Common mode choke inductor

Abstract

The common-mode choke inductor comprises a base, an iron core and a framework, at least three sets of limiting seats are arranged on the upper wall of the base, each limiting seat comprises supporting arms extending upwards from the two sides of the upper wall of the base, and a positioning groove with an opening in the upper end is defined between every two supporting arms; an inductance interval is arranged between every two adjacent limiting seats, a plurality of positioning columns and a plurality of electrode columns are arranged on the bottom wall of the base, a positioning groove is formed in the middle of the iron core, the lower portion of the iron core is installed on the penetrating groove, the framework comprises an upper support and a lower support, the lower support is arranged in the positioning groove and clamped on the supporting arm, and the upper support is connected with the lower support. The upper support and the lower support are clamped and fixed and arranged above the framework, a coil is arranged at the position, located in the inductance section, of the framework, and the end of the coil is connected with the electrode column. And the positioning columns and the electrode columns are mounted on the lower wall of the base, so that the inductor can be conveniently mounted on a PCB (Printed Circuit Board), meanwhile, the inductor can be conveniently mounted, and the disorder of lines is avoided.

Description

Technical Field

[0001] The utility model relates to the field of inductors, in particular to a common-mode choke inductance Background Art

[0002] An inductor is a component that can convert electrical energy into magnetic energy and store it. The structure of an inductor is similar to that of a transformer, but it has only one winding. An inductor has a certain inductance, and it only impedes the change of current. If the inductor is in a state without current passing through, when the circuit is turned on, it will try to impede the current from flowing through it; if the inductor is in a state with current passing through, when the circuit is turned off, it will try to maintain the current unchanged. An inductor is also called a choke, a reactor, or a dynamic reactor

[0003] When the existing inductor is installed on a PCB board, it generally uses welding feet and cables to fix the inductor. However, the method of using cable connection makes the circuit design messy and affects the circuit layout. At the same time, it is necessary to design separate welding feet to fix the inductor, and there are also many installation procedures (requiring alignment and welding), which affects the convenience of using the inductor

[0004] At the same time, the existing coils are generally single combinations. Therefore, in the actual winding design, the single winding has a relatively limited impedance to current. Therefore, the inductor series connection method is generally used to increase the inductance Summary of the Utility Model

[0005] The main purpose of the utility model is to propose a common-mode choke inductance, aiming to design a common-mode structure that can realize the installation of multiple windings, has a simple structure, is convenient to be installed on a PCB board, and effectively improves the inductance while improving the stability of the inductor

[0006] To achieve the above purpose, the utility model proposes a common-mode choke inductance, including

[0007] A base, at least three groups of limiting seats are provided on the upper wall of the base. The limiting seat includes support arms extending upward from both sides of the upper wall of the base, and a positioning groove with an opening at the upper end is formed between the two support arms

[0008] A through groove is recessed on the upper wall of the base, and the through groove runs through the base along the length direction of the base

[0009] An inductance interval is provided between two adjacent limiting seats. A plurality of positioning posts and a plurality of electrode posts are provided on the bottom wall of the base

[0010] An iron core, the iron core has a rectangular frame structure and extends along the length direction of the base. A positioning groove is provided in the middle of the iron core, and the lower part of the iron core is installed on the through groove

[0011] Skeleton, the skeleton includes an upper bracket and a lower bracket, the lower bracket is arranged in the positioning groove and clamped on the support arm, the upper bracket is clamped with the lower bracket and arranged above the skeleton, a coil is arranged at the position of the skeleton in the inductance area, and the end of the coil is connected to the electrode post.

[0012] In the actual design, through reasonable settings, the iron core, skeleton and coil are regarded as a single module. After the module is assembled, the module is installed on the base, and the iron core is clamped in the through groove, and at the same time the lower bracket is clamped at the inner wall position of the support arm, thus completing the assembly of the inductor;

[0013] And positioning posts and electrode posts are installed on the lower wall of the base, which not only facilitates the installation of the inductor on the PCB board, but also facilitates the installation of the inductor, avoiding the mess of the circuit. And through the setting of three groups of limiting grooves, the module can install at least two groups of coils at the same time, thus realizing the integration of multiple windings on the same structure and improving the integration of the inductor.

