CN114222215B - Anti-static microphone - Google Patents
Anti-static microphone Download PDFInfo
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- CN114222215B CN114222215B CN202111472926.7A CN202111472926A CN114222215B CN 114222215 B CN114222215 B CN 114222215B CN 202111472926 A CN202111472926 A CN 202111472926A CN 114222215 B CN114222215 B CN 114222215B
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- isolation region
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- circuit board
- isolation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
- H04R1/083—Special constructions of mouthpieces
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
- H05F3/02—Carrying-off electrostatic charges by means of earthing connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
The utility model relates to an antistatic microphone relates to audio acquisition technical field. This prevent static microphone includes: the gooseneck is connected to the base, the base comprises a shell and a circuit board, and the circuit board is arranged in the shell; the circuit board is divided into a main area and an isolation area, components are arranged in the main area, and the main area is electrically isolated from the isolation area; the isolation regions comprise a first isolation region and a second isolation region which are positioned on two sides of the main region, and the goosenecks are connected to the first isolation region; the inside of cable is equipped with many wires, and at least one wire is connected in the isolation region, and other wires all connect in the main district. The anti-static microphone can effectively improve the static protection capability of the microphone, and has high reliability and low cost.
Description
Technical Field
The present disclosure relates to the field of audio acquisition technologies, and in particular, to an anti-static microphone.
Background
Near field recording devices, such as gooseneck microphones, are frequently oriented by users during use, and are often subjected to electrostatic discharge due to contact and friction. Therefore, the electrostatic protection problem of the equipment is a technical problem which needs to be solved in the product design process.
Taking a gooseneck microphone as an example, at present, a copper foil is attached to a position of the microphone where static electricity is easily introduced, for example, a copper foil is attached to a local area of the gooseneck and a local area of the base, static electricity is firstly diffused to the copper foil, and the static electricity is diffused through a cable connected to a housing of the microphone or the microphone, so as to prevent the microphone from being unstable in operation and protect the microphone from being damaged.
However, due to the uncertainty of the position where static electricity is introduced on the microphone, the covering copper foil cannot completely solve the problem, and reliability is low.
Disclosure of Invention
The utility model provides an anti-static microphone can effectively promote the static protective capacities of microphone, and the reliability is high, and is with low costs.
The present disclosure provides an anti-static microphone, including: the goose neck is connected to the base, the base comprises a shell and a circuit board, and the circuit board is arranged in the shell;
the circuit board is divided into a main area and an isolation area, components are arranged in the main area, and the main area is electrically isolated from the isolation area; the isolation region comprises a first isolation region and a second isolation region which are positioned on two sides of the main region, and the gooseneck is connected with the first isolation region;
the inside of cable is equipped with many wires, and at least one wire is connected in the isolation region, and other wires all connect in the main district.
The utility model provides an anti-static microphone, the microphone includes the gooseneck, base and cable, be provided with the circuit board in the casing of base, through divide into first isolation region with the circuit board, main district and second isolation region, the gooseneck is connected in the first isolation region of circuit board, with the main district that sets up components and parts on the circuit board and the first isolation region and the second isolation region electrical isolation of both sides, the static conduction that the gooseneck produced is to first isolation region, the static conduction that the base casing produced is to second isolation region or first isolation region, static can't continue to conduct to main district, can prevent that the components and parts that set up in the main district from suffering electrostatic shock, guarantee the stability of microphone operation, prevent that the microphone from damaging. At least one of the plurality of wires in the cable is connected with the first isolation area to realize the electrical connection of the gooseneck and the external circuit, and the other wires are connected with the main area to realize the electrical connection of the components of the main area and the external circuit.
In one possible embodiment, the anti-static microphone further includes an electrostatic protector, and the electrostatic protector is connected between the main region and at least one of the first isolation region and the second isolation region.
In one possible embodiment, an electrostatic protector is connected between the first isolation region and the main region and between the second isolation region and the main region.
In one possible embodiment, the electrostatic protector includes a first pad connected to the isolation region, a second pad connected to the main region, and a current limiter connected between the first pad and the second pad.
In one possible embodiment, the current limiter comprises a magnetic bead, a resistor, a diode or a transistor.
In a possible implementation manner, the circuit board includes a first board surface and a second board surface, the component is disposed on the first board surface, and the cable is connected to the second board surface;
the second board surface is provided with a plurality of wiring pads, and the wires are connected with the wiring pads; the isolation region is internally provided with at least one wiring pad, the wiring pads in the isolation region are electric leading wiring pads, and the rest wiring pads are arranged in the main region.
In one possible embodiment, the first isolation region is provided with a lead bonding pad, and the plurality of wires include a shield wire connected to the lead bonding pad.
In one possible embodiment, the plurality of conductive lines includes a ground line, a power line, and at least one data line, and the ground line, the power line, and the data line are connected to the wiring pad in the main area.
