WO2021093117A1 - 一种振膜及发声装置 - Google Patents

一种振膜及发声装置 Download PDF

Info

Publication number
WO2021093117A1
WO2021093117A1 PCT/CN2019/129536 CN2019129536W WO2021093117A1 WO 2021093117 A1 WO2021093117 A1 WO 2021093117A1 CN 2019129536 W CN2019129536 W CN 2019129536W WO 2021093117 A1 WO2021093117 A1 WO 2021093117A1
Authority
WO
WIPO (PCT)
Prior art keywords
diaphragm
reinforcing rib
reinforcing ribs
reinforcing
ribs
Prior art date
Application number
PCT/CN2019/129536
Other languages
English (en)
French (fr)
Inventor
宋启龙
解志浩
王昭明
Original Assignee
歌尔股份有限公司
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 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2021093117A1 publication Critical patent/WO2021093117A1/zh

Links

Images

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
    • 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

Definitions

  • the present invention relates to the technical field of electro-acoustic conversion, and more specifically, to a diaphragm and a sound generating device.
  • speakers As a device that can convert electrical energy into sound energy, speakers have been widely used in mobile terminals such as mobile phones, computers, and pads.
  • the performance of the loudspeaker will directly affect the sound reproduction effect of the terminal device; as one of the key components of the loudspeaker's sound production, the diaphragm is one of the key components of the loudspeaker, and its quality requirements are getting higher and higher, and it is gradually developing in the direction of high intensity, high sound quality and low distortion. , And the structural requirements of the speaker diaphragm are more stringent.
  • the commonly used raw materials of polyether ether ketone in the diaphragm are mostly amorphous materials with better diaphragm forming effects.
  • the voice coil will generate heat when vibrating in the magnetic gap after being energized, in order to improve the heat resistance of the diaphragm, it is necessary to make the amorphous material Polyetheretherketone forced crystallization.
  • glass transition will occur at about 143°C.
  • the molecular chains will be rearranged, and the reconstruction of the molecular chains will cause deformation and shrinkage of the material. Due to the shrinkage during the crystallization of the amorphous polyether ether ketone, irregular wrinkles are produced after the amorphous polyether ether ketone material is crystallized.
  • the modulus of amorphous polyetheretherketone in the 0° direction and the 90° direction is very different, resulting in shrinkage in one direction, and the corresponding wrinkle texture produced after crystallization basically extends in one direction.
  • this kind of wrinkles after crystallization is not a single-layer amorphous polyether ether ketone material.
  • the entire composite diaphragm will also be produced after crystallization. Irregular folds.
  • This crystallized amorphous polyether ether ketone diaphragm produces irregular fold textures, some of the folds have enough depth to hold the glue, and some of the folds have a small depth so that the glue cannot be effectively infiltrated, which affects the amorphous polyether ether ketone.
  • the overall wetting effect will further affect the wetting effect and adhesion of the surface of the peripheral fixing part and the diaphragm supporting member, and the center part and the hard composite layer glued, resulting in the failure of waterproof and air tightness.
  • the irregular surface wrinkle texture will produce slight segmentation vibration, reducing the listening yield, thereby affecting the overall performance of the speaker.
  • An object of the present invention is to provide a new technical solution for the diaphragm and the sound generating device.
  • a diaphragm comprising at least one layer of amorphous polyetheretherketone material, which comprises:
  • a central part, the central part is located at the center of the diaphragm
  • a folded ring part, the folded ring part is arranged around the periphery of the central part;
  • a fixing part is arranged around the periphery of the folding ring part, and the fixing part is configured to be fixedly connected to a supporting member outside the diaphragm;
  • the crystallized diaphragm has folds; a plurality of first reinforcing ribs are arranged on the central part, a plurality of second reinforcing ribs are arranged on the fixing part, the first reinforcing ribs and the second reinforcing ribs
  • the extension directions of the ribs are the same, and the extension directions of the first reinforcement ribs and the second reinforcement ribs correspond to the overall extension direction of the folds;
  • the plurality of first reinforcing ribs are parallel to each other, and the plurality of second reinforcing ribs are parallel to each other.
  • first reinforcing rib and the second reinforcing rib are both convex structures or both concave structures; or one of the first reinforcing rib and the second reinforcing rib is a convex structure and the other is Recessed structure.
  • the width of the first reinforcement rib and the second reinforcement rib is 0.05 mm-0.15 mm.
  • the height of the protrusion or the depth of the depression of the first reinforcing rib and the second reinforcing rib is 0.01 mm-0.2 mm.
  • the height of the protrusion or the depth of the depression of the first reinforcing rib and the second reinforcing rib is greater than the average depth of the folds of the diaphragm itself.
  • the first reinforcing ribs are evenly distributed on the central portion, and the distance between two adjacent first reinforcing ribs is 0.5 mm-1.5 mm.
  • the second reinforcing ribs are evenly distributed on the fixing portion, and the distance between two adjacent second reinforcing ribs is 0.3 mm-1.5 mm.
