CN207200960U - Plane diaphragm and earphone - Google Patents
Plane diaphragm and earphone Download PDFInfo
- Publication number
- CN207200960U CN207200960U CN201720621511.4U CN201720621511U CN207200960U CN 207200960 U CN207200960 U CN 207200960U CN 201720621511 U CN201720621511 U CN 201720621511U CN 207200960 U CN207200960 U CN 207200960U
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- plane diaphragm
- glue
- line
- planar coil
- layer
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Abstract
It the utility model is related to a kind of plane diaphragm and earphone.The plane diaphragm includes damping layer, substrate layer, glue-line, coating and the planar coil formed by metal line, one side surface of the planar coil is covered with damping layer, another side surface is adhesively fixed with coating by glue-line, it is made up on the damping layer covered with substrate layer, the substrate layer of polyether-ether-ketone.A technical problem to be solved in the utility model is to reduce the thickness of plane diaphragm.One purposes of utility model is applied in earphone.
Description
Technical field
The utility model belongs to electroacoustic transduction technical field, specifically, the utility model is related to a kind of plane diaphragm and ear
Machine.
Background technology
Consumer electronics product is quickly grown in recent years, and function is gradually diversified.Electroacooustic power conversion device is as offer sounding
The device of effect turns into indispensable part in electronic product.The architectural feature of Electroacooustic power conversion device generally use has moving-coil
Formula loudspeaker, moving iron type loud-speaker etc..
The Electroacooustic power conversion device of traditional structure disclosure satisfy that the primary demand of electronic equipment, still, with electronic product
Size requires less and less, and the requirement to shape is more and more harsher, and the structure and performance of Electroacooustic power conversion device it is also proposed more
High requirement.Those skilled in the art begin attempt to use plate vibrating diaphragm in Electroacooustic power conversion device, are changed so as to reduce electroacoustic
The space that energy device takes.
Existing plate vibrating diaphragm is the diaphragm structure for being combined together coiler part with vibration film layer, and coiler part is general
To be realized with flexible PCB, coiler part and vibration film layer are fabricated separately and then are bonded and fit together, as shown in figure 1,
Coiler part 03 can be bonded together by layers of two-sided 02 and vibration film layer 01.Coiler part has been laminated base material 031, covering
The film layers such as film 032, planar coil 033, vibration film layer are generally also laminated with the film layers such as damping 011, base material 012.Although this shake
Membrane structure effectively reduces the assembly space required for it, but also brings new technical problem.Existing plate vibrating diaphragm
It is compounded to form by vibrating diaphragm layer, adhesive linkage and circuit layer, to the overall packaging technology of vibrating diaphragm requires higher, assembly difficulty is larger.And
And the integral thickness of plate vibrating diaphragm is larger, acoustical behavior is not good enough.
Thus, it is necessary to be improved to the structure of plate vibrating diaphragm, the step of simplifying assembly technology, or reduce flat board
The integral thickness of type vibrating diaphragm.
Utility model content
A purpose of the present utility model is to provide a kind of improved diaphragm structure.
According to one side of the present utility model, there is provided a kind of plane diaphragm, including damping layer, substrate layer, glue-line, cover
Cap rock and the planar coil formed by metal line, a side surface of the planar coil is covered with damping layer, opposite side table
Face is adhesively fixed with coating by glue-line, is made up on the damping layer covered with substrate layer, the substrate layer of polyether-ether-ketone.
Alternatively, the coating is made up of polyether-ether-ketone.
Alternatively, the damping layer is mixed to form by acrylate copolymer and bonding agent.
Alternatively, the glue-line is heat sensitive adhesive layer.
Alternatively, the glue-line is formed by damping material.
Alternatively, glue-line is mixed to form by acrylate copolymer and bonding agent.
Alternatively, the planar coil is formed by copper foil, and the thickness range of the planar coil is 16-22 microns.
