WO2016169248A1 - 一种振膜复合层及其制造方法 - Google Patents

一种振膜复合层及其制造方法 Download PDF

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Publication number
WO2016169248A1
WO2016169248A1 PCT/CN2015/094539 CN2015094539W WO2016169248A1 WO 2016169248 A1 WO2016169248 A1 WO 2016169248A1 CN 2015094539 W CN2015094539 W CN 2015094539W WO 2016169248 A1 WO2016169248 A1 WO 2016169248A1
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composite layer
styrofoam
diaphragm composite
carrier
diaphragm
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PCT/CN2015/094539
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English (en)
French (fr)
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蔡晓东
赵国栋
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歌尔声学股份有限公司
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Publication of WO2016169248A1 publication Critical patent/WO2016169248A1/zh

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    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor

Definitions

  • the invention relates to the field of electroacoustic technology, in particular to designing a diaphragm composite layer and a manufacturing method thereof.
  • the diaphragm is the core component of acoustic devices such as speakers, which directly determines the acoustic performance of acoustic devices such as speakers, and the industry's performance requirements are also increasing.
  • the existing diaphragm is usually provided with a rigid composite layer.
  • the ideal state requires that the composite layer is light in weight and large in rigidity.
  • the prior art composite layer is usually a multi-layer structure, including a plurality of layers, each of which is provided with a foaming material, and the carrier and the foamed material are bonded by a rubber coating. fixed.
  • the composite layer of the existing structure is required to be coated with a fixed carrier and a foamed material during the manufacturing process, and the manufacturing process is complicated.
  • the simplest two-layer carrier composite layer needs to be coated twice by fixing the two layers of the carrier and the foamed material.
  • the colloid which is equivalent to a five-layer structure, has a complicated structure, and the setting of the bonding gel affects the acoustic performance of the composite layer.
  • the technical problem to be solved by the present invention is to provide a diaphragm composite layer with a simple structure and a simple manufacturing method, and a method for manufacturing a diaphragm composite layer with simple steps and high production efficiency.
  • a diaphragm composite layer and comprising: a multilayer carrier, disposed between two adjacent carriers There is styrofoam.
  • the styrofoam is a polyurethane.
  • each layer of the carrier has a thickness of more than 0.001 mm.
  • the styrofoam thickness is greater than 0.05 mm.
  • the multilayer carrier is one or more of Al, Cu or magnesium aluminum alloy.
  • the multilayer carrier is one or more of PEN, PEI, PI or PEEK.
  • the invention also provides a method for manufacturing the diaphragm composite layer comprising the following steps:
  • the styrofoam After drying, the styrofoam is solidified and cut into shape.
  • the styrofoam preparation method is: filling a polyurethane prepolymer, a foaming agent, a catalyst, a crosslinking agent, etc. into a high pressure resistant iron can, and filling Install a gas such as propane.
  • each of the two layers of the carrier is coated with a styrofoam.
  • the styrofoam thickness is greater than 0.05 mm.
  • a styrofoam is disposed between the carriers, and the styrofoam is a rubber having a foaming property and a bonding property, and the bonding property of the styrofoam itself fixes the adjacent carrier and foams
  • the foaming properties of the glue provide the function of a foamed material between the carriers.
  • the diaphragm composite layer of the invention has a simple structure, and does not need to be separately provided with a colloid to bond and fix the carrier and the foaming material, thereby reducing the thickness of the composite layer occupied by the colloid, and adjusting the thickness of the carrier and the styrofoam according to actual needs to obtain a specific thickness. Diaphragm composite layer.
  • the method for manufacturing the diaphragm composite layer of the present invention utilizes the characteristics of the styrofoam itself, omitting the step of coating the colloid between the foam and the carrier by the conventional method, and the process is simple and the growth is reduced. Production cost.
  • Figure 1 is a cross-sectional view showing a specific embodiment of a diaphragm composite layer of the present invention
  • FIG. 2 is a schematic view showing the process flow of the method for manufacturing the diaphragm composite layer of the present invention.
  • the diaphragm composite layer of the present embodiment includes two layers of carriers: a first carrier 11 and a second carrier 12, between which a styrofoam 2 is disposed, and the styrofoam 2 will be the first carrier 11 and the first
  • the two carriers 12 are fixedly bonded.
  • the styrofoam 2 has adhesive properties, and the first carrier 11 and the second carrier 12 can be bonded and fixed together.
  • the styrofoam 2 has a foaming property, and after being cured, it has a foaming structure and is disposed on the first carrier 11 Between the second carrier 12 and the second carrier 12 functions as a foaming material.
  • the carrier may be a plurality of layers, between each two layers of carriers.
  • the styrofoam can be arranged to reflect the design idea of the diaphragm composite layer of the invention.
  • the diaphragm composite layer of the invention fixes the carrier by the styrofoam, utilizes the foaming property and the bonding property of the styrofoam, thereby improving the firmness of the combination of the carrier and the foaming material, and simplifies the structure of the diaphragm composite layer and reduces
  • the production cost of the diaphragm composite layer no colloid is provided between the carrier and the foaming material, thereby avoiding the thickness of the diaphragm composite layer occupied by the colloid, and the thickness of the composite layer can be adjusted according to actual needs under the premise of ensuring acoustic performance, thereby avoiding The influence of the colloid on the thickness of the diaphragm composite layer improves the flexibility of the diaphragm composite layer design.
  • the styrofoam 2 may be a polyurethane material.
  • the carrier thickness may be any thickness greater than 0.001 mm to ensure rigidity.
  • the thickness of the styrofoam should be greater than 0.05 mm.
  • the carrier material may be one or a combination of Al, Cu, magnesium aluminum alloy, PEN, PEI, PI or PEEK, and different carriers of the same diaphragm composite layer may be the same material, It can be different materials, and does not affect the advantages of the diaphragm composite layer of the present invention.
  • the manufacturing method of the diaphragm composite layer of this embodiment has the following steps:
  • the preparation method of the styrofoam is: filling a polyurethane prepolymer, a foaming agent, a catalyst, a crosslinking agent, etc. into a high pressure resistant iron pipe, and filling a gas such as propane.
  • each layer of the carrier is coated with a styrofoam.
  • the thickness of the coated styrofoam is greater than 0.05 mm.
  • the carriers are bonded by the styrofoam, and it is not necessary to apply the colloid or the double-sided adhesive, which simplifies the production process, improves the production efficiency, omits the adhesive colloid, and reduces the production cost.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Multimedia (AREA)
  • Laminated Bodies (AREA)

