Outdoor explosion-proof loudspeaker with good dustproof effect

Abstract

The utility model discloses an outdoor explosion-proof loudspeaker with a good dustproof effect, which relates to the technical field of loudspeakers, and comprises an inner shell, a permanent magnet is arranged in the inner shell, a first iron plate and a second iron plate are respectively arranged on the outer walls of the two sides of the permanent magnet, an iron column is fixedly connected to the outer wall of one side of the first iron plate, and the second iron plate is fixedly connected to the outer wall of the other side of the first iron plate. One end of the iron column penetrates through the center of the permanent magnet, the outer wall of the circumference of the permanent magnet is sleeved with a paper tube, and a copper coil is wound on the outer wall of the circumference of the paper tube. According to the utility model, the dustproof net is arranged at one end of the paper disc, so that dust and other impurities can be efficiently prevented from invading into the loudspeaker, the sound production quality is ensured, the service life is prolonged, and the dustproof net is fixed by using the magnetic attraction of the magnetic ring plate and the mounting groove, so that workers can quickly disassemble and clean the dustproof net; and meanwhile, the baffle ring plate on one side of the connecting plate plays a role in limiting the magnetic ring plate, so that the installation of the dustproof net is further stabilized, and the dustproof effect is effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker technology, and in particular to an outdoor explosion-proof loudspeaker with good dustproof effect. Background Technology

[0002] Outdoor loudspeakers, as audio playback devices widely used in outdoor environments, need to possess numerous characteristics to adapt to complex usage scenarios. In hazardous locations containing flammable and explosive gases, such as oil fields, chemical plants, oil depots, natural gas extraction facilities, drilling platforms, ports, docks, pharmaceutical plants, mines, and wells, loudspeakers face stringent requirements for explosion-proof performance. Furthermore, the outdoor environment is often dusty, and dust intrusion can easily damage the internal structure of the loudspeaker, affecting its sound quality and lifespan.

[0003] Currently, outdoor loudspeakers on the market have certain shortcomings in terms of dust and explosion protection. Some loudspeakers have simple dustproof structures that cannot effectively prevent dust from entering; while some loudspeakers with explosion-proof functions are not satisfactory in terms of dust protection, making it difficult to meet the requirements for long-term stable operation in harsh outdoor environments. Therefore, there is an urgent need for an outdoor explosion-proof loudspeaker with good dust protection to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies by proposing an outdoor explosion-proof loudspeaker with excellent dustproof performance. Its advantages include: the dustproof mesh equipped at one end of the paper tray effectively prevents dust, particles, and other impurities from entering the loudspeaker, ensuring sound quality and extending its service life.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An outdoor explosion-proof loudspeaker with good dustproof effect includes an inner shell, in which a permanent magnet is disposed. A first iron plate and a second iron plate are respectively disposed on the two outer walls of the permanent magnet. An iron column is fixedly connected to one outer wall of the first iron plate. One end of the iron column passes through the center of the permanent magnet. A paper tube is sleeved on the outer circumference of the permanent magnet. A copper coil is wound around the outer circumference of the paper tube. A paper disk is fixedly connected to one end of the paper tube. The paper disk has a horn-shaped cross-section. A diaphragm is disposed inside the paper disk. An explosion-proof component is disposed on the outside of the inner shell.

[0007] A dustproof component is provided at one end of the paper tray.

[0008] The above technical solutions can effectively prevent dust, particles, and other impurities from entering the speaker, ensuring sound quality and extending service life.

[0009] The present invention is further configured such that the explosion-proof component includes an explosion-proof shell fixedly connected to the outer circumferential wall of the inner shell, a partition fixedly connected to the inner circumferential wall of the explosion-proof shell, and the partition, the explosion-proof shell and the inner shell surround an explosion-proof cavity.

[0010] Through the above technical solutions, when electrical sparks or high temperatures are generated inside the speaker due to electrical faults or other reasons, the explosion-proof cavity can effectively prevent the internal explosion from spreading to the outside, thereby protecting the safety of the surrounding environment and achieving the explosion-proof function.

[0011] The present invention is further provided that a reinforcing frame is fixedly connected to one side of the outer wall of the explosion-proof shell, and the cross-section of the reinforcing frame is cross-shaped.

