WO2017143520A1 - 一种喇叭膜片 - Google Patents

一种喇叭膜片 Download PDF

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Publication number
WO2017143520A1
WO2017143520A1 PCT/CN2016/074347 CN2016074347W WO2017143520A1 WO 2017143520 A1 WO2017143520 A1 WO 2017143520A1 CN 2016074347 W CN2016074347 W CN 2016074347W WO 2017143520 A1 WO2017143520 A1 WO 2017143520A1
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WO
WIPO (PCT)
Prior art keywords
diaphragm
height
ball
dome
horn
Prior art date
Application number
PCT/CN2016/074347
Other languages
English (en)
French (fr)
Inventor
袁信明
Original Assignee
易力声科技(深圳)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 易力声科技(深圳)有限公司 filed Critical 易力声科技(深圳)有限公司
Priority to PCT/CN2016/074347 priority Critical patent/WO2017143520A1/zh
Priority to US16/079,350 priority patent/US20190069092A1/en
Publication of WO2017143520A1 publication Critical patent/WO2017143520A1/zh

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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
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
    • H04R7/125—Non-planar diaphragms or cones comprising a plurality of sections or layers comprising a plurality of 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
    • H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
    • H04R2231/001—Moulding aspects of diaphragm or surround
    • 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
    • H04R2307/021—Diaphragms comprising cellulose-like materials, e.g. wood, paper, linen
    • 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
    • H04R2307/025—Diaphragms comprising polymeric materials
    • 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
    • H04R2307/029—Diaphragms comprising fibres
    • 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
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
    • 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

