JP2005303106A - Inductor and composite element - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inductor component capable of providing a high inductance, wherein electrode leadout at both ends is not in crossing and whereby composite and circuit integration can be attained. <P>SOLUTION: The inductor is configured such that a plumb bob shaped through-hole is formed to an insulation plate body, windings are formed to a plumb bob shaped slope, and electrodes of the inductor are arranged on principal sides of the insulation plate body. Thus, the inductor with a high inductance can be obtained. Further, since the inductor can three-dimensionally be configured, a capacitance component can be produced on the inductor in addition to the inductive component, and a complex element comprising a capacitance component and the inductive component can also be realized. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to an inductor such as a filter and a composite element used for a communication device or the like.

  Conventional inductors usually have a winding that is formed on a cylindrical or columnar insulator, or an inductance that requires an insulated conductor to be wound a plurality of times on the insulator.

  FIG. 11 is a diagram showing an example of the configuration of a conventional inductor. 201 is an insulator for supporting the conductor of the inductor, 202 is a conductor to be a winding of the inductor, 203 and 204 are electrodes, respectively, and are constructed on the insulator of 201 by a method such as plating. A magnetic flux is generated by a winding wound a plurality of times on the insulator 201 to obtain an inductance.

  FIG. 12 is a diagram showing an example of the configuration of a conventional planar inductor. 205 is an insulator that supports the conductor of the inductor, and 206 is a conductor that becomes a winding of the inductor, and is formed in a spiral shape on the insulator of 205 by a method such as plating. Reference numeral 207 denotes one electrode, 208 denotes the other electrode, and 209 denotes an insulator that insulates the lead portion for drawing out the electrode and the conductor constituting the inductor. A magnetic flux is generated by a spiral conductor formed on the insulator 205 to obtain an inductance.

  However, in these inductors, for example, when a winding is wound on a cylindrical insulator, it is necessary to wind a large diameter insulator or a large number of windings around a long insulator in order to obtain a large inductance. In order to obtain a large inductance, the shape becomes large and it is difficult to reduce the size. In addition, since electrodes are formed at both ends, it is necessary to provide a means for connecting the electrodes to each other when a composite circuit element is formed, and a holding material such as a printed circuit board for holding each component is required. It was. Therefore, man-hours are required for assembly, and other members are required, so that it is difficult to reduce the size and cost. As another configuration, a spiral conductor is formed on a plane such as a printed circuit board and an inductor is put into practical use. However, in these plane coil wires, the interlinkage magnetic flux in the central portion is reduced. Therefore, a large inductance could not be obtained. Further, since the electrode lead portion overlaps the conductor of the winding portion, it is necessary to dispose an insulating layer between the lead portion and the winding. In addition, when the inductor is used for signal blocking because the electrode lead-out portion is close to the other end of the winding, there are problems such as the proximity of the input and the output electrode are electrostatically coupled and the effect is lost. It was.

  In the present invention, a plate-like insulator is provided with a weight-like through hole, and a winding portion is provided on the inner slope of the weight-like through-hole to constitute an inductor, and the inductor electrode is drawn out from both sides of the insulator. The electrodes are formed on both sides of the plate-like insulator so that the electrodes do not overlap each other. In addition, the inductor has a high magnetic permeability material disposed in the winding inside the spindle-shaped through hole.

  Further, a plurality of inductors and capacitors are formed and disposed on an insulator to constitute a composite element.

The present invention has a structure in which the winding portion is formed on the inner surface of the weight-shaped through hole with the insulator as the insulator, so that the coupling between the windings is made honey and the inner conductor length of the winding is longer than that of the planar coil. It can take a big inductance. Further, the degree of freedom of inductance can be increased by changing the diameter. Further, since the winding is formed on the inner surface of the weight-shaped through hole, the opening can be made large, and the conductor and winding can be easily processed, and the inductance value can be easily changed.

  Further, by arranging the inductor electrodes having windings in the weight-shaped through holes on both surfaces of the insulator, there is an effect that the winding portions and the electrodes can be reasonably arranged without crossing.