Abstract

本发明公开了一种振膜复合层，包括多层载体，相邻两层载体之间设置有发泡胶；及该振膜复合层的制造方法。本发明的振膜复合层，载体之间通过发泡胶粘接固定，并且发泡胶起到发泡材料的作用。本发明的振膜复合层，结构简单，设计灵活，其制造方法简单，简化了振膜复合层的生产工艺，提高生产效率，降低生产成本。

Description

一种振膜复合层及其制造方法 技术领域
本发明涉及电声技术领域，尤其设计一种振膜复合层及其制造方法。
背景技术
随着市场需求的不断提高，手机逐渐向薄型化方向发展，而且要求其声音质量越来越好，这就要求手机中的声学器件向着小型、薄型、高音质方向发展。振膜是扬声器等声学器件的核心部件，直接决定了扬声器等声学器件的声学性能，业界对其性能的要求也越来越高。
为了改善振膜的声学性能，防止振膜在高频段产生分割振动，现有的振膜通常设置有刚性的复合层。理想状态要求复合层重量轻且刚性较大，现有技术的复合层通常为多层结构，包括多层载体，每层载体之间设置有发泡材料，载体与发泡材料通过涂胶粘接固定。现有结构的复合层，制造过程中要涂胶粘接固定载体与发泡材料，制造工艺复杂，最简单的两层载体的复合层，将两层载体与发泡材料固定需要涂覆两遍胶体，相当于五层结构，结构复杂，且粘接胶体的设置影响了复合层的声学性能。
因此，有必要提供一种改进，以克服现有结构复合层的缺陷，并提供一种简化的复合层制造方法。
发明内容
本发明所要解决的技术问题是提供一种结构简单，制造方法简单的振膜复合层，以及步骤简单，生产效率高的振膜复合层制造方法。
为了实现上述目的，本发明采用以下技术方案：
一种振膜复合层，并且：包括多层载体，相邻两层载体之间设置 有发泡胶。
作为一种优选的技术方案，所述发泡胶为聚氨酯。
作为一种优选的技术方案，每层载体厚度大于0.001mm。
作为一种优选的技术方案，所述发泡胶厚度大于0.05mm。
作为一种优选的技术方案，所述多层载体为Al、Cu或镁铝合金中的一种或几种。
作为另一种优选的技术方案，所述多层载体为PEN、PEI、PI或PEEK中的一种或几种。
本发明还提供了该振膜复合层的制造方法：包括以下步骤：
a.准备发泡胶；
b.在一层载体表面均匀涂布发泡胶，将另一层载体覆盖于所述发泡胶上；
c.待干燥、发泡胶凝固后，裁切成型。
作为一种优选的技术方案，所述步骤a中，所述发泡胶准备方法为：将聚氨酯预聚体、发泡剂﹑催化剂、交联剂等填装到耐高压铁罐中，并填装丙烷等气体。
作为一种优选的技术方案，在步骤b中，每两层载体之间均涂布有发泡胶。
作为一种进一步优选的技术方案，所述发泡胶厚度大于0.05mm。
本发明的振膜复合层，载体之间设置有发泡胶，发泡胶是一种发泡特性和粘结特性的胶，发泡胶本身的粘结特性将相邻的载体固定，发泡胶的发泡特性使之具备载体之间发泡材料的作用。本发明的振膜复合层，结构简单，不必单独设置胶体将载体与发泡材料粘结固定，降低胶体占用的复合层厚度，可以根据实际需要调整载体和发泡胶厚度，以得到特定厚度的振膜复合层。
