JP6685166B2 - Axial gap type rotating electric machine - Google Patents

Axial gap type rotating electric machine Download PDF

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JP6685166B2
JP6685166B2 JP2016076266A JP2016076266A JP6685166B2 JP 6685166 B2 JP6685166 B2 JP 6685166B2 JP 2016076266 A JP2016076266 A JP 2016076266A JP 2016076266 A JP2016076266 A JP 2016076266A JP 6685166 B2 JP6685166 B2 JP 6685166B2
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magnet
electric machine
gap type
axial gap
protrusion
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JP2017189019A (en
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見多 出口
見多 出口
榎本　裕治
裕治 榎本
博洋 床井
博洋 床井
憲一 相馬
憲一 相馬
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Hitachi Industrial Equipment Systems Co Ltd
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Hitachi Industrial Equipment Systems Co Ltd
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Priority to JP2016076266A priority Critical patent/JP6685166B2/en
Priority to PCT/JP2017/003507 priority patent/WO2017175461A1/en
Priority to TW106107593A priority patent/TWI648939B/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Description

本発明は、アキシャルギャップ型回転電機に関し、とくに回転電機の回転子の構造に関する。   The present invention relates to an axial gap type rotary electric machine, and more particularly to the structure of a rotor of a rotary electric machine.

アキシャルギャップ型回転電機は、固定子と、この固定子と所定の空隙（ギャップ）を介して回転軸方向に配置される回転子で構成される。回転子は、周方向に配置された複数の永久磁石と、前記磁石を保持する保持部材で構成される。   The axial gap type rotary electric machine is composed of a stator and a rotor arranged in the direction of the rotation axis through a predetermined gap (gap) with the stator. The rotor includes a plurality of permanent magnets arranged in the circumferential direction and a holding member that holds the magnets.

アキシャルギャップ型回転電機は、固定子と回転子との対向面積を広くすることで出力を増加させている。加えて、永久磁石の磁力を大きくすることでも出力を増加させることが可能となる。   The axial gap type rotary electric machine increases the output by widening the facing area between the stator and the rotor. In addition, the output can be increased by increasing the magnetic force of the permanent magnet.

これに伴い、磁石に働く吸引力（空隙を介して、固定子方向に作用する電磁力）も増加する。例えば、特許文献１に記載のように磁石のギャップ対向面から軸方向にテーパや切欠を設けることで、軸方向（固定子方向）に働く吸引力に対して磁石を保持する方法がある。また、特許文献２に記載のように、磁石の外径側に設けた筒部の一部を内径側に突出させ、ギャップ部分に磁石を保持するための突起を設けることで磁石を保持する方法がある。   Along with this, the attractive force acting on the magnet (electromagnetic force acting in the direction of the stator via the air gap) also increases. For example, as described in Patent Document 1, there is a method of holding the magnet against an attractive force acting in the axial direction (stator direction) by providing a taper or a notch in the axial direction from the gap facing surface of the magnet. Further, as described in Patent Document 2, a method of holding a magnet by projecting a part of a cylindrical portion provided on the outer diameter side of the magnet to the inner diameter side and providing a protrusion for holding the magnet in the gap portion. There is.

特開2009-131087号公報JP 2009-131087 JP 特開2010-259164号公報JP 2010-259164 JP

しかしながら、 特許文献１に記載の保持構造では、テーパないしは切欠を設けているため、固定子と対向する磁石の表面積が減少するため、回転電機のトルク低下や効率低下を招くことが課題となる。一方、特許文献２に記載の保持構造では、磁石を保持するためにギャップ部分に突起を設けた構造となっており、突起の厚み分だけギャップ長が増加するために回転電機のトルク低下や効率低下を招くことが課題となる。   However, in the holding structure described in Patent Document 1, since the taper or the notch is provided, the surface area of the magnet facing the stator is reduced, which causes a problem that the torque and efficiency of the rotating electric machine are reduced. On the other hand, the holding structure described in Patent Document 2 has a structure in which a protrusion is provided in the gap portion for holding the magnet, and the gap length increases by the thickness of the protrusion, so that the torque of the rotating electric machine is reduced and the efficiency is improved. The problem is to cause a decrease.

