JP2008154329A - Motor having embedded permanent magnet - Google Patents

Motor having embedded permanent magnet Download PDF

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Publication number
JP2008154329A
JP2008154329A JP2006337874A JP2006337874A JP2008154329A JP 2008154329 A JP2008154329 A JP 2008154329A JP 2006337874 A JP2006337874 A JP 2006337874A JP 2006337874 A JP2006337874 A JP 2006337874A JP 2008154329 A JP2008154329 A JP 2008154329A
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Japan
Prior art keywords
rotating shaft
permanent magnet
attached
concave portion
recess
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JP2006337874A
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Japanese (ja)
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Mineo Takahashi
岑夫 高橋
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A & A Kenkyusho Kk
RICCHISUTOON KK
RichStone Ltd Japan
A&A Kenkyusho KK
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A & A Kenkyusho Kk
RICCHISUTOON KK
RichStone Ltd Japan
A&A Kenkyusho KK
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Application filed by A & A Kenkyusho Kk, RICCHISUTOON KK, RichStone Ltd Japan, A&A Kenkyusho KK filed Critical A & A Kenkyusho Kk
Priority to JP2006337874A priority Critical patent/JP2008154329A/en
Publication of JP2008154329A publication Critical patent/JP2008154329A/en
Pending legal-status Critical Current

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  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motor having an embedded permanent magnet which has a simple structure and can be easily manufactured. <P>SOLUTION: This motor is manufactured so that a stator 2 is fixed on a casing 1, a rotary shaft 7 is rotatably supported on the casing 1, a concave portion 8 is provided on the rotary shaft 7, rectangular bulging concave portions are provided on both sides of the bottom of the concave portion 8, an attaching member 10 is attached on the concave portion 8, rectangular bulging convex portions are provided on both the sides of the attaching member 10, the bulging convex portions are engaged with the bulging concave portions, the rotary shaft 7 and the attaching member 10 each have a round cross section at a portion where the attaching member 10 is attached in a state where the attaching member 10 is attached on the rotary shaft 7, and the permanent magnets 12 are attached on the surface of the rotary shaft 7 side of the attaching member 10, i.e. the internal side surface. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は埋め込まれた永久磁石を有する永久磁石埋め込みモータに関するものである。   The present invention relates to a permanent magnet embedded motor having an embedded permanent magnet.

従来の永久磁石埋め込みモータにおいては、特許文献１に示されるように、回転軸にロータが取り付けられ、ロータの内部にスリットが設けられ、スリット内に永久磁石が挿入されている。   In a conventional permanent magnet embedded motor, as shown in Patent Document 1, a rotor is attached to a rotating shaft, a slit is provided inside the rotor, and a permanent magnet is inserted into the slit.

この永久磁石埋め込みモータにおいては、リラクタンストルクを有効に利用することができるから、効率が良好である。
特開２０００−５０５４３号公報 In this permanent magnet embedded motor, since the reluctance torque can be used effectively, the efficiency is good.
JP 2000-50543 A

しかし、このような永久磁石埋め込みモータにおいては、回転軸にロータが取り付けられているから、構造が複雑になり、またロータの内部にスリットを設ける必要があるから、製造が困難である。   However, in such a permanent magnet embedded motor, since the rotor is attached to the rotating shaft, the structure is complicated, and it is necessary to provide a slit in the rotor, and thus it is difficult to manufacture.

本発明は上述の課題を解決するためになされたもので、構造が簡単であり、また製造が容易である永久磁石埋め込みモータを提供することを目的とする。   The present invention has been made to solve the above-described problems, and an object thereof is to provide a permanent magnet embedded motor that has a simple structure and is easy to manufacture.

この目的を達成するため、本発明においては、ケーシングに固定されたステータと、上記ケーシングに回転可能に支持された回転軸と、上記回転軸に取り付けられた取付部材と、取付部材の内側面に取り付けられた永久磁石とを設ける。   In order to achieve this object, in the present invention, a stator fixed to a casing, a rotating shaft rotatably supported by the casing, a mounting member attached to the rotating shaft, and an inner surface of the mounting member An attached permanent magnet is provided.

この場合、上記回転軸に張出凹部を有する凹部を設け、上記取付部材に張出凸部を設け、上記凹部内に上記取付部材を取り付け、上記張出凹部に上記張出凸部係合してもよい。   In this case, the rotating shaft is provided with a concave portion having a protruding concave portion, the mounting member is provided with a protruding convex portion, the mounting member is mounted in the concave portion, and the protruding convex portion is engaged with the protruding concave portion. May be.

