JP6673515B2 - Antenna coil device - Google Patents

Description

  The present invention relates to an antenna coil device suitably used for removing noise superimposed on a radio signal in a vehicle, for example.

  Conventionally, in order to listen to a radio broadcast or a television broadcast in a car, a heating wire of a defogger provided in a rear window and an antenna wire provided around the heating wire are used to receive a radio broadcast or a television broadcast. An automotive glass antenna is known.

  A radio signal of a radio broadcast or a television broadcast received by such an automobile glass antenna is often affected by noise included in a battery output for supplying power to a heating wire of the defogger. It may leak to the body or the DC power supply side via the power supply line connecting the battery.

  For this reason, when an automobile glass antenna is used, an antenna coil is placed between the automobile glass antenna and the body or a DC power supply in order to suppress superposition of noise on the received signal and signal leakage to a body or the like. Insert a choke coil called a device, set it to a unique self-resonant frequency, generate high impedance according to the frequency band of signal radio waves, and remove noise superimposed on radio wave signals and signals leaking to the body etc. Techniques for removing are known.

  Various structures have been proposed as a specific structure of such an antenna coil device. For example, from the viewpoint of securing strength against vibration received from an automobile, a longitudinal direction of a coil formed in a solenoid shape is considered. Patent Literature 1 below describes a configuration in which two relatively thick terminal plates are provided along the line and a resin base member that integrally holds the two terminal plates and the coil is provided. Things have been proposed.

  FIGS. 17A, 17B, and 17C show an antenna coil device 310 described in Patent Document 1 below. The antenna coil device 310 includes a winding coil 316 having first and second end portions 311a and 311b, a magnetic core 312 inserted through the inside of the winding coil 316, and one end of the winding coil 316. The connector terminal 313 to which the portion 311a is connected is connected to the other end 311b of the winding coil 316, and the first mounting surface 314a, the second mounting surface 314b, and the first and second mounting surfaces. A mounting terminal 314 having a main body 314c integrally connected to the surface, and a resin member 317 having a mounting surface 317c and 318c on which the mounting terminal 314 is mounted and the winding coil 316 is mounted. 318. These resin members 317 and 318 are divided and formed as a first resin member 317 and a second resin member 318. The arrangement of at least one of the first resin member 317 and the second resin member 318 can be changed on the main body.

JP 2008-109484 A

  However, in such a product structure, both ends 311a and 311b of the winding coil 316 protrude from the left and right sides of the magnetic core 312 so as to be parallel to the mounting surface. At the time of soldering, the soldering work of the other end 311b cannot be performed unless the antenna coil device is rotated by 180 ° after the soldering work of the one end 311a is completed, so that the man-hour increases and the production efficiency decreases. There is a problem in doing so.

  When both ends 311a and 311b of the winding coil 316 are pulled out in the longitudinal direction of the magnetic core 312 (one end is in the front direction and the other end is in the rear direction), the antenna in this front and rear direction is provided. The length of the coil device becomes too large, which is disadvantageous in terms of miniaturization.

  The present invention has been made in view of such circumstances, and has as its object to provide an antenna coil device capable of improving production efficiency and promoting miniaturization of the device.

In order to solve the above problems, an antenna coil device according to the present invention has the following features.
The antenna coil device according to the present invention,
A magnetic core,
A coil formed by winding a wire having an insulating film around the magnetic core;
A resin base member for mounting the magnetic core and the coil,
An antenna coil device having a mounting terminal formed integrally with the resin base member, and a connector terminal attached to the resin base member,
In a state where the connector terminal and the mounting terminal are not in contact with each other in the resin base member, a plate-shaped intermediate portion of the connector terminal and a mounting end of the mounting terminal are respectively parallel to the mounting surface. And the connector terminals are arranged in two layers, and the connector terminal is disposed at a position opposite to the mounting surface with the mounting terminal interposed therebetween,
The resin base member is provided with an opening having an axis in a direction perpendicular to the mounting surface, and an end extending downward at one of both ends of the coil is formed by a notch of the mounting terminal at the opening. Configured to be electrically connected to the electrical connection,
Further, the other laterally extending end of the both ends of the coil is an electrical connection branched laterally from a rising portion located between a mounting end of the connector terminal and a base at an upper portion of the resin base member. Is configured to be electrically connected to the upward notch of the part,
A first arm portion and a second arm portion are formed on both sides of the root portion of the connector terminal, and a claw portion for engaging an engagement portion of a resin base member is provided at a tip of the both arm portions. It is characterized by the following.

