JP6455211B2 - Rotor and motor - Google Patents

Rotor and motor Download PDF

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Publication number
JP6455211B2
JP6455211B2 JP2015030688A JP2015030688A JP6455211B2 JP 6455211 B2 JP6455211 B2 JP 6455211B2 JP 2015030688 A JP2015030688 A JP 2015030688A JP 2015030688 A JP2015030688 A JP 2015030688A JP 6455211 B2 JP6455211 B2 JP 6455211B2
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magnet
core
side fixing
claw
fixing surface
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JP2016152756A (en
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晃司 三上
晃司 三上
洋次 山田
洋次 山田
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Denso Corp
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Denso Corp
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Priority to JP2015030688A priority Critical patent/JP6455211B2/en
Priority to US14/975,394 priority patent/US9787148B2/en
Priority to DE102015122344.9A priority patent/DE102015122344A1/en
Priority to CN201511022573.5A priority patent/CN105763012B/en
Publication of JP2016152756A publication Critical patent/JP2016152756A/en
Priority to US15/713,253 priority patent/US10630122B2/en
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Description

本発明は、ロータ及びモータに関するものである。   The present invention relates to a rotor and a motor.

従来、モータに使用されるロータには、例えば特許文献１に記載されているように、周方向に複数の爪状磁極をそれぞれ有し互いに重ね合わされた対のロータコアの間に、円板状の界磁磁石を配置して対のロータコアの爪状磁極を周方向に交互に異なる磁極として機能させる所謂永久磁石界磁のランデル型構造のロータがある。   Conventionally, a rotor used in a motor has a disk-like shape between a pair of rotor cores each having a plurality of claw-shaped magnetic poles in the circumferential direction, as described in, for example, Patent Document 1. There is a so-called permanent magnet field Landell-type rotor in which field magnets are arranged so that the claw-shaped magnetic poles of a pair of rotor cores function alternately as different magnetic poles in the circumferential direction.

特許文献１に記載されたロータは、界磁磁石に加えて、爪状磁極の背面、即ち爪状磁極と界磁磁石との間に配置される背面磁石と、周方向に隣り合う爪状磁極間に配置される極間磁石とを整流磁石として備えている。なお、この整流磁石は、ロータにおいて漏れ磁束を低減させるためのものである。   The rotor described in Patent Document 1 includes a claw-shaped magnetic pole adjacent to the back surface of the claw-shaped magnetic pole, that is, a back magnet disposed between the claw-shaped magnetic pole and the field magnet, in addition to the field magnet. An inter-pole magnet disposed between them is provided as a rectifying magnet. The rectifying magnet is for reducing leakage magnetic flux in the rotor.

特開２０１２−１１５０８５号公報JP 2012-115085 A

上記のような整流磁石を備えたロータにおいて、整流磁石の固定の仕方が具体的には明らかにされておらず、整流磁石をどのように良好に固定するかという課題があった。
本発明は、上記課題を解決するためになされたものであって、その目的は、整流磁石を良好に固定することができるロータ及びモータを提供することにある。 In the rotor provided with the rectifying magnet as described above, the method of fixing the rectifying magnet has not been clarified specifically, and there has been a problem of how to fix the rectifying magnet satisfactorily.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a rotor and a motor that can satisfactorily fix a rectifying magnet.

上記課題を解決するロータは、円板状のコアベース及び前記コアベースの外周縁部で周方向に並ぶ複数の爪状磁極をそれぞれ有し、互いの前記爪状磁極が周方向に交互となるように軸方向に重ねられた第１及び第２ロータコアと、前記第１ロータコアの前記コアベースと前記第２ロータコアの前記コアベースとの間に配置され、前記第１ロータコアの前記爪状磁極と前記第２ロータコアの前記爪状磁極とを周方向に異なる磁極として機能させるように軸方向に磁化された界磁磁石と、前記界磁磁石の外周で前記爪状磁極の周囲に配置され各前記爪状磁極と同極性の面が対向するように磁化された整流磁石とを備えたロータであって、前記第１及び第２ロータコアの前記爪状磁極と前記整流磁石とは、接着剤にて互いに固定される固定面をそれぞれ有し、前記爪状磁極の前記固定面には、流入凹部が設けられている。 A rotor that solves the above problems has a disc-shaped core base and a plurality of claw-shaped magnetic poles arranged in the circumferential direction at the outer peripheral edge of the core base, and the claw-shaped magnetic poles alternate in the circumferential direction. The first and second rotor cores stacked in the axial direction as described above, and the claw-shaped magnetic poles of the first rotor core disposed between the core base of the first rotor core and the core base of the second rotor core A field magnet magnetized in the axial direction so that the claw-shaped magnetic pole of the second rotor core functions as a magnetic pole different in the circumferential direction, and the claw-shaped magnetic pole arranged around the claw-shaped magnetic pole on the outer periphery of the field magnet. a rotor with a rectifier magnet claw-shaped magnetic poles of the same polarity face is magnetized so as to be opposed, and the claw-shaped magnetic poles and the rectifying magnet of the first and second rotor core with an adhesive It fixed surface fixed to each other Is a, on the fixed surface of the claw-shaped magnetic poles, the inflow recess.

この構成によれば、第１及び第２ロータコアの爪状磁極と整流磁石とを接着剤により固定する。そして、爪状磁極の固定面には流入凹部が形成されているため、互いに固定される固定面と固定面とを重ね合わせたときに、固定面の間に介在された接着剤が流入凹部に流入可能である。従って、互いに固定される固定面と固定面との間から接着剤が外部に漏れ出ることが抑制され、固定面に塗布された接着剤は互いに固定される固定面の間に留まり易くなる。よって、接着剤にて整流磁石を良好に固定することができる。 According to this configuration, the claw-shaped magnetic poles of the first and second rotor cores and the rectifying magnet are fixed by the adhesive. Since the inflow recess is formed in the fixing surface of the claw-shaped magnetic pole, when the fixing surface and the fixing surface fixed to each other are overlapped, the adhesive interposed between the fixing surfaces is in the inflow recess. Inflow is possible. Accordingly, the adhesive is prevented from leaking to the outside from between the fixed surfaces fixed to each other, and the adhesive applied to the fixed surfaces easily stays between the fixed surfaces fixed to each other. Therefore, the rectifying magnet can be satisfactorily fixed with the adhesive.

上記ロータにおいて、前記流入凹部は、前記爪状磁極の周方向の中央部に設けられ、軸方向に延びる溝状をなしている。In the rotor, the inflow recess is provided in a central portion in the circumferential direction of the claw-shaped magnetic pole and has a groove shape extending in the axial direction.

上記ロータにおいて、前記整流磁石は、ネオジボンド磁石よりなる。In the rotor, the rectifying magnet is a neodymium bonded magnet.

上記ロータにおいて、前記流入凹部の内周面は、前記固定面から連続して形成され円弧状に湾曲した円弧面を有することが好ましい。
この構成によれば、流入凹部の内周面に円弧面が設けられたことにより、互いに固定される固定面の間の接着剤が流入凹部内により流入し易くなる。従って、互いに固定される固定面と固定面との間から接着剤が外部に漏れ出ることがより抑制され、固定面に塗布された接着剤は互いに固定される固定面の間により留まり易くなる。よって、接着剤にて整流磁石をより良好に固定することができる。 In the rotor, it is preferable that an inner peripheral surface of the inflow recess has an arc surface that is continuously formed from the fixed surface and is curved in an arc shape.
According to this configuration, since the circular arc surface is provided on the inner peripheral surface of the inflow recess, the adhesive between the fixed surfaces fixed to each other can easily flow into the inflow recess. Therefore, it is further suppressed that the adhesive leaks to the outside from between the fixed surfaces fixed to each other, and the adhesive applied to the fixed surface is more likely to stay between the fixed surfaces fixed to each other. Therefore, it is possible to better fix the rectifying magnet with the adhesive.

上記ロータにおいて、前記流入凹部は、前記固定面の軸方向の一端から他端まで軸方向に沿って延びる溝状をなすことが好ましい。
この構成によれば、流入凹部は軸方向に沿って延びる溝状という簡単な形状である。従って、流入凹部を固定面に容易に形成することができる。また、流入凹部は、固定面の軸方向の一端から他端まで軸方向に沿って延びているため、固定面における軸方向の何れの位置においても接着剤が流入凹部に流入できる。従って、互いに固定される固定面と固定面との間から接着剤が外部に漏れ出ることがさらに抑制され、固定面に塗布された接着剤は互いに固定される固定面の間にさらに留まり易くなる。よって、接着剤にて整流磁石をさらに良好に固定することができる。 In the rotor, it is preferable that the inflow recess has a groove shape extending in the axial direction from one end to the other end in the axial direction of the fixed surface.
According to this configuration, the inflow recess has a simple shape such as a groove extending along the axial direction. Therefore, the inflow recess can be easily formed on the fixed surface. Further, since the inflow recess extends along the axial direction from one end to the other end in the axial direction of the fixed surface, the adhesive can flow into the inflow recess at any position in the axial direction on the fixed surface. Therefore, it is further suppressed that the adhesive leaks to the outside from between the fixing surfaces fixed to each other, and the adhesive applied to the fixing surfaces is more likely to stay between the fixing surfaces fixed to each other. . Therefore, the rectifying magnet can be fixed more favorably with the adhesive.

上記課題を解決するモータは、上記ロータと、回転磁界を発生するステータとを備える。
同構成によれば、モータにおいて、上記した効果を得ることができる。 A motor that solves the above problem includes the rotor and a stator that generates a rotating magnetic field.
According to this configuration, the above-described effect can be obtained in the motor.

本発明のロータ及びモータによれば、整流磁石を良好に固定することができる。   According to the rotor and motor of the present invention, the rectifying magnet can be fixed satisfactorily.

第１実施形態のモータの断面図である。It is sectional drawing of the motor of 1st Embodiment. 第１実施形態のロータの分解斜視図である。It is a disassembled perspective view of the rotor of 1st Embodiment. 第１実施形態におけるロータコアの斜視図である。It is a perspective view of the rotor core in 1st Embodiment. 第１実施形態における整流磁石の斜視図である。It is a perspective view of the rectifier magnet in a 1st embodiment. 第１実施形態のロータの部分拡大図である。It is the elements on larger scale of the rotor of 1st Embodiment. 第１実施形態のロータの斜視図である。It is a perspective view of the rotor of 1st Embodiment. 第１実施形態のロータの断面図である。It is sectional drawing of the rotor of 1st Embodiment. 第２実施形態のロータの分解斜視図である。It is a disassembled perspective view of the rotor of 2nd Embodiment. （ａ）及び（ｂ）は第２実施形態のロータの断面図である。(A) And (b) is sectional drawing of the rotor of 2nd Embodiment. 別の実施形態のロータの部分拡大図である。It is the elements on larger scale of the rotor of another embodiment. 別の実施形態のロータの部分拡大図である。It is the elements on larger scale of the rotor of another embodiment. 別の実施形態のロータの部分拡大図である。It is the elements on larger scale of the rotor of another embodiment. 別の実施形態のロータの部分拡大図である。It is the elements on larger scale of the rotor of another embodiment.

（第１実施形態）
以下、モータの第１実施形態について説明する。
図１に示す本実施形態のモータ１はブラシレスモータである。モータ１の外郭であるモータケース２は、略有底円筒状に形成されたヨークハウジング３と、ヨークハウジング３の開口部を閉塞するエンドプレート４とを有している。 (First embodiment)
Hereinafter, a first embodiment of the motor will be described.
The motor 1 of this embodiment shown in FIG. 1 is a brushless motor. A motor case 2 that is an outer shell of the motor 1 includes a yoke housing 3 formed in a substantially bottomed cylindrical shape, and an end plate 4 that closes an opening of the yoke housing 3.

ヨークハウジング３の内周面には円環状をなすステータ５が固定されている。ステータ５は、径方向内側に延びる複数のティース６ａを有するステータコア６と、ティース６ａにインシュレータ７を介して巻回された巻線８とを備えている。このステータ５は、外部の制御回路Ｓから巻線８に駆動電流が供給されることで回転磁界を発生する。   An annular stator 5 is fixed to the inner peripheral surface of the yoke housing 3. The stator 5 includes a stator core 6 having a plurality of teeth 6a extending radially inward, and a winding 8 wound around the teeth 6a via an insulator 7. The stator 5 generates a rotating magnetic field when a drive current is supplied from an external control circuit S to the winding 8.

ステータ５の内側にはロータ１１が配置されている。ヨークハウジング３の底部中央及びエンドプレート４の中央部には対をなす軸受１２，１３が設けられている。この一対の軸受１２，１３によってロータ１１の回転軸１４が回転可能に支持されている。なお、回転軸１４におけるエンドプレート４側の軸方向の端部は、エンドプレート４を貫通してモータケース２の外部に突出している。   A rotor 11 is disposed inside the stator 5. A pair of bearings 12 and 13 are provided at the center of the bottom of the yoke housing 3 and the center of the end plate 4. The rotating shaft 14 of the rotor 11 is rotatably supported by the pair of bearings 12 and 13. Note that the axial end of the rotary shaft 14 on the end plate 4 side penetrates the end plate 4 and protrudes to the outside of the motor case 2.

ロータ１１は、回転軸１４に固定された一対のロータコア（すなわち第１ロータコア１５及び第２ロータコア１６）と、第１ロータコア１５と第２ロータコア１６との間に配置された界磁磁石１７と、界磁磁石１７の外周に配置された１つの整流磁石１８とを備えている。   The rotor 11 includes a pair of rotor cores (i.e., the first rotor core 15 and the second rotor core 16) fixed to the rotating shaft 14, a field magnet 17 disposed between the first rotor core 15 and the second rotor core 16, and And one rectifying magnet 18 disposed on the outer periphery of the field magnet 17.

図２及び図３に示すように、第１ロータコア１５は、円板状の第１コアベース２１と、第１コアベース２１の外周縁部で周方向に並ぶ複数（本実施形態では５個）の第１爪状磁極２２とを有している。第１コアベース２１の径方向中央部には、回転軸１４が挿通固定される貫通孔２１ａが形成されている。また、５個の第１爪状磁極２２は、第１コアベース２１の外周縁部に周方向に等間隔（７２°間隔）に設けられている。   As shown in FIGS. 2 and 3, the first rotor core 15 includes a disk-shaped first core base 21 and a plurality (in the present embodiment, five) arranged in the circumferential direction at the outer peripheral edge of the first core base 21. The first claw-shaped magnetic pole 22 is provided. A through hole 21 a into which the rotary shaft 14 is inserted and fixed is formed in the radial center portion of the first core base 21. Further, the five first claw-shaped magnetic poles 22 are provided on the outer peripheral edge of the first core base 21 at equal intervals (72 ° intervals) in the circumferential direction.

各第１爪状磁極２２は、第１コアベース２１の外周縁部から径方向外側に延びる第１径方向延出部２２ａと、第１径方向延出部２２ａの先端部（径方向外側端部）から軸方向一方に突出する第１磁極部２２ｂとから構成されている。   Each first claw-shaped magnetic pole 22 includes a first radially extending portion 22a extending radially outward from the outer peripheral edge of the first core base 21, and a distal end portion (radially outer end of the first radially extending portion 22a). Part) and a first magnetic pole part 22b protruding in one axial direction.

