Active filter with multi-layer structure

Abstract

The utility model relates to the technical field of active filters, and discloses a multilayer structure active filter, which comprises an installation cabinet and a plurality of flat cable assemblies, the outer side of the installation cabinet is rotatably connected with a cabinet door, the inner side of the installation cabinet is fixedly connected with a plurality of groups of installation plates, the number of each group of installation plates is two, and the number of the installation plates is two. A filter body is arranged at the top of each group of mounting plates, a plurality of electric wires are arranged in the mounting cabinet, two L-shaped limiting plates are fixedly connected to the top of the mounting plate on the rear side, and two lug plates are fixedly connected to the two sides of the exterior of the filter body. According to the utility model, the filter body can be stably mounted on the mounting plate in the mounting cabinet through the mounting mode that the insertion rod, the movable ring, the spring I and the L-shaped rotating plate are matched, and compared with the traditional bolt mounting mode that a tool needs to be used for tightening operation and the operation in a narrow space in the mounting cabinet is inconvenient, the operation of the scheme is simpler and quicker.

Description

Technical Field

[0001] The utility model relates to the technical field of active filters, in particular to an active filter with a multi-layer structure. Background Art

[0002] Active power filters are a new type of power electronic device used to dynamically suppress harmonics and compensate for reactive power. They are widely used in power systems, communications systems, industrial automation, and many other fields. They effectively filter harmonics of different frequencies, improving power quality, ensuring stable operation of power equipment, and clear transmission of communication signals. Multi-layer active power filters offer a more optimized structural design, enabling more complex functions and higher performance requirements to adapt to increasingly complex and diverse application scenarios.

[0003] In the prior art, active filters are typically installed using traditional bolt-type mounting. Bolts securely connect the filter body to a mounting plate or bracket. In practice, when installing an active filter in a confined electrical control cabinet, operators must first position the filter body, then insert the bolts into the corresponding mounting holes by hand or with a tool, and then tighten the bolts using a screwdriver or other tool. This method presents numerous problems. First, the confined space restricts operator hand movement and makes it difficult to use tools, making bolt alignment and tightening difficult. Furthermore, the limited space can make it difficult for operators to accurately determine the bolt hole position, resulting in time-consuming adjustments and reduced installation efficiency. Furthermore, bolt-type installation requires a specific tightening torque. Excessive torque can damage the filter body or threaded holes in the mounting plate. Excessive torque can result in a less secure connection, and vibration and other factors can cause the bolts to loosen during operation, impacting the filter's proper function. In addition, the bolts may rust after long-term use, making it more difficult to disassemble and replace the filter, increasing maintenance costs and time. Therefore, the technology in this field proposes a multi-layer active filter to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a multi-layer structure active filter, which aims to improve the problem that the traditional bolt installation method of the active filter in the prior art is not convenient enough.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a multi-layer active filter, comprising a mounting cabinet and a plurality of wiring assemblies, wherein the outer side of the mounting cabinet is rotatably connected to a cabinet door, and the inner side of the mounting cabinet is fixedly connected to a plurality of mounting plates, each group of the mounting plates having two mounting plates, and a filter body is arranged on the top of each group of the mounting plates, a plurality of wires are arranged inside the mounting cabinet, and two L-shaped limit plates are fixedly connected to the top of the rear mounting plate, and two ear plates are fixedly connected to both sides of the outer side of the filter body, and mounting holes are provided at corresponding positions of the mounting plate and the ear plates, and two assembly assemblies are arranged on the outer side of the mounting plate; the assembly assemblies are used to mount the filter body on the top of the mounting plate;

[0006] The assembly component includes an insertion rod, which is slidably connected to the inside of the mounting hole, a pull ring is fixedly connected to the bottom of the insertion rod, two movable rings are sleeved on the outside of the insertion rod, and the adjacent sides of the two movable rings are fixedly connected to a spring 1. The top of the mounting plate is rotatably connected to two L-shaped rotating plates, and a groove is provided at the bottom of the L-shaped rotating plate. The top of the ear plate is fixedly connected to a limiting block, and a limiting groove is provided on the outer side of the movable ring on the lower side.

