the fixing member.
  • FIG. 2 is a cross-sectional view taken along the line AA in FIG. It is the B section enlarged view of FIG. It is a perspective view of a fixing member. It is a perspective view of a neutral point terminal. It is a perspective view of a neutral point terminal unit.
  • a magnet generator (outer rotor type rotating electrical machine) 1 for a motorcycle will be described with reference to FIGS. 1 and 2.
  • the magnet generator 1 is used as, for example, a magnet generator in a motorcycle.
  • the magnet generator 1 has a stator 2 that is fixed to an engine case (not shown) and a rotor 3 that is fixed to the tip of an engine crankshaft (not shown).
  • the rotor 3 rotates around the stator 2 as the crankshaft rotates.
  • the rotor 3 is arranged to rotate with respect to the stator 2.
  • the rotor 3 has a substantially bowl-shaped flywheel 31 and a boss 32 fixed at the radial center of the bottom surface of the flywheel 31.
  • a plurality of magnets 33 are arranged at equal intervals in the circumferential direction.
  • the boss 32 has a cylindrical tube portion 32a and a substantially disc-shaped flange portion 32b.
  • the flange portion 32b is integrally formed with the cylindrical portion 32a.
  • the flange portion 32 b is fastened and fixed to the bottom surface of the flywheel 31 by a plurality of rivets 100.
  • a crankshaft (not shown) is fixed to the cylindrical portion 32 a of the boss 32.
  • a resin ring-shaped magnet case 34 is installed inside the bottom 31a of the flywheel 31.
  • a magnet 33 is placed on the magnet case 34.
  • a magnet holder 35 is placed on one end of the magnet 33.
  • the magnet 33 is pressed against the inner peripheral surface of the flywheel 31 by bending the magnet holder 35.
  • the magnet 33 is substantially fixed to the inner peripheral surface of the flywheel 31.
  • the magnet holder 35 is fixed by curling the opening peripheral edge 31b of the flywheel 31.
  • the stator 2 has a stator core 21 and an insulator 22 attached to the stator core 21.
  • a coil 23 is wound around the stator core 21 via an insulator 22.
  • the stator core 21 is formed by laminating magnetic material plates at least in the axial direction.
  • a hole (boss hole) 21e is formed in the center in the radial direction.
  • An engine crankshaft (not shown) is inserted through the hole 21e.
  • the crankshaft and the rotor 3 are connected to each other through a cylindrical portion 32a of the boss 32.
  • the stator core 21 has an annular ring portion 21b and a teeth portion 21c extending radially outward from the annular portion 21b.
  • a plurality of bolt holes 21 d are formed in the annular portion 21 b of the stator core 21.
  • the stator 2 is fastened and fixed to the engine case by a bolt 101 inserted into the bolt hole 21d.
  • the insulator 22 attached to the stator core 21 has a terminal unit holding part (holding part) 22b and a storage chamber 22c.
  • the terminal unit holding part 22b is formed with a slit part (slit) 22a.
  • a part of the neutral point terminal unit (terminal unit) 4 is accommodated in the accommodation chamber 22c.
  • another part of the neutral point terminal unit 4 is disposed through the slit portion 22a.
  • the neutral point terminal unit 4 is press-fitted and fixed to the terminal unit holding part 22b via the slit part 22a.
  • a part of the neutral point terminal unit 4 is disposed so as to protrude from the outer surface of the insulator 22 (protruding portion).
  • One end of the coil 23 of each phase wound is connected to the neutral point terminal unit 4 press-fitted and fixed to the terminal unit holding portion 22b.
  • the coil 23 is composed of a U-phase, V-phase, and W-phase coil 23, and each phase coil 23 is wound around a tooth portion 21c.
  • One end of the coil 23 of each phase is fixed to the coil holding portion 42b of the neutral point terminal 42 by, for example, solder, and a star connection is configured.
  • the other end of each phase coil 23 is electrically and mechanically joined to the corresponding phase lead wire 102.
  • the neutral point terminal unit 4 will be described with reference to FIGS.
  • the neutral point terminal unit 4 includes an insulating (for example, resin) fixing member 41 and a conductive neutral point terminal (terminal, terminal plate) 42.
  • the insulator 22 has a wall portion (wall) 22 b that is arranged so as to cover at least a part of the fixing member 41.
  • a part of the neutral point terminal unit 4 (a part of the fixing member 41 and the neutral point terminal 42) is accommodated in an accommodation chamber 22c formed in the terminal holding portion 22b of the insulator 22.
  • the wall portion (wall) 22b is provided such that an axial gap (storage chamber 22c) is formed between the stator core 21 and the wall portion 22b.
  • the fixing member 41 is disposed in the gap (the storage chamber 22c).
  • another part of the neutral point terminal unit 4 (a part of the neutral point terminal 42) is inserted into the slit part (slit) 22a and disposed through the slit part 22a.
