Anti-interference device for frequency conversion control board

Abstract

The utility model provides an anti-interference device applied to a frequency conversion control board, comprising: a box body, a bottom plate fixedly connected inside the box body, an L-groove opened outside the bottom plate, a pressing pin slidably connected inside the L-groove, a top plate fixedly connected to the bottom of the pressing pin, a top protrusion fixedly connected to the top of the top plate, a bottom protrusion fixedly connected inside the L-groove, the top protrusion is snap-fitted with the bottom protrusion, a pressing plate slidably connected to the outside of the pressing pin, the pressing pin passes through the pressing plate and extends to the outside of the pressing plate. The utility model provides an anti-interference device applied to a frequency conversion control board, by adding an adjustment structure inside the device, the adjustment structure can be moved inside the device by manually pressing the pressing pin during use, a rotating block is movably connected to the outside of the hollow column, and the rotating block rotates according to the different positions of the reserved mounting holes on different frequency conversion control boards, so as to facilitate the replacement and installation of frequency conversion control boards of different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-interference of frequency conversion control boards, in particular to an anti-interference device applied to frequency conversion control boards. Background Art

[0002] The anti-interference of the frequency conversion control board refers to taking a series of measures to reduce or eliminate the adverse effects of external factors on the normal operation of the frequency conversion control board. When the frequency conversion control board is running, it may be subject to external electromagnetic interference, such as electromagnetic waves generated by other electrical equipment, harmonics in the power grid, etc. These interferences may cause abnormal control signals, malfunctions, and even damage components on the control board.

[0003] At present, the anti-interference device of the frequency conversion control board usually installs the new frequency conversion control board inside the device box. There are electronic devices inside the device box to absorb or offset the electromagnetic waves generated during operation and the harmonics in the power grid. However, when installing the frequency conversion control board, it is usually necessary to order device boxes of different sizes according to the sizes of different frequency conversion control boards, which makes the device boxes of various types increase the storage space.

[0004] Therefore, it is necessary to provide an anti-interference device applied to a frequency conversion control board to solve the above technical problems. Utility Model Content

[0005] The utility model provides an anti-interference device applied to a frequency conversion control board, which solves the problem that the device box cannot be adjusted according to the size of the frequency conversion control board.

[0006] In order to solve the above technical problems, the utility model provides an anti-interference device for a frequency conversion control board, comprising: a box body, a bottom plate fixedly connected inside the box body, an L-groove provided outside the bottom plate, a pressure pin slidably connected inside the L-groove, a top plate fixedly connected to the bottom of the pressure pin, a top protrusion fixedly connected to the top of the top plate, a bottom protrusion fixedly connected inside the L-groove, the top protrusion is clamped with the bottom protrusion, a pressure plate slidably connected to the outside of the pressure pin, the pressure pin passes through the pressure plate and extends to the outside of the pressure plate, a hollow column fixedly connected to the top of the pressure plate, the hollow column is slidably connected to the pressure pin, a limited position ring is fixedly connected to the outside of the hollow column, a compression spring is provided outside the pressure pin, a rotating block is movably connected to the outside of the hollow column, a rotating hole is provided at the other end of the rotating block, a frequency conversion control board is fixedly connected to the top of the rotating block, a mounting hole is provided outside the frequency conversion control board, a mounting hole is threadedly connected to a mounting rod inside the mounting hole, the mounting rod passes through the mounting hole and extends to the outside of the mounting hole, and the outside of the mounting rod is threadedly connected to the rotating hole.

[0007] Preferably, the outside of the box body is fixedly connected to a box block, the top of the box body is fixedly connected to a cover plate, the outside of the cover plate is fixedly connected to a cover block, the inside of the cover block is threadedly connected to a screw rod, the screw rod passes through the cover block and extends to the outside of the cover block, and the outside of the screw rod is threadedly connected to the box block.

[0008] Preferably, a long groove is opened on the outside of the box body, an adhesive plate is fixedly connected to the outside of the long groove, and a dustproof net is fixedly connected to the outside of the adhesive plate.