Definitions

  • the utility model relates to a diaphragm on a horn.
  • the dynamic earphone is the most common and common earphone. Its driving unit is basically a small dynamic moving speaker.
  • the voice coil (diaphragm) connected to it is driven by a voice coil in a permanent magnetic field.
  • the dynamic earphones are relatively efficient, and most of them can be driven by the headphone output of the audio, and are reliable and durable.
  • the technical problem to be solved by the utility model is to propose a horn diaphragm which improves the splitting vibration at a high frequency and makes the frequency response curve smoother.
  • a horn diaphragm consisting of a ball top located at the middle portion and an outer arc portion connected to the outer side of the ball top on the outer side of the ball, characterized in that:
  • the outer diameter of the diaphragm is 38.9 mm - 39.95 mm;
  • the top of the ball has a dome height of 3.0 mm to 3.4 mm;
  • the arc top height of the outer arc portion is 1.6 mm - 1.8 mm;
  • the effective height between the top of the ball and the outer arc is 0.8 mm to 1.0 mm.
  • the surface of the outer arc portion is further provided with a ring-shaped concave pattern array centered on the center of the top of the ball, the concave line is elongated, and the root of the concave line is The angle between the line connecting the centers of the tops of the balls and the axial centerline of the ridges is between 120 and 130 degrees.
  • the membrane is made of a composite of a PAR material layer, a PU material layer and a PEEK material layer having the same shape, the membrane having a thickness of 32 u-34 u.
  • the membrane is made of a PET material.
  • the membrane is made of a PEN material.
  • the membrane is made of a PEI material.
  • the membrane is made of a PEEK material.
  • the utility model improves the overall strength of the diaphragm, reduces the medium-high frequency peaks and valleys in the frequency response curve, and improves the high frequency by increasing the effective height of the diaphragm, changing the shape of the outer arc, increasing the height of the dome and changing the shape of the pattern.
  • a layer of PU material damping material is composited between two layers of different materials (PAR layer + PEEK layer) to increase diaphragm damping.
  • Figure 1 is a side cross-sectional view showing a diaphragm of the first embodiment.
  • Fig. 2 is a comparison diagram of the frequency response curves before and after the effective high adjustment of the diaphragm in the first embodiment.
  • Figure 3 is a schematic view showing the structure of the diaphragm in the third embodiment.
  • Fig. 4 is a comparison diagram of the frequency response curve of the diaphragm before and after the adjustment of the slant angle in the third embodiment.
  • Fig. 5 is a schematic view showing the layer structure of the composite membrane in the fourth embodiment.
  • the horn diaphragm of the present invention is composed of a ball top 1 located at the center and a ring outer arc 2 connected to the outer periphery of the top of the ball.
  • the outer diameter of the diaphragm is 38.9 mm.
  • the dome height a of the ball top 1 is 3.0 mm, and the dome height a is the difference in height between the highest point of the middle of the ball top 1 and the bottom edge of the ball top 1.
  • the arc top height b of the outer arc portion 2 is 1.6 mm, and the arc top height b is the difference in height between the highest edge of the outer arc portion 2 and the outer bottom edge of the outer arc portion 2.
  • the effective height c between the ball top 1 and the outer arc portion 2 is 0.8 mm, and the effective height c is the difference in height between the outer bottom edge of the outer arc portion 2 and the bottom edge of the ball top 1.
  • the diaphragms before and after the effective high change are compared with the frequency response test, and the test results are shown in FIG. 2.
  • the A curve in FIG. 2 is the frequency response curve of the diaphragm with an effective height of 0.6 mm, and the B curve. It is the frequency response curve of the diaphragm with an effective height of 0.8 mm in this embodiment. It can be seen from Fig. 2 that as the outer arc is pulled up and the effective height is increased by 0.2 mm, the peaks and valleys at 2 to 4 KHz are significantly improved.
  • the horn diaphragm of the present invention is constituted by a ball top portion 1 located at the center and a ring outer arc portion 2 connected to the outer side of the ball top portion 1 in the circumferential direction.
  • the outer diameter of the diaphragm was 39.95 mm.
  • the dome height a of the ball top 1 is 3.4 mm.
  • the arc top height b of the outer arc portion 2 is 1.8 mm.
  • the effective height c between the ball top 1 and the outer arc 2 is 1.0 mm.
  • the embodiment is an improvement based on the first embodiment or the second embodiment:
  • the surface of the outer arc portion 2 is also provided with a ring-shaped array of concave grooves 3 centered on the center of the ball top 1, and the intaglio 3 has an elongated shape.
  • the angle between the line connecting the root of any of the indentations 3 and the center of the ball top 1 and the axial center line of the intaglio 3 is 120 degrees.
  • the angle between the line connecting the root of the ridge 3 and the center of the ball top 1 and the axial center line of the rib 3 is between 120 degrees and 130 degrees.
  • the diaphragm is made of a composite PAR material layer 4, a PU material layer 5 and a PEEK material layer 6 having a thickness of 32 u-34 u.
  • the membrane is made only of PET material.
  • the diaphragm is made only of PEN material.
  • the diaphragm is made only of PEI material.
  • the membrane is made only of PEEK material.
  • the present invention is not limited to the above embodiments, and the technical solutions of the above various embodiments of the present invention can be cross-combined with each other to form a new technical solution, and the technical solutions formed by the equivalent replacement are all required by the present invention.
  • the technical solutions formed by the equivalent replacement are all required by the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

本实用新型涉及一种喇叭膜片，是由位于中部的球顶部和连接在所述球顶部外侧周向上的一圈外弧部构成，所述膜片的外径为38.9mm-39.95mm；所述球顶部的球顶高为3.0mm-3.4mm；所述外弧部的弧顶高为1.6mm-1.8mm；所述球顶部与所述外弧部之间的有效高为0.8mm-1.0mm。本实用新型通过加高膜片的有效高、改外弧形状、球顶加高及改花纹形状的方式，改善膜片整体强度，减少频响曲线中的中高频峰谷，提升高频。另外，还在两层不同材质（PAR层+PEEK层）之间复合一层PU层的阻尼材料以增加膜片阻尼。

