JP4708693B2

JP4708693B2 - Synchronous machine

Info

Publication number: JP4708693B2
Application number: JP2003345085A
Authority: JP
Inventors: 欽志郎内藤; 篤藏関山; 吉人猪爪; 浩渋谷
Original assignee: Amada Co Ltd
Current assignee: Amada Co Ltd
Priority date: 2003-10-02
Filing date: 2003-10-02
Publication date: 2011-06-22
Anticipated expiration: 2023-10-02
Also published as: JP2005117710A

Description

この発明は同期機に関するものである。 The present invention relates to a synchronous machine.

一般に、同期機には、固定子鉄心が継鉄部と歯部とに分割されるものがある。また、歯部には、各歯がバラバラのものと、すべての歯が一体になったものとがある。
特開２００１−１１９８７４号公報 Generally, in some synchronous machines, a stator core is divided into a yoke part and a tooth part. In addition, the tooth portion includes those in which each tooth is separated and those in which all teeth are integrated.
Japanese Patent Laid-Open No. 2001-119874

しかしながら、歯部の各歯がバラバラのものは、各歯を１つずつ継鉄部に固着しなければならないから、固定子鉄心の組み立てに手間がかかり、製造コストが嵩むという問題があった。 However, when each tooth of the tooth part is disjoint, each tooth has to be fixed to the yoke part one by one, so that there is a problem that it takes time to assemble the stator core and the manufacturing cost increases.

また、歯部のすべての歯が一体になったものは、継鉄部に圧入することで固定されるのが一般的である。ところが、このような一体化された歯部の場合、継鉄部に圧入される前に固定子コイルが巻かれているのが普通であり、しかもこの巻かれた固定子コイルは、一体化歯部の半径方向外方へ浮いてくる傾向がある。 Moreover, what united all the teeth of the tooth | gear part is generally fixed by press-fitting in a yoke part. However, in the case of such an integrated tooth portion, the stator coil is usually wound before being pressed into the yoke portion. There is a tendency to float outward in the radial direction.

そのため、このような固定子コイルの浮き上がりを抑制しながら一体化歯部を継鉄部に圧入することは、固定子コイルの損傷を回避しながら慎重に行わなければならないため、困難な作業を強いられ、また、専用の治具を用いるなどすれば製造コストが嵩むという問題があった。 For this reason, pressing the integrated tooth portion into the yoke portion while suppressing the lifting of the stator coil must be performed carefully while avoiding damage to the stator coil, and thus it is difficult to perform a difficult operation. In addition, if a dedicated jig is used, the manufacturing cost increases.

この発明の課題は、上記従来のもののもつ問題点を排除して、比較的簡単な作業で、しかも低コストで固定子鉄心の組み立てを行うことのできる同期機を提供することにある。 SUMMARY OF THE INVENTION An object of the present invention is to provide a synchronous machine that can assemble a stator core by a relatively simple operation and at a low cost by eliminating the problems of the conventional ones.

この発明は上記課題を解決するものであって、請求項１に係る発明は、鋼板を多数枚積層して構成される固定子鉄心を備えた同期機において、
前記鋼板を継鉄部鋼板と歯部鋼板とに分割して構成し、
前記歯部鋼板の各歯の歯元の両側縁を歯元端に向かって広がるテーパ状に形成し、
前記継鉄部鋼板の内周縁に、前記歯部鋼板の各歯の歯元を係止するため両側縁が入口から奥に向かって広がるテーパ状の多数の係止溝を形成し、前記歯部鋼板を、各歯の隣り合う歯先どうしが連結部を介して円形に連なる１枚の鋼板で形成し、
前記各歯間の各スロットに固定子コイルを巻きながら収容し、固定子コイル付き歯は完成するものであり、積層されて列状に構成される前記各歯は、円形の連結部から放射状に形成され、各スロットは底部に比べて入口部の方が断面積が広く、固定子コイルを各スロットに挿入する際には断面積の広い入口部から行われ、前記各歯の歯元はテーパ状に広がり、各スロットに挿入された固定子コイルがスロットから外方へ浮いてくることを抑制するものであり、
テーパ状の押え部材を前記各歯の適宜箇所に嵌合しておき、継鉄部鋼板に組み付けられるまでの間、固定子コイル付き歯のすべてのスロット内の固定子コイルが半径方向外方へ浮いてくることを防止するものであり、一体化した継鉄部鋼板に、一体化した固定子コイル付き歯を、軸心を揃えて組み付けたうえ、両端に押え板を配し、通し孔にボルトを通して一体化することで、固定子が構成され、前記継鉄部鋼板の内周縁に形成された多数のテーパ状の係止溝に、固定子コイル付き歯の外周縁に形成された多数のテーパ状の歯元が、固定子鉄心の軸線に沿って嵌め込まれていくことで、前記固定子コイルの浮き上がりを抑えた押え部材は、前記継鉄部鋼板に押されて歯元に沿って摺動していき、最後に歯元から抜け落ち、前記継鉄部鋼板への固定子コイル付き歯の組み付けが終了する瞬間まで、前記押え部材による前記固定子コイルの浮き上がりを抑止する抑止機能を備えた同期機である。 This invention solves the said subject, The invention which concerns on Claim 1 is a synchronous machine provided with the stator core comprised by laminating | stacking many steel plates,
The steel plate is divided into a yoke steel plate and a tooth steel plate,
Forming both side edges of the tooth base of each tooth of the toothed steel plate into a tapered shape extending toward the tooth end;
In the inner peripheral edge of the yoke steel plate, a plurality of tapered locking grooves whose both side edges widen from the entrance to the back to lock the tooth base of each tooth of the tooth steel plate are formed. The steel plate is formed of a single steel plate in which the adjacent tooth tips of each tooth are connected in a circle through the connecting portion,
The stator coil is housed while winding the stator coil in each slot between the teeth, and the teeth with the stator coil are completed, and the teeth that are stacked and arranged in a row are radiated from a circular connecting portion. Each slot has a larger cross-sectional area at the inlet than at the bottom, and when the stator coil is inserted into each slot, the slot is formed from the wide inlet, and the tooth base of each tooth is tapered. The stator coil inserted in each slot is prevented from floating outward from the slot ,
The stator coil in all slots of the teeth with the stator coil is radially outward until the taper-shaped pressing member is fitted to appropriate positions of the teeth and assembled to the yoke steel plate. To prevent floating, the integrated yoke coil with integrated stator coil is assembled with the shaft center aligned, and presser plates are placed at both ends, and the through holes are By integrating through the bolts, the stator is configured, and in a number of tapered locking grooves formed on the inner peripheral edge of the yoke part steel plate, a large number of formed on the outer peripheral edge of the teeth with the stator coil Since the tapered tooth base is fitted along the axis of the stator core, the holding member that suppresses the lifting of the stator coil is pushed by the yoke steel plate and slides along the tooth base. Move to the end, and finally fall off from the tooth base, Stator until the moment in which the assembly of toothed coil ends is a synchronous machine having a suppression function of suppressing floating of the stator coil by the pressing member.

