Coil device and method for manufacturing the same

Abstract

To provide a coil device with an optimized terminal configuration for an external connection terminal and a manufacturing method thereof.SOLUTION: A coil device 10 includes a coil 12 composed of wound conductors, a core 11 having a winding portion 17 around which the coil 12 is wound, a base 13 that fixes the core 11, and a terminal 19 electrically connected to the coil 12. The base 13 includes an insertion hole 139 that penetrates the base 13 in the vertical direction, and a terminal accommodating portion in which the terminal 19 is accommodated. Further, the terminal 19 includes a vertical portion 195 inserted into the insertion hole 139 and a horizontal portion 196 electrically connected to the coil 12. Further, the entire area of the horizontal portion 196 is accommodated in the terminal accommodating portion.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a coil device and a method for manufacturing the same, and more particularly to a coil device having a terminal portion for external connection and a method for manufacturing the same.

Background Art

[0002] Conventionally, coil devices have been used as electronic components such as noise filters.

[0003] FIG. 8 is a perspective view showing a coil component 100 described in Patent Document 1. The coil component 100 mainly includes a pedestal 102, a core 101, a coil body 104, and mounting pins 103.

[0004] The pedestal 102 is made of synthetic resin and has a shape capable of accommodating the core 101 at the upper part. Mounting pins 103 are arranged at the four corners of the pedestal 102.

[0005] Two coil bodies 104 made of flat wires wound edgewise are wound around the core 101. Here, the winding axis of the coil body 104 is substantially parallel to the mounting surface of the coil component 100. Also, a total of four ends 105 are led out from both ends of each coil body 104. Each end 105 is connected to a mounting pin 103 arranged at the corner of the pedestal 102.

[0006] Also, a configuration similar to the coil component 100 described in Patent Document 1 is also described in Non-Patent Document 1.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Non-Patent Documents

[0008]

Non-Patent Document 1

[0009] However, the coil component 100 with the above configuration had room for improvement in terms of its configuration and manufacturing method.

[0010] Specifically, the mounting pin 103 has a vertically extending lower portion used for plug-in mounting, and the end portion 105 is soldered to the horizontally extending upper portion. Here, since the mounting pin 103 is positioned at the four corners of the base 102, there was a problem that if the upper portion of the mounting pin 103 protruded in the left-right direction, the area required for mounting the coil component 100 would increase.

[0011] Furthermore, in the manufacturing process, when connecting the terminal 105 to the mounting pin 103, a temporary connection is made by wrapping the terminal 105 around the upper part of the mounting pin 103 before soldering. However, the wrapping of the terminal 105 is not easy, which leads to increased manufacturing costs.

[0012] This invention has been made in view of the above circumstances, and the object of this invention is to provide a coil device and a method for manufacturing the same in which the configuration of the terminal section for external connection is optimized. [Means for solving the problem]

[0013] The coil device of the present invention comprises a coil having a coil portion made of a wound conductor, a core having a winding portion around which the coil is wound, a base for fixing the core, and a terminal portion electrically connected to the coil. The base has an insertion hole that penetrates the base in the vertical direction and a terminal housing portion in which the terminal portion is housed, The aforementioned terminal portion is It has a vertical portion that is inserted into the insertion hole and a horizontal portion that is electrically connected to the coil, The end of the coil is the horizontal part It is characterized by being sandwiched between the base.

[0014] Furthermore, the coil device of the present invention comprises a coil having a coil portion made of a wound conductor, a core having a winding portion around which the coil is wound, a base for fixing the core, and a terminal portion electrically connected to the coil. The base has an insertion hole that penetrates the base in the vertical direction and a terminal housing portion in which the terminal portion is housed, The aforementioned terminal portion is It has a vertical portion that is inserted into the insertion hole and a horizontal portion that is electrically connected to the coil, The aforementioned horizontal part A gap is formed between the base and the coil for temporarily securing the coil's end, and the coil's end is inserted through the gap only once.

[0015] Furthermore, in the coil device of the present invention, the core is a seamless closed magnetic core having a linear first winding portion and a second winding portion, and the coil has a first coil wound around the first winding portion and a second coil wound around the second winding portion with a winding direction opposite to that of the first coil, and the coil is constructed by edgewise winding of a flat rectangular wire.

