CN106385648A - Patch-type earphone wire control microphone - Google Patents
Patch-type earphone wire control microphone Download PDFInfo
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- CN106385648A CN106385648A CN201510637896.9A CN201510637896A CN106385648A CN 106385648 A CN106385648 A CN 106385648A CN 201510637896 A CN201510637896 A CN 201510637896A CN 106385648 A CN106385648 A CN 106385648A
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Abstract
The invention discloses a patch-type earphone wire control microphone. The microphone comprises a shell. An inner cavity bottom of the shell is provided with a metal pole plate. The pole plate is provided with a pole plate air hole. An insulation pad ring is arranged above the pole plate. An upper end surface of the insulation pad ring is pasted with a diaphragm in a tension mode. A surface of the diaphragm is plated with nickel. A metal ring is arranged above the diaphragm. A circuit board is arranged above the metal ring. The circuit board is provided with a circuit board air hole. An upper portion of the shell compacts the above components through an inward flanging form. An outer side of the circuit board is provided with a wiring copper plate. A shell bottom is provided with an air-flow hole corresponding to a position of the diaphragm. The circuit board is welded with a diversion pipe corresponding to the circuit board air hole. End portion of the diversion pipe is fixedly provided with two copper sheets which are symmetrically arranged and are outwardly extended. The copper sheets are welded in an inner side of the circuit board. The diversion pipe is inclined towards a central section of an inner wall of the metal ring. The structure is reasonable, the size is small, sensitivity is high, the diaphragm is not easy to be broken under sound and large airflow impacts, a service life is long, high temperature resistance performance is possessed, reflow soldering equipment can be used to carry out processing, the sound can be controlled conveniently and output is stable.
Description
Technical field
The present invention relates to a kind of SMD earphone line control microphone.
Background technology
Microphone, as the term suggests being exactly to perceive the change of sound air-flow, and air-flow change is converted into the sensor of corresponding switching signal output.Microphone traditional at present is to drive magnetic switch to constitute by silicone rubber membrane, and when there being air-flow to flow through silicone rubber membrane, silicone rubber membrane shakes, thus triggering magnetic switch action, represents air-flow by magnetic switch output
The on-off model of conversion, traditional microphones structure is simple, easy to use, and application is widely.Traditional microphones are disadvantageous in that：Volume is big, and sensitivity is low, is unsuitable for requiring higher applications in induction sensitivity.
At present, it is applied to transaudient field online microphone, such as on the earphone cord of mouth more.When user wears the earphone with function of speaking, the air-flow spoken can be delivered near microphone, the air-flow spoken can drive the diaphragm oscillations of microphone, the signal of telecommunication so on microphone will follow sound variation, thus playing sensing sound, conversion acoustical signal, the effect of transmission acoustical signal.For user, different people has different customs.For example, somebody likes gulping down and mumbles, and onlys demand other side and can hear, for such user, general microphone is installed on earphone cord and can meet requirement.And somebody then likes speaking up, for the purpose of can catching, understand by other side, become apparent from when particularly speaking under noisy environment.This require microphone perceive sound frequency range is wider, amplitude is larger, also require that microphone needs to produce larger range of induced signal, and this must be realized to microphone its internal diaphragm oscillations amplitude of increase of propagandaing directed to communicate by loud.Because microphone is typically nearer apart from oral area on earphone, big mouth is spoken the moment leading to larger air-flow can promote microphone interior vibrating diaphragm quick violent oscillatory motion, and this frequently can lead to the rupture of vibrating diaphragm, also results in the damage of microphone, substantially reduces service life.In addition, conventional earphone microphone is directly common microphone to be fixed on earphone cord, it is not firm not only to connect, and not to acoustical signal output control member, uses very inconvenient.
At present, all based on manual operations, production efficiency is low for the production of most of microphones.For improve production efficiency, reduces cost, market occurs in that reflow soldering process and solder reflow device.But, solder reflow device, in welding, needing to be pasted together microphone and wiring board to be welded with solder(ing) paste, then melting solder(ing) paste with high temperature hot gas, thus playing the effect of rapid welding.But current microphone construction is to connect capillary structure, not only need the plug-in mounting being attached capillary and pad in addition it is also necessary to smear solder(ing) paste when welding using solder reflow device, this is required for manually operating, work efficiency is still low, and the microphone of therefore traditional structure is not appropriate for reflow soldering process.