  • the neutral point terminal unit 4 is press-fitted and fixed to the terminal unit holding portion 22b of the insulator 22 through the slit portion 22a.
  • the fixing member 41 is L-shaped in cross-section and has a lower end (second end) 41a and a wall 41b.
  • a plurality of protrusions 41 c are formed on the wall 41 b of the fixing member 41 at regular intervals, for example.
  • the neutral point terminal 42 is formed in a plate shape (for example, a substantially flat plate shape).
  • the neutral point terminal 42 has a flat plate portion 42d and a coil holding portion 42b.
  • a through hole 42a into which the protrusion 41c of the fixing member 41 is press-fitted is formed in the flat plate portion 42d.
  • Side portions 42c are linearly formed on both side surfaces of the flat plate portion 42d. Since the straight side surface portion 42c is formed on both side surfaces of the flat plate portion 42d, when the neutral point terminal 42 is manufactured by press working, the side surface portion 42c and the second side surface portion 42c of the first neutral point terminal 42 are formed.
  • the neutral point terminal 42 can be brought close to the side surface 42c, and the yield is improved.
  • the neutral point terminal 42 is attached (fixed) to the fixing member 41.
  • the protrusion 41 c of the fixing member 41 is press-fitted into the through hole 42 a of the neutral point terminal 42, so that the neutral point terminal 42 is integrated with the fixing member 41.
  • the neutral point terminal unit 4 is accommodated in the accommodation chamber 22 c and press-fitted into the insulator 22, the upper end portion (first end portion) 41 d of the fixing member 41 comes into contact with the wall portion (wall) 22 b of the insulator 22. .
  • the lower end portion 41 a of the fixing member 41 comes into contact with the annular portion 21 b of the stator core 21.
  • the coil 23 is wound around the tooth portion 21 c of the stator core 21 via the insulator 22.
  • the upper end portion 41 d of the fixing member 41 is in close contact with the insulator 22, and the lower end portion 41 a of the fixing member 41 is in close contact with the annular portion 21 b of the stator core 21.
  • the neutral point terminal unit 4 is sandwiched between the insulator 22 (wall portion 22b) and the stator core 21.
  • the neutral point terminal 42 is held by the terminal unit holding portion 22 b of the insulator 22. At least a part of the fixing member 41 is covered with a wall portion (wall) 22 b of the insulator 22.
  • the width W of the slit portion 22 a is narrower than the height H of the protrusion 41 c of the fixing member 41. Even when the insulator 22 is deformed by heat generated during soldering, the neutral point terminal unit 4 does not fall out of the insulator 22 through the slit portion 22a of the insulator 22.
  • the insulator 22 is applied to a two-wheeled motor magnet generator.
  • the insulator 22 may be applied to a generator or an electric motor for other purposes.
  • the neutral point terminal unit 4 is formed by forming the protrusion 41c and the bottom 31a on the insulating (for example, resin) fixing member 41.
  • the neutral point terminal 42 may be indirectly held by the insulator 22 and is not limited to this.
  • the neutral point terminal unit 4 may be formed by insert molding the neutral point terminal 42.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

An insulator includes a retaining portion with which a terminal unit provided with a neutral point terminal is retained. The terminal unit is provided with a plurality of connection terminals to which a coil wire of a rotating electrical machine is electrically connected, and which constitute the neutral point terminal, and an insulating securing member to which the connection terminal is secured. The terminal unit is accommodated in the retaining portion formed in the insulator, and the securing member is sandwiched between the insulator and the stator core.

Description

アウターローター型回転電機Outer rotor type rotating electrical machine
 本発明は、アウターローター型回転電機に関するものである。
 本願は、2015年4月21日に出願された、特願2015-087051号に基づき優先権を主張し、その内容をここに援用する。
The present invention relates to an outer rotor type rotating electrical machine.
This application claims priority based on Japanese Patent Application No. 2015-087051 for which it applied on April 21, 2015, and uses the content here.
 従来から、自動二輪車には、バッテリーを充電するため、および電装品への電力を供給するための発電機として、マグネットを備えた磁石発電機が広く利用されている。この種の磁石発電機は、自動二輪車のエンジンのクランクシャフトに連結される回転子と、エンジンケースに固定される固定子とを備えており、固定子は回転子の内側に配置される。回転子は、内周に複数のマグネットを備えた略椀状のフライホイールを備えている。固定子は、コイルが巻装されたステータコアを備えている。ステータコアには、樹脂製のインシュレータが装着されている。インシュレータには、金属(例えば真鍮など)の中性点端子が設けられている。ステータコアには、インシュレータの上に、U相、V相、W相のコイルが巻装されている。U相、V相、W相の各コイルは中性点端子を介してスター結線されている(例えば、特許文献1参照)。 2. Description of the Related Art Conventionally, in a motorcycle, a magnet generator having a magnet is widely used as a generator for charging a battery and supplying electric power to electrical components. This type of magnet generator includes a rotor connected to a crankshaft of an engine of a motorcycle and a stator fixed to an engine case, and the stator is disposed inside the rotor. The rotor includes a substantially bowl-shaped flywheel having a plurality of magnets on the inner periphery. The stator includes a stator core around which a coil is wound. A resin insulator is attached to the stator core. The insulator is provided with a neutral point terminal of metal (for example, brass). The stator core is wound with a U-phase, V-phase, and W-phase coil on an insulator. The U-phase, V-phase, and W-phase coils are star-connected through neutral point terminals (see, for example, Patent Document 1).
