CN211909299U

CN211909299U - Circuit board, inductance coil and inductance

Info

Publication number: CN211909299U
Application number: CN202020486963.8U
Authority: CN
Inventors: 郭庆; 陈守祥
Original assignee: ANHUI EGRETS ELECTRONIC TECHNOLOGY CO LTD
Current assignee: ANHUI EGRETS ELECTRONIC TECHNOLOGY CO LTD
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2020-11-10
Anticipated expiration: 2030-04-03

Abstract

The utility model provides a circuit board, an inductance coil and an inductance, the circuit board comprises a substrate, a plurality of connecting through holes are arranged on the substrate, and the connecting through holes are orderly arranged on the substrate; a wire is laid between the two connecting through holes, an electroplated layer is arranged in each connecting through hole, the connecting through holes are electrically connected with the wire, the plurality of coil monomers are connected in series through the circuit board to form an inductance coil, and the inductance coil is added with a resistance-capacitance component to form an inductance. The utility model discloses a circuit board can carry out series connection to different circuits, especially can establish ties a plurality of coils together to do not influence the magnetic field effect of coil, the utility model discloses an inductance coil can adjust inductance coil's quantity and size as required in a flexible way, can adjust into the inductance of different specifications, inductance value. The utility model discloses well resistance-capacitance components and parts can constantly be adjusted for inductance coils's position, and do not influence inductance coils's life. The utility model discloses still can save the support chassis and practice thrift the cost.

Description

Circuit board, inductance coil and inductance

Technical Field

The utility model relates to an electronic apparatus and measurement auxiliary assembly technical field, concretely relates to circuit board, inductance coils and inductance.

Background

In various inductors, there is an intrinsic characteristic: and (4) resonating. The inductor coil generates self-excited oscillation due to the interaction between the capacitance and the inductance between the inductor coil layers or turns, and the frequency of the self-excited oscillation is called as resonance frequency. When the inductor is used conventionally, the inductor with the resonance frequency far away from the use frequency range is selected, so that the deviation of circuit parameters caused by the resonance of an inductor device is avoided; when the frequency signal used approaches the resonance frequency, the parameters of the device change sharply, and the characteristics of the circuit network connected with the device deviate greatly from the theoretical values.

In order to solve the problem of inhibiting the resonance characteristic of the inductance coil in the production process of the artificial power supply network, the parameters of a resistance-capacitance component for inhibiting the resonance characteristic need to be adjusted repeatedly; the impedance of the EUT port of the artificial power supply network meets the national standard requirement by adjusting the resonance characteristic. In the adjusting process, the adjustment of the position of the resistance-capacitance component is the most complicated thing.

Through retrieval, based on the defects in the prior art, related solutions are disclosed, for example, in chinese patent application No. 92110738.2, an inductance coil is disclosed, which specifically discloses: the structure of the inductance coil is mainly that an annular magnetic core is arranged at a proper position on the induction coil, the annular magnetic core is composed of an annular circular magnetic core and an enameled wire wound on the circular magnetic core, and the annular magnetic core is wound and arranged on the induction coil by means of the enameled wire; the annular magnetic core is used for eliminating alternating current interference generated when radio frequency signals and alternating current signals in the induction coil are transmitted simultaneously, and the response curve of higher frequency is not influenced, so that the effect of improving the frequency bandwidth of carrier signals can be achieved, although the resonance condition is reduced to a certain extent, the scheme still cannot flexibly adjust the installation positions of the resistor and the capacitor according to the requirement, and the problem that the resistor and the capacitor are installed for many times in the conventional product coil cannot be solved.

Disclosure of Invention

1. Technical problem to be solved by the utility model

In order to solve inductance coils in process of production, inconvenient high efficiency perhaps adjust electric capacity, resistance parameter repeatedly to restrain inductance coils resonance characteristic's problem, the utility model provides a circuit board, inductance coils and inductance, the utility model discloses a mode of coil, printed circuit board combination for resistance, capacitance device can connect in coil and circuit board fixed connection department, thereby be convenient for adjust the position of resistance-capacitance components and parts on printed circuit board, improved the efficiency of adjustment inductance resonance characteristic.

2. Technical scheme

The utility model discloses a realize above-mentioned purpose, the technical scheme who adopts as follows:

a circuit board comprises a substrate, wherein a plurality of connecting through holes are formed in the substrate and are orderly arranged; and a lead is laid between the two connecting through holes, an electroplated layer is arranged in each connecting through hole, and each connecting through hole is electrically connected with the corresponding lead.

Preferably, in the circuit board, the wires are printed wires, and the wires are parallel to each other on the substrate.

