EMI power supply filtering assembly

Abstract

The utility model provides an EMI power supply filtering assembly, which comprises a square filtering assembly, an arc-shaped filter, a rectangular connector, a first circular connector and a second circular connector, and is characterized in that the square filtering assembly is fixedly connected with the arc-shaped filter and is perpendicular to the arc-shaped filter; the first circular connector and the rectangular connector are both arranged on the square filtering assembly, and the second circular connector is arranged on the arc-shaped filter and used for being in butt joint with external equipment and being matched with the square filtering assembly and the arc-shaped filter to achieve the power filtering function. The EMI power supply filtering device is designed to be of a special-shaped integrated structure, so that a narrow space can be utilized, other equipment can be embedded in a mode of combining the arc-shaped filter and the square filter, the internal space of the equipment is utilized to the maximum extent, and the utilization rate of the internal space of the product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply filters, in particular to an EMI power supply filter component. Background Art

[0002] With the continuous development of electronic technology, electronic equipment has increasingly higher requirements for power quality. EMI power filters, as a device to improve power quality, can meet these high requirements and ensure the normal operation of equipment. At the same time, with the continuous development of urbanization and industrialization, noise and interference in the power grid are becoming increasingly serious. These noise and interference not only affect the normal operation of electronic equipment, but may also have an impact on human health. Power filtering plays an important role in protecting electronic equipment and improving the quality of life, and is indispensable in existing power supplies. With the increasing degree of integration of existing equipment, the utilization of internal space in product design is also becoming more and more demanding. Traditional power filters are mostly neat rectangular structures that cannot be well integrated with other equipment, resulting in low internal space utilization of the product. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention provides an EMI power filter component, which solves the problems in the prior art.

[0004] According to an embodiment of the present invention, an EMI power filter assembly includes:

[0005] A square filter assembly, an arc filter, a rectangular connector, a first circular connector, and a second circular connector. The square filter assembly is fixedly connected to the arc filter, and the square filter assembly and the arc filter are arranged vertically.

[0006] The first circular connector and the rectangular connector are both arranged on the square filter assembly, and the second circular connector is arranged on the arc filter, which is used to connect with external equipment and cooperate with the square filter assembly and the arc filter to realize the power supply filtering function.

[0007] Preferably, the arc filter comprises:

[0008] An arc-shaped housing is provided with a first groove and a second groove, and the second circular connector is connected to the inner wall of the second groove by screws;

[0009] The arc cover plate is adapted to the arc-shaped shell, the arc cover plate and the arc-shaped shell are connected by a plurality of screws, and the arc cover plate is arranged on one side of the first groove;

[0010] The first anti-interference magnetic ring is arranged in the second groove and is located between the second circular connector and the first groove.

[0011] Preferably, the arc-shaped filter further includes:

[0012] A resin-sealed screw-mounted filter, wherein two adjacent resin-sealed screw-mounted filters are arranged side by side on the inner wall of a first groove, one end of the resin-sealed screw-mounted filter extends into the second groove and is connected to a connecting device; the other end of the resin-sealed screw-mounted filter is connected to another connecting device, and the two adjacent connecting devices are symmetrically arranged. A thin nut is threadedly connected between the resin-sealed screw-mounted filter and the connecting device, and the thin nut is located in the second groove. The connecting device includes:

[0013] A transfer circuit board connected to one end of the resin-sealed screw-mounted filter;

[0014] An insulating plate, the insulating plate being arranged between the resin-sealed screw-mounted filter and the adapter circuit board;

[0015] The interface on the adapter circuit board located in the second groove is connected to the corresponding interface of the second circular connector.

