JPH06251954A - Coil component - Google Patents

Abstract

PURPOSE:To provide a coil component, with which workability when assembling, the vibration, beat sound and strength of a core can be improved, which will be used for various kinds of electric machines. CONSTITUTION:The coil component is composed of an I-shaped laminated core 8 having almost two rectangular ends and the two rectangular tips are connected by welding 7, and a C-type laminated core 11, having a tapered face 10 and corresponding to the triangular tapered face 9 on both ends of the I-shaped laminated core 8 provided inside the edge of the magnetic legs on both sides, and a coil 12 attached to the I-shaped laminated core 8. According to the above- mentioned constitution, a coil component having improved workability in assembling operation, improved vibration, beat sound and mechanical strength, can be obtained.

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 have been used by being incorporated in video equipment, audio equipment, home appliances and office equipment.

A transformer will be described below as a typical example of conventional coil components. In FIG. 5, an I-shaped laminated iron core 1 having both ends formed in a substantially triangular shape and a triangular shape of both ends of the I-shaped laminated iron core 1 disposed on both sides of the I-shaped laminated iron core 1 inside both ends of the magnetic legs. Taper surface 2
C-shaped laminated iron core 4 provided with a tapered surface 3 conforming to
Then, the coil was attached to the I-shaped laminated iron core 1 and was composed of the coil 5. Assembling with such a structure, as shown in FIG. 6, a butt portion of the I-shaped laminated iron core 1 and the C-shaped laminated iron core 4 was joined by welding 6 to form a transformer.

[0004]

However, in the above configuration, as shown in FIG. 5, the I-shaped laminated iron core 1 is easily dislocated, the coil 6 is difficult to mount, and the C-shaped laminated iron core 4 is easily dissociated. However, there is a problem that it is difficult to match the tapered surfaces 3 of the C-shaped laminated iron core 4 with the triangular tapered surfaces 2 of both ends of the I-shaped laminated iron core 1.

The present invention solves the above problems and provides a coil component in which the workability at the time of assembly is improved by joining the substantially triangular tips of both ends of the I-shaped laminated iron core by welding. To aim.

[0006]

In order to achieve this object, a coil component of the present invention is an I type in which both ends, on which a coil is mounted, are formed in a substantially triangular shape and the tips of the substantially triangular shape are joined by welding. It is composed of a laminated iron core and a C-shaped laminated iron core which is arranged on both sides of the I-shaped laminated iron core and has tapered surfaces inside the ends of the magnetic legs on both sides to match the triangular tapered surfaces of both ends of the I-shaped laminated iron core. It is a thing.

Further, the I-shaped laminated iron core and the I-shaped iron core
Formed on both sides of the shape-shaped laminated core, inside the ends of the magnetic legs on both sides, tapered surfaces matching the triangular tapered surfaces on both ends of the I-shaped laminated iron core are provided, and at least one portion is welded and joined to the C-shaped laminated core. It is composed.

[0008]

In this structure, since the ends of the I-shaped laminated iron core having a low magnetic flux density are joined by welding the substantially triangular tips, the I-shaped laminated iron core can be made into a block without impairing the characteristics of the iron core and vibration of the iron core can be prevented. It also reduces and prevents beats.

Similarly, in the C-shaped laminated iron core, the outer surface having a low magnetic flux density and the tip of the outer surface are joined by welding, so that the C-shaped laminated iron core can be made into a block without damaging the characteristics of the iron core and vibration of the iron core can be prevented. It also reduces and prevents beats.

[0010]

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

First, FIG. 1 will be described. Both ends are formed in a substantially triangular shape, and the triangular tip ends are joined by welding 7 to form an I-shaped laminated iron core 8 and I inside the ends of the magnetic legs arranged on both sides of the I-shaped laminated iron core 8. A C-shaped laminated iron core 11 provided with tapered surfaces 10 matching the triangular tapered surfaces 9 at both ends of the shaped laminated iron core 8;
The coil 12 is attached to the I-shaped laminated iron core 8. With such a magnetic circuit configuration, the number of iron cores increases to three, which requires labor for assembling, but is extremely advantageous in terms of leakage flux.

