WO2022068012A1 - Membrane et dispositif de production de son - Google Patents

Membrane et dispositif de production de son Download PDF

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Publication number
WO2022068012A1
WO2022068012A1 PCT/CN2020/129789 CN2020129789W WO2022068012A1 WO 2022068012 A1 WO2022068012 A1 WO 2022068012A1 CN 2020129789 W CN2020129789 W CN 2020129789W WO 2022068012 A1 WO2022068012 A1 WO 2022068012A1
Authority
WO
WIPO (PCT)
Prior art keywords
base material
adhesive layer
material layer
layer
diaphragm
Prior art date
Application number
PCT/CN2020/129789
Other languages
English (en)
Chinese (zh)
Inventor
令狐荣林
章统
肖波
孔晨亮
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声光电科技(常州)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 瑞声声学科技(深圳)有限公司, 瑞声光电科技(常州)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022068012A1 publication Critical patent/WO2022068012A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the invention relates to the field of electro-acoustic conversion, in particular to a vibrating film and a sound-emitting device used in portable electronic products.
  • the sound-generating device includes a diaphragm for vibrating and producing sound, and the acoustic performance of the diaphragm is an important performance of the sound-generating device.
  • the vibrating film of the related art includes an adhesive layer, and a first base material layer and a second base material layer which are respectively pasted and fixed on opposite sides of the adhesive layer.
  • the sequentially stacked first base material layer, adhesive layer and second base material layer of the diaphragm form a composite structure material, and the composite structure can withstand extreme working conditions (such as high temperature, low temperature, vibration, etc.) large amplitude) there is a risk of interlayer separation, making the diaphragm less reliable.
  • the elastic modulus of the first base material layer and the elastic modulus of the second base material layer are both much larger than the elastic modulus of the adhesive layer, the damping characteristics of the first base material layer and the damping characteristics of the second base material layer However, the characteristics are far less than the damping characteristics of the adhesive layer, which makes the performance of the diaphragm material change drastically along the thickness direction, the diaphragm material is nonlinear, and the amplitude is asymmetric when the diaphragm vibrates, so that the distortion of the sound-emitting device is high. , so that the acoustic performance of the sound-emitting device cannot achieve the desired effect.
  • the purpose of the present invention is to provide a diaphragm with small difference in material properties of each layer, weak material nonlinearity, high reliability, and a sound-emitting device with good acoustic performance.
  • the present invention provides a vibrating film, which comprises an adhesive layer and a first base material layer and a second base material layer which are respectively pasted and fixed on opposite sides of the adhesive layer, and the first base material is The side of the material layer and/or the second base material layer close to the adhesive layer is recessed in a direction away from the adhesive layer to form a hole, and the adhesive layer includes an adhesive layer body and a hole formed by the adhesive layer.
  • the first base material layer and the second base material layer are respectively attached to opposite sides of the adhesive layer body, and the convex posts are embedded in the holes, so as to The adhesive layer, the first base material layer and the second base material layer form an integrated structure.
  • the protrusions include a plurality of protrusions, and the plurality of protrusions are distributed in an array.
  • the holes are formed on the sides of the first base material layer and the second base material layer close to the adhesive layer, and the protruding posts include a side close to the first base material layer.
  • the first protruding post that protrudes and extends and the second protruding post that protrudes and extends from one side of the second substrate layer, each of the first protruding posts and the corresponding one of the second protruding posts are disposed on the opposite side. opposite sides of the adhesive layer body.
  • the holes penetrate through the first substrate layer and/or the second substrate layer.
  • the holes penetrate through the first base material layer and the second base material layer, and the surface of the first convex post on the side away from the adhesive layer body is away from the first base material layer body
  • the surface of the side of the adhesive layer body is flush; the surface of the second protrusion on the side away from the adhesive layer body and the surface of the second substrate layer body away from the adhesive layer body flush.
  • the diaphragm is made by liquefaction injection curing process.
  • the adhesive layer is made of any one of acrylic acid, rubber and silica gel
  • the first substrate layer is polyethylene terephthalate, polyetheretherketone, polyetherimide
  • the second base material layer is made of any one of polyethylene terephthalate, polyether ether ketone and polyether imide.
  • the present invention also provides a sound-generating device, which includes a vibration system and a magnetic circuit system that drives the vibration system to vibrate and sound, and the vibration system includes the diaphragm.
  • the vibrating membrane and the sound-emitting device of the present invention are arranged in the structure of the vibrating membrane as the first base material layer, the adhesive lamination and the second base material layer stacked in sequence, and the adhesive layer body of the adhesive layer A convex column is arranged to extend, and at the same time, the first base material layer and/or the second base material layer are concave to form a hole, and the first base material layer and the second base material layer are respectively attached to the adhesive layer.
  • the two sides of the body are opposite to each other and the protruding posts are embedded in the holes, so that the adhesive layer, the first base material layer and the second base material layer form an integrated structure.
  • this structure can improve the shear performance between the layers of the diaphragm, and the ability of the diaphragm to resist peeling and delamination is improved. , so that the reliability of the diaphragm is high; on the other hand, the difference in material properties such as elastic modulus and damping of each layer of the diaphragm is reduced, thereby reducing the nonlinearity of the material along the thickness direction and improving the amplitude symmetry of the diaphragm , the distortion of the sound-emitting device can be reduced, so that the acoustic performance of the sound-emitting device is good.
  • Fig. 1 is the three-dimensional structure schematic diagram of the vibrating film of the present invention
  • Fig. 2 is the partial three-dimensional structure exploded view of the vibrating membrane of the present invention
  • Fig. 3 is a sectional view along line A-A in Fig. 1;
  • FIG. 4 is a schematic diagram of the three-dimensional structure of the sound-emitting device of the present invention.
  • the vibrating membrane 100 includes an adhesive layer 1 and a first substrate layer 2 and a second substrate layer 3 respectively pasted and fixed on opposite sides of the adhesive layer 1 .
  • the adhesive layer 1 and the first base material layer 2 and the second base material layer 3 are respectively pasted and fixed by means of adhesive or resin curing. Of course, other adhesive fixing methods are also possible.
  • the adhesive layer 1 includes an adhesive layer body 11 and a first protruding post 121 and a second protruding post 122 extending from the adhesive layer body 11 .
  • the protruding post 12 includes a first protruding post 121 protruding from a side close to the first base material layer 2 and a second protruding post 121 extending from a side of the second base material layer 3 .
  • studs 122 .
  • the first substrate layer 2 and the second substrate layer 3 are both substrates commonly used in the art, and the specific models and parameters can be selected and used by those skilled in the art according to actual needs, and will not be described in detail here.
  • the side of the first substrate layer 2 and/or the second substrate layer 3 close to the adhesive layer 1 is recessed in a direction away from the adhesive layer 1 to form a hole 10 .
