CN104683923A - Miniature loudspeaker diaphragm - Google Patents
Miniature loudspeaker diaphragm Download PDFInfo
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- CN104683923A CN104683923A CN201510116208.4A CN201510116208A CN104683923A CN 104683923 A CN104683923 A CN 104683923A CN 201510116208 A CN201510116208 A CN 201510116208A CN 104683923 A CN104683923 A CN 104683923A
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- lamella
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- vibrating diaphragm
- fluoropolymer
- microspeaker
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Abstract
The invention provides a miniature loudspeaker diaphragm. The miniature loudspeaker diaphragm comprises a first flaky layer, wherein the first flaky layer is a composite flaky layer comprising fluoropolymer and polyether-ether-ketone. The heat resistance, size stability, surface friction, tearing strength and puncture resistance of the miniature loudspeaker diaphragm can be improved, so that the comprehensive performance of the miniature loudspeaker diaphragm is more excellent.
Description
Technical field
The present invention relates to diaphragm of loudspeaker technical field, more specifically, relate to a kind of Microspeaker vibrating diaphragm.
Background technology
PEEK (Poly Ether Ether Ketone, polyether-ether-ketone), as a kind of macromolecular material taking into account rigidity and toughness, has good thermal property, has been widely used in Microspeaker technical field.At present, the vibrating diaphragm major part of Microspeaker is made up of individual layer PEEK material or the composite material containing PEEK.
But carrying out in the process of reliability test the existing Microspeaker be made up of individual layer PEEK material or the composite material containing PEEK, there are the following problems:
Usually, the glass transition temperature of PEEK and composite material thereof is at about 143 DEG C, and after the heating-up temperature of Microspeaker is more than the glass transition temperature of PEEK and composite material thereof, PEEK and composite material thereof will deliquescing, occur irreversible distortion.But in the process of Microspeaker reliability test, the actual temperature that the PEEK of composition vibrating diaphragm and composite material thereof may bear can reach 150 DEG C, because PEEK and composite material thereof cannot bear so high temperature in the secure state, the vibrating diaphragm of Microspeaker can suffer expendable destruction, its acoustical behavior will be subject to serious impact, such as, raised audition noise phenomenon caused etc. by resonance frequency.
Summary of the invention
In view of the above problems, the object of this invention is to provide a kind of Microspeaker vibrating diaphragm, to solve the problem of existing Microspeaker vibrating diaphragm non-refractory.
Microspeaker vibrating diaphragm provided by the invention, comprises the first lamella, and the first lamella is the compact layer of fluoropolymer and polyether-ether-ketone.
In addition, preferred structure is, Microspeaker vibrating diaphragm also comprises the second lamella combined and below the first lamella, and the second lamella is thermoplastic elastomer.
In addition, preferred structure is, Microspeaker vibrating diaphragm also comprises and is incorporated into the second lamella below the first lamella and the 3rd lamella successively; Wherein, the second lamella is thermoplastic elastomer, esters of acrylic acid glue-line or silica type glue-line; 3rd lamella is the compact layer of fluoropolymer and polyether-ether-ketone, polyether-ether-ketone layer, polyetherimide amine layer, thermoplastic elastomer, polyester layer or polyarylate layer.
Moreover preferred structure is, Microspeaker vibrating diaphragm also comprises the second lamella, the 3rd lamella and the 4th lamella that are incorporated into successively below the first lamella; Wherein, the second lamella and third layer are thermoplastic elastomer, esters of acrylic acid glue-line or silica type glue-line; 4th layer is the compact layer of fluoropolymer and polyether-ether-ketone, polyether-ether-ketone layer, polyetherimide amine layer, thermoplastic elastomer, polyester layer or polyarylate layer.
