CN207199428U - Improved structure of inductor - Google Patents

Abstract

The utility model is an improved structure of an inductor, the inductor comprising a coil and an iron core, the coil is wound around the iron core, and one end of the coil has a first connection end, and the other end has a second connection end, and the characteristic is that: four corners of the iron core are respectively provided with a missing corner, through the setting of the missing corner, when the coil is wound around the iron core, the bending angle of the coil each time can be effectively reduced, and the stress on the inside of the iron core is further reduced, so that the attenuation of the inductance value of the inductor is reduced.

Description

Improved Structure of Inductors

technical field

The utility model relates to an inductor, in particular to an improved structure of the inductor which can reduce the stress generated by the coil of the inductor on the inside of the iron core and further reduce the attenuation of the inductance value of the inductor.

Background technique

An inductor is an electronic circuit component that generates an electromotive force due to a change in current in an electronic circuit, thereby resisting a change in current. If the inductor has no current flowing through it, the inductor can prevent the current from flowing through it; if the inductor has current flowing through it, it will maintain the current constant when the electronic circuit is disconnected.

With the development of inductors, there are various types of inductors at present. Among them, the magnetic permeability of ring inductors is related to the structure inside the iron core. The iron core can be sintered from ceramic materials, iron oxide or other non-magnetic materials. Therefore, the inside of the iron core is composed of many crystals, and non-magnetic insulating materials are added to prevent the iron core from becoming a whole piece of iron, which will generate huge eddy currents and affect the inductance effect. The freshly made iron core will have a relative magnetic permeability μ. When the copper wire is wound around the iron core, the coil will generate internal stress on the iron core. The internal stress will squeeze the iron core, and promote the crystallization and crystallization inside the iron core. The narrowing of the gap will affect the magnetic permeability of the iron core.

The same iron core has the same number of turns, but the thickness of the wound copper wires produces different stresses. The coils wound with thin copper wires have little stress, and the measured inductance tends to be close to the theoretical calculation value, while the coils wound with thick copper wires have little stress. Coils wound with copper wires require greater force, and the stress is relatively increased, while the measured inductance value is significantly reduced, so the greater the stress, the greater the decrease in magnetic permeability. To further illustrate, when the copper wire is bent, the greater the bending angle, the greater the stress required for winding, and the stress is transmitted to the iron core body through the bending angle. That is to say, due to the structure of the current inductor, there has always been a problem of large attenuation of the inductance value.

Please refer to FIGS. 1-4, which are perspective views, top views, cross-sectional views and implementation schematic diagrams of inductor structures in the prior art. It can be clearly seen from the figures that the inductor 1 includes a coil 11 and an annular iron core 12. The coil 11 is used to be wound on the annular iron core 12, and includes a first connecting end 13 and a second connecting end 14, however, when the coil 11 is wound on the annular iron core 12, since it is bent four times around a circle A bending angle of about 90 degrees is used to achieve the effect of a circle, and the required stress is relatively large, and the stress is transmitted to the inside of the iron core 12 through the bending angle, resulting in a large attenuation of the inductance value of the inductor 1 . question.

Therefore, how to solve the above-mentioned conventional problems and deficiencies is the direction that the inventors of the utility model and related manufacturers engaged in this industry eagerly want to study and improve.

Therefore, in view of the above shortcomings, the creator of the utility model designed this new patent after collecting relevant information, evaluating and considering it in many ways, and using years of experience accumulated in this industry, through continuous trial and modification.

Utility model content

The purpose of the utility model is to provide an improved inductor structure that can reduce the stress generated by the coil of the inductor on the inside of the iron core, and further reduce the attenuation of the inductance value of the inductor.

In order to achieve the above or other objectives, the utility model discloses an improved structure of an inductor, the inductor includes a coil and an iron core, the coil is wound around the iron core, and one end of the inductor has a first connection end, The other end has a second connection end, characterized in that:

The four corners of the iron core are respectively provided with a notch so that when the coil wraps around the iron core, the bending angle of each bending of the coil can be effectively reduced and the stress on the inside of the iron core can be further reduced.

Wherein, the iron core is an annular iron core.

Wherein, when the coil is wound around the iron core, the bending angle of each bending is 40 degrees to 50 degrees.

Wherein, when the coil is wound around the iron core, the bending angle of each bending is 45 degrees.

Wherein, since the four corners of the iron core of the utility model are respectively provided with a notch, with this structure, when the coil wraps around the iron core, the bending angle of each bending of the coil can be effectively reduced. For example, when the coil is wound around the iron core, the bending angle of each bending is 40 degrees to 50 degrees. Preferably, the bending angle of each bending is 45 degrees. In this way, the stress generated by the inductor coil on the inside of the iron core can be reduced, further reducing the inductance attenuation of the inductor.