Description

一种喇叭膜片
技术领域
本实用新型涉及一种喇叭上的膜片。
背景技术
动圈式耳机是最普通、最常见的耳机，它的驱动单元基本上就是一只小型的动圈扬声器，由处于永磁场中的音圈驱动与之相连的振膜（膜片）振动。动圈式耳机效率比较高，大多可为音响上的耳机输出驱动，且可靠耐用。
但是目前大部分40mm喇叭曲线在3~4KHz出现打折，及高频峰谷多，为膜片强度不够或欠阻尼导致。
实用新型内容
本实用新型要解决的技术问题是：提出一种改善了在高频时的分割振动，使频响曲线更顺滑的喇叭膜片。
本实用新型为解决上述技术问题提出的技术方案是：一种喇叭膜片，是由位于中部的球顶部和连接在所述球顶部外侧周一圈外弧部构成，其特征在于：
所述膜片的外径为38.9mm-39.95mm；
所述球顶部的球顶高为3.0mm-3.4mm；
所述外弧部的弧顶高为1.6mm-1.8mm；
所述球顶部与所述外弧部之间的有效高为0.8mm-1.0mm。
可作为优选的是：所述外弧部的表面还设有一圈以所述球顶部的中心为圆心的环状的凹纹阵列，所述凹纹呈长条形，所述凹纹的根部与所述球顶部中心之间的连接线与所述凸纹的轴向中心线之间的夹角为120度-130度。
可作为优选的是：所述膜片是由形状相同的PAR材料层、PU材料层和PEEK材料层复合制成，所述膜片的厚度为32u-34u。
可作为优选的是：所述膜片是由PET材料制成。
可作为优选的是：所述膜片是由PEN材料制成。
可作为优选的是：所述膜片是由PEI材料制成。
可作为优选的是：所述膜片是由PEEK材料制成。
本实用新型的有益效果是：
本实用新型通过加高膜片的有效高、改外弧形状、球顶加高及改花纹形状的方式，改善膜片整体强度，减少频响曲线中的中高频峰谷，提升高频。
另外，还在两层不同材质（PAR层+PEEK层）之间复合一层PU层的阻尼材料以增加膜片阻尼。
附图说明
下面结合附图对本实用新型的作进一步说明。
图1是实施例一中膜片的侧视剖示图。
图2是实施例一中关于膜片有效高调节前后的频响曲线对比图。
图3是实施例三中膜片的结构示意图。
图4是实施例三中关于调节凸纹倾角前后的膜片的频响曲线对比图。
图5是实施例四中复合膜片的层结构示意图。
具体实施方式
实施例一
根据图1所示，本实用新型中的喇叭膜片，是由位于中部的球顶部1和连接在球顶部外侧周的一圈外弧部2构成。
膜片的外径为38.9mm。
球顶部1的球顶高a为3.0mm，球顶高a是指球顶部1的中部最高处与球顶部1底沿之间的高度差值。
外弧部2的弧顶高b为1.6mm，弧顶高b是指外弧部2的弧顶最高处与外弧部2的外侧底沿之间的高度差值。
球顶部1与外弧部2之间的有效高c为0.8mm，有效高c是指外弧部2的外侧底沿与球顶部1底沿之间的高度差值。
在本实施例中，将有效高改变前后的膜片进行频响测试对比，测试结果如图2所示，图2中的A曲线为有效高为0.6mm的膜片的频响曲线，B曲线为本实施例中有效高为0.8mm的膜片的频响曲线。从图2中可以看出随着外弧拉高及有效高提升0.2mm，2~4KHz处的峰谷有明显改善。
实施例二
根据图1所示，本实用新型中的喇叭膜片，是由位于中部的球顶部1和连接在球顶部1外侧周向上的一圈外弧部2构成。
膜片的外径为39.95mm。
球顶部1的球顶高a为3.4mm。
外弧部2的弧顶高b为1.8mm。
球顶部1与外弧部2之间的有效高c为1.0mm。
实施例三
如图3所示，为了进一步改善膜片的频响曲线，本实施例是在实施例一或实施例二基础上进行的改进：
外弧部2的表面还设有一圈以球顶部1的中心为圆心的环状的凹纹3阵列，凹纹3呈长条形。
如图4所示，任一根凹纹3的根部与球顶部1中心之间的连接线与凹纹3的轴向中心线之间的夹角为120度。
将凸纹3倾角调节前后的膜片进行频响测试对比，测试结果如图5所示。
可以作为优选的是，凸纹3的根部与球顶部1中心之间的连接线与凸纹3的轴向中心线之间的夹角在120度-130度之间。
实施例四
在上述任一实施例的基础上，如图5所示，膜片是由形状相同的PAR材料层4、PU材料层5和PEEK材料层6复合制成，膜片的厚度为32u-34u。
可作为优选的是：膜片仅是由PET材料制成。
可作为优选的是：膜片仅是由PEN材料制成。
可作为优选的是：膜片仅是由PEI材料制成。
可作为优选的是：膜片仅是由PEEK材料制成。
本实用新型的不局限于上述实施例，本实用新型的上述各个实施例的技术方案彼此可以交叉组合形成新的技术方案，另外凡采用等同替换形成的技术方案，均落在本实用新型要求的保护范围内。

