WO2018035720A1 - 一种振膜 - Google Patents

一种振膜 Download PDF

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Publication number
WO2018035720A1
WO2018035720A1 PCT/CN2016/096396 CN2016096396W WO2018035720A1 WO 2018035720 A1 WO2018035720 A1 WO 2018035720A1 CN 2016096396 W CN2016096396 W CN 2016096396W WO 2018035720 A1 WO2018035720 A1 WO 2018035720A1
Authority
WO
WIPO (PCT)
Prior art keywords
folding ring
folding
ring
diaphragm
width
Prior art date
Application number
PCT/CN2016/096396
Other languages
English (en)
French (fr)
Inventor
王洪波
李军
Original Assignee
深圳市音沃仕科技有限公司
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 深圳市音沃仕科技有限公司 filed Critical 深圳市音沃仕科技有限公司
Priority to PCT/CN2016/096396 priority Critical patent/WO2018035720A1/zh
Priority to US15/309,692 priority patent/US20180184207A1/en
Publication of WO2018035720A1 publication Critical patent/WO2018035720A1/zh

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
    • 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
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/207—Shape aspects of the outer suspension of loudspeaker diaphragms

Definitions

  • the present invention relates to the field of electroacoustic products, and in particular, to a diaphragm.
  • THD Total Harmonic Distortion
  • the conventional transducer mainly has two structures as shown in FIG. 1 and 2.
  • the asymmetry of the two structures in the vibration direction exacerbates the asymmetry of the stiffness curve, thereby increasing the THD. The possibility.
  • a patent application filed in the application No. 201521133832.7 discloses a diaphragm, and the invention is: providing a main folding ring reinforcing pattern area on the main folding ring, A sub-folding ring is arranged on the folding ring to reinforce the pattern area.
  • THD total harmonic distortion
  • the technical problem to be solved by the present invention is to provide a diaphragm that is advantageous for reducing THD.
  • the technical solution adopted by the present invention is: a diaphragm comprising a middle portion, a folding ring portion and an edge portion which are sequentially connected from the inside to the outside, the folding ring portion including the first folding ring and the first portion
  • the second folding ring and the second folding ring are equal in width, and the first folding ring and the second folding ring are tangential and opposite in direction.
  • the beneficial effects of the present invention are: the equal-width folding ring structure greatly reduces the asymmetry of the folding ring in the vibration direction, so that the vibration system is close to the negative direction stiffness, thereby reducing the structural non-symmetry.
  • the linearity is beneficial to reduce the THD of the transducer.
  • National Outline 1 is a schematic cross-sectional view of a prior art diaphragm
  • FIG. 2 is a schematic cross-sectional view of another diaphragm of the prior art
  • FIG. 3 is a schematic cross-sectional view of another diaphragm of the prior art
  • FIG. 4 is a perspective view of a diaphragm according to an embodiment of the present invention.
  • FIG. 5 is a schematic cross-sectional view showing the first diaphragm in a first assembly manner according to an embodiment of the present invention
  • FIG. 6 is a schematic cross-sectional view showing the first diaphragm in a second assembly manner according to an embodiment of the present invention
  • FIG. 7 is a schematic cross-sectional view showing a second diaphragm in a first assembly manner according to an embodiment of the present invention.
  • FIG. 8 is a schematic cross-sectional view showing a second diaphragm in a second assembly manner according to an embodiment of the present invention
  • FIG. 9 is a schematic cross-sectional view showing a third diaphragm installed in a first assembly manner according to an embodiment of the present invention.
  • FIG. 10 is a schematic cross-sectional view showing a third diaphragm assembled in a second assembly manner according to an embodiment of the present invention.
  • edge portion -3 [0025] edge portion -3;
  • the most critical idea of the present invention is to: set the folding ring of the folding ring portion to be equal width, and the adjacent folding ring is tangent
  • a diaphragm includes a middle portion, a loop portion and an edge portion which are sequentially connected from the inside to the outside, and the folding ring portion includes a first folding ring and a second folding ring, The first folding ring and the second folding ring are equal in width
  • the first folding ring and the second folding ring are tangent and face opposite.
  • the beneficial effects of the present invention are: the equal-width folding ring structure greatly reduces the asymmetry of the folding ring in the vibration direction, so that the vibration system is close to the negative direction, thereby reducing the stiffness of the vibration system.
  • the nonlinear characteristics of the structure are reduced, which helps to reduce the THD of the transducer.
  • the folding ring portion further includes a third folding ring, and the third folding ring is opposite to the width of the second folding ring And the third folding ring is tangent to the second folding ring and faces in opposite directions.
  • the folding ring portion further includes a fourth folding ring, the fourth folding ring is equal in width to the third folding ring, and the fourth folding ring is tangent to the third folding ring and The opposite direction.
  • the folding ring portion includes at least five folding rings, and the at least five folding rings have the same width, and the adjacent folding rings are tangential and opposite.
  • the folding ring portion may have a plurality of folding rings.
  • the folding ring section of the folding ring portion is a semi-circular ring or a semi-elliptical ring or other shapes.
  • Embodiment 1 of the present invention is as follows: As shown in FIG. 4 to FIG. 6, a diaphragm includes a middle portion 1, a loop portion 2 and an edge portion which are sequentially connected from the inside to the outside. 3, the folding ring portion 2 includes a first folding ring 21 and a second folding ring 22, and the first folding ring 21 and the second folding ring 22 have the same width (the lengths in the horizontal direction of the folding ring mouth are equal in the figure) The first folding ring 21 and the second folding ring 22 are tangent and face opposite.
  • the folded ring section of the folded ring portion 2 is a semi-circular ring or a semi-elliptical ring or other shape.
  • the folded ring cross-sectional shape of the folded ring portion 2 is a semi-annular shape.
  • the folding ring portion further includes a third folding ring, and the third folding ring is equal in width to the second folding ring, and the third folding ring is The second folded ring is tangent and faces in opposite directions.
  • the folding ring portion further includes a fourth folding ring, the fourth folding ring is equal in width to the third folding ring, and the fourth folding ring is The third fold is tangent and faces the opposite.
  • the loop portion includes at least five fold rings, the at least five loops having the same width, and the adjacent loops are tangent and opposite.
  • the diaphragm provided by the invention adopts an equal-width folding ring structure, which greatly reduces the asymmetry of the folding ring in the vibration direction, so that the vibration system is close to the negative direction in the negative direction. This reduces the nonlinear characteristics of the structure and helps to reduce the THD of the transducer.

