CN110446143A - The vibrating diaphragm and sounding device of sounding device - Google Patents
The vibrating diaphragm and sounding device of sounding device Download PDFInfo
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- CN110446143A CN110446143A CN201910606306.4A CN201910606306A CN110446143A CN 110446143 A CN110446143 A CN 110446143A CN 201910606306 A CN201910606306 A CN 201910606306A CN 110446143 A CN110446143 A CN 110446143A
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- vibrating diaphragm
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- elastomer
- damping glue
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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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
- H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
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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
- H04R2307/025—Diaphragms comprising polymeric materials
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- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Laminated Bodies (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The invention discloses a kind of vibrating diaphragm of sounding device and sounding devices.The vibrating diaphragm includes at least one layer of elastomer layer and at least one layer of damping glue-line, the elastomer layer and the compound composition vibrating diaphragm of damping glue-line, the damping glue-line is made of pressure sensitive adhesive, in the vibrating diaphragm, the range of surface roughness at least one face in surface that the elastomer layer is contacted with damping glue-line is 0.3~2.0 μm.The vibrating diaphragm of the sounding device has good interfacial adhesion ability and more preferably damping capacity, and sounding device consistency in vibration processes is excellent, and anti-polarization capacity is excellent, and distortion is lower, has higher sound quality.
Description
Technical field
The present invention relates to electroacoustic switch technology fields, vibrating diaphragm and sounding dress more particularly, to a kind of sounding device
It sets.
Background technique
Existing loudspeaker diaphragm materials mostly use the plastic basis material layer (PEEK, PAR, PEI, PI etc.) of high-modulus and softness
Thermoplastic polyurethane elastomer (TPU) and damping glue-line (acrylate glue, silica gel etc.) compound structure.The synthesis of above-mentioned vibrating diaphragm
Performance is poor, be easy to cause Dysacousia.
With the raising that high power, waterproof and high tone quality require, the vibrating diaphragm of other elastomers material (such as TPEE) exists
Loudspeaker field is promoted and applied.
But relative to plastic layers such as PEEK, the surface of elastomeric material can be relatively low, and damping glue-line and elastomer are (such as
TPU, TPEE, TPS etc.) cohesive force it is on the weak side.The problem of will appear layering or even rupture of membranes after Long-term Vibration.Before the prior art is compound
Cohesive force, but table can be improved to a certain extent by being surface-treated (corona, primary coat or plasma etc.) to film layer
Surface treatment has timeliness, more stringent to production requirement, while the production cost increases.
Accordingly, it is desirable to provide a kind of new technical solution, to solve the above technical problems.
Summary of the invention
It is an object of the present invention to provide a kind of vibrating diaphragm of sounding device and sounding devices.
According to the first aspect of the invention, a kind of vibrating diaphragm for sounding device, including at least one layer of elastomer are provided
Layer and at least one layer of damping glue-line, the elastomer layer and damping glue-line are compound to constitute the vibrating diaphragm, and the damping glue-line uses
Pressure sensitive adhesive is made, in the vibrating diaphragm, the surface at least one face in surface that the elastomer layer is contacted with damping glue-line
Roughness range is 0.3~2.0 μm.
Optionally, the modulus of the damping glue-line is 20~2000KPa.
Optionally, the elastomer layer is with a thickness of 5~50 μm.
Optionally, the damping bondline thickness is 2~40 μm.
Optionally, the vibrating diaphragm includes plastic layer, and the plastic layer is compound by lamination complex method with elastomer layer；
And/or the plastic layer and damping glue-line by lamination complex method it is compound.
Optionally, the upper and lower surface of the damping glue-line is respectively provided with elastomer layer；
Alternatively, elastomer layer and plastic layer is respectively set in the upper and lower surface of the damping glue-line.
Optionally, in the vibrating diaphragm, the rough surface on the surface of each elastomer layer contacted with damping glue-line
Spending range is 0.3~2.0 μm.
