Bidirectional coupling filter

Abstract

The utility model belongs to the technical field of filters, and particularly relates to a bi-directional coupling filter which comprises a base. A plurality of fixing lugs are uniformly and fixedly connected to the side wall of the base; the middle part of the base is rotationally connected with a bidirectional lead screw; through the above structure, the base, the fixing lugs and the bidirectional lead screw are arranged, the first sliding blocks and the clamping plates are matched, the base can be fixed to an equipment box or a frame in advance, then the filter body is clamped, fixed and disassembled through the clamping plates, and the convenience when the filter body is fixedly installed can be improved; the utility model relates to a filter, which aims to reduce the situation that a filter body is difficult to disassemble during maintenance or replacement due to deformation of a plate of the filter body and rusting and corrosion of bolts caused by extrusion when the filter body is directly fixed by using the bolts. And the clamping plates can be moved by different distances to adapt to filter bodies of different sizes, so that the convenience in use is improved.

Description

Technical Field

[0001] This invention belongs to the field of filter technology, specifically a dual directional coupling filter. Background Technology

[0002] A dual directional coupling filter is a filter based on a directional coupler. Its basic principle is to use the coupling characteristics of the directional coupler to split the input signal into two paths: one is a direct signal and the other is a coupled signal. The coupled signal is filtered and then combined with the direct signal to achieve the filtering function.

[0003] Existing filters typically use bolt-fixing for installation. Bolt fixing usually involves a metal plate with mounting holes at the bottom of the filter. The filter is fixed inside the equipment box by bolts passing through the mounting holes. During long-term use and observation, it has been found that the plate at the bottom of the filter is usually quite thin when using bolt fixing, which makes the bolts prone to deformation under pressure. In addition, the bolts will rust due to oxidation. When it is necessary to disassemble, replace or repair the filter, the plate and the rusted bolts will make it difficult to remove the filter.

[0004] Therefore, this utility model provides a dual directional coupling filter. Utility Model Content

[0005] To overcome the shortcomings of existing technologies and solve at least one of the problems mentioned in the background art, a dual directional coupling filter is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A dual-directional coupling filter of this utility model includes a base; multiple fixing ears are uniformly fixed to the side wall of the base; a bidirectional lead screw is rotatably connected to the middle of the base; a pair of first sliders are symmetrically threaded to the middle of the bidirectional lead screw; the first sliders slide in the middle of the base; a clamping plate is fixed to the top of the first sliders; and a filter body is installed on the top of the base. Through the above structure, by setting the base, fixing ears, and bidirectional lead screw, and cooperating with the first sliders and clamping plate, the base can be pre-fixed to the equipment box or frame, and then the filter body can be clamped, fixed, and disassembled by the clamping plate. This can improve the convenience of fixing and installing the filter body, and reduce the use of bolts to directly fix the filter body. Due to compression, the filter body plate may deform and the bolts may rust and corrode, making it difficult to disassemble the filter body during maintenance or replacement. At the same time, when the size of the filter body is different, the clamping plate can be moved a different distance to adapt to the filter body of different sizes, thereby improving the convenience of use.

[0007] Preferably, the base has multiple positioning holes on its top; the multiple positioning holes are perpendicular to each other; a protective cover is installed on the top of the base; multiple fixing rods are fixed to the bottom of the protective cover; the fixing rods are correspondingly arranged with the positioning holes; multiple spring plates are fixed to the side walls of the fixing rods; through the above structure, the positioning holes and the protective cover, together with the fixing rods and spring plates, can facilitate protection of the filter body from the top. When an external impact occurs, the impacting object will come into contact with the protective cover, thereby reducing the possibility of direct external impact on the filter body and causing damage to the filter body, thus improving safety during use.

[0008] Preferably, a pair of fixing frames are fixedly connected to the top of the protective cover; a spring pin is installed on the top of the fixing frame; a fixing bracket is slidably fitted inside the fixing frame; multiple limiting holes are opened in the middle of the fixing bracket; the limiting holes are correspondingly arranged with the spring pin; a pressure block is fixedly connected to the end of the fixing bracket; with the above structure, the fixing frame, spring pin and fixing bracket, together with the limiting holes and pressure block, can be fixed from the lateral position of the filter body, and the longitudinal position of the filter body can be fixed with the clamping plate, so as to improve the stability of the position of the filter body, and at the same time, it can adapt to filter bodies of different sizes, so as to improve the applicability during use.

