CN206620278U - A kind of vibrating diaphragm and the electroacoustic transducer including the vibrating diaphragm - Google Patents
A kind of vibrating diaphragm and the electroacoustic transducer including the vibrating diaphragm Download PDFInfo
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- CN206620278U CN206620278U CN201620832000.2U CN201620832000U CN206620278U CN 206620278 U CN206620278 U CN 206620278U CN 201620832000 U CN201620832000 U CN 201620832000U CN 206620278 U CN206620278 U CN 206620278U
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- vibrating diaphragm
- electroacoustic transducer
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Abstract
The utility model is related to a kind of vibrating diaphragm and the electroacoustic transducer including the vibrating diaphragm, vibrating diaphragm includes basal layer, and it is the film being made with any one material in PEI, polyethylene terephthalate, polyether-ether-ketone, polyphenylene sulfide, polyurethanes；Strengthening layer, it is the mixture being mixed to form with graphene, graphite powder and glue and the strengthening layer formed through dry solidification；Strengthening layer is attached to basal layer.Vibrating diaphragm adhesiveness of the present utility model is high, reduces resonant frequency, adds high frequency acoustic pressure, improve low-and high-frequency characteristic, uses the electroacoustic transducer resonant frequency f of the vibrating diaphragm0Low, high frequency acoustic pressure is high, and low-and high-frequency performance is more preferable.
Description
Technical field
The utility model is related to the technical field of acoustics, more specifically to a kind of vibrating diaphragm and the electricity including the vibrating diaphragm
Sonic transducer.
Background technology
With the fast development of science and technology, people are to the quality requirement more and more higher of electronic product, such as earphone, sound
The tonequality of the products such as sound requires more and more higher, such as minimizes, is thinned, high tone quality is required, and these effects are depending on acoustics
The core component of device, the core component of acoustical device is exactly its vibrating diaphragm.
In existing correlation technique, in order to obtain the vibrating diaphragm of high tone quality, generally realized by changing the material of vibrating diaphragm.
Common diaphragm materials have cone, plastics, metal etc., usual cone vibrating diaphragm acoustic feature for smooth-going naturally, lucid and lively clear, but its
Easily affected by environment, performance is unstable.Metal vibration diaphragm rigidity is very strong, but the strong another side of rigidity is that interior damage is low, and energy is not
It can in itself be absorbed by vibrating diaphragm material, therefore when occurring basin division, have apparent formant and appear in frequency response
It is high-end, it is easy to occur " metallic sound ".In addition, metal material can increase the weight of vibrating diaphragm, it is unfavorable for the thin lightization development of vibrating diaphragm.
The vibrating diaphragm of plastic material is rigidly not so good, and quality is also poor, and uses the vibrating diaphragm with graphene, can improve the rigidity of vibrating diaphragm,
But existing graphene vibrating diaphragm is generally formed at substrate surface by the way of spraying, due to the rigidity characteristics of graphene, makes
Diaphragm when by external force, be easily broken off, thus easily come off from the surface of base material, low-and high-frequency performance it is not good enough.
Utility model content
The technical problems to be solved in the utility model is, for the above-mentioned when diaphragm is by external force of prior art, stone
Black alkene is easily broken off, easily come off from the surface of base material and the imperfect defect of low-and high-frequency performance there is provided a kind of vibrating diaphragm and bag
Include the electroacoustic transducer of the vibrating diaphragm.
The utility model solves the technical scheme that its technical problem used：A kind of vibrating diaphragm is constructed, the vibrating diaphragm includes：
Basal layer, the basal layer is with PEI, polyethylene terephthalate, polyether-ether-ketone, polyphenylene sulfide
The film that any one material in ether, polyurethanes is made；
Strengthening layer, the strengthening layer is the mixture that is mixed to form with graphene, graphite powder and glue and through dry solidification
The strengthening layer of formation；
The strengthening layer is attached to the basic layer surface.
In the vibrating diaphragm, the thickness of preferably described vibrating diaphragm strengthening layer is 2 μm.
A kind of electroacoustic transducer, the vibration system that the electroacoustic transducer includes magnetic circuit system, is connected with the magnetic circuit system
System, wherein, drive device of the vibrational system including above-mentioned vibrating diaphragm and the driving vibrating diaphragm.