[0012] Through the above technical solutions, the cross-section of the reinforcing frame is cross-shaped, which can provide additional support for the explosion-proof shell, enhance its overall strength, and make the explosion-proof shell less prone to deformation and damage when the speaker is subjected to external impact, thereby further improving the explosion-proof performance.

[0013] The present invention is further configured such that a reinforcing ring plate with equidistant outward diffusion is fixedly connected to one side of the explosion-proof shell, the reinforcing ring plate is fixedly connected to the reinforcing frame, and a reinforcing column is fixedly connected to one side of the outer wall of the reinforcing frame, the outer circumferential wall of the reinforcing column being in close contact with the outer circumferential wall of the explosion-proof shell.

[0014] Through the above technical solutions: the outer wall of the reinforcing column is closely attached to the outer wall of the explosion-proof shell, the reinforced ring plate can disperse the impact force from the outside, and the reinforcing column enhances the pressure resistance of the explosion-proof shell from the side. Together with the reinforcing frame, they improve the structural strength of the speaker in all aspects and ensure the explosion-proof stability in harsh environments.

[0015] The present invention is further configured such that a reinforcing plate is fixedly connected to one end of the explosion-proof shell, and the reinforcing column is fixedly connected to the reinforcing plate.

[0016] Through the above technical solutions, the reinforcement plate can further enhance the strength of the explosion-proof shell end, making the entire speaker structure more stable, better resisting external impacts, and ensuring the explosion-proof effect.

[0017] The present invention is further provided that a fixing screw is provided at each of the four corners of the reinforcing plate, and the reinforcing plate is fixedly connected to the connecting plate through the fixing screw.

[0018] The above technical solution involves installing fixing screws at the four corners of the reinforcing plate and fixing them to the connecting plate. This connection method is simple to operate, making it easy for staff to install and disassemble the speaker, while also ensuring the stability of the speaker after installation.

[0019] The present invention is further configured such that the dustproof component includes a mounting groove formed on one side of the connecting plate, a magnetic ring plate is adsorbed inside the mounting groove, the magnetic ring plate cooperates with the mounting groove, and a dustproof net is fixedly connected to the inner circumference of the magnetic ring plate.

[0020] The above technical solution utilizes the magnetic attraction between the magnetic ring plate and the mounting groove to facilitate quick installation and removal of the dustproof net by staff, and allows for regular cleaning and maintenance of the dustproof net, ensuring that the dustproof net maintains a good dustproof effect for a long time and effectively preventing dust and other impurities from entering the speaker.

[0021] The present invention is further configured such that a retaining ring plate is fixedly connected to one side of the connecting plate, the retaining ring plate has an L-shaped cross-section, and the retaining ring plates are distributed in equal-distance circles on one side of the connecting plate.

[0022] Through the above technical solutions, the retaining ring plate can limit the magnetic ring plate, preventing it from shifting or falling off during use, further stabilizing the installation of the dustproof net, ensuring that the dustproof net is always in an effective working state, and improving the dustproof effect.

[0023] The beneficial effects of this utility model are as follows:

[0024] 1. An outdoor explosion-proof loudspeaker with good dustproof effect, which can effectively block dust, powder and other impurities from entering the loudspeaker through a dustproof net equipped at one end of the paper tray, ensuring sound quality and extending service life. The dustproof net is fixed by magnetic attraction between the magnetic ring plate and the mounting groove, which is convenient for workers to quickly disassemble and clean. At the same time, the retaining ring plate on one side of the connecting plate limits the magnetic ring plate, further stabilizing the installation of the dustproof net and effectively ensuring the dustproof effect.

[0025] 2. An outdoor explosion-proof loudspeaker with good dustproof performance, which significantly improves the overall strength of the loudspeaker by setting an explosion-proof shell, reinforcing columns, reinforcing frames and reinforcing ring plates on the inner shell and outer wall. This makes the loudspeaker have excellent explosion-proof capabilities and can fully meet the requirements for use in dangerous outdoor places where there are flammable and explosive gases, providing strong support for safe use.

