Coil device and manufacturing method thereof

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 manufacturing method thereof, and more particularly to a coil device having a terminal portion for external connection and a manufacturing method thereof. [Background technology]

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

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

[0004] The base 102 is made of synthetic resin and has a shape that allows the core 101 to be accommodated therein. Mounting pins 103 are disposed at the four corners of the base 102.

[0005] Two coil bodies 104 made of edgewise wound rectangular wire are wound around the core 101. Here, the winding axis of the coil body 104 is approximately parallel to the mounting surface of the coil component 100. 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 a corner of the base 102.

[0006] Moreover, a configuration similar to the coil device 100 described in Patent Document 1 is also described in Non-Patent Document 1. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Design Registration No. 1425406 [Non-patent literature]

[0008] [Non-Patent Document 1] Tohoku Bureau of Economy, Trade and Industry, FY2010 Strategic Basic Technology Advancement Support Project "Development of Production Technology for Common Mode Line Filters for Electric Vehicles" Research and Development Results Report (https: / / www.chusho.meti.go.jp / keiei / sapoin / portal / seika / 2010 / 22h-111.pdf) [Retrieved October 7, 2020] Summary of the Invention [Problem to be solved by the invention]

[0009] However, the coil device 100 having the above-described configuration has room for improvement in terms of its configuration and manufacturing method.

[0010] Specifically, the vertically extending lower portion of mounting pin 103 is used for plug mounting, and the horizontally extending upper portion has end 105 soldered to it. Here, since mounting pins 103 are arranged at the four corners of base 102, if the upper portions of mounting pins 103 protrude in the left-right direction, there is a problem that the area required for mounting coil component 100 becomes large.

[0011] Furthermore, in the manufacturing process, when connecting the end 105 to the mounting pin 103, a temporary connection is made by wrapping the end 105 around the upper part of the mounting pin 103, and then the solder connection is made. However, the wrapping work of the end 105 is not easy, which poses a problem of increasing manufacturing costs.

[0012] The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide a coil device in which the configuration of a terminal portion for external connection is optimized, and a manufacturing method thereof. [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, wherein the terminal portion faces the base and has an opposing portion electrically connected to the coil, and an end of the coil is clamped between the opposing portion and the base.

[0014] In addition, 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, wherein the terminal portion faces the base and has an opposing portion electrically connected to the coil, and a gap is formed between the opposing portion and the base for temporarily fixing the terminal of the coil, and the terminal of the coil is inserted through the gap only once.

[0015] In addition, in the coil device of the present invention, the core is a continuous closed magnetic core having linear first and second winding portions, and the coil has a first coil wound around the first winding portion and a second coil wound around the second winding portion and having an opposite winding direction to the first coil, and the coil is constructed by edgewise winding a rectangular wire.

[0016] The present invention also provides a method for manufacturing a coil device comprising 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 terminal portion facing the base and having an opposing portion electrically connected to the coil, the method comprising the steps of: preparing the core around which the coil is wound and the base into which the terminal portion is incorporated; incorporating the core into the base; temporarily fixing the terminals of the coil by clamping or inserting them between the opposing portion and the base; and electrically connecting the terminal portion and the coil. Effect of the Invention

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

[0018] Furthermore, 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 can be easily connected to the terminal portion.

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

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

[0021] [Figure 1] 1A and 1B are diagrams showing a coil device according to an embodiment of the present invention, in which (A) is a perspective view of the coil device as seen from the front, and (B) is a perspective view of the coil device as seen from the rear. [Diagram 2] FIG. 2 is a diagram showing a coil device according to an embodiment of the present invention, and is a perspective view showing a core and a coil after the coil is wound. [Diagram 3] 1A and 1B are diagrams showing a base of a coil device according to an embodiment of the present invention, in which (A) is a perspective view of the base as seen from the front, and (B) is a perspective view of the base as seen from the rear. [Figure 4] 2 is a top view showing a base of a coil device according to an embodiment of the present invention; FIG. [Diagram 5] 1A to 1D are diagrams showing a coil device according to an embodiment of the present invention, in which (A), (B), (C) and (D) are diagrams showing the configurations of the front surface of the base at the connection portion of the terminal portion. [Figure 6]1A to 1D are diagrams showing a coil device according to an embodiment of the present invention, in which (A), (B), (C) and (D) are diagrams showing the configurations of the front surface of the base at the connection portion of the terminal portion. [Figure 7] 1 is a diagram showing a coil device according to an embodiment of the present invention, illustrating the configuration of the front surface of the base at the connection portion of the terminal portion. FIG. [Figure 8] FIG. 1 is a perspective view showing a coil device according to the background art. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] A coil device 10 according to an embodiment of the present invention and a method for manufacturing the same will be described in detail below with reference to the drawings. In the following description, the same members are generally designated by the same reference numerals, and repeated description will be omitted.