第１径方向延出部２２ａは、軸方向から見た形状が、径方向外側に向かうに連れて周方向の幅が広くなる扇形状をなしている。また、第１磁極部２２ｂの軸方向と直交する断面の形状は、径方向外側に向かうに連れて周方向の幅が広くなる扇形状をなしている。そして、第１爪状磁極２２の周方向の両側の側面は、共に平坦面であって平行をなしている。また、各第１磁極部２２ｂの径方向外側面は、軸方向から見てロータ１１の回転軸線を中心とする同一円上に位置する円弧状をなしている。さらに、各第１爪状磁極２２は、その周方向中心を通り周方向と直交する平面を対称面とする対称形状をなしている。   The first radial extending portion 22a has a fan shape whose shape seen from the axial direction becomes wider in the circumferential direction as it goes outward in the radial direction. Moreover, the shape of the cross section orthogonal to the axial direction of the first magnetic pole portion 22b has a fan shape in which the width in the circumferential direction becomes wider toward the outer side in the radial direction. The side surfaces on both sides in the circumferential direction of the first claw-shaped magnetic pole 22 are both flat and parallel. In addition, the radially outer surface of each first magnetic pole portion 22b has an arc shape that is located on the same circle centered on the rotation axis of the rotor 11 when viewed from the axial direction. Further, each first claw-shaped magnetic pole 22 has a symmetrical shape with a plane passing through the center in the circumferential direction and orthogonal to the circumferential direction as a symmetry plane.

図３及び図５に示すように、各第１爪状磁極２２の第１磁極部２２ｂの径方向内側の側面は、前記整流磁石１８と接着剤４１にて固定される第１コア側固定面２２ｃとなっている。各第１コア側固定面２２ｃは、軸方向から見てロータ１１の回転軸線を中心とする同一円上に位置する円弧状をなしている。そして、各第１コア側固定面２２ｃには第１流入凹部２２ｄが形成されている。各第１流入凹部２２ｄは、各第１コア側固定面２２ｃの周方向の中央部に設けられ、軸方向に沿って延びる溝状をなしている。また、第１流入凹部２２ｄは、第１コア側固定面２２ｃの軸方向の一端から他端に亘って形成されている。そして、各第１流入凹部２２ｄは、軸方向と直交する断面の形状が、周方向の幅が一定の矩形状をなすとともに、第１流入凹部２２ｄの軸方向の一端から他端まで軸方向と直交する断面の形状が一定となっている。また、各第１流入凹部２２ｄは、径方向内側及び軸方向の両側に開口している。   As shown in FIGS. 3 and 5, the radially inner side surface of the first magnetic pole portion 22 b of each first claw-shaped magnetic pole 22 is fixed to the first core side fixed surface by the rectifying magnet 18 and the adhesive 41. 22c. Each of the first core-side fixing surfaces 22c has an arc shape that is located on the same circle with the rotation axis of the rotor 11 as the center when viewed from the axial direction. A first inflow recess 22d is formed on each first core-side fixing surface 22c. Each of the first inflow recesses 22d is provided in a central portion in the circumferential direction of each of the first core-side fixing surfaces 22c and has a groove shape extending along the axial direction. The first inflow recess 22d is formed from one end to the other end in the axial direction of the first core-side fixing surface 22c. Each of the first inflow recesses 22d has a cross-sectional shape orthogonal to the axial direction having a rectangular shape with a constant circumferential width, and the axial direction from one end to the other end of the first inflow recess 22d in the axial direction. The shape of the orthogonal cross section is constant. Each of the first inflow recesses 22d is open on the radially inner side and both sides in the axial direction.

図２に示すように、第２ロータコア１６は、第１ロータコア１５と同一形状をなし、第２コアベース２３と、第２コアベース２３の外周縁部で周方向に並ぶ複数（本実施形態では５個）の第２爪状磁極２４とを有している。回転軸１４が挿通固定される貫通孔２３ａを有する第２コアベース２３は、貫通孔２１ａを有する第１コアベース２１と同一形状をなしている。また、第２径方向延出部２４ａ及び第２磁極部２４ｂから構成される第２爪状磁極２４は、第１径方向延出部２２ａ及び第１磁極部２２ｂから構成された第１爪状磁極２２と同一形状をなしている。   As shown in FIG. 2, the second rotor core 16 has the same shape as the first rotor core 15, and a plurality of second core bases 23 are arranged in the circumferential direction at the outer peripheral edge of the second core base 23 (in the present embodiment). 5) second claw-shaped magnetic poles 24. The second core base 23 having a through hole 23a through which the rotary shaft 14 is inserted and fixed has the same shape as the first core base 21 having the through hole 21a. The second claw-shaped magnetic pole 24 composed of the second radially extending portion 24a and the second magnetic pole portion 24b is a first claw-shaped composed of the first radial extending portion 22a and the first magnetic pole portion 22b. It has the same shape as the magnetic pole 22.

また、各第２爪状磁極２４の第２磁極部２４ｂの径方向内側の側面は、前記整流磁石１８と接着剤４１（図２では図示略）にて固定される第２コア側固定面２４ｃとなっている。第２コア側固定面２４ｃは、第１コア側固定面２２ｃ（図３参照）と同一形状をなしている。そして、第２コア側固定面２４ｃには、第１流入凹部２２ｄ（図３参照）と同一形状をなす第２流入凹部２４ｄが形成されている。   Further, the radially inner side surface of the second magnetic pole portion 24b of each second claw-shaped magnetic pole 24 is fixed to the second core-side fixing surface 24c fixed by the rectifying magnet 18 and the adhesive 41 (not shown in FIG. 2). It has become. The second core-side fixing surface 24c has the same shape as the first core-side fixing surface 22c (see FIG. 3). A second inflow recess 24d having the same shape as the first inflow recess 22d (see FIG. 3) is formed in the second core-side fixing surface 24c.

図１、図２及び図６に示すように、第１ロータコア１５と第２ロータコア１６とは、貫通孔２１ａ，２３ａに回転軸１４が圧入されることで、互いの軸方向の間隔が保持されつつ同回転軸１４に固定されている。なお、第１及び第２ロータコア１５，１６は、第１ロータコア１５と第２ロータコア１６との間に界磁磁石１７及び整流磁石１８を挟んだ状態で回転軸１４に固定されている。また、第１ロータコア１５と第２ロータコア１６とは、それらの磁極部２２ｂ，２４ｂの先端が互いに反対方向を向くように、且つ周方向に隣り合う第１爪状磁極２２の間に第２爪状磁極２４がそれぞれ配置されるように軸方向に重ねられて回転軸１４に固定されている。そして、回転軸１４に固定された第１及び第２ロータコア１５，１６においては、第１磁極部２２ｂと第２磁極部２４ｂとは、周方向に交互に並ぶとともに、周方向に等間隔（３６°間隔）に位置する。   As shown in FIGS. 1, 2, and 6, the first rotor core 15 and the second rotor core 16 maintain the axial distance between each other when the rotary shaft 14 is press-fitted into the through holes 21 a and 23 a. However, it is fixed to the rotary shaft 14. The first and second rotor cores 15 and 16 are fixed to the rotating shaft 14 with the field magnet 17 and the rectifying magnet 18 sandwiched between the first rotor core 15 and the second rotor core 16. Further, the first rotor core 15 and the second rotor core 16 have a second claw between the first claw-shaped magnetic poles 22 adjacent to each other in the circumferential direction so that the tips of the magnetic pole portions 22b and 24b face in opposite directions. The magnetic poles 24 are overlapped in the axial direction so as to be arranged, and are fixed to the rotary shaft 14. And in the 1st and 2nd rotor cores 15 and 16 fixed to the rotating shaft 14, while the 1st magnetic pole part 22b and the 2nd magnetic pole part 24b are located in a line in the circumferential direction alternately, equidistant (36 in the circumferential direction) (° interval).

図１、図２及び図７に示すように、第１及び第２ロータコア１５，１６の組み付け状態において、第１コアベース２１と第２コアベース２３とは互いに平行をなし、それらの間に界磁磁石１７が配置されている。界磁磁石１７は、例えばフェライト磁石よりなる円板状の永久磁石である。界磁磁石１７の径方向の中央部には、回転軸１４が挿通される貫通孔１７ａが形成されている。そして、界磁磁石１７の軸方向の一端面（図２において上側の端面）が第１コアベース２１と、界磁磁石１７の軸方向の他端面（図２において下側の端面）が第２コアベース２３とそれぞれ当接し、界磁磁石１７は第１コアベース２１と第２コアベース２３との間に軸方向に挟持固定されている。なお、界磁磁石１７の外径は、各コアベース２１，２３の外径と一致するように設定されている。   As shown in FIGS. 1, 2 and 7, in the assembled state of the first and second rotor cores 15 and 16, the first core base 21 and the second core base 23 are parallel to each other, and a boundary is formed between them. A magnet 17 is disposed. The field magnet 17 is a disk-shaped permanent magnet made of, for example, a ferrite magnet. A through hole 17 a through which the rotating shaft 14 is inserted is formed at the radial center of the field magnet 17. One end surface in the axial direction of the field magnet 17 (upper end surface in FIG. 2) is the first core base 21, and the other end surface in the axial direction of the field magnet 17 (lower end surface in FIG. 2) is the second. The field magnet 17 is in contact with the core base 23, and is fixed between the first core base 21 and the second core base 23 in the axial direction. The outer diameter of the field magnet 17 is set so as to coincide with the outer diameter of each core base 21, 23.

界磁磁石１７は、第１爪状磁極２２がＮ極、第２爪状磁極２４がＳ極として機能するように軸方向に磁化されている。すなわち、界磁磁石１７は、第１爪状磁極２２と第２爪状磁極２４とを周方向に異なる磁極として機能させるように、第１コアベース２１側がＮ極、第２コアベース２３側がＳ極となるように軸方向に磁化されている。このように、本実施形態のロータ１１は、界磁磁石１７を用いた所謂ランデル型構造のロータである。そして、ロータ１１は、Ｎ極となる５つの第１爪状磁極２２と、Ｓ極となる５つの第２爪状磁極２４とが周方向に交互に配置されており、極数が１０極（対極数５個）となっている。   The field magnet 17 is magnetized in the axial direction so that the first claw-shaped magnetic pole 22 functions as an N pole and the second claw-shaped magnetic pole 24 functions as an S pole. That is, in the field magnet 17, the first core base 21 side is N-pole and the second core base 23 side is S so that the first claw-shaped magnetic pole 22 and the second claw-shaped magnetic pole 24 function as different magnetic poles in the circumferential direction. It is magnetized in the axial direction so as to be a pole. Thus, the rotor 11 of the present embodiment is a so-called Landel type rotor using the field magnet 17. In the rotor 11, five first claw-shaped magnetic poles 22 serving as N poles and five second claw-shaped magnetic poles 24 serving as S poles are alternately arranged in the circumferential direction, and the number of poles is 10 ( The number of counter electrodes is 5).

図２及び図４に示すように、整流磁石１８は、例えばネオジボンド磁石よりなる。整流磁石１８は、界磁磁石１７の外周を囲む略円環状をなし、界磁磁石１７の外周で第１及び第２爪状磁極２２，２４の周囲に配置されている。整流磁石１８は、第１及び第２背面磁石部３１，３２と、第１及び第２極間磁石部３３，３４とを有している。   As shown in FIG.2 and FIG.4, the rectifier magnet 18 consists of a neodymium bond magnet, for example. The rectifying magnet 18 has a substantially annular shape surrounding the outer periphery of the field magnet 17, and is disposed around the first and second claw-shaped magnetic poles 22 and 24 on the outer periphery of the field magnet 17. The rectifying magnet 18 includes first and second back magnet portions 31 and 32 and first and second interpole magnet portions 33 and 34.

図４、図６及び図７に示すように、第１背面磁石部３１は、第１ロータコア１５の各第１爪状磁極２２の背面（すなわち、径方向内側の面であって本実施形態では第１コア側固定面２２ｃ）と、第２コアベース２３の外周面２３ｂとの間に配置されている。また、第２背面磁石部３２は、第２ロータコア１６の各第２爪状磁極２４の背面（すなわち、径方向内側の面であって本実施形態では第２コア側固定面２４ｃ）と、第１コアベース２１の外周面２１ｂとの間に配置されている。従って、整流磁石１８においては、周方向に等間隔（７２°間隔）となる５箇所に第１背面磁石部３１が設けられるとともに、周方向に隣り合う第１背面磁石部３１の間に第２背面磁石部３２が設けられている。そして、第１背面磁石部３１と第２背面磁石部３２とは周方向に交互に３６°間隔に設けられている。   As shown in FIGS. 4, 6, and 7, the first back magnet portion 31 is a back surface (that is, a radially inner surface of each first claw-shaped magnetic pole 22 of the first rotor core 15 in the present embodiment. The first core-side fixing surface 22 c) and the outer peripheral surface 23 b of the second core base 23 are disposed. The second back magnet part 32 includes a back surface of each second claw-shaped magnetic pole 24 of the second rotor core 16 (that is, a radially inner surface, which is the second core-side fixing surface 24c in the present embodiment), It is arrange | positioned between the outer peripheral surfaces 21b of 1 core base 21. As shown in FIG. Therefore, in the rectifier magnet 18, the first back magnet portions 31 are provided at five locations that are equally spaced in the circumferential direction (72 ° intervals), and the second back magnet portions 31 that are adjacent between the first back magnet portions 31 in the circumferential direction are provided. A back magnet part 32 is provided. And the 1st back magnet part 31 and the 2nd back magnet part 32 are provided at intervals of 36 degrees by turns in the peripheral direction.

図４、図５及び図６に示すように、各第１背面磁石部３１は、径方向の幅が一定の円弧状に形成されている。各第１背面磁石部３１の径方向の幅は、第１コア側固定面２２ｃと第２コアベース２３の外周面２３ｂとの間の間隔と略等しい値となっている。そして、各第１背面磁石部３１の径方向外側の側面は、第１コア側固定面２２ｃと接着剤４１にて固定される第１磁石側固定面３１ａとなっている。第１磁石側固定面３１ａは、第１コア側固定面２２ｃの曲率と略等しい曲率の円弧状をなしている。また、第１背面磁石部３１の径方向内側の側面は、第２コアベース２３の外周面２３ｂの曲率と略等しい曲率の円弧状をなしている。そして、各第１背面磁石部３１の周方向の一端部（図４において反時計方向側の端部）に第１極間磁石部３３が一体に形成されるとともに、周方向の他端部（図４において時計方向側の端部）に第２極間磁石部３４が一体に形成されている。   As shown in FIGS. 4, 5, and 6, each first back magnet portion 31 is formed in an arc shape having a constant radial width. The radial width of each first back magnet part 31 has a value substantially equal to the interval between the first core-side fixing surface 22 c and the outer peripheral surface 23 b of the second core base 23. And the side surface of the radial direction outer side of each 1st back magnet part 31 is the 1st magnet side fixing surface 31a fixed with the 1st core side fixing surface 22c and the adhesive agent 41. As shown in FIG. The first magnet side fixing surface 31a has an arc shape with a curvature substantially equal to the curvature of the first core side fixing surface 22c. In addition, the radially inner side surface of the first back magnet part 31 has an arc shape with a curvature substantially equal to the curvature of the outer peripheral surface 23 b of the second core base 23. The first interpole magnet portion 33 is integrally formed at one end portion in the circumferential direction of each first back magnet portion 31 (the end portion on the counterclockwise direction in FIG. 4), and the other end portion in the circumferential direction ( A second inter-pole magnet portion 34 is integrally formed on the end portion on the clockwise side in FIG.

各第２背面磁石部３２は、第１背面磁石部３１と同一形状をなしている。だたし、第１背面磁石部３１が第１及び第２極間磁石部３３，３４の軸方向の一端側（図４において下端側）に形成されているのに対し、第２背面磁石部３２は、第１及び第２極間磁石部３３，３４の軸方向の他端側（図４において上端側）に形成されている。そして、各第２背面磁石部３２の径方向外側の側面は、第２コア側固定面２４ｃと接着剤４１にて固定される第２磁石側固定面３２ａとなっている。第２磁石側固定面３２ａは、第２コア側固定面２４ｃの曲率と略等しい曲率の円弧状をなしている。   Each second back magnet part 32 has the same shape as the first back magnet part 31. However, the first back magnet portion 31 is formed on one end side (the lower end side in FIG. 4) of the first and second interpole magnet portions 33 and 34 in the axial direction, whereas the second back magnet portion 31 is formed. 32 is formed on the other end side (the upper end side in FIG. 4) of the first and second interpole magnet portions 33, 34 in the axial direction. The side surface on the radially outer side of each second back magnet part 32 is a second magnet side fixing surface 32 a that is fixed by the second core side fixing surface 24 c and the adhesive 41. The second magnet side fixing surface 32a has an arc shape with a curvature substantially equal to the curvature of the second core side fixing surface 24c.