Optionally, the elastomer layer is made of thermoplastic elastomer (TPE), and the thermoplastic elastomer (TPE) includes copolymerization esters
Thermoplastic elastomer (TPE) (TPC), polyurethane-type thermoplastic elastomer (TPU), polyamide-type thermoplastic elastomer (TPAE), polyphenyl second
Ethylenic thermoplastic elastomer (TPS), polyolefins thermoplastic elastomer (TPO), dynamic perduren/thermoplastic blends
At least one of type thermoplastic elastomer (TPE) (TPV), organic silicon elastomer.
Optionally, the pressure sensitive adhesive that the damping glue-line uses includes pressure-sensitive acrylate, organic silicon pressure sensitive adhesive, gathers
At least one of urethane class pressure sensitive adhesive.
Optionally, the plastic layer uses polyether-ether-ketone (PEEK), polyarylate (PAR), polyetherimide (PEI), polyamides
Imines (PI), polyphenylene sulfide (PPS), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), poly- pair
At least one of benzene dicarboxylic acid butanediol ester (PBT), polysulfones (PSF/PSU) are made.
According to another aspect of the present invention, provide a kind of sounding device, including vibrational system and with the vibrational system
Mutually matched magnetic circuit system, the vibrational system include the vibrating diaphragm of sounding device described above.
The vibrating diaphragm of disclosed one embodiment according to the present invention, sounding device of the invention has good interfacial adhesion energy
Power and more preferably damping capacity, sounding device consistency in vibration processes is excellent, and anti-polarization capacity is excellent, and distortion is lower, has more
High sound quality.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is the cross-sectional view of the diaphragm of loudspeaker according to an embodiment of the invention.
Fig. 2 is HOHD curve of the diaphragm of loudspeaker of 3 kinds of different roughness in table 1 of the present invention under the big voltage tester of 5V
Comparison diagram.
Fig. 3-Fig. 6 is the cross-sectional view of the diaphragm of loudspeaker of different embodiment according to the subject invention.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
The present invention provides a kind of vibrating diaphragm for sounding device, the vibrating diaphragm include the elastomer layer that is combined with each other with
Damp glue-line.It include at least one layer of elastomer layer and at least one layer of damping glue-line in vibrating diaphragm, in the different embodiment party of the present invention
In formula, vibrating diaphragm can be combined by multilayer elastomeric layer and damping glue-line, and the present invention limits not to this.The elasticity
Body layer and the surface roughness at least one face in the surface that contacts of damping glue-line are at 0.3~2.0 μm within the scope of this.
The surface roughness of elastomer layer of the invention is related to technological parameter.It specifically can be for example, by controlling elastomer
The modes such as frictional force of the pressure of technique initialization, tool and elastomer layer surface are controlled layer before shaping.Alternatively, in bullet
Property body layer after formation, it is cold while cooling with the roughness of the release film of elastomer layer phase contrast, elastomer layer by controlling
The physical parameters such as the pressure that but surface roughness of roller and chill roll apply elastomer layer, so that elastomer layer of the invention
Surface roughness be 0.3~2.0 μm.
In order to improve the cohesive force of elastomer layer and glue-line, the scheme of the prior art is: compound preceding by elastomer
Layer be surface-treated (corona, primary coat or plasma etc.), although the scheme of the prior art can improve to a certain extent it is viscous
Tie power, but the mode existing defects handled in the prior art surface.On the one hand, the technique of surface treatment is relative complex,
Production cost extends fabrication cycle.On the other hand, improving the effect of cohesive force, there are timeliness, at one section of products application
Between after, the adhesive property of material weakens, and causes the reliability decrease of product.
The roughness of elastomer layer of the present invention is that (after formation, surface roughness is 0.3 for elastomer layer for its build-in attribute
The attribute itself having in~2.0 μ ms), so that elastomer layer will not because of using overlong time, and with resistance
Phenomena such as being layered between Buddhist nun's glue-line extends the service life of sounding device.The table of the elastomer layer of present invention control simultaneously
Surface roughness in 0.3~2.0 μm of processing technology as the processing technology of production elastomer layer, additional using it
His equipment and/or increase other process flows, the present invention control the technology difficulty of surface roughness compared with the existing technology in
The difficulty of processing that later period handles surface again is lower, not will increase processing cost.