Abstract

本发明公开了一种振膜，包括由内向外依次连接的中部、折环部和边缘部，所述折环部包括至少两个折环，所述至少两个折环的宽度相等，相邻所述折环相切且朝向相反。等宽折环结构极大消减了折环在振动方向上的非对称性，使得振动系统正向与负向的刚度接近，从而降低了结构的非线性特性，有利于减小换能器的 THD。

Description

发明名称：一种振膜
[0001] 技术领域
[0002] 本发明涉及电声产品技术领域， 特别涉及一种振膜。
[0003] ¾匕體
[0004] 随着科技不断进步， 人们对手机、 平板电脑等电子设备的设计追求越来越高， 其厚度越来越薄， 因此留给换能器的安装空间逐渐变小， 伹是人们对音质的要 求越来越高。 THD (Total Harmonic Distortion, 总谐波失真） 是评价微型换能 器性能的重要指标， 系统的非线性特性是影响 THD的主要因素， 振膜结构在振 动方向上的不对称会直接导致刚度曲线的非线性的升高， 使 THD增大， 从而使 得换能器的性能不好。
[0005] 目前， 传统的换能器主要有如图 1、 2所示的两种结构， 这两种结构在振动方向 上的非对称性会加剧刚度曲线的非对称性， 从而有使 THD增大的可能性。
[0006] 针对上述问题， 如图 3所示， 申请号为 201521133832.7的专利申请文件公幵了 一种振膜， 其发明点是： 在主折环上设置主折环补强花纹区， 在副折环上设置 副折环补强花纹区。 通过设置补强花纹区以达到降 ί氐 THD (总谐波失真）的目的 。 虽然该申请专利公幵的技术方案在一定程度上降 ί氐了 THD, 伹效果不够明显
[0007] 发明内容
[0008] 本发明所要解决的技术问题是： 提供一种有利于减小 THD的振膜。
[0009] 为了解决上述技术问题， 本发明采用的技术方案为： 一种振膜， 包括由内向外 依次连接的中部、 折环部和边缘部， 所述折环部包括第一折环和第二折环， 所 述第一折环和第二折环宽度相等， 所述第一折环和第二折环相切且朝向相反。
[0010] 本发明的有益效果在于： 等宽折环结构极大消减了折环在振动方向上的非对称 性， 使得振动系统正向与负向的刚度接近， 从而降 ί氐了结构的非线性特性， 有 利于减小换能器的 THD。
[0011] 國綱 [0012] 图 1为现有技术振膜截面示意图；
[0013] 图 2为现有技术另一种振膜截面示意图；
[0014] 图 3为现有技术另一种振膜截面示意图；
[0015] 图 4为本发明实施例一振膜立体示意图；
[0016] 图 5为本发明实施例一第一种振膜以第一种装配方式安装后截面示意图；
[0017] 图 6为本发明实施例一第一种振膜以第二种装配方式安装后截面示意图；
[0018] 图 7为本发明实施例一第二种振膜以第一种装配方式安装后截面示意图；
[0019] 图 8为本发明实施例一第二种振膜以第二种装配方式安装后截面示意图；
[0020] 图 9为本发明实施例一第三种振膜以第一种装配方式安装后截面示意图；
[0021] 图 10为本发明实施例一第三种振膜以第二种装配方式安装后截面示意图；
[0022] 标号说明：
[0023] 中部 -1;
[0024] 折环部 -2;
[0025] 边缘部 -3;
[0026] 第一折环 -21;
[0027] 第二折环 -22。
[0028] t m^
