CN216311564U - Inductor, tuning circuit and electronic equipment - Google Patents

Abstract

The utility model discloses an inductor, a tuning circuit and electronic equipment, comprising a magnet, a terminal and a coil group; the coil group is arranged inside the magnet, and the terminal is arranged on the magnet in a penetrating way; the coil group comprises at least two groups of coils which are wound in parallel; the head end and the tail end of each group of coils are respectively connected with one terminal. The utility model can meet the inductance requirement of two or more paths by arranging at least two groups of coils in parallel winding in the magnet and matching with the terminals arranged on the magnet in a penetrating way, and can save the winding space due to the close parallel winding between the coils under the condition of controlling the cost, thereby the inductor can be made small and thin, the development trend is met, the structure is simple, the assembly is easy, and the two coils are in close contact in the double-wire parallel winding way, thereby the integral structural strength of the coil group is enhanced, and the deformation of the coil group and the like during the magnet pressing are effectively avoided.

Description

Inductor, tuning circuit and electronic equipment

Technical Field

The present invention relates to the field of electronic device technologies, and in particular, to an inductor, a tuning circuit, and an electronic device.

Background

With the continuous development and evolution of the technology, various portable electronic terminal products are rapidly developed, the requirements on components used on the portable electronic terminal products are higher and higher, an inductor is one of important components, and the requirements on the inductor are correspondingly increased continuously.

An Inductor (Inductor, also called a choke or a reactor) is a component capable of converting electric energy into magnetic energy and then storing the magnetic energy, and mainly functions to isolate and filter alternating current signals or form a resonant circuit with a capacitor, a resistor and the like. Existing inductors are divided into plug-in inductors and patch inductors; the chip inductor is connected with the circuit board in a chip mode.

At present, double-circuit or multi-circuit inductance is needed to be used in a plurality of circuits, the traditional method is to directly adopt two or more independent chip inductors, although the double-circuit or multi-circuit inductance requirement can be met, the defects of large integral volume, high loss and high cost of elements exist, and the trend of miniaturization, high power and integration of the electronic terminal products under the current situation is not met.

Therefore, there is a need for improvements in the prior art.

The above information is given as background information only to aid in understanding the present disclosure, and no determination or admission is made as to whether any of the above is available as prior art against the present disclosure.

SUMMERY OF THE UTILITY MODEL

The utility model provides an inductor, a tuning circuit and electronic equipment, which aim to overcome the defect that a double-path or multi-path inductor in the prior art has a large integral volume and cannot meet the small and thin requirements.

In order to achieve the above purpose, the present invention provides the following technical solutions:

in a first aspect, an embodiment of the present invention provides an inductor, including a magnet, a terminal, and a coil assembly; wherein,

the coil group is arranged inside the magnet, and the terminal is arranged on the magnet in a penetrating way;

the coil group comprises at least two groups of coils which are wound in parallel;

the head end and the tail end of each group of coils are respectively connected with one terminal.

Further, in the inductor, the magnet is press-molded from a magnetic material at the periphery of the coil assembly.

Further, in the inductor, the magnetic material is metal soft magnetic powder or ferrite particles.

Further, in the inductor, one end of the terminal located inside the magnet is connected to a head end or a tail end of the coil, and one end of the terminal located outside the magnet is bent to serve as a bonding pad.

Further, in the inductor, one end of the terminal located outside the magnet is bent along the shape of the magnet to form the pad.

Furthermore, in the inductor, a recess corresponding to the pad is formed in the magnet and used for accommodating the pad.

Further, in the inductor, the coil is formed by winding a copper wire, and the head end and the tail end are connected with the terminal through spot welding.

Further, in the inductor, the magnet may be any one of a magnetic core and an iron core.

Further, in the inductor, the number of turns of the coil in each of the at least two sets of coils is the same.

Further, in the inductor, a T-shaped magnetic core is further included;

the coil group is wound on the T-shaped magnetic core;

the T-shaped magnetic core is embedded in the magnet.

In a second aspect, an embodiment of the present invention provides a tuning circuit, including an inductor as described in the first aspect.

In a third aspect, an embodiment of the present invention provides an electronic device, including the tuning circuit according to the second aspect.