Elastomer layer surface roughness is big, and damping glue-line can have bigger contact area with elastomer layer surface, thus
Increase adhesion strength.But for diaphragm materials, the roughness of diaphragm materials is excessive, will lead to serious open defect, and
The consistency of film surface is poor, and vibrating diaphragm size and strength consistency are poor, easily polarizes so as to cause in vibration processes
The problems such as, influence sound quality.On the contrary, if the roughness of surface of elastomer is too small, i.e., when elastomer layer surface is close to mirror surface, bullet
Property body layer surface and damp glue-line contact area it is small, damping glue-line and elastomer layer cohesive force are weaker, easy in vibration processes
There is lamination problem, to influence sound quality even reliability rupture of membranes etc., while the contact area of elastomer layer and damping glue-line is got over
Small, absorbable vibrational energy is lower in vibration processes, and the damping of composite material is lower.
The inventors discovered that when the roughness on the surface that elastomer layer is used to contact with damping glue-line is 0.3~2.0 μm,
The cohesive force of elastomer layer and damping glue-line significantly improves, and can effectively prevent composite diaphragm from dividing in the application processes such as vibration
The risk of layer, extends the service life of vibrating diaphragm.Meanwhile sounding device audition stability gets a promotion, and vibrating diaphragm is vibrating
Consistency is excellent in the process, and anti-polarization capacity is excellent, and distortion is lower, and loudspeaker has higher sound quality.It is further preferred that elastomer
The roughness on layer and at least one surface of damping glue-line contact surface is 0.5~1.5 μm, when elastomer layer is contacted with damping glue-line
The roughness at least one surface in face is 0.5~1.5 μm, particularly, at least the one of elastomer layer and damping glue-line contact surface
When the roughness on a surface is 1 μm, sounding device diaphragm materials in vibration processes have better damping capacity, in big voltage
When the displacement of lower vibrating diaphragm is larger, damping promotes the amplitude for capableing of stable vibrating diaphragm to a certain extent, reduces vibrating diaphragm and other yuan
Part occurs to wipe a possibility that touching, and improves the sound quality of sounding device.
In different embodiments of the invention, an elastomer layer is possible to only one surface and damping glue-line is viscous
Knot, it is also possible to which the surface of its two sides is bonded with damping glue-line.On the other hand, multilayer elastic may be compounded in a vibrating diaphragm
Body layer and damping glue-line.Basic embodiment of the invention does not accord with the roughness on which surface of which specific elastomer layer
The range for stating roughness is closed, as long as there is one of the elastomer layer roughness for the surface with damping glue-line bonding to accord with
Close above range, it can improve the adhesion strength and structural integrity of vibrating diaphragm to a certain extent.
According to one embodiment of present invention, the modulus of the damping glue-line is 20~2000KPa.Modulus refers to damping glue
Stress and strain the ratio between of the layer under stress.That is, modulus is bigger, the quality for damping glue-line is harder.When the matter of damping glue-line
When ground is harder, it is not easy preferably to merge with the surface of elastomer layer.On the contrary, the modulus such as damping glue-line is smaller, damping
The quality of glue-line is softer.When the quality for damping glue-line is softer, it is easy more preferably to merge with the surface of elastomer layer, damps glue-line energy
In enough smaller spacing and small peak valley gap for preferably entering elastomer layer.In order to guarantee to damp between glue-line and elastomer layer
With good adhesion strength, the inventors discovered that, when the modulus for damping glue-line is 20~2000KPa, damping glue-line is not only
Good cohesive force and damping and amortization can be provided, and moderate strength, composite material combination property are more excellent, it is ensured that compound and molding
The consistency of diaphragm oscillations afterwards.It is further preferred that the modulus of the damping glue-line is 100~1000KPa, when damping glue-line
When modulus is 100~1000KPa, damping glue-line is soft, can preferably merge with the surface of elastomer layer.Moreover, In
It damps glue-line and elastomer layer is laminated compound tense, damping glue-line is not susceptible to spillover, will not make to the appearance of sounding device
At influence.
