Anti-electromagnetic interference device for alternating current circuit

Abstract

The utility model discloses an alternating current circuit anti-electromagnetic interference device, which comprises a magnetic ring fixing shell, a magnetic ring and a copper bar assembly, a plurality of notches corresponding to the width of the magnetic ring are equidistantly arranged at the upper end and the lower end of the magnetic ring fixing shell, the magnetic ring is arranged in the magnetic ring fixing shell, and the copper bar assembly is arranged in the magnetic ring fixing shell. The upper part and the lower part are respectively clamped into corresponding notches of the magnetic ring fixing shell; the copper bar assembly penetrates in from one end of the magnetic ring fixing shell and one end of the magnetic ring and then penetrates out from the other end of the magnetic ring fixing shell and the other end of the magnetic ring. The magnetic ring is installed in the magnetic ring fixing shell, the copper bar assembly penetrates through the shell and the annular magnetic core, so that a simple common mode inductor is formed, the common mode inductor can prevent transmission of common mode interference signals, electromagnetic interference and noise in a circuit are reduced, and the reliability of the common mode inductor is improved. Therefore, the anti-electromagnetic interference effect in the alternating current circuit can be achieved, the structure is simple, installation is convenient, the production cost can be saved, the production efficiency is improved, and good universality is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of power electronics, in particular to an AC circuit anti-electromagnetic interference device. Background Art

[0002] The interference problem is an important problem that the power electronics industry has always faced. In the working environment of the mechatronic system, there are a large number of electromagnetic signals, such as power grid fluctuations, the start and stop of high-voltage equipment, and electromagnetic radiation from high-voltage equipment and switches. When they generate electromagnetic induction and interference shocks in the system, they often disrupt the normal operation of the system. In mild cases, it causes system instability and reduces the accuracy of the system; in severe cases, it can cause the control system to freeze or malfunction, causing equipment damage or personal injury. In order to solve the interference problem, the anti-electromagnetic interference device naturally becomes an important part that needs to be considered in the design. For this reason, this application provides a new AC circuit anti-electromagnetic interference device. Utility Model Content

[0003] The technical problem to be solved by the utility model is: how to solve the problem of poor anti-interference ability of AC circuits existing in the prior art.

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

[0005] An AC circuit anti-electromagnetic interference device comprises a magnetic ring fixing shell, a magnetic ring and a copper busbar assembly, wherein the upper and lower ends of the magnetic ring fixing shell are equidistantly provided with a plurality of slots corresponding to the width of the magnetic ring, the magnetic ring is installed inside the magnetic ring fixing shell, and the upper and lower ends are respectively inserted into the corresponding slots of the magnetic ring fixing shell; the copper busbar assembly penetrates from the magnetic ring fixing shell and one end of the magnetic ring, and then penetrates from the other end of the magnetic ring fixing shell and the magnetic ring, and the copper busbar assemblies at the two ends are respectively connected through insulator 1 and insulator 2.

[0006] The present application forms a simple common-mode inductor by installing a magnetic ring in a magnetic ring fixed shell, and the copper busbar assembly passes through the shell and the ring-shaped magnetic core. The common-mode inductor can prevent the transmission of common-mode interference signals and reduce electromagnetic interference and noise in the circuit. Therefore, it can be used to play a role in resisting electromagnetic interference in AC circuits. The present application has a simple structure and is easy to install. It can save production costs and improve production efficiency, and it also has good universality.

[0007] As a further solution of the utility model: the magnetic ring fixing shell includes epoxy plate 1, epoxy plate 2, mounting frame 1 and mounting frame 2, the mounting frame 1 is a frame-like structure, wherein epoxy plate 1 and epoxy plate 2 are installed on the upper and lower sides, and the mounting frame 2 is arranged below epoxy plate 2.

[0008] As a further solution of the utility model: a magnetic ring groove body corresponding to the magnetic ring is opened inside the first mounting frame.