[0016] Preferably, the square filter assembly comprises:

[0017] A shell body is provided with a first tank chamber and a second tank chamber, wherein the first tank chamber and the second tank chamber are arranged side by side;

[0018] A cover plate is connected to the housing by a plurality of screws and is disposed on one side of the first tank chamber;

[0019] A circuit board is arranged in the second slot chamber, and is integrated with anti-reverse connection and anti-surge protection circuits. Some interfaces of the circuit board are connected to corresponding interfaces of the square connector;

[0020] The filter module is arranged in the first slot chamber, part of the interface of the filter module is connected to part of the interface of the circuit board, and part of the interface of the filter module is connected to the corresponding interface of the adapter circuit board in the first groove.

[0021] Preferably, the square filter assembly further includes:

[0022] The third slot chamber is arranged on the shell, the third slot chamber is located on one side of the first slot chamber, and a second anti-interference magnetic ring is arranged in the third slot chamber.

[0023] Preferably, the square filter assembly further includes:

[0024] The connecting block is arranged on the side of the shell away from the cover plate, and a wire passing cavity is provided in the connecting block. The connecting block is arranged close to the third groove chamber. The side wall of the wire passing cavity is connected to the side wall of the first groove by a number of screws, and a number of wire passing holes are provided between the wire passing cavity and the first groove.

[0025] Preferably, a plurality of welding pieces are provided in the second groove, and the welding pieces are connected to the inner wall of the second groove by screws.

[0026] Preferably, it further comprises: a fastening plate, which is arranged on the inner wall of the second slot chamber and is used to further fix the square connector.

[0027] Preferably, part of the interface of the square connector is connected to part of the interface of the second circular connector through a plurality of signal lines, and the signal lines connecting the square connector and the second circular connector are twisted and passed through the first anti-interference magnetic ring;

[0028] Part of the interfaces of the square connector is connected to part of the interfaces of the first circular connector through a plurality of signal lines, and the signal lines connecting the square connector and the first circular connector are twisted and passed through the second anti-interference magnetic ring;

[0029] Part of the interface of the square connector is connected to the shell.

[0030] Preferably, it also includes:

[0031] The bundled wires are respectively connected to the circuit board, the square connector and the first circular connector.

[0032] Compared with the existing technology, the present invention has the following beneficial effects: by designing the EMI power supply filter device as a special-shaped integrated structure, it is possible to utilize a small space, and by combining the arc filter and the square filter, it can be embedded in other equipment to maximize the use of the internal space of the equipment and improve the space utilization rate inside the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0034] Figure 2 This is a structural diagram of a square filter assembly according to another embodiment of the present invention;

[0035] Figure 3 This is a schematic structural diagram of an arc-shaped filter according to another embodiment of the present invention;

[0036] Figure 4 A schematic diagram of an arc-shaped filter according to another embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of the back side of a circular arc filter according to another embodiment of the present invention;

[0038] Figure 6 This is a circuit diagram of a transfer circuit board according to another embodiment of the present invention;

[0039] Figure 7This is a partial circuit diagram of another embodiment of the present invention;

[0040] Figure 8 This is a circuit diagram of another embodiment of the present invention.

[0041] Explanation of the accompanying drawings: 1. Square filter assembly; 2. Arc filter; 3. Rectangular connector; 4. Arc shell; 5. First groove; 6. Arc cover; 7. Second circular connector; 8. First anti-interference magnetic ring; 9. Soldering piece; 10. Shell; 11. Filter module; 12. Circuit board; 13. First slot chamber; 14. Second slot chamber; 15. Third slot chamber; 16. First circular connector; 17. Fastening pressure plate; 18. Second groove; 20. Bundling line; 21. Adapter circuit board; 22. Thin nut; 23. Resin-sealed screw-mounted filter; 24. Insulating plate; 25. Cover; 26. Second anti-interference magnetic ring; 27. Connecting block. DETAILED DESCRIPTION

[0042] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0043] like Figures 1 to 8 As shown, the embodiment of the present utility model provides an EMI power filter component, including:

[0044] A square filter assembly 1, an arc-shaped filter 2, a rectangular connector 3, a first circular connector 16, and a second circular connector 7. The square filter assembly 1 is fixedly connected to the arc-shaped filter 2, and the square filter assembly 1 and the arc-shaped filter 2 are arranged vertically.