[0014] In the specific design, the two windings can have different inductance parameters or the same inductance parameters, and can be connected in series with each other or be independent of each other, thus improving the applicability of the product. Brief Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the present utility model with some structures hidden;

[0016] Figure 2 It is an exploded view of the present utility model;

[0017] Figure 3 It is a three-dimensional schematic diagram of the present utility model.

[0018] In the figure,

[0019] 1 is the base, 11 is the limiting seat, 11a is the support arm, 11b is the limiting groove, 11c is the inductance area,

[0020] 2 is the positioning groove,

[0021] 3 is the iron core, 30 is the through groove,

[0022] 4 is the skeleton, 41 is the upper bracket, 42 is the lower bracket,

[0023] 51 is the convex block, 52 is the groove,

[0024] 6 is the turn, 60 is the coil,

[0025] 71 is the positioning post, 72 is the electrode post,

[0026] 81 is the positioning pin, 82 is the pin groove,

[0027] 91 is the first half slot, and 92 is the second half slot. Detailed implementation mode

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] It should be noted that if there are directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...) involved in the embodiments of the present invention, then the directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, if there are descriptions involving "first" or "second" in the embodiments of the present invention, then the descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0031] As Figures 1 to 3 shown, a common-mode choke coil includes:

[0032] A base 1, at least three groups of limit seats 11 are provided on the upper wall of the base 1. The limit seats 11 include support arms 11a extending upward from both sides of the upper wall of the base 1. A positioning groove 2 with an opening at the upper end is formed between the two support arms 11a. A through groove 30 is recessed on the upper wall of the base 1 and is arranged along the length direction of the base 1;

[0033] An inductance interval 11c is provided between adjacent limit seats 11. A plurality of positioning posts 71 and a plurality of electrode posts 72 are provided on the bottom wall of the base 1;

[0034] A iron core 3, the iron core 3 has a rectangular frame structure and extends along the length direction of the base 1. A positioning groove 2 is provided in the middle of the iron core 3, and the lower part of the iron core 3 is installed on the through groove 30;

[0035] A skeleton 4, the skeleton 4 includes an upper bracket 41 and a lower bracket 42. The lower bracket 42 is arranged in the positioning groove 2 and clamped on the support arm. The upper bracket 41 is clamped with the lower bracket 42 and arranged above the skeleton 4. A coil 60 is arranged at the position of the skeleton 4 in the inductance interval 11c, and the end of the coil 60 is connected to the electrode post 72.

[0036] In the actual design, through reasonable settings, the iron core 3, the skeleton 4 and the coil 60 are used as a single module. After the module is assembled, the module is installed on the base 1, and the iron core 3 is clamped in the through groove 30. At the same time, the lower bracket 42 is clamped at the inner wall position of the support arm 11a, thus completing the assembly of the inductor.

[0037] And a positioning post 71 and an electrode post 72 are installed on the lower wall of the base 1, which not only facilitates the installation of the inductor on the PCB board, but also facilitates the installation of the inductor, avoiding the mess of the circuit. And through the setting of three groups of limiting grooves 11b, the module can install at least two groups of coils 60 at the same time, thus realizing the integration of multiple windings on the same structure and improving the integration of the inductor.

[0038] In the specific design, the two windings can have different inductance parameters or the same inductance parameters, and can be connected in series with each other or be independent of each other, thus improving the applicability of the product.

[0039] Specifically, the support arm 11a is arc-shaped, and a semi-circular limiting groove 11b is formed between the two support arms 11a. The lower bracket 42 is of a semi-circular structure, which facilitates the installation. At the same time, the circular inductor has better controllability and better versatility.

