JP2007035980A - Laminated electromagnetic coil and method for manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing in which an electromagnetic coil is laminated, having a concave-convex groove for cooling. <P>SOLUTION: A plurality of alpha winding electromagnetic coils having different inside and outside diameters is stuck together with a melting wire so as to make a groove in which a cooling pipe can be mounted. For dimensional accuracy and high reliability, it is thermal-pressed to form a laminated electromagnetic coil, having the concave-convex groove for cooling in the outer shape and inner shape, thereby largely increasing the current of the electromagnetic coil to obtain a large magnetomotive force, and making it possible to manufacture the laminated electromagnetic coil which can significantly improve the performance of an electric/electronic equipment and the like. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a laminated electromagnetic coil and a manufacturing method, characterized in that a concave and convex groove is provided in the outer shape and inner shape of the coil with an air core alpha winding using a fusion lead.

  In order to improve the performance of equipment using electromagnetic force, it is common to increase the current flowing through the electromagnetic coil and increase the magnetomotive force, but the power loss increases in proportion to the square of the current due to the increase in current. . An increase in power loss causes a large temperature rise, and the large temperature rise greatly affects the life and reliability of the device. Therefore, a method for cooling the device main body or indirectly cooling the electromagnetic coil is generally known to ensure high performance and reliability of the device.

Various methods have been devised for cooling the device main body, such as water cooling, air cooling, refrigerant, and electronic cooling, but the method of directly cooling the electromagnetic coil main body has not been realized very difficult due to the structure of the electromagnetic coil. Moreover, even when the outer periphery of the electromagnetic coil is cooled, it has not been realized due to problems such as an increase in size, difficulty in adhesion to the coil surface, and a decrease in cooling efficiency.

The problem to be solved is that a cooling uneven groove is provided in the outer shape and inner shape of the electromagnetic coil. In general, it is extremely difficult to wind a coil while forming a concave and convex groove on the outer shape and the inner shape, and even if it is wound, the boundary of the concave and convex groove becomes irregular, so the space factor is extremely low and more space is required. Even if a cooling pipe is installed, there is a problem that the contact surface is limited, the thermal conductivity is poor, and a sufficient cooling effect cannot be obtained. The present invention is an electromagnetic coil provided with a concave and convex groove and a manufacturing method for enhancing the cooling effect without reducing the space factor.

In order to solve the above-mentioned problem, the present invention makes it easy to manufacture a plurality of electromagnetic coils having different inner diameters, outer diameters, or winding numbers in advance, and to heat and press the variations in coil dimensions. The variation in dimensions can be made extremely small, the smoothness in the thickness direction can be increased, and a plurality of electromagnetic coils having different inner diameters, outer diameters, and winding times can be easily bonded together, and the variation in finished dimensions can be made extremely small. Also, when bending at least one surface in the thickness direction or the direction orthogonal to the thickness direction, bending and laminating can be easily performed by heating and pressing. That is, by laminating the above-described coils, it is easy to provide a laminated electromagnetic coil having a cooling concave and convex groove.

In addition, by attaching a plurality of alpha wound electromagnetic coils having different inner diameters, outer diameters and winding numbers to a laminating jig in the laminating process without high precision processing, and providing heating means such as resistance, infrared rays, hot air, etc. A manufacturing method for laminating electromagnetic coils having concave and convex grooves for cooling while removing the dimensional accuracy variation of the laminated coil by heating and pressing the dimensional variation due to winding distortion generated at the time of winding is provided.

  The fused conducting wire alpha-wound electromagnetic coil of the present invention is wound on a rectangular shape or a circular shape with an arbitrary inner diameter, outer diameter and arbitrary number of turns using a commonly used fused wire, and at the time of winding or after winding The coil is heated and pressed to make the surface portion in the thickness direction uniform, and a plurality of coils having different inner diameters, outer diameters, and winding numbers are stacked and connected in series or in parallel, and in the thickness direction or thickness direction. A laminated electromagnetic coil in which at least one of the directions orthogonal to each other is curved and laminated and connected in series or in parallel. Conventionally, the coil itself cannot be cooled directly, but the concave and convex grooved laminated electromagnetic coil of the present invention can directly wind a cooling pipe around the electromagnetic coil. Further, in the laminated coil lamination assembly process, the cooling pipe can be simultaneously formed into a laminated electromagnetic coil with an assembly cooling pipe. Therefore, the electromagnetic coil can be directly cooled, the cooling efficiency can be improved, the current flowing through the electromagnetic coil can be increased, the output and torque of the electric device can be improved, and the small size, high performance and high reliability of the electric device can be achieved. It becomes possible.

