CN102638597A - Waterproof breathable wideband microphone for mobile phone - Google Patents
Waterproof breathable wideband microphone for mobile phone Download PDFInfo
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- CN102638597A CN102638597A CN2012101161872A CN201210116187A CN102638597A CN 102638597 A CN102638597 A CN 102638597A CN 2012101161872 A CN2012101161872 A CN 2012101161872A CN 201210116187 A CN201210116187 A CN 201210116187A CN 102638597 A CN102638597 A CN 102638597A
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- waterproof
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- vibrating diaphragm
- microphone
- mobile phone
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Abstract
The invention relates to a waterproof breathable wideband microphone for a mobile phone. The waterproof breathable wideband microphone comprises a shell body with an upper end opening and a lower end opening, wherein a reticular cover is mounted at the upper end opening of the shell body, and a magnetic cover is mounted at the lower end opening of the shell body; a closed accommodating space is formed between the reticular cover and the magnetic cover; a vibrating diaphragm and a voice coil are arranged at the upper part of the accommodating space; a magnet is fixedly arranged on the upper end face of the magnetic cover; a polar sheet is fixedly arranged on the upper end face of the magnet; the magnetic cover is provided with a first through hole; the magnet is provided with a second through hole; the polar sheet is provided with a third through hole; the first through hole, the second through hole and the third through hole are communicated with one another to form a sealed breathable channel; and a waterproof breathable membrane is arranged at the upper end of the third through hole. According to the waterproof breathable wideband microphone for the mobile phone, the waterproof requirements can meet the standards of the protective security level IP67 in the mobile phone industry; the sensitivity of the microphone can reach or be over 85+/-3 dB that of the conventional microphone through the design of the magnet; and moreover, the vibrating diaphragm is thinned through stretching by adopting a stretching process, so that the harmonic frequency of the microphone can reach or be over 600+/-20% Hz that of the conventional microphone.
Description
Technical field
The present invention relates to the mobile phone component in a kind of electronic product, be specifically related to a kind of mobile phone with waterproof and breathable broadband microphone.
Background technology
Along with the development of society, people are increasingly high to the functional requirement of mobile phone, and function miscellaneous all is loaded into above the mobile phone, make the more convenient use mobile phone of people.But people in use find all mobile phones a fatal defective is arranged all, that is exactly that mobile phone is non-watertight, rains, mobile phone falls in the water or be placed on and knock cup water on the desk because of carelessness over and flow to the use that mobile phone inside all can have influence on mobile phone.Trying every possible means to develop full waterproof mobile phone to a lot of mobile phone vendors of this defective commercial city, the just surface waterproofing that the domestic same industry can be done, it need need design air-vent behind at microphone; Thereby cause the microphone can't waterproof; After the mobile phone water inlet, microphone is cisco unity malfunction just, finally causes microphone to damage; Shorten the useful life of microphone, influence the use of mobile phone.The vibrating diaphragm of existing mobile phone microphone is when conventional mould molding, because unbalance stress during the cause moulding of vibrating diaphragm shape, edge can appear in the vibrating diaphragm of moulding has the attenuation phenomenon, has reduced the transaudient quality of microphone.
Summary of the invention
To above-mentioned technical problem, the present invention provides a kind of mobile phone with waterproof and breathable broadband microphone, and it has complete water-proof function; Even after microphone water inlet, also can operate as normal, guaranteed the normal use of microphone; Prolong its useful life, improve the transaudient quality of microphone.
Realize that technical scheme of the present invention is following:
Mobile phone is with waterproof and breathable broadband microphone, and it comprises the housing of both ends open up and down, and the open upper end of housing is equipped with guard, lower ending opening is equipped with the magnetic cover; Between guard and magnetic cover, form the spatial accommodation of sealing, spatial accommodation top is provided with vibrating diaphragm, voice coil loudspeaker voice coil, and the upper surface of said magnetic cover is set with magnet; Upper surface at magnet is set with pole piece; Offer first through hole on the said magnetic cover, offer second through hole on the magnet, offer third through-hole on the pole piece; Said first through hole, second through hole, third through-hole connect the gas-permeable channels that constitutes sealing each other; The upper end of third through-hole is provided with waterproof ventilated membrane, and this waterproof ventilated membrane comprises waterproof top layer, waterproof nexine, and the microporous membrane between waterproof top layer and waterproof nexine.