[0009] Preferably, an anti-interference block is fixedly connected to the inner wall of the box body, and a protective pad is fixedly connected to the outside of the anti-interference block.

[0010] Preferably, a middle groove is provided on the top of the bottom plate, and a heat dissipation fan is fixedly connected inside the middle groove.

[0011] Preferably, the outer wall of the bottom plate is fixedly connected with an anti-interference coating, and the inner wall of the box body is fixedly connected with the anti-interference coating.

[0012] Compared with the related art, the anti-interference device applied to the frequency conversion control board provided by the utility model has the following beneficial effects:

[0013] The utility model provides an anti-interference device applied to a frequency conversion control board. An adjustment structure is added inside the device. The adjustment structure can be moved inside the device by manually pressing a pressure pin during use. A rotating block is movably connected to the outside of a hollow column and rotates according to the positions of installation holes reserved on different frequency conversion control boards, so that frequency conversion control boards of different sizes can be replaced and installed easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A structural schematic diagram of a preferred embodiment of an anti-interference device applied to a frequency conversion control board provided by the utility model;

[0015] Figure 2 for Figure 1 The schematic diagram of the decomposition structure shown;

[0016] Figure 3 for Figure 2 An enlarged schematic diagram of part A is shown;

[0017] Figure 4 for Figure 1 The internal structure diagram shown;

[0018] Figure 5 for Figure 1 The schematic cross-sectional view shown;

[0019] Figure 6 for Figure 5 An enlarged schematic diagram of part B is shown.

[0020] Numbers in the figure: 1. box body, 2. bottom plate, 3. L-slot, 4. pressure pin, 5. top plate, 6. top protrusion, 7. bottom protrusion, 8. pressure plate, 9. round hollow column, 10. limiting ring, 11. compression spring, 12. rotating block, 13. rotating hole, 14. frequency conversion control board, 15. mounting hole, 16. mounting rod, 17. box block, 18. cover plate, 19. cover block, 20. screw, 21. long slot, 22. adhesive plate, 23. dustproof net, 24. anti-interference block, 25. protection pad, 26. middle slot, 27. cooling fan, 28. anti-interference coating. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0022] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 ,in, Figure 1 A structural schematic diagram of a preferred embodiment of an anti-interference device applied to a frequency conversion control board provided by the utility model;

[0023] Figure 2 for Figure 1 The schematic diagram of the decomposition structure shown; Figure 3 for Figure 2 An enlarged schematic diagram of part A is shown; Figure 4 for Figure 1 The internal structure diagram shown; Figure 5 for Figure 1 The schematic cross-sectional view shown; Figure 6 for Figure 5The enlarged schematic diagram of part B is shown. The anti-interference device applied to the frequency conversion control board includes: a box body 1, a bottom plate 2 is fixedly connected inside the box body 1, an L-groove 3 is provided outside the bottom plate 2, a pressing pin 4 is slidably connected inside the L-groove 3, a top plate 5 is fixedly connected to the bottom of the pressing pin 4, a top protrusion 6 is fixedly connected to the top of the top plate 5, a bottom protrusion 7 is fixedly connected inside the L-groove 3, the top protrusion 6 is clamped with the bottom protrusion 7, a pressing plate 8 is slidably connected to the outside of the pressing plate 8, the pressing pin 4 passes through the pressing plate 8 and extends to the outside of the pressing plate 8, a hollow column 9 is fixedly connected to the top of the pressing plate 8, and the hollow column 9 is fixedly connected to the top of the pressing plate 8. The column 9 is slidably connected to the pressure pin 4, the outer part of the hollow column 9 is fixedly connected to a limiting ring 10, the outer part of the pressure pin 4 is provided with a compression spring 11, the outer part of the hollow column 9 is movably connected to a rotating block 12, the other end of the rotating block 12 is provided with a rotating hole 13, the top of the rotating block 12 is fixedly connected to a frequency conversion control board 14, the outer part of the frequency conversion control board 14 is provided with a mounting hole 15, the inner part of the mounting hole 15 is threadedly connected to a mounting rod 16, the mounting rod 16 passes through the mounting hole 15 and extends to the outside of the mounting hole 15, and the outer part of the mounting rod 16 is threadedly connected to the rotating hole 13.

