CN102479600A - The structure of the inductance element - Google Patents

Abstract

The invention relates to a structure of an inductance element, which comprises an upper plate, a lower plate, an inner base material, an outer base material and a metal inner core, wherein the inner base material and the outer base material are positioned at the inner side and the outer side of the metal inner core, the upper end and the lower end of the metal inner core are covered with the upper plate and the lower plate, and the plurality of leads of the upper plate and the lower plate and the plurality of leads of the inner base material and the outer base material can be positioned between the inner side and the outer side of the metal inner core and are electrically conducted in a continuous winding type metal magnetic induction coil, so that the inconvenience of the conventional inductance element using a metal winding configuration is solved, and the assembly convenience and the reliability of the.

Description

The structure of the inductance element

technical field

The invention relates to an inductance element, especially refers to a metal inner core covered with upper and lower plates, and the inner and outer base materials are positioned on the inner and outer sides of the metal inner core, and the plurality of lead wires of the inner and outer base materials are continuously wound and connected with the plurality of wires of the upper and lower plates. , between the inner and outer sides of the metal inner core to form a metal magnetic induction coil effect.

Background technique

Under the high-density assembly of components in electronic products, surface mount components can develop rapidly, and under the consideration of electromagnetic compatibility, the elimination of electromagnetic interference in electronic products has become a basic requirement of electronic products, and more emphasis is placed on the demand and application of inductance.

A general inductor (Inductor) is shown in Figure 11. One or more coils B are wound on a magnetic or non-magnetic core material A, and interact with the core material A after the coil B is energized. At present, the volume of the annular core material A is quite small, and the enameled wire is wound on the annular core material A by manual winding, and then the core material A wrapped with the coil B is carried out by the operator for follow-up operations. There are many disadvantages in the way of operation:

(1) The coil B is wound outside the core material A. Attention must be paid to the adjacent spacing between the coils B. It is easy to cause improper winding conditions where the spacing is too large or too small, and the coil B will be exposed outside the core material A and set upright on the circuit. The surface of the board cannot ensure that there is enough space and insulation distance between the inductance element and the high-voltage element and power supply. Collision or collision with external electronic parts will cause scratches and breakage of the coil B, which will affect the charging and discharging functions of the inductance element. Cause capacitive coupling, electromagnetic interference and combine with other magnetic inductance.

(2) Due to the small size of the core material A, when winding the coil B, it is necessary to completely rely on the production line operators to accurately thread the enameled wire back and forth, so that there is a way to tightly wind the enameled wire on the core material A, but this The process is not only time-consuming and labor-intensive, but also the production cost (personnel expenditure, etc.) is relatively high, which leads to a decrease in the overall process capability, making it impossible to automate mass production.

(3) Different specifications of inductors require different coil B turns. Therefore, the operator must accurately wind the correct number of coil B tightly on the core material A, and this highly manual process requires It is quite easy to be affected by human factors such as the operator's negligence to affect its manufacturing quality and precision, thereby greatly increasing the deviation between the actual specification of the finished product and the preset specification.

Therefore, how to solve the current coil winding method of the inductance element, regardless of the problems derived from the overall structure and manufacturing process, must be improved, which is the direction that the inventor and related manufacturers engaged in this industry are eager to study and improve.

Therefore, in view of the above shortcomings, the inventor collected relevant information, evaluated and considered in many ways, and based on years of experience accumulated in this industry, through continuous trial and modification, he designed the invention patent for the structure of the inductance element. born.

Contents of the invention

The main purpose of the present invention is the annular structure of the inner and outer base materials, which are positioned as the inner and outer sides of the metal inner core, and then the upper and lower plates are covered by the upper and lower ends of the metal inner core, and the multiple wires of the upper and lower plates and the multiple leads of the inner and outer base materials are located in the metal Between the inner and outer sides of the core, there is an electrical conduction of the continuous winding metal magnetic induction coil, which solves the inconvenience of using metal winding configurations for traditional inductance elements, and improves the convenience of assembly and the reliability of the inductance structure.

The secondary purpose of the present invention is to form a continuous winding connection between the plurality of wires of the upper and lower plates and the plurality of leads of the inner and outer base materials located between the inner and outer sides of the metal core, and to make each wire and lead wire completely sealed for current transmission to form a metal core. When the magnetic induction coil has an inductive effect, the formed magnetic field is less likely to interfere with the surrounding electronic components, and the current or signal transmission for the preset circuit board is more stable and the rectification function is good.