  Further, it is preferable that the mounting terminal has an exposed portion exposed from the resin base member.

Preferably, an oval opening is formed in the middle of the mounting terminal.
It is preferable that a part of the oval opening of the mounting terminal is exposed to the outside of the resin base member.

  Further, areas other than the respective end areas of the connector terminal and the mounting terminal of the antenna coil device are covered with a mold resin portion, and the resin of the mold resin portion is exposed to the exposed portion of the oval opening. It is preferable to be in a state of entering.

  ADVANTAGE OF THE INVENTION According to the antenna coil device of this invention, since the intensity | strength of a connector terminal, a mounting terminal, and a resin base member increases, it becomes the structure which is hard to be damaged also by the stress generate | occur | produced between a connector terminal and a mounting terminal.

According to an antenna coil device and a method of manufacturing the same according to a reference example described later, the resin base member is provided with the first opening and the second opening having axes in a direction orthogonal to the mounting surface. One of the two end portions is configured to be electrically connected to the mounting terminal and the connector terminal by soldering processing at the first opening and the other at the second opening. As a result, both ends of the coil are pulled out in the same direction (direction toward the mounting surface: downward in FIG. 17) through the first opening and the second opening, respectively. Can be performed simultaneously from the same direction with respect to the child, and the working time can be made more efficient.
Further, since it is not necessary to rotate the antenna coil device by 180 degrees between the two terminals during the soldering process, the number of manufacturing steps can be reduced.
Further, with such a configuration, the antenna coil device can be reduced in size as a whole.

  If the distance between the first opening and the second opening in the direction in which the mounting terminals extend is approximately equal to the width of the wound coil, both ends of the coil are pulled out through the corresponding openings. In addition to the effect of being easy, it is possible to secure a sufficient distance between the two openings, so that it is possible to avoid the risk that the other resin base member will be damaged by heat during one of the soldering operations. This has the effect.

It is the perspective view which looked at the antenna coil device concerning Reference Example 1 from the front side. FIG. 4 is an exploded perspective view of the antenna coil device according to Reference Example 1 as viewed from the front side. It is the perspective view which looked at the resin base member of the antenna coil device concerning Reference Example 1 from the front side. FIG. 3B is a cross-sectional view of the resin base member of the antenna coil device according to Reference Example 1 along the line AA in FIG. 3. A front perspective view in a state where a resin base member and a terminal portion are combined according to a comparative example and a reference example, and a stress simulation diagram of those structures ((a) is a perspective view showing a comparative example, and (b) is a stress of a comparative example). (C) is a perspective view showing a reference example, and (d) is a stress simulation figure of the reference example. FIG. 5 is a perspective view of a mounting terminal of the antenna coil device according to Reference Example 1 as viewed from the front side. FIG. 6 is a perspective view of an insert molded product of a resin base member and a mounting terminal in the antenna coil device according to Reference Example 1 as viewed from the front side. 7 is a graph showing the relationship between the length of the extended portion of the resin base member (projection length) and the safety factor (minimum safety factor) in Reference Example 1. FIG. 4 is a perspective view of a connector terminal of the antenna coil device according to Reference Example 1 as viewed from the front side. It is the perspective view which looked at the antenna coil device concerning Reference Example 2 from the front side. It is the perspective view which looked at the mounting terminal of the antenna coil device concerning Reference Example 2 from the front side. FIG. 9 is a perspective view of an insert molded product of a resin base member and a mounting terminal in the antenna coil device according to Reference Example 2 as viewed from the front side. It is the perspective view which looked at the antenna coil device concerning the embodiment of the present invention from the front side. It is the disassembled perspective view which looked at the antenna coil device concerning the embodiment of the present invention from the front side. It is the perspective view which looked at the mounting terminal of the antenna coil device concerning the embodiment of the present invention from the front side. It is the perspective view which looked at the positional relationship of the connector terminal and mounting terminal of the antenna coil device which concerns on embodiment of this invention from the front side. FIG. 1 is a perspective view showing an antenna coil device according to a conventional technique ((a) is a perspective view seen from a front side, (b) is a perspective view seen from a rear side, and (c) is an exploded perspective view seen from a front side).