特開2010-63233号公報JP 2010-63233 A
 中性点端子はインシュレータに圧入固定される。U相、V相、W相の各コイルは中性点端子とハンダによって接続される。この際、インシュレータはハンダ付けの際に生じる熱によって変形する場合がある。インシュレータが変形すると、中性点端子がインシュレータから脱落するおそれがある。 中 The neutral point terminal is press-fitted and fixed to the insulator. The U-phase, V-phase, and W-phase coils are connected to the neutral point terminal by solder. At this time, the insulator may be deformed by heat generated during soldering. If the insulator is deformed, the neutral point terminal may fall off from the insulator.
 本発明の態様の目的は、ハンダ付けの際に生じる熱等によってインシュレータが変形してしまった場合であっても、中性点端子がインシュレータから脱落することを抑制し、品質の安定したアウターローター型回転電機を提供することにある。 The purpose of the embodiment of the present invention is to prevent the neutral point terminal from falling off the insulator even when the insulator is deformed by heat generated during soldering, etc. The object is to provide a rotary electric machine.
 本発明の態様によれば、中性点端子は、固定部材を介して、インシュレータとステータコアとに挟持されている。そのため、U相、V相、W相の各コイルが中性点端子とハンダ付けされる際に生じる熱等によってインシュレータが変形しても、中性点端子がインシュレータから脱落しコイルが断線することはない。 According to the aspect of the present invention, the neutral point terminal is sandwiched between the insulator and the stator core via the fixing member. For this reason, even if the insulator is deformed by heat generated when the U-phase, V-phase, and W-phase coils are soldered to the neutral point terminal, the neutral point terminal is dropped from the insulator and the coil is disconnected. There is no.
 本発明の一態様は、固定子と、固定子の周囲を回転する回転子とを備えたアウターローター型回転電機において、固定子は、磁性材料からなるステータコアと、ステータコアに装着されたインシュレータと、インシュレータを介してステータコアに巻装されたコイルと、コイルが接続された端子板を有する端子ユニットとを有し、回転子は、固定子の周りを回転するフライホイールと、フライホイールの内周面に固定された複数のマグネットとを有し、端子ユニットは、端子板が固定される絶縁性の固定部材を備えており、インシュレータは、端子ユニットを収納する収納室が形成された端子ユニット保持部を備え、端子ユニットは、インシュレータの端子ユニット保持部に収納され、固定部材がインシュレータとステータコアとによって挟持されていることを特徴とするアウターローター型回転電機である。 One aspect of the present invention is an outer rotor type rotating electrical machine including a stator and a rotor that rotates around the stator.The stator includes a stator core made of a magnetic material, an insulator attached to the stator core, and The rotor includes a coil wound around a stator core via an insulator, and a terminal unit having a terminal plate to which the coil is connected. The rotor rotates around the stator, and the inner peripheral surface of the flywheel. The terminal unit has an insulating fixing member to which the terminal plate is fixed, and the insulator has a terminal unit holding portion in which a storage chamber for storing the terminal unit is formed. The terminal unit is housed in the terminal unit holding portion of the insulator, and the fixing member is formed by the insulator and the stator core. It is outer rotor type rotating electrical machine, characterized in that the lifting.
 上記のアウターローター型回転電機において、端子ユニットの固定部材の第1端部は、インシュレータの端子ユニット保持部の収納室の壁部に当接してもよく、端子ユニットの固定部材の第2端部は、ステータコアの側壁部に当接してもよい。 In the outer rotor type rotating electrical machine described above, the first end of the fixing member of the terminal unit may contact the wall of the storage chamber of the terminal unit holding portion of the insulator, and the second end of the fixing member of the terminal unit. May contact the side wall of the stator core.
 上記のアウターローター型回転電機において、インシュレータの端子ユニット保持部の収納室の壁部には、端子ユニットの端子板が挿通されるスリット部が形成されてもよく、スリットを通ってインシュレータから突出した端子板のコイル保持部にコイルが接続されていてもよい。 In the outer rotor type rotating electrical machine described above, the wall portion of the storage chamber of the terminal unit holding portion of the insulator may be formed with a slit portion through which the terminal plate of the terminal unit is inserted, and protrudes from the insulator through the slit. A coil may be connected to the coil holding portion of the terminal board.
