CN214544763U

CN214544763U - Anti electromagnetic wave signal interference microphone

Info

Publication number: CN214544763U
Application number: CN202120660367.1U
Authority: CN
Inventors: 周玉海
Original assignee: Shenzhen Boyin Electroacoustic Technology Co ltd
Current assignee: Shenzhen Boyin Electroacoustic Technology Co ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-10-29
Anticipated expiration: 2031-03-30

Abstract

The utility model discloses an anti-electromagnetic wave signal interference microphone, which comprises a cylinder body, a PCB (printed Circuit Board), a conductive plate, a connecting wire, a first grounding end and a second grounding end, wherein the inner wall of the cylinder body is fixedly connected with a metal shell, the metal shell is electrically connected with the first grounding end, the inner wall of the metal shell is fixedly connected with a metal wire mesh grid, the inner wall of the metal wire mesh grid is fixedly connected with a shielding ring plate, the inner wall of the shielding ring plate is fixedly connected with a vibrating membrane, the inner wall of the cylinder body is fixedly connected with a fixed seat, the lower surface of the PCB is electrically connected with a PIN needle, the PCB and the second grounding end are electrically connected through a wire, the top end of the connecting wire is fixedly connected with a guide post, the top end of the guide post is fixedly connected with a conductive block, the device has good anti-interference effect through the arrangement of a series of structures, and simultaneously, when the connecting wire or a microphone component is damaged and needs to be replaced, convenient and fast disassembly and assembly.

Description

Anti electromagnetic wave signal interference microphone

Technical Field

The utility model relates to a microphone technical field specifically is an anti electromagnetic wave signal interference microphone.

Background

Microphones, known as microphones, are energy conversion devices for converting sound signals into electrical signals, also called microphones and microphones, and in the twentieth century, microphones are developed from the initial sound-electricity conversion through resistance to inductance-capacitance conversion, and a great number of new microphone technologies are gradually developed, including microphones such as aluminum strips and moving coils, and condenser microphones and electret microphones which are widely used at present, wherein the microphones are formed by transmitting sound vibration to a diaphragm of the microphone to push a magnet at the inner side to form a changing current, and the changing current is sent to a following sound processing circuit for amplification processing.

In the prior art, because the shell and the common earthing terminal of the microphone assembly, cause interference signal to enter into the microphone assembly from the metal casing very easily, cause the current sound problem (the audible noise of people appears promptly), the microphone structure that has now on the market is complicated, it is inconvenient to use, anti-interference effect is poor, it is not good to electromagnetic interference processing, the product all can produce noise because of high frequency electromagnetic wave interference, influence the communication quality, performance has been reduced, and current microphone connecting wire generally exists as an organic whole with the microphone, in case the microphone appears damaging need change or the connecting wire goes wrong, the connector lug is easy not hard up, lead to audio signal transmission unstable, must replace the connecting wire together, resources have been wasted so.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti electromagnetic wave signal interference microphone to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an anti-electromagnetic wave signal interference microphone comprises a barrel body, a PCB (printed Circuit Board), a conductive plate, a connecting wire, a first grounding end and a second grounding end, wherein an air inlet is formed in the upper surface of the barrel body, a metal shell is fixedly connected to the inner wall of the barrel body and is electrically connected with the first grounding end, a metal wire mesh grid is fixedly connected to the inner wall of the metal shell, a shielding ring plate is fixedly connected to the inner wall of the metal wire mesh grid, a vibrating membrane is fixedly connected to the inner wall of the shielding ring plate, a fixing seat is fixedly connected to the inner wall of the barrel body, the PCB is positioned on the upper surface of the fixing seat, a PIN needle is electrically connected to the lower surface of the PCB, the PCB is electrically connected with the second grounding end through a wire, two supporting plates are fixedly connected to the bottom wall of the barrel body, a guide column is fixedly connected to the top end of the connecting wire, and a conductive block is fixedly connected to the top end of the guide column, two the recess has all been seted up to the relative one side of backup pad, the inner wall fixedly connected with telescopic link of recess, the one end fixedly connected with wedge plate of recess is kept away from to the telescopic link.

Preferably, the upper surface of the barrel body is in threaded connection with a barrel head, the inner wall of the barrel head is provided with a dustproof net, and the barrel head is communicated with the air inlet.

Preferably, the lower surface fixed mounting of fixing base has a plurality of field effect transistor, and is a plurality of field effect transistor is equidistant setting.

Preferably, two the buffer slot has all been seted up to the relative one side of backup pad, the roof fixedly connected with buffer spring of buffer slot, buffer spring and current conducting plate fixed connection.

