WO2015021852A1 - 一种复合音膜 - Google Patents

一种复合音膜 Download PDF

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Publication number
WO2015021852A1
WO2015021852A1 PCT/CN2014/082866 CN2014082866W WO2015021852A1 WO 2015021852 A1 WO2015021852 A1 WO 2015021852A1 CN 2014082866 W CN2014082866 W CN 2014082866W WO 2015021852 A1 WO2015021852 A1 WO 2015021852A1
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WO
WIPO (PCT)
Prior art keywords
composite sound
low frequency
dome
diaphragm
frequency vibration
Prior art date
Application number
PCT/CN2014/082866
Other languages
English (en)
French (fr)
Inventor
廖朝红
Original Assignee
Liao Chaohong
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 Liao Chaohong filed Critical Liao Chaohong
Publication of WO2015021852A1 publication Critical patent/WO2015021852A1/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
    • 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 invention belongs to the field of diaphragms in earphone speakers, in particular to a composite sound film.
  • the diaphragm in the earphone speaker mainly uses materials such as PEI, PET, PAR, PPS, etc., and none of them can satisfy the above sound requirements.
  • the conventional horn diaphragm is produced by hot pressing only one film material. This diaphragm consists mainly of a central dome and a folding ring placed around the dome.
  • the present invention is directed to the deficiencies of the prior art, and provides a composite sound film; which solves the problems of the traditional material of the diaphragm and the single layer property, resulting in poor sound performance and wide frequency band.
  • a composite sound film of the present invention mainly comprises a diaphragm body, wherein the diaphragm body is a polyurethane substrate structure; the diaphragm body is folded by a dome of the high frequency vibration part and a low frequency vibration part.
  • the ring is configured such that the folded ring is disposed around the top of the ball; and at least one auxiliary film is compounded on the top of the ball.
  • the polyurethane is commonly known as PU, and the material of the auxiliary film can use a relatively strong and light material such as PEI, PET, PAR, PPS.
  • the auxiliary film may be one layer or two or more layers.
  • the folding ring and the dome are integrally formed.
  • the lower end surface of the folding ring has a spherical structure.
  • the lower end surface of the dome is a spherical structure.
  • the auxiliary film is disposed on the lower end surface of the dome.
  • PU Compared with traditional materials such as PET, PU is softer and more environmentally friendly. It is made into a diaphragm body of the same specification, and its high frequency is finer and brighter, and the low frequency is full.
  • the invention adopts polyurethane (PU) as the main material of the diaphragm body, and can satisfy the requirement of low frequency vibration for the folding ring of the low frequency vibration part; and the requirement of high frequency to the high strength of the dome,
  • the invention combines one or more layers of PET and other conventional materials with relatively large strength and lightness at the top of the ball, thereby taking into consideration the high frequency and low frequency, thereby widening the frequency band, and the tri-band is balanced and the sound quality is improved. This structure is simple and practical.
  • FIG. 1 is a schematic cross-sectional structural view of a conventional diaphragm body
  • Figure 2 is a schematic cross-sectional view of the present invention.
  • 11 is the dome
  • 12 is the folding ring
  • 21 is the dome
  • 22 is the folding ring
  • 23 is the auxiliary film.
  • a conventional diaphragm body is mainly composed of a central dome 11 and a folding ring 12 disposed around the dome 11, and the diaphragm mainly uses PEI and PET. , PAR, PPS and other materials, and are only made by hot pressing of a film material.
  • the traditional practice is to use a thin and soft diaphragm to meet the low frequency, so the high frequency is not bright enough and the earphone sound is not good.
  • a composite sound film according to an embodiment of the present invention mainly includes a diaphragm body, and the diaphragm body is a polyurethane substrate structure;
  • the dome 21 of the high-frequency vibration portion and the folding ring 22 of the low-frequency vibration portion are disposed, and the folding ring 22 is disposed around the dome 21; and a layer of the auxiliary film 23 is further laminated on the lower end surface of the dome 21,
  • the auxiliary film 23 is made of a PET material.
  • the polyurethane is commonly referred to as PU, and the material of the auxiliary film 23 can be used not only as PET but also conventionally strong and light materials such as PEI, PAR, and PPS.
  • the auxiliary film 23 may be one layer or two or more layers.
  • the folded ring 22 and the dome 21 are integrally formed; and the lower end faces of the folded ring 22 and the dome 21 are spherical structures.
  • PU is softer and more environmentally friendly, and is made into a diaphragm body of the same specification, and its high frequency is finer and brighter, and the low frequency is full.
  • the invention adopts polyurethane (PU) as the main material of the diaphragm body, and can satisfy the requirement of low frequency vibration for the folding ring 22 of the low frequency vibration part; and the demand for high strength of the dome 21 for high frequency.
  • the present invention combines a relatively high-strength and light PET material at the dome 21 to balance the high frequency and low frequency, thereby widening the frequency band, and the tri-band is balanced to improve the sound quality. This structure is simple and practical.