In a possible implementation mode, the wiring pad close to the isolation area in the main area is a positioning wiring pad, the positioning wiring pad is arranged opposite to the electric lead wiring pad, the first pad is located in the coverage range of the electric lead wiring pad, and the second pad is located in the coverage range of the positioning wiring pad;
the first bonding pad is communicated with the leading electric connection bonding pad, and the second bonding pad is communicated with the positioning connection bonding pad.
In a possible embodiment, the connection pads are sequentially arranged at intervals on one side edge of the second board surface.
In a possible embodiment, the first isolation region and the second isolation region are provided with positioning holes, locking members are arranged in the positioning holes, and the circuit board is connected with the housing through the locking members.
In a possible embodiment, the electrostatic protector connected between the second isolation region and the main region is at a predetermined distance from the positioning hole in the second isolation region.
In one possible embodiment, the housing has an operating area thereon;
at least partial region of the projection of the operating region on the circuit board is positioned in the second isolation region; alternatively, the projection of the operating region on the circuit board is located within the main region and close to the second isolation region.
In one possible embodiment, keys and indicator lights are provided in the operating region.
In one possible embodiment, the gooseneck is connected to the circuit board by an electrical connector.
It should be understood that what is described in this summary section is not intended to define key or essential features of the embodiments of the disclosure, nor is it intended to be used to limit the scope of the disclosure. Other features of the present disclosure will become apparent from the following description.
Drawings
The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, like or similar reference characters denote like or similar elements, and wherein:
fig. 1 is a schematic external view of an anti-static microphone according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a first board surface of a circuit board according to an embodiment of the disclosure;
fig. 3 is a schematic structural diagram of a second board surface of the circuit board according to the embodiment of the disclosure;
fig. 4 is a structural diagram of an electrostatic protector disposed on a circuit board according to an embodiment of the disclosure.
Description of the reference numerals:
1-a microphone;
100-gooseneck; 200-a base; 300-a cable;
110-a microphone array; 210-a housing; 220-a circuit board; 220 a-first board surface; 220 b-second board surface; 230-electrostatic protectors;
211-operating area; 221-primary zone; 222-an isolation region; 222 a-a first isolation region; 222 b-a second isolation region; 223-a wiring pad; 223 a-lead terminal pad; 223 b-positioning a wiring pad; 231 — first pads; 232-second pad; 233-a flow restriction;
2221-positioning holes; 2222-electric connector.
Detailed Description
Exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings, in which various details of embodiments of the present disclosure are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
Static electricity (static electricity) is an electric charge which remains on the surface of an object and is in a static state, and is an objective natural phenomenon which is generated in various ways, such as contact, friction, and electric appliance fastening. Electrostatic discharge (ESD) is a phenomenon that objects with different electrostatic potentials are in direct contact or indirect contact to generate electrostatic induction, which causes electrostatic charge transfer between the objects. Among them, triboelectrification and human static electricity are two major hazards in the electronic industry, often causing unstable operation of electronic and electrical products, even damage.
The near field recording device taking the gooseneck microphone as an example can be frequently adjusted in direction by a user in the using process, or an on-off key, a tuning key and the like on the device are pressed, so that the microphone is turned on or off or the volume of the microphone is adjusted. Because the microphone is frequently rubbed or contacted with the microphone, the microphone often encounters the phenomenon of electrostatic discharge, and for this reason, in order to ensure the operation stability of the near field recording device and prevent the near field recording device from being damaged, the electrostatic protection problem of the near field recording device is particularly important.
In the related art, in order to perform electrostatic protection on near-field recording equipment such as a gooseneck microphone, the following scheme may be adopted: 1. the casing of the microphone is made of metal materials, namely, the whole microphone adopts the metal casing, so that when static electricity is generated on the surface of the microphone, the static electricity can be diffused to the surface of the casing and then diffused out through the casing; 2. the copper foil can be covered at the positions on the microphone where static electricity is easy to generate, so that when the static electricity is generated at the positions, the static electricity is firstly diffused to the copper foil and then is diffused out through the shell or the cable; 3. the electronic devices in the microphone are protected by using the electrostatic protection tube, and when the microphone generates static electricity, the electrostatic protection tube introduces the static electricity to the grounding part of the circuit board so as to prevent the electronic devices from being damaged.
The main measures of the electrostatic protection include electrostatic leakage, electrostatic dissipation, electrostatic neutralization, environmental humidification, shielding and grounding, and the three schemes adopt different measures to carry out the electrostatic protection on the near-field recording equipment respectively.
However, the solution 1 adopts the static dissipation measure, which makes the metal casing of the microphone the main generation part of static electricity, and if the static electricity is not diffused in time, when the user touches the metal casing, the user can obviously feel the electromagnetic fluctuation on the casing, which causes discomfort to the user. In addition, the metal case may limit the outer shape of the microphone and increase the manufacturing cost of the microphone.
Scheme 2 adopts the electrostatic screening measure, only needs to cover the copper foil in the position that easily produces static, easy to carry out, however, because the position that produces static is random, if verify in earlier stage inadequately, static introduces from the position that never covers the copper foil, still can influence the stability of microphone, damages the microphone even, can't follow fundamental solution problem.