そして、第１背面磁石部３１は、第１爪状磁極２２の第１コア側固定面２２ｃと対向する側が第１爪状磁極２２と同極のＮ極に、第２コアベース２３の外周面２３ｂと対向する側が第２コアベース２３と同極のＳ極となるように磁化されている。また、第２背面磁石部３２は、第２爪状磁極２４の第２コア側固定面２４ｃと対向する側が第２爪状磁極２４と同極のＳ極に、第１コアベース２１の外周面２１ｂと対向する側が第１コアベース２１と同極のＮ極となるように磁化されている。   The first back magnet portion 31 has an outer peripheral surface of the second core base 23 on the side opposite to the first core-side fixed surface 22c of the first claw-shaped magnetic pole 22 and the N pole having the same polarity as the first claw-shaped magnetic pole 22. The side facing 23 b is magnetized so as to be the S pole having the same polarity as the second core base 23. In addition, the second back magnet portion 32 has an outer peripheral surface of the first core base 21 on the side opposite to the second core-side fixed surface 24c of the second claw-shaped magnetic pole 24 and the S pole having the same polarity as the second claw-shaped magnetic pole 24 The side facing 21 b is magnetized so as to be an N pole having the same polarity as the first core base 21.

図４乃至図７に示すように、第１及び第２極間磁石部３３，３４は、周方向に隣り合う第１爪状磁極２２と第２爪状磁極２４との周方向の間に配置されている。詳述すると、第１極間磁石部３３は、第１爪状磁極２２の一方の周方向端面２２ｅ（図６において反時計方向側の端面）と第２爪状磁極２４の他方の周方向端面２４ｅ（図６において時計方向側の端面）との間に配置されている。そして、第２極間磁石部３４は、第１爪状磁極２２の他方の周方向端面２２ｆ（図６において時計方向側の端面）と第２爪状磁極２４の一方の周方向端面２４ｆ（図６において反時計方向側の端面）との間に配置されている。   As shown in FIGS. 4 to 7, the first and second interpole magnet portions 33 and 34 are arranged between the first claw-shaped magnetic pole 22 and the second claw-shaped magnetic pole 24 that are adjacent in the circumferential direction. Has been. More specifically, the first interpole magnet portion 33 includes one circumferential end face 22e (the counterclockwise end face in FIG. 6) of the first claw-shaped magnetic pole 22 and the other circumferential end face of the second claw-shaped magnetic pole 24. 24e (the end surface on the clockwise side in FIG. 6). The second interpole magnet portion 34 has the other circumferential end face 22f (the end face on the clockwise side in FIG. 6) of the first claw-shaped magnetic pole 22 and one circumferential end face 24f (see FIG. 6). 6 and the counterclockwise end face).

第１極間磁石部３３は、軸方向と直交する断面の形状が扇形状をなす柱状をなしている。第１極間磁石部３３の周方向の幅は、第１爪状磁極２２の一方の周方向端面２２ｅと第２爪状磁極２４の他方の周方向端面２４ｅとの間の周方向の間隔と略等しく形成されている。また、第１極間磁石部３３の径方向の幅は、第１爪状磁極２２の径方向の幅と略等しく形成されている。さらに、第１極間磁石部３３の軸方向の長さは第１爪状磁極２２の軸方向の長さと等しく形成されている。そして、第１極間磁石部３３の径方向外側の側面は、軸方向から見て、第１及び第２爪状磁極２２，２４の径方向外側の側面と共に、ロータ１１の回転軸線を中心とすると同一円上に位置する。また、第２極間磁石部３４は、第１極間磁石部３３と同一形状をなしている。そして、第１及び第２極間磁石部３３，３４は、第１及び第２爪状磁極２２，２４のそれぞれと同極性の面が対向するように周方向に磁化されている。すなわち、第１及び第２極間磁石部３３，３４は、第１爪状磁極２２側がＮ極、第２爪状磁極２４側がＳ極となるように周方向に磁化されている。   The first interpole magnet portion 33 has a columnar shape in which the cross-sectional shape orthogonal to the axial direction forms a fan shape. The circumferential width of the first interpole magnet portion 33 is the circumferential distance between one circumferential end surface 22e of the first claw-shaped magnetic pole 22 and the other circumferential end surface 24e of the second claw-shaped magnetic pole 24. It is formed approximately equally. Further, the radial width of the first interpole magnet portion 33 is formed to be substantially equal to the radial width of the first claw-shaped magnetic pole 22. Further, the axial length of the first interpole magnet portion 33 is formed to be equal to the axial length of the first claw-shaped magnetic pole 22. Then, the radially outer side surface of the first interpole magnet portion 33 is centered on the rotational axis of the rotor 11 together with the radially outer side surfaces of the first and second claw-shaped magnetic poles 22 and 24 when viewed from the axial direction. Then it is located on the same circle. The second interpole magnet portion 34 has the same shape as the first interpole magnet portion 33. The first and second interpole magnet portions 33 and 34 are magnetized in the circumferential direction so that surfaces having the same polarity as the first and second claw-shaped magnetic poles 22 and 24 face each other. That is, the first and second interpole magnet portions 33 and 34 are magnetized in the circumferential direction so that the first claw-shaped magnetic pole 22 side is the N pole and the second claw-shaped magnetic pole 24 side is the S pole.

図１に示すように、回転軸１４には、略円板状をなすセンサ磁石固定部材５１を介してセンサ磁石５２が固定されている。センサ磁石固定部材５１は、回転軸１４における軸受１３と第１ロータコア１５との間となる部分に外嵌されて固定されている。センサ磁石固定部材５１の外径は、第１ロータコア１５の外径より小さく且つ第１コアベース２１の外径より大きい値となっている。そして、センサ磁石５２は、センサ磁石固定部材５１の外周縁部に沿った円環状をなしている。さらに、センサ磁石５２は、センサ磁石固定部材５１を挟んで第１爪状磁極２２と軸方向に対向する。また、センサ磁石５２は、Ｎ極とＳ極とが周方向に交互となるように磁化されている。   As shown in FIG. 1, a sensor magnet 52 is fixed to the rotating shaft 14 via a sensor magnet fixing member 51 having a substantially disk shape. The sensor magnet fixing member 51 is externally fitted and fixed to a portion of the rotary shaft 14 between the bearing 13 and the first rotor core 15. The outer diameter of the sensor magnet fixing member 51 is smaller than the outer diameter of the first rotor core 15 and larger than the outer diameter of the first core base 21. The sensor magnet 52 has an annular shape along the outer peripheral edge of the sensor magnet fixing member 51. Further, the sensor magnet 52 faces the first claw-shaped magnetic pole 22 in the axial direction with the sensor magnet fixing member 51 interposed therebetween. The sensor magnet 52 is magnetized so that the N pole and the S pole are alternately arranged in the circumferential direction.

また、エンドプレート４には、センサ磁石５２と軸方向に対向するように磁気センサとしてのホールＩＣ５３が設けられている。ホールＩＣ５３は、センサ磁石５２に基づくＮ極とＳ極との磁界を感知するとそれぞれＨレベルの検出信号とＬレベルの検出信号とを前記制御回路Ｓに出力する。   The end plate 4 is provided with a Hall IC 53 as a magnetic sensor so as to face the sensor magnet 52 in the axial direction. The Hall IC 53 outputs an H level detection signal and an L level detection signal to the control circuit S when sensing the magnetic fields of the N pole and the S pole based on the sensor magnet 52.

次に、本第１実施形態の作用について説明する。
制御回路Ｓから巻線８に３相の駆動電流が供給されると、ステータ５にて回転磁界が発生され、ロータ１１が回転駆動される。この際、ホールＩＣ５３と対向するセンサ磁石５２が回転することで、ホールＩＣ５３から出力される検出信号のレベルがロータ１１の回転角度（位置）に応じて切り替わる。そして、当該検出信号に基づいて制御回路Ｓから巻線８に最適なタイミングで切り替わる３相の駆動電流が供給される。これにより、良好に回転磁界が発生され、ロータ１１が良好に連続して回転駆動される。 Next, the operation of the first embodiment will be described.
When a three-phase drive current is supplied from the control circuit S to the winding 8, a rotating magnetic field is generated in the stator 5 and the rotor 11 is driven to rotate. At this time, the level of the detection signal output from the Hall IC 53 is switched according to the rotation angle (position) of the rotor 11 as the sensor magnet 52 facing the Hall IC 53 rotates. Based on the detection signal, a three-phase drive current that is switched to the winding 8 from the control circuit S at an optimal timing is supplied. As a result, a rotating magnetic field is generated satisfactorily, and the rotor 11 is driven to rotate continuously.

図２、図５及び図６に示すように、このようなモータ１において、ロータ１１に備えられた第１及び第２ロータコア１５，１６と整流磁石１８とは接着剤４１にて固定されている。詳しくは、第１爪状磁極２２の第１コア側固定面２２ｃと、第１背面磁石部３１の第１磁石側固定面３１ａとが接着剤４１にて固定されている。さらに、第２爪状磁極２４の第２コア側固定面２４ｃと、第２背面磁石部３２の第２磁石側固定面３２ａとが接着剤４１にて固定されている。   As shown in FIGS. 2, 5, and 6, in such a motor 1, the first and second rotor cores 15 and 16 provided in the rotor 11 and the rectifying magnet 18 are fixed by an adhesive 41. . Specifically, the first core-side fixing surface 22 c of the first claw-shaped magnetic pole 22 and the first magnet-side fixing surface 31 a of the first back magnet portion 31 are fixed by the adhesive 41. Further, the second core-side fixing surface 24 c of the second claw-shaped magnetic pole 24 and the second magnet-side fixing surface 32 a of the second back magnet part 32 are fixed by an adhesive 41.

第１コア側固定面２２ｃと第１磁石側固定面３１ａとを接着固定する際には、第１コア側固定面２２ｃに接着剤４１を塗布した後に、第１コア側固定面２２ｃと第１磁石側固定面３１ａとを重ね合わせる。このとき、第１コア側固定面２２ｃには第１流入凹部２２ｄが設けられているため、第１コア側固定面２２ｃと第１磁石側固定面３１ａとの間の接着剤４１は、第１流入凹部２２ｄ内に流入可能である。なお、接着剤４１は、第１磁石側固定面３１ａに塗布してもよいし、第１コア側固定面２２ｃと第１磁石側固定面３１ａとの両方に塗布してもよい。   When the first core-side fixing surface 22c and the first magnet-side fixing surface 31a are bonded and fixed, after the adhesive 41 is applied to the first core-side fixing surface 22c, the first core-side fixing surface 22c and the first magnet-side fixing surface 22c The magnet side fixed surface 31a is overlapped. At this time, since the first inflow recess 22d is provided in the first core-side fixing surface 22c, the adhesive 41 between the first core-side fixing surface 22c and the first magnet-side fixing surface 31a is the first It can flow into the inflow recess 22d. The adhesive 41 may be applied to the first magnet side fixing surface 31a, or may be applied to both the first core side fixing surface 22c and the first magnet side fixing surface 31a.

同様に、第２コア側固定面２４ｃと第２磁石側固定面３２ａとを接着固定する際には、第２コア側固定面２４ｃに接着剤４１を塗布した後に、第２コア側固定面２４ｃと第２磁石側固定面３２ａとを重ね合わせる。このとき、第２コア側固定面２４ｃには第２流入凹部２４ｄが設けられているため、第２コア側固定面２４ｃと第２磁石側固定面３２ａとの間の接着剤４１は、第２流入凹部２４ｄ内に流入可能である。なお、接着剤４１は、第２磁石側固定面３２ａに塗布してもよいし、第２コア側固定面２４ｃと第２磁石側固定面３２ａとの両方に塗布してもよい。   Similarly, when the second core side fixing surface 24c and the second magnet side fixing surface 32a are bonded and fixed, after the adhesive 41 is applied to the second core side fixing surface 24c, the second core side fixing surface 24c is applied. And the second magnet side fixing surface 32a are overlapped. At this time, since the second inflow recess 24d is provided in the second core-side fixing surface 24c, the adhesive 41 between the second core-side fixing surface 24c and the second magnet-side fixing surface 32a is the second It can flow into the inflow recess 24d. The adhesive 41 may be applied to the second magnet side fixing surface 32a, or may be applied to both the second core side fixing surface 24c and the second magnet side fixing surface 32a.

接着剤４１が硬化することにより、第１コア側固定面２２ｃと第１磁石側固定面３１ａ、及び、第２コア側固定面２４ｃと第２磁石側固定面３２ａがそれぞれ接着剤４１にて固定される。これにより、第１及び第２ロータコア１５，１６と整流磁石１８とが接着剤４１にて固定される。   When the adhesive 41 is cured, the first core side fixing surface 22c and the first magnet side fixing surface 31a, and the second core side fixing surface 24c and the second magnet side fixing surface 32a are fixed by the adhesive 41, respectively. Is done. Thereby, the first and second rotor cores 15 and 16 and the rectifying magnet 18 are fixed by the adhesive 41.

次に、本第１実施形態の特徴的な効果を記載する。
（１）第１及び第２ロータコア１５，１６と整流磁石１８とを接着剤４１により固定する。そして、第１コア側固定面２２ｃには第１流入凹部２２ｄが形成されているため、互いに固定される第１コア側固定面２２ｃと第１磁石側固定面３１ａとを重ね合わせたときに、第１コア側固定面２２ｃと第１磁石側固定面３１ａとの間に介在された接着剤４１が第１流入凹部２２ｄに流入可能である。また、第２コア側固定面２４ｃには第２流入凹部２４ｄが形成されているため、互いに固定される第２コア側固定面２４ｃと第２磁石側固定面３２ａとを重ね合わせたときに、第２コア側固定面２４ｃと第２磁石側固定面３２ａとの間に介在された接着剤４１が第２流入凹部２４ｄに流入可能である。従って、互いに固定される第１コア側固定面２２ｃと第１磁石側固定面３１ａとの間、及び、互いに固定される第２コア側固定面２４ｃと第２磁石側固定面３２ａとの間から接着剤４１が外部に漏れ出ることが抑制される。そのため、第１コア側固定面２２ｃに塗布された接着剤４１は第１コア側固定面２２ｃと第１磁石側固定面３１ａとの間に留まり易くなり、第２コア側固定面２４ｃに塗布された接着剤４１は第２コア側固定面２４ｃと第２磁石側固定面３２ａとの間に留まり易くなる。よって、接着剤４１にて整流磁石１８を良好に固定することができる。 Next, characteristic effects of the first embodiment will be described.
(1) The first and second rotor cores 15 and 16 and the rectifying magnet 18 are fixed with an adhesive 41. And since the 1st inflow recessed part 22d is formed in the 1st core side fixed surface 22c, when the 1st core side fixed surface 22c and the 1st magnet side fixed surface 31a which are mutually fixed are piled up, The adhesive 41 interposed between the first core-side fixing surface 22c and the first magnet-side fixing surface 31a can flow into the first inflow recess 22d. Further, since the second inflow recess 24d is formed in the second core-side fixing surface 24c, when the second core-side fixing surface 24c and the second magnet-side fixing surface 32a that are fixed to each other are overlapped, The adhesive 41 interposed between the second core-side fixing surface 24c and the second magnet-side fixing surface 32a can flow into the second inflow recess 24d. Therefore, from between the first core side fixing surface 22c and the first magnet side fixing surface 31a fixed to each other, and from between the second core side fixing surface 24c and the second magnet side fixing surface 32a fixed to each other. Leakage of the adhesive 41 to the outside is suppressed. Therefore, the adhesive 41 applied to the first core-side fixing surface 22c tends to stay between the first core-side fixing surface 22c and the first magnet-side fixing surface 31a, and is applied to the second core-side fixing surface 24c. The adhesive 41 tends to stay between the second core-side fixing surface 24c and the second magnet-side fixing surface 32a. Therefore, the rectifier magnet 18 can be satisfactorily fixed by the adhesive 41.