Meanwhile the inventors discovered that, in the modulus for damping glue-line when 100~1000KPa is within the scope of this, and elasticity
When the roughness at least one surface of body layer and damping glue-line contact surface is 0.5~1.5 μm, damping glue-line and elastomer layer table
The adhesion strength in face does not reduce not only, but also vibrating diaphragm damping is good, and vibrating diaphragm comprehensive performance is more excellent, the dress of sounding made of compacting
The acoustical quality set is good.
Optionally, the elastomer layer is with a thickness of 5~50 μm.The thickness range makes the sensitivity of the diaphragm of loudspeaker more
Height, in the case where applying same driving force, elastomer layer thickness meet the vibrating diaphragm of above range relative to other vibrating diaphragms and
Speech, generation amplitude is bigger, and corresponding speed is higher.Further, make the oscillation space surplus of vibrational system bigger.
Optionally, the damping bondline thickness is 2~40 μm.Damp glue-line cohesive force with the increase of bondline thickness and
Increase.Thickness is too small, then cohesive force is insufficient, can not effectively guarantee the fortune on the upper and lower surface of adhesive layer in vibration processes
Dynamic consistency.Meanwhile the damping for damping glue-line offer can also reduce with the reduction of thickness.On the contrary, if resistance
The thickness of Buddhist nun's glue-line is too big, on the one hand reduces oscillation space surplus；Easily there is excessive glue in the edge of the another aspect diaphragm of loudspeaker
The problems such as, influence process rate.The damping glue-line of the thickness range can take into account enough cohesive forces, excellent damping with
And make vibrational system that there is sufficient oscillation space surplus.
Optionally, the elastomer layer is made of thermoplastic elastomer (TPE), and the thermoplastic elastomer (TPE) is selected from copolymerization esters
Thermoplastic elastomer (TPE) (TPC), polyurethane-type thermoplastic elastomer (TPU), polyamide-type thermoplastic elastomer (TPAE), polyphenyl second
Ethylenic thermoplastic elastomer (TPS), polyolefins thermoplastic elastomer (TPO), dynamic perduren/thermoplastic blends
Type thermoplastic elastomer (TPE) (TPV), organic silicon elastomer it is one or more.
According to one embodiment of present invention, the damping glue-line is made of pressure sensitive adhesive, and the pressure sensitive adhesive is selected from propylene
Esters of gallic acid pressure sensitive adhesive, organic silicon pressure sensitive adhesive, polyurethanes pressure sensitive adhesive it is one or more.
Optionally, the present invention is by taking 3 layers of composite diaphragm as an example, as shown in Figure 1,101 and 103 be polyester elastomer layer, thickness
It is 25 μm, 102 be damping glue-line, with a thickness of 20 μm.The surface A is on polyester elastomer layer 101 for contacting with damping glue-line 102
Surface, B surface is to be used on polyester elastomer layer 103 and the surface that contacts of damping glue-line 102.In embodiments of the present invention
In, the surface roughness of the surface A and/or B surface is at 0.3~2.0 μm within the scope of this.
For institute's energy bring technical effect of the invention, the present invention is by taking 3 layers of composite diaphragm structure as an example, using identical material
The diaphragm materials of formula prepare 3 kinds of composite diaphragms, including the 1st kind of composite diaphragm, the 2nd kind of composite diaphragm, the 3rd kind of composite diaphragm.
Wherein the 1st kind of composite diaphragm is that composite diaphragm is comparative example 2 in comparative example the 1, the 2nd, and the 3rd kind of composite diaphragm is one kind of the invention
Embodiment.