  Further, by forming a winding in the weight-shaped through hole, there is an effect that it is easy to insert a high magnetic permeability material such as ferrite and a large inductance can be obtained with a large magnetic permeability.

  In addition, by forming a winding in a weight-shaped through hole on a plate-shaped insulating material, a plurality of inductors can be efficiently arranged adjacent to each other, and there is an effect of obtaining a large inductance.

  Also, a large inductor can be obtained by mutual induction action by coupling two inductors with a material having high permeability such as ferrite, and unnecessary coupling with other inductors can be avoided.

  In addition, since the inductor of the present invention is formed of a weight-shaped through hole on the insulator, a capacitor can be formed on the insulator, which is a structural material, and a composite circuit of the inductor and the capacitor can be configured. it can.

  In addition, since the structural material is an insulating material and electrodes are formed on both sides, it is easy to connect to a columnar capacitor inserted in a through-hole provided in the insulator, and a composite circuit of a capacitor and an inductor is formed. Can do.

  Further, the inductor and the composite circuit can be formed on an integral insulator, and can be divided after the preparation and rationally mass-produced.

  The present invention according to claim 1 is characterized in that a weight-like through hole is provided in a plate-like insulator and a winding portion is provided on an inner slope of the weight-like through hole to constitute an inductor. Since the windings are formed on the inner surface of the through-holes, the coupling between the windings can be removed, and a large inductor can be obtained by enlarging the weight-shaped holes as necessary. Moreover, since the through-hole which comprises a coil | winding part is weight shape, a conductor and a coil | winding are easy to process from the big side of an opening part.

  The invention of claim 2 is characterized in that the inductor terminal of claim 1 configured as a weight-shaped through-hole is provided with both-side extraction electrodes of an insulator, which is rational without crossing conductors. It makes it possible to pull out automatically.

  The invention of claim 3 is characterized in that when the winding is formed in the weight-shaped through hole, an inductor is formed on the insulator by cutting a conductor on the surface from the wide opening side of the weight-shaped through hole. The winding is easily created.

  The invention according to claim 4 is characterized in that when the winding is formed in the weight-shaped through hole, the conductor on the surface is trimmed by laser trimming from the wide opening side of the weight-shaped through hole. Windings are easily created on an insulator.

The invention of claim 5 is characterized in that the conductor constituting the winding is formed by plating, and the conductor is uniformly formed in an insulator shape.

  The invention of claim 6 is characterized in that the conductor constituting the winding is formed by vapor deposition, and the thin conductor is uniformly formed.

  The invention of claim 7 is characterized in that a material having a high magnetic permeability is inserted into a winding formed in a weight-shaped through hole, and a large inductor is obtained with a large magnetic permeability.

  The invention of claim 8 is characterized in that the material of high permeability inserted into the winding formed in the weight-shaped through-hole is ferrite, and the shape of the high permeability material to be inserted is created. It is easy to obtain a large inductance with good frequency characteristics by using ferrite.

  According to a ninth aspect of the present invention, the inductor of the previous period, which is configured as a weight-shaped through-hole, is formed adjacently on a plate-like insulator, and a plurality of the inductors adjacent to each other are magnetically formed. Combined to obtain a large inductance by mutual inductive action.

  The invention of claim 10 is characterized in that the openings of the weight-shaped through holes of adjacent inductors are arranged in different directions with respect to the surface of the insulator, and the winding portions are efficiently arranged with respect to the area. It can be arranged.

  The eleventh aspect of the invention is characterized in that the inductor of the previous period, which is formed in a weight-shaped through hole, is disposed adjacent to each other, and a material having a high magnetic permeability is disposed on the adjacent winding of the inductor. Thus, two inductors are magnetically coupled with a material having a high magnetic permeability to obtain a large inductor by mutual induction.

  The invention according to claim 12 is characterized in that the inductor of the previous period, which is constituted by a weight-shaped through hole, is disposed adjacently, and the high permeability material disposed on the adjacent winding portion of the inductor is ferrite. The two windings are magnetically coupled by ferrite, and a large inductance with good frequency characteristics is obtained by mutual induction.

