JP5880537B2 - Electronic component equipment - Google Patents

Description

  The present invention relates to an electronic component device having a waterproof function in which an electronic component such as an antenna device is housed in a waterproof case.

  For example, an electronic component mounted on an automobile or the like needs to be installed in a waterproof structure in order to ensure durability against rainwater intrusion.

  As a conventional electronic component device having a waterproof function, as described in Patent Document 1 below, an electronic component such as a coil component is housed in a housing portion of a waterproof case, and elastic to restrict the movement of the electronic component. A sealing body made of a material is inserted, and the opening of the waterproof case is closed with a lid member, and the space between the sealing body and the lid member is filled with resin and sealed to ensure waterproofness to electronic components. There is known a technique for configuring such a manner.

JP 2008-211643 A

  By the way, in the waterproof structure of the electronic component disclosed in Patent Document 1, after the electronic component is stored in the storage portion of the waterproof case, a sealing body that is a separate component from the electronic component is inserted from the opening of the waterproof case. After that, it is necessary to attach a lid member to the opening of the waterproof case, the number of parts is large, the assembly process is complicated, and it becomes an obstacle when trying to increase manufacturing efficiency and reduce manufacturing cost. There is a problem in that the structure is disadvantageous for miniaturization of the component device.

  The present invention has been made in view of the above points, and the object of the present invention is to secure an excellent waterproof function with a small number of parts and to reduce the number of parts, thereby increasing the production efficiency and reducing the production cost. It is an object of the present invention to provide an electronic component device that can be reduced and reduced in size.

An electronic component device according to the present invention includes a case having a bottomed tubular housing portion closed at one end, placed along the axial direction on the housing part of the case, the winding coil is wound around the outer periphery, an internal An electronic component device comprising an electronic component having a bobbin portion into which a magnetic core is inserted ,
The electronic component is provided with side plate portions extending in the axial direction of the storage portion from the bobbin portion along both sides of the magnetic core,
An elastic part that is thinner than the thickness of the side plate part and extends toward the bottom surface of the storage part is provided integrally with the side plate part at each tip of the side plate part ,
It is characterized in that the front end of the elastic portion is the electronic component in a state of being deformed in contact with the bottom surface of the retract and part of the case is sealed in the case.

  According to the electronic component device of the present invention, an electronic component having a base portion that is inserted into the housing portion from the opening portion of the waterproof case is integrated with the base portion at the end portion on the opening portion side, and the periphery is within the waterproof case. An outer wall of the lid portion is provided with a lid portion having a double wall structure including an outer wall that abuts on the peripheral surface and an inner wall that is positioned closer to the base portion than the outer wall and whose peripheral edge abuts on the inner peripheral surface of the waterproof case. And the inner wall is a double wall structure and is integrated with the base part, and a waterproof structure can be configured just by assembling the electronic parts to the waterproof case, which can realize downsizing and It is not necessary to separately assemble a lid member and a sealing body which are separate parts, and a waterproof mechanism can be configured by a simple manufacturing process, so that production efficiency and inventory management efficiency can be improved.

  In addition, a concave circumferential groove that continuously connects the entire periphery of the opening of the waterproof case is provided on the outer peripheral portion between the outer wall and the inner wall of the base portion, and a plurality of notched window portions that communicate with the circumferential groove are provided. In the case where the outer wall or the waterproof case is formed, the resin is injected from at least one notch window portion and filled from the at least one notch window portion when the peripheral groove is filled with resin to ensure sealing performance. The degree of filling can be confirmed by the outflow of the resin, and the entire circumferential groove can be filled with the resin efficiently. The filling of the resin improves the waterproof function of the electronic component and improves the opening of the waterproof case. Strength can be improved and durability can be increased.

  In addition, in the case where a communication path is provided between the outer wall and the inner wall of the base portion so that the circumferential grooves facing the inner surfaces in different directions of the waterproof case are communicated with each other, at least one notch window portion is connected to the circumferential groove. The injected resin flows through the communication path to the circumferential groove at a position away from the notch window portion, and the function of venting air with the flow of the resin is obtained. Thus, it is possible to quickly fill the entire structure, to secure a firm sealing property of the electronic component and to obtain a bonding strength between the waterproof case and the electronic component.

  Furthermore, when the outer wall and / or the inner wall has a tapered surface in contact with a tapered surface formed on the inner peripheral surface in the vicinity of the opening of the waterproof case, an electronic component is inserted into the waterproof case. When the taper surfaces come into contact with each other to improve the sealing performance and the resin is filled, the flow of the resin is prevented at the contact portion of the taper surface, and the resin filling region can be limited.

