JPH09233742A - Stator core - Google Patents
Stator coreInfo
- Publication number
- JPH09233742A JPH09233742A JP3517196A JP3517196A JPH09233742A JP H09233742 A JPH09233742 A JP H09233742A JP 3517196 A JP3517196 A JP 3517196A JP 3517196 A JP3517196 A JP 3517196A JP H09233742 A JPH09233742 A JP H09233742A
- Authority
- JP
- Japan
- Prior art keywords
- groove
- straight
- diameter side
- protrusion
- projection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
(57)【要約】
【課題】 各分割コア１のヨーク部２の一端の突起６を
周方向に隣接する各分割コアのヨーク部の他端の凹溝７
に嵌合して組立てられるステータコアにおいて、分割コ
ア間のガタ付きを生じないようにする。
【解決手段】 突起６と凹溝７の中間部分に、ヨーク部
２の各端面の法線方向に一定幅で延在するストレート部
６ａ，７ａを形成すると共に、ストレート部のヨーク部
端面寄りの部分に隣接させてストレート部より若干幅狭
の縊れ部６ｃ，７ｃを形成する。突起６を凹溝７に前記
法線方向から圧入する際、凹溝７の外径側と内径側の溝
壁２ａ，２ｂが弾性域内で撓み、圧入完了状態で突起６
のストレート部６ａと縊れ部６ｃとが凹溝７のストレー
ト部７ａと縊れ部７ｂとにおいて弾性的に締め付けられ
るようにする。
PROBLEM TO BE SOLVED: To provide a concave groove 7 at the other end of the yoke part of each divided core with a projection 6 at one end of a yoke part 2 of each divided core 1 circumferentially adjacent thereto.
In the stator core that is assembled by fitting into the core, play is prevented from occurring between the divided cores. SOLUTION: Straight portions 6a, 7a extending at a constant width in a direction normal to each end face of a yoke portion 2 are formed at an intermediate portion between a projection 6 and a concave groove 7, and the straight portion is located near the end face of the yoke portion. Narrow portions 6c, 7c slightly narrower than the straight portion are formed adjacent to the portion. When the projection 6 is press-fitted into the groove 7 from the normal direction, the groove walls 2a and 2b on the outer diameter side and the inner diameter side of the groove 7 are bent in the elastic region, and the projection 6 is pressed in a state where the press-fitting is completed.
The straight portion 6a and the twisted portion 6c are elastically tightened at the straight portion 7a and the twisted portion 7b of the groove 7.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電動モータ等の回
転電機に用いられるステータコアに関する。The present invention relates to a stator core used for a rotating electric machine such as an electric motor.
【０００２】[0002]
【従来の技術】従来、特開昭61-124241号公報に見られ
るように、周方向に分割された各分割コアのヨーク部の
周方向一端と他端とに夫々突起と凹溝とを形成し、複数
の分割コアを、隣接する一方の分割コアの突起を他方の
分割コアの凹溝に嵌合させることにより、周方向に連結
して組立てたステータコアは知られている。そして、こ
のものでは、凹溝をあり溝で形成し、あり形に形成した
突起をステータコアの軸方向から凹溝に嵌合している。2. Description of the Related Art Conventionally, as shown in JP-A-61-124241, a projection and a concave groove are formed at one end and the other end in the circumferential direction of a yoke portion of each divided core divided in a circumferential direction. A stator core is known in which a plurality of split cores are circumferentially connected and assembled by fitting projections of one adjacent split core into concave grooves of the other split core. In this case, the concave groove is formed by a dovetail groove, and the protrusion formed in the dovetail shape is fitted into the concave groove from the axial direction of the stator core.