[0016] Furthermore, the present invention comprises a coil having a coil portion made of a wound conductor, a core having a winding portion around which the coil is wound, a base for fixing the core, and a terminal portion electrically connected to the coil. The base has an insertion hole that penetrates the base in the vertical direction and a terminal housing portion in which the terminal portion is housed, The aforementioned terminal portion is A vertical portion inserted into the aforementioned insertion hole, and a horizontal portion electrically connected to the coil, A method for manufacturing a coil device having the following steps: preparing the core around which the coil is wound and the base into which the terminal portion is incorporated; assembling the core into the base; and connecting the ends of the coil horizontal part The invention is characterized by comprising the steps of: temporarily fixing the terminal portion by clamping or inserting it between the terminal portion and the base; and electrically connecting the terminal portion and the coil. [Effects of the Invention]

[0017] According to the coil device of the present invention, by sandwiching the terminal of the coil between the opposing portion of the terminal portion and the base, the terminal of the coil and the terminal portion can be easily connected.

[0018] Also, according to the coil device of the present invention, the terminal of the coil can be temporarily fixed by inserting it between the opposing portion of the terminal portion and the base, and the terminal of the coil and the terminal portion can be easily connected.

[0019] Also, according to the coil device of the present invention, by having a closed magnetic core, a first coil, and a second coil, it can be used as a line filter.

[0020] Also, according to the manufacturing method of the coil device of the present invention, the terminal of the coil can be temporarily fixed by sandwiching or inserting it between the opposing portion of the terminal portion and the base, and can be electrically connected in this state.

Brief Description of the Drawings

[0021] [Figure 1] It is a diagram showing a coil device according to an embodiment of the present invention, (A) is a perspective view of the coil device seen from the front, and (B) is a perspective view of the coil device seen from the rear. [Figure 2] It is a diagram showing a coil device according to an embodiment of the present present invention, and is a perspective view showing the core and the coil after the coil is wound. <000确定]] [Figure 3] It is a diagram showing the base of the coil device according to an embodiment of the present invention, (A) is a perspective view of the base seen from the front, and (B) is a perspective view of the base seen from the rear. [Figure 4] It is a top view showing the base of the coil device according to an embodiment of the present invention. <000确定]] [Figure 5] It is a diagram showing a coil device according to an embodiment of the present invention, and (A), (B), (C), and (D) are diagrams showing each configuration of the front surface of the base at the connection portion of the terminal portion. [Figure 6]This figure shows a coil device according to one embodiment of the present invention, where (A), (B), (C), and (D) are diagrams showing the configurations of the front surface of the base at the terminal connection portion. [Figure 7] This is a diagram showing a coil device according to one embodiment of the present invention, and is a diagram showing the configuration of the front surface of the base at the connection part of the terminal section. [Figure 8] This is a perspective view showing a coil device related to the background technology. [Modes for carrying out the invention]

[0022] Hereinafter, a coil device 10 according to an embodiment of the present invention and its manufacturing method will be described in detail with reference to the drawings. In the following description, the same reference numerals will be used for identical components, and repeated descriptions will be omitted.

[0023] Figure 1(A) is a perspective view of the coil device 10 from the front, and Figure 1(B) is a perspective view of the coil device 10 from the rear.

[0024] Referring to Figures 1(A) and 1(B), the coil device 10 mainly comprises a core 11, a coil 12, a base 13, and a terminal section 19. The coil device 10 can be used, for example, as a line filter, noise filter, common-mode noise filter, transformer, etc. The coil device 10 is also a mounted component that is mounted on a mounting surface such as a mounting board. The mounting structure of the coil device 10 can be plug-in or soldered. As will be described later, the first coil 121 and the second coil 122 that constitute the coil 12 have wires wound substantially parallel to the mounting surface of the coil device 10.

[0025] The core 11 has a roughly rectangular frame shape when viewed from above. The core 11 can be made of materials such as amorphous alloys, silicon steel sheets, or magnetic materials such as ferrite. Details of the core 11 will be described later with reference to Figure 2.

[0026] The coil 12 consists of a wound conductor. Specifically, the coil 12 is constructed by edge-winding a flat rectangular wire. The surface of the conductor constituting the coil 12 is coated with a thin resin film (for example, a film made of urethane resin). As will be described later with reference to Figure 2, the coil 12 consists of a first coil 121 and a second coil 122.