請求項２に係る発明は、鋼板を多数枚積層して構成される固定子鉄心を備えた同期機において、
前記鋼板を継鉄部鋼板と歯部鋼板とに分割して構成し、
前記歯部鋼板の各歯の歯元の両側縁を歯元端に向かって広がるテーパ状に形成し、
前記継鉄部鋼板の内周縁に、前記歯部鋼板の各歯の歯元を係止するため両側縁が入口から奥に向かって広がるテーパ状の多数の係止溝を形成し、前記歯部鋼板を、各歯の隣り合う歯先どうしが連結部を介して円形に連なる１枚の鋼板で形成し、
前記各歯間の各スロットに固定子コイルを巻きながら収容し、固定子コイル付き歯は完成するものであり、積層されて列状に構成される前記各歯は、円形の連結部から放射状に形成され、各スロットは底部に比べて入口部の方が断面積が広く、固定子コイルを各スロットに挿入する際には断面積の広い入口部から行われ、前記各歯の歯元はテーパ状に広がり、各スロットに挿入された固定子コイルがスロットから外方へ浮いてくることを抑制し、前記継鉄部鋼板の外周縁に複数の突片を間隔を保って形成したものであり、
テーパ状の押え部材を前記各歯の適宜箇所に嵌合しておき、継鉄部鋼板に組み付けられるまでの間、固定子コイル付き歯のすべてのスロット内の固定子コイルが半径方向外方へ浮いてくることを防止するものであり、一体化した継鉄部鋼板に、一体化した固定子コイル付き歯を、軸心を揃えて組み付けたうえ、両端に押え板を配し、通し孔にボルトを通して一体化することで、固定子が構成され、前記継鉄部鋼板の内周縁に形成された多数のテーパ状の係止溝に、固定子コイル付き歯の外周縁に形成された多数のテーパ状の歯元が、固定子鉄心の軸線に沿って嵌め込まれていくことで、前記固定子コイルの浮き上がりを抑えた押え部材は、前記継鉄部鋼板に押されて歯元に沿って摺動していき、最後に歯元から抜け落ち、前記継鉄部鋼板への固定子コイル付き歯の組み付けが終了する瞬間まで、前記押え部材による前記固定子コイルの浮き上がりを抑止する抑止機能を備えた同期機である。 The invention according to claim 2 is a synchronous machine including a stator core configured by laminating a large number of steel plates.
The steel plate is divided into a yoke steel plate and a tooth steel plate,
Forming both side edges of the tooth base of each tooth of the toothed steel plate into a tapered shape extending toward the tooth end;
In the inner peripheral edge of the yoke steel plate, a plurality of tapered locking grooves whose both side edges widen from the entrance to the back to lock the tooth base of each tooth of the tooth steel plate are formed. The steel plate is formed of a single steel plate in which the adjacent tooth tips of each tooth are connected in a circle through the connecting portion,
The stator coil is housed while winding the stator coil in each slot between the teeth, and the teeth with the stator coil are completed, and the teeth that are stacked and arranged in a row are radiated from a circular connecting portion. Each slot has a larger cross-sectional area at the inlet than at the bottom, and when the stator coil is inserted into each slot, the slot is formed from the wide inlet, and the tooth base of each tooth is tapered. The stator coil inserted in each slot is prevented from floating outward from the slot, and a plurality of protruding pieces are formed at intervals on the outer peripheral edge of the yoke steel plate . ,
The stator coil in all slots of the teeth with the stator coil is radially outward until the taper-shaped pressing member is fitted to appropriate positions of the teeth and assembled to the yoke steel plate. To prevent floating, the integrated yoke coil with integrated stator coil is assembled with the shaft center aligned, and presser plates are placed at both ends, and the through holes are By integrating through the bolts, the stator is configured, and in a number of tapered locking grooves formed on the inner peripheral edge of the yoke part steel plate, a large number of formed on the outer peripheral edge of the teeth with the stator coil Since the tapered tooth base is fitted along the axis of the stator core, the holding member that suppresses the lifting of the stator coil is pushed by the yoke steel plate and slides along the tooth base. Move to the end, and finally fall off from the tooth base, Stator until the moment in which the assembly of toothed coil ends is a synchronous machine having a suppression function of suppressing floating of the stator coil by the pressing member.

