JPS59129405A - Core of winding part - Google Patents

Abstract

PURPOSE:To obtain a desired core simply by adding, mixing and processing and forming a fine amorphous magnetic material and a fine or liquefied adhesive electric insulator and/or a magnetic material made of the quality of materials except amorphism. CONSTITUTION:An amorphous magnetic material is formed to a fine shape, mixed with a powdered or granular phenol material and an adhesive resin material, entered into a die and heated, and solidified. These materials can also be molded without heating and pressing. According to the constitution, eddy- current loss in a core is inhibited, mechanical strength is high, and the core of a desired shape is obtained easily.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an iron core of a winding component, for example, an iron core incorporated into a transformer, choke coil, etc.

Recently, amorphous, which is an amorphous metal, has been developed, and it has become widely known that amorphous has excellent electromagnetic properties.

On the other hand, amorphous metals are often formed into thin plate shapes, but applications are being developed to produce fine amorphous metals such as powders and granules.

The object of the present invention is to propose an iron core for a winding component made of such a finely shaped amorphous material.

Therefore, the iron core according to the present invention is formed by processing and forming a mixture of a finely formed amorphous material and an electrically insulating material having adhesive properties in the form of a slender liquid. It is characterized by being formed by processing a mixture of a magnetic material other than amorphous and a fine or liquid adhesive electrical insulator.

Although ferrite cores are widely known as cores for conventional transformers, choke coils, etc., the core according to the present invention configured as described above has the following effects compared to this ferrite core.

(1) As is well known, the maximum magnetic flux density and magnetic permeability of amorphous are both high, about 10,000 to 15,000. When produced by mixing it with an electrical insulator as described above, the maximum magnetic flux density and magnetic permeability decrease, but the core has considerably superior magnetic properties compared to conventional ferrite cores.

(2) Since the fine amorphous material and the electrical insulator are mixed and formed by processing, the eddy current product in the iron core is suppressed.

(3) Amorphous has high mechanical strength. Therefore, by processing and forming a fine amorphous material by mixing it with an adhesive, it is possible to produce an iron core with excellent mechanical density, without the mechanical brittleness of conventional ferrite iron cores.

(4) Iron cores are easily produced by mixing fine amorphous materials and electrical insulators, placing them in a processing mold, and subjecting them to pressure heat treatment. In addition, as a means for forming the iron core using a processing die, it is also possible to perform only heat treatment or to form it at room temperature.

Alternatively, a fine amorphous material may be inserted into a processing mold, and an adhesive liquid serving as an electrical insulator may be injected into the processing mold afterwards.

(5) Since the amorphous material and the magnetic material, both of which are finely formed, are mixed and formed with a fine or liquid electric insulator, the magnetic properties can be determined depending on the amount of the materials to be mixed.

Next, examples of the present invention will be described.

FIG. 1 is a longitudinal cross-sectional view of a transformer equipped with an iron core according to the present invention.

The bobbin 3, coil 4, and terminal hinge 5 of this transformer were manufactured by known means, but the iron core 1.2 was formed by molding a mixture of finely divided amorphous material and electrical insulator. be.

In this embodiment, a powdered or granular plastic material was mixed with an amorphous material as an electrical insulator to form an iron core.

However, as the electric insulating material to be mixed, powdered, crushed granular phenolic materials or other suitable resin materials can be used. Furthermore, a liquid material such as an epoxy material may be used as the electrical insulator.

However, the electrical insulator mentioned above must have adhesive properties.

The above-mentioned iron core 1.2 is formed by putting a fine amorphous material and a plastic material into a processing mold, applying pressure and heating, and cutting the plastic material after solidifying and integrating with the amorphous material. be.

However, when mixing a liquid material such as an epoxy material as an electrical insulating material, it is not necessarily necessary to pressurize it, so the amorphous material and electrical insulating material are placed in a processing mold and heated to form an iron core in the same manner as above. can be formed.

Furthermore, the electrical insulator can be solidified at room temperature without applying pressure or heating after being placed in a processing mold.

Next, FIG. 2 is a longitudinal cross-sectional view of a choke coil equipped with an iron core according to the present invention, where 6 is an iron core, 7 is a bobbin, 8 is a coil, and 9 is a terminal pin. The bobbin 7, coil 8, and terminal pin 9 were manufactured by a known method, but the iron core 6 was manufactured in the same manner as the transformer iron core 1.2 described above.

On the other hand, the above-mentioned iron cores 1, 2 and 6 were formed by processing a mixture of a fine amorphous material and a fine or liquid electric insulator, but they were formed by processing a magnetic material such as a ferrite material or a silicon steel plate that was processed into a formless material into a powder. It can be mixed with the above-mentioned amorphous material and electrical insulator in the form of a shape or granules, and then formed into an iron core using a processing die in the same manner as described above. The core formed in this manner is advantageous in that the magnetic properties can be determined depending on the amount of the core materials mixed.

As described above, the iron core according to the present invention is a mixture of a finely divided amorphous material and a finely divided liquid adhesive electrical insulator, and also includes a finely divided amorphous material and a non-amorphous material. Because it is formed by processing a mixture of a magnetic material and a fine or liquid adhesive electrical insulator, it has excellent magnetic properties, high mechanical strength, and is easy to produce. Furthermore, since the core according to the present invention can be made into a desired shape depending on the shape of the processing die, the core shape is not limited to the shape shown in the above embodiment, but can be made into various shapes such as EI shape, pot shape, drum shape, etc. iron cores can be easily produced. Note that the iron core according to the present invention can be effectively used not only in transformers but also as iron cores in motors and the like.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional view of a transformer, and FIG. 2 is a longitudinal sectional view of a choke coil. 1.2...Iron core 3...Bobbin 4...Coil 5...Terminal pin 6...Iron core 7...Bobbin 8...Coil 9...Terminal pin Patent applicant Kijima Musen Co., Ltd. Company Figure 1 Figure 2 19-

Claims (2)

[Claims] (1) An iron core for a winding component formed by processing and forming a mixture of a fine amorphous material and a fine or liquid adhesive electrical insulator. (2) An iron core of a winding component formed by processing and forming a mixture of a finely formed amorphous material and a magnetic material other than amorphous, and a finely or liquid adhesive electric insulator.