JP3617207B2 - Penetration type choke coil device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
According to the present invention, a core assembly formed by arranging a plurality of cores in which core members such as I type and E type are combined is fixed to a support body such as a housing by using a mounting plate. The present invention relates to a choke coil device, and more particularly to an improved configuration of a mounting plate fixing method and a core assembly assembling method.
[0002]
[Prior art]
A small-capacity choke coil device used in a small-capacity switching power supply device or the like is generally mounted on a printed circuit board. In contrast, a relatively large capacity choke coil device used in a large capacity switching power supply device has a large current value and external shape, so it is fixed to a casing such as a switching power supply device. In general, wiring is performed using a rectangular copper wire or a copper plate.
[0003]
In addition, the choke coil device used for the switching power supply device and the like preferably has a smaller number of windings as the operating frequency of the switching element included in the switching power supply device becomes higher. The number of turns is set to 1. A choke coil device having one winding is a through-type choke coil device. In a relatively large-capacity through-type choke coil device, an iron core is used as a switching power supply device in order to simplify assembly. In general, an assembly method is adopted in which a conductor as a winding is passed through the window portion of the iron core.
[0004]
Further, when a penetration type choke coil device having an arbitrary capacity is manufactured using a core combining an I-shaped core member, an E-shaped core member, or the like as an iron core, the capacity of the choke coil device, etc. There are known cases of adopting a single core having a size and shape that conforms to the standards and a core assembly in which a number of standard cores suitable for the capacity of the choke coil device are arranged. . In the former case, when there is no standard core member, a new mold needs to be manufactured in order to newly manufacture the core member, which increases the cost of the parts due to the mold cost. Since the latter is based on the premise that a standard core member is used, the component cost can be reduced regardless of the capacity of the choke coil device.
[0005]
In view of the foregoing, in many cases, a penetration type choke coil device having an arbitrary capacity employs a core assembly in which standard cores of a number suitable for the capacity of the choke coil device are arranged. Yes. A conventional example of a relatively large-capacity through-type choke coil device having such a basic configuration will be described with reference to FIG. Here, FIG. 5 is a drawing showing a conventional through-type choke coil device, in which (a) is a side view thereof and (b) is a front view thereof. In FIG. 5, reference numeral 8 denotes a core assembly including three sets of cores 7, conductors 4, the same number of upper cushion bodies 5 and mounting plates 6 as the number of cores 7, and six machine screws 83 that are screws. A through-type choke coil device including a spacer 81 and a lower cushion body 82.
[0006]
Each core 7 uses an I-shaped core member 71 and an E-shaped core member 72, and two window portions 7 a and 7 a are interposed between the I-shaped core member 71 and the E-shaped core member 72. Are combined to form. Each of the windows 7a and 7a is provided with a single conductor 4 penetrating therethrough. The conductor 4 may be a rectangular copper wire that is electrically insulated or a rectangular copper wire that is not electrically insulated depending on the necessity of a device (for example, a switching power supply device) on which the choke coil device 8 is mounted. In general, a processed product of a copper plate is used.
[0007]
Both ends of the conductor 4 are connected to an appropriate device (not shown) used in a device on which the choke coil device 8 is mounted. A current supplied to the choke coil device 8 is passed through the conductor 4, and this current is a direct current in which an alternating current component is superimposed in many cases. Thus, in the choke coil device 8, the directions of currents flowing through the conductors 4 penetrating the two window portions 7a and 7a are set to be opposite to each other.
[0008]
The mounting plate 6 is made of a structural material such as a metal material or a synthetic resin material, and is a loading portion for the machine screw 83 at each of the portions corresponding to both side end surfaces of the I-shaped core member 71. A through hole (not shown) is formed. The mounting plate 6 presses each core 7 via the upper cushion body 5 and fixes each core 7 to a housing 9 of a device on which a choke coil device 8 as a support is mounted. The upper cushion body 5 and the lower cushion body 82 are formed by forming an elastic material such as a rubber material into a sheet shape, and one of the roles played is a so-called cushion.
[0009]
By the way, when an alternating current component is superimposed on the current flowing through the conductor 4, an amount corresponding to the alternating current component included in the current flowing through the conductor 4 is known in the magnetic flux leaking from the core 7. The AC component is included. When an alternating current component is included in the magnetic flux leaking from the core 7, if the mounting plate 6 and the housing 9 are made of a conductive material such as metal, the alternating current component of the magnetic flux leaking from the core 7 is caused by these. It is known that eddy currents are generated. Another role of the cushion bodies 5 and 82 is to reduce the influence of the magnetic flux leaking from the core 7 by separating the mounting plate 6 and the housing 9 from the core 7, and to reduce the eddy current loss generated in the mounting plate 6 and the housing 9. It is to reduce.
