JP3633272B2 - Reluctance motor stator and molding device - Google Patents

Reluctance motor stator and molding device Download PDF

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Publication number
JP3633272B2
JP3633272B2 JP08886398A JP8886398A JP3633272B2 JP 3633272 B2 JP3633272 B2 JP 3633272B2 JP 08886398 A JP08886398 A JP 08886398A JP 8886398 A JP8886398 A JP 8886398A JP 3633272 B2 JP3633272 B2 JP 3633272B2
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Japan
Prior art keywords
base material
stator
stator base
divided
axial direction
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JP08886398A
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Japanese (ja)
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JPH11289727A (en
Inventor
雅裕 塚本
匡之 初田
雅彦 勝
俊治 大木
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、リラクタンスモータの固定子と、電極単位毎の電極部材を形成する成形装置に関する。
【0002】
【従来の技術】
リラクタンスモータの固定子は、積層鉄心にコイルを卷回した突極がバックヨークから半径方向内方に向かって複数個突出され、内部に設けられる回転子を回転させるようになっているが、これら突極は、予め各電極単位で分割された状態で形成され、この突極となる積層鉄心にコイルを卷回した上で各突極を固定子の形状となるように組み立てるようにしている。
【0003】
このようにすれば、積層鉄心へのコイルの卷回作業を容易にするとができ、モータの製造効率も向上するとされている。
【0004】
なお、本明細書では、固定子のヨーク部と、当該ヨーク部から半径方向内方に向かって一体的に突出された突部とを有する部分を「電極部材」と総称する。
【0005】
【発明が解決しようとする課題】
しかしながら、このように突極となる各積層鉄心を、予め各電極単位で分割された状態で形成し、後にこれらを接合して固定子を形成する場合、形成された固定子の各突極とその内部に入る回転子と位置調整が難しいという問題がある。
【0006】
これは、固定子を形成する場合、各電極部材同士を接合して形成するために、各電極部材の大きさを同じにしても、この接合時に突極の位置ずれが生じることに起因している。
【0007】
このような突極の位置ずれは、例えば各突極と回転子とのエアギャップ間隔が各突極毎に異なるという問題を起こし、モータを回転させたときに、各突極ごとに回転子に対する吸引力または反発力に違いが生じ、回転子が振動したり、またモータ全体が振動するといった不具合が生じる。
【0008】
因みに、このエアギャップは、モータの大きさ(出力)にもよるが、全ての突極の位置が約0.2mm程度の誤差で一致している必要があり、したがって、分割された電極部材を接合して固定子を形成した場合には、このような僅かな誤差範囲内で形成すること自体が難しいものとなっている。
【0009】
本発明は、上記した従来技術のもつ課題を解決するためになされたもので、第1の目的は、複数の電極部材を結合して円筒状の固定子を形成する際に、複数の突極毎にずれが生じることがなく、モータの回転がスムーズで、振動が生じにくいリラクタンスモータの固定子を提供することにある。
【0010】
第2の目的は、円筒状に一体に形成した固定子母材を分割して複数の電極部材を形成するとき、好ましい破断面が生じるように成形できる成形装置を提供することを目的とする。
【0011】
【課題を解決するための手段】
本発明の目的は、下記する手段により達成される。
【0012】
(1) ヨーク部と、当該ヨーク部より半径方向内方に突出され突極を形成するための突部とを有する電極部材を、相互に複数結合して円筒状に配置してなるリラクタンスモータの固定子において、円筒状に一体に形成した固定子母材から前記各電極部材を形成するとき、当該固定子母材を軸方向に破断するようにしたことを特徴とするリラクタンスモータの固定子。
【0013】
(2) 前記固定子母材は、各電極部材毎に破断されるように、内周面又は外周面の少なくとも一方に軸方向に伸延する切欠部を有することを特徴とするリラタンスモータの固定子。
【0014】
(3) 前記切欠部は、各電極単位毎に分割する分割部材の刃部が最奥部まで達しないような形状としたことを特徴とするリラタンスモータの固定子。
【0015】
(4) ヨーク部と、当該ヨーク部より半径方向内方に突出され突極を形成するための突部とを有する電極部材を形成するための、円筒状に一体に形成された固定子母材を、分割部材により軸方向に分割し、前記複数の電極部材を成形するようにしたリラクタンスモータの固定子の成形装置において、前記分割部材は、前記円筒状の固定子母材の内部に挿入離脱可能に設けられた内部分割部材と、固定子母材の外部に設けられた外部分割部材とからなり、前記内部分割部材又は外部分割部材の少なくとも一方に、前記各電極部材毎に固定子母材を軸方向に破断する刃部を設け、前記内部分割部材と外部分割部材とを前記固定子母材の軸方向から近接離間し、当該固定子母材を前記刃部と他方の分割部材との間で挟圧し破断するようにしたことを特徴とするリラクタンスモータの固定子の成形装置。
【0016】
(5) ヨーク部と、当該ヨーク部より半径方向内方に突出され突極を形成するための突部とを有する電極部材を形成するための、円筒状に一体に形成された固定子母材を、分割部材により軸方向に分割し、前記複数の電極部材を成形するようにしたリラクタンスモータの固定子の成形装置において、前記分割部材は、前記固定子母材の両端面を軸方向から分割するように配置され、当該両分割部材の少なくとも一方に、前記各電極部材毎に固定子母材を軸方向に破断する刃部を設け、両分割部材を相対的に近接離間することにより固定子母材を軸方向から分割するようにしたことを特徴とするリラクタンスモータの固定子の成形装置。