[0029] 为详细说明本发明的技术内容、 所实现目的及效果， 以下结合实施方式并配合 附图予以说明。
[0030] 本发明最关键的构思在于： 将折环部的折环设置成等宽的， 且相邻的折环相切
[0031] 请参照图 4至图 10, —种振膜， 包括由内向外依次连接的中部、 折环部和边缘 部， 所述折环部包括第一折环和第二折环， 所述第一折环和第二折环宽度相等
, 所述第一折环和第二折环相切且朝向相反。
[0032] 从上述描述可知， 本发明的有益效果在于： 等宽折环结构极大消减了折环在振 动方向上的非对称性， 使得振动系统正向与负向的刚度接近， 从而降 ί氐了结构 的非线性特性， 有利于减小换能器的 THD。
[0033] 进一步的， 所述折环部还包括第三折环， 所述第三折环与所述第二折环宽度相 等， 所述第三折环与所述第二折环相切且朝向相反。
[0034] 进一步的， 所述折环部还包括第四折环， 所述第四折环与所述第三折环宽度相 等， 所述第四折环与所述第三折环相切且朝向相反。
[0035] 进一步的， 所述折环部包括至少五个折环， 所述至少五个折环的宽度相等， 相 邻的所述折环相切且朝向相反。
[0036] 由上述描述可知， 折环部可以具有多个折环。
[0037] 进一步的， 所述折环部的折环截面是半圆环或半椭圆环或其他形状。
[0038] 实施例一
[0039] 请参照图 4至图 10, 本发明的实施例一为： 如图 4至图 6所示， 一种振膜， 包括 由内向外依次连接的中部 1、 折环部 2和边缘部 3, 所述折环部 2包括第一折环 21 和第二折环 22, 所述第一折环 21和第二折环 22宽度相等 （图中折环幵口处水平 方向上的长度相等） ， 所述第一折环 21和第二折环 22相切且朝向相反。 采用等 宽的折环结构， 极大消减了折环在振动方向上的非对称性， 使得振动系统正向 与负向的刚度接近， 从而降 ί氐了结构的非线性特性， 有利于减小换能器的 THD 。 应当理解的， 图 5和图 6所示的振膜结构相同， 使用两幅附图表示是为了说明 该振膜的装配方式有两种， 即将振膜安装在换能器上后， 振膜的第一折环的幵 口可以朝向换能器也可以背向换能器。
[0040] 所述折环部 2的折环截面是半圆环或半椭圆环或其他形状， 在本实施例中， 所 述折环部 2的折环截面形状是半圆环型的。
[0041] 进一步的， 如图 7、 图 8所示， 所述折环部还包括第三折环， 所述第三折环与所 述第二折环宽度相等， 所述第三折环与所述第二折环相切且朝向相反。 更进一 步的， 如图 9、 图 10所示， 所述折环部还包括第四折环， 所述第四折环与所述第 三折环宽度相等， 所述第四折环与所述第三折环相切且朝向相反。 作为拓展， 所述折环部包括至少五个折环， 所述至少五个折环的宽度相等， 相邻的所述折 环相切且朝向相反。
[0042] 综上所述， 本发明提供的振膜， 采用等宽的折环结构， 极大消减了折环在振动 方向上的非对称性， 使得振动系统正向与负向的刚度接近， 从而降 ί氐了结构的 非线性特性， 有利于减小换能器的 THD。 以上所述仅为本发明的实施例， 并非因此限制本发明的专利范围， 凡是利用本 发明说明书及附图内容所作的等同变换， 或直接或间接运用在相关的技术领域 , 均同理包括在本发明的专利保护范围内。
技术问题
问题的解决方案
发明的有益效果