また、上記回転軸に第１の半円凹部を有する凹部を設け、上記取付部材に第２の半円凹部を設け、上記凹部内に上記取付部材を取り付け、上記第１、第２の半円凹部内にピンを挿入してもよい。   Also, a recess having a first semicircular recess is provided on the rotating shaft, a second semicircular recess is provided on the attachment member, the attachment member is attached in the recess, and the first and second semicircles are provided. A pin may be inserted into the recess.

また、上記回転軸に凹部を設け、上記凹部内に上記取付部材を接着により取り付けてもよい。   Moreover, a recessed part may be provided in the said rotating shaft, and the said attachment member may be attached by adhesion | attachment in the said recessed part.

本発明に係る永久磁石埋め込みモータにおいては、回転軸にロータが取り付けられていないから、構造が簡単であり、また回転軸の内部にスリットを設ける必要がないから、製造が容易である。   In the permanent magnet embedded motor according to the present invention, since the rotor is not attached to the rotating shaft, the structure is simple, and since it is not necessary to provide a slit in the rotating shaft, the manufacturing is easy.

また、回転軸に張出凹部を有する凹部を設け、取付部材に張出凸部を設け、凹部内に取付部材を取り付け、張出凹部に張出凸部係合したときには、回転軸が回転したときの遠心力によって取付部材が回転軸から外れるのを確実に防止することができる。   In addition, when the concave portion having the protruding concave portion is provided on the rotating shaft, the protruding convex portion is provided on the mounting member, the mounting member is mounted in the concave portion, and when the protruding convex portion is engaged with the protruding concave portion, the rotating shaft rotates. It is possible to reliably prevent the attachment member from being detached from the rotating shaft due to the centrifugal force.

また、回転軸に第１の半円凹部を有する凹部を設け、取付部材に第２の半円凹部を設け、凹部内に取付部材を取り付け、第１、第２の半円凹部内にピンを挿入したときには、回転軸が回転したときの遠心力によって取付部材が回転軸から外れるのを確実に防止することができ、しかも製造が容易である。   Also, a recess having a first semicircular recess is provided on the rotation shaft, a second semicircular recess is provided on the mounting member, the mounting member is mounted in the recess, and a pin is installed in the first and second semicircular recesses. When inserted, it is possible to reliably prevent the attachment member from being detached from the rotating shaft by centrifugal force when the rotating shaft rotates, and the manufacture is easy.

また、回転軸に凹部を設け、凹部内に取付部材を接着により取り付けたときには、製造が容易である。   Further, when a concave portion is provided on the rotation shaft and the attachment member is attached in the concave portion by bonding, the manufacturing is easy.

図１は本発明に係る永久磁石埋め込みモータを示す概略断面図、図２は図１のＡ−Ａ拡大断面図である。図に示すように、ケーシング１にステータ２が固定され、ケーシング１に軸受支え３、４が固定され、軸受支え３、４に軸受５、６を介して炭素鋼からなる回転軸７が回転可能に支持されている。すなわち、ケーシング１に回転軸７が回転可能に支持されている。また、回転軸７に凹部８が設けられ、凹部８の底部両側には矩形状の張出凹部９が設けられ、張出凹部９は回転軸７の中心軸と直角に交わる直線に対して直角な直線と平行な方向に張り出している。なお、張出凹部９を有する凹部８は回転軸７の図１紙面下側の一部に設けられている。また、凹部８に珪素鋼、アームコ鉄などからなる取付部材１０が取り付けられ、取付部材１０の両側部に矩形状の張出凸部１１が設けられ、張出凸部１１が張出凹部９に係合しており、回転軸７に取付部材１０が取り付けられた状態の、取付部材１０が取り付けられた部分の回転軸７、取付部材１０の断面外形は円形である。また、取付部材１０の回転軸７側の面すなわち内側面には永久磁石１２が取り付けられている。なお、永久磁石１２は取付部材１０の図１紙面上側の一部に設けられ、永久磁石１２はステータ２と対向する所に位置している。また、回転軸７に取付部材１０を取り付けるには、永久磁石１２が取り付けられた取付部材１０を図１紙面上方に移動して、取付部材１０を凹部８内に挿入する。   FIG. 1 is a schematic sectional view showing a permanent magnet embedded motor according to the present invention, and FIG. 2 is an AA enlarged sectional view of FIG. As shown in the figure, a stator 2 is fixed to a casing 1, bearing supports 3 and 4 are fixed to the casing 1, and a rotating shaft 7 made of carbon steel is rotatable on the bearing supports 3 and 4 via bearings 5 and 6. It is supported by. That is, the rotating shaft 7 is rotatably supported by the casing 1. The rotating shaft 7 is provided with a recess 8, and a rectangular protruding recess 9 is provided on both sides of the bottom of the recess 8, and the protruding recess 9 is perpendicular to the straight line that intersects the central axis of the rotating shaft 7 at right angles. Projecting in a direction parallel to a straight line. In addition, the recessed part 8 which has the overhanging recessed part 9 is provided in a part of FIG. In addition, an attachment member 10 made of silicon steel, arm iron, or the like is attached to the recess 8, a rectangular protrusion 11 is provided on both sides of the attachment member 10, and the protrusion 11 is formed on the protrusion 9. The cross-sectional outer shapes of the rotary shaft 7 and the mounting member 10 in a portion where the mounting member 10 is attached in a state where the mounting member 10 is attached to the rotary shaft 7 are circular. A permanent magnet 12 is attached to the surface of the attachment member 10 on the rotating shaft 7 side, that is, the inner side surface. The permanent magnet 12 is provided on a part of the mounting member 10 on the upper side in FIG. 1, and the permanent magnet 12 is located at a position facing the stator 2. Further, in order to attach the attachment member 10 to the rotating shaft 7, the attachment member 10 to which the permanent magnet 12 is attached is moved upward in FIG. 1 to insert the attachment member 10 into the recess 8.