本发明的振膜复合层的制造方法，利用发泡胶本身特性，省略了传统方法在发泡体与载体之间涂覆胶体的步骤，工艺简单，降低了生 产成本。
附图说明
图1为本发明振膜复合层具体实施方式剖视图；
图2为本发明振膜复合层制造方法工艺流程示意图。
具体实施方式
下面结合附图，详细说明本发明内容：
如图1所示，本实施例的振膜复合层包括两层载体：第一载体11和第二载体12，载体之间设置有发泡胶2，发泡胶2将第一载体11和第二载体12固定结合。发泡胶2为具有粘接特性，可以将第一载体11和第二载体12粘接固定在一起，发泡胶2具有发泡特性，其固化后呈发泡结构，设置于第一载体11和第二载体12之间，起到发泡材料的作用。图1所示的仅为本发明振膜复合层的一个具体实施方式，目的为揭示本发明振膜复合层的设计思路，在实际应用过程中，载体可以为多层，每两层载体之间设置发泡胶，均可体现本发明振膜复合层的设计思路。本发明的振膜复合层，通过发泡胶固定载体，利用发泡胶发泡特性和粘结特性，即提高了载体与发泡材料结合的牢固程度，又简化了振膜复合层结构，降低了振膜复合层的生产成本；载体与发泡材料之间不设置胶体，避免了胶体占用的振膜复合层厚度，可以根据实际需要，在保证声学性能的前提下调整复合层的厚度，避免胶体对振膜复合层厚度的影响，提高振膜复合层设计的灵活性。
在实际应用中，发泡胶2可以为聚氨酯材料。
为了保证振膜复合层的声学性能，在实际应用中，载体厚度可以为大于0.001mm的任一厚度，以保证刚性。
在实际应用中，为了满足发泡性能及粘接性能，发泡胶的厚度应大于0.05mm。
为了保证振膜复合层刚性，载体材料可以为Al、Cu、镁铝合金、PEN、PEI、PI或PEEK中的一种或集中，并且同一振膜复合层的不同载体可以为同一种材料，也可以为不同材质，均不影响本发明振膜复合层的优点体现。
如图2所示，本实施例的振膜复合层的制造方法，步骤为：
a.准备发泡胶；同时准备第一载体11；
b.在第一载体11表面均匀涂布发泡胶2，将第二载体12覆盖于发泡胶2上；
c.待发泡胶干燥、凝固后，裁切成型。
其中，发泡胶的制备方法为：将聚氨酯预聚体、发泡剂、催化剂、交联剂等填装到耐高压铁管中，并填装丙烷等气体。
在实际应用中，若有多层载体，每两层载体之间均涂布有发泡胶。
涂布的发泡胶厚度大于0.05mm。
本发明振膜复合层的制造方法，载体之间通过发泡胶粘接，不必涂覆胶体或粘接双面胶，简化了生产工艺，提高了生产效率，省略粘接胶体，降低生产成本。
以上仅为本发明实施案例而已，并不用于限制本发明，但凡本领域普通技术人员根据本发明所揭示内容所作的等效修饰或变化，皆应纳入权利要求书中记载的保护范围内。