In the electroacoustic transducer, preferably described magnetic circuit system is moving-iron type magnetic circuit system.
In the electroacoustic transducer, preferably described moving-iron type magnetic circuit system includes outer magnetic conductive board, magnet, armature, rotary shaft
And coil.
In the electroacoustic transducer, preferably described coil is provided with two, and is symmetrically distributed in the both sides of rotary shaft, institute
Two coils stated are connected, and rotation direction is identical.
In the electroacoustic transducer, preferably described magnetic circuit system is moving-coil type magnetic circuit system.
In the electroacoustic transducer, preferably described moving-coil type magnetic circuit system includes magnetic conduction heel piece, magnet and iron core.
In the electroacoustic transducer, preferably described drive device is voice coil loudspeaker voice coil.
In the electroacoustic transducer, preferably described voice coil loudspeaker voice coil is arranged on the lower section of the vibrating diaphragm.
Implement vibrating diaphragm of the present utility model and the electroacoustic transducer including the vibrating diaphragm, have the advantages that：This practicality
New vibrating diaphragm is to include basal layer and strengthening layer double-layer structure, and strengthening layer is coated in basic layer surface, and the basal layer is
With any one in PEI, polyethylene terephthalate, polyether-ether-ketone, polyphenylene sulfide, polyurethanes
The film that material is made, strengthening layer is the mixture being mixed to form with graphene, graphite powder and glue and formed through dry solidification
Strengthening layer.Graphite powder, graphene and the glue of use are coated with that, in basic layer surface, graphene uniform can be made after being sufficiently mixed
It is solidificated in colloid, basic layer surface can be sticked to by the adhesive force of colloid, the adhesiveness of graphene is improved, while can
Make graphene not easy to break, it is not easy to be come off from basic layer surface, it is achieved thereby that while the adhesiveness of vibrating diaphragm is improved, drop
The low resonant frequency f of vibrating diaphragm0, add high frequency acoustic pressure, perfect low-and high-frequency characteristic.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing：
Fig. 1 is the vibrating diaphragm cross section structure schematic diagram of the utility model embodiment；
Fig. 2 is frequency response curve of the vibrating diaphragm with common vibrating diaphragm of the utility model embodiment；
Fig. 3 is the impedance plot of the vibrating diaphragm and the loudspeaker of common vibrating diaphragm assembling of the utility model embodiment；
Fig. 4 is the module map of the electroacoustic transducer of the utility model embodiment.
Embodiment
In order to be more clearly understood to technical characteristic of the present utility model, purpose and effect, accompanying drawing is now compareed detailed
Illustrate embodiment of the present utility model.
As shown in figure 1, the utility model provides a kind of vibrating diaphragm, the vibrating diaphragm includes basal layer 101, on the surface of basal layer 101
It is attached with strengthening layer 102.Basal layer 101 is with PEI, polyethylene terephthalate, polyether-ether-ketone, polyphenylene sulfide
The film that any one material in ether, polyurethanes is made.Preferably, basal layer 101 selects poly terephthalic acid second
The film that naphthalate material is made, i.e., preferred PET (polyethylene terephthalate) films as vibrating diaphragm base material.
Strengthening layer 102 is that the mixture formed after graphene, graphite powder and glue uniformly mixing is formed through dry solidification
Strengthening layer.
In the strengthening layer 102, glue is used for dispersed graphite alkene；In the utility model, as long as disperseing stone
The glue of black alkene is all suitable for the utility model, glue is not limited, and glue can be polyurethane, PVF, polypropylene
Any one in acid esters emulsion, vinylacetate, ethylene-vinyl acetate.It is preferred that polyurethane.
It is to be appreciated that in the utility model, graphite powder is added in strengthening layer 102, due to graphite powder heat dispersion ratio
Preferably, and diaphragm can produce very high heat in vibrations, therefore adding graphite powder contributes to diaphragm to radiate, when by diaphragm application
When the acoustical devices such as loudspeaker, the ability to bear of loudspeaker can be improved.Graphene has the rigid characteristic of single atom, therefore,
Graphene is rigidly strong, and overall performance is good, and graphene is added in strengthening layer 102 can change the characteristic of vibrating diaphragm, reach vibrating diaphragm
The high frequency performance of metal is plated, while preferably low frequency performance is can reach again, so as to improve the whole structure of vibrating diaphragm.Preferably, by force
The thickness for changing layer 102 is 1.5~3.5 μm, more preferably 2 μm.