[0027] The base 13 is a component made of synthetic resin or the like, configured to fix the core 11, and its configuration and other details will be described later with reference to Figure 3.

[0028] The terminal section 19 is a connecting means that is electrically connected to the coil 12 and located at the lower end of the coil device 10. The terminal section 19 is made of a bent wire made of copper, aluminum, or the like. Specifically, the terminal section 19 has a first front terminal section 191 connected to the front end 123 of the first coil 121, a second front terminal section 192 connected to the front end 125 of the second coil 122, a first rear terminal section 193 connected to the rear end 124 of the first coil 121, and a second rear terminal section 194 connected to the rear end 126 of the second coil 122. Details of each of these terminal sections 19 will be explained with reference to Figure 4, etc.

[0029] Referring to Figure 1(A), the first front terminal portion 191 has a vertical portion 195 and a horizontal portion 196. The vertical portion 195 penetrates the base 13 vertically and leads out downward. The front terminal 123 is sandwiched or inserted between the horizontal portion 196 and the front surface of the base 131 of the base 13. Furthermore, the connection portion between the horizontal portion 196 and the front terminal 123 is welded with solder (not shown here). This connection structure is the same for the second front terminal portion 192, the first rear terminal portion 193, and the second rear terminal portion 194.

[0030] Figure 2 is a perspective view showing the core 11 and coil 12.

[0031] The core 11 is a continuous closed magnetic core having a linear first winding section 171 and a second winding section 172 as winding sections 17. The first winding section 171 and the second winding section 172 are oriented approximately horizontally with respect to the mounting surface of the coil device 10 (not shown here).

[0032] The coil 12 includes a first coil 121 wound around a first winding section 171, and a second coil 122 wound around a second winding section 172, with the winding direction opposite to that of the first coil 121. The first coil 121 and the second coil 122 have the same cross-sectional shape of the conductor (conductor width, conductor thickness) and the same number of turns. In this way, the coil device 10, including the first coil 121 and the second coil 122, can be used as a noise filter or the like, as described above. Furthermore, the coil sections 127 and 128 are positioned approximately horizontally with respect to the mounting surface of the coil device 10, which is not shown here.

[0033] The first coil 121 has a coil portion 127 consisting of a conductor wound around the first winding portion 171, a front end 123 obtained by unwinding the conductor at the front end of the coil portion 127, and a rear end 124 obtained by unwinding the conductor at the rear end of the coil portion 127.

[0034] The second coil 122 has a coil portion 128 consisting of a conductor wound around the second winding portion 172, a front end 125 obtained by unwinding the conductor at the front end of the coil portion 128, and a rear end 126 obtained by unwinding the conductor at the rear end of the coil portion 128. The coil portion 127 and the coil portion 128 have approximately the same outer diameter and circumference.

[0035] Figure 3(A) is a perspective view of the base 13 seen from the front, and Figure 3(B) is a perspective view of the base 13 seen from the rear.

[0036] Referring to Figures 3(A) and 3(B), the base 13 mainly comprises a pedestal 131, a protrusion 140, and a storage area 138A. The base 13 is made of integrally molded synthetic resin. The core 11 shown in Figure 2 is fixed to the upper surface of the pedestal 131.

[0037] The base 131 has a roughly rectangular shape when viewed from above and is the part that supports the core 11 mentioned above. The upper surfaces of the front central and rear central parts of the base 131 are flat sections 132.

[0038] The protruding portion 140 is formed by extending the center of the base 131 in the left-right direction upward so that it is elongated vertically along the front-back direction. The protruding portion 140 is fitted into the central opening of the core 11 shown in Figure 2.

[0039] The material-removing portion 134 is formed by partially recessing the surface of the base 13 in a roughly elliptical shape. Here, the material-removing portion 134 is formed in the flat portion 132, the storage area 138A, and the storage area 138B. By forming the material-removing portion 134, the amount of resin required to manufacture the base 13 can be reduced, thereby lowering costs.

