CN217740324U - Inductor - Google Patents

Abstract

The application provides an inductor, including iron core, skeleton and at least one coil, the cross section of skeleton personally submits the ring form, and the skeleton includes first portion and second portion, and first portion and second portion can be connected in order to form the skeleton along the direction of the perpendicular cross-section of perpendicular to skeleton, and the coil passes first portion and/or second portion after around establishing on the skeleton, and the iron core is around establishing in the periphery side of skeleton and being located the coil. When the inductor is assembled, the coil can be sleeved on the first part and/or the second part of the framework, then the first part and the second part of the framework are assembled to form the framework, and finally the iron core is wound on the outer periphery of the framework and is positioned in the coil, so that the inductor is formed; the iron core is a complete whole, so that the magnetic conductivity is not influenced, the inductance of the inductor is not influenced, and the inductor has better performance.

Description

Inductor

Technical Field

The application relates to the technical field of electronic components, in particular to an inductor.

Background

An inductor is an element capable of converting electric energy into magnetic energy and storing the magnetic energy, and the inductor is one of the most important components of power electronic technology in almost all power supply circuits.

In the related art, the inductor is generally composed of a coil and a core, and the core passes through the hollow coil so as to make the coil generate a larger inductance and thus bear a larger current. In the related art, in order to assemble the iron core with the coil, a breaking structure is generally adopted, that is, the iron core needs to be divided into two parts firstly, and the coil penetrates into the iron core and then the iron core is bonded.

However, by adopting the technical scheme, after the iron core is cut and then bonded, an air gap is introduced into the thickness of the glue layer, so that the inductance value is greatly reduced, and the performance of the inductor is influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defects in the related art, the present application aims to provide an inductor, which does not need to divide an iron core, so as not to affect the inductance of the inductor, and is beneficial to the inductor to have better performance.

The application provides an inductor, including iron core, skeleton and at least one coil, the cross-section of skeleton is the ring form, the skeleton includes first portion and second portion, the perpendicular to can be followed to first portion and second portion the direction in the perpendicular cross-section of skeleton is connected in order to form the skeleton, the coil passes first portion and/or around establishing behind the second portion on the skeleton, the iron core is around establishing the periphery side of skeleton and being located in the coil.

The inductor as described above, optionally, the first and second portions are centrosymmetric with respect to an axis of the bobbin.

The inductor as described above, optionally, a first protrusion and a first groove are provided on a side of the first portion facing the second portion, the first protrusion is disposed at a first end of the first portion, and the first groove is disposed at a second end of the first portion;

a second protrusion and a second groove are arranged on the side surface of the second part facing the first part, the second groove is arranged at the first end of the second part, and the second protrusion is arranged at the second end of the second part;

the first bulges are connected in the second grooves in an inserting mode, and the second bulges are connected in the first grooves in an inserting mode, so that the first portions and the second portions are connected to form the framework.

The inductor as described above, optionally, the bobbin includes a body and flanges provided at both ends of the body, and the iron core is provided around an outer peripheral side of the body.

As for the inductor described above, optionally, the flange is provided with a toothing on the side facing away from the body.

The inductor optionally includes a plurality of turns of the core strip wound around the outer periphery of the framework, a starting end of the core strip is fixedly connected to the framework, and a tail end of the core strip is fixedly connected to the core strip of the next outer turn.

In the inductor, optionally, the starting end of the core strip is fixed to the outer periphery of the framework in an adhering manner;

or the starting end of the iron core strip is inserted between the first part and the second part;

and the tail end of the iron core strip is bonded or welded with the iron core strip of the secondary outer ring.

The inductor as described above, optionally, the coil is formed by winding a flat wire, and the flat wire includes an enameled copper wire, a film-covered copper wire, an enameled aluminum wire, or a film-covered aluminum wire.

The inductor as described above, optionally, the coil is a square coil, and the coil is vertically wound on the bobbin and the iron core.

The inductor optionally further comprises an insulating pad, the insulating pad is arranged on one side of the coil, and the insulating pad is connected with the coil in an adhesive mode.