In addition, preferred structure is, Microspeaker vibrating diaphragm also comprises the second lamella, the 3rd lamella, the 4th lamella and the 5th lamella that are incorporated into successively below the first lamella; Wherein, the second lamella and the 4th lamella are thermoplastic elastomer, esters of acrylic acid glue-line or silica type glue-line; 3rd lamella and the 5th lamella are the compact layer of fluoropolymer and polyether-ether-ketone, polyether-ether-ketone layer, polyetherimide amine layer, thermoplastic elastomer, polyester layer or polyarylate layer.
In addition, preferred structure is, thermoplastic elastomer is polyurethane elastomer layer or polyester elastomer layer.
In addition, preferred structure is, fluoropolymer is the alkane polymer that part or all of hydrogen replaced by fluorine.
Moreover, preferred structure is, fluoropolymer is polytetrafluoroethylene, fluorinated ethylene propylene copolymer, poly-perfluoroalkoxy resin, polytrifluorochloroethylene, ethylene-chlorotrifluoro-ethylene copolymer, ethylene-tetrafluoroethylene copolymer, Kynoar or polyvinyl fluoride.
In addition, preferred structure is, the mass percent of fluoropolymer in the first lamella is 0.5%-30%.
Moreover preferred structure is, the integral thickness of Microspeaker vibrating diaphragm is 2 μm-50 μm.
Compared with existing Microspeaker vibrating diaphragm, beneficial effect of the present invention is embodied in:
1, a part of lamella of Microspeaker vibrating diaphragm provided by the invention adopts the compact layer of fluoropolymer and polyether-ether-ketone, and the fluoropolymer in compact layer can improve the heat resistance of polyether-ether-ketone, dimensional stability, surface friction property, tearing toughness and puncture resistance.
2, when vibrating diaphragm is made up of multilayer material, using damping layer as intermediate layer, the resonance frequency that Microspeaker is lower can be kept, improve the acoustical behavior of Microspeaker.
In order to realize above-mentioned and relevant object, will describe in detail and the feature particularly pointed out in the claims after one or more aspect of the present invention comprises.Explanation below and accompanying drawing describe some illustrative aspects of the present invention in detail.But what these aspects indicated is only some modes that can use in the various modes of principle of the present invention.In addition, the present invention is intended to comprise all these aspects and their equivalent.
Accompanying drawing explanation
By reference to the content below in conjunction with the description of the drawings and claims, and understand more comprehensively along with to of the present invention, other object of the present invention and result will be understood and easy to understand more.In the accompanying drawings:
Fig. 1 is the structural representation of the Microspeaker vibrating diaphragm according to the embodiment of the present invention one;
Fig. 2 is the structural representation of the Microspeaker vibrating diaphragm according to the embodiment of the present invention two;
Fig. 3 is the structural representation of the Microspeaker vibrating diaphragm according to the embodiment of the present invention three;
Fig. 4 is the structural representation of the Microspeaker vibrating diaphragm according to the embodiment of the present invention four;
Fig. 5 is the structural representation of the Microspeaker vibrating diaphragm according to the embodiment of the present invention five.
Reference numeral wherein comprises: the first lamella 1, second lamella 2, the 3rd lamella 3, the 4th lamella 4, the 5th lamella 5.
Label identical in all of the figs indicates similar or corresponding feature or function.
Embodiment
Below with reference to accompanying drawing, specific embodiments of the invention are described in detail.
Embodiment one
Fig. 1 shows the structure of the Microspeaker vibrating diaphragm according to the embodiment of the present invention one.
As shown in Figure 1, the Microspeaker vibrating diaphragm that the present embodiment one provides is made up of individual layer lamella, the first lamella 1, first lamella 1 namely shown in accompanying drawing 1 is the compact layer of fluoropolymer and polyether-ether-ketone (Poly Ether Ether Ketone, hereinafter referred to as PEEK).Vibrating diaphragm of the prior art is only made up of PEEK lamella, the present embodiment one by being mixed into the thermal endurance that fluoropolymer improves PEEK lamella in PEEK lamella, when the temperature of PEEK lamella reaches or higher than can not deliquescing after himself glass transition temperature (hereinafter referred to as TG), there will not be irreversible distortion, and Microspeaker vibrating diaphragm is the rigidity that single layer structure can reduce vibrating diaphragm, is easy to machine-shaping.