[0040] The insertion portion 135 is a part formed by partially protruding the front and rear sides of the base 131. The insertion portion 135 is provided with an insertion hole 139 that penetrates the insertion portion 135 vertically, and the vertical portion 195 of the terminal portion 19, which will be described later, is inserted and fixed into it. In other words, the insertion portion 135 is a part of the base 131 and is the part through which the vertical portion 195 of the terminal portion 19 is inserted vertically.

[0041] Storage areas 138A and 138B are recessed areas on the upper surface of the base 131, and the lower portions of coil section 127 and coil section 128 of the coil 12 shown in Figure 2 are stored there.

[0042] The terminal section 19 is attached to the front and rear portions of the base 131 and has a first front terminal section 191 to a second rear terminal section 194. Referring to Figure 3(A), the first front terminal section 191 and the second front terminal section 192 are inserted into the insertion holes 139 formed in the insertion section 135. Referring to Figure 3(B), the first rear terminal section 193 and the second rear terminal section 194 are inserted into the insertion holes 139 formed in the insertion section 135.

[0043] Figure 4 is a top view of the base 13. Terminal housings 141 to 144 are formed at the four corners of the base 13. Terminal housing 141 is formed at the front left end of the base 13, terminal housing 142 is formed at the front right end, terminal housing 143 is formed at the rear left end of the base 13, and terminal housing 144 is formed at the rear right end of the base 13.

[0044] Here, the terminal housing portion 141 is a portion formed by cutting out the front left corner of the base 13, and is an area enclosed by a virtual extension line 20 extending the front side of the base 131 to the left and a virtual extension line 21 extending the left side of the base 131 to the front. The same applies to the terminal housing portions 142, 143, and 144.

[0045] In this embodiment, the entire area of ​​the horizontal portion 196 of the first front terminal portion 191 is housed in the terminal housing portion 141. That is, when the base 13 is viewed from above, from the front, or from the left, the entire area of ​​the horizontal portion 196 is housed in the terminal housing portion 141. In other words, no matter which of these directions it is viewed from, the horizontal portion 196 does not protrude outward from the side of the base 131.

[0046] Similarly, the entire area of ​​the horizontal portion 196 of the second front terminal portion 192, the first rear terminal portion 193, and the second rear terminal portion 194 is housed in terminal housing portions 142, 143, and 144, respectively.

[0047] In this way, the horizontal portions 196 of the first front terminal portion 191 to the second rear terminal portion 194 do not protrude outward from the outer circumference of the base 131 of the base 13, thereby reducing the area required for mounting the coil device 10, and furthermore, preventing the mounted coil device 10 from short-circuiting with other electronic devices.

[0048] Figures 5(A), 5(B), 5(C), and 5(D) show the configuration of the front surface of the base at the terminal connection section. In each of the figures in Figure 5, the front terminal 123 shown in Figure 1(A) is sandwiched between the base 131 and the horizontal section 196.

[0049] Referring to Figure 5(A), the left end of the insertion portion 135 is extended to the virtual extension line 21. This further improves the insulation between the horizontal portion 196 and the mounting surface. Also, referring to Figure 5(B), the left side of the base 131 is extended to the virtual extension line 20. This further improves the insulation on the left side of the horizontal portion 196.

[0050] Referring to Figure 5(C), the insertion portion 135 and the horizontal portion 196 may be arranged such that the tip of the horizontal portion 196 faces inward in the left-right direction. Referring to Figure 5(D), it is also possible to arrange the insertion portion 135 and the horizontal portion 196 so that the horizontal portion 196 extends in the front-rear direction.

[0051] Figures 6(A), 6(B), 6(C), and 6(D) show various configurations of the front surface 133 of the base 131 and the related configuration of the horizontal section 196. In each of the figures in Figure 6, the front end 125 shown in Figure 1(A) is sandwiched between the front surface 133 and the horizontal section 196.

[0052] Referring to Figure 6(A), the front surface 133 and the horizontal section 196 of the base 131 are approximately parallel. Furthermore, the distance L10 between the front surface 133 and the horizontal section 196 is equal to or less than the width (thickness) of the front end 125. In this way, the front end 125 can be held between the front surface 133 and the horizontal section 196 during the manufacturing process.