Scheme 3 adopts the static ground measure, is the main mode that present hardware electronics field solved the electrostatic protection problem and adopts, and the problem that this kind of mode exists is, even electronic device can not receive electrostatic shock and damage, also can have the power surge and trigger electronic device and reset the phenomenon of protection, leads to the microphone to become invalid for a short time.
To the defect that above-mentioned scheme exists, this embodiment provides an anti-static microphone, and anti-static microphone is through setting up the regional electrical isolation of components and parts on the circuit board, and the static that produces on avoiding the microphone is introduced to components and parts to carry out electrostatic protection to components and parts, effectively promote the electrostatic protection ability of microphone, the reliability is high, and with low costs.
Fig. 1 is a schematic external view of an anti-static microphone according to an embodiment of the disclosure; fig. 2 is a schematic structural diagram of a first board surface of a circuit board according to an embodiment of the disclosure; fig. 3 is a schematic structural view of a second board surface of the circuit board according to the embodiment of the disclosure; fig. 4 is a structural diagram of an electrostatic protector disposed on a circuit board according to an embodiment of the disclosure.
Referring to fig. 1, the present embodiment provides an anti-static microphone (hereinafter referred to as a microphone), where the microphone 1 may be a gooseneck microphone, the microphone 1 includes a gooseneck 100, a base 200 and a cable 300, the gooseneck 100 is connected to the base 200, one end of the cable 300 is connected to the base 200, and the other end of the cable 300 is connected to an upper computer, so as to control the microphone 1 to work through the upper computer.
Wherein, the surface of the side of the base 200 connected to the gooseneck 100 is defined as the front surface of the base 200, the surface of the side of the base 200 opposite to the front surface is defined as the back surface of the base 200, and the back surface of the base 200 can be placed on a supporting surface such as a table or the ground.
In addition, in the present embodiment, the end of the gooseneck 100 connected to the base 200 is defined as the bottom end of the gooseneck 100, and the other end opposite to the bottom end is defined as the top end of the gooseneck 100, when in use, the top end of the gooseneck 100 is generally directed toward the user, the sound emitted by the user enters the microphone 1 through the top end of the gooseneck 100, and the microphone 1 converts the sound signal of the user into an electrical signal and amplifies the electrical signal.
In practical applications, referring to fig. 1, in some scenarios, the area of the gooseneck 100 near the top end is provided with a microphone array 110, and external sound is collected by the microphone array 110 near the top end on the gooseneck 100. In other scenarios, the gooseneck 100 may serve as a support structure only, and a microphone head (not shown) may be connected to the top end of the gooseneck 100 to collect external sounds.
When the microphone 1 is used, a user can adjust the orientation of the gooseneck 100 and the bending degree of the gooseneck 100 according to the distance between the top end of the microphone 1 and the mouth of the user, so that the distance between the microphone array 110 or the microphone head arranged at the top end of the microphone 1 and the mouth of the user is moderate, and the microphone 1 can record clear audio information.
With continued reference to fig. 1, the base 200 includes a housing 210, the housing 210 has an operation area 211, the operation area 211 is located on the front surface of the housing 210, and the operation area 211 is provided with, for example, keys and an indicator light, the user can control the operation state of the microphone 1 by pressing the keys, for example, turning on or off the microphone 1, and the indicator light can be used to indicate the operation state of the microphone 1. The operation area 211 indicated in fig. 1 may include an indicator light and a key, or the operation area 211 indicated in fig. 1 may be only one of the indicator light and the key, for illustration.
In addition, a circuit board (not shown) is disposed in the base 200, an accommodating space is formed in the housing 210, and the circuit board 220 is disposed in the accommodating space in the housing 210. The bottom end of the gooseneck 100 extends into the housing 210 and is connected to a circuit board to which the cable 300 is connected. The microphone array 110 or the microphone head disposed at the top end of the gooseneck 100 is electrically connected to the circuit board through the gooseneck 100, for example, the microphone array 110 or the microphone head is connected to the circuit board through a transmission line, or the microphone array 110 or the microphone head is wirelessly connected to the circuit board through conduction.
The audio information collected by the microphone array 110 or the microphone head is converted into an electrical signal through the circuit board, and the circuit board may be provided with a signal amplification circuit, and the signal amplification circuit amplifies the signal to output an amplified sound signal to the outside.
It should be understood that the microphone 1 in this embodiment may also be another type of microphone 1 similar to the structure of the gooseneck microphone, and the microphone 1 has a supporting structure similar to the gooseneck 100, and the supporting structure is connected to the circuit board in the base 200, which is not limited by this embodiment.