Claims (10)

  1. 一种振膜复合层，其特征在于：包括多层载体，相邻两层载体之间设置有发泡胶。
  2. 根据权利要求1所述的振膜复合层，其特征在于：所述发泡胶为聚氨酯。
  3. 根据权利要求1所述的振膜复合层，其特征在于：每层载体厚度大于0.001mm。
  4. 根据权利要求1所述的振膜复合层，其特征在于：所述发泡胶厚度大于0.05mm。
  5. 根据权利要求1至4任一权利要求所述的振膜复合层，其特征在于：所述多层载体为Al、Cu或镁铝合金中的一种或几种。
  6. 根据权利要求1至4任一权利要求所述的振膜复合层，其特征在于：所述多层载体为PEN、PEI、PI或PEEK中的一种或几种。
  7. 一种振膜复合层的制造方法，其特征在于，包括以下步骤：
    a.准备发泡胶；
    b.在一层载体表面均匀涂布发泡胶，将另一层载体覆盖于所述发泡胶上；
    c.待干燥、发泡胶凝固后，裁切成型。
  8. 根据权利要求7所述的振膜复合层的制造方法，其特征在于：所述步骤a中，所述发泡胶准备方法为：将聚氨酯预聚体、发泡剂﹑催化剂、交联剂等填装到耐高压铁罐中，并填装丙烷等气体。
  9. 根据权利要求7所述的振膜复合层的制造方法，其特征在于：在步骤b中，每两层载体之间均涂布有发泡胶。
  10. 根据权利要求7或9所述的振膜复合层的制造方法，其特征在于：所述发泡胶厚度大于0.05mm。
PCT/CN2015/094539 2015-04-20 2015-11-13 一种振膜复合层及其制造方法 WO2016169248A1 (zh)

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CN112911468A (zh) * 2020-12-11 2021-06-04 苏州索迩电子技术有限公司 一种骨传导发声装置及可穿戴设备

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CN104811870A (zh) * 2015-04-20 2015-07-29 歌尔声学股份有限公司 一种振膜复合层及其制造方法
CN110351637A (zh) * 2019-06-25 2019-10-18 歌尔股份有限公司 用于发声装置的补强部、振动板以及发声装置
CN110948988B (zh) * 2019-11-05 2022-04-01 浙江旗声电子科技股份有限公司 一种扬声器用膜片材料及其制备方法
CN111935601B (zh) * 2020-09-23 2021-01-22 歌尔股份有限公司 一种发声装置的复合振膜及其制备方法、发声装置

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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
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