JPH067213U - Thin coil - Google Patents

Abstract

(57) [Abstract] [Purpose] A thin coil in which a coil made of a spiral conductor and a film-like insulator are laminated and a soft magnetic ferrite core is assembled to the thin coil. A through-hole is provided at the same position, and the connection between the coils and the coil laminated body are integrally fixed with solder to form a thin coil. [Configuration] A right-handed coil 2a and a left-handed coil 2b,
A through hole 3 is provided in the coil end portion of the through hole 8 into which the ferrite magnetic core 4 is inserted, the through hole 3 of the insulator 1 for insulating each coil is aligned with the through hole position of the two coils, and laminated by the through hole. The coil laminate is integrated by soldering the bodies together, and the two coils form a thin coil connected in series.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to the structure of a coil which is an electronic circuit element, and more particularly to the structure of a thin coil having a thin shape.

[0002]

[Prior art]

 As shown in FIG. 4, a conventional coil of this type has a structure in which an insulator 6 made of a film-like electrical insulating material and a coil 7 in which a conductor is formed in a spiral shape are laminated, and a soft magnetic material is formed in a through hole 8 in the center. It was constructed by inserting magnetic legs made of ferrite. In the conventional thin coil, the insulator 6 and the coil 7 are individually present, and the insulator 6 and the coil 7 formed in a spiral shape of the insulated copper wire are alternately stacked at the time of manufacturing. There were problems such as lack of safety in terms of electrical insulation characteristics due to man-hours and deviations that occur during stacking.

[0003]

[Problems to be solved by the device]

 In order to eliminate these problems, the present invention forms a coil made of a spiral conductor between the layers of a film-shaped insulator, and makes the outer dimensions the same as the outer dimensions of the insulator, and By mounting the insulator and the through hole to be attached to the coil conductor end at the same position on the conductor end on the side of the central through hole where the magnetic leg is inserted, the winding process and the stacking process can be eliminated, and the number of manufacturing steps is increased. The purpose of the invention is to provide a thin coil with a large reduction in the number of wires and an improved risk of electrical insulation due to misalignment.

[0004]

[Means for Solving the Problems]

 According to the present invention, an insulator that insulates and stacks a coil, and a conductor end of a through hole that assembles a magnetic leg of a ferrite core to a coil formed in a spiral shape with different winding directions, penetrates the conductor end of the insulator and the coil. The coil conductors are positioned so that adjacent coil conductors are wound in opposite directions so that the conductors are wound in opposite directions. A thin coil that can form the coil and fix the laminated body by soldering. That is, the present invention is designed such that a planar spiral right-handed coil and a spiral left-handed coil are laminated with a film-like insulator interposed therebetween, and the coil end of the coil close to the through hole in which the ferrite core in the center is incorporated. A coil laminated structure including a coil and an insulator by providing a through hole at the same position as the insulator, connecting the right-handed coil and the left-handed coil in series through the through hole, and connecting the coil and the laminate by soldering It is a thin coil characterized in that the body is integrally fixed.

[0005]

[Action]

 A film-shaped insulator and conductors whose spiral directions are different from each other are stacked, and coils with different winding directions are laminated alternately, and the magnetic legs of the ferrite core of the wound coil are assembled. Through holes are provided at the same position from the top to the bottom of the laminated body so as to penetrate the conductor end of the coil, and the coil is connected by soldering and the coil laminated body with improved insulation is fixed, and the ferrite core is assembled. And thin coil.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an internal structure of a thin coil in which an insulator 1, a right-handed coil 2a and a left-handed coil 2b are integrated, and a magnetic core is attached to the center of the right-handed coil 2a, the left-handed coil 2b and the insulator 1. Through holes 8 are attached, and through holes 3 are provided at the conductor ends of the right winding coil 2a and the left winding coil 2b on the through hole side. When the outer positions are aligned, the through holes 3 coincide with the through holes of the insulator. The left-handed coil 2b and the right-handed coil 2a are connected in series by soldering the through holes, and the insulator and the coil are laminated and integrated. FIG. 2 shows a state in which the conductor of the coil is etched or laminated on the insulator 1, and shows an embodiment of a thin coil in which the insulator and the coil are integrally formed with one basic size. FIG. 3 shows an example of a completed drawing of the thin coil of the present invention, which incorporates a magnetic core made of a ferrite core. According to the present invention, since the coil pattern is formed in one substrate, and the interlayer and the exterior are electrically insulated by the insulator, there is no need for electrical insulation work, and the choke coil is not required. When manufacturing, the conventional coil winding process and the process of alternately stacking insulators and coils are not required, so the manufacturing man-hours can be greatly reduced and the spiral conductor can be wound up and down with the required number of turns. Since it is connected by the conductor of the reverse winding, it is possible to pull out at the start and end of the winding, and by stacking one combination shown in the embodiment in multiple layers, a thin coil with different inductance values can be obtained. Can be done.

[0007]

[Effect of device]

 As described above, by using the thin coil according to the present invention, the winding process and the stacking process are eliminated, and the manufacturing man-hours are greatly reduced. It has become possible to provide a thin coil with improved electrical insulation as a structure.

[Brief description of drawings]

FIG. 1 is a perspective view showing the internal structure of a thin coil according to the present invention.

FIG. 2 is a perspective view showing a coil laminated body of a thin coil according to the present invention.

3 is a perspective view of a thin coil completed by assembling a soft magnetic ferrite core to the coil stack of FIG.

FIG. 4 is an exploded perspective view of a conventional thin coil.

[Explanation of symbols]

 1 Insulator 2 Coil Lead Terminal 2a Right Winding Coil 2b Left Winding Coil 3 Through Hole 4 Ferrite Core 6 Insulator 7 Coil 8 Through Hole

Claims (1)

[Scope of utility model registration request] 1. A flat spiral right-handed coil and a flat spiral left-handed coil are laminated by interposing a film-like insulator between them, and a coil end located near a through hole in which a ferrite core in the center of the coil is incorporated. A coil laminated layer composed of a coil and an insulator by providing a through hole at the same position as the insulator, connecting the right-handed coil and the left-handed coil in series through the through hole, and solder-connecting the coil and the laminate. A thin coil characterized in that the body is integrally fixed.