Claims (7)

  1. 一种喇叭膜片，是由位于中部的球顶部和连接在所述球顶部外侧周向上的一圈外弧部构成，其特征在于：
    所述膜片的外径为38.9mm-39.95mm；
    所述球顶部的球顶高为3.0mm-3.4mm；
    所述外弧部的弧顶高为1.6mm-1.8mm；
    所述球顶部与所述外弧部之间的有效高为0.8mm-1.0mm。
  2. 根据权利要求1所述喇叭膜片，其特征在于：所述外弧部的表面还设有一圈以所述球顶部的中心为圆心的环状的凹纹阵列，所述凹纹呈长条形，所述凹纹阵列中的任一凹纹的根部与所述球顶部中心之间的连接线与所述凸纹的轴向中心线之间的夹角均为120度-130度。
  3. 根据权利要求1或2所述喇叭膜片，其特征在于：所述膜片是由形状相同的PAR材料层、PU材料层和PEEK材料层复合制成，所述膜片的厚度为32u-34u。
  4. 根据权利要求1或2所述喇叭膜片，其特征在于：所述膜片是由PET材料制成。
  5. 根据权利要求1或2所述喇叭膜片，其特征在于：所述膜片是由PEN材料制成。
  6. 根据权利要求1或2所述喇叭膜片，其特征在于：所述膜片是由PEI材料制成。
  7. 根据权利要求1或2所述喇叭膜片，其特征在于：所述膜片是由PEEK材料制成。
PCT/CN2016/074347 2016-02-23 2016-02-23 一种喇叭膜片 WO2017143520A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2016/074347 WO2017143520A1 (zh) 2016-02-23 2016-02-23 一种喇叭膜片
US16/079,350 US20190069092A1 (en) 2016-02-23 2016-02-23 Speaker diaphragm

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101252793A (zh) * 2007-02-21 2008-08-27 索尼株式会社 扬声器振膜和包括该扬声器振膜的扬声器
US20110135111A1 (en) * 2008-07-31 2011-06-09 Pioneer Corporation Speaker device and automobile
CN202269008U (zh) * 2011-09-22 2012-06-06 歌尔声学股份有限公司 一种动圈式发声器振动膜片
CN103686547A (zh) * 2013-12-09 2014-03-26 歌尔声学股份有限公司 一种扬声器振膜及其制造方法
WO2015015004A1 (en) * 2013-08-02 2015-02-05 Pss Belgium N.V. A loudspeaker with a helmholtz resonator
CN205545887U (zh) * 2015-12-29 2016-08-31 易力声科技(深圳)有限公司 一种喇叭膜片

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101252793A (zh) * 2007-02-21 2008-08-27 索尼株式会社 扬声器振膜和包括该扬声器振膜的扬声器
US20110135111A1 (en) * 2008-07-31 2011-06-09 Pioneer Corporation Speaker device and automobile
CN202269008U (zh) * 2011-09-22 2012-06-06 歌尔声学股份有限公司 一种动圈式发声器振动膜片
WO2015015004A1 (en) * 2013-08-02 2015-02-05 Pss Belgium N.V. A loudspeaker with a helmholtz resonator
CN103686547A (zh) * 2013-12-09 2014-03-26 歌尔声学股份有限公司 一种扬声器振膜及其制造方法
CN205545887U (zh) * 2015-12-29 2016-08-31 易力声科技(深圳)有限公司 一种喇叭膜片

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