[0007] Furthermore, the top of the insertion rod is engaged with the inside of the groove, and the outer side of the movable ring is in contact with the outer side of the ear plate.

[0008] Furthermore, the outer side of the limiting block is engaged with the inner side of the limiting groove, the bottom of the ear plate is fitted with the top of the mounting plate, and the outer side of the rear ear plate is slidably connected with the outer side of the L-shaped limiting plate.

[0009] Furthermore, two slide grooves are provided on the top of the mounting plate, the cable assembly is arranged on the outside of the mounting plate, and the cable assembly includes a connecting block, the outside of the connecting block is slidably connected to the inside of the slide groove.

[0010] Furthermore, an anti-skid pad is provided on the top of the connecting block, and the anti-skid pad is fitted with the bottom of the filter body, and one end of the connecting block is fixedly connected to a U-shaped block.

[0011] Furthermore, two latching holes are provided inside the U-shaped block, and a U-shaped baffle is slidably connected to the inner side of the U-shaped block.

[0012] Furthermore, two cavities are provided inside the U-shaped baffle, and a clamping block is slidably connected to the inner wall of the cavity, and the outer side of the clamping block is engaged with the inner side of the clamping hole.

[0013] Furthermore, a second spring is fixedly connected to one side of the clamping block, and one end of the second spring is fixedly connected to the inner wall of the cavity.

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

[0015] 1. In the present invention, the filter body can be stably installed on the mounting plate inside the mounting cabinet through the installation method of the plug rod, the movable ring, the spring and the L-shaped rotating plate. Compared with the traditional bolt installation which requires the use of tools for tightening operation and is inconvenient to operate in the narrow space inside the mounting cabinet, the operation of this solution is simpler and faster, does not require complicated tools, and can greatly improve the installation efficiency.

[0016] 2. In the present invention, the wires are bundled by the cooperation of the U-shaped block and the U-shaped baffle. Compared with the traditional cable tie fixing method, the disassembly of this cable assembly is more convenient and quick. Traditional cable ties often need to be cut when disassembling and cannot be reused, which easily leads to waste of resources. However, the present solution can press the card block to shrink and realize the release of the bundle. It is not only easy to disassemble, but also can be reused, which greatly reduces the cost and improves the utilization rate of resources. It also provides convenience for the maintenance and inspection of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a multi-layer active filter proposed by the present invention;

[0018] Figure 2 This is a schematic diagram of the mounting plate structure of a multi-layer active filter proposed in the present invention;

[0019] Figure 3 This is a schematic diagram of the rod structure of a multi-layer active filter proposed by the present invention;

[0020] Figure 4 This is a schematic diagram of the L-shaped rotating plate structure of a multi-layer active filter proposed in the utility model;

[0021] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0022] Legend:

