CN110784817B - Preparation method of loudspeaker diaphragm, loudspeaker diaphragm and loudspeaker monomer - Google Patents
Preparation method of loudspeaker diaphragm, loudspeaker diaphragm and loudspeaker monomer Download PDFInfo
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- CN110784817B CN110784817B CN201910998924.8A CN201910998924A CN110784817B CN 110784817 B CN110784817 B CN 110784817B CN 201910998924 A CN201910998924 A CN 201910998924A CN 110784817 B CN110784817 B CN 110784817B
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- mica
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- 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
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/021—Diaphragms comprising cellulose-like materials, e.g. wood, paper, linen
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/023—Diaphragms comprising ceramic-like materials, e.g. pure ceramic, glass, boride, nitride, carbide, mica and carbon materials
Abstract
The invention provides a preparation method of a loudspeaker diaphragm, which comprises the following steps: adding mica and graphene powder into paper pulp, and uniformly stirring to form a paper pulp-mica-graphene mixture; and step two, injecting the paper pulp-mica-graphene mixture prepared in the step one into a diaphragm mold for cooling, and pressing the mixture at high pressure to form the loudspeaker diaphragm. The invention also provides a loudspeaker diaphragm and a loudspeaker monomer, wherein scaly mica is added into the paper pulp, so that the rigidity of the loudspeaker diaphragm can be changed, and the division vibration is not generated or reduced, thereby reducing the distortion. After adding the scale-shaped mica, the damping in the loudspeaker diaphragm is large, mechanical energy can be converted into heat energy, the division vibration of the loudspeaker diaphragm is inhibited, and the efficiency of the loudspeaker diaphragm is greatly improved. In addition, because graphite alkene granule is very little, can effectively fill the space between the paper pulp molecule, let the speaker vibrating diaphragm of making inseparabler, therefore intensity effectively strengthens.
Description
Technical Field
The invention relates to the technical field of loudspeaker manufacturing, in particular to a preparation method of a loudspeaker diaphragm, the loudspeaker diaphragm and a loudspeaker monomer.
Background
Because the structure of the cone loudspeaker is simple and the cost is low, the cone loudspeaker in the industry at present mostly takes the cone as the raw material. The television is ultrathin and ultra-narrow, only an elliptical or racetrack-shaped small cone can be used on the television, and the vibrating diaphragm in the minor axis direction of the elliptical or racetrack-shaped small cone is not uniformly stressed, has large distortion and is easy to deform.
In view of the above-mentioned drawbacks, it is desirable to provide a new method for preparing a loudspeaker diaphragm, a loudspeaker diaphragm and a loudspeaker unit.
Disclosure of Invention
The invention mainly aims to provide a preparation method of a loudspeaker diaphragm, and aims to solve the problems of large distortion and easy deformation of the existing loudspeaker diaphragm caused by uneven stress of the diaphragm in the short axis direction.
In order to achieve the above object, the present invention provides a method for preparing a loudspeaker diaphragm, wherein the method for preparing the loudspeaker diaphragm comprises:
adding mica and graphene powder into paper pulp, and uniformly stirring to form a paper pulp-mica-graphene mixture;
and step two, injecting the paper pulp-mica-graphene mixture prepared in the step one into a diaphragm mold for cooling, and pressing the mixture at high pressure to form the loudspeaker diaphragm.
Preferably, the first step includes:
according to the weight parts, 10-15 parts of flaky mica and 1-3 parts of graphene powder are added into 100 parts of paper pulp and uniformly stirred to form a paper pulp-mica-graphene mixture.
Preferably, the first step further comprises:
according to the weight parts, 5-10 parts of flaky mica and 3-5 parts of graphene powder are added into 100 parts of paper pulp and uniformly stirred to form a paper pulp-mica-graphene mixture.
Preferably, the first step further comprises:
according to the weight parts, 15-20 parts of flaky mica and 1-2 parts of graphene powder are added into 100 parts of paper pulp and uniformly stirred to form a paper pulp-mica-graphene mixture.