  • the distance between the first reinforcing rib adjacent to the folding ring portion and the folding ring portion is 0.05 mm-0.1 mm.
  • the distance between the end of each of the first reinforcing ribs and the folded ring portion is equal and is 0.05 mm-0.1 mm.
  • one end of a part of the second reinforcing rib is arranged opposite to the folding ring part, and the distance between the end and the folding ring part is 0.05 mm-0.15 mm.
  • the closest distance between another part of the second reinforcing rib and the folding ring portion is 0.05 mm-0.15 mm.
  • the diaphragm has a rectangular structure, and the extending directions of the first reinforcing rib and the second reinforcing rib are parallel to the long axis of the diaphragm; or,
  • the extending directions of the first reinforcing rib and the second reinforcing rib are parallel to the short axis of the diaphragm.
  • a composite layer is combined on the central part.
  • a sound emitting device is provided, and the sound emitting device includes the above-mentioned diaphragm.
  • the first reinforcement rib and the second reinforcement rib are arranged at the position (the center part and the fixed part) where the diaphragm needs to be combined with other components, which significantly reduces the impact of irregular wrinkles on the diaphragm due to the crystallization of amorphous polyetheretherketone.
  • the influence of performance makes the distribution of irregular surface wrinkles more regular and uniform, eliminates the defect of reduced diaphragm adhesion caused by irregular wrinkles of amorphous polyetheretherketone, and increases this kind of non-crystalline polyetheretherketone-containing vibration The adhesion of the film.
  • Figure 1 shows the first structural diagram of a diaphragm of the present invention
  • Figure 2 shows the second structural diagram of a diaphragm of the present invention.
  • a diaphragm includes at least one layer of amorphous polyetheretherketone material, which can meet the requirements of high strength, resilience, damping, and durability. Temperature and comprehensive performance.
  • the diaphragm can be a single-layer polyether ether ketone material, or a composite material of multiple layers of polyether ether ketone and an adhesive layer, or the diaphragm can be a composite material of polyether ether ketone and other polymer materials/rubbers
  • it can be a composite material of polyether ether ketone and thermoplastic polyurethane/rubber, etc.
  • the diaphragm includes a central part 1, a folding ring part 2 and a fixed part 3.
  • the central part 1 is located in the center of the diaphragm. In order to reduce the possibility of the diaphragm generating split vibration in the high frequency range, a rigid part is combined with the central part 1.
  • Composite layer the composite layer is not easy to deform, can reduce the split vibration and improve the high-frequency performance of the diaphragm;
  • the folded ring part 2 is arranged around the periphery of the central part 1;
  • the fixed part 3 is arranged around the periphery of the folded ring part 2, and the fixed part 3 is surrounded by It is configured to be fixedly connected to a support member outside the diaphragm, such as a housing or a support ring that supports the diaphragm.
  • the shape of the diaphragm can be racetrack, rectangular or elliptical, etc.
  • the specific shape of the diaphragm can be designed according to actual needs.
  • the central part 1 of the diaphragm is also bonded with a hard dome as a reinforcing part for adjusting the acoustic performance of the diaphragm.
  • the diaphragm provided by the embodiment of the present invention is provided with a plurality of first reinforcing ribs 11 on the central portion 1 that needs to be combined with the composite layer, and a plurality of first reinforcement ribs 11 are provided on the fixing portion 3 that needs to be fixedly combined with the supporting member.
  • the extension directions of the first reinforcement rib 11 and the second reinforcement rib 31 are the same, and both correspond to the extension direction of the folds of the amorphous polyetheretherketone itself.
  • the first reinforcing rib 11 and the second reinforcing rib 31 also needs to extend in the horizontal direction, that is, along the direction parallel to the long axis of the rectangular diaphragm, that is, the first stiffener 11 and the second stiffener 12 are regularly distributed, as shown in Fig.
  • the extension direction of the rib is determined by the properties of the material itself, and should be consistent with the overall extension direction of the fold itself: when the fold extends horizontally as shown in Figure 1, the extension direction of the rib should also be horizontal; When extending in the vertical direction as shown in Figure 2, the extension direction of the ribs should also be vertical; for the diaphragm material containing amorphous polyether ether ketone, the folds extend obliquely as a whole (that is, not horizontal or vertical). For the structure extending in the straight direction, the arrangement direction of the reinforcing ribs should also be the same oblique direction.
  • the adjacently arranged first reinforcing ribs 11 are parallel to each other and have the same spacing structure, and the adjacently arranged second reinforcing ribs 31 are also parallel to each other and the same spacing structure, so that the distribution of the reinforcing ribs can be more regular. It is beneficial to reduce the adverse effects brought by the wrinkles of non-crystalline polyether ether ketone itself.
  • the first reinforcing rib 11 and the second reinforcing rib 31 are both convex structures or both concave structures; or one of the first reinforcing rib 11 and the second reinforcing rib 31 is convex