[0045] The first circular connector 16 and the rectangular connector 3 are both provided on the square filter assembly 1, and the second circular connector 2 is provided on the arc filter 2, for connecting with external equipment and cooperating with the square filter assembly 1 and the arc filter 2 to realize the power supply filtering function;

[0046] The working principle of the above technical solution is as follows: During actual use, the first circular connector 16, the second circular connector 7 and the square connector 3 provided on the square filter component 1 and the arc-shaped filter 2 are connected to the external device to realize the power supply filtering function; at the same time, the square filter component 1 and the arc-shaped filter 2 are designed to be vertical.

[0047] The beneficial effects of the above technical solution: Through the above technical solution, by designing the EMI power supply filter device into a special-shaped integrated structure, it is possible to utilize a small space and integrate other equipment by combining arc-shaped filters and square filters to maximize the use of the internal space of the equipment and improve the space utilization rate inside the product.

[0048] In one embodiment, the arc filter comprises:

[0049] The arc-shaped housing 4 is provided with a first groove 5 and a second groove 18, and the second circular connector 7 is connected to the inner wall of the second groove 18 by screws;

[0050] The arc cover plate 6 is adapted to the arc-shaped housing 4 and connected to the arc-shaped housing 4 by a plurality of screws. The arc cover plate 6 is provided on one side of the first groove 5;

[0051] Arc filter, also includes:

[0052] A resin-sealed screw-mounted filter 23 is provided, and two adjacent resin-sealed screw-mounted filters 23 are arranged side by side on the inner wall of the first groove 5. One end of the resin-sealed screw-mounted filter 23 extends into the second groove 18 and is connected to a connecting device; the other end of the resin-sealed screw-mounted filter 23 is connected to another connecting device. The two adjacent connecting devices are symmetrically arranged. A thin nut 22 is threadedly connected between the resin-sealed screw-mounted filter 23 and the connecting device. The thin nut 22 is located in the second groove 18. The connecting device includes:

[0053] The adapter circuit board 21 is connected to one end of the resin-sealed screw-mounted filter 23;

[0054] An insulating plate 24 is provided between the resin-sealed screw-mounted filter 23 and the adapter circuit board 21;

[0055] The interface on the adapter circuit board 21 located in the second groove 18 is connected to the corresponding interface of the second circular connector 7;

[0056] The square filter assembly 1 comprises:

[0057] The housing 10 is provided with a first tank chamber 13 and a second tank chamber 14, and the first tank chamber 13 and the second tank chamber 14 are arranged side by side;

[0058] The cover plate 25 is connected to the housing 10 by a plurality of screws and is disposed on one side of the first tank chamber 13;

[0059] The circuit board 12 is disposed in the second slot chamber 14. The circuit board 12 is integrated with anti-reverse connection and anti-surge protection circuits. Some interfaces of the circuit board 12 are connected to corresponding interfaces of the square connector 3;

[0060] The filter module 11 is disposed in the first slot chamber 14 , with some interfaces of the filter module 11 connected to some interfaces of the circuit board 12 , and some interfaces of the filter module 11 connected to corresponding interfaces of the adapter circuit board 21 in the first displacement groove 5 ;

[0061] The square filter assembly 1 further includes:

[0062] The connecting block 27 is provided on the side of the housing 10 away from the cover plate 25. A wire passage cavity is provided in the connecting block 27. The connecting block 27 is provided near the third slot chamber 15. The side wall of the wire passage cavity is connected to the side wall of the first groove 5 by a plurality of screws. A plurality of wire passage holes are provided between the wire passage cavity and the first groove 5.