（２）第１流入凹部２２ｄ及び第２流入凹部２４ｄは軸方向に沿って延びる溝状という簡単な形状である。従って、第１流入凹部２２ｄを第１コア側固定面２２ｃに、第２流入凹部２４ｄを第２コア側固定面２４ｃにそれぞれ容易に形成することができる。また、第１流入凹部２２ｄは、第１コア側固定面２２ｃの軸方向の一端から他端まで軸方向に沿って延びているため、第１コア側固定面２２ｃにおける軸方向の何れの位置においても接着剤４１が第１流入凹部２２ｄに流入できる。同様に、第２流入凹部２４ｄは、第２コア側固定面２４ｃの軸方向の一端から他端まで軸方向に沿って延びているため、第２コア側固定面２４ｃにおける軸方向の何れの位置においても接着剤４１が第２流入凹部２４ｄに流入できる。従って、互いに固定される第１コア側固定面２２ｃと第１磁石側固定面３１ａとの間、及び、互いに固定される第２コア側固定面２４ｃと第２磁石側固定面３２ａとの間から接着剤４１が外部に漏れ出ることがさらに抑制される。そのため、第１コア側固定面２２ｃに塗布された接着剤４１は第１コア側固定面２２ｃと第１磁石側固定面３１ａとの間にさらに留まり易くなり、第２コア側固定面２４ｃに塗布された接着剤４１は第２コア側固定面２４ｃと第２磁石側固定面３２ａとの間にさらに留まり易くなる。よって、接着剤４１にて整流磁石１８をさらに良好に固定することができる。   (2) The first inflow recess 22d and the second inflow recess 24d have a simple shape called a groove extending along the axial direction. Accordingly, the first inflow recess 22d can be easily formed in the first core-side fixing surface 22c, and the second inflow recess 24d can be easily formed in the second core-side fixing surface 24c. Further, since the first inflow recess 22d extends along the axial direction from one end to the other end in the axial direction of the first core-side fixing surface 22c, at any position in the axial direction on the first core-side fixing surface 22c. Also, the adhesive 41 can flow into the first inflow recess 22d. Similarly, the second inflow recess 24d extends along the axial direction from one end to the other end in the axial direction of the second core-side fixing surface 24c, and therefore any position in the axial direction on the second core-side fixing surface 24c. Also, the adhesive 41 can flow into the second inflow recess 24d. Therefore, from between the first core side fixing surface 22c and the first magnet side fixing surface 31a fixed to each other, and from between the second core side fixing surface 24c and the second magnet side fixing surface 32a fixed to each other. It is further suppressed that the adhesive 41 leaks outside. Therefore, the adhesive 41 applied to the first core-side fixing surface 22c is more likely to stay between the first core-side fixing surface 22c and the first magnet-side fixing surface 31a, and is applied to the second core-side fixing surface 24c. The adhesive 41 thus made is more likely to stay between the second core-side fixing surface 24c and the second magnet-side fixing surface 32a. Therefore, the rectifier magnet 18 can be fixed more favorably with the adhesive 41.

（３）接着剤４１によって整流磁石１８を第１及び第２ロータコア１５，１６に容易に固定することができる。
（第２実施形態）
以下、モータの第２実施形態について説明する。なお、本第２実施形態では、上記第１実施形態と同一の構成に同一の符号を付してその説明を省略する。 (3) The rectifier magnet 18 can be easily fixed to the first and second rotor cores 15 and 16 by the adhesive 41.
(Second Embodiment)
Hereinafter, a second embodiment of the motor will be described. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

図８及び図９（ａ）に示す本第２実施形態のロータ６１は、上記第１実施形態のロータ１１に代えてモータ１に備えられるものである。
ロータ６１は、回転軸１４に固定された円筒状の固定筒６２と、固定筒６２に固定された対の第１及び第２ロータコア６３，６４と、第１及び第２ロータコア６３，６４の間に配置された界磁磁石６５と、界磁磁石６５の外周に配置された第１及び第２背面磁石６６，６７並びに第１及び第２極間磁石６８，６９とを備えている。 A rotor 61 of the second embodiment shown in FIGS. 8 and 9A is provided in the motor 1 in place of the rotor 11 of the first embodiment.
The rotor 61 includes a cylindrical fixed cylinder 62 fixed to the rotating shaft 14, a pair of first and second rotor cores 63 and 64 fixed to the fixed cylinder 62, and the first and second rotor cores 63 and 64. And the first and second back magnets 66 and 67 and the first and second interpole magnets 68 and 69 disposed on the outer periphery of the field magnet 65.

第１ロータコア６３は、軟磁性材よりなる電磁鋼板にて形成され、円板状の第１コアベース７１と、第１コアベース７１の外周縁部で周方向に並ぶ複数（本実施形態では４個）の第１爪状磁極７２とを有している。第１コアベース７１の径方向中央部には、固定筒６２が挿通固定される貫通孔７１ａが形成されている。また、４個の第１爪状磁極７２は、第１コアベース７１の外周縁部に周方向に等間隔（９０°間隔）に設けられている。   The first rotor core 63 is formed of a magnetic steel plate made of a soft magnetic material, and includes a disk-shaped first core base 71 and a plurality (four in this embodiment) arranged in the circumferential direction at the outer peripheral edge of the first core base 71. ) First claw-shaped magnetic poles 72. A through hole 71 a into which the fixed cylinder 62 is inserted and fixed is formed at the radial center of the first core base 71. The four first claw-shaped magnetic poles 72 are provided at equal intervals (90 ° intervals) in the circumferential direction on the outer peripheral edge of the first core base 71.

各第１爪状磁極７２は、第１コアベース７１の外周縁部から径方向外側に延びる第１径方向延出部７２ａと、第１径方向延出部７２ａの先端部（径方向外側端部）から軸方向一方に突出する第１磁極部７２ｂとから構成されている。第１径方向延出部７２ａは、軸方向から見た形状が、径方向外側に向かうに連れて周方向の幅が広くなる扇形状をなしている。また、第１磁極部７２ｂの軸方向と直交する断面の形状は、径方向外側に向かうに連れて周方向の幅が広くなる扇形状をなしている。そして、各第１磁極部７２ｂの径方向外側の側面は、軸方向から見てロータ６１の回転軸線を中心とする同一円上に位置する円弧状をなしている。さらに、４個の第１爪状磁極７２の第１磁極部７２ｂの径方向内側の側面は、軸方向から見てロータ６１の回転軸線を中心とする同一円上に位置する円弧状をなしている。また、第１爪状磁極７２の周方向の両端面は、第１極間磁石６８もしくは第２極間磁石６９と接着剤４１にて固定される第１コア側固定面７２ｃとなっている。第１コア側固定面７２ｃは、径方向に沿って延びる平面状をなすとともに、軸方向と平行をなしている。そして、各第１爪状磁極７２は、その周方向中心を通り周方向と直交する平面を対称面とする対称形状をなしている。   Each first claw-shaped magnetic pole 72 includes a first radial extension 72 a extending radially outward from the outer peripheral edge of the first core base 71, and a distal end (radial outer end) of the first radial extension 72 a. Part) and a first magnetic pole part 72b protruding in one axial direction. The first radially extending portion 72a has a fan shape in which the shape seen from the axial direction becomes wider in the circumferential direction as it goes outward in the radial direction. Moreover, the shape of the cross section orthogonal to the axial direction of the first magnetic pole portion 72b is a fan shape in which the width in the circumferential direction becomes wider toward the outside in the radial direction. Further, the radially outer side surface of each first magnetic pole portion 72b has an arcuate shape located on the same circle centered on the rotation axis of the rotor 61 when viewed from the axial direction. Further, the radially inner side surfaces of the first magnetic pole portions 72b of the four first claw-shaped magnetic poles 72 have an arc shape located on the same circle centering on the rotation axis of the rotor 61 as viewed from the axial direction. Yes. Further, both end surfaces in the circumferential direction of the first claw-shaped magnetic pole 72 are first core-side fixing surfaces 72c fixed by the first interpole magnet 68 or the second interpole magnet 69 and the adhesive 41. The first core-side fixing surface 72c has a planar shape extending in the radial direction and is parallel to the axial direction. Each first claw-shaped magnetic pole 72 has a symmetrical shape with a plane passing through the center in the circumferential direction and orthogonal to the circumferential direction as a symmetry plane.

第２ロータコア６４は、第１ロータコア６３と同一形状をなし、第２コアベース８１と、第２コアベース８１の外周縁部で周方向に並ぶ複数（本実施形態では４個）の第２爪状磁極８２とを有している。固定筒６２が挿通固定される貫通孔８１ａを有する第２コアベース８１は、貫通孔７１ａを有する第１コアベース７１と同一形状をなしている。また、第２径方向延出部８２ａ及び第２磁極部８２ｂから構成される第２爪状磁極８２は、第１径方向延出部７２ａ及び第１磁極部７２ｂから構成された第１爪状磁極７２と同一形状をなしている。また、第２爪状磁極８２の周方向の両端面は、第１極間磁石６８もしくは第２極間磁石６９と接着剤４１にて固定される第２コア側固定面８２ｃとなっている。第２コア側固定面８２ｃは、前記第１コア側固定面７２ｃと同様に、径方向に沿って延びる平面状をなすとともに、軸方向と平行をなしている。   The second rotor core 64 has the same shape as the first rotor core 63, and the second core base 81 and a plurality of (four in this embodiment) second claws arranged in the circumferential direction on the outer peripheral edge of the second core base 81. And a magnetic pole 82. The second core base 81 having the through hole 81a through which the fixed cylinder 62 is inserted and fixed has the same shape as the first core base 71 having the through hole 71a. The second claw-shaped magnetic pole 82 composed of the second radially extending portion 82a and the second magnetic pole portion 82b is a first claw-shaped composed of the first radial extending portion 72a and the first magnetic pole portion 72b. It has the same shape as the magnetic pole 72. In addition, both end surfaces in the circumferential direction of the second claw-shaped magnetic pole 82 are second core-side fixing surfaces 82 c that are fixed by the first interpole magnet 68 or the second interpole magnet 69 and the adhesive 41. Similarly to the first core-side fixing surface 72c, the second core-side fixing surface 82c has a planar shape extending along the radial direction and is parallel to the axial direction.

第１ロータコア６３と第２ロータコア６４とは、貫通孔７１ａ，８１ａに固定筒６２が圧入されることで、互いの軸方向の間隔が保持されつつ同固定筒６２に固定されている。そして、固定筒６２が回転軸１４に外嵌固定されることで、第１ロータコア６３及び第２ロータコア６４は固定筒６２を介して回転軸１４に固定されている。なお、第１及び第２ロータコア６３，６４は、第１ロータコア６３と第２ロータコア６４との間に界磁磁石６５を挟んだ状態で固定筒６２に固定されている。また、第１ロータコア６３と第２ロータコア６４とは、それらの磁極部７２ｂ，８２ｂの先端が互いに反対方向を向くように、且つ周方向に隣り合う第１爪状磁極７２の間に第２爪状磁極８２がそれぞれ配置されるように軸方向に重ねられ固定筒６２に固定されている。そして、固定筒６２に固定された第１及び第２ロータコア６３，６４においては、第１磁極部７２ｂと第２磁極部８２ｂとは、周方向に交互に並ぶとともに、周方向に等間隔（４５°間隔）に位置する。   The first rotor core 63 and the second rotor core 64 are fixed to the fixed cylinder 62 while the fixed cylinder 62 is press-fitted into the through holes 71a and 81a so that the axial interval between the first rotor core 63 and the second rotor core 64 is maintained. Then, the fixed cylinder 62 is externally fixed to the rotating shaft 14, whereby the first rotor core 63 and the second rotor core 64 are fixed to the rotating shaft 14 via the fixed cylinder 62. The first and second rotor cores 63 and 64 are fixed to the fixed cylinder 62 with the field magnet 65 sandwiched between the first rotor core 63 and the second rotor core 64. The first rotor core 63 and the second rotor core 64 have a second claw between the first claw-shaped magnetic poles 72 adjacent to each other in the circumferential direction so that the tips of the magnetic pole portions 72b and 82b face in opposite directions. The magnetic poles 82 are stacked in the axial direction so as to be arranged, and are fixed to the fixed cylinder 62. In the first and second rotor cores 63 and 64 fixed to the fixed cylinder 62, the first magnetic pole portions 72b and the second magnetic pole portions 82b are alternately arranged in the circumferential direction and are equally spaced in the circumferential direction (45 (° interval).

第１及び第２ロータコア６３，６４の組み付け状態において、第１コアベース７１と第２コアベース８１とは互いに平行をなし、それらの間に界磁磁石６５が配置されている。界磁磁石６５は、例えばネオジム磁石よりなる円板状の永久磁石である。界磁磁石６５の径方向の中央部には、固定筒６２が挿通される貫通孔６５ａが形成されている。そして、界磁磁石６５の軸方向の一端面（図８において左側の端面）が第１コアベース７１と、界磁磁石６５の軸方向の他端面（図８において右側の端面）が第２コアベース８１とそれぞれ当接し、界磁磁石６５は第１コアベース７１と第２コアベース８１との間に軸方向に挟持固定されている。なお、界磁磁石６５の外径は、各コアベース７１，８１の外径と一致するように設定されている。   In the assembled state of the first and second rotor cores 63 and 64, the first core base 71 and the second core base 81 are parallel to each other, and the field magnet 65 is disposed therebetween. The field magnet 65 is a disk-shaped permanent magnet made of, for example, a neodymium magnet. A through hole 65 a through which the fixed cylinder 62 is inserted is formed at the radial center of the field magnet 65. One end surface in the axial direction of the field magnet 65 (left end surface in FIG. 8) is the first core base 71, and the other end surface in the axial direction of the field magnet 65 (right end surface in FIG. 8) is the second core. The field magnet 65 is in contact with the base 81, and is fixed between the first core base 71 and the second core base 81 in the axial direction. The outer diameter of the field magnet 65 is set so as to coincide with the outer diameter of each of the core bases 71 and 81.

界磁磁石６５は、第１爪状磁極７２がＮ極、第２爪状磁極８２がＳ極として機能するように軸方向に磁化されている。すなわち、界磁磁石６５は、第１爪状磁極７２と第２爪状磁極８２とを周方向に異なる磁極として機能させるように、第１コアベース７１側がＮ極、第２コアベース８１側がＳ極となるように軸方向に磁化されている。このように、本実施形態のロータ６１は、界磁磁石６５を用いた所謂ランデル型構造のロータである。そして、ロータ６１は、Ｎ極となる４つの第１爪状磁極７２と、Ｓ極となる４つの第２爪状磁極８２とが周方向に交互に配置されており、極数が８極（対極数４個）となっている。   The field magnet 65 is magnetized in the axial direction so that the first claw-shaped magnetic pole 72 functions as an N pole and the second claw-shaped magnetic pole 82 functions as an S pole. That is, in the field magnet 65, the first core base 71 side is N-pole and the second core base 81 side is S so that the first claw-shaped magnetic pole 72 and the second claw-shaped magnetic pole 82 function as different magnetic poles in the circumferential direction. It is magnetized in the axial direction so as to be a pole. As described above, the rotor 61 of the present embodiment is a so-called Landel type rotor using the field magnet 65. In the rotor 61, four first claw-shaped magnetic poles 72 serving as N poles and four second claw-shaped magnetic poles 82 serving as S poles are alternately arranged in the circumferential direction, and the number of poles is eight ( The number of counter electrodes is 4).

