WO2015103731A1 - 一种扬声器膜片及装配有该膜片的扬声器 - Google Patents

一种扬声器膜片及装配有该膜片的扬声器 Download PDF

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Publication number
WO2015103731A1
WO2015103731A1 PCT/CN2014/070229 CN2014070229W WO2015103731A1 WO 2015103731 A1 WO2015103731 A1 WO 2015103731A1 CN 2014070229 W CN2014070229 W CN 2014070229W WO 2015103731 A1 WO2015103731 A1 WO 2015103731A1
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Prior art keywords
diaphragm
polyester film
loudspeaker
film layer
speaker
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PCT/CN2014/070229
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English (en)
French (fr)
Inventor
袁信明
Original Assignee
易力声科技(深圳)有限公司
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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 US15/109,532 priority Critical patent/US20160330549A1/en
Priority to PCT/CN2014/070229 priority patent/WO2015103731A1/zh
Publication of WO2015103731A1 publication Critical patent/WO2015103731A1/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
    • H04R7/12—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
    • 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
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed
    • 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
    • H04R9/025—Magnetic circuit
    • 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
    • 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
    • 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
    • H04R7/127—Non-planar diaphragms or cones dome-shaped

Definitions

  • the utility model relates to a vibration sounding diaphragm for a loudspeaker and a loudspeaker equipped with the diaphragm.
  • the vibration of the diaphragm is driven by the magnetic field to drive the air to vibrate.
  • the coils that drive the vibration of the sound diaphragm are disposed at the bottom surface of the dome of the diaphragm. In actual use, the diaphragm often vibrates off the axis.
  • the micro-speaker diaphragm design mainly uses polyester film materials, and the polyester film materials mainly include PET, PEEK, PEN, PEI, and PAR.
  • Designers often change the shape of the diaphragm to get better acoustic performance parameters. Specifically, such as: frequency response, total harmonic distortion, F0, subjective listening experience, etc., the shape design of the diaphragm is mainly arc-shaped or a combination of several arc-shaped curves.
  • the current micro-speaker diaphragm due to the thinness of the polyester film material and the poor damping property of the material itself, the current micro-speaker diaphragm generally has problems of easy deformation and vibration deviation.
  • the technical problem to be solved by the utility model is to propose a speaker diaphragm which can solve the problem of diaphragm deformation and can have better acoustic performance parameters after application, and a speaker using the same.
  • a technical solution proposed by the present invention to solve the above technical problem is: a speaker diaphragm comprising a top portion of a center ball and a bent portion connected at a bottom edge of the top portion of the center ball, the diaphragm being sequentially stacked And compounding into a whole first polyester film layer, a polyurethane film layer and a second polyester film layer, the first polyester film layer, the polyurethane film layer and the second polyester film layer The shapes and sizes of the three are the same.
  • a speaker diaphragm comprising a center ball top and a bent portion connected at a bottom edge of the center ball top, the diaphragm being laminated And comprising a first polyester film layer and a second polyester film layer bonded by an adhesive, both of the shape and size of the first polyester film layer and the second polyester film layer the same.
  • the bending portion is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are closely arranged in a rotating divergent annular shape centering on the top of the center ball.
  • the curved portion is composed of a plurality of continuous curved curved segments.
  • first and second polyester film layers are all made of a PEEK composite film material.
  • a speaker adopting the aforementioned speaker diaphragm, and further comprises a voice coil, a washer, a magnet, a U-iron cup, a bracket, a PCB board and a tuning paper which are sequentially assembled.
  • the speaker diaphragm of the utility model is a polyester film + polyurethane film + polyester film composite material or a material formed by laminating a double-layer polyester film by glue, thereby solving the problem that the traditional speaker diaphragm film is soft and the current single sheet is gathered.
  • the ester film material has small damping defects and is not easily deformed and deflected during use.
  • FIG. 1 is a schematic structural view of a speaker diaphragm of the present invention.
  • Figure 2 is a top plan view of the structure of Figure 1.
  • FIG 3 is a schematic view showing the layered structure of the speaker diaphragm in the first embodiment.
  • FIG 4 is a schematic view showing the layered structure of the speaker diaphragm in the second embodiment.
  • Figure 5 is a schematic cross-sectional view of the speaker of the present invention.
  • Figure 6 is a structural exploded view of the speaker of the present invention.
  • the speaker diaphragm 1 of the present embodiment includes a center ball top 1-1 and a curved portion 1 connected at the bottom edge of the center ball top 1-1. -2.
  • the speaker diaphragm 1 is composed of a first polyester film layer 98, a polyurethane film layer 101 and a second polyester film layer 99 which are sequentially laminated and laminated into a single body, a first polyester film layer 98, and a polyurethane.
  • the shape and size of the diaphragm layer 101 and the second polyester film layer 99 are the same. In the case of compounding, it can be compounded by a conventional bonding process or by a high temperature and high pressure.
  • the bending portion 1-2 is provided with a plurality of reinforcing ribs 1-3, and the plurality of reinforcing ribs 1-3 are closely arranged in a rotating divergent ring shape centering on the center ball top 1-1.
  • the curved portion 1-2 is only a one-piece curved structure, and it is easy to know that the curved portion 1-2 may also be composed of a plurality of continuous curved curved segments.
  • the first polyester film layer 98 and the second polyester film layer 99 are each made of a PEEK (polyether ether ketone) composite film material. It is easily conceivable that the first polyester film layer 98 and the second polyester film layer 99 may also be made of other polyester film materials.
  • This embodiment is an alternative to the first embodiment.
  • the difference between the present embodiment and the technical solution in the first embodiment is only that the structure of the speaker diaphragm 1 is different: the speaker in this embodiment
  • the diaphragm 1 is composed of a first polyester film layer 98 and a second polyester film layer 99 laminated and bonded by an adhesive 102, a first polyester film layer 98 and a second polyester film
  • the shape and size of both layers 99 are the same.
  • the speaker includes the speaker diaphragm 1 of the first embodiment, and the voice coil 2, the washer 3, and the magnet 4 are sequentially assembled.
  • the voice coil 2 is connected to the bottom of the speaker diaphragm 1; the washer 3 and the magnet 4 are integrally fixed and placed in the U-iron cup 5, and a magnetic gap is formed between the inner wall of the U-cup 5; the voice coil 2 The lower portion projects into the aforementioned magnetic gap; the U-iron cup 5 is connected to the bracket 6, and the bottom of the bracket 6 is provided with a circuit for separately controlling and adjusting, and a tuning paper 8, which is disposed on the PCB board 7.
  • the difference between this embodiment and the third embodiment is that the speaker diaphragm 1 of the first embodiment is used in the speaker of the third embodiment, and the speaker diaphragm 1 of the second embodiment is used for the speaker in the embodiment.