Alternatively, the total thickness of the damping layer and glue-line is 10-30 microns.
Alternatively, the thickness range of the substrate layer is 6-9 microns, and the thickness range of the coating is 6-9 microns.
The utility model additionally provides a kind of earphone, and the earphone includes housing and sound-producing device, and the sound-producing device is set
Put in the housing, be provided with above-mentioned plane diaphragm and magnetic circuit system in the sound-producing device, the magnetic circuit system with it is described
The position correspondence of the planar coil of plane diaphragm, the plane diaphragm are configured in magnetic field excitation caused by magnetic circuit system
Lower vibration.
One of the present utility model has technical effect that, reduces the integral thickness of plane diaphragm.
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
The accompanying drawing of a part for constitution instruction describes embodiment of the present utility model, and uses together with the description
In explanation principle of the present utility model.
Fig. 1 is the side structure schematic diagram of plate vibrating diaphragm in the prior art；
Fig. 2 is the side structure schematic diagram of plane diaphragm provided by the utility model.
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 and equipment known to person of ordinary skill in the relevant, but in appropriate situation
Under, the technology and equipment 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 plane diaphragm, and traditional coiler part and vibration film layer are incorporated in one by the vibrating diaphragm
In individual overall film layer, unnecessary stepped construction is eliminated, reduces the integral thickness of plane diaphragm.Further, improve flat
The acoustical behavior of face vibrating diaphragm.
As shown in Fig. 2 the plane diaphragm includes planar coil 1, damping layer 2, substrate layer 3, glue-line 4 and coating 5.Institute
Planar coil is stated to be formed by metal line.The planar coil 1 is preferably placed at the intermediate layer position of whole plane diaphragm, so,
Planar coil 1 can obtain good protection.Can be covered with damping layer 2, the resistance on one side surface of the planar coil 1
Buddhist nun's layer 2 is used for the vibration performance for improving plane diaphragm, so that plane diaphragm can adapt to the vibration sounding requirement of sound-producing device.Institute
Stating glue-line 4 can be covered on another side surface of planar coil 1, by the bonding effect of glue-line 4, can glue coating 5
It is connected on glue-line 4.The coating 5 plays a protective role to the planar coil 1, can prevent planar coil 1 from aoxidizing, by
Damage.
The damping layer 2 is formed by damping material, and its own can also play certain effect of being adhesively fixed.As shown in Fig. 2
Substrate layer 3 is also covered with the damping layer 2, the substrate layer 3 plays a part of integrated support to plane diaphragm.Especially,
In the utility model, the substrate layer 3 is made up of polyether-ether-ketone (PEEK), or by material system based on polyether-ether-ketone
Into.Relative to the material for being traditionally used for being formed substrate layer, polyether-ether-ketone has good acoustic vibration performance, disclosure satisfy that hair
Requirement of the acoustic device to the vibration performance of plane diaphragm.
On the basis of substrate layer is formed using polyether-ether-ketone, plane diaphragm provided by the utility model is also just without volume again
The vibrating diaphragm layer that outer attachment is made up of base material and damping combination.Plane diaphragm itself just disclosure satisfy that the requirement of vibration performance.So,
On the one hand substantially it is thinned relative to prior art, plane diaphragm thickness of the present utility model, when vibrating work with higher
Sensitivity, the controllability of amplitude, frequency to vibrating diaphragm are stronger.There is more preferable acoustics using earphone made of this vibrating diaphragm
Energy.Further, it is necessary to which the film layer for mounting combination is reduced, the difficulty and cost of manufacture are reduced.It can also enough increase vibrating diaphragm
The consistency of performance of itself.Especially, the dielectric constant of polyether-ether-ketone, dielectric loss are relatively low, so using polyether-ether-ketone
(PEEK) impedance of planar coil can be reduced by forming substrate layer, that is, reduce the energy loss of circuit.Electricity can be saved, it is right
The power demand of power supply reduces.
