Tri-frequency curve noise reduction device

Abstract

The utility model discloses a three-frequency curve noise reduction device which comprises a storage box, a fixing plate is movably installed in the storage box, a sliding groove is formed in the top of the fixing plate, a round rod is fixedly installed in the sliding groove, and sliding blocks are movably connected to the two sides of the surface of the round rod in a sleeved mode. The outer surfaces of the sliding blocks are movably connected with the inner surfaces of the sliding grooves, springs are fixedly installed between the sliding blocks and the sliding grooves, the inner surfaces of the springs are movably connected with the outer surfaces of the round rods, and connecting blocks are fixedly installed at the tops of the sliding blocks. According to the three-frequency curve noise reduction device, in the daily use process, an operator places a filter between clamping plates, then the filter is continuously pressed, then the outer surface of the filter continuously extrudes the inner surfaces of the clamping plates, and due to the limiting effect of a round rod, a sliding block and a connecting block oppositely move in a sliding groove at the moment; and meanwhile, the spring can be extruded, so that the spring is in a compressed state.

Description

Technical Field

[0001] The utility model relates to the technical field of three-frequency curve sound, in particular to a three-frequency curve noise reduction device. Background Art

[0002] With the progress of society, people yearn for a more colorful life. As a form of entertainment that has been passed down for thousands of years, singing and dancing have penetrated into the lives of people of all ethnic groups. However, with the development and progress of science and technology, people have more and more requirements for the performance forms and venues of singing and dancing, and the sound system has been continuously improved and perfected with people's needs. From meeting the needs of live sound reinforcement for concerts with tens of thousands of people to meeting the needs of playing musical instruments and karaoke for individuals and families, three-frequency curve sound is a kind of sound. When the sound is played, it will generate noise, so a three-frequency curve noise reduction device is needed.

[0003] When operators reduce the noise of three-frequency curve speakers, they often use three-frequency curve noise reduction devices. Although the existing devices can achieve the purpose of noise reduction, they are often placed inside the speakers in actual processes. This operation method is not convenient for maintenance or repair, which may reduce its service life. In addition, most devices are fixedly installed, which is not convenient for adjustment, and its practicality is reduced. Utility Model Content

[0004] The purpose of the utility model is to provide a three-frequency curve noise reduction device to solve the problem raised in the above background technology that operators often use three-frequency curve noise reduction devices when reducing the noise of three-frequency curve speakers. Although the existing devices can achieve the purpose of noise reduction, they are often placed inside the speakers in actual processes. This operation method is not convenient for maintenance or repair, which may reduce its service life. In addition, the devices are mostly fixedly installed, which is not convenient for adjustment and reduces practicality.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a three-frequency curve noise reduction device, comprising a storage box, a fixed plate movably installed inside the storage box, a slide groove is provided on the top of the fixed plate, a round rod is fixedly installed inside the slide groove, both sides of the surface of the round rod are movably sleeved with sliders, the outer surface of the slider is movably connected to the inner surface of the slide groove, a spring is fixedly installed between the slider and the slide groove, the inner surface of the spring is movably connected to the outer surface of the round rod, a connecting block is fixedly installed on the top of the slider, a splint is fixedly installed on the top of the connecting block, rubber pads are fixedly installed on the opposite surfaces of the splints, and filters are movably installed between the rubber pads.

[0006] Preferably, a strip groove is provided at the bottom of the storage box, a screw rod is rotatably installed inside the strip groove, both sides of the screw rod surface are threadedly sleeved with sliding sleeves, the top of the sliding sleeve is hinged with an adjustment rod, the top of the adjustment rod is hinged with a lifting plate, the top of the lifting plate is fixedly connected to the bottom of the storage box, a turning handle is fixedly installed on one side of the storage box, and one end of the turning handle passes through the storage box and is fixedly connected to one side of the screw rod.

[0007] Preferably, a cover plate is hinged on the top of the storage box, a bolt is rotatably mounted on the top of the cover plate, and the bottom of the bolt passes through the cover plate and extends to the interior of the storage box.

[0008] Preferably, a circular groove is formed on one side of the storage box, and a fan is fixedly installed inside the circular groove.

[0009] Preferably, fixing blocks are fixedly installed on both sides of the storage box, and fixing holes are formed on the tops of the fixing blocks.