  • the holes 10 are formed on the sides of the first base material layer 2 and the second base material layer 3 close to the adhesive layer 1 .
  • the holes 10 penetrate through the first base material layer 2 and/or the second base material layer 3 .
  • the hole 10 is used to form a fixing structure with the protruding post 12 .
  • the first base material layer 2 and the second base material layer 3 are respectively attached to opposite sides of the adhesive layer body 11 so that the protruding posts 12 are embedded in the holes 10 .
  • the first protrusions 121 are embedded in the first base material layer 2
  • the second protrusions 122 are embedded in the second base material layer 3, so that the adhesive layer 1, the The first base material layer 2 and the second base material layer 3 form an integrated structure.
  • the manufacturing process of this structure is simple, and the integrated structure formed by the adhesive layer 1 , the first base material layer 2 and the second base material layer 3 is strong and reliable, so that the various layers of the diaphragm 100 are combined
  • the strength is high, and the shear performance between the layers of the diaphragm 100 is improved, and the anti-peeling and anti-delamination capabilities of the diaphragm 100 are improved, so that the reliability of the diaphragm 100 is high.
  • the first base material layer 2 wraps the first protrusions 121 and the second base material layer 3 wraps the second protrusions 122, so that the first base material layer 2
  • the difference between the elastic modulus of the second base material layer 3 and the elastic modulus of the adhesive layer 1 is reduced, and the damping characteristics of the first base material layer 2 and the first base material layer 2 are reduced.
  • the difference between the damping characteristics of the two base material layers 3 and the damping characteristics of the adhesive layer 1 is reduced, thereby reducing the nonlinearity of the material of the diaphragm 100 along the thickness direction and improving the amplitude symmetry of the diaphragm 100 .
  • the protrusions 12 include a plurality of protrusions 12 , and the protrusions 12 are distributed in an array.
  • the first protrusions 121 include a plurality of them.
  • a plurality of the first convex pillars 121 are distributed in a matrix.
  • the second protrusions 122 include a plurality of them.
  • a plurality of the second convex pillars 122 are distributed in a matrix.
  • the plurality of the first protrusions 121 and the plurality of the second protrusions 122 make the integrated structure formed by the adhesive layer 1 , the first substrate layer 2 and the second substrate layer 3 more compact. Therefore, the anti-peeling and anti-delamination capabilities of the diaphragm 100 are improved, and the uniformity of the structural material is good, and the acoustic performance of the diaphragm 100 can be improved when vibrating and producing sound.
  • each of the first protrusions 121 and a corresponding one of the second protrusions 122 are disposed on opposite sides of the adhesive layer body 11 facing each other.
  • This structure makes the central axis of one of the first convex pillars 121 and one of the second convex pillars 122 arranged along the vertical direction of the adhesive layer body 11 to be the same, so that when the diaphragm 100 vibrates and emits sound,
  • the vibration of the first base material layer 2 and the vibration of the second base material layer 3 are both synchronized with the vibration of the adhesive layer 1 , so that the diaphragm 100 has good acoustic performance when vibrating and producing sound.
  • the holes 10 penetrate through the first base material layer 2 and the second base material layer 3 .
  • the surface of the first protrusion 121 on the side away from the adhesive layer body 11 is flush with the surface of the first substrate layer body 21 on the side away from the adhesive layer body 11 .
  • the surface of the second protrusion 122 on the side away from the adhesive layer body 11 is flush with the surface of the second substrate layer body 31 on the side away from the adhesive layer body 11 .
  • the adhesive layer 1 is made of any one of acrylic, rubber and silica gel
  • the first substrate layer 2 is polyethylene terephthalate (English: Polyethylene terephthalate).
  • terephthalate, referred to as PET polyethylene terephthalate
  • PEEK poly-ether-ether-ketone
  • PEI polyetherimide
  • the second base material layer 3 is made of any one of polyethylene terephthalate PET, polyetheretherketone PEEK, and polyetherimide PEI.
  • the diaphragm 100 is made by a liquefaction injection curing process, and the liquefaction injection curing process is to inject the liquefied adhesive layer 1 into the first base material layer 2 and the second base material Between the layers 3, the holes 10 of the first base material layer 2 and the holes 10 of the second base material layer 3 are filled and then cured.
  • the adhesive layer 1 is made of acrylic.
  • the holes 10 are prefabricated in the first base material layer 2, and the holes 10 are prefabricated in the second base material layer 3.
  • the first base material layer 2 and the second base material layer 3 are spaced apart and fixed in the mold plate, and then liquid acrylic acid is poured into the space between the first base material layer 2 and the second base material layer 3 , the liquid acrylic acid with good flowability fills the mold, and the cured acrylic acid forms the adhesive layer body 11 between the first base material layer 2 and the second base material layer 3;
  • the first protrusions 121 are formed in the holes 10 of the first base material layer 2 ;
  • the second protrusions 122 are formed in the holes 10 of the second base material layer 3 by the cured acrylic acid , and at the same time, the adhesive layer 1 , the first base material layer 2 and the second base material layer 3 form an integrated structure.
  • This structure reduces the difference in material properties such as elastic modulus and damping of each layer of the diaphragm 100, thereby reducing the nonlinearity of the material along the thickness direction, improving the amplitude symmetry of the diaphragm 100, and reducing the distortion of the sound-emitting device.
  • the present invention further provides a sound-emitting device 200 .
  • the sound-generating device 200 includes a vibration system 5 and a magnetic circuit system 6 that drives the vibration system 5 to vibrate and sound.
  • the vibration system 5 includes the diaphragm 100 .
  • the sound generating device 200 further includes a basin frame 4 , and the vibration system 5 and the magnetic circuit system 6 are respectively fixed to the basin frame 4 .
  • the diaphragm 100 is fixed to the basin frame 4 . Because the difference in material properties such as elastic modulus and damping of each layer of the diaphragm 100 is reduced, the nonlinearity of the material along the thickness direction is reduced, the amplitude symmetry of the diaphragm 100 is improved, and the distortion of the sound-emitting device 200 can be reduced, thereby reducing the distortion of the sound-emitting device 200 . Therefore, the acoustic performance of the sound-emitting device 200 is good.
  • the vibrating membrane and the sound-emitting device of the present invention are arranged in the structure of the vibrating membrane as the first base material layer, the adhesive lamination and the second base material layer stacked in sequence, and the adhesive layer body of the adhesive layer A convex column is arranged to extend, and at the same time, the first base material layer and/or the second base material layer are concave to form a hole, and the first base material layer and the second base material layer are respectively attached to the adhesive layer.
  • the two sides of the body are opposite to each other and the protruding posts are embedded in the holes, so that the adhesive layer, the first base material layer and the second base material layer form an integrated structure.
  • this structure can improve the shear performance between the layers of the diaphragm, and the ability of the diaphragm to resist peeling and delamination is improved. , so that the reliability of the diaphragm is high; on the other hand, the difference in material properties such as elastic modulus and damping of each layer of the diaphragm is reduced, thereby reducing the nonlinearity of the material along the thickness direction and improving the amplitude symmetry of the diaphragm , the distortion of the sound-emitting device can be reduced, so that the acoustic performance of the sound-emitting device is good.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

