JPS6011534B2 - Stator core of rotating electric machine - Google Patents
Stator core of rotating electric machineInfo
- Publication number
- JPS6011534B2 JPS6011534B2 JP53019654A JP1965478A JPS6011534B2 JP S6011534 B2 JPS6011534 B2 JP S6011534B2 JP 53019654 A JP53019654 A JP 53019654A JP 1965478 A JP1965478 A JP 1965478A JP S6011534 B2 JPS6011534 B2 JP S6011534B2
- Authority
- JP
- Japan
- Prior art keywords
- core
- stator core
- shape
- circular arc
- arc portion
- 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.)
- Expired
Links
Landscapes
- Punching Or Piercing (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Manufacture Of Motors, Generators (AREA)
Description
【発明の詳細な説明】
本発明は主として小形回転電気機械の固定子鉄心に係り
、特に材料の節約が可能となる形状の固定子鉄心に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates primarily to a stator core for a small rotating electrical machine, and more particularly to a stator core having a shape that allows for material savings.
小形回転電機においては、環状の固定子鉄心を円弧状の
ハウジングまたはエンドブラケットに競合させることに
より、固定子鉄心と回転電機のフレーム間の結合固着を
行っている。In small rotating electrical machines, the stator core and the frame of the rotating electrical machine are fixedly connected by making the annular stator core compete with an arcuate housing or end bracket.
このため、固定子鉄０の外周部には一点を中心とする少
なくとも３箇所以上の円弧部を必要とし、このもっとも
理想的な形状としては固定子鉄心の外周を円形にするこ
とである。しかし、このような形状にすると、鉄心を打
抜くための素材料が多くなり、材料の浪費になる。この
ため、一般的には、第１図に示すように、正方形又は矩
形の４個の角部を円弧で切り落す形状が広く採用されて
いる。For this reason, the outer periphery of the stator iron 0 requires at least three arcuate portions centered at one point, and the most ideal shape is for the outer periphery of the stator iron core to be circular. However, such a shape requires a large amount of material to punch out the core, resulting in wasted material. For this reason, as shown in FIG. 1, a square or rectangular shape in which four corners are cut off with circular arcs is generally used.
第１図に示す鉄心１において、６，７は外周直線部、５
は外周円弧部、３は鉄心内周、４はスロットである。こ
の鉄心は、第２図に示すように、通常一枚の帯状鉄板８
からプレスによる連続打抜きにより製作される。第２図
の斜線で示す部分２は抜き落とし部であり、また、鉄心
内周３の内側は回転子鉄心として用いられる。このよう
な鉄心は、直線部６，６又は７，７間の幅Ｗを小さく、
円弧部５の半径Ｒをできるだけ大きくすることが素材料
の使用量を減少させる方法である。しかしながら、この
ように幅Ｗをあまりに小さくすると、固定子銑Ｄの磁路
の形成上、４箇所の磁束密度の極端に高い部分Ａ，Ａ，
Ｂ，Ｂができ、この部分の鉄心の円環歪などで電磁騒音
が増大する原因となり、一定の限界値が存在した。本発
明は、上記の諸点に鑑み、磁束密度が極端に高くなる狭
い磁路を形成することなく、しかも素材料の節約を可動
とする形状の固定子鉄心を提供することを目的とする。In the iron core 1 shown in Fig. 1, 6 and 7 are outer peripheral straight parts;
3 is the inner circumference of the core, and 4 is a slot. As shown in Fig. 2, this iron core is usually made of one strip-shaped iron plate 8.
Manufactured by continuous punching using a press. A shaded portion 2 in FIG. 2 is a removed portion, and the inside of the core inner periphery 3 is used as a rotor core. Such an iron core has a small width W between the straight parts 6, 6 or 7, 7,
A method of reducing the amount of material used is to make the radius R of the arc portion 5 as large as possible. However, if the width W is made too small in this way, the formation of the magnetic path of the stator pig D will result in four extremely high magnetic flux density areas A, A,
B and B were formed, and the annular strain of the iron core in this part caused an increase in electromagnetic noise, and a certain limit value existed. In view of the above-mentioned points, an object of the present invention is to provide a stator core having a shape that allows for saving of materials without forming a narrow magnetic path in which the magnetic flux density becomes extremely high.