[0023] 1. Installation cabinet; 2. Cabinet door; 3. Filter body; 4. Mounting plate; 5. Ear plate; 6. Mounting hole; 7. Insert rod; 8. Pull ring; 9. Movable ring; 10. Spring 1; 11. L-shaped rotating plate; 12. Groove; 13. Limiting groove; 14. Slide; 15. Connecting block; 16. U-shaped block; 17. Clamping hole; 18. U-shaped baffle; 19. Cavity; 20. Clamping block; 21. Spring 2; 22. L-shaped limiting plate; 23. Wire; 24. Limiting block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figure 1-Figure 3 The utility model provides an embodiment of a multi-layer active filter, comprising an installation cabinet 1 and a plurality of wiring assemblies. The installation cabinet 1 serves as the shell of the entire multi-layer active filter, providing space for installation and protection of various components inside. The outer side of the installation cabinet 1 is rotatably connected to a cabinet door 2. The inner side of the installation cabinet 1 is fixedly connected to a plurality of groups of mounting plates 4, each group of two mounting plates 4 provides a mounting platform for the filter body 3, and the number of each group of mounting plates 4 is two. The top of each group of mounting plates 4 is provided with a filter body 3, which is used to filter the signal in the circuit, remove unnecessary frequency components, and retain useful frequency signals to improve the performance and stability of the circuit. The multiple filter bodies 3 are combined into a multi-layer structure. The interior of the installation cabinet 1 is provided with a plurality of wires 23, and the top of the rear mounting plate 4 is fixedly connected to two L-shaped limit plates 22. The outer sides of the filter body 3 are fixedly connected to two ear plates 5, and the corresponding positions of the mounting plate 4 and the ear plates 5 are provided with mounting holes 6. The outer side of the mounting plate 4 is provided with two assembly components; the assembly component is used to install the filter body 3 on the top of the mounting plate 4; the filter body 3 is installed. The assembly includes an insertion rod 7, which is one of the key components for connecting the filter body 3 to the mounting plate 4. The insertion rod 7 is slidably connected to the inside of the mounting hole 6. The bottom of the insertion rod 7 is fixedly connected to a pull ring 8, which is convenient for operating the up and down movement and position adjustment of the insertion rod 7 by pulling the pull ring 8 when installing and removing the filter body 3. The outer sleeve of the insertion rod 7 is provided with two movable rings 9, and the adjacent sides of the two movable rings 9 are fixedly connected with a spring 10. The elastic force of the spring 10 enables the top of the insertion rod 7 to be stably stuck in the groove 12 of the L-shaped rotating plate 11 to ensure that the filter body The connection between the body 3 and the mounting plate 4 is firm and reliable. The top of the mounting plate 4 is rotatably connected to two L-shaped rotating plates 11. A groove 12 is provided at the bottom of the L-shaped rotating plate 11. The top of the ear plate 5 is fixedly connected to the limiting block 24. A limiting groove 13 is provided on the outer side of the lower movable ring 9. The top of the insertion rod 7 is engaged with the inside of the groove 12. The outer side of the movable ring 9 is fitted with the outer side of the ear plate 5. The outer side of the limiting block 24 is fitted with the inner side of the limiting groove 13. The bottom of the ear plate 5 is fitted with the top of the mounting plate 4, and the outer side of the rear ear plate 5 is slidably connected to the outer side of the L-shaped limiting plate 22.

[0026] Specifically, when assembling a multi-layer active filter, the filter body 3 is placed on top of the two mounting plates 4. During placement, ensure that the two rear ear plates 5 are accurately aligned with the two L-shaped stop plates 22. The L-shaped stop plates 22 serve as positioning and guidance, guiding the filter body 3 quickly and accurately into the proper position and preventing positional deviation during installation. Next, the two movable rings 9 and spring 10 are placed over the outside of the insert rod 7. During insertion, ensure that the stop grooves 13 on the lower movable ring 9 accurately engage with the stop blocks 24 on the top of the ear plates 5. This engagement not only ensures precise positioning of the components but also provides stability for subsequent installation steps. Next, insert the insert rod 7 through the corresponding mounting holes 6 on the mounting plates 4 and ear plates 5. Ensure that the position of the insert rod 7 is accurate and avoids deviation during insertion. Then, manually press the insert rod 7 downward a certain distance while rotating the L-shaped rotating plate 11. When the L-shaped rotating plate 11 is rotated to the appropriate position, the plug rod 7 is released. At this time, the plug rod 7 will bounce upward under the elastic force of the spring 10 and be stuck in the groove 12 at the bottom of the L-shaped rotating plate 11. Through such a series of operations, the filter body 3 is stably assembled. Compared with the traditional bolt installation method, this installation method has obvious advantages in the relatively small space of the installation cabinet 1. The traditional bolt installation requires the use of tools for tightening operations, which is inconvenient to operate in a small space and requires more time to align the bolt holes and tighten the operations. This installation method, which uses the plug rod 7, movable ring 9, spring 10 and L-shaped rotating plate 11, is simpler and faster to operate, does not require complicated tools, can greatly improve the installation efficiency, and is particularly suitable for the installation of the filter body 3 in the installation cabinet 1 with limited space.