  Alpha winding with different number of turns is applied to a rectangular shape or circular shape with different inner and outer diameters using a fusion wire, and the alpha-wound coil is heated to at least one of the thickness direction and the direction orthogonal to the thickness direction. By pressing the direction, the gaps between the windings are brought into close contact, and by pressing, the distortion of the electromagnetic coil is eliminated, and there is no gap between the coils when laminating the coils, resulting in excellent dimensional accuracy and no deterioration in insulation. A laminated electromagnetic coil having

  FIG. 1 is a three-dimensional view of the electromagnetic coil of the present invention before heating and pressing, wherein 1 is unevenness on the upper surface of the coil, 2 is a lead wire, 3 is a fusion lead, and 4 is a cross section of the coil. FIG. 2 is a three-dimensional view after pressing with heat, where 1 is unevenness on the top surface of the coil, 2 is a lead wire, 3 is a fused wire, 4 is a cross section of the coil, 5 is a long side direction, and 6 is a thickness direction. , 7 indicates the width direction.

3 is a cross-sectional view of FIG. 1, in which 8 is a conductor, 9 is an insulating film, 10 is a fusion film, and 11 is a gap between the lines. 4 is a cross-sectional view of FIG. 2, in which 8 is a conductor, 9 is an insulating film, 10 is a fusion film, and 11 is a gap between the lines.

  FIG. 5 is a three-dimensional view of the external concave groove electromagnetic coil of the present invention, wherein 12 is a fusion lead, 13 is a lead wire, 14 is a connecting portion, and 15 is an external concave portion. FIG. 6 is a three-dimensional view of the inner grooved electromagnetic coil of the present invention, in which 12 is a fused lead, 13 is a lead wire, 14 is a connecting portion, and 16 is an inner recessed portion. FIG. 7 shows an inner shape and outer shape concave groove electromagnetic coil according to the present invention, wherein 12 is a fusion lead, 13 is a lead wire, 14 is a connecting portion, 15 is an outer shape concave portion, and 16 is an inner shape concave portion. .

FIG. 8 is a three-dimensional view of a conventional electromagnetic coil, wherein 12 is a fusion-bonding wire, 13 is a lead wire, 14 is a connecting portion, 17 is a laminated surface, and 18 is an inner diameter.

  FIG. 9 is a three-dimensional view in which a cooling pipe is mounted as an electromagnetic coil application example 1 of the present invention, wherein 19 is a cooling pipe, 20 is an inlet, and 21 is an outlet. FIG. 10 shows a three-dimensional view of the cooling pipe, 22 is a coil contact surface, 20 is an inlet, and 21 is an outlet.

  FIG. 11 shows a three-dimensional view of an electromagnetic coil application example 2 according to the present invention, in which a magnetic material is integrated into a groove, 23 is a magnetic material, 24 is a magnetic material bonding surface, and 25 is a laminated surface. FIG. 12 shows a cross-sectional view, 23 is a magnetic body, 25 is a laminated surface, and 3 is a fusion-bonding wire.

13 and 14 are cross-sectional views of a truncated pyramid and truncated cone type. Reference numeral 15 denotes an external recess, 16 denotes an internal recess, and 12 denotes a fusion lead.

  The lamination method of the electromagnetic coil wound with alpha of the present invention is heated to 60 to 230 ° C. with energization, hot air and infrared rays, and is attached to a pressing jig to press the vertical, horizontal direction or horizontal or vertical to reduce the gap portion. And let the fused wires be in close contact.

The alpha-wound electromagnetic coil is mounted on a mold heated to 60 to 230 ° C., and the vertical and horizontal directions or either vertical or horizontal pressure is pressed to reduce the gap and bring the fused wires into close contact.

  The balance degree of the alpha winding laminated electromagnetic coil of the present invention is close to the accuracy of the pressing die. Therefore, the gap portion is greatly reduced, so that the density of the electromagnetic coil can be increased and the dimensional accuracy is remarkably improved. Contributes to improving the performance of electrical equipment.

