A microphone discharge device with double protection structure

Abstract

This utility model relates to the field of microphone technology and discloses a microphone discharge device with a dual protection structure, including a discharge base. This microphone discharge device with a dual protection structure utilizes a complete discharge path formed by a grounding plate, a discharge component, and a grounding terminal. When static electricity accumulates on the surface of the microphone body, the static electricity is conducted to the discharge component through the grounding plate that abuts against the microphone shell. A Zener diode inside the discharge component's package clamps the static voltage, limiting it to a safe range. Subsequently, a current-limiting resistor limits the discharge current to prevent damage to the components from large currents. Finally, the static electricity is safely discharged to the ground through the grounding terminal connected to the current-limiting resistor. This effectively discharges static electricity, reducing the probability of microphone failure due to static electricity and significantly extending the microphone's lifespan in harsh environments such as industrial control and outdoor communication. This enhances the practicality of the microphone discharge device with a dual protection structure.

Description

Technical Field

[0001] This utility model relates to the field of microphone technology, and in particular to a microphone discharge device with a dual protection structure. Background Technology

[0002] A microphone, also known as a transducer, microphone, or microphone, is an energy conversion device that converts sound signals into electrical signals. In voice devices, such as walkie-talkies or video intercoms, as well as electronic products with voice recognition functions, such as stereos, game consoles, or home appliances, microphone components are installed to achieve sound recording in order to realize their voice functions.

[0003] Existing patent application publication number CN219145608U discloses a microphone assembly, including a circular frame. The outer periphery of the circular frame has an arc-shaped through groove, and a disassembly plate is nested in the arc-shaped through groove. The outer periphery of the circular frame has symmetrically arranged rectangular grooves, and a limiting frame is nested in the rectangular groove. The inner walls of the limiting frames are rotatably connected to telescopic rods via pins. A locking block is installed at the end of the telescopic rod. The microphone body is placed inside the circular frame, and a circular ring overlaps the inner periphery of the circular frame. A dustproof plate is fixedly installed on the inner periphery of the circular ring, and the outer periphery of the circular ring has a locking groove that matches the locking block. The surface of the circular ring has symmetrically arranged lifting grooves. This utility model has dust isolation, preventing dust from entering the assembly and adhering to the microphone surface, thus affecting the microphone's sound acquisition effect. It is also convenient for installation and disassembly, and cleaning and maintenance are relatively easy.

[0004] However, in harsh environments such as industrial control and outdoor communication, the microphone is prone to failure due to insufficient electrostatic protection, which requires frequent microphone replacement and reduces its effectiveness.

[0005] Therefore, we propose a microphone discharge device with a dual protection structure. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a microphone discharge device with a dual protection structure.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A microphone discharge device with a dual protection structure includes a discharge base, a microphone positioning groove at the upper end of the discharge base, a grounding plate embedded inside the microphone positioning groove, a discharge component at the middle of the lower end of the grounding plate, and a grounding terminal at the lower end of the discharge component.

[0009] As a further embodiment of this utility model: the discharge component includes an encapsulation body, the middle part of the lower end of the grounding piece is electrically connected to one end of the encapsulation body, and the other end of the encapsulation body is electrically connected to a grounding terminal.

[0010] As a further improvement of this invention: the package contains a current-limiting resistor and a Zener diode; one end of the current-limiting resistor is electrically connected to a grounding plate, the other end of the current-limiting resistor is electrically connected to one end of the Zener diode, and the other end of the Zener diode is electrically connected to a grounding terminal. The Zener diode can clamp the electrostatic voltage and limit it to a safe range. Subsequently, the current-limiting resistor limits the discharge current to prevent large currents from damaging the components.

[0011] As a further improvement of this utility model: a signal pin is provided at the lower end of the discharge base on one side of the grounding terminal. An insulating bushing is provided on the outer end of the signal pin. The signal pin can transmit signals. The polytetrafluoroethylene insulating bushing provided on the outer end of the signal pin can effectively isolate the signal pin from the grounding structure, prevent signal interference, and ensure stable signal transmission.

[0012] As a further improvement of this utility model: the microphone body is snapped into the inside of the microphone positioning slot. The microphone body and the microphone positioning slot are the same size. The signal end at the lower end of the microphone body is aligned with and connected to the signal pin. The grounding plate abuts against the outer shell of the microphone body. The microphone positioning slot and the microphone body are matched in size, which can achieve precise positioning and ensure reliable connection between the microphone shell and the grounding plate, and between the signal end and the signal pin, thereby reducing the risk of failure due to improper installation.

[0013] As a further improvement of this utility model: the upper end of the microphone body is provided with a plurality of acoustic holes, and a metal dustproof mesh is provided inside the acoustic holes. The metal dustproof mesh inside the acoustic holes can intercept dust and impurities, reducing the impact of dust on the internal diaphragm and other components of the microphone.