[0010]
The spacer 81 is made of a nonmagnetic and electrically insulating sheet material such as a polyester film. The spacer 81 is inserted in a magnetic joint between the I-shaped core member 71 and the E-shaped core member 72 so that the I-shaped core member 71 and the leg portion of the E-shaped core member 72 are opposed to each other. It plays the role of maintaining the length of the gap (usually called a magnetic gap in many cases) at a predetermined value. The magnetic gap length is set to an optimum value for defining the inductance value of the choke coil device 8 and increasing the saturation current value related to the current flowing through the conductor 4.
[0011]
When installing the above-described choke coil device 8 in the housing 9, first, three E-shaped core members 72 are arranged so that the windows 7a and 7a are connected to each other, and the lower cushion body 82 is interposed therebetween. To be placed on the housing 9. Next, on the E-shaped core member 72, three I-shaped core members 71 are placed at positions facing the E-shaped core member 72 via spacers 81. Subsequently, each of the three attachment plates 6 is placed on each I-shaped core member 71 via the upper cushion body 5, and each core 7 is fixed to the housing 9 while being pressed using a machine screw 83. Finally, the conductor 4 is passed through the window portions 7a, and the installation of the choke coil device 8 on the housing 9 is completed.
[0012]
A core assembly using two or four or more cores is also known. In addition to a core using an I-shaped core member and an E-shaped core member, an E-shaped core member and an E-shaped core member, or an I-shaped core member, a U-shaped core member, and a U-shaped core member. A core in which a core member having a shape and a U-shaped core member are combined is also known.
In these cases, when using an E-shaped core member and an E-shaped core member, or a core in which a U-shaped core member and a U-shaped core member are combined, a magnetic joint between both core members is interposed. It may be preferable to divide the spacer to be inserted into each leg portion from the arrangement of the conductor (for example, the conductor 4) on the window portion (for example, the window portion 7a). Further, when using a core formed by combining an I-shaped core member, a U-shaped core member, and a U-shaped core member and a U-shaped core member, the number of window portions is naturally one.
[0013]
[Problems to be solved by the invention]
The choke coil device according to the above-described prior art, for example, the choke coil device 8 is configured as described above, so that the core cost is relatively low and the assembly cost can be relatively low. ing. However, the following is emerging as a problem. That is,
(1) As the choke coil device, the number of parts used such as a mounting plate (for example, the mounting board 6) is proportional to the number of cores (for example, the core 7) used. As the number of man-hours for attaching these parts increases, the manufacturing cost becomes expensive.
[0014]
In order to cope with this problem, a choke coil device using a mounting plate that can simultaneously press a plurality of cores used in a core assembly has been proposed. FIGS. 6A and 6B are drawings showing such a different conventional penetration type choke coil device, in which FIG. 6A is a side view thereof and FIG. 6B is a front view thereof. In FIG. 6, the same parts as those of the penetration type choke coil device according to the conventional example shown in FIG.
[0015]
6, 8A uses a mounting plate 6A and an upper cushion body 5A in place of the mounting plate 6 and the upper cushion body 5 with respect to the choke coil device 8 according to the conventional example shown in FIG. Is a through-type choke coil device in which the number used is four. The mounting plate 6A is shaped and dimensioned so that the three cores 7 can be pressed against the mounting plate 6 at the same time, and four through-holes (not shown) serving as loading portions for the machine screws 83 are formed at four locations. Is different.
[0016]
The upper cushion body 5 </ b> A has a shape / dimension corresponding to the shape / dimension in the surface direction of the mounting plate 6 </ b> A with respect to the upper cushion body 5. Then, when installing the choke coil device 8A on the housing 9, the three cores are formed by tightening the mounting plate 6A using the four small screws 83 and pressing it through the upper cushion body 5A. 7 is fixed to the housing 9 at the same time.
[0017]
The choke coil device 8A having the above-described configuration can solve the problem that the production cost of the choke coil device 8 is high due to the large number of parts such as mounting plates used. Become. However, a new problem is caused in the choke coil device 8A. This problem occurs, for example, when an impact resistance that can withstand the application of an acceleration as large as 100 times the acceleration of gravity is required.
