Microphone module capable of reducing wind noise

Abstract

The utility model relates to the technical field of electronic products, and discloses a microphone module capable of reducing wind noise, which comprises a lower shell, an upper shell is arranged on the upper surface of the lower shell, a circuit board is arranged in the lower shell, the upper surface of the circuit board is electrically connected with a sound pickup, one side of the circuit board far away from the sound pickup is electrically connected with a low-pass filter, and the other side of the circuit board far away from the sound pickup is electrically connected with the low-pass filter. The upper surface of the sound pickup is fixedly connected with a terminal wire, the outer wall of the terminal wire is sleeved with a limiting ring, the limiting ring is arranged between the lower shell and the upper shell, and a noise reduction assembly is installed in the upper shell. According to the utility model, after the circuit board is covered by the lower shell and the upper shell, sound enters the buffer cavity through the pickup hole to change the direction of air flow for buffering, the sound is collected by the pickup and is cooperatively processed by the low-pass filter, so that the wind noise is effectively reduced, the practicability of the microphone is improved, the microphone can accurately pick up sound in various environments, and the sound quality is guaranteed; and the requirements of different scenes on audio acquisition are met.

Description

Technical Field

[0001] This utility model relates to the field of electronic product technology, and in particular to a microphone module for reducing wind noise. Background Technology

[0002] A microphone module is a functional module that integrates a microphone, amplifier, filter, control circuit, and other related electronic components. It can be independently applied to various electronic devices to achieve sound acquisition, processing, and transmission. Its structure and performance vary depending on the device and scenario requirements. Using wind-noise-canceling microphone modules is significant. They can improve voice quality and ensure accurate transmission of sound information in outdoor shooting, interviews, and communications in windy conditions; enhance user experience and promote smooth interaction in voice interaction devices such as smart headphones and voice assistants; meet high requirements in professional audio recording, broadcasting, and film and television production, helping to obtain high-quality audio materials; and improve the audio performance of electronic devices, enhancing their market competitiveness. For example, smartphones are favored by consumers because of their superior wind noise reduction capabilities, which give them an advantage in calls and recordings.

[0003] Existing microphone modules typically involve mounting the microphone module inside a housing. While the housing protects the microphone module, a pickup hole is opened on the side of the housing near the microphone to facilitate sound pickup. However, when used outdoors, sound can enter the microphone through the pickup hole due to strong airflow generated by the wind, causing popping noise. Therefore, a microphone module with reduced wind noise is proposed to solve the above problem. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a microphone module for reducing wind noise, aiming to improve the problem that the microphone module mounting housing used in the prior art is too simple in structure to achieve noise reduction for strong airflow outdoors, thus resulting in the inability to collect sound such as popping sounds.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a microphone module for reducing wind noise, comprising a lower housing, an upper housing disposed on the upper surface of the lower housing, a circuit board disposed inside the lower housing, a microphone electrically connected to the upper surface of the circuit board, a low-pass filter electrically connected to the side of the circuit board away from the microphone, a terminal wire fixedly connected to the upper surface of the microphone, a limiting ring sleeved on the outer wall of the terminal wire, the limiting ring being disposed between the lower housing and the upper housing, a noise reduction component installed inside the upper housing, and a locking component disposed between the lower housing and the upper housing;

[0006] The noise reduction component includes an L-shaped plate, one side of which is fixedly connected to the outer wall of the upper shell. A buffer cavity is provided between the L-shaped plate and the lower shell. A sound pickup hole is provided through the interior of the upper shell and is connected to the buffer cavity.

[0007] Furthermore, the locking assembly includes a sealing edge, one side of the outer wall of the sealing edge is fixedly connected to the lower surface of the upper housing, the outer wall of the sealing edge is slidably connected to the inside of the lower housing, a locking block is fixedly connected to the side of the upper housing away from the sealing edge, and a locking groove is provided inside the lower housing.