本発明は、上記の課題を解決するため、磁石表面積の減少やギャップ長の増加を招くおそれを低減させ、磁石の軸方向吸引力に対する保持強度を確保可能なアキシャルギャップ型回転電機を提供することを目的とする。   In order to solve the above problems, the present invention provides an axial gap type rotating electric machine that reduces the risk of reducing the surface area of the magnet and the increase of the gap length, and can secure the holding strength of the magnet with respect to the axial attraction force. With the goal.

上記の目的を達成するために、本発明ではその一例として、回転軸方向に空隙を介して固定子と回転子とが配置されるアキシャルギャップ型回転電機において、前記回転子に配置される磁石の内径側または外周側であって、かつ軸方向の中途に切欠が設けられ、前記磁石を保持するヨークに、前記磁石の切欠と嵌合する突起が設けられおり、前記磁石の内径側に設けた前記突起の一部が除去されており、かつ、前記突起の除去部が前記磁石の内径側の周長よりも大きいように構成される。あるいは、回転軸方向に空隙を介して固定子と回転子とが配置されるアキシャルギャップ型回転電機において、前記回転子に配置される磁石の内径側または外周側であって、かつ軸方向の中途に切欠が設けられ、前記磁石を保持するヨークに、前記磁石の切欠と嵌合する突起が設けられており、前記突起が前記磁石の外径側に配置される外周リングに設けられており、前記外周リングに設けた突起の一部が除去されており、かつ、前記突起の除去部が前記磁石の外径側の周長よりも大きいように構成される。
In order to achieve the above object, in the present invention, as an example thereof, in an axial gap type rotary electric machine in which a stator and a rotor are arranged with a gap in the rotation axis direction, a magnet arranged in the rotor is used. A notch is provided on the inner diameter side or the outer circumference side in the middle of the axial direction, and a protrusion for fitting with the notch of the magnet is provided on the yoke holding the magnet, and the notch is provided on the inner diameter side of the magnet. Part of the protrusion is removed, and the removed portion of the protrusion is configured to be larger than the circumference of the magnet on the inner diameter side. Alternatively, in an axial gap type rotating electric machine in which a stator and a rotor are arranged with a gap in the direction of the rotation axis, an inner diameter side or an outer circumference side of a magnet arranged in the rotor, and a midway in the axial direction. A notch is provided on the yoke that holds the magnet, a protrusion that fits into the notch of the magnet is provided, and the protrusion is provided on the outer peripheral ring that is arranged on the outer diameter side of the magnet. A part of the protrusion provided on the outer peripheral ring is removed, and the removed portion of the protrusion is configured to be larger than the outer circumferential length of the magnet .

本発明によれば、磁石表面積の減少やギャップ長の増加を招くおそれを低減させ、モータのトルクや効率の低下を抑制しつつ、軸方向吸引力に対して磁石を保持することが可能となる。   ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to hold | maintain a magnet with respect to an axial attraction | suction force, reducing the possibility of causing a decrease in a magnet surface area and an increase in a gap length, suppressing a fall in a motor torque and efficiency. .