 上記のアウターローター型回転電機において、固定部材には、端子板が圧入固定されてもよい。 In the outer rotor type rotating electric machine described above, a terminal plate may be press-fitted and fixed to the fixing member.
 本発明の別の態様において、アウターローター型回転電機は、固定子と、回転子と、を備える。前記固定子は、磁性材料からなるステータコアと、前記ステータコアに装着されたインシュレータと、前記ステータコアに巻装されたコイルと、前記コイルが接続された端子板を有する端子ユニットと、を有する。前記回転子は、前記固定子に対して回転するように配されるフライホイールと、前記フライホイールに固定された複数のマグネットと、を有する。前記端子ユニットは、前記端子板が取り付けられる絶縁性の固定部材を有する。前記インシュレータは、前記固定部材の少なくとも一部を覆うように配される壁を有する。 In another aspect of the present invention, an outer rotor type rotating electrical machine includes a stator and a rotor. The stator includes a stator core made of a magnetic material, an insulator attached to the stator core, a coil wound around the stator core, and a terminal unit having a terminal plate to which the coil is connected. The rotor includes a flywheel arranged to rotate with respect to the stator, and a plurality of magnets fixed to the flywheel. The terminal unit has an insulating fixing member to which the terminal plate is attached. The insulator has a wall arranged to cover at least a part of the fixing member.
本発明の実施形態における磁石発電機の正面図である。It is a front view of the magnet generator in the embodiment of the present invention. 図1のA-A断面図である。FIG. 2 is a cross-sectional view taken along the line AA in FIG. 図2のB部拡大図である。It is the B section enlarged view of FIG. 固定部材の斜視図である。It is a perspective view of a fixing member. 中性点端子の斜視図である。It is a perspective view of a neutral point terminal. 中性点端子ユニットの斜視図である。It is a perspective view of a neutral point terminal unit.
 一実施形態にかかる、自動二輪車用の磁石発電機(アウターローター型回転電機)1が、図1、図2に基づいて説明される。磁石発電機1は、例えば自動二輪車における磁石発電機として利用される。磁石発電機1は、エンジンケース(不図示)に固定される固定子2と、エンジンのクランクシャフト(不図示)の先端に固定される回転子3とを有している。回転子3はクランクシャフトの回転に伴って固定子2の周りを回転する。回転子3は、固定子2に対して回転するように配される。 A magnet generator (outer rotor type rotating electrical machine) 1 for a motorcycle according to an embodiment will be described with reference to FIGS. 1 and 2. The magnet generator 1 is used as, for example, a magnet generator in a motorcycle. The magnet generator 1 has a stator 2 that is fixed to an engine case (not shown) and a rotor 3 that is fixed to the tip of an engine crankshaft (not shown). The rotor 3 rotates around the stator 2 as the crankshaft rotates. The rotor 3 is arranged to rotate with respect to the stator 2.
 回転子3は、略椀形状のフライホイール31と、フライホイール31の底面の径方向中央に固定されたボス32とを有している。フライホイール31の内周面の上には、複数のマグネット33が周方向に等間隔に配置されている。 The rotor 3 has a substantially bowl-shaped flywheel 31 and a boss 32 fixed at the radial center of the bottom surface of the flywheel 31. On the inner peripheral surface of the flywheel 31, a plurality of magnets 33 are arranged at equal intervals in the circumferential direction.
 ボス32は、円筒形状の筒部32aと、略円盤形状のフランジ部32bとを有する。フランジ部32bは、筒部32aと一体形成されている。フランジ部32bは、複数のリベット100によってフライホイール31の底面に締結固定されている。ボス32の筒部32aにはクランクシャフト(不図示)が固定される。 The boss 32 has a cylindrical tube portion 32a and a substantially disc-shaped flange portion 32b. The flange portion 32b is integrally formed with the cylindrical portion 32a. The flange portion 32 b is fastened and fixed to the bottom surface of the flywheel 31 by a plurality of rivets 100. A crankshaft (not shown) is fixed to the cylindrical portion 32 a of the boss 32.
 フライホイール31の底部31aの内側には、樹脂製のリング形状のマグネットケース34が設置されている。マグネットケース34上にはマグネット33が載置されている。マグネット33の一端には、マグネットホルダー35が載置されている。マグネットホルダー35が屈曲形成されることによって、マグネット33はフライホイール31の内周面に圧接される。マグネット33は、フライホイール31の内周面に実質的に固定されている。マグネットホルダー35は、フライホイール31の開口周縁部31bがカールカシメされることによって固定されている。 A resin ring-shaped magnet case 34 is installed inside the bottom 31a of the flywheel 31. A magnet 33 is placed on the magnet case 34. A magnet holder 35 is placed on one end of the magnet 33. The magnet 33 is pressed against the inner peripheral surface of the flywheel 31 by bending the magnet holder 35. The magnet 33 is substantially fixed to the inner peripheral surface of the flywheel 31. The magnet holder 35 is fixed by curling the opening peripheral edge 31b of the flywheel 31.