[0010] Preferably, one side of the storage box is provided with threading holes at equal distances, the number of the threading holes is four, and the sizes of the four threading holes are the same.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the daily use of the three-frequency curve noise reduction device, the operator places the filter between the clamping plates and then continues to press the filter, and then the outer surface of the filter will continuously squeeze the inner surface of the clamping plates. Due to the limiting effect of the round rod, the slider and the connecting block will move in opposite directions inside the slide groove, and at the same time, the spring will be squeezed to be in a compressed state. The provided spring and clamping plates can facilitate the installation and disassembly of the filter, and thus facilitate its maintenance and repair, thereby increasing the service life of the device.

[0013] The three-frequency curve noise reduction device has a three-frequency curve noise reduction device. During daily use, the operator turns the handle, and the rotation of the handle causes the lead screw to rotate, which drives the two sleeves to move toward or away from each other on the surface of the lead screw, and at the same time drives the adjustment rod to rise and fall, thereby driving the lifting plate and the filter on the top of the lifting plate to slide up and down. The filter can be adjusted by the provided lead screw and the adjustment rod, thereby increasing its practicality. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 For the utility model Figure 2A partial enlarged view of the middle part;

[0017] Figure 4 For the utility model Figure 2 A partial enlarged view of point B in the middle.

[0018] In the figure: 1. storage box; 2. fixing plate; 3. slide groove; 4. round rod; 5. slider; 6. spring; 7. connecting block; 8. clamping plate; 9. rubber pad; 10. filter; 11. strip groove; 12. screw rod; 13. sliding sleeve; 14. adjusting rod; 15. lifting plate; 16. turning handle; 17. cover plate; 18. bolt; 19. round groove; 20. fan; 21. fixing block; 22. fixing hole; 23. threading hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4The utility model provides a technical solution: a three-frequency curve noise reduction device, including a storage box 1, a fixed plate 2 is movably installed inside the storage box 1, a slide groove 3 is opened on the top of the fixed plate 2, a round rod 4 is fixedly installed inside the slide groove 3, and sliders 5 are movably sleeved on both sides of the surface of the round rod 4. The slider 5 will move toward or away from the surface of the round rod 4. The outer surface of the slider 5 is movably connected to the inner surface of the slide groove 3. A spring 6 is fixedly installed between the slider 5 and the slide groove 3. The inner surface of the spring 6 is movably connected to the outer surface of the round rod 4. The slider 5 When the round rod 4 slides inside, the spring 6 is squeezed to make the spring 6 in a compressed state, so that the filter 10 can be clamped and fixed. The top of the slider 5 is fixedly installed with a connecting block 7, and the top of the connecting block 7 is fixedly installed with a clamping plate 8. When the slider 5 slides, it will drive the connecting block 7 and the clamping plate 8 to slide synchronously. The opposite surface of the clamping plate 8 is fixedly installed with a rubber pad 9. The rubber pad 9 can protect the filter 10 when clamped and fixed, reducing the damage to the filter 10, and the filter 10 is movably installed between the rubber pads 9. The filter 10 The filter 10 is connected to the speaker through a wire. The filter 10 is a filter circuit composed of a capacitor, an inductor and a resistor. The filter 10 can effectively filter out a frequency point of a specific frequency in the power line or a frequency other than the frequency point to obtain a power signal of a specific frequency, or eliminate a power signal after a specific frequency, thereby achieving the purpose of noise reduction. A strip groove 11 is provided at the bottom of the storage box 1. A screw rod 12 is rotatably installed inside the strip groove 11. Both sides of the surface of the screw rod 12 are threadedly sleeved with a sliding sleeve 13. When the screw rod 12 rotates, it will drive two sliding sleeves 13 moves toward or away from each other inside the strip groove 11, the top of the sliding sleeve 13 is hinged with an adjusting rod 14, and the top of the adjusting rod 14 is hinged with a lifting plate 15. When the sliding sleeve 13 slides, it will synchronously drive the adjusting rod 14 to slide, thereby driving the lifting plate 15 to rise or fall, and the top of the lifting plate 15 is fixedly connected to the bottom of the storage box 1, and a turning handle 16 is fixedly installed on one side of the storage box 1, and one end of the turning handle 16 passes through the storage box 1 and is fixedly connected to one side of the screw rod 12, and the turning handle 16 will cause the screw rod 12 to rotate when it rotates.