Said microporous membrane is the microporous membrane that polytetrafluoroethylene forms through expanded biaxial tension.The waterproof ventilated membrane of being made up of top layer, nexine and microporous membrane has the function of waterproof and breathable; Be that the outside water of microphone has entered not microphone inside; Inner sound, the gas of microphone can spread out of; Thereby in microphone trickle or when immersion, microphone can also operate as normal, prolongs the useful life of microphone.
Said magnet is square magnet.The design of square magnet has increased the magnetic energy product of magnet, thereby has improved the BL value of product, and magnetic gap reduces, thereby has improved the magnetic conduction ability of pole piece.
The top of said spatial accommodation is provided with fixed head, and voice coil loudspeaker voice coil is fixedly installed on the fixed head below, and one side of vibrating diaphragm is connected with fixed head, and another side is connected with inner walls.When microphone was worked, vibrating diaphragm can produce up-and-down motion, in order to prevent the distortion of vibrating diaphragm, so be provided with fixed head, to prevent the distortion of vibrating diaphragm, guaranteed the operate as normal of vibrating diaphragm.
The diameter of said first through hole, second through hole, third through-hole is at 1mm---in the 3mm scope.
The diameter of said first through hole, second through hole, third through-hole is 2mm.
The thickness of said waterproof ventilated membrane is 100 μ m---200 μ m.
The thickness of said waterproof ventilated membrane is 150 μ m.
Said vibrating diaphragm comprises ground floor PAR film, second layer PAR film, the 3rd layer of PAR film, between said ground floor PAR film, second layer PAR film, the 3rd layer of PAR film through glue bond.
The thickness of said ground floor PAR film, second layer PAR film, the 3rd layer of PAR film is 5 μ m---15 μ m.
A kind of drawing process of vibrating diaphragm, it may further comprise the steps,
Step 1: counterdie is heated, make the counterdie temperature rise to the heat distortion temperature of vibrating diaphragm;
Step 2: will be placed in the counterdie greater than the vibrating diaphragm that needs thickness, the temperature through lower mold body makes vibrating diaphragm produce preliminary deformation;
Step 3: exert pressure to patrix, make patrix and counterdie matched moulds, through the extruding of upper die and lower die, the thickness of vibrating diaphragm is compressed in 0.02mm---between the 0.03mm.
Step 4: cancellation separates patrix to the pressure of patrix from counterdie, takes out the vibrating diaphragm that is extruded again, accomplishes drawing high of vibrating diaphragm.
Leave between said patrix external diameter and the counterdie internal diameter and be used to push the discharging gap of drawing high the unnecessary material in back.
Adopt such scheme, on the magnetic cover, offered first through hole, offered second through hole on the magnet; Offer third through-hole on the pole piece; First through hole, second through hole, third through-hole connect the gas-permeable channels that constitutes sealing each other, are provided with waterproof ventilated membrane in the upper end of third through-hole, and the outside water of microphone just can not enter into microphone inside through gas-permeable channels like this; And inner sound, the gas of microphone can spread out of through gas-permeable channels; Thereby when microphone trickle or when immersion, microphone can also operate as normal, prolongs the useful life of microphone.Waterproof requirement of the present invention can satisfy the protection safety Grade I P67 standard in the mobile phone industry; And through to the design of magnet, the sensitivity of product is reached or surpass conventional microphone 85+/-3dB; Adopt in addition and draw high technology vibrating diaphragm is carried out tension-thining, the resonance frequency of product is reached or surpass conventional microphone 600+/-20%Hz.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of waterproof ventilated membrane among the present invention;
Fig. 3 is the structural representation of vibrating diaphragm among the present invention;
Fig. 4 is the mould that draws high of vibrating diaphragm;
Among the figure, 1 is housing, and 2 is guard, and 3 is the magnetic cover, and 4 is spatial accommodation; 5 is vibrating diaphragm, and 6 is voice coil loudspeaker voice coil, and 7 is magnet, and 8 is pole piece, and 9 is gas-permeable channels; 10 is waterproof ventilated membrane, and 11 is the waterproof top layer, and 12 is the waterproof nexine, and 13 is microporous membrane, and 14 is fixed head; 15 is ground floor PAR film, and 16 is second layer PAR film, and 17 is the 3rd layer of PAR film, and 18 is glue;
20 is heating wire, and 21 is counterdie, and 22 is vibrating diaphragm, and 23 is patrix.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is further specified.