Fig. 2 is a schematic diagram of the first board surface 220a of the circuit board 220, and components are not shown in the figure for convenience of showing the whole structure of the circuit board 220. Fig. 3 shows a schematic view of the second board surface 220b of the circuit board 220. Referring to fig. 2 and 3, the Circuit Board 220 may be a Printed Circuit Board (PCB), two side surfaces of the Circuit Board 220 are a first Board 220a and a second Board 220b, respectively, components (not shown) on the Circuit Board 220 are disposed on the first Board 220a, for example, the components disposed on the first Board 220a of the Circuit Board 220 may include a chip, a resistor, a capacitor, and the like, and the cable 300 is connected to the second Board 220b of the Circuit Board 220.
As for the fixed connection of the circuit board 220 in the housing 210, usually, a positioning hole 2221 is formed on the circuit board 220, and a locking member, such as a screw or a rivet, is inserted into the positioning hole 2221, and the locking member can pass through the circuit board 220 and the housing 210 to fix the circuit board 220 in the housing 210.
Referring to fig. 1 and 2, taking the cross-sectional shape of the base 200 of the microphone 1 as a rectangle as an example, the shape of the circuit board 220 disposed in the base 200 may be a rectangle matching with the base 200, for example, positioning holes 2221 may be formed in the portions of the circuit board 220 near the four corners, so as to fixedly connect the four corners of the circuit board 220 with the housing 210, and ensure that the circuit board 220 is stably and firmly fixed.
Referring to fig. 1, during the use of the microphone 1, a user usually holds the gooseneck 100 to adjust the orientation of the microphone 1, the clothes of the user easily contact and rub against the top portion of the gooseneck 100, and the user adjusts the operation state of the microphone 1 by pressing the keys on the base 200 in the operation area 211. Therefore, the parts of the microphone 1 where static electricity is likely to be generated include the gooseneck 100 (e.g., the microphone array 110 area near the top end of the gooseneck 100) and the operation area 211 on the base 200.
Static electricity generated on the gooseneck 100 and the base 200 may be introduced into the circuit board 220 through the housing 210 of the base 200, for example, the static electricity may be conducted to the circuit board 220 through the locking member connected to the housing 210, and then the static electricity may be conducted to the components on the circuit board 220, which may affect the operation performance of the components, or may cause the components to be damaged, thereby affecting the operation stability of the microphone 1, or even damaging the microphone 1.
Referring to fig. 2, in order to perform electrostatic protection on components provided on the circuit board 220, in the present embodiment, the circuit board 220 is partitioned into a main region 221 and an isolation region 222, and the main region 221 and the isolation region 222 are electrically isolated from each other. The main area 221 is an area where components are centrally arranged on the circuit board 220, and by isolating the main area 221 from the isolation area 222, when static electricity generated by the microphone 1 is introduced into the circuit board 220, the static electricity is isolated in the isolation area 222, so that the static electricity is prevented from impacting the main area 221, components arranged in the main area 221 are protected from static electricity, the operation stability of the microphone 1 is ensured, and the microphone 1 is prevented from being damaged.
The circuit board 220 is generally a structure in which a conductive layer is sandwiched between insulating substrates, the conductive layer is formed by a metal layer, a plurality of conductive wires are formed by etching the metal layer, and components disposed on the first board surface 220a of the circuit board 220 are connected to the conductive wires through pads. The cable 300 is connected to an electrically conductive line inside the main area 221 to electrically connect each component to an external circuit, i.e., an upper computer.
In order to electrically isolate the main region 221 from the isolation region 222, when the circuit board 220 is manufactured, the conductive line in the main region 221 is disconnected from the isolation region 222, that is, the conductive line in the main region 221 is only located in the main region 221, so that static electricity generated by the microphone 1 is introduced into the isolation region 222 of the circuit board 220, and electric charge in the isolation region 222 cannot be conducted to the main region 221, thereby protecting components in the main region 221 from static electricity.
With continued reference to fig. 2, the isolation region 222 includes a first isolation region 222a and a second isolation region 222b, the main region 221 is located in a middle area of the circuit board 220, and the first isolation region 222a and the second isolation region 222b are respectively located at both sides of the main region 221. By electrically isolating the main area 221 of the circuit board 220, on which the components are disposed, in the middle area of the circuit board 220, static electricity introduced from the first isolation area 222a and the second isolation area 222b on both sides cannot be conducted to the main area 221, and the main area 221 is isolated and protected on the charge conduction paths on both sides of the microphone 1, so that the components in the main area 221 can be effectively protected from static electricity.
As shown in fig. 1 and 2, the bottom end of the gooseneck 100 is connected to the circuit board 220 in the first isolation area 222 a. Illustratively, the bottom end of the gooseneck 100 is connected to the circuit board 220 by an electrical connector 2222, and the electrical connector 2222 includes a fixed end electrical connector and a free end electrical connector that are plugged together. The fixed end electrical connector is a female contact, referred to as a socket for short, the free end electrical connector is a male contact, referred to as a plug for short, and the free end electrical connector is inserted into the fixed end electrical connector to realize the electrical connection of the gooseneck 100 and the circuit board 220.