Compared with the prior art, the embodiment of the utility model has the following beneficial effects:

according to the inductor, the tuning circuit and the electronic equipment provided by the embodiment of the utility model, at least two groups of coils are arranged inside the magnet in a parallel winding manner and are matched with the terminals arranged on the magnet in a penetrating manner, so that the requirement of double-path or multi-path inductance can be met, and the winding space can be saved due to the close parallel winding between the coils under the condition of controlling the cost, so that the inductor can be made small and thin, the current development trend is met, the structure is simple, the assembly is easy, the two coils are in close contact in the double-line parallel winding manner, the integral structural strength of the coil group is enhanced, and the coil group is effectively prevented from being deformed when the magnet is pressed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural top view of an inductor (two sets of coils) according to an embodiment of the present invention;

fig. 2 is a schematic bottom view of an inductor (two sets of coils) according to an embodiment of the present invention;

fig. 3 is a schematic top view of an inductor (two sets of coils) with an unbent terminal according to an embodiment of the present invention;

FIG. 4 is a schematic top view of a structure of two sets of coils connected to terminals according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a top view of an inductor (three sets of coils) according to an embodiment of the present invention;

FIG. 6 is a bottom view of an inductor (three sets of coils) according to an embodiment of the present invention;

FIG. 7 is a schematic top view of a structure of three sets of coils connected to terminals according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a side view of an inductor according to an embodiment of the present invention;

FIG. 9 is a schematic cross-sectional view of an inductor with a T-shaped core according to an embodiment of the present invention;

fig. 10 is a schematic top view of a structure in which three groups of coils are wound on a T-shaped core according to an embodiment of the present invention.

Reference numerals:

magnet 1, terminal 2, coil 3, T type magnetic core 4, ripples point 5, logical groove 6.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the referred devices or elements must have the specific orientations, be configured to operate in the specific orientations, and thus are not to be construed as limitations of the present invention.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

Example one

In view of the above-mentioned drawbacks of the conventional dual-path or multi-path inductors, the applicant of the present invention is based on practical experience and professional knowledge that is abundant over many years in the design and manufacture of such products, and is engaged in the application of theory to actively make research and innovation, so as to hopefully create a technology capable of solving the drawbacks of the prior art, so that the dual-path or multi-path inductor has higher practicability. After continuous research and design and repeated trial production and improvement, the utility model with practical value is finally created.

Referring to fig. 1-10, an embodiment of the utility model provides an inductor, which includes a magnet 1, a terminal 2, and a coil assembly; wherein,

the coil group is arranged inside the magnet 1, and the terminal 2 is arranged on the magnet 1 in a penetrating way;

the coil group comprises at least two groups of coils 3 which are wound in parallel;

the head end and the tail end of each group of the coils 3 are respectively connected with one terminal 2.

It should be noted that the inductor provided in this embodiment is a miniaturized chip inductor, which has a small volume, can be Mounted at high density, and is convenient for SMT (Surface Mounted Technology) process production. In addition, the inductor is of a fully-closed structure, has a good magnetic shielding effect, can effectively reduce electromagnetic interference, can avoid noise due to the fact that the magnet 1 and the coil assembly are compact, and has a higher inductance value and a smaller leakage inductance.

The specific number of the coil 3 sets is determined according to actual requirements, if two-way inductance is needed, the coil 3 sets are two groups, and if three-way inductance is needed, the coil 3 sets are three groups, the embodiment is exemplified by two groups and three groups of the coil 3, but it should be understood that no matter how many the coil 3 sets are, the coils are tightly wound in parallel, so that the space utilization rate can be greatly improved, and the winding space can be saved.

In the present embodiment, the magnet 1 is press-molded from a magnetic material at the periphery of the coil assembly.

It should be noted that, in order to ensure the tightness of the magnet 1 and the coil assembly, the present embodiment is designed to form the magnet 1 on the periphery of the coil assembly by pressing and molding a magnetic material. Specifically, the coil assembly is placed in a mold, then a magnetic material is filled in the mold, and then pressing is carried out.

In this embodiment, the magnetic material may be selected from different materials, such as metal soft magnetic powder or ferrite particles, according to the specific type of the inductor.