  Hereinafter, an antenna coil device according to an embodiment of the present invention will be described in detail with reference to the drawings.

<Reference Example 1>
As shown in FIGS. 1 and 2, the antenna coil device 10 according to the reference example 1 includes a core 30 made of a magnetic material such as ferrite, a coil 20 having an insulating film wound around the core 30, and a core 30. A resin base member 40 on which the coil 20 is mounted, a mounting terminal 50 integrated with the resin base member 40 by insert molding, and a resin base member in the resin base member 40 in a non-contact state and in parallel with the mounting terminal 50. And a connector terminal 60 attached to the connector. Here, the surface on the mounting board to which the mounting terminals 50 are attached is referred to as a mounting surface.

  As shown in FIGS. 1, 2, 3, and 4, the resin base member 40 is basically formed as a base on which the core 30 around which the coil 20 is wound is placed. , A second opening 42 formed by an arc and a straight line, and further forward (distal direction) than the partitioning portion 44 located on the front side (projecting side of the connector terminal 60). And an extended portion 43 extended to

Further, the mounting terminal 50 is integrated by performing insert molding together with the resin base member 40, and the resin base member 40 has a first slit-shaped storage portion 45 for storing the mounting terminal 50.
Further, in order to attach the connector terminal 60 to the resin base member 40 after the insert molding, the connector terminal 60 is substantially parallel to the first slit-shaped storage portion 45 and one step higher than the first slit-shaped storage portion 45 (upward in the drawing). A second slit-shaped storage portion 46 for storing the connector terminal 60 is provided in the (direction). Further, an open portion 47 is provided as a large open space at a position communicating with the second slit-shaped storage portion 46, and the open portion 47 is defined by the partition portion 44 including the side surface and the front surface of the resin base member 40. (The rear end of the opening 47 is formed by the partition 44).
Along the partition 44, the connector terminal 60 rises in an “L” shape, and is bent again so that its tip is parallel to the mounting surface, and is formed to protrude forward from the partition 44. .

Further, a part of the resin base member 40 extends over a predetermined length along the longitudinal direction of the mounting terminal 50 protruding forward from the position of the partition portion 44, thereby forming an extension 43. That is, the extension portion 43 is a part of the resin base member 40 that is in close contact with and surrounds the mounting terminal 50 around the mounting terminal 50 (in the vertical and horizontal directions).
The extension 43 is provided as a part of the resin base member 40 for the following reason.

  That is, in order to install the antenna coil device 10 on the mounting board, when the connector terminal 60 is inserted into the mounting insertion hole of the bus bar and attached, an error in the height position of the insertion hole or when the connector terminal 60 is inserted. Due to the influence of the pressing force or the like, an upward stress perpendicular to the mounting surface is generated in the connector terminal 60. This stress is applied to the antenna coil device 10 as a whole, particularly in a region near the contact position between the mounting terminal 50 and the connector terminal 60 extending to the side where the connector terminal 60 protrudes and the resin base member 40, in the left-right direction. Intensively on both sides. The area where the stress is applied is lighter (brighter) than the density representing the original resin base member 40 (see FIGS. 5B and 5D).