The fluoropolymer that the present embodiment one is mentioned is the alkane polymer that part or all of hydrogen replaced by fluorine, such as: polytetrafluoroethylene (PTFE), perfluor (ethylene, propylene) (FEP) copolymer, poly-perfluoro alkoxy (PFA) resin, polytrifluorochloroethylene (PCTFF), ethylene-chlorotrifluoro-ethylene copolymer (ECTFE), ethylene-tetrafluoroethylene (ETFE) copolymer, Kynoar (PVDF) and polyvinyl fluoride (PVF) etc.
Mixed with PEEK by above-mentioned wherein any one fluoropolymer, form the compact layer of fluoropolymer and PEEK, the mass percent of fluoropolymer in compact layer is 0.5%-30%.
It should be noted that, to the requirement that the content of fluorine is not strict in fluoropolymer, but dimensional stability under the thermal endurance of the higher Microspeaker vibrating diaphragm of Oil repellent and high temperature is better.
The flow process making the compact layer of fluoropolymer and PEEK is as follows:
First, according to PEEK pellet and the fluoropolymer particles material of each component of mass percent precise required by pellet, two kinds of pellets are put into high speed mixer mix, after two kinds of pellets mix, join in extruder and carry out blending extrusion, extrude rear pelletizing and form cylindrical pellet monomer, finally, after adopting melting, cylindrical pellet monomer is made the compact layer of fluoropolymer and PEEK by flow casting molding technology.
Above-mentioned flow process describes the manufacturing process of the compact layer of fluoropolymer and PEEK in detail, in following embodiment two to embodiment five, same flow process can be adopted to make the compact layer of fluoropolymer and PEEK, but be not limited thereto kind of a Making programme.
Embodiment two
Fig. 2 shows the structure of the Microspeaker vibrating diaphragm according to the embodiment of the present invention two.
As shown in Figure 2, the Microspeaker vibrating diaphragm that the present embodiment two provides is biplate Rotating fields, first lamella 1 is positioned at the top of the second lamella 2, the compact layer of the first lamella 1 described in embodiment one, second lamella 2 is the thermoplastic elastomer such as polyurethane elastomer (TPU) or polyester elastomer (TPEE), compared to the Microspeaker vibrating diaphragm of the monolithic layer structure that embodiment one provides, the Microspeaker vibrating diaphragm of biplate Rotating fields can increase the elasticity of Microspeaker vibrating diaphragm, reduces Microspeaker vibrating diaphragm in vibration processes by the possibility shattered.
It should be noted that, the combination of compact layer and thermoplastic elastomer needs heat pressing process process.
Embodiment three
Fig. 3 shows the structure of the Microspeaker vibrating diaphragm according to the embodiment of the present invention three.
As shown in Figure 3, the Microspeaker vibrating diaphragm that the present embodiment three provides is three-layer tablet Rotating fields, first lamella is positioned at top layer, second lamella is positioned at intermediate layer, 3rd lamella is positioned at bottom, in other words, first lamella and the 3rd lamella belong to outer, and the second lamella belongs to intermediate layer, two skins all can be set to the compact layer described by embodiment one, also the one deck in two skins can be set to the compact layer described by embodiment one, another layer is set to polyether-ether-ketone (PEEK) layer, Polyetherimide (PEI) layer, thermoplastic elastomer (such as polyurethane elastomer or polyester elastomer TPEE), the Rotating fields such as polyester (PET) layer or polyarylate (PAR) layer.
The second lamella belonging to intermediate layer is set to the glue-line such as esters of acrylic acid glue-line or silica type glue-line usually, can by two outer bound together as intermediate layer using glue-line, play the effect of connection, but also intermediate layer can be set to thermoplastic elastomer, by hot-pressing processing technique, three lamellas be combined.