Content of the invention
The technical problem to be solved in the present invention is a kind of rational in infrastructure for above-mentioned not enough offer, compact, sensitivity is higher, and it is difficult rupture of membranes in gas shock big by sound, long service life, there is high temperature resistant property, can be processed using solder reflow device, a kind of SMD earphone line control microphone that manipulation sound is convenient, output is stable.
For solving above-mentioned technical problem, being structurally characterized in that of this SMD earphone line control microphone：Including shell，Bottom of shell inner cavity is provided with metal polar plate，Pole plate is provided with pole plate pore，It is provided with insulation gasket ring above pole plate，The upper surface tension of insulation gasket ring is pasted with vibrating diaphragm，Diaphragm surface nickel plating，It is provided with becket above vibrating diaphragm，It is provided with circuit board above becket，Circuit board is provided with circuit board pore，Shell upper is by the form to in-flanges by above-mentioned each compressing parts together，It is provided with wiring copper coin outside circuit board，Outer casing bottom is provided with airflow hole corresponding with diaphragm position，Mozzle corresponding with circuit board pore is welded with circuit board，Water conservancy diversion tube end is installed with two symmetrically arranged copper sheets stretching out，Copper sheet is welded on inside circuit board，Mozzle tilts towards in the middle part of becket inwall，Also include PWB plate，PWB plate is provided with two pads corresponding with wiring copper coin，Pad is pasted together with wiring copper coin by solder(ing) paste，PWB plate is provided with some passages near pad setting，The electric capacity in parallel with two pads is welded with PWB plate、Diode and switch，Switch positive terminal is electrically connected with electrode line and power line，It is serially connected with output capacitance in electrode line，It is serially connected with load resistance in power line.
The SMD earphone line control microphone of this structure be realized by diaphragm-vibrating type contact structure rational in infrastructure, compact, sensitivity is higher, and it is difficult rupture of membranes in gas shock big by sound, long service life, there is high temperature resistant property, can be processed using solder reflow device, manipulation sound is convenient, output is stable.
Diaphragm-vibrating type contact structure mainly includes vibrating diaphragm and the metal polar plate being arranged in shell, it is provided with insulation gasket ring between vibrating diaphragm and pole plate, it is pasted onto on gasket ring side after the avris tension of vibrating diaphragm, so, vibrating diaphragm is just in plane under the support of gasket ring, and vibrating diaphragm and metal polar plate parallel interval under the support of insulation gasket ring come.In order that vibrating diaphragm and metal polar plate constitute the electrical structure with contact function, nickel plating on vibrating diaphragm, the nickel coating of vibrating diaphragm is electrically connected with circuit board by becket, pole plate is passed through shell and is also electrically connected with circuit board composition, so, vibrating diaphragm and pole plate are just all electrically connected with circuit board, and vibrating diaphragm and pole plate constitute two contacts of normal open switch.Air-flow triggering vibrating diaphragm for convenience, metal polar plate is provided with the pole plate pore of insertion pole plate both sides, the circuit board pore of insertion circuit board both sides is also equipped with circuit board, so, vibrating diaphragm is connected with ambient atmosphere by circuit board pore away from the side of pole plate, the vibrating diaphragm side adjacent with pole plate is also communicated with air by pole plate pore and airflow hole, when outer gas stream is flowed to airflow hole direction by circuit board pore, air-flow will promote vibrating diaphragm to move to the direction of pole plate, when together with the nickel coating of diaphragm surface touching with metal polar plate, vibrating diaphragm is just constituted with pole plate and electrically connects, circuit board sends this switching signal to external circuit by wiring copper coin, thus realizing the effect of sensitive perception air-flow.