 固定子2は、ステータコア21と、ステータコア21に装着されたインシュレータ22とを有している。ステータコア21には、インシュレータ22を介してコイル23が巻装されている。ステータコア21は、磁性材料の板材を少なくとも軸線方向に積層して形成されている。ステータコア21において、径方向中央に孔(ボス孔)21eが形成されている。孔21eには、エンジンのクランクシャフト(不図示)が貫挿される。クランクシャフトと回転子3とがボス32の筒部32aを介して連結される。ステータコア21は、円環形状の円環部21bと、円環部21bから放射状に径方向外側に向かって延出するティース部21cとを有している。ステータコア21の円環部21bには複数のボルト孔21dが形成されている。固定子2は、ボルト孔21dに挿入されたボルト101によってエンジンケースに締結固定される。 The stator 2 has a stator core 21 and an insulator 22 attached to the stator core 21. A coil 23 is wound around the stator core 21 via an insulator 22. The stator core 21 is formed by laminating magnetic material plates at least in the axial direction. In the stator core 21, a hole (boss hole) 21e is formed in the center in the radial direction. An engine crankshaft (not shown) is inserted through the hole 21e. The crankshaft and the rotor 3 are connected to each other through a cylindrical portion 32a of the boss 32. The stator core 21 has an annular ring portion 21b and a teeth portion 21c extending radially outward from the annular portion 21b. A plurality of bolt holes 21 d are formed in the annular portion 21 b of the stator core 21. The stator 2 is fastened and fixed to the engine case by a bolt 101 inserted into the bolt hole 21d.
 ステータコア21に装着されるインシュレータ22は、端子ユニット保持部(保持部)22bと、収容室22cとを有する。端子ユニット保持部22bにはスリット部(スリット)22aが形成されている。収容室22c内には、中性点端子ユニット(端子ユニット)4の一部が収容されている。一例において、中性点端子ユニット4の別の一部が、スリット部22aを貫通して配置されている。例えば、中性点端子ユニット4は、スリット部22aを介して端子ユニット保持部22bに圧入固定されている。また、中性点端子ユニット4の一部が、インシュレータ22の外面に対して突出して配されている(突出部)。端子ユニット保持部22bに圧入固定された中性点端子ユニット4には、巻装された各相のコイル23の一端が接続されている。 The insulator 22 attached to the stator core 21 has a terminal unit holding part (holding part) 22b and a storage chamber 22c. The terminal unit holding part 22b is formed with a slit part (slit) 22a. A part of the neutral point terminal unit (terminal unit) 4 is accommodated in the accommodation chamber 22c. In one example, another part of the neutral point terminal unit 4 is disposed through the slit portion 22a. For example, the neutral point terminal unit 4 is press-fitted and fixed to the terminal unit holding part 22b via the slit part 22a. Further, a part of the neutral point terminal unit 4 is disposed so as to protrude from the outer surface of the insulator 22 (protruding portion). One end of the coil 23 of each phase wound is connected to the neutral point terminal unit 4 press-fitted and fixed to the terminal unit holding portion 22b.
 コイル23は、U相、V相、W相のコイル23から構成されており、各相のコイル23はティース部21cに巻装されている。各相のコイル23の一端は、例えばハンダによって、中性点端子42のコイル保持部42bに固定され、スター結線が構成されている。各相のコイル23の他端は、対応する相のリード線102と電気的かつ機械的に接合される。 The coil 23 is composed of a U-phase, V-phase, and W-phase coil 23, and each phase coil 23 is wound around a tooth portion 21c. One end of the coil 23 of each phase is fixed to the coil holding portion 42b of the neutral point terminal 42 by, for example, solder, and a star connection is configured. The other end of each phase coil 23 is electrically and mechanically joined to the corresponding phase lead wire 102.
