An online acoustic module with quick replacement of waterproof sound permeable membrane structure

Abstract

The utility model discloses an online acoustic module with waterproof sound -transmitting membrane structure of quick replacement, including acoustic module main part, microphone FPA board, waterproof sound -transmitting membrane and magnetic formula fixing structure. The acoustic module main part is inlayed with first annular strong magnetic sheet at microphone FPA board fixed surface, and waterproof sound -transmitting membrane is compacted on FPA board through pressing plate, and the inlayed second annular strong magnetic sheet in pressing plate realizes quick dismounting with magnetic attraction principle. Module adopts the cooperation of positioning column and positioning hole to ensure installation accuracy, and is equipped with foamed silica gel O ring and is enhanced sealed dustproof performance. The handle of pressing plate design is convenient for operation, and the front shell adopts light weight aluminum alloy material to reduce acoustic interference. The utility model discloses through magnetic formula structure simplifies the replacement process of waterproof sound -transmitting membrane, improves maintenance efficiency, guarantees the stability and sealing property of connection simultaneously, and is applicable to the long -term reliable acoustic monitoring demand in industrial environment.

Description

Technical Field

[0001] This utility model belongs to the field of online acoustic module technology, and in particular relates to an online acoustic module with a quick-change waterproof and sound-permeable membrane structure. Background Technology

[0002] Online acoustic imagers play a crucial role in industrial equipment fault diagnosis and noise monitoring. However, the abundant micron-sized dust particles present in industrial environments easily clog the waterproof and acoustically permeable membrane protecting the microphone. Once blocked, sound propagation is impeded, weakening or distorting the sound signal received by the microphone, preventing the acoustic module from accurately analyzing sound data and affecting detection results and reliability. Currently, most online acoustic modules use fixed or traditional snap-on installations for their waterproof and acoustically permeable membranes, making replacement cumbersome, time-consuming, and labor-intensive, failing to meet the needs of rapid equipment maintenance in industrial production. Utility Model Content

[0003] The purpose of this invention is to provide an online acoustic module with a quick-change waterproof and sound-permeable membrane structure to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the specific technical solution of this utility model for an online acoustic module with a quick-replacement waterproof and sound-permeable membrane structure is as follows:

[0005] An online acoustic module with a quick-change waterproof and sound-permeable diaphragm structure includes an acoustic module body, a microphone installed inside the acoustic module body, a microphone FPA board mounted on the acoustic module body, a first annular strong magnetic sheet embedded in the fixing surface of the microphone FPA board, a waterproof and sound-permeable diaphragm at the front end of the microphone FPA board, the waterproof and sound-permeable diaphragm being pressed onto the microphone FPA board by a pressure plate, a second annular strong magnetic sheet embedded in the pressure plate, the second annular strong magnetic sheet and the first annular strong magnetic sheet in the acoustic module body tightly fixing the waterproof and sound-permeable diaphragm by the principle of opposite pole attraction, the acoustic module body having a sealing ring groove, a foamed silicone O-ring inside the sealing ring groove, and the pressure plate simultaneously pressing the foamed silicone O-ring to achieve a dustproof effect.

[0006] Furthermore, the acoustic module body includes an acoustic module front shell and an acoustic module rear shell, the microphone is installed inside the acoustic module rear shell, the microphone FPA board is installed on the acoustic module front shell, and the acoustic module front shell covers the acoustic module rear shell.

[0007] Furthermore, the front shell of the acoustic module has a fixing groove, and the first annular strong magnetic sheet is embedded in the fixing groove of the front shell of the acoustic module.

[0008] Furthermore, the microphone FPA board has positioning posts on its surface, and the waterproof and acoustically permeable membrane has positioning holes, which are aligned and positioned with the positioning posts on the microphone FPA board.

[0009] Furthermore, the pressure plate is provided with a microphone hole, and the back of the pressure plate has a fixing groove. The second annular strong magnetic sheet is embedded in the fixing groove of the pressure plate. The front of the pressure plate also has a pressure plate handle for pulling the pressure plate out of the front shell of the acoustic module.

[0010] Furthermore, the front shell of the acoustic module has a sealing ring groove, and the foamed silicone O-ring is installed in the sealing ring groove of the front shell of the acoustic module, located between the waterproof and sound-permeable membrane and the pressure plate.

[0011] Furthermore, both the first and second annular strong magnetic sheets are permanent magnets, and are uniformly distributed in a circular shape.

[0012] Furthermore, the frame of the front shell of the acoustic module is made of lightweight, high-strength aluminum alloy with a thickness of no more than 3mm.

[0013] Furthermore, the front shell of the acoustic module is provided with a positioning groove, and the edge of the pressure plate is provided with a positioning protrusion that matches the positioning groove. The positioning of the pressure plate is achieved through the cooperation of the positioning groove and the positioning protrusion.

[0014] The online acoustic module with a quick-change waterproof and sound-permeable membrane structure of this utility model has the following advantages:

[0015] 1. This utility model adopts a magnetic structure design. When replacing the waterproof and acoustically permeable membrane, simply remove the waterproof and acoustically permeable membrane unit from the microphone FPA board, and then place the new waterproof and acoustically permeable membrane unit close to the microphone FPA board. The installation can be completed by using magnetic force. The operation is simple and convenient, which greatly shortens the replacement time of the waterproof and acoustically permeable membrane and improves the equipment maintenance efficiency.

