A high frequency filter

Abstract

This invention relates to a high-frequency filter, comprising a base plate, a detachable winding frame disposed above the base plate, and a protective cover disposed outside the winding frame. A coil body is disposed on the winding frame. Positioning grooves and slots are symmetrically arranged on both sides of the upper surface of the base plate and on the inner wall of the protective cover, respectively. Positioning blocks are symmetrically arranged on both sides of the winding frame. The bottom and outer side of each positioning block are respectively inserted into the corresponding positioning groove and slot. Locking arc blocks are symmetrically arranged on both sides of the upper surface of the base plate. A locking arc groove corresponding to the locking arc block is provided on the bottom surface of the protective cover. A mating pushing component is provided between the positioning blocks and the positioning grooves to lock and fix the base plate, winding frame, and protective cover. Compared with the prior art, this invention has the advantages of combining and sharing the mounting and disassembly components among the base plate, protective cover, and winding frame, achieving integrated and rapid mounting and disassembly.

Description

Technical Field

[0001] This invention relates to the field of filter technology, and in particular to a high-frequency filter. Background Technology

[0002] High-frequency common-mode filters typically use ferrite cores, are wound with two wires in parallel, and suppress interference sources for low differential-mode noise signals. They are difficult to deform in high-speed signals, have excellent noise suppression measures, and suppress both high common-mode noise and low differential-mode noise signals. The design of common-mode filters is relatively simple, including common-mode capacitors, unbalanced transformers, or common-mode inductors. In order to make high-frequency common-mode filters easier to install, facilitate subsequent disassembly and maintenance, and provide stable protection, adaptive modifications are needed.

[0003] Chinese patent CN217280388U discloses a long-life high-frequency common-mode filter, including a base plate, a support rod fixedly connected to the base plate, a fixed seat fixedly connected to the base plate, a limit rod slidably connected inside the fixed seat, a connecting seat slidably connected to the limit rod, the connecting seat contacting the base plate, a first spring provided on the outer side of the limit rod, a limit ring fixedly connected to the limit rod, the limit ring contacting the fixed seat, a winding frame contacting the fixed seat, the winding frame fixedly connected to the connecting seat, a coil provided on the winding frame, and a slider fixedly connected to the winding frame. A support plate is slidably connected to the slider. The support plate is fixedly connected to the base plate and contacts the winding skeleton. A positioning rod is slidably connected inside the support plate. A positioning ring is fixedly connected to the positioning rod and contacts the support plate. A connecting block is fixedly connected to the positioning rod. A second spring is fixedly connected to the connecting block and is fixedly connected to the support plate. The support plate and the connecting block are slidably connected. The positioning rod is slidably connected to the winding skeleton. A guide rod is slidably connected to the positioning rod and is slidably connected to the winding skeleton. A protective cover is fixedly connected to the guide rod and contacts the winding skeleton.

[0004] The above solution achieves quick installation and removal of the winding frame through the insertion and engagement of the limiting rod and the upper limit slot of the connecting seat. The protective cover protects the coils on the winding frame. However, the structure facilitating easy installation and removal of the winding frame is not effectively integrated with the protective cover; the installation and removal components for the winding frame and the protective cover are independent and scattered. Therefore, how to integrate and share the installation and removal components among the base plate, protective cover, and winding frame to achieve integrated and quick installation and removal is a problem that needs to be solved. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-frequency filter.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A high-frequency filter includes a base plate and a detachable winding frame disposed above the base plate. A protective cover is provided on the upper surface of the base plate and outside the winding frame. A coil body is disposed on the winding frame. Positioning grooves and slots are symmetrically provided on both sides of the upper surface of the base plate and the inner wall of the protective cover, respectively. Positioning blocks are symmetrically provided on both sides of the winding frame. The bottom and outer sides of the positioning blocks are respectively inserted into the corresponding positioning grooves and slots. Locking arc blocks are symmetrically provided on both sides of the upper surface of the base plate. A locking arc groove corresponding to the locking arc block is provided on the bottom surface of the protective cover. A mating pushing component is provided between the positioning blocks and the positioning grooves to allow the free end of the locking arc block to be inserted into the locking arc groove and to lock and fix the base plate, winding frame, and protective cover.