1 is a plan view of an electronic component device according to a first embodiment of the present invention. It is a disassembled perspective view of the waterproof case and electronic component in the electronic component apparatus of FIG. FIG. 3 is a 3-3 cross-sectional view of FIG. 1. FIG. 4 is a sectional view taken along the line 4-4 in FIG. 1. FIG. 5 is a sectional view taken along line 5-5 in FIG. 1. It is a disassembled perspective view of the waterproof case and electronic component in the electronic component apparatus which concerns on the 2nd Embodiment of this invention. It is a perspective view of the connection terminal part of the electronic component apparatus of FIG. It is sectional drawing of the connection terminal part of the electronic component apparatus of FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, first and second embodiments of an electronic component device according to the present invention will be described in detail with reference to the accompanying drawings.

<First Embodiment>
The electronic component device according to the first embodiment of the present invention shown in FIGS. 1 to 5 is an antenna device in which an antenna component configured by winding a winding coil around a magnetic core is housed in a waterproof case as an electronic component. For example, it is mounted on a car.

  As shown in FIG. 1 and FIG. 2, the antenna device 10 (electronic component device) of this example includes a waterproof case 20 and an antenna component 30 (electronic component).

  The waterproof case 20 has a bottomed cylindrical storage portion 21 whose one end is closed, and an opening portion 22 communicating with the storage portion 21, and the storage portion 21 allows an antenna component 30 to be connected to the opening portion 22 as an electronic component. It is inserted and stored in the longitudinal direction. The opening 22 of the waterproof case 20 of this embodiment is provided so as to include a front opening 22 a facing the bottom surface of the storage portion 21 and a side opening 22 b orthogonal to the front opening 22 a.

  A tapered surface 23 (described later) is continuously formed on the inner surface near the edge of the opening 22, and a notch window 24 is opened at a wall end facing the side opening 22 b. A rib 25 described later is formed in the vicinity of the bottom. Further, an engaging portion 26 is provided on the outer surface of the storage portion 21 for engaging and mounting to a holding component provided at an installation site such as an automobile.

  The waterproof case 20 is a resin molded product, and is molded by ABS resin, PBT resin, PPS resin or a mixture thereof excellent in mechanical strength, chemical resistance, heat resistance and moisture resistance.

  The antenna component 30 is housed and fixed inside the housing portion 21 of the waterproof case 20 so that it is protected from the influence of external environment vibrations and shocks, temperature and humidity, dust and dirt, and the like.

  The antenna component 30 includes a magnetic core 31, a bobbin portion 32, a base portion 33, a lid portion 34, a terminal cover 35, a side plate portion 36 and an elastic portion 37, a winding coil 38, and an internal terminal 39. The outer terminal pin 41 (see FIG. 4) as a connection terminal, a capacitor (not shown), and a filler 42 are included. In the present embodiment, the bobbin portion 32, the base portion 33, the lid portion 34, the terminal cover 35, the side plate portion 36, and the elastic portion 37 are integrally formed of non-conductive and non-magnetic resin, and the internal terminals 39 and The outer terminal pins 41 are integrally disposed by insert molding.

  The magnetic core 31 is formed of a ferrite-based magnetic material in the shape of a rectangular parallelepiped having a rectangular cross section and extending in the longitudinal direction. The magnetic core 31 is made of Mn—Zn ferrite so as to excite a strong magnetic field.

  The material of the magnetic core 31 is not limited to Mn—Zn ferrite, and Ni—Zn ferrite having a desired magnetic characteristic, a metal magnetic material, an amorphous magnetic material, or the like may be adopted as a material. . At that time, when using a Mn-Zn ferrite core, a metal magnetic core, or an amorphous magnetic core having a low insulation resistance value as the material of the magnetic core 31, the bobbin portion 32, the insulating tape, etc. formed of an insulating resin or the like are magnetized. It is interposed between the core 31 and the winding coil 38. By interposing the bobbin portion 32, the insulating tape, etc., high insulation can be secured between the magnetic core 31 and the winding coil 38. In addition, the shape of the magnetic core 31 may be an arbitrary shape depending on the application.

  As shown in FIGS. 1 and 5, when the antenna component 30 is inserted into the housing part 21 of the waterproof case 20, the magnetic core 31 is moved by the ribs 25 formed above and below the housing part 21. Be regulated. That is, ribs 25 projecting in opposition to each other are formed on the upper and lower surfaces near the bottom of the storage portion 21 of the waterproof case 20 so as to extend along the insertion direction (longitudinal direction of the storage portion 21). The protruding height of the rib 25 is determined when the tip of the magnetic core 31 in the inserted antenna component 30 is in contact with the insertion or moved by a predetermined amount so as to prevent movement (vibration) by sandwiching the tip of the magnetic core 31 from above and below. Is set to touch.