[0016] 2. The magnetic connection method eliminates the need for complicated disassembly tools and cumbersome operating procedures, reducing the risk of damage to other components of the acoustic module due to improper disassembly, lowering maintenance costs, and extending the service life of the acoustic module.

[0017] 3. The matching design of the positioning groove and positioning protrusion ensures accurate installation of the waterproof and acoustically permeable membrane unit, avoiding the impact of installation position deviation on sound reception; and the evenly distributed ring-shaped strong magnetic sheet ensures that the waterproof and acoustically permeable membrane unit is firmly attached, maintaining stability even under equipment vibration in industrial environments, ensuring the normal operation of the acoustic module. Attached Figure Description

[0018] Figure 1 Axonometric drawing of an online acoustic module;

[0019] Figure 2 A front view of the online acoustic module;

[0020] Figure 3 A cross-sectional view and a magnified partial view of the online acoustic module;

[0021] Figure 4 Exploded view of the online acoustic module;

[0022] Explanation of reference numerals in the attached drawings: 1; Acoustic module body; 11; Acoustic module front shell; 12; Acoustic module rear shell; 2; Microphone FPA board; 21; Positioning post; 3; First annular strong magnetic sheet; 4; Waterproof and sound-permeable membrane; 41; Positioning hole; 5; Pressure plate; 51; Microphone hole; 52; Pressure plate handle; 6; Second annular strong magnetic sheet; 7; Foamed silicone O-ring. Detailed Implementation

[0023] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of an online acoustic module with a quickly replaceable waterproof and sound-permeable membrane structure.

[0024] This utility model discloses an online acoustic module with a quick-change waterproof and sound-permeable membrane structure, comprising an acoustic module body 1, a microphone installed inside the acoustic module body 1, a microphone FPA board 2 installed on the acoustic module body 1, a first annular strong magnetic sheet 3 embedded on the fixing surface of the microphone FPA board 2, a waterproof and sound-permeable membrane 4 provided at the front end of the microphone FPA board 2, the waterproof and sound-permeable membrane 4 being pressed onto the microphone FPA board 2 by a pressure plate 5, a second annular strong magnetic sheet 6 embedded in the pressure plate 5, the second annular strong magnetic sheet 6 and the first annular strong magnetic sheet 3 in the acoustic module body 1 being tightly fixed to the waterproof and sound-permeable membrane 4 by the principle of opposite poles attracting each other, the acoustic module body 1 having a sealing ring groove, and a foamed silicone O-ring 7 inside the sealing ring groove, the pressure plate 6 simultaneously pressing the foamed silicone O-ring 7 to achieve a better dustproof effect.

[0025] The acoustic module body 1 includes a front shell 11 and a rear shell 12. A microphone is installed inside the rear shell 12, and a microphone FPA board 2 is installed on the front shell 11. The front shell 11 covers the rear shell 12. The front shell 11 has a fixing groove, and a first annular strong magnetic sheet 3 is embedded in the fixing groove. The microphone FPA board 2 has positioning posts 21 on its surface, and a waterproof and acoustically permeable membrane 4 has positioning holes 41. The positioning holes 41 are aligned and positioned with the positioning posts 21 on the microphone FPA board 2.

[0026] The pressure plate 5 has a microphone hole 51, and a fixing groove on its back. The second annular strong magnet 6 is embedded in the fixing groove of the pressure plate 4. The pressure plate 5 also has a pressure plate handle 52 on its front, which is used to pull the pressure plate 5 out of the front shell 11 of the acoustic module. The pressure plate 5 uses magnetic attraction to press the waterproof and sound-permeable membrane 4 onto the microphone FPA plate 2. The waterproof and sound-permeable membrane 4 is used to cover the microphone hole 51, serving a waterproof and sound-permeable function.

[0027] The front shell 11 of the acoustic module has a sealing ring groove. The foamed silicone O-ring 7 is installed in the sealing ring groove of the front shell 11 of the acoustic module, located between the waterproof and sound-permeable membrane 4 and the pressure plate 5, to enhance the dustproof effect.

[0028] The first annular strong magnetic sheet 3 and the second annular strong magnetic sheet 6 are both permanent magnets, and are evenly distributed in a circular shape to ensure the stability and reliability of adsorption.

[0029] The frame of the acoustic module front shell 11 is made of lightweight, high-strength aluminum alloy with a thickness of no more than 3mm to reduce the impact on sound propagation.

[0030] The front shell 11 of the acoustic module is provided with a positioning groove, and the edge of the pressure plate 5 is provided with a positioning protrusion that matches the positioning groove. The positioning of the pressure plate 5 is achieved through the cooperation of the positioning groove and the positioning protrusion, so as to ensure the accuracy of installation.

[0031] Assembly steps:

[0032] 1. Embed the first annular strong magnetic sheet 3 into the fixing groove of the front shell 11 of the acoustic module.

