WO2022000633A1 - 碳纤维球顶及扬声器 - Google Patents

碳纤维球顶及扬声器 Download PDF

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Publication number
WO2022000633A1
WO2022000633A1 PCT/CN2020/103803 CN2020103803W WO2022000633A1 WO 2022000633 A1 WO2022000633 A1 WO 2022000633A1 CN 2020103803 W CN2020103803 W CN 2020103803W WO 2022000633 A1 WO2022000633 A1 WO 2022000633A1
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Prior art keywords
carbon fiber
dome
layer
unidirectional tape
layers
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PCT/CN2020/103803
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English (en)
French (fr)
Inventor
胡洪建
宋小军
李帅
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瑞声声学科技(深圳)有限公司
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Publication of WO2022000633A1 publication Critical patent/WO2022000633A1/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
    • H04R7/127—Non-planar diaphragms or cones dome-shaped
    • 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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • 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

Definitions

  • the present application relates to the technical field of electroacoustic devices, in particular to a carbon fiber dome and a speaker.
  • the dome-shaped speaker refers to a speaker that directly radiates sound waves by using a spherical-shaped diaphragm. It belongs to an electric speaker.
  • the diaphragm is a hemispherical diaphragm. Good high frequency response, wide directivity and less distortion.
  • the carbon fiber dome in the prior art is generally stacked with multiple layers of carbon fiber materials, and the stacking is completely uniform, but the product has poor high frequency frequency response and poor sound quality.
  • the purpose of the present application is to provide a carbon fiber dome and a loudspeaker, which can solve the problem of poor high-frequency frequency response of the carbon fiber dome in the prior art due to the uniform stacking of multiple layers of carbon fiber materials.
  • a carbon fiber dome which includes a first carbon fiber layer, a base material layer and a plurality of second carbon fiber layers that are stacked in sequence, and the first carbon fiber layer includes opposite upper surfaces and lower surfaces,
  • the base material layer is arranged on the upper surface of the first carbon fiber layer, the upper surface includes a hollow first area and a second area surrounding the first area, the second area includes at least two ply carbon fiber unidirectional tape prepreg.
  • the second carbon fiber layer includes at least two layers of carbon fiber unidirectional tape prepreg.
  • the carbon fiber unidirectional tape prepreg comprises carbon fiber material and prepreg resin, and the tensile modulus of the carbon fiber material is greater than 200 Gpa.
  • the prepreg resin comprises one of epoxy resin, polyetheretherketone, polyimide, polyphenylene sulfide, polyparaphenylene benzobisoxazole and polyparaphenylene terephthalamide. one or more.
  • the fiber included angle of the carbon fiber unidirectional tape prepreg of two adjacent second carbon fiber layers is 0-90°.
  • the angle between the fibers of the carbon fiber unidirectional tape prepreg of the first carbon fiber layer and the carbon fiber unidirectional tape of the second carbon fiber layer is 0-90°.
  • the carbon fiber dome is in the shape of a rounded rectangle, and the fiber direction of the carbon fiber unidirectional tape prepreg of the first carbon fiber layer extends along the short axis direction of the carbon fiber dome.
  • the fiber direction of the carbon fiber unidirectional tape prepreg of the second carbon fiber layer adjacent to the first carbon fiber layer extends along the long axis direction of the carbon fiber dome.
  • the base material layer is provided with through holes, and the base material layer includes one of foamed material, aluminum foil or polyethylene naphthalate.
  • a loudspeaker including the above-mentioned carbon fiber dome.
  • the beneficial effect of the present application is that: by arranging a hollow first area in the first carbon fiber layer and a second area surrounding the first area, the second area includes at least two layers of carbon fiber unidirectional tape prepregs, so that the carbon fiber balls
  • the number of stacked layers in the middle local area of the top is less than the number of stacked layers in the surrounding areas, which reduces the thickness of the carbon fiber dome and the quality of the carbon fiber dome, and improves the high-frequency performance of the product.
  • FIG. 1 is a schematic diagram of an exploded structure of a speaker according to an embodiment of the application.
  • FIG. 2 is a schematic three-dimensional structure diagram of a speaker according to an embodiment of the application.
  • FIG. 3 is a schematic diagram of the exploded structure of the carbon fiber dome according to the embodiment of the application.
  • FIG. 4 is a schematic structural diagram of a first carbon fiber layer according to an embodiment of the application.
  • Fig. 5 is a partial enlarged structural schematic diagram of the region A of the base material layer in Fig. 3;
  • FIG. 6 is a cross-sectional view of a carbon fiber dome according to an embodiment of the application.
  • Fig. 7 is a partial enlarged structural schematic diagram of the region B of the first carbon fiber layer in Fig. 3;
  • Fig. 8 is a partial enlarged structural schematic diagram of the region C of the first sub-carbon fiber layer in Fig. 3;
  • FIG. 9 is a partial enlarged structural schematic diagram of the second sub-second carbon fiber layer D area in FIG. 3 .
  • first”, “second” and “third” in this application are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as “first”, “second”, “third” may expressly or implicitly include at least one of that feature.
  • "a plurality of” means at least two, such as two, three, etc., unless otherwise expressly and specifically defined. All directional indications (such as up, down, left, right, front, rear%) in the embodiments of the present application are only used to explain the relative positional relationship between components under a certain posture (as shown in the accompanying drawings). , motion situation, etc., if the specific posture changes, the directional indication also changes accordingly.
  • the terms “comprising” and “having” and any variations thereof are intended to cover non-exclusive inclusion.
  • the speaker 100 includes a basin frame 10 and is respectively fixed to the basin frame 10
  • a vibration system 20 and a magnetic circuit system 30 the basin frame 10 is provided with a fixed bracket 11
  • the vibration system 20 is located above the fixed bracket 11
  • the magnetic circuit system 30 is located below the fixed bracket 11
  • the vibrating system 20 includes a vibrating membrane 21 fixed on the fixed bracket 11 and a voice coil 22 located below the vibrating membrane 21 and used to drive the vibrating membrane 21 to vibrate and produce sound.