  Next, the bobbin portion 32 has a rectangular tube shape, the magnetic core 31 is inserted therein, and a winding coil 38 is wound around the outer periphery. In FIG. 2, the winding coil 38 is wound around substantially half of the bobbin portion 32, and the winding of the remaining winding coil 38 is omitted, and the bobbin portion 32 is visible. The winding coil 38 is formed by winding a conductive wire with a coating film with a predetermined number of turns to constitute an antenna coil. Since the wound conducting wire is covered with an insulating film, the conducting wire and the magnetic core 31 do not come into contact with each other, and a short circuit (short) that can occur between the conducting wire and the magnetic core 31 can be suppressed. In addition, when the conducting wire is wound around the antenna component 30, the conducting wire can be protected from the cornered portion of the magnetic core 31.

  The side plate portion 36 is provided so as to extend in a plate shape in the longitudinal direction from both sides of one end of the bobbin portion 32 toward the bottom surface of the waterproof case 20, and the side plate portion 36 is a rear portion of the magnetic core 31 inserted into the bobbin portion 32. Along both sides.

  A thin plate-like elastic portion 37 is formed at the front ends of the side plate portions 36 on both sides. When the antenna part 30 is inserted into the waterproof case 20, the elastic part 37 is elastically deformed by the tip contacting the bottom surface of the waterproof case 20, thereby restricting the vibration of the tip part of the antenna part 30. .

  The base portion 33 is connected to the other end portion of the bobbin portion 32, and is inserted into the bobbin portion 32 through the inside of the bobbin portion 32 and on the upper surface portion of the tip portion of the magnetic core 31. 32 and the lid 34 are arranged so as to be connected. The bottom surface of the tip portion of the magnetic core 31 is open, and the tip of the magnetic core 31 is in contact with the contact end surface 33a of the base portion 33 on the lid portion 34 side (see FIG. 3).

  A mounting recess 33b in which a capacitor (not shown) is mounted is provided at the center of the base 33, and the lower half of the capacitor is inserted and fixed in the recess 33b. Also, a set of internal terminals 39, 39 extending from one side surface to the other side surface in the lateral direction is embedded in the base portion 33 by insert molding. A capacitor connection terminal (not shown) is fixed to one end of the set of internal terminals 39, 39, and both ends of the winding coil 38 are connected to the other end of the internal terminals 39, 39, respectively. The winding coil 38 and the capacitor are connected in series. The antenna component 30 of this example forms a transmission antenna using a series resonance circuit by connecting a capacitor in series with the winding coil 38.

  Next, the lid portion 34 includes a front lid portion 34a that seals the front opening portion 22a of the waterproof case 20 and a side lid portion 34b that seals the side opening portion 22b perpendicular to the front lid portion 34a. Thus, it has a double wall structure of an outer wall 34c and an inner wall 34d.

  3 shows a cross-sectional structure of the front lid portion 34a, and FIG. 4 shows a cross-sectional structure of the side lid portion 34b. The outer wall 34c of the front lid portion 34a and the side lid portion 34b has a peripheral edge of the waterproof case 20. The inner wall 34d that is in contact with the inner peripheral surface of the opening 22 and is closer to the base portion than the outer wall 34c is in contact with the inner peripheral surface of the waterproof case 20 in the same manner as the outer wall 34c.

  A concave circumferential groove 34e is provided on the entire outer periphery of the lid portion 34 between the outer wall 34c and the inner wall 34d. The circumferential groove 34e is provided so as to continuously contact the entire periphery of the opening 22 of the waterproof case 20.

  Further, the peripheral surface of the inner wall 34d, that is, the peripheral surface of the inner wall 34d in the horizontal direction of the front lid portion 34a, and the peripheral surface of the inner wall 34d in the vertical direction of the side surface lid portion 34b are respectively formed as tapered surfaces 34f. The surface 34f is inclined toward the base portion 33 so that the surface opposite to the circumferential groove 34e is lowered. On the other hand, also in the inner peripheral edge portion of the opening 22 of the waterproof case 20, a lateral tapered surface 23 is formed in the front opening 22a and a longitudinal tapered surface 23 is formed in the side opening 22b. The surface 23 is inclined so that the case wall is thin at the opening end side and the wall thickness at the back is thick. The tapered surface 23 in the vicinity of the opening 22 of the waterproof case 20 and the tapered surface 34f of the inner wall 34d of the lid 34 are in contact with each other.