[0008] Furthermore, a sealing assembly is installed on the outer wall of the L-shaped plate, a plurality of support blocks are fixedly connected to the bottom of the inner wall of the lower housing, a fastening assembly is installed on the bottom of the inner wall of the lower housing, limit seats are fixedly connected to the four corners of the inner wall of the upper housing, the outer wall of the limit seats is slidably connected to the inner wall of the lower housing, support blocks are fixedly connected to the inner wall of the lower housing, support blocks one and support blocks two are disposed on the lower surface of the microphone, and fixing blocks one are fixedly connected to the inner walls of both the lower housing and the upper housing, with the outer walls of the two fixing blocks one abutting against the outer wall of the terminal wire.

[0009] Furthermore, the sealing assembly includes an extension block, the outer wall of which is fixedly connected to the lower surface of the L-shaped plate, and an installation block is fixedly connected to the inner wall of the lower housing, with a limit groove formed inside the installation block.

[0010] Furthermore, the fastening assembly includes a threaded seat, the lower surface of which is fixedly connected to the bottom of the inner wall of the lower housing, and a fastening bolt is threaded inside the threaded seat.

[0011] Furthermore, a plurality of mounting plates are fixedly connected to the outer wall of the lower housing, and the mounting plates are used to mount the lower housing.

[0012] Furthermore, the outer wall of the card block is slidably connected to the inner wall of the card slot, and the card block is used to connect the lower housing and the upper housing.

[0013] Furthermore, the outer wall of the extension block is slidably connected to the inner wall of the limiting groove, and the limiting groove is used to achieve a seal.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, after the circuit board is installed inside the lower housing, and then the upper housing is placed on top of the lower housing, when it is necessary to collect sound, the sound will first enter the buffer cavity through the pickup hole inside the upper housing, thereby changing the direction of airflow and creating a buffering effect. Then, after the sound is picked up by the microphone, it achieves efficient noise reduction through the cooperation of the low-pass filter, thereby improving the practicality of the microphone.

[0016] 2. In this utility model, after the extension block is inserted into the inner wall of the limiting groove and simultaneously pressed against the outer wall of the microphone, a sealing effect is achieved while fixing the microphone to prevent sound leakage. At this time, when the limiting seat is inserted into the lower housing, a quick positioning effect is achieved, enabling quick installation. Meanwhile, the circuit board can be quickly positioned and stabilized through the cooperation of support block one and support block two. Then, by passing the fastening bolt through the circuit board, the circuit board is fixed to the threaded seat, thereby stabilizing the circuit board for use and improving the practicality of the microphone. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a microphone module for reducing wind noise proposed in this utility model;

[0018] Figure 2 This is a schematic diagram showing the disassembled wind noise reduction microphone module proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the L-shaped plate portion of a microphone module for reducing wind noise proposed in this utility model.

[0020] Legend:

[0021] 1. Lower housing; 2. Upper housing; 3. Circuit board; 4. Microphone; 5. Low-pass filter; 6. Terminal wire; 7. Limiting ring; 8. L-shaped plate; 9. Buffer cavity; 10. Microphone hole; 11. Extension block; 12. Mounting block; 13. Limiting groove; 14. Sealing edge; 15. Locking block; 16. Locking slot; 17. Support block one; 18. Support block two; 19. Threaded seat; 20. Fastening bolt; 21. Fixing block one; 22. Limiting seat; 23. Mounting plate. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of a wind noise reduction microphone module, comprising a lower housing 1, which serves as the basic structure of the entire module, providing protection and installation space for internal components. An upper housing 2 is disposed on the upper surface of the lower housing 1, together forming the external protection of the module. A circuit board 3 is disposed inside the lower housing 1, serving as a key component for carrying and connecting other electronic components, acting as a bridge for signal transmission and processing. A microphone 4 is electrically connected to the upper surface of the circuit board 3, which is used to collect sound signals and is the core sound capture element of the microphone module. A low-pass filter 5 is electrically connected to the side of the circuit board 3 away from the microphone 4, which processes the sound signal, attenuates high-frequency signals, effectively reduces high-frequency interference such as wind noise, and improves sound quality. A terminal wire 6 is fixedly connected to the upper surface of the microphone 4, which is responsible for transmitting the sound signal collected by the microphone 4 or receiving power and control signals from the circuit board 3. A limiting ring 7 is fitted around the outer wall of the terminal wire 6. The limiting ring 7 is located between the lower housing 1 and the upper housing 2, and its function is to fix the position of the terminal wire 6 and prevent it from shaking or shifting and affecting signal transmission. A noise reduction component is installed inside the upper housing 2 to further reduce wind noise interference. A locking component is provided between the lower housing 1 and the upper housing 2 to facilitate the installation and fixation of the upper and lower housings.