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

[0024] 1(A) and 1(B), the coil device 10 mainly includes a core 11, a coil 12, a base 13, and a terminal portion 19. The coil device 10 can be used as, for example, a line filter, a noise filter, a common mode noise filter, a transformer, or the like. The coil device 10 is a mounting component that is mounted on a mounting surface of a mounting board or the like. The mounting structure of the coil device 10 can be implemented by plugging or soldering, or the like. As described later, the first coil 121 and the second coil 122 that constitute the coil 12 are wound with conductors substantially parallel to the mounting surface of the coil device 10.

[0025] The core 11 has a generally rectangular frame shape when viewed from above. Amorphous alloys, silicon steel plates, magnetic materials such as ferrite, etc. can be used as the material of the core 11. Details of the core 11 will be described later with reference to FIG.

[0026] Coil 12 is made of a wound conductive wire. Specifically, coil 12 is made of a rectangular wire wound edgewise. The surface of the conductive wire constituting coil 12 is coated with a thin resin film (e.g., a film made of urethane resin). As will be described later with reference to FIG. 2, coil 12 is made of a first coil 121 and a second coil 122.

[0027] The base 13 is a member made of synthetic resin or the like that is configured so as to be able to fix the core 11, and the configuration thereof will be described later with reference to FIG.

[0028] The terminal portion 19 is a connecting means electrically connected to the coil 12 and disposed at the lower end of the coil device 10. The terminal portion 19 is formed by bending a conductor made of copper, aluminum, or the like. Specifically, the terminal portion 19 has a first front side terminal portion 191 connected to the front side terminal 123 of the first coil 121, a second front side terminal portion 192 connected to the front side terminal 125 of the second coil 122, a first rear side terminal portion 193 connected to the rear side terminal 124 of the first coil 121, and a second rear side terminal portion 194 connected to the rear side terminal 126 of the second coil 122. Details of each of these terminal portions 19 will be described with reference to FIG. 4 and the like.

[0029] 1(A), first front terminal portion 191 has vertical portion 195 and horizontal portion 196. Vertical portion 195 passes through base 13 in the up-down direction and is led out downward. Front terminal 123 is sandwiched or inserted between horizontal portion 196 and the front surface of seat 131 of base 13. Furthermore, the connection portion between horizontal portion 196 and front terminal 123 is welded by solder (not shown). Such a connection structure is also the same for second front terminal portion 192, first rear terminal portion 193, and second rear terminal portion 194.

[0030] FIG. 2 is a perspective view showing the core 11 and the coil 12. As shown in FIG.

[0031] The core 11 is a continuous closed magnetic core having, as the winding portion 17, a linear first winding portion 171 and a linear second winding portion 172. The first winding portion 171 and the second winding portion 172 are substantially horizontal to the mounting surface of the coil device 10 (not shown).

[0032] The coil 12 has a first coil 121 wound around a first winding portion 171, and a second coil 122 wound around a second winding portion 172 and having an opposite winding direction to the first coil 121. The first coil 121 and the second coil 122 have the same cross-sectional shape (conductor width, conductor thickness) and number of turns of the conductor. 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. In addition, the coil portion 127 and the coil portion 128 are approximately horizontal to the mounting surface of the coil device 10, not shown here.

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

[0034] Second coil 122 has coil portion 128 made of a conductor wire wound around second winding portion 172, front terminal 125 formed by unwinding the conductor wire at the front end portion of coil portion 128, and rear terminal 126 formed by unwinding the conductor wire at the rear end portion of coil portion 128. Coil portion 127 and coil portion 128 have approximately the same outer diameter and outer circumferential length.

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

[0036] 3(A) and 3(B), the base 13 mainly includes a seat 131, a protruding portion 140, and a storage area 138A. The base 13 is made of an integrally molded synthetic resin. The core 11 shown in FIG. 2 is fixed to the upper surface of the seat 131.

[0037] The base 131 has a generally rectangular shape when viewed from above, and is a portion that supports the above-described core 11. The upper surfaces of the front center portion and the rear center portion of the base 131 are formed as flat portions 132.

[0038] The protruding portion 140 is formed by protruding upward so as to be vertically long in the front-rear direction from the central portion in the left-right direction of the base 131. The protruding portion 140 is fitted into the central opening of the core 11 shown in FIG.