  In addition, the height of the outer wall 34c and the inner wall 34d may be changed so that the peripheral edge of the outer wall 34c is also formed in a tapered surface, and may be configured to contact the tapered surface separately directed to the waterproof case 20.

  The outer wall 34c of the lid portion 34 is formed with a plurality of cutout window portions 34g communicating with the circumferential groove 34e. Specifically, a notch window portion 34g that communicates with the circumferential groove 34e is formed at the upper and lower positions at approximately the center position in the width direction of each outer wall 34c of the front lid portion 34a and the side lid portion 34b. As for the size (height) of the notch window portion 34g, the inner end of the notch window portion 34g is provided at the same position as the bottom surface of the circumferential groove 34e. Further, a notch window portion 24 communicating with the circumferential groove 34e is also formed at the periphery of the opening portion 22 of the waterproof case 20. The cutout window 24 of the waterproof case 20 is provided so that an engagement protrusion 34h (see FIG. 1) formed in a circumferential groove 34e on the opposite side of the side cover 34b of the front cover 34a can be engaged. It has been.

  The lid portion 34 between the outer wall 34c and the inner wall 34d has a communication passage 34j that communicates with circumferential grooves 34e facing different inner surfaces of the opening 22 of the waterproof case 20. Specifically, each of the front lid portion 34a and the side lid portion 34b has an end portion opened in a circumferential groove 34e at the same position corresponding to the cutout window portion 34g of the outer wall 34c, and the lid portion 34 is provided in the vertical direction. One through passage 34j is formed at approximately the center of the front lid portion 34a and the side lid portion 34b. In the illustrated example, the communication passage 34j of the front lid portion 34a, that is, the passage area in the vicinity of the resin injection position described later, is provided larger than the passage area of the communication passage 34j of the side lid portion 34b.

  Furthermore, after the antenna component 30 is stored in the storage portion 21, in order to improve the waterproofness of the antenna device 10, the peripheral groove 34e and the communication passage 34j, which are annular spaces formed on the outer periphery of the lid portion 34, are made of liquid resin. Filling material 42 (shown by chain line hatching in FIGS. 3 and 4) is filled and cured. By filling the liquid resin, the antenna component 30 housed in the housing portion 21 can be fixed, and the waterproofness of the antenna device 10 can be further enhanced.

  The circumferential groove 34e and the communication passage 34j serve as a filling space for the resin filler 42, and a part of the notched window 34g serves as a liquid resin inlet. As illustrated by an arrow in FIG. The passage 34j functions as a flow path and a discharge path for the liquid resin, and the internal air accompanying the resin injection is discharged from the other notch window portion 34g, and excess resin leaks out. As the liquid resin, for example, a silicon resin or a polyamide resin is used. These resin materials have the advantage that excellent sealing performance, that is, waterproofness can be obtained because of excellent injection properties, and excellent durability against vibration can be obtained by having elasticity after curing. Yes.

  The terminal cover 35 projects from the side cover 34b of the cover 34 in a cylindrical shape in a direction perpendicular to the surface of the side cover 34b. On the surface of the center portion of the side cover portion 34 b inside the terminal cover 35, end portions of the pair of external terminal pins 41 protrude. The outer terminal pin 41 is insert-molded from the base portion 33 to the side cover portion 34b so that the inner end portion of the outer terminal pin 41 is connected to the inner terminals 39, 39, respectively. The external terminal pin 41 is connected to an external electronic device via a connector (not shown).

  Briefly describing the assembly of the antenna device 10 of the first embodiment, the bobbin portion 32, the base portion 33, the lid portion 34, and the terminal cover 35 are inserted by inserting the internal terminal 39 and the external terminal pin 41 into a molding die. The side plate portion 36 and the elastic portion 37 are integrally formed, and the waterproof case 20 is separately formed. A winding coil 38 is wound around the bobbin portion 32, its end portion is coupled to the internal terminal 39, a capacitor is installed in the base portion 33, its terminal is coupled to the internal terminal 39, and a magnetic core is further provided inside. The antenna component 30 is assembled by inserting 31.

  Thereafter, the antenna component 30 is inserted from the opening 22 of the waterproof case 20 in the longitudinal direction of the magnetic core 31 with the elastic portion 37 as a tip, and the lid 34 seals the opening 22 of the waterproof case 20. Push in. At the final stage of pushing in, the elastic portion 37 at the tip contacts the bottom surface of the housing portion 21 of the waterproof case 20 and is deformed, and thereafter, the engaging protrusion 34 h of the lid portion 34 is engaged with the notch window portion 24 of the waterproof case 20. In combination, the lid 34 is incorporated in a state where the opening 22 of the waterproof case 20 is sealed.