[0040] In the embodiment of the present invention, at least one group of support arms 11a is provided with a plurality of convex blocks 51 arranged at intervals, and the outer peripheral wall of the lower bracket 42 is provided with grooves 52 matching with the convex blocks 51, thus realizing the installation and positioning of the lower bracket 42. Preferably, high-temperature glue is used for bonding.

[0041] Specifically, at least three turns 6 arranged at intervals are provided at the inductance interval 11c of the skeleton 4, and at least two coils 60 arranged at intervals are provided on the turn 6, thus leading out the positive pole and the negative pole.

[0042] In the embodiment of the present invention, the base 1 is provided with four positioning posts 71, so that after the base 1 is clamped with the PCB board, the fulcrums are more uniform, reducing the problem of local force damage.

[0043] Specifically, the electrode posts 72 are installed on the base 1 through threaded holes. There are four electrode posts 72. When there are two sets of coils 60, there are four electrode posts 72. When there are three sets of coils 60, the number of electrode posts 72 can also be six, so as to meet different parameter requirements.

[0044] In the embodiment of the present invention, positioning pins 81 and pin slots are respectively provided on the opposite wall surfaces of the upper bracket 41 and the lower bracket 42. The positioning pins 81 extend into the pin slots 82, thereby realizing the mutual locking between the upper bracket 41 and the lower bracket 42.

[0045] Specifically, the upper wall of the lower bracket 42 is provided with a first half-slot 91, and the upper bracket 41 is provided with a second half-slot 92 that cooperates with the first half-slot. The first half-slot and the second half-slot enclose a chamber that fits the outer diameter of the upper part of the iron core 3.

[0046] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A common-mode choke inductor, characterized in that, Comprising: A base, on the upper wall of which there are provided at least three groups of limiting seats. Each limiting seat includes support arms extending upward from both sides of the upper wall of the base. A positioning groove with an opening at the upper end is formed between the two support arms. A through groove is recessed on the upper wall of the base, and the through groove runs through the base along the length direction of the base. An inductance region is provided between two adjacent limiting seats. A plurality of positioning posts and a plurality of electrode posts are provided on the bottom wall of the base. An iron core, which has a rectangular frame structure and extends along the length direction of the base. A positioning groove is provided in the middle of the iron core, and the lower part of the iron core is installed on the through groove. A bobbin, which includes an upper bracket and a lower bracket. The lower bracket is arranged in the positioning groove and is clamped on the support arms. The upper bracket and the lower bracket are clamped together and are arranged above the bobbin. A coil is provided at the position of the bobbin in the inductance region, and the end of the coil is connected to the electrode post.

2. The common mode choke inductor according to claim 1, wherein: The support arms are arc-shaped, and a semi-circular limiting groove is formed between the two support arms. The lower bracket has a semi-circular structure.

3. The common mode choke inductor according to claim 1, characterized in that: At least one group of support arms is provided with a plurality of convex blocks arranged at intervals, and a groove matching with the convex blocks is provided on the outer peripheral wall of the lower bracket.

4. The common-mode choke inductor according to claim 1, characterized in that: At least three turns arranged at intervals are provided at the position of the bobbin in the inductance region, and each turn is provided with at least two coils arranged at intervals.

5. The common mode choke inductor according to claim 1, wherein: Four positioning posts are provided on the base.

6. The common mode choke inductor according to claim 1, wherein: The electrode posts are installed on the base through threaded holes, and four electrode posts are provided.

7. The common-mode choke inductor according to claim 1, wherein: Positioning pins and pin slots are respectively provided on the opposite wall surfaces of the upper bracket and the lower bracket, and the positioning pins extend into the pin slots.

8. The common mode choke inductor according to claim 1, wherein: A first semi-groove is provided on the upper wall of the lower bracket, and a second semi-groove matching with the first semi-groove is provided on the upper bracket. The first semi-groove and the second semi-groove enclose a chamber adapted to the outer diameter of the upper part of the iron core.

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