[0009] As a further solution of the utility model: the copper bar assembly includes copper bar one, copper bar two, copper bar three and copper bar four, and the two ends of the four copper bars are connected by insulator one and insulator two respectively.

[0010] As a further solution of the utility model: fixing pieces are installed on both the front and rear side plates of the magnetic ring fixing shell, and both ends of the insulator 1 and the insulator 2 are installed on the fixing pieces.

[0011] As a further solution of the utility model: the copper bar one, copper bar two, copper bar three and copper bar four are distributed equidistantly.

[0012] As a further solution of the utility model: the width of the notch on the magnetic ring fixing shell is greater than the width of the magnetic ring.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The present application forms a simple common-mode inductor by installing a magnetic ring in a magnetic ring fixed shell, and the copper busbar assembly passes through the shell and the ring-shaped magnetic core. The common-mode inductor can prevent the transmission of common-mode interference signals and reduce electromagnetic interference and noise in the circuit. Therefore, it can be used to play a role in resisting electromagnetic interference in AC circuits. The present application has a simple structure and is easy to install. It can save production costs and improve production efficiency, and it also has good universality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of an AC circuit anti-electromagnetic interference device according to an embodiment of the utility model;

[0016] Figure 2 This is a top view of an AC circuit anti-electromagnetic interference device according to an embodiment of the utility model;

[0017] Figure 3 This is a left view of an AC circuit anti-electromagnetic interference device according to an embodiment of the utility model;

[0018] Explanation of the reference numerals: 1. Mounting frame 1; 2. Magnetic ring; 3. Epoxy board 1; 4. Mounting frame 2; 5. Epoxy board 2; 6. Copper busbar 1; 7. Copper busbar 2; 8. Copper busbar 3; 9. Insulator 1; 10. Insulator 2; 11. Fixing piece; 12. Copper busbar 4. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0020] Reference Figure 1 , Figure 2 and Figure 3 An AC circuit anti-electromagnetic interference device includes a mounting frame 1, a magnetic ring 2, an epoxy board 13, a mounting frame 24, an epoxy board 25, a copper bar 16, a copper bar 27, a copper bar 38, an insulator 19, an insulator 210, a fixing part 11 and a copper bar 412, wherein the mounting frame 1 is a rectangular frame structure, the epoxy board 13 and the epoxy board 25 are installed at the upper and lower ends of the mounting frame 1, the magnetic ring 2 is arranged inside the mounting frame 1, and the copper bar 16, the copper bar 27, the copper bar 38 and the copper bar 412 pass through the magnetic ring 2.

[0021] Reference Figure 1 A magnetic ring groove is horizontally opened inside the mounting frame 1, wherein a plurality of grooves are symmetrically opened on the epoxy plate 1 3 and the epoxy plate 2 5, and the width of the groove is consistent with the thickness of the magnetic ring 2. After the magnetic ring 2 is installed, the standing width can just fit into the groove, so the grooves on the epoxy plate 1 3 and the epoxy plate 2 5 can just limit the magnetic ring 2; fixing parts 11 are installed on the front and rear sides of the mounting frame 1.

[0022] Reference Figure 1 and Figure 2 There are several magnetic rings 2, and the several magnetic rings 2 are equidistantly arranged inside the mounting frame 1, and the top and bottom of the magnetic ring 2 are respectively inserted into the epoxy plate 1 3 and the epoxy plate 2 5. The magnetic ring 2 is essentially an annular magnetic core.

[0023] Reference Figure 1 Epoxy board 13 can be detachably mounted on the top of mounting frame 1, and epoxy board 13 is a flat plate structure, while epoxy board 25 can be detachably mounted on the bottom of mounting frame 1, and epoxy board 25 has the same structure as epoxy board 13, and also adopts a flat plate structure.