  The invention of claim 13 is characterized in that a capacitor is formed by forming opposing electrodes on an insulator constituting the inductor, and constitutes a composite circuit of the inductor and the capacitor.

  According to the invention of claim 14, a columnar capacitor is inserted into a through hole provided in an insulator, and the inductor of the previous period is connected to an inductor electrode disposed on both sides of the insulator, which is configured as a weight-like through hole. It is a feature that facilitates connection with a capacitor and enables the construction of a composite circuit with the capacitor.

  According to a fifteenth aspect of the present invention, a plurality of inductors and capacitors are formed on a single insulator, and a composite element can be configured.

  The invention of claim 16 is a construction method characterized in that the inductor and the composite circuit are formed on a single insulator and divided after the manufacturing, and rationally mass production is possible.

(Embodiment)
FIG. 1 is a cross-sectional view of an inductor according to Embodiment 1 of the present invention. Reference numeral 101 denotes an insulator serving as a structure, 102 denotes a weight-like through-hole that is a part constituting the inductor, 103 denotes a coil portion formed in the weight-like through-hole, and 104 denotes one electrode. Reference numeral 105 denotes the other electrode, and reference numeral 106 denotes a trimming laser beam for processing a winding as an inductor.

  A plate-like insulator 101 is provided with a weight-like through-hole 102 having a slope. The through-hole is weight-like and has a slope with a large opening on one side of the insulator.

  A winding is explained. For example, a conductor is formed on the surface of the insulator 101 and the weight-shaped through hole 102 by plating or vapor deposition. At this time, since the through hole 102 has a weight-like shape, it has a large opening with respect to one surface of the insulator, so that a conductor can be easily formed on the inner surface of the weight from the wide opening side. Next, the trimming laser beam 106 is irradiated from the large side of the opening so that the spiral coil portion 103 remains on the weight surface. And it connects to the electrode of the conductor plated or vapor-deposited on both surfaces of the insulator so as to connect to the electrodes 104 and 105 at both ends of the through hole. The electrodes can be formed by trimming the conductors on both sides of the insulator to the required shape with laser light. Moreover, an inductor can be comprised by plating etc. in order to thicken the electrode and the conductor of a coil | winding part as needed. Even when a spiral conductor is formed on the inner surface of the weight-shaped through hole 102 by laser trimming, since the through hole is weight-shaped and has a sufficient opening on one side of the insulator, the winding portion can be easily and accurately formed. Can be configured.

  Similarly, when the winding part is formed by cutting, the weight-like through hole has a large opening on one side, so that it can be easily cut from the opening side and wound with high accuracy. You can create a line.

  FIG. 2 is a cross-sectional view of the inductor according to the embodiment of the present invention. Reference numeral 101 denotes an insulator serving as a structure, 103 denotes a coil portion formed in a weight-like through hole, and 104 denotes one electrode. Reference numeral 105 denotes the other electrode, and reference numeral 107 denotes a weight-like high permeability material such as ferrite.

  Since the method of forming the winding has been described in the first embodiment, a description thereof will be omitted. In the second embodiment, for example, a spindle having a high magnetic permeability such as ferrite is formed and inserted into the inductor.

  In the present invention, since the through hole constituting the inductor is a weight-like through hole, the core can be easily inserted, and the core is made of a material having high magnetic permeability, so that a large inductance can be obtained. . At this time, the shape of the core is matched to the inner shape of the winding to make it a weight, which further facilitates insertion and better coupling with the winding, and easily creates an inductor with a large inductance. can do. Further, if ferrite is used as a material having high magnetic permeability, a shape suitable for insertion can be easily formed by forming and then sintering the shape, and an inductor having good high frequency characteristics can be configured.

  FIG. 3 is a cross-sectional view of the inductor according to the embodiment of the present invention. 101 is an insulator serving as a structure, 108 is a first inductor configured as a weight-shaped through hole, 109 is a second inductor configured as a weight-shaped through hole, 110 is one electrode, and 111 is the other. , 112 is an electrode connecting the first and second inductors, and 113 is a magnetic flux interlinking with the first and second inductors.