【0017】
【発明の効果】
請求項1に記載の発明では、円筒状に一体に形成した固定子母材を、軸方向に分割して各電極部材を形成するとき、固定子母材を破断するようにしたので、この破断により分割された面は、いわばギザギザ状の細かな凹凸のある面となり、分割後の電極部材を結合するとき、破断面同士を合致させると、互いに確実に嵌り合い、分割前と同様の円筒状とすることができ、成形された固定子も、各電極間にずれが生じることがなくなり、モータに組み込んで使用した場合には回転が極めてスムーズとなり、発生する振動も極めて少ないものとなる。
【0018】
請求項2記載の発明では、固定子母材の分割開始点に軸方向に伸延する切欠部を設けたので、切欠部に分割部材を押し当てることにより、固定子母材を電極部材毎に確実に破断することができる。
【0019】
請求項3に記載の発明では、切欠部の形状を、分割部材の刃部が最奥部まで達しないような角度および深さとしたので、分割開始から固定子母材を確実に破断でき、また分割部材が固定子母材に当たって破損する等の不都合も防止できる。
請求項4に記載の発明では、固定子母材の内周面あるいは外周面の少なくとも一方の分割位置に分割部材の刃部が当接して、固定子母材を分割するとともに、固定子母材を内外両面から押さえ付けるので、固定子母材を容易に分割し、好ましい破断面が生じるように成形できる。特に、薄板を多数枚積層して形成した固定子母材を分割するときに使用して好ましい。
【0020】
請求項5に記載の発明では、固定子母材を端面から軸方向に押圧して分割するので、例えば、固定子母材を上下両面から押さえ付けて分割することができ、固定子母材を容易に分割し、好ましい破断面が生じるように成形できる。特に、一体成型された固定子母材を分割するときに使用して好ましい。
【0021】
【発明の実施の形態】
以下、図面に基づいて、本発明の実施の形態を説明する。
図1は本発明の実施の形態に係るリラクタンスモータの固定子を示す水平断面図、図2は同固定子の側面図、図3は同固定子の1つの電極部材を示す概略斜視図である。
【0022】
本実施形態に係るリラクタンスモータの固定子1は、図1に示すように、ヨーク部2aと、当該ヨーク部2aより半径方向内方に突出された突部2bとからなる電極部材2を複数個有し、各電極部材2の突部2bにそれぞれコイル3が卷回されると、前述の突極が形成され、各突部2bの先端部分により形成される内部空間内に設けられる回転子Rを回転し得るものとなる。
【0023】
各電極部材2は、図3に示すように、軸直角断面が略T字状をした部材であるが、特に、本実施形態では、予め円筒状に形成された固定子母材4を分割する場合に、分割面5がギザギザ状の細かな凹凸のある面となるように破断している。
そして、この分割面5を再度合体させることにより、各電極部材2を相互に連結し、固定子1としている。
【0024】
このようにギザギザ状の細かな凹凸を有する分割面5とすれば、綺麗に切断したもののとは異なり、図1,2に示すように、分割面全体が不規則な凹凸面となり、しかも各分割面5毎の凹凸状態もそれぞれ異なることになるので、これを再度合体させる場合には、当初破断された面同士しか一致せず、また一旦合致した後はシッカリと確実に連結されることになる。しかも、分割後に電極部材2を結合しても、分割前とほぼ同様の円筒状とすることができ、複数の電極部材2を結合させて固定子1を形成しても、各電極間にずれが生じることはなく、モータの回転がスムーズとなり、振動が生じる虞れも少ないものとなる。
【0025】
一般に、この固定子母材4としては、磁性鋼板が使用されているが、この磁性鋼板は、破断可能なものであり、しかも分割する場合に破断すれば、分割面5は微細な凹凸を有する面となる。
【0026】
したがって、薄板状の珪素鋼板を多数枚積層して固定子母材4を形成した場合も、また一体成型したものの場合も、破断することにより、分割面5は、微細な凹凸を有する面が形成することが可能となる。
【0027】
なお、前記分割面5を形成する位置は、各電極単位毎であればどのように位置であっても良く、必ずしも図1に示すような均等な位置である必要はない。
【0028】
次に、固定子母材4から電極部材2を成形する成形装置を説明する。
図4は本発明の第1の実施形態に係る成形装置の斜視図、図5は外側分割部材の平面図、図6は内側分割部材の底面図である。
【0029】
第1の実施形態に係る成形装置10は、薄板状の珪素鋼板を多数枚積層して形成した固定子母材4を分割するときに使用して好ましいもので、図4に示すように、固定子母材4を内部に収容して、固定子母材4の外周面に当接する外側分割部材11と、固定子母材4の内部に進入して、固定子母材4の内周面に当接する内側分割部材15とから構成されている。
【0030】
外側分割部材11は、図外の基台上に保持され、図4,5に示すように、円筒状の本体12の内周面から内側に向かって複数の支持部13が設けられたもので、この支持部13の先端が固定子母材4の外周面に当接し、後述の内側分割部材15により加圧力に対して固定子母材4を支持するようになっている。
【0031】
なお、前記実施形態では、支持部13の先端が、各電極部材2の分割破断位置のほぼ中間に当接するようになっているが、この支持部13の先端を尖らせて刃部を形成し、この刃部が各電極部材2の分割位置に当接するようにしてもよい。
【0032】
内側分割部材15は、図外の油圧装置等の駆動源により昇降可能とされ、図4,6に示すように、円盤状の本体16の下面から下方に向かって、分割破断位置に対応するように複数の破断片17が突設されたもので、各破断片17の外面側は先端が尖らされた刃部18が形成されている。
【0033】
この刃部18は、下端から上端に向かって次第に半径方向外方に位置するように形成され、刃部18の下端部分が、固定子母材4の分割位置の内周面に当接するように、刃部18の上端部分が、固定子母材4の分割破断位置の外周面よりも外側に位置するように構成されている。
【0034】
この成形装置10の作用を説明する。
まず、外側分割部材11内に固定子母材4を挿入し、支持部13の先端が各電極部材2の分割破断位置のほぼ中間に位置するようにする。
【0035】
次に、固定子母材4の上部から内側分割部材15の破断片17を挿入し、固定子母材4の内周面の分割位置に刃部18を当接し、内側分割部材15を押し下げる。
【0036】
この内側分割部材15の下降により、破断片17の刃部18は、固定子母材4を上部から分割する。