[0027] Reference Figure 3-Figure 5 Two slide grooves 14 are provided on the top of the mounting plate 4, and the cable assembly is arranged on the outside of the mounting plate 4. The cable assembly includes a connecting block 15, the outer side of the connecting block 15 is slidably connected to the inner side of the slide groove 14, and a non-slip pad is provided on the top of the connecting block 15, and the non-slip pad is in contact with the bottom of the filter body 3. One end of the connecting block 15 is fixedly connected to a U-shaped block 16, and the U-shaped space inside it is used to place the wires 23. Two card holes 17 are provided inside the U-shaped block 16, and a U-shaped baffle 18 is slidably connected to the inner side of the U-shaped block 16. Two cavities 19 are provided inside the U-shaped baffle 18, and a card block 20 is slidably connected to the inner wall of the cavity 19. The outer side of the card block 20 is engaged with the inner side of the card hole 17, and a spring 21 is fixedly connected to one side of the card block 20, and one end of the spring 21 is fixedly connected to the inner wall of the cavity 19.

[0028] Specifically, after the filter body 3 is installed, the wires 23 need to be sorted and fixed. First, press the connecting block 15 so that it fits tightly with the mounting plate 4, so that the position of the cable assembly is fixed. This ensures that the cable assembly will not move during the subsequent wire sorting process, providing a basis for the orderly arrangement of the wires. Then, sort the wires 23 so that they are neatly arranged and placed inside the U-shaped block 16. The design of the U-shaped block 16 can well accommodate the wires 23 and provide a space for the wires to be placed. Then, push the U-shaped baffle 18 toward the inside of the U-shaped block 16. During the pushing process, when the inclined surfaces of the two clamping blocks 20 inside the U-shaped baffle 18 contact the clamping hole 17 on the U-shaped block 16, due to the action of the inclined surfaces, the clamping block 20 will be subjected to pressure from the edge of the clamping hole 17, so that the entire clamping block 20 will shrink into the cavity 19. As the U-shaped baffle 18 continues to push in, the clamping block 20 moves to the position of the locking hole 17. The clamping block 20 is pushed out by the elastic force of spring 21 and locked into the locking hole 17. The wires 23 are now securely fastened within the cable assembly. This design effectively secures the wires 23, preventing them from dangling or becoming loose, ensuring neat alignment and stable connection. When troubleshooting the wires 23, the operation is also very convenient. Simply insert a screwdriver through the locking hole 17 and push the clamping block 20, retracting it into the cavity 19. The U-shaped baffle 18 can then be easily removed to inspect or maintain the wires 23. Compared to traditional cable tie fastening methods, this cable assembly is much easier and faster to disassemble. Traditional cable ties often need to be cut during removal, making them non-reusable and wasteful. This cable assembly, on the other hand, is not only easy to disassemble but also reusable, significantly reducing costs and improving resource utilization. It also facilitates filter maintenance and overhaul.

[0029] Working principle: First, place the filter body 3 on the top of the two mounting plates 4 so that the two rear ear plates 5 fit with the two L-shaped limit plates 22, then put the two movable rings 9 and the spring 10 on the outside of the plug rod 7, and let the limit groove 13 on the lower movable ring 9 fit with the limit block 24, then pass the plug rod 7 through the two mounting holes 6, and press the plug rod 7 while rotating the L-shaped rotating plate 11, then release the plug rod 7 and it will be bounced up by the spring 10 and stuck into the inside of the groove 12, so that the filter body 3 is assembled. Compared with the traditional bolt installation, this installation method is more convenient to install in such a narrow position in the cabinet 1.