本発明の実施形態のアキシャルギャップ型回転電機の斜視図。The perspective view of the axial gap type rotary electric machine of the embodiment of the present invention. 本発明の実施形態のアキシャルギャップ型回転電機の断面図。Sectional drawing of the axial gap type rotary electric machine of embodiment of this invention. 本発明の実施形態のアキシャルギャップ型回転電機の回転子構造の斜視図。The perspective view of the rotor structure of the axial gap type rotary electric machine of the embodiment of the present invention. 本発明の実施形態のアキシャルギャップ型回転電機の回転子構造の斜視図。The perspective view of the rotor structure of the axial gap type rotary electric machine of the embodiment of the present invention. 本発明の実施形態のアキシャルギャップ型回転電機の断面図。Sectional drawing of the axial gap type rotary electric machine of embodiment of this invention. 本発明の実施形態のアキシャルギャップ型回転電機の断面図。Sectional drawing of the axial gap type rotary electric machine of embodiment of this invention. 本発明の実施形態のアキシャルギャップ型回転電機の回転子構造の斜視図。The perspective view of the rotor structure of the axial gap type rotary electric machine of the embodiment of the present invention. 本発明の実施形態のアキシャルギャップ型回転電機の回転子構造の斜視図。The perspective view of the rotor structure of the axial gap type rotary electric machine of the embodiment of the present invention. 本発明の実施形態のアキシャルギャップ型回転電機の回転子構造の上面図。The top view of the rotor structure of the axial gap type rotary electric machine of the embodiment of the present invention. 本発明の実施形態のアキシャルギャップ型回転電機の回転子構造の上面図。The top view of the rotor structure of the axial gap type rotary electric machine of the embodiment of the present invention.

以下、本発明の実施例について説明する。図１および図２に本発明を適用する２ロータ型のアキシャルギャップ型回転電機の基本構成を説明するための斜視図を示す。同図に示すように、アキシャルギャップ型回転電機１は，回転軸５０方向に一対の円板形状の回転子１０を対向するように配置し，一対の回転子１０の間に所定のギャップを介して固定子２０を挟み込んだ構造を有している。   Examples of the present invention will be described below. 1 and 2 are perspective views for explaining the basic configuration of a two-rotor type axial gap type rotary electric machine to which the present invention is applied. As shown in the figure, the axial gap type rotary electric machine 1 has a pair of disc-shaped rotors 10 arranged to face each other in the direction of the rotation axis 50, and a predetermined gap is interposed between the pair of rotors 10. It has a structure in which the stator 20 is sandwiched.

＜固定子＞
固定子２０は，周方向に配置される複数のコア２２と，各コアの周囲に巻回されるコイル２１から構成され、例えば樹脂によるモールドや機械部品（図示省略）によってハウジング４０へと保持される。コア２１は，渦電流の発生を抑制するために，例えば電磁鋼板やアモルファス箔帯などの磁性薄板の積層体で構成されており，各磁性薄板間は絶縁層で絶縁されている。 <Stator>
The stator 20 is composed of a plurality of cores 22 arranged in the circumferential direction and a coil 21 wound around each core, and is held in the housing 40 by, for example, resin molding or mechanical parts (not shown). It The core 21 is formed of a laminated body of magnetic thin plates such as an electromagnetic steel plate or an amorphous foil strip in order to suppress the generation of eddy currents, and the magnetic thin plates are insulated by an insulating layer.

＜回転子＞
回転子１０は，軸方向に凹部を有するヨーク１２と，各凹部に配置されるロータコア１３を有する。ロータコア１３は，例えば接着によってヨーク１２の凹部に設置されている。 <Rotor>
The rotor 10 has a yoke 12 having a recess in the axial direction and a rotor core 13 arranged in each recess. The rotor core 13 is installed in the recess of the yoke 12 by, for example, bonding.

なお，本発明は上述した２ロータ型のアキシャルギャップ型回転電機に限定されるものではなく、例えば、軸方向に一対の固定子を対向するように配置して、所定のギャップを介して回転子が配置された２ステータ型のアキシャルギャップ型回転電機や、１つの固定子と回転子とが所定のギャップを配置して配置される１ロータ-１ステータ型のアキシャルギャップ型回転電機にも適用可能であることは言うまでもない。
以後，回転子構造に関する実施例を説明する。 The present invention is not limited to the two-rotor axial gap type rotating electric machine described above, and for example, a pair of stators are arranged so as to face each other in the axial direction, and a rotor is provided via a predetermined gap. It is also applicable to a two-stator type axial gap type rotary electric machine having two stators and a one rotor-one stator type axial gap type rotary electric machine in which one stator and a rotor are arranged with a predetermined gap. Needless to say.
Hereinafter, examples of the rotor structure will be described.