【０００３】[0003]
【発明が解決しようとする課題】ステータコアは軸長が
比較的長いため、突起を凹溝に軸方向から嵌合する上記
従来例のものでは圧入ストロークが長くなり、圧入負荷
が過大にならないよう、突起と凹溝との間の締め代を小
さくせざるを得ず、その結果、分割コア間のガタを生じ
易くなる。本発明は、かかる不具合を解消したステータ
コアを提供することを課題としている。Since the stator core has a relatively long shaft length, the above-mentioned prior art in which the projection is fitted into the concave groove from the axial direction has a long press-fit stroke and prevents the press-fit load from becoming excessive. The interference between the projection and the groove must be reduced, and as a result, play between split cores is likely to occur. An object of the present invention is to provide a stator core that has solved such a problem.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決すべく、
本発明は、周方向に分割された各分割コアのヨーク部の
周方向一端と他端とに夫々突起と凹溝とを形成し、複数
の分割コアを、隣接する一方の分割コアの突起を他方の
分割コアの凹溝に嵌合させることにより、周方向に連結
して組立てられるステータコアにおいて、突起と凹溝と
の中間部分に、ヨーク部の各端面の法線方向に一定幅で
真直に延在するストレート部を形成し、突起の先端部と
凹溝の内底部とをストレート部の幅と同一の直径の半円
状に形成すると共に、突起と凹溝のヨーク部の各端面寄
りの部分に、ストレート部に隣接する、ストレート部よ
り幅狭の縊れ部と、縊れ部からヨーク部の各端面に向か
って拡幅する拡幅部とを形成し、突起を前記法線方向か
ら凹溝に圧入する際に、凹溝の外径側と内径側の溝壁の
弾性域内での撓みにより凹溝の縊れ部が突起のストレー
ト部の通過を許容するように拡幅され、突起のストレー
ト部が凹溝の縊れ部を通過したとき、凹溝のストレート
部と縊れ部とが夫々突起のストレート部と縊れ部とに圧
接するようにした、ことを特徴とする。Means for Solving the Problems In order to solve the above problems,
According to the present invention, a protrusion and a concave groove are formed respectively at one end and the other end in the circumferential direction of the yoke portion of each of the divided cores divided in the circumferential direction, and a plurality of divided cores are formed so that the protrusions of one adjacent divided core are formed. In the stator core that is assembled by being connected in the circumferential direction by being fitted in the concave groove of the other split core, the stator core is straightened to the intermediate portion between the protrusion and the concave groove with a constant width in the normal direction of each end surface of the yoke portion. The extending straight portion is formed, the tip of the protrusion and the inner bottom of the groove are formed in a semicircular shape having the same diameter as the width of the straight portion, and the protrusion and the groove are located closer to each end surface of the yoke portion. In the portion, a twisted portion that is adjacent to the straight portion and has a width narrower than that of the straight portion, and a widened portion that widens from the twisted portion toward each end surface of the yoke portion are formed, and the protrusion is recessed from the normal direction. Bending of the groove walls on the outer diameter side and inner diameter side of the groove when it is pressed into When the ridged portion of the concave groove is widened so as to allow passage of the straight portion of the protrusion, and when the straight portion of the protrusion passes the ridged portion of the concave groove, the straight portion and the ridged portion of the concave groove are respectively It is characterized in that the protrusion is adapted to come into pressure contact with the straight portion and the twisted portion.
【０００５】本発明によれば、周方向に隣接する一方の
分割コアの突起を他方の分割コアの凹溝にヨーク部の端
面の法線方向、即ち、周方向から圧入可能となり、圧入
ストロークは突起を凹溝に軸方向から圧入する場合に比
し極めて短くなる。そのため、突起と凹溝との間の締め
代を比較的大きく取っても、圧入負荷が過大になること
はない。また、ストレート部の存在により突起と凹溝と
の嵌合部を支点にした分割コアの傾動が防止され、締め
代を充分に確保できることと相俟って、分割コア間のガ
タを確実に防止でき、高品質のステータコアを得られ
る。According to the present invention, the protrusion of one of the divided cores adjacent in the circumferential direction can be press-fitted into the concave groove of the other split core in the direction normal to the end face of the yoke portion, that is, in the circumferential direction. The length is extremely short as compared with the case where the projection is press-fitted into the concave groove from the axial direction. Therefore, even if the interference between the projection and the groove is relatively large, the press-fitting load does not become excessive. In addition, the presence of the straight portion prevents tilting of the split core with the fulcrum of the fitting portion between the protrusion and the concave groove, and in addition to securing a sufficient interference, securely prevents backlash between the split cores. And a high quality stator core can be obtained.
【０００６】ところで、凹溝を、そのストレート部の幅
方向の中心線がヨーク部の周方向他端面の幅方向中心を
通る法線に合致するように形成すると、凹溝の外径側の
溝壁が凹溝の内径側の溝壁よりも薄くなり、外径側の溝
壁の曲げ剛性が内径側の溝壁の曲げ剛性より低くなっ
て、突起を凹溝に圧入したとき外径側の溝壁のみが撓
み、隣接する分割コア間に径方向の段差が発生してしま
う。そのため、凹溝を、ストレート部の幅方向の中心線
がヨーク部の周方向他端面の幅方向中心を通る法線に対
し内径側にオフセットされるように形成して、凹溝の外
径側の溝壁の曲げ剛性と内径側の溝壁の曲げ剛性とが等
しくなるようにし、段差の発生を防止することが望まし
い。When the groove is formed so that the center line in the width direction of the straight portion coincides with the normal passing through the center in the width direction of the other circumferential end surface of the yoke portion, the groove on the outer diameter side of the groove is formed. The wall becomes thinner than the groove wall on the inner diameter side of the concave groove, and the bending rigidity of the groove wall on the outer diameter side becomes lower than the bending rigidity of the groove wall on the inner diameter side. Only the groove wall is bent, and a step in the radial direction is generated between adjacent divided cores. Therefore, the groove is formed so that the center line in the width direction of the straight portion is offset toward the inner diameter side with respect to the normal line passing through the center in the width direction of the other end surface in the circumferential direction of the yoke portion. It is desirable to make the bending rigidity of the groove wall and the bending rigidity of the groove wall on the inner diameter side equal to each other to prevent the occurrence of a step.