請求項３に係る発明は、前記継鉄部鋼板を積層する際、前記突片のある部分とない部分とが所定枚数ごとに交互に切り替わるように積層することで、重ね合わされた所定枚数分の前記突片により構成される所要厚さの突起を、前記固定子鉄心の外側表面に多数形成すると共に、前記継鉄部鋼板を前記固定子鉄心の中心まわり方向に沿って複数の鋼板片に分割し、各鋼板片どうしの接合部を、先端に向かってテーパ状に広がる係止突片と、入口から奥に向かってテーパ状に広がる係止溝とによる接合構造としたことを特徴とする請求項２記載の同期機。 In the invention according to claim 3, when laminating the yoke steel plates, by laminating so that the portions with and without the protruding pieces are alternately switched every predetermined number, A plurality of protrusions having a required thickness constituted by the protrusions are formed on the outer surface of the stator core , and the yoke steel plate is divided into a plurality of steel plate pieces along the direction around the center of the stator core. In addition, the joining portion of each steel sheet piece has a joining structure formed by a locking protrusion that tapers toward the tip and a locking groove that tapers from the inlet to the back. Item 3. A synchronous machine according to item 2.

この発明は以上のように、鋼板を多数枚積層して構成される固定子鉄心を備えた同期機において、前記鋼板を継鉄部鋼板と歯部鋼板とに分割して構成し、前記歯部鋼板の各歯の歯元の両側縁を歯元端に向かって広がるテーパ状に形成し、前記継鉄部鋼板の内周縁に、前記歯部鋼板の各歯の歯元を係止するため両側縁が入口から奥に向かって広がるテーパ状の多数の係止溝を形成したので、積層された歯部鋼板の各歯の歯元端に向かって広がるテーパ状の歯元形状を、積層された継鉄部鋼板の入口から奥に向かって広がるテーパ状の多数の係止溝に嵌め込むだけで、固定子鉄心を組み立てることができ、しかもこのとき、歯部鋼板の各歯に巻かれた固定子コイルは、各歯の歯元端に向かって広がるテーパ状の歯元形状によって、歯部鋼板の半径方向外方への浮き上がり傾向を抑制されるから、比較的簡単な作業で、しかも低コストで固定子鉄心の組み立てを行うことができる効果がある。 As described above, the present invention provides a synchronous machine including a stator core configured by laminating a large number of steel plates, and is configured by dividing the steel plate into a yoke steel plate and a tooth steel plate, and the tooth portion. Both side edges of the tooth base of each tooth of the steel plate are formed in a tapered shape extending toward the tooth end, and both sides are used to lock the tooth base of each tooth of the tooth steel plate to the inner peripheral edge of the yoke steel plate. Since a large number of tapered locking grooves whose edges widen from the entrance toward the back are formed, a tapered tooth root shape that spreads toward the tooth root end of each tooth of the laminated tooth steel plates is laminated. The stator core can be assembled simply by fitting into the numerous tapered locking grooves extending from the entrance of the yoke steel plate to the back, and at this time, the fixing wound around each tooth of the tooth steel plate The child coil has a tapered root shape that spreads toward the root end of each tooth. Thereby inhibited from lifting tendency to direction outwardly, in relatively simple task, yet there is an effect that can be assembled in the stator core at a low cost.

この発明の実施の形態を、図面を参照して説明する。
図１は、この発明による同期機の一実施の形態を回転子を省略して示す概略的断面図、図２は、図１の同期機を一部破断にして示す側面図（平面図も同様）、図３は図１の要部の拡大図である。この同期機（例えば同期電動機）１は、固定子１０の外側表面、すなわち固定子鉄心（磁気回路コア）１２の外側表面に多数の突起５０が形成してある。 Embodiments of the present invention will be described with reference to the drawings.
1 is a schematic sectional view showing an embodiment of a synchronous machine according to the present invention with a rotor omitted, and FIG. 2 is a side view showing the synchronous machine of FIG. 3 is an enlarged view of the main part of FIG. In this synchronous machine (for example, a synchronous motor) 1, a large number of protrusions 50 are formed on the outer surface of the stator 10, that is, on the outer surface of the stator core (magnetic circuit core) 12.

図１に示すように、固定子１０は、四隅に切り欠きのある実質的に正方形の断面形状を有し、その中心部に図示しない回転子を回転自在に収容する円筒形の空洞１１を有している。また、固定子１０は、固定子鉄心１２と固定子コイル（電機子コイル）１６とで構成されている。 As shown in FIG. 1, the stator 10 has a substantially square cross-sectional shape with notches at four corners, and has a cylindrical cavity 11 that rotatably accommodates a rotor (not shown) at the center. is doing. The stator 10 includes a stator core 12 and a stator coil (armature coil) 16.

図１、図３に示すように、固定子鉄心１２は、継鉄（ヨーク）１３とその内側にある多数の歯（ティース）１４Ｔとで構成され、これらの歯（ティース）１４Ｔと歯（ティース）１４Ｔの間に形成される多数のスロット１５内に固定子コイル１６が収容されるものである。 As shown in FIGS. 1 and 3, the stator core 12 is composed of a yoke (yoke) 13 and a large number of teeth (teeth) 14 T inside thereof, and these teeth (teeth) 14 T and teeth (teeth) are formed. ) The stator coil 16 is accommodated in a number of slots 15 formed between 14T.

固定子鉄心１２は、図４〜図６に示すような鋼板３０，４０を多数枚積層して構成されるものであり、この鋼板３０，４０を、継鉄（ヨーク）１３となる継鉄部鋼板３０と、歯（ティース）１４Ｔとなる歯部鋼板４０とに分割して構成してある。 The stator core 12 is configured by laminating a large number of steel plates 30 and 40 as shown in FIGS. 4 to 6, and the steel plates 30 and 40 are used as yokes 13. The steel plate 30 is divided into a tooth steel plate 40 to be teeth (teeth) 14T.

図４に示すように、継鉄部鋼板３０は、固定子鉄心１２の中心Ｏから等距離の位置に互いに直交する４辺の外周縁３１を有し、固定子鉄心１２の中心Ｏを中心とする実質的に円形の内周縁を有する概略形状をしたものである。また、四隅の切り欠き部付近には、固定子１０を構成する際にボルトを通す通し孔１８（図１参照）となる孔３８が形成されている。 As shown in FIG. 4, the yoke steel plate 30 has four outer peripheral edges 31 that are orthogonal to each other at equal distances from the center O of the stator core 12, and the center O of the stator core 12 is the center. And having a substantially circular inner periphery. Further, in the vicinity of the cutouts at the four corners, holes 38 are formed which serve as through holes 18 (see FIG. 1) through which bolts pass when the stator 10 is formed.