The surface A of 1st kind of composite diaphragm and the surface roughness of B surface are set as 0.2 μm, and surface roughness is not in this hair
Within the scope of bright setting, less than 0.3 μm of minimum value of the surface roughness that the present invention is arranged.
The surface A of 2nd kind of composite diaphragm and the surface roughness of B surface are set as 2.1 μm, and surface roughness is not in this hair
Within the scope of bright setting, greater than 2.0 μm of maximum value of the surface roughness that the present invention is arranged.
The surface A of composite diaphragm and the surface roughness of B surface are set as 1.0 μm in 3rd, 1.0 μm of surface roughness categories
0.3 μm~2.0 μm of range be arranged in the present invention.
1st kind of composite diaphragm, the 2nd kind of composite diaphragm, the surface A of the 3rd kind of composite diaphragm and B surface setting rough surface
Degree is different, and the influence to sounding device is as shown in table 1 and attached drawing 2:
Table 1: surface roughness and the product peeling force table of comparisons
| A/B surface roughness Ra/μm | Peeling force (g/25mm) | |
| Comparative example 1 | 0.2 | 350 |
| Comparative example 2 | 2.1 | 470 |
| The embodiment of the present invention | 1.0 | 465 |
The compacting of vibrating diaphragm is carried out using composite diaphragm material described in comparative example 1, comparative example 2 and the embodiment of the present invention, so
After be assembled into sounding device carry out acoustical behavior test.
As shown in table 1, with the increase of surface roughness, elastomer layer and the cohesive force for damping glue-line have it is increased become
Gesture.The increase of cohesive force, can effectively prevent the risk that multilayer materials are layered in vibration processes, and audition stability obtains
To promotion.
As shown in Fig. 2, pecked line indicates that the high-order harmonic wave distortion measurement curve of comparative examples 1, abscissa indicate frequency
(Hz), ordinate indicates high-order harmonic wave distortion HOHD (%)；Solid line indicates that the high-order harmonic wave distortion measurement of the embodiment of the present invention is bent
Line, abscissa indicate frequency (Hz), and ordinate indicates high-order harmonic wave distortion HOHD (%)；Line dotted line indicates that comparative examples 2 are high
Order harmonics distortion measurement curve, abscissa indicate that frequency (Hz) ordinate indicates high-order harmonic wave distortion HOHD (%).
When high-order harmonic wave is distorted the severity polarized when the severity and diaphragm oscillations of HOHD and diaphragm oscillations
Related with the severity that other elements generation wiping is touched, specifically, the surface roughness of the elastic element of vibrating diaphragm is bigger, elastomer
The consistency of thickness of layer is deteriorated, and the consistency of compound rear diaphragm materials is also deteriorated, and causes vibrating diaphragm easily to occur in vibration processes inclined
Vibration, position shift degree it is big when with other elements occur wiping touch phenomena such as increase, high-order harmonic wave is easy to happen distortion.
Fig. 2 show the HOHD curve under the big voltage tester of 5V, it can be found that implementing relative to comparative examples 1 and control
The HOHD curve of example 2, the embodiment of the present invention is relatively lower.
Relative to comparative example 1, the increase of elastomer layer surface roughness of the embodiment of the present invention is so that elastomer layer and resistance
The contact area of Buddhist nun's glue-line increases, and the diaphragm materials of the embodiment of the present invention have better damping capacity in vibration processes, big
The displacement of vibrating diaphragm is larger under voltage, and the promotion of damping can reduce the amplitude of vibrating diaphragm, reduces to wipe and touch, HOHD curve is lower.
Although the elastomer layer of comparative example 2 has higher roughness, the consistency of thickness of elastomer layer is deteriorated, compound
The consistency of diaphragm materials is also deteriorated afterwards, easily polarizes so as to cause in vibration processes, cause to wipe under big displacement touch etc. it is existing
As increasing, HOHD curve is increased.