本発明は、１枚の帯状鉄板から２列以上に鉄心を打抜く
ことのできる鉄心形状となしたものであるが、鉄心の蓬
方向の幅の狭い部分をなるべく少なくし、しかも素材鋼
板としてなるべく幅の狭いものを使用可能とするために
、前記したように角部を円弧状に形成したものにおいて
、対向する１組の直線部のうち、少なくとも一方の直線
部の両端と円弧部とが交わる角部を、ほぼ広角のＶ字形
の形状に切欠き、かつ該切欠き部の直線部側の一辺は前
記円弧部と逆の円弧状をなすような形状としたことを特
徴とする。The present invention has an iron core shape that allows the core to be punched in two or more rows from one strip-shaped iron plate, but the narrow part of the iron core in the vertical direction is reduced as much as possible, and the material steel plate is used as much as possible. In order to make it possible to use a narrow width product, the corners are formed in an arc shape as described above, and the arc part intersects with both ends of at least one of a pair of opposing straight parts. The corner portion is cut out in a substantially wide-angle V-shape, and one side of the cutout portion on the straight side side is shaped like an arc opposite to the circular arc portion.
第３図は本発明による固定子鉄心の一実施例を示す図で
、１２は鉄心外周の直線部６と平行をなす直線部６ａの
両端と円弧部５ａ，５ｂとの角部に設けたほぼ広角のＶ
字形をなす切欠き部であり、その円弧部５ａ，５ｂ側の
辺９は直線部６ａと平行をなし、直線部６ａ側の辺１０
は、それぞれ円弧部５ａ，５ｂと逆向きでその半径が円
弧１３，１４に一致する円弧状をなす。FIG. 3 is a diagram showing an embodiment of the stator core according to the present invention, in which 12 is approximately the corner portion between both ends of the straight portion 6a parallel to the straight portion 6 on the outer periphery of the core and the circular arc portions 5a, 5b. Wide angle V
It is a notch part in the shape of a letter, and the side 9 on the side of the circular arc parts 5a and 5b is parallel to the straight part 6a, and the side 10 on the side of the straight part 6a is parallel to the straight part 6a.
are in the shape of a circular arc whose radius coincides with the circular arcs 13 and 14 in the opposite direction to the circular arc parts 5a and 5b, respectively.
この鉄′Ｄは、第４図に示すように、厚さ０．５〜１．
仇吻程度の一枚の帯状鉄板１５の２列打抜きにより製作
するもので、帯状鉄板１５の側辺１５ａ，１５ｂは前記
鉄心の一つの直線部６となり、直線部７は切離し線１６
に沿ってカッターで切断することによって形成される。As shown in FIG. 4, this iron'D has a thickness of 0.5 to 1.5 mm.
It is manufactured by punching two rows of a single strip-shaped iron plate 15 about the size of a nose, and the sides 15a and 15b of the strip-shaped iron plate 15 become the straight part 6 of one of the iron cores, and the straight part 7 forms the separation line 16.
It is formed by cutting along with a cutter.
また前記切欠き部１２を形成する辺９，１０は切離し線
１７に沿って切断することにより形成される。第４図か
らわかるように、帯状鉄板１５の左右に打抜きにより形
成される鉄心は、左右のものどうしが互いに入り込んだ
形で形成されるから、鋼板の幅Ｗ′は鉄心幅Ｗの２倍２
Ｗより小幅となる。Further, the sides 9 and 10 forming the cutout portion 12 are formed by cutting along the separation line 17. As can be seen from FIG. 4, the iron cores formed by punching on the left and right sides of the strip-shaped steel plate 15 are formed in such a way that the left and right ones are inserted into each other, so the width W' of the steel plate is twice the core width W.
The width is smaller than W.
第２図に示した従来の打抜き方式と第４図の打抜き方式
について、具体的な必要材料を比較すると、下記のとお
りである。このように、材料が従来方式に比べて約４．
２％節約しうる。A comparison of the specific materials required for the conventional punching method shown in FIG. 2 and the punching method shown in FIG. 4 is as follows. In this way, the material is about 4.
You can save 2%.
第５図はこの実施例における鉄心の打抜き工程の順序を
示す図で、帯状鉄板１５は×方向に鉄心幅だけ間欠送り
され、停止時に打抜きされる。FIG. 5 is a diagram showing the order of the core punching process in this embodiment, in which the band-shaped iron plate 15 is intermittently fed by the width of the core in the x direction, and is punched out when stopped.