Preferably, the equal fixedly connected with set-square of both sides face of conducting block, the wedge with the adaptation is mutually held to the set-square, just the surface cover of telescopic link is equipped with the extrusion spring.

Preferably, hidden grooves are formed in the two side faces of the barrel body, the lower surface of the wedge-shaped plate is fixedly connected with the connecting block, the outer surface of the connecting block is fixedly connected with the moving rod, the moving rod extends to the inside of the hidden grooves, one end of the moving rod is fixedly connected with a pull ring, the connecting block is far away from the moving rod, and the moving rod is made of plastic insulating materials.

Preferably, the surface of hiding the groove articulates there is sealing door, sealing door is made for the iron material, just the surface of hiding the groove is provided with the magnetic stripe, the magnetic stripe with sealing door attracts each other.

Preferably, the outer surface of the connecting wire is fixedly connected with a sucker, the sucker is made of high-quality elastic rubber materials, and an elastic sealing rubber strip is arranged on the upper surface of the sucker.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses simple structure, connect through metal-back and first earthing terminal electricity, PCB board and second earthing terminal pass through the wire electricity and connect, can replace traditional shell and the sharing earthing terminal of microphone subassembly, cause interference signal to enter into the microphone subassembly from the metal-back very easily, cause the current sound problem, thereby play the effect of jam-proof, through the wire mesh grid that sets up between metal-back and shielding ring board, the wire mesh grid can the interference of effectual separation external magnetic field or signal, thereby improve the stability of microphone operation, the shielding ring board can play the effect of shielding, further play the effect of shielding, prevent the further interference microphone subassembly work of signal in the external world;

2. the utility model discloses an insert the guide post on connecting wire top the opening part of barrel below, the guide post removes and drives the conducting block and remove, thereby can drive the set-square and upwards remove, the set-square removes to both sides when pushing the wedge, extrusion spring and buffer spring are compressed this moment, when the set-square removes to the wedge top, through the elastic action of extrusion spring, drive the wedge and move to the inboard fast, thereby can carry out spacing to the set-square through the wedge, through the elastic action of buffer spring, drive the conducting plate and move downwards this moment, make and connect more closely between conducting plate and the conducting block, thereby be convenient for the installation of connecting wire;

3. the utility model discloses an outside pulling pull ring drives the carriage release lever and removes to both sides to can drive the wedge and remove to both sides, make wedge and set-square separation, the restriction to the set-square is removed to the wedge this moment, and through buffer spring's elastic action, extrudees the conducting block downwards rapidly, thereby can make connecting wire and barrel separate, is convenient for dismantle the connecting wire.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged schematic structural diagram of a in fig. 1 according to the present invention.

Fig. 3 is an enlarged schematic structural diagram of the position B in fig. 1 according to the present invention.

Fig. 4 is a schematic view of the three-dimensional structure of the sucker of the present invention.

In the figure: 1. a barrel; 2. a PCB board; 3. a conductive plate; 4. a connecting wire; 5. a cartridge head; 6. an air inlet; 7. a metal shell; 8. weaving a metal wire mesh; 9. a shield ring plate; 10. a vibrating membrane; 11. a fixed seat; 12. a PIN needle; 13. a field effect transistor; 14. a support plate; 15. a buffer tank; 16. a buffer spring; 17. a guide post; 18. a conductive block; 19. a set square; 20. a groove; 21. a telescopic rod; 22. a wedge plate; 23. a compression spring; 24. connecting blocks; 25. a travel bar; 26. a pull ring; 27. hiding the groove; 28. a sealing door; 29. a suction cup; 30. an elastic sealing rubber strip.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: an anti-electromagnetic wave signal interference microphone comprises a cylinder body 1, a PCB board 2, a conductive plate 3, a connecting wire 4, a first grounding end and a second grounding end, wherein an air inlet 6 is arranged on the upper surface of the cylinder body 1, a metal shell 7 is fixedly connected to the inner wall of the cylinder body 1, the metal shell 7 is electrically connected with the first grounding end, a metal wire mesh grid 8 is fixedly connected to the inner wall of the metal shell 7, the metal wire mesh grid 8 can effectively block the interference of an external magnetic field or signals, so that the running stability of the microphone is improved, a shielding ring board 9 is fixedly connected to the inner wall of the metal wire mesh grid 8, a vibrating membrane 10 is fixedly connected to the inner wall of the shielding ring board 9, a fixed seat 11 is fixedly connected to the inner wall of the cylinder body 1, the PCB board 2 is positioned on the upper surface of the fixed seat 11, a PIN needle 12 is electrically connected to the lower surface of the PCB board 2, the PCB board 2 is electrically connected with the second grounding end through a conducting wire, two supporting boards 14 are fixedly connected to the bottom wall of the cylinder body 1, the top fixedly connected with guide post 17 of connecting wire 4, the top fixedly connected with conducting block 18 of guide post 17, recess 20 has all been seted up to one side that two backup pads 14 are relative, the inner wall fixedly connected with telescopic link 21 of recess 20, and recess 20's one end fixedly connected with wedge 22 is kept away from to telescopic link 21.