[0024] The pressing pin 4 is manually pressed down by a person to move the pressing pin 4 downward. When the pressing pin 4 moves downward, a pressing plate 8 is installed at the bottom of the pressing pin 4, and a top protrusion 6 is installed on the top of the pressing plate 8. When the pressing pin 4 moves downward, the top protrusion 6 is separated from the bottom protrusion 7 installed inside the L-slot 3. The separation allows the pressing pin 4 to move inside the L-slot 3 and be adjusted according to the size of the frequency conversion control board 14. A pressing plate 8 is movably connected to the outside of the pressing pin 4, and a hollow column 9 is installed on the top of the pressing plate 8. The pressing pin 4 slides inside the pressing plate 8 and the hollow column 9 to play a limiting role.

[0025] The outside of the box body 1 is fixedly connected to a box block 17, the top of the box body 1 is fixedly connected to a cover plate 18, the outside of the cover plate 18 is fixedly connected to a cover block 19, the inside of the cover block 19 is threadedly connected to a screw rod 20, the screw rod 20 passes through the cover block 19 and extends to the outside of the cover block 19, and the outside of the screw rod 20 is threadedly connected to the box block 17.

[0026] The cover plate 18 is fixedly connected to the top of the box body 1 so that the box body 1 is in a sealed state, so that the frequency conversion control board 14 inside the box body 1 will not be corroded by dust and rainwater, thereby increasing the service life of the frequency conversion control board 14.

[0027] The box body 1 is provided with a long slot 21 on the outside, an adhesive plate 22 is fixedly connected to the outside of the long slot 21 , and a dustproof net 23 is fixedly connected to the outside of the adhesive plate 22 .

[0028] A long groove 21 is provided on the outside of the box body 1 to facilitate the outflow of heat generated by the frequency conversion control board 14 during operation, so that the temperature inside the box body 1 will not be too high. A dustproof net 23 is used to prevent dust from entering when the long groove 21 dissipates heat. A cotton layer is installed on one side of the dustproof net 23, which can fit tightly with the adhesive plate 22.

[0029] An anti-interference block 24 is fixedly connected to the inner wall of the box body 1 , and a protection pad 25 is fixedly connected to the outside of the anti-interference block 24 .

[0030] An anti-interference block 24 is fixedly connected to the inner wall of the box body 1 . The anti-interference block 24 is made of a ferrite absorber material and can reduce the damage of electromagnetic waves to the frequency conversion control board 14 . The protective pad 25 prevents the anti-interference block 24 from being scratched.

[0031] A middle groove 26 is formed on the top of the bottom plate 2 , and a heat dissipation fan 27 is fixedly connected inside the middle groove 26 .

[0032] A middle groove 26 is opened at the middle position of the top of the bottom plate 2 , and a heat dissipation fan 27 is installed inside the middle groove 26 , so that the heat dissipation fan 27 cools and ventilates the frequency conversion control board 14 .

[0033] The outer wall of the bottom plate 2 is fixedly connected with an anti-interference coating 28 , and the inner wall of the box body 1 is fixedly connected with the anti-interference coating 28 .

[0034] Electromagnetic interference can be resisted by uniformly applying the anti-interference coating 28 on both sides of the inner wall of the box body 1 and inside the box body 1 .

