CN202758706U - Improved structure of inductor - Google Patents

Abstract

The utility model relates to an inductor improvement structure, this inductor improvement structure includes: two iron cores and a winding group. The two iron cores are respectively provided with a first magnetizer, two ends of each first magnetizer are respectively extended with a second magnetizer, each second magnetizer is mutually vertical to the first magnetizer and respectively provided with end faces, wherein the two iron cores are correspondingly arranged, and an air gap is formed between the corresponding arrangement positions of the end faces. The winding group is wound on each first magnetizer of the two iron cores. The winding set is directly wound on the iron core, so that the manufacture of the inductor is simplified, the automatic production can be realized, the size of the inductor is reduced, and the manufacture cost is reduced. The winding set is far away from the air gap of the iron core, so that the efficiency of the inductor is better.

Description

Improved Structure of Inductors

technical field

The utility model relates to an iron core, in particular to an iron core structure with a linearly changing inductance value.

Background technique

Inductor (Inductor), also known as coil (coil), is a kind of passive component. It has electronic components that resist any current change. It is composed of a coil wound around a core material. The core material can be a magnetic material or a non-magnetic material. An inductor is a component made of a magnetic field phenomenon that produces a change in magnetic flux by changing the coil current. The source of the magnetic field is the flow of electric charges, that is, current. The alternating current will generate a magnetic field, and the changing magnetic field will induce a current. The ratio of its linear relationship is called inductance.

Usually only a single wire is wound, there will be self-inductance, and more than one wire is wound, then there is mutual inductance. The function of an inductor is to filter the noise in the current, stabilize the current in the circuit, and prevent electromagnetic wave interference. The function is similar to that of a capacitor. It also stores and releases the electric energy in the circuit to adjust the stability of the current, but the capacitor is based on the electric field (charge) to store electrical energy, while inductance is achieved in the form of a magnetic field.

Electricity and magnetism can be converted to each other, and a magnetic field will be generated around the wire through which the current flows; on the contrary, a current will be generated in the coil cutting the magnetic force line. The structure of the inductor is to wind the wires into coils close to each other. When the current flows, it will be filled with magnetic energy. When the current becomes smaller, the magnetic energy in the coil will generate a force to prevent the current from changing.

As shown in FIG. 1 , a traditional inductor includes: two E-shaped iron cores 10a, a winding frame 20a and a winding group 30a. When the inductor is manufactured, the winding group 30a is wound on the winding frame 20a, and the magnetic conductor 101a in the center of the two E-shaped iron cores 10a is passed through the winding frame 20a, and the manufacturing of the inductor is completed. Since the winding group 30a needs a multi-axis winding machine to wind the copper wires on the winding frame 20a during the manufacture of the inductor, the winding machine cannot be used for automatic production. Moreover, winding the copper wire on the bobbin 20a and then assembling with the two iron cores 10a will result in a bulky inductor and increase the cost of the inductor.

In addition, there is also a toroidal inductor, which has a toroidal core and a winding group wound on the toroidal core. Since the iron core used in the toroidal inductor is toroidal, it cannot be placed in a general The automatic winding production on the automatic winding machine must also be wound manually, which causes troubles in production.

After the above two inductors are assembled, the winding group 30a wound on the winding frame 20a is located on the air gap of the two iron cores 10a or the winding group of the ring inductor is directly wound on the air gap of the ring core. On the other hand, when the magnetic flux leakage phenomenon occurs in the air gap, it will affect the current flowing through the winding group, so that the efficiency of the inductor will be deteriorated.

Utility model content

In view of this, the main purpose of the utility model is to solve the traditional disadvantages, simplify the manufacture of inductors, enable automatic winding production on a winding machine, reduce the volume of inductors and reduce manufacturing costs.

In view of this, another purpose of the present invention is to keep the winding group away from the air gap of the iron core, so that the performance of the inductor is better.

In view of this, another object of the present invention is to adjust the inductance value of the inductor linearly, so as to improve the performance of the inductor, prevent magnetic flux leakage and avoid damage to the inductor due to overheating.

In order to achieve the above purpose, the utility model provides an improved structure of an inductor, which includes: two iron cores, each of which has a first magnetic conductor, and each of the two ends of the first magnetic conductor extends with a second Two magnetic conductors, each of the second magnetic conductors is perpendicular to the first magnetic conductor, and has end faces respectively, wherein the two iron cores are set up correspondingly, and an air gap is formed between the corresponding positions of the end faces; The winding group is wound on the two first magnetic conductors of the two iron cores, and the winding group has an input end and an output end.

Wherein, the first magnetizer and the second magnetizer are square, and the surfaces of the first magnetizer and the second magnetizer are smooth surfaces.