As is clear from the configuration diagram (FIG. 5A) of the comparative example (without the extension 43) according to the prior art and the stress simulation diagram (FIG. 5B) thereof, In the prior art, the stress concentrates on the resin portion (partition 44) in contact with the mounting terminal 50. In particular, due to a demand for miniaturization of the device, the size and thickness of the resin base member 40 have been reduced. If this occurs, the strength is reduced, and this portion may be damaged.
Therefore, in the present embodiment, the extension 43 is formed as a part of the resin base member 40, and the stress concentrated on the resin portions corresponding to both sides of the mounting terminal 50 is dispersed to some portions. (Particularly, as shown in FIG. 5D, stress is applied to the edge of the first opening 41, and the area where the stress is applied is enlarged), so that the stress applied to each part is reduced. And This is clear from the configuration diagram of the embodiment (FIG. 5C) and the stress simulation diagram thereof (FIG. 5D) (as compared with FIG. 5B showing the conventional example). (Light (bright) areas are dispersed).

  Therefore, even when the antenna coil device 10 is reduced in size and the resin base member 40 is made thinner, the maximum stress in each part is reduced, so that it is possible to avoid the possibility of damage to the device. it can.

  FIG. 6 is a perspective view of the mounting terminal 50 as viewed from the front side. The mounting terminal 50 includes a plate-shaped intermediate portion 56, and mounting terminals 54A and 54B located on both ends before and after the intermediate portion 56 and mounted on a mounting board (not shown). A raised portion 53 is formed between the mounting terminal 54 </ b> B (the terminal located on the side opposite to the protruding side of the connector terminal 60). The raised portion 53 is formed with an electrical connection portion 52 that is electrically connected to the other end of the coil 20 by soldering. The electric connection portion 52 is a U-shaped notch formed inward from the side edge of the mounting terminal 50, such that the other end of the coil 20 can be easily inserted from the side edge direction. It is large.

  Further, when the mounting terminal 50 is integrated with the resin base member 40, the electric connection portion 52 can be visually recognized directly below the position corresponding to the second opening 42 of the resin base member 40 (through the second opening 42). Position, that is, a position exposed from the second opening 42). As described above, the other end of the coil 20 is inserted into the resin base member 40 through the second opening 42 and is disposed at a position where the coil 20 can be easily connected to the electric connection portion 52.

The raised portion 53 is formed to be substantially the same height as a base portion 63 (provided with the electrical connection portion 61: see FIG. 9) of the connector terminal 60 described later and to be parallel to the mounting surface. Have been. For this reason, in the manufacturing process of the antenna coil device 10, the molten solder is branched into at least two paths, and by using a jet-type soldering device that can solder two portions set at substantially the same height from below, Soldering of both ends of the coil 20 can be performed substantially simultaneously.
When the other end of the coil 20 is accommodated in the electric connection part 52, the opening of the second opening 42 is substantially closed when viewed from below, so that the molten solder jets Since it is not possible to invade above 52, it is possible to avoid the possibility of an electrical short-circuit caused by blowing of the molten solder.

  Further, a cutout portion 51 is provided in the intermediate portion 56 so as to correspond to the first opening portion 41 of the resin base member 40. The notch 51 is formed to be larger than the first opening 41, and the edge of the notch 51 is covered with the resin base material 40. For this reason, a solder ball formed for electrically connecting an electric connection portion 61 of a connector terminal 60 described later and one end of the coil 20 positioned at the electric connection portion 61 is formed by a solder ball of the mounting terminal 50. Since the contact with the mounting terminal 50 can be prevented in the one opening 41, the insulation between the solder and the mounting terminal 50 can be maintained, whereby the insulation between the connector terminal 60 and the mounting terminal 50 can be maintained. Can be kept.