【０００７】また、突起と凹溝との縊れ部間における前
記法線方向の締め代が確保されるように、突起のストレ
ート部の長さを凹溝のストレート部の長さより若干長く
しておけば、突起と凹溝の縊れ部間における前記法線方
向の締め代を確保して、分割コア間の周方向の遊びを完
全に除去でき、有利である。Further, the length of the straight portion of the protrusion is set to be slightly longer than the length of the straight portion of the concave groove so as to secure a tightening margin in the normal direction between the twisted portions of the protrusion and the concave groove. This is advantageous because it is possible to secure the interference in the normal direction between the protrusions and the grooved portion of the concave groove and completely eliminate the circumferential play between the split cores.
【０００８】[0008]
【発明の実施の形態】図１を参照して、１はステータコ
アの構成単位となる分割コアを示し、帯状鋼板から打抜
いた打抜き片の多数枚を積層して構成されている。分割
コア１は、円弧状のヨーク部２と、ヨーク部２の中央か
ら径方向内方にのびるポール部３と、ポール部３の径方
向内端の歯部４とを備えている。ポール部３にはボビン
５ａを介してステータコイル５が巻回されるようになっ
ており、該コイル５の端面に沿うように、ヨーク部２の
径方向内側面はポール部３に直交する平坦面に形成され
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, reference numeral 1 denotes a split core as a structural unit of a stator core, which is formed by stacking a large number of punched pieces punched from a strip-shaped steel plate. The split core 1 includes an arc-shaped yoke portion 2, a pole portion 3 extending radially inward from the center of the yoke portion 2, and a tooth portion 4 at the radially inner end of the pole portion 3. The stator coil 5 is wound around the pole portion 3 via a bobbin 5a, and the radially inner side surface of the yoke portion 2 is flat so as to be orthogonal to the pole portion 3 so as to extend along the end surface of the coil 5. Formed on the surface.
【０００９】ヨーク部２の周方向一端と他端とには夫々
突起６と凹溝７とが形成されており、各分割コイル１の
突起６を周方向に隣接する各分割コイル１の凹溝７に周
方向から圧入可能としている。A projection 6 and a concave groove 7 are formed at one end and the other end of the yoke portion 2 in the circumferential direction, respectively, and the projection 6 of each split coil 1 is recessed in each circumferentially adjacent split coil 1. 7 can be press-fitted in the circumferential direction.
【００１０】図１（Ｂ）（Ｃ）に明示されているよう
に、突起６と凹溝７との中間部には、ヨーク部２の各端
面の法線方向に一定幅で真直に延在するストレート部６
ａ，７ａが形成されており、突起６の先端部６ｂと凹溝
７の内底部７ｂとはストレート部６ａ，７ａの幅と同一
直径の半円状に形成されている。また、突起６と凹溝７
のヨーク部２の各端面寄りの部分には、ストレート部６
ａ，７ａに隣接する、ストレート部６ａ，７ａより幅狭
の縊れ部６ｃ，７ｃと、縊れ部６ｃ，７ｃからヨーク部
２の各端面に向って拡幅する拡幅部６ｄ，７ｄとが形成
されている。尚、縊れ部６ｃ，７ｃは、ストレート部６
ａ，７ａの側縁に、ストレート部６ａ，７ａの幅と同一
直径の円ａの円弧を介して連続しており、円ａの直径と
縊れ部６ｃ，７ｃを通る円ａの弦の長さとの差分だけ縊
れ部６ｃ，７ｃの幅がストレート部６ａ，７ａの幅より
僅かに（例えば0.05mm程度）狭くなっている。As clearly shown in FIGS. 1B and 1C, an intermediate portion between the protrusion 6 and the concave groove 7 extends straight with a constant width in the normal direction of each end face of the yoke portion 2. Straight part 6
a and 7a are formed, and the tip portion 6b of the projection 6 and the inner bottom portion 7b of the concave groove 7 are formed in a semicircular shape having the same diameter as the width of the straight portions 6a and 7a. Also, the projection 6 and the concave groove 7
The straight portion 6 is provided on each of the yoke portions 2 of the
a, 7a, which are adjacent to the straight portions 6a, 7a, are formed with narrower folds 6c, 7c, and widened portions 6d, 7d extending from the folds 6c, 7c toward the respective end surfaces of the yoke portion 2. Has been done. The twisted portions 6c and 7c are the straight portions 6c.