【0037】
この分割時において、固定子母材4は、内側分割部材15の刃部18により切断されるのではなく、割られることとなるので、その分割面は、ギザギザ状の細かな凹凸を有する面となる。
【0038】
したがって、分割後の電極部材2を再度合致させる場合には、分割面同士が確実に合致し、固定子母材4は分割前とほぼ同様の円筒状とすることができる。
【0039】
また、この分割は、各電極部材2毎に行なわれるが、その分割位置は、必ずしも一定とはならない。このため、一層分割後の電極部材2を再度合致させる場合には、分割面同士を間違いなく確実に合致させることができるという利点もある。
【0040】
しかし、この分割作業を流れ作業より画一的に行なう場合には、分割前の固定子母材4に、図7に示すような、分割開始用の目印となる点あるいは線、より好ましくは切欠部6を電極部材2の内周側又は外周側あるいは内外両側に設けることが好ましい。このようにすれば、固定子母材4の所定位置で電極部材毎に分割することができ、また分割面が好ましくない方向に伸びることによる好ましくない電極部材が生じることも防止できる。
【0041】
このような切欠部6を形成するに当たり、図7に示すように、破断片17の刃部18の先端が、切欠部6の最奥部まで達しないように、所定の角度若しくは幅を有するように形成することが好ましい。このような形状の切欠部6とすれば、分割開始から固定子母材4を確実に破断でき、また分割部材15が固定子母材4に当たって破損する等の不都合も防止できる。
【0042】
次に、本発明の第2の実施形態に係る成形装置について説明する。図8は本発明の第2の実施形態に係る成形装置の斜視図である。
前記第1の実施形態に係る成形装置10は、外側分割部材11に対して内側分割部材15を相対的に近接離間する作業を行なうことにより一度に固定子母材4を分割するようにしたものであるが、必ずしも1回の作業で行なう必要はなく、1つ1つ電極部材2を分割しても良い。
【0043】
第2の実施形態に係る成形装置10aも、薄板状の珪素鋼板を多数枚積層して形成した固定子母材4を分割するときに使用して好ましいもので、図8に示すように、電極部材2を個々的に分割する支持部13aと破断片17aを有している。
【0044】
この支持部13aは、固定子母材4の外方から、破断片17aは、固定子母材4の内方から固定子母材4を分割するようになっているが、支持部13aは、図外の油圧装置により駆動され、内部の破断片17aは、例えば、図外の油圧装置により駆動される楔状部材の楔効果を利用して半径方向に拡開縮小するように構成することが好ましい。
【0045】
これら支持部13aと破断片17aは、いずれも固定子母材4の長手方向に沿って刃部13b,17bが設けられ、両方が破断片となっているが、場合によっては、一方を破断機能のない支持部とし、他方を破断機能のある破断片としてもよい。
【0046】
この成形装置10aにより固定子母材4を電極部材毎に分割するには、固定子母材4の内周側および外周側にそれぞれ支持部13aと破断片17aを位置し、各支持部13aと破断片17aの刃部13b,17bをそれぞれ電極部材2の分割位置に当接させる。
【0047】
次に、各刃部13b,17bをそれぞれ固定子母材4に押しつけることにより、固定子母材4を内外両面から分割する。このときも、予め切欠部6を電極部材2の内外両側に設けると、固定子母材4の分割面が、前述した微細な凹凸を有する状の分割面となる。
【0048】
したがって、分割された電極部材2を再度結合する場合も、分割面同士を合致させて結合すれば、分割前とほぼ同様の円筒状とすることができる。
【0049】
さらに、本発明の第3の実施形態に係る成形装置について説明する。図9は本発明の第3の実施形態に係る成形装置の斜視図である。
前記第1,2の実施形態に係る成形装置10,10aは、珪素鋼板を多数枚積層して形成した固定子母材4に使用して好ましいものであるが、この第3の実施形態に係る成形装置10bは、珪素合金等により一体成型された固定子母材4に使用して好ましいものである。
【0050】
この成形装置10bは、環状の本体20a,20bの上面または下面から、分割位置に対向する複数の刃部21a,21bが突出された上下一対の破断片22a,22bから構成されている。これら破断片22a,22bは、一方を図外の基台上に固定し、他方を油圧装置等により昇降可能としているが、場合によっては、両者共に昇降可能としてもよい。
【0051】
この成形装置10bにより、固定子母材4を電極部材毎に分割するには、例えば、基台上に固定された破断片22b上に、固定子母材4を載置し、上方から破断片22aを下降し、各破断片22a,22bの刃部21a,21bを電極部材2の分割位置に当接させ、押圧すれば良い。
【0052】
このとき、固定子母材4は、各破断片22a,22bの刃部21a,21bにより割られることとなるので、前記同様の微細な凹凸を有するの分割面が形成され、再度結合時に、良好な結合ができ、分割前と同様の円筒状とすることができる。
【0053】
なお、本実施形態でも、固定子母材4は、上下面に切欠部6を設けることが好ましいが、場合によっては、電極部材2の内周側あるいは外周側にも切欠部6を設けてもよい。
【図面の簡単な説明】
【図1】本発明の一実施の形態に係る固定子を示す水平断面図である。
【図2】同固定子の側面図である。
【図3】同固定子の1つの電極部材を示す概略斜視図である。
【図4】本発明に係る成形装置の第1の実施形態を示す斜視図である。
【図5】同実施形態の外側分割部材の平面図である。
【図6】同実施形態の内側分割部材の底面図である。
【図7】固定子母材の要部を示す概略断面図である。
【図8】本発明に係る成形装置の第2の実施形態を示す斜視図である。
【図9】本発明に係る成形装置の第3の実施形態を示す斜視図である。
【符号の説明】
1…固定子、
2…電極部材、
2a…突部、
2b…ヨーク部、
4…固定子母材、
5…分割面、
6…切欠部、
10,10a,10b…成形装置、
11…外側分割部材、
15…内側分割部材、
13b,17b,18,21a,21b…刃部。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reluctance motor stator and a molding apparatus for forming an electrode member for each electrode unit.
[0002]
[Prior art]