As shown in FIGS. 6 and 7, an exposed portion 57 that protrudes further outward than the resin extension 43 is formed at the front end of the intermediate portion 56 (the protruding side of the connector terminal 60). ing.
The “exposed portion” means projecting from the resin base member 40 or the extension portion 43 to the outside, and is referred to as an “exposed portion” regardless of the amount of projection.

By the way, in order to increase the strength of the resin base member 40, and thus the antenna coil device 10, the length of the extension 43 is set to 35 to 50% of the sum of the length of the exposed portion 57 and the length of the extension 43. Is preferable. Further, it is more preferable that the length of the extension portion 43 is about 40% of the sum of the length of the exposed portion 57 and the length of the extension portion 43.
The minimum safety factor was measured for each of the 10 sample points while changing the length of the extension 43 between 0.5 mm and 9.85 mm (the exposed portion was substantially equal to 0).

FIG. 8 is a graph in which the relationship between the length of the extension 43 and the minimum safety factor is plotted by plotting each sample point obtained in this manner. As shown in the drawing, the result was obtained that the minimum safety factor was highest when the length of the extension portion 43 was 4 mm.
If the length of the extension 43 exceeds 5 mm, the minimum safety factor does not change, but the destruction mode changes from the boundary surface position between the exposed portion 57 and the extension 43 to the first opening 41 of the resin base member 40. Move to a position near the edge.
At the edge of the first opening 41, other design restrictions such as the need to increase the thickness of the resin material to ensure insulation are added. After all, it is not advisable to make the stress extremely apply to the edge of the first opening 41.

As shown in FIG. 9, the connector terminal 60 is located at the mounting end 62, at the base 63 stored in the housing 46 of the resin base member 40, and between the mounting end 62 and the base 63. , A rising portion 64 rising from the root portion 63 in an L-shape, and the root portion 63 is provided with an electrical connection portion 61 to be soldered to one end of the coil 20.
The electric connection portion 61 is a U-shaped notch formed inside the side edge of the connector terminal 60, and has a size such that one end of the coil 20 can be easily inserted from the side edge direction. It is said.

When the connector terminal 60 is attached to the resin base member 40, the electrical connection portion 61 provided at the base 63 of the connector terminal 60 corresponds to the position corresponding to the first opening 41 of the resin base member 40 (the first position). It is formed so as to be disposed at a position visible from above through the first opening 41, that is, a position exposed from the first opening 41). As described above, one end of the coil 20 is inserted into the resin base member 40 through the first opening 41, and is configured to be easily connected to the electrical connection portion 61 of the connector terminal 60 ( See FIG. 1).
Note that the electrical connection portion 61 formed of a U-shaped notch has substantially the same configuration as the electrical connection portion 52 of the mounting terminal 50.

  When one end of the coil 20 is accommodated in the electric connection portion 61, the first opening is viewed from below unless the coil 20 is accommodated in the electric connection portion 61 with a margin (so that a gap is formed). Since the opening of the molten solder 41 is substantially closed, the jet of the molten solder cannot penetrate above the electrical connection portion 61. Can be avoided.

  Next, a method for manufacturing the antenna coil device 10 according to Reference Example 1 will be described.

  First, a coil 20 is formed by winding a wire having an insulating coating around the core 30. Further, two ends of the coil 20 (one end passes through the first opening 41 and the other end passes through the second opening 42) are drawn in the same direction (below the antenna coil device 10 of the embodiment).

  The planar shape of the mounting terminal 50 described above is cut out from a metal plate material, and after a bending step, the mounting terminal 50 having a three-dimensional shape is formed. After that, the mounting terminal 50 is placed in a mold, resin is injected into the mold, and the resin base member 40 integrated with the mounting terminal 50 is formed by integral molding (insert molding). Further, a separately formed connector terminal 60 formed by bending is attached to the resin base member 40.

