Protective structure of passive filter

Abstract

The utility model relates to the technical field of passive filters, in particular to a protection structure of a passive filter, which comprises a passive filter body, fixing plates are fixedly mounted at the left end and the right end of the passive filter body, and through holes are correspondingly formed in the front ends and the rear ends of the two fixing plates; the front end and the rear end of the passive filter body are respectively provided with three groups of connectors. First fixing blocks are fixedly mounted at the front end and the rear end of the passive filter body; second movable grooves are formed in the two first fixing blocks correspondingly. In the use process of the passive filter, the connected wire can be clamped and fixed through the arrangement of the multiple groups of clamping assemblies, so that the air contact of the connecting wire can be avoided, and the normal use of the passive filter body is ensured; and through the arrangement of the driving assembly, the multiple sets of clamping assemblies can be conveniently driven to operate at the same time, the working efficiency of use is improved, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of passive filters, in particular to a protective structure of a passive filter. Background Art

[0002] The LLCL filter is a commonly used three-phase inductively coupled passive filter that is widely used in the power electronics industry. Its core structure is a series-mode parallel resonant circuit with many excellent characteristics, such as high performance, high power density, and high reliability. However, it also has some defects, such as detuning, resonance peaks, and ground current problems. During use, existing passive filters need to be connected to multiple sets of wires. The parts where the existing passive filters are connected to the wires are usually exposed. When the air humidity is high, it may affect the normal use of the passive filter. To this end, we have proposed a protective structure for the passive filter to solve the above problems. Utility Model Content

[0003] The purpose of the present invention is to provide a protective structure for a passive filter, so as to solve the problem in the background art that the portion of the existing passive filter connected to the wire is usually exposed to the outside and may be damaged by the influence of air humidity.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a protective structure of a passive filter comprises a passive filter body, wherein fixed plates are fixedly installed at both left and right ends of the passive filter body, and through holes are provided at both front and rear ends of two groups of fixed plates; three groups of connectors are provided at both front and rear ends of the passive filter body; first fixed blocks are fixedly installed at both front and rear ends of the passive filter body; second movable grooves are provided inside the two groups of first fixed blocks, and clamping components are provided inside the second movable grooves, and the clamping components are used to clamp and fix the connected wires; a second fixed block is fixedly installed on the upper side of the right end of the passive filter body, and a driving component is provided inside the second fixed block, and the driving component is used to simultaneously drive the two groups of clamping components to move.

[0005] Preferably, three groups of slots are provided on opposite sides of the two groups of the first fixing blocks, and the positions of the slots match the positions of the connectors.

[0006] Preferably, a first movable groove is provided on the upper side of the two groups of the first fixed blocks, a rotating plate is rotatably installed inside the first movable groove, and an L-shaped block is fixedly installed on the upper end of the rotating plate.

[0007] Preferably, magnetic blocks are provided at both left and right ends of the rotating plate, and magnetic blocks are provided at both left and right ends of the first movable groove.

[0008] Preferably, the clamping assembly includes a bidirectional screw, a screw sleeve and a curvature plate. Three groups of bidirectional screws are rotatably installed on the inner upper ends of the two groups of the second movable grooves. The three groups of bidirectional screws are fixedly connected. Two groups of screw sleeves are threadedly installed on the three groups of bidirectional screws. The lower sides of the two groups of screw sleeves are fixedly installed with curvature plates.

[0009] Preferably, the lower ends of the two groups of the first fixed blocks are provided with limiting grooves, and the lower ends of the six groups of the radian plates are fixedly installed with limiting blocks, and the limiting blocks slide inside the limiting grooves.

[0010] Preferably, rubber pads are glued inside the six groups of radian plates.

[0011] Preferably, the driving assembly includes a first bevel gear, a second bevel gear, a rotating rod and a rotating handle. The right ends of the two groups of bidirectional screws are fixedly installed with the first bevel gear, the rotating rod is rotatably installed inside the second fixed block, and the front and rear ends of the rotating rod are fixedly installed with the second bevel gear. The teeth of the second bevel gear are meshed with the teeth of the first bevel gear. A rotating handle is provided in the middle of the rotating rod, and the surface of the rotating handle is provided with anti-slip threads.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: during use, the present invention can clamp and fix the connected wires through the arrangement of multiple groups of clamping components, thereby preventing the wiring from being in contact with air and ensuring the normal use of the passive filter body; and the arrangement of the driving components facilitates the simultaneous driving of multiple groups of clamping components for operation, thereby improving the work efficiency and the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 It is a schematic front view of the structure of the utility model;

[0015] Figure 2 This is a schematic rear view of the structure of the present invention;

[0016] Figure 3 This is a schematic front view of the structure of the passive filter body of the utility model;

[0017] Figure 4 This is a schematic front cross-sectional view of the structure of the present invention;

[0018] Figure 5 For this utility model Figure 4 A partial enlarged schematic diagram of the middle A.