また、継鉄部鋼板３０は２種類の継鉄部鋼板３０Ａ，３０Ｂで構成される。継鉄部鋼板３０Ａは、図４（ａ）に示すように、４辺の外周縁３１がいずれも平坦な直線状のものである。一方、継鉄部鋼板３０Ｂは、図４（ｂ）に示すように、継鉄部鋼板３０Ａの４辺の外周縁３１に相当する位置から複数の突片３５が形成されたものである。継鉄部鋼板３０Ｂは、各突片３５の幅が一定で、隣り合う突片３５どうしの間隔が突片３５の幅とほぼ等しく形成されている。 Moreover, the yoke part steel plate 30 is comprised by two types of yoke part steel plates 30A and 30B. As shown in FIG. 4A, the yoke part steel plate 30A has a linear shape in which the four outer peripheral edges 31 are flat. On the other hand, as shown in FIG. 4B, the yoke part steel plate 30B has a plurality of protruding pieces 35 formed from positions corresponding to the outer peripheral edges 31 on the four sides of the yoke part steel plate 30A. In the yoke steel plate 30 B, the width of each protrusion 35 is constant, and the interval between adjacent protrusions 35 is substantially equal to the width of the protrusion 35.

そのため、このような継鉄部鋼板３０Ｂを任意枚数積層すると、重ね合わされた枚数分の突片３５により所要厚さＤ１の突起５０（図２参照）が構成される。また、このような任意枚数の継鉄部鋼板３０Ｂと、同様な任意枚数の継鉄部鋼板３０Ｂとの間に、継鉄部鋼板３０Ａを任意枚数積層してサンドイッチにすると、継鉄部鋼板３０Ｂの突片３５による所要厚さＤ１の突起５０と、同様な継鉄部鋼板３０Ｂの突片３５による所要厚さＤ１の突起５０との間に、突片３５のない間隔Ｄ２（図２参照）が形成されることとなる。 Therefore, when an arbitrary number of such yoke part steel plates 30B are stacked, the protrusions 35 (see FIG. 2) having the required thickness D1 are constituted by the protrusions 35 corresponding to the overlapped number of sheets. Further, when an arbitrary number of yoke part steel plates 30A are laminated between such an arbitrary number of yoke part steel plates 30B and a similar arbitrary number of yoke part steel sheets 30B, the yoke part steel sheet 30B is obtained. The distance D2 without the protrusion 35 between the protrusion 50 having the required thickness D1 by the protrusion 35 and the protrusion 50 having the required thickness D1 by the protrusion 35 of the similar yoke steel plate 30B (see FIG. 2). Will be formed.

そして、このような継鉄部鋼板３０Ａ，３０Ｂを所定枚数ずつ交互に積層して、例えば外周縁の各辺ごとに適宜数選んだ箇所に全枚数を通じて溶接を施すことで、継鉄部鋼板３０全体を一体化する。これにより、重ね合わされた所定枚数分の突片３５により構成される所要厚さＤ１の突起５０が外側表面に多数形成された継鉄（ヨーク）１３が完成することとなる。 And such a yoke part steel plate 30A, 30B is laminated | stacked alternately for every predetermined number, for example, it welds through the whole number to the location selected suitably for every each side of an outer periphery, The yoke part steel plate 30 Integrate the whole. As a result, the yoke (yoke) 13 in which a large number of protrusions 50 of the required thickness D1 constituted by the predetermined number of protrusions 35 superimposed on each other is formed on the outer surface is completed.

このとき、継鉄（ヨーク）１３の外側表面に形成された多数の突起５０が、溶接の熱を逃がして溶接歪みを抑えることができる利点がある。 At this time, there is an advantage that a large number of protrusions 50 formed on the outer surface of the yoke 13 can release welding heat and suppress welding distortion.

図５、図６（ｂ）に示すように、歯部鋼板４０は、多数の歯（ティース）１４Ｔとなる各鋼板歯４１の隣り合う歯先４３どうしが連結部４４を介して円形に連なる１枚の鋼板で形成されている。また、鋼板歯４１と鋼板歯４１との間には、スロット１５となる切り欠き４５が形成されている。 As shown in FIG. 5 and FIG. 6B, the toothed steel plate 40 is formed by connecting the adjacent tooth tips 43 of the steel plate teeth 41 that form a large number of teeth 14 T in a circular manner via the connecting portion 44. It is made of a sheet of steel. Further, a notch 45 serving as the slot 15 is formed between the steel plate teeth 41 and the steel plate teeth 41.

そして、各鋼板歯４１の歯元４２は、両側縁を歯元端に向かって（すなわち歯部鋼板４０の半径方向外方に向かって）広がるテーパ状に形成してある。 And the tooth base 42 of each steel plate tooth 41 is formed in the taper shape which spreads a both-sides edge toward a tooth root end (namely, toward the radial direction outward of the tooth part steel plate 40).

一方、図４、図６（ａ）に示すように、継鉄部鋼板３０の内周縁には、歯部鋼板４０の各鋼板歯４１の歯元４２形状と対応する係止溝３２が多数形成されている。すなわち、各係止溝３２の両側縁は、入口から奥に向かって（すなわち継鉄部鋼板３０の半径方向外方に向かって）広がるテーパ状に形成してある。 On the other hand, as shown in FIG. 4 and FIG. 6A, a number of locking grooves 32 corresponding to the shape of the tooth base 42 of each steel plate tooth 41 of the tooth steel plate 40 are formed on the inner peripheral edge of the yoke steel plate 30. Has been. That is, both side edges of each locking groove 32 are formed in a tapered shape that extends from the entrance to the back (that is, outward in the radial direction of the yoke steel plate 30).