Preferably, the two ends of the substrate are provided with connecting terminals, plating layers are also arranged in the connecting terminals, the connecting terminals are electrically connected with the leads, and the substrate is connected with other circuits through the connecting terminals.

The utility model provides an inductance coil, includes the coil monomer, still includes foretell circuit board, the coil monomer is a plurality of, and the single P1 of coil, P2 pin are connected with the connect the via hole electricity on the base plate, and each coil monomer is established ties on the base plate.

Preferably, the single coil body is a single-turn coil or a multi-turn coil.

An inductor comprises a resistance-capacitance component and the inductance coil, wherein the resistance-capacitance component is welded and fixed in a connecting through hole in a substrate.

Preferably, a plurality of the resistance-capacitance components may be soldered to the substrate.

Preferably, the two ends of the circuit board are provided with assembly holes, and the inductor is assembled on the equipment through the assembly holes.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following apparent effect:

(1) the utility model discloses a circuit board can carry out series connection to different circuits, especially can be in the same place a plurality of coils establish ties to do not influence the magnetic field effect of coil.

(2) The utility model discloses an inductance coil can adjust inductance coil's quantity and size as required in a flexible way, can adjust into the inductance of different specifications, inductance value, and its application scope is wider. Each coil is fixedly connected with the circuit board, the resistor and the capacitor can be connected at the fixed connection position of the coil and the circuit board, and the efficiency of adjusting the resonance characteristic of the inductor can be improved by adjusting the positions of the resistor and the capacitor on the printed circuit board and the parameters of the resistor and the capacitor, so that the consistency of the inductance parameters is finally ensured.

(3) The utility model discloses when position during adjustment resistance and electric capacity, need not to shell the insulating layer on the coil that has prepared, and coil, resistance, capacitance device install the back on the circuit board, and its installation interface rigidity need not to carry out insulation treatment to the kneck, also can not lead to the short circuit between each interface.

(4) The utility model discloses it is more convenient when well coil, resistance, capacitance device installation are fixed, further improved the production efficiency of inductance.

(5) The utility model discloses can save the supporting framework, only need in the installation, use the supporting framework, after the coil is installed, can directly take out from, the supporting framework can used repeatedly, just the utility model discloses an in the finished product, not contain the supporting framework, further reduced manufacturing cost.

Drawings

Fig. 1 is a schematic diagram of the structure of the middle circuit board of the present invention.

Fig. 2 is a schematic structural diagram of the single-turn coil inductor of the present invention.

Fig. 3 is a schematic structural diagram of the multi-turn coil inductor of the present invention.

Fig. 4 is a schematic structural view of the middle inductor support frame of the present invention.

Fig. 5 is a schematic diagram of a finished product of the middle single-coil inductor of the present invention.

Fig. 6 is a schematic diagram of a finished product of the middle-sized multi-turn inductor of the present invention.

Fig. 7 is a schematic diagram of the distribution parameters of the medium inductance of the present invention.

The reference numerals in the schematic drawings illustrate:

100. a single turn coil; 101. a multi-turn coil 101; 102. a substrate 102; 103. a connecting through hole; 104. an assembly hole; 105. a wiring terminal; 106. a wire; 107. a support framework; 108. and a resistance-capacitance element.

Detailed Description

Example 1

As shown in fig. 1, the present invention provides a circuit board, which can be used to connect other circuits in series, the circuit board includes a substrate 102, and the substrate 102 is made of a non-conductive material, such as a PCB. A plurality of connecting through holes 103 are provided on the substrate 102, and the connecting through holes 103 are arranged in an orderly manner on the substrate 102, for example, two rows of connecting through holes 103 are provided on the substrate 102. A lead 106 is laid between every two connecting through holes 103, the connecting through holes 103 are electrically connected through the lead 106, and the inner side surfaces of the connecting through holes 103 are provided with electroplated layers for conducting electricity, and the electroplated layers are electrically connected with the lead 106. When the circuit board is connected with other circuits in series, the connecting wires of the other circuits can be directly welded in the connecting through holes 103, when a plurality of other circuits need to be connected in series, each other circuit is sequentially connected with one end of two adjacent wires 106, for example, two rows of connecting through holes 103 are arranged on the substrate 102, the first row of connecting through holes 103 are sequentially K11, K21, K31 and K41 … … Kn1, the second row of connecting through holes 103 are sequentially K12, K22, K32 and K42 … … Kn2, wherein K11 and K12 are connected through the wires 106, and K21 and K22 are connected through the wires 106, … … Kn1 and Kn2 are connected through the wires 106. When there are a plurality of other circuits to need the utility model discloses a circuit board is established ties, two lead wires of first other circuit can connect K11 and K22 on the base plate 102 respectively, and two lead wires of second other circuit are connected K21 and K32 … … (n-1) two lead wires of other circuit of (n-1) respectively and are connected K (n-1)1 and Kn2, can all be established ties together other circuit that need establish ties like this.