In one example, damping and amortization and caking property needed for damping glue-line provides the diaphragm of loudspeaker.Damping glue-line can
Directly to be carried out with elastomer layer together with lamination compoiste adhering, to form two layer composite structure.This makes the diaphragm of loudspeaker
Production it is very easy.Wherein the surface roughness of elastomer layer and damping glue-line contact surface is set as 0.3~2.0 μm.
In an optional embodiment, as shown in figure 3, the vibrating diaphragm of the sounding device be three-decker, from up to
Under successively include elastomer layer 301, damp glue-line 302, elastomer layer or plastic layer 303.
When elastomer layer is arranged simultaneously in the upper and lower surface for damping glue-line 302, the elastomer layer 301 is used for and damping
The surface that glue-line 302 contacts is the surface A, and the surface for contacting with damping glue-line 302 of elastomer layer 303 is B surface, preferably
The surface roughness on ground, the surface A and at least one surface of B surface is 0.3~2.0 μm.Optionally, the surface on the surface A and B surface
Roughness is 0.3~2.0 μm.Wherein " upper and lower surface " is respectively the surface contacted with elastomer layer in this implementation.
Preferably, elastomer layer 301 is identical as the thickness of elastomer layer or plastic layer 303, this makes the diaphragm of loudspeaker
Homogeneity is good, and is not easy curling, fold.
As shown in figure 3, the material of elastomer layer 301 and elastomer layer 303 can be identical or different.When elastomer layer 301
When identical as 303 material of elastomer layer, elastomer layer 301 is identical as the Young's modulus of elastomer layer 303, elastomer layer 301 with
The vibration consistency of elastomer layer 303 is more preferable.When elastomer layer 301 and 303 material of elastomer layer be not identical, elastomer layer
301 can exist with the Young's modulus of elastomer layer 303 it is not identical, in such a case, it is possible to be adjusted by adjusting Young's modulus
With the complexity that the vibrating diaphragm vibrates above and below, so that the vibration performance of vibrating diaphragm can satisfy the special vibratility of sounding device
It can demand application requirement.
In another optional embodiment, as shown in figure 4, the diaphragm of loudspeaker is four-layer structure, from top to bottom
It successively include plastic layer 401, elastomer layer 402 damps glue-line 403, elastomer layer or plastic layer 404.
When elastomer layer is arranged simultaneously in the upper and lower surface for damping glue-line 403, elastomer layer 402 is used for and damping glue-line
The surface of 403 contacts is the surface A, and the surface for contacting with damping glue-line 403 of elastomer layer 404 is B surface, it is preferable that A
The surface roughness on surface and at least one surface of B surface is 0.3~2.0 μm.Optionally, the rough surface on the surface A and B surface
Degree is 0.3~2.0 μm.
When damp glue-line 403 upper and lower surface elastomer layer and plastic layer is respectively set when, elastomer layer 402 for
Damping the surface that glue-line 403 contacts is the surface A, and the surface roughness on the surface A is 0.3~2.0 μm.In this example " upper and lower surface "
For the surface contacted respectively with elastomer layer and the surface contacted with plastic layer.Modeling can be set in the lower surface of damping glue-line 403
The bed of material.
The plastic layer 401 is combined with each other with elastomer layer 402 by being laminated complex method, specifically, is not being used
In the case of binder, by heating or pressuring method by plastic layer 401 and elastomer layer 402 it is compound or use binder.Make
When with binder situation, the binder is coated onto the lower surface of plastics glue-line 401 and/or the upper surface of elastomer layer 402,
Middle binder can be laid on the whole surface of material or be set as the local surfaces that discrete point is coated onto material.Wherein plastic layer
401 lower surface and the upper surface of elastomer layer 402 are two surfaces to contact with each other.
In another optional embodiment, as shown in figure 5, the diaphragm of loudspeaker is five-layer structure, from top to bottom
Successively include plastic layer 501, damp glue-line 502, elastomer layer 503 damps glue-line 504, elastomer layer or plastic layer 505.