  In addition, on the inner surface of the waterproof case 20, a guide portion (not shown) that guides the vertical position or the horizontal position when the antenna component 30 is inserted is installed.

  In the state where the antenna component 30 is pushed into the waterproof case 20 and combined, the longitudinal and lateral taper surfaces 34f of the peripheral edge of the inner wall 34d are the vertical and lateral taper surfaces of the peripheral edge of the opening 22 of the waterproof case 20. 23 in a pressure contact state. Thereafter, for example, a liquid resin is injected from the notched window portion 34g using the notched window portion 34g in the upper portion of the outer wall 34c of the front lid portion 34a as an injection port, and the injected resin flows in the circumferential direction through the circumferential groove 34e. At the same time, it flows into the communication passage 34j and flows into the circumferential groove 34e on the opposite side, and the air there is discharged from the cutout windows 24 and 34g other than the inlet, and a liquid resin is provided around the circumferential groove 34e. The surplus resin overflows from the other notch windows 24 and 34g, and the injection of the resin is stopped after confirming that the entire circumference of the circumferential groove 34e is filled. The filler 42 is filled by subsequent curing of the liquid resin.

  By filling the filler 42, the antenna component 30 that is sealed and joined to the lid portion 34 of the antenna component 30 on the entire circumference of the opening 22 can be secured. Further, the waterproof case 20 and the antenna component 30 can be assembled only by pushing in the antenna component 30 as an integral component, and the taper surfaces 23 and 34f can be prevented from entering the liquid resin. In addition to the improvement in waterproof sealability due to the mutual contact between the surfaces, there is no intrusion of resin into the unintentional position beyond the taper surface, and the desired antenna device 10 can be easily and efficiently produced, and the filler 42 The strength of the opening 22 is high and good waterproof durability can be ensured by joining the lid 34 and the waterproof case 20 with curing.

  The antenna device 10 according to the first embodiment described above has a double wall structure of the lid 34 integrally formed with the antenna component 30 and waterproofs the antenna component 30 housed in the waterproof case 20. Since the lid portion 34 has an integrated structure, the assembly position accuracy with respect to the waterproof case 20 becomes better than when a separate lid body is attached, and the formation of a gap into which moisture enters can be prevented, thereby improving the waterproofness. There is an effect. Further, the filler 42 is filled in the circumferential groove 34e formed between the double wall structure of the outer wall 34c and the inner wall 34d of the lid portion 34. Since the filled filler 42 fills the space between the lid portion 34 and the inner peripheral surface of the waterproof case 20, there is an effect that the waterproofness is enhanced by eliminating a gap for moisture to enter from the outside.

  As a modification of the above-described embodiment, the resin component of the antenna component 30 is integrally formed. However, the bobbin portion 32 and the base portion 33 (lid portion 34) are formed separately, and the wound coil 38 is formed. After the bobbin portion 32 and the base portion 33 wound together are assembled and integrated, the antenna device 10 may be configured by incorporating the filler 42 into the waterproof case 20 and injecting the filler 42.

  In addition, the number of cutout window portions 34g is required to be at least one for resin injection, and at least one for air discharge and excess resin leakage. The number of notch windows 34g for resin injection is not limited to one, and the resin is injected from a plurality of positions by the plurality of notch windows 34g, so that the entire circumferential groove 34e can be surely and quickly. Resin filling may be performed. In addition, a plurality of notched window portions including a notched window portion for injecting resin may be formed in the waterproof case 20 at a position corresponding to the circumferential groove 34e, and at that time, the notched window portion is formed on the outer wall 34c. In some cases, the formation of 34g can be omitted. Moreover, it is good also as a form which served as the opening for engagement and the opening for discharge | emission like the notch window part 24 of the waterproof case 20 in the said embodiment.

  Furthermore, the number of communication passages 34j and the formation site thereof can be appropriately changed in design according to the shape of the lid 34 and the like from the viewpoint of improving the fluidity of the filler 42. For example, a plurality of communication paths may be communicated with each other, and the resin can be distributed in multiple directions by forming a communication path in the vertical direction and a communication path in the horizontal direction.

  The above-described modification can be similarly applied to a second embodiment described later.

<Second Embodiment>
The electronic component device according to the second embodiment of the present invention shown in FIGS. 6 to 8 is similar to the first embodiment in that an antenna component 130 formed by winding a winding coil 138 around a magnetic core 131 is electronic. This is an example of the antenna device 100 that is housed in a waterproof case 120 as a component, and is mounted on, for example, an automobile.