[0009] Preferably, the side wall of the fixing frame is provided with a sliding groove; a second slider is slidably connected in the sliding groove; a pair of pressure rods are symmetrically fixed to the side wall of the second slider; a screw hole is provided in the middle of the second slider; a screw is threaded into the screw hole; with the above structure, the sliding groove, the second slider and the pressure rod, together with the screw hole and the screw, can facilitate pressing the connection point of the filter body by the pressure rod after the wiring is completed, thereby reducing the possibility of the connection wires loosening and falling off, and improving the stability of the wire connection.

[0010] Preferably, the top of the protective cover is threaded with a screw; a pressure plate is fixed to the end of the screw; with the above structure, the screw and pressure plate can be fixed to the filter body from the top, and with the lateral and longitudinal fixation of the clamping plate and pressure block, the position of the filter body can be more stable under the cooperation of the three directions.

[0011] Preferably, the base has multiple through slots in the middle; the multiple through slots are evenly distributed in the middle of the base; when the filter body is running, it will generate heat, and at this time, the heat at the contact position between the filter body and the base will diffuse outward from the through slots. Through the above structure, the through slots can improve the heat dissipation effect at the contact position between the filter body and the base, so as to reduce the situation of heat accumulation caused by close contact.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. The dual-directional coupling filter of this utility model, by setting a base, fixing ears and bidirectional lead screw, and cooperating with a first slider and clamping plate, can improve the convenience of fixing and installing the filter body by pre-fixing the base to the equipment box or frame, and then clamping and fixing the filter body with the clamping plate. This reduces the use of bolts to directly fix the filter body, which can cause deformation of the filter body plate due to compression and rust and corrosion of the bolts, making it difficult to disassemble the filter body during maintenance or replacement. At the same time, when the size of the filter body is different, the clamping plate can move different distances to adapt to the filter body of different sizes, thereby improving the convenience of use.

[0014] 2. The dual directional coupling filter described in this utility model, by setting positioning holes and protective covers, and cooperating with fixing rods and spring plates, can easily protect the filter body from the top. When an external impact occurs, the impacting object will come into contact with the protective cover, thereby reducing the possibility of direct external impact on the filter body and causing damage to the filter body, thus improving the safety during use. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a schematic diagram of the base structure in this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the protective cover in this utility model;

[0019] Figure 4 This is a structural schematic diagram of the fixing frame in this utility model.

[0020] Legend:

[0021] 1. Base; 11. Fixing ear; 12. Bidirectional lead screw; 13. First slider; 14. Clamping plate; 15. Filter body; 2. Positioning hole; 21. Protective cover; 22. Fixing rod; 23. Spring plate; 3. Fixing frame; 31. Spring pin; 32. Fixing bracket; 33. Limiting hole; 34. Pressure block; 4. Slide groove; 41. Second slider; 42. Pressure rod; 43. Screw hole; 44. Screw; 5. Screw; 51. Pressure plate; 6. Through groove; 7. Rubber pad. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Specific implementation examples are given below.