It is continuous to the side edges of a and 7a through an arc of a circle a having the same diameter as the width of the straight portions 6a and 7a, and the chord length of the circle a passing through the diameter of the circle a and the folds 6c and 7c. The widths of the twisted portions 6c and 7c are slightly narrower (for example, about 0.05 mm) than the widths of the straight portions 6a and 7a by the difference between the width and the width.
【００１１】突起６の拡幅部６ｄと凹溝７の拡幅部７ｄ
とは合同であるが、突起６のストレート部６ａの幅と長
さは凹溝７のストレート部７ａの幅と長さより若干大き
くなっている。例えば、ヨーク部２の径方向外側面の半
径が79.5mm、ヨーク部２の各端面の幅Ｔが9.5mmである
場合、突起６のストレート部６ａの長さＬ１と幅を夫々
1.0mm，6.02mmに設定し、凹溝７のストレート部７ａの
長さＬ２と幅を夫々0.98mm，5.98mmに設定する。Widened portion 6d of protrusion 6 and widened portion 7d of concave groove 7
However, the width and length of the straight portion 6a of the protrusion 6 are slightly larger than the width and length of the straight portion 7a of the concave groove 7. For example, when the radius of the radially outer surface of the yoke portion 2 is 79.5 mm and the width T of each end surface of the yoke portion 2 is 9.5 mm, the length L1 and the width of the straight portion 6a of the protrusion 6 are respectively set.
The length L2 and the width of the straight portion 7a of the concave groove 7 are set to 0.98 mm and 5.98 mm, respectively.
【００１２】また、ヨーク部２の径方向内側面が上記の
如く平坦面に形成されているため、ヨーク部２の端面か
らその法線方向に凹入する凹溝７は、次第に、ヨーク部
２の径方向内側面から離れ、ヨーク部２の径方向外側面
に近付く。その結果、凹溝７を、そのストレート部７ａ
の幅方向中心線ｂがヨーク部２の端面の幅方向中心を通
る法線ｃに合致するように形成すると、凹溝７の外径側
の溝壁２ａの曲げ剛性が内径側の溝壁２ｂの曲げ剛性よ
りも弱くなる。そこで、本実施形態では、凹溝７を、前
記中心線ｂが前記法線ｃに対し内径側に若干オフセット
されるように形成し、外径側溝壁２ａの曲げ剛性と内径
側溝壁２ｂの曲げ剛性とが等しくなるようにしている。
上記した寸法のヨーク部２の場合、前記法線ｃに対する
前記中心線ｂの内径側へのオフセット量を0.75mm程度に
設定すると、両溝壁２ａ，２ｂの曲げ剛性が等しくな
る。尚、当然のことではあるが、突起６もそのストレー
ト部６ａの中心線ｂがヨーク部２の端面の幅方向中心を
通る法線ｃに対し内径側にオフセットされるように形成
する。Further, since the radially inner side surface of the yoke portion 2 is formed as a flat surface as described above, the concave groove 7 which is recessed from the end surface of the yoke portion 2 in the normal direction thereof is gradually formed. Away from the inner side surface in the radial direction and approaches the outer side surface in the radial direction of the yoke portion 2. As a result, the concave groove 7 is formed in the straight portion 7a.
When the widthwise center line b of the concave portion 7 is formed so as to match the normal line c passing through the widthwise center of the end face of the yoke portion 2, the bending rigidity of the groove wall 2a on the outer diameter side of the concave groove 7 is the groove wall 2b on the inner diameter side. It becomes weaker than the bending rigidity. Therefore, in this embodiment, the concave groove 7 is formed such that the center line b is slightly offset to the inner diameter side with respect to the normal line c, and the bending rigidity of the outer diameter side groove wall 2a and the bending rigidity of the inner diameter side groove wall 2b are formed. The rigidity is made equal.
In the case of the yoke portion 2 having the above-described dimensions, when the offset amount of the center line b with respect to the normal line c toward the inner diameter side is set to about 0.75 mm, the bending rigidity of both groove walls 2a and 2b becomes equal. As a matter of course, the protrusion 6 is also formed so that the center line b of the straight portion 6a is offset to the inner diameter side with respect to the normal line c passing through the center of the end face of the yoke portion 2 in the width direction.
