CN207200959U - A kind of sound-producing device, module and electronic equipment - Google Patents
A kind of sound-producing device, module and electronic equipment Download PDFInfo
- Publication number
- CN207200959U CN207200959U CN201720832154.6U CN201720832154U CN207200959U CN 207200959 U CN207200959 U CN 207200959U CN 201720832154 U CN201720832154 U CN 201720832154U CN 207200959 U CN207200959 U CN 207200959U
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- sound
- polypropylene film
- producing device
- metal electrode
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Abstract
The utility model discloses a kind of sound-producing device, module and electronic equipment.The sound-producing device includes：Polypropylene film, the inside of the polypropylene film has the high intensity hole of numerous flat, described hole is in cellular arrangement inside the polypropylene film, and the polypropylene film is configured as carrying out charging polarization under strong electric field environment to form permanent positive and negative charge in described hole；The metal electrode layer being respectively arranged in the polypropylene film both side surface, the polypropylene film is configured as can be of reciprocating vibration in the thickness direction thereof when the metal electrode layer connects the voltage signal of change.A problem to be solved in the utility model is that the miniature sound-producing device of existing moving-coil type stills need magnetic circuit system as driving source so as to cause volume larger.
Description
Technical field
The utility model electroacoustic techniques field, more specifically, the utility model is related to a kind of sound-producing device, module and electricity
Sub- equipment.
Background technology
The miniature sound-producing device of moving-coil type is had been widely used in consumer electronics product.For example, smart mobile phone or flat
Loudspeaker or receiver in the electronic equipments such as plate computer etc..
The miniature sound-producing device of moving-coil type includes magnetic circuit system and vibrational system, and vibrational system includes the voice coil loudspeaker voice coil being fixed together
And vibrating diaphragm.Magnetic circuit system can produce magnetic gap as drive force source.Be connected with the voice coil loudspeaker voice coil of signal by Lorentz force action band
Dynamic vibrating diaphragm vibrates together, so as to radiative acoustic wave.
The technical maturity of the miniature sound-producing device of moving-coil type, relatively warm sound can be obtained.But it needs magnetic circuit system to make
For driving source, so there is still a need for occupying certain volume.
The thickness more and more thinner of the electronic equipments such as now smart mobile phone, keeps for the space of loudspeaker or receiver also to get over
Come smaller.The physical vibration space of product is so necessarily caused further to reduce, so as to finally influence the miniature sounding dress of moving-coil type
Put the maximum voice output in low-frequency range.
Therefore, it is necessary to existing miniature sound-producing device is improved.
Utility model content
A purpose of the present utility model is to provide the new solution of a kind of sound-producing device, module and electronic equipment.
According to first aspect of the present utility model, there is provided a kind of sound-producing device.The sound-producing device includes：Polypropylene is thin
Film, the inside of the polypropylene film have the high intensity hole of numerous flat, and described hole is in the polypropylene film
Portion is in cellular arrangement, and the polypropylene film is configured as carrying out charging polarization under strong electric field environment with described hole
Form permanent positive and negative charge；The metal electrode layer being respectively arranged in the polypropylene film both side surface, the polypropylene are thin
Film is configured as can be of reciprocating vibration in the thickness direction thereof when the metal electrode layer connects the voltage signal of change.
Alternatively, the metal electrode layer is gold, corronil, aluminium or silver electrode.
Alternatively, the metal electrode layer magnetron sputtering in either vacuum evaporation in or silk-screen printing in the polypropylene
The surface of film both sides.
Alternatively, the wire for input signal is led on the metal electrode layer.
Alternatively, it is electrically connected with flexible PCB on the metal electrode layer.
Alternatively, the polypropylene film between two metal electrode layers is single layer structure.
Alternatively, the sandwich construction that the polypropylene film between two metal electrode layers is laminated for bending.
According to second aspect of the present utility model, there is provided a kind of sound-producing device module.The sound-producing device module includes：On
State sound-producing device；Supporting construction, the sound-producing device component are fixed in the supporting construction, and the supporting construction is positioned at described
The week side of boss of polypropylene film.