Specifically, when the inductor is used as a power inductor, the magnetic material is preferably metal soft magnetic powder, and the metal soft magnetic powder can bear higher pulse current; when the inductor is used as a common mode inductor, the magnetic material is preferably ferrite particles, which is advantageous for adjusting the high frequency impedance.

In this embodiment, one end of the terminal 2 located in the magnet 1 is connected to the head end or the tail end of the coil 3, and the terminal 2 located in the magnet 1 is convexly provided with a wave point 5 to enhance the bonding strength with the magnet 1; one end of the terminal 2, which is positioned outside the magnet 1, is bent to serve as a bonding pad, and a through groove 6 can be formed in the bent part of the terminal 2, so that stress generated when the terminal 2 is bent is reduced, and the terminal 2 is effectively prevented from cracking when being bent.

Preferably, in view of the problem of the appearance, the terminal 2 needs to be bent along the appearance of the magnet 1, that is, one end of the terminal 2 located outside the magnet 1 is bent along the shape of the magnet 1.

In addition, in order to prevent the bent terminal 2 from protruding out of the magnet 1, in this embodiment, a recessed portion for accommodating the pad is formed in the magnet 1 at a position corresponding to the pad, so that the overall appearance is improved.

In this embodiment, coil 3 adopts the copper wire coiling to form, and head end and tail end through spot welding with terminal 2 is connected.

The magnet 1 is any one of soft magnetic materials such as a magnetic core and an iron core, and can be selected randomly according to requirements.

In the present embodiment, the number of turns of the coil 3 in each of the at least two sets of coils 3 is the same. For example, when the coils 3 are provided in two groups, the turn ratio of the two groups is 1: 1, and when the coils 3 are arranged in three groups, the turn ratio of the three groups is 1: 1: 1.

in this embodiment, the inductor further comprises a T-shaped magnetic core 4;

the coil group is wound on the T-shaped magnetic core 4;

the T-shaped magnetic core 4 is embedded in the magnet 1.

It should be noted that the inductor having the T-shaped core 4 is another form of the inductor in the present embodiment, the T-shaped core 4 and the magnet 1 substantially perform the same function, but the T-shaped core 4 also has a function of facilitating the winding of the coil assembly. It can be considered that this form of the T-shaped core 4 and the magnet 1 is equivalent to that of the single magnet 1 as a whole. The magnet 1 is made of magnetic materials and is fixedly connected with the T-shaped magnetic core 4 in a pressing forming mode. In this case, the terminal 2 may be inserted into the magnet 1 or the T-shaped core 4.

Although the terms magnet, terminal, coil, T-core, etc. are used more often in this embodiment, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

According to the inductor provided by the embodiment of the utility model, at least two groups of coils are arranged inside the magnet in a parallel winding manner and are matched with the terminals 2 arranged on the magnet in a penetrating manner, so that the requirement of double-path or multi-path inductance can be met, and the winding space can be saved due to the close parallel winding between the coils under the condition of controlling the cost, so that the inductor can be made small and thin, the current development trend is met, the structure is simple, the assembly is easy, in addition, the two coils are in close contact in the double-line parallel winding manner, the integral structure strength of the coil group is enhanced, the coil group is effectively prevented from deforming and the like when the magnet is pressed.

Example two

An embodiment of the present invention provides a tuning circuit, where the tuning circuit includes the inductor according to the first embodiment.

According to the tuning circuit provided by the embodiment of the utility model, at least two groups of coils in the inductor are arranged inside the magnet in a parallel winding manner and are matched with the terminal 2 arranged on the magnet in a penetrating manner, so that the requirement of double-path or multi-path inductance can be met, and the winding space can be saved due to the close parallel winding between the coils under the condition of controlling the cost, so that the inductor can be made small and thin, the current development trend is met, the structure is simple, the assembly is easy, the two coils are in close contact in the double-line parallel winding manner, the integral structural strength of the coil group is enhanced, and the phenomenon that the coil group deforms when the magnet is pressed is effectively avoided.

EXAMPLE III

An embodiment of the present invention provides an electronic device, which includes the tuning circuit according to the second embodiment.