  The difference of this embodiment from the first embodiment is that the shape of the opening 122 of the waterproof case 120 is open only on the front surface facing the bottom surface of the storage part 121 and the side surface is not open, and the lid part. Reference numeral 134 is provided only on the front surface, and a terminal cover 135 is provided in a cylindrical shape in the longitudinal direction from the front lid portion 134.

  As shown in FIG. 6, the antenna device 100 (electronic component device) of the present example includes a waterproof case 120 and an antenna component 130 (electronic component).

  The waterproof case 120 has a bottomed cylindrical storage part 121 whose one end is closed and an opening part 122 communicating with the storage part 121, and the storage part 121 serves as an electronic component from the opening part 122. It is inserted and stored in the longitudinal direction. As for the opening part 122 of the waterproof case 120 of this embodiment, only the part which faces the bottom face of the storage part 121 opens.

  A taper surface 123 is formed continuously on the inner surface near the edge of the opening 122, and a notch window 124 is opened on both ends of the case wall surfaces on both sides. Ribs 125 (structures similar to the ribs 25 in the first embodiment) are formed. Further, an engaging portion 126 for engaging and mounting to a holding component provided in an installation site such as an automobile is provided on the outer surface of the storage portion 121.

  The waterproof case 120 is a resin molded product, and is molded by ABS resin, PBT resin, PPS resin or a mixture thereof excellent in mechanical strength, chemical resistance, heat resistance and moisture resistance.

  The antenna component 130 is housed and fixed inside the housing portion 121 of the waterproof case 120, so that it can be protected from the influence of external environment vibrations and shocks, temperature and humidity, dust, and dust.

  The antenna component 130 includes a magnetic core 131, a bobbin portion 132 made of a resin molded product, a base portion 133, a lid portion 134, a terminal cover 135, a side plate portion 136 and an elastic portion 137, a winding coil 138, and an internal terminal 139. The external terminal pin 141 (see FIGS. 7 and 8) as a connection terminal, a capacitor (not shown), and a filler 142 (indicated by chain line hatching in FIG. 8). In the present embodiment, the bobbin portion 132, the base portion 133, the lid portion 134, the terminal cover 135, the side plate portion 136 and the elastic portion 137 are integrally formed of non-conductive and non-magnetic resin, and the internal terminal 139 and The outer terminal pins 141 are integrally disposed by insert molding.

  The magnetic core 131 is made of the same magnetic material as the previous example, and is provided in the same rectangular parallelepiped shape. Further, the bobbin portion 132 is also configured in the same manner as in the previous example, has a rectangular tube shape, the magnetic core 131 is inserted therein, and the winding coil 138 is similarly wound around the outer periphery. In FIG. 6, the winding coil 138 is wound around substantially half of the bobbin portion 132, and the winding of the remaining portion of the winding coil 138 is omitted, and the bobbin portion 132 is visible. The side plate portion 136 and the elastic portion 137 are also connected to one end portion of the bobbin portion 132 as in the previous example.

  In addition, the base portion 133 is similarly connected to the other end portion of the bobbin portion 132, and is disposed so as to connect the bobbin portion 132 and the lid portion 134. In this example, the tip of the magnetic core 131 is the lid portion. It is in contact with the back surface of 134 (see FIG. 8).

  A mounting recess 133b in which a capacitor (not shown) is mounted is provided in the central portion of the base portion 133 in the same manner as the previous example, and a capacitor connection terminal is provided at one end of a pair of internal terminals 139 and 139 embedded by insert molding. Both ends of the winding coil 138 are respectively connected to the other end, and the winding coil 138 and a capacitor are connected in series. Similarly to the previous example, the antenna component 130 of this example also uses a capacitor as the winding coil 138. Are connected in series to form a transmission antenna using a series resonance circuit.

  Next, the cover part 134 seals the opening part 122 of the waterproof case 120, and has a double wall structure of the outer wall 134c and the inner wall 134d. FIG. 8 shows a cross-sectional structure of the lid portion 134, and the outer wall 134 c of the lid portion 134 abuts on the inner circumferential surface of the opening 122 of the waterproof case 120.

  A concave circumferential groove 134e is provided on the entire outer periphery of the lid portion 134 between the outer wall 134c and the inner wall 134d. The circumferential groove 134e is provided so as to continuously contact the entire periphery of the opening 122 of the waterproof case 120.

  Further, the peripheral surface of the inner wall 134d is formed as a tapered surface 134f, and the tapered surface 134f is inclined toward the base portion 133 so that the surface opposite to the peripheral groove 134e is lowered. On the other hand, a tapered surface 123 is formed on the inner peripheral edge of the opening 122 of the waterproof case 120. The tapered surface 123 of the waterproof case 120 has a thin case wall on the opening end side and a deep wall thickness. It is inclined to be thick. The tapered surface 123 formed on the inner peripheral surface near the opening 122 of the waterproof case 120 and the tapered surface 134f of the inner wall 134d of the lid 134 are in contact with each other.