[0026] 3. An outdoor explosion-proof loudspeaker with good dustproof performance, through the design of a reinforcing frame with a cross-shaped cross section, an outwardly radiating reinforcing ring plate, a reinforcing column tightly attached to the explosion-proof shell, and a fixed connection with the reinforcing plate, significantly enhances the structural stability of the loudspeaker, enabling it to work stably in harsh outdoor environments. In addition, the reinforcing plate is connected to the connecting plate by fixing screws, which is simple to operate and greatly facilitates the installation and fixation of the loudspeaker. Attached Figure Description

[0027] Figure 1This is a schematic diagram of the overall three-dimensional structure of an outdoor explosion-proof speaker with good dustproof effect proposed in this utility model;

[0028] Figure 2 This is a schematic diagram showing the disassembled structure of an outdoor explosion-proof speaker with good dustproof effect proposed in this utility model;

[0029] Figure 3 This is a schematic diagram of the overall semi-sectional structure of an outdoor explosion-proof speaker with good dustproof effect proposed in this utility model;

[0030] Figure 4 This utility model proposes an outdoor explosion-proof speaker with good dustproof effect. Figure 3 A magnified structural diagram of point A in the middle.

[0031] In the diagram: 1. Explosion-proof shell; 2. Reinforcing frame; 3. Reinforcing column; 4. Connecting plate; 5. Magnetic ring plate; 6. Dustproof net; 7. Baffle plate; 8. Fixing screw; 9. Reinforcing plate; 10. Mounting groove; 11. Paper tray; 12. Reinforcing ring plate; 13. Inner shell; 14. Partition plate; 15. First iron plate; 16. Iron column; 17. Paper tube; 18. Permanent magnet; 19. Second iron plate; 20. Copper coil; 21. Vibration diaphragm. Detailed Implementation

[0032] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0033] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0034] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.

[0035] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0036] Reference Figures 1-4 An outdoor explosion-proof loudspeaker with good dustproof effect includes an inner shell 13. A permanent magnet 18 is disposed inside the inner shell 13. A first iron plate 15 and a second iron plate 19 are respectively disposed on the outer walls of the two sides of the permanent magnet 18. An iron column 16 is fixedly connected to one side of the outer wall of the first iron plate 15. One end of the iron column 16 passes through the center of the permanent magnet 18. A paper tube 17 is sleeved on the outer circumference of the permanent magnet 18. A copper coil 20 is wound around the outer circumference of the paper tube 17. A paper disk 11 is fixedly connected to one end of the paper tube 17. The cross-section of the paper disk 11 is trumpet-shaped. A diaphragm 21 is disposed inside the paper disk 11. An explosion-proof component is disposed on the outside of the inner shell 13.

[0037] A dustproof component is provided at one end of the paper tray 11.

[0038] Specifically, the explosion-proof component includes an explosion-proof shell 1 fixedly connected to the outer circumference of the inner shell 13. A partition 14 is fixedly connected to the inner circumference of the explosion-proof shell 1. The partition 14, the explosion-proof shell 1, and the inner shell 13 surround an explosion-proof cavity. The explosion-proof shell 1 is set outside the inner shell 13, and the partition 14 is set inside the explosion-proof shell 1 to form an explosion-proof cavity. When an electrical spark or high temperature is generated inside the speaker due to electrical faults or other reasons, the explosion-proof cavity can effectively prevent the internal explosion from spreading to the outside, thereby protecting the safety of the surrounding environment and realizing the explosion-proof function.

[0039] Specifically, a reinforcing frame 2 is fixedly connected to one side of the outer wall of the explosion-proof enclosure 1. The cross-section of the reinforcing frame 2 is cross-shaped. The reinforcing frame 2 is fixedly connected to one side of the outer wall of the explosion-proof enclosure 1, and the cross-section of the reinforcing frame 2 is cross-shaped. It can provide additional support for the explosion-proof enclosure 1, enhance its overall strength, and make the explosion-proof enclosure 1 less prone to deformation and damage when the speaker is subjected to external impact, thereby further improving the explosion-proof performance.