The electrical connector 2222 on the circuit board 220 can be connected to the first board surface 220a of the circuit board 220. In addition, the electrical connector 2222 disposed in the first isolation region 222a of the circuit board 220 may be a socket, and the electrical connector 2222 connected to the bottom end of the gooseneck 100 may be a plug; alternatively, the electrical connector 2222 disposed in the first isolation area 222a of the circuit board 220 may be a plug and the electrical connector 2222 attached to the bottom end of the gooseneck 100 may be a socket.
It should be noted that, a conductive line may also be disposed inside the first isolation region 222a of the circuit board 220, the conductive line inside the first isolation region 222a and the conductive line inside the main region 221 are isolated from each other, the electrical connector 2222 located in the first isolation region 222a on the first board surface 220a of the circuit board 220 is connected to the conductive line inside the first isolation region 222a through a pad, and the cable 300 is connected to the conductive line inside the first isolation region 222a, so as to electrically connect the electrical connector 2222 to an external circuit, that is, an upper computer.
In addition, referring to fig. 2, the positioning holes 2221 formed in the circuit board 220 may be located in the isolation region 222, for example, the circuit board 220 is rectangular, and one positioning hole 2221 is formed at a position on the circuit board 220 close to each corner, wherein two positioning holes 2221 located outside one side of the main region 221 are both located in the first isolation region 222a, and two positioning holes 2221 located outside the other side of the main region 221 are both located in the second isolation region 222b.
Referring to fig. 1 and 2, when static electricity is generated in the microphone 1, the static electricity generated on the gooseneck 100 is conducted along the gooseneck 100 to the first isolation area 222a of the circuit board 220, the static electricity generated on the base 200 is conducted along the housing 210 to the locking members and is introduced into the circuit board 220 through the locking members, and the static electricity generated on the base 200 is conducted to the first isolation area 222a and the second isolation area 222b of the circuit board 220 because the locking members are disposed in the first isolation area 222a and the second isolation area 222b.
In practical applications, as shown in FIG. 1, the handle area 211 of the shell 210 of the base 200 is generally located away from the attachment point of the gooseneck 100. Exemplarily, at least a partial region of the projection of the operation region 211 on the circuit board 220 is located in the second isolation region 222b, that is, at least a partial region of the operation region 211 corresponds to the second isolation region 222b, and the operation region 211 may completely correspond to the second isolation region 222b, or a partial region of the operation region 211 corresponds to the second isolation region 222b and a partial region corresponds to the main region 221; alternatively, the operation region 211 may entirely correspond to the main region 221, and the operation region 211 is disposed close to the second isolation region 222b.
In contrast, when static electricity is generated in the operation region 211 of the housing 210 of the base 200, the static electricity generated in the operation region 211 is mainly conducted from the housing 210 to the locking member connected to the second isolation region 222b and from the locking member to the second isolation region 222b because the operation region 211 is closer to the locking member connected to the second isolation region 222b of the circuit board 220.
Therefore, by electrically isolating the main region 221 from the first isolation region 222a and the second isolation region 222b located at both sides thereof, the gooseneck 100 and the housing 210 of the base 200 can conduct the static electricity conducted to the circuit board 220 to the first isolation region 222a and the second isolation region 222b, but not to the main region 221, so as to achieve the purpose of performing electrostatic protection on the components arranged in the main region 221.
In addition, as described above, components are disposed in the main region 221, the first isolation region 222a is disposed with the electrical connector 2222, and since the main region 221 and the first isolation region 222a are electrically isolated from each other, in order to electrically connect the main region 221 and the first isolation region 222a to an external circuit, at least one of the plurality of wires in the cable 300 is connected to the isolation region 222, and at least one of the plurality of wires is connected to the first isolation region 222a, so as to electrically connect the electrical connector 2222 to the external circuit, and the other wires may be connected to the main region 221.
Referring to fig. 3, in connection of the wires in the cable 300 to the circuit board 220, the second plate surface 220b of the circuit board 220 is provided with a plurality of connection pads 223, and the wires are connected to the connection pads 223, respectively.
At least one terminal pad 223 is disposed in the first isolation region 222a, for example, one terminal pad 223 may be disposed in the first isolation region 222a, the plurality of wires of the cable 300 include a shielding wire, the shielding wire is connected to the terminal pad 223 in the first isolation region 222a, and the electrical connector 2222 may be electrically connected to an external circuit through the shielding wire.
A plurality of terminal pads 223 may be disposed in the main area 221, and the plurality of conductive wires of the cable 300 may further include a ground line, a power line, and a data line, which are respectively connected to the terminal pads 223 in the main area 221. Referring to fig. 3, taking an example that two data lines are included in the plurality of conductive lines, one data line is mainly used for transmitting positive data, the other data line is mainly used for transmitting negative data, 4 wiring pads 223 may be disposed in the main region 221, and the ground line, the power line, and 2 data lines are respectively connected to the 4 pads.
