Three-phase common-mode inductor

Abstract

The utility model belongs to the technical field of common-mode inductors, and particularly relates to a three-phase common-mode inductor which comprises a base and an inductor body arranged on the base, the inductor body comprises a magnetic core and three groups of winding coils, the three groups of winding coils are wound on the magnetic core, and the base is provided with an insulating support used for isolating the winding coils. The insulating support comprises a first adjusting block and a second adjusting block, the second adjusting block is arranged on the base, the first adjusting block is arranged on the second adjusting block in a sleeving mode, the second adjusting block is connected with the first adjusting block in a sliding mode, and a locking assembly used for locking and unlocking is arranged between the insulating support and the magnetic core.

Description

Technical Field

[0001] The utility model belongs to the technical field of common-mode inductors, and in particular relates to a three-phase common-mode inductor. Background Art

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

[0003] Common mode inductors (CMCs), also known as common mode chokes, are commonly used in computer switching power supplies to filter common-mode electromagnetic interference signals. In board design, CMCCs act as EMI filters, suppressing the outward radiation of electromagnetic waves generated by high-speed signal lines.

[0004] When assembling existing three-phase common-mode inductors, the magnetic core needs to be fixed on a plastic plate base. An insulating bracket is provided on the plastic plate base to isolate the winding coils and prevent different winding coils from contacting and interfering with each other.

[0005] However, the inventors found that during the assembly process of the above-mentioned three-phase common-mode inductor, when multiple magnetic cores are stacked together to wind the coils, the thickness of the magnetic cores increases, while the height of the insulating bracket is single and can only match the corresponding magnetic core thickness. It is difficult to adjust according to the different thicknesses of the magnetic cores, resulting in material waste. Summary of the Invention

[0006] In order to solve the above problems, the utility model proposes a three-phase common-mode inductor.

[0007] According to some embodiments, the present invention provides a three-phase common-mode inductor, which adopts the following technical solutions:

[0008] A three-phase common-mode inductor comprises a base, an inductor body arranged on the base, the inductor body comprising a magnetic core and three groups of winding coils, the three groups of winding coils being wound on the magnetic core, the base being provided with an insulating bracket for isolating the winding coils, the insulating bracket comprising a first adjustment block and a second adjustment block, the second adjustment block being arranged on the base, the first adjustment block being sleeved on the second adjustment block, the second adjustment block being connected to the first adjustment block in an up-and-down sliding manner, and a locking assembly for locking and unlocking being provided between the insulating bracket and the magnetic core.

[0009] Furthermore, the insulating bracket also includes a plurality of isolation components, which are circumferentially arranged on the side walls of the first adjustment block, and each group of the isolation components is located between two adjacent groups of the winding coils, and the end of the isolation component away from the first adjustment block contacts the inner surface of the magnetic core.

[0010] Furthermore, a receiving groove is provided on the second adjustment block, a first elastic member is provided in the receiving groove, and two ends of the first elastic member are respectively connected to the first adjustment block and the bottom of the receiving groove.

[0011] Furthermore, the isolation assembly includes a first isolation block and a second isolation block, the first isolation block is connected to the first adjustment block, the second isolation block is connected to the side wall of the second adjustment block, the first isolation block is provided with an isolation groove, the isolation groove is through-set and communicated with the interior of the first adjustment block, the first isolation block is located in the isolation block,

[0012] In the isolation groove, the first isolation block is slidably connected to the isolation groove.

[0013] Furthermore, the locking assembly includes a locking block and a second elastic member, a locking hole is provided at one end of the first isolation block away from the base, the second elastic member is located in the locking hole, and the two ends of the second elastic member are respectively connected to the locking block and the two opposite surfaces of the bottom of the locking hole. Under the action of the elastic restoring force of the second elastic member, the locking block extends out of the locking hole and contacts the surface of the magnetic core away from the base.

[0014] Furthermore, an arc surface is provided on one end of the locking block away from the second elastic member.

[0015] Furthermore, a plurality of first limiting blocks are circumferentially arranged on the base, and the plurality of first limiting blocks are used to limit the positions of the winding coils.

[0016] Furthermore, the first limiting block is provided with a second limiting block for supporting the magnetic core.

[0017] Furthermore, the base is provided with a plurality of through holes for the ends of the winding coil to pass through, and the through holes correspond to the ends of the winding coil one by one.