[0024] The noise reduction assembly includes an L-shaped plate 8, one side of which is fixedly connected to the outer wall of the upper housing 2. A buffer cavity 9 is provided between the L-shaped plate 8 and the lower housing 1. The buffer cavity 9 buffers the air before it enters the pickup area, reducing wind speed and wind noise. A pickup hole 10 is provided through the interior of the upper housing 2, which is connected to the buffer cavity 9 and serves as the channel for external sound to enter the microphone 4. The locking assembly includes a sealing edge 14, one side of which is fixedly connected to the lower surface of the upper housing 2. The outer wall of the sealing edge 14 is slidably connected to the interior of the lower housing 1. Its function is to enhance the sealing of the connection between the upper and lower housings and prevent external dust, moisture, etc. from entering the interior and affecting the performance of the components. A locking block 15 is fixedly connected to the side of the upper housing 2 away from the sealing edge 14. A locking groove 16 is provided inside the lower housing 1. The outer wall of the locking block 15 is slidably connected to the inner wall of the locking groove 16. The locking block 15 is used to connect the lower housing 1 and the upper housing 2, making the connection tight and easy to assemble.

[0025] Reference Figure 1 , Figure 2 and Figure 3A sealing assembly is installed on the outer wall of the L-shaped plate 8. Multiple support blocks 17 are fixedly connected to the bottom of the inner wall of the lower housing 1. These support blocks 17 support the microphone 4, ensuring its stable installation within the housing. A fastening assembly is installed at the bottom of the inner wall of the lower housing 1. Limit seats 22 are fixedly connected to the four corners of the inner wall of the upper housing 2. The outer wall of the limit seats 22 is slidably connected to the inner wall of the lower housing 1, serving a positioning and guiding function during assembly of the upper and lower housings. Support blocks 28 are fixedly connected to the inner wall of the lower housing 1, positioned on the lower surface of the microphone 4, and together with support blocks 17, support the microphone 4. Fixing blocks 21 are fixedly connected to the inner walls of both the lower housing 1 and the upper housing 2. The outer walls of the two fixing blocks 21 are attached to the outer wall of the terminal wire 6, fixing the terminal wire 6 and preventing it from moving freely within the housing. The sealing assembly includes an extension block 11, whose outer wall is fixedly connected to the lower surface of the L-shaped plate 8. An installation block 12 is fixedly connected to the inner wall of the lower housing 1. A limiting groove 13 is formed inside the installation block 12. The outer wall of the extension block 11 is slidably connected to the inner wall of the limiting groove 13. The limiting groove 13 is used to achieve a seal, enhancing the sealing performance of the buffer chamber 9 and further reducing wind noise. The fastening assembly includes a threaded seat 19, whose lower surface is fixedly connected to the bottom of the inner wall of the lower housing 1. A fastening bolt 20 is threaded inside the threaded seat 19. The fastening bolt 20 can fix or adjust some internal components by cooperating with the threaded seat 19, ensuring their stability within the housing. Multiple mounting plates 23 are fixedly connected to the outer wall of the lower housing 1. The mounting plates 23 are used to mount the lower housing 1, facilitating the installation of the microphone module onto other devices or brackets.