[0033] 2. Fix the microphone FPA board 2 onto the front shell 11 of the acoustic module, ensuring that it is in close contact with the first annular strong magnetic sheet 3.

[0034] 3. Install the foamed silicone O-ring 7 into the sealing groove of the front shell 11 of the acoustic module.

[0035] 4. Embed the second annular strong magnetic sheet 6 into the fixing groove of the pressure plate 5.

[0036] 5. Align the positioning hole 41 of the waterproof and sound-permeable membrane 4 with the positioning post 21 on the microphone FPA board 2.

[0037] 6. Then, the pressure plate 5 is embedded into the positioning groove of the front shell 11 of the acoustic module through the positioning protrusion, and the waterproof and sound-permeable membrane 4 is tightly fixed by the principle of attraction between opposite poles of the first annular strong magnetic sheet 3 and the second annular strong magnetic sheet 6.

[0038] Replacement steps:

[0039] 1. Remove the pressure plate 5 from the front shell 11 of the acoustic module using the pressure plate handle 53.

[0040] 2. Remove the old waterproof and sound-permeable membrane.

[0041] 3. Align the new waterproof and sound-permeable membrane 4 with the positioning post 21 and install it.

[0042] 4. Reinstall the pressure plate 5 inside the front shell 11 of the acoustic module and fix it with magnetic attraction to complete the replacement.

[0043] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. An online acoustic module with a quick-change waterproof and acoustically permeable diaphragm structure, comprising an acoustic module body (1), wherein a microphone is installed inside the acoustic module body (1), and a microphone FPA board (2) is installed on the acoustic module body (1), characterized in that, The acoustic module body (1) has a first annular strong magnetic sheet (3) embedded on the fixed surface of the microphone FPA board (2). The front end of the microphone FPA board (2) is provided with a waterproof and sound-permeable membrane (4). The waterproof and sound-permeable membrane (4) is pressed onto the microphone FPA board (2) by a pressure plate (5). The pressure plate (5) has a second annular strong magnetic sheet (6) embedded in it. The second annular strong magnetic sheet (6) and the first annular strong magnetic sheet (3) in the acoustic module body (1) are tightly fixed to the waterproof and sound-permeable membrane (4) by the principle of opposite attraction. The acoustic module body (1) has a sealing ring groove. The sealing ring groove has a foamed silicone O-ring (7). The pressure plate (5) presses down on the foamed silicone O-ring (7) to achieve a dustproof effect.

2. The online acoustic module with a quick-change waterproof and sound-permeable membrane structure according to claim 1, characterized in that, The acoustic module body (1) includes an acoustic module front shell (11) and an acoustic module rear shell (12). The microphone is installed inside the acoustic module rear shell (12), and the microphone FPA board (2) is installed on the acoustic module front shell (11). The acoustic module front shell (11) covers the acoustic module rear shell (12).

3. The online acoustic module with a quick-change waterproof and sound-permeable membrane structure according to claim 1, characterized in that, The front shell (11) of the acoustic module has a fixing groove, and the first annular strong magnetic sheet (3) is embedded in the fixing groove of the front shell (11) of the acoustic module.

4. The online acoustic module with a quick-change waterproof and sound-permeable membrane structure according to claim 1, characterized in that, The microphone FPA board (2) has a positioning post (21) on its surface, and the waterproof and sound-permeable membrane (4) has a positioning hole (41). The positioning hole (41) is aligned and positioned with the positioning post (21) on the microphone FPA board (2).

5. The online acoustic module with a quick-change waterproof and acoustically permeable membrane structure according to claim 1, characterized in that, The pressure plate (5) is provided with a microphone hole (51), and the back of the pressure plate (5) has a fixing groove. The second annular strong magnetic sheet (6) is embedded in the fixing groove of the pressure plate (5). The pressure plate (5) also has a pressure plate handle (52) in front, which is used to pull the pressure plate (5) out of the front shell (11) of the acoustic module.

6. The online acoustic module with a quick-change waterproof and sound-permeable membrane structure according to claim 1, characterized in that, The front shell (11) of the acoustic module has a sealing ring groove, and the foamed silicone O-ring (7) is installed in the sealing ring groove of the front shell (11) of the acoustic module, located between the waterproof sound-permeable membrane (4) and the pressure plate (5).

7. The online acoustic module with a quick-change waterproof and sound-permeable membrane structure according to claim 1, characterized in that, The first annular strong magnetic sheet (3) and the second annular strong magnetic sheet (6) are both permanent magnets, and are evenly distributed in a circular shape.

8. The online acoustic module with a quick-change waterproof and sound-permeable membrane structure according to claim 1, characterized in that, The frame of the front shell (11) of the acoustic module is made of lightweight, high-strength aluminum alloy with a thickness of no more than 3mm.

9. The online acoustic module with a quick-change waterproof and sound-permeable membrane structure according to claim 1, characterized in that, The acoustic module front shell (11) is provided with a positioning groove, and the edge of the pressure plate (5) is provided with a positioning protrusion that matches the positioning groove. The positioning of the pressure plate (5) is achieved through the cooperation of the positioning groove and the positioning protrusion.

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