In the present invention, it is welded with mozzle corresponding with circuit board pore inside circuit board, mozzle is obliquely installed towards in the middle part of becket inwall, the air-flow thus flowing through circuit board pore is provided with the oriented effect towards in the middle part of becket inwall.When smoker's big mouth smoking, flow through circuit board pore strong air flow can under the guide effect of mozzle to becket in the middle part of flow, or in the middle part of becket inwall through mozzle outwardly.So, the path that flows through of air-flow is exactly：In the middle part of circuit board pore, mozzle, becket inwall, pole plate pore, be one bending C-shaped path.And the circulation path of conventional patch formula earphone line control microphone interior air-flow is：Circuit board pore, pole plate pore, are straight line paths directly connecting.Therefore, the air flow path of the present invention is longer than the air flow path of conventional patch formula earphone line control microphone, serves the effect relaxing current rate; make air-flow that vibrating diaphragm will not be produced with the big vibration of moment; thus without tear vibrating diaphragm, effective protection vibrating diaphragm, substantially prolongs service life.Air-flow total amount due to entering the present invention is constant, and the Oscillation Amplitude of therefore vibrating diaphragm is identical, and the signal of generation is identical.
In the present invention, water conservancy diversion tube end is installed with two symmetrically arranged copper sheets stretching out, and mozzle is exactly to be fixedly welded on inside circuit board by this two copper sheets.So arrange, connection welding is few, simple to operate, it is firm to connect.
Present invention additionally comprises the PWB plate being fixedly mounted on earphone cord, PWB plate is provided with least two pads, pad and the upper and lower corresponding matching of wiring copper coin.Therefore when producing, only solder(ing) paste first need to be applied on wiring copper coin or be applied on pad, then hold shell and PWB plate by corresponding with pad for wiring copper coin close in opposite directions till shell turn-up portion withstands on PWB plate, so will pass through solder(ing) paste each assembly of shell and its inside has been pasted onto on PWB plate, finally the present invention is put into solder reflow device, hot-air in solder reflow device can melt solder(ing) paste and become tin soldering liquid, corresponding wiring copper coin and pad will be fixed together after tin soldering liquid cooling, so not only achieve shell and its intraware are fixedly mounted on PWB plate and also circuit board and PWB are achieved electrical connection, operation is very simple.In addition, in the present invention, PWB plate is welded with the electric capacity in parallel with two pads, diode and switch, being provided with one of effect of electric capacity and diode is to filter impurity signal, makes signal output apparent.For convenience of describing, the two ends of switch are respectively defined as positive terminal and negative pole end.Wherein, switch positive terminal is electrically connected with electrode line and power line, and power line and switch negative pole end pass through earphone cord electrical connection corresponding with external power source positive and negative polarities, for powering to circuit board.When power supply starts, diode has the effect of stabilized power source signal, and this is the two of the effect of diode.The negative pole end of electrode line and switch is as two outfans of induced signal, the outwards output sound signal of telecommunication.In the present invention, it is serially connected with output capacitance in electrode line, for steady output signal.It is serially connected with load resistance, for limiting electric current and balanced load in power line.Because switch in parallel is at two pad two ends, therefore, when the switch is closed, electric capacity starts to discharge, and power supply is shorted simultaneously, is so equivalent to have sent a control signal or request signal to peripheral circuit, such as opens and receives the signals such as sound induced signal.When switch recovers off state, circuit board starts outwards to export acoustical signal, and the therefore present invention not only can be fixedly attached on earphone signal line, and has control signal function.
In the present invention, PWB plate is provided with some passages, inside and outside passage insertion PWB plate.Because after circuit board is pasted on PWB plate by solder(ing) paste, a relative airtight space can be formed between circuit board and PWB plate.The purpose of setting passage is so that PWB plate both sides is ventilated, even if also circuit board and extraneous ventilation, is so not only advantageous to hot-air during Reflow Soldering and smoothly can touch solder(ing) paste moreover it is possible to provide drain passage for thermal current, substantially increase the circulation of air.In the present invention, passage is arranged near pad, the flue gas that solder(ing) paste melts so can be enable to discharge quickly through passage, serve quick pressure releasing effect, protect the safety of each part of enclosure particularly vibrating diaphragm.
As improvement, becket outer sheath is equipped with dead ring.
In order to prevent becket from contacting with outer casing inner wall and short-circuit, becket outer sheath equipped with dead ring, can be isolated by dead ring, thus improving the stability of this SMD earphone line control microphone by becket and shell.