According to the third aspect of the present utility model, there is provided a kind of electronic equipment.The electronic equipment includes：Above-mentioned sounding dress
Put module；Housing, the housing are assembled together with the supporting construction in the sound-producing device module.
Alternatively, set between the polypropylene film and the housing formed with the preceding operatic tunes on the wall of the housing
Have and go out acoustic aperture with what the preceding operatic tunes connected.
Inventor of the present utility model has found, the existing miniature sound-producing device of moving-coil type needs magnetic circuit system as driving source,
Still need to occupy certain volume.The thickness more and more thinner of the electronic equipments such as the smart mobile phone of now, keep for loudspeaker or
The space of receiver is also less and less.The physical vibration space of product is so necessarily caused further to reduce, so as to finally influence
Maximum voice output of the miniature sound-producing device of moving-coil type in low-frequency range.Therefore, the utility model to be realized technical assignment or
Technical problem to be solved be it is that those skilled in the art never expect or it is not expected that, therefore the utility model is one
The new technical scheme of kind.
In sound-producing device provided by the utility model, module and electronic equipment, after polypropylene film is electrically charged polarization,
Formed with permanent positive and negative charge in its inner void.The inside of polypropylene film has the high intensity hole of numerous flat
Hole.Numerous holes are in cellular arrangement inside polypropylene film.When metal electrode layer connects the voltage signal of change, poly- third
Alkene film can be of reciprocating vibration in the thickness direction thereof.
Numerous flat holes are in cellular arrangement, can ensure that polypropylene film is bearing microvibration, as sound is believed
Number when, have sufficiently high sensitivity；Also can ensure to keep elastic working range in the case where bearing larger pressure condition.
Sound-producing device component does not need magnetic circuit system to rely on itself when connecting the voltage signal of change as driving source
Piezoelectric property produce vibration.Structure is simplified, is frivolous.
The sound-producing device module includes the sound-producing device component and supporting construction.The sound-producing device module can be set with electronics
Standby housing parts directly assemble use, can make full use of the free space in electronic equipment, ensure that sound-producing device component exists
The maximum voice output of low-frequency range.
It is of the present utility model other by referring to the drawings to the detailed description of exemplary embodiment of the present utility model
Feature 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 embodiment of the present utility model, and
And it is used to explain principle of the present utility model together with its explanation.
Fig. 1 is the electron microscope of the polypropylene film provided in a kind of embodiment of the utility model；
Fig. 2 is the schematic diagram of the sound-producing device provided in a kind of embodiment of the utility model；
Fig. 3 is the structural representation of the sound-producing device module provided in a kind of embodiment of the utility model；
Fig. 4 is the structural representation of the electronic equipment provided in a kind of embodiment of the utility model；
Fig. 5 is the partial sectional view of the electronic equipment provided in a kind of embodiment of the utility model.
Wherein, 1：Sound-producing device；10：Polypropylene film:100：Hole；11：Metal electrode layer；2：Electrical connector；3：Branch
Support structure；4：Housing；40：Antetheca；41：Side wall；5：Go out acoustic aperture；6：The preceding operatic tunes.
Embodiment
Various exemplary embodiments of the present utility model are described in detail now with reference to accompanying drawing.It should be noted that：It is unless another
Illustrate outside, the part and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments is unlimited
The scope of the utility model processed.
The description only actually at least one exemplary embodiment is illustrative to be never used as to this practicality below
New and its application or any restrictions used.
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.
The utility model provides a kind of sound-producing device component, and with reference to figure 1, Fig. 2, it is thin that the sound-producing device 1 includes polypropylene
Film 10 and metal electrode layer 11.The inside of the polypropylene film 10 has numerous holes 100.In the polypropylene film 10
Hole 100 be in flat, and the hole 100 in the polypropylene film 10 has high intensity.Described hole 100 is described
The inside of polypropylene film 10 is in cellular arrangement.
Fig. 1 shows the electron microscope of the polypropylene film 10 in a kind of embodiment of the utility model.
Under original state, the hole 100 in the polypropylene film 10 is more fluffy, between numerous fluffy holes 100
Can mutually it extrude so that the polypropylene film 10 is deformed.The intensity of described hole 100 is high, is not likely to produce permanent
Deformation and fracture.