斜線部は同時に打抜きされる部分を示しており、また、
イ，口，ハの線の部分が同時に切離される。なお、切欠
き部１２の長さは、これがあまり大きい場合は鉄Ｄの径
方の狭幅部１１の占める割合が大きくなり、反対に切欠
き部が小さすぎると、材料の節約の度合が小となるので
、この切欠き部の占める長さは、円弧部５ａの１／４〜
１′２崖度であることが好ましい。以上述べたように、
本発明による回転電機の固定子鉄心は、少なくとも一つ
の直線部と円弧部との間の角度を、逆円弧辺を含む広角
Ｖ字形に切欠いたものであり、１枚の帯状鉄板から２列
以上の打抜きにより製作可能であって、材料費の節約が
可能になることは勿論のこと、さらに第４図の破線ｙの
ように池列の鉄心との境界が直線として形成されるもの
に比べ、円弧部５ａ，６ｂの長さが長くなり、第１図に
示す従来の形状のものと比較し、円弧部の長さはそれほ
ど短縮されないので、回転電機のフレームに舷合固着す
る場合に支障を来たすことがない。The shaded area indicates the part to be punched out at the same time, and
The A, 口, and C lines are cut off at the same time. Note that if the length of the notch 12 is too large, the ratio of the radially narrow portion 11 of the iron D will increase; on the other hand, if the notch is too small, the degree of material savings will be small. Therefore, the length occupied by this notch is 1/4 to 1/4 of the arcuate portion 5a.
Preferably, the slope is 1'2. As mentioned above,
The stator core for a rotating electric machine according to the present invention has a wide-angle V-shape notched at least one straight section and an arcuate part including an inverted arcuate side, and has two or more rows cut out from one strip-like iron plate. It can be manufactured by punching, which not only saves material costs, but also makes it possible to save material costs compared to the case where the boundary between the pond row and the iron core is formed as a straight line, as shown by the broken line y in Fig. 4. The lengths of the arcuate portions 5a and 6b are longer than those of the conventional shape shown in Fig. 1, and the lengths of the arcuate portions are not so shortened as compared to the conventional shape shown in FIG. I never come.
また本発明の鉄心の切欠き部による狭幅部は円弧部およ
び直線部から次第に狭幅になる形状としたことにより、
磁束の通路の急変による磁束密度の急激な変化をする個
所もなく、切欠き部の占める長さと円弧部の１／４〜１
′窃蓬度におさえたことにより、第１図のＡおよびＢに
相当する部分よりも磁束の通路を抑制することがないの
で、回転電機に組込んだ場合の所定の磁束量を得るため
の所要超磁力の増加度合も小さく第１図に示したものと
同等の特性を得ることができる。なお、実施例では２列
打抜き‘こついて説明したが、本発明は３列打抜き以上
の打抜きを行うものについても適用可能であり、その場
合は、前記直線部６，６ａの両者の両端に切込み部を形
成した形状の鉄心を得ることになる。In addition, the narrow portion formed by the cutout portion of the iron core of the present invention has a shape that gradually becomes narrower from the circular arc portion and the straight portion.
There are no places where the magnetic flux density changes suddenly due to sudden changes in the magnetic flux path, and the length occupied by the notch is 1/4 to 1 of the arc.
'By suppressing the degree of interference, the path of magnetic flux is not suppressed more than in the parts corresponding to A and B in Figure 1, so it is possible to The degree of increase in the required supermagnetic force is also small, and characteristics equivalent to those shown in FIG. 1 can be obtained. Although the embodiments have been described with reference to two rows of punching, the present invention is also applicable to punching of three or more rows, and in that case, cuts may be made at both ends of the straight portions 6, 6a. This results in an iron core having a shape in which a portion is formed.
第１図は従来の固定子鉄心の形状を示す図、第２図はこ
の従来の鉄心を帯状鉄板から打抜く場合の素材と鉄心と
の関係を示す図、第３図は本発明による固定子鉄心の一
実施例を示す形状図、第４図は該鉄心を打抜く場合の素
材と鉄心との関係図、第５図は同じく該鉄心の打抜き工
程図である。
１・・・・・・固定子鉄心、２・・・・・・切落し部、
４・・…・スロット、５，５ａ・・・・・・円弧部、６
，６ａ，７．．．．．．直線部、９，１０・・・・・・
切欠き部の辺、１２・・・…切欠き、１３，１４・・・
・・・円弧、１５・・・・・・帯状鉄板、１６，１７・
・・・・・功離し線。
第１図
茅３図
第２図
多４図
多ｓ幻Figure 1 is a diagram showing the shape of a conventional stator core, Figure 2 is a diagram showing the relationship between the core and the material when punching this conventional core from a strip steel plate, and Figure 3 is a diagram showing the stator core according to the present invention. FIG. 4 is a diagram showing the shape of an embodiment of the iron core, FIG. 4 is a diagram showing the relationship between the material and the core when punching the core, and FIG. 5 is a diagram showing the punching process of the core. 1... Stator core, 2... Cut-off part,
4... Slot, 5, 5a... Arc part, 6
, 6a, 7. ．． ．． ．． ．． ．． Straight section, 9, 10...