The application provides an inductor, including iron core, skeleton and at least one coil, the cross section of skeleton is the ring form, and the skeleton includes first portion and second portion, and first portion and second portion can be connected in order to form the skeleton along the direction of the perpendicular cross section of perpendicular to skeleton, and the coil passes behind first portion and/or the second portion around establishing on the skeleton, and the iron core is around establishing in the periphery side of skeleton and being located the coil. When the inductor is assembled, the coil can be sleeved into the first part and/or the second part of the framework, then the first part and the second part of the framework are assembled to form the framework, and finally the iron core is wound on the outer periphery of the framework and is positioned in the coil, so that the inductor is formed; the iron core is a complete whole, so that the magnetic conductivity is not influenced, the inductance of the inductor is not influenced, and the inductor has better performance.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or related technologies of the present application, the drawings needed to be used in the description of the embodiments or related technologies are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a structure of an inductor in the related art;

fig. 2 is an exploded view of an inductor in the related art;

fig. 3 is a schematic diagram of an inductor according to an embodiment of the present application;

FIG. 4 is a simplified diagram of an inductor according to another embodiment of the present application;

FIG. 5 is an exploded view of FIG. 3;

FIG. 6 is an exploded view of a skeletal frame provided in accordance with an embodiment of the present application;

FIG. 7 is an enlarged view of a portion A of FIG. 6;

fig. 8 is a partially enlarged view of a portion B in fig. 6.

Reference numerals:

10-a core; 11-a first sub-core; 12-a second sub-core;

20-a coil;

30-an insulating pad;

100-iron core;

200-framework; 201-a body; 202-flange; 203-gear ring; 210-a first portion; 211 — a first protrusion; 212-a first groove; 220-a second portion;

300-a coil; 310-a first coil; 320-a second coil; 330-a third coil;

400-insulating pad.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments.

All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Inductors are typically constructed from a coil and a core that passes through the hollow coil to create more inductance in the coil and thus to withstand more current. Fig. 1 is a schematic view of a structure of an inductor in the related art;

fig. 2 is an exploded view of an inductor in the related art. Referring to fig. 1-2, in a related art, an inductor includes an iron core 10 and a coil 20, the iron core 10 has a circular cross section, and the coil 20 is wound around the iron core 10. An insulating pad 30 is also provided below the coil 20 to insulate the inductor from other components. In order to achieve the assembly between the core 10 and the coil 20, the core 10 of the present embodiment is divided into two parts, that is, the core 10 includes a first sub-core 11 and a second sub-core 12. During assembly, the coil 20 is firstly sleeved on the first sub-core 11 and the second sub-core 12 from the opening of the core 10, and then the first sub-core 11 and the second sub-core 12 are bonded together by using glue. After the glue is solidified, a glue layer is formed between the first sub-core 11 and the second sub-core 12, and an air gap is introduced into the thickness of the glue layer, so that the inductance of the inductor is greatly reduced (by about 30% -50%), and the performance of the inductor is affected.

In view of this, embodiments of the present application aim to provide an inductor, in which a skeleton of a dividing structure is arranged to replace an iron core in the related art, a coil is sleeved on the skeleton, and then the divided skeleton is assembled into a whole, the iron core can be integrally arranged outside the skeleton, so that the iron core is prevented from being divided, and therefore the inductance of the inductor is not affected, and the inductor has better performance.

The following detailed description of the embodiments of the present application will be provided in conjunction with the accompanying drawings to enable those skilled in the art to more fully understand the contents of the present application.

FIG. 3 is a simplified diagram of an inductor according to an embodiment of the present application; FIG. 4 is a simplified diagram of an inductor according to another embodiment of the present application; FIG. 5 is an exploded view of FIG. 3; fig. 6 is an exploded view of a skeletal frame provided in accordance with an embodiment of the present application.

Referring to fig. 3 to 6, the present embodiment provides an inductor, which includes an iron core 100, a bobbin 200, and at least one coil 300. The bobbin 200 is substantially hollow and cylindrical, and the cross section of the bobbin 200 is circular ring-shaped to provide a winding space for the coil 300. Specifically, as shown in fig. 5 and 6, the frame 200 is a split structure, and includes a first portion 210 and a second portion 220, the first portion 210 and the second portion 220 are symmetrically disposed, and the first portion 210 and the second portion 220 may be connected in a direction perpendicular to a vertical cross-section of the frame 200 to form the frame 200. The coil 300 is wound on the bobbin 200 after passing through the first portion 210 and/or the second portion 220, and the core 100 is wound on the outer circumference of the bobbin 200 and is located in the coil 300. The number of coils 300 in this embodiment can be set as desired, as shown in fig. 3, and in one possible implementation, the inductor includes one coil 300, and the inductor is a single-winding inductor; in another possible embodiment, as shown in fig. 4, the inductor comprises three coils, namely a first coil 310, a second coil 320 and a third coil 330, and the inductor is a three-phase common mode inductor.