Under strong electric field environment, charging polarization is carried out to the polypropylene film 10, to be formed forever in described hole 100
Long positive and negative charge.The metal electrode layer 11 is respectively arranged in the both side surface of polypropylene film 10, with described poly-
The both sides of Polypropylene film 10 apply the voltage of change.
Positive and negative charge is stored in described hole 100, when the metal electrode layer 11 in the both sides of polypropylene film 10 is applied
When adding the voltage of change, the polypropylene film 10 being polarized can produce corresponding change in a thickness direction (in a thickness direction
Vibration), the change realizes the purpose of sounding so as to act on sound pressure signal corresponding to generation in atmosphere.
In the utility model, the inside of the polypropylene film 10 has the hole 100 of numerous flat and high intensity.It is many
Multiple hole 100 is in cellular arrangement inside the polypropylene film 10, more fluffy.There is positive negative electricity in described hole 100
Lotus.Similar sponge water squeezing, when the metal electrode layer 11 connects the voltage signal of change, the polypropylene film 10 can be along it
Thickness direction is of reciprocating vibration.
Numerous holes 100 are in cellular arrangement inside the polypropylene film 10, more fluffy, can ensure polypropylene
Film 10 is bearing microvibration, during such as voice signal, there is sufficiently high sensitivity；Also can ensure bearing larger pressure
In the case of keep elastic working range.
Sound-producing device 1 of the present utility model is used as piezoelectric membrane using polypropylene film 10, and polypropylene film 10 is a kind of
New piezoelectric, for PVDF piezoelectric membranes of the prior art, its piezoelectric charge coefficients to be higher by 10 times with
On, its size, size and shape can arbitrarily be cut out and unrestricted, and its internal junction will not be destroyed because of cutting out
Structure；In addition, polypropylene film 10 also has the characteristics of lightweight is ultra-thin, can be with bending fold, the most thin thickness that can reach 0.07 ㎜
Degree, so even multilayer laminated, thickness of the thickness also much smaller than vibrating diaphragm of the prior art；In addition, polypropylene film
10 can also bear it is long-term, repeatedly, the Impact Load of high intensity without failing, ensure the reliability of product, extend and use
Life-span.Have to carry is a bit, although polypropylene film 10 has many advantages, such as above-mentioned, its cost is very cheap, can be with
Reduce the manufacturing cost of the product of this material of application.
The piezoelectric film type sound-producing device 1 does not need magnetic circuit system as driving source, when connecting the voltage signal of change
Vibration can be produced by the piezoelectric property of itself.Structure is simplified, is frivolous.
The metal electrode layer 11 is used to apply the voltage of change in the both sides of the polypropylene film 10.The metal electricity
The specific material of pole layer 11 can have a variety of.For example, the metal electrode layer 11 be gold, corronil, aluminium, silver electrode or its
His metal electrode layer.
The mode that the metal electrode layer 11 is arranged on the surface of polypropylene film 10 can have a variety of.
For example, the metal electrode layer 11 can be with magnetron sputtering in the surface of the both sides of polypropylene film 10.
In another example the metal electrode layer 11 can be with vacuum evaporation in the surface of the both sides of polypropylene film 10.
For another example the metal electrode layer 11 can be with silk-screen printing in the surface of the both sides of polypropylene film 10.
With reference to figure 3, the metal electrode layer 11 is used to apply the voltage of change, institute in the both sides of the polypropylene film 10
Stating metal electrode layer 11 need to be electrically connected with external circuit.The metal electrode layer 11 can pass through electrical connector 2 and outside
Circuit electrically connects.
In one example, the wire for inputting sound electric signal is led on the metal electrode layer 11.It is described to lead
The quantity of line is two.The metal electrode layer 11 is electrically connected by the wire with external circuit respectively.
In another example, flexible PCB is electrically connected with the metal electrode layer 11.The metal electrode layer 11
Electrically connected respectively by the flexible PCB with external circuit.
The polypropylene film 10 is between two metal electrode layers 11.The specific knot of the polypropylene film 10
Structure can have a variety of.
