JP2001148320A - Coil and magnetic circuit component using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coil in which confirmation of the number of turns is enabled simply and accurately when a plurality of thin wires are wound in parallel, and a magnetic circuit component using the coil. SOLUTION: In a coil in which a plurality of wires 21 is wound in parallel, constitution wherein one wire can be discriminated from the other wires by visual observation is used. For example, the coil is constituted by using one covered wire 22 with a mark and the other covered wire 23 without marks. In a magnetic circuit formed of a single layer parallel winding of the plurality of wires 21 around a core 20, the wires 21 are a magnetic circuit component using a coil composed of the covered wire 22 with the mark and the other covered wires 23 without marks. In this constitution, confirmation of winding is enabled accurately and simply and workability is improved only by counting the covered wire 22 with the mark when the number of wires 21 is large.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil and a magnetic circuit component using the coil, wherein the number of windings can be easily checked visually when a plurality of windings are wound in parallel and simultaneously. .

[0002]

2. Description of the Related Art In a stabilized power supply circuit as shown in FIG. 4, a choke coil in which a single winding 21 is wound around a core 20 as shown in FIG. 14 is used. For more information,
When the input power supply 10 is applied to the primary coil of the transformer 11, the switching element 19 is turned on / off by the duty ratio controlled by the PWM control circuit 18 and chopped. The AC voltage obtained in the coil is rectified and smoothed by the rectification and smoothing circuit 31 to supply a DC voltage to the load 16. The fluctuation of the output voltage is error-amplified by the error amplification circuit 17 and is fed back to the PWM control circuit 18 to be a stabilized voltage.

In such a stabilized power supply circuit, a rectifying and smoothing circuit 31 includes a rectifying diode 12, a commutation diode 13, a choke coil 14, and a capacitor 15,
In general, the choke coil 14 is configured by winding a single winding 21 around a toroidal core 20.

[0004] Further, as shown in FIG.
In the LC filter circuit 32 including the first winding 29, the second winding 30, and the core 20, the first winding 29
And the second winding 30 is wound only one layer. In addition, the shape of the core 20 is E, I, U
There are combinations of shapes and the like. Further, there is also an example in which a winding 21 is wound around an air core 20.

[0005]

In the case where the winding 21 is provided with a large current value, it is necessary to increase the step area of the copper wire constituting the winding 21. . Therefore, structurally, from the point of view of electrical characteristics, it is sufficient to use a thick copper wire corresponding to a large current value, but with a single thick copper wire, the copper wire is hard,
The workability of winding around the core 20 is poor, and since it does not bend at an acute angle, it does not adhere to the core 20 and has poor electrical characteristics and appearance.

Therefore, as shown in FIG. 3, workability and the like can be improved by winding a plurality of thin copper wires having a cross-sectional area corresponding to a thick copper wire in parallel. However, when winding multiple thin copper wires in parallel, when counting the number of turns, it is necessary to count the total number, then divide by the number of parallel wires to confirm the original number of turns. In particular, it is not only troublesome to count the total number of wires because the number of wires increases, but if there is a mistake in counting, when dividing by the number of There is a problem that unnecessarily troublesome work occurs.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a coil and a magnetic circuit component using the coil, wherein the number of turns can be easily and accurately checked when a plurality of thin windings are wound in parallel. And

[0008]

According to the present invention, there is provided a coil in which a plurality of windings are wound in parallel, wherein one of the windings can be visually distinguished from the rest. For example, it is constituted by one marked covered winding 22 and the remaining unmarked covered winding 23.

Further, the present invention provides a magnetic circuit comprising a plurality of windings 21 wound in a single layer on a core 20 in parallel.
The winding 21 is a magnetic circuit component using a coil, which is composed of one covered winding 22 with a mark and the remaining covered winding 23 without a mark.

With such a configuration, the winding 2
Even if the number of windings is increased, it is sufficient to count the covered windings 22 with the mark, and the number of windings can be confirmed accurately and easily, thereby improving workability.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 20 denotes a toroidal core. A plurality of, for example, three windings 21 are wound in parallel on the core 20 in a single layer. At this time, the three windings 21 are wound so as not to overlap each other at least at the outer peripheral portion of the core 20. Of these three windings 21, only one is a covered winding 22 with a mark, and the other two are covered windings 23 without a mark.

As shown in FIG. 1, the covered winding 22 with a mark may be colored in a different color from the covered winding 23 without a mark, or as shown in FIG. In other words, it is only necessary that the marked covered winding 22 can be clearly distinguished from the remaining unmarked covered winding 23 by visual inspection. To this end, only one unmarked covered winding 23 and the remaining covered winding 22 may be used.

The number of windings of the three windings 21 wound in this manner can be known by counting the covered windings 22 with marks.

In the above embodiment, one set of windings 21 is wound around the entire circumference of one core 20. However, the present invention is not limited to this. As shown in FIG. Winding 2
When the two windings 21 of the winding 9 and the second winding 30 are wound by half a turn, one of the first windings 29 has a coated winding 22 with a colored mark as shown in FIG. Using
The other first winding 29 is wound using a winding 21 having a marked covered winding 22 with a different mark, such as a winding having a marked covered winding 22 as shown in FIG. 2. To do. By doing so, the first winding 29
And the number of turns of the second winding 30 can be counted without mistake. In the case where three or more types of windings 21 are wound around the core 20, the windings may be wound with the positions of different markings or those having the two types of coated windings 22 with markings alternately shifted. You can also.

In the above embodiment, three windings 21 are wound around the core 20 in parallel and only one layer is wound at a time. However, windings 21 having different marks are prepared for each layer.
You may make it a multilayer winding, counting the number of windings one layer at a time.

In the above embodiment, the case where three windings 21 are wound in parallel is shown. However, the present invention is not limited to this, and two or even four or more windings are marked. What is necessary is just to be the covered winding 23 without a mark in the covering winding 22.

In the above-described embodiment, the core 20 has a cylindrical toroidal shape. However, the shape of the core 20 is not limited to this, and may be a combination of E-shape, I-shape and U-shape. Further, like a solenoid core, an air core 20
The winding 21 may be wound.

[0018]

According to the present invention, in a coil in which a plurality of windings 21 are wound in parallel, one of the windings 21 is provided.
The book can be visually distinguished from the rest, for example, since the winding 21 is composed of one marked covered winding 22 and the remaining unmarked covered winding 23, even if the number increases, It is only necessary to count the covered windings 22 with marks, the number of turns can be confirmed accurately and easily, and the workability is improved.

According to the present invention, a plurality of windings 21
In a magnetic circuit in which the windings 21 are wound in a single layer, and in a magnetic circuit in which a plurality of windings 21 are wound around the core 20 for each of a plurality of independent coils in a single layer, the windings 21 The number of windings can be accurately confirmed by configuring one covered winding 22 with a mark and the remaining covered winding 23 without a mark, or by having a different mark for each of a plurality of independent coils. It is simple and easy to work.

The present invention can be used even when the core 20 is made of a toroidal type, a combination of E-type, I-type, and U-type or an air core.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a magnetic circuit component using a coil according to the present invention.

FIG. 2 is a front view showing another embodiment of the magnetic circuit component using the coil according to the present invention.

FIG. 3 is a front view showing a magnetic circuit component using a conventional coil.

FIG. 4 is an electric circuit diagram showing an example in which a magnetic circuit component using a coil is used as an electric component in a stabilized power supply circuit.

FIG. 5 is an electric circuit diagram showing an example in which a magnetic circuit component using a coil is used as an electric component in a filter circuit.

[Explanation of symbols]

10 input power supply, 11 transformer, 12 rectifier diode, 13 commutation diode, 14 choke coil, 1
5: capacitor, 16: load, 17: error amplifier circuit, 1
8 PWM control circuit, 19 switching element, 20
Core, 21: winding, 22: covered winding with mark, 23: covered winding without mark, 24: input terminal, 25: input terminal, 2
6 output terminal, 27 output terminal, 28 capacitor, 2
9 first winding, 30 second winding, 31 rectifying and smoothing circuit,
32 ... Filter circuit.

Claims (5)

[Claims] 1. A coil in which a plurality of windings 21 are wound in parallel, wherein one of the windings 21 is
A coil characterized in that it can be visually distinguished from the rest. 2. In a coil in which a plurality of windings 21 are wound in parallel, said windings 21 are composed of one covered winding 22 with a mark and the remaining covered winding 23 without a mark. A coil. 3. A magnetic circuit in which a plurality of windings 21 are wound around a core 20 in one layer in parallel.
A magnetic circuit component using a coil, comprising: one covered winding 22 with a mark; and the remaining covered winding 23 without a mark. 4. In a magnetic circuit in which a plurality of windings 21 for each of a plurality of independent coils are wound around the core 20 in a single layer, the winding 21 is a single covered winding 2 with a mark.
2 and the remaining unmarked covered windings 23, and the marked covered windings 22 are configured to have different marks for each of a plurality of independent coils. Circuit components. 5. The core 20 is of a toroidal type or an E type.
The magnetic circuit component using a coil according to claim 3, wherein the magnetic circuit component comprises a combination of a shape, an I shape, a U shape, or an air core.