Alternatively, the coating can use the material such as polyimides (PI) or polyethylene terephthalate (PET)
Material is made, to provide protection, anti-oxidation effect to planar coil.Especially, in preferred embodiment of the present utility model,
The coating can also be made of polyether-ether-ketone (PEEK) material.So, two outer surface layers of the plane diaphragm are equal
It is made up of polyether-ether-ketone, the vibration of the both side surface of plane diaphragm newly can be consistent, and balance is more preferable.Moreover, plane diaphragm is whole
Body acoustical behavior can be lifted preferably.
In the utility model, the damping layer itself also has certain bonding effect, and alternatively, the damping layer can be with
It is mixed to form by poly- phenoxy propionic acid polymer with bonding agent.The damping layer can play buffering vibration, the work of stable vibration frequency
With.So that plane diaphragm can be with stable amplitude and frequency vibration sounding.The utility model is not to the damping layer
Material is limited, and in other embodiments, other materials can also be used to form damping layer, for example, using epoxy glue, Asia
The materials such as gram force glue form damping layer.
For glue-line, alternatively, the glue-line can use heat-sensitive glue, heat-sensitive resin to be made.Heat-sensitive glue have it is stable, can
The bonding effect leaned on, and effectively can seal planar coil, play a protective role.Heat-sensitive glue or heat-sensitive resin itself
With damping, the effect of damping can be also played to a certain extent.
Preferably, the glue-line directly can also be made up of damping material, by increasing the adhesive property of damping material, make
Damping material can reach buffering vibration and the effect being adhesively fixed.With the damping layer similarly, the glue-line can also be by
Acrylate copolymer and bonding agent are mixed to form.In this preferred embodiment, the both sides of the planar coil are all by hindering
Damping material is made, and can show more stable, the more preferable vibrating effect of effect.The technical scheme can also be with coating also by gathering
Embodiment is combined together made of ether ether ketone.So, the material of the stepped construction of both sides is identical above and below planar coil,
The vibration characteristics symmetry shown is more preferable.Moreover, substrate layer and coating that damping layer is formed with polyether-ether-ketone can be to flat
Planar coil forms effective protective effect, without the protective layer for additionally setting other materials to be formed again.
Alternatively, the planar coil can be made up of copper foil, can also be made up of other conductive materials, can be according to institute
Planar coil is made in the concrete application environmental selection different materials for stating plane diaphragm.Preferably, the thickness model of the planar coil 1
Enclosing can be in 16-22 micron.In this thickness range, the planar coil 1 can either meet that the reliability of circuit trace will
Ask, excessive material will not be expended again.Especially, in the thickness range, planar coil 1 has good vibration deformability,
Being capable of the plane diaphragm entirety deformation vibration at any time.After completing to process, large number of orifices is usually there will be on the planar coil 1
Hole, damping layer 2 and glue-line 4 positioned at the both sides of planar coil 1 can interpenetrate to the opposite side of planar coil 1.
Alternatively, the total thickness of the damping layer 2 and glue-line 4 is 10-30 microns.For example, in a kind of embodiment
In, the thickness of the damping layer 2 can be 10 microns, and the thickness of the glue-line 4 is also 10 microns.So, positioned at planar coil
The stepped construction of both sides has identical thickness, and vibration performance symmetry is higher.If the gross thickness of glue-line and damping layer is blocked up,
The integral thickness of plane diaphragm, which can be caused, to be increased, and reduces the sensitivity of plane diaphragm on the contrary.But the utility model is not strict
The gross thickness of limitation damping layer and glue-line has to comply with above-mentioned thickness range, can be adjusted according to actual performance requirement.
Alternatively, the thickness range of the substrate layer 3 can be 6-9 microns, and the thickness range of coating 5 can also be 6-
9 microns.Preferably, the thickness of the substrate layer 3 can be equal with the thickness of coating 5, improves the integrated symmetric of plane diaphragm
Property.