The conducting wires 106 on the substrate 102 can be printed by adopting the printed conducting wires 106 and are directly printed on the substrate 102, the number of the connecting through holes 103 and the conducting wires 106 can be set according to the number of circuits connected in series according to actual needs, the conducting wires 106 can be arranged in parallel, the parallel arrangement is tidier when being connected with other circuits, the guiding can be selected to be parallel to one of the edges of the substrate 102 or inclined by a certain angle according to needs, the parallel arrangement or the inclination by a certain angle can enable the circuit board to be applied to one part of the magnetic field coil, and the stability of a magnetic field is facilitated. A connecting terminal 105 is further provided on the substrate 102 for connecting the circuit board in series with other circuits, and the connecting terminal 105 may be a connecting through hole 103 at one end of the two outermost wires 106 on the substrate 102, such as K11 and Kn2 on the substrate 102, or K12 and Kn1 on the substrate 102; the connection terminal 105 may be separately disposed at two ends of the substrate 102, the separately disposed connection terminal 105 is a through hole penetrating through the substrate, an electroplated layer is disposed in the through hole, the connection terminal 105 is electrically connected to the connection through hole 103 at two ends of the substrate 102 through a wire 106, the connection terminal 105 may also be directly welded to the welding points at two ends of the substrate 102, and the welding points are electrically connected to the connection through hole 103.

Example 2

As shown in fig. 2, 3, 5 and 6, embodiment 2 provides an inductance coil, which includes a plurality of coil units and the circuit board described in embodiment 1, where two ends of each coil unit are provided with two pins P1 and P2, the two pins of the coil unit are respectively connected to two ends of two adjacent wires 106 on the substrate 102, and the two pins P1 and P2 are connected to different ends of the two adjacent wires 106, for example, the two pins P1 of the first coil unit are connected to the connecting through hole 103K11, the P2 is connected to the connecting through hole 103K22, the pin P1 of the second coil unit is connected to K21, the pin P2 of the second coil unit is connected to the pin P1 of the (n-1) th coil unit … … on K32 on K (n-1), and the P2 is connected to Kn 2. Therefore, the plurality of coil units can be connected in series through the circuit board to form the inductance coil. The inductance coil is used for generating inductance, and two pins of the plurality of coil bodies are respectively connected to the connecting through holes 103 at different ends of the lead 106, so that the inductance value of the whole coil is more favorably formed and stabilized. According to different product requirements, the size of the circuit board and the number of the connecting through holes 103 on the circuit board can be flexibly adjusted. Or the inductance value of the coil can be adjusted by adjusting the number of the coil units under the condition that the circuit board is not changed.

The single coil body can be a single wire which forms an open circular single-turn coil 100, and the two open ends of the single-turn coil 100 are a pin P1 and a pin P2 respectively. The single coil body can also be a multi-turn coil 101 formed by winding an electric wire, and the multi-turn coil 101 is formed by connecting a plurality of circuit boards in series to form an inductance coil.

Example 3

As shown in fig. 5, 6, and 7, embodiment 3 provides an inductor, which includes a resistance-capacitance component 108 and an inductor coil described in embodiment 2, and is used to solve the problem that in the prior art, since the inductor coil is a whole, when the resistance-capacitance component 108 is welded, a coil insulation layer needs to be stripped at a certain position of the inductor coil, after the resistance-capacitance component 108 is welded, the inductor needs to be tested, and if the national standard requirement for impedance of an EUT port of an artificial power supply network cannot be met, other positions need to be stripped again for new welding. The original position still needs to carry out insulation treatment, and after changing the position several times repeatedly, this coil just can't use, need to prepare inductance coils again.

Although the manufacturing method of the inductance coil is also provided in the artificial power network standard, the method has the following defects: (1) the resistor and the capacitor need to be bridged and connected in parallel on the segmented inductance coils, so that the short circuit of adjacent coils is prevented, inductance parameters are prevented from being influenced, the exposed devices need to be insulated, and the operation of the insulation treatment process is complex and difficult. (2) The insulating layer of the coil is stripped in advance at a fixed position for installing the resistor and the capacitor. Since the peeling position of the coil insulating layer is fixed, when the resonance characteristic of the coil needs to be adjusted or suppressed, the position of the resistance-capacitance device cannot be flexibly adjusted.