Referring to Fig. 1,2,3, mobile phone is with waterproof and breathable broadband microphone, and it comprises the housing 1 of both ends open up and down; The open upper end of housing is equipped with guard 2, lower ending opening is equipped with magnetic cover 3, between guard 2 and magnetic cover 3, forms the spatial accommodation 4 of sealing, and spatial accommodation 4 tops are provided with vibrating diaphragm 5, voice coil loudspeaker voice coil 6; The upper surface of magnetic cover 3 is set with magnet 7; Be set with pole piece 8 in the upper surface of magnet 7, offer first through hole on the magnetic cover 3, offer second through hole on the magnet; Offer third through-hole on the pole piece; First through hole, second through hole, third through-hole connect the gas-permeable channels 9 that constitutes sealing each other, and the upper end of third through-hole is provided with waterproof ventilated membrane 10, and this waterproof ventilated membrane 10 comprises the waterproof top layer 11 that nylon or dacron are processed; The waterproof nexine 12 that RIPSTOP is processed, and the microporous membrane 13 between waterproof top layer 11 and waterproof nexine 12.Microporous membrane 13 is the microporous membrane that polytetrafluoroethylene forms through expanded biaxial tension.Thick about 20～100 μ m of this film, there is numerous ventilative aperture the centre, and porosity is 25%～96%, and average pore size is 0.1 μ m～0.5 μ m, utilizes this microporous membrane can reach ventilative effect; And waterproof action is played on top layer, nexine.
The thickness of waterproof ventilated membrane 10 is 100 μ m---200 μ m.During practical implementation, the thickness of waterproof ventilated membrane can be 100 μ m, 110 μ m, 120 μ m, 130 μ m, 140 μ m, 150 μ m, 160 μ m, 170 μ m, 180 μ m, 190 μ m, 200 μ m; In the present embodiment, the thickness of waterproof ventilated membrane is 150 μ m.
During practical implementation, magnet is square magnet; Thereby magnet makes square into by routine round improves the BL value of product with the magnetic energy product that increases magnet, magnetic gap by before 0.25 change into 0.17 improve pole piece the magnetic conduction ability, thereby the sensitivity of raising product.
In order to protect the distortion of vibrating diaphragm, be provided with fixed head 14 on the top of spatial accommodation 4, voice coil loudspeaker voice coil 6 is fixedly installed on fixed head 14 belows, and one side of vibrating diaphragm 5 is connected with fixed head 14, and another side is connected with housing 1 inwall.
Wherein, the diameter of first through hole, second through hole, third through-hole is at 1mm---in the 3mm scope; The diameter of first through hole, second through hole, third through-hole is preferably 2mm among the present invention, can certainly be 1mm or 1.5mm or 2.5mm or 3mm.
And vibrating diaphragm comprises ground floor PAR film 15, second layer PAR film 16, the 3rd layer of PAR film 17, is bonded to one through glue 18 between ground floor PAR film 15, second layer PAR film 16, the 3rd layer of PAR film 17.The thickness of ground floor PAR film, second layer PAR film, the 3rd layer of PAR film is 5 μ m---15 μ m.