このような永久磁石埋め込みモータにおいては、回転軸７にロータが取り付けられていないから、構造が簡単であり、また回転軸７の内部にスリットを設ける必要がないから、製造が容易である。また、取付部材１０の張出凸部１１が張出凹部９に係合しているから、回転軸７が回転したときの遠心力によって取付部材１０が回転軸７から外れるのを確実に防止することができる。また、回転軸７が炭素鋼からなるから、回転軸７の強度が大きく、しかも取付部材１０が珪素鋼、アームコ鉄などからなるから、取付部材１０のリラクタンスが小さい。   In such a permanent magnet embedded motor, since the rotor is not attached to the rotating shaft 7, the structure is simple, and since it is not necessary to provide a slit in the rotating shaft 7, the manufacturing is easy. Further, since the protruding protrusion 11 of the mounting member 10 is engaged with the protruding recess 9, the mounting member 10 is reliably prevented from being detached from the rotating shaft 7 due to the centrifugal force when the rotating shaft 7 rotates. be able to. Further, since the rotating shaft 7 is made of carbon steel, the strength of the rotating shaft 7 is high, and the mounting member 10 is made of silicon steel, arm iron, etc., and therefore the reluctance of the mounting member 10 is small.

図３は本発明に係る他の永久磁石埋め込みモータの一部を示す断面図で、図２と同様の断面図である。図に示すように、回転軸７に凹部２１が設けられ、凹部２１の底部両側には三角状の張出凹部２２が設けられている。また、凹部２１に取付部材２３が取り付けられ、取付部材２３に三角状の張出凸部２４が設けられ、張出凸部２４が張出凹部２２に係合しており、回転軸７に取付部材２３が取り付けられた状態の、取付部材２３が取り付けられた部分の回転軸７、取付部材２３の断面外形は円形である。また、取付部材２３の内側面には永久磁石１２が取り付けられている。そして、その他の構成は図１、図２に示した永久磁石埋め込みモータと同様の構成である。   FIG. 3 is a sectional view showing a part of another permanent magnet embedded motor according to the present invention, and is the same sectional view as FIG. As shown in the figure, a concave portion 21 is provided on the rotating shaft 7, and triangular protruding concave portions 22 are provided on both sides of the bottom portion of the concave portion 21. An attachment member 23 is attached to the recess 21, a triangular projecting protrusion 24 is provided on the attachment member 23, and the projecting protrusion 24 is engaged with the projecting recess 22. The cross-sectional outer shape of the rotary shaft 7 and the attachment member 23 in the portion where the attachment member 23 is attached in a state where the member 23 is attached is circular. A permanent magnet 12 is attached to the inner surface of the attachment member 23. The other configuration is the same as that of the permanent magnet embedded motor shown in FIGS.