Description of drawings

Figure 1: A perspective view of a prior art inductor;

Figure 2: is a top view of a prior art inductor;

Fig. 3: is the sectional view of prior art inductor;

Figure 4: A schematic diagram of the implementation of a prior art inductor;

Fig. 5: is the perspective view of a preferred embodiment according to the improved structure of the inductor of the present invention;

Fig. 6: is the top view according to the preferred embodiment of the improved structure of the inductor of the present invention;

Fig. 7: is the sectional view according to the preferred embodiment of the improved structure of the inductor of the present invention; and

Fig. 8 is a schematic diagram of implementation of a preferred embodiment of the improved structure of the inductor according to the present invention.

Detailed ways

In order to achieve the above-mentioned purpose and effect, the technical means and the structure adopted by the utility model are hereby illustrated in detail with respect to the preferred embodiments of the utility model. Its features and functions are as follows, so that it can be fully understood.

Please refer to FIGS. 5-8 , which are perspective views, top views, cross-sectional views and implementation schematic diagrams of preferred embodiments of the improved structure of the inductor according to the present invention. It can be clearly seen from the figure that the utility model is an improved inductor structure, which can reduce the stress generated by the coil 21 of the inductor 2 on the inside of the iron core 22, and further reduce the attenuation of the inductance value of the inductor 2. That is, the present invention can provide an inductor 2 with a relatively accurate inductance value. The inductor 2 of the present invention includes a coil 21 and an iron core 22 , the coil 21 is wound around the iron core 22 , and one end of the coil 21 has a first connecting end 23 , and the other end has a second connecting end 24 .

Wherein, the coil 21 can be, for example, a copper wire, and the outer surface of the copper wire is painted with a layer of insulating varnish. The iron core 22 can be sintered by ceramic materials, iron oxide or other non-magnetic materials. In this embodiment, the iron core 22 is an annular iron core 22. is also a feasible solution. The first connection end 23 and the second connection end 24 can be connected to two ends of an electronic circuit (not shown in the figure) to resist changes in current in the electronic circuit.

The main features of the improved structure of the utility model inductor are: the four corners of the iron core 22 are respectively provided with a missing corner 25, the so-called four corners of the iron core 22 are preset to 90 degrees, but due to the setting of the missing corner 25 , the four 90-degree angles become two obtuse angles respectively. With the arrangement of the notch 25 , when the coil 21 wraps around the iron core 22 , the bending angle of each bending of the coil 21 can be effectively reduced, further reducing the stress on the inside of the iron core 22 .

By means of the above-mentioned structure and composition design, the operation of the utility model is explained as follows: when the inductor 2 of the utility model is to be made, the coil 21 is wrapped around the iron core 22, because the utility model The four corners of the iron core 22 are respectively provided with missing corners 25. When the coil 21 is wound around the iron core 22, the bending angle of each bending is 40 degrees to 50 degrees. The bending angle is 45 degrees.

The principle is that when the coil 21 is wound around the iron core 22, the iron core 22 is bent eight times, and the average bending angle of each bend is 45 degrees. In this way, the stress generated by the coil 21 of the inductor 2 on the inside of the iron core 22 can be reduced, further reducing the attenuation of the inductance of the inductor 2 .

Therefore, please refer to all the accompanying drawings, when the utility model is used, compared with the conventional technology, there are the following advantages: the improved structure of the inductor of the utility model can reduce the stress generated by the coil 21 of the inductor 2 on the inside of the iron core 22 , further reducing the inductance attenuation of the inductor 2 .

However, the above description is only a preferred embodiment of the utility model, and does not limit the scope of the patent of the utility model. Therefore, all the simple modifications and equivalent structural changes made by using the specification and drawings of the utility model , all should be included in the scope of the patent of the present utility model in like manner, together give Chen Ming.

Claims (4)

1. An improved structure of an inductor, the inductor includes a coil and an iron core, the coil is wound around the iron core, and one end has a first connection end, and the other end has a second connection end, its Features: The four corners of the iron core are respectively provided with a notch so that when the coil wraps around the iron core, the bending angle of each bending of the coil can be effectively reduced and the stress on the inside of the iron core can be further reduced. 2. The improved inductor structure according to claim 1, wherein the iron core is a ring iron core. 3 . The improved structure of an inductor according to claim 1 , wherein when the coil is wound around the iron core, the bending angle of each bending is 40 degrees to 50 degrees. 4 . 4. The improved inductor structure as claimed in claim 1, wherein when the coil is wound around the iron core, the bending angle of each bending is 45 degrees.