  • the ring 210, the periphery of the folding ring 210 is fixed on the fixing bracket 11.
  • the magnetic circuit system 30 includes a magnetic bowl 31 , a main magnetic steel 32 arranged in the magnetic bowl 31 , a magnetic conducting plate 33 arranged above the main magnetic steel 32 , and a secondary magnetic steel 34 arranged around the main magnetic steel 32 . Wherein, a magnetic gap is formed between the main magnetic steel 32 and the secondary magnetic steel 34 .
  • the folding ring 210 includes a first fixing part 2101 fixedly connected with the carbon fiber dome 200 , a folding ring part 2102 surrounding the first fixing part 2101 , and a second fixing part 2102 surrounding the folding ring part 2102 and fixed to the basin frame 10 .
  • the fixing part 2103 and the first fixing part 2101 are provided with an opening a in the middle position for installing the carbon fiber dome 200 , as shown in FIG. 1 .
  • Fig. 3 is a schematic diagram of the exploded structure of the carbon fiber dome according to the embodiment of the present application. Please refer to Fig. 1 and Fig. 3.
  • the carbon fiber dome 200 in this embodiment is a rectangle with rounded corners. In other embodiments, the carbon fiber dome 200 can also be a Other shapes that match the loop 210.
  • the carbon fiber dome 200 includes a first carbon fiber layer 1 , a base material layer 2 and a plurality of second carbon fiber layers 3 that are stacked in sequence.
  • the first carbon fiber layer 1 is disposed on the side close to the voice coil 22 .
  • FIG. 4 is a schematic structural diagram of the first carbon fiber layer according to an embodiment of the present application. Please refer to FIG. 4 .
  • the first carbon fiber layer 1 includes opposite upper surfaces 101 and lower surfaces 102 , and the substrate layer 2 is provided on the first carbon fiber layer 1 .
  • the surface 101 and the upper surface 101 include a hollow first area 1011 and a second area 1012 surrounding the first area 1011, and the second area 1012 includes at least two layers of carbon fiber unidirectional tape prepreg.
  • the first carbon fiber layer 1 of this embodiment is provided with a hollow first region 1011 , so that the number of stacked layers in the middle partial region of the carbon fiber dome 200 is less than the number of stacked layers in the surrounding regions, which reduces the thickness of the carbon fiber dome 200 and reduces the The quality of the carbon fiber dome 200 improves the high frequency performance of the product.
  • the substrate layer 2 includes a first surface 201 and a second surface 202 opposite to each other, the second carbon fiber layer 3 is provided on the first surface 201, and the first carbon fiber layer 1 is provided on the second surface 202, please Referring to FIG. 4 , a plurality of through holes 2011 are provided on the first surface 201 , and the plurality of through holes 2011 are arranged in an array.
  • the base material layer 2 in this embodiment is one of foamed material, aluminum foil or polyethylene naphthalate.
  • the second carbon fiber layer 3 includes at least two layers of carbon fiber unidirectional tape prepregs.
  • the first carbon fiber layer 1 and the second carbon fiber layer 3 in this embodiment can use the same or different layers of carbon fiber unidirectional tape prepregs, and the multi-layer carbon fiber unidirectional tape prepregs are processed by hot pressing.
  • the angle between the fibers of the carbon fiber unidirectional tape prepreg of the first carbon fiber layer 1 and the second carbon fiber layer 3 is 0-90°, preferably 0-45°.
  • the fiber included angle of the carbon fiber unidirectional tape prepreg of two adjacent second carbon fiber layers 3 is 0-90°, preferably 0-45°.
  • the fiber directions between the first carbon fiber layer 1 and the second carbon fiber layer 3 and between the adjacent second carbon fiber layers 3 form a certain angle, which ensures that the forces in all directions are balanced, and the adjacent second carbon fiber layers 3 pass through heat. Compression molding process, forming an integrated structure, high strength, not easy to break.
  • the second carbon fiber layer 3 includes a first sub-carbon fiber layer 301 and a second sub-carbon fiber layer 302 .
  • the fiber direction of the carbon fiber unidirectional tape prepreg of the first carbon fiber layer 1 extends along the short axis direction of the carbon fiber dome, and the carbon fiber unidirectional carbon fiber layer 301 close to the first carbon fiber layer 1
  • the fiber direction of the belt prepreg extends along the long axis direction of the carbon fiber dome 200.
  • the carbon fiber unidirectional belt prepreg of the second sub-carbon fiber layer The fiber direction extends along the short axis direction of the carbon fiber dome 200 as shown in FIG. 9 .
  • the carbon fiber unidirectional tape prepreg of this embodiment includes carbon fiber material and prepreg resin, and the carbon fiber unidirectional tape prepreg can be obtained by the following methods: impregnating or spraying thermosetting prepreg resin on the carbon fiber unidirectional tape, and then Carbon fiber unidirectional tape impregnation material with prepreg resin cured product on carbon fiber unidirectional tape formed after high temperature and high pressure treatment.
  • the carbon fiber unidirectional tape prepreg can be extended in the fiber direction, that is, the fiber direction can withstand a large force, and can withstand a weak force in the direction perpendicular to the fiber direction, but it can be greatly enhanced by curing with the prepreg resin. ability.
  • the prepreg resin includes one or more of epoxy resin, polyetheretherketone, polyimide, polyphenylene sulfide, polyparaphenylene benzobisoxazole and polyparaphenylene terephthalamide kind.
  • Carbon fiber unidirectional tape The tensile modulus of the carbon fiber material in the prepreg is greater than 200Gpa.
  • the carbon fiber material in the carbon fiber unidirectional tape prepreg can use Toray's T series T300 and above, all M series, as well as other series of the same strength level and materials from other suppliers, it should be noted that Toray's T series and M series The series is the carbon fiber model of Toray Corporation of Japan, which belongs to the industry standard. Those skilled in the art can easily obtain the materials of these two series.
  • the number of stacked layers in the middle partial region of the carbon fiber dome 200 of the embodiment of the present application is less than the number of stacked layers in the surrounding regions, so that the thickness of the middle region of the carbon fiber dome 200 is reduced and the overall quality of the carbon fiber dome 200 is reduced, improving the the high frequency performance of the product.
  • the resin in the carbon fiber unidirectional tape prepreg can make the surface of the dome structure smooth after curing, and the cured resin is hard and not easy to produce scratches, the structure of the carbon fiber dome 200 is more beautiful.