実施例（１）
図２から図４に実施形態１のアキシャルギャップ型回転電機の回転子構造を示す。同図らに示すように、実施形態１の回転子構造によれば、ヨーク１２の内径側に突起１２ａを設け、かつ、磁石１１の内径側に切欠１１ａを設けている。磁石１１は外径側から挿入され、切欠１１ａが突起１２ａに嵌合するように配置する。磁石１１を周方向に複数配置したのち、磁石１１の外径側に外周リング１４を設ける。また、磁石１１とロータコア１３は、磁石の吸引力に加えて、例えば接着剤による接着力によって固定してもよい。 Example (1)
2 to 4 show the rotor structure of the axial gap type rotary electric machine according to the first embodiment. As shown in the figure, according to the rotor structure of the first embodiment, the protrusion 12a is provided on the inner diameter side of the yoke 12, and the notch 11a is provided on the inner diameter side of the magnet 11. The magnet 11 is inserted from the outer diameter side and arranged so that the notch 11a fits into the projection 12a. After a plurality of magnets 11 are arranged in the circumferential direction, an outer peripheral ring 14 is provided on the outer diameter side of the magnet 11. Further, the magnet 11 and the rotor core 13 may be fixed by, for example, an adhesive force of an adhesive in addition to the attractive force of the magnet.

以上に示した第１実施例のアキシャルギャップ型回転電機の回転子構造によれば、ヨーク１２に設けた突起１２ａに、磁石１１の切欠１１ａを嵌合しているため、回転電機を駆動した際に磁石が軸方向（ステータ方向）に引っ張られて剥がれ落ちることを防ぐことが可能となる。また、突起１２ａと切欠１１ａの嵌合により、軸方向の位置決め精度を高めることも可能となる。さらに、突起１２ａと切欠１１ａは、磁石１１の回転軸５０方向に沿った側面の中途に設けているため、磁石１１とコア２２との対向面積をより多く確保し、高出力を維持しながら、磁石の軸方向吸引力に対する保持強度を確保することが出来る。   According to the rotor structure of the axial gap type rotary electric machine of the first embodiment described above, the notch 11a of the magnet 11 is fitted to the protrusion 12a provided on the yoke 12, and therefore when the rotary electric machine is driven. In addition, it is possible to prevent the magnet from being pulled in the axial direction (stator direction) and coming off. In addition, the positioning accuracy in the axial direction can be improved by fitting the protrusion 12a and the notch 11a. Further, since the protrusion 12a and the notch 11a are provided in the middle of the side surface of the magnet 11 along the direction of the rotation axis 50, a larger facing area between the magnet 11 and the core 22 is secured, and high output is maintained, It is possible to secure the holding strength against the axial attraction force of the magnet.

なお、突起１２ａと切欠１１ａを設ける位置は、磁石１１の回転軸５０方向に沿った側面の略中間が、保持強度の観点で望ましいが、本発明はこれに限定されるものではない。   It should be noted that the protrusion 12a and the notch 11a are preferably provided at a position approximately in the middle of the side surface of the magnet 11 along the direction of the rotation axis 50 from the viewpoint of holding strength, but the present invention is not limited thereto.

また、本実施例では、突起１２ａを周方向の全周に設けているため、より磁石の軸方向吸引力に対する保持強度を確保することが出来る。なお、本発明は、これに限られず、突起１２ａを周方向の部分的に設けられても構わない。例えば、図１０に示すように、磁石１１の分割数に合わせて独立した突起１２ａを設け、各突起１２に対応する切欠１１ａを設けて突起１２ａに、磁石１１の切欠１１ａを嵌合させてもよい。これにより、軸方向の位置決め精度を高めることも可能となる。   Further, in this embodiment, since the projections 12a are provided on the entire circumference in the circumferential direction, it is possible to further secure the holding strength against the axial attraction force of the magnet. The present invention is not limited to this, and the protrusion 12a may be partially provided in the circumferential direction. For example, as shown in FIG. 10, even if independent projections 12a are provided according to the number of divisions of the magnet 11 and cutouts 11a corresponding to each projection 12 are provided and the cutouts 11a of the magnet 11 are fitted to the projections 12a. Good. This also makes it possible to improve the positioning accuracy in the axial direction.