Preferably, the mica has a thickness of 90 to 100 μm.
Preferably, the particle size of the graphene powder is 2000-3000 meshes.
The invention also provides a loudspeaker diaphragm manufactured by the preparation method, which is characterized by comprising a central part, a fixed part and a folded ring part connecting the central part and the fixed part, wherein the central part is of an annular structure with an opening, the central part comprises a first vibrating part connected with the folded ring part and a second vibrating part connected with one end of the first vibrating part far away from the folded ring part, the shape of the cross section of the first vibrating part along the sound emitting direction of the loudspeaker diaphragm is linear or arc, and the shape of the cross section of the second vibrating part along the sound emitting direction of the loudspeaker diaphragm is linear.
Preferably, the thickness of the loudspeaker diaphragm is 0.2-0.3 mm, and the thickness of the bending ring part is smaller than that of the central part.
Preferably, the hinge portion includes two long shaft portions and two short shaft portions on opposite sides, respectively.
The invention also provides a loudspeaker single body, and the loudspeaker diaphragm is arranged on the loudspeaker single body.
In the technical scheme of the invention, the preparation method of the loudspeaker diaphragm comprises the following steps: adding mica and graphene powder into paper pulp, and uniformly stirring to form a paper pulp-mica-graphene mixture; and step two, injecting the paper pulp-mica-graphene mixture prepared in the step one into a diaphragm mold for cooling, and pressing the mixture at high pressure to form the loudspeaker diaphragm. In the invention, because the Young modulus E of mica is larger than that of paper pulp, scaly mica is added into the paper pulp, the rigidity of the loudspeaker diaphragm can be changed, and the splitting vibration is not generated or reduced, thereby reducing the distortion. Moreover, the scale-shaped mica is added into the paper pulp, so that the heat resistance and the moisture resistance of the loudspeaker diaphragm can be improved; after adding the scale-shaped mica, the damping in the loudspeaker diaphragm is large, mechanical energy can be converted into heat energy, the division vibration of the loudspeaker diaphragm is inhibited, and the efficiency of the loudspeaker diaphragm is greatly improved. In addition, as the graphene particles are extremely small, the gaps among paper pulp molecules can be effectively filled, so that the manufactured loudspeaker diaphragm is more compact, and the strength is effectively enhanced; and because graphite alkene itself is more smooth for be difficult to the adhesion between the speaker vibrating diaphragm of preparation and the mould, can effectively solve the difficult problem of speaker vibrating diaphragm drawing of patterns.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for manufacturing a loudspeaker diaphragm according to the present invention;
FIG. 2 is a schematic view of a cross-sectional structure of a loudspeaker diaphragm according to the present invention;
FIG. 3 is a frequency response curve diagram of a loudspeaker diaphragm prepared in example 2 of the present invention and a loudspeaker diaphragm prepared only with pulp in the prior art;
fig. 4 is a graph showing frequency response curves of the speaker diaphragms prepared in examples 2, 4 and 6 of the present invention;
fig. 5 is a schematic structural diagram of a loudspeaker diaphragm according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a preparation method of a loudspeaker diaphragm, and aims to solve the problems of large distortion and easy deformation of the existing loudspeaker diaphragm caused by uneven stress of the diaphragm in the short axis direction.
Referring to fig. 1, the present invention provides a method for preparing a loudspeaker diaphragm, including the following steps:
and S1, adding mica and graphene powder into the paper pulp, and uniformly stirring to form a paper pulp-mica-graphene mixture.
And S2, injecting the pulp-mica-graphene mixture prepared in the step S1 into a diaphragm mold for cooling, and pressing the mixture with high pressure to form the loudspeaker diaphragm.
