Common mode inductor

Abstract

The utility model belongs to the technical field of magnetic components, and particularly relates to a common mode inductor which comprises an inductor body and a base, the inductor body comprises winding coils and a magnetic ring, a plurality of winding coils are wound on the magnetic ring, an insulation support and a supporting strip are arranged on the base, and the insulation support is arranged on the supporting strip. The insulating support comprises a positioning frame and a plurality of partition plates, the partition plates are arranged on the positioning frame, one side of each partition plate abuts against the inner side wall of the magnetic ring and is located between the adjacent winding coils, a positioning assembly is arranged between the positioning frame and the supporting strip, and the base is provided with a plurality of threading holes for pin ends of the winding coils to penetrate through.

Description

TECHNICAL FIELD

[0001] The utility model belongs to magnetic component technical field, concretely relates to a common mode inductor. BACKGROUND

[0002] The statements in this section merely provide background information related to the utility model and do not necessarily constitute the prior art.

[0003] Common mode choke, also called common mode choke, is often used in computer switch power supply to filter common mode electromagnetic interference signals, in the design of board card, common mode choke plays the role of EMI filter, and is used for inhibiting electromagnetic wave generated by high speed signal line to radiate emission.

[0004] The existing three-phase common mode inductor includes a base, a magnetic ring and three groups of winding coils, the magnetic ring is installed on the base, a plurality of winding coils are wound on the magnetic ring, and an insulating sheet is bonded in the magnetic ring to keep a safe distance between the winding coils.

[0005] However, the inventor finds that since the insulating sheet is directly bonded in the magnetic ring, the insulating sheet is easy to deviate when bonded in the magnetic ring, resulting in deviation of the magnetic ring and inconsistency of the distance between the winding coils on the magnetic ring, and the assembly is inconvenient and the assembly efficiency is low. SUMMARY

[0006] To solve the above problems, the utility model provides a common mode inductor.

[0007] According to some embodiments, the scheme of the utility model provides a common mode inductor, adopts the following technical scheme:

[0008] A common mode inductor includes an inductor body and a base, the inductor body includes winding coils and a magnetic ring, a plurality of groups of winding coils are wound on the magnetic ring, the base is provided with an insulating support and a support bar, the insulating support is arranged on the support bar, the insulating support includes a positioning frame and a plurality of partition plates, a plurality of partition plates are arranged on the positioning frame, one side of the partition plate abuts against the inner wall of the magnetic ring and is located between adjacent winding coils, a positioning assembly is arranged between the positioning frame and the support bar, and a plurality of threading holes are arranged on the base for the pin end of the winding coil to pass through.

[0009] Further, the positioning frame includes a plurality of extension parts and a connecting part, a plurality of partition plates are connected to the bottom of the connecting part, a plurality of extension parts are connected to the end of the connecting part, the extension part abuts against one end of the magnetic ring away from the base and extends to the outside of the magnetic ring.

[0010] Further, the positioning block is arranged at one end of the base close to the partition plate, and the supporting strip is provided with a positioning hole corresponding to the positioning block, and the positioning block is inserted into the positioning hole.

[0011] Further, the positioning assembly comprises an elastic clamping piece and a supporting leg, one end of the supporting leg is connected to the end of the positioning frame, the other end of the supporting leg is connected to the elastic clamping piece, the supporting strip is provided with a clamping hole, and the elastic clamping piece is inserted into the clamping hole and is hooked to the clamping hole.

[0012] Further, the elastic clamping piece is an elastic clamping hook, the through hole comprises a first clamping hole and a second clamping hole, the first clamping hole is arranged on the supporting strip, and the second clamping hole is arranged on one side wall of the first clamping hole; the elastic clamping hook is inserted into the first clamping hole and is hooked to the second clamping hole.

[0013] Further, a point gluing hole is arranged at the hole opening of the first clamping hole.

[0014] Further, a through hole is arranged on the inner wall of the threading hole.

[0015] Further, the partition plate comprises a first partition plate and a second partition plate, the second partition plate is connected to one side of the first partition plate, and the side surface of the second partition plate away from the first partition plate abuts against the inner side wall of the magnetic ring and is matched with the inner side wall of the magnetic ring.

[0016] Further, the supporting leg is provided with a reinforcing rib on one side.

[0017] Compared with the prior art, the beneficial effects of the present application are as follows:

[0018] The positioning frame and the partition plate are arranged, the partition plate isolates the winding coil, the positioning assembly is arranged between the positioning frame and the supporting strip, the magnetic ring is prevented from deviating, the inductance body is quickly fixed on the base, and the convenience and efficiency of assembly are improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings accompanying the specification constitute part of this application and illustrate one or more exemplary embodiments of the present application and are used to explain the present application.

[0020] Figure 1 It is a structural schematic view of the embodiment one of the present application.

[0021] Figure 2 It is an assembly schematic view of the embodiment one of the present application.