In the present embodiment, during assembly, the coil 300 may be sleeved on the first portion 210 and/or the second portion 220 of the bobbin 200, the first portion 210 and the second portion 220 of the bobbin 200 are assembled to form the bobbin 200, and finally the iron core 100 is wound around the outer periphery of the bobbin 200 and the iron core 100 is located in the coil 300, so as to form the inductor; because the iron core 100 is a complete whole, the magnetic permeability is not influenced, so that the inductance of the inductor is not influenced, and the inductor has better performance.

In one possible implementation, the first portion 210 and the second portion 220 of the present embodiment are centrally symmetric with respect to the axis of the backbone 200. As shown in fig. 6, the straight line L is an axis of the skeleton 200, and the first portion 210 and the second portion 220 are in a central symmetry relationship, that is, the first portion 210 can be overlapped with the second portion 220 after rotating 180 ° around the straight line L; alternatively, the second portion 220 may be rotated 180 about the line L to coincide with the first portion 210. The first part 210 and the second part 220 are arranged in a centrosymmetric structure, so that the number of opened molds of the framework 200 can be reduced, and the framework 200 can be manufactured by only one mold.

FIG. 7 is an enlarged view of a portion A of FIG. 6; fig. 8 is a partially enlarged view of a portion B in fig. 6. Referring to fig. 7-8, further, in the present embodiment, a first protrusion 211 and a first groove 212 are disposed on a side surface of the first portion 210 facing the second portion 220, the first protrusion 211 is disposed at a first end of the first portion 210, and the first groove 212 is disposed at a second end of the first portion 210.

Correspondingly, the side of the second part 220 facing the first part 210 is provided with a second protrusion and a second recess, the second recess being provided at a first end of the second part 220 and the second protrusion being provided at a second end of the second part 220.

The first protrusion 211 is inserted into the second groove, and the second protrusion is inserted into the first groove 212, so that the first portion 210 and the second portion 220 are connected to form the frame 200. Optionally, the first protrusion 211 may be connected and fixed with the second groove by using a connection manner such as clamping, bonding, and the like; the second protrusion can be connected and fixed with the first groove 212 by adopting connection modes such as clamping, bonding and the like.

It should be noted that, in the present embodiment, the bobbin 200 is described as including two parts, but in other possible embodiments, the bobbin 200 may further include multiple parts, such as three parts, four parts, etc., the multiple parts may be assembled together to form the bobbin 200, and the method for assembling the core 100 and the coil 300 to the bobbin 200 is the same as that in the present embodiment, so that the above-mentioned effects of the present embodiment can also be achieved.

With reference to fig. 3 to 5, the frame 200 of the present embodiment includes a body 201 and flanges 202 disposed at two ends of the body 201 after being assembled into a whole, the body 201 and the flanges 202 at two ends form a space for installing the iron core 100 together, the iron core 100 is wound around the outer periphery of the body 201, and the flanges 202 at two ends can limit the iron core 100 to prevent the iron core 100 from falling off.

In this embodiment, the iron core 100 includes a plurality of turns of iron core strips wound around the outer periphery of the framework 200, the starting end of the iron core strip is fixedly connected to the framework 200, and the end of the iron core strip is fixedly connected to the iron core strip of the next outer ring. That is, the core 100 in this embodiment can be made by winding a strip-shaped core material around the outside of the body 201; the iron core material can be selected from amorphous, nanocrystalline, silicon steel sheet and other strip-shaped magnetic conductive materials. In this way, this embodiment can confirm the number of turns around establishing of iron core strip as required to make the inductance of iron core adjustable, can select suitable iron core number of turns as actual need, inductor overall structure's flexibility is better.

Optionally, in order to facilitate the winding of the iron core strip, in this embodiment, a gear ring 203 is disposed on a side of the flange 202 away from the body 201, and the gear ring 203 may be engaged with an external device, so as to drive the framework 200 to rotate by using the external device. When the inductor is assembled, only the initial section of the iron core strip needs to be fixed on the framework 200, and then the framework 200 is driven to rotate by using external equipment, so that the iron core strip is continuously wound on the body 201 of the framework 200. After winding, the end of the iron core strip is fixedly connected with the iron core strip of the next outer ring to form the iron core 100. The embodiment omits the processes of breaking and bonding the iron core, and can realize the winding of the iron core strip by using external equipment, thereby being beneficial to realizing automatic production.