[0018]
In other words, in order to withstand a large acceleration, the mounting plate 6A needs to be strongly pressed by the machine screw 83. Then, the mounting plate 6A has a pressing force as illustrated in FIG. The deformation in the direction opposite to the direction in which it occurs will occur. Here, FIG. 7 is an explanatory view schematically showing a deformation state of the mounting plate included in the through-type choke coil device shown in FIG. FIG. 7 is a view as seen from the same direction as in FIG.
[0019]
If the knowledge by material mechanics is cited, the mounting plate 6A is supported by the four corners and deformed by the distributed load from the lower side (the upper cushion body 5A is pressed against the mounting plate 6A, and is caused by this deformation. It can be seen as a beam that receives a distributed load as a reaction force). Due to this distributed load, the mounting plate 6A is subjected to deformation such that the deformation amount becomes a maximum value in the central portion, as is well known in material mechanics. As a result, the pressing force for pressing the central core 7 is smaller than the pressing force for pressing the cores 7 at both ends, so that the central core 7 moves even if a relatively small acceleration is applied. Will end up. That is, in the choke coil device 8A, it is difficult to obtain impact resistance that can withstand a large acceleration. Also,
(2) When a choke coil device such as the choke coil device 8 or the choke coil device 8A is installed on a support (for example, the housing 9), each core member constituting the core is handled individually. Built in. In addition, the core members combined with each other need to be placed with their positions facing each other correctly in order to maximize magnetic performance.
[0020]
Moreover, since these core members are relatively light weight as parts to be handled manually, even if a finger or the like slightly touches the placed core member, its position is shifted. For these reasons, it takes a relatively long time to incorporate the core member. In particular, since the I-shaped core member (for example, the I-shaped core member 71) is lighter than other core members, the position easily shifts when a finger is touched. It takes a particularly long time to incorporate it.
[0021]
The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a through-type choke coil device capable of reducing the manufacturing cost without lowering the impact resistance. It is in.
[0022]
[Means for Solving the Problems]
In the present invention, the aforementioned object is
1) A plurality of cores combined so that a window portion is formed using I-shaped and E-shaped, or E-shaped and E-shaped, I-shaped and U-shaped, or U-shaped and U-shaped core members. , Having a core assembly in which the window portions of the respective cores are arranged so as to be connected to each other, a conductor disposed through the window portion, and a screw loading portion, and fixing the core assembly And a cushioning body made of an elastic material interposed between the mounting plate and the core assembly, and pressing the core assembly through the cushioning body while using the mounting plate In the penetration type choke coil device fixed to the support,
The mounting plate can simultaneously press a plurality of cores used in the core assembly, and the cushion body is substantially aligned with the portion facing the cushion body in the direction in which the cores are arranged. It is set as the structure which has a press part which presses locally, or
2) In the means described in 1 above,
The pressing portions of the mounting plate are arranged in at least two rows at intervals in a direction substantially perpendicular to the direction in which the cores are arranged, and each pressing portion is formed for each portion facing each core. A configuration in which the protrusions are formed as a row, or
3) A plurality of cores combined so that a window portion is formed using I-shaped and E-shaped, or E-shaped and E-shaped, I-shaped and U-shaped, or U-shaped and U-shaped core members. , Having a core assembly in which the window portions of the respective cores are arranged so as to be connected to each other, a conductor disposed through the window portion, and a screw loading portion, and fixing the core assembly And a cushioning body made of an elastic material interposed between the mounting plate and the core assembly, and pressing the core assembly through the cushioning body while using the mounting plate In the penetration type choke coil device fixed to the support,
At least one core member possessed by each of the plurality of cores included in the core assembly is achieved by being connected to each other by a tape-like connecting member via an adhesive layer.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In the following description of this section, the same parts as those of the conventional through-type choke coil device shown in FIGS. 5 and 6 are denoted by the same reference numerals, and the description thereof is omitted. FIG. 1 is a side view showing an example of an embodiment of a through-type choke coil device according to the present invention, and FIG. 2 is a front view of the through-type choke coil device shown in FIG.
[0024]
1 and 2, reference numeral 1 denotes a tape-like coupling member, in addition to using the mounting plate 2 instead of the mounting plate 6A, for the penetration type choke coil device 8A according to the conventional example shown in FIG. This is a through-type choke coil device provided with a tape 3. The mounting plate 2 is different from the mounting plate 6A according to the conventional example in that a pressing portion 21 that locally presses the cushion body 5A is formed on the lower surface side facing the cushion body 5A. The pressing portion 21 has a long shape continuous in the direction in which the cores 7 are arranged, and two are arranged at intervals in a direction perpendicular to the direction in which the cores 7 are arranged. ing.