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

Abstract

本实用新型涉及一种扬声器膜片和使用了该膜片的扬声器，膜片是由依次层叠的并复合成一个整体的第一聚酯膜片层、聚氨酯膜片层和第二聚酯膜片层构成。另一种技术方案是：一种扬声器膜片，膜片是由层叠的并通过粘接剂粘接的第一聚酯膜片层和第二聚酯膜片层构成。扬声器除了采用了前述扬声器膜片还包括依次组装的音圈、华司片、磁铁、U铁杯、支架、PCB板和调音纸。本实用新型中的扬声器膜片为复合材料，解决了传统扬声器膜片薄膜较软和现状单张聚酯薄膜材料阻尼小的缺陷。并在膜片表面增加加强筋，使膜片在安装后的振动更平衡，得到更宽频率响应、主观听音感觉更加细腻。

Description

一种扬声器膜片及装配有该膜片的扬声器
技术领域
　　　本实用新型涉及一种扬声器用的振动发声膜片和装配使用了该膜片的扬声器。
　　　背景技术
　　　现有的扬声器均是通过线圈在磁场的作用下推动膜片振动以带动空气振动来发声，在现有的扬声器结构中，带动音膜片振动的线圈均设置在膜片的球顶底面处，在实际使用中膜片经常会偏离轴线振动。
　　　而微型扬声器膜片设计主要采用聚酯薄膜材料，聚酯薄膜材料主要有PET、PEEK、PEN、PEI、PAR这几种。设计人员经常通过改变膜片的形状设计以得到更好的各项声学性能参数。具体如：频率响应、总谐波失真、F0、主观听音感受等等，膜片的形状设计主要有弧状或者几个弧状曲线结合等。但是因为聚酯薄膜材料很薄以及材料本身阻尼性欠佳的特性，现状微型扬声器膜片普遍存在容易变形和振动跑偏的问题。
　　　实用新型内容
　　　本实用新型要解决的技术问题是：提出一种可解决膜片变形问题还能在应用后具有较好声学性能参数的扬声器膜片以及使用了这种膜片的扬声器。
　　　本实用新型为解决上述技术问题提出的一种技术方案是：一种扬声器膜片，包括中心球顶部和连接在所述中心球顶部底部边缘处的弯曲部，所述膜片是由依次层叠的并复合成一个整体的第一聚酯膜片层、聚氨酯膜片层和第二聚酯膜片层构成，所述第一聚酯膜片层、聚氨酯膜片层和第二聚酯膜片层这三者的形状、大小均相同。本实用新型为解决上述技术问题提出的另一种技术方案是：一种扬声器膜片，包括中心球顶部和连接在所述中心球顶部底部边缘处的弯曲部，所述膜片是由层叠的并通过粘接剂粘接的第一聚酯膜片层和第二聚酯膜片层构成，所述第一聚酯膜片层和第二聚酯膜片层这两者的形状、大小均相同。
　　　进一步的，所述弯曲部上设有多根加强筋，所述多根加强筋均以所述中心球顶部为中心紧密排列成旋转发散式的环形。
　　　进一步的，所述弯曲部由多段连续的弧形弯曲段构成。
　　　进一步的，所述第一、第二聚酯膜片层均是由PEEK复合膜材料制成。
　　　一种扬声器，采用了前述扬声器膜片，还包括依次组装的音圈、华司片、磁铁、U铁杯、支架、PCB板和调音纸。
　　　本实用新型的有益效果是：