[0022] Figure 3This is a cross-sectional view of the base according to Embodiment 1 of this utility model;

[0023] Figure 4 This is an assembly diagram of Embodiment 2 of the present invention.

[0024] The components include: 1. Inductor body; 101. Winding coil; 102. Magnetic ring; 2. Base; 3. Insulating bracket; 301. Positioning frame; 3011. Connecting part; 3012. Extension part; 302. Partition plate; 4. Support bar; 5. Positioning assembly; 501. Support leg; 502. Elastic hook; 6. First locking hole; 7. Second locking hole; 8. Positioning block; 9. Positioning hole; 10. Wire hole; 11. Glue dispensing hole; 12. First partition plate; 13. Second partition plate; 14. Reinforcing rib; 15. Through hole. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] In this utility model, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various components or elements of this utility model and do not specifically refer to any component or element in this utility model. They should not be construed as limiting this utility model.

[0029] In this utility model, terms such as "fixed connection," "connected," and "joined" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be determined according to the specific circumstances, and should not be construed as a limitation of this utility model.

[0030] Example 1

[0031] Referring to Figure 1 A common mode inductor, comprising an inductor body 1 and a base 2, the inductor body 1 is arranged on the base 2. Specifically, the inductor body 1 comprises a magnetic ring 102 and three groups of winding coils 2, the three groups of winding coils 2 are sequentially wound on the magnetic ring 102. The base 2 is provided with an insulating support 3 and a plurality of support bars 4, the insulating support 3 is used for positioning the inductor body 1, the plurality of support bars 4 are circumferentially arranged along the base 2, the inductor body 1 is placed on the support bars 4, so that there is a gap between the inductor body 1 and the base 2 to play a heat dissipation role. Through the cooperation of the insulating support 3 and the support bars 4, the stability of the inductor body 1 on the base 2 is enhanced, so that the inductor body 1 is not easy to deviate on the base 2.

[0032] Referring to Figure 2 Specifically, the insulating support 3 comprises a positioning frame 301 and a plurality of partition plates 302, the partition plates 302 are arranged on the positioning frame 301, in this embodiment, the number of the partition plates 302 is three, the three partition plates 302 are connected to the bottom of the positioning frame 301, and the three partition plates 302 are arranged perpendicularly to the positioning frame 301, forming three spaces for accommodating the winding coils 2. The three partition plates 302 are located inside the magnetic ring 102, one side surface of the partition plate 302 abuts against the inner side wall of the magnetic ring 102, and is located between the adjacent two groups of winding coils 2, so as to play a role of separating the winding coils 2. In addition, the end of the positioning frame 301 is provided with a positioning assembly 5 for connecting the positioning frame to the base 2, so that the magnetic ring is fixed on the base 2.

[0033] In this embodiment, the positioning frame 301 comprises a connecting portion 3011 and a plurality of extension portions 3012, wherein the number of the connecting portion 3011 is three, one end of the three connecting portions 3011 is connected to form a Y shape, each extension portion 3012 is connected to the other end of the corresponding connecting portion 3011, the bottom of the extension portion 3012 abuts against one end of the magnetic ring 102 away from the base 2, and the end of the extension portion 3012 away from the connecting portion 3011 extends out of the magnetic ring 102.

[0034] Referring to Figure 2 and Figure 3The positioning assembly 5 comprises a supporting leg 501 and an elastic clamping piece, in the embodiment, the number of the supporting leg 501 corresponds to the supporting strip 4, one end of the supporting leg 501 is connected to the end of the extending part 3012, and the other end is connected with the elastic clamping piece. Preferably, the elastic clamping piece is an elastic clamping hook 502, the supporting strip 4 is provided with a clamping hole, the clamping hole comprises a first clamping hole 6 and a second clamping hole 7, the first clamping hole 6 is arranged on the side of the supporting strip 4 away from the base 2, and the second clamping hole 7 is arranged on a hole wall of the first clamping hole 6. During installation, the supporting leg 501 is pressed, the elastic clamping hook 502 is inserted into the first clamping hole 6, when the elastic clamping hook 502 is aligned with the second clamping hole 7, the elastic clamping hook 502 is hooked with the corresponding second clamping hole 7 under the action of the elastic restoring force, and at this time, the end of the supporting leg 501 away from the positioning frame 301 abuts against the supporting strip 4. In addition, in order to enhance the stability of the supporting leg 501, a reinforcing rib 15 is arranged on the side surface of the supporting leg 501 facing the magnetic ring 102, and the reinforcing rib 15 is arranged along the height of the supporting leg 501.

[0035] Meanwhile, the bottom of the partition plate 302 is provided with a positioning block 8, and correspondingly, the side of the supporting strip 4 away from the base 2 is provided with a positioning hole 9, the positioning hole 9 is located inside the magnetic ring 102, and the positioning block 8 is inserted and matched with the corresponding positioning hole 9.

