CN107708051A - Preparation method, the diaphragm of loudspeaker and the loudspeaker monomer of the diaphragm of loudspeaker - Google Patents
Preparation method, the diaphragm of loudspeaker and the loudspeaker monomer of the diaphragm of loudspeaker Download PDFInfo
- Publication number
- CN107708051A CN107708051A CN201710995783.5A CN201710995783A CN107708051A CN 107708051 A CN107708051 A CN 107708051A CN 201710995783 A CN201710995783 A CN 201710995783A CN 107708051 A CN107708051 A CN 107708051A
- Authority
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- China
- Prior art keywords
- mould
- loudspeaker
- diaphragm
- silicon rubber
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
- H04R2231/001—Moulding aspects of diaphragm or surround
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Abstract
The invention discloses a kind of preparation method of the diaphragm of loudspeaker, the diaphragm of loudspeaker and loudspeaker monomer.The preparation method includes：UV crosslinking agents are added into silicon rubber base material；The silicon rubber base material for adding UV crosslinking agents is placed into the cavity of mould formation, mould includes upper die and lower die, and at least one material by permeable UV light in upper die and lower die is made；Using UV light through upper mould and/or the silicon rubber base material of lower mould irradiation addition UV crosslinking agents, to form the diaphragm of loudspeaker.The preparation method is carried out at room temperature, and shaping speed is fast, and production efficiency is high, and inprocess shrinkage is small.
Description
Technical field
The present invention relates to technical field of material, more particularly, to a kind of preparation method of the diaphragm of loudspeaker, raises one's voice
Device vibrating diaphragm and loudspeaker monomer.
Background technology
The quality of diaphragm of loudspeaker performance directly affects the quality of loudspeaker.Silicon rubber is as a kind of temperature tolerance is good, resilience
The good material of property is widely used in loudspeaker field.
At present, it is mainly high-temperature silicon disulfide rubber in the diaphragm of loudspeaker.High-temperature silicon disulfide rubber is needed in high temperature, high-pressure section
It is molded under part by the vulcanization of long period.Usual forming temperature is at 120 DEG C -200 DEG C, and molding time was at -200 seconds 30 seconds.
So, cause the low production efficiency of vibrating diaphragm and energy consumption is higher.
In addition, there is the problem of molding sulfuration after-contraction in high-temperature silicon disulfide rubber.Linear shrinkage is up to 3%-5%.This
Sample, cause the size difference of vibrating diaphragm larger, preferable product size can not be obtained.In addition, linear shrinkage easily causes greatly vibrating diaphragm
Deformation.
The content of the invention
It is an object of the present invention to provide a kind of new solution of the preparation method of the diaphragm of loudspeaker.
A kind of according to an aspect of the invention, there is provided preparation method of the diaphragm of loudspeaker.The preparation method includes：To
UV crosslinking agents are added in silicon rubber base material；The silicon rubber base material for adding UV crosslinking agents is placed into the cavity of mould formation, institute
Stating mould includes upper die and lower die, at least one material by can pass through UV light in the upper mould and the lower mould make and
Into；Using UV light through the upper mould and/or the silicon rubber base material of lower mould irradiation addition UV crosslinking agents, shaken with forming loudspeaker
Film.
Alternatively, the silicon rubber base material is liquid silastic or firm silicone rubber.
Alternatively, the UV crosslinking agents are selected from benzoin and derivative, benzil class crosslinking agent, the crosslinking of alkylbenzene ketone
Agent, acyl group phosphorous oxides crosslinking agent, benzophenone crosslinking agent, thioxanthones crosslinking agent, diaryl group iodized salt, triaryl iodine
One or more mixtures in salt, alkyl salt compounded of iodine, isopropylbenzene cyclopentadienyl iron hexafluorophosphate..
Alternatively, the material of the permeable UV light is polymethyl methacrylate, polyethylene glycol adipate or poly- carbon
Acid esters.
Alternatively, the material of the permeable UV light is quartz glass or high borax glass.
Alternatively, the silicon rubber base material for adding UV crosslinking agents is placed into by the mould using the method for molding or injection
In.
Alternatively, the upper mould is made by the material that can pass through UV light, and the mould also includes upper shell, it is described on
Housing is connected with the upper mould, and the upper mould is located in the upper shell, the upper shell and it is described on shape between mould
Into cavity, the upper shell and it is described on be provided with UV light sources in the cavity that is formed between mould, the upper shell is fastened on institute
State on lower mould, closed shaping mold cavity is formed between mould and the lower mould on described.