  • the structure is raised and the other is a recessed structure. Whether it is a convex structure or a concave structure, it can play a role in reducing the wrinkle texture on the surface of the diaphragm; the concave structure can be realized on the diaphragm by setting the convex structure at the corresponding position of the mold, or by setting the corresponding position of the mold The convex structure can be realized on the diaphragm by providing the concave structure.
  • the width of the first reinforcing rib 11 and the second reinforcing rib 31 is 0.05 mm-0.15 mm.
  • Reinforcing ribs with a width in this value range are easy to manufacture and can effectively reduce the wrinkle texture on the surface of the diaphragm. Reinforcing ribs with a width of less than 0.05 mm cannot significantly improve the wrinkle texture of the diaphragm surface. Reinforcing ribs with a width of greater than 0.15 mm consume more raw materials and increase the difficulty of production.
  • the height of the protrusion or the depth of the depression of the first reinforcing rib 11 and the second reinforcing rib 31 is 0.01 mm-0.2 mm.
  • the height of the protrusion or the depth of the depression of the first reinforcing rib 11 and the second reinforcing rib 31 is greater than the average depth of the self-folding of the non-crystalline polyetheretherketone diaphragm. This structure can more significantly reduce the influence of the wrinkles of the amorphous polyether ether ketone itself. Reinforcing ribs with protrusion height or depression depth within this value range are easy to manufacture and can effectively reduce the wrinkle texture on the surface of the diaphragm.
  • Reinforcing ribs with protrusion height or depression depth less than 0.01mm cannot significantly improve the wrinkle texture of the diaphragm surface. Reinforcing ribs with protrusion height or depression depth greater than 0.2mm consume more raw materials and increase the difficulty of manufacturing.
  • the height of the protrusion or the depth of the depression of the first reinforcing rib 11 may be different from the height of the protrusion or the depth of the depression of the second reinforcing rib 31, and the height/depth may be adjusted according to the requirements of the specific bonding force.
  • the first reinforcing ribs 11 are evenly distributed on the central portion 1, and the distance between two adjacent first reinforcing ribs 11 is 0.5 mm-1.5 mm.
  • the first reinforcing ribs 11 with a spacing in this numerical range are easy to manufacture and can effectively reduce the wrinkle texture on the surface of the diaphragm.
  • the first reinforcing ribs 11 with a pitch greater than 1.5 mm cannot significantly improve the wrinkle texture of the diaphragm surface, and the first reinforcing ribs 11 with a pitch less than 0.5 mm are difficult to manufacture and increase the cost.
  • the second reinforcing ribs 31 are evenly distributed on the fixing portion 3, and the distance between two adjacent second reinforcing ribs 31 is 0.3 mm-1.5 mm.
  • the second stiffener 31 with a spacing in this numerical range is easy to manufacture and can effectively reduce the wrinkle texture on the surface of the diaphragm.
  • the second reinforcing ribs 31 with a spacing greater than 1.5 mm cannot significantly improve the wrinkle texture of the diaphragm surface, and the second reinforcing ribs 31 with a spacing of less than 0.3 mm are difficult to manufacture and increase the cost.
  • the distance between the first reinforcing rib 11 adjacent to the folding ring portion 2 and the folding ring portion 2 is 0.05 mm-0.1 mm.
  • the spacing, namely d1 and d1 shown in Figs. 2 and 3, is easy to manufacture within this numerical range and can effectively reduce the wrinkle texture on the surface of the diaphragm.
  • d1 is greater than 0.1mm, the effect of improving the wrinkle texture of the diaphragm surface is not good, and when d1 is less than 0.05mm, the production is more difficult and the cost is increased.
  • the distance between the end of each of the first reinforcing ribs 11 and the folded ring portion 2 is equal and is 0.05 mm-0.1 mm.
  • the spacing, namely d2 and d2 shown in Figs. 2 and 3, is easy to manufacture within this numerical range and can effectively reduce the wrinkle texture on the surface of the diaphragm.
  • d2 is greater than 0.1 mm, the effect of improving the wrinkle texture of the diaphragm surface is not good, and when d2 is less than 0.05 mm, the production is more difficult and the cost is increased.
  • one end of a part of the second reinforcing rib 31 is disposed opposite to the folding ring portion 2, and the distance between the end and the folding ring portion 2 is 0.05 mm-0.15 mm.
  • the distance is d3 shown in Fig. 2 and Fig. 3, and d3 is easy to manufacture within this numerical range and can effectively reduce the wrinkle texture on the surface of the diaphragm.
  • d3 is greater than 0.15mm, the effect of improving the wrinkle texture of the diaphragm surface is not good, and when d3 is less than 0.05mm, the production is more difficult and the cost is increased.
  • the closest distance between the second reinforcing rib 31 and the folding ring portion 2 in another part of the second reinforcing rib 31 is 0.05 mm-0.15 mm.
  • the spacing, namely d4 and d4 shown in Figs. 2 and 3, is easy to manufacture within this value range and can effectively reduce the wrinkle texture on the surface of the diaphragm.
  • d4 is greater than 0.15mm, the effect of improving the wrinkle texture of the diaphragm surface is not good, and when d4 is less than 0.05mm, the production is more difficult and the cost is increased.
  • a sound emitting device is provided, and the sound emitting device includes the above-mentioned diaphragm.
  • the sound emitting device may be a speaker, for example.