このような歯部鋼板４０を芯出ししながら、かつ、各鋼板歯４１および各切り欠き４５が通るように角度調整しながら所要枚数積層したうえ、例えば円周方向に数カ所選んだ切り欠き４５内に全枚数を通じて溶接を施すことで、歯部鋼板４０全体を一体化する。これにより、すべての歯（ティース）１４Ｔが一体化された一体歯（ティース）１４が構成される。 While centering such a toothed steel plate 40 and adjusting the angle so that each steel plate tooth 41 and each notch 45 pass, the required number of layers are laminated and, for example, in the notch 45 selected at several locations in the circumferential direction. The entire toothed steel plate 40 is integrated by welding all the sheets. Thereby, the integral tooth | gear (teeth) 14 with which all the teeth (teeth) 14T were integrated is comprised.

そして、この一体歯（ティース）１４の各スロット１５に固定子コイル１６を巻きながら収容し、適宜の仕上げ処理をすることで、固定子コイル付き歯（ティース）１４Ｃが完成することとなる（図７参照）。 Then, the stator coil 16 is housed while being wound around each slot 15 of the integrated tooth (tooth) 14 and subjected to an appropriate finishing process, whereby the tooth (tooth) 14C with the stator coil is completed (see FIG. 7).

このとき、積層されて列状に構成される各歯（ティース）１４Ｔは、円形の連結部４４から放射状に形成されるから、各スロット１５は底部（歯先４３側）に比べて入口部（歯元４２側）の方が断面積が広い。そのため、固定子コイル１６を各スロット１５に挿入する際、断面積の広い入口部（歯元４２側）から作業が行えるので、固定子コイル１６の挿入・組立が容易である利点がある。 At this time, each tooth (teeth) 14T stacked and arranged in a row is formed radially from the circular connecting portion 44, so that each slot 15 has an inlet portion (on the tooth tip 43 side) ( The tooth root 42 side) has a larger cross-sectional area. Therefore, when the stator coil 16 is inserted into each slot 15, the work can be performed from the entrance section (tooth base 42 side) having a large cross-sectional area, and thus there is an advantage that the stator coil 16 can be easily inserted and assembled.

また、各歯（ティース）１４Ｔの歯元４２はテーパ状に広がっているため、各スロット１５に挿入された固定子コイル１６がスロット１５から外方へ浮いてくることを抑制することができる利点がある。 In addition, since the tooth base 42 of each tooth (tooth) 14T expands in a tapered shape, the advantage that the stator coil 16 inserted in each slot 15 can be prevented from floating outward from the slot 15 is obtained. There is.

さらに、例えば図７に示すように、テーパ状の押え部材４９を各歯（ティース）１４Ｔの適宜箇所に嵌合しておくことで、継鉄（ヨーク）１３に組み付けられるまでの間、固定子コイル付き歯（ティース）１４Ｃのすべてのスロット１５内の固定子コイル１６が半径方向外方へ浮いてくることを確実に防止できる利点がある。この押え部材４９の長さは、積層されて列状に構成される各歯（ティース）１４Ｔの長さ（図７で紙面と直交する方向の長さ）に比べて遙かに短いものでよい。 Further, for example, as shown in FIG. 7, the taper-shaped pressing member 49 is fitted to an appropriate portion of each tooth (teeth) 14 T, so that the stator is assembled until the yoke (yoke) 13 is assembled. There is an advantage that the stator coils 16 in all the slots 15 of the teeth 14C with coils can be reliably prevented from floating outward in the radial direction. The length of the pressing member 49 may be much shorter than the length of each tooth (tooth) 14T that is stacked and arranged in a row (the length in the direction perpendicular to the paper surface in FIG. 7). .

そのため、上記のようにして一体化した継鉄（ヨーク）１３に、上記のようにして一体化した固定子コイル付き歯（ティース）１４Ｃを、軸心を揃えて組み付けたうえ、両端に押え板１７を配し、通し孔１８に図示しないボルトを通して一体化することで、固定子１０が構成されることとなる（図２参照）。 Therefore, the stator coil 14 integrated with the stator coil 14 is integrated with the yoke 13 integrated as described above, with the shafts aligned and the presser plates at both ends. The stator 10 is configured by arranging 17 and integrating the through hole 18 with a bolt (not shown) (see FIG. 2).

すなわち、一体化した継鉄（ヨーク）１３に、一体化した固定子コイル付き歯（ティース）１４Ｃを組み付けるには、積層された歯部鋼板４０の各歯４１の歯元端に向かって広がるテーパ状の歯元４２形状を、積層された継鉄部鋼板３０の入口から奥に向かって広がるテーパ状の多数の係止溝３２に嵌め込むだけで、固定子鉄心１２を組み立てることができ、しかもこのとき、歯部鋼板４０の各歯４１に巻かれた固定子コイル１６は、各歯４１の歯元端に向かって広がるテーパ状の歯元４２形状によって、歯部鋼板４０の半径方向外方への浮き上がり傾向を抑制されるから、比較的簡単な作業で固定子１０の組み立てを行うことができる。 That is, in order to assemble the integrated stator coil teeth (teeth) 14C to the integrated yoke (yoke) 13, the taper spreads toward the root end of each tooth 41 of the laminated tooth steel plate 40. The stator core 12 can be assembled simply by fitting the shape of the tooth 42 into a large number of tapered locking grooves 32 extending from the entrance of the laminated yoke steel plate 30 toward the back. At this time, the stator coil 16 wound around each tooth 41 of the tooth steel plate 40 is radially outward of the tooth steel plate 40 due to the tapered tooth shape 42 extending toward the tooth root end of each tooth 41. Therefore, the stator 10 can be assembled by a relatively simple operation.