Alternatively, the time of UV light irradiations is the 10-30 seconds.
According to another aspect of the present invention, there is provided a kind of diaphragm of loudspeaker.The diaphragm of loudspeaker is provided by the present invention
Preparation method be made.
According to a further aspect of the invention, there is provided a kind of diaphragm of loudspeaker.The silicon that the diaphragm of loudspeaker is solidified by UV
Rubber is made.
According to the fourth aspect of the invention, there is provided a kind of loudspeaker monomer.The monomer includes provided by the invention described
The diaphragm of loudspeaker.
It was found by the inventors of the present invention that in the prior art, the existing diaphragm of loudspeaker is using silicon rubber high temperature, high pressure sulphur
Change is solidified, molding time length.Therefore, the technical assignment or technical problem to be solved that the present invention to be realized are these
It is that art personnel never expect or it is not expected that, therefore the present invention is a kind of new technical scheme.
In an embodiment of the present invention, the solidification of silicon rubber base material is by the way of UV light irradiations.UV crosslinking curings are with passing
The method of high temperature vulcanized solidification of uniting is compared, and can shorten hardening time.And the crosslinking of silicon rubber base material can be realized at room temperature
Reaction, reduces the requirement to temperature, pressure, has saved production cost.
In addition, when the diaphragm of loudspeaker and top dome, housing are integrally formed, the methods of UV crosslinking curings to top dome (Dome) and
The durothermic requirement of housing reduces, and so can further save production cost.When making, housing and top dome are put first
Put in mould；Then by the silicon rubber base material injection mould for adding UV crosslinking agents；Finally use UV light irradiations, with carry out into
Type.The manufacturing process is carried out at room temperature.
In addition, the inprocess shrinkage for the diaphragm of loudspeaker that the method for UV crosslinking curings is formed is small, and typically smaller than 0.5%, this makes
Obtain the diaphragm of loudspeaker to be unlikely to deform, dimensional accuracy is high, high yield rate.
Further, since being solidified at room temperature, the deformation of the diaphragm of loudspeaker is small, therefore the mechanical property of the diaphragm of loudspeaker,
Heat resistance is more excellent.
By referring to the drawings to the present invention exemplary embodiment detailed description, further feature of the invention and its
Advantage will be made apparent from.
Brief description of the drawings
It is combined in the description and the accompanying drawing of a part for constitution instruction shows embodiments of the invention, and even
It is used for the principle for explaining the present invention together with its explanation.
Fig. 1 is the flow chart of the preparation method of the diaphragm of loudspeaker according to an embodiment of the invention.
Fig. 2 is the structural representation of mould according to an embodiment of the invention.
Description of reference numerals：
11：Upper shell；12：UV light sources；13：Upper mould；14：Shaping mold cavity；15：Lower mould.
Embodiment
The various exemplary embodiments of the present invention are described in detail now with reference to accompanying drawing.It should be noted that：Unless have in addition
Body illustrates that the unlimited system of part and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The scope of invention.
The description only actually at least one exemplary embodiment is illustrative to be never used as to the present invention below
And its application or any restrictions that use.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.
Fig. 1 is the flow chart of the preparation method of the diaphragm of loudspeaker according to an embodiment of the invention.
As shown in figure 1, the preparation method includes：
S1, UV crosslinking agents are added into silicon rubber base material.
Alternatively, silicon rubber base material is liquid silastic or firm silicone rubber.
Wherein, liquid silastic is two-component additivity silicon rubber.Liquid silastic has good fluidity, and vulcanization is fast, can
The characteristics of cast or injection moulding.When adding UV crosslinking agents, user can make UV crosslinking agents point in a manner of direct use stirring
Dissipate uniform.
When silicon rubber base material is firm silicone rubber, when adding UV crosslinking agents, firm silicone rubber can be in mill
It is kneaded, so that UV crosslinking agents are uniformly dispersed.
Alternatively, UV crosslinking agents are selected from benzoin and derivative, benzil class crosslinking agent, alkylbenzene ketone crosslinking agent, acyl
Base phosphorous oxides crosslinking agent, benzophenone crosslinking agent, thioxanthones crosslinking agent, diaryl group iodized salt, triaryl salt compounded of iodine,
One or more mixtures in alkyl salt compounded of iodine, isopropylbenzene cyclopentadienyl iron hexafluorophosphate.Photograph of the above-mentioned UV crosslinking agents in UV light
Penetrate that the lower curing rate that can make silicon rubber base material is fast, and solidification effect is good.