To facilitate connection of each wire in the cable 300 with each terminal pad 223, each terminal pad 223 may be sequentially arranged at intervals on one side edge of the second plate surface 220b, for example, each terminal pad 223 is arranged at intervals on the right side of the circuit board 220 shown in fig. 3. In this way, the wires of the cable 300 are soldered to the edge of the circuit board 220, which facilitates the connection of the cable 300 to the circuit board 220 and the positioning of the cable 300 within the housing 210 of the base 200.
In order to better extract the static electricity conducted to the circuit board 220, referring to fig. 4, in this embodiment, a static protector 230 is further disposed on the circuit board 220, and the static protector 230 is connected between the isolation region 222 and the main region 221. Through the current limiting function of the electrostatic protector 230, the static electricity in the isolation region 222 can be slowly released to the main region 221, so as to avoid impacting components in the main region 221; alternatively, the conduction path of the static electricity is changed to release the static electricity from other parts, so as to prevent the static electricity from affecting the working performance of the components in the main region 221.
Wherein, an electrostatic protector 230 may be disposed between the first isolation region 222a and the main region 221, and the electrostatic protector 230 between the first isolation region 222a and the main region 221 may isolate the static electricity conducted from the gooseneck 100 and the housing 210 of the base 200 to the first isolation region 222 a; alternatively, the electrostatic protector 230 may be disposed between the second isolation region 222b and the main region 221, and the electrostatic protector 230 between the second isolation region 222b and the main region 221 may isolate the static electricity conducted from the housing 210 of the cradle 200 to the second isolation region 222 b; still alternatively, electrostatic protectors 230 may be disposed between the first isolation region 222a and the main region 221 and between the second isolation region 222b and the main region 221, respectively, to provide a comprehensive isolation function for static electricity transferred to the circuit board 220.
Hereinafter, the electrostatic protector 230 is disposed between the first isolation region 222a and the main region 221, and between the second isolation region 222b and the main region 221, which will not be described again.
Specifically, as shown in fig. 4, the electrostatic preventer 230 includes a first pad 231, a second pad 232, and a current limiter 233, the first pad 231 is connected to the isolation region 222, the second pad 232 is connected to the main region 221, the first pad 231 and the second pad 232 may be disposed opposite to each other, the current limiter 233 is connected between the first pad 231 and the second pad 232, and the current limiter 233 has a function of limiting a current. Static electricity generated by the microphone 1 is conducted to the isolation region 222 of the circuit board 220, the static electricity is conducted to the first bonding pad 231, when the static current passes through the current limiter 233, the leakage speed of the current can be effectively reduced, and the current can be conducted to the second bonding pad 232 at an extremely slow speed, so that impact on components of the main region 221 is avoided.
For example, the current limiter 233 may be a magnetic bead, a resistor, a diode, or a transistor, and the magnetic bead, the resistor, the diode, and the transistor can limit the current. Alternatively, the current limiter 233 may be another device capable of limiting the current. Pins are disposed on two sides of the current limiter 233, and when the electrostatic protector 230 is assembled, the pins on two sides of the current limiter 233 are respectively connected to the first pad 231 and the second pad 232 by welding, so as to connect the first pad 231 and the second pad 232 on two sides.
With continued reference to fig. 4, since the terminal pad 223 is disposed in the isolation region 222, the static electricity conducted into the isolation region 222 is mainly concentrated on the terminal pad 223, and for the sake of convenience of description, the terminal pad 223 disposed in the isolation region 222 is defined as a leading terminal pad 223a in the present embodiment. In order to enable the electrostatic protector 230 to function better, the electrostatic protector 230 may be disposed close to the lead wire pad 223a so that the static electricity within the isolation region 222 is better introduced into the electrostatic protector 230.
As an embodiment, in this embodiment, electrostatic protector 230 may be disposed on first board surface 220a of circuit board 220, electrostatic protector 230 is disposed on both sides of circuit board 220 opposite to wiring pad 223, and wiring pad 223 in main region 221 near isolation region 222 is disposed opposite to lead wiring pad 223a in isolation region 222, and for convenience of description, this wiring pad 223 in main region 221 is defined as positioning wiring pad 223b, that is, positioning wiring pad 223b in main region 221 is disposed opposite to lead wiring pad 223a in isolation region 222.
Taking the electrostatic preventer 230 disposed between the first isolation region 222a and the main region 221 as an example, the first pad 231 of the electrostatic preventer 230 may be located within the coverage of the electrical lead pad 223a, the second pad 232 of the electrostatic preventer 230 may be located within the coverage of the positioning wire pad 223b, and the first pad 231 of the electrostatic preventer 230 communicates with the electrical lead pad 223a, and the second pad 232 communicates with the positioning wire pad 223 b. In this way, when static electricity is introduced from the gooseneck 100 or the housing 210 of the base 200 into the first isolation region 222a of the circuit board 220, the static protector 230 can effectively isolate the static electricity flowing to the main region 221 as the only path for communicating the first isolation region 222a with the main region 221, and the static electricity can be conducted to the cable 300 through the wiring pad 223 on the back side of the static protector 230 and discharged through the cable 300.