As improving further, outside outer casing bottom, it is pasted with Air Filter.
In order to prevent the impurity in air-flow from entering inside this SMD earphone line control microphone by airflow hole, it is pasted with Air Filter in shell bottom outside, impurity can be filtered after setting Air Filter it is ensured that the sensitivity of this SMD earphone line control microphone and life-span.
As improvement, described mozzle is the big conical tube in the little the inner in outer end.
Because mozzle is the big conical tube in the little the inner in outer end, when therefore outer gas stream enters circuit board pore, the outer stomidium of less conical tube will be first passed through and then pass through larger interior stomidium again, finally could enter inner chamber of the present invention.In air-flow from less outer stomidium is to larger interior stomidium flow process, airflow passes aisle spare can become larger, and air-flow can gradually extend out.On the premise of air-flow total amount is certain, the air velocity flowing out conical tube can thereby serve to reduction of speed effect, greatly reduced the impact to vibrating diaphragm significantly lower than the air-flow entering conical tube.As a same reason, when air-flow flows to less outer end from the larger the inner of conical tube although flowing out the air velocity of conical tube quickly, but air velocity inside the present invention outwardly relatively low it is ensured that the safety in utilization of vibrating diaphragm.
As improvement, described circuit board is installed with some copper dish of loop circuit plate pore setting, when water conservancy diversion tube end aligns with circuit board pore, two copper sheets with arbitrary to corresponding copper dish by scolding tin affixed afterwards determined by mozzle direction be unique.
In patent of the present invention, mozzle one end is connected with circuit board, and the other end is arranged towards in the middle part of becket inwall, and therefore mozzle is obliquely installed for circuit board.As it was previously stated, mozzle there occurs change to the frequency of vibration of vibrating diaphragm after air-flow guiding towards in the middle part of becket inwall, reduce the instantaneous variation amount of vibrating diaphragm, so that sound is slowed down, protect vibrating diaphragm.In actual production, after mozzle fixation is welded on circuit board, this buffering effect just secures, and therefore can only be suitable for a kind of application of volume occasion.But in audio-video monitoring or collection occasion, when such as using indoors, surrounding is quieter, needs less to the buffer requirement of big volume sound；In outdoor application, affected by extraneous uncertain sound factors, need the buffering effect to burst of sound larger；In the big volume noise place such as heavy-duty machinery processing site, airport, plant equipment or aircraft harsh noise not only affect pickup effect and also can damage vibrating diaphragm, now just very big to the buffering effect of big volume.In the present invention, around circuit board pore, ring sets circle copper dish, and makes copper dish when water conservancy diversion tube end is alignd with circuit board pore, and mozzle two copper sheet corresponds setting with arbitrary to corresponding copper dish.So, when copper sheet is adjacent to from different copper dish, the pendulum angle of mozzle opposing circuit board is different, and the position towards becket inwall is also different, also just different to the buffering effect of air-flow.Therefore, can determine that copper sheet is adjacent to copper dish with that according to actual needs, and fixed with scolding tin, in other words, after can welding from different copper dish according to copper sheet, produced different buffering effects are classified to the present invention, so that it is determined that different application places or sales orientation, greatly save and repeat research and development, open up the costs such as mould, inspection because what exploitation different demands product caused.
In sum, SMD earphone line control microphone using this structure, rational in infrastructure, compact, sensitivity is higher, and it is difficult rupture of membranes in gas shock big by sound, long service life, has high temperature resistant property, can be processed using solder reflow device, manipulation sound is convenient, output is stable, is particluarly suitable for space less air-flow detecting field and closes use.
Brief description
In conjunction with accompanying drawing, the present invention is described in further details：
Fig. 1 is the structural representation of the present invention；
Fig. 2 is shell, pole plate, circuit board, the fit structure schematic diagram of vibrating diaphragm；
Fig. 3 is the fit structure schematic diagram of mozzle and copper sheet；
Fig. 4 is the fit structure schematic diagram of mozzle and circuit board；
Fig. 5 is fixed to the structural representation after circuit board for mozzle；
Fig. 6 is interior air-flow paths schematic diagram of the present invention；
Fig. 7 is the electrical schematic diagram of the present invention.