[0036] The base 2 is provided with a threading hole 10 corresponding to the lead end, and a through hole 15 is arranged on the inner side wall of the threading hole 10. Meanwhile, a dispensing hole 11 is arranged at the hole opening of the first clamping hole 6, and the dispensing hole 11 and the through hole 15 can be used for dispensing, so that the elastic clamping hook 502 and the lead end are fixed by dispensing, and the contact area of the elastic clamping hook 502 and the lead end with the glue is increased.

[0037] Embodiment 2

[0038] Referring to Figure 4 Different from the embodiment 1, the partition plate 302 comprises a first partition plate 12 and a second partition plate 13, the second partition plate 13 is connected to one end of the first partition plate 12 close to the magnetic ring 102, the second partition plate 13 is an arc-shaped plate, and the curvature of the second partition plate 13 matches the inner side wall of the magnetic ring 102, so that the contact area between the second partition plate 13 and the magnetic ring 102 is increased, and the stability of the inductor body 1 on the base 2 is enhanced.

[0039] The utility model discloses a supporting strip 4, insulating support 3 and positioning assembly 5 are set up, and insulating support 3 includes positioning frame 301 and partition plate 302, and partition plate 302 separates winding coil 101, and positioning frame 301 sets up on inductor body 1, and supporting strip 4 supports inductor body 1, and is fixed with positioning frame 301 through positioning assembly 5, and then makes inductor body 1 fast and stable on base 2, improves assembly efficiency and the stability of inductor body 1 on base 2, and reduces inductor body 1 deviation.

[0040] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0041] Although the specific embodiments of the present application have been described in connection with the accompanying drawings, the description is not intended to limit the scope of the present application, and those skilled in the art should understand that various modifications or changes can be made to the technical solutions of the present application without creative labor and still fall within the protection scope of the present application.

Claims

1. Common mode inductor comprising an inductive body (1) and a base (2), characterized in that, The inductance body (1) comprises winding coils (101) and a magnetic ring (102), a plurality of groups of winding coils (101) are wound on the magnetic ring (102), the base (2) is provided with an insulating support (3) and a support strip (4), the insulating support (3) is arranged on the support strip (4), the insulating support (3) comprises a positioning frame (301) and a plurality of partition plates (302), a plurality of partition plates (302) are arranged on the positioning frame (301), one side of the partition plate (302) abuts against the inner side wall of the magnetic ring (102) and is located between adjacent winding coils (101), a positioning assembly (5) is arranged between the positioning frame (301) and the support strip (4), and a plurality of threading holes (10) are arranged on the base (2) for the lead end of the winding coil (101) to pass through.

2. A common mode inductor as defined in claim 1, wherein The positioning frame (301) comprises a plurality of extension portions (3012) and a connecting portion (3011), a plurality of partition plates (302) are connected to the bottom of the connecting portion (3011), a plurality of extension portions (3012) are connected to the end of the connecting portion (3011), and the extension portion (3012) abuts against one end of the magnetic ring (102) away from the base (2) and extends to the outside of the magnetic ring (102).

3. A common mode inductor as defined in claim 1, wherein The partition plate (302) is provided with a positioning block (8) at one end close to the base (2), the support strip (4) is provided with a positioning hole (9) corresponding to the positioning block (8), and the positioning block (8) and the positioning hole (9) are inserted and matched.

4. A common mode inductor as defined in claim 1, wherein The positioning assembly (5) comprises an elastic clamping piece and a supporting leg (501), one end of the supporting leg (501) is connected to the end of the positioning frame (301), the other end of the supporting leg is connected with the elastic clamping piece, the support strip (4) is provided with a clamping hole, and the elastic clamping piece extends into the clamping hole and is hooked and matched with the clamping hole.

5. A common mode inductor as claimed in claim 4, wherein The elastic clamping piece is an elastic clamping hook (502), the inner side wall of the threading hole (10) is provided with a through hole (15), the through hole (15) comprises a first clamping hole (6) and a second clamping hole (7), the first clamping hole (6) is arranged on the support strip (4), the second clamping hole (7) is arranged on one side wall of the first clamping hole (6), and the elastic clamping hook (502) extends into the first clamping hole (6) and is hooked and matched with the second clamping hole (7).

6. A common mode inductor as claimed in claim 5, wherein A point gluing hole (11) is arranged at the aperture of the first clamping hole (6).

7. A common mode inductor as defined in claim 1, wherein The partition plate (302) comprises a first partition plate (12) and a second partition plate (13), the second partition plate (13) (302) is connected to one side of the first partition plate (12), the surface of the second partition plate (13) away from the first partition plate (12) abuts against the inner side wall of the magnetic ring (102) and is matched with the inner side wall of the magnetic ring (102).

8. A common mode inductor as defined in claim 4, wherein, One side of the supporting leg (501) is provided with a reinforcing rib (14).

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