[0024] Reference Figure 1 and Figure 2, copper bar one 6, copper bar two 7, copper bar three 8 and copper bar four 12 are equidistantly distributed, the four copper bars pass through the magnetic ring 2 horizontally, and part of the two ends leak out, and the left ends of the four copper bars are vertically penetrated and connected by insulator two 10, and the right ends of the four copper bars are vertically penetrated and connected by insulator one 9, wherein the two ends of insulator one 9 are respectively installed on the fixing parts 11 located on the mounting frame one 1, and the two ends of insulator two 10 are respectively installed on the fixing parts 11 located on the mounting frame two 4, thereby connecting and limiting the four copper bars of copper bar one 6, copper bar two 7, copper bar three 8 and copper bar four 12.

[0025] The specific operating principles of this application are as follows:

[0026] The mounting frame 1 and the mounting frame 2 4 are respectively used as the upper and lower parts, and the magnetic ring 2, the epoxy board 1 3 and the epoxy board 2 5 are fixed in the middle. The epoxy board 1 3 and the epoxy board 2 5 are provided with slots matching the width of the magnetic ring 2, so that the magnetic ring 2 can be well confined in the slots and cannot move left and right. Then the copper bar 1 6, the copper bar 2 7, the copper bar 3 8 and the copper bar 4 12 are passed through the middle magnetic ring hole, and the copper bar 1 6, the copper bar 2 7, the copper bar 3 8 and the copper bar 4 12 are fixed on the mounting frame 1 by the insulator 1 9, the insulator 2 10 and the fixing part 11. In this way, the device has been assembled and can be installed and used. By installing the device on the path in the cabinet that needs to resist electromagnetic interference, the electromagnetic interference in the AC circuit can be well weakened and reduced when the cabinet is powered on.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An AC circuit anti-electromagnetic interference device, characterized in that: The invention comprises a magnetic ring fixing shell, a magnetic ring (2) and a copper bar assembly, wherein the upper and lower ends of the magnetic ring fixing shell are equidistantly provided with a plurality of slots corresponding to the width of the magnetic ring (2), and the magnetic ring (2) is installed inside the magnetic ring fixing shell and is respectively inserted into the corresponding slots of the magnetic ring fixing shell at the top and bottom; the copper bar assembly is inserted from one end of the magnetic ring fixing shell and the magnetic ring (2) and then is inserted from the other end of the magnetic ring fixing shell and the magnetic ring (2); and the copper bar assemblies at the two ends are respectively connected via an insulator 1 (9) and an insulator 2 (10).

2. The AC circuit anti-electromagnetic interference device according to claim 1, characterized in that: The magnetic ring fixing shell comprises an epoxy plate one (3), an epoxy plate two (5), a mounting frame one (1) and a mounting frame two (4), wherein the mounting frame one (1) is a frame-like structure, wherein the epoxy plate one (3) and the epoxy plate two (5) are mounted on the upper and lower sides, and the mounting frame two (4) is arranged below the epoxy plate two (5).

3. The AC circuit anti-electromagnetic interference device according to claim 2, characterized in that: A magnetic ring groove body corresponding to the magnetic ring (2) is provided inside the mounting frame 1 (1).

4. The AC circuit anti-electromagnetic interference device according to claim 1, characterized in that: The copper bar assembly comprises copper bar one (6), copper bar two (7), copper bar three (8) and copper bar four (12), and two ends of the four copper bars are connected respectively by insulator one (9) and insulator two (10).

5. The AC circuit anti-electromagnetic interference device according to claim 4, characterized in that: Fixing members (11) are installed on both the front and rear side plates of the magnetic ring fixing housing, and both ends of the insulator 1 (9) and the insulator 2 (10) are installed on the fixing members (11).

6. The AC circuit anti-electromagnetic interference device according to claim 4, characterized in that: The copper bar one (6), copper bar two (7), copper bar three (8) and copper bar four (12) are distributed at equal intervals.

7. The AC circuit anti-electromagnetic interference device according to claim 1, characterized in that: The width of the slot on the magnetic ring fixing housing is greater than the width of the magnetic ring (2).

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