  In the present invention, since the winding is formed on the inner surface of the weight-like through hole of the plate-like insulator, a plurality of windings can be formed on the integral insulator. In the third embodiment, the first inductor 108 and the second inductor 109 configured on the insulator 101 will be described.

  The first inductor 108 and the second inductor 109 are arranged close to each other on the insulator. Accordingly, magnetic fluxes are linked to each other, and a large inductor can be obtained by the mutual induction effect.

Since the winding is formed on the weight-shaped through hole, the distance between the windings can be reduced by forming the weight-shaped through hole from opposite surfaces as shown in FIG. Can be made nectar and a larger inductance can be obtained.

  Here, the windings of the weights opposed to each other are formed on the surface of the insulator. However, even if a weighted inductor is formed in the same direction with respect to the surface of the insulator, a large inductance is generated by the mutual inductor. Obviously it is possible to obtain.

  FIG. 4 is a cross-sectional view of the inductor according to the embodiment of the present invention. 101 is an insulator to be a structure body, 114 is a first inductor formed on the insulator and made by the above method, and 115 is made by the above method and is arranged close to the first inductor 114. Second inductor. 116 is one electrode, 117 is the other electrode, 118 is an electrode connecting the first and second inductors, 119 is arranged on an insulator, and is highly transparent such as ferrite that magnetically couples the two inductors 113 and 114. It is a core made of a magnetic material. 120 is a second core made of a high permeability material such as ferrite that is disposed on an insulator and magnetically couples two inductors 114 and 115 formed in a weight-like through hole on the insulator; Reference numeral 121 denotes a magnetic flux interlinking with the two windings 114 and 115.

  The two inductors 114 and 115 are arranged close to each other and are two high-permeability cores that are magnetically coupled at both ends of the winding. Accordingly, the magnetic fluxes of the respective inductors are linked to each other, and a large inductor can be obtained by the mutual induction action. In addition, since the winding is formed on the weight-shaped through hole, the distance between the windings can be reduced by forming the weight-shaped through hole from different surfaces. For this reason, it is possible to arrange the couplings between the windings in a niche, and a large inductance can be obtained. Further, unnecessary magnetic coupling with other windings can be avoided by sandwiching with a material having high magnetic permeability.

  In the embodiment shown in FIG. 4, weight-shaped windings are formed on different surfaces, but even if a weight-shaped inductor is formed in the same direction, a large inductance can be obtained by the mutual inductor. Obviously it is possible.

  In FIG. 4, the cores are arranged on both sides of the insulator, but it is obvious that a large inductance can be obtained by the mutual inductor even if only one of the insulators is arranged.

  FIG. 5 is a cross-sectional view of a composite part constituting the parallel resonant circuit in the embodiment, and FIG. 6 is a diagram showing an example of an equivalent circuit thereof. 101 is an insulator as a structure, 122 is an inductor formed on the slope of the weight-shaped through hole of the insulator, 123 is an electrode drawn from one side of the inductor, and 124 is the other side drawn from the other side of the inductor. An electrode 125 is a capacitor formed by opposing electrodes 123 and 124. Reference numeral 126 denotes a third electrode on the insulator, and 127 denotes a capacitor constituted by the third electrode 126. The electrodes 123 and 124 are opposed to each other with an insulator interposed therebetween to form a capacitance. Accordingly, the parallel resonance can be easily configured together with the inductor 122 formed by the above-described method and the capacitance formed by the electrodes. In addition, it is possible to configure a capacitance by providing the third electrode 126 having a gap on one surface on the surface of the insulator, so that a circuit block can be easily configured. 6 is an equivalent circuit thereof. The inductor 128 is composed of the inductor 122 in FIG. 5, the capacitor 129 is composed of the capacitor 125 composed of the electrodes 123 and 124 in FIG. 5, and the capacitor 130 is composed of the electrode 124 and the third electrode 126 in FIG. Corresponds to the capacitor 127 to be used.

