JPS6127609A - Core for electromagnetic induction machine - Google Patents

Abstract

PURPOSE:To facilitate the assembling work of a core as well as to reduce an iron loss without making a scrap by a method wherein the lower yoke side is constituted by laminating a core material pieces one by one, and the upper yoke side is constituted by laminating set by set of a set consisting of a plurality core material pieces of almost same shape. CONSTITUTION:Core material pieces are cut in the order of (a), (b), (c), and (f) successively. Pertaining to the lamination work of the core material pieces, as a lamination pattern wherein a set of two core material pieces of the same shape and the same dimensions are repeatedly laminated at each position of the upper yoke is used, the laminating method same as that heretofore in use can be adopted. To be more precise, a set of core material pieces 4a and 4b of the upper yoke 4 which are cut at (a) and (b), a set of core material pieces 5a and 5b of the upper yoke 5, a set of core material pieces 4c and 4f of the upper yoke 4 which are cut at (c) and (f), and core material pieces 5c and 5f of the upper yoke 5 are laminated respectively. On the other hand, pertaining to the lower yokes 6 and 7, the core material pieces of the lower yoke 6 or 7 on the same position are differentiated in shape of each sheet in the direction of lamination. Thus, on the connecting parts of the outer leg 1 and the lower yoke 6, and the outer leg 2 and the lower yoke 7, a connecting method wherein core material pieces are overlapped one by one is used, and the iron loss at this part can be reduced.

Description

【発明の詳細な説明】 〔発明の技術分野〕 この発明は、変圧器などの電磁誘導機器鉄心に係シ、と
くに鉄損失を低減し、かつ鉄心の組立作業を容易にした
ものの構成に関するものである。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an iron core for electromagnetic induction equipment such as a transformer, and in particular to a structure that reduces iron loss and facilitates assembly of the iron core. be.

（従来技術〕 従来、この種の鉄心として第１図に示すものがあった。(Conventional technology) Conventionally, there has been an iron core of this type as shown in FIG.

図において、（１）及び（２）は外側脚鉄、（３）は中
央脚鉄、（４）及び（５）は上継鉄、（６）及び（７）
は下継鉄で、それぞれ所定の形状に切断された電気鉄板
からなる鉄心素片を積層して形成される。ここで、実線
は上層の鉄心素片を示し、点線はその他の層の上層と異
った部分を示す。また、（８λは各脚鉄（１）　（２）
　（３）に巻回された巻線である。第２図は第１図の電
、Ｗ１誘導機器鉄心の鉄心素片の切断方法の一例を示し
たもので、（ａ−Ｌ）、　（ａ−２）、　（ｆ−１）、
　（ｆ−２）と順次切断した後再び（ａ−１）、　（ａ
−２）、　（ｆ−１）、　（ｆ−２）と繰シ返し所定の
暦数切断し、第１図の各部の相当する位置に積層する。In the figure, (1) and (2) are outer leg irons, (3) are central leg irons, (4) and (5) are upper yoke irons, (6) and (7) are
is a lower yoke, which is formed by laminating core pieces made of electrical iron plates each cut into a predetermined shape. Here, the solid line indicates the upper layer of the iron core piece, and the dotted line indicates the portions of the other layers that are different from the upper layer. Also, (8λ is each leg iron (1) (2)
(3) is the winding wound around the wire. Figure 2 shows an example of how to cut the core pieces of the electrical and W1 induction equipment core shown in Figure 1, including (a-L), (a-2), (f-1),
(f-2) and then again (a-1), (a
-2), (f-1), and (f-2) are repeatedly cut for a predetermined number of times, and stacked at the corresponding positions of each part in FIG.