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

Abstract

本发明属于耳机喇叭中的振膜领域，具体是一种复合音膜；其特征在于：主要包括一振膜体，所述振膜体为聚氨基甲酸脂基材结构；该振膜体由高频振部的球顶以及低频振部的折环构成，所述折环置设于球顶的周围；并且，在球顶上还复合有至少一层的辅助膜。本发明采用聚氨基甲酸酯作为振膜体的基本材料，其对低频振部的折环来说可以满足其低频振动的要求；而针对高频对球顶强度大的需求，本发明在球顶处复合一层或多层PET等传统强度比较大而且轻的材料，从而兼顾高频和低频，进而拓宽了频带，三频得到了平衡，改善了音质。此结构简单，实用性强。

Description

一种复合音膜
技术领域
本发明属于耳机喇叭中的振膜领域，具体是一种复合音膜。
背景技术
耳机对其喇叭的声音要求音质好、音色纯正、低音丰满并下潜深、中高音明亮等要求。但耳机后腔空间小，其喇叭不能发挥最佳性能，低频部分失真严重。目前耳机喇叭中的振膜主要使用PEI、PET、PAR、PPS等材料，它们都不能满足上述声音要求。另外，目前传统的喇叭振膜都只用一种薄膜材料热压制作而成。这种振膜主要由中心的球顶和设于球顶周围的折环组成。球顶刚性强度越好，对应高频的延伸则越好，也越宽广；折环顺性柔和度越高，对应低频下潜则越深。因此，单层薄膜难以兼顾高低频的声音要求。通常情况下，传统做法一般是采用薄而柔和的振膜来满足低频，因而高频则显得不够明亮纤细，耳机声音因此才表现欠佳。
发明内容
本发明针对现有技术的不足，提供一种复合音膜；其解决了振膜传统材料和单层性的原因而导致声音表现欠佳、频带不够宽等问题。
为了达到上述目的，本发明一种复合音膜，主要包括一振膜体，所述振膜体为聚氨基甲酸脂基材结构；该振膜体由高频振部的球顶以及低频振部的折环构成，所述折环置设于球顶的周围；并且，在球顶上还复合有至少一层的辅助膜。
所述聚氨基甲酸脂俗称PU，而辅助膜的材料则可以使用PEI、PET、PAR、PPS等传统强度比较大而且轻的材料。该辅助膜可以是一层，也可以是两层或者多层。
优选地，所述折环与球顶为一体成型结构。
优选地，所述折环的下端面为球面状结构。
优选地，所述球顶的下端面为球面状结构。
优选地，所述辅助膜置设于球顶的下端面上。
相对于PET等传统材料，PU更为柔软、环保，制作成同样规格的振膜体，其高频更纤细明亮，低频丰满。本发明采用聚氨基甲酸酯（PU）作为振膜体的主要材料，其对低频振部的折环来说可以满足其低频振动的要求；而针对高频对球顶强度大的需求，本发明在球顶处复合一层或多层PET等传统强度比较大而且轻的材料，从而兼顾高频和低频，进而拓宽了频带，三频得到了平衡，改善了音质。此结构简单，实用性强。
附图说明
图1为传统振膜体的剖面结构示意图；
图2为本发明的剖面结构示意图。
其中，11为球顶，12为折环，21为球顶，22为折环，23为辅助膜。
具体实施方式
以下结合附图和具体实施例对本发明进行详细描述，但不做为对本发明的限定。
图1为传统振膜体的剖面结构示意图，参照图1，传统的振膜体主要由中心的球顶11和设于球顶11周围的折环12组成，该振膜体主要使用PEI、PET、PAR、PPS等材料，并且都只用一种薄膜材料热压制作而成。球顶11刚性强度越好，对应高频的延伸则越好，也越宽广；折环12顺性柔和度越高，对应低频下潜则越深。因此，单层薄膜难以兼顾高低频的声音要求。通常情况下，传统做法一般是采用薄而柔和的振膜来满足低频，因而高频则显得不够明亮纤细，耳机声音因此才表现欠佳。
图2为本发明的剖面结构示意图，参照图2，本发明实施例一种复合音膜，主要包括一振膜体，所述振膜体为聚氨基甲酸脂基材结构；该振膜体由高频振部的球顶21以及低频振部的折环22构成，所述折环22置设于球顶21的周围；并且，在球顶21的下端面上还复合有一层的辅助膜23，该辅助膜23由PET材料制作。
所述聚氨基甲酸脂俗称PU，而辅助膜23的材料不但可以使用PET，还可以使用PEI、PAR、PPS等传统强度比较大而且轻的材料。当然，该辅助膜23可以是一层，也可以是两层或者多层。
参照图2，所述折环22与球顶21为一体成型结构；并且，所述折环22和球顶21的下端面都为球面状结构。
对比图1和图2，相对于PET等传统材料，PU更为柔软、环保，制作成同样规格的振膜体，其高频更纤细明亮，低频丰满。本发明采用聚氨基甲酸酯（PU）作为振膜体的主要材料，其对低频振部的折环22来说可以满足其低频振动的要求；而针对高频对球顶21强度大的需求，本发明在球顶21处复合一层强度比较大而且轻的PET材料，从而兼顾高频和低频，进而拓宽了频带，三频得到了平衡，改善了音质。此结构简单，实用性强。
以上已将本发明做一详细说明，但显而易见，本领域的技术人员可以进行各种改变和改进，而不背离所附权利要求书所限定的本发明的范围。