The stator of a reluctance motor has a plurality of salient poles, which are wound around a laminated iron core, projecting radially inward from the back yoke to rotate the rotor provided inside. The salient poles are formed in advance in a state of being divided in units of electrodes, and after winding a coil around the laminated iron core that becomes the salient poles, the salient poles are assembled so as to have a stator shape.
[0003]
If it does in this way, the coil winding operation | work to a laminated iron core can be made easy, and it is supposed that the manufacturing efficiency of a motor will also improve.
[0004]
In this specification, a portion having a yoke portion of the stator and a protrusion integrally protruding radially inward from the yoke portion is collectively referred to as an “electrode member”.
[0005]
[Problems to be solved by the invention]
However, when each laminated iron core to be a salient pole is formed in a state where it is divided in advance in units of electrodes, and these are joined later to form a stator, each salient pole of the formed stator and There is a problem that it is difficult to adjust the position of the rotor inside.
[0006]
This is because when the stator is formed, the electrode members are joined to each other, so that even if the size of each electrode member is the same, the position of the salient pole is shifted at the time of joining. Yes.
[0007]
Such a positional deviation of the salient poles causes, for example, a problem that an air gap interval between each salient pole and the rotor is different for each salient pole. When the motor is rotated, each salient pole has a problem with respect to the rotor. A difference occurs in the attractive force or the repulsive force, causing problems such as vibration of the rotor and vibration of the entire motor.
[0008]
Incidentally, although this air gap depends on the size (output) of the motor, it is necessary that the positions of all the salient poles coincide with each other with an error of about 0.2 mm. When a stator is formed by joining, it is difficult to form the stator within such a small error range.
[0009]
The present invention has been made to solve the above-described problems of the prior art, and a first object is to provide a plurality of salient poles when a plurality of electrode members are combined to form a cylindrical stator. It is an object of the present invention to provide a stator for a reluctance motor that does not cause a shift every time, that the motor rotates smoothly and is less likely to generate vibration.
[0010]
The second object is to provide a molding apparatus that can be molded so as to produce a preferable fracture surface when a plurality of electrode members are formed by dividing a stator base material integrally formed in a cylindrical shape.
[0011]
[Means for Solving the Problems]
The object of the present invention is achieved by the following means.