[0053] Referring to Figure 6(B), the front surface 133 is inclined with respect to the horizontal section 196. Specifically, the front surface 133 is an inclined surface that slopes backward toward the right, which is the outward direction in the left-right direction. In this way, the front end 125 shown in Figure 1(A) can be suitably clamped between the inclined surface of the front surface 133 and the horizontal section 196.

[0054] Referring to Figure 6(C), the projection 136 is formed by partially projecting forward the front surface 133 of the portion facing the horizontal section 196. The projection 136 may be formed as a point or as a continuous, elongated line extending along the left-right direction. The tip of the projection 136 may be positioned near the horizontal section 196 or may be in contact with the horizontal section 196. In this way, the front terminal 125 shown in Figure 1(A) can be more firmly gripped between the projection 136 and the horizontal section 196.

[0055] Referring to Figure 6(D), a concave portion 137 is formed by recessing the front surface 133 of the part facing the horizontal portion 196 toward the rear. In this way, the front end 125 shown in Figure 1(A) is held in a curved position between the horizontal portion 196 and the concave portion 137, thus allowing the front end 125 to be held more firmly.

[0056] The configurations shown in Figures 6(A) to 6(D) can be applied to all connection parts shown in Figure 1. Specifically, these connection configurations can be applied to the connection structure between the front terminal 123 and the first front terminal section 191 shown in Figure 1(A), the connection structure between the rear terminal 124 and the first rear terminal section 193 shown in Figure 1(B), and the connection structure between the rear terminal 126 and the second rear terminal section 194.

[0057] Referring to Figure 7, another configuration of the connection between the horizontal section 196 and the front end 125 will be described. Here, the distance L10 between the front surface 133 of the base 131 and the rear surface of the horizontal section 196 is longer than the width of the front end 125. In this way, the front end 125 is inserted between the front surface 133 and the horizontal section 196. Even with this configuration, the horizontal section 196 and the front end 125 can be electrically connected and the front end 125 can be fixed by soldering. Furthermore, even with this configuration, the front end 125 can be temporarily fixed in place during the manufacturing process by being inserted between the front surface 133 and the horizontal section 196. Moreover, this configuration can be applied to all connection parts shown in Figure 1.

[0058] Based on Figures 1 to 3, and with reference to the above-mentioned figures, a method for manufacturing the coil device 10 having the configuration shown in Figure 1, etc., will be explained.

[0059] Referring to Figure 2, a first coil 121 and a second coil 122 are wound around the core 11. Furthermore, a front terminal 123 and a rear terminal 124 are formed at the front and rear ends of the first coil 121 by unwinding the wire. Similarly, a front terminal 125 and a rear terminal 126 are formed at the front and rear ends of the second coil 122 by unwinding the wire.

[0060] Referring to Figures 2 and 3, the core 11 is assembled into the base 13 from above. At this time, the protruding portion 140 of the base 13 is inserted into the central opening of the core 11. The lower portions of the coil 12, coil portions 127 and 128, are housed in the storage areas 138A and 138B of the base 13. Terminal portions 19 for connecting each end of the coil 12 are pre-assembled on the base 13, and a predetermined gap L10 is provided between the horizontal portion 196 of each terminal and the opposing surface of the base.

[0061] Referring to Figure 1(A), the front terminal 123 is sandwiched or inserted between the horizontal portion 196 of the first front terminal portion 191 and the front surface of the base 131. Furthermore, a soldering iron is pressed against the front terminal 123 and the horizontal portion 196 to melt the resin film covering the periphery of the front terminal 123, and then soldering is performed. This electrically connects the front terminal 123 and the first front terminal portion 191. Similarly, the horizontal portion 196 of the second front terminal portion 192 and the front terminal 125 are electrically connected by the same process.

[0062] Referring to Figure 1(B), connect the first rear terminal section 193 and the rear terminal 124 using the same procedure. Furthermore, connect the second rear terminal section 194 and the rear terminal 126.

[0063] The coil device 10 shown in Figure 1 is manufactured through the above process.

[0064] The above-described embodiment can achieve the following main effects.

[0065] Referring to Figure 4, the entire area of ​​the horizontal portion 196 of the first front terminal portion 191, etc., is housed in the terminal housing portion 141, etc., of the base 13. In other words, in front view, plan view, and side view, the horizontal portion 196 does not protrude from the terminal housing portion 141, etc. Therefore, the insulation of the first front terminal portion 191, etc., can be strengthened, and furthermore, since the first front terminal portion 191, etc., does not protrude to the outside from the base 131 of the base 13, the coil device 10 can be made smaller overall.