Preferably, the mass ratio of UV crosslinking agents and silicon rubber base material is 0.1：100-5：100.In the proportion,
The curing rate of silicon rubber base material is moderate, and the structural strength of the diaphragm of loudspeaker formed is high, and reliability is good.
It should be noted that those skilled in the art can according to be actually needed selection silicon rubber base material, UV crosslinking agents with
And the ratio of the two.
S2, by add UV crosslinking agents silicon rubber base material be placed into mould formation cavity in.
Wherein, mould includes upper mould 13 and lower mould 15.It is at least one by can pass through UV light in upper mould 13 and lower mould 15
Material is made.
The material that can pass through UV light is transparent plastic or glass.The wide material sources of these materials, UV light transmission rates are high.
Alternatively, transparent plastic is polymethyl methacrylate, polyethylene glycol adipate or makrolon.Above-mentioned material
UV light transmission rates it is high, be easily worked and good tolerance.
Alternatively, glass is quartz glass or high borax glass.The UV light transmission rates of both glass are high.
Those skilled in the art can set the above material of mould 13 and lower mould 15, size, structure etc. according to being actually needed.
Fig. 2 is the structural representation of mould according to an embodiment of the invention.
As shown in Fig. 2 upper mould 13 is made by the material that can pass through UV light.Mould also includes upper shell 11.Upper shell
11 are connected with upper mould 13, and upper mould 13 is located in upper shell 11.Cavity is formed between upper shell 11 and upper mould 13.In upper casing
UV light sources 12 are provided with the cavity formed between body 11 and upper mould 13.Upper shell 11 is fastened on lower mould 15.In the upper He of mould 13
Closed shaping mold cavity 14 is formed between lower mould 15.
Specifically, upper mould 13 is made by polymethyl methacrylate.Upper shell 11 and lower mould 15 can be by metals
Material is made.The silicon rubber base material of addition UV crosslinking agents, which is injected into shaping mold cavity 14, to be molded.
In this example embodiment, upper mould 13, upper shell 11 and UV light sources 12 form black box, and integrated level is high, this cause matched moulds,
Die sinking becomes easy, improves the production efficiency of the diaphragm of loudspeaker.
(not shown) in other examples, lower mould are made by the material that can pass through UV light.Mould also includes lower house.
Lower house is connected with lower mould, and lower mould is located in lower house.Cavity is formed between lower house and lower mould.In lower house with
UV light sources are provided with the cavity formed between mould.It is fastened on upper mould on lower house.Formed between upper die and lower die closed
Shaping mold cavity.The mould equally has the characteristics of integrated level is high, production efficiency is high.
It is of course also possible to be, upper die and lower die are using the material that can pass through UV light.Mould also includes upper shell and lower casing
Body.Upper shell connects with upper mould, and upper mould is located in upper shell.Cavity is formed between upper shell and upper mould.Lower house with
Lower mould connection, and lower mould is located in lower house.Cavity is formed between lower house and lower mould.It is all provided with above-mentioned two cavity
It is equipped with UV light sources.Upper shell is fastened on lower house.Closed shaping mold cavity is formed between upper die and lower die.Two UV light sources
Upper die and lower die are passed through respectively, the silicon rubber base material of the addition UV crosslinking agents in shaping mold cavity are irradiated, to be molded.
In addition, the mould forms closed shaping mold cavity, suitable for high-pressure injection or molding, to eliminate silicon rubber base
Bubble in material, improves Forming Quality.
Preferably, the silicon rubber base material for adding UV crosslinking agents is placed into mould using the method for molding or injection to be formed
Cavity in.Both modes have the characteristics of fast speed of production, efficiency high.
During using mould pressing method, the silicon rubber base material for adding UV crosslinking agents is placed on lower mould 15 first, then matched moulds, enters
Row molding, to drive bubble away.
During using injecting method, the silicon rubber base material for adding UV crosslinking agents is expelled to shaping mold cavity under the pressure of setting
In 14.
S3, the silicon rubber base material for adding UV crosslinking agents is irradiated through upper mould and/or lower mould using UV light, to form loudspeaker
Vibrating diaphragm.
Wherein, can be by mould in UV light irradiations, so that UV light is saturating when upper mould is made using the material that can pass through UV light
Cross the silicon rubber base material of mould irradiation addition UV crosslinking agents.Either, can when lower mould is made using the material that can pass through UV light
With by mould under UV light irradiations, so that UV light is through the silicon rubber base material of lower mould irradiation addition UV crosslinking agents.Either, in upper mould
, can be by mould in UV light irradiations and/or lower mould, so that UV light passes through when being made with lower mould using the material that can pass through UV light
The silicon rubber base material of upper mould and/or lower mould irradiation addition UV crosslinking agents.