実施例（２）
図５に実施形態２のアキシャルギャップ型回転電機の回転子構造を示す。同図に示すように、実施形態２の回転子構造によれば、実施形態１の構成に加えて、内周側に内周リング１５を設ける。また、内周リング１５に突起１５ａを設けて、磁石１１に設けた切欠１１ａを嵌合して配置する。 Example (2)
FIG. 5 shows the rotor structure of the axial gap type rotary electric machine according to the second embodiment. As shown in the figure, according to the rotor structure of the second embodiment, in addition to the configuration of the first embodiment, the inner peripheral ring 15 is provided on the inner peripheral side. Further, the inner peripheral ring 15 is provided with the projection 15a, and the notch 11a provided in the magnet 11 is fitted and arranged.

以上に示した構造によれば、内周リング１５および突起１５ａを別部材で構成することができるため、突起１５ａを製作する際の製作性が向上する。また、内周リング１５および突起１５ａを別部材で構成しているため、例えば高強度部材を使用することで軸方向への引張力に対する耐強度を向上させることが出来る。また、内周リング１５および突起１５ａを低損失部材にすることで、磁石１１の漏れ磁束やコイル２１が発生させる磁束が作用することで発生する損失を低減することも可能となる。このように、回転電機の特性に応じて部材の材質を変更することができる利点がある。   According to the structure described above, since the inner peripheral ring 15 and the protrusion 15a can be formed by separate members, the manufacturability when the protrusion 15a is manufactured is improved. Moreover, since the inner peripheral ring 15 and the protrusion 15a are formed by separate members, for example, by using a high-strength member, it is possible to improve the strength against the tensile force in the axial direction. Further, by using the low-loss member for the inner ring 15 and the protrusion 15a, it is possible to reduce the loss generated by the leakage magnetic flux of the magnet 11 or the magnetic flux generated by the coil 21 acting. Thus, there is an advantage that the material of the member can be changed according to the characteristics of the rotary electric machine.

実施例（３）
図６は実施形態３のアキシャルギャップ型回転電機の回転子構造を示す。同図に示すように、実施形態３の回転子構造によれば、切欠１１ａを磁石１１の外径側に設け、かつ、切欠１１ａと嵌合するための突起１４ａを外周リング１４に設ける。 Example (3)
FIG. 6 shows a rotor structure of an axial gap type rotary electric machine according to the third embodiment. As shown in the figure, according to the rotor structure of the third embodiment, the notch 11a is provided on the outer diameter side of the magnet 11, and the protrusion 14a for fitting with the notch 11a is provided on the outer peripheral ring 14.

本実施例では、磁石１１の外周側に切欠１１ａを設けているため、実施形態１および２とは逆に、磁石１１を内径側から挿入して組み立てる必要があるが、内径側から挿入して組み立てる場合、最後に挿入する磁石を組み立てることが不可能となる。また、外周リング１４を複数に分割することで組み立てることが可能となるが、耐遠心力強度が低下してしまう。そこで、全ての磁石を組み立てることを可能とし、かつ、外周リングを分割することなく本実施例を実現するための組立方法の一例を図７から図９に示す。   In the present example, since the notch 11a is provided on the outer peripheral side of the magnet 11, it is necessary to insert the magnet 11 from the inner diameter side to assemble, contrary to the first and second embodiments, but it is necessary to insert it from the inner diameter side. When assembling, it becomes impossible to assemble the last inserted magnet. Further, although it is possible to assemble the outer peripheral ring 14 by dividing it into a plurality of pieces, the centrifugal force resistance is reduced. Therefore, FIGS. 7 to 9 show an example of an assembling method for enabling all the magnets to be assembled and realizing the present embodiment without dividing the outer peripheral ring.