[0039] The recessed portions 134 are formed by partially recessing the surface of the base 13 into a substantially elliptical shape. Here, the recessed portions 134 are formed in the flat portion 132, the storage area 138A, and the storage area 138B. By forming the recessed portions 134, the amount of resin required to manufacture the base 13 can be reduced, leading to lower costs.

[0040] The insertion portion 135 is a portion formed by partially protruding the front side surface and the rear side surface of the base 131. The insertion portion 135 is provided with an insertion hole 139 that passes through the insertion portion 135 in the vertical direction, and a vertical portion 195 of the terminal portion 19 described later is inserted and fixed into the insertion hole 139. In other words, the insertion portion 135 is a part of the base 131, and is a portion through which the vertical portion 195 of the terminal portion 19 is inserted in the vertical direction.

[0041] Storage area 138A and storage area 138B are areas formed by recessing the upper surface of base 131, and store lower parts of coil portion 127 and coil portion 128 of coil 12 shown in FIG.

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

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

[0044] Here, terminal accommodating portion 141 is a portion formed by cutting out the front left corner of base 13, and is an area surrounded by imaginary extension line 20 extending leftward from the front side edge of pedestal 131 and imaginary extension line 21 extending forward from the left side edge of pedestal 131. The same applies to terminal accommodating portion 142, terminal accommodating portion 143, and terminal accommodating portion 144.

[0045] In this embodiment, the entire area of ​​the horizontal portion 196 of the first front terminal portion 191 is accommodated in the terminal accommodating portion 141. That is, when the base 13 is viewed from above, when the base 13 is viewed from the front, and when the base 13 is viewed from the left, the entire area of ​​the horizontal portion 196 is accommodated in the terminal accommodating portion 141. That is, when viewed from any of these directions, the horizontal portion 196 does not protrude outward from the side surface of the base 131.

[0046] Similarly, the entire areas of horizontal portions 196 of second front terminal portion 192, first rear terminal portion 193 and second rear terminal portion 194 are accommodated in terminal accommodating portions 142, 143 and 144, respectively.

[0047] By doing this, 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 periphery of the pedestal 131 of the base 13, thereby reducing the area required for mounting the coil device 10 and further preventing the mounted coil device 10 from shorting out with other electronic devices.

[0048] 5(A), 5(B), 5(C) and 5(D) are diagrams showing the configurations of the front surface of the base at the connection portion of the terminal portion. In each diagram of Fig. 5, the front terminal 123 shown in Fig. 1(A) is sandwiched between the base 131 and the horizontal portion 196.

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

[0050] 5(C), the insertion portion 135 and the horizontal portion 196 may be disposed so that the tip of the horizontal portion 196 faces inward in the left-right direction. Also, referring to FIG. 5(D), the insertion portion 135 and the horizontal portion 196 may be disposed so that the horizontal portion 196 extends in the front-rear direction.

[0051] 6(A), 6(B), 6(C) and 6(D) are diagrams showing various forms of the front surface 133 of the pedestal 131 of the base 13 and the related configuration of the horizontal portion 196. In each diagram of Fig. 6, the front terminal 125 shown in Fig. 1(A) is sandwiched between the front surface 133 and the horizontal portion 196.

[0052] 6(A), front surface 133 and horizontal portion 196 of base 131 are approximately parallel to each other. Moreover, distance L10 between front surface 133 and horizontal portion 196 is set to be equal to or less than the width (thickness) of front terminal 125. In this manner, front terminal 125 can be sandwiched between front surface 133 and horizontal portion 196 in the manufacturing process.

[0053] 6(B), here, front surface 133 is inclined with respect to horizontal portion 196. Specifically, front surface 133 is an inclined surface that inclines backward toward the right, which is the outer side in the left-right direction. In this way, front terminal 125 shown in FIG. 1(A) can be suitably held between front surface 133, which is an inclined surface, and horizontal portion 196.

[0054] 6(C), here, the front surface 133 facing the horizontal portion 196 is partially protruded forward to form the protrusion 136. The protrusion 136 may be formed in a dot shape, or in a linear shape extending continuously in the left-right direction. The tip of the protrusion 136 may be disposed in the vicinity of the horizontal portion 196, or may be in contact with the horizontal portion 196. In this way, the front terminal 125 shown in FIG. 1(A) can be more firmly held between the protrusion 136 and the horizontal portion 196.