L'invention concerne une membrane, qui comprend une couche adhésive et une première couche de substrat et une seconde couche de substrat qui sont fixées par adhérence sur deux côtés opposés de la couche adhésive, respectivement ; la première couche de substrat et/ou la seconde couche de substrat sont/est en retrait près d'un côté de la couche adhésive dans la direction opposée à la couche adhésive de manière à former des trous ; la couche adhésive comprend un corps de couche adhésive et des colonnes saillantes qui s'étendent de manière saillante à partir du corps de couche adhésive ; la première couche de substrat et la seconde couche de substrat sont fixées sur deux côtés opposés du corps de couche adhésive, respectivement, et permettent aux colonnes saillantes d'être encastrées dans les trous de sorte que la couche adhésive, la première couche de substrat et la seconde couche de substrat forment une structure intégrée. L'invention concerne également un dispositif de production de son dans lequel la membrane est appliquée. Par rapport à la technologie connexe, il y a peu de différence dans les caractéristiques du matériau de chaque couche de la membrane de la présente invention, la non-linéarité du matériau est faible, et la fiabilité est élevée. En outre, les performances acoustiques du dispositif de production de sons de la présente invention sont bonnes.
PCT/CN2020/129789 2020-09-29 2020-11-18 Membrane et dispositif de production de son WO2022068012A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011053258.X 2020-09-29
CN202011053258.XA CN112261548A (zh) 2020-09-29 2020-09-29 振膜及发声器件