このような永久磁石埋め込みモータにおいては、回転軸７にロータが取り付けられていないから、構造が簡単であり、また回転軸７の内部にスリットを設ける必要がないから、製造が容易である。また、取付部材２３の張出凸部２４が張出凹部２２に係合しているから、回転軸７が回転したときの遠心力によって取付部材２３が回転軸７から外れるのを確実に防止することができる。   In such a permanent magnet embedded motor, since the rotor is not attached to the rotating shaft 7, the structure is simple, and since it is not necessary to provide a slit in the rotating shaft 7, the manufacturing is easy. Further, since the protruding convex portion 24 of the mounting member 23 is engaged with the protruding concave portion 22, the mounting member 23 is reliably prevented from being detached from the rotating shaft 7 due to the centrifugal force when the rotating shaft 7 rotates. be able to.

図４は本発明に係る他の永久磁石埋め込みモータの一部を示す断面図で、図２と同様の断面図である。図に示すように、回転軸７に凹部３１が設けられ、凹部３１の両側部には半円状の第１の半円凹部３２が設けられている。また、凹部３１に取付部材３３が取り付けられ、回転軸７に取付部材３３が取り付けられた状態の、取付部材３３が取り付けられた部分の回転軸７、取付部材３３の断面外形は円形である。また、取付部材３３の側部に半円状の第２の半円凹部３４が設けられ、凹部３１に取付部材３３が取り付けられた状態では半円凹部３２と半円凹部３４とが円形状となり、この状態で半円凹部３２、３４内にピン３５が設けられている。そして、半円凹部３２、３４によって形成された円の直径とピン３５の直径とは等しい。また、取付部材３３の内側面には永久磁石１２が取り付けられている。そして、その他の構成は図１、図２に示した永久磁石埋め込みモータと同様の構成である。   FIG. 4 is a sectional view showing a part of another permanent magnet embedded motor according to the present invention, which is the same sectional view as FIG. As shown in the figure, a recess 31 is provided in the rotating shaft 7, and semicircular first semicircular recesses 32 are provided on both sides of the recess 31. Further, the cross-sectional outer shape of the rotary shaft 7 and the mounting member 33 in a portion where the mounting member 33 is mounted in a state where the mounting member 33 is mounted on the recess 31 and the mounting member 33 is mounted on the rotary shaft 7 is circular. In addition, a semicircular second semicircular recess 34 is provided on the side of the attachment member 33, and the semicircular recess 32 and the semicircular recess 34 are circular when the attachment member 33 is attached to the recess 31. In this state, pins 35 are provided in the semicircular recesses 32 and 34. The diameter of the circle formed by the semicircular recesses 32 and 34 is equal to the diameter of the pin 35. The permanent magnet 12 is attached to the inner surface of the attachment member 33. The other configuration is the same as that of the permanent magnet embedded motor shown in FIGS.

このような永久磁石埋め込みモータにおいては、回転軸７にロータが取り付けられていないから、構造が簡単であり、また回転軸７の内部にスリットを設ける必要がないから、製造が容易である。また、円形状となった半円凹部３２、３４内にピン３５が設けられているから、回転軸７が回転したときの遠心力によって取付部材３３が回転軸７から外れるのを確実に防止することができる。また、回転軸７に張出凹部を設ける必要がないから、製造が容易である。   In such a permanent magnet embedded motor, since the rotor is not attached to the rotating shaft 7, the structure is simple, and since it is not necessary to provide a slit in the rotating shaft 7, the manufacturing is easy. In addition, since the pins 35 are provided in the semicircular recesses 32 and 34 having a circular shape, it is possible to reliably prevent the mounting member 33 from being detached from the rotating shaft 7 by the centrifugal force when the rotating shaft 7 rotates. be able to. Moreover, since it is not necessary to provide an overhanging recessed part in the rotating shaft 7, manufacture is easy.

なお、上述実施の形態においては、回転軸７に矩形状の張出凹部９、三角状の張出凹部２２を設けたが、他の形状の張出凹部を設けてもよい。また、上述実施の形態においては、回転軸７に張出凹部９、２２を設け、また回転軸７、取付部材３３に半円凹部３２、３４を設け、半円凹部３２、３４内にピン３５を設けたが、回転軸の凹部に取付部材を接着により取り付けてもよく、この場合には製造が容易である。   In the above-described embodiment, the rectangular projecting recess 9 and the triangular projecting recess 22 are provided on the rotating shaft 7, but other shapes of projecting recesses may be provided. In the above-described embodiment, the projecting recesses 9 and 22 are provided on the rotating shaft 7, the semicircular recesses 32 and 34 are provided on the rotating shaft 7 and the mounting member 33, and the pins 35 are provided in the semicircular recesses 32 and 34. However, the attachment member may be attached to the concave portion of the rotating shaft by bonding, and in this case, the manufacture is easy.