[0055] 6(D), here, the front surface 133 of the portion facing the horizontal portion 196 is recessed toward the rear to form the concave portion 137. In this way, the front terminal 125 shown in FIG. 1(A) is sandwiched in a curved state between the horizontal portion 196 and the concave portion 137, so that the front terminal 125 can be more firmly sandwiched.

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

[0057] With reference to FIG. 7, another embodiment of the portion where the horizontal portion 196 and the front terminal 125 are connected will be described. Here, the distance L10 between the front surface 133 of the base 131 and the rear surface of the horizontal portion 196 is longer than the width of the front terminal 125. In this manner, the front terminal 125 is inserted between the front surface 133 and the horizontal portion 196. Even with this configuration, the horizontal portion 196 and the front terminal 125 can be electrically connected and the front terminal 125 can be fixed by welding with solder. Also, even with this configuration, the front terminal 125 can be temporarily fixed by being inserted between the front surface 133 and the horizontal portion 196 in the manufacturing process. Furthermore, this configuration can be applied to all the connection portions shown in FIG. 1.

[0058] Based on FIGS. 1 to 3 and with reference to the above-mentioned drawings, a method for manufacturing the coil device 10 having the configuration shown in FIG. 1 etc. will be described.

[0059] 2, a first coil 121 and a second coil 122 are wound around the core 11. A front end and a rear end of the first coil 121 are formed by unwinding the conductor wire to form a front terminal 123 and a rear terminal 124. A front end and a rear end of the second coil 122 are formed by unwinding the conductor wire to form a front terminal 125 and a rear terminal 126.

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

[0061] 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 further solder welding is performed. This electrically connects the front terminal 123 and the first front terminal portion 191. Furthermore, by a similar process, the horizontal portion 196 of the second front terminal portion 192 and the front terminal 125 are electrically connected.

[0062] 1(B), in a similar process, first rear terminal portion 193 is connected to rear end 124. Furthermore, second rear terminal portion 194 is connected to rear end 126.

[0063] Through the above steps, the coil device 10 shown in FIG. 1 is manufactured.

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

[0065] 4, the entire area of ​​horizontal portion 196 of first front terminal portion 191 etc. is accommodated in terminal accommodating portion 141 etc. of base 13. In other words, horizontal portion 196 does not protrude from terminal accommodating portion 141 etc. in front view, plan view, and side view. This makes it possible to enhance the insulation of first front terminal portion 191 etc., and further, since first front terminal portion 191 etc. do not protrude to the outside from seat 131 of base 13, the coil device 10 can be made smaller overall.

[0066] 4, the horizontal portions 196 of the first front terminal portion 191 and the like can be housed in the terminal housing portions 141 and the like formed by cutting out corners of the seat 131 of the base 13. As shown in FIG.

[0067] 4, since intermediate processing such as bending the first front side terminal portion 191 etc. inward is not required, it is possible to reduce the manufacturing cost required for manufacturing the coil device 10. In addition, it is possible to prevent breakage or damage to the terminals and solder connections of the coil 12 caused by adding intermediate processing.

[0068] 1(A), the front terminal 123, which is the terminal 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, so that the first coil 121 and the first front terminal portion 191 can be easily connected. Furthermore, referring to FIG. 1(A), in the manufacturing process of the coil device 10, the front terminal 123 of the first coil 121 is inserted between the horizontal portion 196 of the first front terminal portion 191 and the base 13 to perform temporary fixing, and in this state, solder connection can be performed. That is, the work of winding the front terminal 123 around the horizontal portion 196 for temporary fixing can be eliminated. Furthermore, the effect is the same for all the connection portions shown in FIG. 1.

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

[0070] Referring to Figure 4, the entire area of ​​the horizontal portion 196 of the first front terminal portion 191, etc. is entirely accommodated in the terminal accommodating portion 141, etc. of the base 13, thereby enabling a good connection between the terminal of the coil 12 and the terminal portion 19 inside the terminal accommodating portion 141, etc.

[0071] Although the embodiment of the present invention has been described above, the present invention is not limited to this, and modifications can be made without departing from the scope of the present invention. In addition, the above-described embodiments can be combined with each other.