[0018] Furthermore, one end of the first isolation block away from the first adjustment block and one end of the second isolation block away from the second adjustment block are in contact with the inner surface of the magnetic core.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The utility model discloses a base, an inductor body and an insulating bracket. The insulating bracket includes an isolation component and a height adjustment component. A locking component for locking and unlocking is provided between the height adjustment component and the magnetic core. The height adjustment component includes a first adjustment block and a second adjustment block. The first adjustment block and the second adjustment block are connected by sliding up and down. At the same time, the isolation component includes a first isolation block and a second isolation block. The first isolation block and the second isolation block are connected by sliding up and down, thereby being able to be adjusted according to the actual thickness of the magnetic core to be suitable for different magnetic core thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0022] Figure 1 This is an overall structural diagram of an embodiment of the utility model;

[0023] Figure 2 It is a cross-sectional view of an embodiment of the utility model;

[0024] Figure 3 It is an enlarged view of part A of the embodiment of the present utility model.

[0025] Among them, 1. base; 2. inductor body; 201. magnetic core; 202. winding coil; 3. through hole; 4. isolation component; 401. first isolation block; 402. second isolation block; 5. isolation groove; 6. first elastic member; 7. locking component; 701. locking block; 702. locking hole; 703. second elastic member; 8. first limit block; 9. second limit block; 10. accommodating groove; 11. first adjustment block; 12. second adjustment block. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] This embodiment introduces a three-phase common-mode inductor.

[0028] like Figure 1 and Figure 2 As shown, a three-phase common-mode inductor includes a base 1 and an inductor body 2, which is mounted on the base 1. In this embodiment, the inductor body 2 includes a magnetic core 201 and three sets of winding coils 202, each wound around the magnetic core 201. Furthermore, the base 1 is provided with multiple through-holes 3 for the ends of the corresponding winding coils 202 to pass through, with each through-hole 3 corresponding to the ends of the winding coils 202.

[0029] An insulating bracket for isolating the winding coil 202 is provided at the center of the base 1. The insulating bracket includes a first adjusting block 11 and a second adjusting block 12. The second adjusting block 12 is vertically arranged and connected to the base 1. The first adjusting block 11 is sleeved on the first adjusting block 11. The first adjusting block 11 and the second adjusting block 12 are connected by sliding up and down. In this embodiment, the second adjusting block 12 is vertically arranged and connected to the base 1.

[0030] A receiving groove 10 is defined at the end of the second adjustment block 12 facing away from the base 1. This groove 10 extends along the height of the second adjustment block 12. A first elastic member 6 is positioned within the groove 10. Its ends are connected to the first adjustment block 11 and two opposing surfaces of the bottom of the groove 10, respectively. In this embodiment, the first elastic member is a first spring. The function of the first elastic member 6 is to prevent the first adjustment block 11 from falling off during adjustment.

[0031] Furthermore, the insulating support also includes a plurality of isolation components 4, which are circumferentially arranged on the side walls of the first adjustment block, and each isolation component is located between two adjacent groups of winding coils, and the end of the isolation component away from the first adjustment block contacts the inner surface of the magnetic core. Specifically, the isolation component 4 includes a first isolation block 401 and a second isolation block 402. The first isolation block 401 is connected to the side wall of the first adjustment block 11, and the first isolation block 401 is arranged along the height direction of the first adjustment block 11. The second isolation block 402 is connected to the second adjustment block 12, and the second isolation block 402 is arranged along the height direction of the second adjustment block 12.

[0032] The first isolation block 401 has an isolation slot 5 at one end facing the base 1. The isolation slot 5 extends along the height of the second isolation block 402 and extends through the width of the second isolation block 402, connecting the interior of the first adjustment block 11 with the isolation slot 5. When the first adjustment block 11 slides up and down along the second adjustment block, the second isolation block 402 slides and connects with the isolation slot 5, thereby adjusting the height between the first and second isolation blocks 401, 402. At this time, the end face of the first isolation block 401 away from the first adjustment block 11 and the end face of the second isolation block 402 away from the second adjustment block 12 contact the inner surface of the magnetic core 201, thereby providing isolation.

[0033] like Figure 3As shown, in order to ensure that the inductor body 2 is more stably placed on the base 1 after installation, a locking assembly 7 is provided at the end of the first isolation block 401 away from the base 1. The locking assembly 7 includes a locking block 701 and a second elastic member 703. A locking hole 702 is provided at the end of the first isolation block 401 away from the base 1. The locking block 701 and the second elastic member 703 are located in the locking hole 702. The two ends of the second elastic member 703 are respectively connected to the two end surfaces of the locking block 701 opposite to the locking hole 702. In this embodiment, the locking block 701 is used to extend and retract into the locking hole 702. When the second elastic member 703 returns to its original position under the action of the elastic restoring force,

[0034] The locking block 701 extends into the locking hole 702 and contacts the end surface of the magnetic core 201 away from the base 1, thereby further enhancing the stability of the inductor body 2 on the base. In addition, the end of the locking block 701 away from the second elastic member 703 is a circular surface, which facilitates the installation of the inductor body 2.