  Next, the core 30 around which the coil 20 is wound is placed and attached to the resin base member 40. Then, one (one end) of both ends of the coil 20 is connected to the electric connection part 61 of the connector terminal 60, and the other (the other end) is connected to the electric connection part 61 of the mounting terminal 50. Thereafter, using a jet-type soldering device having at least two branches, soldering processing is simultaneously performed on one end of the coil 20 and the electrical connection portion 61 and on the other end of the coil 20 and the electrical connection portion 52.

Finally, it is also possible to ship the product in the above-mentioned form, but it is also possible to improve the heat resistance, the strength, the insulation, and the waterproofing, etc. It is also possible to perform additional steps.
For example, it is preferable to insert the antenna coil device 10 into a tube made of a material such as glass fiber, polyolefin, fluoropolymer, thermoplastic elastomer, or PTFE (ethylene tetrafluoride resin) and having good insulation and heat resistance. Alternatively, instead of the process of inserting the antenna coil device, the antenna coil device 10 may be reloaded into a mold, and a resin may be injected into the mold to form a mold resin portion capable of ensuring insulation and heat resistance. It is possible.

<Reference Example 2>
As shown in FIG. 10, the antenna coil device 110 according to the reference example 2 differs from the antenna coil device 10 according to the reference example 1 in basic elements except for the shape of the mounting terminal 150 described below (see FIG. 11). It is formed similarly. The reference numerals assigned to the respective elements used in the reference example 2 are represented by adding 100 to the reference numerals assigned to the corresponding elements of the reference example 1.

That is, in Reference Example 2, as shown in FIG. 11, an oval opening 158 that is not provided in Reference Example 1 is formed in the intermediate portion 156 of the mounting terminal 150.
As shown in FIG. 12, after the resin base member 140 and the mounting terminal 150 are integrally formed by insert molding, the entirety of the elliptical opening 158 is filled with the resin base member 40, and The portion is in a state of a resin column exposed from the resin base member 40 as one region of the exposed portion 157.

  As described above, in the reference example 2, during the insert molding with the resin base member 140, the resin flows into the whole of the elliptical opening 158, so that the front side of the extension part 143 (the protruding side of the connector part 160). A resin pillar is formed in the portion, and the bonding strength between the exposed portion 157 and the extension portion 143 is further increased, and the strength against the above-described stress can be increased.

<Embodiment>
Regardless of the solution method such as reduction in the number of processes and significant size reduction, as a solution to the problem of increasing the strength of these terminals so that they are not easily damaged by the stress generated between the connector terminals and the mounting terminals The antenna coil device 210 of the embodiment of the present invention is effective.
Hereinafter, the antenna coil device 210 according to the embodiment of the present invention will be described. Note that the reference numerals assigned to the respective elements used in this embodiment are represented by adding 200 to the reference numerals assigned to the corresponding elements in Reference Example 1.

  By the way, the conventional technique shown in FIG. 17 has the following problems in addition to the above-mentioned problems. That is, in order to install the antenna coil device 310 on the mounting substrate, when the connector terminal 313 is inserted into the mounting insertion hole of the bus bar and attached, an error in the height position of the insertion hole or when the connector terminal 313 is inserted. Due to the influence of the pressing force or the like, a stress in a direction perpendicular to the mounting surface is generated between the connector terminal 313 and the mounting terminal 314 fixed to the mounting board. This stress concentrates on the entire antenna coil device 310, particularly on both ends in the width direction of the mounting terminals 314 extending to the side where the connector terminals 313 protrude and the corresponding resin members 317 and 318.

  On the other hand, in response to a demand for miniaturization of the antenna coil device 310, the area and thickness of the resin base members 317 and 318 have been significantly reduced, and in particular, the resin members 317 and 318 formed so as to cover the mounting terminals 314. Since the thickness for covering both end portions in the width direction of the mounting terminal 314 and the connector terminal 313 decreases, these portions may be damaged by the above-described stress.

  In addition, some antenna coil devices 310 do not accommodate in a resin tube and do not cover with a mold resin. In such an antenna coil device 310, the strength of the connector terminals 313 and the mounting terminals 314 may be increased. The need is even greater.