Claims (5)

  1. 一种复合音膜，其特征在于：主要包括一振膜体，所述振膜体为聚氨基甲酸脂基材结构；该振膜体由高频振部的球顶以及低频振部的折环构成，所述折环置设于球顶的周围；并且，在球顶上还复合有至少一层的辅助膜。
  2. 根据权利要求1所述的一种复合音膜，其特征在于：所述折环与球顶为一体成型结构。
  3. 根据权利要求1所述的一种复合音膜，其特征在于：所述折环的下端面为球面状结构。
  4. 根据权利要求1所述的一种复合音膜，其特征在于：所述球顶的下端面为球面状结构。
  5. 根据权利要求1所述的一种复合音膜，其特征在于：所述辅助膜置设于球顶的下端面上。
PCT/CN2014/082866 2013-08-15 2014-07-24 一种复合音膜 WO2015021852A1 (zh)

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203457313U (zh) * 2013-08-15 2014-02-26 廖朝红 一种复合音膜
TWI477159B (zh) * 2014-05-27 2015-03-11 Cotron Corp 振動元件
CN104320741B (zh) * 2014-10-22 2018-11-02 李亚宁 带有石墨烯复合音膜的音频装置
CN106851499A (zh) * 2017-01-12 2017-06-13 瑞声科技(新加坡)有限公司 振膜及其制备方法以及使用该振膜的电声器件
CN114105667B (zh) * 2020-08-28 2023-04-11 常州驰科光电科技有限公司 一种球顶材料及其制备方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201042072Y (zh) * 2007-06-06 2008-03-26 瑞声声学科技(常州)有限公司 微型发声器件的复合振膜
CN202873042U (zh) * 2012-09-26 2013-04-10 瑞声光电科技(常州)有限公司 复合振膜及应用所述复合振膜的扬声器
CN203457313U (zh) * 2013-08-15 2014-02-26 廖朝红 一种复合音膜

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201042072Y (zh) * 2007-06-06 2008-03-26 瑞声声学科技(常州)有限公司 微型发声器件的复合振膜
CN202873042U (zh) * 2012-09-26 2013-04-10 瑞声光电科技(常州)有限公司 复合振膜及应用所述复合振膜的扬声器
CN203457313U (zh) * 2013-08-15 2014-02-26 廖朝红 一种复合音膜

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