Landscapes

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

Abstract

本发明提供了一种振膜，该振膜包含至少一层非结晶聚醚醚酮材料，其包括中心部，折环部和固定部，结晶后的振膜具有褶皱；中心部上设置有多个第一加强筋，固定部上设置有多个第二加强筋，第一加强筋和第二加强筋的延伸方向相同，并且第一加强筋和第二加强筋的延伸方向与褶皱的整体延伸方向对应；多个第一加强筋之间相互平行，多个第二加强筋之间相互平行。本发明通过设置第一加强筋和第二加强筋，显著降低了由于非结晶聚醚醚酮结晶后对振膜性能的影响，增加振膜的粘结力。同时，降低了分割振动问题，提升了振膜的整体声学性能。

Description

一种振膜及发声装置 技术领域
本发明涉及电声转换技术领域，更具体地，涉及一种振膜及发声装置。
背景技术
扬声器作为一种能够将电能转化为声能的器件，已广泛应用于手机、电脑、pad等移动终端中。扬声器性能的优劣会直接影响到终端装置的放声效果；而振膜作为扬声器发声的关键部件之一，对其质量的要求便越来越高，逐渐向着高强度、高音质、低失真方向发展，并且对扬声器振膜的结构要求也更加严苛。目前振膜中常用的聚醚醚酮原材料多为振膜成型效果更好的非结晶物料，由于音圈通电后在磁间隙中振动时会发热，为了提升振膜的耐热性需要将非结晶聚醚醚酮强制结晶。但是，非结晶聚醚醚酮结晶过程中，在143℃左右会发生玻璃态转变，在这一过程中分子链会重新排布，分子链的重构会引起物料的变形，产生收缩。由于非结晶聚醚醚酮结晶过程中的收缩，使非结晶聚醚醚酮物料结晶后产生不规则的褶皱。非结晶聚醚醚酮在0°方向和90°方向的模量差异很大，导致会沿着一个方向收缩，相应的结晶后产生的褶皱纹理也基本沿一个方向延伸。而这种结晶后产生褶皱的情况，并非单层非结晶聚醚醚酮材料才会具有，对于含有至少一层非结晶聚醚醚酮的复合振膜，结晶后整个复合振膜也同样会产生不规则的褶皱。这种结晶后的非结晶聚醚醚酮振膜由于产生了不规则的褶皱纹理，部分褶皱具有足够的深度容纳胶水，部分褶皱的深度较小使胶水不能有效浸润，影响非结晶聚醚醚酮的整体润湿效果，进一步会影响外围固定部与振膜支撑部件、中心部与硬质复合层涂胶粘接的表面的润湿效果及 粘接力，导致防水气密性失效。另外，振膜振动时，无规则的表面褶皱纹理会产生轻微分割振动，降低听音良率，从而影响扬声器的整体性能。
有鉴于此，需要提供一种新的技术方案以解决上述技术问题。
发明内容
本发明的一个目的是提供一种振膜及发声装置的新技术方案。
根据本发明的第一方面，提供了一种振膜，所述振膜包含至少一层非结晶聚醚醚酮材料，其包括：
中心部，所述中心部位于所述振膜的中心位置；
折环部，所述折环部围绕设置在中心部的外围；
固定部，所述固定部围绕设置在折环部的外围，所述固定部被配置为与所述振膜外部的支撑部件固定连接；
结晶后的所述振膜具有褶皱；所述中心部上设置有多个第一加强筋，所述固定部上设置有多个第二加强筋，所述第一加强筋和所述第二加强筋的延伸方向相同，并且所述第一加强筋和所述第二加强筋的延伸方向与所述褶皱的整体延伸方向对应；
所述多个第一加强筋之间相互平行，所述多个第二加强筋之间相互平行。
可选地，所述第一加强筋及第二加强筋均为凸起结构或者均为凹陷结构；或者所述第一加强筋及第二加强筋的其中之一为凸起结构且另一个为凹陷结构。
可选地，所述第一加强筋及第二加强筋的宽度为0.05mm-0.15mm。
可选地，所述第一加强筋及第二加强筋的凸起高度或凹陷深度为0.01mm-0.2mm。
可选地，所述第一加强筋及第二加强筋的凸起高度或凹陷深度大于所述振膜自身的褶皱的平均深度。
可选地，所述第一加强筋在所述中心部上均匀分布，相邻两条所述第一加强筋之间的间距为0.5mm-1.5mm。
可选地，所述第二加强筋在所述固定部上均匀分布，相邻两条所述第二加强筋之间的间距为0.3mm-1.5mm。
可选地，与所述折环部相邻的所述第一加强筋与折环部之间的间距为0.05mm-0.1mm。
可选地，每条所述第一加强筋的端部与折环部的间距均相等且为0.05mm-0.1mm。
可选地，一部分所述第二加强筋的一个端部与所述折环部相对设置，所述端部与折环部之间的间距为0.05mm-0.15mm。
可选地，另一部分所述第二加强筋中与所述折环部的最近距离为0.05mm-0.15mm。
可选地，所述振膜为矩形结构，所述第一加强筋和所述第二加强筋的延伸方向平行于所述振膜的长轴；或者，
所述第一加强筋和所述第二加强筋的延伸方向平行于所述振膜的短轴。
可选地，所述中心部上结合有复合层。
根据本发明的另一方面，提供了一种发声装置，所述发声装置包括如上所述的振膜。