[0063] The working principle and beneficial effects of the above technical solution: In actual use, the external equipment is connected through the square connector 3 and the second circular connector 7 (represented by XS2 in the circuit diagram) to form a loop, wherein the 1, 2, 3, 4 and 5 pins and the 6, 7, 8, 9 and 16 pins of the second circular connector 7 are respectively soldered to the adapter circuit board 21 (represented by DJ7.820.343 in the circuit diagram) located in the second groove 18, and then assembled to the left end of the resin-sealed screw-mounted filter 23. A layer of insulating board 24 is required between the adapter circuit board 21 and the resin-sealed screw-mounted filter 23; the pins 1, 2, 24, 25, 46, 47 of the square connector 3 are soldered together with a 170mm single-core shielded wire (positive) in three groups (2, 2, 3) to the three soldering pad holes at P1 of the circuit board 12, and the pins 3, 4, 26, 27, 48, 49 are welded together with a 170mm single-core shielded wire (negative) in three groups (2, 2, and 3) to the three soldering holes at N1 of the circuit board 12; the filter module 11 (represented by LBMK-DC-10A-R in the circuit diagram) and the 2' and 3' soldering holes are soldered with 1.5 red and blue wires to the P and N positions of the circuit board 12; the 1.5 red and blue wires are welded in the 2 and 3 soldering holes of the filter module 11 and then put into yellow wax tubes, enter the first groove 5 from the wire hole and connect to the adapter circuit board 21, thereby forming a loop, and then the power supply filtering function is realized through the reverse connection and surge protection circuit on the filter module 11 and the circuit board 12 and the resin-sealed screw-mounted filter 23; at the same time, the two 170mm single-core shielded wires welded above are respectively put into identification tubes of 47 and 49, pass through the side circular holes and are tied together with the bundled wire 20; among them, as Figure 6 As shown, two resin sealed screw-mounted filters 23 are represented by C1 and C2 respectively.

[0064] At the same time, the arc-shaped cover plate 6 and the cover plate 25 are connected to the arc-shaped shell 4 and the shell 10 respectively by a number of screws, which facilitates internal maintenance;

[0065] The first slot chamber 13, the second slot chamber 14 and the third slot chamber 15, as well as the first groove 5 and the second groove 18 are separated by metal partitions, which can effectively suppress the coupling phenomenon between different signals and thus solve the electromagnetic compatibility problem in the signal transmission process between systems.

[0066] In one embodiment, the square filter assembly 1 further includes:

[0067] The third slot chamber 15 is provided on the housing 10 and is located on one side of the first slot chamber 13. A second anti-interference magnetic ring 26 is provided in the third slot chamber 15;

[0068] A first anti-interference magnetic ring 8 is provided in the second groove 18 and is located between the second circular connector 7 and the first groove 5;

[0069] Part of the interface of the square connector 3 is connected to part of the interface of the second circular connector 7 through a number of signal lines. The signal lines connecting the square connector 3 and the second circular connector 7 are twisted and connected through the first anti-interference magnetic ring 8.

[0070] Part of the interface of the square connector 3 is connected to part of the interface of the first circular connector 16 through a number of signal lines. The signal lines connecting the square connector 3 and the first circular connector 16 are twisted and connected through the second anti-interference magnetic ring 26.

[0071] Part of the interface of the square connector 3 is connected to the housing 10 .

[0072] The working principle and beneficial effects of the above technical solution are as follows: Pins 7, 8, 30, 31, 52, 9, 10, 32, 33, 54 and 55 of the square connector 3 are connected to pins 32, 33, 34, 35, 36, 17, 18, 20, 21, 39 and 38 of the second circular connector 7 in a one-to-one correspondence, wherein, except for pin 52 of the square connector 3, the other connecting wires are sequentially connected in pairs and twisted together to the corresponding pins of the second circular connector 7; Pins 56, 57, 13, 14, 36 and 37 of the square connector 3 and pin 4 of the second circular connector 7 1, 40, 26, 25, 28, and 27 are connected in a one-to-one correspondence, and the aforementioned connecting wires are sequentially connected in pairs and twisted together to the corresponding pins of the second circular connector 7; at the same time, pins 56, 57, 36, and 37 of the square connector 3 are connected in a one-to-one correspondence to pins 20, 21, 22, and 23 of the first circular connector 16, and the aforementioned connecting wires are sequentially connected in pairs and twisted together to the corresponding pins of the first circular connector 16; and pin 58 of the square connector 3 is respectively connected to pins 19, 22, and 29 of the second circular connector 7 and pin 5 of the first circular connector 16;