また、このとき、継鉄（ヨーク）１３の内周縁に形成された多数のテーパ状の係止溝３２に、固定子コイル付き歯（ティース）１４Ｃの外周縁に形成された多数のテーパ状の歯元４２が、固定子鉄心１２の軸線に沿って嵌め込まれていくことで、それまで固定子コイル１６の浮き上がりを抑えていた押え部材４９は、継鉄（ヨーク）１３に押されて歯元４２に沿って摺動していき、最後に歯元４２から抜け落ちる。 At this time, a large number of tapered locking grooves 32 formed on the inner peripheral edge of the yoke (yoke) 13 have a large number of tapered shapes formed on the outer peripheral edge of the teeth (teeth) 14C with the stator coil. Since the tooth base 42 is fitted along the axis of the stator core 12, the presser member 49 that has suppressed the stator coil 16 from being lifted up to that point is pressed by the yoke 13 and the tooth base is pressed. It slides along 42 and finally falls off from the tooth base 42.

そのため、継鉄（ヨーク）１３への固定子コイル付き歯（ティース）１４Ｃの組み付けが終了する瞬間まで、押え部材４９による固定子コイル１６の浮き上がり抑止機能は持続する。 For this reason, the function of preventing the stator coil 16 from being lifted by the pressing member 49 continues until the end of the assembly of the teeth (tooth) 14C with the stator coil to the yoke (yoke) 13.

このようにして組み立て終わった固定子１０に、図示しない回転子を組み込んで同期機（同期電動機）１を作製すると、各歯（ティース）１４Ｔが、回転子の周面に固着した永久磁石に吸引されて継鉄（ヨーク）１３に対して半径方向内側へ変位しようとする。 When a synchronous machine (synchronous motor) 1 is manufactured by incorporating a rotor (not shown) into the stator 10 which has been assembled in this way, each tooth (tooth) 14T is attracted to a permanent magnet fixed to the peripheral surface of the rotor. As a result, it tries to move radially inward with respect to the yoke 13.

しかし、継鉄（ヨーク）１３の内周縁に形成された多数のテーパ状の係止溝３２に、各歯（ティース）１４Ｔのテーパ状に形成された歯元４２が嵌合しているため、また、各歯（ティース）１４Ｔが歯部鋼板４０ごとに連結部４４を介して円形に連なっているため、このような半径方向内側への変位を確実に防止することができる利点がある。 However, since the tooth base 42 formed in the tapered shape of each tooth (tooth) 14T is fitted in the numerous tapered locking grooves 32 formed in the inner peripheral edge of the yoke (yoke) 13, Further, since each tooth (tooth) 14T is connected in a circular shape via the connecting portion 44 for each tooth steel plate 40, there is an advantage that such a displacement inward in the radial direction can be reliably prevented.

上記のようにして構成された同期機（同期電動機）１は、運転にともなって自己発熱する。しかし、固定子鉄心１２の外側表面に多数の突起５０が形成されているため、これら多数の突起５０によって固定子鉄心１２の外側表面積を大幅に拡大することができる。これにより、実質的な体積増加を伴わずに高い放熱効率を達成することができる。 The synchronous machine (synchronous motor) 1 configured as described above self-heats during operation. However, since the many protrusions 50 are formed on the outer surface of the stator core 12, the outer surface area of the stator core 12 can be greatly increased by the many protrusions 50. As a result, high heat dissipation efficiency can be achieved without substantial increase in volume.

図８は、継鉄部鋼板の他の例を示す図であり、この継鉄部鋼板１３０は、互いに平行な２辺にのみ複数の突片１３５が形成され、他の２辺は外周縁１３１のままであるため、これ１種類だけで足りるものである。 FIG. 8 is a view showing another example of the yoke steel plate. In the yoke steel plate 130, a plurality of projecting pieces 135 are formed only on two sides parallel to each other, and the other two sides are outer edges 131. Therefore, only one type is sufficient.

すなわち、継鉄部鋼板１３０を所定枚数ごとに９０°向きを変えて積層することで、重ね合わされた所定枚数分の突片１３５により構成される所要厚さの突起５０を、固定子鉄心１２の外側表面に多数形成することができる。 That is, by stacking the yoke part steel plates 130 by changing the direction by 90 ° for each predetermined number of sheets, the protrusion 50 having a required thickness constituted by the predetermined number of stacked protrusions 135 is formed on the stator core 12. Many can be formed on the outer surface.

この継鉄部鋼板１３０の場合も、係止溝１３２は、上記の係止溝３２と同様に両側縁が入口から奥に向かって広がるテーパ状に形成してあり、歯部鋼板４０の各鋼板歯４１の歯元４２形状と対応している。 Also in the case of the yoke steel plate 130, the locking groove 132 is formed in a tapered shape in which both side edges widen from the entrance toward the back in the same manner as the locking groove 32 described above. This corresponds to the shape of the tooth base 42 of the tooth 41.

図９は、継鉄部鋼板のさらに他の例を示す図であり、この継鉄部鋼板２３０は、比較的大型の同期機（同期電動機）１に対応するため、１枚ではなく複数（図示の例では４枚）の鋼板片２３０Ｐに分割したものである。 FIG. 9 is a diagram showing still another example of the yoke steel plate. Since the yoke steel plate 230 corresponds to a relatively large synchronous machine (synchronous motor) 1, a plurality (not shown) In this example, it is divided into four steel plate pieces 230P.

なお、図４（ｂ）に示す継鉄部鋼板３０Ｂを例にして図示してあるが、図４（ａ）に示す継鉄部鋼板３０Ａおよび図８に示す継鉄部鋼板１３０についても、比較的大型の同期機（同期電動機）１に対応させる場合は、１枚ではなく複数（例えば４枚または２枚）の鋼板片に分割することができる。 4B is an example of the yoke steel plate 30B. However, the yoke steel plate 30A shown in FIG. 4A and the yoke steel plate 130 shown in FIG. 8 are also compared. When it is made to correspond to a large-sized synchronous machine (synchronous motor) 1, it can be divided into a plurality of (for example, four or two) steel plate pieces instead of one.