[0019] In the figure: 1. Passive filter body; 2. Fixing plate; 3. Connector; 4. First fixing block; 5. Slot; 6. First movable slot; 7. Rotating plate; 8. Second movable slot; 9. Bidirectional screw; 10. Screw sleeve; 11. Curved plate; 12. Limiting slot; 13. Limiting block; 14. Rubber pad; 15. Second fixing block; 16. First bevel gear; 17. Second bevel gear; 18. Rotating rod; 19. Turning handle. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-5 The utility model provides an embodiment: a protective structure of a passive filter, comprising a passive filter body 1, wherein fixed plates 2 are fixedly installed on both the left and right ends of the passive filter body 1, and through holes are provided on the front and rear ends of the two sets of fixed plates 2; three sets of connectors 3 are provided on the front and rear ends of the passive filter body 1; first fixed blocks 4 are fixedly installed on both the front and rear ends of the passive filter body 1; second movable grooves 8 are provided inside the two sets of first fixed blocks 4, and clamping components are provided inside the second movable grooves 8, and the clamping components are used to clamp and fix the connected wires; a second fixed block 15 is fixedly installed on the upper side of the right end of the passive filter body 1, and a driving component is provided inside the second fixed block 15, and the driving component is used to simultaneously drive the two sets of clamping components to move;

[0022] Furthermore, three groups of slots 5 are provided on opposite sides of the two groups of first fixing blocks 4, and the positions of the slots 5 are adapted to the positions of the connectors 3, such as Figure 1 As shown, the arrangement of the three groups of slots 5 facilitates the insertion of wires into the slots 5 and their connection with the connector 3 .

[0023] Furthermore, the upper sides of the two groups of first fixed blocks 4 are provided with first movable grooves 6, and a rotating plate 7 is rotatably installed inside the first movable groove 6, and an L-shaped block is fixedly installed on the upper end of the rotating plate 7, such as Figure 4 As shown, this arrangement makes it easy for the worker to turn over the rotating plate 7 and then connect the wires to the connector 3 .

[0024] Furthermore, the left and right ends of the rotating plate 7 are provided with magnetic blocks, and the left and right ends of the first movable groove 6 are provided with magnetic blocks, such as Figure 4 As shown, the magnetic block is provided to facilitate the positioning and fixing of the rotating plate 7 inside the first movable groove 6 .

[0025] Furthermore, the clamping assembly includes a bidirectional screw 9, a screw sleeve 10 and a radian plate 11. The upper ends of the two sets of second movable grooves 8 are rotatably mounted with three sets of bidirectional screws 9, the three sets of bidirectional screws 9 are fixedly connected, and two sets of screw sleeves 10 are threadedly mounted on the three sets of bidirectional screws 9. The lower sides of the two sets of screw sleeves 10 are fixedly mounted with radian plates 11, such as Figure 5 As shown, this arrangement allows the wires to be clamped and fixed through the two sets of curved plates 11 .

[0026] Furthermore, the lower ends of the two groups of first fixed blocks 4 are provided with limiting grooves 12, and the lower ends of the six groups of radian plates 11 are fixedly installed with limiting blocks 13, which slide inside the limiting grooves 12. Figure 5 As shown, this arrangement facilitates ensuring the stability of the camber plate 11 during movement.

[0027] Furthermore, the inside of each of the six groups of radian plates 11 is glued with rubber pads 14, such as Figure 5 The provision of multiple sets of rubber pads 14 facilitates increased sealing and effectively prevents water vapor from affecting the connector 3 .

[0028] Furthermore, the driving assembly includes a first bevel gear 16, a second bevel gear 17, a rotating rod 18 and a rotating handle 19. The right ends of the two sets of bidirectional screws 9 are fixedly mounted with the first bevel gear 16, the interior of the second fixed block 15 is rotatably mounted with the rotating rod 18, and the front and rear ends of the rotating rod 18 are fixedly mounted with the second bevel gear 17. The teeth of the second bevel gear 17 are meshed with the teeth of the first bevel gear 16. A rotating handle 19 is provided in the middle of the rotating rod 18, and the surface of the rotating handle 19 is provided with an anti-slip thread, such as Figure 5 As shown, multiple groups of clamping assemblies are driven to move simultaneously through the setting of the driving assembly.