  As an application example of the electromagnetic coil of the present invention, there is provided an electromagnetic coil capable of allowing a larger current to flow by cooling the electromagnetic coil and obtaining a larger magnetomotive force with less loss. In addition, when a coil is assembled, a magnetic body is attached to the groove and assembled together, so that magnetic fields with different magnetic flux densities can be obtained, and the speed of the magnetic body moving in the electromagnetic coil can be controlled. Convergence and diffusion of passing electrons can be controlled with a magnetic field different from the conventional one. Even when the inner diameter of the coil is used as a sliding surface, it is possible to move the magnetic body up and down without insulation of the inner diameter portion of the coil by assembling the inner concave groove with a ring slightly larger than the inner diameter. .

  The alpha coiled grooved electromagnetic coil can be used as a cooling surface for cooling, convergence of magnetic flux, diffusion, and convergence, diffusion, and sliding of electron beams, and can take advantage of the excellent features of each. First, the use for cooling can suppress a temperature rise and a large magnetomotive force is obtained by allowing a large current to flow, thereby enabling downsizing, high performance, and high reliability of electrical equipment. In addition, by attaching a magnetic material to the concave groove, the magnetic flux can be converged and diffused, and special control that cannot be controlled by a conventional coil becomes possible. Further, when the inner diameter is used as a sliding surface, the inner diameter portion can be used without insulation, and the gap between the iron core and the coil surface can be made extremely small, and the electromagnetic loss can be reduced. It can be widely used to improve the performance and miniaturization of electronic / electrical equipment and precision equipment.

The three-dimensional figure before a heating press with the electromagnetic coil of this invention. The three-dimensional figure after a heating press with the electromagnetic coil of this invention. FIG. 2 is a sectional view of FIG. 1 according to the present invention. Sectional drawing of FIG. 2 of this invention. FIG. 3 is a three-dimensional view of the external groove electromagnetic coil of the present invention. The three-dimensional view of the inner shape concave groove electromagnetic coil of this invention. The solid figure cross section of the inner shape of this invention, and an external shape concave groove electromagnetic coil. The three-dimensional view of the conventional electromagnetic coil. The solid diagram of the application example 1 of the electromagnetic coil of this invention. The cooling pipe of the application example 1 of the electromagnetic coil of this invention. The solid diagram of the application example 2 of the electromagnetic coil of this invention. Sectional drawing of the application example 2 of the electromagnetic coil of this invention. Sectional drawing of the pyramid frustum of this invention and the electromagnetic coil of a truncated cone. Sectional drawing of the pyramid frustum of this invention and the electromagnetic coil of a truncated cone.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Unevenness of coil upper surface 2, 13 Lead-out lead wire 3, 12 Fusion lead 4 Coil cross section 5 Long side direction 6 Thickness direction 7 Width direction 8 Lead wire 9 Insulating film 10 Fusion film 11 Gap 14 between wires 14 Connection part 15 Outer concave portion 16 Inner concave portion 17, 25 Laminating surface 18 Inner diameter 19 Cooling pipe 20 Coil contact surface 21 Inlet port 22 Outlet port 23 Magnetic body 24 Magnetic body bonding surface

Claims (5)

In an electromagnetic coil having an alpha winding using a fusion conducting wire comprising a conducting wire, an insulating coating covering the periphery of the conducting wire, and a fusion coating further covering the insulating coating, either the outer shape or the inner shape Or the laminated electromagnetic coil characterized by having an uneven | corrugated groove | channel on both. The alpha winding electromagnetic coil is characterized in that the outer diameter and inner diameter are different, and the electromagnetic coil is composed of a plurality of different numbers of turns, and is formed into a truncated pyramid or truncated cone shape with concave and convex grooves on the outer shape and inner shape. Laminated electromagnetic coil. A plurality of alpha-wound electromagnetic coils having different winding outer diameters and inner diameters are arranged within the elastic deformation range of the conducting wire in at least one of the thickness direction of the air-core electromagnetic coil and the direction orthogonal to the thickness direction. 3. The method of manufacturing a laminated electromagnetic coil according to claim 1, wherein the laminated electromagnetic coil is heated and pressed. The alpha-winding air core electromagnetic coil is characterized in that after being wound with an air core, the electromagnetic coil is heated by a heating means and pressed in at least one of the thickness direction and the direction orthogonal to the thickness direction. A method for manufacturing a laminated electromagnetic coil according to claim 1. The heating means is configured to heat the electromagnetic coil by any one or a combination of energizing the electromagnetic coil and resistance heating, attaching the electromagnetic coil to a heated mold, or heating the electromagnetic coil with infrared rays or hot air. Item 5. A method for manufacturing a laminated electromagnetic coil according to Item 4.

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