  Therefore, in the antenna coil device 210 according to the embodiment of the present invention, the connector terminal and the mounting terminal, and the resin base member 240 are hardly damaged by the stress generated between the connector terminal 260 and the mounting terminal 250. Try to increase the strength.

  As shown in FIGS. 13 and 14, the antenna coil device 210 of the present embodiment is integrally formed with the core 230, the coil 220 wound around the core 230, the resin base member 240, and the resin base member 240 by insert molding. And the connector terminal 260 attached to the resin base member 240 after the molding. Here, the surface to which the mounting terminals 250 are attached is referred to as a mounting surface.

  FIG. 15 is a perspective view of the mounting terminal 250. The mounting terminal 250 includes a plate-shaped intermediate portion 256 and mounting terminals 254A and 254B that are fixed to a mounting surface (not shown) and are electrically connected to each end of the intermediate portion 256. A raised portion 253 is formed between the mounting terminal 256 and the mounting terminal 254B (the terminal located on the side opposite to the protruding side of the connector terminal 260). An electrical connection portion 252 that is electrically connected to the other end of the coil 220 by soldering is formed in the raised portion 253. The electric connection portion 252 is a U-shaped notch formed inside the side edge of the mounting terminal 250, and easily inserts the other end of the coil 220 from the side edge direction (above). It is sized to obtain.

  Further, at a position corresponding to the opening 242 of the resin base member 240, the electric connection portion 252 is formed so as to be exposed from the opening. For this reason, the other end of the coil 220 is drawn downward from this opening and is configured to be connected to the electric connection portion 252 by soldering.

The raised portion 253 is formed at a position higher than the intermediate portion 256. For this reason, the insulation distance of the solder ball attached to the electrical connection part 252 from the mounting surface can be secured, and the possibility of an electrical short can be avoided.
In addition, except when the other end of the coil 220 is accommodated in the notch with a margin (so that a gap is formed) in the electric connection part 252, the opening 242 is substantially closed when viewed from below. Therefore, when soldering is performed by using a jet-flow type soldering apparatus and using a jet of molten solder, it becomes difficult for the solder jet to penetrate above the electrical connection portion 252, and the molten solder blows up. This can avoid the possibility of an electric short circuit caused by the above.

  In addition, the electric connection portion 252 formed of a notch for housing the other end of the coil 220 can function as a reference position for positioning the other end of the coil 200 together with the opening 242 of the resin base member 240. It is.

As shown in FIG. 15, an exposed portion 257 is provided on the front side of the intermediate portion 256 (on the same side as the protruding side of the connector terminal 260).
As shown in FIG. 15, an oval opening 258 is formed in a portion near the center of the intermediate portion 256 of the mounting terminal 250.

  As described above, in the present embodiment, since the elliptical opening 258 is provided in a portion near the center of the intermediate portion 256 of the mounting terminal 250, the insert molding between the resin base member 240 and the mounting terminal 250 is performed. When the resin flows into the elliptical opening 258, a resin column 248 is formed below the front side surface (partition) 249 of the resin base member 240 so as to penetrate the opening 258, and The bonding strength between the member 240 and the mounting terminal 250 is further increased, and the strength against the above-described stress can be increased.

As shown in FIG. 16, the connector terminal 260 has a mounting end 262 and a root portion stored in a storage portion of the resin base member 240 (a storage portion similar to the first slit-shaped storage portion 45 of Reference Example 1). 263 and a rising portion 264 located between the mounting end portion 262 and the root portion 263.
An electric connection portion 261 having a U-shaped cutout portion 261A that is electrically connected to one end of the coil 220 by soldering is provided branching laterally from the rising portion 264.
Further, in the root portion 263, the first arm portion 263A, the second arm portion 263B, and the connecting portion 263C connecting the two arm portions 263A and B have a U-shape as a whole. Has a space portion.