図７および図８に示すように、外周リング１４に設けた突起１４ａの一部を取り除いている（同図１４ｂで示した箇所）。また、突起除去部１４ｂの幅は、磁石１１の外径側の幅と同じか、それよりも大きくなるように構成する。次に、磁石１１を軸方向から前述の突起除去部１４ｂに挿入し、その後、切欠１１ａと突起１４ａを嵌合した状態で周方向にスライドさせる。全ての磁石について同様の方法をくり返すことで全ての磁石を設置することが可能となる。   As shown in FIGS. 7 and 8, a part of the protrusion 14a provided on the outer peripheral ring 14 is removed (the portion shown in FIG. 14b). Further, the width of the protrusion removing portion 14b is configured to be equal to or larger than the width of the magnet 11 on the outer diameter side. Next, the magnet 11 is inserted from the axial direction into the above-mentioned protrusion removing portion 14b, and then, the notch 11a and the protrusion 14a are fitted and slid in the circumferential direction. It is possible to install all the magnets by repeating the same method for all the magnets.

図９は、上述により組み立てた回転子の構造を示している。同図に示すように、全ての磁石を組み立てた際、突起除去部１４ｂに２つの磁石１１が配置されるようにすることで、全ての磁石１１に突起１４ａが嵌合された状態となる。   FIG. 9 shows the structure of the rotor assembled as described above. As shown in the figure, when all the magnets are assembled, the protrusions 14a are fitted to all the magnets 11 by disposing the two magnets 11 in the protrusion removing portion 14b.

以上に示した構造によれば、外周リング１４を分割することなく磁石１１を組み立てることが可能となる。また、磁石１１の外径側で切欠１１ａと突起１４ａを嵌合することで、実施形態１および２に示した構造と比較して嵌合する面積を広く確保することが可能となり、磁石１１の軸方向への引張力に対する保持強度を向上させることが可能となる。   According to the structure shown above, the magnet 11 can be assembled without dividing the outer peripheral ring 14. Further, by fitting the notch 11a and the protrusion 14a on the outer diameter side of the magnet 11, it is possible to secure a wider fitting area as compared with the structures shown in the first and second embodiments. It becomes possible to improve the holding strength against the tensile force in the axial direction.

１：アキシャルギャップ型回転電機
１０：回転子
１１：磁石
１１ａ：切欠
１２：ヨーク
１２ａ：突起
１３：ロータコア
１４：外周リング
１４ａ：突起
１４ｂ：突起除去部
１５：内周リング
１５ａ：突起
２０：固定子
２１：コイル
２２：コア
４０：ケース（ハウジング）
５０：回転軸
６０：軸受
７０：シャフト 1: Axial gap type rotating electric machine 10: Rotor 11: Magnet 11a: Notch 12: Yoke 12a: Protrusion 13: Rotor core 14: Outer peripheral ring 14a: Protrusion 14b: Protrusion removal portion 15: Inner peripheral ring 15a: Protrusion 20: Stator 21: coil 22: core 40: case (housing)
50: rotating shaft 60: bearing 70: shaft

Claims (7)