Alternatively, the starting end of the core strip of the present embodiment may be fixed to the outer circumferential side of the frame 200 by bonding; alternatively, the starting end of the core strip may be inserted between the first portion 210 and the second portion 220, and the core strip is clamped by the assembly gap between the first portion 210 and the second portion 220, thereby preventing the core strip from falling off. The tail end of the iron core strip and the iron core strip of the secondary outer ring can be connected and fixed in a bonding or welding mode.

In one possible embodiment, the coil 300 of the present embodiment is formed by winding a flat wire, and the flat wire includes an enameled copper wire, a film-covered copper wire, an enameled aluminum wire, or a film-covered aluminum wire.

Optionally, in this embodiment, the coil 300 is a square coil, the square coil can be more attached to the bobbin 200 and the iron core 100, and the assembly gap is smaller, so that the material cost is reduced, and the overall size of the inductor is reduced. The coil 300 may be wound on the bobbin 200 and the core 100.

Further, the inductor of the present embodiment further includes an insulating pad 400, the insulating pad 400 is disposed at one side of the coil 300, and the insulating pad 400 is adhesively connected to the coil 300. The inductor can be insulated from other parts by arranging the insulating pad 400, and the lead-out wire of the inductor can penetrate through the insulating pad 400 and then be electrically connected with other parts, so that the inductor is connected into a circuit.

In summary, in the present embodiment, during assembly, the coil 300 may be sleeved on the first portion 210 and/or the second portion 220 of the bobbin 200, the first portion 210 and the second portion 220 of the bobbin 200 are assembled to form the bobbin 200, and finally the iron core 100 is wound around the outer periphery of the bobbin 200 and the iron core 100 is located in the coil 300, so as to form the inductor; because the iron core 100 is a complete whole, the magnetic permeability is not influenced, so that the inductance of the inductor is not influenced, and the inductor has better performance.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present application.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that, in the description of the present application, the terms "first" and "second" are used merely for convenience in describing different components, and are not to be construed as indicating or implying a sequential relationship, relative importance, or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

The embodiments or implementation manners in the present application are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments can be referred to each other.

In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this application, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. The utility model provides an inductor, its characterized in that includes iron core, skeleton and at least one coil, the cross section of skeleton is the ring form, the skeleton includes first portion and second portion, perpendicular to can be followed to first portion and second portion the direction in the vertical cross-section of skeleton is connected in order to form the skeleton, the coil passes first portion and/or around establishing behind the second portion on the skeleton, the iron core is around establishing the periphery side of skeleton and being located in the coil.

2. The inductor of claim 1, wherein the first and second portions are centrosymmetric with respect to an axis of the bobbin.

3. The inductor according to claim 2, wherein a first protrusion and a first groove are provided on a side of the first portion facing the second portion, the first protrusion is provided at a first end of the first portion, and the first groove is provided at a second end of the first portion;

a second protrusion and a second groove are arranged on the side surface of the second part facing the first part, the second groove is arranged at the first end of the second part, and the second protrusion is arranged at the second end of the second part;

the first protrusion is connected in the second groove in an inserted mode, and the second protrusion is connected in the first groove in an inserted mode, so that the first portion and the second portion are connected to form the framework.

4. The inductor according to any one of claims 1 to 3, wherein the bobbin includes a body and flanges provided at both ends of the body, and the core is provided around an outer peripheral side of the body.

5. An inductor as claimed in claim 4, characterized in that the side of the flange facing away from the body is provided with a toothing.

6. The inductor according to claim 4, wherein the iron core comprises a plurality of turns of iron core strips wound around the outer periphery of the framework, the starting ends of the iron core strips are fixedly connected with the framework, and the tail ends of the iron core strips are fixedly connected with the iron core strips of the second outer turn.

7. The inductor according to claim 6, wherein the starting end of the core strip is fixed to the outer circumferential side of the bobbin by bonding;

or the starting end of the iron core strip is inserted between the first part and the second part;

and the tail end of the iron core strip is bonded or welded with the iron core strip of the secondary outer ring.

8. The inductor according to claim 1, wherein the coil is wound by a flat wire, and the flat wire comprises an enameled copper wire, a film-covered copper wire, an enameled aluminum wire or a film-covered aluminum wire.

9. The inductor of claim 8, wherein the coil is a square coil, the coil being wound immediately around the bobbin and the core.

10. The inductor as claimed in claim 9, further comprising an insulating pad disposed on one side of the coil, the insulating pad being adhesively attached to the coil.

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