[0072] 1(A), in this embodiment, a rectangular core is used as the core 11, but it is also possible to use a core with another shape as the core 11, for example, it is also possible to use an annular core as the core 11. Also, 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 are listed below. The claim numbers listed in the appendix are the same as those of the claims of this application at the time of the allowance. [Claim 1 at the time of the allowance of the original application] a coil having a coil portion made of a wound conductive wire; a core having a winding portion around which the coil is wound; A base for fixing the core; A terminal portion electrically connected to the coil, the base has an insertion hole penetrating the base in a vertical direction and a terminal accommodating portion in which the terminal portion is accommodated, the terminal portion has a vertical portion inserted into the insertion hole and a horizontal portion electrically connected to the coil, the horizontal portion has an entire area accommodated in the terminal accommodating portion, The terminal of the coil is sandwiched between the horizontal portion and the base. A coil device comprising: [Claim 2 at the time of the allowance of the original application] a coil having a coil portion made of a wound conductive wire; a core having a winding portion around which the coil is wound; A base for fixing the core; A terminal portion electrically connected to the coil, the base has an insertion hole penetrating the base in a vertical direction and a terminal accommodating portion in which the terminal portion is accommodated, the terminal portion has a vertical portion inserted into the insertion hole and a horizontal portion electrically connected to the coil, the horizontal portion has an entire area accommodated in the terminal accommodating portion, a gap is formed between the horizontal portion and the base for temporarily fixing an end of the coil; The end of the coil passes through the gap only once. A coil device comprising: [Claim 3 at the time of the allowance of the original application] 3. The coil device according to claim 1, wherein the terminal accommodating portion is formed by cutting out a corner of the base. [Claim 4 at the time of the allowance of the original application] 4. The coil device according to claim 1, wherein after the coil and the terminal portion are connected, no intermediate processing is performed to accommodate the horizontal portion in the terminal accommodating portion. [Claim 5 at the time of the allowance of the original application] the core is a continuous closed magnetic core having a linear first winding portion and a linear second winding portion, The coil includes a first coil wound around the first winding portion and a second coil wound around the second winding portion and having a winding direction opposite to that of the first coil, 5. The coil device according to claim 1, wherein the coil is configured by edgewise winding a rectangular wire. [Claim 6 at the time of the allowance of the original application] a coil device including 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 having an insertion hole penetrating the base in the vertical direction and a terminal accommodating portion for accommodating the terminal portion, the terminal portion having a vertical portion inserted into the insertion hole and a horizontal portion electrically connected to the coil, the entire area of ​​the horizontal portion being accommodated in the terminal accommodating portion, preparing the core around which the coil is wound and the base to which the terminal portion is assembled; incorporating the core into the base; a step of temporarily fixing an end of the coil by clamping or inserting the end of the coil between the horizontal portion and the base; and a step 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 portion, 128...coil portion, 13...base, 131...pedestal, 132...flat portion, 133...front surface, 134...thin portion, 135...insertion portion, 136...projection portion, 137...recessed portion, 138A...storage area, 138B...storage area, 139...insertion hole, 140...projection portion, 141...terminal holder Receptacle portion, 142...terminal accommodating portion, 143...terminal accommodating portion, 144...terminal accommodating portion, 17...winding portion, 171...first winding portion, 172...second winding portion, 19...terminal portion, 191...first front terminal portion, 192...second front terminal portion, 193...first rear terminal portion, 194...second rear terminal portion, 195...vertical portion, 196...horizontal portion, 20...virtual extension line, 21...virtual extension line, 100...coil component, 101...core, 102...base, 103...mounting pin, 104...coil body, 105...terminal

Claims

1. a coil having a coil portion made of a wound conductive wire; a core having a winding portion around which the coil is wound; A base for fixing the core; A terminal portion electrically connected to the coil, the terminal portion has a facing portion facing the base and electrically connected to the coil, The terminal of the coil is sandwiched between the facing portion and the base. A coil device comprising:

2. a coil having a coil portion made of a wound conductive wire; a core having a winding portion around which the coil is wound; A base for fixing the core; A terminal portion electrically connected to the coil, the terminal portion has a facing portion facing the base and electrically connected to the coil, a gap is formed between the facing portion and the base for temporarily fixing an end of the coil; The end of the coil passes through the gap only once. A coil device comprising:

3. the core is a continuous closed magnetic core having a linear first winding portion and a linear second winding portion, The coil includes a first coil wound around the first winding portion and a second coil wound around the second winding portion and having a winding direction opposite to that of the first coil, 3. The coil device according to claim 1, wherein the coil is formed by edgewise winding a rectangular wire.

4. A method for manufacturing a coil device comprising: a coil having a coil portion made of a wound conductive wire; 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 terminal portion facing the base and having an opposing portion electrically connected to the coil, preparing the core around which the coil is wound and the base to which the terminal portion is assembled; incorporating the core into the base; a step of temporarily fixing an end of the coil by clamping or inserting the end of the coil between the facing portion and the base; and a step of electrically connecting the terminal portion and the coil.

Images