It should be noted that the electronic device includes a circuit board, and the tuning circuit is disposed on the circuit board.

Illustratively, the electronic device may be, for example, a laptop, a tablet, a smartphone, a smartwatch, or the like.

According to the electronic equipment provided by the embodiment of the utility model, at least two groups of coils in the inductor are arranged inside the magnet in a parallel winding manner and are matched with the terminals 2 arranged on the magnet in a penetrating manner, so that the requirement of double-path or multi-path inductance can be met, and the winding space can be saved due to the close parallel winding between the coils under the condition of controlling the cost, so that the inductor can be made small and thin, the current development trend is met, the structure is simple, the assembly is easy, the two coils are in close contact in the double-line parallel winding manner, the integral structural strength of the coil group is enhanced, and the coil group is effectively prevented from being deformed when the magnet is pressed.

The foregoing description of the embodiments has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, but, where applicable, are interchangeable and can be used in a selected embodiment, even if not specifically shown or described. The same elements or features may also vary in many respects. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.

Example embodiments are provided so that this disclosure will be thorough and will fully convey the scope to those skilled in the art. Numerous details are set forth, such as examples of specific parts, devices, and methods, in order to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms and that neither should be construed to limit the scope of the disclosure. In certain example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises" and "comprising" are intended to be inclusive and therefore specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order discussed and illustrated, unless explicitly indicated as an order of performance. It should also be understood that additional or alternative steps may be employed.

When an element or layer is referred to as being "on" … … "," engaged with "… …", "connected to" or "coupled to" another element or layer, it can be directly on, engaged with, connected to or coupled to the other element or layer, or intervening elements or layers may also be present. In contrast, when an element or layer is referred to as being "directly on … …," "directly engaged with … …," "directly connected to" or "directly coupled to" another element or layer, there may be no intervening elements or layers present. Other words used to describe the relationship of elements should be interpreted in a similar manner (e.g., "between … …" and "directly between … …", "adjacent" and "directly adjacent", etc.). As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region or section from another element, component, region or section. Unless clearly indicated by the context, use of terms such as the terms "first," "second," and other numerical values herein does not imply a sequence or order. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

Spatially relative terms, such as "inner," "outer," "below," "… …," "lower," "above," "upper," and the like, may be used herein for ease of description to describe a relationship between one element or feature and one or more other elements or features as illustrated in the figures. Spatially relative terms may be intended to encompass different orientations of the device in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the example term "below … …" can encompass both an orientation of facing upward and downward. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted.

Claims (10)

1. An inductor, characterized by comprising a magnet (1), a terminal (2) and a coil assembly; wherein,

the coil group is arranged inside the magnet (1), and the terminal (2) is arranged on the magnet (1) in a penetrating way;

the coil group comprises at least two groups of coils (3) which are wound in parallel;

the head end and the tail end of each group of coils (3) are respectively connected with one terminal (2).

2. An inductor according to claim 1, characterized in that the magnet (1) is press-formed of a magnetic material at the periphery of the coil assembly.

3. The inductor according to claim 2, wherein the magnetic material is a metallic soft magnetic powder or ferrite particles.

4. An inductor according to claim 1, characterized in that the end of the terminal (2) located inside the magnet (1) is connected to the head or tail end of the coil (3), and the end of the terminal (2) located outside the magnet (1) is bent as a pad.

5. The inductor according to claim 4, characterized in that one end of the terminal (2) located outside the magnet (1) is bent along the shape of the magnet (1) to form the pad; and a concave part for accommodating the bonding pad is arranged on the magnet (1) corresponding to the bonding pad.

6. The inductor according to claim 1, wherein the magnet (1) is any one of a magnetic core and an iron core.

7. An inductor as claimed in claim 1, characterized in that the number of turns of the coil (3) of each of the at least two sets of coils (3) is the same.

8. An inductor according to claim 1, characterized by further comprising a T-shaped magnetic core (4);

the coil group is wound on the T-shaped magnetic core (4);

the T-shaped magnetic core (4) is embedded in the magnet (1).

9. A tuning circuit comprising an inductor according to any one of claims 1-8.

10. An electronic device comprising the tuning circuit of claim 9.

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