Contrast known with embodiment two, embodiment three comparatively embodiment two has more an intermediate layer, adopt glue-line as intermediate layer under normal circumstances, because glue-line has good damping and amortization, adopt glue-line can reduce the resonance frequency of Microspeaker vibrating diaphragm as intermediate layer, thus improve the acoustical behavior of Microspeaker.
The Microspeaker vibrating diaphragm of the three-decker described by embodiment three is also the routine selection in this area, therefore, using embodiment three as the preferred embodiments of the present invention.
Embodiment four
Fig. 4 shows the structure of the Microspeaker vibrating diaphragm according to the embodiment of the present invention four.
As shown in Figure 4, the Microspeaker vibrating diaphragm that the present embodiment four-way provides is four-layer structure, first lamella and the 4th lamella are outer, second lamella and the 3rd lamella are internal layer, wherein, first lamella and the 4th lamella all can be set to the compact layer described by embodiment one, also a lamella in the first lamella and the 4th lamella can be set to the compact layer described by embodiment one, and another lamella is set to polyether-ether-ketone (PEEK) layer, Polyetherimide (PEI) layer, thermoplastic elastomer (such as polyurethane elastomer or polyester elastomer TPEE), polyester (PET) layer or polyarylate (PAR) layer etc. Rotating fields, skin is configured to compact layer, Microspeaker vibrating diaphragm is made to have good dimensional stability, and the second lamella and the 3rd lamella are the lamella of same structure, particularly, be in the Rotating fields such as the compact layer of fluoropolymer and PEEK, thermoplastic elastomer (such as polyurethane elastomer or polyester elastomer TPEE), esters of acrylic acid glue-line or silica type glue-line any one, preferably, the second lamella and the 3rd lamella are set to esters of acrylic acid glue-line or silica type glue-line.
Embodiment four is compared with embodiment three, many increases one deck glue-line, this glue-line can increase the damping and amortization of Microspeaker vibrating diaphragm further, namely reduce the resonance frequency of Microspeaker further, thus improve the acoustical behavior of Microspeaker, also can increase the elasticity of Microspeaker vibrating diaphragm, Microspeaker vibrating diaphragm is more not easily shaken brokenly in vibration processes simultaneously.
Embodiment five
Fig. 5 shows the structure of the Microspeaker vibrating diaphragm according to the embodiment of the present invention five.
As shown in Figure 5, the Microspeaker vibrating diaphragm that the present embodiment five provides comprises the five synusia layers stacked gradually, and is respectively the first lamella, the second lamella, the 3rd lamella, the 4th lamella and the 5th lamella; Wherein, the first lamella and the 5th lamella are outer, and the second lamella is internal layer to the 4th lamella.
In the present embodiment five, any one lamella in five lamellas all can be arranged to the compact layer of fluoropolymer and PEEK, preferably, the compact layer of fluoropolymer and PEEK is arranged to skin, at high temperature, the dimensional stability keeping Microspeaker vibrating diaphragm is more conducive to.Particularly, first lamella and the 5th lamella all can be arranged to the compact layer of fluoropolymer and PEEK, in two lamellas one can be arranged to the compact layer of fluoropolymer and PEEK, and another is arranged to the Rotating fields such as polyether-ether-ketone (PEEK) layer, Polyetherimide (PEI) layer, thermoplastic elastomer, polyester (PET) layer or polyarylate (PAR) layer.
Second lamella to the 4th lamella all can be arranged to thermoplastic elastomer (such as polyurethane elastomer or polyester elastomer TPEE), glue-line or thin layer; Wherein, glue-line comprises esters of acrylic acid glue-line and silica type glue-line etc. Rotating fields, and thin layer comprises the Rotating fields such as polyether-ether-ketone (PEEK) layer, Polyetherimide (PEI) layer, polyester (PET) layer or polyarylate (PAR) layer.
As preferably execution mode, second lamella and the 4th lamella are arranged to any one Rotating fields such as esters of acrylic acid glue-line or silica type glue-line, the 3rd lamella are arranged to any one Rotating fields such as polyether-ether-ketone (PEEK) layer, Polyetherimide (PEI) layer, polyester (PET) layer or polyarylate (PAR) layer.This kind of set-up mode is disposed between thin layer by glue-line, is easy to five lamellas to be bonded together.
