Integrated large-current common-mode inductor

Abstract

The utility model relates to the technical field of common-mode inductors, and discloses an integrated large-current common-mode inductor which comprises an outer cylinder and a magnetic core, one or two notches are formed in the outer cylinder, two sets of inductance coils are wound on the magnetic core, the power connection ends of the inductance coils are installed on check blocks, the check blocks are installed in the notches in a matched mode, and the check blocks are installed in the notches in a matched mode. Meanwhile, the magnetic core and the inductance coil are installed in the outer cylinder body, and the outer cylinder body is further filled with insulating resin. According to the utility model, the stop block, the inductance coil and the magnetic core form an integral structure, and in the splicing process, the stop block is matched with the notch, so that integral installation is realized, rapid assembly is convenient to realize, and the inductance coil is protected through the outer cylinder body.

Description

Technical Field

[0001] The utility model relates to the technical field of common mode inductors, in particular to an integrated large current common mode inductor. Background Art

[0002] Computers, various servers, telecommunication products and other electronic instruments have a mixture of various high-frequency circuits, digital circuits and analog circuits on their motherboards. The switching power supplies in these circuits will generate a large amount of high-frequency electromagnetic interference when working. Setting common-mode inductors on the motherboard can be used to filter electromagnetic interference signals and suppress the outward radiation of electromagnetic waves.

[0003] At present, the common mode inductor in the prior art mainly includes a base, a magnetic core arranged on the base and two coils arranged on the magnetic core. The coil on the base is exposed to the outside, which easily causes damage to the insulation layer on the surface of the coil. Utility Model Content

[0004] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0005] The utility model is an integrated large current common mode inductor, comprising an outer cylinder and a magnetic core, wherein the outer cylinder is provided with one or two notches, two groups of inductance coils are wound on the magnetic core, the power connection end of the inductance coil is mounted on a block, the block is matched and mounted in the notch, the magnetic core and the inductance coil are mounted inside the outer cylinder, and the outer cylinder is also filled with insulating resin;

[0006] The block, the inductor coil and the magnetic core form an integral structure. During the assembly process, the block is matched with the notch to achieve overall installation, which is convenient for rapid assembly. In addition, insulating resin is filled in the gap of the outer cylinder to protect the position of the internal structure of the outer cylinder and itself.

[0007] Furthermore, the open side surface of the outer cylinder is provided with convex blocks distributed along the axial direction, and the surface of the convex blocks is provided with notches communicating with the interior of the outer cylinder;

[0008] By providing a protruding block protruding outward, during the installation process, it is convenient to achieve position-limiting cooperation between the tooling fixture and the protruding block, thereby facilitating limiting the position of the rear notch after fixing, and facilitating assembly.

[0009] Furthermore, the slot includes a first slot body and a second slot body, the side of the first slot body is provided with a second slot body, the first slot body and the second slot body are connected to the inside and outside of the outer cylinder, and a limiting protrusion is provided on at least one vertical side of the second slot body.

[0010] Further, the block is provided with step surfaces on both opposite sides, a through groove and a limiting groove are provided on one side of the step surface, a deep groove connected with the through groove is provided on the outer surface of the block, the block is installed inside the groove, the limiting groove is installed in cooperation with the limiting protrusion, and the step surface is cooperated with the inner wall of the first groove body and the inner wall of the second groove body;

[0011] During installation, the inner wall of the first groove body and the inner wall of the second groove body cooperate with the step surface to facilitate limiting. After installation, the position of the stopper is limited by the cooperation between the limiting groove and the limiting protrusion.

[0012] Furthermore, the block is provided with two or four through holes, the end of the inductor coil is sleeved with a sleeve passing through the through hole, the sleeve is installed in the through hole, and the connection between the through hole and the inductor coil is sealed by the sleeve.

[0013] Furthermore, the magnetic core is a ring-shaped structure and is used to wind two groups of inductor coils.