As shown in figure 4, the utility model also provides a kind of electroacoustic transducer, the electroacoustic transducer include magnetic circuit system 100,
The vibrational system 200 being connected with magnetic circuit system 100.
Magnetic circuit system 100 includes moving-iron type magnetic circuit system or moving-coil type magnetic circuit system.
Specifically, moving-iron type magnetic circuit system includes magnetic conductive board, magnet, armature, rotary shaft and coil.Its coil is provided with
Two, two coils are symmetrically distributed in the both sides of rotary shaft and two coils are connected, while the rotation direction of two coils is identical.
In implementation of the present utility model, coil is set to two induced field intensity that can effectively ensure that armature two ends identical, and then
Harmonic distortion can be reduced.
Moving-coil type magnetic circuit system includes magnetic conduction heel piece, magnet and iron core.
In embodiment of the present utility model, vibrational system 200 includes the drive device of vibrating diaphragm and the driving vibrating diaphragm.
Vibrating diaphragm is that the vibrating diaphragm in vibrating diaphragm described above, i.e. the present embodiment includes basal layer 101, on the surface of basal layer 101
It is attached with strengthening layer 102.Basal layer 101 is with PEI, polyethylene terephthalate, polyether-ether-ketone, polyphenylene sulfide
The film that any one material in ether, polyurethanes is made.Preferably, basal layer 101 selects poly terephthalic acid second
The film that naphthalate material is made, i.e., preferred PET (polyethylene terephthalate) films as vibrating diaphragm base material.
Strengthening layer 102 is that the mixture formed after graphene, graphite powder and glue uniformly mixing is formed through dry solidification
Strengthening layer.
In the strengthening layer 102, glue is used for dispersed graphite alkene；In the utility model, as long as disperseing stone
The glue of black alkene is all suitable for the utility model, glue is not limited, and glue can be polyurethane, PVF, polypropylene
Any one in acid esters emulsion, vinylacetate, ethylene-vinyl acetate.
In electroacoustic transducer disclosed in the utility model, drive device is preferably voice coil loudspeaker voice coil, and voice coil loudspeaker voice coil is arranged under vibrating diaphragm
Side.Grapheme material is used in embodiment of the present utility model, using the excellent heat conductivity performance of grapheme material, voice coil loudspeaker voice coil is produced
Raw heat Quick diffusing is gone out, and prevents the heat at voice coil loudspeaker voice coil from assembling and causing damaged voice coil, improves dissipating for electroacoustic transducer
Thermal effect, and then extend the service life of electroacoustic transducer；And voice coil loudspeaker voice coil is made using graphene, graphene is taken full advantage of
The characteristics of material conductivity is good, not only increases the intensity of voice coil loudspeaker voice coil, has further reduced the energy consumption of transducer.Simultaneously because this
The vibrating diaphragm of utility model, its adhesiveness is high, and can reduce resonant frequency, increase high frequency acoustic pressure, improve low-and high-frequency characteristic.Therefore,
Use the electroacoustic transducer resonant frequency f of the vibrating diaphragm0Low, high frequency acoustic pressure is high, and low-and high-frequency performance is more preferable.
In addition, the vibrating diaphragm that the utility model is provided is rigidly good, adhesiveness is high, and low-and high-frequency performance more preferably, is applicable to raise one's voice
In the acoustic equipments such as device, receiver.
The conventional horn assembled using existing vibrating diaphragm is contrasted with the loudspeaker that vibrating diaphragm of the present utility model is assembled, and is carried out following
Performance test：
Vibrating diaphragm low-and high-frequency performance test
Evaluate frequency response of the vibrating diaphragm in embodiment in vibration processes, the low-and high-frequency performance for reflecting vibrating diaphragm.Comment
Valency method：The vibrating diaphragm of preparation is shaped into horn diaphragm, and is assembled into finished product (be referred to as graphite powder-graphene loudspeaker, hereafter together
This), itself and common loudspeaker are subjected to acoustical behavior test, specific method of testing is to be tested using the acoustical behavior of standard
Instrument, graphite powder-graphene loudspeaker are tested simultaneously with conventional horn, and the testing time is 10 minutes, and is counted accordingly
According to record, its frequency response curve is as shown in Figure 2.