[0040] Specifically, a reinforcing ring plate 12 with equidistant outward diffusion is fixedly connected to one side of the explosion-proof housing 1. The reinforcing ring plate 12 is fixedly connected to the reinforcing frame 2. A reinforcing column 3 is fixedly connected to one side of the outer wall of the reinforcing frame 2. The outer circumference of the reinforcing column 3 is in close contact with the outer circumference of the explosion-proof housing 1. The reinforcing ring plate 12 with equidistant outward diffusion is fixedly connected to one side of the explosion-proof housing 1 and fixed to the reinforcing frame 2. At the same time, the reinforcing column 3 is fixedly connected to one side of the outer wall of the reinforcing frame 2. The outer circumference of the reinforcing column 3 is in close contact with the outer circumference of the explosion-proof housing 1. The reinforcing ring plate 12 can disperse the impact force from the outside, while the reinforcing column 3 enhances the compressive strength of the explosion-proof housing 1 from the side. Together with the reinforcing frame 2, they comprehensively improve the structural strength of the speaker and ensure the explosion-proof stability in harsh environments.

[0041] Specifically, a reinforcing plate 9 is fixedly connected to one end of the explosion-proof housing 1, and a reinforcing column 3 is fixedly connected to the reinforcing plate 9. The reinforcing plate 9 is fixedly connected to one end of the explosion-proof housing 1, and the reinforcing column 3 is fixed to the reinforcing plate 9. The reinforcing plate 9 can further strengthen the end of the explosion-proof housing 1, making the entire speaker structure more stable, better resisting external impacts, and ensuring the explosion-proof effect.

[0042] Specifically, fixing screws 8 are provided at the four corners of the reinforcing plate 9. The reinforcing plate 9 is fixedly connected to the connecting plate 4 through the fixing screws 8. The fixing screws 8 at the four corners of the reinforcing plate 9 are fixedly connected to the connecting plate 4 through the fixing screws 8. This connection method is simple to operate, which makes it easy for staff to install and disassemble the speaker, and at the same time ensures the stability of the speaker after installation.

[0043] Specifically, the dustproof component includes a mounting groove 10 on one side of the connecting plate 4. A magnetic ring plate 5 is adsorbed inside the mounting groove 10. The magnetic ring plate 5 cooperates with the mounting groove 10. A dustproof mesh 6 is fixedly connected to the inner circumference of the magnetic ring plate 5. The magnetic ring plate 5 is adsorbed inside the mounting groove 10, and the dustproof mesh 6 is fixedly connected to the inner circumference of the magnetic ring plate 5. The magnetic attraction between the magnetic ring plate 5 and the mounting groove 10 makes it convenient for staff to quickly install and remove the dustproof mesh 6, and facilitates regular cleaning and maintenance of the dustproof mesh 6, ensuring that the dustproof mesh 6 maintains a good dustproof effect for a long time and effectively blocks dust and other impurities from entering the speaker.

[0044] Specifically, a retaining ring plate 7 is fixedly connected to one side of the connecting plate 4. The retaining ring plate 7 has an L-shaped cross-section and is distributed in equal-distance circles on one side of the connecting plate 4. The retaining ring plate 7 can limit the magnetic ring plate 5, preventing it from shifting or falling off during use, further stabilizing the installation of the dustproof net 6, ensuring that the dustproof net 6 is always in an effective working state, and improving the dustproof effect.

[0045] Working principle: During use, when the audio current passes through the copper coil 20 (voice coil) of the speaker, according to Ampere's law, the current will generate a magnetic field around it. The direction and strength of this magnetic field will change with the change of the audio current. Subsequently, the speaker's voice coil is in a fixed magnetic field generated by a permanent magnet 18. The magnetic field generated by the voice coil interacts with the magnetic field of the permanent magnet 18. According to the left-hand rule, a force will be generated. The magnitude and direction of this force are related to the magnitude and direction of the audio current. Since the audio current is an alternating current that changes with time, the force on the voice coil is also constantly changing. This causes the voice coil to reciprocate in the magnetic field. The vibration pushes the air to produce sound. The voice coil is connected to a conical paper cone 11 and a diaphragm 21. The vibration of the voice coil will drive the paper cone 11 and the diaphragm 21 to vibrate together. The vibration of the paper cone and the diaphragm 21 will push the surrounding air, causing changes in the air's density and forming sound waves. These sound waves propagate in all directions with air as the medium, completing the speaker's sound production.