[0073] Several signal lines used for connection pass through the first anti-interference magnetic ring 8 and the second anti-interference magnetic ring 26 respectively to realize the signal filtering function; and the pin 62 of the square connector 3 is connected to the shell 10 for grounding; among them, the model of the first anti-interference magnetic ring 8 (represented by anti-interference magnetic ring 1 in the circuit diagram) and the second anti-interference magnetic ring 26 (represented by anti-interference magnetic ring 2 in the circuit diagram) is RH8*10*5.5.

[0074] In one embodiment, the bundled wire 20 is connected to the circuit board 12, the square connector 3 and the first circular connector 16 respectively;

[0075] The working principle and beneficial effects of the above technical solution: In actual use, the pins 5, 28, 50 (HPWMH), 6, 29, 51 (HPWML) of the square connector 3 are output through the inductor L1 to output 6 170mm single-core shielded wires, which are respectively covered with identification tubes of 5, 28, 50, 6, 29, 51 and passed through the side circular holes. The identification tubes are 20mm away from the wire ends; the pins 60, 61 (5V), 59 (GNDA) of the micro rectangular electrical connector are output through the CMF7060-701-2P-T common mode filter (L2) to output 3 170mm single-core shielded Shielded wires are put on the identification tubes of 60, 61, and 59 respectively and pass through the side circular holes, with the identification tubes 20 mm away from the wire ends; when connecting the 3 pins 13, 14, 36, and 37 of the square connector with the first circular connector 16 and the second circular connector 7, two groups of 170 mm twisted-pair shielded wires are connected and pass through the side circular holes, and the identification tubes of 13, 14, 36, and 37 are put on respectively and pass through the side circular holes, with the identification tubes 20 mm away from the wire ends; all the welded 170 mm twisted-pair shielded wires and 170 mm single-core shielded wires are tied together and extended out of the side circular holes of the shell 10 to form a bundled wire 20.

[0076] In one embodiment, a plurality of welding pieces 9 are provided in the second groove 18 , and the welding pieces 9 are connected to the inner wall of the second groove 18 by screws.

[0077] In one embodiment, the device further comprises: a fastening plate 17 , which is disposed on the inner wall of the second slot chamber 14 and is used to further fix the square connector 3 .

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An EMI power filter component, characterized in that: include: A square filter assembly (1), an arc-shaped filter (2), a rectangular connector (3), a first circular connector (16) and a second circular connector (7); the square filter assembly (1) and the arc-shaped filter (2) are fixedly connected; and the square filter assembly (1) and the arc-shaped filter (2) are arranged vertically; The first circular connector (16) and the rectangular connector (3) are both provided on the square filter assembly (1), and the second circular connector (7) is provided on the arc filter (2), and is used for docking with external equipment and cooperating with the square filter assembly (1) and the arc filter (2) to realize a power supply filtering function.

2. An EMI power filter component according to claim 1, characterized in that: Arc filters include: An arc-shaped housing (4), wherein a first groove (5) and a second groove (18) are provided on the arc-shaped housing (4), and a second circular connector (7) is connected to the inner wall of the second groove (18) by screws; The circular arc cover plate (6) is adapted to the circular arc shell (4), the circular arc cover plate (6) and the circular arc shell (4) are connected by a plurality of screws, and the circular arc cover plate (6) is arranged on one side of the first groove (5); A first anti-interference magnetic ring (8) is provided in the second groove (18) and is located between the second circular connector (7) and the first groove (5).