[0014] The utility model has the following beneficial effects:

[0015] (1) The utility model forms an integral structure by means of a block, an inductor coil and a magnetic core. During the assembly process, the block is matched with the notch to achieve overall installation, which is convenient for rapid assembly and protects the inductor coil through the outer cylinder.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the outer cylinder structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the connection between the stopper and the inductor coil of the utility model;

[0022] Figure 5 This is a schematic diagram of the stopper structure of the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of an embodiment of the utility model;

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] In the figure: 1, outer cylinder; 11, notch; 111, first slot; 112, second slot; 113, limiting protrusion; 2, stopper; 21, step surface; 22, through hole; 23, through slot; 24, deep slot; 25, limiting slot; 3, inductor; 4, sleeve; 5, magnetic core; 6, insulating resin. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-Figure 6 As shown, the utility model is an integrated large current common mode inductor, comprising an outer cylinder 1 and a magnetic core 5.

[0028] Embodiment 1, as Figure 1-5 As shown, the outer cylinder 1 is provided with two notches 11, the angle formed between the two notches 11 and the axis is A, 0<A<180°, two groups of inductance coils 3 are wound on the magnetic core 5, the power connection end of the inductance coil 3 is installed on the stopper 2, the stopper 2 is installed in the notch 11, and the magnetic core 5 and the inductance coil 3 are installed inside the outer cylinder 1, and the outer cylinder 1 is also filled with insulating resin 6;

[0029] The block 2, the inductor 3 and the magnetic core 5 form an integral structure. During the assembly process, the block 2 is matched with the notch 11 to achieve overall installation, which is convenient for rapid assembly. In addition, the insulating resin 6 is filled in the gap of the outer cylinder 1 to protect the position of the internal structure of the outer cylinder 1 and itself.

[0030] The open side surface of the outer cylinder 1 is provided with convex blocks distributed along the axial direction, and the surface of the convex blocks is provided with notches 11 communicating with the interior of the outer cylinder 1;

[0031] By providing a protruding block protruding outward, it is convenient to achieve position-limiting cooperation between the tooling fixture and the protruding block during the installation process, thereby facilitating the position of the rear notch 11 to be fixed and facilitating assembly.

[0032] The slot 11 includes a first slot body 111 and a second slot body 112. The second slot body 112 is provided on the side of the first slot body 111. The first slot body 111 and the second slot body 112 are connected to the inside and outside of the outer cylinder 1. A limiting protrusion 113 is provided on at least one vertical side of the second slot body 112.

[0033] The stopper 2 is provided with step surfaces 21 on both opposite sides, a through groove 23 and a limiting groove 25 are provided on one side of the step surface 21, and a deep groove 24 connected with the through groove 23 is provided on the outer surface of the stopper 2. The stopper 2 is installed inside the notch 11, and the limiting groove 25 is installed in cooperation with the limiting protrusion 113, and the step surface 21 is matched with the inner wall of the first groove body 111 and the inner wall of the second groove body 112;

[0034] During installation, the inner wall of the first groove body 111 and the inner wall of the second groove body 112 cooperate with the step surface 21 to facilitate limiting. After installation, the limiting groove 25 cooperates with the limiting protrusion 113 to limit the position of the rear stopper 2 after installation.

[0035] The block 2 is provided with two through holes 22 , and the ends of the inductor 3 are sleeved with a sleeve 4 passing through the through holes 22 . The sleeve 4 is installed in the through holes 22 , and the connection between the through holes 22 and the inductor 3 is sealed by the sleeve 4 .

[0036] The magnetic core 5 is a ring-shaped structure and is used to wind two groups of inductor coils 3 .

[0037] Embodiment 2, as Figure 3-6 As shown, a slot 11 is provided on the outer cylinder 1, two groups of inductance coils 3 are wound on the magnetic core 5, the power connection end of the inductance coil 3 is installed on the block 2, and the block 2 is installed in the slot 11, and the magnetic core 5 and the inductance coil 3 are installed inside the outer cylinder 1, and the outer cylinder 1 is also filled with insulating resin 6;

[0038] The block 2, the inductor 3 and the magnetic core 5 form an integral structure. During the assembly process, the block 2 is matched with the notch 11 to achieve overall installation, which is convenient for rapid assembly. In addition, the insulating resin 6 is filled in the gap of the outer cylinder 1 to protect the position of the internal structure of the outer cylinder 1 and itself.