Above-described embodiment one to five describes the structure of five kinds of Microspeaker vibrating diaphragms in detail, but the present invention is not limited to the lamella of five-layer structure, can also continue upwards to superpose, as six layers, seven layers etc., until the integral thickness of Microspeaker vibrating diaphragm is 50 μm, that is, the scope of Microspeaker vibrating diaphragm integral thickness provided by the invention is between 2 μm-50 μm.
In sum, Microspeaker vibrating diaphragm provided by the invention, by increasing fluoropolymer lamella in Microspeaker vibrating diaphragm, the heat resistance of Microspeaker vibrating diaphragm, dimensional stability, suface friction, tearing toughness and puncture resistance can be improved, make the combination property of Microspeaker vibrating diaphragm more excellent.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection range of claim.
Claims (10)
1. a Microspeaker vibrating diaphragm, is characterized in that, comprises the first lamella, and described first lamella is the compact layer of fluoropolymer and polyether-ether-ketone.
2. Microspeaker vibrating diaphragm as claimed in claim 1, is characterized in that,
Also comprise the second lamella be incorporated into below described first lamella, described second lamella is thermoplastic elastomer.
3. Microspeaker vibrating diaphragm as claimed in claim 1, is characterized in that,
Also comprise and be incorporated into the second lamella below described first lamella and the 3rd lamella successively; Wherein,
Described second lamella is thermoplastic elastomer, esters of acrylic acid glue-line or silica type glue-line;
Described 3rd lamella is the compact layer of fluoropolymer and polyether-ether-ketone, polyether-ether-ketone layer, polyetherimide amine layer, thermoplastic elastomer, polyester layer or polyarylate layer.
4. Microspeaker vibrating diaphragm as claimed in claim 1, is characterized in that,
Also comprise the second lamella, the 3rd lamella and the 4th lamella that are incorporated into successively below described first lamella; Wherein,
Described second lamella and described third layer are thermoplastic elastomer, esters of acrylic acid glue-line or silica type glue-line;
Described 4th layer is the compact layer of fluoropolymer and polyether-ether-ketone, polyether-ether-ketone layer, polyetherimide amine layer, thermoplastic elastomer, polyester layer or polyarylate layer.
5. Microspeaker vibrating diaphragm as claimed in claim 1, is characterized in that,
Also comprise the second lamella, the 3rd lamella, the 4th lamella and the 5th lamella that are incorporated into successively below described first lamella; Wherein,
Described second lamella and described 4th lamella are thermoplastic elastomer, esters of acrylic acid glue-line or silica type glue-line;
Described 3rd lamella and described 5th lamella are the compact layer of fluoropolymer and polyether-ether-ketone, polyether-ether-ketone layer, polyetherimide amine layer, thermoplastic elastomer, polyester layer or polyarylate layer.
6. the Microspeaker vibrating diaphragm according to any one of claim 2-5, is characterized in that,
Described thermoplastic elastomer is polyurethane elastomer layer or polyester elastomer layer.
7. the Microspeaker vibrating diaphragm according to any one of claim 1-5, is characterized in that,
Described fluoropolymer is the alkane polymer that part or all of hydrogen replaced by fluorine.
8. Microspeaker vibrating diaphragm as claimed in claim 7, is characterized in that,
Described fluoropolymer is polytetrafluoroethylene, fluorinated ethylene propylene copolymer, poly-perfluoroalkoxy resin, polytrifluorochloroethylene, ethylene-chlorotrifluoro-ethylene copolymer, ethylene-tetrafluoroethylene copolymer, Kynoar or polyvinyl fluoride.
9. the Microspeaker vibrating diaphragm according to any one of claim 1-5, is characterized in that,
The mass percent of described fluoropolymer in described first lamella is 0.5%-30%.