第３図は、これら第２図で切断した鉄心素片の積層手順
を示したもので、第２図の（−（）で切断された鉄心素
片を第３図の（ａ−１）Ｋ示す位置に積層し、次に第３
図の（ａ−１）の上層に第２図の（ａ２）で切断された
鉄心素片を第３図の（ａ−２）の位置に積層し、次に第
３図の（ａ２）の上層に第２図の（ｆ−１）で切断され
た鉄心素片を第３図の（ｆ−１）の位置に積層し、次に
第３図の（ｆ−１）の上層に第２図の（ｆ−ｚ　）で切
断された鉄心素片を第３図の（ｆ−２）の位置に積層し
、次に第３図の（ｆ−ｚ）の上層に第２図の（ａ−１）
で切断された鉄心素片を第３図の（ａｌ）の位置に積層
するという手順で繰り返し積層して第１図の電磁誘導機
器鉄心を形成する０ただし、第３図は脚鉄（１）、　（
２）　、　（３）　、継鉄（４）　、　（５）　。Figure 3 shows the procedure for stacking the core pieces cut in Figure 2. Stack them in the position shown, then the third layer.
The core pieces cut at (a2) in Figure 2 are stacked on the upper layer of (a-1) in Figure 3 at the position (a-2) in Figure 3, and then The core piece cut at (f-1) in Figure 2 is stacked on the upper layer at the position (f-1) in Figure 3, and then the second core piece is placed on the upper layer at (f-1) in Figure 3. The core pieces cut at (f-z) in the figure are stacked at the position (f-2) in Figure 3, and then (a) in Figure 2 is placed on top of (f-z) in Figure 3. -1)
The core pieces cut in step 1 are laminated in the position (al) in Figure 3 repeatedly to form the core of the electromagnetic induction equipment shown in Figure 1. However, Figure 3 shows the leg iron (1). , (
2), (3), yoke (4), (5).

（６）　、　（７）を構成する鉄心素片を同時に積層す
る図となっているが、外側脚鉄（１）と（２）、中央脚
鉄（３）には巻線（３）を装荷する必要があるため、上
継鉄（４）と（５）とを構成する鉄心素片は巻線（８）
の装荷が終了した後所定の位置に積層される。この積層
作業は、第２図の（ａ−１）と（ａ−２）とで切断した
上継鉄（４）の鉄心素片（４ａ）　２枚を１＃ｌ、上継
鉄（５）の鉄心素片（５ａ）２枚を１組、　（ｆ−ｘ）
と（ｆ−２）とで切断した上継鉄（４）の鉄心素片（４
ｆ）　２枚を１組、上継鉄（５）の鉄心素片（５ｆ）　
２枚を１組としてそれぞれ積層する。The diagram shows that the core pieces that make up (6) and (7) are laminated at the same time, but the outer leg irons (1) and (2) and the central leg iron (3) are loaded with the winding (3). Therefore, the core pieces that make up the upper yoke (4) and (5) are
After loading is completed, they are stacked in a predetermined position. In this lamination work, two core pieces (4a) of the upper yoke (4) cut at (a-1) and (a-2) in Fig. 2 are placed in 1#l, and the upper yoke (5) is A set of two iron core pieces (5a), (f-x)
Iron core piece (4) of upper yoke (4) cut at (f-2)
f) A set of two pieces, the core piece (5f) of the upper yoke (5)
The two sheets are stacked as one set.

この上継鉄（４Ｈ５）の鉄心素片の積層方法を示したの
が第４図で、第５図は第４図の上継鉄（４）　（５）の
正面図である。FIG. 4 shows the method of laminating the core pieces of this upper yoke (4H5), and FIG. 5 is a front view of the upper yoke (4) and (5) of FIG. 4.