本发明通过在振膜需要与其他部件结合的位置上(中心部及固定部)设置第一加强筋和第二加强筋，显著降低了由于非结晶聚醚醚酮结晶后不规则褶皱对振膜性能的影响，使无规则的表面褶皱分布比较规则且均匀，消除了非结晶聚醚醚酮不规则褶皱带来的振膜粘结力降低的缺陷，增加这种含非结晶聚醚醚酮振膜的粘结力。避免了振膜中心部进行涂胶粘接硬质复合层时产生的气泡、粘接不均的问题，也保证了固定部与外壳等支撑部件涂胶粘接的均匀性和粘接力，避免了扬声器因粘接问题而导致的防水气 密性问题。同时，由于非结晶聚醚醚酮的表面设置了规则的加强筋，降低了褶皱问题产生的分割振动问题，提升了听音良率，提升了振膜的整体声学性能。
通过以下参照附图对本发明的示例性实施例的详细描述，本发明的其它特征及其优点将会变得清楚。
附图说明
被结合在说明书中并构成说明书的一部分的附图示出了本发明的实施例，并且连同其说明一起用于解释本发明的原理。
图1所示为本发明一种振膜的结构示意图一；
图2所示为本发明一种振膜的结构示意图二。
具体实施方式
现在将参照附图来详细描述本发明的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本发明及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
在这里示出和讨论的所有例子中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它例子可以具有不同的值。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步 讨论。
参考图1、图2所示，根据本发明的一个实施例，提供了一种振膜，该振膜包含至少一层非结晶聚醚醚酮材料，可以满足高强度、回弹、阻尼、耐温等综合性能。具体的，振膜可以为单层聚醚醚酮材料，也可以为多层聚醚醚酮和胶层复合的材料，或者振膜可以为聚醚醚酮与其他高分子材料/橡胶的复合材料，如可以为聚醚醚酮和热塑性聚氨酯/橡胶的复合材料等，对于上述含非结晶聚醚醚酮材料的振膜，在非结晶聚醚醚酮材料结晶后(复合振膜是将多层材料复合后对非结晶聚醚醚酮进行结晶)，振膜都会出现不规则褶皱。该振膜包括中心部1，折环部2及固定部3；中心部1位于振膜的中心位置，为了降低振膜在高频段产生分割振动的可能，在中心部1上结合有硬质的复合层，复合层不易变形，可降低分割振动提升振膜的高频性能；折环部2围绕设置在中心部1的外围；固定部3围绕设置在折环部2的外围，固定部3被配置为与振膜外部的支撑部件固定连接，如壳体或者固定支撑振膜的支撑环等。振膜的形状可以为跑道型、矩形或者椭圆形等，振膜的具体形状可根据实际需要进行设计。优选的，振膜的中心部1还粘接有硬质球顶作为补强部，用于调节振膜的声学性能。
由于非结晶聚醚醚酮在结晶过程中容易产生不规则褶皱，褶皱的延伸方向大致相同，由于褶皱的不规则结构影响振膜涂胶粘结的表面湿润效果及粘结力，导致防水气密性失效，影响振膜与其他部件的粘结结合的牢固性以及防水效果。作为一种改进，本发明实施例提供的振膜，在需要结合复合层的中心部1上设置有多个第一加强筋11，在需要与支撑部件固定结合的固定部3上设置有多个第二加强筋31，其中，第一加强筋11是规则分布的，第二加强筋31也是规则分布的。
本实施例第一加强筋11与第二加强筋31的延伸方向相同，均与非结晶聚醚醚酮自身褶皱的延伸方向对应。对于矩形结构的振膜，当非结晶聚醚醚酮的褶皱延伸方向总体沿水平方向分布时，即沿平行于矩形振膜的长 轴的方向分布时，第一加强筋11和第二加强筋31也需要沿水平方向即沿平行于矩形振膜的长轴的方向延伸，即第一加强筋11和第二加强筋12是规则分布的，如图1所示，而非结晶聚醚醚酮自身的褶皱分布不规则。当聚醚醚酮的褶皱延伸方向总体沿竖直方向分布时，即沿平行于矩形振膜的短轴的方向分布时，第一加强筋11和第二加强筋31同样也是沿竖直方向即沿平行于矩形振膜的短轴的方向延伸，如图2所示。需要说明的是，上述的“水平”或“竖直”方向是以图示结构为准的。加强筋的延伸方向是以材料自身的属性决定的，应当与褶皱自身的整体延伸方向一致：当褶皱如图1所示沿水平方向延伸时，加强筋的延伸方向也应当是水平方向；当褶皱如图2所示沿垂直方向延伸时，加强筋的延伸方向也应当是竖直方向；对于含非结晶聚醚醚酮的振膜物料裁切后，褶皱整体斜向延伸(即并非水平或竖直方向延伸)的结构，加强筋的设置方向也应当是同向的斜向方向。
优选的，相邻设置的第一加强筋11为相互平行且间距相同的结构，相邻设置的第二加强筋31同样为相互平行且间距相同的结构，这样可以使加强筋的分布更规则，有利于降低非结晶聚醚醚酮自身褶皱带来的不利影响。