The utility model additionally provides a kind of earphone, and the earphone includes housing and sound-producing device.The sound-producing device is set
In the housing, above-mentioned plane diaphragm and magnetic circuit system are provided with the sound-producing device.Circuit unit in the earphone
Electrically connected with the planar coil on the plane diaphragm.Magnetic circuit system is corresponding with the planar coil position of plane diaphragm so that
Planar coil is in caused by magnetic circuit system in magnetic field.So, when the circuit unit of earphone is by transmission of sound signals to planar line
When in circle, under the incentive action in magnetic field, the plane diaphragm is configured to realize vibration sounding.The sound-producing device is excellent
Choosing can be panel speaker, or can be the loudspeaker of other structures form, and the utility model is limited not to this.
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 above example 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)
1. a kind of plane diaphragm, it is characterised in that formed including damping layer, substrate layer, glue-line, coating and by metal line
Planar coil, covered with damping layer, another side surface is adhesively fixed with by glue-line to be covered for a side surface of the planar coil
Cap rock, it is made up covered with substrate layer, the substrate layer of polyether-ether-ketone on the damping layer.
2. plane diaphragm according to claim 1, it is characterised in that the coating is made up of polyether-ether-ketone.
3. plane diaphragm according to claim 1, it is characterised in that the damping layer is by acrylate copolymer and bonding agent
It is mixed to form.
4. plane diaphragm according to claim 1, it is characterised in that the glue-line is heat sensitive adhesive layer.
5. plane diaphragm according to claim 1, it is characterised in that the glue-line is formed by damping material.
6. plane diaphragm according to claim 5, it is characterised in that glue-line mixes shape by acrylate copolymer with bonding agent
Into.
7. plane diaphragm according to claim 1, it is characterised in that the planar coil is formed by copper foil, the plane
The thickness range of coil is 16-22 microns.
8. plane diaphragm according to claim 1, it is characterised in that the total thickness of the damping layer and glue-line is
10-30 microns.
9. plane diaphragm according to claim 1, it is characterised in that the thickness range of the substrate layer is 6-9 microns, institute
The thickness range for stating coating is 6-9 microns.
10. a kind of earphone, it is characterised in that the earphone includes housing and sound-producing device, and the sound-producing device is arranged on described
In housing, claim 1-9 one of any plane diaphragm and magnetic circuit system, the magnetic circuit are provided with the sound-producing device
System and the position correspondence of the planar coil of the plane diaphragm, the plane diaphragm are configured to caused by magnetic circuit system
Vibrated under magnetic field excitation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720621511.4U CN207200960U (en) | 2017-05-31 | 2017-05-31 | Plane diaphragm and earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720621511.4U CN207200960U (en) | 2017-05-31 | 2017-05-31 | Plane diaphragm and earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207200960U true CN207200960U (en) | 2018-04-06 |
Family
ID=61793803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720621511.4U Active CN207200960U (en) | 2017-05-31 | 2017-05-31 | Plane diaphragm and earphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207200960U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110035375A (en) * | 2019-03-13 | 2019-07-19 | 东莞涌韵音膜有限公司 | Using the method for non-polyimides preparation ribbon-type high-pitch vibrating diaphragm |
| CN110572746A (en) * | 2019-08-19 | 2019-12-13 | 歌尔股份有限公司 | A conducting film and sound generating mechanism for sound generating mechanism |
-
2017
- 2017-05-31 CN CN201720621511.4U patent/CN207200960U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110035375A (en) * | 2019-03-13 | 2019-07-19 | 东莞涌韵音膜有限公司 | Using the method for non-polyimides preparation ribbon-type high-pitch vibrating diaphragm |
| CN110572746A (en) * | 2019-08-19 | 2019-12-13 | 歌尔股份有限公司 | A conducting film and sound generating mechanism for sound generating mechanism |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |