JP2007173263A - Edgewise winding electromagnetic coil and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an edgewise winding electromagnetic coil where resistance is lowered and inductance can be enlarged. <P>SOLUTION: A coil with small thickness dispersion after winding can be formed by edgewise-winding a thin rectangular wire, and a plurality of the coils are combined and connected in parallel so as to obtain the edgewise winding electromagnetic coil of high Q. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an air-core edgewise wound electromagnetic coil and a method for manufacturing an air-core edgewise wound electromagnetic coil using a fused conductor and a non-fused conductor.

  It is possible to reduce the DC resistance value while increasing the inductance as a feature of the edgewise wound electromagnetic coil of the rectangular conductor. However, if the coil inner diameter is small and the above characteristics are satisfied, the curvature is increased and the winding is increased. It becomes extremely difficult to do. Therefore, it can be easily wound by reducing the thickness of the flat wire. Further, the present invention provides an electromagnetic coil that can be miniaturized by making the most of the characteristics of edgewise winding by combining the wound edgewise electromagnetic coil.

Conventional edgewise wound electromagnetic coils require a large force for winding to bend a wire with a thick flat conductor, and winding is difficult, so it is difficult to manufacture small-sized edgewise wound electromagnetic coils and yield increases. Problems such as badness are evident.

  Edgewise winding refers to a winding method in which a flat conductive wire (rectangular wire) is set and wound so that the longitudinal direction is perpendicular to the winding core.

The edgewise winding coil is used as a high voltage generator coil, an inverter choke coil, a small transformer, etc. taking advantage of the single layer winding (because the lead wire at the beginning and end of winding is separated). However, it has been impossible to realize a small and low resistance coil because winding is difficult. By reducing the thickness of the rectangular wire and making it a plurality of edgewise windings in order to easily achieve high inductance and low resistance, the edgewise winding electromagnetic coil is combined with a plurality of edgewise winding coils between the wires. It is characterized in that resistance can be achieved and the characteristics of the edgewise electromagnetic coil can be maximized and utilized in various electronic devices.

In the production of small transformers, a small transformer that reduces the leakage inductance by combining the primary and secondary coils using edgewise coils has been proposed (Patent Document 1). The gap between them is not constant, and there is a disadvantage that dimensional accuracy cannot be improved and that miniaturization and high performance are hindered. In the present invention, by combining a plurality of thin rectangular conductors in an edgewise manner and then heating and pressing, not only the coil conductors are in close contact and leakage magnetic flux is reduced, but also dimensional accuracy and variation can be reduced, so that high density can be easily achieved. It is possible.
JP 2004-103624 A

The problem to be solved is that when a thick rectangular conductor is wound in a small edgewise manner, the curvature is large, and the thickness of the rectangular wire becomes irregular after winding.

In order to solve the above-mentioned problem, the present invention implements a plurality of edgewise windings using a thin rectangular conductor wire, and a plurality of edgewise winding coils are combined and connected in parallel between the wires, so that direct current can be easily achieved. It is an object of the present invention to easily provide a low-resistance edgewise-wound electromagnetic coil whose resistance value can be reduced to 1 for the number of combinations.

Further, an edgewise winding electromagnetic coil capable of increasing the inductance by serially connecting a plurality of edgewise winding coils between a plurality of edgewise windings using a thin rectangular conductor wire is easily provided. There is.

Another object is to easily provide a high-performance transformer by opening both ends of the coil.

In addition, after combining a plurality of edgewise winding coils coated with a fusion layer conductor or adhesive, etc., heating means such as resistance, infrared rays, hot air, etc. are provided and the length direction is heated and compressed so that the lines are in close contact with each other. Provided is a manufacturing method for manufacturing a coil that can realize improvement in dimensional accuracy and further stabilizes the inductance of the coil by closely contacting the wires.