本实施例通过在振膜需要与其他部件结合的位置上设置第一加强筋11和第二加强筋31，显著降低了由于非结晶聚醚醚酮结晶后不规则褶皱对振膜性能的影响，使无规则的表面褶皱分布比较规则且均匀，消除了非结晶聚醚醚酮不规则褶皱带来的振膜粘结力降低的缺陷，增加这种含非结晶聚醚醚酮振膜的粘结力。避免了振膜中心部1进行涂胶粘接硬质复合层时产生的气泡、粘接不均的问题，也保证了固定部3与外壳等支撑部件涂胶粘接的均匀性和粘接力，避免了扬声器因粘接问题而导致的防水气密性问题。同时，由于非结晶聚醚醚酮的表面设置了规则的加强筋，降低了褶皱问题产生的分割振动问题，提升了听音良率，提升了振膜的整体声学性能。
在一个实施例中，所述第一加强筋11及第二加强筋31均为凸起结构 或者均为凹陷结构；或者所述第一加强筋11及第二加强筋31的其中之一为凸起结构且另一个为凹陷结构。无论是凸起结构或者凹陷结构，均能起到减轻振膜表面的褶皱纹理的作用；通过在模具相应位置处设置凸起结构便可在振膜上实现凹陷结构，或者通过在模具相应位置处设置凹陷结构便可在振膜上实现凸起结构。
在一个实施例中，根据振膜的尺寸及形状，所述第一加强筋11及第二加强筋31的宽度为0.05mm-0.15mm。宽度在该数值范围的加强筋易于制作并且能够有效减轻振膜表面的褶皱纹理。宽度尺寸小于0.05mm的加强筋无法明显改善振膜表面的褶皱纹理，宽度尺寸大于0.15mm的加强筋消耗原材料较多且会加大制作难度。
在一个实施例中，所述第一加强筋11及第二加强筋31的凸起高度或凹陷深度为0.01mm-0.2mm。优选的，第一加强筋11及第二加强筋31的凸起高度或凹陷深度大于含非结晶聚醚醚酮振膜的自身褶皱的平均深度。这种结构可以更显著地降低非结晶聚醚醚酮自身褶皱带来的影响。凸起高度或凹陷深度在该数值范围的加强筋易于制作并且能够有效减轻振膜表面的褶皱纹理。凸起高度或凹陷深度小于0.01mm的加强筋无法明显改善振膜表面的褶皱纹理，凸起高度或凹陷深度大于0.2mm的加强筋消耗原材料较多且会加大制作难度。其中，第一加强筋11的凸起高度或凹陷深度可以与第二加强筋31的凸起高度或凹陷深度不同，其高度/深度可以根据具体的粘结力的需求进行调整。
在一个实施例中，所述第一加强筋11在所述中心部1上均匀分布，相邻两条所述第一加强筋11之间的间距为0.5mm-1.5mm。间距在该数值范围的第一加强筋11易于制作并且能够有效减轻振膜表面的褶皱纹理。间距大于1.5mm的第一加强筋11无法明显改善振膜表面的褶皱纹理，间距小于0.5mm的第一加强筋11制作难度较大、成本提高。
在一个实施例中，所述第二加强筋31在所述固定部3上均匀分布， 相邻两条所述第二加强筋31之间的间距为0.3mm-1.5mm。间距在该数值范围的第二加强筋31易于制作并且能够有效减轻振膜表面的褶皱纹理。间距大于1.5mm的第二加强筋31无法明显改善振膜表面的褶皱纹理，间距小于0.3mm的第二加强筋31制作难度较大、成本提高。
在一个实施例中，与所述折环部2相邻的所述第一加强筋11与折环部2之间的间距为0.05mm-0.1mm。该间距即图2、图3中所示的d1，d1在该数值范围内易于制作并且能够有效减轻振膜表面的褶皱纹理。d1大于0.1mm时对振膜表面的褶皱纹理改善效果欠佳，d1小于0.05mm时制作难度较大、成本提高。
在一个实施例中，每条所述第一加强筋11的端部与折环部2的间距均相等且为0.05mm-0.1mm。该间距即图2、图3中所示的d2，d2在该数值范围内易于制作并且能够有效减轻振膜表面的褶皱纹理。d2大于0.1mm时对振膜表面的褶皱纹理改善效果欠佳，d2小于0.05mm时制作难度较大、成本提高。
在一个实施例中，一部分所述第二加强筋31的一个端部与所述折环部2相对设置，所述端部与折环部2之间的间距为0.05mm-0.15mm。该间距即图2、图3中所示的d3，d3在该数值范围内易于制作并且能够有效减轻振膜表面的褶皱纹理。d3大于0.15mm时对振膜表面的褶皱纹理改善效果欠佳，d3小于0.05mm时制作难度较大、成本提高。
在一个实施例中，另一部分所述第二加强筋31中与所述折环部2的最近距离为0.05mm-0.15mm。该间距即图2、图3中所示的d4，d4在该数值范围内易于制作并且能够有效减轻振膜表面的褶皱纹理。d4大于0.15mm时对振膜表面的褶皱纹理改善效果欠佳，d4小于0.05mm时制作难度较大、成本提高。
根据本发明的另一个实施例，提供了一种发声装置，所述发声装置包括如上所述的振膜。所述发声装置例如可以是扬声器。
虽然已经通过例子对本发明的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上例子仅是为了进行说明，而不是为了限制本发明的范围。本领域的技术人员应该理解，可在不脱离本发明的范围和精神的情况下，对以上实施例进行修改。本发明的范围由所附权利要求来限定。