[0046] During this process, the dustproof net 6 installed at the end of the explosion-proof shell 1 can effectively prevent dust, powder and other impurities from the external environment from entering its interior, ensuring the sound quality of the speaker and extending its service life. At the same time, the dustproof net 6 is magnetically fixed to the mounting groove 10 through the magnetic ring plate 5, which facilitates the quick disassembly and cleaning of the dustproof net 6 by the staff. Meanwhile, the four sets of retaining ring plates 7 on one side of the connecting plate 4 can limit the magnetic ring plate 5, further ensuring the stability of the dustproof net 6 after installation. At the same time, the explosion-proof shell 1, reinforcing column 3, reinforcing frame 2 and reinforcing ring plate 12 installed on the outer wall of the inner shell 13 can effectively improve the strength of the entire speaker, giving the entire speaker good explosion-proof capability.

[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An outdoor explosion-proof loudspeaker with good dustproof effect, comprising an inner shell (13), characterized in that, The inner shell (13) is provided with a permanent magnet (18). The outer walls of the permanent magnet (18) are respectively provided with a first iron plate (15) and a second iron plate (19). An iron column (16) is fixedly connected to one side of the outer wall of the first iron plate (15). One end of the iron column (16) passes through the center of the permanent magnet (18). A paper tube (17) is sleeved on the outer circumference of the permanent magnet (18). A copper coil (20) is wound around the outer circumference of the paper tube (17). A paper disc (11) is fixedly connected to one end of the paper tube (17). The cross-section of the paper disc (11) is trumpet-shaped. A vibrating diaphragm (21) is provided inside the paper disc (11). An explosion-proof component is provided on the outside of the inner shell (13). A dustproof component is provided at one end of the paper tray (11).

2. The outdoor explosion-proof loudspeaker with good dustproof effect according to claim 1, characterized in that, The explosion-proof assembly includes an explosion-proof shell (1) fixedly connected to the outer circumferential wall of the inner shell (13), and a partition (14) fixedly connected to the inner circumferential wall of the explosion-proof shell (1). The partition (14), the explosion-proof shell (1), and the inner shell (13) surround an explosion-proof cavity.

3. The outdoor explosion-proof loudspeaker with good dustproof effect according to claim 2, characterized in that, A reinforcing frame (2) is fixedly connected to one side of the outer wall of the explosion-proof shell (1), and the cross-section of the reinforcing frame (2) is cross-shaped.

4. The outdoor explosion-proof loudspeaker with good dustproof effect according to claim 3, characterized in that, One side of the explosion-proof shell (1) is fixedly connected to a reinforcing ring plate (12) that spreads outward at equal distances. The reinforcing ring plate (12) is fixedly connected to the reinforcing frame (2). One side of the outer wall of the reinforcing frame (2) is fixedly connected to a reinforcing column (3). The outer circumferential wall of the reinforcing column (3) is closely attached to the outer circumferential wall of the explosion-proof shell (1).

5. The outdoor explosion-proof loudspeaker with good dustproof effect according to claim 4, characterized in that, One end of the explosion-proof shell (1) is fixedly connected to a reinforcing plate (9), and the reinforcing column (3) is fixedly connected to the reinforcing plate (9).

6. The outdoor explosion-proof loudspeaker with good dustproof effect according to claim 5, characterized in that, The four corners of the reinforcing plate (9) are provided with fixing screws (8), and the reinforcing plate (9) is fixedly connected to the connecting plate (4) through the fixing screws (8).

7. The outdoor explosion-proof loudspeaker with good dustproof effect according to claim 6, characterized in that, The dustproof component includes a mounting groove (10) formed on one side of the connecting plate (4). A magnetic ring plate (5) is adsorbed inside the mounting groove (10). The magnetic ring plate (5) cooperates with the mounting groove (10). A dustproof net (6) is fixedly connected to the inner circumference of the magnetic ring plate (5).

8. The outdoor explosion-proof loudspeaker with good dustproof effect according to claim 7, characterized in that, A retaining ring plate (7) is fixedly connected to one side of the connecting plate (4). The cross-section of the retaining ring plate (7) is L-shaped, and the retaining ring plates (7) are distributed in equal-distance circles on one side of the connecting plate (4).

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