　　　本实用新型中的扬声器膜片为聚酯薄膜+聚胺酯薄膜+聚酯薄膜复合材料或将双层聚酯薄膜通过胶水复合后形成的材料，解决了传统扬声器膜片薄膜较软和现状单张聚酯薄膜材料阻尼小的缺陷，在使用时不易变形和跑偏。
　　　并结合这种新扬声器膜片复合材料的特性，在膜片上增加了采用较多、较细的加强筋，使膜片在安装后的振动更平衡，得到更宽频率响应、主观听音感觉更加细腻。
　　　附图说明
　　　下面结合附图对本实用新型中的扬声器膜片及扬声器作进一步说明。
　　　图1是本实用新型中扬声器膜片的结构示意图。
　　　图2是图1中结构的俯视图。
　　　图3是实施例一中扬声器膜片的层状结构示意图。
　　　图4是实施例二中扬声器膜片的层状结构示意图。
　　　图5是本实用新型中扬声器的剖面结构示意图。
　　　图6是本实用新型中扬声器的结构爆炸图。
　　　具体实施方式
　　　实施例一
　　　根据图1、图2、图3、图5和图6所示，本实施例中扬声器膜片1，包括中心球顶部1-1和连接在中心球顶部1-1底部边缘处的弯曲部1-2。
　　　扬声器膜片1是由依次层叠的并复合成一个整体的第一聚酯膜片层98、聚氨酯膜片层101和第二聚酯膜片层99构成，第一聚酯膜片层98、聚氨酯膜片层101和第二聚酯膜片层99这三者的形状、大小均相同。在复合时，可以通过传统的粘接工艺复合，也可以通过高温高压一次压合。
　　　弯曲部1-2上设有多根加强筋1-3，多根加强筋1-3均以中心球顶部1-1为中心紧密排列成旋转发散式的环形。
　　　在本实施例中弯曲部1-2仅为一段式弧形结构，容易得知弯曲部1-2也可以是由多段连续的弧形弯曲段构成的。
　　　前述第一聚酯膜片层98和第二聚酯膜片层99均是由PEEK（聚醚醚酮）复合膜材料制成。容易想到的是第一聚酯膜片层98和第二聚酯膜片层99也可以由其他聚酯类膜材料制成。
　　　实施例二
　　　本实施例是在实施例一基础上进行的一种替换，如图4所示，本实施例与实施例一中技术方案相比区别仅在于扬声器膜片1的结构不同：本实施例中扬声器膜片1是由层叠的并通过粘接剂102粘接的第一聚酯膜片层98和第二聚酯膜片层99构成，第一聚酯膜片层98和第二聚酯膜片层99这两者的形状、大小均相同。
　　　实施例三
　　　本实施例是对实施例一中扬声器膜片1进行的应用，本实施例中扬声器除了包括实施例一中扬声器膜片1，还包括依次组装的音圈2、华司片3、磁铁4、U铁杯5、支架6、PCB板7和调音纸8。
　　　音圈2连接在扬声器膜片1的底部；华司片3与磁铁4固定成一体后放置到U铁杯5中，并与U铁杯5的内侧壁之间形成磁缝隙；音圈2的下部伸入到前述磁缝隙中；U铁杯5与支架6相连，支架6的底部设置有分别用于控制和调节的电路和调音纸8，前述电路设置在PCB板7上。
　　　实施例四
　　　本实施例与实施例三的区别在于：实施例三中扬声器采用了实施例一中的扬声器膜片1，而在本实施例中扬声器采用实施例二中的扬声器膜片1。
　　　本实用新型的不局限于上述实施例，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 (8)