【００１３】以上の構成によれば、分割コア１の突起６
を周方向に隣接する分割コア１の凹溝７に前記法線方向
から圧入すると、凹溝７の外径側と内径側の溝壁２ａ，
２ｂの弾性域内での撓みにより、凹溝７の縊れ部７ｃが
突起６のストレート部６ａの通過を許容するように拡幅
され、突起６のストレート部６ａが凹溝７の縊れ部７ｃ
を通過したとき、凹溝７のストレート部７ａと縊れ部７
ｂとが突起６のストレート部６ａと縊れ部６ｂとに圧接
する。そして、ストレート部６ａ，７ａ同士の圧接によ
り、突起６と凹溝７との嵌合部を支点にした分割コア１
の傾動が防止されると共に、突起６のストレート部６ａ
の長さを凹溝７のストレート部７ａの長さより若干長く
してあるため、突起６の縊れ部６ｃと凹溝７の縊れ部７
ｃとの間の前記法線方向の締め代が確保され、その結
果、周方向に隣接する分割コア１，１間の周方向の遊び
が完全に除去される。また、凹溝７の外径側と内径側の
両溝壁２ａ，２ｂの曲げ剛性を等しくしているため、両
溝壁２ａ，２ｂが均等に撓み、突起６が凹溝７にその中
心線上で正しく嵌合する。かくて、周方向に隣接する分
割コア１，１を、前記法線に直交するヨーク部２，２の
端面同士を密に接触させた状態で、ガタや径方向の段差
を生ずることなく正確に連結できる。According to the above configuration, the projection 6 of the split core 1
Is pressed into the groove 7 of the divided core 1 adjacent in the circumferential direction from the normal direction, the groove walls 2a on the outer diameter side and the inner diameter side of the groove 7 are formed.
2b, the narrowed portion 7c of the groove 7 is widened so as to allow the straight portion 6a of the protrusion 6 to pass through, and the straight portion 6a of the protrusion 6 is narrowed by the narrowed portion 7c of the groove 7.
When passing through, the straight portion 7a of the groove 7 and the narrow portion 7
b contacts the straight portion 6a and the twisted portion 6b of the protrusion 6 under pressure. Then, the split core 1 with the fitting portion between the projection 6 and the concave groove 7 serving as a fulcrum by pressing the straight portions 6a and 7a together
Is prevented from tilting, and the straight portion 6a of the protrusion 6 is prevented.
Is slightly longer than the length of the straight portion 7a of the concave groove 7, the narrowed portion 6c of the projection 6 and the narrowed portion 7 of the concave groove 7 are formed.
c is secured in the normal direction, and as a result, circumferential play between the divided cores 1 and 1 adjacent in the circumferential direction is completely eliminated. In addition, since the outer wall and the inner wall 2a, 2b of the concave groove 7 have the same bending stiffness, the groove walls 2a, 2b are uniformly bent, and the protrusion 6 is formed on the concave groove 7 on the center line thereof. To fit correctly. Thus, in the state where the end faces of the yoke portions 2 and 2 perpendicular to the normal line are brought into close contact with each other, the divided cores 1 and 1 which are adjacent in the circumferential direction can be accurately formed without generating backlash or radial steps. Can be linked.
【００１４】ステータコアは、上記分割コイル１の複数
個を周方向に環状に連結して組立てられるもので、その
組立は図２及び図３に示す組立装置を用いて行われる。
組立装置は、基台１０と、基台１０の上方に設けた、ラ
ム等のプレス用駆動源で上下動される可動盤１１とを備
える、プレス装置と同様の装置で構成されている。The stator core is assembled by connecting a plurality of the split coils 1 in a ring shape in the circumferential direction, and the assembly is performed by using the assembling apparatus shown in FIGS. 2 and 3.
The assembling apparatus includes a base 10 and a movable plate 11 provided above the base 10 and moved up and down by a pressing drive source such as a ram.
【００１５】基台１０の上面には、放射状に複数のガイ
ド穴１２ａを開設した支持板１２が取付けられており、
該支持板１２上に、分割コア１を保持可能な複数の治具
１３を放射状に配置し、各治具１３の下面に設けたガイ
ド突起１３ａを各ガイド穴１２ａに係合させると共に、
基台１０上に、治具１３の浮上りを防止する中央部の押
え板１４1と、外周部の環状の押え板１４2とを夫々支柱
１４ａ，１４ｂを介して取付け、各治具１３を各ガイド
穴１２ａに沿って放射方向に摺動自在に支持している。A support plate 12 having a plurality of guide holes 12a formed radially is attached to the upper surface of the base 10.
A plurality of jigs 13 capable of holding the split cores 1 are radially arranged on the support plate 12, and guide projections 13a provided on the lower surface of each jig 13 are engaged with each guide hole 12a.
On the base 10, a central holding plate 14 1 for preventing the jig 13 from rising and an annular holding plate 14 2 on the outer peripheral portion are attached via columns 14a and 14b, respectively, and each jig 13 is attached. It is slidably supported in the radial direction along each guide hole 12a.