[0014] As a further improvement of this utility model: a plurality of the acoustic holes are arranged in a ring array at the upper end of the microphone body, and the insulating bushing is made of polytetrafluoroethylene.

[0015] Compared with the prior art, this utility model provides a microphone discharge device with a dual protection structure, which has the following beneficial effects:

[0016] 1. This utility model, through a complete discharge path formed by a grounding plate, a discharge component, and a grounding terminal, allows static electricity to accumulate on the surface of the microphone body. When static electricity accumulates, it is conducted to the discharge component through the grounding plate that abuts against the microphone shell. The Zener diode inside the package of the discharge component clamps the static voltage, limiting it to a safe range. Subsequently, a current-limiting resistor limits the discharge current to prevent large currents from damaging the components. Finally, the static electricity is safely discharged to the ground through the grounding terminal connected to the current-limiting resistor. This effectively discharges static electricity, reducing the probability of microphone failure due to static electricity, significantly extending the service life of the microphone in harsh environments such as industrial control and outdoor communication, and improving the practicality of the microphone discharge device with a dual protection structure.

[0017] 2. In this utility model, the polytetrafluoroethylene insulating bushing outside the signal pin has strong insulation performance, which can avoid interference from the grounding structure during signal transmission and ensure clear sound quality. The microphone positioning groove matches the size of the microphone body, which can achieve precise positioning and ensure reliable connection between the microphone shell and the grounding plate, and between the signal terminal and the signal pin, reducing the risk of failure due to improper installation. The metal dustproof mesh inside the acoustic hole can intercept dust and impurities, reduce the impact of dust on the internal diaphragm and other components of the microphone, extend the maintenance cycle, and improve the performance of the microphone discharge device with dual protection structure.

[0018] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a microphone discharge device with a dual protection structure proposed in this utility model.

[0020] Figure 2 This is a cross-sectional structural diagram of a microphone discharge device with a dual protection structure proposed in this utility model.

[0021] Figure 3 This is an exploded structural diagram of a microphone discharge device with a dual protection structure proposed in this utility model.

[0022] Figure 4 This is a schematic diagram of the grounding plate, discharge assembly, and grounding terminal structure of a microphone discharge device with a dual protection structure proposed in this utility model.

[0023] In the diagram: 1. Discharge base; 2. Microphone positioning slot; 3. Grounding plate; 4. Discharge assembly; 41. Package; 42. Current limiting resistor; 43. Zener diode; 5. Grounding terminal; 6. Signal pin; 7. Insulating bushing; 8. Microphone body; 9. Acoustic hole; 10. Metal dustproof mesh. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0026] Example: Please refer to Figures 1-4 This utility model provides a technical solution:

[0027] A microphone discharge device with a dual protection structure includes a discharge base 1, a microphone positioning groove 2 is provided at the upper end of the discharge base 1, a grounding plate 3 is embedded inside the microphone positioning groove 2, a discharge component 4 is provided at the middle of the lower end of the grounding plate 3, and a grounding terminal 5 is provided at the lower end of the discharge component 4.

[0028] In this embodiment, the preferred discharge component 4 includes an encapsulation body 41, with the middle part of the lower end of the grounding piece 3 electrically connected to one end of the encapsulation body 41, and the other end of the encapsulation body 41 electrically connected to the grounding terminal 5.

[0029] In this embodiment, the package 41 preferably contains a current-limiting resistor 42 and a Zener diode 43. One end of the current-limiting resistor 42 is electrically connected to the grounding plate 3, and the other end of the current-limiting resistor 42 is electrically connected to one end of the Zener diode 43. The other end of the Zener diode 43 is electrically connected to the grounding terminal 5. The Zener diode 43 can clamp the electrostatic voltage and limit the voltage within a safe range. Subsequently, the current-limiting resistor 42 limits the discharge current to prevent large current from damaging the components.

[0030] In this embodiment, preferably, a signal pin 6 is provided at the lower end of the discharge base 1 on one side of the grounding terminal 5. An insulating bushing 7 is sleeved on the outer end of the signal pin 6. Signals can be transmitted through the signal pin 6. The polytetrafluoroethylene insulating bushing 7 sleeved on the outer end of the signal pin 6 can effectively isolate the signal pin 6 from the grounding structure, prevent signal interference, and ensure stable signal transmission.