  1. [根据细则26改正17.02.2015]　
    　 一种扬声器膜片，包括中心球顶部和连接在所述中心球顶部底部边缘处的弯曲部，其特征在于：所述膜片是由依次层叠的并复合成一个整体的第一聚酯膜片层、聚氨酯膜片层和第二聚酯膜片层构成，所述第一聚酯膜片层、聚氨酯膜片层和第二聚酯膜片层这三者的形状、大小均相同。
  2. [根据细则26改正17.02.2015]　
    　　　一种扬声器膜片，包括中心球顶部和连接在所述中心球顶部底部边缘处的弯曲部，其特征在于：所述膜片是由层叠的并通过粘接剂粘接的第一聚酯膜片层和第二聚酯膜片层构成，所述第一聚酯膜片层和第二聚酯膜片层这两者的形状、大小均相同。
  3. [根据细则26改正17.02.2015]　
    　　　根据权利要求1或2所述扬声器膜片，其特征在于：所述弯曲部上设有多根加强筋，所述多根加强筋均以所述中心球顶部为中心紧密排列成旋转发散式的环形。
  4. [根据细则26改正17.02.2015]　
    　　　根据权利要求1或2所述扬声器膜片，其特征在于：所述弯曲部由多段连续的弧形弯曲段构成。
  5. [根据细则26改正17.02.2015]　
    　　　根据权利要求1或2所述扬声器膜片，其特征在于：所述第一、第二聚酯膜片层均是由PEEK复合膜材料制成。
  6. [根据细则26改正17.02.2015]　
    　　　一种扬声器，其特征在于：采用了权利要求1中所述的扬声器膜片。
  7. [根据细则26改正17.02.2015]　
    　　　一种扬声器，其特征在于：采用了权利要求2中所述的扬声器膜片。
  8. [根据细则26改正17.02.2015]
    　　　根据权利要求6或7所述扬声器，其特征在于：还包括依次组装的音圈、华司片、磁铁、U铁杯、支架、PCB板和调音纸。
PCT/CN2014/070229 2014-01-07 2014-01-07 一种扬声器膜片及装配有该膜片的扬声器 WO2015103731A1 (zh)

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US15/109,532 US20160330549A1 (en) 2014-01-07 2014-01-07 Speaker Diaphragms and Speakers with the Same
PCT/CN2014/070229 WO2015103731A1 (zh) 2014-01-07 2014-01-07 一种扬声器膜片及装配有该膜片的扬声器

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Cited By (4)

* Cited by examiner, † Cited by third party
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CN107920301A (zh) * 2017-11-15 2018-04-17 宁波麦度智联科技股份有限公司 一种喇叭
WO2018081915A1 (zh) * 2016-11-01 2018-05-11 声电电子科技(惠州)有限公司 一种具有双华司结构的微型扬声器
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