【００１６】各治具１３は、分割コア１を上方から挿入
セット自在な凹入部１３ｂを備えており、更に、凹入部
１３ｂの放射方向内方部分に、図４に示す如く、内端の
立上り部１３ｃとの間に間隔を存して１対の小突起１３
ｄ，１３ｄを突設し、これら立上り部１３ｃと小突起１
３ｄ，１３ｄとで歯部４を周方向に位置決めして係合可
能な係合溝１３ｅを構成している。Each jig 13 is provided with a recessed portion 13b into which the split core 1 can be inserted and set from above. Further, as shown in FIG. 4, the inner end of the recessed portion 13b rises inward in the radial direction of the recessed portion 13b. A pair of small protrusions 13 spaced apart from the portion 13c
d and 13d are projected, and these rising portions 13c and small projections 1
3d and 13d form the engaging groove 13e which can position and engage the tooth portion 4 in the circumferential direction.
【００１７】可動盤１１の下面には、各治具１３の放射
方向外端の傾斜面１３ｆに当接可能な下端の傾斜カム面
１５ａを有するカム１５が垂設されており、更に、全て
の分割コア１のヨーク部２に上方から当接してこれら分
割コア１の浮上りを防止する環状のパッド１６がばね１
６ａで下方に付勢して取付けられている。尚、本実施形
態では、カム１５を各治具１３毎に個別に設けている
が、全ての治具１３に共用される環状の単一のカムを設
けても良い。On the lower surface of the movable plate 11, a cam 15 having an inclined cam surface 15a at the lower end capable of contacting the inclined surface 13f at the outer end in the radial direction of each jig 13 is hung. The annular pad 16 that abuts on the yoke portion 2 of the split core 1 from above and prevents the split cores 1 from floating up is the spring 1.
It is urged downward by 6a and attached. In the present embodiment, the cam 15 is individually provided for each jig 13, but a single annular cam shared by all the jigs 13 may be provided.
【００１８】ステータコアの組立に際しては、先ず、図
２の左半部に示されているように、可動盤１１を上方位
置に戻すと共に全ての治具１３を放射方向外方位置に戻
した状態で、各治具１３に各分割コア１をセットする。
この状態では、図３の左半部に示されているように、各
分割コア１の突起６の先端部６ｂが周方向に隣接する分
割コア１の凹溝７の拡幅部７ｂに入り込んだ状態で、複
数の分割コア１が環状に配置される。In assembling the stator core, first, as shown in the left half of FIG. 2, with the movable platen 11 returned to the upper position and all the jigs 13 returned to the radial outer position. Then, each split core 1 is set in each jig 13.
In this state, as shown in the left half of FIG. 3, the tip 6b of the protrusion 6 of each split core 1 has entered the widened portion 7b of the concave groove 7 of the split core 1 adjacent in the circumferential direction. Thus, the plurality of split cores 1 are arranged in a ring shape.
【００１９】次に、図２の右半部に示されているよう
に、可動盤１１を下降させるが、これによれば全ての治
具１３がカム１５に押されて互に同期して放射方向内方
に前進し、これら治具１３に保持される複数の分割コア
１が周方向に接近する。そして、各分割コア１の突起６
が周方向に隣接する各分割コア１の凹溝７に周方向、即
ち、ヨーク部２の端面の法線方向から圧入され、図３の
右半部に示されているように、複数の分割コア１が周方
向に連結される。Next, as shown in the right half of FIG. 2, the movable platen 11 is lowered. According to this, all the jigs 13 are pushed by the cams 15 and radiate in synchronization with each other. The plurality of split cores 1 held by these jigs 13 approach in the circumferential direction by advancing inward in the direction. Then, the protrusion 6 of each split core 1
Are press-fitted into the concave groove 7 of each of the split cores 1 adjacent to each other in the circumferential direction from the circumferential direction, that is, the direction normal to the end face of the yoke portion 2, and as shown in the right half of FIG. The core 1 is connected in the circumferential direction.
【００２０】この状態では、突起６のストレート部６ａ
と縊れ部６ｃとに凹溝７のストレート部７ａと縊れ部７
ｃとが上記の如く充分な締め代を持って圧接して、分割
コア１同士がガタ無く連結されると共に、パッド１６に
よる分割コア１の浮上り防止で分割コア１間の平坦度も
確保され、更に、各分割コア１の歯部４が各治具１３の
係合溝１３ｅによって周方向に位置決めされているた
め、隣接する分割コア１，１の歯部４，４間のクリアラ
ンスが一定に揃えられ、かくて高品質のステータコアが
得られる。In this state, the straight portion 6a of the protrusion 6 is
And the twisted portion 6c, the straight portion 7a of the groove 7 and the twisted portion 7
c is pressed against each other with a sufficient tightening margin as described above, the split cores 1 are connected to each other without backlash, and the flatness between the split cores 1 is secured by the floating prevention of the split cores 1 by the pad 16. Furthermore, since the tooth portion 4 of each split core 1 is circumferentially positioned by the engagement groove 13e of each jig 13, the clearance between the tooth portions 4 and 4 of the adjacent split cores 1, 1 is constant. Aligned and thus a high quality stator core is obtained.