Another object of the present invention is to provide groove structures on the adjacent inner and outer connecting parts of the upper and lower plates, so that the upper and lower ends of the inner and outer base materials can be aligned and put in when assembling, so as to increase the convenience of assembly and the firmness effect.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A structure of an inductance element, characterized in that it includes upper and lower plates, inner and outer base materials and a metal inner core, and its improvement lies in:

The inner and outer base materials are connected between the upper and lower plates, and a metal inner core is positioned between the inner and outer base materials, and there are a plurality of wires arranged radially on the surface of the upper and lower plates, and a plurality of wires arranged in a radial pattern on the inner and outer base materials are arranged at intervals with the upper and lower plates. The plurality of lead wires connected by wires cooperate with the plurality of wires and the plurality of lead wires to form a continuous winding metal magnetic induction coil effect electrical conduction between the inner and outer sides of the metal inner core.

Among them: the plurality of conductive wires of the lower plate are processed and formed on the inner surface with conduction holes leading to the outer surface, and the inner surface of the conduction hole is electroplated with metal conductors, and the outer surface of the lower plate is respectively extended with conduction holes. Connected input side, output side.

Wherein: the upper and lower plates are flexible printed circuit boards.

Wherein: the inner and outer substrates are ring-shaped flexible printed circuit boards, and the metal inner core is ring-shaped and positioned between the inner and outer substrates.

Among them: the upper plate has a plurality of contact groups radially outward from the preset circle center, and each contact group has an inner contact point and an outer contact point located on the same radius as the preset circle center, and the inside and outside of the wire are respectively provided with connecting parts , and the inner connection part of the wire is connected to the inner contact point of one contact group, and the outer connection part of the wire is connected to the outer contact point of the other contact group.

Wherein: the outer connection portion of the wire is connected to the outer contact points of one or more adjacent contact groups.

Wherein: turning parts are formed between the inner and outer connecting parts of the plurality of wires on the upper plate.

Wherein: the plurality of lead wires of the inner and outer base materials are in vertical contact with the plurality of wires of the upper and lower plates.

Wherein: the relative inner surfaces of the upper and lower plates are respectively recessed with grooves for positioning the upper and lower ends of the inner and outer base materials.

Compared with prior art, the beneficial effect that the present invention has is:

Therefore, the structure of the inductance element of the present invention is that the key to improving the existing technology is:

(1) The present invention uses the annular structure of the inner base material and the outer base material as the inner and outer sides of the metal inner core to be positioned, and then the upper and lower ends of the metal inner core cover the upper plate and the lower plate, and the wires of the above plate and the wires of the lower plate The wires, the leads of the inner base material and the leads of the outer base material are located between the inner and outer sides of the metal inner core, and are electrically connected to the continuous winding metal magnetic induction coil, which solves the problem of traditional inductance elements using metal winding structures The inconvenience of the shape, to improve the convenience of assembly and the reliability of the inductance structure.

(2) In the present invention, each lead wire of the upper plate, each lead wire of the lower plate, each lead wire of the inner base material, and each lead wire of the outer base material are positioned between the inner and outer sides of the metal inner core to form a continuous winding shape, so that each lead wire And the lead wire is completely sealed inside, when the inductance effect of the metal magnetic induction coil is formed for the current transmission, the formed magnetic field is less likely to interfere with the surrounding electronic components, and the current or signal transmission of the preset circuit board is more stable and rectified Good function.

(3) The present invention uses the structure of the groove at the position of the adjacent inner and outer connecting parts on the surface of the upper plate, and the structure of the groove at the position of the inner surface of the lower plate adjacent to the inner and outer connecting parts, for the inner base material and the outer base material When assembling, the upper and lower ends are aligned respectively to increase the convenience of assembly and the effect of firmness.

Description of drawings

Fig. 1 is the perspective view of the present invention;

Fig. 2 is the three-dimensional exploded view of the present invention;

Fig. 3 is a three-dimensional exploded view of another viewing angle of the present invention;

Fig. 4 is the schematic diagram of upper plate of the present invention;

Figure 5 is an exploded perspective view of the present invention when assembled;

Fig. 6 is a side view sectional view of the present invention assembled;

Figure 7 is a top perspective view of the present invention;

Fig. 8 is a three-dimensional perspective view when the present invention is in use;

Fig. 9 is a three-dimensional exploded view of the present invention assembled in a connector;

Figure 10 is a side sectional view of the present invention assembled in a connector;

Fig. 11 is a perspective view of a conventional inductor.

