A miniature microphone noise reduction packaging device

Abstract

The utility model relates to microphone noise reduction packaging field discloses a kind of miniature microphone noise reduction packaging devices, comprising: lower end cap, the upper end cap is bonded in the lower end cap top, and noise reduction packaging mechanism is arranged on the upper end cap;The noise reduction packaging mechanism includes noise reduction end, assembly cylinder, T block, silica gel connecting piece, silica gel torus, threaded tight cover and threaded cylinder;The assembly cylinder is clamped with upper end cap, and the T block is clamped with assembly cylinder, and the silica gel connecting piece is fixedly installed between T block and noise reduction end, and the silica gel torus is fixedly installed in the inside below of assembly cylinder, and the noise reduction end is abutted with the inside of silica gel torus, and the threaded tight cover is connected with the outside of assembly cylinder by thread.This utility model has the following advantages and effects: further improve the noise reduction effect of miniature microphone, and noise reduction end is packaged, and subsequent maintenance is conveniently removed.

Description

Technical Field

[0001] This utility model relates to the field of microphone noise reduction packaging technology, and in particular to a miniature microphone noise reduction packaging device. Background Technology

[0002] A miniature microphone, also known as a transducer or microphone, is an energy conversion device that converts sound signals into electrical signals.

[0003] In existing technologies, miniature microphones often generate various unwanted noises, such as resonance with objects, during actual use, resulting in poor sound quality and excessive background noise. Therefore, some miniature microphones are equipped with noise reduction heads, which use a separator inside the noise reduction head to reduce resonance caused by external airflow passing through the sound hole. However, the noise reduction effect still needs to be improved, and the noise reduction head is often integrated after packaging, making subsequent maintenance difficult. Therefore, it is necessary to design a miniature microphone noise reduction packaging device to solve the above problems.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a miniature microphone noise reduction packaging device to solve the above-mentioned problems.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a miniature microphone noise reduction packaging device, comprising: The lower end cover has an upper end cover bonded to its top, and the upper end cover is provided with a noise reduction and encapsulation mechanism. The noise reduction packaging mechanism includes a noise reduction end, an assembly cylinder, a T-block, a silicone connector, a silicone ring, a threaded clamping cap, and a threaded cylinder. The assembly cylinder is engaged with the upper end cover, the T-block is engaged with the assembly cylinder, the silicone connector is fixedly installed between the T-block and the noise reduction end, the silicone ring is fixedly installed inside the lower part of the assembly cylinder, the noise reduction end abuts against the inner side of the silicone ring, the threaded clamping cover is threadedly connected to the outer side of the assembly cylinder, the threaded clamping cover abuts against the T-block, the threaded cylinder is fixedly installed on the top of the upper end cover, and the threaded clamping cover is threadedly connected to the inner side of the threaded cylinder.

[0007] A further feature of this invention is that the noise reduction packaging mechanism further includes a separator and a baffle. The separator is fixedly installed in a ring at equal intervals inside the noise reduction end. The top of the baffle is fixedly connected to the upper end cover, and the bottom of the assembly cylinder abuts against the baffle.

[0008] A further feature of this invention is that a PCB board is bonded to the lower end cover, an ASIC chip and a micro motor system are bonded to the PCB board, the micro motor system and the ASIC chip are electrically connected by gold wire, and a wire hole is provided at the rear of the lower end cover.

[0009] A further feature of this invention is that the top of the upper cover has a pickup hole, and the assembly cylinder is fitted into the pickup hole.

[0010] By adopting the above technical solution, assembly is facilitated.

[0011] A further feature of this invention is that the top of the assembly cylinder is provided with multiple T-slots, and the T-blocks are engaged with the T-slots.

[0012] By adopting the above technical solution, it is convenient to carry out docking processing.

[0013] A further feature of this invention is that the bottom of the threaded sealing cap abuts against the upper cap.

[0014] By adopting the above technical solution, the damping pad provides greater friction, ensuring stability after screwing in.

[0015] A further feature of this invention is that the top outer side of the assembly cylinder is provided with an external thread, and the top inner side of the threaded abutment cover is provided with an internal thread. The threaded abutment cover is threadedly connected to the external thread on the assembly cylinder through the internal thread.