Wherein, each of the second magnetizers has grooves.

Wherein, the groove is stepped.

Wherein, the first magnetizer and the second magnetizer are circular, and the surfaces of the first magnetizer and the second magnetizer are smooth surfaces.

Wherein, each of the second magnetizers has grooves.

Wherein, the groove is stepped.

In order to achieve the above object, the utility model provides another improved structure of the inductor, the improved structure of the inductor includes: two iron cores, each of which has a first magnetic conductor, and each of the two ends of the first magnetic conductor extends with The second magnetic conductor, each of which is perpendicular to the first magnetic conductor and has end faces respectively, wherein the two iron cores are set up correspondingly, and an air gap is formed between the corresponding positions of the end faces ; Winding group, including: a first winding group, used to wind on the first magnetic conductor of one of the iron cores, the first winding group has an input end and an output end; the second winding group, It is used to be wound on the first magnetic conductor of another iron core, and the second winding group has an input end and an output end.

Wherein, the first magnetizer and the second magnetizer are square, and the surfaces of the first magnetizer and the second magnetizer are smooth surfaces.

Wherein, each of the second magnetizers has grooves.

Wherein, the groove is stepped.

Wherein, the first magnetizer and the second magnetizer are circular, and the surfaces of the first magnetizer and the second magnetizer are smooth surfaces.

Wherein, each of the second magnetizers has grooves.

Wherein, the groove is stepped.

Compared with the prior art, the utility model directly winds the winding group on the iron core, eliminates the processing and production of the winding frame, simplifies the production of the inductor, and can be automatically wound on the winding machine to make the inductor The size of the inductor is reduced and the production cost is reduced; in addition, the utility model directly winds the winding group on the iron core, so that the winding group is far away from the air gap of the iron core, so that the performance of the inductor is better; in addition, the utility model The new type adds an air gap with a linear change to the iron core, which can adjust the inductance value of the inductor with a linear change, so that the performance of the inductor is better, and it can prevent magnetic flux leakage and avoid overheating damage to the inductor.

Description of drawings

FIG. 1 is an exploded schematic diagram of a traditional inductor structure;

Fig. 2 is the exploded schematic diagram of the first kind of inductor structure of the present utility model;

FIG. 3 is a combined schematic diagram of the inductor structure of FIG. 2;

FIG. 4 is a schematic front view of the inductor structure of FIG. 2;

Fig. 5 is the schematic front view of the second inductor structure of the present invention;

6A to 6C are schematic diagrams of air gap changes in another embodiment of the two iron cores of the present invention;

Fig. 7 is a schematic diagram of the linear change curve of the inductance value of the present invention;

Fig. 8 is a schematic diagram of another embodiment of the present utility model.

Explanation of reference signs

Iron core 10a Magnetic conductor 101a

Winding frame 20a Winding group 30a

Iron core 1 first magnet conductor 11

Free end 12 Second magnet conductor 13

End face 131 Winding group 2

Input 21 Output 22

Air gap 3 Iron core 4

The first magnet guide 41 Free end 42

Second magnet conductor 43 End face 431

Winding group 5 The first winding group 51

The second winding group 52 Input terminals 511, 521

Output port 512, 522 Air gap 6

Groove 7 Tread 71

Riser 72 Air gap 73, 73a, 73b, 73c

Magnetic flux 8

Detailed ways

The technical content and detailed description of the present utility model will be described as follows with the accompanying drawings, but the attached drawings are only for illustration purposes and are not intended to limit the present utility model.

Please refer to FIG. 2 , which is an exploded schematic view of the first inductor structure of the present invention. As shown in the figure: the inductor structure of the present invention includes two iron cores 1 and winding groups 2 .

The two iron cores 1 are U-shaped, and each of the two iron cores 1 has a first magnetizer 11, and the first magnetizer 11 has two free ends 12, and the two free ends 12 are respectively extended with second guides. The magnet 13, the second magnetizer 13 and the first magnetizer 11 are perpendicular to each other. In this figure, the first magnetic conductor 11 and the second magnetic conductor 13 are square, and the surface is smooth to facilitate automatic winding on the winding machine.

The winding group 2 is a copper enameled wire for winding on each of the first magnetic conductors 11 of the two iron cores 1 .

Please refer to FIG. 3 and FIG. 4 , which are schematic diagrams of combination and front view of the inductor structure in FIG. 2 , respectively. As shown in the figure: when making the inductor structure of the present utility model, two iron cores 1 are placed on the winding machine (not shown in the figure) earlier, so that each of the second magnetic conductors of the two iron cores 1 Each two end surfaces 131 of 13 form a corresponding arrangement, and an air gap 3 is formed between the two end surfaces 131 .