FIG. 7 is a cross-sectional view of a composite part constituting the parallel resonant circuit in the embodiment, and FIG. 8 is a diagram showing an example of an equivalent circuit thereof. Reference numeral 101 denotes an insulator serving as a structure, 131 denotes an inductor formed on the slope of the weight-shaped through hole of the insulator, 132 denotes an electrode drawn from one of the inductors, 1
Similarly, 33 is the other electrode drawn from the other side of the inductor. Reference numeral 134 denotes a through hole formed in the insulator. Reference numeral 135 denotes a capacitor having electrodes inserted into the through holes 134 at both ends. Reference numeral 136 denotes a third electrode on the insulator, and reference numeral 137 denotes a capacitor constituted by the third electrode 136 and the electrode. Since the inductor 131 configured on the slope of the spindle-shaped through-hole forms electrodes on both sides of the insulator, a capacitor as in the case can be arranged in the through-hole to connect the electrodes. With such a configuration, it is possible to use a capacitor larger than the capacitor formed on the opposing insulator, and to make the temperature characteristics required of the capacitor different from those of the insulator holding the winding. It is possible to configure a complex circuit such as a stable and small resonance circuit. 8 is an equivalent circuit thereof. Inductor 139 corresponds to inductor 131 in FIG. 7, capacitor 140 corresponds to capacitor 135 in FIG. 7, and capacitor 141 corresponds to capacitor 137 formed by electrode 135 and third electrode 136 in FIG. .

  FIG. 9A is a diagram showing a configuration example in which a composite element is configured using an inductor and a capacitor in the embodiment, and FIG. 9B is a diagram showing an equivalent circuit thereof. In the structure diagram and the equivalent circuit of FIG. 9, 101 is an insulator as a structure, 142 is a first inductor formed on the slope of the weight-shaped through hole of the insulator, and 143 is an electrode drawn from one of the inductors , 144 is a coupling capacitor similarly composed of electrodes, 145 is a second inductor composed of a weight-shaped through hole, 146 is a third capacitor composed of electrodes, and is a second inductor In addition, a resonance circuit is configured. Reference numeral 147 denotes a coupling capacitor composed of electrodes. With such a configuration, a bandpass circuit as shown in the equivalent circuit of FIG. 9 can be easily formed on the integrated insulator.

  FIG. 10 shows a diagram formed by dividing into a plurality. Reference numerals 148, 149, and 150 are disposed on the integrated insulator 101, and are inductors each having a weight-shaped through hole. After these inductors are trimmed by, for example, laser trimming to form winding portions to form inductors, a plurality of inductors can be manufactured at the same time by dividing the inductors at division positions 151, 152, and 153, respectively.

  In this way, if an inductor configured on the slope of the weight-shaped through hole is used, a plurality of inductors and capacitors can be configured on an integrated insulator, and there is no crossing of electrodes, and it is thin and has high honey level. It is possible to create a composite circuit element having a large inductor and capable of handling a low frequency, which has been difficult in the prior art.

  Although the description of the present invention has been made only with an inductor and a capacitor formed on an insulator, it is obvious that a composite circuit can be formed using circuit elements such as resistors and semiconductors.

  The inductor of the present invention has a large inductance and can be combined with a capacitor having a large capacity. Moreover, there is no crossing of the electrodes in the winding part, and it is suitable for a composite circuit element including a plurality of inductors. Therefore, it is possible to cope with a low frequency by using the inductor of the structure of the present invention for a composite circuit element including a multi-stage inductor element, which can be configured only at a relatively high frequency in the past. Suitable for complex circuit elements such as bandpass filters. In addition, a ceramic material can be used as the structure, and parts rich in heat resistance can be used. Since the structure can also be composed of a planar insulator, it can be applied to parts suitable for reflow soldering.