Understood according to the data of record and frequency response curve (such as Fig. 2), the higher frequency response of graphene loudspeaker is bent
Line is than high 2~4dB (high band is 3000~40000Hz) of conventional horn, and its Frequency response curve is than conventional horn
High 3~6dB (low-frequency range is 20~50Hz).
As shown in figure 3, being the impedance plot of graphene loudspeaker and conventional horn, it can be seen directly that in figure：Graphite
The low-frequency resonant frequency f of powder-graphene loudspeaker0Low 150Hz than conventional horn or so.
Summary experimental result, directly illustrates vibrating diaphragm low-and high-frequency performance of the present utility model more preferably, rigidity is strong, and by
In graphite powder, graphene are Direct Uniform incorporation glue, make its adhesiveness higher, it is difficult for drop-off.
Above example is only to illustrate technical concepts and features of the present utility model, and its object is to allow be familiar with technique
Personage can understand content of the present utility model and implement accordingly, protection domain of the present utility model can not be limited.It is all with
The equivalent changes and modifications that the utility model right is done, all should belong to the utility model claim covers model
Enclose.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of the utility model appended claims.
Claims (10)
1. a kind of vibrating diaphragm, it is characterised in that the vibrating diaphragm includes：
Basal layer, the basal layer is with PEI, polyethylene terephthalate, polyether-ether-ketone, polyphenylene sulfide, poly-
The film that any one material in carbamate is made；
Strengthening layer, the strengthening layer is graphene layer；
The strengthening layer is attached to the basic layer surface.
2. vibrating diaphragm according to claim 1, it is characterised in that the thickness of the vibrating diaphragm strengthening layer is 2 μm.
3. a kind of electroacoustic transducer, it is characterised in that the vibrational system being connected including magnetic circuit system, with the magnetic circuit system, its
In, the vibrational system includes the drive device of the vibrating diaphragm and the driving vibrating diaphragm described in any one of claim 1 to 2.
4. electroacoustic transducer according to claim 3, it is characterised in that the magnetic circuit system is moving-iron type magnetic circuit system.
5. electroacoustic transducer according to claim 4, it is characterised in that the moving-iron type magnetic circuit system includes outer magnetic conduction
Plate, magnet, armature, rotary shaft and coil.
6. electroacoustic transducer according to claim 5, it is characterised in that described coil is provided with two, and symmetrical
In the both sides of rotary shaft, two described coils are connected, and rotation direction is identical.
7. electroacoustic transducer according to claim 3, it is characterised in that the magnetic circuit system is moving-coil type magnetic circuit system.
8. electroacoustic transducer according to claim 7, it is characterised in that the moving-coil type magnetic circuit system includes conductive magnetic yoke
Iron, magnet and iron core.
9. electroacoustic transducer according to claim 3, it is characterised in that the drive device is voice coil loudspeaker voice coil.
10. electroacoustic transducer according to claim 9, it is characterised in that the voice coil loudspeaker voice coil is arranged on the lower section of the vibrating diaphragm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620832000.2U CN206620278U (en) | 2016-08-02 | 2016-08-02 | A kind of vibrating diaphragm and the electroacoustic transducer including the vibrating diaphragm |
| PCT/CN2016/096777 WO2018023842A1 (en) | 2016-08-02 | 2016-08-25 | Vibration diaphragm and manufacturing method thereof, and electroacoustic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620832000.2U CN206620278U (en) | 2016-08-02 | 2016-08-02 | A kind of vibrating diaphragm and the electroacoustic transducer including the vibrating diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206620278U true CN206620278U (en) | 2017-11-07 |
Family
ID=60228647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620832000.2U Active CN206620278U (en) | 2016-08-02 | 2016-08-02 | A kind of vibrating diaphragm and the electroacoustic transducer including the vibrating diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206620278U (en) |
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2016
- 2016-08-02 CN CN201620832000.2U patent/CN206620278U/en active Active
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