After the two iron cores 1 are fixed on the winding machine, the copper enameled wire is directly wound on the first magnetic conductor 11 of the first iron core 1, and wound on the first magnetic conductor 11 of the first iron core 1 After completion, the enameled wire is drawn to the second first magnetic conductor 11 of the iron core 1 and wound, and the winding group 2 formed after the enameled wire is wound is located on the two first magnetic conductors 11 . And the wound winding group 2 has an input end 21 and an output end 22 to form a filter inductor.

Since the above-mentioned inductor structure is that the winding group 2 is directly wound on the iron core 1, the traditional processing procedure of first winding the winding group on the bobbin frame can be saved, and the manufacturing cost can be reduced at the same time, so that the inductor The size of the device structure is reduced. Moreover, the winding group 2 is directly wound on the first magnetic conductor 11 of the iron core 1, so that the winding group 2 is kept away from the air gap 3, and when the magnetic flux leakage phenomenon occurs in the air gap 3, the magnetic flux leakage will not affect the The current on the winding set 2 prevents the efficiency of the inductor structure from being reduced.

Please refer to FIG. 5 , which is a schematic front view of the second inductor structure of the present invention. As shown in the figure: the inductor structure of the present invention includes two iron cores 4 and winding groups 5 .

The two iron cores 4 are U-shaped, and each of the two iron cores 4 has a first magnetizer 41, and the first magnetizer 41 has two free ends 42, and each of the two free ends 42 is extended with a second guide. The magnet 43 , the second magnetizer 43 and the first magnetizer 41 are perpendicular to each other. In this figure, the first magnetic conductor 41 and the second magnetic conductor 43 are square or circular, and the surface is smooth to facilitate automatic winding on the winding machine.

The winding group 5 is copper enameled wire, has a first winding group 51 and a second winding group 52, the first winding group 51 is wound on the first magnetizer 41, and the second winding group 52 Wound on the other first magnetic conductor 41 , the winding set 5 also has two input ends 511 , 521 and two output ends 512 , 522 .

When making this inductor structure, first place the two iron cores 4 on the winding machine (not shown in the figure), so that each of the two end faces 431 of the second magnetic conductor 43 of the two iron cores 4 is formed The configuration is corresponding, and an air gap 6 is formed between the two end surfaces 431 .

After the two iron cores 4 are fixed on the winding machine, the copper enameled wire is directly wound on the first magnetic conductor 41 of the first iron core 4, and on the first magnetic conductor 41 of the first iron core 4 After the winding is completed, the first winding group 51 on the first magnetic conductor 41 is formed. Then, the winding of the second winding group 52 of the first magnetic conductor 41 of the second iron core 4 is carried out. There are two input terminals 511, 521 and two output terminals 512, 522 on the wound winding group 5 to form a common mode filter inductor.

Since the structure of the above-mentioned common mode filter inductor is that the first winding group 51 and the second winding group 52 of the winding group 5 are directly wound on the two cores 4, it can save the traditional winding of the winding group first. The processing procedure on the bobbin frame can reduce the manufacturing cost and reduce the volume of the inductor structure. And, the first winding group 51 and the second winding group 52 of the winding group 5 are directly wound on each of the first magnetic conductors 41 of the two iron cores 4, so that the first winding group 5 of the winding group 5 The wire group 51 and the second winding group 52 are far away from the air gap 6. When the magnetic flux leakage phenomenon occurs in the air gap 6, the magnetic flux leakage will not affect the first winding group 51 and the second winding group 5 of the winding group 5. The current on the wire set 52 is such that the performance of the inductor structure is not degraded.

Please refer to FIG. 6A to FIG. 6C , which are schematic diagrams of the air gap variation of another embodiment of the two iron cores of the present invention, and please refer to FIG. 7 , which is a schematic diagram of the linear variation curve of the inductance value of the present invention. As shown in the figure: firstly, there are grooves 7 on the two end surfaces of the two second magnetizers 13, and the grooves 7 are stepped or V-shaped. on the form. The stepped groove 7 is composed of more than two continuous treads 71 and kicking surfaces 72, and the two or more treads 71 on each of the grooves 7 of the two second magnetic conductors 13 are formed with different spacings. The air gap 73 allows the inductor structure to adjust the inductance value linearly with the power consumption of the load.

When the two iron cores 1 are put on the winding group 2 (as shown in Figure 2), after the winding group is energized, when the power consumption of the load connected to the inductor structure is light load, the magnetic circuit of the magnetic force line 8 will be The first group of smaller air gaps 73a formed between the two treads 71 of the first group in the groove 7 pass through, relatively making the inductance value of the inductor structure higher.