That is, the I-shaped laminated iron core 8 and the two C-shaped laminated iron cores 11 form a closed magnetic circuit of a letter V shape. The abutting portions of the iron cores are tapered surfaces 9 and 1.
Since the magnetic gap is formed by the abutting portion in a form orthogonal to the magnetic flux flow of this closed magnetic circuit, and the magnetic gap is formed in a form inclined with respect to the magnetic flux flow. The leakage of magnetic flux can be significantly reduced, and it can sufficiently meet today's strict requirements as a countermeasure against noise.

In FIG. 2, welding 7 is performed at a position where both ends of the I-shaped laminated iron core 8 are slightly displaced from the tips of the substantially triangular tapered surfaces 9, and a C-shaped laminated iron core 11 is welded 13 and welded to the outside. Since at least one side surface is connected, the substantially triangular tapered surfaces 9 at both ends of the I-shaped laminated iron core 8 having the coil 12 mounted thereon can more easily match the tapered surfaces 10 of the C-shaped laminated iron core 11. It has a configuration that allows it.

Further, if the C-shaped laminated iron core 11 is joined and formed into a block by welding 13 and 14, the tip of the C-shaped laminated iron core 11 can be made flexible, and the taper surface 9 of the I-shaped laminated iron core 8 and the C-shaped laminated iron core 11 can be formed. Tapered surface 1 of laminated iron core 11
It is possible to match 0 by further adhering.

FIG. 3 shows that the tip end of the tapered surface 10 of the C-shaped laminated iron core 11 is joined by welding 15 to form a block of the C-shaped laminated iron core 11 and the coil 7 is attached to the welding 7 to form a substantially triangular shape at both ends. I in which the tip of the tapered surface 9 is joined
The structure matches the shape of the laminated iron core 8.

Further, the structure shown in FIG. 3 has the same shape in the finished product by welding as shown in FIG.

FIG. 4 shows a C-shaped laminated iron core 11 in which substantially the center portion of the inner surface is joined by welding 16, which has a structure in which the strength is higher than that of the weld 13 of the C-shaped laminated iron core 11 on the outer surface shown in FIG. .

[0018]

As described above, according to the present invention, the both ends of the I-shaped laminated iron core are formed in a substantially triangular shape, and the tip ends of the triangular shape are joined by welding. With a configuration including a C-shaped laminated iron core provided with tapered surfaces matching the triangular tapered surfaces at both ends of the I-shaped laminated iron core inside the ends of the magnetic legs on both sides, and a coil mounted on the I-shaped laminated iron core, The coil can be easily attached to the I-shaped laminated iron core, and the triangular tapered surfaces of both ends of the I-shaped laminated iron core and the tapered surfaces of the C-shaped laminated iron core can be accurately and easily matched to each other. It has excellent workability and strength during assembly.

In addition to the I-shaped laminated iron core, the C-shaped laminated iron core can also reduce vibration of the iron core and prevent beating because at least one portion is joined by welding, and the strength is also excellent.

Thus, it is possible to realize a coil component having excellent workability during assembly and vibration of the iron core, beat or strength.

[Brief description of drawings]

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

FIG. 2 is a perspective view of a coil component of another embodiment.

FIG. 3 is an exploded perspective view of a coil component of still another embodiment.

FIG. 4 is a perspective view of a coil component of still another embodiment.

FIG. 5 is an exploded perspective view of a conventional coil component.

FIG. 6 is a perspective view of the conventional coil component.

[Explanation of symbols]

 7 Welded part 8 I type laminated iron core 9,10 Tapered surface 11 C type laminated iron core 12 Coil

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

Claims (4)

[Claims] 1. An I-shaped laminated iron core whose both ends are formed in a substantially triangular shape and whose triangular tips are joined by welding, and inside the ends of the magnetic legs arranged on both sides of this I-shaped laminated iron core. A coil component comprising a C-shaped laminated iron core provided with tapered surfaces matching the triangular tapered surfaces at both ends of the I-shaped laminated iron core, and a coil mounted on the I-shaped laminated iron core. 2. The coil component according to claim 1, wherein at least one location on the outer surface of the C-shaped laminated iron core is joined by welding. 3. The coil component according to claim 1, wherein both ends of an outer surface of the C-shaped laminated iron core are joined by welding. 4. The coil component according to claim 1, wherein substantially the central portion of the inner surface of the C-shaped laminated iron core is joined by welding.