Specifically, as shown in fig. 1-4, a cylinder head 5 is connected to the upper surface of the cylinder body 1 through a thread, a dust screen is arranged on the inner wall of the cylinder head 5, the cylinder head 5 is communicated with the air inlet 6, and the dust screen arranged inside the cylinder head 5 can play a role in ventilation and dust prevention.

Specifically, as shown in fig. 1 to 4, a plurality of field effect transistors 13 are fixedly mounted on the lower surface of the fixing base 11, the type of the field effect transistor 13 is CS4N65A, and the plurality of field effect transistors 13 are arranged at equal intervals, the field effect transistor 13 has the advantages of high input resistance, low noise, low power consumption, large dynamic range, easy integration, no secondary breakdown phenomenon, wide safe working area, and the like, can amplify a detection signal, has stable performance, and is beneficial to improving the precision of the signal.

Specifically, as shown in fig. 1-4, the buffer slots 15 are formed in the opposite sides of the two support plates 14, the buffer springs 16 are fixedly connected to the top walls of the buffer slots 15, the buffer springs 16 are fixedly connected with the conductive plates 3, and due to the elastic effect of the buffer springs 16, the buffer protection effect is good, the conductive plates 3 are prevented from being damaged when the conductive blocks 18 are extruded with the conductive plates 3 during installation, the conductive plates 3 can be extruded downwards, and therefore the conductive plates 3 and the conductive blocks 18 can be connected more tightly.

Specifically, as shown in fig. 1-4, the two side surfaces of the conductive block 18 are fixedly connected with a triangular plate 19, the wedge plate 22 is matched with the triangular plate 19, the outer surface of the telescopic rod 21 is sleeved with an extrusion spring 23, the wedge plate 22 can be inwards extruded through the extrusion spring 23, and therefore the triangular plate 19 can be limited after installation, and the installation effect is better.

Specifically, as shown in fig. 1-4, hidden groove 27 has all been seted up to the both sides face of barrel 1, wedge 22's lower fixed surface is connected with connecting block 24, connecting block 24's external fixed surface is connected with carriage release lever 25, carriage release lever 25 extends to the inside of hiding groove 27, one end fixedly connected with pull ring 26 of connecting block 24 is kept away from to carriage release lever 25, and carriage release lever 25 makes for plastics insulating material, through pulling carriage release lever 25, can drive wedge 22 and remove to both sides, thereby can remove the restriction of wedge 22 to set-square 19, be convenient for dismouting connecting wire 4.

Specifically, as shown in fig. 1 to 4, a sealing door 28 is hinged to an outer surface of the hidden slot 27, the sealing door 28 is made of a ferrous material, and a magnetic strip is disposed on the outer surface of the hidden slot 27, the magnetic strip and the sealing door 28 attract each other, and the pull ring 26 can be hidden through the sealing door 28.

Specifically, as shown in fig. 1 to 4, the outer surface of the connecting wire 4 is fixedly connected with a suction cup 29, the suction cup 29 is made of high-quality elastic rubber material, the upper surface of the suction cup 29 is provided with an elastic sealing rubber strip 30, the suction cup 29 can achieve a good protection effect, and the elastic sealing rubber strip 30 can achieve a good sealing and waterproof effect.

