JPH0722248A - Coil parts - Google Patents

Abstract

PURPOSE:To provide a coil parts excellent in assembling workability and economy having such core structure as realizing low loss, high efficiency and low leakage flux. CONSTITUTION:The coil parts comprises an I-type laminated core block 14 produced by laminating cores 12 having central gap 11 while sandwiching between substantially triangular I-type cores 10 having tapered faces 15 on the opposite sides, a pair of C-type laminated cores 16 having corresponding tapered faces at the opposite ends, and a coil 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to coil components such as transformers and choke coils used in various electronic devices.

[0002]

2. Description of the Related Art In recent years, coil components such as transformers and choke coils used in various electronic devices are required to have improved electrical characteristics such as low loss, low heat generation, high efficiency and low leakage flux in addition to being light, thin, short and small. ing. In this case, a structure having excellent productivity is required.

A choke coil will be described below as a typical example of conventional coil components. In FIG. 9, the coil 4 is attached to the E-shaped laminated iron core 3 having the central magnetic leg 2 set to be shorter than the outer magnetic leg 1, and the I-shaped laminate is brought into contact with the outer magnetic leg 1 of the E-shaped laminated iron core 3 and abutted against each other. It was composed of the iron core 5.

Further, as shown in FIG. 10, an I-shaped laminated iron core 7 having a spacer 6 in the central portion and a substantially triangular portion having tapered surfaces 8 on both sides of both ends, and a substantially triangular shape of the I-shaped laminated iron core 7. The coil 4 is composed of a pair of C-shaped laminated iron cores 9 that match one tapered surface 8 of the shape portion.

[0005]

However, in the configuration of FIG. 9 described above, the leakage flux is large, and it is necessary to anneal the iron core or attach a magnetic shield plate or the like as a countermeasure against the leakage flux, which is very uneconomical. Met.

As a countermeasure against the above problem, a structure as shown in FIG. 10 can realize low loss, low heat generation, high efficiency and low leakage flux, but the I-shaped laminated iron core 7 and the C-shaped laminated iron core 9 are dispersed or have a gap. There is a problem in that the characteristics are deteriorated, the characteristics vary greatly, and it is difficult to use.

The present invention is intended to solve the above problems, and has an iron core structure which realizes low loss, high efficiency, and low leakage flux, and has excellent workability during assembly and stable workability, quality, and economical efficiency. An object is to provide an excellent coil component.

[0008]

In order to achieve this object, the coil component of the present invention has an I-shaped core having a substantially triangular portion having tapered surfaces on both sides of both ends thereof. A pair of I-shaped laminated cores sandwiched by sandwiching an iron core having a gap in the center and a pair of tapered surfaces at both ends that match one tapered surface of the substantially triangular portion of the I-shaped laminated core. C-shaped laminated iron core
It is configured by a coil.

Further, a central portion of the C-shaped iron core is provided between the I-shaped laminated iron core having substantially triangular shaped portions at both ends and the C-shaped iron core which matches one tapered surface of the substantially triangular shaped portion of the I-shaped laminated iron core. In this structure, a pair of C-shaped laminated iron cores, which are laminated by sandwiching an iron core having a gap between them, and are made into a block, and a coil are used.

[0010]

With this structure, low loss, high efficiency, and low leakage flux are possible, and the I-type laminated core or C-type laminated core is made into a block to improve the dimensional accuracy of the gap and stabilize the reactance characteristics, and at the time of assembling the iron core. The workability of can be improved.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

First, FIGS. 1 and 2 will be described. Between the I-shaped cores 10 provided with the substantially triangular portions having the tapered surfaces 15 formed on both sides of both ends, a gap 1 is formed at the center of the I-shaped core 10.
1, an I-shaped laminated iron core 14 sandwiched by an iron core 12 provided with 1
A pair of Cs each having a tapered surface that matches one tapered surface 15 of the substantially triangular portion of the I-shaped laminated iron core 14 at both ends.
It is composed of a shaped laminated iron core 16 and a coil 17.

If the I-shaped iron core 10 and the iron core 12 are made into blocks immediately after being punched with a die by caulking 13, the dimensional accuracy of the I-shaped laminated iron core 14 is improved, and the gap 11 can be provided without a spacer. I-shaped laminated iron core 14
Welding may be considered in the block forming method, and the position and quantity are not particularly limited as long as they have a small influence on the characteristics and have high dimensional accuracy.

Further, in the I-shaped iron core 10, the gap 1
Since 1 is not provided, the reactance characteristic is deteriorated, but the dimensional accuracy of the blocked I-type laminated iron core 14 is improved, the variation of the reactance characteristic is reduced, and the workability of mounting the C-shaped laminated iron core 16 and the coil 17 is improved. It is very valuable because it can realize low leakage flux.

In FIG. 3, in order to make up for the deterioration of the reactance characteristic, a substantially triangular portion having tapered surfaces 15 on both sides of both ends is provided, and both ends are provided between I-shaped iron cores 19 having a thin cut 18 at the center. An iron core 12 having a substantially triangular portion having tapered surfaces 15 formed on both sides of the core 11 and having a gap 11 in the central portion is sandwiched and laminated, and the iron core 12 is blocked by caulking 13.
I-shaped laminated iron core 20, a pair of C-shaped laminated iron cores 16 each having a tapered surface formed on both ends thereof to match one tapered surface 15 of the substantially triangular portion of the I-shaped laminated iron core 20, and a coil 17, The smaller the A dimension is, the more desirable it is at a level that does not affect the strength of the shaped laminated core 20.