この鋼板片２３０Ｐは、４枚を組み合わせて１枚の継鉄部鋼板２３０を構成するものであり、各鋼板片２３０Ｐどうしの接合部を、先端に向かってテーパ状に広がる係止突片２３７と、入口から奥に向かってテーパ状に広がる係止溝２３８とによる接合構造としてある。 This steel plate piece 230P constitutes one yoke steel plate 230 by combining four pieces, and a joining projection between the steel plate pieces 230P and a locking projection piece 237 extending in a tapered shape toward the tip. The joining structure is formed by a locking groove 238 that tapers from the entrance toward the back.

このように複数に分割された鋼板片２３０Ｐを１枚の継鉄部鋼板２３０として組み付けるには、例えば、継鉄部鋼板２３０の内接円と同径のドラムと、継鉄部鋼板２３０の孔２３８に通すポストとを直立させて備えた組み付け治具を用いて、ポストに鋼板片２３０Ｐの孔２３８を通して内接円をドラムの周面に沿わせながら落とし入れることで、容易に組み付けることが可能である。 In order to assemble the steel piece 230P divided into a plurality of pieces in this manner as one yoke steel plate 230, for example, a drum having the same diameter as the inscribed circle of the yoke steel plate 230, and a hole in the yoke steel plate 230 are used. It is possible to easily assemble by using an assembling jig that has an upright post through 238 and dropping the inscribed circle along the peripheral surface of the drum through the hole 238 of the steel plate piece 230P into the post. It is.

しかも、この組み付け治具を用いることで、継鉄部鋼板２３０の積層も容易に実現することができる。 Moreover, lamination of the yoke steel plate 230 can be easily realized by using this assembling jig.

図１０は、この発明による同期機の他の実施の形態に用いる継鉄部鋼板を示す一部省略した平面図、図１１は、図１０の継鉄部鋼板を用いた同期機を一部破断にして示す側面図（平面図も同様）である。 10 is a partially omitted plan view showing a yoke steel plate used in another embodiment of the synchronous machine according to the present invention, and FIG. 11 is a partially cutaway view of the synchronous machine using the yoke steel plate of FIG. FIG. 2 is a side view (the same applies to a plan view).

図１０に示すように、この継鉄部鋼板３３０は、互いに平行な２辺Ａに形成された複数の突片３３５および突片３３５間の間隔と、これと直交する２辺Ｂに形成された突片３３５間の間隔および複数の突片３３５とが、それぞれ対応する位置に配置されたものである。 As shown in FIG. 10, the yoke steel plate 330 is formed on a plurality of projecting pieces 335 formed on two sides A parallel to each other, an interval between the projecting pieces 335, and two sides B orthogonal thereto. The intervals between the projecting pieces 335 and the plurality of projecting pieces 335 are respectively arranged at corresponding positions.

そのため、このような継鉄部鋼板３３０を所定枚数ごとに、図１０（ａ）に示す角度と図１０（ｂ）に示す角度とに９０°ずつ向きを変えて積層することで、重ね合わされた所定枚数分の突片３３５により構成される所要厚さの突起３５０を、図１１に示すように、固定子鉄心３１２（固定子３１０）の外側表面に、千鳥格子状に配置することができる。 Therefore, such a yoke part steel plate 330 was stacked by changing the direction by 90 ° between the angle shown in FIG. 10A and the angle shown in FIG. As shown in FIG. 11, the protrusions 350 having a required thickness constituted by the predetermined number of protrusions 335 can be arranged on the outer surface of the stator core 312 (stator 310) in a staggered pattern. .

このように配置された突起３５０の場合は、図１、図２に示すように配置された突起５０に比べて表面積が増えるため、放熱効率の一層の向上を図ることができる。 In the case of the protrusions 350 arranged in this way, the surface area is increased as compared with the protrusions 50 arranged as shown in FIGS. 1 and 2, so that the heat radiation efficiency can be further improved.

また、この継鉄部鋼板３３０の場合も、係止溝３３２は、上記の係止溝３２と同様に両側縁が入口から奥に向かって広がるテーパ状に形成してあり、歯部鋼板４０の各鋼板歯４１の歯元４２形状と対応している。 Also, in the case of the yoke steel plate 330, the locking groove 332 is formed in a tapered shape in which both side edges widen from the entrance to the back in the same manner as the locking groove 32 described above. This corresponds to the shape of the tooth base 42 of each steel plate tooth 41.

この発明による同期機の一実施の形態を回転子を省略して示す概略的断面図である。1 is a schematic cross-sectional view showing an embodiment of a synchronous machine according to the present invention with a rotor omitted. 図１の同期機を一部破断にして示す側面図である。It is a side view which shows the synchronous machine of FIG. 1 partially broken. 図１の要部の拡大図である。It is an enlarged view of the principal part of FIG. ２種類の継鉄部鋼板を示す一部省略した平面図である。It is the top view which abbreviate | omitted partially which shows two types of yoke part steel plates. 歯部鋼板を示す一部省略した平面図である。It is the top view which abbreviate | omitted a part which shows a tooth | gear part steel plate. 継鉄部鋼板と歯部鋼板の要部の拡大図である。It is an enlarged view of the principal part of a yoke part steel plate and a tooth part steel plate. 押え部材による固定子コイルの浮き上がりを防止する説明図である。It is explanatory drawing which prevents the lift of the stator coil by a pressing member. 継鉄部鋼板の他の例を示す一部省略した平面図である。It is the top view which abbreviate | omitted partially which shows the other example of a yoke part steel plate. 継鉄部鋼板のさらに他の例を展開して示す一部省略した平面図である。It is the top view which abbreviate | omitted and showed the further another example of a yoke part steel plate. この発明による同期機の他の実施の形態に用いる継鉄部鋼板を示す一部省略した平面図である。It is the top view which abbreviate | omitted partially which shows the yoke part steel plate used for other embodiment of the synchronous machine by this invention. 図１０の継鉄部鋼板を用いた同期機を一部破断にして示す側面図である。It is a side view which shows the synchronous machine using the yoke part steel plate of FIG.