Explanation of reference signs: 1-upper plate; 10-contact group 111-inner connection part; 101-inner contact 112-outer connection part; 102-outer contact 12-groove; 11-wire; 2-lower plate; 21- Wire 212-outer connection; 211-inner connection 22-groove; 3-inner substrate; 31-lead 32-junction; 4-outer substrate; 41-lead 42-junction; 5-metal inner core ;50-perforation; 6-transmission circuit; 61-through hole 63-input side; 62-metal conductor 64-output side; 7-turning part; 8-connector; 80-docking space 822-contact; 801-capacity Set space 83-multiple terminals; 81-insulation base body 831-docking part; 82-circuit board 832-welding part; 821-circuit; A-core material; B-coil.

Detailed ways

In order to achieve the above-mentioned purpose and effect, the technical means and structure adopted by the present invention, the features and functions of the preferred embodiments of the present invention will be described in detail as follows, so as to facilitate a complete understanding.

Please refer to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, which are the three-dimensional appearance diagram, the three-dimensional exploded view, the three-dimensional exploded view of another angle of view and the schematic diagram of the upper plate of the present invention. It can be clearly seen from the figure that the present invention The structure of the inductive element of the invention includes an upper plate 1, a lower plate 2, an inner base material 3, an outer base material 4 and a metal inner core 5, so the main components and their characteristics of this case are described in detail below; wherein:

The lower surface of the upper plate 1 is processed into a plurality of conductive wires 11 with a predetermined circuit layout arranged radially, and an inner connecting portion 111 and an outer connecting portion 112 are respectively provided on the inner and outer sides of the plurality of conductive wires 11 .

The upper surface of the lower plate 2 is processed into a plurality of wires 21 with a preset circuit layout and arranged radially, and an inner connection part 211 and an outer connection part 212 are respectively provided on the inner and outer sides of the plurality of wires 21, and each inner The outer connection portions 211 , 212 are correspondingly located above the inner and outer connection portions 111 , 112 of the wires 11 of the upper board 1 .

The inner substrate 3 is connected between the upper plate 1 and the lower plate 2, and a plurality of lead wires 31 are arranged and formed at intervals on the outer wall of the inner base material 3, and the plurality of lead wires 31 are provided with joint parts 32 on the upper and lower sides. The portions 32 are respectively correspondingly connected with the inner connecting portion 111 of the upper plate 1 and the inner connecting portion 211 of the lower plate 2 .

The outer base material 4 is outside the inner base material 3 and connected between the upper plate 1 and the lower plate 2, and a plurality of lead wires 41 are arranged at intervals on the inner wall surface of the outer base material 4, and the plurality of lead wires 41 are arranged above and below. There are joint parts 42 , and the upper and lower joint parts 42 are respectively correspondingly connected with the outer connection part 112 of the upper board 1 and the outer connection part 212 of the lower board 2 .

The metal inner core 5 is arranged inside the outer base material 4, and the inside of the metal inner core 5 is provided with a perforation 50 for accommodating the inner base material 3, and the upper and lower sides of the metal inner core 5 are respectively covered with the upper plate 1 and the lower plate 2. .

In addition, in a preferred embodiment of the structure of the inductance element of the present invention, a transmission circuit 6 is provided on the lower plate 2, and the transmission circuit 6 is processed and formed on the connecting portion 22 of the plurality of wires 21 on the inner surface of the lower plate 2 to conduct to the outer surface. The via hole 61, the inside of the via hole 61 can be formed by electroplating to form a metal conductor 62 made of metal materials such as copper, aluminum, nickel or alloy (as shown in FIG. 3 ), and the transmission circuit 6 is placed on the lower plate 2 The outer surface is respectively provided with an input side 63 and an output side 64 which are connected to the corresponding via holes 61 and extend outwards. However, the transmission circuit 6 can also be arranged on the upper board 1 .

In addition, the upper plate 1, the lower plate 2, the inner base material 3 and the outer base material 4 can be flexible printed circuit boards (Flexible Printed Circuit; FPC), which have the characteristics of small, light, flexible, low voltage, and low power consumption. , and the inner base material 3 and the outer base material 4 are processed by etching, melting and spraying, embossing and electroplating to form a plurality of leads 31 and 41 on the surface, while the inner base material 3 and the outer base material 4 are ring-shaped soft permanent printed circuit board, and the metal inner core 5 is positioned between the inner base material 3 and the outer base material 4 in the shape of a ring.