 図3から図6に基づいて、中性点端子ユニット4が説明される。中性点端子ユニット4は、絶縁性(例えば、樹脂製)の固定部材41と導電性の中性点端子(端子、端子板)42とを有している。インシュレータ22は、固定部材41の少なくとも一部を覆うように配される壁部(壁)22bを有する。中性点端子ユニット4の一部(固定部材41及び中性点端子42の一部)は、インシュレータ22の端子保持部22bに形成された収容室22c内に収容される。壁部(壁)22bは、ステータコア21と壁部22bとの間に軸方向のギャップ(収納室22c)が形成されるように設けられる。固定部材41の少なくとも一部がギャップ(収納室22c)に配置される。一例において、中性点端子ユニット4の別の一部(中性点端子42の一部)が、スリット部(スリット)22aに挿入され、スリット部22aを貫通して配置されている。例えば、中性点端子ユニット4は、スリット部22aを介してインシュレータ22の端子ユニット保持部22bに圧入固定されている。一例において、固定部材41は、断面視L字形状であって、下端部(第2端部)41aと壁部41bとを有している。固定部材41の壁部41bには複数の突起41cが、例えば等間隔に、形成されている。 The neutral point terminal unit 4 will be described with reference to FIGS. The neutral point terminal unit 4 includes an insulating (for example, resin) fixing member 41 and a conductive neutral point terminal (terminal, terminal plate) 42. The insulator 22 has a wall portion (wall) 22 b that is arranged so as to cover at least a part of the fixing member 41. A part of the neutral point terminal unit 4 (a part of the fixing member 41 and the neutral point terminal 42) is accommodated in an accommodation chamber 22c formed in the terminal holding portion 22b of the insulator 22. The wall portion (wall) 22b is provided such that an axial gap (storage chamber 22c) is formed between the stator core 21 and the wall portion 22b. At least a part of the fixing member 41 is disposed in the gap (the storage chamber 22c). In one example, another part of the neutral point terminal unit 4 (a part of the neutral point terminal 42) is inserted into the slit part (slit) 22a and disposed through the slit part 22a. For example, the neutral point terminal unit 4 is press-fitted and fixed to the terminal unit holding portion 22b of the insulator 22 through the slit portion 22a. In one example, the fixing member 41 is L-shaped in cross-section and has a lower end (second end) 41a and a wall 41b. A plurality of protrusions 41 c are formed on the wall 41 b of the fixing member 41 at regular intervals, for example.
 一例において、中性点端子42は板状(例えば、略平板状)に形成されている。中性点端子42は、平板部42dとコイル保持部42bとを有している。平板部42dには、固定部材41の突起41cが圧入される貫通孔42aが形成されている。平板部42dの両側面には側面部42cが直線状に形成されている。平板部42dの両側面に直線状の側面部42cが形成されているため、プレス加工によって中性点端子42を製造する際、1つ目の中性点端子42の側面部42cと2つ目の中性点端子42の側面42cとの間を近接させることが可能となり、歩留まりが向上する。 In one example, the neutral point terminal 42 is formed in a plate shape (for example, a substantially flat plate shape). The neutral point terminal 42 has a flat plate portion 42d and a coil holding portion 42b. A through hole 42a into which the protrusion 41c of the fixing member 41 is press-fitted is formed in the flat plate portion 42d. Side portions 42c are linearly formed on both side surfaces of the flat plate portion 42d. Since the straight side surface portion 42c is formed on both side surfaces of the flat plate portion 42d, when the neutral point terminal 42 is manufactured by press working, the side surface portion 42c and the second side surface portion 42c of the first neutral point terminal 42 are formed. The neutral point terminal 42 can be brought close to the side surface 42c, and the yield is improved.
 中性点端子42が固定部材41に取り付けられる(固定される)。一例において、中性点端子ユニット4は、固定部材41の突起41cが中性点端子42の貫通孔42aに圧入されることによって、中性点端子42が固定部材41と一体化される。中性点端子ユニット4が収容室22c内に収容されると共にインシュレータ22に圧入されると、固定部材41の上端部(第1端部)41dはインシュレータ22の壁部(壁)22bと当接する。中性点端子ユニット4が圧入されたインシュレータ22がステータコア21に装着されると、固定部材41の下端部41aはステータコア21の円環部21bと当接する。一例において、インシュレータ22がステータコア21に装着された後に、ステータコア21のティース部21cには、インシュレータ22を介してコイル23が巻装される。固定部材41の上端部41dはインシュレータ22と密着し、固定部材41の下端部41aはステータコア21の円環部21bと密着する。中性点端子ユニット4は、インシュレータ22(壁部22b)とステータコア21とによって挟持される。 The neutral point terminal 42 is attached (fixed) to the fixing member 41. In one example, in the neutral point terminal unit 4, the protrusion 41 c of the fixing member 41 is press-fitted into the through hole 42 a of the neutral point terminal 42, so that the neutral point terminal 42 is integrated with the fixing member 41. When the neutral point terminal unit 4 is accommodated in the accommodation chamber 22 c and press-fitted into the insulator 22, the upper end portion (first end portion) 41 d of the fixing member 41 comes into contact with the wall portion (wall) 22 b of the insulator 22. . When the insulator 22 into which the neutral point terminal unit 4 is press-fitted is attached to the stator core 21, the lower end portion 41 a of the fixing member 41 comes into contact with the annular portion 21 b of the stator core 21. In one example, after the insulator 22 is mounted on the stator core 21, the coil 23 is wound around the tooth portion 21 c of the stator core 21 via the insulator 22. The upper end portion 41 d of the fixing member 41 is in close contact with the insulator 22, and the lower end portion 41 a of the fixing member 41 is in close contact with the annular portion 21 b of the stator core 21. The neutral point terminal unit 4 is sandwiched between the insulator 22 (wall portion 22b) and the stator core 21.