片の切断時にスクラップが出す、上継鉄（４）　（５）
の鉄心素片の積層時に２枚１絹で積層ができるため、電
磁誘導機器鉄心の組立が容易という長所がある０しかし
、このような従来の方法で積層して電磁誘導機器鉄心を
形成した場合、第１図の外側脚鉄（１）と上継鉄（４）
及び外側脚鉄（２）と上継鉄（５）の接続する部分を第
１図のＶｌ−Ｖｌ線の断面を例にして第６図に示すよう
に、また第１図の外側脚鉄（１）と下継鉄（６）及び外
側脚鉄（２）と下縫鉄（７）の接続する部分を第１図の
■−■線の断面を例にして第７図に示すように、脚鉄（
１）（２）（３）とｌ−鉄（４）　（５）　（ａ）　（
７）の鉄心素片が互い違いに２枚１組で重なった状態で
接合されているためこの部分の鉄損失が著しく増加する
という欠点がある。これは、接合部においてリラクタン
スの大きい空間（→が発生するため、一方の層の鉄心素
片から他方の層の鉄心素片への磁束（′４の渡９が発生
し接合部の空間（Ａ）の付近に局部的に磁束が集中する
ことに起因している。重なυ接合部におけるこの欠点を
除去するため、第２図に示す切断方法において（ａｌ　
）を切断した後（ｆ−１）を切断し、再び（ａ−Ｌ）を
切断した後（ｆ−１）を切断する工程を繰シ返し所定の
暦数切断した後第１図の所定の位置積層する方法がある
。このｆＸ層方法は第３図の（ａ−２）、　（ｆ−２）
が力いため、第１図の外側脚鉄（１）と上継鉄（４）及
び外側脚鉄（２）と上継鉄（５）の接続する部分を第１
図のＶｌｌｌ　＝　Ｖｌｌｌ線の断面金側にして第８図
に示すように、また第１図の外側脚鉄（１）と下継鉄（
６）及び外側脚鉄（２）と下継鉄（７）の接続する部分
を第１図のＩＸ−ＩＸ線の断面を例にして第９図に示す
ように、脚鉄（１）　（２）　（３）と継鉄（４）（５
）　（６）（７）の鉄心素片が互い違いに１枚ごとに重
なった状態で接合されるため、一方の層の鉄心素片から
他方の層の鉄心素片への磁束（Ｂ）の渡シが第６図、第
７図の場合と比較して少々い。従って、接合部付近にお
ける局部的な磁束の集中は第６図、第７図の場合と比較
して少なくなる。そして、鉄損失の成分のうちヒステリ
シス損が磁束密度の１．６〜２．５９に、うず電流損が
磁束密度の２乗にそれぞれ比例するので、上記の磁束の
集中の緩和の結果、鉄損失は約３−低減する０しかし、
この積層方法は鉄損失が低減するという長劫はあるが、
鉄心の組立が困難であるとい−う欠点がある。Top yoke that produces scrap when cutting pieces (4) (5)
When laminating the core pieces, two pieces can be laminated one piece at a time, which has the advantage of making it easy to assemble the core for electromagnetic induction equipment. , outer leg iron (1) and upper yoke (4) in Fig. 1
The connecting part of the outer leg iron (2) and the upper yoke (5) is shown in FIG. 6 using the cross section taken along the line Vl-Vl in FIG. 1) and the lower yoke iron (6) and the outer leg iron (2) and the lower yoke iron (7) are connected as shown in Fig. 7 using the cross section of the line ■-■ in Fig. 1 as an example. Leg iron (
1) (2) (3) and l-iron (4) (5) (a) (
7) Since the core pieces are alternately joined in sets of two overlapping each other, there is a drawback that the iron loss in this part increases significantly. This is because a space (→) with large reluctance occurs at the joint, so a magnetic flux ('4 crossing 9) is generated from the core piece of one layer to the core piece of the other layer, and the space (A ) is caused by the local concentration of magnetic flux near the (al
), cut (f-1), cut (a-L) again, and then cut (f-1). After repeating the process for a predetermined number of cuts, There is a method of positional stacking. This fX layer method is shown in (a-2) and (f-2) in Figure 3.
is strong, so the connecting parts of the outer leg iron (1) and upper yoke (4) and the outer leg iron (2) and upper yoke (5) in Fig. 1 are
The cross section of the Vllll = Vllll line in the figure is shown in Figure 8, and the outer leg iron (1) and lower yoke (
6) and the connecting part of the outer leg iron (2) and the lower yoke iron (7), as shown in Fig. 9 using the cross section taken along line IX-IX in Fig. 1 as an example, the leg iron (1) (2 ) (3) and yoke (4) (5
) (6) Since the core pieces in (7) are joined in a staggered manner, overlapping each other, the magnetic flux (B) does not transfer from the core pieces in one layer to the core pieces in the other layer. The area is slightly smaller than that shown in Figures 6 and 7. Therefore, the local concentration of magnetic flux near the joint is reduced compared to the cases shown in FIGS. 6 and 7. Of the components of iron loss, hysteresis loss is proportional to 1.6 to 2.59 of the magnetic flux density, and eddy current loss is proportional to the square of the magnetic flux density, so as a result of the above relaxation of magnetic flux concentration, iron loss is about 3-0, but
Although this lamination method has a long history of reducing iron loss,
The drawback is that the iron core is difficult to assemble.