[0066] Referring to Figure 4, the horizontal portion 196, such as the first front terminal portion 191, can be housed in the terminal housing portion 141, etc., formed by cutting out the corner of the base 131 of the base 13.

[0067] Referring to Figure 4, intermediate processing such as bending the first front terminal portion 191 inward becomes unnecessary, thus reducing the manufacturing cost required for the coil device 10. In addition, it prevents disconnection or damage to the terminals and solder connections of the coil 12 caused by intermediate processing.

[0068] Referring to Figure 1(A), the front terminal 123, which is the end of the coil 12, can be inserted between the horizontal portion 196 of the first front terminal portion 191 and the front surface of the base 13, thus easily connecting the first coil 121 and the first front terminal portion 191. Furthermore, referring to Figure 1(A), in the manufacturing process of the coil device 10, the front terminal 123 of the first coil 121 can be temporarily fixed by inserting it between the horizontal portion 196 of the first front terminal portion 191 and the base 13, and soldering can be performed in this state. In other words, the work of winding the front terminal 123 around the horizontal portion 196 for temporary fixing can be eliminated. Moreover, this effect is the same for all connection parts shown in Figure 1.

[0069] Referring to Figure 2, the coil device 10 can be used as a line filter or the like by having a core 11, a first coil 121, and a second coil 122.

[0070] Referring to Figure 4, the entire area of ​​the horizontal portion 196, such as the first front terminal portion 191, is housed within the terminal housing portion 141 of the base 13, thereby enabling a good connection between the end of the coil 12 and the terminal portion 19 inside the terminal housing portion 141.

[0071] Although embodiments of the present invention have been described above, the present invention is not limited thereto, and modifications are possible without departing from the spirit of the invention. Furthermore, the above-described embodiments can be combined with each other.

[0072] For example, referring to Figure 1(A), a rectangular core is used as the core 11 in this embodiment, but it is also possible to use a core of other shapes as the core 11, for example, an annular core can be used as the core 11. Furthermore, it is also possible to provide only one coil and use it as an inductor.

[0073] The claims of the application on which this application is based, as of the time the patent was granted, are listed below. The claim numbers listed below correspond to the claims of this application as of the time the patent was granted. [Claim 1 of the original application as of the patent grant date] A coil having a coil portion made of a wound-formed conductor, A core having a winding portion around which the coil is wound, A base for fixing the aforementioned core, The device comprises a terminal portion electrically connected to the aforementioned coil, The base has an insertion hole that penetrates the base in the vertical direction and a terminal housing portion in which the terminal portion is housed, The terminal portion has a vertical portion that is inserted into the insertion hole and a horizontal portion that is electrically connected to the coil. The entire area of ​​the horizontal section is housed in the terminal housing section. The end of the coil is sandwiched between the horizontal portion and the base. A coil device characterized by the following features. [Claim 2 of the original application as of the patent grant date] A coil having a coil portion made of a wound-formed conductor, A core having a winding portion around which the coil is wound, A base for fixing the aforementioned core, The device comprises a terminal portion electrically connected to the aforementioned coil, The base has an insertion hole that penetrates the base in the vertical direction and a terminal housing portion in which the terminal portion is housed, The terminal portion has a vertical portion that is inserted into the insertion hole and a horizontal portion that is electrically connected to the coil. The entire area of ​​the horizontal section is housed in the terminal housing section. A gap is formed between the horizontal portion and the base for temporarily securing the ends of the coil. The end of the coil is inserted through the gap only once. A coil device characterized by the following features. [Claim 3 of the original application as of the patent grant date] The coil device according to claim 1 or 2, characterized in that the terminal housing portion is formed by cutting out a corner of the base. [Claim 4 of the original application as of the patent grant date] The coil device according to any one of claims 1 to 3, characterized in that, after connecting the coil and the terminal portion, no intermediate processing is performed to house the horizontal portion in the terminal housing portion. [Claim 5 of the original application as of the patent grant date] The core is a seamless closed magnetic core having a linear first winding portion and a second winding portion. The coil comprises a first coil wound around the first winding section and a second coil wound around the second winding section, with the winding direction opposite to that of the first coil. The coil device according to any one of claims 1 to 4, characterized in that the coil is constructed by winding a flat rectangular wire edgewise. [Claim 6 of the original application as of the patent grant date] A method for manufacturing a coil device comprising: a coil having a coil portion made of wound conductors; a core having a winding portion around which the coil is wound; a base for fixing the core; and a terminal portion electrically connected to the coil, wherein the base has a through hole penetrating the base in the vertical direction and a terminal housing portion for housing the terminal portion, and the terminal portion has a vertical portion inserted into the through hole and a horizontal portion electrically connected to the coil, the entire area of ​​the horizontal portion being housed in the terminal housing portion. A step of preparing the core around which the coil is wound and the base into which the terminal portion is incorporated, A step of incorporating the core into the base, The steps include: temporarily securing the end of the coil by clamping or inserting it between the horizontal portion and the base; A method for manufacturing a coil device, comprising the steps of electrically connecting the terminal portion and the coil. [Explanation of Symbols]