Explanation of symbols

１，３０１同期機（同期電動機）
１０，３１０固定子
１１空洞
１２，３１２固定子鉄心（磁気回路コア）
１３継鉄（ヨーク）
１４一体歯（ティース）
１４Ｔ歯（ティース）
１４Ｃ固定子コイル付き歯（ティース）
１５スロット
１６固定子コイル（電機子コイル）
１７押え板
１８通し孔
３０（３０Ａ，３０Ｂ），１３０，２３０，３３０継鉄部鋼板
３２，１３２，２３２，３３２係止溝
３５，１３５，２３５，３３５突片
４０歯部鋼板
４１鋼板歯
４２歯元
４３歯先
４４連結部
４５切り欠き
４９押え部材
５０，３５０突起
２３０Ｐ鋼板片
２３７係止突片
２３８係止溝 1,301 Synchronous machine (Synchronous motor)
10,310 Stator 11 Cavity 12,312 Stator core (magnetic circuit core)
13 yoke
14 Teeth
14T Teeth
14C Teeth with stator coils (teeth)
15 Slot 16 Stator coil (armature coil)
17 Presser plate 18 Through hole 30 (30A, 30B), 130, 230, 330 yoke steel plate 32, 132, 232, 332 locking groove 35, 135, 235, 335 projecting piece 40 tooth steel plate 41 steel plate tooth 42 tooth Base 43 Tooth tip 44 Connecting portion 45 Notch 49 Presser member 50, 350 Protrusion 230P Steel plate piece 237 Locking protrusion 238 Locking groove

Claims

In a synchronous machine equipped with a stator core composed of a large number of steel plates,
The steel plate is divided into a yoke steel plate and a tooth steel plate,
Forming both side edges of the tooth base of each tooth of the toothed steel plate into a tapered shape extending toward the tooth end;
In the inner peripheral edge of the yoke steel plate, a plurality of tapered locking grooves whose both side edges widen from the entrance to the back to lock the tooth base of each tooth of the tooth steel plate are formed. The steel plate is formed of a single steel plate in which the adjacent tooth tips of each tooth are connected in a circle through the connecting portion,
The stator coil is housed while winding the stator coil in each slot between the teeth, and the teeth with the stator coil are completed, and the teeth that are stacked and arranged in a row are radiated from a circular connecting portion. Each slot has a larger cross-sectional area at the inlet than at the bottom, and when the stator coil is inserted into each slot, the slot is formed from the wide inlet, and the tooth base of each tooth is tapered. The stator coil inserted in each slot is prevented from floating outward from the slot ,
The stator coil in all slots of the teeth with the stator coil is radially outward until the taper-shaped pressing member is fitted to appropriate positions of the teeth and assembled to the yoke steel plate. To prevent floating, the integrated yoke coil with integrated stator coil is assembled with the shaft center aligned, and presser plates are placed at both ends, and the through holes are By integrating through the bolts, the stator is configured, and in a number of tapered locking grooves formed on the inner peripheral edge of the yoke part steel plate, a large number of formed on the outer peripheral edge of the teeth with the stator coil Since the tapered tooth base is fitted along the axis of the stator core, the holding member that suppresses the lifting of the stator coil is pushed by the yoke steel plate and slides along the tooth base. Move to the end, and finally fall off from the tooth base, Stator until the moment in which the assembly of toothed coil is completed, the synchronous machine, characterized by comprising a suppression function of suppressing floating of the stator coil by the pressing member.

In a synchronous machine equipped with a stator core composed of a large number of steel plates,
The steel plate is divided into a yoke steel plate and a tooth steel plate,
Forming both side edges of the tooth base of each tooth of the toothed steel plate into a tapered shape extending toward the tooth end;
In the inner peripheral edge of the yoke steel plate, a plurality of tapered locking grooves whose both side edges widen from the entrance to the back to lock the tooth base of each tooth of the tooth steel plate are formed. The steel plate is formed of a single steel plate in which the adjacent tooth tips of each tooth are connected in a circle through the connecting portion,
The stator coil is housed while winding the stator coil in each slot between the teeth, and the teeth with the stator coil are completed, and the teeth that are stacked and arranged in a row are radiated from a circular connecting portion. Each slot has a larger cross-sectional area at the inlet than at the bottom, and when the stator coil is inserted into each slot, the slot is formed from the wide inlet, and the tooth base of each tooth is tapered. The stator coil inserted in each slot is prevented from floating outward from the slot, and a plurality of protruding pieces are formed at intervals on the outer peripheral edge of the yoke steel plate . ,
The stator coil in all slots of the teeth with the stator coil is radially outward until the taper-shaped pressing member is fitted to appropriate positions of the teeth and assembled to the yoke steel plate. To prevent floating, the integrated yoke coil with integrated stator coil is assembled with the shaft center aligned, and presser plates are placed at both ends, and the through holes are By integrating through the bolts, the stator is configured, and in a number of tapered locking grooves formed on the inner peripheral edge of the yoke part steel plate, a large number of formed on the outer peripheral edge of the teeth with the stator coil Since the tapered tooth base is fitted along the axis of the stator core, the holding member that suppresses the lifting of the stator coil is pushed by the yoke steel plate and slides along the tooth base. Move to the end, and finally fall off from the tooth base, Stator until the moment in which the assembly of toothed coil is completed, the synchronous machine, characterized by comprising a suppression function of suppressing floating of the stator coil by the pressing member.

When laminating the yoke steel sheet, it is necessary to configure the projecting pieces for the predetermined number of sheets to be stacked by alternately stacking the portions with and without the projecting pieces every predetermined number of sheets. A number of protrusions having a thickness are formed on the outer surface of the stator core, and the yoke steel plate is divided into a plurality of steel plate pieces along the direction around the center of the stator core, and the steel plate pieces are joined to each other. 3. The synchronous machine according to claim 2, wherein the portion has a joining structure formed by a locking protrusion that tapers toward the tip and a locking groove that tapers from the inlet to the back.