すなわち、巻線（８）の装荷か終了した後、上継鉄（４
）（５）の鉄心素片を積層する場合、一方の層とその次
−の層で鉄心素片の形状が異なるため、上継鉄（４）　
（５＞の鉄心素片を１枚づつ８層しなければならず、鉄
心の組立のための晴間が増加する。また、一般的に電気
鉄板の厚さは０．３５　ｍｍ以下であるため、接合のた
めの重なシの空間は０．３５　ｍｍ以下となシ、積層接
合作業は非常に困難でちる０このため、従来よシ鉄損失
が増加するという欠点はあるが、第３図のよちな同一′
形状の鉄心素片を２枚１糾で積層してなる節６図、駆り
図の裕合方法が採用されてきた。In other words, after loading the winding (8), the upper yoke (4) is loaded.
) When laminating the core pieces in (5), the shape of the core pieces is different between one layer and the next layer, so the upper yoke (4)
(It is necessary to form 8 layers of iron core pieces (5) one by one, which increases the clear space for assembling the iron core. Also, since the thickness of electrical iron plates is generally 0.35 mm or less, The overlapping space for joining is less than 0.35 mm, making laminated joining work extremely difficult.For this reason, although it has the disadvantage of increased iron loss compared to conventional methods, the method shown in Fig. 3 Yochina same'
The Node 6 diagram and Driving diagram welding methods, which are made by laminating two shaped iron core pieces one by one, have been adopted.

Ｌ発明の概要〕 この発明は上記のような従来の電磁誘導機器鉄心の欠点
を除去するためになされたもので、下継鉄側は鉄心素片
を１枚ごとに、上細鉄側はほぼ同一の形状の複数の鉄心
素片を組として１組ごとにそれぞれ積層できる構成とす
ることにょシ、スクラップを出すことなく、鉄心の組立
作業が容易で鉄損失を低減した電磁誘導機器鉄心を提供
することを目的としている。L Summary of the invention] This invention was made to eliminate the drawbacks of the conventional electromagnetic induction equipment iron core as described above. Provided is an electromagnetic induction equipment iron core that has a structure in which a plurality of core pieces of the same shape can be stacked together as a set, making it easy to assemble the iron core without producing scrap, and reducing iron loss. It is intended to.

Ｌ発明の実施例〕 近年、電磁誘導機器鉄心の製作技術の進歩はめざましく
、最近では外側脚鉄、中央脚鉄、下継鉄の積層作業は機
械化され切断と同時に第１図の上継鉄を除いた電磁誘導
機器鉄心が形成されるようになってきている。本発明は
、機械化による積層可能な外側脚鉄と下継鉄は接合部が
第９図のように１層ごとの重なり接合となるよう形状の
異なった鉄心素片を１枚ごとに交互に極層し、機械化に
よる積層が不可能な上組鉄は、外側脚鉄と上糺秩の接合
部が第６図に示すように同一形状の鉄心素片を２枚ある
いはそれ以上を１組として形状の異なる鉄心素片の組を
交互に存欝して形成した寛磁計導析器鉄心である。[Example of invention L] In recent years, the manufacturing technology of electromagnetic induction equipment iron cores has made remarkable progress.Recently, the lamination work of outer leg irons, central leg irons, and lower yoke irons has been mechanized, and the upper yoke shown in Fig. 1 can be laminated at the same time as cutting. Electromagnetic induction equipment cores are now being formed. In the present invention, the outer leg iron and the lower yoke iron, which can be laminated by mechanization, are made by alternately stacking iron core pieces of different shapes so that the joints are overlapped layer by layer as shown in Fig. 9. For over-assembled iron, which is layered and cannot be laminated by mechanization, the joint of the outer leg iron and the upper casing is made of two or more iron core pieces of the same shape as a set, as shown in Figure 6. This is a magnetometer analyzer core formed by alternately existing sets of different core pieces.