[0074] 10...Coil device, 11...Core, 12...Coil, 121...First coil, 122...Second coil, 123...Front terminal, 124...Rear terminal, 125...Front terminal, 126...Rear terminal, 127...Coil section, 128...Coil section, 13...Base, 131...Base, 132...Flat section, 133...Front, 134...Weight-removing section, 135...Insertion section, 136...Protrusion, 137...Concave section, 138A...Storage area, 138B...Storage area, 139...Insertion hole, 140...Protruding section, 141...Terminal storage Container section, 142...Terminal housing section, 143...Terminal housing section, 144...Terminal housing section, 17...Winding section, 171...First winding section, 172...Second winding section, 19...Terminal section, 191...First front terminal section, 192...Second front terminal section, 193...First rear terminal section, 194...Second rear terminal section, 195...Vertical section, 196...Horizontal section, 20...Virtual extension line, 21...Virtual extension line, 100...Coil component, 101...Core, 102...Base, 103...Mounting pin, 104...Coil body, 105...End

Claims

1. A coil having a coil portion made of a wound-formed conductor, A core having a winding portion around which the coil is wound, A base for fixing the aforementioned core, The device comprises a terminal portion electrically connected to the aforementioned coil, The base has an insertion hole that penetrates the base in the vertical direction and a terminal housing portion in which the terminal portion is housed, The terminal portion has a vertical portion that is inserted into the insertion hole and a horizontal portion that is electrically connected to the coil. The end of the coil is sandwiched between the horizontal portion and the base. A coil device characterized by the following features.

2. A coil having a coil portion made of a wound-formed conductor, A core having a winding portion around which the coil is wound, A base for fixing the aforementioned core, The device comprises a terminal portion electrically connected to the aforementioned coil, The base has an insertion hole that penetrates the base in the vertical direction and a terminal housing portion in which the terminal portion is housed, The terminal portion has a vertical portion that is inserted into the insertion hole and a horizontal portion that is electrically connected to the coil. A gap is formed between the horizontal portion and the base for temporarily securing the ends of the coil. The end of the coil is inserted through the gap only once. A coil device characterized by the following features.

3. The core is a seamless closed magnetic core having a linear first winding portion and a second winding portion. The coil comprises a first coil wound around the first winding section and a second coil wound around the second winding section and having a winding direction opposite to that of the first coil. The coil device according to claim 1 or 2, characterized in that the coil is constructed by winding a flat rectangular wire edgewise.

4. A method for manufacturing a coil device comprising: a coil having a coil portion made of wound conductors; a core having a winding portion around which the coil is wound; a base for fixing the core; and a terminal portion electrically connected to the coil, wherein the base has a through hole penetrating the base in the vertical direction and a terminal housing portion for housing the terminal portion, and the terminal portion has a vertical portion inserted into the through hole and a horizontal portion electrically connected to the coil. A step of preparing the core around which the coil is wound and the base into which the terminal portion is incorporated, A step of incorporating the core into the base, The steps include: temporarily securing the end of the coil by clamping or inserting it between the horizontal portion and the base; A method for manufacturing a coil device, comprising the steps of electrically connecting the terminal portion and the coil.

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