CN106851517B - 振膜球顶、振膜球顶的制作方法及扬声器 - Google Patents

振膜球顶、振膜球顶的制作方法及扬声器 Download PDF

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CN106851517B
CN106851517B CN201610969425.2A CN201610969425A CN106851517B CN 106851517 B CN106851517 B CN 106851517B CN 201610969425 A CN201610969425 A CN 201610969425A CN 106851517 B CN106851517 B CN 106851517B
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carbon fiber
fiber layer
layer
ball top
vibrating diaphragm
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CN106851517A (zh
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狄勋
马利鹏
梁平
赵彬
严绪东
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AAC Technologies Pte Ltd
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Abstract

本发明公开了一种振膜球顶，其所述振膜球顶包括交替层叠设置的第一碳纤维层和第二碳纤维层，所述第一碳纤维层及所述第二碳纤维层分别呈由单向延伸的碳纤维束排布形成的单层结构，所述第一碳纤维层的碳纤维束的延伸方向垂直于所述第二碳纤维层的碳纤维束的延伸方向，所述第一碳纤维层与所述第二碳纤维层之间具有厚度差。本发明提供的振膜球顶由单向延伸的碳纤维束排布形成的碳纤维层交替层铺，且相邻两层的碳纤维层的碳纤维束的延伸方向相互垂直，代替现有铜箔或铝箔等与发泡材料复合振膜球顶，材料比强度大，在提供相同强度的情况下，可以减少振膜球顶的厚度，而且层与层之间粘接效果好，不易分层，不会吸水，防水效果好。