以下、この発明の一実施例を図について欽明する。第１
０図は本発明の電磁誘導機器鉄心の鉄心素片の切断方法
の一例を示したもので、（ａ）、（１））。An embodiment of the present invention will be explained below with reference to the drawings. 1st
Figure 0 shows an example of a method of cutting a core piece of an electromagnetic induction equipment core of the present invention, (a), (1)).

（ｃ）、　＜１りと順次切断した後再び（〜、（ｂ）、
（ｃ）、（→と繰シ褥し所定の層数切断する。第１１図
は、これら第１０図で切断した鉄心素片の和層手１−を
示したもので、第１０図の（ａ）で切断された鉄心素片
を第１１図の（→に示す位置に積木・シ、次に第１１図
の（ａ）の上層に第１０図の（匂で切断された鉄心素片
を第１１図の（ｂ）の位置に積層し、次に第１１図の（
→の上層に第１０図の（ｃｌで切断された鉄心素片を第
１１図の（ｃ）の位置に極層し、次に第１１図の（ｃ＋
の上層に第１０図（の（ｆ）で切断された鉄心素片を第
】】図の（：０の位置に積Ｊ脅し、次に第１１図の（ｆ
）の上層に第１０図の（ａ）で切断された鉄心素片を第
１１図の（ａ）の位置に積層するという手１町で繰９返
し８ａ層して第１図の爾研誘祷様器鉄心を形成する。た
だし、第１１図は脚鉄（１）、　（２）　＋　（３）　
、継鉄（４）　、　（５１、（６）　、　（７）を構成
する鉄心素片を同時に積層する図となっているが、外仙
゛脚鉄（１）と（２）、中央脚鉄（３）には巻ｍ　（８
）を装荷する必要があるため、従来と同様上継鉄（４）
と（５）を構成する鉄心素片は巻線（８）の装荷が終了
した後所定の位置に積層される。この私湘作業は、第１
１図の積層手順で示したように、上継鉄（４）　（５Ｃ
は各位置とも同一形状同一寸法の鉄心素片が２枚１組で
繰シ返す積層パターンとなるため、第４図と第５図に示
した従来と同一の上継鉄（４）　（５＞の積層方法が採
用できる〇すなわち、第１０図の（→と（ｂ）とで切断
した上継鉄（４）の鉄心素片（４ａ）と（４１：Ｉ）と
を１組、上継鉄（５）の鉄心素片（５ａ）と（５ｂ）と
を１１ｉＪ　、　（ｃ）と（ｆ）とで切断した上継鉄（
４）の鉄心素片（４ｃ）と（４ｆ）とを１ａ。(c), <1 and then again (~, (b),
(c), (→) and cut the predetermined number of layers. Figure 11 shows the sum layer 1- of the iron core pieces cut in Figure 10. Place the iron core pieces cut in a) in the position shown in Figure 11 (→), and then place the iron core pieces cut in Figure 10 in the upper layer of (a) in Figure 11. 11 (b), and then (
→ Lay the iron core piece cut at (cl) in Figure 10 on the top layer at the position (c) in Figure 11, then (c +
Place the iron core piece cut at (f) in Figure 10() on the upper layer of the
) The core pieces cut in (a) in Figure 10 are stacked in the position (a) in Figure 11 on top of the layer 8a in Figure 1. Form the prayer-like iron core. However, in Figure 11, the leg irons (1), (2) + (3)
, the core pieces constituting yoke (4), (51, (6), and (7)) are laminated at the same time. (3) has a volume m (8
), it is necessary to load the upper yoke (4) as before.
The core pieces constituting (5) and (5) are stacked at predetermined positions after loading of the winding (8) is completed. This private work is the first
As shown in the stacking procedure in Figure 1, the upper yoke (4) (5C
is a laminated pattern in which core pieces of the same shape and size are repeated in pairs at each position, so the same overlay iron as the conventional yoke (4) (5> 〇In other words, one set of core pieces (4a) and (41:I) of the upper yoke (4) cut at (→ and (b) in Fig. 10) are stacked together. (5) The upper yoke (
The iron core pieces (4c) and (4f) of 4) are 1a.