3. An EMI power filter component according to claim 2, characterized in that: Arc filter, also includes: A resin-sealed screw-mounted filter (23) is provided, wherein two adjacent resin-sealed screw-mounted filters (23) are arranged side by side on the inner wall of a first groove (5); one end of the resin-sealed screw-mounted filter (23) extends into a second groove (18) and is connected to a connecting device; the other end of the resin-sealed screw-mounted filter (23) is connected to another connecting device; the two adjacent connecting devices are symmetrically arranged; a thin nut (22) is threadedly sleeved between the resin-sealed screw-mounted filter (23) and the connecting device; the thin nut (22) is located in the second groove (18); and the connecting device comprises: A switching circuit board (21) is connected to one end of a resin-sealed screw-mounted filter (23); An insulating plate (24), the insulating plate (24) being arranged between the resin-sealed screw-mounted filter (23) and the adapter circuit board (21); The interface on the adapter circuit board (21) located in the second groove (18) is connected to the corresponding interface of the second circular connector (7).

4. The EMI power filter component according to claim 1, wherein: The square filter assembly (1) comprises: A housing (10) is provided with a first tank chamber (13) and a second tank chamber (14), wherein the first tank chamber (13) and the second tank chamber (14) are arranged side by side; A cover plate (25), the cover plate (25) is connected to the housing (10) by a plurality of screws, and the cover plate (25) is arranged on one side of the first tank chamber (13); A circuit board (12) is disposed in the second slot chamber (14), the circuit board (12) is integrated with an anti-reverse connection and anti-surge protection circuit, and some interfaces of the circuit board (12) are connected to corresponding interfaces of the rectangular connector (3); A filter module (11) is provided in the first slot chamber (13), a portion of the interface of the filter module (11) is connected to a portion of the interface of the circuit board (12), and a portion of the interface of the filter module (11) is connected to a corresponding interface of the adapter circuit board (21) in the first displacement groove (5).

5. An EMI power filter component as claimed in claim 4, characterized in that: The square filter assembly (1) further comprises: The third slot chamber (15) is provided on the housing (10), the third slot chamber (15) is located on one side of the first slot chamber (13), and a second anti-interference magnetic ring (26) is provided in the third slot chamber (15).

6. The EMI power filter component according to claim 5, characterized in that: The square filter assembly (1) further comprises: A connecting block (27) is provided on a side of the housing (10) away from the cover plate (25), a wire passage cavity is provided in the connecting block (27), the connecting block (27) is provided close to the third slot chamber (15), a side wall of the wire passage cavity is connected to a side wall of the first groove (5) by a plurality of screws, and a plurality of wire passage holes are provided between the wire passage cavity and the first groove (5).

7. The EMI power filter component according to claim 2, wherein: A plurality of welding pieces (9) are arranged in the second groove (18), and the welding pieces (9) are connected to the inner wall of the second groove (18) through screws.

8. The EMI power filter component according to claim 2, wherein: It also includes a fastening plate (17), which is arranged on the inner wall of the second slot chamber (14) and is used to further fix the rectangular connector (3).

9. The EMI power filter component according to claim 2, wherein: Part of the interface of the rectangular connector (3) is connected to part of the interface of the second circular connector (7) via a plurality of signal lines, and the signal lines connecting the rectangular connector (3) and the second circular connector (7) are connected in a twisted manner and pass through the first anti-interference magnetic ring (8); Part of the interface of the rectangular connector (3) is connected to part of the interface of the first circular connector (16) via a plurality of signal lines, and the signal lines connecting the rectangular connector (3) and the first circular connector (16) are twisted and passed through the second anti-interference magnetic ring (26); Part of the interface of the rectangular connector (3) is connected to the housing (10).

10. The EMI power filter component according to claim 1, wherein: Also includes: The bundled wire (20) is respectively connected to the circuit board (12), the rectangular connector (3) and the first circular connector (16).

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