In figure：1 is shell, and 2 is pole plate, and 3 is gasket ring, and 4 is vibrating diaphragm, and 5 is becket, 6 is circuit board, and 7 is wiring copper coin, and 8 is airflow hole, and 9 is dead ring, and 10 is Air Filter, 11 is pole plate pore, and 12 is circuit board pore, and 013 is mozzle, and 014 is copper sheet, and 015 is solder(ing) paste, 016 is passage, and 017 is copper dish, and 018 is scolding tin, and 13 is PWB plate, 14 is pad, and 15 is electric capacity, and 16 is diode, and 17 is switch, 18 is electrode line, and 19 is power line, and 20 is output capacitance, and 21 is load resistance.
Specific embodiment
As illustrated, this SMD earphone line control microphone includes shell 1, bottom of shell inner cavity is provided with metal polar plate 2, and pole plate is provided with pole plate pore 11.It is provided with insulation gasket ring 3, the upper surface tension of insulation gasket ring is pasted with vibrating diaphragm 4, diaphragm surface nickel plating above pole plate.It is provided with becket 5 above vibrating diaphragm, above becket, is provided with circuit board 6, circuit board is provided with circuit board pore.Shell upper by the form to in-flanges by above-mentioned each compressing parts together, is provided with wiring copper coin 7, outer casing bottom is provided with airflow hole 8 corresponding with diaphragm position outside circuit board.Mozzle 013 corresponding with circuit board pore 12 is welded with circuit board 6, mozzle 013 end is installed with two symmetrically arranged copper sheets 014 stretching out, and copper sheet 014 is welded on inside circuit board 6, mozzle 013 tilts towards in the middle part of becket 5 inwall.Also include PWB plate 13, PWB plate 13 is provided with two pads 14 corresponding with wiring copper coin 7, pad 14 is pasted together with wiring copper coin 7 by solder(ing) paste 015.PWB plate 13 is provided with some passages 016 near pads 14 setting, and PWB plate 13 is welded with the electric capacity 15 in parallel with two pads 14, diode 16 and switch 17.Switch 17 positive terminals and be electrically connected with electrode line 18 and power line 19, be serially connected with output capacitance 20 in electrode line 18, in power line 19, be serially connected with load resistance 21.
The SMD earphone line control microphone of this structure mainly includes the vibrating diaphragm and the metal polar plate that are arranged in shell, it is provided with insulation gasket ring between vibrating diaphragm and pole plate, it is pasted onto on gasket ring side after the avris tension of vibrating diaphragm, so, vibrating diaphragm is just in plane under the support of gasket ring, and vibrating diaphragm and metal polar plate parallel interval under the support of insulation gasket ring come.In order that vibrating diaphragm and metal polar plate constitute the electrical structure with contact function, nickel plating on vibrating diaphragm, the nickel coating of vibrating diaphragm is electrically connected with circuit board by becket, pole plate is passed through shell and is also electrically connected with circuit board composition, so, vibrating diaphragm and pole plate are just all electrically connected with circuit board, and vibrating diaphragm and pole plate constitute two contacts of normal open switch.Air-flow triggering vibrating diaphragm for convenience, metal polar plate is provided with the pole plate pore of insertion pole plate both sides, the circuit board pore of insertion circuit board both sides is also equipped with circuit board, so, vibrating diaphragm is connected with ambient atmosphere by circuit board pore away from the side of pole plate, the vibrating diaphragm side adjacent with pole plate is also communicated with air by pole plate pore and airflow hole, when outer gas stream is flowed to airflow hole direction by circuit board pore, air-flow will promote vibrating diaphragm to move to the direction of pole plate, when together with the nickel coating of diaphragm surface touching with metal polar plate, vibrating diaphragm is just constituted with pole plate and electrically connects, circuit board sends this switching signal to external circuit by wiring copper coin, thus realizing the effect of sensitive perception air-flow.
