JPS6355921A - Amorphous magnetic alloy iron core - Google Patents

Abstract

PURPOSE:To increase the occupancy share of laminated layers for miniaturization of a laminated block by a method wherein cut-out amorphous magnetic alloy thin bodies are laminated so that one side in the width direction and other sides may be laminated half-and-half. CONSTITUTION:Amorphous cut-out magnetic alloy thin bodies 3 changing in thickness in the width direction are alternately laminated so that one side in the width direction and other sides 3a, 3b may share half-and-half to form a laminated block 2 with even surface without using any spacers at all. Through these procedures, the occupancy share of laminated layers of a laminated layer block 2 can be increased to miniaturize the block 2.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a transformer core constructed by laminating amorphous magnetic alloy ribbons, and improves the lamination space factor of the core and reduces the size of the core. The present invention relates to an iron core structure suitable for achieving

[Conventional technology]

Amorphous magnetic alloy ribbons are thin, and some materials have large thickness deviations in the soft direction.

In particular, there are materials that are thick at one end and taper to become thinner toward the other end. When such materials are stacked many times, the stacking thickness is dominated by the thicker plate, and the overall stacking space factor decreases. As a countermeasure to this problem, JP-A-59-40
A method as described in Japanese Patent No. 05 has been proposed.

[Problem that the invention seeks to solve]

The above-mentioned conventional technology is a method in which the materials are stacked up to a certain number and the gaps are filled while the thickness deviation increases. With this method, it is not possible to completely fill the voids and it is not possible to obtain a sufficiently high lamination space factor. In addition, it is necessary to separately provide a spacer to be inserted into the gap, which has the disadvantage of complicating the structure and process.

In addition, two or three sides of stacked iron cores are joined at the corner, but if the thickness of the material used for each side is not uniform, a gap will occur at the joint, and this gap will eventually expand to the entire stack. , the lamination space factor of the core as a whole decreases. In the prior art, consideration has not been given to improving the laminated space factor of the stacked iron core.

An object of the present invention is to provide an amorphous magnetic alloy core that improves the lamination space factor and achieves miniaturization.

[Means for solving problems]

Because amorphous magnetic alloy ribbons are thin, it is inefficient to stack them one by one when manufacturing a laminated core, so normally several to dozens of them are assembled into a laminated block. Stacked core work is performed as the smallest handling unit, and the purpose is to construct a laminated block so that the thicker and thinner sides of the material, which has a tapered thickness deviation in the width direction, are alternately adjacent to each other.・This can be achieved using a method of laminating.

That is, by making the thickness of the laminated blocks uniform in the width direction, the laminated space factor as a laminated core can be improved.

[Effect]

When working on a laminated core using a laminated block made by laminating multiple sheets of amorphous magnetic alloy ribbon as one unit, if there is a thickness deviation in the width direction of the laminated block, the apparent lamination thickness of the completed laminated core should be It is the thickest part that dominates. All parts with small plate thickness become wasteful voids 6. According to the present invention, a laminated block is created by alternately laminating thick pieces and small pieces of amorphous magnetic alloy ribbon material with thickness deviation in the width direction. By configuring this, the plate thickness deviations cancel each other out, and the resulting laminated block has a uniform plate thickness. In this way, by manufacturing a laminated core using laminated blocks with a small thickness deviation in the width direction as a unit, it is possible to manufacture a laminated core with a high lamination space factor.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, a laminated core 1 is constructed as a laminated body using a laminated block 2 of amorphous magnetic alloy ribbons 3 as a handling unit. Since each amorphous magnetic alloy thin strip 3 has a thin plate thickness of about 20 to 30 μm, it takes a lot of man-hours to laminate them one by one. Therefore, it is common to handle the block 2 as a stacked block 2, which is made up of several to several dozen stacked blocks.

FIG. 2 shows a view of the laminated block 2 shown in FIG. 1 in the direction ■--■. The amorphous magnetic alloy ribbon 3 is a material in which the thickness changes in a tapered manner from one end 3a in the width direction to the other end 3b, probably due to the conditions at the time of manufacturing the material. When manufacturing a laminated block by laminating several to dozens of such materials, if the thicker edges 3a of the plates are aligned and laminated, the resulting laminated block will also have one end thicker and the other end thinner. This results in a tapered shape, and when used as a stacked iron core, voids are created and the laminated space factor is reduced.

Therefore, as an embodiment of the present invention, one end 3a of the amorphous magnetic alloy ribbon 3 with a larger thickness and the end -@3b with a smaller thickness of the amorphous magnetic alloy ribbon 3 are
The laminated blocks 2 are made by arranging them alternately to form the laminated block 2. The laminated blocks 2 produced by this embodiment have a uniform plate thickness in the width direction, and the laminated core in which a large number of these laminated blocks 2 are laminated has a high lamination space factor. There is an effect that can be done.

As a modification of the above embodiment, as shown in FIG.

There is also a method in which a plurality of thick one ends 3a of the amorphous magnetic alloy ribbons 3 are laminated, and then a plurality of thin one ends 3b are laminated to make the thickness of the laminated block 2 uniform as a whole. It is possible, and this method can reduce the number of man-hours compared to the method of alternately laminating one sheet at a time.

In all of these embodiments, the number of amorphous magnetic alloy thin strips 3 (denoted as n) constituting one laminated block 2 is four, but n can range from several to more than ten, and even several tens. It is obvious that the present embodiment can be applied even when the number of sheets is small, and the larger the value of n, the greater the effect.

〔Effect of the invention〕

According to the present invention, it is possible to increase the lamination space factor of a stacked iron core constructed by laminating amorphous magnetic alloy ribbons, thereby making it possible to downsize the transformer core.

[Brief Description of the Drawings] Fig. 1 is a perspective view showing one embodiment of the present invention, and Fig. 2 is a perspective view showing an embodiment of the present invention.
FIG. 3 is a sectional view showing a modification of the present invention. DESCRIPTION OF SYMBOLS 1... Laminated iron core, 2... Laminated block, 3... Amorphous magnetic alloy ribbon, 3a, 3b... Ribbon end. , l '' Agent Patent attorney Elementary Jll M Manman 1 drawing (αn High 3rd drawing

Claims (1)

[Claims] 1. After cutting the amorphous magnetic alloy ribbon to a predetermined length, multiple sheets are laminated to form a laminate, and the laminate is treated as a unit of work and stacked to a predetermined shape and size. In the transformer core, one end of the laminate in the width direction is one of the two ends of the material before cutting of the plurality of amorphous magnetic alloy ribbons constituting the laminated body. An amorphous magnetic alloy electric iron core characterized by being laminated so that approximately half of one side and the other end are aligned.