In the preferred embodiment of the structure of the inductance element of the present invention, please refer to shown in Figure 4, wherein the upper plate 1 has a plurality of contact groups 10 that are radially outward from the preset center of circle, and each contact group 10 has a position at a preset position. The inner contact point 101 and the outer contact point 102 on the center of the circle are the same as the radius, and the wire 11 is connected to the inner contact point 101 of a contact group 10 with the inner connection part 111, and the outer connection part 112 of the wire 11 is then connected to the contact group on the other side 10 on the outer contact point 102, after the multiple lead wires 31 of the inner base material 3, the multiple lead wires 41 of the outer base material 4, and the multiple lead wires 21 of the lower plate 2 are connected with this structural design, they are connected in a continuous winding shape. However, the above wires The outer connecting portion 112 of 11 can be connected with the outer contact 102 of one or more adjacent contact groups 10 .

Furthermore, the above-mentioned connection method of the wire 11 of the upper board 1 can also be connected in this connection by the wire 21 of the lower board 2 or the lead 31 of the inner base material 3 or the lead wire 41 of the outer base material 4. The wires 11 of the upper plate 1, the wires 21 of the lower plate 2, the leads 31 of the inner base 3 and the leads 41 of the outer base 4 are located between the inner and outer sides of the metal core 5 to form a continuous winding connection. The way of supplying current transmission to form the inductance effect of the metal magnetic induction coil is sufficient, and all of them should be included in the scope of patent protection of the present invention in the same way.

In addition, turning portions 7 (as shown in FIG. 4 ) are formed between the inner and outer connecting portions 111 and 112 of the plurality of conductors 11 of the upper plate 1, so as to resolve the limited area on the surface of the upper plate 1 and connect the plurality of conductors with each turning portion 7. 11 are effectively wound and separated from each other, so that the wires 11 are arranged radially on the upper plate 1 .

When the above-mentioned components are assembled (please refer to FIG. 5), grooves 12 are respectively recessed at the positions where the inner surface of the upper plate 1 is adjacent to the inner and outer connecting parts 111, 112, and the inner surface of the lower plate 2 is adjacent to the inner surface. The positions of the outer connecting parts 211 and 212 are respectively recessed with grooves 22, so that when the lower ends of the inner base material 3 and the outer base material 4 are respectively placed in the grooves 22 of the lower plate 2, they are in a certain position, so that the inner metal The core 5 is placed between the inner base material 3 and the outer base material 4, and then the upper plate 1 is covered on the top, so that the upper ends of the inner base material 3 and the outer base material 4 are respectively inserted into the grooves 12 of the upper plate 2, As a position-limiting fixation, the upper and lower joints 32 of the plurality of lead wires 31 of the inner base material 3 are respectively aligned with the inner connection portion 111 of the upper plate 1 and the inner connection portion 211 of the lower plate 2, and the plurality of lead wires 41 of the outer base material 4 The upper and lower joints 42 are respectively aligned with the outer joints 112 of the upper plate 1 and the outer joints 212 of the lower plate 2, and the joints 111, 112, 211, 212 are connected to the joints 32, 212 by welding or dispensing. 42 corresponds to the connection (see also shown in Figure 6), for each plurality of lead wires 11, 21 of the upper plate 1 and the lower plate 2 to cooperate with the plurality of lead wires 31, 41 of the inner base material 3 and the outer base material 4, and connect to the metal inner core 5 A continuous winding connection is formed between the inner and outer sides, that is, the structure of the inductance element of the present invention is formed, and an integrated regular structure is formed, which has high reliability, finished product yield and durability, and is suitable for automatic surface mount production of modules , Significantly improve the overall process efficiency and reduce costs.

The structure of the inductance element of the present invention is mainly based on a toroidal inductor (Toroidal Inductor) as a preferred embodiment, and has a toroidal inductance characteristic, self-shielding (closed magnetic circuit), high-efficiency energy conversion, excellent and fast coupling performance between coils Saturation effect, but the inductance structure can also be rectangular, polygonal, hollow frame shape or geometric shape, etc.; the metal inner core 5 can be a magnet inner core, iron inner core, copper inner core or amorphous metal inner core etc., all kinds of magnetic materials, non-magnetic metal materials and other materials.