[0026] Working principle: When installing the microphone module, first place the circuit board 3 on top of support block 17 and support block 28. Then, fix the circuit board 3 by passing the fastening bolt 20 through the threaded seat 19 to stabilize the circuit board 3. Next, the limiting ring 7 on one side of the terminal wire 6 is engaged between the lower housing 1 and the upper housing 2 to protect the terminal wire 6. Then, insert the upper housing 2 into the upper housing 2 through the limiting seat 22. Finally, the sealing edge 14 is engaged to achieve quick positioning and installation of the upper housing 2. At the same time, the locking block 15 will engage. The upper housing 2 is quickly fixed by the inner wall of the slot 16. Then, the extension block 11 is inserted into the inner wall of the limiting slot 13 by the L-shaped plate 8, thus achieving a sealing effect. When the microphone module is used for sound pickup, the airflow and sound are collected through the pickup hole 10 and enter the buffer cavity 9. The L-shaped plate 8 reduces the impact of the airflow, thus weakening the airflow and transmitting it to the microphone 4 side, thereby achieving the effect of reducing noise and picking up sound. The sound is then collected by the microphone 4 and processed by the low-pass filter 5, thereby further reducing wind noise.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A microphone module for reducing wind noise, comprising a lower housing (1), characterized in that: The upper surface of the lower housing (1) is provided with an upper housing (2), the lower housing (1) is provided with a circuit board (3), the upper surface of the circuit board (3) is electrically connected to a microphone (4), the side of the circuit board (3) away from the microphone (4) is electrically connected to a low-pass filter (5), the upper surface of the microphone (4) is fixedly connected with a terminal wire (6), the outer wall of the terminal wire (6) is sleeved with a limiting ring (7), the limiting ring (7) is provided between the lower housing (1) and the upper housing (2), the upper housing (2) is provided with a noise reduction component, and a locking component is provided between the lower housing (1) and the upper housing (2); The noise reduction component includes an L-shaped plate (8), one side of the outer wall of the L-shaped plate (8) is fixedly connected to one side of the outer wall of the upper shell (2), a buffer cavity (9) is provided between the L-shaped plate (8) and the lower shell (1), and a pickup hole (10) is provided through the interior of the upper shell (2), and the pickup hole (10) is connected to the buffer cavity (9).

2. The microphone module for reducing wind noise according to claim 1, characterized in that: The locking assembly includes a sealing edge (14), one side of the outer wall of the sealing edge (14) is fixedly connected to the lower surface of the upper housing (2), the outer wall of the sealing edge (14) is slidably connected to the inside of the lower housing (1), a locking block (15) is fixedly connected to the side of the upper housing (2) away from the sealing edge (14), and a locking groove (16) is opened inside the lower housing (1).

3. The microphone module for reducing wind noise according to claim 2, characterized in that: The outer wall of the L-shaped plate (8) is equipped with a sealing assembly. Multiple support blocks (17) are fixedly connected to the bottom of the inner wall of the lower housing (1). A fastening assembly is installed at the bottom of the inner wall of the lower housing (1). Limit seats (22) are fixedly connected to the four corners of the inner wall of the upper housing (2). The outer wall of the limit seat (22) is slidably connected to the inner wall of the lower housing (1). Support blocks (18) are fixedly connected to the inner wall of the lower housing (1). Support blocks (17) and support blocks (18) are set on the lower surface of the microphone (4). Fixing blocks (21) are fixedly connected to the inner walls of both the lower housing (1) and the upper housing (2). The outer walls of the two fixing blocks (21) are attached to the outer wall of the terminal wire (6).

4. A microphone module for reducing wind noise according to claim 3, characterized in that: The sealing assembly includes an extension block (11), the outer wall of which is fixedly connected to the lower surface of the L-shaped plate (8), and an mounting block (12) is fixedly connected to the inner wall of the lower housing (1), with a limiting groove (13) formed inside the mounting block (12).

5. A microphone module for reducing wind noise according to claim 4, characterized in that: The fastening assembly includes a threaded seat (19), the lower surface of which is fixedly connected to the bottom of the inner wall of the lower housing (1), and a fastening bolt (20) is threaded inside the threaded seat (19).

6. A microphone module for reducing wind noise according to claim 1, characterized in that: The lower housing (1) has multiple mounting plates (23) fixedly connected to its outer wall. The mounting plates (23) are used to mount the lower housing (1).

7. A microphone module for reducing wind noise according to claim 2, characterized in that: The outer wall of the card block (15) is slidably connected to the inner wall of the card slot (16), and the card block (15) is used to connect the lower housing (1) and the upper housing (2).

8. A microphone module for reducing wind noise according to claim 4, characterized in that: The outer wall of the extension block (11) is slidably connected to the inner wall of the limiting groove (13), which is used to achieve sealing.

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