[0012]
(1) A reluctance motor in which a plurality of electrode members each having a yoke portion and a protruding portion that protrudes radially inward from the yoke portion to form a salient pole are coupled to each other and arranged in a cylindrical shape. A stator of a reluctance motor characterized in that, in the stator, when each electrode member is formed from a stator base material integrally formed in a cylindrical shape, the stator base material is broken in the axial direction.
[0013]
(2) The stator base material has a notch portion extending in the axial direction on at least one of the inner peripheral surface and the outer peripheral surface so as to be broken for each electrode member, and fixing the reluctance motor Child.
[0014]
(3) The stator of the reluctance motor, wherein the cutout portion has a shape such that the blade portion of the divided member divided for each electrode unit does not reach the innermost portion.
[0015]
(4) Stator base material integrally formed in a cylindrical shape for forming an electrode member having a yoke portion and a protruding portion that protrudes radially inward from the yoke portion to form a salient pole. In the reluctance motor stator forming apparatus, the split member is inserted into and detached from the cylindrical stator base material by splitting the plurality of electrode members in the axial direction by a split member. An inner divided member provided externally and an outer divided member provided outside the stator base material, and at least one of the inner divided member and the outer divided member, the stator base material for each electrode member A blade portion that breaks in the axial direction, the inner divided member and the outer divided member are closely spaced from the axial direction of the stator base material, and the stator base material is separated from the blade portion and the other divided member. To be crushed by pinching between them A reluctance motor stator forming device.
[0016]
(5) Stator base material integrally formed in a cylindrical shape for forming an electrode member having a yoke portion and a protruding portion that protrudes radially inward from the yoke portion to form a salient pole. In the reluctance motor stator forming apparatus, the split member splits both ends of the stator base material from the axial direction. The stator is provided by providing at least one of the divided members with a blade portion for breaking the stator base material in the axial direction for each of the electrode members, and relatively separating and separating the divided members. An apparatus for molding a stator of a reluctance motor, wherein a base material is divided from an axial direction.
[0017]
【The invention's effect】
In the first aspect of the invention, when the stator base material formed integrally in a cylindrical shape is divided in the axial direction to form each electrode member, the stator base material is broken. The surface divided by the above becomes a surface with fine irregularities in a so-called jagged shape, and when joining the divided electrode members, if the fractured surfaces match each other, it fits securely and the same cylindrical shape as before the division The molded stator can be prevented from being displaced between the electrodes. When the stator is incorporated in a motor, the rotation becomes extremely smooth, and the generated vibration is extremely small.
[0018]
According to the second aspect of the present invention, since the notch portion extending in the axial direction is provided at the division starting point of the stator base material, the stator base material can be reliably secured to each electrode member by pressing the split member against the notch portion. Can be broken.
[0019]
In the invention according to claim 3, since the shape of the notch portion is set to an angle and a depth so that the blade portion of the dividing member does not reach the innermost portion, the stator base material can be reliably broken from the start of the division, and Inconveniences such as breakage of the divided member against the stator base material can also be prevented.
In the invention according to claim 4, the blade portion of the dividing member is brought into contact with at least one division position of the inner peripheral surface or the outer peripheral surface of the stator base material to divide the stator base material, and the stator base material Is pressed from both the inside and outside surfaces, so that the stator base material can be easily divided and molded so as to have a preferable fracture surface. In particular, it is preferably used when a stator base material formed by laminating a large number of thin plates is divided.
[0020]
In the invention according to claim 5, since the stator base material is pressed and divided in the axial direction from the end face, for example, the stator base material can be pressed and divided from both the upper and lower surfaces, and the stator base material can be divided. It can be easily divided and molded to produce a preferred fracture surface. In particular, it is preferable to use when dividing the integrally formed stator base material.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 is a horizontal sectional view showing a stator of a reluctance motor according to an embodiment of the present invention, FIG. 2 is a side view of the stator, and FIG. 3 is a schematic perspective view showing one electrode member of the stator. .
[0022]
As shown in FIG. 1, the stator 1 of the reluctance motor according to the present embodiment includes a plurality of electrode members 2 each having a yoke portion 2a and a protrusion 2b protruding inward in the radial direction from the yoke portion 2a. And when the coils 3 are wound around the protrusions 2b of the respective electrode members 2, the aforementioned salient poles are formed, and the rotor R provided in the internal space formed by the tip portion of each of the protrusions 2b. Can be rotated.
[0023]
As shown in FIG. 3, each electrode member 2 is a member having a substantially T-shaped cross section perpendicular to the axis. In particular, in this embodiment, the stator base material 4 formed in a cylindrical shape in advance is divided. In some cases, the dividing surface 5 is broken so as to be a surface with fine irregularities having a jagged shape.
Then, the divided surfaces 5 are united again to connect the electrode members 2 to each other, thereby forming the stator 1.