[0029] Working principle: When the device is used, the staff fixes and installs the passive filter body 1, and then the staff flips the rotating plate 7. Then the staff inserts the wires to be connected into the inside of the slot 5 in turn, and connects the wires to the connector 3. The staff connects the six groups of connectors 3 with the six groups of wires, and then the staff flips the rotating plate 7. Then the staff grasps the turning handle 19 to rotate, and the turning handle 19 drives the turning rod 18 to rotate. The turning rod 18 simultaneously drives the front and rear two groups of second bevel gears 17 to rotate, and the rotation of the two groups of second bevel gears 17 simultaneously drives the two groups of first bevel gears 16 to rotate, and the first bevel gear 16 simultaneously drives the three groups of bidirectional screws 9 to rotate. The two groups of screw sleeves 10 are driven by the thread action of the bidirectional screw 9 to drive the two groups of radian plates 11 close to each other, and make the rubber pads 14 glued inside the two groups of radian plates 11 fit the outer wall of the wire, and the remaining multiple groups of radian plates 11 move together, thereby clamping and fixing the multiple groups of wires. The above is the entire working principle of the present utility model.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A passive filter protection structure, comprising a passive filter body (1), wherein both left and right ends of the passive filter body (1) are fixedly mounted with fixing plates (2), and both front and rear ends of the two sets of fixing plates (2) are provided with through holes; and both front and rear ends of the passive filter body (1) are provided with three sets of connectors (3); characterized in that: The passive filter body (1) is fixedly mounted with first fixing blocks (4) at both the front and rear ends; the two groups of the first fixing blocks (4) are provided with second movable grooves (8) inside, the second movable grooves (8) are provided with clamping components inside, and the clamping components are used to clamp and fix the connected wires; the passive filter body (1) is fixedly mounted with a second fixing block (15) on the upper side of the right end, and the second fixing block (15) is provided with a driving component inside, and the driving component is used to simultaneously drive the two groups of clamping components to move.

2. The protection structure of the passive filter according to claim 1, characterized in that: Three groups of slots (5) are provided on opposite sides of the two groups of the first fixing blocks (4), and the positions of the slots (5) are adapted to the positions of the connectors (3).

3. The protection structure of the passive filter according to claim 1, characterized in that: The upper sides of the two groups of the first fixed blocks (4) are both provided with a first movable groove (6), a rotating plate (7) is rotatably mounted inside the first movable groove (6), and an L-shaped block is fixedly mounted on the upper end of the rotating plate (7).

4. The protection structure of the passive filter according to claim 3, characterized in that: Magnetic blocks are provided at both left and right ends of the rotating plate (7), and magnetic blocks are provided at both left and right ends of the first movable groove (6).

5. The passive filter protection structure according to claim 1, characterized in that: The clamping assembly comprises a bidirectional screw (9), a screw sleeve (10) and a radian plate (11); three groups of bidirectional screws (9) are rotatably mounted on the inner upper ends of the two groups of the second movable grooves (8); the three groups of bidirectional screws (9) are fixedly connected; two groups of screw sleeves (10) are threadedly mounted on the three groups of bidirectional screws (9); and the radian plates (11) are fixedly mounted on the lower sides of the two groups of screw sleeves (10).

6. The passive filter protection structure according to claim 5, characterized in that: The lower ends of the two groups of the first fixed blocks (4) are provided with limiting grooves (12), and the lower ends of the six groups of the radian plates (11) are fixedly mounted with limiting blocks (13), and the limiting blocks (13) slide inside the limiting grooves (12).

7. The protection structure of the passive filter according to claim 5, characterized in that: The insides of the six groups of radian plates (11) are all glued with rubber pads (14).

8. The passive filter protection structure according to claim 5, characterized in that: The driving assembly comprises a first bevel gear (16), a second bevel gear (17), a rotating rod (18) and a turning handle (19); the first bevel gear (16) is fixedly mounted on the right ends of the two sets of bidirectional screws (9); the rotating rod (18) is rotatably mounted inside the second fixed block (15); the second bevel gear (17) is fixedly mounted on the front and rear ends of the rotating rod (18); the teeth of the second bevel gear (17) are meshed with the teeth of the first bevel gear (16); a turning handle (19) is arranged in the middle of the rotating rod (18); and the surface of the turning handle (19) is provided with anti-slip threads.

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