In one example, the polypropylene film 10 between two metal levels is single layer structure.Poly- the third of single layer structure
Alkene film 10 can meet to use needs.
In another example, the polypropylene film 10 between two metal levels is the sandwich construction of bending stacking.It is single
The sensitivity of the polypropylene film 10 of Rotating fields may can improve sound-producing device than relatively low using the sandwich construction of multiple-layer stacked
The sensitivity of component 1.
In specific assembling process, a polypropylene film 10 can be carried out once or multiple bending, it is described afterwards poly-
Polypropylene film 10 is in the multilayer being laminated.The metal electrode layer 11 is set in the both side surface of multi-layer polypropylene film 10 again.
Even the polypropylene film 10 of multiple-layer stacked, thickness of its thickness still much lower than conventional vibrating diaphragm.By its structure
Into sound-producing device 1 structure still simplify, it is frivolous.
The utility model additionally provides a kind of sound-producing device module, and with reference to figure 3, it is new that the sound-producing device module includes this practicality
The sound-producing device 1 and supporting construction 3 that type provides.The sound-producing device 1 is fixed in the supporting construction 3.The support knot
Structure 3 is located at the week side of boss of the polypropylene film 10.Fixed for example, the sound-producing device component 1 can heat with the supporting construction 3
Or it is adhesively fixed.
The concrete structure of the supporting construction 3 can have a variety of.For example, the supporting construction 3 can have it is square or
The profile of rectangle or other shapes, two offsides that can be respectively with the sound-producing device component are fixed together.For another example branch
Support structure 3 can be hard shell or flake structure etc..
In one example, with reference to figure 3, the supporting construction 3 can be the loop configuration of middle hollow out.The supporting construction
3 are surrounded on the surrounding of the sound-producing device 1.The sound-producing device 1 is located at the middle hollow out position of the supporting construction 3, and
It is fixed together with the supporting construction 3.
It is appreciated that the supporting construction 3 can also ensure that the polypropylene film 10 back and forth shakes along its thickness direction
It is dynamic, prevent polarization phenomena.
The sound-producing device 1 can be assemblied in corresponding electronic equipment by the supporting construction 3.The sound-producing device module
Use can be directly assembled with the housing parts of electronic equipment for consumption, the free space in electronic equipment can be made full use of,
Ensure maximum voice output of the sound-producing device component 1 in low-frequency range.
The utility model additionally provides a kind of electronic equipment, the electronic equipment can be, but not limited to, smart mobile phone,
Intelligent watch, game machine, wear display device, tablet personal computer etc..With reference to figure 4, the electronic equipment includes being that utility model provides
Sound-producing device module and housing 4.The housing 4 is assembled together with the supporting construction 3 in the sound-producing device module.Example
Such as, the housing 4 can be the outer shell of smart mobile phone.
The side of the polypropylene film 10 needs to be provided with passage of speaking.The concrete structure of the passage of speaking, set
Mode can have a variety of.Preferably, with reference to figure 5, the operatic tunes 6 before being formed between the polypropylene film 10 and the housing 4.
The wall of the housing 4 is provided with goes out acoustic aperture 5 with what the preceding operatic tunes 6 connected.
Specifically, with reference to figure 5, the housing 4 can be in or approximation is in rectangular parallelepiped structure.The housing 4 includes antetheca
40 and the side wall 41 positioned at the side of antetheca 40.The preceding operatic tunes 6 be formed at the polypropylene film 10 and antetheca 40 it
Between.It is described go out acoustic aperture 5 be to be arranged at through hole in the side wall 41.
In addition, the concrete structure of the supporting construction 3 can according to the casting of electronic device 4 structure, go out acoustic aperture 5
Specific design is carried out in position, to form the preceding operatic tunes 6.
In addition, the polypropylene film 10 other side formed with the rear operatic tunes.The supporting construction 3 can be set
For ease of forming the rear operatic tunes.
Although some specific embodiments of the present utility model are described in detail by example, this area
It is to be understood by the skilled artisans that example above merely to illustrate, rather than in order to limit the scope of the utility model.This
Field it is to be understood by the skilled artisans that can not depart from the scope of the utility model and spirit in the case of, to above example
Modify.The scope of the utility model is defined by the following claims.