Claims (14)

  1. 一种振膜，其特征在于，所述振膜包含至少一层非结晶聚醚醚酮材料，其包括：
    中心部，所述中心部位于所述振膜的中心位置；
    折环部，所述折环部围绕设置在中心部的外围；
    固定部，所述固定部围绕设置在折环部的外围，所述固定部被配置为与所述振膜外部的支撑部件固定连接；
    结晶后的所述振膜具有褶皱；所述中心部上设置有多个第一加强筋，所述固定部上设置有多个第二加强筋，所述第一加强筋和所述第二加强筋的延伸方向相同，并且所述第一加强筋和所述第二加强筋的延伸方向与所述褶皱的整体延伸方向对应；
    所述多个第一加强筋之间相互平行，所述多个第二加强筋之间相互平行。
  2. 根据权利要求1所述的振膜，其特征在于，所述第一加强筋及第二加强筋均为凸起结构或者均为凹陷结构；或者所述第一加强筋及第二加强筋的其中之一为凸起结构且另一个为凹陷结构。
  3. 根据权利要求1所述的振膜，其特征在于，所述第一加强筋及第二加强筋的宽度为0.05mm-0.15mm。
  4. 根据权利要求2所述的振膜，其特征在于，所述第一加强筋及第二加强筋的凸起高度或凹陷深度为0.01mm-0.2mm。
  5. 根据权利要求4所述的振膜，其特征在于，所述第一加强筋及第二加强筋的凸起高度或凹陷深度大于所述振膜自身的褶皱的平均深度。
  6. 根据权利要求1所述的振膜，其特征在于，所述第一加强筋在所述中心部上均匀分布，相邻两条所述第一加强筋之间的间距为0.5mm-1.5mm。
  7. 根据权利要求1所述的振膜，其特征在于，所述第二加强筋在所述 固定部上均匀分布，相邻两条所述第二加强筋之间的间距为0.3mm-1.5mm。
  8. 根据权利要求1所述的振膜，其特征在于，与所述折环部相邻的所述第一加强筋与折环部之间的间距为0.05mm-0.1mm。
  9. 根据权利要求1所述的振膜，其特征在于，每条所述第一加强筋的端部与折环部的间距均相等且为0.05mm-0.1mm。
  10. 根据权利要求1所述的振膜，其特征在于，一部分所述第二加强筋的一个端部与所述折环部相对设置，所述端部与折环部之间的间距为0.05mm-0.15mm。
  11. 根据权利要求10所述的振膜，其特征在于，另一部分所述第二加强筋中与所述折环部的最近距离为0.05mm-0.15mm。
  12. 根据权利要求1-11任一项所述的振膜，其特征在于，所述振膜为矩形结构，所述第一加强筋和所述第二加强筋的延伸方向平行于所述振膜的长轴；或者，
    所述第一加强筋和所述第二加强筋的延伸方向平行于所述振膜的短轴。
  13. 根据权利要求12所述的振膜，其特征在于，所述中心部上结合有复合层。
  14. 一种发声装置，其特征在于，所述发声装置包括如权利要求1-13中任一项所述的振膜。
PCT/CN2019/129536 2019-11-11 2019-12-28 一种振膜及发声装置 WO2021093117A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201911095956.3 2019-11-11
CN201911095956.3A CN110972034B (zh) 2019-11-11 2019-11-11 一种振膜及发声装置

Publications (1)

Publication Number Publication Date
WO2021093117A1 true WO2021093117A1 (zh) 2021-05-20

Family

ID=70030589

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/129536 WO2021093117A1 (zh) 2019-11-11 2019-12-28 一种振膜及发声装置

Country Status (2)

Country Link
CN (1) CN110972034B (zh)
WO (1) WO2021093117A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN212588499U (zh) * 2020-06-18 2021-02-23 瑞声科技(新加坡)有限公司 发声器件
CN115379361A (zh) * 2022-09-28 2022-11-22 韩基岩 振膜阵列

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001039541A2 (de) * 1999-11-22 2001-05-31 Harman Audio Electronic Systems Gmbh Flachlautsprecheranordnung für tieftonwiedergabe
CN203813951U (zh) * 2014-02-26 2014-09-03 东莞市高鑫机电科技服务有限公司 一种提高扬声器驱动器功率的装置
CN104335603A (zh) * 2012-05-21 2015-02-04 德莎欧洲公司 电声换能器用的不对称多层隔膜
CN204707263U (zh) * 2015-05-07 2015-10-14 河南省鑫艺来塑胶科技有限公司 高频手机振膜
CN206402428U (zh) * 2017-01-23 2017-08-11 惠州市悦声电子有限公司 一种复合音膜
CN209390309U (zh) * 2018-12-30 2019-09-13 瑞声科技(新加坡)有限公司 音膜及具有其的发声器
CN209390304U (zh) * 2018-12-30 2019-09-13 瑞声科技(新加坡)有限公司 音膜及具有其的发声器