[0035] In addition, the base 1 is provided with several first stoppers 8, which are arranged along the circumference of the inductor body 2 to define the position of the inductor body 2. Furthermore, the base 1 is provided with second stoppers 9, each corresponding to each of the first stoppers 8. These second stoppers 9 support the magnetic core 201, creating a gap between the inductor body 2 and the base 1, thereby facilitating glue dispensing and accelerating heat dissipation.

[0036] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0038] In this utility model, terms such as "upper", "lower", "left", "right", "front", "back", "vertical" and "

[0039] The directions or positional relationships indicated by “straight”, “horizontal”, “side”, and “bottom” are based on the directions or positional relationships shown in the accompanying drawings. They are relational terms determined merely for the convenience of describing the structural relationships of the various parts or elements of the present invention. They do not specifically refer to any part or element in the present invention and should not be understood as limitations on the present invention.

[0040] In this utility model, terms such as "fixed connection," "connected," and "connection" should be interpreted broadly to mean a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediary. Relevant researchers or technicians in this field may determine the specific meaning of these terms in this utility model based on specific circumstances, and they should not be construed as limiting this utility model.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

[0042] Although the above description of the specific implementation methods of the present invention is combined with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present invention.

Claims

1. A three-phase common-mode inductor, comprising a base (1), an inductor body (2) arranged on the base (1), the inductor body (2) comprising a magnetic core (201) and three groups of winding coils (202), the three groups of winding coils (202) being wound on the magnetic core (201), characterized in that: The base (1) is provided with an insulating bracket for isolating the winding coil (202), the insulating bracket comprising a first adjusting block (11) and a second adjusting block (12), the second adjusting block (12) being provided on the base (1), the first adjusting block (11) being sleeved on the second adjusting block (12), the second adjusting block (12) being connected to the first adjusting block (11) in an upward and downward sliding manner, and a locking component for locking and unlocking is provided between the insulating bracket and the magnetic core (201).

2. The three-phase common-mode inductor according to claim 1, characterized in that: The insulating bracket further comprises a plurality of isolation components (4), wherein the plurality of isolation components (4) are circumferentially arranged on the side wall of the first adjustment block (11), and each group of the isolation components (4) is respectively located between two adjacent groups of the winding coils (202), and an end of the isolation component (4) away from the first adjustment block (11) contacts the inner surface of the magnetic core (201).

3. The three-phase common-mode inductor according to claim 1, characterized in that: The second adjustment block (12) is provided with a receiving groove (10), a first elastic member (6) is provided in the receiving groove (10), and two ends of the first elastic member (6) are respectively connected to the first adjustment block (11) and the bottom of the receiving groove (10).

4. The three-phase common-mode inductor according to claim 2, characterized in that: The isolation assembly (4) comprises a first isolation block (401) and a second isolation block (402), wherein the first isolation block (401) is connected to the first adjustment block (11), and the second isolation block (402) is connected to the side wall of the second adjustment block (12); an isolation groove (5) is provided on the first isolation block (401), and the isolation groove (5) is arranged to penetrate and communicate with the interior of the first adjustment block (11); the first isolation block (401) is located in the isolation groove (5), and the first isolation block (401) is slidably connected to the isolation groove (5).

5. The three-phase common-mode inductor according to claim 4, characterized in that: The locking assembly (7) comprises a locking block (701) and a second elastic member (703); a locking hole (702) is provided at one end of the first isolation block (401) away from the base (1); the second elastic member (703) is located in the locking hole (702); two ends of the second elastic member (703) are respectively connected to two opposite surfaces of the locking block (701) and the bottom of the locking hole (702); and the locking block (701) extends out of the locking hole (702) under the action of the elastic restoring force of the second elastic member (703) and contacts the surface of the magnetic core (201) away from the base (1).

6. The three-phase common-mode inductor according to claim 5, characterized in that: An arc surface is provided on one end of the locking block (701) away from the second elastic member (703).

7. The three-phase common-mode inductor according to claim 1, characterized in that: A plurality of first limiting blocks (8) are circumferentially arranged on the base (1), and the plurality of first limiting blocks (8) are used to limit the position of the winding coil (202).

8. The three-phase common-mode inductor according to claim 7, characterized in that: The first limiting block (8) is provided with a second limiting block (9) for supporting the magnetic core (201).

9. The three-phase common-mode inductor according to claim 1, characterized in that: The base (1) is provided with a plurality of through holes (3) for the ends of the winding coils (202) to pass through, and the through holes (3) correspond one-to-one to the ends of the winding coils (202).

10. The three-phase common-mode inductor according to claim 4, characterized in that: One end of the first isolation block (401) away from the first adjustment block (11) and one end of the second isolation block (402) away from the second adjustment block (12) are in contact with the inner surface of the magnetic core (201).

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