Claims

权利要求书
[权利要求 1] 一种振膜， 包括由内向外依次连接的中部、 折环部和边缘部， 其特征 在于： 所述折环部包括第一折环和第二折环， 所述第一折环和第二折 环宽度相等， 所述第一折环和第二折环相切且朝向相反。
[权利要求 2] 根据权利要求 1所述的振膜， 其特征在于： 所述折环部还包括第三折 环， 所述第三折环与所述第二折环宽度相等， 所述第三折环与所述第 二折环相切且朝向相反。
[权利要求 3] 根据权利要求 2所述的振膜， 其特征在于： 所述折环部还包括第四折 环， 所述第四折环与所述第三折环宽度相等， 所述第四折环与所述第 三折环相切且朝向相反。
[权利要求 4] 根据权利要求 1所述的振膜， 其特征在于： 所述折环部包括至少五个 折环， 所述至少五个折环的宽度相等， 相邻的所述折环相切且朝向相 反。
[权利要求 5] 根据权利要求 1-4任一项所述的振膜， 其特征在于： 所述折环部的折 环截面是半圆环或半椭圆环或其他形状。
PCT/CN2016/096396 2016-08-23 2016-08-23 一种振膜 WO2018035720A1 (zh)

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PCT/CN2016/096396 WO2018035720A1 (zh) 2016-08-23 2016-08-23 一种振膜
US15/309,692 US20180184207A1 (en) 2016-08-23 2016-08-23 Vibrating diaphragm

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Application Number Priority Date Filing Date Title
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Cited By (2)

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US10708695B2 (en) * 2017-06-20 2020-07-07 AAC Technologies Pte. Ltd. Vibration membrane
WO2021232474A1 (zh) * 2020-05-20 2021-11-25 瑞声声学科技(深圳)有限公司 一种发声器件

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CN110324764A (zh) * 2019-07-16 2019-10-11 陈新得 一种扬声器振膜

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CN205249470U (zh) * 2015-12-30 2016-05-18 歌尔声学股份有限公司 一种振膜
CN106101941A (zh) * 2016-08-23 2016-11-09 深圳市音沃仕科技有限公司 一种振膜
CN206061116U (zh) * 2016-08-23 2017-03-29 深圳市音沃仕科技有限公司 一种振膜

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CN204929231U (zh) * 2015-09-30 2015-12-30 苏州上声电子有限公司 扬声器
CN105357615A (zh) * 2015-12-04 2016-02-24 山东共达电声股份有限公司 扬声器及其膜片
CN205123997U (zh) * 2015-12-04 2016-03-30 山东共达电声股份有限公司 扬声器及其膜片
CN205249470U (zh) * 2015-12-30 2016-05-18 歌尔声学股份有限公司 一种振膜
CN106101941A (zh) * 2016-08-23 2016-11-09 深圳市音沃仕科技有限公司 一种振膜
CN206061116U (zh) * 2016-08-23 2017-03-29 深圳市音沃仕科技有限公司 一种振膜

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10708695B2 (en) * 2017-06-20 2020-07-07 AAC Technologies Pte. Ltd. Vibration membrane
WO2021232474A1 (zh) * 2020-05-20 2021-11-25 瑞声声学科技(深圳)有限公司 一种发声器件

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