上継鉄（５）の鉄心素片（５ｃ）と（５ｆ）とを１組と
してそれぞれ積層する。一方、下継鉄（６）　（７）は
第３図で示した従来の方法と異カリ、第１１図で明らか
なように、同一位置の下継鉄（６）または（７）の鉄心
素片は順次積層の方向に１枚づつ形状が異なっている。The core pieces (5c) and (5f) of the upper yoke (5) are stacked as a set. On the other hand, the lower yoke (6) (7) is different from the conventional method shown in Fig. 3, and as is clear from Fig. 11, the iron core element of the lower yoke (6) or (7) in the same position is different from the conventional method shown in Fig. 3. Each piece has a different shape in the direction of lamination.

このように構成したので、外側脚鉄（１）と上継鉄（４
）及び外側脚鉄（２）と上継鉄（５）の接続する部分は
従来の第６図と同等の鉄心素片２枚づつの接続方法とな
シこの部分の鉄損失は従来の第３図の場合と同等である
が、外側脚鉄（１）と下継鉄（６）及び外側脚鉄（２）
と下継鉄（７）の接続する部分は従来の第９図と同等の
鉄心素片１枚ずつ重な多接合する接続方法となシ、この
部分の鉄損失は従来の第３図の場合と比較して低減する
。従って、電磁誘導機器鉄心全体で見れば約１．５％け
鉄損失低減となシ、電磁誘導機器鉄心の組立作業性を悪
くすることなく鉄損失の少ない電磁誘導機器鉄心を供給
できる。尚、本実施例では上継鉄（４）　（５）は同一
形状の鉄心素片２枚１組で積層する方法となっているが
、同一形状の鉄心素片３枚あるいはそれ以上の枚数を１
組として積層しても良い。例えば、上継鉄３枚１組で積
層する場合は第１０図の切断方法において（→の後に（
ａ）、　（Ｃ）の前に（ｆ）を追加し、積層手順は第Ｕ
図において（ｂ）の後に（ａ）　、　（ｃ）の前に（つ
を追加すれば良い。With this configuration, the outer leg iron (1) and the upper yoke iron (4)
) and the connecting part of the outer leg iron (2) and the upper yoke (5) are connected by two core pieces each, which is the same as the conventional method shown in Fig. 6.The iron loss in this part is the same as that of the conventional 3 Same as the case shown in the figure, but with outer leg iron (1), lower yoke iron (6), and outer leg iron (2).
The connecting part of the lower yoke and lower yoke (7) is the same as the conventional Fig. 9, in which the iron core pieces are overlapped one by one and multi-joined, and the iron loss in this part is the same as in the conventional Fig. 3. Reduce compared to. Therefore, in terms of the entire electromagnetic induction equipment core, the iron loss is reduced by about 1.5%, and the electromagnetic induction equipment iron core with low iron loss can be provided without impairing the assembly workability of the electromagnetic induction equipment iron core. In this example, the upper yoke (4) (5) is made by laminating a set of two core pieces of the same shape, but three or more core pieces of the same shape may be stacked together. 1
They may be stacked as a set. For example, when laminating a set of three upper yoke, use the cutting method shown in Figure 10 (after →).
Add (f) before a) and (C), and the stacking procedure is as shown in Section U.
In the figure, (a) should be added after (b) and (() should be added before (c).