The working principle is as follows: when the utility model is used, the safety of the device is checked firstly, in the using process, the sound enters the cylinder body 1 through the cylinder head 5 and the air inlet 6 to drive the vibration film 10 to vibrate, the vibration film 10 vibrates to cause the variable capacitance work inside the cylinder body 1, the variable capacitance converts the vibration signal into an electric signal to be transmitted to the circuit in the PCB board 2, the electric signal is filtered and amplified, then the positive and negative signals are output through the PIN needle 12 and are electrically connected with the first grounding end through the metal shell 7, the PCB board 2 and the second grounding end are electrically connected through the lead, the traditional common grounding end of the shell and the microphone component can be replaced, the interference signal is caused to enter the microphone component from the metal shell easily, the problem of current sound is caused, thereby the anti-interference effect is achieved, through the metal wire mesh grid 8 arranged between the metal shell 7 and the shielding ring board 9, the metal wire mesh grid 8 can effectively block the interference of the external magnetic field or the signal, thereby improving the stability of the microphone operation, the shielding ring plate 9 can play a shielding role, further playing a shielding role, preventing the microphone assembly from further interference of external signals, when the connecting wire 4 is damaged or the microphone assembly is damaged and needs to be replaced, the guide post 17 at the top end of the connecting wire 4 is inserted into the opening below the barrel 1, the guide post 17 moves to drive the conductive block 18 to move, thereby driving the triangular plate 19 to move upwards, the triangular plate 19 moves until the wedge plate 22 moves towards two sides when extruding the wedge plate 22, at this time, the extruding spring 23 and the buffer spring 16 are compressed, when the triangular plate 19 moves above the wedge plate 22, the wedge plate 22 is driven to move towards the inner side rapidly through the elastic action of the extruding spring 23, thereby the wedge plate 19 can be limited through the wedge plate 22, at this time, through the elastic action of the buffer spring 16, drive the current-conducting plate 3 downstream, it is inseparabler to make to connect between current-conducting plate 3 and the conducting block 18, thereby be convenient for the installation of connecting wire 4, when old connecting wire 4 is dismantled to needs, open sealing door 28, outside pulling pull ring 26, it removes to both sides to drive carriage release lever 25, thereby can drive wedge 22 and remove to both sides, make wedge 22 and the separation of set-square 19, wedge 22 removes the limiting displacement to set-square 19 this moment, through buffer spring 16's elastic action, extrude conducting block 18 downwards rapidly, thereby can make connecting wire 4 and barrel 1 separate, be convenient for dismantle connecting wire 4.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an anti electromagnetic wave signal interference microphone, includes barrel (1), PCB board (2), current conducting plate (3), connecting wire (4), first earthing terminal and second earthing terminal, its characterized in that: the air inlet (6) is formed in the upper surface of the barrel body (1), the metal shell (7) is fixedly connected to the inner wall of the barrel body (1), the metal shell (7) is electrically connected with the first grounding end, the metal wire woven mesh (8) is fixedly connected to the inner wall of the metal shell (7), the shielding ring plate (9) is fixedly connected to the inner wall of the metal wire woven mesh (8), the vibrating membrane (10) is fixedly connected to the inner wall of the shielding ring plate (9), the fixing seat (11) is fixedly connected to the inner wall of the barrel body (1), the PCB (2) is located on the upper surface of the fixing seat (11), the PIN (12) is electrically connected to the lower surface of the PCB (2), the PCB (2) is electrically connected with the second grounding end through a wire, the two supporting plates (14) are fixedly connected to the bottom wall of the barrel body (1), and the guide post (17) is fixedly connected to the top end of the connecting wire (4), the top fixedly connected with conducting block (18) of guide post (17), two recess (20) are all seted up to one side that backup pad (14) is relative, the inner wall fixedly connected with telescopic link (21) of recess (20), one end fixedly connected with wedge plate (22) of recess (20) are kept away from in telescopic link (21).

2. The microphone of claim 1, wherein: the upper surface threaded connection of barrel (1) has a section of thick bamboo head (5), the inner wall of section of thick bamboo head (5) is provided with the dust screen, section of thick bamboo head (5) with air inlet (6) intercommunication.

3. The microphone of claim 1, wherein: the lower surface fixed mounting of fixing base (11) has a plurality of field effect transistor (13), and is a plurality of field effect transistor (13) are equidistant setting.

4. The microphone of claim 1, wherein: two buffer slot (15) have all been seted up to one side that backup pad (14) are relative, roof fixedly connected with buffer spring (16) of buffer slot (15), buffer spring (16) and current conducting plate (3) fixed connection.

5. The microphone of claim 1, wherein: the equal fixedly connected with set-square (19) of both sides face of conducting block (18), wedge (22) with set-square (19) looks adaptation, just the surface cover of telescopic link (21) is equipped with extrusion spring (23).

6. The microphone of claim 1, wherein: hidden groove (27) have all been seted up to the both sides face of barrel (1), the lower fixed surface of wedge plate (22) is connected with connecting block (24), the outer fixed surface of connecting block (24) is connected with carriage release lever (25), carriage release lever (25) extend to hide the inside of groove (27), the one end fixedly connected with pull ring (26) of connecting block (24) are kept away from in carriage release lever (25), just carriage release lever (25) are made for plastics insulating material.

7. The microphone of claim 6, wherein: the outer surface of hiding groove (27) articulates there is sealing door (28), sealing door (28) are made for the iron material, just the surface of hiding groove (27) is provided with the magnetic stripe, the magnetic stripe with sealing door (28) attract each other.

8. The microphone of claim 1, wherein: the outer fixed surface of connecting wire (4) is connected with sucking disc (29), sucking disc (29) are high-quality elasticity rubber materials and make, just the upper surface of sucking disc (29) is provided with elasticity joint strip (30).