【図１】 (A)本発明に係るステータコアの構成単位と
なる分割コアの一例の平面図、(B)分割コアの突起部分
の拡大平面図、(C)分割コアの凹溝部分の拡大平面図FIG. 1A is a plan view of an example of a split core that is a constituent unit of a stator core according to the present invention, FIG. 1B is an enlarged plan view of a protruding portion of the split core, and FIG. Figure
【図２】 ステータコアの組立に用いる装置の縦断面図FIG. 2 is a vertical sectional view of an apparatus used for assembling a stator core.
【図３】 図２のIII-III線截断平面図FIG. 3 is a plan view cut along the line III-III of FIG. 2;
【図４】 組立装置に設けられる治具の斜視図FIG. 4 is a perspective view of a jig provided in the assembling apparatus.
１ 分割コア ２ ヨーク部 ２ａ 外径側溝壁 ２ｂ 内径側溝壁 ６ 突起 ６ａ ストレート部 ６ｂ 先端部 ６ｃ 縊れ部 ６ｄ 拡幅部 ７ 凹溝 ７ａ ストレート部 ７ｂ 内底部 ７ｃ 縊れ部 ７ｄ 拡幅部 1 split core 2 yoke part 2a outer diameter side groove wall 2b inner diameter side groove wall 6 protrusion 6a straight part 6b tip part 6c twisted part 6d widened part 7 recessed groove 7a straight part 7b inner bottom part 7c twisted part 7d widened part
Claims (3)
部の周方向一端と他端とに夫々突起と凹溝とを形成し、
複数の分割コアを、隣接する一方の分割コアの突起を他
方の分割コアの凹溝に嵌合させることにより、周方向に
連結して組立てられるステータコアにおいて、 突起と凹溝との中間部分に、ヨーク部の各端面の法線方
向に一定幅で真直に延在するストレート部を形成し、突
起の先端部と凹溝の内底部とをストレート部の幅と同一
の直径の半円状に形成すると共に、突起と凹溝のヨーク
部の各端面寄りの部分に、ストレート部に隣接する、ス
トレート部より幅狭の縊れ部と、縊れ部からヨーク部の
各端面に向かって拡幅する拡幅部とを形成し、 突起を前記法線方向から凹溝に圧入する際に、凹溝の外
径側と内径側の溝壁の弾性域内での撓みにより凹溝の縊
れ部が突起のストレート部の通過を許容するように拡幅
され、突起のストレート部が凹溝の縊れ部を通過したと
き、凹溝のストレート部と縊れ部とが夫々突起のストレ
ート部と縊れ部とに圧接するようにした、ことを特徴と
するステータコア。1. A projection and a concave groove are formed at one end and the other end in the circumferential direction of a yoke portion of each divided core divided in a circumferential direction, respectively.
In a stator core assembled by connecting a plurality of split cores with protrusions of one of the adjacent split cores in concave grooves of the other split core, the stator cores assembled in the circumferential direction are assembled in an intermediate portion between the protrusions and the concave grooves. A straight part that extends straight with a constant width in the normal direction of each end surface of the yoke part is formed, and the tip of the protrusion and the inner bottom of the groove are formed in a semicircular shape with the same diameter as the width of the straight part. In addition, the protrusions and the concave grooves, which are adjacent to the end surfaces of the yoke portion, are adjacent to the straight portion, and have a narrower width than the straight portion. And when the projection is press-fitted into the groove from the normal direction, the folds of the groove on the outer diameter side and the inner diameter side of the groove bend in the elastic region, so that the twisted portion of the groove is straight. Is widened to allow the passage of parts, and the straight part of the protrusion is a groove When passing through the constricted portion, the stator core, wherein the a constricted portion straight portion of the groove is in pressure-contact to the portion constricted as the straight portion of each projection, that.
がヨーク部の周方向他端面の幅方向中心を通る法線に対
し内径側にオフセットされるように形成して、凹溝の外
径側の溝壁の曲げ剛性と内径側の溝壁の曲げ剛性とが等
しくなるようにすることを特徴とする請求項１に記載の
ステータコア。2. The concave groove is formed so that the center line in the width direction of the straight portion is offset to the inner diameter side with respect to the normal line passing through the center in the width direction of the other end surface in the circumferential direction of the yoke portion. The stator core according to claim 1, wherein the bending rigidity of the groove wall on the outer diameter side is equal to the bending rigidity of the groove wall on the inner diameter side.