Further, FIGS. 4 and 5 show an iron core 2 in which a different gap 21 is provided in the central portion of the I-shaped iron core 10 in the I-shaped iron core 10.
It is composed of an I-shaped laminated iron core 23 in which 2 is sandwiched and laminated to form a block, which further improves the reactance characteristics.

FIG. 6 shows an I-shaped laminated iron core 24 having a substantially triangular portion having tapered surfaces 25 formed on both sides of both ends.
C-shaped iron core 2 in which tapered surfaces that match one tapered surface 25 of the substantially triangular portion of the I-shaped laminated iron core 24 are formed at both ends
An iron core 28 having a gap 27 in the central portion of a C-shaped iron core 26 is sandwiched between 6 and laminated, and is composed of a pair of C-shaped laminated iron cores 30 and coils 31 which are blocked by caulking 29, for example. The structure is effective in preventing partial heat generation of the coil 31.

FIG. 7 is a C-shaped iron core having a thin notch 32 in the central portion which is fitted to one tapered surface 25 of the substantially triangular portion of the I-shaped laminated iron core 24 in order to improve the reactance characteristics in the configuration of FIG. It is composed of a pair of C-shaped laminated iron cores 34 which are formed by sandwiching an iron core 28 having a gap 27 in the central portion between 33 to form a block.

In order to improve the reactance characteristics, FIG. 8 also has a structure in which, in order to improve the reactance characteristics, iron cores 35 having different gaps 34 in the central portion of the C-shaped iron cores 26 are sandwiched and laminated to form a block. 3 shows a C-shaped laminated iron core 36.

[0020]

Since the coil component of the present invention is configured as described above, even if a gap is provided in the iron core to secure reactance, low loss, high efficiency, and low leakage flux can be realized, and a magnetic shield as a leakage flux countermeasure. It eliminates the need to attach a plate, etc. or to anneal the iron core, and has excellent characteristics and economy.

By using an I-shaped laminated iron core having a gap and blocked or a C-shaped laminated iron core having a gap and being blocked, there is no variation between the I-shaped laminated iron core and the C-shaped laminated iron core, which is stable. The characteristics are obtained, and the workability when assembling the iron core and the coil is also excellent.

Thus, it has many advantages such as low loss, high efficiency, low leakage flux, excellent workability in assembling an iron core and a coil, and a coil component excellent in quality and economy. Is of great value.

[Brief description of drawings]

FIG. 1 is a sectional view of a coil component showing an embodiment of the present invention.

FIG. 2 is a side view of the I-shaped laminated iron core of the same embodiment.

FIG. 3 is a sectional view of a coil component showing the other embodiment.

FIG. 4 is a sectional view of a coil component showing the other embodiment.

5A and 5B are a side view and a front view of the I-shaped laminated iron core in the same embodiment.

FIG. 6 is a sectional view of a coil component showing the other embodiment.

FIG. 7 is a sectional view of a coil component showing the other embodiment.

8A and 8B are a side view and a front view of a C-shaped laminated iron core in the same embodiment.

FIG. 9 is a sectional view showing a conventional coil component.

FIG. 10 is a sectional view showing another conventional coil component.

[Explanation of symbols]

 10 I-shaped iron core 11 Gap 12 Iron core 13 Caulking 14 I-shaped laminated iron core 15 Tapered surface 16 C-shaped laminated iron core 17 Coil

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiyuki Nishimura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (6)

[Claims] 1. An I-shaped core provided with a substantially triangular portion having tapered surfaces on both sides of both ends, and an iron core having a gap in the center of the I-shaped core is sandwiched and laminated to form a block.
A coil component comprising a shape-shaped laminated core, a pair of C-shaped laminated cores each having a tapered surface at both ends thereof that matches one tapered surface of the substantially triangular portion of the I-shaped laminated core, and a coil. 2. An iron core having a gap in the center of an I-shaped iron core having a substantially triangular portion at both ends and having a substantially triangular portion at both ends and having a narrowed central portion. The coil component according to claim 1, comprising an I-shaped laminated iron core laminated and formed into a block. 3. The coil component according to claim 1, which comprises an I-shaped laminated iron core in which iron cores having different gaps provided in the central portion of the I-shaped iron core are sandwiched and laminated to form a block between the I-shaped iron cores. 4. An I-shaped laminated iron core provided with tapered surfaces on both sides of both ends and having a substantially triangular portion, and a tapered surface that matches one tapered surface of the substantially triangular portion of the I-shaped laminated iron core at both ends. A coil component composed of a pair of C-shaped laminated iron cores and a coil in which a core provided with a gap in the central portion of the C-shaped iron core is sandwiched between the C-shaped iron cores provided in the above-mentioned C-shaped iron core to form a block. 5. A C-shaped core having a narrow central portion that matches one tapered surface of a substantially triangular portion of an I-shaped laminated iron core.
The coil component according to claim 4, comprising a pair of C-shaped laminated cores, which are formed by sandwiching an iron core having a gap in the central portion of the shaped core and sandwiching the core to form a block. 6. The coil component according to claim 4, comprising a pair of C-shaped laminated iron cores which are sandwiched by sandwiching iron cores having different gaps provided at the center of the C-shaped iron cores between the C-shaped iron cores.