In the present invention, it is welded with mozzle corresponding with circuit board pore inside circuit board, mozzle is obliquely installed towards in the middle part of becket inwall, the air-flow thus flowing through circuit board pore is provided with the oriented effect towards in the middle part of becket inwall.When smoker's big mouth smoking, flow through circuit board pore strong air flow can under the guide effect of mozzle to becket in the middle part of flow, or in the middle part of becket inwall through mozzle outwardly.So, the path that flows through of air-flow is exactly：In the middle part of circuit board pore, mozzle, becket inwall, pole plate pore, be one bending C-shaped path.And the circulation path of conventional patch formula earphone line control microphone interior air-flow is：Circuit board pore, pole plate pore, are straight line paths directly connecting.Therefore, the air flow path of the present invention is longer than the air flow path of conventional patch formula earphone line control microphone, serves the effect relaxing current rate; make air-flow that vibrating diaphragm will not be produced with the big vibration of moment; thus without tear vibrating diaphragm, effective protection vibrating diaphragm, substantially prolongs service life.Air-flow total amount due to entering the present invention is constant, and the Oscillation Amplitude of therefore vibrating diaphragm is identical, and the signal of generation is identical.
In the present invention, water conservancy diversion tube end is installed with two symmetrically arranged copper sheets stretching out, and mozzle is exactly to be fixedly welded on inside circuit board by this two copper sheets.So arrange, connection welding is few, simple to operate, it is firm to connect.
Present invention additionally comprises the PWB plate being fixedly mounted on earphone cord, PWB plate is provided with least two pads, pad and the upper and lower corresponding matching of wiring copper coin.Therefore when producing, only solder(ing) paste first need to be applied on wiring copper coin or be applied on pad, then hold shell and PWB plate by corresponding with pad for wiring copper coin close in opposite directions till shell turn-up portion withstands on PWB plate, so will pass through solder(ing) paste each assembly of shell and its inside has been pasted onto on PWB plate, finally the present invention is put into solder reflow device, hot-air in solder reflow device can melt solder(ing) paste and become tin soldering liquid, corresponding wiring copper coin and pad will be fixed together after tin soldering liquid cooling, so not only achieve shell and its intraware are fixedly mounted on PWB plate and also circuit board and PWB are achieved electrical connection, operation is very simple.In addition, in the present invention, PWB plate is welded with the electric capacity in parallel with two pads, diode and switch, being provided with one of effect of electric capacity and diode is to filter impurity signal, makes signal output apparent.For convenience of describing, the two ends of switch are respectively defined as positive terminal and negative pole end.Wherein, switch positive terminal is electrically connected with electrode line and power line, and power line and switch negative pole end pass through earphone cord electrical connection corresponding with external power source positive and negative polarities, for powering to circuit board.When power supply starts, diode has the effect of stabilized power source signal, and this is the two of the effect of diode.The negative pole end of electrode line and switch is as two outfans of induced signal, the outwards output sound signal of telecommunication.In the present invention, it is serially connected with output capacitance in electrode line, for steady output signal.It is serially connected with load resistance, for limiting electric current and balanced load in power line.Because switch in parallel is at two pad two ends, therefore, when the switch is closed, electric capacity starts to discharge, and power supply is shorted simultaneously, is so equivalent to have sent a control signal or request signal to peripheral circuit, such as opens and receives the signals such as sound induced signal.When switch recovers off state, circuit board starts outwards to export acoustical signal, and the therefore present invention not only can be fixedly attached on earphone signal line, and has control signal function.
In the present invention, PWB plate is provided with some passages, inside and outside passage insertion PWB plate.Because after circuit board is pasted on PWB plate by solder(ing) paste, a relative airtight space can be formed between circuit board and PWB plate.The purpose of setting passage is so that PWB plate both sides is ventilated, even if also circuit board and extraneous ventilation, is so not only advantageous to hot-air during Reflow Soldering and smoothly can touch solder(ing) paste moreover it is possible to provide drain passage for thermal current, substantially increase the circulation of air.In the present invention, passage is arranged near pad, the flue gas that solder(ing) paste melts so can be enable to discharge quickly through passage, serve quick pressure releasing effect, protect the safety of each part of enclosure particularly vibrating diaphragm.