So, by the irradiation of UV light, UV crosslinking agents trigger the solidification of silicon rubber base material, so as to form raising one's voice for setting shape
Device vibrating diaphragm.
Further, UV light irradiations are carried out at room temperature.
Preferably, the time of UV light irradiations is the 10-30 seconds.The irradiation time can be fully cured silicon rubber base material.Should
The shaping speed of method is fast.And high-temperature silicon disulfide rubber at least needs to solidify for more than 30 seconds.
Furthermore, it is possible to using repeatedly irradiation, to reach preferable solidification effect.
In an embodiment of the present invention, the solidification of silicon rubber base material is by the way of UV light irradiations.UV crosslinking curings are with passing
The method of high temperature vulcanized solidification of uniting is compared, and can shorten hardening time.And the crosslinking of silicon rubber base material can be realized at room temperature
Reaction, reduces the requirement to temperature, pressure, has saved production cost.
In addition, when the diaphragm of loudspeaker and top dome, housing are integrally formed, the methods of UV crosslinking curings to top dome (Dome) and
The durothermic requirement of housing reduces, and so can further save production cost.When making, housing and top dome are put first
Put in mould；Then by the silicon rubber base material injection mould for adding UV crosslinking agents；Finally use UV light irradiations, with carry out into
Type.The manufacturing process is carried out at room temperature.
In addition, the inprocess shrinkage for the diaphragm of loudspeaker that the method for UV crosslinking curings is formed is small, and typically smaller than 0.5%, this makes
Obtain the diaphragm of loudspeaker to be unlikely to deform, dimensional accuracy is high, high yield rate.
Further, since being solidified at room temperature, the deformation of the diaphragm of loudspeaker is small, therefore the mechanical property of the diaphragm of loudspeaker,
Heat resistance is more excellent.
According to another embodiment of the invention, there is provided a kind of diaphragm of loudspeaker.The diaphragm of loudspeaker is solidified by UV
Silicon rubber is made.
Wherein, the silicon rubber of UV solidifications can add UV crosslinking agents into silicon rubber base material to be formed.
Alternatively, UV crosslinking agents are selected from benzoin and derivative, benzil class crosslinking agent, alkylbenzene ketone crosslinking agent, acyl
Base phosphorous oxides crosslinking agent, benzophenone crosslinking agent, thioxanthones crosslinking agent, diaryl group iodized salt, triaryl salt compounded of iodine,
One or more mixtures in alkyl salt compounded of iodine, isopropylbenzene cyclopentadienyl iron hexafluorophosphate.Photograph of the above-mentioned UV crosslinking agents in UV light
Penetrate that the lower curing rate that can make silicon rubber base material is fast, and solidification effect is good.
Further, the mass ratio of UV crosslinking agents and silicon rubber base material is 0.1：100-5：100.In the proportion
Interior, the curing rate of silicon rubber base material is moderate, and the structural strength of the diaphragm of loudspeaker formed is high, and reliability is good.
It should be noted that those skilled in the art can according to be actually needed selection silicon rubber base material, UV crosslinking agents with
And the ratio of the two.
The diaphragm of loudspeaker has the characteristics of neat appearance, good tolerance, good temperature tolerance.
According to still another embodiment of the invention, there is provided a kind of loudspeaker monomer.The loudspeaker monomer includes the present invention
The diaphragm of loudspeaker of offer.
In one example, loudspeaker monomer includes housing, vibrational system and magnetic circuit system.Vibrational system includes loudspeaker
Vibrating diaphragm, top dome and voice coil loudspeaker voice coil.The diaphragm of loudspeaker is ring vibrating diaphragm.The outward flange of vibrating diaphragm is together with case bonding.Top dome is bonded
In the central part of the diaphragm of loudspeaker.One end of voice coil loudspeaker voice coil is bonded in central part, and the other end is inserted in the magnetic gap of magnetic circuit system.Shake
Dynamic system and the common knowledge that the operation principle of magnetic circuit system is this area, do not elaborate herein.
The loudspeaker monomer has the characteristics of sound effect is good, good tolerance.
Although some specific embodiments of the present invention are described in detail by example, the skill of this area
Art personnel it should be understood that example above merely to illustrating, the scope being not intended to be limiting of the invention.The skill of this area
Art personnel to above example it should be understood that can modify without departing from the scope and spirit of the present invention.This hair
Bright scope is defined by the following claims.