[0030] In addition, after the filter body 3 is installed, the connecting block 15 is pressed to fix the position of the cable assembly, the wires 23 are arranged and placed inside the U-shaped block 16, and then the U-shaped baffle 18 is pushed toward the inside of the U-shaped block 16. After the inclined surfaces of the two clamping blocks 20 contact the clamping hole 17, the entire clamping block 20 will shrink into the cavity 19. As the U-shaped baffle 18 continues to be pushed in, the clamping block 20 will be pushed out by the elastic force of the spring 21 and clamped into the inside of the clamping hole 17, completing the binding of the wires 23. When the wires 23 need to be checked, a screwdriver is inserted from the clamping hole 17 to push the clamping block 20 back into the cavity 19, and the U-shaped baffle 18 can be removed. Compared with traditional cable ties, disassembly is more convenient and can be reused without causing waste of resources.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-layer active filter, comprising a mounting cabinet (1) and a plurality of wiring assemblies, characterized in that: The outer side of the installation cabinet (1) is rotatably connected to a cabinet door (2), the inner side of the installation cabinet (1) is fixedly connected to multiple groups of installation plates (4), the number of each group of the installation plates (4) is two, and the top of each group of the installation plates (4) is provided with a filter body (3), the interior of the installation cabinet (1) is provided with multiple wires (23), the top of the rear side installation plate (4) is fixedly connected to two L-shaped limit plates (22), the outer sides of the filter body (3) are fixedly connected to two ear plates (5), the corresponding positions of the installation plate (4) and the ear plates (5) are provided with installation holes (6), and the outer side of the installation plate (4) is provided with two assembly components; the assembly components are used to install the filter body (3) on the top of the installation plate (4); The assembly component includes an insertion rod (7), which is slidably connected to the inside of the mounting hole (6), and a pull ring (8) is fixedly connected to the bottom of the insertion rod (7). Two movable rings (9) are sleeved on the outside of the insertion rod (7), and the adjacent sides of the two movable rings (9) are fixedly connected to a spring (10). The top of the mounting plate (4) is rotatably connected to two L-shaped rotating plates (11), and a groove (12) is provided at the bottom of the L-shaped rotating plate (11). The top of the ear plate (5) is fixedly connected to a limiting block (24), and a limiting groove (13) is provided on the outer side of the movable ring (9) on the lower side.

2. The multilayer active filter according to claim 1, wherein: The top of the insertion rod (7) is engaged with the inside of the groove (12), and the outer side of the movable ring (9) is in contact with the outer side of the ear plate (5).

3. The multilayer active filter according to claim 2, characterized in that: The outer side of the limiting block (24) is engaged with the inner side of the limiting groove (13), the bottom of the ear plate (5) is fitted with the top of the mounting plate (4), and the outer side of the rear ear plate (5) is slidably connected with the outer side of the L-shaped limiting plate (22).

4. The multilayer active filter according to claim 1, wherein: Two slide grooves (14) are provided on the top of the mounting plate (4), and the cable assembly is arranged on the outside of the mounting plate (4). The cable assembly includes a connecting block (15), and the outside of the connecting block (15) is slidably connected to the inside of the slide groove (14).

5. The multi-layer active filter according to claim 4, characterized in that: An anti-skid pad is provided on the top of the connection block (15), and the anti-skid pad is fitted with the bottom of the filter body (3); one end of the connection block (15) is fixedly connected to a U-shaped block (16).

6. The multi-layer active filter according to claim 5, characterized in that: Two clamping holes (17) are provided inside the U-shaped block (16), and a U-shaped baffle (18) is slidably connected to the inner side of the U-shaped block (16).

7. The multi-layer active filter according to claim 6, characterized in that: Two cavities (19) are provided inside the U-shaped baffle (18), and a clamping block (20) is slidably connected to the inner wall of the cavity (19), and the outer side of the clamping block (20) is clamped with the inner side of the clamping hole (17).

8. The multi-layer active filter according to claim 7, characterized in that: A second spring (21) is fixedly connected to one side of the clamping block (20), and one end of the second spring (21) is fixedly connected to the inner wall of the cavity (19).

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