[0008] Furthermore, the upper surface of the base plate is symmetrically provided with wire holes on both sides; the bottom end face of the winding skeleton is provided with lead wires passing through the wire holes on both sides through the electrode part; a padding layer is also provided between the upper surface of the base plate and the winding skeleton for sealing the gap.

[0009] Furthermore, the winding skeleton is a U-shaped winding skeleton.

[0010] Furthermore, a rubber ring is bonded to the outer side of the locking arc block to seal and prevent air leakage.

[0011] Furthermore, the base plate is provided with an arc-shaped sliding groove, and an arc-shaped spring sleeve is provided at the bottom end of the arc-shaped sliding groove; the locking arc block is slidably inserted into the arc-shaped sliding groove and slidably sleeved on the arc-shaped spring sleeve.

[0012] Furthermore, the cooperating pushing assembly includes a telescopic airbag and an air guide channel disposed on the bottom end face of the positioning groove; the air inlet end of the air guide channel is connected to the telescopic airbag, and the air outlet end is connected to the arc-shaped sliding groove; the positioning block has a movable cavity inside; a return spring sleeve rod slides through the bottom end face of the movable cavity; a pressure plate is disposed at the bottom end of the return spring sleeve rod; the pressure plate and the top of the telescopic airbag are cooperatingly connected.

[0013] Furthermore, the telescopic airbag is a corrugated rubber airbag.

[0014] Furthermore, the telescopic airbag is equipped with an inflation valve head for replenishing gas into the telescopic airbag.

[0015] Furthermore, the outer walls on both sides of the protective cover are provided with grooves; the inner walls of the grooves are provided with two fixing grooves; the bottom of the inner walls of the grooves is provided with a movable hole that communicates with the slot; a top plate slides through the movable hole vertically; the lower part of the top plate slides through the movable cavity; an elastic isolation sleeve is provided inside the movable cavity, which is used to compress the telescopic airbag through the return spring sleeve rod and the pressure plate when it extends and deforms downward.

[0016] Furthermore, a fixing hole is provided on the upper side wall of the top plate; a fixing spring sleeve rod slides through the fixing hole; when the free end of the fixing spring sleeve rod is respectively inserted into the fixing groove at the upper and lower ends of the inner wall of the groove, the telescopic airbag is in an inflated state and a deflated state respectively.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] I. This invention fixes the top plate at different heights within the groove, thereby allowing the telescopic airbag to be in an inflated or deflated state. This indirectly causes the locking arc block to be inserted into or removed from the locking arc groove, enabling the mounting and disassembly components of the base plate, protective cover, and winding frame to be used together, achieving integrated and rapid mounting and disassembly.

[0019] Second, this invention achieves good sealing by filling the gaps between various gap components with sealant, grease, a liner, and a rubber ring, forming an airtight space, preventing air leakage, and making the fixing and locking more secure. Attached Figure Description

[0020] Figure 1 This is a schematic cross-sectional view of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the positioning card block area of ​​the present invention, where A represents the positioning card block area;

[0022] Figure 3 This is an enlarged schematic diagram of region A in this invention;

[0023] Figure 4 This is a schematic diagram of the locking arc block and locking arc groove in the locked state of the present invention. B represents the top plate area of ​​the positioning block.

[0024] Figure 5 This is an enlarged schematic diagram of point B in the present invention;

[0025] Figure 6 This is a partial cross-sectional view of the positioning block and positioning groove in the engagement state of the present invention, where C represents the area of ​​the fixed spring sleeve rod and D represents the area of ​​the locking arc groove.

[0026] Figure 7 This is an enlarged schematic diagram of point C in the present invention;

[0027] Figure 8 This is an enlarged schematic diagram of point D in the present invention.