10. the Microspeaker vibrating diaphragm according to any one of claim 1-5, is characterized in that,
The integral thickness of described Microspeaker vibrating diaphragm is 2 μm-50 μm.
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| CN201510116208.4A CN104683923A (en) | 2015-03-17 | 2015-03-17 | Miniature loudspeaker diaphragm |
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| CN201510116208.4A CN104683923A (en) | 2015-03-17 | 2015-03-17 | Miniature loudspeaker diaphragm |
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| CN201510116208.4A Pending CN104683923A (en) | 2015-03-17 | 2015-03-17 | Miniature loudspeaker diaphragm |
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| CN105188000A (en) * | 2015-09-18 | 2015-12-23 | 歌尔声学股份有限公司 | Loudspeaker diaphragm |
| CN105430579A (en) * | 2016-01-01 | 2016-03-23 | 苏州井利电子股份有限公司 | Water-resistant paper cone for loudspeaker |
| CN105554642A (en) * | 2016-01-01 | 2016-05-04 | 苏州井利电子股份有限公司 | Long-life waterproof cone for loudspeaker |
| CN106162454A (en) * | 2016-08-31 | 2016-11-23 | 歌尔股份有限公司 | The diaphragm of loudspeaker, loudspeaker monomer and electronic equipment |
| CN108574924A (en) * | 2018-05-03 | 2018-09-25 | 深圳市摩码克来沃化学科技有限公司 | A kind of composite diaphragm, the preparation method of composite diaphragm and the acoustical generator equipped with the composite diaphragm |
| CN109618269A (en) * | 2019-02-12 | 2019-04-12 | 共达电声股份有限公司 | A kind of vibrating diaphragm and the electro-acoustic element using the vibrating diaphragm |
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| CN105188000A (en) * | 2015-09-18 | 2015-12-23 | 歌尔声学股份有限公司 | Loudspeaker diaphragm |
| CN105188000B (en) * | 2015-09-18 | 2019-07-19 | 歌尔股份有限公司 | A kind of loudspeaker |
| CN105430579A (en) * | 2016-01-01 | 2016-03-23 | 苏州井利电子股份有限公司 | Water-resistant paper cone for loudspeaker |
| CN105554642A (en) * | 2016-01-01 | 2016-05-04 | 苏州井利电子股份有限公司 | Long-life waterproof cone for loudspeaker |
| CN106162454A (en) * | 2016-08-31 | 2016-11-23 | 歌尔股份有限公司 | The diaphragm of loudspeaker, loudspeaker monomer and electronic equipment |
| CN108574924A (en) * | 2018-05-03 | 2018-09-25 | 深圳市摩码克来沃化学科技有限公司 | A kind of composite diaphragm, the preparation method of composite diaphragm and the acoustical generator equipped with the composite diaphragm |
| CN108574924B (en) * | 2018-05-03 | 2021-04-20 | 深圳市摩码克来沃化学科技有限公司 | Composite vibrating diaphragm, preparation method of composite vibrating diaphragm and acoustic generator with composite vibrating diaphragm |
| CN109618269A (en) * | 2019-02-12 | 2019-04-12 | 共达电声股份有限公司 | A kind of vibrating diaphragm and the electro-acoustic element using the vibrating diaphragm |
| WO2020216195A1 (en) * | 2019-04-24 | 2020-10-29 | 歌尔股份有限公司 | Vibration diaphragm for miniature sound production device and miniature sound production device |
| WO2020216196A1 (en) * | 2019-04-24 | 2020-10-29 | 歌尔股份有限公司 | Vibrating diaphragm for miniature sound producing device and miniature sound producing device |
| CN110267167A (en) * | 2019-06-14 | 2019-09-20 | 歌尔股份有限公司 | A kind of vibrating diaphragm and sounding device of sounding device |
| CN110691306A (en) * | 2019-09-29 | 2020-01-14 | 歌尔科技有限公司 | A conducting film and sound generating mechanism for sound generating mechanism |
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