[0025]
These pressing portions 21 are made of the same material as the main portion of the mounting plate 2 (the portion excluding both pressing portions 21 of the mounting plate 2), and welded to the main portion of the mounting plate 2 , And fixed by an appropriate method such as adhesion. In addition, for example, when the main portion of the mounting plate 2 is made of metal, each pressing portion 21 may be formed by performing a molding process such as press processing on the main portion of the mounting plate 2. When the main part of the mounting plate 2 is a synthetic resin molded product, it may be formed integrally with the main part of the mounting plate 2 by a molding method.
[0026]
Moreover, the tape 3 is produced using the tape material with an adhesive layer by which the layer of adhesive agents, such as an adhesive, is formed in the single side | surface of tape materials, such as a polyester resin material, for example. Thus, the length of the core assembly is approximately matched to the outermost dimension in the direction in which the cores 7 are arranged. This tape 3 is attached to the surface of the I-shaped core member 71 common to the three cores 7 before being fixed to the housing 9 by the adhesive layer on the opposite side to the E-shaped core member 72 side. It has been.
[0027]
Since the through-type choke coil device 1 according to an example of the embodiment of the present invention shown in FIG. 1 has the above-described configuration, the mounting plate 2 has a bending rigidity value in the direction in which the cores 7 are arranged. This can be greatly increased as compared with the case of the mounting plate 6A included in the example choke coil device 8A. Thereby, even if the mounting plate 2 strongly presses the core assembly in order to withstand a large acceleration, the deformation of the mounting plate 2 is small. Therefore, the core 7 at the center is pressed by substantially the same pressing force as the cores 7 at both ends. As a result, even if the core assembly is fixed to the housing 9 by using one mounting plate 2 and four machine screws 83, the choke coil device 1 has an impact resistance that can withstand a large acceleration. Will be able to.
[0028]
Moreover, both the press parts 21 are formed in the site | part facing the leg part of the E-type core member 72, as shown in FIG. Pressing the I-shaped core member 71 with this portion avoids applying a bending moment to the I-shaped core member 71, so that the core assembly is pressed strongly to withstand a large acceleration. However, damage to the I-shaped core member 71 does not occur, and the impact resistance of the choke coil device 1 can also be improved in this respect.
[0029]
Furthermore, since the I-shaped core members 71 constituting the cores 7 used by the core assembly are coupled to each other by the tape 3, when the choke coil device 1 is fixed to the housing 9, The I-shaped core member 71 can be handled as a single component. This facilitates alignment of the core member, increases the weight when handling it as a single component, and reduces the degree of displacement when a finger touches it. The time required can be shortened.
[0030]
In the description so far in the section of the embodiment of the invention, each pressing portion (for example, the pressing portion 21) formed on the mounting plate (for example, the mounting plate 2) provided in the choke coil device (for example, the choke coil device 1). ) Is continuous in the direction in which the cores (for example, cores 7) are arranged, but is not limited to this. For example, each pressing portion is provided for each part facing the respective cores. It may be formed as a row of protrusions formed on the surface.
[0031]
By configuring each pressing portion in such a configuration, the value of the bending rigidity in the direction in which the cores of the mounting plate are arranged is determined at the portion where the protrusion is present in the gap portion between the protrusions. On the other hand, it becomes smaller. Although this is a limited range, it means that the site | part in which the projection part was formed can move separately. As a result, the mounting plate presses each core almost evenly even if there is a slight level difference or unevenness on the surface of each core in contact with the upper cushion body (for example, the upper cushion body 5A). Is possible. At this time, the fact that the upper cushion body is made of an elastic material effectively works to reduce the influence of unevenness and the like on the surface of the core.
[0032]
Further, in the description so far in the section of the embodiment of the invention, the pressing portions formed on the mounting plate provided in the choke coil device are spaced in a direction perpendicular to the direction in which the cores are arranged. Although two are supposed to be arranged, the present invention is not limited to this. For example, three or more may be provided. For example, in the case of using the E-shaped core member 72 as in the case of the choke coil device 1 described above, when three pressing portions are arranged, the third pressing portion is arranged at the center of the E-shaped core member 72. It is preferable to form it at a portion opposite to the leg portion because no bending moment is applied to the I-shaped core member (for example, the I-shaped core member 71).