 したがって、固定部材41がインシュレータ22とステータコア21とによって挟持されることによって、中性点端子42はインシュレータ22の端子ユニット保持部22bに保持される。固定部材41の少なくとも一部がインシュレータ22の壁部(壁)22bに覆われている。スリット部22aの幅Wは、固定部材41の突起41cの高さHよりも狭くなっている。ハンダ付けの際に生じる熱等によってインシュレータ22が変形してしまった場合であっても、中性点端子ユニット4がインシュレータ22のスリット部22aを介してインシュレータ22外へと脱落することはない。 Therefore, when the fixing member 41 is sandwiched between the insulator 22 and the stator core 21, the neutral point terminal 42 is held by the terminal unit holding portion 22 b of the insulator 22. At least a part of the fixing member 41 is covered with a wall portion (wall) 22 b of the insulator 22. The width W of the slit portion 22 a is narrower than the height H of the protrusion 41 c of the fixing member 41. Even when the insulator 22 is deformed by heat generated during soldering, the neutral point terminal unit 4 does not fall out of the insulator 22 through the slit portion 22a of the insulator 22.
 なお、前述の実施形態では、二輪車用の磁石発電機にインシュレータ22を適用した場合について示したが、他の用途の発電機や電動機に適用することも可能である。 In the above-described embodiment, the case where the insulator 22 is applied to a two-wheeled motor magnet generator has been described. However, the insulator 22 may be applied to a generator or an electric motor for other purposes.
 また、実施形態では絶縁性(例えば樹脂製)の固定部材41に突起41cと底部31aを形成することによって、中性点端子ユニット4を形成した場合について示した。しかしながら、中性点端子42が間接的にインシュレータ22に保持されればよいのであって、これに限られることはない。たとえば、中性点端子42をインサートモールド成型することよって中性点端子ユニット4を形成しても良い。 In the embodiment, the neutral point terminal unit 4 is formed by forming the protrusion 41c and the bottom 31a on the insulating (for example, resin) fixing member 41. However, the neutral point terminal 42 may be indirectly held by the insulator 22 and is not limited to this. For example, the neutral point terminal unit 4 may be formed by insert molding the neutral point terminal 42.
1   磁石発電機
2   固定子
3   回転子
4   中性点端子ユニット
21  ステータコア
21a ボス孔
21b 円環部
21c ティース部
21d ボルト孔
21e ボス孔
22  インシュレータ
22a スリット部
22b 端子ユニット保持部
22c 収容室
22d 壁部
23  コイル
31  フライホイール
31a 底部
31b 開口周縁部
32  ボス
33  マグネット
33a 上端部
34  マグネットケース
35  マグネットホルダー
41  固定部材
41a 下端部(第2端部)
41b 壁部
41c 突起
41d 上端部(第1端部)
42  中性点端子
42a 貫通孔
42b コイル保持部
42c 側面部
100 リベット
101 ボルト
102 リード線
DESCRIPTION OF SYMBOLS 1 Magnet generator 2 Stator 3 Rotor 4 Neutral point terminal unit 21 Stator core 21a Boss hole 21b Ring part 21c Teeth part 21d Bolt hole 21e Boss hole 22 Insulator 22a Slit part 22b Terminal unit holding part 22c Storage chamber 22d Wall part 23 coil 31 flywheel 31a bottom 31b opening peripheral edge 32 boss 33 magnet 33a upper end 34 magnet case 35 magnet holder 41 fixing member 41a lower end (second end)
41b Wall 41c Projection 41d Upper end (first end)
42 Neutral point terminal 42a Through hole 42b Coil holding part 42c Side face part 100 Rivet 101 Bolt 102 Lead wire

Claims (9)

  1.  固定子と、前記固定子の周囲を回転する回転子とを備えたアウターローター型回転電機において、
     前記固定子は、磁性材料からなるステータコアと、前記ステータコアに装着されたインシュレータと、前記インシュレータを介して前記ステータコアに巻装されたコイルと、前記コイルが接続された端子板を有する端子ユニットとを有し、
     前記回転子は、前記固定子の周りを回転するフライホイールと、前記フライホイールの内周面に固定された複数のマグネットとを有し、
     前記端子ユニットは、前記端子板が固定される絶縁性の固定部材を備え、
     前記インシュレータは、前記端子ユニットを収納する収納室が形成された端子ユニット保持部を備え、
     前記端子ユニットは、前記インシュレータの前記端子ユニット保持部に収納され、
     前記固定部材が前記インシュレータと前記ステータコアとによって挟持されている、ことを特徴とするアウターローター型回転電機。
    In an outer rotor type rotating electrical machine comprising a stator and a rotor that rotates around the stator,
    The stator includes a stator core made of a magnetic material, an insulator attached to the stator core, a coil wound around the stator core via the insulator, and a terminal unit having a terminal plate to which the coil is connected. Have
    The rotor has a flywheel that rotates around the stator, and a plurality of magnets fixed to the inner peripheral surface of the flywheel,
    The terminal unit includes an insulating fixing member to which the terminal plate is fixed,
    The insulator includes a terminal unit holding portion in which a storage chamber for storing the terminal unit is formed,
    The terminal unit is housed in the terminal unit holding portion of the insulator,
    The outer rotor type rotating electrical machine, wherein the fixing member is sandwiched between the insulator and the stator core.