  In addition, the height of the outer wall 134c and the inner wall 134d may be changed so that the peripheral edge of the outer wall 134c is also formed in a tapered surface, and may be configured to be in contact with the tapered surface separately directed to the waterproof case 120.

  A plurality of notch windows 134g communicating with the circumferential groove 134e are formed at the upper and lower positions of the lid wall 134 at the substantially central position in the width direction of the outer wall 134c. As for the size (height) of the notch window portion 134g of the outer wall 134c, the inner end portion of the notch window portion 134g is provided at the same position as the bottom surface of the circumferential groove 134e. Furthermore, the left and right case walls at the periphery of the opening 122 of the waterproof case 120 are formed with notch windows 124 communicating with the circumferential groove 134e. The notch window portion 124 of the waterproof case 120 is provided so that engagement protrusions 134 h formed in the circumferential grooves 134 e on both sides of the lid portion 134 can be engaged.

  The lid portion 134 between the outer wall 134c and the inner wall 134d has a communication path 134j that communicates circumferential grooves 134e that face different inner surfaces of the opening 122 of the waterproof case 120. Specifically, the lid portion 134 has an end portion opened in a circumferential groove 134e at the same position corresponding to the notch window portion 134g of the outer wall 134c, and a communication path 134j penetrating the lid portion 134 in the vertical direction is substantially at the center. One is formed.

  Further, in this example as well as the previous example, in order to increase the waterproofness of the antenna device 100 after the antenna component 130 is stored in the storage unit 121, a circumferential groove that is an annular space formed on the outer periphery of the lid unit 134. 134e is filled with a filler 142 made of a liquid resin (indicated by chain line hatching in FIG. 8) and cured. By filling the liquid resin, it is possible to fix the antenna component 130 stored in the storage unit 121 and further improve the waterproofness of the antenna device 100.

  The circumferential groove 134e and the communication path 134j serve as a filling space for the resin filler 142, one of the cutout windows 134g serves as a liquid resin inlet, and the circumferential groove 134e and the communication path 134j serve as a liquid resin flow path and a discharge path. As a result, the internal air accompanying the resin injection is discharged from the other notch window portion 134g, and excess resin leaks out.

  The terminal cover 135 protrudes from the lid portion 134 in a cylindrical shape in a direction perpendicular to the surface thereof (longitudinal direction of the antenna component 130). On the surface of the center portion of the lid portion 134 inside the terminal cover 135, end portions of the pair of external terminal pins 141 protrude. The outer terminal pin 141 is insert-molded so that the outer terminal pin 141 penetrates the lid part 134 from the base part 133 so as to be connected to the internal terminals 139 and 139, respectively. The external terminal pin 141 is connected to an external electronic device via a connector (not shown).

  In this example, as shown in FIGS. 7 and 8, a seal portion 145 filled with an elastic resin is disposed in a recess formed in the root portion of the outer terminal pin 141, and an end face of an external connector (not shown) It is comprised so that a waterproof seal property may be acquired by contact | abutting between. That is, when an external connector is mounted along the terminal cover 135, the external connector is electrically connected to the external terminal pin 141, and the distal end surface thereof is held in pressure contact with the seal portion 145. Water is prevented from entering the electrical connection portion with the pin 141 to obtain waterproofness.

  Briefly explaining the assembly of the antenna device 100 of the second embodiment, the internal terminal 139 and the external terminal pin 141 are inserted into a molding die, and the bobbin portion 132, the base portion 133, the lid portion 134, and the terminal cover 135 are inserted. The side plate portion 136 and the elastic portion 137 are integrally formed, and the waterproof case 120 is separately formed. The winding coil 138 is wound around the bobbin portion 132, the end portion thereof is coupled to the internal terminal 139, the capacitor is disposed on the base portion 133, the terminal portion is coupled to the internal terminal 139, and the inside is magnetically The antenna component 130 is assembled by inserting the core 131. In addition, the seal portion 145 is provided by filling the concave portion formed in the inner outer wall 134c of the terminal cover 135 after integral molding with a filler.