Description

振膜球顶、振膜球顶的制作方法及扬声器
【技术领域】
本发明涉及声电转换领域，尤其涉及一种振膜球顶、振膜球顶的制作方法及扬声器。
【背景技术】
随着电子行业的发展，电声系统需要不断的提升性能及可靠性，对振膜球顶的要求也越来越高，现有的铝箔与发泡材料复合的振膜球顶已经不能满足，会出现铝箔碎裂、铝箔与发泡材料分层、材料强度不足等现象。铝箔作为外观，容易出现污染、划伤等现象，发泡材料受力容易发生形变，无法承受压力，且容易吸水。
因此，有必要提供一种新的技术方案以解决上述技术问题。
【发明内容】
为了解决上述技术问题，本发明提供一种不易分层、强度大、防水效果好的振膜球顶、振膜球顶的制作方法及扬声器。
本发明的技术方案如下：一种振膜球顶，其所述振膜球顶包括交替层叠设置的第一碳纤维层和第二碳纤维层，所述第一碳纤维层及所述第二碳纤维层分别呈由单向延伸的碳纤维束排布形成的单层结构，所述第一碳纤维层的碳纤维束的延伸方向垂直于所述第二碳纤维层的碳纤维束的延伸方向，所述第一碳纤维层与所述第二碳纤维层之间具有厚度差。
优选的，所述振膜球顶的厚度为40-250微米。
优选的，所述第一碳纤维层与所述第二碳纤维层的厚度比为d，1＜d≤20。
优选的，所述第一碳纤维层与所述第二碳纤维层的厚度比为3。
优选的，所述第一碳纤维层和所述第二碳纤维层分别由拉伸模量不低于200Gpa的碳纤维束单向排布形成。
优选的，所述球顶呈跑道形，所述第一碳纤维层的碳纤维束沿球顶的短轴方向排布，所述第二碳纤维层的碳纤维束沿球顶的长轴方向排布。
优选的，相邻所述第一碳纤维层与所述第二碳纤维层之间热压成型。
本发明还提供了该振膜球顶的制作方法，该方法包括如下步骤：
提供第一碳纤维层，该第一碳纤维层由树脂预浸后的碳纤维束沿第一方向单向延伸排布形成；
提供第二碳纤维层，该第二碳纤维层由树脂预浸后的碳纤维束沿第二方向单向延伸排布形成，所述第二方向垂直于所述第一方向；
将所述第一碳纤维层和所述第二碳纤维层交替层叠并热压成型；
切割成型。
优选的，所述切割成型的方式包括激光切割、切边模冲切和模切机模切。
本发明还提供一种扬声器，其包括振动系统，所述振动系统包括如上述实施例中任意一项所述的振膜球顶。
本发明提供的振膜球顶具有以下有益效果：
一、所述振膜球顶由单向延伸的碳纤维束排布形成的碳纤维层交替层铺，且相邻两层的碳纤维层的碳纤维束的延伸方向相互垂直，代替现有铜箔与发泡材料复合振膜球顶，材料比强度更大，在提供相同强度的情况下，可以减少振膜球顶的厚度；相互垂直的两层碳纤维层具有不同的厚度，通过调整其厚度差可以获得不同的振动频率。例如对于跑道形磁路的扬声器而言，对应设置的跑道形球顶平行于短轴方向设置的碳纤维层的厚度与中高频的振动强度有关；
二、所述振膜球顶由碳纤维材料制成，材料耐挤压，可以和音膜一体成型；
三、所述振膜球顶为实体，不会吸水，防水效果更好；
四、所述振膜球顶的碳纤维层与层之间粘接效果好，不易分层；
五、所述振膜球顶可以根据产品的需求调整纵向碳纤维层与横向碳纤维层的厚度比，把强度提供在最需要的方向上。
【附图说明】
图1为本发明的振膜球顶一较佳实施例的结构示意图。
【具体实施方式】
下面结合附图和实施方式对本发明作进一步说明。
本发明揭示一种扬声器，其包括振动系统，所述振动系统包括振膜球顶，该振膜球顶贴附在振膜中央，一般形状与磁路相对应。
请参阅图1，为本发明的振膜球顶一较佳实施例的结构示意图。所述振膜球顶1包括交替层叠设置的第一碳纤维层100和第二碳纤维层200。振膜球顶1可以是双层或多层叠加的符合结构。图1所示的实施例中，振膜球顶1为三层复合结构。所述第一碳纤维层100及所述第二碳纤维层200分别呈由单向延伸的碳纤维束排布形成的单层结构，所述第一碳纤维层100的碳纤维束的延伸方向垂直于所述第二碳纤维层200的碳纤维束的延伸方向，且所述第一碳纤维层100与所述第二碳纤维层200之间具有厚度差。所述第一碳纤维层100与相邻所述第二碳纤维200层之间可以通过热压成型。所述第一碳纤维层100的厚度及所述第二碳纤维层200的厚度可以根据实际产品所需的厚度和强度来设定。在本实施例中，所述第一碳纤维层100的数量为两个，所述第二碳纤维层200的数量为一个，所述第二碳纤维层200夹设于两个所述第一碳纤维层100之间。优选的，所述振膜球顶1的厚度范围为40-250微米。
为了使所述振膜球顶1在纵向和横向上具有不同的强度，以适用不同类型的扬声器，对于跑道形扬声器而言，对应设置跑道形振膜球顶，所述第一碳纤维层100和所述第二碳纤维层200可以分别具有不同的厚度，所述第一碳纤维层100的碳纤维束沿球顶的短轴方向排布，所述第二碳纤维层200的碳纤维束沿球顶的长轴方向排布。优选的，所述第一碳纤维层100与所述第二碳纤维层200的厚度比d，1＜d≤20。在本实施例中，所述第一碳纤维层100与所述第二碳纤维层200的厚度比为3。对应长短轴方向延伸的纤维层的厚度与扬声器不同频段的振动强度有关。短轴方向的第二碳纤维层200的厚度更大，更有利于中高频的频响。
为了使所述振膜球顶1获得更好的刚性，所述第一碳纤维层100和所述第二碳纤维层200分别由拉伸模量不低于300Gpa的碳纤维束单向排布形成，具体可采用东丽的T系列T100以上及所有M系列碳纤维，或者相同强度等级别的其他系列和其他供应商的材料。
所述第一碳纤维层100的碳纤维束和所述第二碳纤维层200的碳纤维束的种类可以相同，也可以不相同，优选的，所述碳纤维层101和所述碳纤维层201设置为采用相同种类的碳纤维束排布形成。
进一步的，所述第一碳纤维层100和所述第二碳纤维层200均由树脂预浸后的碳纤维束单向延伸排布形成，具体可采用环氧树脂、聚醚醚酮、聚酰亚胺、聚苯硫醚、聚对苯撑苯并二噁唑、芳纶1414等进行预浸。
本发明还提供了所述振膜球顶1的制作方法，该方法包括如下步骤：
步骤S1，提供第一碳纤维层100，该第一碳纤维层100由树脂预浸后的碳纤维束沿第一方向单向延伸排布形成；
步骤S2，提供第二碳纤维层200，该第二碳纤维层200由树脂预浸后的碳纤维束沿第二方向单向延伸排布形成，所述第二方向垂直于所述第一方向；
步骤S3，将所述第一碳纤维层100和所述第二碳纤维层200交替层叠并热压成型；
步骤S4，切割成型。
在本步骤中，所述切割成型的方式包括激光切割、切边模冲切和模切机模切。
本发明提供的振膜球顶具有以下有益效果：
一、所述振膜球顶由单向延伸的碳纤维束排布形成的碳纤维层交替层铺，且相邻两层的碳纤维层的碳纤维束的延伸方向相互垂直，代替现有铜箔、铝箔等与发泡材料复合振膜球顶，材料比强度更大，在提供相同强度的情况下，可以减少振膜球顶的厚度；相互垂直的两层碳纤维层具有不同的厚度，通过调整其厚度差可以获得不同的振动频率。例如对于跑道形磁路的扬声器而言，对应设置的跑道形球顶平行于短轴方向设置的碳纤维层的厚度与中高频的振动强度有关；二、所述振膜球顶由碳纤维材料制成，材料耐挤压，可以和音膜一体成型；
三、所述振膜球顶为实体，不会吸水，防水效果更好；
四、所述振膜球顶的碳纤维层与层之间粘接效果好，不易分层；
五、所述振膜球顶可以根据产品的需求调整纵向碳纤维层与横向碳纤维层的厚度比，把强度提供在最需要的方向上。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (10)