[0028] The labels in the diagram indicate:

[0029] 1. Base plate, 2. Winding frame, 3. Protective cover, 4. Coil body, 5. Positioning groove, 6. Slot, 7. Positioning block, 8. Locking arc block, 9. Locking arc groove, 10. Wire hole, 11. Lead wire, 12. Padding layer, 13. Arc-shaped slide groove, 14. Arc-shaped spring sleeve rod, 15. Telescopic airbag, 16. Air duct, 17. Reset spring sleeve rod, 18. Pressure plate, 19. Groove, 20. Fixing groove, 21. Movable hole, 22. Top plate, 23. Elastic isolation sleeve, 24. Fixing hole, 25. Fixing spring sleeve rod, 101. Movable cavity. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0031] Example

[0032] like Figures 1-8 As shown, a high-frequency filter includes a base plate 1 and a detachable U-shaped winding frame 2 disposed above the base plate 1. A protective cover 3 is provided on the upper surface of the base plate 1, protecting the winding frame 2 from the external environment. A coil body 4 is disposed on the winding frame 3. Positioning grooves 5 and slots 6 are symmetrically provided on both sides of the upper surface of the base plate 1 and the inner wall of the protective cover 3, respectively. Positioning blocks 7 are symmetrically provided on both sides of the winding frame 2, and are installed on both sides of the bottom surface of the winding frame 2 by screwing or snapping. The bottom and outer sides of the positioning blocks 7 are respectively fitted into... The winding frame 2 is pre-fixed by positioning blocks 7 in the corresponding positioning slots 5 and slots 6, respectively, through the positioning blocks 7. Locking arc blocks 8 are symmetrically arranged on both sides of the upper surface of the base plate 1, and the locking arc blocks 8 rotate around their center. The bottom surface of the protective cover 3 is provided with locking arc grooves 9 that correspond to and cooperate with the locking arc blocks 8, and the rotation trajectory of the locking arc blocks 8 coincides with that of the locking arc grooves 9. A cooperating pushing component is provided between the positioning blocks 7 and the positioning slots 5, which is used to insert the free end of the locking arc blocks 8 into the locking arc grooves 9 and lock the base plate 1, the winding frame 2, and the protective cover 3.

[0033] The base plate 1 has symmetrical wire holes 10 on both sides of its upper end face; the winding skeleton 2 has lead wires 11 passing through the wire holes 10 on both sides of its bottom end face via electrode parts, and the gap between the lead wires 11 and the wire holes 10 is filled with sealant to ensure the airtightness of the base plate 1; a padding layer 12 is also provided between the upper end face of the base plate 1 and the winding skeleton 2 for gap sealing.

[0034] The base plate 1 is provided with an arc-shaped slide groove 13, and an arc-shaped spring sleeve rod 14 is provided at the bottom end of the arc-shaped slide groove 13; the locking arc block 8 is slidably inserted into the arc-shaped slide groove 13 and slidably sleeved on the arc-shaped spring sleeve rod 14. The arc-shaped spring sleeve rod 14 generates a spring force on the locking arc block 8 toward the inside of the arc-shaped slide groove 13, so that the locking arc block 8 can be subjected to a spring force in the direction of moving out of the locking arc groove 9.

[0035] The aforementioned moving assembly includes a telescopic airbag 15 and an air duct 16 disposed on the bottom surface of the positioning groove 5; the telescopic airbag 15 is a corrugated rubber airbag with telescopic properties; the air inlet end of the air duct 16 is connected to the telescopic airbag 15, and the exhaust end is connected to the arc-shaped sliding groove 13; the positioning block 7 has a movable cavity 101 inside, and the upper and lower ends of the inner wall of the movable cavity 101 are provided with through holes, which are respectively connected to the slot 6 and the positioning groove 5; a return spring sleeve 17 slides through the bottom surface of the movable cavity 101; a pressure plate 18 is provided at the bottom end of the return spring sleeve 17; the pressure plate 18 and the top of the telescopic airbag 15 are connected in a mating manner; the return spring sleeve 17 generates an upward spring restoring force on the pressure plate 18, and the pressure plate 18 can drive the telescopic airbag 15 to extend upward when not subjected to external downward pressure, thereby making the telescopic airbag 15 in an inhalation state.