[0035] The working principle of the anti-interference device applied to the frequency conversion control board provided by the utility model is as follows: a person manually presses the pressing pin 4 to make the pressing pin 4 move downward, and when the pressing pin 4 moves downward, a pressing plate 8 is installed at the bottom of the pressing pin 4, and a top protrusion 6 is installed on the top of the pressing plate 8. When the pressing pin 4 moves downward, the top protrusion 6 is separated from the bottom protrusion 7 installed inside the L groove 3, and the pressing pin 4 can move inside the L groove 3 through separation, and can be adjusted according to the size of the frequency conversion control board 14, and a pressing plate 8 is movably connected to the outside of the pressing pin 4, and a hollow column 9 is installed on the top of the pressing plate 8, and the pressing pin 4 is moved between the pressing plate 8 and the bottom protrusion 7 installed inside the L groove 3. The hollow column 9 slides inside to play a limiting role. A compression spring 11 is arranged on the outside of the pressing pin 4. When the pressing pin 4 moves downward, the compression spring 11 is squeezed to shorten the stroke. When released, the compression spring 11 releases energy to squeeze the top protrusion 6 and the bottom protrusion 7 together again so that the pressing rod can be fixed inside the L groove 3. A rotating block 12 is movably connected to the outside of the hollow column 9. The rotating block 12 is rotated according to the size and shape of the frequency conversion control board 14. A rotating hole 13 is opened at the other end of the rotating block 12 to facilitate alignment with the reserved mounting hole 15 on the frequency conversion control board 14 when the frequency conversion control board 14 is placed for easy fixation.

[0036] Compared with the related art, the anti-interference device applied to the frequency conversion control board provided by the utility model has the following beneficial effects: the utility model provides an anti-interference device applied to the frequency conversion control board 14, by adding an adjustment structure inside the device, the adjustment structure can be moved inside the device by manually pressing the pressure pin 4 during use, and a rotating block 12 is movably connected to the outside of the pressure pin 4, which rotates according to the different positions of the reserved mounting holes 15 on different frequency conversion control boards 14, so as to facilitate the replacement and installation of frequency conversion control boards 14 of different sizes.

[0037] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An anti-interference device applied to a frequency conversion control board, characterized in that: include: The box body has a bottom plate fixedly connected inside the box body, an L-groove is provided on the outside of the bottom plate, a pressing pin is slidably connected inside the L-groove, the bottom of the pressing pin is fixedly connected to a top plate, the top of the top plate is fixedly connected to a top protrusion, the bottom protrusion is fixedly connected inside the L-groove, the top protrusion is clamped with the bottom protrusion, the outside of the pressing pin is slidably connected to a pressing plate, the pressing pin passes through the pressing plate and extends to the outside of the pressing plate, a hollow column is fixedly connected to the top of the pressing plate, the hollow column is slidably connected to the pressing pin, a limiting position ring is fixedly connected to the outside of the hollow column, a compression spring is provided on the outside of the pressing pin, a rotating block is movably connected to the outside of the hollow column, a rotating hole is provided at the other end of the rotating block, a frequency conversion control board is fixedly connected to the top of the rotating block, a mounting hole is provided on the outside of the frequency conversion control board, a mounting rod is threadedly connected to the mounting hole, the mounting rod passes through the mounting hole and extends to the outside of the mounting hole, and the outside of the mounting rod is threadedly connected to the rotating hole.

2. The anti-interference device applied to the frequency conversion control board according to claim 1 is characterized in that: The outside of the box body is fixedly connected to a box block, the top of the box body is fixedly connected to a cover plate, the outside of the cover plate is fixedly connected to a cover block, the inside of the cover block is threadedly connected to a screw rod, the screw rod passes through the cover block and extends to the outside of the cover block, and the outside of the screw rod is threadedly connected to the box block.

3. The anti-interference device applied to the frequency conversion control board according to claim 1 is characterized in that: A long slot is provided on the outside of the box body, an adhesive plate is fixedly connected to the outside of the long slot, and a dustproof net is fixedly connected to the outside of the adhesive plate.

4. The anti-interference device applied to the frequency conversion control board according to claim 1 is characterized in that: An anti-interference block is fixedly connected to the inner wall of the box body, and a protection pad is fixedly connected to the outside of the anti-interference block.

5. The anti-interference device applied to the frequency conversion control board according to claim 1 is characterized in that: A middle groove is formed on the top of the bottom plate, and a heat dissipation fan is fixedly connected inside the middle groove.

6. The anti-interference device applied to the frequency conversion control board according to claim 1 is characterized in that: The outer wall of the bottom plate is fixedly connected with an anti-interference coating, and the inner wall of the box body is fixedly connected with the anti-interference coating.

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