  Thereafter, the antenna component 130 is inserted from the opening 122 of the waterproof case 120 in the longitudinal direction of the magnetic core 131 with the elastic portion 137 as a tip, and the lid 134 seals the opening 122 of the waterproof case 120. Push in. At the final push-in stage, the elastic portion 137 at the tip is deformed by contacting the bottom surface of the housing portion 121 of the waterproof case 120, and then the engaging protrusion 134 h of the lid portion 134 is engaged with the notch window portion 124 of the waterproof case 120. In combination, the lid 134 is incorporated in a state in which the opening 122 of the waterproof case 120 is sealed.

  Note that a guide portion (not shown) is provided on the inner surface of the waterproof case 120 to guide the vertical position or the horizontal position when the antenna component 130 is inserted.

  In the state where the antenna part 130 is pushed into the waterproof case 120 and combined, the tapered surface 134f on the peripheral edge of the inner wall 134d contacts the tapered surface 123 on the peripheral edge of the opening 122 of the waterproof case 120 in a pressure contact state. Thereafter, for example, a liquid resin is injected from the notched window portions 124 and 134g using the notched window portion 134g on the upper portion of the outer wall 134c of the lid portion 134 as an injection port, and the injected resin passes through the circumferential groove 134e in the circumferential direction. While flowing, it flows into the communication path 134j and flows into the lower circumferential groove 134e, and the air there is discharged from the notch window portion 134g other than the inlet, and the entire circumference of the circumferential groove 134e is filled with liquid resin. The excess resin overflows from the lower cutout window portion 134g and the cutout window portion 124 of the waterproof case 120, thereby confirming that the entire circumference of the circumferential groove 134e is filled with resin. To stop. The filler 142 is filled by subsequent curing of the liquid resin.

  By filling the filler 142, as in the previous example, the antenna component 130 is sealed and joined to the entire periphery of the lid portion 134 of the antenna component 130 on the entire periphery of the opening 122, and stored in the waterproof case 120. Waterproofness can be secured. In addition, the waterproof case 120 and the antenna component 130 can be assembled only by pushing in the antenna component 130 that is an integral component, and the taper surfaces 123 and 134f can be prevented from entering the liquid resin. In addition to the improvement in waterproof sealability due to mutual contact between the surfaces, there is no intrusion of resin into the unintentional position beyond the tapered surface, and the desired antenna device 100 can be easily and efficiently produced, and the filler 142 By joining the lid portion 134 and the waterproof case 120 accompanying the curing, the strength of the opening portion 122 is high and good waterproof durability can be ensured.

  As mentioned above, although embodiment of the electronic component apparatus which concerns on this invention was described, this invention is not limited to this embodiment, The thing of a various aspect can be comprised.

  For example, in the above-described embodiment, the antenna component is stored in the waterproof case, but the stored component is not limited to the antenna component (coil component). That is, it goes without saying that the same function and effect can be obtained even if an electronic component device is formed by housing an electronic circuit other than the antenna component and a waterproof case.

  The shape of the storage portion is a cylindrical shape with one end closed, but may be a cylindrical configuration with both ends open. In the case of such a configuration, after the electronic component is stored in the storage portion, both ends are sealed with a lid portion.

10,100 Antenna device (electronic component device)
20, 120 Case 21, 121 Storage portion 22, 122 Opening portion 22a Front opening portion 22b Side opening portion 23, 123 Tapered surface 24, 124 Notch window portion 25, 125 Rib 26, 126 Engaging portion 30, 130 Antenna component ( Electronic components)
31, 131 Magnetic core 32, 132 Bobbin portion 33, 133 Base portion 33a, Contact end surface 33b, 133b Recessed portion 34, 134 Lid portion 34a Front lid portion 34b Side surface lid portion 34c, 134c Outer wall 34d, 134d Inner wall 34e, 134e Circumferential groove 34f, 134f Tapered surface 34g, 134g Notch window portion 34h, 134h Engagement projection 34j, 134j Communication path 35, 135 Terminal cover 36, 136 Side plate portion 37, 137 Elastic portion 38, 138 Winding coil 39, 139 Internal terminal 41 , 141 Outer terminal pin 42, 142 Filler 145 Seal part

Claims (1)

A case having a bottomed cylindrical storage portion with one end closed, and a bobbin portion that is inserted in the storage portion of the case along the axial direction , wound with a winding coil on the outer periphery, and has a magnetic core inserted therein An electronic component device comprising an electronic component having
The electronic component is provided with side plate portions extending in the axial direction of the storage portion from the bobbin portion along both sides of the magnetic core,
An elastic part that is thinner than the thickness of the side plate part and extends toward the bottom surface of the storage part is provided integrally with the side plate part at each tip of the side plate part ,
Electronic component device, wherein the electronic component is sealed within the case in a state in which the leading end of the elastic portion is deformed in contact with the bottom surface of the retract and part of the case.

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