In this embodiment, the resistance-capacitance component 108 is composed of a resistor and a capacitor connected in parallel, and the resistance-capacitance component 108 is connected in parallel with a part of the coil monomers in the inductance coil to suppress the resonance characteristic of the inductance coil. Because the inductance coil is formed by connecting a plurality of coil monomers in series through the circuit board, the conducting wires 106 on the circuit board are connecting wires of a plurality of coil monomers, the resistance-capacitance component 108 can be welded at any position of the circuit board, and the resistance-capacitance component 108 can be connected with any number of coil monomers in parallel according to the requirement of inhibiting the resonance characteristic. When the position of the resistance-capacitance element 108 needs to be replaced, the position of the resistance-capacitance element 108 relative to the inductance coil can be changed by changing the position of the solder on the circuit board, so that the suppression effect of different resonance characteristics is achieved.

In this embodiment, in order to suppress the resonance characteristic of the inductor, a plurality of rc devices 108 may be soldered to the circuit board, and the size, number, and soldering position of the rc devices 108 may be flexibly adjusted according to the requirement of the impedance. The both ends of circuit board are provided with pilot hole 104 in this embodiment, and pilot hole 104 can be four, sets up respectively in four corners at circuit board both ends, and pilot hole 104 can be other quantity, also can be in other positions of circuit board, through pilot hole 104, can assemble the inductance to equipment.

Example 4

As shown in fig. 4, 6 and 7, this example provides a method for manufacturing an inductor according to example 3, which includes the following steps:

(1) preparing a plurality of hollow coil monomers, wherein the coil monomers are used as components of an inductance coil for subsequent use;

(2) inserting the pins P1 and P2 of the coil single body prepared in the step (1) into the corresponding connecting through hole 103 of the substrate 102, wherein the position of the coil single body corresponding to the connecting through hole 103 is the same as that in the embodiment 2, and welding one pin; the other pin is only required to be inserted into the corresponding connecting through hole 103;

(3) connecting all the coil monomers prepared in the step (1) with the substrate 102 according to the step (2), and inserting the supporting frameworks 107(107) into the coils;

(4) tightening the other pin of the coil monomer which is not welded, further tightening all the coil monomer supporting frameworks 107, closely and orderly arranging the coil monomers on the supporting frameworks 107, and welding the other pin of the coil in the corresponding connecting through hole 103;

(5) the resistance-capacitance elements 108 are soldered to the corresponding connection through holes 103 on the substrate 102.

For the soldered coil unit or the lead of the rc device 108, a part of the lead may protrude in the connecting through hole 103, and the protruding lead may be trimmed.

Further, after the step (5), the support framework 107 inductor can be taken out, glue is coated on the inductor coil which is taken out, the positions of the coil monomers on the inductor coil can be relatively fixed after the glue is coated, the firmness of the whole inductor coil can be improved, and the taken out inductor coil can be repeatedly used when other inductors or inductor coils are prepared.

Claims

1. A circuit board comprising a substrate (102), characterized in that: the substrate (102) is provided with a plurality of connecting through holes (103), and the connecting through holes (103) are orderly arranged; a lead (106) is laid between the two connecting through holes (103), an electroplated layer is arranged in each connecting through hole (103), and the connecting through holes (103) are electrically connected with the lead (106).

2. The circuit board of claim 1, wherein: the conducting wires (106) are printed conducting wires, and the conducting wires (106) are parallel to each other on the substrate (102).

3. The circuit board according to claim 1 or 2, wherein: the two ends of the substrate (102) are provided with connecting terminals (105), an electroplated layer is also arranged in the connecting terminals (105), the connecting terminals (105) are electrically connected with the lead (106), and the substrate (102) is connected with other circuits through the connecting terminals (105).

4. An inductance coil, includes coil monomer, its characterized in that: the circuit board of any one of claims 1 to 3, wherein the number of the coil units is several, the P1 and P2 pins of the coil units are electrically connected with the connecting through holes (103) on the substrate (102), and the coil units are connected in series on the substrate (102).

5. The inductor of claim 4, wherein: the single coil body is a single-turn coil (100) or a multi-turn coil (101).

6. An inductor, characterized by: the inductor comprises a resistance-capacitance component (108) and the inductor coil as claimed in claim 4 or 5, wherein the resistance-capacitance component (108) is welded and fixed in a connecting through hole (103) on a substrate (102).

7. An inductor according to claim 6, characterized in that the resistance-capacitance component (108) is solderable in plurality on the substrate (102).

8. An inductor according to claim 7, characterized in that the circuit board is provided with mounting holes (104) at both ends, through which mounting holes (104) the inductor is mounted on a device.