[0021] A cover plate 17 is hinged on the top of the storage box 1, and a bolt 18 is rotatably installed on the top of the cover plate 17, and the bottom of the bolt 18 passes through the cover plate 17 and extends to the inside of the storage box 1. The storage box 1 can be closed by the cover plate 17 and the bolt 18. A circular groove 19 is provided on one side of the storage box 1, and a fan 20 is fixedly installed inside the circular groove 19. The filter 10 generates heat when in use. At this time, the fan 20 is started to blow away the heat to prevent overheating from damaging the filter 10. Fixed blocks 21 are fixedly installed on both sides of the storage box 1, and fixed holes 22 are provided on the top of the fixed blocks 21. The fixing blocks 21 and the fixing holes 22 can be fixed to the external installation position of the audio. Wire holes 23 are equidistantly provided on one side of the storage box 1. The number of the wire holes 23 is four, and the four wire holes 23 have the same size. The wire holes 23 are used for the threading of wires.

[0022] Working principle: First, the operator places the filter 10 between the clamping plates 8, and then continues to press the filter 10. Subsequently, the outer surface of the filter 10 will continuously squeeze the inner surface of the clamping plate 8. Due to the limiting effect of the round rod 4, the slider 5 and the connecting block 7 will move in opposite directions inside the slide groove 3, and at the same time, the spring 6 will be squeezed to make the spring 6 in a compressed state, thereby clamping and fixing the filter 10. Secondly, turn the handle 16. The rotation of the handle 16 will cause the screw rod 12 to rotate. At this time, the two sliding sleeves 13 will move in opposite directions on the surface of the screw rod 12, and the adjusting rod 14 will be driven to rise and fall, thereby driving the lifting plate 15 and the filter 10 on its top to slide into the interior of the storage box 1, and at the same time pull the cover plate 17 so that the cover plate 17 reaches the top of the storage box 1. At this time, turn the bolt 18 and screw it into the cover plate 17 and the interior of the storage box 1 to close it. Finally, it is fixed to the surface of the audio through the fixing block 21 and the fixing hole 22.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-frequency curve noise reduction device, comprising a storage box (1), characterized in that: A fixed plate (2) is movably installed inside the storage box (1), a slide groove (3) is provided on the top of the fixed plate (2), a round rod (4) is fixedly installed inside the slide groove (3), sliders (5) are movably sleeved on both sides of the surface of the round rod (4), the outer surface of the slider (5) is movably connected to the inner surface of the slide groove (3), a spring (6) is fixedly installed between the slider (5) and the slide groove (3), the inner surface of the spring (6) is movably connected to the outer surface of the round rod (4), a connecting block (7) is fixedly installed on the top of the connecting block (7), a clamping plate (8) is fixedly installed on the top of the clamping plate (8), a rubber pad (9) is fixedly installed on the opposite surface of the clamping plate (8), and a filter (10) is movably installed between the rubber pads (9).

2. A three-frequency curve noise reduction device according to claim 1, characterized in that: The bottom end of the storage box (1) is provided with a strip groove (11), a screw rod (12) is rotatably installed inside the strip groove (11), both sides of the surface of the screw rod (12) are threadedly sleeved with sliding sleeves (13), the top of the sliding sleeve (13) is hinged with an adjusting rod (14), the top of the adjusting rod (14) is hinged with a lifting plate (15), the top of the lifting plate (15) is fixedly connected to the bottom of the storage box (1), a turning handle (16) is fixedly installed on one side of the storage box (1), and one end of the turning handle (16) passes through the storage box (1) and is fixedly connected to one side of the screw rod (12).

3. The three-frequency curve noise reduction device according to claim 1, characterized in that: The top of the storage box (1) is hinged with a cover plate (17), the top of the cover plate (17) is rotatably mounted with a bolt (18), and the bottom of the bolt (18) penetrates the cover plate (17) and extends into the interior of the storage box (1).

4. The three-frequency curve noise reduction device according to claim 1, characterized in that: A circular groove (19) is provided on one side of the storage box (1), and a fan (20) is fixedly installed inside the circular groove (19).

5. The three-frequency curve noise reduction device according to claim 1, characterized in that: Fixed blocks (21) are fixedly installed on both sides of the storage box (1), and the tops of the fixed blocks (21) are provided with fixing holes (22).

6. The three-frequency curve noise reduction device according to claim 1, characterized in that: One side of the storage box (1) is provided with threading holes (23) at equal distances, the number of the threading holes (23) is four, and the four threading holes (23) have the same size.

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