In the present embodiment, becket outer sheath is equipped with dead ring 9.In order to prevent becket from contacting with outer casing inner wall and short-circuit, becket outer sheath equipped with dead ring, can be isolated by dead ring, thus improving the stability of this SMD earphone line control microphone by becket and shell.
In the present invention, it is pasted with Air Filter 10 outside outer casing bottom.In order to prevent the impurity in air-flow from entering inside this SMD earphone line control microphone by airflow hole, it is pasted with Air Filter in shell bottom outside, impurity can be filtered after setting Air Filter it is ensured that the sensitivity of this SMD earphone line control microphone and life-span.
In the present invention, described mozzle is the big conical tube in the little the inner in outer end.Because mozzle is the big conical tube in the little the inner in outer end, when therefore outer gas stream enters circuit board pore, the outer stomidium of less conical tube will be first passed through and then pass through larger interior stomidium again, finally could enter inner chamber of the present invention.In air-flow from less outer stomidium is to larger interior stomidium flow process, airflow passes aisle spare can become larger, and air-flow can gradually extend out.On the premise of air-flow total amount is certain, the air velocity flowing out conical tube can thereby serve to reduction of speed effect, greatly reduced the impact to vibrating diaphragm significantly lower than the air-flow entering conical tube.As a same reason, when air-flow flows to less outer end from the larger the inner of conical tube although flowing out the air velocity of conical tube quickly, but air velocity inside the present invention outwardly relatively low it is ensured that the safety in utilization of vibrating diaphragm.
Some copper dish 017 of loop circuit plate pore setting are installed with described circuit board, when water conservancy diversion tube end aligns with circuit board pore, two copper sheets with arbitrary to corresponding copper dish by scolding tin affixed afterwards determined by mozzle direction be unique.In patent of the present invention, mozzle one end is connected with circuit board, and the other end is arranged towards in the middle part of becket inwall, and therefore mozzle is obliquely installed for circuit board.As it was previously stated, mozzle there occurs change to the frequency of vibration of vibrating diaphragm after air-flow guiding towards in the middle part of becket inwall, reduce the instantaneous variation amount of vibrating diaphragm, so that sound is slowed down, protect vibrating diaphragm.In actual production, after mozzle fixation is welded on circuit board, this buffering effect just secures, and therefore can only be suitable for a kind of application of volume occasion.But in audio-video monitoring or collection occasion, when such as using indoors, surrounding is quieter, needs less to the buffer requirement of big volume sound；In outdoor application, affected by extraneous uncertain sound factors, need the buffering effect to burst of sound larger；In the big volume noise place such as heavy-duty machinery processing site, airport, plant equipment or aircraft harsh noise not only affect pickup effect and also can damage vibrating diaphragm, now just very big to the buffering effect of big volume.In the present invention, around circuit board pore, ring sets circle copper dish, and makes copper dish when water conservancy diversion tube end is alignd with circuit board pore, and mozzle two copper sheet corresponds setting with arbitrary to corresponding copper dish.So, when copper sheet is adjacent to from different copper dish, the pendulum angle of mozzle opposing circuit board is different, and the position towards becket inwall is also different, also just different to the buffering effect of air-flow.Therefore, can determine that copper sheet is adjacent to copper dish with that according to actual needs, and it is fixing with scolding tin 018, in other words, after can welding from different copper dish according to copper sheet, produced different buffering effects are classified to the present invention, so that it is determined that different application places or sales orientation, greatly save and repeat research and development, open up the costs such as mould, inspection because what exploitation different demands product caused.