[0036] The protective cover 3 has grooves 19 on both sides of its outer sidewalls; two fixing grooves 20 are provided on the inner sidewalls of the grooves 19; the bottom of the inner sidewall of the grooves 19 has a movable hole 21 that communicates with the slot 6; a top plate 22 slides vertically through the movable hole 21, and the bottom of the top plate 22 has an arc-shaped plate structure; the lower part of the top plate 22 slides through the movable cavity 101; an elastic isolation sleeve 23 is provided inside the movable cavity 101, which can airtightly separate the top plate 22 and the return spring sleeve 17; when the top plate 22 moves downward and causes the elastic isolation sleeve 23 to extend and deform downward, the elastic isolation sleeve 23 compresses the telescopic airbag 15 through the return spring sleeve 17 and the pressure plate 18. The gas inside the telescopic airbag 15 is discharged into the arc-shaped sliding groove 13 through the air guide 16, thereby pushing the locking arc block 8 to lock into the locking arc groove 9. The locking arc groove 9 has an arc-shaped structure, which can restrict the misalignment and slippage between the floor 1 and the protective cover 3, as well as the vertical loosening, and has a good anti-loosening function. A rubber ring is bonded to the outer part of the locking arc block 8, and the rubber ring and the inner wall of the arc-shaped sliding groove 13 are sealed and slidably fitted, so that the arc-shaped sliding groove 13 corresponding to the inner end face of the locking arc block 8 is an airtight space with a low probability of air leakage. At the same time, sealing grease is injected between the outer port of the arc-shaped sliding groove 13 and the locking arc block 8 for airtight auxiliary sealing. The telescopic airbag 15 is provided with an inflation valve head for replenishing gas into the telescopic airbag 15.

[0037] The top plate 22 has a fixing hole 24 on its upper side wall; a fixing spring sleeve 25 slides through the fixing hole 24; when the free end of the fixing spring sleeve 25 is inserted into the fixing groove 20 at the upper and lower ends of the inner wall of the groove 19, the telescopic airbag 15 is in an inflated state and a deflated state, respectively.

[0038] The working principle of this invention is as follows: In the assembly of the high-frequency filter, during the installation of the winding frame 2, the operator first installs the winding frame 2 on the upper surface of the base plate 1 and inserts the positioning block 7 into the corresponding positioning groove 5. At the same time, the pressure plate 18 and the top of the telescopic airbag 15 are connected by screws, so that the padding layer 12 fills the gap between the base plate 1 and the winding frame 2, and the lead wire 11 passes through the wire hole 10. The gap between the lead wire 11 and the wire hole 10 is filled and sealed. Finally, the protective cover 3 is placed on the outside of the winding frame 2, and the outer part of the positioning block 7 and the slot 6 are engaged to ensure that the top plate 22 is inserted into the through hole at the upper end of the movable cavity 101, and the top plate 22 causes the elastic isolation sleeve 23 to be compressed and extended. Further, the fixing spring sleeve rod 25 is moved out of the fixing groove 20 at the upper end of the groove 19 and the top plate 22 is pushed down, so that the top plate 22 is moved from the upper end of the groove 19 to the upper end of the fixing groove 20. Figure 2 The status shown has changed to Figure 4In the indicated state, the top plate 22 is isolated by the elastic isolation sleeve 23, and the pressure plate 18 on the reset spring sleeve 17 compresses the telescopic airbag 15. The air inside the telescopic airbag 15 is discharged into the arc-shaped slide groove 13 through the air guide 16, and pushes the locking arc block 8 into the corresponding locking arc groove 9 by overcoming the arc-shaped spring sleeve 14. This achieves integrated and quick installation and removal of the base plate 1, the winding frame 2, and the protective cover 3. When disassembly is required, simply pull the fixing spring sleeve 25 outward and move the top plate 22 upward. The upward extension of the telescopic airbag 15 draws in the gas inside the arc-shaped slide groove 13, thereby moving the locking arc block 8 out from the end of the locking arc groove 9. This facilitates the quick disassembly of the base plate 1, the winding frame 2, and the protective cover 3, allowing the installation and removal parts of the base plate 1, the protective cover 3, and the winding frame 2 to be combined and shared, achieving integrated and quick installation and removal.