Vibrating diaphragm is before being installed to microphone, because its thickness is thicker can not satisfy requirement of products, just need adopt mould that it is carried out drawing and forming, and existing vibrating diaphragm is when conventional die drawn moulding, and the vibrating diaphragm edge can attenuation, influences the stretching quality of vibrating diaphragm.Through the drawing process of a kind of vibrating diaphragm provided by the invention, can solve the problem of vibrating diaphragm edge thinning, guarantee the transaudient requirement that vibrating diaphragm is stressed evenly, thickness evenly satisfies microphone, it comprises the steps,
Step 1: counterdie is heated, make the counterdie temperature rise to the heat distortion temperature of vibrating diaphragm;
Step 2: will be placed in the counterdie greater than the vibrating diaphragm that needs thickness, the temperature through lower mold body makes vibrating diaphragm produce preliminary deformation;
Step 3: exert pressure to patrix, make patrix and counterdie matched moulds, through the extruding of upper die and lower die, the thickness of vibrating diaphragm is compressed in 0.02mm---between the 0.03mm.
Step 4: cancellation separates patrix to the pressure of patrix from counterdie, takes out the vibrating diaphragm that is extruded again, accomplishes drawing high of vibrating diaphragm.
Referring to Fig. 4; Drawing process to vibrating diaphragm specifies, and promptly utilizes heating wire 20 that counterdie 21 temperature are increased to the heat distortion temperature of vibrating diaphragm, vibrating diaphragm 22 is put in the counterdie again; Utilize cylinder to exert pressure for patrix 23 again and make patrix and counterdie matched moulds; Vibrating diaphragm temperature distortion in mould is squeezed into consistent thickness by mould again, and to reach the effect that draws high, the vibrating diaphragm thickness after being extruded is at 0.02mm---between the 0.03mm.Be used to push the discharging clearance D that draws high the unnecessary material in back and leave between patrix external diameter and the counterdie internal diameter, this discharging clearance D is 0.055mm.In the practical implementation, patrix 23 is processed for soft nylon material, and counterdie 21 is the brass counterdie, patrix and counterdie surfacing.
Claims (10)
1. mobile phone is characterized in that with waterproof and breathable broadband microphone: this microphone comprises the housing of both ends open up and down, and the open upper end of housing is equipped with guard, lower ending opening is equipped with the magnetic cover; Between guard and magnetic cover, form the spatial accommodation of sealing, spatial accommodation top is provided with vibrating diaphragm, voice coil loudspeaker voice coil, and the upper surface of said magnetic cover is set with magnet; Upper surface at magnet is set with pole piece; Offer first through hole on the said magnetic cover, offer second through hole on the magnet, offer third through-hole on the pole piece; Said first through hole, second through hole, third through-hole connect the gas-permeable channels that constitutes sealing each other; The upper end of third through-hole is provided with waterproof ventilated membrane, and this waterproof ventilated membrane comprises waterproof top layer, waterproof nexine, and the microporous membrane between waterproof top layer and waterproof nexine.
2. mobile phone according to claim 1 is characterized in that with waterproof and breathable broadband microphone: said microporous membrane is the microporous membrane that polytetrafluoroethylene forms through expanded biaxial tension.
3. mobile phone according to claim 1 is characterized in that with waterproof and breathable broadband microphone: said magnet is square magnet.
4. mobile phone according to claim 1 is with waterproof and breathable broadband microphone; It is characterized in that: the top of said spatial accommodation is provided with fixed head; Voice coil loudspeaker voice coil is fixedly installed on the fixed head below, and one side of vibrating diaphragm is connected with fixed head, and another side is connected with inner walls.
5. mobile phone according to claim 1 is characterized in that with waterproof and breathable broadband microphone: the diameter of said first through hole, second through hole, third through-hole is at 1mm---in the 3mm scope.
6. mobile phone according to claim 1 is characterized in that with waterproof and breathable broadband microphone: the thickness of said waterproof ventilated membrane is 100 μ m---200 μ m.
7. mobile phone according to claim 1 is with waterproof and breathable broadband microphone; It is characterized in that: said vibrating diaphragm comprises ground floor PAR film, second layer PAR film, the 3rd layer of PAR film, between said ground floor PAR film, second layer PAR film, the 3rd layer of PAR film through glue bond.
8. mobile phone according to claim 7 is characterized in that with waterproof and breathable broadband microphone: the thickness of said ground floor PAR film, second layer PAR film, the 3rd layer of PAR film is 5 μ m---15 μ m.