回転軸方向に空隙を介して固定子と回転子とが配置されるアキシャルギャップ型回転電機において、
前記回転子に配置される磁石の内径側または外周側であって、かつ軸方向の中途に切欠が設けられ、
前記磁石を保持するヨークに、前記磁石の切欠と嵌合する突起が設けられおり、
前記磁石の内径側に設けた前記突起の一部が除去されており、かつ、前記突起の除去部が前記磁石の内径側の周長よりも大きいことを特徴とするアキシャルギャップ型回転電機 In an axial gap type rotating electric machine in which a stator and a rotor are arranged with a gap in the rotation axis direction,
A notch is provided on the inner diameter side or outer circumference side of the magnet arranged in the rotor, and in the middle of the axial direction,
The yoke that holds the magnet is provided with a protrusion that fits into the notch of the magnet ,
A part of the protrusion provided on the inner diameter side of the magnet is removed, and the removed portion of the protrusion is larger than the circumference of the magnet on the inner diameter side. 請求項１に記載されたアキシャルギャップ型回転電機であって、
前記突起が前記磁石の内径側に配置される内周リングに設けられていることを特徴とするアキシャルギャップ型回転電機。 The axial gap type rotating electric machine according to claim 1,
An axial gap type rotating electric machine, wherein the protrusion is provided on an inner peripheral ring arranged on the inner diameter side of the magnet. 回転軸方向に空隙を介して固定子と回転子とが配置されるアキシャルギャップ型回転電機において、
前記回転子に配置される磁石の内径側または外周側であって、かつ軸方向の中途に切欠が設けられ、
前記磁石を保持するヨークに、前記磁石の切欠と嵌合する突起が設けられており、
前記突起が前記磁石の外径側に配置される外周リングに設けられており、
前記外周リングに設けた突起の一部が除去されており、かつ、前記突起の除去部が前記磁石の外径側の周長よりも大きいことを特徴とするアキシャルギャップ型回転電機。 In an axial gap type rotating electric machine in which a stator and a rotor are arranged with a gap in the rotation axis direction,
A notch is provided on the inner diameter side or outer circumference side of the magnet arranged in the rotor, and in the middle of the axial direction,
The yoke that holds the magnet is provided with a protrusion that fits into the notch of the magnet,
The protrusion is provided on an outer peripheral ring arranged on the outer diameter side of the magnet,
An axial gap type rotary electric machine , wherein a part of the protrusion provided on the outer peripheral ring is removed, and a removed portion of the protrusion is larger than a circumferential length of the magnet on the outer diameter side . 請求項１から３のいずれか１項に記載されたアキシャルギャップ型回転電機であって、
前記磁石は周方向に分割された複数個の分割磁石で構成されることを特徴とするアキシャルギャップ型回転電機。 The axial gap type rotating electric machine according to any one of claims 1 to 3 ,
An axial gap type rotating electric machine, wherein the magnet is composed of a plurality of divided magnets divided in a circumferential direction. 請求項１から４のいずれか１項に記載されたアキシャルギャップ型回転電機であって、
前記磁石に設けられた切欠が、前記磁石の軸方向中央部から前記ヨーク側にずれた位置に設けられており、かつ、前記ヨークとの接触面部分に切欠が露出しない位置に設けられていることを特徴とするアキシャルギャップ型回転電機。 The axial gap type rotary electric machine according to any one of claims 1 to 4 ,
The notch provided in the magnet is provided at a position displaced from the central portion in the axial direction of the magnet to the yoke side, and is provided at a position where the notch is not exposed at the contact surface portion with the yoke. An axial gap type rotating electrical machine characterized by the above. 請求項１から４のいずれか１項に記載されたアキシャルギャップ型回転電機であって、
前記磁石に設けられた切欠が、前記磁石の軸方向中央部から前記空隙側にずれた位置に設けられており、かつ、前記空隙部分に切欠が露出しない位置に設けられていることを特徴とするアキシャルギャップ型回転電機。 The axial gap type rotary electric machine according to any one of claims 1 to 4 ,
The notch provided in the magnet is provided at a position displaced from the central portion in the axial direction of the magnet to the void side, and is provided at a position where the notch is not exposed in the void portion. Axial gap type rotating electrical machine. 請求項１から６のいずれか１項に記載されたアキシャルギャップ型回転電機であって、
前記突起及び前記切欠は、前記磁石の軸方向の中央部に設けられていることを特徴とするアキシャルギャップ型回転電機。 The axial gap type rotary electric machine according to any one of claims 1 to 6 ,
The axial gap type electric rotating machine, wherein the protrusion and the notch are provided in a central portion in the axial direction of the magnet.
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