本発明に係る永久磁石埋め込みモータを示す概略断面図である。It is a schematic sectional drawing which shows the permanent magnet embedded motor which concerns on this invention. 図１のＡ−Ａ拡大断面図である。It is an AA expanded sectional view of FIG. 本発明に係る他の永久磁石埋め込みモータの一部を示す断面図である。It is sectional drawing which shows a part of other permanent magnet embedded motor which concerns on this invention. 本発明に係る他の永久磁石埋め込みモータの一部を示す断面図である。It is sectional drawing which shows a part of other permanent magnet embedded motor which concerns on this invention.

符号の説明Explanation of symbols

１…ケーシング
２…ステータ
７…回転軸
８…凹部
９…張出凹部
１０…取付部材
１１…張出凸部
１２…永久磁石
２１…凹部
２２…張出凹部
２３…取付部材
２４…張出凸部
３１…凹部
３２…第１の半円凹部
３３…取付部材
３４…第２の半円凹部
３５…ピン DESCRIPTION OF SYMBOLS 1 ... Casing 2 ... Stator 7 ... Rotating shaft 8 ... Recessed part 9 ... Overhang recessed part 10 ... Mounting member 11 ... Overhang convex part 12 ... Permanent magnet 21 ... Recessed part 22 ... Overhang recessed part 23 ... Mounting member 24 ... Overhang convex part DESCRIPTION OF SYMBOLS 31 ... Recessed part 32 ... 1st semicircle recessed part 33 ... Mounting member 34 ... 2nd semicircle recessed part 35 ... Pin

Claims (4)

ケーシングに固定されたステータと、上記ケーシングに回転可能に支持された回転軸と、上記回転軸に取り付けられた取付部材と、取付部材の内側面に取り付けられた永久磁石とを具備することを特徴とする永久磁石埋め込みモータ。   A stator fixed to the casing; a rotating shaft rotatably supported by the casing; an attaching member attached to the rotating shaft; and a permanent magnet attached to an inner surface of the attaching member. And permanent magnet embedded motor. 上記回転軸に張出凹部を有する凹部を設け、上記取付部材に張出凸部を設け、上記凹部内に上記取付部材を取り付け、上記張出凹部に上記張出凸部係合したことを特徴とする請求項１に記載の永久磁石埋め込みモータ。   A concave portion having a protruding concave portion is provided on the rotating shaft, a protruding convex portion is provided on the mounting member, the mounting member is mounted in the concave portion, and the protruding convex portion is engaged with the protruding concave portion. The permanent magnet embedded motor according to claim 1. 上記回転軸に第１の半円凹部を有する凹部を設け、上記取付部材に第２の半円凹部を設け、上記凹部内に上記取付部材を取り付け、上記第１、第２の半円凹部内にピンを挿入したことを特徴とする請求項１に記載の永久磁石埋め込みモータ。   A recess having a first semicircular recess is provided on the rotating shaft, a second semicircular recess is provided on the mounting member, the mounting member is mounted in the recess, and in the first and second semicircular recesses The permanent magnet embedded motor according to claim 1, wherein a pin is inserted into the permanent magnet motor. 上記回転軸に凹部を設け、上記凹部内に上記取付部材を接着により取り付けたことを特徴とする請求項１に記載の永久磁石埋め込みモータ。   The permanent magnet embedded motor according to claim 1, wherein a concave portion is provided in the rotating shaft, and the attachment member is attached in the concave portion by adhesion.
JP2006337874A 2006-12-15 2006-12-15 Motor having embedded permanent magnet Pending JP2008154329A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012526513A (en) * 2009-05-07 2012-10-25 エービービー・オーワイ Structure for attaching magnet to rotor and rotor
WO2014064787A1 (en) * 2012-10-24 2014-05-01 三菱電機株式会社 Rotor for electric motor and electric motor
JPWO2015189938A1 (en) * 2014-06-11 2017-04-20 三菱電機株式会社 Permanent magnet embedded motor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012526513A (en) * 2009-05-07 2012-10-25 エービービー・オーワイ Structure for attaching magnet to rotor and rotor
WO2014064787A1 (en) * 2012-10-24 2014-05-01 三菱電機株式会社 Rotor for electric motor and electric motor
JPWO2014064787A1 (en) * 2012-10-24 2016-09-05 三菱電機株式会社 Electric motor rotor and electric motor
JPWO2015189938A1 (en) * 2014-06-11 2017-04-20 三菱電機株式会社 Permanent magnet embedded motor
US10348144B2 (en) 2014-06-11 2019-07-09 Mitsubishi Electric Corporation Permanent-magnet-embedded motor

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