ｉた、上記実施例の第１１図では同時に極層する１組の
鉄心素片例えば上継鉄（４）の鉄心素片（４ａ）と（４
ｂ）とをその形状長さ共に完全に同一とするため、それ
らと接続される外側脚鉄（１）の鉄心素片（１ａ）と（
１ｂ）との長さを変えている。しかし、第ν図の例えは
（ａ）と（ｄ）に示すように外側脚鉄（１）の鉄心素片
（１ａ）と（１ｄ）とをその形状長さ共に完全に同一と
し、上継鉄（４）の鉄心素片（４ａ）と（４ｄ）の長さ
を外側脚鉄（１）と上継鉄（４）の重なυ寸法分だけ異
なるようにすることもできる。この場合の上継鉄（４）
　（５）の鉄心素片の積層方法を第お図及びその正面図
の第１４図に示す。図において、例えば上継鉄（４）の
鉄心素片（４ｅ）と（４ｆ）とは上記の重カシ寸法分の
み長さが異っているが、形状はほぼ同一で、例えば図の
右端部でそろえることにより、第１の実施例で示した２
枚１糾で積層する方法が採用できる。このように構成し
たので、外側脚鉄（１）と上継鉄（４）及び外側脚鉄（
２）と上継鉄（５ンの接続する部分は従来の第８図と同
等の接続方法となシ、また外側脚鉄（１）と下継鉄（６
）及び外側脚鉄（２）と下継鉄（７）の接続する部分は
従来の第９図と同等の接続方法となシ、双方とも１枚ず
つの重な多接合となるため第１の実施例よシもさらに鉄
損失が低減する。従って、電磁誘導機器鉄心全体で見れ
ばほぼ約３％の鉄損失低減となυ、電磁誘導機器鉄心の
組立作業性を悪くすることなく鉄損失のよシ少ない電磁
誘導機器鉄心を提供できる。In addition, in FIG. 11 of the above embodiment, a set of core pieces (4a) and (4) of the upper yoke (4), for example, a pair of core pieces (4a) and (4)
b) are completely the same in shape and length, the iron core piece (1a) of the outer leg iron (1) connected to them and (
1b) and the length is changed. However, in the example of Fig. ν, the core pieces (1a) and (1d) of the outer leg iron (1) are completely the same in shape and length, as shown in (a) and (d), and the upper It is also possible to make the lengths of the iron core pieces (4a) and (4d) of the iron (4) different by the overlapped dimension υ of the outer leg iron (1) and the upper yoke iron (4). In this case, the upper yoke (4)
The method of laminating the core pieces (5) is shown in Fig. 14 and its front view, Fig. 14. In the figure, for example, the core pieces (4e) and (4f) of the upper yoke (4) differ in length by the above-mentioned heavy oak dimension, but their shapes are almost the same; for example, the right end of the figure By arranging 2 as shown in the first example,
A method of laminating one sheet at a time can be adopted. With this configuration, the outer leg iron (1), the upper yoke iron (4), and the outer leg iron (
2) and the upper yoke (5) are connected using the same connection method as the conventional figure 8, and the outer leg iron (1) and the lower yoke (6)
) and the outer leg iron (2) and the lower yoke iron (7) are connected using the same connection method as in the conventional Figure 9, and since both are made of one overlapping multi-joint, the first In both embodiments, the iron loss is further reduced. Therefore, when looking at the entire electromagnetic induction equipment core, the iron loss is reduced by approximately 3% υ, and it is possible to provide an electromagnetic induction equipment iron core with much less iron loss without impairing the assembly workability of the electromagnetic induction equipment iron core.

し発明の効果〕 以上のよう援この発明によれば、下継鉄は形状の異なる
鉄心Ｔ片を１枚ずつ交互に積層して構成）上継鉄はほぼ
同一形状の鉄心素片を２枚あるいはそれ以上を１組とし
て、形状の異なる鉄心素片の絹を交互に＃Ｆ層して構成
したので鉄損失が少なく、かつ鉄心の組立作業が容易と
なシ安価な電磁誘導機器鉄心が提供できる効果がある０[Effects of the Invention] As described above, according to the present invention, the lower yoke is made up of alternately laminated core T pieces of different shapes one by one, and the upper yoke is made up of two core pieces of almost the same shape. Or more than one set is constructed by alternately #F layers of silk core pieces with different shapes, so iron loss is small and the core assembly work is easy.A low-cost electromagnetic induction equipment core is provided. There is an effect that can be done0