Specifically, the Young modulus E of mica is larger than that of paper pulp, and the mica is added into the paper pulp, so that the rigidity of the loudspeaker diaphragm can be changed, the segmentation vibration is not generated or reduced, and the distortion is reduced; after adding the mica, can improve the heat-resisting moisture resistance of loudspeaker vibrating diaphragm to make the internal damping of loudspeaker vibrating diaphragm increase, can turn into heat energy with mechanical energy, restrain the vibration of cutting apart of loudspeaker vibrating diaphragm, improved the efficiency of loudspeaker vibrating diaphragm greatly. Among them, in order to allow a uniform film formation of the small thin speaker diaphragm, the filler added to the pulp is preferably a scale-like material, and therefore, the mica added to the pulp is preferably a scale-like mica. The graphene particles are extremely small, so that gaps among paper pulp molecules can be effectively filled, and the manufactured loudspeaker diaphragm is more compact, so that the strength is effectively enhanced; and because graphite alkene itself is more smooth for be difficult to the adhesion between the speaker vibrating diaphragm of preparation and the mould, effectively solve the difficult problem of speaker vibrating diaphragm drawing of patterns. Wherein the thickness of the mica is 90-100 μm, preferably 95 μm; the particle size of the graphene powder is 2000-3000 meshes, preferably 2800 meshes.
The loudspeaker diaphragm prepared by adding 10-15 parts by weight of flaky mica and 1-3 parts by weight of graphene powder into 100 parts by weight of paper pulp is suitable for a full-frequency loudspeaker; the mica proportion is increased, the graphene proportion is reduced, and the low-frequency loudspeaker can be adapted; on the contrary, the mica proportion is reduced, the graphene proportion is increased, and the high-frequency loudspeaker can be adapted.
After adding the scaly mica and the graphene powder into the paper pulp and uniformly stirring, injecting the formed paper pulp-mica-graphene mixture into a vibrating diaphragm mould for cooling. The diaphragm mold is prepared by two pressure plates in the shape of diaphragms, and after the paper pulp-mica-graphene mixture is fully injected into the diaphragm mold, high pressure is applied to the pressure plates in multiple directions, so that the paper pulp-mica-graphene mixture in the diaphragm mold forms the loudspeaker diaphragm.
Referring to fig. 2, fig. 2 is a schematic cross-sectional view of the loudspeaker diaphragm manufactured by the method of embodiment 2, and it can be seen from fig. 4 that the gaps between the paper pulps 2 are effectively filled with the flaky mica 3 and the graphene powder 4, so that the rigidity and the strength of the loudspeaker diaphragm 1 are improved.
Compared with a loudspeaker diaphragm without mica and graphene, the loudspeaker diaphragm disclosed by the invention is found through sample comparison tests, because the gaps among the paper pulp fibers are effectively filled by the mica and the graphene, the rigidity and the strength of the loudspeaker diaphragm disclosed by the invention are increased by more than one time, and the probability that the cone is adhered to a mould is reduced by more than 80% in the demoulding process of the cone.
In the embodiment of the invention, the scaly mica and the graphene powder are added into the paper pulp for manufacturing the loudspeaker diaphragm, so that the rigidity and the strength of the loudspeaker diaphragm can be effectively enhanced, and the scaly mica is filled in the loudspeaker diaphragm, so that the loudspeaker diaphragm disclosed by the invention can flash and shine, and the identification degree of the loudspeaker diaphragm is improved.
The technical solution of the present invention will be further described by a plurality of examples.
Example 1
Adding 10g of scaly mica and 1g of graphene powder into 100g of paper pulp, and stirring for 30min until the scaly mica, the graphene powder and the paper pulp are uniformly mixed. And injecting the uniformly mixed paper pulp-mica-graphene mixture into a vibrating diaphragm mould for cooling, and applying high pressure to the vibrating diaphragm mould in multiple directions to form the loudspeaker vibrating diaphragm in the vibrating diaphragm mould.
Example 2
Adding 12g of scaly mica and 2g of graphene powder into 100g of paper pulp, and stirring for 30min until the scaly mica, the graphene powder and the paper pulp are uniformly mixed. And injecting the uniformly mixed paper pulp-mica-graphene mixture into a vibrating diaphragm mould for cooling, and applying high pressure to the vibrating diaphragm mould in multiple directions to form the loudspeaker vibrating diaphragm in the vibrating diaphragm mould.