[0024] like Figures 1 to 2 As shown in the embodiment of this utility model, a dual-directional coupling filter includes a base 1; multiple fixing ears 11 are uniformly fixed to the side wall of the base 1; a bidirectional lead screw 12 is rotatably connected to the middle of the base 1; a pair of first sliders 13 are symmetrically threaded to the middle of the bidirectional lead screw 12; the first sliders 13 slide in the middle of the base 1; a clamping plate 14 is fixed to the top of the first sliders 13; a filter body 15 is installed on the top of the base 1; during operation, fixing bolts are passed through the holes on the fixing ears 11, and then the base 1 is fixed to the equipment box or mounting frame with bolts. Then, the filter body 15 is placed between the pair of clamping plates 14, and the bidirectional lead screw 12 is rotated to drive the pair of first sliders 13 to move relative to the clamping plates 14. When the bidirectional lead screw 12 rotates in the forward direction, the clamping plates 14 will move closer to each other, thereby clamping and fixing the filter body 15 placed between them, thus fixing the filter body 15 to the base. 1. At the top, when it is necessary to disassemble the filter body 15, the clamping plates 14 can be moved away from each other by reversing the bidirectional lead screw 12, thereby releasing the clamping of the filter body 15 and making it easy to remove the filter body 15. With the above structure, the base 1, the fixing ear 11 and the bidirectional lead screw 12 are set up, and the first slider 13 and the clamping plate 14 are used together. The base 1 can be pre-fixed on the equipment box or frame, and the filter body 15 can be clamped, fixed and disassembled by the clamping plate 14. This can improve the convenience of fixing and installing the filter body 15, and reduce the use of bolts to directly fix the filter body 15. Due to compression, the filter body 15 plate is deformed and the bolts are rusted and corroded, which makes it difficult to disassemble the filter body 15 during maintenance or replacement. At the same time, when the size of the filter body 15 is different, the clamping plate 14 can be moved a different distance to adapt to the filter body 15 of different sizes, thereby improving the convenience of use.

[0025] like Figure 2 and Figure 3As shown, the base 1 has multiple positioning holes 2 on its top; the multiple positioning holes 2 are perpendicular to each other; a protective cover 21 is installed on the top of the base 1; multiple fixing rods 22 are fixedly connected to the bottom of the protective cover 21; the fixing rods 22 are correspondingly arranged with the positioning holes 2; multiple spring plates 23 are fixedly connected to the side walls of the fixing rods 22; during operation, after the filter body 15 is fixed, the fixing rods 22 at the bottom of the protective cover 21 are aligned with the positioning holes 2 on the top of the base 1, and then the top of the protective cover 21 is pressed to insert the fixing rods 22 into the positioning holes 2. At this time, the spring plates 23 will deform and press against the inner wall of the positioning holes 2, thus fixing the protective cover 21 to the base. At the top of the base 1, the protective cover 21 will cover the filter body 15 from above. When it is necessary to remove the protective cover 21, it can be pulled away from the base 1 to make the fixing rod 22 and the spring plate 23 disengage from the positioning hole 2, and the protective cover 21 can be removed. With the above structure, the positioning hole 2 and the protective cover 21 are set, and the fixing rod 22 and the spring plate 23 are used to protect the filter body 15 from the top. When an external impact occurs, the impacting object will come into contact with the protective cover 21 to reduce the direct impact of the external impact on the filter body 15 and prevent damage to the filter body 15, thereby improving the safety during use.

[0026] like Figure 1 and Figure 4 As shown, a pair of fixing frames 3 are fixedly connected to the top of the protective cover 21; a spring pin 31 is installed on the top of the fixing frame 3; a fixing bracket 32 ​​is slidably fitted inside the fixing frame 3; multiple limiting holes 33 are opened in the middle of the fixing bracket 32; the limiting holes 33 are correspondingly arranged with the spring pin 31; a pressure block 34 is fixedly connected to the end of the fixing bracket 32; during operation, after the filter body 15 is fixed between the clamping plates 14, the spring pin 31 is first pulled upward, then the fixing bracket 32 ​​is inserted into the fixing frame 3, and the pressure block 34 is made to contact the surface of the filter body 15, and then the spring pin 31 is released to make it spring back and insert into the limiting hole 33 below. At this time, both sides The pressure block 34 can clamp the filter body 15 laterally. When the lateral dimensions of the filter body 15 are different, the position of the limiting hole 33 and the spring pin 31 can be adjusted by sliding the length of the fixing bracket 32 ​​within the fixing frame 3. This can accommodate filter bodies 15 with different lateral dimensions. Through the above structure, the fixing frame 3, the spring pin 31, and the fixing bracket 32 ​​are set. With the limiting hole 33 and the pressure block 34, the filter body 15 can be fixed in the lateral position. With the clamping plate 14, the filter body 15 is fixed in the longitudinal direction to improve the stability of the position of the filter body 15. At the same time, it can accommodate filter bodies 15 of different sizes to improve the applicability during use.