Side of notch, 12... Notch, 13, 14...
...Circular arc, 15...Strip iron plate, 16,17.
...The line of separation. Figure 1, Figure 3, Figure 2, Figure 4, Figure 4, Fantasy.
Claims (1)
落した如き形状を有する回転電機の固定子鉄心を、帯状
鉄板から複数列打抜きにより製作されるものおいて、鉄
心外周の少なくとも１つの直線部の両端と円弧部とが交
わる角部を、ほぼ広角のＶ字形をなす形に切欠いた形状
とし、かつその切欠いた部分を形成する前記直線部側の
一辺は、該切欠き部が設けられる円弧部と逆向きの円弧
部に形成し、かつ該逆向きの円弧部は隣接する他列の鉄
心の外周円弧部に合致する形状を有することを特徴とす
る回転電機の固定子鉄心。1. In the case where the stator core of a rotating electrical machine is manufactured by punching multiple rows from a band-shaped iron plate, the stator core has a shape similar to that of a plate whose outer circumference is square or rectangular and the corners are cut off in an arc shape, and at least one part of the outer circumference of the core is The corner where both ends of the two linear parts intersect with the circular arc part is cut out to form an approximately wide-angle V-shape, and one side of the straight part forming the notched part is 1. A stator core for a rotating electrical machine, characterized in that the stator core is formed into a circular arc portion in the opposite direction to the provided circular arc portion, and the opposite circular arc portion has a shape that matches the outer circumferential arc portion of an adjacent iron core in another row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53019654A JPS6011534B2 (en) | 1978-02-24 | 1978-02-24 | Stator core of rotating electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53019654A JPS6011534B2 (en) | 1978-02-24 | 1978-02-24 | Stator core of rotating electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54113007A JPS54113007A (en) | 1979-09-04 |
| JPS6011534B2 true JPS6011534B2 (en) | 1985-03-26 |
Family
ID=12005224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53019654A Expired JPS6011534B2 (en) | 1978-02-24 | 1978-02-24 | Stator core of rotating electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6011534B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5653827A (en) * | 1979-10-08 | 1981-05-13 | Honda Eng Kk | Extracting method of approximately circular blank material |
| JPS5861322U (en) * | 1982-07-07 | 1983-04-25 | ホンダエンジニアリング株式会社 | Approximately circular blank material extraction device |
| FR2583593B1 (en) * | 1985-06-18 | 1989-06-16 | Dso Elprom | STATOR WITH FINS FOR AN ELECTRIC MACHINE. |
| JPS624851U (en) * | 1985-06-24 | 1987-01-13 | ||
| JPS6244039A (en) * | 1985-08-20 | 1987-02-26 | Sanyo Electric Co Ltd | Electric motor core |
| JP5593830B2 (en) * | 2010-05-18 | 2014-09-24 | 三菱電機株式会社 | STACKING CORE FOR LAMINATION, ROTARY ELECTRIC AND METHOD FOR PRODUCING STACKING CORE FOR LAMINATION |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5380503A (en) * | 1976-12-24 | 1978-07-17 | Sanyo Electric Co Ltd | Motor core punching |
| JPS5432921A (en) * | 1977-08-18 | 1979-03-10 | Philips Nv | Electromagnetically focusing vidicon and method of cancelling signal noise in same vidicon |
-
1978
- 1978-02-24 JP JP53019654A patent/JPS6011534B2/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5380503A (en) * | 1976-12-24 | 1978-07-17 | Sanyo Electric Co Ltd | Motor core punching |
| JPS5432921A (en) * | 1977-08-18 | 1979-03-10 | Philips Nv | Electromagnetically focusing vidicon and method of cancelling signal noise in same vidicon |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54113007A (en) | 1979-09-04 |
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