Sht Corporation Limited

Other

Yasuomi Takahashi

Masafumi Inoue

Tsunetsugu Imanishi

Hitoshi Yoshimori

A method is described for cutting a plurality of molded cores. Each core includes an annular magnetic body made of a magnetic material and a covering part made of an insulating resin that covers the magnetic body. The method includes coupling each of the molded cores side by side in an axial direction, and cutting the molded cores at a first cutting part and at a second cutting part that transect an outer peripheral surface and an inner peripheral surface and approach each other toward an inner periphery direction of the molded core. The main body has a main body-side first end face formed by cutting at the first cutting part and a main body-side second end face formed by cutting at the second cutting part. A segment has a segment-side first end face formed by cutting at the first cutting part and a segment-side second end face formed by cutting at the second cutting part.

Method for cutting molded core used for coil component

The present invention provides a gapped core that facilitates adjustment of DC bias characteristics, has little variation in those characteristics, and also allows for excellent manufacturing efficiency. A gapped core () according to the present invention has a main body () and a segment () that are obtained by a molded core () including an annular magnetic body made of a magnetic material and a resin covering part that covers the magnetic body being cut at a first cutting part and a second cutting part that transect an outer peripheral surface and an inner peripheral surface and approach each other toward an inner periphery of the molded core, the main body () having a main body-side first end face formed by cutting at the first cutting part and a main body-side second end face formed by cutting at the second cutting part, and the segment () having a segment side first end face formed by cutting at the first cutting part and a segment-side second end face formed by cutting at the second cutting part, the segment being disposed in a cutout part () formed between the main body-side first end face and the main body-side second end face of the main body, and the main body-side first end face and the segment-side first end face and/or the main body-side second end face and the segment-side second end face opposing each other across a gap ().

Gapped core, coil component using same, and method for manufacturing coil component

Soft magnetic core piece for soft magnetic core assembly

In order to provide an air core coil fitting apparatus that can automatically fit an air core coil onto a core, an air core coil fitting apparatus includes a holding member, a coil fitting rod, a rod driving member, a pushing member, and a sending member. The holding member holds a core main body that is formed in a ring shape, has a gap extending through the core main body from an inner circumferential face to an outer circumferential face thereof, and allows an air core coil wound in advance to be fitted onto the core main body from one end thereof. On the coil fitting rod, the air core coil that is to be fitted onto the core main body held by the holding member is fitted. The rod driving member brings a front end of the coil fitting rod close to or into contact with the one end of the core main body held by the holding member. The pushing member pushes the air core coil fitted on the coil fitting rod, toward the one end of the core main body. The sending member is disposed at a circumferential edge of the core main body held by the holding member, and pulls the air core coil pushed by the pushing member and fitted onto the core main body, toward another end of the core main body.

Air core coil fitting apparatus

The present invention provides a common mode choke coil that has a higher coupling factor than that of a conventional common mode choke coil and that is easy to be assembled. A common mode choke coil according to the present invention includes a first coil portionand a second coil portionthat are connected to each other in series, and a third coil portionand a fourth coil portionthat are connected to each other in series. The first coil portionand the second coil portionare respectively disposed in the first quadrant and the third quadrant of an orthogonal coordinate system and housed in a first bobbinand the third coil portionand the fourth coil portionare respectively disposed in the fourth quadrant and the second quadrant of the orthogonal coordinate system and housed in a second bobbinThe first bobbinand the second bobbinare fitted to each other, and thereby adjacent case portions of the two bobbins are bonded to each other.

Growing community of inventors

Izumisano, Japan

Yasuomi Takahashi