  2.  請求項1に記載されたアウターローター型回転電機において、
     前記端子ユニットの固定部材の第1端部は、前記インシュレータの前記端子ユニット保持部の収納室の壁部に当接し、前記端子ユニットの固定部材の第2端部は、前記ステータコアの側壁部に当接している、ことを特徴とするアウターローター型回転電機。
    In the outer rotor type rotating electrical machine according to claim 1,
    The first end portion of the fixing member of the terminal unit is in contact with the wall portion of the storage chamber of the terminal unit holding portion of the insulator, and the second end portion of the fixing member of the terminal unit is on the side wall portion of the stator core. An outer rotor type rotating electrical machine characterized by being in contact.
  3.  請求項2に記載されたアウターローター型回転電機において、
     前記インシュレータの前記端子ユニット保持部の収納室の壁部には、前記端子ユニットの端子板が挿通されるスリット部が形成され、前記スリットを通って前記インシュレータから突出した前記端子板のコイル保持部に前記コイルが接続されている、ことを特徴とするアウターローター型回転電機。
    In the outer rotor type rotating electrical machine according to claim 2,
    The wall portion of the storage chamber of the terminal unit holding portion of the insulator is formed with a slit portion through which the terminal plate of the terminal unit is inserted, and the coil holding portion of the terminal plate protruding from the insulator through the slit The outer rotor type rotating electrical machine, wherein the coil is connected to the outer rotor type rotating electrical machine.
  4.  請求項1から請求項3のうち、いずれか1項に記載されたアウターローター型回転電機において、
     前記固定部材には、前記端子板が圧入固定されている、ことを特徴とするアウターローター型回転電機。
    In the outer rotor type rotating electrical machine according to any one of claims 1 to 3,
    The outer rotor type rotating electrical machine, wherein the terminal plate is press-fitted and fixed to the fixing member.
  5.  固定子と、
     回転子と、を備え、
     前記固定子は、磁性材料からなるステータコアと、前記ステータコアに装着されたインシュレータと、前記ステータコアに巻装されたコイルと、前記コイルが接続された端子板を有する端子ユニットと、を有し、
     前記回転子は、前記固定子に対して回転するように配されるフライホイールと、前記フライホイールに固定された複数のマグネットと、を有し、
     前記端子ユニットは、前記端子板が取り付けられる絶縁性の固定部材を有し、
     前記インシュレータは、前記固定部材の少なくとも一部を覆うように配される壁を有する、アウターローター型回転電機。
    A stator,
    A rotor, and
    The stator includes a stator core made of a magnetic material, an insulator attached to the stator core, a coil wound around the stator core, and a terminal unit having a terminal plate to which the coil is connected,
    The rotor has a flywheel arranged to rotate with respect to the stator, and a plurality of magnets fixed to the flywheel,
    The terminal unit has an insulating fixing member to which the terminal plate is attached,
    The insulator is an outer rotor type rotating electrical machine having a wall disposed so as to cover at least a part of the fixing member.
  6.  前記壁は、前記ステータコアと前記壁との間に軸方向のギャップが形成されるように設けられ、
     前記固定部材の少なくとも一部が前記ギャップに配置される、請求項5に記載のアウターローター型回転電機。
    The wall is provided such that an axial gap is formed between the stator core and the wall;
    The outer rotor type rotating electrical machine according to claim 5, wherein at least a part of the fixing member is disposed in the gap.
  7.  前記壁は、前記固定部材に当接するように配置される、請求項5又は6に記載のアウターローター型回転電機。 The outer rotor type rotating electrical machine according to claim 5 or 6, wherein the wall is disposed so as to contact the fixing member.
  8.  前記壁は、前記端子板が挿入されるスリットを有する、請求項5から7のいずれか一項に記載のアウターローター型回転電機。 The outer rotor type rotating electrical machine according to any one of claims 5 to 7, wherein the wall has a slit into which the terminal plate is inserted.
  9.  前記固定部材には、前記端子板が圧入固定されている、、請求項5から8のいずれ一項に記載のアウターローター型回転電機。 The outer rotor type rotating electrical machine according to any one of claims 5 to 8, wherein the terminal plate is press-fitted and fixed to the fixing member.
PCT/JP2016/062616 2015-04-21 2016-04-21 Outer rotor type rotating electrical machine WO2016171205A1 (en)

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