[0024]
As shown in FIGS. 1 and 2, if the dividing surface 5 has fine jagged irregularities as shown in FIGS. 1 and 2, the entire dividing surface becomes an irregular irregular surface, and each division surface is divided. Since the concavo-convex state for each surface 5 is also different, when reuniting these, only the surfaces that were originally fractured match each other, and once matched, they will be securely connected to each other. . In addition, even if the electrode members 2 are joined after the division, they can be formed in the same cylindrical shape as before the division, and even if the plurality of electrode members 2 are joined to form the stator 1, they are displaced between the electrodes. The motor rotates smoothly and there is little risk of vibration.
[0025]
In general, a magnetic steel plate is used as the stator base material 4, but this magnetic steel plate can be broken, and if it is broken when divided, the dividing surface 5 has fine irregularities. It becomes a surface.
[0026]
Therefore, both the case where the stator base material 4 is formed by laminating a large number of thin silicon steel plates, and the case where the stator base material 4 is integrally formed, are broken so that the split surface 5 is formed with a surface having fine irregularities. It becomes possible to do.
[0027]
Note that the position where the dividing surface 5 is formed may be any position as long as it is for each electrode unit, and is not necessarily an equivalent position as shown in FIG.
[0028]
Next, a forming apparatus for forming the electrode member 2 from the stator base material 4 will be described.
4 is a perspective view of the molding apparatus according to the first embodiment of the present invention, FIG. 5 is a plan view of the outer divided member, and FIG. 6 is a bottom view of the inner divided member.
[0029]
The forming apparatus 10 according to the first embodiment is preferable for use when dividing a stator base material 4 formed by laminating a large number of thin silicon steel plates. As shown in FIG. The child base material 4 is housed inside, the outer divided member 11 contacting the outer peripheral surface of the stator base material 4, and the stator base material 4 is entered into the inner peripheral surface of the stator base material 4. It is comprised from the inner side division member 15 which contact | abuts.
[0030]
The outer divided member 11 is held on a base outside the figure, and is provided with a plurality of support portions 13 from the inner peripheral surface of the cylindrical main body 12 toward the inner side as shown in FIGS. The tip of the support portion 13 abuts on the outer peripheral surface of the stator base material 4, and the stator base material 4 is supported against the applied pressure by an inner divided member 15 described later.
[0031]
In the above-described embodiment, the tip of the support portion 13 is in contact with the middle of the split fracture position of each electrode member 2, but the tip of the support portion 13 is sharpened to form a blade portion. The blade portion may be in contact with the division position of each electrode member 2.
[0032]
The inner split member 15 can be moved up and down by a drive source such as a hydraulic device (not shown), and corresponds to the split fracture position downward from the lower surface of the disk-shaped body 16 as shown in FIGS. A plurality of broken pieces 17 project from each other, and a blade portion 18 having a sharp tip is formed on the outer surface side of each broken piece 17.
[0033]
The blade portion 18 is formed so as to be gradually located radially outward from the lower end toward the upper end, and the lower end portion of the blade portion 18 is in contact with the inner peripheral surface of the divided position of the stator base material 4. The upper end portion of the blade portion 18 is configured to be located outside the outer peripheral surface of the split fracture position of the stator base material 4.
[0034]
The operation of the molding apparatus 10 will be described.
First, the stator base material 4 is inserted into the outer divided member 11 so that the front end of the support portion 13 is positioned approximately in the middle of the divided fracture position of each electrode member 2.
[0035]
Next, the fracture piece 17 of the inner split member 15 is inserted from the upper part of the stator base material 4, the blade portion 18 is brought into contact with the split position on the inner peripheral surface of the stator base material 4, and the inner split member 15 is pushed down.
[0036]
As the inner dividing member 15 is lowered, the blade portion 18 of the broken piece 17 divides the stator base material 4 from above.
[0037]
At the time of the division, the stator base material 4 is not cut by the blade portion 18 of the inner division member 15, but is to be broken. Therefore, the division surface is a surface having fine jagged irregularities. Become.
[0038]
Therefore, when the electrode member 2 after the division is matched again, the divided surfaces are surely matched, and the stator base material 4 can be formed in the same cylindrical shape as that before the division.
[0039]
This division is performed for each electrode member 2, but the division position is not necessarily constant. For this reason, when the electrode member 2 after one layer division is matched again, there is also an advantage that the divided surfaces can be surely matched with each other.
[0040]
However, when this division work is performed more uniformly than the flow work, the stator base material 4 before the division is provided with a point or line as a mark for starting division as shown in FIG. 7, more preferably a notch. It is preferable to provide the part 6 on the inner peripheral side, the outer peripheral side or both the inner and outer sides of the electrode member 2. If it does in this way, it can divide | segment for every electrode member in the predetermined position of the stator base material 4, and it can also prevent that the undesirable electrode member by the division | segmentation surface extending in an unpreferable direction arises.
[0041]
In forming such a cutout portion 6, as shown in FIG. 7, the tip end of the blade portion 18 of the broken piece 17 has a predetermined angle or width so as not to reach the innermost portion of the cutout portion 6. It is preferable to form. If the cutout portion 6 having such a shape is used, the stator base material 4 can be reliably broken from the start of splitting, and inconveniences such as breakage of the split member 15 against the stator base material 4 can be prevented.