[0016] A further feature of this invention is that the inner side of the threaded cylinder is provided with an internal thread II, and the outer bottom of the threaded clamping cover is provided with an external thread II, and the threaded clamping cover is threadedly connected to the internal thread II on the threaded cylinder through the external thread II.

[0017] The beneficial effects of this utility model are: This invention utilizes a noise-reducing encapsulation mechanism. An annular separator blocks the source of airflow resonance, while a silicone connector and silicone ring absorb vibration energy and reduce sound wave amplitude. Combined with a fully sealed design, it comprehensively weakens resonance noise and environmental noise, significantly optimizing sound quality and reducing noise. The microphone does not need to be completely disassembled; the noise-reducing end can be removed simply by loosening the screw thread and tightening the cover, enabling cleaning, replacement, and other maintenance operations. After maintenance, it can be reversed for reassembly, reducing maintenance costs and operational difficulty. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a miniature microphone noise reduction packaging device proposed in this utility model.

[0020] Figure 2 This is a cross-sectional view of a miniature microphone noise reduction packaging device proposed in this utility model. Figure 1 .

[0021] Figure 3 This is a cross-sectional view of a miniature microphone noise reduction packaging device proposed in this utility model. Figure 2 .

[0022] Figure 4 yes Figure 1 A schematic diagram of part A in the diagram.

[0023] Figure 5 yes Figure 2 A schematic diagram of part B in the diagram.

[0024] In the diagram, 1. Lower end cap; 2. Upper end cap; 3. Noise reduction end; 4. Separator; 5. Sound pickup hole; 6. Assembly cylinder; 7. T-slot; 8. T-block; 9. Silicone connector; 10. Silicone ring; 11. Baffle; 12. Threaded clamping cover; 13. Threaded cylinder; 14. PCB board; 15. ASIC chip; 16. Micro motor system. Detailed Implementation

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0026] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This utility model provides a miniature microphone noise reduction packaging device, comprising: The lower end cover 1 is attached to the top of the upper end cover 2. It should be noted that the upper end cover 2 is attached by means of strong sealant to ensure the stability of the bonded part. The upper cover 2 is equipped with a noise reduction packaging mechanism. It should be noted that this further improves the noise reduction effect of the miniature microphone, and the noise reduction end 3 is easy to remove for maintenance after packaging. The noise reduction packaging mechanism includes a noise reduction end 3, an assembly cylinder 6, a T-block 8, a silicone connector 9, a silicone ring 10, a threaded clamping cover 12, and a threaded cylinder 13; The assembly cylinder 6 is snapped into the upper end cover 2, the T-block 8 is snapped into the assembly cylinder 6, the silicone connector 9 is fixedly installed between the T-block 8 and the noise reduction end 3, the silicone ring 10 is fixedly installed inside the lower part of the assembly cylinder 6, the noise reduction end 3 abuts against the inner side of the silicone ring 10, the threaded clamping cover 12 is threadedly connected to the outer side of the assembly cylinder 6, the threaded clamping cover 12 abuts against the T-block 8, the threaded cylinder 13 is fixedly installed on the top of the upper end cover 2, and the threaded clamping cover 12 is threadedly connected to the inner side of the threaded cylinder 13.

[0028] Through the above structure, the silicone connector 9 and silicone ring 10 further reduce the amplitude of sound waves and avoid resonance and noise transmission, thus further improving the noise reduction effect of the miniature microphone. When maintenance is required, the threaded clamping cover 12 is rotated to remove it from the threaded cylinder 13. Then, the threaded clamping cover 12 is pulled upward to move the assembly cylinder 6 out simultaneously. Next, the assembly cylinder 6 is held and the threaded clamping cover 12 is rotated to separate it from the assembly cylinder 6, releasing the restriction on the T-block 8. Then, the noise reduction end 3 and silicone connector 9 are pulled upward to remove the T-block 8 from the T-slot 7, allowing maintenance of the noise reduction end 3 and other components.

[0029] Specifically, the noise reduction packaging mechanism also includes a separator 4 and a baffle 11. The separator 4 is fixedly installed in a ring at equal intervals inside the noise reduction end 3. The top of the baffle 11 is fixedly connected to the upper end cover 2, and the bottom of the assembly cylinder 6 abuts against the baffle 11.

