JPS5852807A - Electromagnetic device - Google Patents

Abstract

PURPOSE:To reduce loss in a small-sized electromagnetic device and contrive the device to be more compact, by alternately laminating a tabular material constituted by a tabular magnetic material having a high strength and an amorphous magnetic alloy. CONSTITUTION:Each of a yoke iron core 21 and an I-iron core 22 is formed by alternately laminating silicon steel plates 1 and amorphous metal thin plates 4. The flexibility of the amorphous metal is suppressed to facilitate caulking in assembly. It is to be noted that the steel plates and the amorphous metal thin plates can be formed into a winding iron core shape. Thereby, loss in an electromagnetic device is greatly reduced to improve the electrical characteristics. In addition, the strength thereof is supported by the silicon steel plates. Thereby, it is easy to manufacture the electromagnetic device, and it is possible to make the same more compact. Accordingly, an optimal electromagnetic device can be obtained.

Description

[Detailed description of the invention] The present invention relates to the configuration of magnetic bodies in electromagnetic devices.

Generally, the magnetic material applied to electromagnetic devices is silicon steel plate because of its magnetic resistance or permeability and reduction of tear flow loss. So-called laminated silicon steel plates are well known.

However, when the total magnetic flux required for the magnetic material is large, silicon steel plates require a considerably large cross-sectional area due to the limit of magnetic flux density. On the other hand, if the space occupied by the magnetic material to be punched is narrow due to design, the laminated silicon steel plate would have an excessive volume, causing problems.

The present invention has been made to overcome the drawbacks of conventional devices, and its purpose is to provide an optimal electromagnetic device that is relatively small.

FIG. 1 is a perspective view of a conventional device. 10 is a engraved iron core,
Both have an I-core and are made of laminated silicon steel plates 1. 3 is an excitation coil. The shape of the yoke 10 and the I-core addition is determined by the density of the magnetic flux generated by the ampere turns of the coil 8, and a considerable amount of space is required.

Therefore, the present invention is intended to apply an amorphous magnetic alloy made into a thin plate, such as an amalpha magnetic material.

By the way, compared to silicon steel plate, Amarua Ryo×magnetic material is
It has great advantages such as a magnetic resistance so-called iron loss of 1/3 to 1/4 and a high saturation magnetic flux density, making it an effective material for reducing loss and downsizing of small electromagnetic devices.

However, Amaru 7A metal has the disadvantage that it cannot be made into thick plates, for example, the thickness is limited to a few tens of thicknesses, so in order to obtain an iron core with a stacking thickness of several tens of millimeters, it is necessary to pile up hundreds to thousands of plates. M-mata-a! Since the rubber metal is flexible, there are problems with assembly and caulking methods, and the space factor is also poor.

FIG. 2 is a sectional view showing the principle of the invention.

In the drawings, the same reference numerals indicate the same or corresponding parts.

That is, in the present invention, a thin plate 4 made of Amaru 7 As metal is sandwiched between a normal iron core such as a silicon steel plate 1 in the shape of a sandwich inch,
These are laminated to form the iron core.

FIG. 3 is a perspective view of one embodiment of the present invention.

Both the copper core 21 and the I core n are constructed by alternately laminating silicon steel plates 1 and thin plates 4 of aluminum and arsenic metals.

By doing so, the flexibility of the Amaru 7A metal is suppressed and assembly and caulking are facilitated. Although not shown, it can also be formed into a wound core shape using a steel plate and an amalpha thin metal plate.

Thus, according to the present invention, as an electromagnetic device, it is possible to improve the electrical characteristics such that the loss is significantly reduced, and the device is supported by a silicon steel plate, is easy to manufacture, and is miniaturized, so that an optimal electromagnetic device can be obtained. It will be done.

[Brief explanation of the drawing]

#! FIG. 1 is a perspective view of a conventional device, FIG. 2 is a sectional view showing the principle of the present invention, and FIG. 3 is a perspective view of an embodiment of the present invention. 1-Silicon iron plate, 3-Coil, 4-Amorphous magnetic alloy such as Amal 7A thin plate made of magnetic material, 10--Solid iron core of conventional device, 20--Conventional device! Iron core, 11 - 4 - evening iron core that will become the invention, 21 - ■ iron core that will become the invention. Applicant's agent Kiyoshi Inomata Engraving of the drawing (no change in content) tth 3rd court procedure amendment (method) Commissioner of the Japan Patent Office Shima 1) Showa No. 1 March 1999 1) Haruki Tono 1, Indication of the case Showa Group year patent application No. 1512322, name of invention electromagnetic device3, person making amendment Patent applicant related to case6, number of inventions made by amendment7, subject of amendment

Claims (1)

[Claims] 1. An electromagnetic device characterized by alternately laminating plate-like materials made of a strong plate-like magnetic material and an amorphous magnetic alloy. 2. The electromagnetic device according to claim 1, characterized in that a wound core is formed by overlapping strip-shaped materials made of a strong strip-shaped magnetic material and an amorphous magnetic alloy. & The electromagnetic device according to claim 1 or 2, characterized in that a thin material made of a silicon steel plate and an amalgamated metal is laminated.