第１背面磁石６６は、第１ロータコア６３の各第１爪状磁極７２の背面７２ｄ（すなわち第１爪状磁極７２の径方向内側の面）と、第２コアベース８１の外周面８１ｂ及び界磁磁石６５の外周面６５ｂとの間に配置されている。また、第２背面磁石６７は、第２ロータコア６４の各第２爪状磁極８２の背面８２ｄ（すなわち第２爪状磁極８２の径方向内側の面）と、第１コアベース７１の外周面７１ｂ及び界磁磁石６５の外周面６５ｂとの間に配置されている。従って、ロータ６１においては、周方向に等間隔（９０°間隔）となる４箇所に第１背面磁石６６が配置されるとともに、周方向に隣り合う第１背面磁石６６の間に第２背面磁石６７が配置されている。そして、第１背面磁石６６と第２背面磁石６７とは周方向に交互に４５°間隔に配置されている。   The first back magnet 66 includes a back surface 72d of each first claw-shaped magnetic pole 72 of the first rotor core 63 (that is, a radially inner surface of the first claw-shaped magnetic pole 72), an outer peripheral surface 81b of the second core base 81, and a field. It arrange | positions between the outer peripheral surfaces 65b of the magnet 65. The second back magnet 67 includes a back surface 82 d of each second claw-shaped magnetic pole 82 of the second rotor core 64 (that is, a radially inner surface of the second claw-shaped magnetic pole 82) and an outer peripheral surface 71 b of the first core base 71. And the outer peripheral surface 65 b of the field magnet 65. Accordingly, in the rotor 61, the first back magnets 66 are arranged at four locations that are equally spaced (90 ° intervals) in the circumferential direction, and the second back magnets are disposed between the first back magnets 66 adjacent in the circumferential direction. 67 is arranged. The first back magnet 66 and the second back magnet 67 are alternately arranged at 45 ° intervals in the circumferential direction.

第１背面磁石６６は、軸方向から見た形状が径方向の幅が一定の扇形状をなしている。第１背面磁石６６の径方向の幅は、第１爪状磁極７２の背面７２ｄと第２コアベース８１の外周面８１ｂとの間の間隔と略等しい値となっている。また、第１背面磁石６６の径方向外側の側面は、第１爪状磁極７２の背面７２ｄの曲率と略等しい曲率の円弧状をなしており、第１爪状磁極７２の背面７２ｄに当接している。さらに、第１背面磁石６６の径方向内側の側面は、第２コアベース８１の外周面８１ｂの曲率と略等しい曲率の円弧状をなしており、第２コアベース８１の外周面８１ｂ及び界磁磁石６５の外周面６５ｂに当接している。また、第１背面磁石６６の軸方向の長さは、第２コアベース８１の軸方向の長さと界磁磁石６５の軸方向の長さの和と略等しく形成されている。そして、第１背面磁石６６の軸方向の一端面（図８において左側の端面）は、第１径方向延出部７２ａに当接し、同第１背面磁石６６の軸方向の他端面（図８において右側の端面）は、第１磁極部７２ｂの軸方向の先端面と同一平面内に位置する。また、第１背面磁石６６の周方向の幅は、第１径方向延出部７２ａの周方向の幅と等しく形成されている。そして、第１背面磁石６６の周方向の両端面は、第１極間磁石６８もしくは第２極間磁石６９と接着剤４１にて固定される第１背面磁石側固定面６６ａとなっている。第１背面磁石側固定面６６ａは、径方向に延び且つ軸方向と平行をなす平面状をなしている。第１背面磁石側固定面６６ａは、第１背面磁石６６の周方向の両側で第１爪状磁極７２の周方向の両端の第１コア側固定面７２ｃと同一平面内に位置する。   The first back magnet 66 has a fan shape having a constant radial width when viewed from the axial direction. The radial width of the first back magnet 66 is substantially equal to the distance between the back surface 72 d of the first claw-shaped magnetic pole 72 and the outer peripheral surface 81 b of the second core base 81. Further, the radially outer side surface of the first back magnet 66 has an arc shape with a curvature substantially equal to the curvature of the back surface 72 d of the first claw-shaped magnetic pole 72, and abuts on the back surface 72 d of the first claw-shaped magnetic pole 72. ing. Further, the radially inner side surface of the first back magnet 66 has an arc shape with a curvature substantially equal to the curvature of the outer peripheral surface 81 b of the second core base 81, and the outer peripheral surface 81 b of the second core base 81 and the field magnet The magnet 65 is in contact with the outer peripheral surface 65 b of the magnet 65. The length of the first back magnet 66 in the axial direction is substantially equal to the sum of the length of the second core base 81 in the axial direction and the length of the field magnet 65 in the axial direction. One end surface in the axial direction of the first back magnet 66 (the left end surface in FIG. 8) abuts on the first radially extending portion 72a, and the other end surface in the axial direction of the first back magnet 66 (FIG. 8). The right end face) is located in the same plane as the axial front end face of the first magnetic pole portion 72b. Further, the circumferential width of the first back magnet 66 is formed to be equal to the circumferential width of the first radially extending portion 72a. Then, both end surfaces in the circumferential direction of the first back magnet 66 are first back magnet side fixing surfaces 66 a fixed by the first interpole magnet 68 or the second interpole magnet 69 and the adhesive 41. The first back magnet side fixed surface 66a has a planar shape extending in the radial direction and parallel to the axial direction. The first back magnet side fixing surfaces 66 a are located on the same plane as the first core side fixing surfaces 72 c at both ends in the circumferential direction of the first claw-shaped magnetic pole 72 on both sides in the circumferential direction of the first back magnet 66.

このような第１背面磁石６６は、第１爪状磁極７２の背面７２ｄと対向する側が第１爪状磁極７２と同極のＮ極に、第２コアベース８１の外周面８１ｂに当接する側が第２コアベース８１と同極のＳ極となるように磁化されている。   In such a first back magnet 66, the side facing the back surface 72 d of the first claw-shaped magnetic pole 72 is the north pole of the same polarity as the first claw-shaped magnetic pole 72, and the side abutting on the outer peripheral surface 81 b of the second core base 81 is the side. The second core base 81 is magnetized to have the same polarity as the S pole.

各第２背面磁石６７は、第１背面磁石６６と同一形状をなしている。そして、各第２背面磁石６７の径方向外側の側面は第２爪状磁極８２の背面８２ｄと当接し、第２背面磁石６７の径方向内側の側面は、第１コアベース７１の外周面７１ｂ及び界磁磁石６５の外周面６５ｂに当接している。また、第２背面磁石６７の軸方向の一端面（図８において右側の端面）は、第２径方向延出部８２ａに当接し、同第２背面磁石６７の軸方向の他端面（図８において左側の端面）は、第２磁極部８２ｂの軸方向の先端面と同一平面内に位置する。さらに、第２背面磁石６７の周方向の両端面は、第１極間磁石６８もしくは第２極間磁石６９と接着剤４１にて固定される第２背面磁石側固定面６７ａとなっている。第２背面磁石側固定面６７ａは、第２背面磁石６７の周方向の両側で第２爪状磁極８２の周方向の両端の第２コア側固定面８２ｃと同一平面内に位置する。   Each second back magnet 67 has the same shape as the first back magnet 66. The radially outer side surface of each second back magnet 67 abuts on the back surface 82 d of the second claw-shaped magnetic pole 82, and the radially inner side surface of the second back magnet 67 is the outer peripheral surface 71 b of the first core base 71. And an outer peripheral surface 65b of the field magnet 65. Further, one end surface in the axial direction of the second back magnet 67 (the end surface on the right side in FIG. 8) abuts on the second radially extending portion 82a, and the other end surface in the axial direction of the second back magnet 67 (FIG. 8). (The left end face) is located in the same plane as the axial end face of the second magnetic pole portion 82b. Furthermore, both end surfaces in the circumferential direction of the second back magnet 67 are second back magnet side fixing surfaces 67 a fixed by the first interpole magnet 68 or the second interpole magnet 69 and the adhesive 41. The second back magnet side fixing surface 67 a is located on the same plane as the second core side fixing surfaces 82 c at both ends in the circumferential direction of the second claw-shaped magnetic pole 82 on both sides in the circumferential direction of the second back magnet 67.

そして、第２背面磁石６７は、第２爪状磁極８２の背面８２ｄと対向する側が第２爪状磁極８２と同極のＳ極に、第１コアベース７１の外周面７１ｂと対向する側が第１コアベース７１と同極のＮ極となるように磁化されている。   The second back magnet 67 has the second claw-shaped magnetic pole 82 facing the back surface 82d on the side opposite to the second claw-shaped magnetic pole 82 and the S pole having the same polarity as the second claw-shaped magnetic pole 82. It is magnetized so as to be an N pole having the same polarity as the one core base 71.

第１及び第２極間磁石６８，６９は、周方向に隣り合う第１爪状磁極７２と第２爪状磁極８２との周方向の間に配置されている。
第１極間磁石６８は、周方向に隣り合う第１背面磁石６６と第２背面磁石６７との間であって、第１爪状磁極７２の一方の第１コア側固定面７２ｃ（図９（ａ）において時計方向側の端面）と第２爪状磁極８２の他方の第２コア側固定面８２ｃ（図９（ａ）において反時計方向側の端面）との間に配置されている。第１極間磁石６８は、軸方向と直交する断面の形状が扇形状をなす柱状をなしている。第１極間磁石６８の周方向の幅は、第１爪状磁極７２の一方の第１コア側固定面７２ｃと第２爪状磁極８２の他方の第２コア側固定面８２ｃとの間の周方向の間隔と略等しく形成されている。また、第１極間磁石６８の径方向の幅は、第１爪状磁極７２の径方向の幅と略等しく形成されている。さらに、第１極間磁石６８の軸方向の長さは第１爪状磁極７２の軸方向の長さと等しく形成されている。そして、第１極間磁石６８の径方向外側の側面は、軸方向から見て、第１及び第２爪状磁極７２，８２の径方向外側の側面と共に、ロータ６１の回転軸線を中心とする同一円上に位置する。 The first and second interpole magnets 68 and 69 are arranged between the first claw-shaped magnetic pole 72 and the second claw-shaped magnetic pole 82 adjacent in the circumferential direction.
The first interpole magnet 68 is between the first back magnet 66 and the second back magnet 67 adjacent to each other in the circumferential direction, and is one first core-side fixed surface 72c of the first claw-shaped magnetic pole 72 (FIG. 9). In FIG. 9A, it is disposed between the end face on the clockwise side) and the other second core side fixed face 82c of the second claw-shaped magnetic pole 82 (the end face on the counterclockwise side in FIG. 9A). The first interpole magnet 68 has a columnar shape in which the cross-sectional shape orthogonal to the axial direction forms a fan shape. The circumferential width of the first interpole magnet 68 is between the first core-side fixed surface 72c of the first claw-shaped magnetic pole 72 and the other second core-side fixed surface 82c of the second claw-shaped magnetic pole 82. It is formed approximately equal to the circumferential interval. Further, the radial width of the first interpole magnet 68 is formed to be substantially equal to the radial width of the first claw-shaped magnetic pole 72. Further, the axial length of the first interpole magnet 68 is formed to be equal to the axial length of the first claw-shaped magnetic pole 72. The radially outer side surface of the first interpole magnet 68 is centered on the rotational axis of the rotor 61 together with the radially outer side surfaces of the first and second claw-shaped magnetic poles 72 and 82 when viewed from the axial direction. Located on the same circle.

図９（ｂ）に示すように、第１極間磁石６８の周方向の両端面は、第１背面磁石６６もしくは第２背面磁石６７と接着剤４１にて固定される第１極間磁石側固定面６８ａとなっている。各第１極間磁石側固定面６８ａは、径方向に延び且つ軸方向と平行をなす平面状をなしている。そして、各第１極間磁石側固定面６８ａには第１流入凹部６８ｂが形成されている。各第１流入凹部６８ｂは、各第１極間磁石側固定面６８ａの径方向の中央部に設けられ、軸方向に沿って延びる溝状をなしている。また、第１流入凹部６８ｂは、第１極間磁石側固定面６８ａの軸方向の一端から他端に亘って形成されている。そして、各第１流入凹部６８ｂは、軸方向と直交する断面の形状が、径方向の幅が一定の矩形状をなすとともに、第１流入凹部６８ｂの軸方向の一端から他端まで軸方向と直交する断面の形状が一定となっている。さらに、各第１流入凹部６８ｂは、周方向の片側及び軸方向の両側に開口している。   As shown in FIG. 9B, both end surfaces of the first interpole magnet 68 in the circumferential direction are on the first interpole magnet side fixed by the first back magnet 66 or the second back magnet 67 and the adhesive 41. It is a fixed surface 68a. Each first interpole magnet side fixing surface 68a has a planar shape extending in the radial direction and parallel to the axial direction. And the 1st inflow recessed part 68b is formed in each 1st pole magnet side fixed surface 68a. Each of the first inflow recesses 68b is provided in the central portion in the radial direction of each of the first inter-pole magnet side fixing surfaces 68a, and has a groove shape extending along the axial direction. The first inflow recess 68b is formed from one end to the other end in the axial direction of the first inter-pole magnet side fixing surface 68a. Each of the first inflow recesses 68b has a rectangular cross-section orthogonal to the axial direction, and has a rectangular shape with a constant radial width. The first inflow recess 68b is axially extended from one end to the other end in the axial direction. The shape of the orthogonal cross section is constant. Further, each first inflow recess 68b opens on one side in the circumferential direction and on both sides in the axial direction.

図８及び図９（ａ）に示すように、第２極間磁石６９は、第１極間磁石６８と同一形状をなしている。第２極間磁石６９は、周方向に隣り合う第１背面磁石６６と第２背面磁石６７との間であって、第１爪状磁極７２の他方の第１コア側固定面７２ｃ（図９（ａ）において反時計方向側の端面）と第２爪状磁極８２の一方の第２コア側固定面８２ｃ（図９（ａ）において時計方向側の端面）との間に配置されている。また、第２極間磁石６９の周方向の両端面は、第１背面磁石６６もしくは第２背面磁石６７と接着剤４１にて固定される第２極間磁石側固定面６９ａとなっている。さらに、各第２極間磁石側固定面６９ａには、第１流入凹部６８ｂと同一形状をなす第２流入凹部６９ｂが形成されている。   As shown in FIGS. 8 and 9A, the second interpole magnet 69 has the same shape as the first interpole magnet 68. The second inter-pole magnet 69 is between the first back magnet 66 and the second back magnet 67 adjacent to each other in the circumferential direction, and is the other first core-side fixed surface 72c of the first claw-shaped magnetic pole 72 (FIG. 9). (A) a counterclockwise end face) and one second core-side fixing face 82c of the second claw-shaped magnetic pole 82 (clockwise end face in FIG. 9A). Further, both end surfaces in the circumferential direction of the second interpole magnet 69 are second interpole magnet side fixing surfaces 69 a fixed by the first back magnet 66 or the second back magnet 67 and the adhesive 41. Furthermore, a second inflow recess 69b having the same shape as the first inflow recess 68b is formed in each second interpole magnet side fixing surface 69a.

第１及び第２極間磁石６８，６９は、第１及び第２爪状磁極７２，８２のそれぞれと同極性の面が対向するように周方向に磁化されている。すなわち、第１及び第２極間磁石６８，６９は、第１爪状磁極７２側がＮ極、第２爪状磁極８２側がＳ極となるように周方向に磁化されている。   The first and second interpole magnets 68 and 69 are magnetized in the circumferential direction so that the surfaces of the same polarity as the first and second claw-shaped magnetic poles 72 and 82 face each other. That is, the first and second interpole magnets 68 and 69 are magnetized in the circumferential direction so that the first claw-shaped magnetic pole 72 side is the N pole and the second claw-shaped magnetic pole 82 side is the S pole.

