JP2561979Y2 - Chip inductor - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a chip inductor having a large current capacity used for a circuit component of an electronic device.

[0002]

2. Description of the Related Art Conventionally, this kind of chip inductor is shown in FIG.
As shown in FIG.
After connecting the air-core coil (hereinafter referred to as coil) 3 of the lead terminal 8 by Installing welding or soldering 9, wrapped coil 3 by the high I磁 resistant material of the resin and kneaded relative permeability, compacted
And had form shape by bending and along the terminal 7 by cutting the terminal 7 from the frame 6 in the magnetic material <br/>.

[0003]

However, in the conventional chip inductor having the structure shown in FIG. 4, when the capacity of the current flowing through the coil is large, the value of the inductance is quickly saturated, and there is a limit to the use as an inductor. There was a problem.

[0004] The present invention is obtained by a structure in which the voids in the inside diameter portion of the coil to eliminate these drawbacks, the chip without the value of the inductance is changed even superposition current of the DC flowing in the coil is present An object is to provide an inductor.

[0005]

SUMMARY OF THE INVENTION A chip inductor according to the present invention is provided with a coil made by winding a wire whose surface is electrically insulated, and a coil formed inside a frame arranged in parallel in advance, two terminals on each side. A resin terminal block is provided in the coil mounting recess with a non-magnetic spacer to be inserted in close contact with the inner diameter of the coil, the spacer is inserted into the inner diameter of the coil, and the coil is fitted into the coil mounting recess. the lead terminal was welded or soldered to the terminal, a coil and a terminal integrally wrapped scan spacers of high specific
The magnetic powder having a magnetic permeability compacting a resin and kneaded magnetic material, Ru der those in close contact by folding along the green compact of the magnetic material is cut pin.

That is, according to the present invention , a terminal block having terminals is provided with an air core.
Fix the coil and connect the lead end of the air core coil to the terminal
A part of the terminal, the air-core coil and
A chip inductor in which the terminal block is sealed with a resin containing a magnetic material , wherein a chip made of a non-magnetic material inserted into the inner diameter of the air core coil is provided integrally with the terminal block. It is.

[0007]

[Action] In the chip inductor of the present invention, the non-magnetic for forming a gap so as not to saturate even larger value of the current flowing through the coil on the inner diameter side of the coil superposition electric <br/> flow direct current flows
Since the spacers are inserted, the DC to the coil current is heavy
Even tatami to flow, the value of the magnetic resistance due to voids is large Ri Na,
That the value of the inductance change significantly from not name. Although the magnetic field generated in the coil is proportional to the number of turns of the coil, the value of the inductance is proportional to the square of the number of turns. Therefore, the number of turns of the coil may be increased by reducing the value of the inductance by providing a gap.

[0008]

1 is an external perspective view of a chip inductor according to the present invention , and FIG. 2 is an exploded perspective view of the chip inductor according to the present invention.
FIG. 3 is a sectional view of the chip inductor according to the present invention. In FIG. 2, a terminal 7 previously formed on a frame 6
The terminal block 5 made of an electrically insulating material of the resin molded article is provided,
At the center of the terminal block 5, the same material as the terminal block 5 is integrally formed.
The coil mounting recess 10 is provided, further provided a spacer 4 for air gap formed on this. Performed with welding or soldering the lead terminal 8 to the terminal 7 at the center of the coil 3 videos coil 3 to the coil mounting recesses 10 of the terminal block 5 to guide the spacer 4, the coil 3 and the terminal block 5 and the terminal 7, Has high relative magnetic permeability
The magnetic powder was wrapped compacted by the magnetic material 1 and a resin and kneaded (see FIG. 1), cut from the cutting line 11, bent gel along the terminal 7 on the molding surface of the magnetic material. Therefore, in the chip inductor according to the present invention made as described above, since the gap made of the non-magnetic material by the spacer 4 is formed at the center of the coil 3 as shown in FIG. 3, the current capacity of the current flowing through the coil is large. It will not be saturated even.

[0009]

Chip inductor according to above-described as the present invention, according to the invention] is Re Tei equivalently provided a gap a non-magnetic spacer to the center of the coil Runode, immediately Nagarekasane tatami characteristics Yu Tei
You . Also, the spacer is provided integrally with the terminal block.
In addition, it is easy to assemble and the mounting position is stable.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a chip inductor according to the present invention.

FIG. 2 is an exploded perspective view of the chip inductor according to the present invention.

FIG. 3 is a cross-sectional view of the chip inductor according to the present invention.

[4] The assembled intermediate state of a conventional switch Ppuindakuta shown
To a perspective view.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Magnetic material 2 , 7 terminal 3 ( Air core ) coil 4 Spacer 5 Terminal block 6 Frame 8 Lead terminal 9 Solder 10 Coil mounting recess 11 Cutting line

Claims (1)

(57) [Scope of request for utility model registration] 1. An air-core coil is fixed to a terminal block having terminals.
And electrically connecting the lead terminal of the air-core coil to the terminal.
A part of the terminal, the air-core coil and the terminal block
In the chip inductor sealed with a resin containing a magnetic material, wherein the terminal block integrally, chip inductor, characterized in that a spacer made of non-magnetic material to be inserted into the inner diameter of the air core coil.