[0031] In this embodiment, preferably, the microphone body 8 is snapped into the inside of the microphone positioning slot 2. The microphone body 8 is the same size as the microphone positioning slot 2. The signal end at the lower end of the microphone body 8 is aligned with and connected to the signal pin 6. The grounding plate 3 abuts against the outer shell of the microphone body 8. The microphone positioning slot 2 and the microphone body 8 are matched in size, which can achieve precise positioning and ensure reliable connection between the microphone shell and the grounding plate 3, and between the signal end and the signal pin 6, reducing the risk of failure due to improper installation.

[0032] In this embodiment, the upper end of the preferred microphone body 8 is provided with a plurality of acoustic holes 9, and a metal dustproof mesh 10 is provided inside the acoustic holes 9. The metal dustproof mesh 10 inside the acoustic holes 9 can intercept dust and impurities, reducing the impact of dust on the internal diaphragm and other components of the microphone.

[0033] In this embodiment, a plurality of the acoustic holes 9 are preferably arranged in a ring array at the upper end of the microphone body 8, and the insulating bushing 7 is made of polytetrafluoroethylene.

[0034] Working principle: In this embodiment, a microphone discharge device with a dual protection structure is used by inserting the microphone body 8 into the microphone positioning groove 2 at the upper end of the discharge base 1. The microphone body 8 and the microphone positioning groove 2 are matched in size to achieve precise positioning. At this time, the outer shell of the microphone body 8 is in close contact with the grounding piece 3 embedded in the microphone positioning groove 2. At the same time, the signal end at the lower end of the microphone body 8 is aligned with and connected to the signal pin 6 at the lower end of the discharge base 1 to complete the electrical connection.

[0035] When static electricity accumulates on the surface of the microphone body 8, it is conducted to the discharge assembly 4 through the grounding plate 3 that abuts against the microphone shell. Inside the package 41 of the discharge assembly 4, the Zener diode 43 first clamps the static voltage, limiting it to a safe range. Then, the current-limiting resistor 42 limits the discharge current to prevent large current from damaging the components. Finally, the static electricity is safely discharged to the ground through the grounding terminal 5 connected to the current-limiting resistor 42. After the microphone body 8 converts the sound signal into an electrical signal, it is transmitted to the external circuit through the signal pin 6. The polytetrafluoroethylene insulating bushing 7 sleeved on the outer end of the signal pin 6 can effectively isolate the signal pin 6 from the grounding structure, prevent signal interference, and ensure stable signal transmission. Several acoustic holes 9 arranged in a ring array at the upper end of the microphone body 8 ensure that the sound signal enters the microphone smoothly. The metal dustproof mesh 10 inside the acoustic holes 9 can intercept dust and other impurities, preventing them from entering the microphone and affecting the sound quality and component performance.

[0036] 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. A microphone discharge device with a dual protection structure, comprising a discharge base (1), characterized in that: The upper end of the discharge base (1) is provided with a microphone positioning groove (2), and a grounding plate (3) is embedded inside the microphone positioning groove (2). A discharge component (4) is provided in the middle of the lower end of the grounding plate (3), and a grounding terminal (5) is provided at the lower end of the discharge component (4).

2. The microphone discharge device with a dual protection structure according to claim 1, characterized in that: The discharge assembly (4) includes an encapsulation body (41), the middle part of the lower end of the grounding piece (3) is electrically connected to one end of the encapsulation body (41), and the other end of the encapsulation body (41) is electrically connected to the grounding terminal (5).

3. The microphone discharge device with a dual protection structure according to claim 2, characterized in that: The package (41) contains a current-limiting resistor (42) and a Zener diode (43). One end of the current-limiting resistor (42) is electrically connected to the grounding plate (3), and the other end of the current-limiting resistor (42) is electrically connected to one end of the Zener diode (43). The other end of the Zener diode (43) is electrically connected to the grounding terminal (5).

4. The microphone discharge device with a dual protection structure according to claim 1, characterized in that: The lower end of the discharge base (1) is provided with a signal pin (6) on one side of the grounding terminal (5), and the outer end of the signal pin (6) is covered with an insulating bushing (7).

5. The microphone discharge device with a dual protection structure according to claim 4, characterized in that: The microphone positioning slot (2) is fitted with a microphone body (8); the microphone body (8) is the same size as the microphone positioning slot (2), the signal end of the lower end of the microphone body (8) is aligned with the signal pin (6) and connected, and the grounding piece (3) abuts against the outer shell of the microphone body (8).

6. The microphone discharge device with a dual protection structure according to claim 5, characterized in that: The upper end of the microphone body (8) is provided with a plurality of acoustic holes (9), and a metal dustproof mesh (10) is provided inside the plurality of acoustic holes (9).

7. A microphone discharge device with a dual protection structure according to claim 6, characterized in that: Several acoustic holes (9) are arranged in a ring array at the upper end of the microphone body (8), and the insulating bushing (7) is made of polytetrafluoroethylene.

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