[0027] like Figure 4As shown, the side wall of the fixing frame 32 has a sliding groove 4; a second slider 41 is slidably connected in the sliding groove 4; a pair of pressure rods 42 are symmetrically fixed to the side wall of the second slider 41; a screw hole 43 is opened in the middle of the second slider 41; a screw 44 is threaded into the screw hole 43; during operation, when the pressure block 34 is fixed on the surface of the filter body 15, the screw hole 43 can be slidably opened to make the pressure rod 42 contact the wiring of the filter body 15, and then the screw 44 is installed into the screw hole 43. When the end of the screw 44 contacts the bottom of the sliding groove 4, the second slider 41 and the pressure rod 42 can be connected in a sliding groove 43. With the position of rod 42 fixed, the pressure rod 42 can press down the wiring of the filter body 15. When the height of the wiring of the filter body 15 is different, the height of the pressure rod 42 can be adjusted by moving the height of the second slider 41 in the groove 4 to adapt to the wiring of different heights. With the above structure, the groove 4, the second slider 41 and the pressure rod 42 are set, and the screw hole 43 and the screw 44 are matched. After the wiring is completed, the wiring of the filter body 15 can be pressed down by the pressure rod 42, thereby reducing the situation of loosening and falling off of the connecting wire and improving the stability of the wire connection.

[0028] like Figure 1 and Figure 3 As shown, the top of the protective cover 21 is threaded with a screw 5; a pressure plate 51 is fixed to the end of the screw 5; during operation, when the screw 5 is rotated in the forward direction, it will drive the pressure plate 51 to move towards the top of the filter body 15. When the pressure plate 51 contacts the top of the filter body 15, it can press the filter body 15 down from above. When the screw 5 is rotated in the reverse direction, it can drive the pressure plate 51 away from the top of the filter body 15. With the above structure, the screw 5 and the pressure plate 51 can be fixed to the filter body 15 from the top. With the lateral and longitudinal fixation of the clamping plate 14 and the pressure block 34, the position of the filter body 15 can be more stable under the cooperation of the three directions.

[0029] like Figure 2 As shown, the base 1 has multiple through slots 6 in the middle; the multiple through slots 6 are evenly distributed in the middle of the base 1; when the filter body 15 is running, it will generate heat. At this time, the heat at the contact position between the filter body 15 and the base 1 will diffuse outward from the through slots 6. Through the above structure, the through slots 6 can improve the heat dissipation effect at the contact position between the filter body 15 and the base 1, so as to reduce the situation of heat accumulation caused by close contact.

[0030] like Figure 2As shown, a rubber pad 7 is fixed to the side wall of the clamping plate 14. During operation, when the clamping plate 14 clamps and fixes the filter body 15, the rubber pad 7 will contact the surface of the filter body 15. Through the above structure, the rubber pad 7 is connected to the clamping plate 14, which can increase the friction between the clamping plate 14 and the filter body 15, thereby reducing the situation of position slippage between the filter body 15 and the clamping plate 14.