And the plurality of radial wires 11, 21 of the upper plate 1 and the lower plate 2 are respectively formed and flatly attached to the opposite inner surfaces. 41. The spacing between adjacent intervals is quite accurate, and the adjacent spacing will not be too large or too small, nor will it protrude to the outside, and the number of wires 11, 21, and lead wires 31, 41 can be matched according to the needs of use. Setting, when the current enters from the plurality of input sides 63 on the lower plate 2 (please refer to Fig. 7 and Fig. 8 ), when it passes through the via hole 61 on the bottom surface and the metal conductor 62 to the inner surface, it is connected correspondingly by the inner substrate 3 The lead wire 31 of the upper plate is transmitted to the lead wire 11 of the upper plate 1, and then the lead wire 11 of the upper plate 1 is transmitted to the lead wire 41 of the outer base material 4, and each lead wire 11 of the upper plate 1, each lead wire 21 of the lower plate 2, and the inner base The lead wires 31 of the material 3 and the lead wires 41 of the outer base material 4 are located between the inner and outer sides of the metal inner core 5 to form a continuous winding shape, which is used for current transmission and then forms the inductance effect of the metal magnetic induction coil, and makes the inductive magnetic field surround the Between the plurality of wires 11 and 21 of the upper plate 1 and the lower plate 2, and it is not easy to leak out, and then the current is output from the output side 64 on the lower plate 2 to achieve the purpose of producing a good inductance effect and rectification function, and power supply The inductive element can be stably charged, discharged, rectified, etc., and the inductive magnetic wave generated by the inductive element when the current passes through is not easy to interfere with other surrounding electronic components. At the same time, the formed inductive element does not need to be wound. Therefore, the manufacturing cost can be reduced.

Please refer to Figure 2, Figure 3, Figure 9, and Figure 10, which are the perspective exploded view of the present invention, the perspective exploded view from another perspective, the perspective exploded view assembled in the connector, and the side sectional view assembled in the connector , it can be clearly seen from the figure that the structure of the inductance element of the present invention is used on the connector 8, wherein the insulating base body 81 of the connector 8 is provided with a hollow docking space 80 inside, and the adjacent docking space 80 is An accommodating space 801 is provided, and a circuit board 82 is installed inside the insulating base body 81, and a winding circuit 821 and a plurality of contacts 822 are arranged on the circuit board 82, and the plurality of contacts 822 located on both sides of the circuit board 82 are respectively positioned with A plurality of terminals 83, and the plurality of terminals 83 respectively have a docking portion 831 and a welding portion 832, and the inductance element of the present invention is positioned at the position where the input side 63 of the transmission circuit 6 on the outer surface of the lower plate 2 is connected to the contact point 822 on the circuit board 82, That is, eight inductance elements of the present invention are arranged on the circuit board 82 .

When assembling, use the docking space 80 of the insulating base body 81 for the multiple terminals 83 to pass through, and the docking parts 831 for the multiple terminals 83 respectively extend into the docking space 80 to be elastically stretchable, and the welding parts 832 of the multiple terminals 83, namely They are respectively electrically connected to the plurality of contacts 822 on the circuit board 82, so that the welding part 832 is connected to the input side 63 of the transmission circuit 6 of the lower plate 2 of the inductance element by virtue of the circuit board 82, and then the circuit board 82 is accommodated in the insulating base 81. In the accommodating space 801, the plurality of terminals 83 on one side of the circuit board 82 respectively extend the docking portion 831 to the outside of the insulating base body 81, so as to utilize the insulating base body 81, the circuit board 82, the plurality of terminals 83 and the inductance element of the present invention Groups form connectors.

The above-mentioned connector can be a network connector (R J-45 type) or a high-frequency connector type (universal serial connector U S B3.0), etc., various types of female socket type (or male plug type) electronic The signal connector can be used for relative electrical insertion of the male plug type (or female socket type) electronic signal connector of the opposite type, so as to connect the circuit board 82 with a plurality of terminals 83, and the circuit board 82 is respectively electrically connected to the present invention. The input side 63 of the transmission circuit 6 of the lower plate 2 of the inductance element, and the filtered signal is transmitted outward through the output side 64 of the transmission circuit 6 of the lower plate 2 of the inductance element of the present invention, that is, the plurality of terminals 83 and the external preset relative type If the male plug (or female socket) electronic signal connector is electrically connected, the transmitted signal is filtered, rectified, etc. processed by the inductance element of the present invention on the circuit board 82, and then transmitted outwards via the circuit board.

The protection focus of the present invention is to locate the upper plate 1, the lower plate 2, the inner base material 3 and the outer base material 4 around the metal inner core 5 respectively, so as to utilize the wires 11 of the upper plate 1 and the wires of the lower plate 2. The lead wires 21, the lead wires 31 of the inner base material 3 and the lead wires 41 of the outer base material 4 are located between the inner and outer sides of the metal inner core 5 to form a continuous winding shape, and the inductance effect of the metal magnetic induction coil is formed for electric current transmission, thereby The structure of the inductance element is formed, therefore, all the principles adopted by the present invention and the equivalent structural changes should be included in the scope of the patent of the present invention in the same way.