Publications (1)

Publication Number Publication Date
WO2022068012A1 true WO2022068012A1 (fr) 2022-04-07

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PCT/CN2020/129789 WO2022068012A1 (fr) 2020-09-29 2020-11-18 Membrane et dispositif de production de son

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CN (1) CN112261548A (fr)
WO (1) WO2022068012A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1043115A (zh) * 1988-12-10 1990-06-20 钱宏诚 粘合面楔孔成型方法
CN203775395U (zh) * 2013-11-06 2014-08-13 深圳市摩码科技有限公司 扬声器用复合振膜
WO2015027715A1 (fr) * 2013-08-27 2015-03-05 歌尔声学股份有限公司 Système de vibration de haut-parleur
WO2015180289A1 (fr) * 2014-05-26 2015-12-03 歌尔声学股份有限公司 Membrane de haut-parleur
CN106792375A (zh) * 2016-12-28 2017-05-31 歌尔股份有限公司 扬声器振膜组件
CN208104277U (zh) * 2018-03-09 2018-11-16 惠州市金润佳光电科技有限公司 一种粘接力强的离型膜
CN210265409U (zh) * 2019-06-26 2020-04-07 惠州市德赛西威智能交通技术研究院有限公司 一种提高粘接强度的结构
CN111531978A (zh) * 2020-04-20 2020-08-14 深圳市航天新材科技有限公司 一种可拉伸复合振膜

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5718197A (en) * 1980-07-07 1982-01-29 Pioneer Electronic Corp Diaphragm for speaker
CN207070312U (zh) * 2017-07-03 2018-03-02 歌尔科技有限公司 用于扬声器的振膜、扬声器单体以及电子设备
CN208638645U (zh) * 2018-08-04 2019-03-22 瑞声科技(新加坡)有限公司 振膜及扬声器

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1043115A (zh) * 1988-12-10 1990-06-20 钱宏诚 粘合面楔孔成型方法
WO2015027715A1 (fr) * 2013-08-27 2015-03-05 歌尔声学股份有限公司 Système de vibration de haut-parleur
CN203775395U (zh) * 2013-11-06 2014-08-13 深圳市摩码科技有限公司 扬声器用复合振膜
WO2015180289A1 (fr) * 2014-05-26 2015-12-03 歌尔声学股份有限公司 Membrane de haut-parleur
CN106792375A (zh) * 2016-12-28 2017-05-31 歌尔股份有限公司 扬声器振膜组件
CN208104277U (zh) * 2018-03-09 2018-11-16 惠州市金润佳光电科技有限公司 一种粘接力强的离型膜
CN210265409U (zh) * 2019-06-26 2020-04-07 惠州市德赛西威智能交通技术研究院有限公司 一种提高粘接强度的结构
CN111531978A (zh) * 2020-04-20 2020-08-14 深圳市航天新材科技有限公司 一种可拉伸复合振膜

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