線方向の締め代が確保されるように、突起のストレート
部の長さを凹溝のストレート部の長さより若干長くする
ことを特徴とする請求項１又は２に記載のステータコ
ア。3. The length of the straight portion of the protrusion is set to be slightly longer than the length of the straight portion of the concave groove so as to secure the interference in the normal direction between the twisted portions of the protrusion and the concave groove. The stator core according to claim 1 or 2, characterized in that.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03517196A JP3306645B2 (en) | 1996-02-22 | 1996-02-22 | Stator core |
| GB9702521A GB2310545B (en) | 1996-02-22 | 1997-02-07 | Stator core and method and apparatus for assembling same |
| US08/803,228 US5786651A (en) | 1996-02-22 | 1997-02-20 | Stator core having a plurality of connected circumferentially segmented cores and method and apparatus for assembling same |
| US09/078,683 US6219900B1 (en) | 1996-02-22 | 1998-05-14 | Method of assembling a stator core |
| US09/776,634 US6684489B2 (en) | 1996-02-22 | 2001-02-06 | Apparatus for assembling a stator core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03517196A JP3306645B2 (en) | 1996-02-22 | 1996-02-22 | Stator core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09233742A true JPH09233742A (en) | 1997-09-05 |
| JP3306645B2 JP3306645B2 (en) | 2002-07-24 |
Family
ID=12434420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03517196A Expired - Fee Related JP3306645B2 (en) | 1996-02-22 | 1996-02-22 | Stator core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3306645B2 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1189129A (en) * | 1997-09-12 | 1999-03-30 | Honda Motor Co Ltd | Generator motor |
| WO2002078149A1 (en) * | 2001-03-26 | 2002-10-03 | Emerson Electric Co. | A fan assembly including a segmented stator switch reluctance fan motor |
| US6897591B2 (en) | 2001-03-26 | 2005-05-24 | Emerson Electric Co. | Sensorless switched reluctance electric machine with segmented stator |
| US7012350B2 (en) | 2001-01-04 | 2006-03-14 | Emerson Electric Co. | Segmented stator switched reluctance machine |
| JP2006223076A (en) * | 2005-02-14 | 2006-08-24 | Toshiba Corp | Outer rotor and manufacturing method thereof |
| JP2006352991A (en) * | 2005-06-15 | 2006-12-28 | Toshiba Industrial Products Manufacturing Corp | Stator core and stator for rotating electrical machine |
| JP2007538481A (en) * | 2004-05-17 | 2007-12-27 | グロンドフォス アー／エス | Stratified iron core and method for producing stratified core |
| JP2011045179A (en) * | 2009-08-20 | 2011-03-03 | Honda Motor Co Ltd | Stator and method for manufacturing the same |
| WO2011065080A1 (en) * | 2009-11-30 | 2011-06-03 | 株式会社富士通ゼネラル | Axial gap motor and pump device |
| JP2011182553A (en) * | 2010-03-01 | 2011-09-15 | Toyota Motor Corp | Stator |
| US8590137B2 (en) | 2008-12-09 | 2013-11-26 | Toyota Jidosha Kabushiki Kaisha | Method of manufacturing a stator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3355700B2 (en) | 1993-06-14 | 2002-12-09 | 松下電器産業株式会社 | Rotating electric machine stator |
-
1996
- 1996-02-22 JP JP03517196A patent/JP3306645B2/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1189129A (en) * | 1997-09-12 | 1999-03-30 | Honda Motor Co Ltd | Generator motor |
| US7012350B2 (en) | 2001-01-04 | 2006-03-14 | Emerson Electric Co. | Segmented stator switched reluctance machine |
| WO2002078149A1 (en) * | 2001-03-26 | 2002-10-03 | Emerson Electric Co. | A fan assembly including a segmented stator switch reluctance fan motor |
| US6897591B2 (en) | 2001-03-26 | 2005-05-24 | Emerson Electric Co. | Sensorless switched reluctance electric machine with segmented stator |
| JP2007538481A (en) * | 2004-05-17 | 2007-12-27 | グロンドフォス アー／エス | Stratified iron core and method for producing stratified core |
| US9000650B2 (en) | 2004-05-17 | 2015-04-07 | Grundfos A/S | Laminated core for electromagnetic applications |
| JP2006223076A (en) * | 2005-02-14 | 2006-08-24 | Toshiba Corp | Outer rotor and manufacturing method thereof |
| JP2006352991A (en) * | 2005-06-15 | 2006-12-28 | Toshiba Industrial Products Manufacturing Corp | Stator core and stator for rotating electrical machine |
| US8590137B2 (en) | 2008-12-09 | 2013-11-26 | Toyota Jidosha Kabushiki Kaisha | Method of manufacturing a stator |
| JP2011045179A (en) * | 2009-08-20 | 2011-03-03 | Honda Motor Co Ltd | Stator and method for manufacturing the same |
| WO2011065080A1 (en) * | 2009-11-30 | 2011-06-03 | 株式会社富士通ゼネラル | Axial gap motor and pump device |
| JP2011182553A (en) * | 2010-03-01 | 2011-09-15 | Toyota Motor Corp | Stator |
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|---|---|
| JP3306645B2 (en) | 2002-07-24 |
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