次に、本第２実施形態の作用について説明する。
図９（ａ）及び図９（ｂ）に示すように、４個の第１背面磁石６６、４個の第２背面磁石６７、４個の第１極間磁石６８及び４個の第２極間磁石６９は、界磁磁石６５の外周を囲むように且つ全体で環状をなすように同界磁磁石６５の外周に配置されている。そして、４個の第１背面磁石６６、４個の第２背面磁石６７、４個の第１極間磁石６８及び４個の第２極間磁石６９のうち、周方向に隣り合う磁石同士が接着剤４１にて互いに固定されている。 Next, the operation of the second embodiment will be described.
As shown in FIGS. 9A and 9B, the four first back magnets 66, the four second back magnets 67, the four first interpole magnets 68, and the four second poles. The intermediate magnet 69 is arranged on the outer periphery of the field magnet 65 so as to surround the outer periphery of the field magnet 65 and to form a ring shape as a whole. Of the four first back magnets 66, the four second back magnets 67, the four first interpole magnets 68, and the four second interpole magnets 69, the magnets adjacent in the circumferential direction are adjacent to each other. They are fixed to each other with an adhesive 41.

詳述すると、第１極間磁石６８の周方向の他方側（図９において反時計方向側）の第１極間磁石側固定面６８ａと、第１背面磁石６６の周方向の一方側（図９において時計方向側）の第１背面磁石側固定面６６ａ及び第１爪状磁極７２の周方向の一方側（図９において時計方向側）の第１コア側固定面７２ｃとが接着剤４１にて固定されている。第１背面磁石６６と該第１背面磁石６６と周方向に隣り合う第１背面磁石６６及び第１爪状磁極７２とを接着固定する際には、第１極間磁石側固定面６８ａに接着剤４１を塗布する。なお、接着剤４１は、第１コア側固定面７２ｃ及び第１背面磁石側固定面６６ａに塗布してもよいし、第１極間磁石側固定面６８ａ、第１コア側固定面７２ｃ及び第１背面磁石側固定面６６ａの全てに塗布してもよい。その後、第１極間磁石側固定面６８ａと、該第１極間磁石側固定面６８ａと周方向に対向される第１背面磁石側固定面６６ａ及び第１コア側固定面７２ｃとを重ね合わせる。この時、第１極間磁石側固定面６８ａには第１流入凹部６８ｂが設けられているため、第１背面磁石側固定面６６ａ及び第１コア側固定面７２ｃと第１極間磁石側固定面６８ａとの間の接着剤４１は、第１流入凹部６８ｂ内に流入可能である。そして、接着剤４１が硬化することにより、周方向に対向する第１極間磁石側固定面６８ａと第１コア側固定面７２ｃ及び第１背面磁石側固定面６６ａとが接着剤４１にて固定される。すなわち、周方向に並ぶ第１極間磁石６８と第１背面磁石６６及び第１爪状磁極７２とが接着剤４１にて固定される。   More specifically, the first interpole magnet side fixing surface 68a on the other side in the circumferential direction of the first interpole magnet 68 (counterclockwise side in FIG. 9) and the one side in the circumferential direction of the first back magnet 66 (see FIG. 9, the first back magnet side fixing surface 66 a (clockwise in FIG. 9) and the first core side fixing surface 72 c on the circumferential side of the first claw-shaped magnetic pole 72 (clockwise in FIG. 9) serve as the adhesive 41. Is fixed. When the first back magnet 66 and the first back magnet 66 and the first claw-shaped magnetic pole 72 adjacent to the first back magnet 66 in the circumferential direction are bonded and fixed, the first back magnet 66 is bonded to the first interpole magnet side fixed surface 68a. Agent 41 is applied. The adhesive 41 may be applied to the first core-side fixing surface 72c and the first back magnet-side fixing surface 66a, or the first interpolar magnet-side fixing surface 68a, the first core-side fixing surface 72c, and the first core-side fixing surface 72c. You may apply | coat to all the 1 back magnet side fixed surfaces 66a. Thereafter, the first interpole magnet side fixing surface 68a is superposed on the first back magnet side fixing surface 66a and the first core side fixing surface 72c which are opposed to the first interpole magnet side fixing surface 68a in the circumferential direction. . At this time, the first interpole magnet side fixing surface 68a is provided with the first inflow recess 68b. Therefore, the first back magnet side fixing surface 66a and the first core side fixing surface 72c and the first interpole magnet side fixing are provided. The adhesive 41 between the surface 68a can flow into the first inflow recess 68b. When the adhesive 41 is cured, the first inter-pole magnet side fixing surface 68a, the first core side fixing surface 72c, and the first back magnet side fixing surface 66a that are opposed in the circumferential direction are fixed by the adhesive 41. Is done. That is, the first interpole magnet 68, the first back magnet 66, and the first claw-shaped magnetic pole 72 arranged in the circumferential direction are fixed by the adhesive 41.

同様にして、第１極間磁石６８の周方向の一方側（図９において時計方向側）の第１極間磁石側固定面６８ａと、第２背面磁石６７の周方向の他方側（図９において反時計方向側）の第２背面磁石側固定面６７ａ及び第２爪状磁極８２の周方向の他方側（図９において反時計方向側）の第２コア側固定面８２ｃとが接着剤４１にて固定されている。   Similarly, the first interpole magnet side fixing surface 68a on the one side in the circumferential direction of the first interpole magnet 68 (clockwise side in FIG. 9) and the other side in the circumferential direction of the second back magnet 67 (FIG. 9). The second back magnet side fixing surface 67a (counterclockwise in FIG. 9) and the second core side fixing surface 82c on the other circumferential side (counterclockwise side in FIG. 9) of the second claw-shaped magnetic pole 82 are the adhesive 41. It is fixed at.

また同様にして、第２極間磁石６９の周方向の一方側（図９において時計方向側）の第２極間磁石側固定面６９ａと、第１背面磁石６６の周方向の他方側（図９において反時計方向側）の第１背面磁石側固定面６６ａ及び第１爪状磁極７２の周方向の他方側（図９において反時計方向側）の第１コア側固定面７２ｃとが接着剤４１にて固定されている。   Similarly, the second interpole magnet side fixing surface 69a on the one side in the circumferential direction of the second interpole magnet 69 (clockwise side in FIG. 9) and the other side in the circumferential direction of the first back magnet 66 (see FIG. 9 and the first core-side fixing surface 72c on the other side in the circumferential direction of the first claw-shaped magnetic pole 72 (counterclockwise side in FIG. 9). It is fixed at 41.

また同様にして、第２極間磁石６９の周方向の他方側（図９において反時計方向側）の第２極間磁石側固定面６９ａと、第２背面磁石６７の周方向の一方側（図９において時計方向側）の第２背面磁石側固定面６７ａ及び第２爪状磁極８２の周方向の一方側（図９において時計方向側）の第１コア側固定面７２ｃとが接着剤４１にて固定されている。   Similarly, the second interpole magnet side fixing surface 69a on the other circumferential side of the second interpole magnet 69 (counterclockwise side in FIG. 9) and one circumferential side of the second back magnet 67 ( The second back magnet side fixing surface 67a on the clockwise side in FIG. 9 and the first core side fixing surface 72c on the one side in the circumferential direction of the second claw-shaped magnetic pole 82 (clockwise side in FIG. 9) are the adhesive 41. It is fixed at.

本第２実施形態によれば、上記第１実施形態の（２）と同様の効果に加えて、以下の特徴的な効果を得ることができる。
（１）４個の第１背面磁石６６、４個の第２背面磁石６７、４個の第１極間磁石６８及び４個の第２極間磁石６９のうち周方向に隣り合う磁石同士を接着剤４１により固定する。そして、第１極間磁石側固定面６８ａには第１流入凹部６８ｂが形成されているため、互いに固定される第１極間磁石側固定面６８ａと第１背面磁石側固定面６６ａ及び第１コア側固定面７２ｃとを重ね合わせたときに、その間に介在された接着剤４１が第１流入凹部６８ｂに流入可能である。また、互いに固定される第１極間磁石側固定面６８ａと第２背面磁石側固定面６７ａ及び第２コア側固定面８２ｃとを重ね合わせたときに、その間に介在された接着剤４１が第１流入凹部６８ｂに流入可能である。同様に、第２極間磁石側固定面６９ａには第２流入凹部６９ｂが形成されているため、互いに固定される第２極間磁石側固定面６９ａと第１背面磁石側固定面６６ａ及び第１コア側固定面７２ｃとを重ね合わせたときに、その間に介在された接着剤４１が第２流入凹部６９ｂに流入可能である。また、互いに固定される第２極間磁石側固定面６９ａと第２背面磁石側固定面６７ａ及び第２コア側固定面８２ｃとを重ね合わせたときに、その間に介在された接着剤４１が第２流入凹部６９ｂに流入可能である。従って、互いに固定される第１極間磁石側固定面６８ａと第１背面磁石側固定面６６ａ及び第１コア側固定面７２ｃとの間、互いに固定される第１極間磁石側固定面６８ａと第２背面磁石側固定面６７ａ及び第２コア側固定面８２ｃとの間から接着剤４１が外部に漏れ出ることが抑制される。同様に、互いに固定される第２極間磁石側固定面６９ａと第１背面磁石側固定面６６ａ及び第１コア側固定面７２ｃとの間、互いに固定される第２極間磁石側固定面６９ａと第２背面磁石側固定面６７ａ及び第２コア側固定面８２ｃとの間から接着剤４１が外部に漏れ出ることが抑制される。そのため、第１極間磁石側固定面６８ａに塗布された接着剤４１は、周方向に対向する第１極間磁石側固定面６８ａもしくは第２極間磁石側固定面６９ａとの間、並びに、周方向に対向する第１コア側固定面７２ｃ若しくは第２コア側固定面８２ｃとの間に留まり易くなる。また、第２極間磁石側固定面６９ａに塗布された接着剤４１は、周方向に対向する第１極間磁石側固定面６８ａもしくは第２極間磁石側固定面６９ａとの間、並びに、周方向に対向する第１コア側固定面７２ｃ若しくは第２コア側固定面８２ｃとの間に留まり易くなる。よって、接着剤４１にて第１及び第２背面磁石６６，６７並びに第１及び第２極間磁石６８，６９を良好に固定することができる。 According to the second embodiment, in addition to the same effect as (2) of the first embodiment, the following characteristic effects can be obtained.
(1) Among the four first back magnets 66, the four second back magnets 67, the four first interpole magnets 68, and the four second interpole magnets 69, magnets adjacent in the circumferential direction Fix with adhesive 41. And since the 1st inflow recessed part 68b is formed in the 1st interpole magnet side fixed surface 68a, the 1st interpole magnet side fixed surface 68a and the 1st back magnet side fixed surface 66a which are mutually fixed, and the 1st When the core-side fixing surface 72c is overlapped, the adhesive 41 interposed therebetween can flow into the first inflow recess 68b. Further, when the first interpole magnet side fixing surface 68a, the second back magnet side fixing surface 67a, and the second core side fixing surface 82c, which are fixed to each other, are overlapped, the adhesive 41 interposed therebetween is 1 can flow into the inflow recess 68b. Similarly, since the second inflow recess 69b is formed in the second interpole magnet side fixing surface 69a, the second interpole magnet side fixing surface 69a, the first back magnet side fixing surface 66a and the second back magnet side fixing surface 69a are fixed to each other. When the first core-side fixing surface 72c is overlapped, the adhesive 41 interposed therebetween can flow into the second inflow recess 69b. Further, when the second interpole magnet side fixing surface 69a, the second back magnet side fixing surface 67a, and the second core side fixing surface 82c, which are fixed to each other, are overlapped, the adhesive 41 interposed therebetween is 2 Can flow into the inflow recess 69b. Therefore, between the first interpole magnet side fixing surface 68a fixed to each other and the first back magnet side fixing surface 66a and the first core side fixing surface 72c, the first interpole magnet side fixing surface 68a fixed to each other. It is suppressed that the adhesive 41 leaks to the outside from between the second back magnet side fixing surface 67a and the second core side fixing surface 82c. Similarly, the second interpole magnet side fixing surface 69a fixed to each other between the second interpole magnet side fixing surface 69a and the first back magnet side fixing surface 66a and the first core side fixing surface 72c fixed to each other. And the second back magnet side fixing surface 67a and the second core side fixing surface 82c are prevented from leaking to the outside. Therefore, the adhesive 41 applied to the first interpole magnet side fixing surface 68a is between the first interpole magnet side fixing surface 68a or the second interpole magnet side fixing surface 69a facing in the circumferential direction, and It becomes easy to stay between the 1st core side fixing surface 72c or the 2nd core side fixing surface 82c which opposes the circumferential direction. Also, the adhesive 41 applied to the second interpole magnet side fixing surface 69a is between the first interpole magnet side fixing surface 68a or the second interpole magnet side fixing surface 69a facing in the circumferential direction, and It becomes easy to stay between the 1st core side fixing surface 72c or the 2nd core side fixing surface 82c which opposes the circumferential direction. Therefore, the first and second back magnets 66 and 67 and the first and second interpole magnets 68 and 69 can be satisfactorily fixed by the adhesive 41.

（２）第１背面磁石６６、第２背面磁石６７、第１極間磁石６８及び第２極間磁石６９のうち、周方向に隣り合う磁石同士を接着剤４１によって容易に固定することができる。また、第１及び第２極間磁石６８，６９と第１及び第２ロータコア６３，６４とを接着剤４１によって容易に固定することができる。   (2) Among the first back magnet 66, the second back magnet 67, the first interpole magnet 68, and the second interpole magnet 69, the magnets adjacent in the circumferential direction can be easily fixed by the adhesive 41. . Further, the first and second interpole magnets 68 and 69 and the first and second rotor cores 63 and 64 can be easily fixed by the adhesive 41.

なお、上記各実施形態は、以下のように変更してもよい。
・上記第１実施形態では、第１流入凹部２２ｄは、第１コア側固定面２２ｃの軸方向の一端から他端まで軸方向に沿って延びる溝状をなしている。しかしながら、第１流入凹部２２ｄの形状はこれに限らない。例えば、第１流入凹部２２ｄは、第１コア側固定面２２ｃの軸方向の長さよりも短い長さであってもよい。また、第１流入凹部２２ｄは、第１コア側固定面２２ｃに周方向に延びる溝状に形成されてもよい。また、第１流入凹部２２ｄは溝状に限らず、半球状、直方体状、三角錐状、円錐状等の凹状をなすものであってもよい。さらに、第１流入凹部２２ｄは、第１コア側固定面２２ｃに複数形成されてもよい。このことは、第２コア側固定面２４ｃに設けられた第２流入凹部２４ｄについても同様である。 In addition, you may change each said embodiment as follows.
In the first embodiment, the first inflow recess 22d has a groove shape extending in the axial direction from one end to the other end in the axial direction of the first core-side fixing surface 22c. However, the shape of the first inflow recess 22d is not limited to this. For example, the first inflow recess 22d may be shorter than the axial length of the first core-side fixing surface 22c. Further, the first inflow recess 22d may be formed in a groove shape extending in the circumferential direction on the first core-side fixing surface 22c. The first inflow recess 22d is not limited to a groove shape, and may be a concave shape such as a hemisphere, a rectangular parallelepiped, a triangular pyramid, or a cone. Furthermore, a plurality of first inflow recesses 22d may be formed on the first core-side fixing surface 22c. The same applies to the second inflow recess 24d provided on the second core-side fixing surface 24c.