When the power consumption of the load increases, and after the first group of air gaps 73a are magnetically saturated, the magnetic circuit of the magnetic force line 8 will change the second group of air gaps 73b formed between the two treads 71 of the second group Through, at this time, the inductance value of the inductor structure also decreases (as in position A in FIG. 7 ).

When the power consumption of the load increases again (heavy load), and after the second group of air gaps 73b are magnetically saturated, the magnetic circuit of the magnetic lines of force 8 will change to the third group formed between the third group of treads 71. The air gap 73c passes through, and at this time, the inductance value of the inductor structure drops again (as shown in position B of FIG. 7 ).

It can be seen that there are air gaps 73 with different spacings between the more than two treads 71 on the grooves 7 of the stepped end faces of the two second magnetizers 13, and the air gaps 73 are under load (not shown in the figure). ) when the consumed power gradually increases, the inductance value of the inductor structure can be adjusted in a linear change manner, so that the performance of the inductor structure is better, and the inductor structure will not overheat.

Please refer to FIG. 8 , which is a schematic diagram of another embodiment of the present invention. As shown in the figure: in addition to the groove 7 of the second magnetizer 13 of the iron core 1 of the present invention being in the shape of a square ladder, each of the grooves 7 of the second magnetizer 13 can also be in the shape of a circular ladder. Therefore, when the grooves 7 of the two circular stepped end faces correspond, the more than two treads 71 on the grooves 7 of the two stepped end faces also form air gaps 73 with different pitches, and the air gaps 73 follow the The power consumed by the load (not shown in the figure) increases gradually, and the inductance value of the inductor structure can be adjusted in a linear manner to make the efficiency of the inductor structure better.

The above descriptions are only specific descriptions of preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Any other equivalent transformations shall fall within the scope of the claims of the present application.

Claims (14)

1. an inductor improved structure is characterized in that, this inductor improved structure comprises:

Two iron cores, respectively this iron core has the first magnetic conductor, respectively these the first magnetic conductor two ends respectively are extended with the second magnetic conductor, respectively this second magnetic conductor is mutually vertical with described the first magnetic conductor, and has respectively end face, wherein said two iron core correspondences are set up, and are formed with air gap between the corresponding placement of described end face;

The coiling group is wrapped on described two first magnetic conductors of described two iron cores, has input and output on this coiling group.

2. inductor improved structure as claimed in claim 1 is characterized in that, described the first magnetic conductor and described the second magnetic conductor are square, and the surface of described the first magnetic conductor and described the second magnetic conductor is even surface.

3. inductor improved structure as claimed in claim 2 is characterized in that, respectively has groove on described the second magnetic conductor.

4. inductor improved structure as claimed in claim 3 is characterized in that, described groove is stepped.

5. inductor improved structure as claimed in claim 1 is characterized in that, described the first magnetic conductor and described the second magnetic conductor are circular, and the surface of described the first magnetic conductor and described the second magnetic conductor is even surface.

6. inductor improved structure as claimed in claim 5 is characterized in that, respectively has groove on described the second magnetic conductor.

7. inductor improved structure as claimed in claim 6 is characterized in that, described groove is stepped.

8. an inductor improved structure is characterized in that, this inductor improved structure comprises:

Two iron cores, respectively this iron core has the first magnetic conductor, respectively these the first magnetic conductor two ends respectively are extended with the second magnetic conductor, respectively this second magnetic conductor is mutually vertical with described the first magnetic conductor, and has respectively end face, wherein said two iron core correspondences are set up, and are formed with air gap between the corresponding placement of described end face;

The coiling group comprises:

The first coiling group on the first magnetic conductor that is wrapped in one of them described iron core, has input and output on this first coiling group;

The second coiling group on the first magnetic conductor that is wrapped in another described iron core, has input and output on this second coiling group.

9. inductor improved structure as claimed in claim 8 is characterized in that, described the first magnetic conductor and described the second magnetic conductor are square, and the surface of described the first magnetic conductor and described the second magnetic conductor is even surface.

10. inductor improved structure as claimed in claim 9 is characterized in that, respectively has groove on described the second magnetic conductor.

11. inductor improved structure as claimed in claim 10 is characterized in that, described groove is stepped.

12. inductor improved structure as claimed in claim 8 is characterized in that, described the first magnetic conductor and described the second magnetic conductor are circular, and the surface of described the first magnetic conductor and described the second magnetic conductor is even surface.

13. inductor improved structure as claimed in claim 12 is characterized in that, respectively has groove on described the second magnetic conductor.

14. inductor improved structure as claimed in claim 13 is characterized in that, described groove is stepped.

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