Example 3
Adding 15g of scaly mica and 3g of graphene powder into 100g of paper pulp, and stirring for 30min until the scaly mica, the graphene powder and the paper pulp are uniformly mixed. And injecting the uniformly mixed paper pulp-mica-graphene mixture into a vibrating diaphragm mould for cooling, and applying high pressure to the vibrating diaphragm mould in multiple directions to form the loudspeaker vibrating diaphragm in the vibrating diaphragm mould.
Example 4
Adding 5g of scaly mica and 3g of graphene powder into 100g of paper pulp, and stirring for 30min until the scaly mica, the graphene powder and the paper pulp are uniformly mixed. And injecting the uniformly mixed paper pulp-mica-graphene mixture into a vibrating diaphragm mould for cooling, and applying high pressure to the vibrating diaphragm mould in multiple directions to form the loudspeaker vibrating diaphragm in the vibrating diaphragm mould.
Example 5
Adding 8g of scaly mica and 4g of graphene powder into 100g of paper pulp, and stirring for 30min until the scaly mica, the graphene powder and the paper pulp are uniformly mixed. And injecting the uniformly mixed paper pulp-mica-graphene mixture into a vibrating diaphragm mould for cooling, and applying high pressure to the vibrating diaphragm mould in multiple directions to form the loudspeaker vibrating diaphragm in the vibrating diaphragm mould.
Example 6
Adding 10g of scaly mica and 5g of graphene powder into 100g of paper pulp, and stirring for 30min until the scaly mica, the graphene powder and the paper pulp are uniformly mixed. And injecting the uniformly mixed paper pulp-mica-graphene mixture into a vibrating diaphragm mould for cooling, and applying high pressure to the vibrating diaphragm mould in multiple directions to form the loudspeaker vibrating diaphragm in the vibrating diaphragm mould.
Example 7
Adding 15g of scaly mica and 1g of graphene powder into 100g of paper pulp, and stirring for 30min until the scaly mica, the graphene powder and the paper pulp are uniformly mixed. And injecting the uniformly mixed paper pulp-mica-graphene mixture into a vibrating diaphragm mould for cooling, and applying high pressure to the vibrating diaphragm mould in multiple directions to form the loudspeaker vibrating diaphragm in the vibrating diaphragm mould.
Example 8
Adding 18g of scaly mica and 1.5g of graphene powder into 100g of paper pulp, and stirring for 30min until the scaly mica, the graphene powder and the paper pulp are uniformly mixed. And injecting the uniformly mixed paper pulp-mica-graphene mixture into a vibrating diaphragm mould for cooling, and applying high pressure to the vibrating diaphragm mould in multiple directions to form the loudspeaker vibrating diaphragm in the vibrating diaphragm mould.
Example 9
Adding 20g of scaly mica and 2g of graphene powder into 100g of paper pulp, and stirring for 30min until the scaly mica, the graphene powder and the paper pulp are uniformly mixed. And injecting the uniformly mixed paper pulp-mica-graphene mixture into a vibrating diaphragm mould for cooling, and applying high pressure to the vibrating diaphragm mould in multiple directions to form the loudspeaker vibrating diaphragm in the vibrating diaphragm mould.
In order to clarify a suitable loudspeaker for the loudspeaker diaphragm provided by the present invention, the following verification experiment will be used for explanation.
Referring to fig. 2, a frequency response curve of the loudspeaker diaphragm prepared in embodiment 2 and the loudspeaker diaphragm prepared only with the paper pulp in the prior art is shown, where a curve a is a frequency response curve of the loudspeaker diaphragm prepared only with the paper pulp in the prior art, and a curve B is a frequency response curve of the loudspeaker diaphragm prepared by the method of embodiment 2, and it can be seen from fig. 2 that the curve B is always above the curve a, which illustrates that the loudspeaker diaphragm prepared by the method of embodiment 2 is suitable for a full-band loudspeaker.