また、上記第２実施形態の第１流入凹部６８ｂ及び第２流入凹部６９ｂについても上記第２実施形態の形状に限らず、例えば、第１極間磁石側固定面６８ａ及び第２極間磁石側固定面６９ａの軸方向の長さよりも短い溝状や、径方向に延びる溝状をなすものであってもよい。また、第１流入凹部６８ｂ及び第２流入凹部６９ｂは、半球状、直方体状、三角錐状、円錐状等の凹状をなすものであってもよい。さらに、第１流入凹部６８ｂは第１極間磁石側固定面６８ａに、第２流入凹部６９ｂは第２極間磁石側固定面６９ａにそれぞれ複数個ずつ形成されてもよい。   The first inflow recess 68b and the second inflow recess 69b of the second embodiment are not limited to the shape of the second embodiment. For example, the first interpole magnet side fixing surface 68a and the second interpole magnet side A groove shape shorter than the axial length of the fixed surface 69a or a groove shape extending in the radial direction may be used. Further, the first inflow recess 68b and the second inflow recess 69b may have a concave shape such as a hemispherical shape, a rectangular parallelepiped shape, a triangular pyramid shape, or a conical shape. Further, a plurality of first inflow recesses 68b may be formed on the first interpole magnet side fixing surface 68a, and a plurality of second inflow recesses 69b may be formed on the second interpole magnet side fixing surface 69a.

・図１０に示すように、上記第１実施形態の第１流入凹部２２ｄに代えて第１流入凹部１０１を第１コア側固定面２２ｃに設けてもよい。第１流入凹部１０１は、軸方向に沿って延びる溝状をなすとともに、第１磁石側固定面３１ａ側（図１０では径方向内側）に開口している。そして、第１流入凹部１０１の内周面は、その周方向の両端部に、第１コア側固定面２２ｃから連続して形成され第１コア側固定面２２ｃに対して傾斜した傾斜面１０１ａを有する。傾斜面１０１ａと第１コア側固定面２２ｃとは、第１コア側固定面２２ｃが固定される第１磁石側固定面３１ａ側で鈍角を形成している。このようにすると、第１流入凹部１０１の内周面に傾斜面１０１ａが設けられたことにより、互いに固定される第１コア側固定面２２ｃと第１磁石側固定面３１ａとの間の接着剤４１が第１流入凹部１０１内により流入し易くなる。従って、互いに固定される第１コア側固定面２２ｃと第１磁石側固定面３１ａとの間から接着剤４１が外部に漏れ出ることがより抑制され、第１コア側固定面２２ｃもしくは第１磁石側固定面３１ａに塗布された接着剤４１は互いに固定される第１コア側固定面２２ｃと第１磁石側固定面３１ａとの間により留まり易くなる。よって、接着剤４１にて整流磁石１８をより良好に固定することができる。   As shown in FIG. 10, instead of the first inflow recess 22d of the first embodiment, a first inflow recess 101 may be provided on the first core-side fixing surface 22c. The first inflow recess 101 has a groove shape extending along the axial direction, and is open to the first magnet side fixing surface 31a side (in the radial direction in FIG. 10). And the inner peripheral surface of the 1st inflow recessed part 101 is continuously formed in the both ends of the circumferential direction from the 1st core side fixing surface 22c, and the inclined surface 101a inclined with respect to the 1st core side fixing surface 22c. Have. The inclined surface 101a and the first core-side fixing surface 22c form an obtuse angle on the first magnet-side fixing surface 31a side to which the first core-side fixing surface 22c is fixed. If it does in this way, the adhesive agent between the 1st core side fixing surface 22c and the 1st magnet side fixing surface 31a mutually fixed by providing the inclined surface 101a in the internal peripheral surface of the 1st inflow recessed part 101. 41 becomes easier to flow into the first inflow recess 101. Accordingly, the adhesive 41 is further prevented from leaking outside between the first core-side fixing surface 22c and the first magnet-side fixing surface 31a that are fixed to each other, and the first core-side fixing surface 22c or the first magnet is prevented. The adhesive 41 applied to the side fixing surface 31a is more likely to stay between the first core side fixing surface 22c and the first magnet side fixing surface 31a that are fixed to each other. Therefore, the rectifier magnet 18 can be fixed better with the adhesive 41.

なお、第１流入凹部１０１を、一対の傾斜面１０１ａのみで構成し、軸方向と直交する断面の形状が第１磁石側固定面３１ａ側に開口するＶ字状をなすように構成しても、同様の効果を得ることができる。また、第１流入凹部１０１の内周面は、周方向の片側の端部にのみ傾斜面１０１ａを有するように形成されてもよい。また、第２コア側固定面２４ｃに設けられる第２流入凹部２４ｄも、上記第１流入凹部１０１と同様の形状としてもよい。また、第２実施形態の第１流入凹部６８ｂの内周面を、第１極間磁石側固定面６８ａから連続して形成され第１極間磁石側固定面６８ａに対して傾斜した傾斜面を有する構成としてもよい。同様に、第２実施形態の第２流入凹部６９ｂの内周面を、第２極間磁石側固定面６９ａから連続して形成され第２極間磁石側固定面６９ａに対して傾斜した傾斜面を有する構成としてもよい。   The first inflow recess 101 may be configured by only a pair of inclined surfaces 101a, and the cross-sectional shape orthogonal to the axial direction may be V-shaped to open to the first magnet side fixed surface 31a side. The same effect can be obtained. Further, the inner peripheral surface of the first inflow recess 101 may be formed so as to have the inclined surface 101a only at one end portion in the circumferential direction. Also, the second inflow recess 24d provided in the second core-side fixing surface 24c may have the same shape as the first inflow recess 101. In addition, the inner peripheral surface of the first inflow recess 68b of the second embodiment is formed with an inclined surface formed continuously from the first interpole magnet side fixing surface 68a and inclined with respect to the first interpole magnet side fixing surface 68a. It is good also as a structure to have. Similarly, the inner peripheral surface of the second inflow recess 69b of the second embodiment is formed continuously from the second interpole magnet side fixing surface 69a and is inclined with respect to the second interpole magnet side fixing surface 69a. It is good also as a structure which has.

・図１１に示すように、上記第１実施形態の第１流入凹部２２ｄに代えて第１流入凹部１０２を第１コア側固定面２２ｃに設けてもよい。第１流入凹部１０２は、軸方向に沿って延びる溝状をなすとともに、第１磁石側固定面３１ａ側（図１１では径方向内側）に開口している。そして、第１流入凹部１０２の内周面は、第１コア側固定面２２ｃから連続して形成され円弧状に湾曲した円弧面１０２ａとなっている。なお、円弧面１０２ａと第１コア側固定面２２ｃとは、第１コア側固定面２２ｃが固定される第１磁石側固定面３１ａ側で鈍角を形成している。このようにすると、第１流入凹部１０２の内周面に円弧面１０２ａが設けられたことにより、互いに固定される第１コア側固定面２２ｃと第１磁石側固定面３１ａとの間の接着剤４１が第１流入凹部１０２内により流入し易くなる。従って、互いに固定される第１コア側固定面２２ｃと第１磁石側固定面３１ａとの間から接着剤４１が外部に漏れ出ることがより抑制され、第１コア側固定面２２ｃもしくは第１磁石側固定面３１ａに塗布された接着剤４１は互いに固定される第１コア側固定面２２ｃと第１磁石側固定面３１ａとの間により留まり易くなる。よって、接着剤４１にて整流磁石１８をより良好に固定することができる。   As shown in FIG. 11, instead of the first inflow recess 22d of the first embodiment, a first inflow recess 102 may be provided on the first core-side fixing surface 22c. The first inflow recess 102 has a groove shape extending along the axial direction, and is open to the first magnet side fixing surface 31a side (in the radial direction in FIG. 11). The inner peripheral surface of the first inflow recess 102 is an arc surface 102a that is formed continuously from the first core-side fixing surface 22c and is curved in an arc shape. Note that the arc surface 102a and the first core-side fixing surface 22c form an obtuse angle on the first magnet-side fixing surface 31a side to which the first core-side fixing surface 22c is fixed. In this case, the adhesive between the first core-side fixing surface 22c and the first magnet-side fixing surface 31a fixed to each other by providing the arc surface 102a on the inner peripheral surface of the first inflow recess 102. 41 becomes easier to flow into the first inflow recess 102. Accordingly, the adhesive 41 is further prevented from leaking outside between the first core-side fixing surface 22c and the first magnet-side fixing surface 31a that are fixed to each other, and the first core-side fixing surface 22c or the first magnet is prevented. The adhesive 41 applied to the side fixing surface 31a is more likely to stay between the first core side fixing surface 22c and the first magnet side fixing surface 31a that are fixed to each other. Therefore, the rectifier magnet 18 can be fixed better with the adhesive 41.

なお、第１流入凹部１０２の内周面は、周方向の少なくとも一方の端部に、第１コア側固定面２２ｃから連続して形成され円弧状に湾曲した円弧面を有するものであってもよい。この場合、円弧面と第１コア側固定面２２ｃとは、第１コア側固定面２２ｃが固定される第１磁石側固定面３１ａ側で鈍角を形成することが好ましい。また、第２コア側固定面２４ｃに設けられる第２流入凹部２４ｄも、上記第１流入凹部１０２と同様の形状としてもよい。また、第２実施形態の第１流入凹部６８ｂの内周面を、第１極間磁石側固定面６８ａから連続して形成され円弧状に湾曲した円弧面を有する構成としてもよい。同様に、第２実施形態の第２流入凹部６９ｂの内周面を、第２極間磁石側固定面６９ａから連続して形成され円弧状に湾曲した円弧面を有する構成としてもよい。   Note that the inner peripheral surface of the first inflow recess 102 may have an arc surface that is continuously formed from the first core-side fixing surface 22c and curved in an arc shape at at least one end in the circumferential direction. Good. In this case, it is preferable that the arc surface and the first core-side fixing surface 22c form an obtuse angle on the first magnet-side fixing surface 31a side on which the first core-side fixing surface 22c is fixed. Also, the second inflow recess 24d provided in the second core-side fixing surface 24c may have the same shape as the first inflow recess 102. Moreover, it is good also as a structure which has the circular arc surface which was formed continuously from the 1st interpole magnet side fixing surface 68a, and was curved in the circular arc shape in the 1st inflow recessed part 68b of 2nd Embodiment. Similarly, the inner peripheral surface of the second inflow recess 69b of the second embodiment may have a circular arc surface formed continuously from the second interpole magnet side fixing surface 69a and curved in an arc shape.

・上記第１実施形態では、第１ロータコア１５に第１流入凹部２２ｄが設けられるとともに、第２ロータコア１６に第２流入凹部２４ｄが設けられている。しかしながら、整流磁石１８に流入凹部を設けてもよい。例えば、図１２に示すように、第１磁石側固定面３１ａに、上記第１実施形態の第１流入凹部２２ｄと同様の形状をなし第１コア側固定面２２ｃ側に開口する流入凹部１０３を設けてもよい。   In the first embodiment, the first rotor core 15 is provided with the first inflow recess 22d, and the second rotor core 16 is provided with the second inflow recess 24d. However, an inflow recess may be provided in the rectifying magnet 18. For example, as shown in FIG. 12, the first magnet-side fixing surface 31a has an inflow recess 103 that has the same shape as the first inflow recess 22d of the first embodiment and opens to the first core-side fixing surface 22c. It may be provided.

・上記第２実施形態において、第１コア側固定面７２ｃ及び第２コア側固定面８２ｃに流入凹部を設けてもよい。また、第１背面磁石側固定面６６ａ及び第２背面磁石側固定面６７ａに流入凹部を設けてもよい。   In the second embodiment, an inflow recess may be provided in the first core side fixing surface 72c and the second core side fixing surface 82c. Moreover, you may provide an inflow recessed part in the 1st back magnet side fixing surface 66a and the 2nd back magnet side fixing surface 67a.

・第２実施形態のロータ６１において、第１爪状磁極７２の背面７２ｄと第１背面磁石６６とを接着剤４１にて固定してもよい。この場合、背面７２ｄと第１背面磁石６６の径方向外側の側面とが互いに接着剤４１にて固定される固定面となる。そして、背面７２ｄ及び第１背面磁石６６の径方向外側の側面のうちの少なくとも一方に流入凹部が設けられる。同様に、第２爪状磁極８２の背面８２ｄと第２背面磁石６７とを接着剤４１にて固定してもよい。この場合、背面８２ｄと第２背面磁石６７の径方向外側の側面とが互いに接着剤４１にて固定される固定面となる。そして、背面８２ｄ及び第２背面磁石６７の径方向外側の側面のうちの少なくとも一方に流入凹部が設けられる。   In the rotor 61 of the second embodiment, the back surface 72 d of the first claw-shaped magnetic pole 72 and the first back magnet 66 may be fixed with the adhesive 41. In this case, the back surface 72d and the radially outer side surface of the first back magnet 66 are fixed surfaces that are fixed to each other by the adhesive 41. An inflow recess is provided on at least one of the radially outer side surfaces of the back surface 72d and the first back magnet 66. Similarly, the back surface 82 d of the second claw-shaped magnetic pole 82 and the second back magnet 67 may be fixed by the adhesive 41. In this case, the back surface 82d and the radially outer side surface of the second back magnet 67 are fixed surfaces that are fixed to each other by the adhesive 41. An inflow recess is provided in at least one of the radially outer side surfaces of the back surface 82 d and the second back magnet 67.

・第１及び第２ロータコア１５，１６と整流磁石１８とを接着剤４１にて固定する場所は、上記第１実施形態の場所に限らない。例えば、図１３に示す例では、第２爪状磁極２４の周方向の一端面（図１３において反時計方向側の端面）が、第１極間磁石部３３と固定されるコア側固定面１１１ａとなっている。また、第１極間磁石部３３における周方向の他端面（図１３において時計方向の端面）は、コア側固定面１１１ａと固定される磁石側固定面１１２ａとなっている。さらに、コア側固定面１１１ａには、磁石側固定面１１２ａ側に開口する流入凹部１１３ａが設けられている。そして、コア側固定面１１１ａと磁石側固定面１１２ａとは接着剤４１にて固定されている。また、第２爪状磁極２４の周方向の他端面（図１３において時計方向側の端面）が、第２極間磁石部３４と固定されるコア側固定面１１１ｂとなっている。また、第２極間磁石部３４における周方向の一端面（図１３において反時計方向の端面）は、コア側固定面１１１ｂと固定される磁石側固定面１１２ｂとなっている。さらに、コア側固定面１１１ｂには、磁石側固定面１１２ｂ側に開口する流入凹部１１３ｂが設けられている。そして、コア側固定面１１１ｂと磁石側固定面１１２ｂとは接着剤４１にて固定されている。   -The place which fixes the 1st and 2nd rotor cores 15 and 16 and the rectifier magnet 18 with the adhesive agent 41 is not restricted to the place of the said 1st Embodiment. For example, in the example shown in FIG. 13, one end face in the circumferential direction of the second claw-shaped magnetic pole 24 (the end face on the counterclockwise side in FIG. 13) is fixed to the first interpole magnet portion 33. It has become. Further, the other end surface in the circumferential direction (the end surface in the clockwise direction in FIG. 13) of the first interpole magnet portion 33 is a magnet-side fixing surface 112a fixed to the core-side fixing surface 111a. Furthermore, the core-side fixing surface 111a is provided with an inflow recess 113a that opens toward the magnet-side fixing surface 112a. The core-side fixing surface 111a and the magnet-side fixing surface 112a are fixed with an adhesive 41. Further, the other end surface in the circumferential direction of the second claw-shaped magnetic pole 24 (the end surface on the clockwise side in FIG. 13) is a core-side fixing surface 111b that is fixed to the second interpole magnet portion 34. Further, one end surface in the circumferential direction (second end surface in the counterclockwise direction in FIG. 13) of the second interpole magnet portion 34 is a magnet side fixing surface 112b fixed to the core side fixing surface 111b. Furthermore, the inflow recessed part 113b opened to the magnet side fixing surface 112b side is provided in the core side fixing surface 111b. The core side fixing surface 111b and the magnet side fixing surface 112b are fixed by an adhesive 41.