[0042]
Next, the shaping | molding apparatus which concerns on the 2nd Embodiment of this invention is demonstrated. FIG. 8 is a perspective view of a molding apparatus according to the second embodiment of the present invention.
In the molding apparatus 10 according to the first embodiment, the stator base material 4 is divided at a time by performing an operation of moving the inner division member 15 relatively close to and away from the outer division member 11. However, it is not always necessary to carry out by one operation, and the electrode members 2 may be divided one by one.
[0043]
The forming apparatus 10a according to the second embodiment is also preferably used when dividing the stator base material 4 formed by laminating a large number of thin silicon steel plates. As shown in FIG. It has the support part 13a and the broken piece 17a which divide | segment the member 2 individually.
[0044]
The support portion 13a is configured to divide the stator base material 4 from the outside of the stator base material 4 and the broken piece 17a from the inside of the stator base material 4. It is preferable that the internal fracture piece 17a is driven by a hydraulic device (not shown) and is configured to expand and contract in the radial direction by using, for example, a wedge effect of a wedge-shaped member driven by the hydraulic device (not shown). .
[0045]
Both of the support portion 13a and the broken piece 17a are provided with blade portions 13b and 17b along the longitudinal direction of the stator base material 4, and both are broken pieces. It is good also as a support part without a crack, and making the other into a fracture piece with a fracture function.
[0046]
In order to divide the stator base material 4 for each electrode member by the molding apparatus 10a, the support portion 13a and the fracture piece 17a are positioned on the inner peripheral side and the outer peripheral side of the stator base material 4, respectively. The blade portions 13b and 17b of the broken piece 17a are brought into contact with the divided positions of the electrode member 2, respectively.
[0047]
Next, the stator base material 4 is divided from both the inner and outer surfaces by pressing the blade portions 13b and 17b against the stator base material 4, respectively. Also at this time, if the notches 6 are provided in advance on both the inside and outside of the electrode member 2, the dividing surface of the stator base material 4 becomes the dividing surface having the fine irregularities described above.
[0048]
Therefore, when the divided electrode members 2 are coupled again, if the divided surfaces are matched and coupled, the cylindrical shape can be made substantially the same as before the division.
[0049]
Furthermore, the shaping | molding apparatus which concerns on the 3rd Embodiment of this invention is demonstrated. FIG. 9 is a perspective view of a molding apparatus according to the third embodiment of the present invention.
The forming apparatuses 10 and 10a according to the first and second embodiments are preferable for use in the stator base material 4 formed by laminating a large number of silicon steel plates, but according to the third embodiment. The forming apparatus 10b is preferable for use in the stator base material 4 integrally formed of a silicon alloy or the like.
[0050]
This forming apparatus 10b is composed of a pair of upper and lower broken pieces 22a and 22b in which a plurality of blade portions 21a and 21b facing the division positions are projected from the upper or lower surfaces of the annular main bodies 20a and 20b. One of these broken pieces 22a and 22b is fixed on a base (not shown), and the other can be moved up and down by a hydraulic device or the like.
[0051]
In order to divide the stator base material 4 for each electrode member by the molding apparatus 10b, for example, the stator base material 4 is placed on the fracture piece 22b fixed on the base, and the fracture piece is viewed from above. What is necessary is just to descend | fall 22a and to contact | abut the blade part 21a, 21b of each broken piece 22a, 22b to the division position of the electrode member 2, and to press.
[0052]
At this time, since the stator base material 4 is split by the blade portions 21a and 21b of the broken pieces 22a and 22b, a split surface having the same fine irregularities as described above is formed, and it is good at the time of joining again. Can be combined, and can have the same cylindrical shape as before the division.
[0053]
In this embodiment as well, the stator base material 4 is preferably provided with notches 6 on the upper and lower surfaces, but depending on the case, the notches 6 may also be provided on the inner peripheral side or the outer peripheral side of the electrode member 2. Good.
[Brief description of the drawings]
FIG. 1 is a horizontal sectional view showing a stator according to an embodiment of the present invention.
FIG. 2 is a side view of the stator.
FIG. 3 is a schematic perspective view showing one electrode member of the stator.
FIG. 4 is a perspective view showing a first embodiment of a molding apparatus according to the present invention.
FIG. 5 is a plan view of an outer divided member according to the embodiment.
FIG. 6 is a bottom view of the inner divided member of the embodiment.
FIG. 7 is a schematic cross-sectional view showing a main part of a stator base material.
FIG. 8 is a perspective view showing a second embodiment of the molding apparatus according to the present invention.
FIG. 9 is a perspective view showing a third embodiment of the molding apparatus according to the present invention.
[Explanation of symbols]
1 ... Stator,
2 ... Electrode member,
2a ... projection,
2b ... Yoke part,
4 ... Stator base material,
5: Dividing surface,
6 ... Notch,
10, 10a, 10b ... molding apparatus,
11 ... outer divided member,
15 ... inner division member,
13b, 17b, 18, 21a, 21b... Blade part.