[0033]
In the description so far in the section of the embodiment of the invention, the number of cores used by the core assembly included in the choke coil device is three, but the number of cores is not limited to this. More than one core may be used. In this case, in the description so far in the section of the embodiment of the invention, the phrase described as “the core at the center in the direction in which the cores are arranged” is used as “the core is arranged. It is necessary to read as “the core in the center or near the center”.
[0034]
Moreover, in the description so far in the section of the embodiment of the invention, the tape-shaped coupling member (for example, the tape 3) provided in the choke coil device is an I-shaped core member that is one core member constituting the core. However, the present invention is not limited to this. For example, the coupling member may be applied to all core members constituting the core. As a result, the work of assembling the core member can be further facilitated.
[0035]
Further, in the description so far in the section of the embodiment of the invention, the tape-like coupling member included in the choke coil device has been attached to the surface on the opposite side to the other core member that forms a pair of a certain core member. However, the present invention is not limited to this, and for example, it may be pasted around all the side surfaces of the core member. However, in that case, it may be preferable to avoid the part where the magnetic gap is formed.
[0036]
Further, in the description so far in the section of the embodiment of the invention, the tape-like coupling member provided in the choke coil device has been applied to the choke coil device having only one mounting plate, but the present invention is not limited thereto. For example, as in the case of the choke coil device 8 of the conventional example described above, the present invention is applied to the case where a plurality of cores used in the core assembly are individually provided with a mounting plate. Is also effective.
[0037]
Furthermore, in the description so far in the section of the embodiment of the invention, the core used in the core assembly provided in the choke coil device is assumed to be composed of an I-shaped core member and an E-shaped core member. However, the present invention is not limited to this. For example, an E-shaped core member and an E-shaped core member, an I-shaped core member and a U-shaped core member, or a U-shaped core member and a U-shaped core member. Of course, a core in which core members are combined may be used.
[0038]
【Example】
Embodiments of the present invention will be described below in detail with reference to the drawings. In the following description of this section, the penetration type choke coil device of the example of the embodiment of the present invention shown in FIGS. 1 and 2 and the conventional penetration type shown in FIGS. The same parts as those of the choke coil device are denoted by the same reference numerals, and the description thereof is omitted.
[0039]
Embodiment 1; FIG. 3 shows a through type choke coil device according to an embodiment of the present invention corresponding to claims 1 and 2, wherein (a) is a side view thereof and (b) is a front view thereof. FIG. In FIG. 3, reference numeral 1A denotes a choke coil device in which a mounting plate 2A is used instead of the mounting plate 6A with respect to the conventional through-type choke coil device 8A shown in FIG.
[0040]
The mounting plate 2A faces the respective cores 7 in place of the pressing portions 21 with respect to the mounting plate 2 provided in the penetration type choke coil device 1 according to the example of the embodiment of the present invention shown in FIG. The difference is that the pressing portions 22 and 22 are formed as a row of protruding portions 22a formed for each portion. In the case of this example, each of the protrusions 22a included in these pressing portions 22 is a main portion of the mounting plate 2A made of a metal plate (the portion excluding both pressing portions 22 of the mounting plate 2A). Is formed integrally with the main part of the mounting plate 2A. In the mounting plate 2A, a through hole (not shown), which is a loading portion of the machine screw 83, is formed in a gap portion between the protruding portions 22a.
[0041]
Since the choke coil device 1A according to the first embodiment has the above-described configuration, the mounting plate 2A greatly increases the value of the bending rigidity in the direction in which the cores 7 are arranged according to the description of the embodiment of the invention. The three cores 7 can be pressed almost evenly. Thereby, even if the core assembly is fixed to the housing 9 by using one mounting plate 2A and four machine screws 83, the choke coil device 1A has an impact resistance that can withstand a large acceleration. It will be possible.
[0042]
Embodiment 2; FIG. 4 is a drawing showing one core member constituting a core provided in a through-type choke coil device according to an embodiment of the present invention corresponding to claim 3, wherein (a) is a side view thereof. Yes, (b) is a front view thereof. In FIG. 4, 3A is a tape-like coupling member, and a tape material with an adhesive layer in which an adhesive layer is formed on one side of a polyester resin tape material is used as a core 7 of a core assembly. Is slightly shorter than the outermost dimension L in the direction in which the elements are arranged. ₃ The tape is cut into pieces. The three I-shaped core members 71 are arranged in a predetermined assembled state before being fixed to a support body (not shown), and the tape 3A is opposite to the E-shaped core member side (not shown). Affixed to the adhesive layer.