  Since the edgewise wound electromagnetic coil of the present invention turns a thin rectangular conductor wire into edgewise winding, the winding stress is small, the thickness variation is small, and the line-to-line dimensions can be arbitrarily changed. Coils can be combined. The DC resistance value can be lowered by connecting the coil ends in parallel. As the DC resistance value decreases, the Q of the coil increases. By increasing Q, the electromagnetic energy generated in the coil can be utilized with low loss, and a coil that is extremely effective in improving the performance of electronic and electrical equipment is provided.

  Furthermore, the inductance can be increased by connecting in series. Further, by opening the end of the coil, it can be used as a transformer with a small leakage magnetic flux.

  After a plurality of thin rectangular conductors are edgewise wound, they can be stored like an integrated coil by screwing them in between the edgewise windings according to the winding direction. By connecting the coils in parallel, the inductance is equivalent and the DC resistance value can be reduced to one-thousand of the number of coils screwed in. Further, the present invention provides an edgewise wound electromagnetic coil that can improve the length dimensional accuracy by heating and pressing the coil and further improve the inductance accuracy by closely contacting the wires.

  FIG. 1 shows a front view of a conventional edgewise wound electromagnetic coil. 1 is a conducting wire, 2 is a lead wire, 3 is a gap between coil windings.

FIG. 2 shows a three-dimensional view of the edgewise wound electromagnetic coil of the present invention. 4 is a conducting wire, 5 is a lead wire, and 6 is an overlapping portion.

  FIG. 3 shows a front view of the edgewise wound electromagnetic coil of the present invention. 4 is a conducting wire, 5 is a lead wire, and 6 is an overlapping portion.

FIG. 4 shows an enlarged view of A of FIG. 7 is a lead wire, 8 is a conductor, and 9 is a gap between coil windings. FIG. 5 shows an enlarged view of B of FIG. Reference numeral 7 denotes a lead wire, 8 denotes a conducting wire, and 10 denotes a coil overlapping portion.

FIG. 6 shows a side view of the edgewise wound electromagnetic coil of the present invention. 4 is a conducting wire, and 5 is a lead wire.

  The rectangular conductive wire edgewise wound electromagnetic coil of the present invention can make the direct current resistance value extremely low without changing the inductance, and can greatly contribute to the improvement of the performance of electronic and electric equipment. In particular, when used in a reactor such as an inverter, the attenuation of energy generated in the reactor can be utilized very little, so that a small and high-performance device can be obtained, and cost reduction such as output improvement and material cost reduction can be provided.

Front view of a conventional edgewise winding electromagnetic coil Three-dimensional view of edgewise wound electromagnetic coil of the present invention Front view of edgewise wound electromagnetic coil of the present invention 1 is an enlarged view of A in FIG. The figure which expanded B of Drawing 3 Side view of edgewise wound electromagnetic coil of the present invention

Explanation of symbols

1, 4, 8, Conductor 2, 5, 7, Lead lead 3, 9, Coil winding gap 6, 10, Overlapping part

Claims (4)

An edgewise wound electromagnetic coil comprising a plurality of edgewise wound electromagnetic coils combined with a plurality of edgewise wound electromagnetic coils using a rectangular conductor wire with or without an adhesive layer and coated with an adhesive. . 2. The edgewise wound electromagnetic coil according to claim 1, wherein a plurality of edgewise wound electromagnetic coils using a flat wire are combined and connected in parallel or in series, or the ends of the coils are opened. The method of manufacturing an edgewise wound electromagnetic coil according to claim 1 or 2, wherein the edgewise wound electromagnetic coil is combined with the edgewise wound electromagnetic coil and heated and heated by a heating means. The heating means is configured to heat the electromagnetic coil by any one or a combination of energizing the electromagnetic coil to heat resistance, attaching the electromagnetic coil to a heated mold, and heating the electromagnetic coil by infrared rays or hot air. Item 3. The edgewise electromagnetic coil according to Item 3.

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