The damping glue-line 502 can be identical or not identical with the material for damping glue-line 504.
In one example, the surface for contacting with damping glue-line 502 of the elastomer layer 503 is the surface A, elasticity
The surface for contacting with damping glue-line 504 of body layer 503 is B surface, and elastomer layer 505 is used to connect with damping glue-line 504
The surface of touching is C Surface.Optionally, the surface A, B surface, at least one surface of C Surface surface roughness be set as 0.3~
2.0μm.Optionally, the surface A and the surface roughness at least one surface in B surface are set as 0.3~2.0 μm, also, C table
The surface roughness in face is set as 0.3~2.0 μm；Optionally, the surface A.The surface roughness of B surface and C Surface is disposed as
0.3~2.0 μm.
In one example, the surface for contacting with damping glue-line 502 of the elastomer layer 503 is the surface A, elasticity
The surface for contacting with damping glue-line 504 of body layer 503 is B surface.Optionally, the surface A and at least one surface in B surface
Surface roughness be set as 0.3~2.0 μm；Optionally, the surface roughness of the surface A and B surface is set as 0.3~2.0 μm.
Plastic layer is arranged in the lower surface for damping glue-line 504.
It in one example, from top to bottom successively include plastics as shown in fig. 6, the diaphragm of loudspeaker is five-layer structure
Layer 601, elastomer layer 602 damp glue-line 603, elastomer layer 604, plastic layer 605.
The surface for contacting with damping glue-line 603 of the elastomer layer 602 is the surface A, and elastomer layer 604 is used for
The surface contacted with damping glue-line 603 is B surface.Optionally, the surface roughness on the surface A and at least one surface in B surface
It is set as 0.3~2.0 μm.Optionally, the surface roughness of the surface A and B surface is set as 0.3~2.0 μm.
In this example, elastomer layer is uniformly distributed in damping glue-line two sides, and vibrating diaphragm is more excellent in terms of resilience in the structure,
But damping and amortization slightly reduces, and can improve the damping and amortization of structure and/or in plastic layer by increasing the certain thickness of damping glue-line
It is laminated compound tense with elastomer layer, in the discrete setting of plastic layer and elastomer layer there is the viscous glutinous agent of damping to improve structure
Damping and amortization.
According to one embodiment of present invention, a kind of sounding device is provided.The sounding device include vibrational system and with vibration
The dynamic mutually matched magnetic circuit system of system.Vibrational system includes the diaphragm of loudspeaker provided by the invention.For example, vibrating diaphragm is ring vibration
Film or plate diaphragm.The characteristics of loudspeaker has sounding effect good, good tolerance.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (11)
1. a kind of vibrating diaphragm of sounding device, which is characterized in that including at least one layer of elastomer layer and at least one layer of damping glue-line, institute
Elastomer layer and the compound composition vibrating diaphragm of damping glue-line are stated, the damping glue-line is made of pressure sensitive adhesive, in the vibrating diaphragm,
The range of surface roughness at least one face in surface that the elastomer layer is contacted with damping glue-line is 0.3~2.0 μm.
2. vibrating diaphragm according to claim 1, which is characterized in that the modulus of the damping glue-line is 20~2000KPa.
3. vibrating diaphragm according to claim 1, which is characterized in that the elastomer layer is with a thickness of 5~50 μm.
4. vibrating diaphragm according to claim 1, which is characterized in that the damping bondline thickness is 2~40 μm.
5. vibrating diaphragm according to claim 1, which is characterized in that the vibrating diaphragm includes plastic layer, the plastic layer and elasticity
Body layer is compound by lamination complex method；
And/or the plastic layer and damping glue-line by lamination complex method it is compound.
6. vibrating diaphragm according to claim 5, which is characterized in that the upper and lower surface of the damping glue-line is respectively provided with elastomer
Layer；
Alternatively, elastomer layer and plastic layer is respectively set in the upper and lower surface of the damping glue-line.