Through holes may be respectively formed in the circuit board 220 at positions corresponding to the first pad 231 and the second pad 232 of the electrostatic protector 230, the first pad 231 of the electrostatic protector 230 is connected to the lead wire pad 223a through the through hole, and the second pad 232 of the electrostatic protector 230 is communicated with the positioning wire pad 223b through the through hole.
Referring to fig. 4, the connection pad 223 may not be disposed at the portion of the electrostatic protector 230 connected between the second isolation region 222b and the main region 221, when static electricity is introduced into the second isolation region 222b of the circuit board 220 from the housing 210 (e.g., the operation region 211 on the housing 210) of the base 200, the electrostatic protector 230 connected between the second isolation region 222b and the main region 221 is used as a unique path for communicating the second isolation region 222b and the main region 221, and can effectively isolate the static electricity flowing to the main region 221, and the static electricity is conducted to the first isolation region 222a through the housing 210 and the locking member inserted into the positioning hole 2221 of the first isolation region 222a, conducted to the shielding line of the cable 300 through the connection pad 223a of the second plate surface 220b of the first isolation region 222a, and discharged through the shielding line.
Alternatively, similarly to electrostatic protector 230 connected between first isolation region 222a and main region 221, it is also possible for electrostatic protector 230 connected between second isolation region 222b and main region 221 to provide, at first board surface 220a of circuit board 220, wiring pad 223 connected between second isolation region 222b and main region 221, and to provide, at second board surface 220b of second isolation region 222b, wiring pad as lead wiring pad, and to provide, in main region 221, positioning wiring pad opposing the lead wiring pad in second isolation region 222b, to which wiring pads 223 wires in cable 300 are connected. When static electricity is introduced from the housing 210 of the base 200 into the second isolation region 222b of the circuit board 220, the static electricity may be conducted to the cable 300 through the wiring pad on the back side of the electrostatic protector 230 and discharged through the cable 300.
Referring to fig. 4, in the case where first pad 231 of electrostatic protector 230 is located within the coverage of lead wire pad 223a of isolation region 222 and second pad 232 is located within the coverage of positioning wire pad 223b of main region 221, a plurality of electrostatic protectors 230 may be arranged in a matching manner within the coverage of wire pad 223 according to the actual size of wire pad 223, so that electrostatic protector 230 occupies most of wire pad 223, and the electrostatic protection function of electrostatic protector 230 is improved.
For example, 2, 3, 4, or even more electrostatic protectors 230 may be provided in the coverage area of the lead wire pad 223a of the isolation region 222 and the positioning wire pad 223b of the main region 221.
In addition, since static electricity is mainly conducted from the locker member connected to the second isolation region 222b of the circuit board 220 to the second isolation region 222b, the static electricity is mainly concentrated around the positioning hole 2221 in the second isolation region 222b, and thus, the static electricity protector 230 connected between the second isolation region 222b and the main region 221 can be disposed close to the positioning hole 2221 in the second isolation region 222b. In this regard, the lead wire pads located within the second isolation region 222b may be disposed adjacent to the positioning hole 2221.
In the present embodiment, for the electrostatic protector 230 connected between the second isolation region 222b and the main region 221, the horizontal distance between the electrostatic protector 230 and the positioning hole 2221 in the second isolation region 222b is a preset distance, and illustratively, the preset distance may be in a range of 0-5mm, for example, the preset distance is 0mm, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, or 4.5mm.
Here, the horizontal pitch defined herein is a pitch between the electrostatic protector 230 and the positioning hole 2221 closest thereto in the extending direction of the isolation belt between the second isolation region 222b and the main region 221.
As for the number of the electrostatic protectors 230 disposed around each positioning hole 2221 of the second isolation region 222b, the present embodiment is not particularly limited, and as shown in fig. 4, by taking an example that one positioning hole 2221 is disposed at each of the positions near two sides in the second isolation region 222b, one electrostatic protector 230 may be disposed corresponding to each of the two positioning holes 2221, or 2, 3, 4, or even more electrostatic protectors 230 may be disposed at intervals around each positioning hole 2221.
The above detailed description should not be construed as limiting the scope of the disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present disclosure should be included in the scope of protection of the present disclosure.
Claims (14)
1. An anti-static microphone is characterized by comprising a gooseneck, a base and a cable, wherein the gooseneck is connected to the base, the base comprises a shell and a circuit board, and the circuit board is arranged in the shell;
the circuit board is divided into a main area and an isolation area, components are arranged in the main area, and the main area is electrically isolated from the isolation area; the isolation regions comprise a first isolation region and a second isolation region which are positioned on two sides of the main region, and the goosenecks are connected to the first isolation region;
a plurality of conducting wires are arranged in the cable, at least one conducting wire is connected to the isolation area, and other conducting wires are connected to the main area;
the circuit board comprises a first board surface and a second board surface, the component is arranged on the first board surface, and the cable is connected to the second board surface;
the second board surface is provided with a plurality of wiring pads, and the wires are connected with the wiring pads; the wiring pad in the isolation region is an electric leading wiring pad, and the rest wiring pads are arranged in the main region.