[0039] The side surface of the outer cylinder 1 is provided with convex blocks distributed along the axial direction, and the surface of the convex blocks is provided with notches 11 communicating with the interior of the outer cylinder 1;

[0040] By providing a protruding block protruding outward, it is convenient to achieve position-limiting cooperation between the tooling fixture and the protruding block during the installation process, thereby facilitating the position of the rear notch 11 to be fixed and facilitating assembly.

[0041] The slot 11 includes a first slot body 111 and a second slot body 112. The second slot body 112 is provided on the side of the first slot body 111. The first slot body 111 and the second slot body 112 are connected to the inside and outside of the outer cylinder 1. A limiting protrusion 113 is provided on at least one vertical side of the second slot body 112.

[0042] The stopper 2 is provided with step surfaces 21 on both opposite sides, a through groove 23 and a limiting groove 25 are provided on one side of the step surface 21, and a deep groove 24 connected with the through groove 23 is provided on the outer surface of the stopper 2. The stopper 2 is installed inside the notch 11, and the limiting groove 25 is installed in cooperation with the limiting protrusion 113, and the step surface 21 is matched with the inner wall of the first groove body 111 and the inner wall of the second groove body 112;

[0043] During installation, the inner wall of the first groove body 111 and the inner wall of the second groove body 112 cooperate with the step surface 21 to facilitate limiting. After installation, the limiting groove 25 cooperates with the limiting protrusion 113 to limit the position of the rear stopper 2 after installation.

[0044] The block 2 is provided with four through holes 22 , and the ends of the inductor 3 are sleeved with a sleeve 4 passing through the through holes 22 . The sleeve 4 is installed in the through holes 22 , and the connection between the through holes 22 and the inductor 3 is sealed by the sleeve 4 .

[0045] The magnetic core 5 is a ring-shaped structure and is used to wind two groups of inductor coils 3 .

[0046] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An integrated high-current common-mode inductor, comprising an outer cylinder (1) and a magnetic core (5), characterized in that: The outer cylinder (1) is provided with one notch (11) or two notches (11); Two groups of inductance coils (3) are wound on the magnetic core (5), and the power connection ends of the inductance coils (3) are mounted on the stopper (2); The stopper (2) is mounted in the notch (11), while the magnetic core (5) and the inductor coil (3) are mounted inside the outer cylinder (1). The outer cylinder (1) is also filled with insulating resin (6).

2. The integrated high current common mode inductor according to claim 1, characterized in that: The open side surface of the outer cylinder (1) is provided with convex blocks distributed along the axial direction, and the surface of the convex blocks is provided with notches (11) communicating with the interior of the outer cylinder (1).

3. The integrated high current common mode inductor according to claim 2, characterized in that: The notch (11) comprises a first notch body (111) and a second notch body (112); the second notch body (112) is provided on a side surface of the first notch body (111); the first notch body (111) and the second notch body (112) are connected to the inside and outside of the outer cylinder (1); A limiting protrusion (113) is provided on at least one vertical side surface of the second groove body (112).

4. The integrated high current common mode inductor according to claim 3, characterized in that: The stopper (2) is provided with step surfaces (21) on both opposite side surfaces; A through groove (23) and a limiting groove (25) are formed on one side of the step surface (21); and a deep groove (24) communicating with the through groove (23) is formed on the outer surface of the stopper (2); The stopper (2) is installed inside the slot (11), and the limiting slot (25) is installed in cooperation with the limiting protrusion (113), and the step surface (21) is installed in cooperation with the inner wall of the first slot body (111) and the inner wall of the second slot body (112).

5. The integrated high current common mode inductor according to claim 1, characterized in that: The stopper (2) is provided with two through holes (22) or four through holes (22); The end of the inductor coil (3) is sleeved with a sleeve (4) passing through a through hole (22), and the sleeve (4) is installed in the through hole (22).

6. The integrated high current common mode inductor according to claim 1, characterized in that: The magnetic core (5) is a ring-shaped structure.

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