7. according to claim 1-6 it is one of any described in vibrating diaphragm, which is characterized in that in the vibrating diaphragm, each elasticity
The range of surface roughness on the surface of body layer contacted with damping glue-line is 0.3~2.0 μm.
8. vibrating diaphragm according to claim 1, which is characterized in that the elastomer layer is made of thermoplastic elastomer (TPE), institute
Stating thermoplastic elastomer (TPE) includes copolyesters analog thermoplastic elastomer (TPC), polyurethane-type thermoplastic elastomer (TPU), polyamide
Analog thermoplastic elastomer (TPAE), polyolefins thermoplastic elastomer (TPO), moves polystyrene-type thermoplastic elastomers (TPS)
At least one of state vulcanized rubber/thermoplastic blends type thermoplastic elastomer (TPE) (TPV), organic silicon elastomer.
9. vibrating diaphragm according to claim 1, which is characterized in that the pressure sensitive adhesive that the damping glue-line uses includes acrylate
At least one of class pressure sensitive adhesive, organic silicon pressure sensitive adhesive, polyurethanes pressure sensitive adhesive.
10. vibrating diaphragm according to claim 5, which is characterized in that the plastic layer uses polyether-ether-ketone (PEEK), polyarylate
(PAR), polyetherimide (PEI), polyimides (PI), polyphenylene sulfide (PPS), polyethylene naphthalate (PEN), poly- pair
At least one of ethylene terephthalate (PET), polybutylene terephthalate (PBT) (PBT), polysulfones (PSF/PSU) system
At.
11. a kind of sounding device, which is characterized in that including vibrational system and with the mutually matched magnetic circuit system of the vibrational system
System, the vibrational system includes the vibrating diaphragm of the sounding device as described in any one in claim 1-10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910606306.4A CN110446143B (en) | 2019-07-05 | 2019-07-05 | Sound generating device's vibrating diaphragm and sound generating device |
| PCT/CN2020/099446 WO2021004340A1 (en) | 2019-07-05 | 2020-06-30 | Diaphragm of sound emission device, and sound emission device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910606306.4A CN110446143B (en) | 2019-07-05 | 2019-07-05 | Sound generating device's vibrating diaphragm and sound generating device |
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| CN110446143A true CN110446143A (en) | 2019-11-12 |
| CN110446143B CN110446143B (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910606306.4A Active CN110446143B (en) | 2019-07-05 | 2019-07-05 | Sound generating device's vibrating diaphragm and sound generating device |
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| CN (1) | CN110446143B (en) |
| WO (1) | WO2021004340A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021004340A1 (en) * | 2019-07-05 | 2021-01-14 | 歌尔股份有限公司 | Diaphragm of sound emission device, and sound emission device |
| WO2021208470A1 (en) * | 2020-04-17 | 2021-10-21 | 歌尔股份有限公司 | Diaphragm and sound producing device |
| WO2021250634A1 (en) * | 2020-06-12 | 2021-12-16 | 3M Innovative Properties Company | Damping adhesive film for screen sounding technology and electronic device comprising same |
| WO2022000776A1 (en) * | 2020-06-30 | 2022-01-06 | 瑞声声学科技(深圳)有限公司 | Diaphragm and sound-producing device |
| WO2022257782A1 (en) * | 2021-06-09 | 2022-12-15 | 歌尔股份有限公司 | Vibrating diaphragm for loudspeaker, preparation method for vibrating diaphragm for loudspeaker, and sound generating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114025288B (en) * | 2021-10-27 | 2024-01-16 | 惠州市众瑞声电子有限公司 | Anti-distortion high-tone-quality sound vibrating diaphragm |
| CN114286261A (en) * | 2021-12-30 | 2022-04-05 | 歌尔股份有限公司 | Vibrating diaphragm and preparation method thereof, sound production device and electronic equipment |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110446143B (en) | 2021-03-09 |
| WO2021004340A1 (en) | 2021-01-14 |
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