[0031] Working principle: The fixing bolts are passed through the holes in the fixing ears 11, and the base 1 is then fixed to the equipment box or mounting frame using the bolts. The filter body 15 is then placed between a pair of clamping plates 14. Rotating the bidirectional lead screw 12 causes a pair of first sliders 13 to move relative to the clamping plates 14. When the bidirectional lead screw 12 rotates forward, the clamping plates 14 move closer together, thus clamping and fixing the filter body 15 between them. This secures the filter body 15 to the top of the base 1. To remove the filter body 15, the bidirectional lead screw 12 is reversed to move the clamping plates 14 away from each other, releasing the clamping and allowing the filter body 15 to be easily removed. After the main body 15 is fixed, align the fixing rod 22 at the bottom of the protective cover 21 with the positioning hole 2 at the top of the base 1, and then press the top of the protective cover 21 so that the fixing rod 22 is inserted into the positioning hole 2. At this time, the spring plate 23 will deform and press against the inner wall of the positioning hole 2. At this time, the protective cover 21 can be fixed to the top of the base 1. The protective cover 21 will cover the filter body 15 from above. When it is necessary to remove the protective cover 21, it can be pulled away from the base 1 to disengage the fixing rod 22 and the spring plate 23 from the positioning hole 2, and the protective cover 21 can be removed. After the filter body 15 is fixed between the clamping plates 14, first pull the spring pin 31 to move it upward, and then fix the bracket. Insert the spring pin 32 into the fixing frame 3 and make the pressure block 34 contact the surface of the filter body 15. Then release the spring pin 31 to allow it to spring back and insert it into the lower limiting hole 33. At this time, the pressure blocks 34 on both sides can clamp the filter body 15 laterally. When the lateral dimensions of the filter body 15 are different, the position of the limiting hole 33 and the spring pin 31 can be adjusted by sliding the length of the fixing bracket 32 ​​in the fixing frame 3 to accommodate filter bodies 15 with different lateral dimensions. When the pressure block 34 is fixed on the surface of the filter body 15, the screw hole 43 can be slid to make the pressure rod 42 contact the wiring of the filter body 15. Then, the screw 44 is installed into the screw hole 43. When the end of the screw 44 contacts the bottom of the slide groove 4, it can be... The positions of the second slider 41 and the pressure rod 42 are fixed. At this time, the pressure rod 42 can press down the wiring of the filter body 15. When the height of the wiring of the filter body 15 is different, the height of the pressure rod 42 can be adjusted by moving the height of the second slider 41 in the slide groove 4 to adapt to the wiring of different heights. When the screw 5 is rotated in the forward direction, it will drive the pressure plate 51 to move towards the top of the filter body 15. When the pressure plate 51 contacts the top of the filter body 15, it can press down on the filter body 15 from above. When the screw 5 is rotated in the reverse direction, it can drive the pressure plate 51 away from the top of the filter body 15. When the clamping plate 14 clamps and fixes the filter body 15, the rubber pad 7 will contact the surface of the filter body 15.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dual directional coupling filter, comprising a base (1); characterized in that: The base (1) has multiple fixed ears (11) evenly fixed to its side wall; a bidirectional lead screw (12) is rotatably connected to the middle of the base (1); a pair of first sliders (13) are symmetrically threaded to the middle of the bidirectional lead screw (12); the first sliders (13) slide in the middle of the base (1); a clamp (14) is fixed to the top of the first sliders (13); and a filter body (15) is installed on the top of the base (1).

2. The dual directional coupling filter according to claim 1, characterized in that: The base (1) has multiple positioning holes (2) on its top; the multiple positioning holes (2) are perpendicular to each other; a protective cover (21) is installed on the top of the base (1); multiple fixing rods (22) are fixed to the bottom of the protective cover (21); the fixing rods (22) are arranged corresponding to the positioning holes (2); multiple spring plates (23) are fixed to the side wall of the fixing rods (22).

3. A dual directional coupling filter according to claim 2, characterized in that: The protective cover (21) is fixedly connected to a pair of fixed frames (3) at the top; a spring pin (31) is installed on the top of the fixed frame (3); a fixed bracket (32) is slidably fitted inside the fixed frame (3); a plurality of limiting holes (33) are opened in the middle of the fixed bracket (32); the limiting holes (33) are correspondingly set with the spring pin (31); a pressure block (34) is fixedly connected to the end of the fixed bracket (32).

4. A dual directional coupling filter according to claim 3, characterized in that: The side wall of the fixed frame (32) is provided with a sliding groove (4); a second slider (41) is slidably connected in the sliding groove (4); a pair of pressure rods (42) are symmetrically fixed to the side wall of the second slider (41); a screw hole (43) is provided in the middle of the second slider (41); a screw (44) is threaded in the screw hole (43).

5. A dual directional coupling filter according to claim 2, characterized in that: The top of the protective cover (21) is threaded with a screw (5); a pressure plate (51) is fixed to the end of the screw (5).

6. A dual directional coupling filter according to claim 1, characterized in that: The base (1) has multiple through slots (6) in the middle; the multiple through slots (6) are evenly distributed in the middle of the base (1).

7. A dual directional coupling filter according to claim 1, characterized in that: A rubber pad (7) is fixed to the side wall of the clamp (14).

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