[0039] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A high-frequency filter, comprising a base plate (1) and a detachable winding frame (2) disposed above the base plate (1); a protective cover (3) disposed outside the winding frame (2) is provided on the upper surface of the base plate (1); a coil body (4) is disposed on the winding frame (2), characterized in that, The base plate (1) has symmetrically arranged positioning grooves (5) and slots (6) on both sides of the upper end face and the inner side wall of the protective cover (3); the winding skeleton (2) has symmetrically arranged positioning blocks (7) on both sides; the bottom and outer side of the positioning blocks (7) are respectively inserted into the corresponding positioning grooves (5) and slots (6); the base plate (1) has symmetrically arranged locking arc blocks (8) on both sides of the upper end face; the protective cover (3) has a locking arc groove (9) that corresponds to the locking arc block (8) on the bottom end face; a matching pushing component is provided between the positioning blocks (7) and the positioning grooves (5) to allow the free end of the locking arc block (8) to be inserted into the locking arc groove (9) and to lock and fix the base plate (1), the winding skeleton (2) and the protective cover (3); The base plate (1) is provided with an arc-shaped sliding groove (13), and an arc-shaped spring sleeve rod (14) is provided at the bottom end of the arc-shaped sliding groove (13); the locking arc block (8) is slidably inserted into the arc-shaped sliding groove (13) and slidably sleeved on the arc-shaped spring sleeve rod (14); The aforementioned moving assembly includes a telescopic airbag (15) and an air duct (16) disposed on the bottom surface of the positioning groove (5); the air inlet of the air duct (16) is connected to the telescopic airbag (15), and the exhaust end is connected to the arc-shaped sliding groove (13); the positioning block (7) is provided with a movable cavity (101); a return spring sleeve rod (17) slides through the bottom surface of the movable cavity (101); a pressure plate (18) is provided at the bottom end of the return spring sleeve rod (17); the pressure plate (18) and the top of the telescopic airbag (15) are connected in a cooperative manner; The protective cover (3) has grooves (19) on both sides of the outer sidewalls; the grooves (19) have two fixing grooves (20) on the inner sidewalls; the grooves (19) have movable holes (21) at the bottom end of the inner sidewalls that are connected to the slots (6); the movable holes (21) have a top plate (22) that slides vertically through them; the bottom of the top plate (22) slides through the movable cavity (101); the movable cavity (101) has an elastic isolation sleeve (23) inside, which is used to squeeze the telescopic airbag (15) by the reset spring sleeve rod (17) and the pressure plate (18) when it extends and deforms downward.

2. A high-frequency filter according to claim 1, characterized in that, The base plate (1) has symmetrical wire holes (10) on both sides of its upper end face; the winding skeleton (2) has lead wires (11) passing through the wire holes (10) on both sides of its bottom end face via the electrode part; a padding layer (12) is also provided between the upper end face of the base plate (1) and the winding skeleton (2) for sealing the gap.

3. A high-frequency filter according to claim 1, characterized in that, The winding skeleton (2) is a U-shaped winding skeleton.

4. A high-frequency filter according to claim 1, characterized in that, The outer side of the locking arc block (8) is bonded with a rubber ring for sealing and preventing air leakage.

5. A high-frequency filter according to claim 1, characterized in that, The telescopic airbag (15) is a corrugated rubber airbag.

6. A high-frequency filter according to claim 1, characterized in that, The telescopic airbag (15) is provided with an inflation valve head for replenishing gas into the telescopic airbag (15).

7. A high-frequency filter according to claim 1, characterized in that, The top plate (22) has a fixing hole (24) on its upper side wall; a fixing spring sleeve (25) slides through the fixing hole (24); when the free end of the fixing spring sleeve (25) is inserted into the fixing groove (20) at the upper and lower ends of the inner wall of the groove (19), the telescopic airbag (15) is in an inflated state and a deflated state, respectively.

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