Claims (5)

ヨーク部と、当該ヨーク部より半径方向内方に突出され突極を形成するための突部とを有する電極部材を、相互に複数結合して円筒状に配置してなるリラクタンスモータの固定子において、
円筒状に一体に形成した固定子母材から前記各電極部材を形成するとき、当該固定子母材を軸方向に破断するようにしたことを特徴とするリラクタンスモータの固定子。
In a stator of a reluctance motor in which a plurality of electrode members each having a yoke portion and a protruding portion that protrudes radially inward from the yoke portion to form a salient pole are coupled to each other and arranged in a cylindrical shape. ,
A stator of a reluctance motor, wherein when forming each electrode member from a stator base material integrally formed in a cylindrical shape, the stator base material is broken in the axial direction.
前記固定子母材は、各電極部材毎に破断されるように、内周面又は外周面の少なくとも一方に軸方向に伸延する切欠部を有することを特徴とする請求項1に記載のリラタンスモータの固定子。2. The relatance according to claim 1, wherein the stator base material has a notch extending in an axial direction on at least one of an inner peripheral surface and an outer peripheral surface so as to be broken for each electrode member. Motor stator. 前記切欠部は、前記固定子母材を破断する分割部材の刃部が最奥部まで達しないような形状としたことを特徴とする請求項2に記載のリラタンスモータの固定子。The stator of the reluctance motor according to claim 2, wherein the notch portion has a shape such that a blade portion of a split member that breaks the stator base material does not reach the innermost portion. ヨーク部と、当該ヨーク部より半径方向内方に突出され突極を形成するための突部とを有する電極部材を形成するための、円筒状に一体に形成された固定子母材を、分割部材により軸方向に分割し、前記複数の電極部材を成形するようにしたリラクタンスモータの固定子の成形装置において、
前記分割部材は、前記円筒状の固定子母材の内部に挿入離脱可能に設けられた内部分割部材と、固定子母材の外部に設けられた外部分割部材とからなり、前記内部分割部材又は外部分割部材の少なくとも一方に、前記各電極部材毎に固定子母材を軸方向に破断する刃部を設け、前記内部分割部材と外部分割部材とを前記固定子母材の軸方向から近接離間し、当該固定子母材を前記刃部と他方の分割部材との間で挟圧し破断するようにしたことを特徴とするリラクタンスモータの固定子の成形装置。
A stator base material integrally formed in a cylindrical shape is divided to form an electrode member having a yoke portion and a protruding portion that protrudes radially inward from the yoke portion to form a salient pole. In the reluctance motor stator forming apparatus, in which the plurality of electrode members are formed by dividing in the axial direction by a member,
The split member includes an internal split member provided in an insertable / removable manner inside the cylindrical stator base material, and an external split member provided outside the stator base material, and the internal split member or At least one of the outer divided members is provided with a blade portion for breaking the stator base material in the axial direction for each of the electrode members, and the inner divided member and the outer divided member are closely spaced from the axial direction of the stator base material. A stator forming apparatus for a reluctance motor, wherein the stator base material is sandwiched between the blade portion and the other divided member to be broken.
ヨーク部と、当該ヨーク部より半径方向内方に突出され突極を形成するための突部とを有する電極部材を形成するための、円筒状に一体に形成された固定子母材を、分割部材により軸方向に分割し、前記複数の電極部材を成形するようにしたリラクタンスモータの固定子の成形装置において、
前記分割部材は、前記固定子母材の両端面を軸方向から分割するように配置され、当該両分割部材の少なくとも一方に、前記各電極部材毎に固定子母材を軸方向に破断する刃部を設け、両分割部材を相対的に近接離間することにより固定子母材を軸方向から分割するようにしたことを特徴とするリラクタンスモータの固定子の成形装置。
A stator base material integrally formed in a cylindrical shape is divided to form an electrode member having a yoke portion and a protruding portion that protrudes radially inward from the yoke portion to form a salient pole. In the reluctance motor stator forming apparatus, in which the plurality of electrode members are formed by dividing in the axial direction by a member,
The split member is arranged so as to split both end surfaces of the stator base material from the axial direction, and at least one of the split members is a blade for breaking the stator base material in the axial direction for each of the electrode members A stator forming apparatus for a reluctance motor, wherein a stator base material is divided from an axial direction by providing a portion and relatively separating and separating both divided members.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10367398B2 (en) 2014-04-02 2019-07-30 Ihi Corporation Double-stator switched reluctance rotating machine
US10637305B2 (en) 2014-10-17 2020-04-28 Ihi Corporation Double stator-type rotary machine

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US6700284B2 (en) * 2001-03-26 2004-03-02 Emerson Electric Co. Fan assembly including a segmented stator switched reluctance fan motor
US6844653B2 (en) * 2003-03-31 2005-01-18 Valeo Electrical Systems, Inc. Stator design for permanent magnet motor with combination slot wedge and tooth locator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10367398B2 (en) 2014-04-02 2019-07-30 Ihi Corporation Double-stator switched reluctance rotating machine
US10637305B2 (en) 2014-10-17 2020-04-28 Ihi Corporation Double stator-type rotary machine

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