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2458893B1 (en) * 2010-11-26 2015-11-25 Knowles Ipc (M) Sdn Bhd Loudspeaker
CN202799101U (zh) * 2012-07-10 2013-03-13 汉得利（常州）电子有限公司 扬声器的复合式振膜
CN203423789U (zh) * 2013-09-04 2014-02-05 中山市天键电声有限公司 一种复合耳机喇叭膜片
US10129652B2 (en) * 2014-09-12 2018-11-13 Apple Inc. Audio speaker surround geometry for improved pistonic motion
CN204442656U (zh) * 2014-12-31 2015-07-01 苏州恒听电子有限公司 一种具有凹凸型加强筋的振膜
CN104796843A (zh) * 2015-03-31 2015-07-22 歌尔声学股份有限公司 结晶peek膜和振膜的形成方法以及结晶peek振膜
CN205029854U (zh) * 2015-10-21 2016-02-10 歌尔声学股份有限公司 扬声器振膜
CN205647941U (zh) * 2015-11-03 2016-10-12 歌尔股份有限公司 一种扬声器振膜
US10244328B2 (en) * 2016-04-06 2019-03-26 Innovation Sound Technology Co., Ltd. Moving-coil speaker
CN207939723U (zh) * 2018-03-14 2018-10-02 安徽格林开思茂光电科技股份有限公司 一种振动音膜结构
JP2019161542A (ja) * 2018-03-15 2019-09-19 オンキヨー株式会社 振動板およびこれを用いたスピーカーユニット、ヘッドホン、並びにイヤホン、振動板の製造方法
CN208112926U (zh) * 2018-05-23 2018-11-16 信利光电股份有限公司 一种扬声器振膜及具有该振膜的扬声器
CN109266275A (zh) * 2018-09-12 2019-01-25 苏州赛伍应用技术股份有限公司 微型扬声器振膜球耐高温型粘结胶膜及球顶模块

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001039541A2 (de) * 1999-11-22 2001-05-31 Harman Audio Electronic Systems Gmbh Flachlautsprecheranordnung für tieftonwiedergabe
CN104335603A (zh) * 2012-05-21 2015-02-04 德莎欧洲公司 电声换能器用的不对称多层隔膜
CN203813951U (zh) * 2014-02-26 2014-09-03 东莞市高鑫机电科技服务有限公司 一种提高扬声器驱动器功率的装置
CN204707263U (zh) * 2015-05-07 2015-10-14 河南省鑫艺来塑胶科技有限公司 高频手机振膜
CN206402428U (zh) * 2017-01-23 2017-08-11 惠州市悦声电子有限公司 一种复合音膜
CN209390309U (zh) * 2018-12-30 2019-09-13 瑞声科技(新加坡)有限公司 音膜及具有其的发声器
CN209390304U (zh) * 2018-12-30 2019-09-13 瑞声科技(新加坡)有限公司 音膜及具有其的发声器

Also Published As

Publication number Publication date
CN110972034A (zh) 2020-04-07
CN110972034B (zh) 2021-05-18

Similar Documents

Publication Publication Date Title
WO2016150173A1 (zh) 振膜组件
WO2015103731A1 (zh) 一种扬声器膜片及装配有该膜片的扬声器
WO2021093117A1 (zh) 一种振膜及发声装置
CN103856874A (zh) 扬声器振动系统
CN107277712B (zh) 硅胶振膜的成型方法、硅胶振膜及发声装置
CN105357615A (zh) 扬声器及其膜片
US9324315B2 (en) Loudspeaker diaphragm and loudspeaker using same
CN206490822U (zh) 一体式复合扬声器振膜
CN108650602A (zh) 一种薄型大功率声音激励器
CN103237285B (zh) 采用3d打印技术成型的复合振膜式压电扬声器
CN207135272U (zh) 振膜及设有该振膜的扬声器
KR101000756B1 (ko) 마이크로 스피커용 일체형 진동판, 그 제조 방법 및 그 진동판을 포함하는 마이크로 스피커
WO2021114152A1 (zh) 一种扬声器振动件
KR101353590B1 (ko) 하나의 고분자 필름에서 강성도가 다르게 일체로 성형된 스피커용 진동판
CN208623900U (zh) 一种薄型大功率声音激励器
WO2017149984A1 (ja) スピーカ
WO2022000921A1 (zh) 振膜和应用该振膜的发声装置
WO2021093114A1 (zh) 一种振膜及发声装置
CN110198507B (zh) 一种新型振膜及扬声器
JP2011097181A (ja) 圧電スピーカ
WO2022007009A1 (zh) 振膜组件及扬声器
JP2009164866A (ja) マイクロスピーカ用振動板の製造方法および該製造方法により製造されたマイクロスピーカ用振動板、該振動板を用いたマイクロスピーカおよび該マイクロスピーカを用いた携帯電話機
JP3879627B2 (ja) スピーカ用振動板およびこれを用いたスピーカ
CN117156358B (zh) 一种高回弹性扬声器复合振膜及具有该振膜的耳机扬声器
JP5352566B2 (ja) 音響機器用振動板

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19952725

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19952725

Country of ref document: EP

Kind code of ref document: A1