9. the drawing process of a vibrating diaphragm, it is characterized in that: it may further comprise the steps,
Step 1: counterdie is heated, make the counterdie temperature rise to the heat distortion temperature of vibrating diaphragm;
Step 2: will be placed in the counterdie greater than the vibrating diaphragm that needs thickness, the temperature through lower mold body makes vibrating diaphragm produce preliminary deformation;
Step 3: exert pressure to patrix, make patrix and counterdie matched moulds, through the extruding of upper die and lower die, the thickness of vibrating diaphragm is compressed in 0.02mm---between the 0.03mm.
Step 4: cancellation separates patrix to the pressure of patrix from counterdie, takes out the vibrating diaphragm that is extruded again, accomplishes drawing high of vibrating diaphragm.
10. the drawing process of a kind of vibrating diaphragm according to claim 9 is characterized in that: leave between said patrix external diameter and the counterdie internal diameter and be used to push the discharging gap of drawing high the unnecessary material in back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101161872A CN102638597A (en) | 2012-04-19 | 2012-04-19 | Waterproof breathable wideband microphone for mobile phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101161872A CN102638597A (en) | 2012-04-19 | 2012-04-19 | Waterproof breathable wideband microphone for mobile phone |
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| Publication Number | Publication Date |
|---|---|
| CN102638597A true CN102638597A (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101161872A Pending CN102638597A (en) | 2012-04-19 | 2012-04-19 | Waterproof breathable wideband microphone for mobile phone |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105050349A (en) * | 2015-08-31 | 2015-11-11 | 联志玩具礼品(东莞)有限公司 | Novel waterproof structure |
| CN106162457A (en) * | 2016-07-11 | 2016-11-23 | 深圳天珑无线科技有限公司 | Speaker and mobile device |
| CN107404692A (en) * | 2017-08-04 | 2017-11-28 | 奥音科技（镇江）有限公司 | A kind of protecgulum applied to electroacoustic transducer |
| CN107465980A (en) * | 2017-08-04 | 2017-12-12 | 奥音科技（镇江）有限公司 | One kind has chaffy electroacoustic transducer |
| CN113840025A (en) * | 2021-09-28 | 2021-12-24 | 维沃移动通信有限公司 | Electronic device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005046067A1 (en) * | 2003-11-08 | 2005-05-19 | Watercom Co., Ltd. | Mobile telephone having speaker with waterproof structure |
| CN201467397U (en) * | 2009-06-11 | 2010-05-12 | 杜为民 | Water-proof speaker |
| CN201830438U (en) * | 2010-09-06 | 2011-05-11 | 叶勇 | Waterproof horn with rivet |
| CN202587094U (en) * | 2012-04-19 | 2012-12-05 | 汉得利（常州）电子有限公司 | Waterproof breathable wideband microphone for mobile phone |
-
2012
- 2012-04-19 CN CN2012101161872A patent/CN102638597A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005046067A1 (en) * | 2003-11-08 | 2005-05-19 | Watercom Co., Ltd. | Mobile telephone having speaker with waterproof structure |
| CN201467397U (en) * | 2009-06-11 | 2010-05-12 | 杜为民 | Water-proof speaker |
| CN201830438U (en) * | 2010-09-06 | 2011-05-11 | 叶勇 | Waterproof horn with rivet |
| CN202587094U (en) * | 2012-04-19 | 2012-12-05 | 汉得利（常州）电子有限公司 | Waterproof breathable wideband microphone for mobile phone |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105050349A (en) * | 2015-08-31 | 2015-11-11 | 联志玩具礼品(东莞)有限公司 | Novel waterproof structure |
| CN106162457A (en) * | 2016-07-11 | 2016-11-23 | 深圳天珑无线科技有限公司 | Speaker and mobile device |
| CN107404692A (en) * | 2017-08-04 | 2017-11-28 | 奥音科技（镇江）有限公司 | A kind of protecgulum applied to electroacoustic transducer |
| CN107465980A (en) * | 2017-08-04 | 2017-12-12 | 奥音科技（镇江）有限公司 | One kind has chaffy electroacoustic transducer |
| CN113840025A (en) * | 2021-09-28 | 2021-12-24 | 维沃移动通信有限公司 | Electronic device |
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Application publication date: 20120815 |