In order to clarify that the loudspeaker diaphragms prepared by adding the scaly mica and the graphene powder in different proportions according to the present invention are suitable for loudspeakers, the loudspeaker diaphragms prepared by the methods of examples 2, 4 and 6 were subjected to a frequency response test, the frequency response curve is shown in fig. 3, curve C is the frequency response curve of the loudspeaker diaphragm prepared by the method of example 2, curve D is the frequency response curve of the loudspeaker diaphragm prepared by the method of example 4, curve E is the frequency response curve of the loudspeaker diaphragm prepared by the method of example 4, it can be seen from fig. 2 that in the low frequency part, curve E is the uppermost, in the medium-high frequency part, curve D is the uppermost, and curve C is always at the middle position in the full frequency interval, which illustrates that the loudspeaker diaphragm prepared by the method of example 2 is suitable for full frequency loudspeakers, the speaker diaphragm prepared by the method of example 4 is adapted to a medium-high frequency speaker, and the speaker diaphragm prepared by the method of example 6 is adapted to a medium-high frequency speaker.
In addition, referring to fig. 5, the present invention further provides a loudspeaker diaphragm manufactured by the above preparation method, where the loudspeaker diaphragm 1 includes a central portion, a fixed portion 13, and a ring-folded portion 14 connecting the central portion and the fixed portion 13, the central portion has an open ring-shaped structure, the central portion includes a first vibration portion 11 connected to the ring-folded portion and a second vibration portion 12 connected to one end of the first vibration portion 11 away from the ring-folded portion, a cross section of the first vibration portion 11 along a sound-emitting direction of the loudspeaker diaphragm 1 is linear or arc, and a cross section of the second vibration portion 12 along the sound-emitting direction of the loudspeaker diaphragm 1 is linear, where the arc is preferably exponential.
The bending part 14 includes two long shaft parts and two short shaft parts respectively located at opposite sides, that is, the speaker diaphragm of the present embodiment is a race type or an oval, and is suitable for an electric appliance such as a television. The shape of the cross section of the first vibrating part 11 along the sound emitting direction of the loudspeaker diaphragm 1 is linear or exponential, which is beneficial to high-frequency reproduction and can be suitable for a full-frequency loudspeaker; the scaly mica 3 and the graphene powder 4 are added into the paper pulp 2 for manufacturing the loudspeaker diaphragm, so that the rigidity and the strength of the loudspeaker diaphragm 1 can be effectively enhanced, and the loudspeaker diaphragm 1 disclosed by the invention can flash and emit light because the scaly mica 3 is filled in the loudspeaker diaphragm 1, so that the identification degree of the loudspeaker diaphragm 1 is improved.
The thickness of the loudspeaker diaphragm 1 is 0.2-0.3 mm, and the rigidity and toughness of the loudspeaker diaphragm 1 are ensured while the acoustic performance of the loudspeaker diaphragm 1 is not affected. Wherein, because loudspeaker diaphragm 1 is one shot forming when producing, has improved the E/rho ratio, in order to reduce loudspeaker diaphragm 1's resonant frequency, can make the thickness of dog-ear portion 14 be less than the thickness of central part.
In addition, the present invention further provides a speaker monomer, wherein the speaker diaphragm is disposed on the speaker monomer, and the speaker monomer is disposed on the speaker monomer, so that the speaker monomer has all the beneficial effects of the speaker diaphragm, which is not repeated herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A preparation method of a loudspeaker diaphragm is characterized by comprising the following steps:
adding mica and graphene powder into paper pulp, and uniformly stirring to form a paper pulp-mica-graphene mixture;
and step two, injecting the paper pulp-mica-graphene mixture prepared in the step one into a diaphragm mold for cooling, and pressing the mixture at high pressure to form the loudspeaker diaphragm.
2. The method of preparing a loudspeaker diaphragm of claim 1, wherein the first step includes:
according to the weight parts, 10-15 parts of flaky mica and 1-3 parts of graphene powder are added into 100 parts of paper pulp and uniformly stirred to form a paper pulp-mica-graphene mixture.
