JPH0541533Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a split magnetic core for noise removal used in electronic circuits and the like.

[Conventional technology]

FIG. 2 is a perspective view showing a conventional noise removing magnetic core. In the figure, reference numeral 1 denotes a magnetic core body formed in a cylindrical shape, and a through hole 3 through which wiring 2 passes is provided inside.

This magnetic core is used as a line filter in an electronic circuit or the like, and is attached to the circuit with the wiring 2 passed through the through hole 3 in advance. By attaching this magnetic core, noise superimposed on the wiring 2 can be removed.

Furthermore, recently, it has been proposed to divide the magnetic core body 1 into a plurality of pieces. This is because when changing the position or size of the magnetic core in order to improve the noise removal effect, if the core is integrated, the circuit wiring must be rearranged each time, which results in poor workability. By making the magnetic core split in this way, the position and size of the magnetic core can be changed without recombining the wiring, and the noise removal characteristics can be improved.

[The problem that the idea aims to solve]

However, when the magnetic core body is divided as described above, they are attached integrally using fixtures, but the thickness of the attachment part is smaller than the other parts due to the grooves. There was a problem that the noise removal characteristics deteriorated.

This idea was made to solve these problems, and it provides a split magnetic core that can be installed freely without recombining the circuit wiring, and does not degrade the noise removal characteristics. It is intended to.

[Means to solve the problem]

The split-type magnetic core of this invention has a magnetic core body with a through-hole for wiring inside, which is divided into multiple parts so that they can be integrally attached using a fixture, and the parts held by the fixture are made to protrude outside. The thickness of the mounting part is equal to or greater than that of other parts.

[Effect]

In the split-type magnetic core of this invention, the thickness of the part where the fixing device is attached to the main body of the magnetic core, which is divided into multiple parts, is equal to or greater than other parts, so the characteristics do not deteriorate and the position of the magnetic core is and size can be changed without recombining the wiring.

〔Example〕

FIG. 1 is a sectional view showing an embodiment of this invention. In the figure, 1 is the magnetic core body, with wiring 2 inside.
The through hole 3 is divided into a plurality of pieces (in this case, two pieces). Each of the divided parts is attached integrally by a fixture 4, and the thickness of the attached part is equal to or greater than that of the other parts. That is, the portion held by the fixture is made to protrude outward.

In the magnetic core configured in this way, the magnetic core body 1 is divided in the direction in which the wiring 2 penetrates, so that
It can be installed freely without recombining the circuit wiring, and the position and size of the magnetic core can be easily changed, making it easy to work. In addition, since there is no groove for holding the fixture 4 like in the past, the thickness of the mounting part,
In other words, the cross-sectional area is not locally small, but is equal to or larger than other parts. Therefore, the noise removal characteristics do not deteriorate.

The shape of the magnetic core body may be cylindrical or any polygonal cross-sectional shape, and there is no problem even if a plurality of wires are passed through the core body.

[Effect of idea]

As explained above, according to this invention, the magnetic core body is divided into multiple parts, and the part where the fixture is attached is made to have a thickness equal to or greater than the other parts, so the circuit wiring can be freely reassembled without having to rearrange it. It can be mounted, has good workability when changing the position or size of the magnetic core, and has the effect that the noise removal characteristics do not deteriorate at the part where the fixture is attached.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of this invention, and FIG. 2 is a perspective view showing a conventional magnetic core. 1...Magnetic core body, 2...Wiring, 3...Through hole,
4...Fixing tool. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] In a magnetic core that has a through hole for wiring inside, the core body is divided into a plurality of parts so that they can be integrally mounted using a fixture, and the part held by the fixture is made to protrude outward to reduce the thickness of the mounting part. A split type magnetic core characterized by having the same or higher than other parts.