With such a shape, the area of the opposing portion between the connector terminal 260 and the mounting terminal 250 that are close to each other can be reduced, so that the stray capacitance generated by the terminals 250 and 260 can be significantly reduced. it can. The arms 263A and 263B are provided with inward claws 263A1 and 263B1, respectively, which are fitted to the resin base member 240. The elastic force of each of the arms 263A and 263B causes the resin base member to have an elasticity. The claw portions 263A1 and 263B1 are engaged with the engagement portion 240 so as to grip them.
It is needless to say that the claw portions 263A1 and 263B1 may be formed outward in the vicinity of the tips of the arms 263A and 263B.

<Modification>
As described above, the antenna coil device according to the embodiment of the present invention has been described. However, the present invention is not limited to the above-described embodiment, and can be variously changed.

For example, in the above-described embodiment, a state in which the coil is wound directly around the magnetic core is shown, but a bobbin around which the coil is wound is inserted into the core according to the magnetic material to be used. You may make it.
Further, the shapes of the magnetic core, the resin base member, the mounting terminals, the connector terminals, and the like are not limited to those of the embodiment, and can be changed to various shapes. The provided through holes and cutouts can be mutually changed.

10, 110, 210 Antenna coil device 20, 120, 220 Coil 30, 130, 230 Core 40, 140, 240 Resin base member 41, 141 First opening 42, 142 Second opening 43, 143 Extension 44, 144 249 partition part 45 first slit-shaped storage part 46 second slit-shaped storage part 47 open part 50, 54A, B, 150, 154A, B, 250, 254A, B mounting terminal 51, 151, 261A notch part 52, 61, 152, 252, 261 Electrical connection part 53, 153, 253 Rise part 56, 156, 256 Middle part 57, 157, 257 Exposed part 158, 258 Opening part 60, 160, 260 Connector terminal 62, 262 Mounting end part 63, 263 Root portion 64, 264 Rising portion 248 Resin support 263A First arm portion 63A1,263B1 claw portion 263B second arm portion 263C connecting portion

Claims (5)

A magnetic core,
A coil formed by winding a wire having an insulating film around the magnetic core;
A resin base member on which the magnetic core and the coil are mounted,
An antenna coil device having a mounting terminal formed integrally with the resin base member, and a connector terminal attached to the resin base member,
In a state where the connector terminal and the mounting terminal are not in contact with each other in the resin base member, a plate-shaped intermediate portion of the connector terminal and a mounting end of the mounting terminal are respectively parallel to the mounting surface. And the connector terminals are arranged in two layers, and the connector terminal is disposed at a position opposite to the mounting surface with the mounting terminal interposed therebetween,
The resin base member is provided with an opening having an axis in a direction orthogonal to a mounting surface, and an end extending downward at one of both ends of the coil is formed by a notch of the mounting terminal at the opening. Configured to be electrically connected to the electrical connection,
Further, the other laterally extending end of both ends of the coil is an electrical connection branched laterally from a rising portion located between a mounting end of the connector terminal and a base at an upper portion of the resin base member. Is configured to be electrically connected to the upward notch of the part,
A first arm portion and a second arm portion are formed on both sides of the root portion of the connector terminal, and a claw portion for engaging with an engagement portion of a resin base member is provided at a tip of the both arm portions. An antenna coil device comprising:   The antenna coil device according to claim 1, wherein the mounting terminal includes an exposed portion exposed from the resin base member.   The antenna coil device according to claim 1, wherein an elliptical opening is formed in an intermediate portion of the mounting terminal.   The antenna coil device according to claim 3, wherein a part of the oval opening of the mounting terminal is exposed to the outside of the resin base member. In the connector terminal and the mounting terminal of the antenna coil device, regions other than the respective end regions are covered with a mold resin portion, and the resin of the mold resin portion enters the exposed portion of the oval opening. The antenna coil device according to claim 4, wherein the antenna coil device is in a state.