[0043]
The three I-shaped core members 71 to which the tape 3A according to Example 2 is attached are, as described in the section of the embodiment of the invention, a plurality of core members when the core member 71 is fixed to the support. 71 can be handled as if it were a single component. As a result, the alignment of the core member is facilitated, and the degree of misalignment when touched by a finger or the like is reduced, so that the time required for the incorporation can be shortened.
[0044]
【The invention's effect】
In the present invention, the configuration described in the section for solving the above-described problems provides the following effects.
(1) By using the configuration described in item (1) of the means for solving the above-mentioned problems, the value of the bending rigidity in the direction in which the cores of the mounting plate are arranged is greatly increased. As a result, the plurality of cores used in the core assembly can be pressed almost evenly. This makes it possible to reduce the manufacturing cost of the through-type choke coil device by about 10% while maintaining the impact resistance. Also,
(2) By adopting the configuration described in the item (2) of the means for solving the above-mentioned problems, a plurality of cores can be more evenly distributed while maintaining the effect of the item (1). By being able to press, it becomes possible to further improve impact resistance. Furthermore,
(3) By adopting the configuration described in the item (3) of the means for solving the above-mentioned problems, when fixing the core member to the support body, a plurality of core members are treated as if they were one component. By being able to handle it, it is possible to reduce the time required for its incorporation, and also from this point, it is possible to reduce the manufacturing cost of the penetration type choke coil device by about 10%.
[Brief description of the drawings]
FIG. 1 is a side view showing an example of an embodiment of a through-type choke coil device according to the present invention.
FIG. 2 is a front view of the through-type choke coil device shown in FIG.
FIG. 3 is a drawing showing a through type choke coil device according to an embodiment of the present invention corresponding to claims 1 and 2, wherein (a) is a side view thereof, and (b) is a front view thereof.
FIG. 4 is a drawing showing one core member constituting a core included in a through-type choke coil device according to an embodiment of the present invention corresponding to claim 3, wherein (a) is a side view thereof, and (b) is a side view thereof. Front view
5A and 5B are drawings showing a conventional through-type choke coil device, in which FIG. 5A is a side view thereof, and FIG. 5B is a front view thereof.
6A and 6B are diagrams showing a through-type choke coil device of a different conventional example, in which FIG. 6A is a side view thereof, and FIG.
7 is an explanatory diagram schematically showing a deformation state of a mounting plate included in the through-type choke coil device shown in FIG. 6;
[Explanation of symbols]
1 Choke coil device
2 Mounting plate
21 Pressing part
3 Bonding member (tape)
5A cushion body
7 cores
71 I-shaped core member
72 E-shaped core member

Claims (3)

A plurality of cores combined so that a window portion is formed using I-shaped and E-shaped, or E-shaped and E-shaped, I-shaped and U-shaped, or U-shaped and U-shaped core members, The core assembly includes a core assembly arranged so that the window portions of the core are connected to each other, a conductor disposed through the window portion, and a screw loading portion, and is used for fixing the core assembly. And a cushioning body made of an elastic material interposed between the mounting plate and the core assembly, and an appropriate support using the mounting plate while pressing the core assembly through the cushioning body. In the penetration type choke coil device fixed to
The mounting plate can simultaneously press a plurality of cores used in the core assembly, and the cushion body is substantially aligned with the portion facing the cushion body in the direction in which the cores are arranged. A penetration type choke coil device comprising a pressing portion that presses locally. In the penetration type choke coil device according to claim 1,
The pressing parts of the mounting plate are arranged in at least two rows at intervals in a direction substantially perpendicular to the direction in which the cores are arranged, and each pressing part is formed for each part facing each core. A through-type choke coil device formed as a row of projected portions. A plurality of cores combined so that a window portion is formed using I-shaped and E-shaped, or E-shaped and E-shaped, I-shaped and U-shaped, or U-shaped and U-shaped core members, The core assembly includes a core assembly arranged so that the window portions of the core are connected to each other, a conductor disposed through the window portion, and a screw loading portion, and is used for fixing the core assembly. And a cushioning body made of an elastic material interposed between the mounting plate and the core assembly, and an appropriate support using the mounting plate while pressing the core assembly through the cushioning body. In the penetration type choke coil device fixed to
A penetration type choke coil device, wherein at least one core member of each of a plurality of cores included in the core assembly is coupled to each other by a tape-shaped coupling member via an adhesive layer.

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