2. The anti-static microphone according to claim 1, further comprising an electrostatic protector, wherein the electrostatic protector is connected between the main region and at least one of the first isolation region and the second isolation region.
3. The anti-static microphone according to claim 2, wherein the electrostatic protector is connected between the first isolation region and the main region and between the second isolation region and the main region.
4. The anti-static microphone according to claim 2, wherein the electrostatic protector includes a first pad connected to the isolation region, a second pad connected to the main region, and a current limiter connected between the first pad and the second pad.
5. The anti-static microphone according to claim 4, wherein the current limiter comprises a magnetic bead, a resistor, a diode, or a transistor.
6. The anti-static microphone according to claim 5, wherein the lead wire bonding pad is provided in the first isolation region, and the plurality of wires include a shield wire connected to the lead wire bonding pad.
7. The anti-static microphone according to claim 5, wherein the plurality of conductive lines include a ground line, a power line, and at least one data line, the ground line, the power line, and the data line being connected to the wiring pad in the main area.
8. The anti-static microphone according to claim 5, wherein the terminal pad in the main area close to the isolation area is a positioning terminal pad disposed opposite to the lead terminal pad, the first pad is located within a coverage of the lead terminal pad, and the second pad is located within a coverage of the positioning terminal pad;
the first bonding pad is communicated with the leading wire bonding pad, and the second bonding pad is communicated with the positioning bonding pad.
9. The anti-static microphone as claimed in claim 5, wherein the connection pads are sequentially spaced from one side edge of the second board surface.
10. The microphone as claimed in any one of claims 2 to 9, wherein the first isolation region and the second isolation region are each provided with a positioning hole, a locking member is disposed in the positioning hole, and the circuit board is connected to the housing through the locking member.
11. The anti-static microphone according to claim 10, wherein when at least one of the electrostatic protectors is disposed between the second isolation region and the main region, a horizontal distance between the electrostatic protector connected between the second isolation region and the main region and the positioning hole in the second isolation region is a predetermined distance.
12. The microphone of any one of claims 1-9, wherein the housing has an operational area thereon;
at least partial area of the projection of the operating area on the circuit board is positioned in the second isolation area; or, the projection of the operation area on the circuit board is positioned in the main area and close to the second isolation area.
13. The anti-static microphone as claimed in claim 12, wherein a key and an indicator light are disposed in the operation region.
14. The microphone of any one of claims 1-9, wherein the gooseneck is connected to the circuit board by an electrical connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111472926.7A CN114222215B (en) | 2021-12-01 | 2021-12-01 | Anti-static microphone |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111472926.7A CN114222215B (en) | 2021-12-01 | 2021-12-01 | Anti-static microphone |
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| Publication Number | Publication Date |
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| CN114222215A CN114222215A (en) | 2022-03-22 |
| CN114222215B true CN114222215B (en) | 2023-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111472926.7A Active CN114222215B (en) | 2021-12-01 | 2021-12-01 | Anti-static microphone |
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| CN (1) | CN114222215B (en) |
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| CN2453639Y (en) * | 2000-11-11 | 2001-10-10 | 深圳市中兴通讯股份有限公司 | Static-proof type single panel device |
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| CN212677375U (en) * | 2020-09-15 | 2021-03-09 | 苏州德斯倍电子有限公司 | Microphone device and electronic equipment |
| CN214591968U (en) * | 2021-01-06 | 2021-11-02 | 苏州敏芯微电子技术股份有限公司 | MEMS microphone structure |
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| US8134817B2 (en) * | 2008-08-12 | 2012-03-13 | Power Integrations, Inc. | Electrostatic discharge conducting pathway having a noise filter spark gap |
| TWI363583B (en) * | 2009-07-15 | 2012-05-01 | Quanta Comp Inc | Audio circuit board |
| CN105828588B (en) * | 2015-04-30 | 2018-04-20 | 维沃移动通信有限公司 | A kind of mobile terminal and the device for improving its display screen EMC performances |
| CN210744733U (en) * | 2019-10-22 | 2020-06-12 | 深圳市理邦精密仪器股份有限公司 | Anti-static protection circuit and monitor |
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|---|---|---|---|---|
| CN2453639Y (en) * | 2000-11-11 | 2001-10-10 | 深圳市中兴通讯股份有限公司 | Static-proof type single panel device |
| CN108632691A (en) * | 2017-10-09 | 2018-10-09 | 北京视联动力国际信息技术有限公司 | A kind of antistatic microphone |
| CN209017320U (en) * | 2018-12-13 | 2019-06-21 | 歌尔科技有限公司 | MEMS microphone |
| CN211656518U (en) * | 2020-03-18 | 2020-10-09 | 深圳市创维群欣安防科技股份有限公司 | Circuit board with electrostatic protection function and electronic lock |
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|---|---|
| CN114222215A (en) | 2022-03-22 |
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