・上記第２実施形態では、第１及び第２ロータコア６３，６４と第１及び第２極間磁石６８，６９とが接着剤４１にて固定されている。しかしながら、第１及び第２ロータコア６３，６４と第１及び第２極間磁石６８，６９とは必ずしも固定されなくてもよい。この場合、第１及び第２背面磁石６６，６７並びに第１及び第２極間磁石６８，６９のうち周方向に隣り合う磁石同士を接着剤４１にて固定する。第１極間磁石側固定面６８ａには第１流入凹部６８ｂが形成されているため、互いに固定される第１極間磁石側固定面６８ａと第１背面磁石側固定面６６ａとを重ね合わせたときに、その間に介在された接着剤４１が第１流入凹部６８ｂに流入可能である。また、互いに固定される第１極間磁石側固定面６８ａと第２背面磁石側固定面６７ａとを重ね合わせたときに、その間に介在された接着剤４１が第１流入凹部６８ｂに流入可能である。同様に、第２極間磁石側固定面６９ａには第２流入凹部６９ｂが形成されているため、互いに固定される第２極間磁石側固定面６９ａと第１背面磁石側固定面６６ａとを重ね合わせたときに、その間に介在された接着剤４１が第２流入凹部６９ｂに流入可能である。また、互いに固定される第２極間磁石側固定面６９ａと第２背面磁石側固定面６７ａとを重ね合わせたときに、その間に介在された接着剤４１が第２流入凹部６９ｂに流入可能である。従って、互いに固定される第１極間磁石側固定面６８ａと第１背面磁石側固定面６６ａとの間、互いに固定される第１極間磁石側固定面６８ａと第２背面磁石側固定面６７ａとの間から接着剤４１が外部に漏れ出ることが抑制される。同様に、互いに固定される第２極間磁石側固定面６９ａと第１背面磁石側固定面６６ａとの間、互いに固定される第２極間磁石側固定面６９ａと第２背面磁石側固定面６７ａとの間から接着剤４１が外部に漏れ出ることが抑制される。そのため、第１背面磁石側固定面６６ａと第１極間磁石側固定面６８ａとの間、第１極間磁石側固定面６８ａと第２背面磁石側固定面６７ａとの間、第２極間磁石側固定面６９ａと第１背面磁石側固定面６６ａとの間、第２極間磁石側固定面６９ａと第２背面磁石側固定面６７ａとの間に接着剤４１が留まり易くなる。よって、接着剤４１にて第１及び第２背面磁石６６，６７並びに第１及び第２極間磁石６８，６９を良好に固定することができる。   In the second embodiment, the first and second rotor cores 63 and 64 and the first and second interpole magnets 68 and 69 are fixed by the adhesive 41. However, the first and second rotor cores 63 and 64 and the first and second interpole magnets 68 and 69 are not necessarily fixed. In this case, the magnets adjacent in the circumferential direction among the first and second back magnets 66 and 67 and the first and second interpole magnets 68 and 69 are fixed by the adhesive 41. Since the first inflow recess 68b is formed in the first interpole magnet side fixing surface 68a, the first interpole magnet side fixing surface 68a and the first back magnet side fixing surface 66a that are fixed to each other are overlapped. Sometimes, the adhesive 41 interposed therebetween can flow into the first inflow recess 68b. Further, when the first inter-pole magnet side fixing surface 68a and the second back magnet side fixing surface 67a fixed to each other are superposed, the adhesive 41 interposed therebetween can flow into the first inflow recess 68b. is there. Similarly, since the second inflow recess 69b is formed in the second interpole magnet side fixing surface 69a, the second interpole magnet side fixing surface 69a and the first back magnet side fixing surface 66a fixed to each other are provided. When superposed, the adhesive 41 interposed therebetween can flow into the second inflow recess 69b. Further, when the second inter-pole magnet side fixing surface 69a and the second back magnet side fixing surface 67a fixed to each other are superposed, the adhesive 41 interposed therebetween can flow into the second inflow recess 69b. is there. Therefore, between the first interpole magnet side fixing surface 68a and the first back magnet side fixing surface 66a fixed to each other, the first interpolar magnet side fixing surface 68a and the second back magnet side fixing surface 67a fixed to each other. The adhesive 41 is prevented from leaking out from between the two. Similarly, between the second interpole magnet side fixing surface 69a and the first back magnet side fixing surface 66a fixed to each other, the second interpolar magnet side fixing surface 69a and the second back magnet side fixing surface fixed to each other. It is suppressed that the adhesive 41 leaks outside from between 67a. Therefore, between the first back magnet side fixing surface 66a and the first interpole magnet side fixing surface 68a, between the first interpole magnet side fixing surface 68a and the second back magnet side fixing surface 67a, between the second poles. The adhesive 41 is likely to stay between the magnet side fixing surface 69a and the first back magnet side fixing surface 66a and between the second interpolar magnet side fixing surface 69a and the second back magnet side fixing surface 67a. Therefore, the first and second back magnets 66 and 67 and the first and second interpole magnets 68 and 69 can be satisfactorily fixed by the adhesive 41.

・上記第１実施形態では、第１ロータコア１５及び第２ロータコア１６の両方が整流磁石１８と接着剤４１にて固定されている。しかしながら、第１ロータコア１５及び第２ロータコア１６の何れか一方のみが整流磁石１８と接着剤４１にて固定されるものであってもよい。   In the first embodiment, both the first rotor core 15 and the second rotor core 16 are fixed by the rectifying magnet 18 and the adhesive 41. However, only one of the first rotor core 15 and the second rotor core 16 may be fixed by the rectifying magnet 18 and the adhesive 41.

・上記第１実施形態では、第１ロータコア１５は５個の第１爪状磁極２２を備え、第２ロータコア１６は５個の第２爪状磁極２４を備えている。しかしながら、第１及び第２ロータコア１５，１６が備える爪状磁極２２，２４の数はこれに限らず、適宜変更してもよい。この場合、爪状磁極２２，２４の数に応じて、整流磁石１８の第１及び第２背面磁石部３１，３２の数並びに第１及び第２極間磁石部３３，３４の数も変更される。   In the first embodiment, the first rotor core 15 includes five first claw-shaped magnetic poles 22, and the second rotor core 16 includes five second claw-shaped magnetic poles 24. However, the number of claw-shaped magnetic poles 22 and 24 provided in the first and second rotor cores 15 and 16 is not limited to this, and may be changed as appropriate. In this case, according to the number of claw-shaped magnetic poles 22 and 24, the number of first and second back magnet parts 31 and 32 of the rectifier magnet 18 and the number of first and second interpole magnet parts 33 and 34 are also changed. The

また、上記第２実施形態についても同様に、第１ロータコア６３の第１爪状磁極７２の数及び第２ロータコア６４の第２爪状磁極８２の数は適宜変更してもよい。この場合、爪状磁極７２，８２の数に応じて、第１及び第２背面磁石６６，６７の数並びに第１及び第２極間磁石６８，６９の数を変更する。なお、ロータ６１は、必ずしも第１及び第２背面磁石６６，６７を備えなくてもよい。   Similarly, in the second embodiment, the number of first claw-shaped magnetic poles 72 of the first rotor core 63 and the number of second claw-shaped magnetic poles 82 of the second rotor core 64 may be appropriately changed. In this case, the number of first and second back magnets 66 and 67 and the number of first and second interpole magnets 68 and 69 are changed according to the number of claw-shaped magnetic poles 72 and 82. The rotor 61 does not necessarily have to include the first and second back magnets 66 and 67.

・上記第１実施形態では、ロータ１１は、第１及び第２ロータコア１５，１６を一対のみ備えている。しかしながら、ロータ１１は、第１及び第２ロータコア１５，１６を複数対備えた構成であってもよい。この場合、対をなす第１及び第２ロータコア１５，１６の第１及び第２コアベース２１，２３の間に界磁磁石１７がそれぞれ配置されるとともに、各界磁磁石１７の外周に整流磁石１８が配置される。さらに、対の第１及び第２ロータコア１５，１６は軸方向に積層される。同様に、上記第２実施形態のロータ６１も、第１及び第２ロータコア６３，６４を複数対備えた構成であってもよい。   In the first embodiment, the rotor 11 includes only a pair of first and second rotor cores 15 and 16. However, the rotor 11 may be configured to include a plurality of pairs of the first and second rotor cores 15 and 16. In this case, the field magnets 17 are disposed between the first and second core bases 21 and 23 of the first and second rotor cores 15 and 16 that make a pair, and the rectifying magnets 18 are disposed on the outer circumferences of the field magnets 17. Is placed. Further, the pair of first and second rotor cores 15 and 16 are laminated in the axial direction. Similarly, the rotor 61 of the second embodiment may be configured to include a plurality of pairs of first and second rotor cores 63 and 64.

・上記第１実施形態、上記第２実施形態及び上記各変更例を組み合わせて実施してもよい。   -You may implement combining said 1st Embodiment, said 2nd Embodiment, and each said modification.

５…ステータ、１１，６１…ロータ、１５，６３…第１ロータコア、１６，６４…第２ロータコア、１７，６５…界磁磁石、１８…整流磁石、２１，７１…コアベースとしての第１コアベース、２２，７２…爪状磁極としての第１爪状磁極、２２ｃ，７２ｃ…固定面としての第１コア側固定面、２２ｄ，１０１，１０２…流入凹部としての第１流入凹部、２３，８１…コアベースとしての第２コアベース、２４，８２…爪状磁極としての第２爪状磁極、２４ｃ，８２ｃ…固定面としての第２コア側固定面、２４ｄ…流入凹部としての第２流入凹部、３１ａ…固定面としての第１磁石側固定面、３２ａ…固定面としての第２磁石側固定面、４１…接着剤、６６…整流磁石としての第１背面磁石、６６ａ…固定面としての第１背面磁石側固定面、６７…整流磁石としての第２背面磁石、６７ａ…固定面としての第２背面磁石側固定面、６８…整流磁石としての第１極間磁石、６８ａ…固定面としての第１極間磁石側固定面、６８ｂ…流入凹部としての第１流入凹部、６９…整流磁石としての第２極間磁石、６９ａ…固定面としての第２極間磁石側固定面、６９ｂ…流入凹部としての第２流入凹部、１０１ａ…傾斜面、１０２ａ…円弧面、１０３…流入凹部、１１１ａ，１１１ｂ…固定面としてのコア側固定面、１１２ａ，１１２ｂ…固定面としての磁石側固定面、１１３ａ，１１３ｂ…流入凹部。   5 ... stator, 11, 61 ... rotor, 15, 63 ... first rotor core, 16, 64 ... second rotor core, 17, 65 ... field magnet, 18 ... rectifier magnet, 21, 71 ... first core as a core base Base, 22, 72 ... 1st claw-shaped magnetic pole as claw-shaped magnetic pole, 22c, 72c ... 1st core side fixed surface as a fixed surface, 22d, 101, 102 ... 1st inflow recessed part as an inflow recessed part, 23, 81 2nd core base as a core base, 24, 82 ... 2nd claw-shaped magnetic pole as claw-shaped magnetic pole, 24c, 82c ... 2nd core side fixed surface as a fixed surface, 24d ... 2nd inflow recessed part as an inflow recessed part 31a: First magnet side fixing surface as a fixing surface, 32a: Second magnet side fixing surface as a fixing surface, 41: Adhesive, 66: First back magnet as a rectifying magnet, 66a: First as a fixing surface 1 back magnet side fixed surface, 7: Second back magnet as rectifier magnet, 67a: Second back magnet side fixed surface as fixed surface, 68: First interpolar magnet as rectifier magnet, 68a: First interpolar magnet side fixed as fixed surface Surface, 68b ... first inflow recess as inflow recess, 69 ... second interpolar magnet as commutation magnet, 69a ... second interpolar magnet side fixed surface as fixed surface, 69b ... second inflow recess as inflow recess , 101a ... inclined surface, 102a ... arc surface, 103 ... inflow recess, 111a, 111b ... core side fixing surface as a fixing surface, 112a, 112b ... magnet side fixing surface as a fixing surface, 113a, 113b ... inflow recess.

Claims (6)

円板状のコアベース及び前記コアベースの外周縁部で周方向に並ぶ複数の爪状磁極をそれぞれ有し、互いの前記爪状磁極が周方向に交互となるように軸方向に重ねられた第１及び第２ロータコアと、
前記第１ロータコアの前記コアベースと前記第２ロータコアの前記コアベースとの間に配置され、前記第１ロータコアの前記爪状磁極と前記第２ロータコアの前記爪状磁極とを周方向に異なる磁極として機能させるように軸方向に磁化された界磁磁石と、
前記界磁磁石の外周で前記爪状磁極の周囲に配置され各前記爪状磁極と同極性の面が対向するように磁化された整流磁石と
を備えたロータであって、
前記第１及び第２ロータコアの前記爪状磁極と前記整流磁石とは、接着剤にて互いに固定される固定面をそれぞれ有し、
前記爪状磁極の前記固定面には、流入凹部が設けられていることを特徴とするロータ。 Each has a disc-shaped core base and a plurality of claw-shaped magnetic poles arranged in the circumferential direction at the outer peripheral edge of the core base, and the claw-shaped magnetic poles are stacked in the axial direction so that the claw-shaped magnetic poles alternate in the circumferential direction. First and second rotor cores;
A magnetic pole disposed between the core base of the first rotor core and the core base of the second rotor core, wherein the claw-shaped magnetic poles of the first rotor core and the claw-shaped magnetic poles of the second rotor core are different in the circumferential direction. A field magnet magnetized in the axial direction to function as
A rotor provided with a rectifying magnet that is arranged around the claw-shaped magnetic pole on the outer periphery of the field magnet and is magnetized so that the surfaces of the same polarity as the claw-shaped magnetic poles face each other;
The claw-shaped magnetic poles and the rectifying magnets of the first and second rotor cores each have a fixed surface fixed to each other with an adhesive,
An inflow recess is provided in the fixed surface of the claw-shaped magnetic pole . 請求項１に記載のロータにおいて、The rotor according to claim 1, wherein
前記流入凹部は、前記爪状磁極の周方向の中央部に設けられ、軸方向に延びる溝状をなしていることを特徴とするロータ。The rotor, wherein the inflow recess is formed in a central portion in the circumferential direction of the claw-shaped magnetic pole and extends in the axial direction. 請求項１又は請求項２に記載のロータにおいて、The rotor according to claim 1 or 2,
前記整流磁石は、ネオジボンド磁石よりなることを特徴とするロータ。The rectifying magnet is a neodymium bonded magnet. 請求項１乃至請求項３の何れか１項に記載のロータにおいて、
前記流入凹部の内周面は、前記固定面から連続して形成され円弧状に湾曲した円弧面を有することを特徴とするロータ。 The rotor according to any one of claims 1 to 3,
The rotor is characterized in that an inner peripheral surface of the inflow recess has an arc surface formed continuously from the fixed surface and curved in an arc shape. 請求項１乃至請求項４の何れか１項に記載のロータにおいて、
前記流入凹部は、前記固定面の軸方向の一端から他端まで軸方向に沿って延びる溝状をなすことを特徴とするロータ。 The rotor according to any one of claims 1 to 4,
The rotor is characterized in that the inflow recess has a groove shape extending in the axial direction from one end to the other end in the axial direction of the fixed surface. 請求項１乃至請求項５の何れか１項に記載のロータと、
回転磁界を発生するステータと
を備えたことを特徴とするモータ。 A rotor according to any one of claims 1 to 5,
A motor comprising a stator that generates a rotating magnetic field.
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