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来の電磁誘導機器鉄心の一例を示す平面図、
第２図は第１図の電磁誘導機器鉄心を形成するための従
来の鉄心素片の切断パターンの一例を示す図、第３図は
第２図で切断された鉄心素片の積層手順を示す平面図、
第４図は上継鉄の鉄心素片を２枚１組で積層する積層方
法を示す平面図、第５図は第４図の上継鉄側から見た正
面図、第６図は外側脚鉄の鉄心素片と上継鉄の鉄心素片
とが２枚１組で接合している場合の第１図の■−■線の
断面図、第７図は外側脚鉄の鉄心素片と下継鉄の鉄心素
片とが２枚１粗で接合している場合の第１図の■−■線
の断面図、第８図は外側脚鉄の鉄心素片と上継鉄の鉄心
素片とが１枚ごとに接合している場合の第１図の■ｌＩ
−■１線の断面図、第９図は外側脚鉄の鉄心素片と下継
鉄の鉄心素片とが１枚ごとに接合している場合の第１図
のＩＸ−ＩＸ線の断面図、第１Ｏ図は本発明の一実施例
における電磁誘導機器鉄心の鉄心素片の切断パターンを
示す図、第１１図は第１Ｏ図で切断された鉄心素片の積
層手順を示す平面図、第し図は本発明の他の実施例にお
ける鉄心素片の積層手順を示す平面図である。 図中、（１１、（２）は外側脚鉄、（３）は中央脚鉄、
（４）。 （５）は上継鉄、（６）　、　＜’ｔ＞は下継鉄、（３
）は巻線である。 なお、図中同一符号は同−又は相当部分を示す。Figure 1 is a plan view showing an example of a conventional electromagnetic induction equipment iron core.
Figure 2 shows an example of a conventional cutting pattern for core pieces to form the core of the electromagnetic induction device shown in Figure 1, and Figure 3 shows the stacking procedure for the core pieces cut in Figure 2. Plan view,
Figure 4 is a plan view showing the lamination method of laminating the core pieces of the upper yoke in sets of two, Figure 5 is a front view seen from the upper yoke side of Figure 4, and Figure 6 is the outer leg. A sectional view taken along the ■-■ line in Figure 1 when the iron core piece and the upper yoke iron core piece are joined as a pair, and Figure 7 shows the iron core piece of the outer leg iron and the iron core piece of the outer leg iron. A cross-sectional view taken along the ■-■ line in Figure 1 when the core pieces of the lower yoke and the core piece of the upper yoke are joined together, and Figure 8 shows the iron core piece of the outer leg iron and the iron core piece of the upper yoke. ■lI in Figure 1 when the pieces are joined one by one
- ■ Cross-sectional view taken along line 1. Figure 9 is a cross-sectional view taken along line IX-IX in Figure 1 when the core pieces of the outer leg iron and the core pieces of the lower yoke are joined one by one. , FIG. 1O is a diagram showing the cutting pattern of the core pieces of the electromagnetic induction equipment core in one embodiment of the present invention, FIG. 11 is a plan view showing the lamination procedure of the core pieces cut in FIG. The figure below is a plan view showing a procedure for laminating iron core pieces in another embodiment of the present invention. In the figure, (11, (2) is the outer leg iron, (3) is the center leg iron,
(4). (5) is the upper yoke, (6), <'t> is the lower yoke, (3
) is a winding. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

【特許請求の範囲】[Claims] 鉄心素片を所定の層数積み重ねて、巻線が巻回される複
数の脚鉄とこの脚鉄の上下両端をそれぞれ相互に磁気的
に結合する上継鉄及び下継鉄とを構成するものにおいて
、上記脚鉄と上記下継鉄とは相互に形状の異なる上記鉄
心素片を１枚づつ交互に積み重ねて構成し、上記上継鉄
はほぼ同一の形状の複数の上記鉄心素片を重ねて鉄心素
片の組とし相互に形状の異なる上記鉄心素片の組を１組
づつ交互に積み重ねて構成したことを特徴とする電磁誘
導機器鉄心。A predetermined number of layers of iron core pieces are stacked to form a plurality of leg irons around which windings are wound, and an upper yoke and a lower yoke that magnetically couple the upper and lower ends of the leg irons, respectively. In the above, the leg iron and the lower yoke are constructed by alternately stacking the core pieces having different shapes one by one, and the upper yoke is made by stacking a plurality of the core pieces having substantially the same shape. 1. An iron core for electromagnetic induction equipment, characterized in that the sets of iron core pieces are made up of sets of iron core pieces, and the sets of the above-mentioned iron core pieces having mutually different shapes are stacked one on top of the other in turn.