1.一种振膜球顶，其特征在于，所述振膜球顶包括交替层叠设置的第一碳纤维层和第二碳纤维层，所述第一碳纤维层及所述第二碳纤维层分别呈由单向延伸的碳纤维束排布形成的单层结构，所述第一碳纤维层的碳纤维束的延伸方向垂直于所述第二碳纤维层的碳纤维束的延伸方向，所述第一碳纤维层与所述第二碳纤维层之间具有厚度差，所述振膜球顶沿所述第一碳纤维层的碳纤维束延伸方向上的强度与沿所述第二碳纤维层的碳纤维束延伸方向上的强度不同。
2.根据权利要求1所述的振膜球顶，其特征在于，所述振膜球顶的厚度为40～250微米。
3.根据权利要求1所述的振膜球顶，其特征在于，所述第一碳纤维层与所述第二碳纤维层的厚度比为d，1＜d≤20。
4.根据权利要求3所述的振膜球顶，其特征在于，所述第一碳纤维层与所述第二碳纤维层的厚度比为3。
5.根据权利要求1所述的振膜球顶，其特征在于，所述第一碳纤维层和所述第二碳纤维层分别由拉伸模量不低于200Gpa的碳纤维束单向排布形成。
6.根据权利要求1所述的振膜球顶，其特征在于，所述球顶呈跑道形，所述第一碳纤维层的碳纤维束沿所述振膜球顶的短轴方向排布，所述第二碳纤维层的碳纤维束沿所述振膜球顶的长轴方向排布。
7.根据权利要求1所述的振膜球顶，其特征在于，相邻所述第一碳纤维层与所述第二碳纤维层之间热压成型。
8.一种如权利要求1所述振膜球顶的制作方法，该方法包括如下步骤：
提供第一碳纤维层，该第一碳纤维层由树脂预浸后的碳纤维束沿第一方向单向延伸排布形成；
提供第二碳纤维层，该第二碳纤维层由树脂预浸后的碳纤维束沿第二方向单向延伸排布形成，所述第二方向垂直于所述第一方向；
将所述第一碳纤维层和所述第二碳纤维层交替层叠并热压成型；
切割成型。
9.根据权利要求8所述的振膜球顶的制作方法，其特征在于，所述切割成型的方式包括激光切割、切边模冲切和模切机模切。
10.一种扬声器，包括振动系统，其特征在于，所述振动系统包括如权利要求1-7项中任意一项所述的振膜球顶。
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