[0030] With the above structure, the baffle 11 can support and limit the assembly cylinder 6, and the separator 4 at the through hole of the noise reduction end 3 can reduce the resonance caused by the external airflow passing through the sound hole, thereby improving the noise reduction performance of the microphone.

[0031] Specifically, a PCB board 14 is bonded to the lower end cover 1, and an ASIC chip 15 and a micro-motor system 16 are bonded to the PCB board 14. The micro-motor system 16 and the ASIC chip 15 are electrically connected by gold wire. A wire hole is provided at the rear of the lower end cover 1. It should be noted that the bonding is done with die-attach adhesive. The micro-motor system 16 consists of a diaphragm, a back electrode, and a parallel plate capacitor. The diaphragm in the micro-motor system 16 can be used to convert sound signals into electrical signals. Then, the ASIC chip 15 amplifies the electrical signals, converts the electrical signals into digital signals, and then transmits them. This is the existing technology of miniature microphones and will not be elaborated here.

[0032] Specifically, the top of the upper cover 2 has a sound pickup hole 5, and the assembly cylinder 6 is engaged with the sound pickup hole 5. The top of the assembly cylinder 6 has multiple T-slots 7, and the T-block 8 is engaged with the T-slots 7. It should be noted that this is how the T-block 8 and the assembly cylinder 6 are assembled.

[0033] Specifically, the bottom of the threaded clamping cover 12 abuts against the upper end cover 2. The outer top of the assembly cylinder 6 is provided with an external thread, and the inner top of the threaded clamping cover 12 is provided with an internal thread. The threaded clamping cover 12 is threadedly connected to the external thread on the assembly cylinder 6 via the internal thread. The inner side of the threaded cylinder 13 is provided with an internal thread, and the outer bottom of the threaded clamping cover 12 is provided with an external thread. The threaded clamping cover 12 is threadedly connected to the internal thread on the threaded cylinder 13 via the external thread. It should be noted that the top inner wall and bottom of the threaded clamping cover 12 are both fixed... The fixed-mount damping pads on the inner wall of the top of the threaded clamping cover 12 abut against the T-block 8, which can apply a great deal of friction. This can ensure the stability of the threaded clamping cover 12 after it is tightened. The damping pads at the bottom of the threaded clamping cover 12 abut against the upper cover 2, which also applies a large amount of friction. This can further ensure the stability of the threaded clamping cover 12 after it is tightened, making it less likely for the threaded clamping cover 12 to rotate under force. This ensures the stability of the threaded clamping cover 12 in daily use. In addition, the internal thread one and the external thread two on the threaded clamping cover 12 have the same rotation direction.

[0034] Working principle: S1: Align the T-block 8 with the T-groove 7 on the top of the assembly cylinder 6 and snap it in, so that the bottom of the noise reduction end 3 is tightly abutted against the inner side of the silicone ring 10. Screw the threaded clamping cover 12 into the outer thread 1 on the outside of the assembly cylinder 6 through the inner thread 1 on the top of the inner side. Insert the assembly cylinder 6 into the pickup hole 5 of the upper end cover 2. Screw the outer thread 2 on the bottom of the outer side into the inner thread 2 on the threaded cylinder 13 on the top of the upper end cover 2 until the bottom of the assembly cylinder 6 abuts against the stop 11 of the upper end cover 2. After tightening, the damping pad on the inner wall of the top of the threaded clamping cover 12 abuts against the T-block 8, and the bottom damping pad is in contact with the surface of the upper end cover 2. Through the double thread engagement and damping friction, the noise reduction component is firmly fixed, avoiding loosening and displacement during use. S2: When an external sound signal enters through the pickup hole 5, it first passes through the annular partition 4 inside the noise reduction end 3. The partition 4 physically blocks the airflow, disrupting the continuous flow of air at the sound hole, effectively reducing the resonance noise generated by the airflow impact, and reducing the source of noise. The silicone connector 9 and the silicone ring 10 form a double buffer structure. The silicone material has good elasticity and vibration reduction properties, which can absorb the vibration energy in the process of sound wave transmission, reduce the amplitude of the sound wave, and prevent the vibration from being transmitted to the micro-motor system 16 through the mechanical structure, thereby reducing the transmission of resonance noise. At the same time, the tight contact between the silicone ring 10 and the noise reduction end 3 further blocks the path of noise propagation through the gap, improving the noise reduction effect. S3: When maintenance of the noise reduction end 3 is required, forcefully rotate the threaded clamping cover 12 to unscrew it from the threaded cylinder 13. Pull the threaded clamping cover 12 upward to drive the assembly cylinder 6 to be removed from the pickup hole 5 simultaneously. Rotate the threaded clamping cover 12 again to completely separate it from the assembly cylinder 6, releasing the limit on the T-block 8. Pull the noise reduction end 3 upward to drive the silicone connector 9 and the T-block 8 to move synchronously, so that the T-block 8 can be dislodged from the T-slot 7. The noise reduction end 3 can then be removed for cleaning, replacement, or repair of the noise reduction end 3 and other components. After maintenance, follow the reverse process to sequentially install the T-block 8, screw on the threaded clamping cover 12, and fix the assembly cylinder 6 to quickly complete the reset.