Claims (5)
1. a kind of SMD earphone line control microphone, is characterized in that：Including shell（1）, shell（1）Intracavity bottom is provided with metal polar plate
(2）, pole plate（2）It is provided with pole plate pore（11）, pole plate（2）Top is provided with insulation gasket ring（3）, insulate gasket ring（3）Upper surface tension be pasted with vibrating diaphragm（4）, vibrating diaphragm（4）Plating nickel on surface, vibrating diaphragm（4）Top is provided with becket（5）, becket（5）Top is provided with circuit board（6）, circuit board（6）It is provided with circuit board pore（12）, shell（1）Top pass through to in-flanges form by above-mentioned each compressing parts together, circuit board（6）Outside is provided with wiring copper coin（7）, shell（1）Bottom is provided with and vibrating diaphragm（4）The corresponding airflow hole in position（8）, circuit board（6）On be welded with and circuit board pore（12）Corresponding mozzle（013）, mozzle（013）End is installed with two symmetrically arranged copper sheets stretching out（014）, copper sheet（014）It is welded on circuit board（6）Inner side, mozzle（013）Towards becket（5）Tilt in the middle part of inwall, also include PWB plate（13）, PWB plate（13）It is provided with and wiring copper coin（7）Corresponding two pads（14）, pad（14）By solder(ing) paste（015）With wiring copper coin（7）It is pasted together, PWB plate（13）It is provided with some close pads（14）The passage of setting（016）, PWB plate（13）On be welded with and two pads（14）Electric capacity in parallel（15）, diode（16）And switch（17）, switch（17）Positive terminal is electrically connected with electrode line（18）And power line（19）, electrode line（18）In be serially connected with output capacitance（20）, power line（19）In be serially connected with load resistance（21）.
2. a kind of SMD earphone line control microphone as claimed in claim 1, is characterized in that：Becket（5）Outer sheath is equipped with dead ring（9）.
3. a kind of SMD earphone line control microphone as claimed in claim 1 or 2, is characterized in that：Shell（1）Bottom outside is pasted with Air Filter（10）.
4. a kind of SMD earphone line control microphone as claimed in claim 3, is characterized in that：Described mozzle（013）For the big conical tube in the little the inner in outer end.
5. a kind of SMD earphone line control microphone as claimed in claim 4, is characterized in that：Described circuit board（6）On be installed with loop circuit plate pore（12）Some copper dish of setting（017）, mozzle（013）End and circuit board pore（12）During alignment, two copper sheets（014）With arbitrary to corresponding copper dish（017）By scolding tin（018）Mozzle determined by after affixed（013）Direction is unique.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510637896.9A CN106385648B (en) | 2015-10-07 | 2015-10-07 | Patch type earphone line control microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510637896.9A CN106385648B (en) | 2015-10-07 | 2015-10-07 | Patch type earphone line control microphone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106385648A true CN106385648A (en) | 2017-02-08 |
| CN106385648B CN106385648B (en) | 2019-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510637896.9A Active CN106385648B (en) | 2015-10-07 | 2015-10-07 | Patch type earphone line control microphone |
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| CN (1) | CN106385648B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200969679Y (en) * | 2006-10-18 | 2007-10-31 | 潍坊歌尔电子有限公司 | Electret microphone |
| JP2008042310A (en) * | 2006-08-02 | 2008-02-21 | Rion Co Ltd | Hearing aid |
| CN201114760Y (en) * | 2007-10-12 | 2008-09-10 | 深圳市豪恩电声科技有限公司 | A solid conductive microphone |
| CN202679619U (en) * | 2012-07-11 | 2013-01-16 | 深圳市新厚泰塑胶电子有限公司 | An electret microphone |
-
2015
- 2015-10-07 CN CN201510637896.9A patent/CN106385648B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008042310A (en) * | 2006-08-02 | 2008-02-21 | Rion Co Ltd | Hearing aid |
| CN200969679Y (en) * | 2006-10-18 | 2007-10-31 | 潍坊歌尔电子有限公司 | Electret microphone |
| CN201114760Y (en) * | 2007-10-12 | 2008-09-10 | 深圳市豪恩电声科技有限公司 | A solid conductive microphone |
| CN202679619U (en) * | 2012-07-11 | 2013-01-16 | 深圳市新厚泰塑胶电子有限公司 | An electret microphone |
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| CN106385648B (en) | 2019-05-14 |
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Effective date of registration: 20191205 Address after: 261200 building 7, no.1369, Zhengtai Road, Fangzi District, Weifang City, Shandong Province Patentee after: Shandong Xingang Electronic Technology Co., Ltd Address before: 261061 No. 619 North Sea Road, hi tech Zone, Shandong, Weifang Patentee before: Weifang Xingang Electronics Co., Ltd. |