Claims (10)
- A kind of 1. sound-producing device, it is characterised in that including：Polypropylene film (10), the inside of the polypropylene film (10) have the high intensity hole (100) of numerous flat, institute It is in cellular arrangement that it is internal in the polypropylene film (10), which to state hole (100), and the polypropylene film (10) is configured as Charging polarization is carried out under strong electric field environment to form permanent positive and negative charge in described hole (100)；The metal electrode layer (11) being respectively arranged in the polypropylene film (10) both side surface, the polypropylene film (10) Being configured as can be of reciprocating vibration in the thickness direction thereof when the metal electrode layer (11) connects the voltage signal of change.
- 2. sound-producing device according to claim 1, it is characterised in that the metal electrode layer (11) be gold, corronil, Aluminium or silver electrode.
- 3. sound-producing device according to claim 1 or 2, it is characterised in that metal electrode layer (11) magnetron sputtering in Either vacuum evaporation in or silk-screen printing in the both side surface of the polypropylene film (10).
- 4. sound-producing device according to claim 1, it is characterised in that lead to and be used on the metal electrode layer (11) The wire of input signal.
- 5. sound-producing device according to claim 1, it is characterised in that be electrically connected with the metal electrode layer (11) soft Property circuit board.
- 6. sound-producing device according to claim 1, it is characterised in that poly- third between two metal electrode layers (11) Alkene film (10) is single layer structure.
- 7. sound-producing device according to claim 1, it is characterised in that poly- third between two metal electrode layers (11) The sandwich construction that alkene film (10) is laminated for bending.
- A kind of 8. sound-producing device module, it is characterised in that including：According to the sound-producing device any one of claim 1-7；Supporting construction (3), the sound-producing device are fixed in the supporting construction (3), and the supporting construction (3) is positioned at described poly- The week side of boss of Polypropylene film (10).
- 9. a kind of electronic equipment, it is characterised in that including：Sound-producing device module according to claim 8；Housing (4), the housing (4) are assembled together with the supporting construction (3) in the sound-producing device module.
- 10. electronic equipment according to claim 9, it is characterised in that in the polypropylene film (10) and the housing (4) formed with the preceding operatic tunes (6) between, it is provided with the wall of the housing (4) and goes out acoustic aperture (5) with what the preceding operatic tunes (6) connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720832154.6U CN207200959U (en) | 2017-07-10 | 2017-07-10 | A kind of sound-producing device, module and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720832154.6U CN207200959U (en) | 2017-07-10 | 2017-07-10 | A kind of sound-producing device, module and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207200959U true CN207200959U (en) | 2018-04-06 |
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ID=61785633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720832154.6U Active CN207200959U (en) | 2017-07-10 | 2017-07-10 | A kind of sound-producing device, module and electronic equipment |
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| Country | Link |
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| CN (1) | CN207200959U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107277700A (en) * | 2017-07-10 | 2017-10-20 | 歌尔股份有限公司 | A kind of sound-producing device, module and electronic equipment |
| CN109660926A (en) * | 2019-02-28 | 2019-04-19 | 汉得利（常州）电子股份有限公司 | A kind of ultra thin handset loudspeaker made of printing voice coil |
| CN109874098A (en) * | 2019-01-30 | 2019-06-11 | 汉得利（常州）电子股份有限公司 | A kind of ultra thin handset loudspeaker made of printed coil |
-
2017
- 2017-07-10 CN CN201720832154.6U patent/CN207200959U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107277700A (en) * | 2017-07-10 | 2017-10-20 | 歌尔股份有限公司 | A kind of sound-producing device, module and electronic equipment |
| CN109874098A (en) * | 2019-01-30 | 2019-06-11 | 汉得利（常州）电子股份有限公司 | A kind of ultra thin handset loudspeaker made of printed coil |
| CN109660926A (en) * | 2019-02-28 | 2019-04-19 | 汉得利（常州）电子股份有限公司 | A kind of ultra thin handset loudspeaker made of printing voice coil |
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