3. The method for preparing a loudspeaker diaphragm of claim 1, wherein the first step further comprises:
according to the weight parts, 5-10 parts of flaky mica and 3-5 parts of graphene powder are added into 100 parts of paper pulp and uniformly stirred to form a paper pulp-mica-graphene mixture.
4. The method for preparing a loudspeaker diaphragm of claim 1, wherein the first step further comprises:
according to the weight parts, 15-20 parts of flaky mica and 1-2 parts of graphene powder are added into 100 parts of paper pulp and uniformly stirred to form a paper pulp-mica-graphene mixture.
5. The method for preparing a loudspeaker diaphragm of any one of claims 1 to 4, wherein the mica has a thickness of 90 to 100 μm.
6. The method for preparing a loudspeaker diaphragm of any one of claims 1 to 4, wherein the particle size of the graphene powder is 2000-3000 meshes.
7. A loudspeaker diaphragm produced by the method for producing a loudspeaker diaphragm according to any one of claims 1 to 6, wherein the loudspeaker diaphragm includes a central portion, a fixed portion, and a loop portion connecting the central portion and the fixed portion, the central portion has an open annular structure, the central portion includes a first vibrating portion connected to the loop portion and a second vibrating portion connected to an end of the first vibrating portion away from the loop portion, a cross section of the first vibrating portion in a sound emitting direction of the loudspeaker diaphragm has a linear or arc shape, and a cross section of the second vibrating portion in the sound emitting direction of the loudspeaker diaphragm has a linear shape.
8. The loudspeaker diaphragm of claim 7, wherein the thickness of the loudspeaker diaphragm is 0.2-0.3 mm, and the thickness of the bending portion is smaller than that of the central portion.
9. The loudspeaker diaphragm of claim 8 where the flexure includes two long and two short shaft portions on opposite sides, respectively.
10. A speaker unit, wherein the speaker unit is provided with the loudspeaker diaphragm according to any one of claims 7 to 9.
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| CN107286409A (en) * | 2017-06-22 | 2017-10-24 | 瑞声科技(新加坡)有限公司 | Sound film, the electro-acoustic element of ring and preparation method thereof and application ring |
| CN109266275A (en) * | 2018-09-12 | 2019-01-25 | 苏州赛伍应用技术股份有限公司 | Microspeaker vibrating diaphragm ball high temperature resistant type bonds glue film and top dome module |
| CN109951782A (en) * | 2019-04-17 | 2019-06-28 | 北方工业大学 | Flexible sound production device based on graphene and preparation method and application thereof |
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| CN1134650A (en) * | 1995-04-28 | 1996-10-30 | 许荣初 | Conical resonant membrane for loudspeaker |
| JP3823784B2 (en) * | 2001-09-06 | 2006-09-20 | 富士ゼロックス株式会社 | Nanowire and manufacturing method thereof, and nanonetwork using the same, manufacturing method of nanonetwork, carbon structure, and electronic device |
| CN107170902B (en) * | 2017-05-26 | 2019-04-02 | 深圳市华星光电半导体显示技术有限公司 | The packaging method of packaging film and preparation method thereof and oled panel |
| CN107493557A (en) * | 2017-08-15 | 2017-12-19 | 深圳清华大学研究院 | A kind of diaphragm of loudspeaker preparation method based on graphene paper pulp |
| CN109054059B (en) * | 2018-06-05 | 2022-01-07 | 歌尔股份有限公司 | Preparation method of vibrating diaphragm and vibrating diaphragm |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107286409A (en) * | 2017-06-22 | 2017-10-24 | 瑞声科技(新加坡)有限公司 | Sound film, the electro-acoustic element of ring and preparation method thereof and application ring |
| CN109266275A (en) * | 2018-09-12 | 2019-01-25 | 苏州赛伍应用技术股份有限公司 | Microspeaker vibrating diaphragm ball high temperature resistant type bonds glue film and top dome module |
| CN109951782A (en) * | 2019-04-17 | 2019-06-28 | 北方工业大学 | Flexible sound production device based on graphene and preparation method and application thereof |
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