Claims (11)
- A kind of 1. preparation method of the diaphragm of loudspeaker, it is characterised in that including：UV crosslinking agents are added into silicon rubber base material；The silicon rubber base material for adding UV crosslinking agents being placed into the cavity of mould formation, the mould includes upper die and lower die, At least one material by can pass through UV light in the upper mould and the lower mould is made；Using UV light through the upper mould and/or the silicon rubber base material of lower mould irradiation addition UV crosslinking agents, shaken with forming loudspeaker Film.
- 2. preparation method according to claim 1, it is characterised in that the silicon rubber base material is liquid silastic or solid Silicon rubber.
- 3. preparation method according to claim 1, it is characterised in that the UV crosslinking agents be selected from benzoin and derivative, Benzil class crosslinking agent, alkylbenzene ketone crosslinking agent, acyl group phosphorous oxides crosslinking agent, benzophenone crosslinking agent, thioxanthone Class crosslinking agent, diaryl group iodized salt, triaryl salt compounded of iodine, alkyl salt compounded of iodine, one kind in isopropylbenzene cyclopentadienyl iron hexafluorophosphate or A variety of mixtures.
- 4. according to the preparation method described in claim any one of 1-3, it is characterised in that the material of the permeable UV light is poly- Methyl methacrylate, polyethylene glycol adipate or makrolon.
- 5. according to the preparation method described in claim any one of 1-3, it is characterised in that the material of the permeable UV light is stone English glass or high borax glass.
- 6. according to the preparation method described in claim any one of 1-3, it is characterised in that will using molding or the method injected The silicon rubber base material of addition UV crosslinking agents is placed into the mould.
- 7. according to the preparation method described in claim any one of 1-3, it is characterised in that the upper mould by can pass through UV light material Material is made, and the mould also includes upper shell, and the upper shell is connected with the upper mould, and the upper mould is positioned at described In upper shell, the upper shell and it is described on form cavity between mould, the upper shell and it is described on formed between mould UV light sources are provided with cavity, the upper shell is fastened on the lower mould, is formed on described between mould and the lower mould close The shaping mold cavity closed.
- 8. according to the preparation method described in claim any one of 1-3, it is characterised in that the time of UV light irradiations is the 10-30 seconds.
- 9. a kind of diaphragm of loudspeaker, it is characterised in that prepared as the preparation method as described in any one in claim 1-8 Form.
- 10. a kind of diaphragm of loudspeaker, it is characterised in that be made by the UV silicon rubber solidified.
- 11. a kind of loudspeaker monomer, it is characterised in that including the diaphragm of loudspeaker as described in claim 9 or 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710995783.5A CN107708051A (en) | 2017-10-23 | 2017-10-23 | Preparation method, the diaphragm of loudspeaker and the loudspeaker monomer of the diaphragm of loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710995783.5A CN107708051A (en) | 2017-10-23 | 2017-10-23 | Preparation method, the diaphragm of loudspeaker and the loudspeaker monomer of the diaphragm of loudspeaker |
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| Publication Number | Publication Date |
|---|---|
| CN107708051A true CN107708051A (en) | 2018-02-16 |
Family
ID=61182045
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710995783.5A Pending CN107708051A (en) | 2017-10-23 | 2017-10-23 | Preparation method, the diaphragm of loudspeaker and the loudspeaker monomer of the diaphragm of loudspeaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN107708051A (en) |
Cited By (3)
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|---|---|---|---|---|
| CN110166901A (en) * | 2019-05-31 | 2019-08-23 | 歌尔股份有限公司 | The processing method of vibrating diaphragm component, acoustic mode group and acoustic mode group |
| CN110225438A (en) * | 2019-05-31 | 2019-09-10 | 歌尔股份有限公司 | The processing method of acoustic mode group and acoustic mode group |
| WO2022062817A1 (en) * | 2020-09-23 | 2022-03-31 | 歌尔股份有限公司 | Diaphragm of sound production device and preparation method therefor, and sound production device |
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| CN110166901A (en) * | 2019-05-31 | 2019-08-23 | 歌尔股份有限公司 | The processing method of vibrating diaphragm component, acoustic mode group and acoustic mode group |
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| WO2022062817A1 (en) * | 2020-09-23 | 2022-03-31 | 歌尔股份有限公司 | Diaphragm of sound production device and preparation method therefor, and sound production device |
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