Therefore, the structure of the inductance element of the present invention is that the key to improving the existing technology is:

(1) The present invention uses the annular structure of the inner base material 3 and the outer base material 4 as the inner and outer sides of the metal inner core 5, and the upper and lower ends of the metal inner core 5 cover the upper plate 1, the lower plate 2, and the upper plate 1. Each wire 11, each wire 21 of the lower plate 2, each lead wire 31 of the inner base material 3 and each lead wire 41 of the outer base material 4 are located between the inner and outer sides of the metal inner core 5, forming a continuous winding metal magnetic induction coil The electrical conduction solves the inconvenience of traditional inductive components using metal winding configurations to improve the convenience of assembly and the reliability of the inductance structure.

(2) The present invention is positioned between the inner and outer sides of the metal inner core 5 through each lead wire 11 of the upper plate material 1, each lead wire 21 of the lower plate material 2, each lead wire 31 of the inner base material 3 and each lead wire 41 of the outer base material 4 Form a continuous winding shape, so that the wires 11, 21 and the lead wires 31, 41 are completely sealed inside, and when the electric current is transmitted to form the inductance effect of the metal magnetic induction coil, the formed magnetic field is less likely to interfere with the surrounding electronic components. The current or signal transmission available for the preset circuit board is relatively stable, and the rectification function is good.

(3) The present invention passes through the groove 12 at the position of the inner and outer connecting parts 111 and 112 on the surface of the upper plate 1, and the groove 22 at the position of the inner and outer connecting parts 211 and 212 on the inner surface of the lower plate 2. The structure allows the upper and lower ends of the inner base material 3 and the outer base material 4 to be aligned and put in respectively when assembling, which increases the convenience of assembly and the firmness effect.

The above description is only illustrative of the present invention, rather than restrictive. Those of ordinary skill in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined in the claims, but All will fall within the protection scope of the present invention.

Claims (9)

1. the structure of an inductance element is characterized in that: include sheet material, inside and outside base material and metal inner core up and down, its improvement is:

Be connected with inside and outside base material between the sheet material up and down; And there is the metal inner core location between the inside and outside base material; And have on the plate surface up and down and be the complex lead that the radiation wire is arranged; And be spaced the plural number lead-in wire that is connected with the complex lead of sheet material up and down on the inside and outside base material, cooperate complex lead and plural number to go between and between metal inner core medial and lateral, form electrically conducting of continuous reeling formula metal magnetic induction loop effect.

2. according to the structure of the said inductance element of claim 1; It is characterized in that: the complex lead of this time sheet material is the via that machine-shaping has conducting to outer surface on inner surface; The internal electroplated metallic conductor that is processed with of via, and the sheet material outer surface position extends input side, the outlet side that is connected with via respectively down.

3. according to the structure of the said inductance element of claim 1, it is characterized in that: sheet material all is flexible printed wiring board up and down.

4. according to the structure of the said inductance element of claim 1, it is characterized in that: this inside and outside base material all is the flexible printed wiring board of ring-type, and the metal inner core to be annular shape be positioned between the inside and outside base material.

5. according to the structure of the said inductance element of claim 1; It is characterized in that: have on the sheet material on this by the preset center of circle and be actinoid plural contact group outwardly; And each contact group has and is positioned at the preset center of circle with the inner contact on the radius, outer contact; And lead is inboard, the outside is respectively equipped with connecting portion, and the inboard connecting portion of lead is connected on the inner contact of a contact group, and its lead outside connecting portion is connected on the outer contact of contact group of opposite side.

6. according to the structure of the said inductance element of claim 5, it is characterized in that: the outside connecting portion of this lead is connected with the outer contact of a group or more adjacent contact group.

7. according to the structure of the said inductance element of claim 5, it is characterized in that: form the turning point between each inboard on this on complex lead of sheet material, the outside connecting portion.

8. according to the structure of the said inductance element of claim 1, it is characterized in that: the plural number lead-in wire of this inside and outside base material is vertical configuration and contacts with the complex lead of sheet material up and down.

9. according to the structure of the said inductance element of claim 1, it is characterized in that: be concaved with the groove that supplies inside and outside base material upper and lower side to insert the location up and down on the sheet material opposite inner face respectively.

Images