[0035] The present invention provides a detailed description of a miniature microphone noise reduction packaging device. Specific embodiments have been used to illustrate the principle and implementation of the present invention. These embodiments are merely illustrative and are intended to aid in understanding the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A miniature microphone noise reduction packaging device, characterized in that, include: The lower end cover (1) is attached to the top of the lower end cover (1) and the upper end cover (2) is provided with a noise reduction and encapsulation mechanism. The noise reduction packaging mechanism includes a noise reduction end (3), an assembly cylinder (6), a T-block (8), a silicone connector (9), a silicone ring (10), a threaded clamping cap (12), and a threaded cylinder (13). The assembly cylinder (6) is engaged with the upper end cover (2), the T-block (8) is engaged with the assembly cylinder (6), the silicone connector (9) is fixedly installed between the T-block (8) and the noise reduction end (3), the silicone ring (10) is fixedly installed inside the lower part of the assembly cylinder (6), the noise reduction end (3) abuts against the inner side of the silicone ring (10), the threaded clamping cover (12) is threadedly connected to the outer side of the assembly cylinder (6), the threaded clamping cover (12) abuts against the T-block (8), the threaded cylinder (13) is fixedly installed on the top of the upper end cover (2), and the threaded clamping cover (12) is threadedly connected to the inner side of the threaded cylinder (13).

2. The miniature microphone noise reduction packaging device according to claim 1, characterized in that, The noise reduction packaging mechanism also includes a separator (4) and a baffle (11). The separator (4) is fixedly installed in a ring at equal intervals inside the noise reduction end (3). The top of the baffle (11) is fixedly connected to the upper end cover (2). The bottom of the assembly cylinder (6) abuts against the baffle (11).

3. The miniature microphone noise reduction packaging device according to claim 1, characterized in that, A PCB board (14) is attached to the lower end cover (1). An ASIC chip (15) and a micro motor system (16) are attached to the PCB board (14). The micro motor system (16) and the ASIC chip (15) are electrically connected by gold wire. A wire hole is provided at the rear of the lower end cover (1).

4. The miniature microphone noise reduction packaging device according to claim 1, characterized in that, The top of the upper cover (2) is provided with a pickup hole (5), and the assembly cylinder (6) is fitted with the pickup hole (5).

5. The miniature microphone noise reduction packaging device according to claim 1, characterized in that, The top of the assembly cylinder (6) is provided with multiple T-slots (7), and the T-blocks (8) are engaged with the T-slots (7).

6. The miniature microphone noise reduction packaging device according to claim 1, characterized in that, The bottom of the threaded sealing cap (12) abuts against the upper cap (2).

7. The miniature microphone noise reduction packaging device according to claim 1, characterized in that, The outer top of the assembly cylinder (6) is provided with an external thread, and the inner top of the threaded abutment cover (12) is provided with an internal thread. The threaded abutment cover (12) is threadedly connected to the external thread on the assembly cylinder (6) through the internal thread.

8. A miniature microphone noise reduction packaging device according to claim 1, characterized in that, The inner side of the threaded cylinder (13) is provided with an internal thread II, and the outer bottom of the threaded sealing cover (12) is provided with an external thread II. The threaded sealing cover (12) is threadedly connected to the internal thread II on the threaded cylinder (13) through the external thread II.

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