Sectional view of inductor in the embodiment of the present invention Sectional view of inductor in the embodiment of the present invention Sectional view of inductor in the embodiment of the present invention Sectional view of inductor in the embodiment of the present invention Sectional drawing of the composite component which comprises the parallel resonant circuit in embodiment The figure which shows an example of the equivalent circuit Sectional drawing of the composite component which comprises the parallel resonant circuit in embodiment The figure which shows an example of the equivalent circuit (A) The figure which shows the form example which comprised the composite element using the inductor and capacitor | condenser in embodiment, (b) The figure which shows the equivalent circuit Figure created by dividing and dividing Diagram showing an example of the configuration of a conventional inductor The figure which shows an example of a structure of the conventional planar inductor

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Insulator 102 Conical through-hole 103 Coil part 104, 105 Electrode 106 Trimming laser beam 107 Ferrite 108, 109 Inductor 110, 111, 112 Electrode 113 Magnetic flux 114, 115 Inductor 116, 117, 118 Electrode 119, 120 Ferrite 121 Magnetic flux 122 Inductor 123, 124 Electrode 125 Capacitor 126 Third electrode 127 Capacitor 128 Inductor 129 Capacitor 130 Capacitor 131 Inductor 132, 133 Electrode 134 Through-hole 135 Capacitor 136 Third electrode 137 Capacitor 139 Inductor 140, 141 Capacitor 142 Inductor 143, 144 capacitor 145 inductor 146, 147 capacitor 148, 149, 150 Kuta 151, 152, 153 Division position 201 Insulator 202 Conductor 203 Electrode 204 Electrode 205 Insulator 206 Conductor 207 Electrode 208 Electrode 209 Insulator

Claims (16)

A plate-like insulator is provided with a weight-like through hole having an inclined portion,
An inductor characterized by comprising a winding inside. Place each electrode of the inductor on both sides of the insulator,
2. The inductor according to claim 1, wherein each end face of the through hole is connected to an electrode. To the planar conductor arranged in the inclined part,
The inductor according to claim 1 or 2, wherein the winding is formed by cutting a conductor in a spiral shape. From the planar conductor arranged in the inclined part,
The inductor according to claim 1 or 2, wherein the winding is formed by laser trimming in a spiral shape. The inductor according to claim 1, wherein the conductor is formed by plating. 5. The inductor according to claim 1, wherein the conductor is formed by vapor deposition. A plate-like insulator is provided with a weight-like through hole having an inclined portion,
Configure the winding inside it,
7. The inductor according to claim 1, wherein a material having high magnetic permeability is disposed inside the winding. A plate-like insulator is provided with a weight-like through hole having an inclined portion,
Configure the winding inside it,
The material with high permeability placed inside the winding is
The inductor according to claim 7, wherein the inductor is ferrite. A plate-like insulator is provided with a weight-like through hole having an inclined portion,
A plurality of inductors with windings inside,
9. The inductor according to claim 1, wherein the inductors are arranged so as to be magnetically coupled to each other. The plate-like insulator is provided with a weight-like through hole having an inclined portion,
A plurality of inductors with windings inside them
Adjacent inductor through-holes
10. The inductor according to claim 9, wherein the inductors are arranged so that large openings are located on different surface sides of the insulator. The plate-like insulator is provided with a weight-like through hole having an inclined portion,
On the surface between adjacent inductors of a plurality of inductors that constitute windings inside,
11. The inductor according to claim 9, wherein a plate-like material having high magnetic permeability is provided. The plate-like insulator is provided with a weight-like through hole having an inclined portion,
A plate-like high magnetic permeability material provided on the surface between adjacent inductors of a plurality of inductors that constitute a winding inside thereof,
The inductor according to claim 11, wherein the inductor is ferrite. The plate-like insulator is provided with a weight-like through hole having an inclined portion,
On both sides of the insulator that constitutes the inductor that forms the winding inside,
Each opposing electrode is arranged to constitute a capacitance part,
An inductor comprising a circuit in combination with the inductor. Providing a through hole in the insulator;
Place a capacitor in the through hole,
Of the inductor configured on the slope of the weight-shaped through hole configured on the surface of the insulator,
A composite element characterized by being connected to an electrode. The plate-like insulator is provided with a weight-like through hole having an inclined portion,
Configure multiple inductors with windings inside,
An inductor composite element characterized by being an assembly of inductors. After creating multiple inductors and inductor composite elements on a single insulator,
16. The method of manufacturing an inductor and a composite element according to claim 1, wherein the insulator is divided.

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