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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

本申请涉及电声装置技术领域，具体涉及一种碳纤维球顶及扬声器。该碳纤维球顶包括依次层叠设置的第一碳纤维层、基材层以及多个第二碳纤维层，第一碳纤维层包括相对的上表面和下表面，基材层设于第一碳纤维层的上表面，上表面包括中空的第一区域和围设于第一区域四周的第二区域，第二区域包括至少两层碳纤维单向带预浸料。本申请的碳纤维球顶及扬声器通过设置碳纤维球顶的中间局部区域的堆叠层数少于四周区域的堆叠层数，降低了碳纤维球顶的厚度且减轻了碳纤维球顶的质量，改善了产品的高频性能。

Description

碳纤维球顶及扬声器 【技术领域】
本申请涉及电声装置技术领域，具体涉及一种碳纤维球顶及扬声器。
【背景技术】
球顶形扬声器是指利用球顶形振膜直接辐射声波的扬声器，属于电动式扬声器，振膜是一个半球形膜片，用振膜折环直接支撑音圈而没有定心支片，特点是高频响应好，指向性宽及失真较小。
现有技术的碳纤维球顶一般由多层碳纤维材料堆叠，且堆叠完全均匀，但产品高频频响差，发声质量不好。
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】
本申请的目的在于提供一种碳纤维球顶及扬声器，能够解决现有技术中碳纤维球顶因多层碳纤维材料均匀堆叠而导致产品高频频响差的问题。
本申请的技术方案如下：提供一种碳纤维球顶，包括依次层叠设置的第一碳纤维层、基材层以及多个第二碳纤维层，所述第一碳纤维层包括相 对的上表面和下表面，所述基材层设于所述第一碳纤维层的上表面，所述上表面包括中空的第一区域和围设于所述第一区域四周的第二区域，所述第二区域包括至少两层碳纤维单向带预浸料。
优选地，所述第二碳纤维层包括至少两层碳纤维单向带预浸料。
优选地，所述碳纤维单向带预浸料包括碳纤维材料和预浸树脂，所述碳纤维材料的拉伸模量大于200Gpa。
优选地，所述预浸树脂包括环氧树脂、聚醚醚酮、聚酰亚胺、聚苯硫醚、聚对苯撑苯并二噁唑和聚对苯二甲酰对苯二胺的一种或多种。
优选地，相邻两个所述第二碳纤维层的碳纤维单向带预浸料的纤维夹角为0-90°。
优选地，所述第一碳纤维层与所述第二碳纤维层的碳纤维单向带预浸料的纤维夹角为0-90°。
优选地，所述碳纤维球顶呈圆角矩形，所述第一碳纤维层的碳纤维单向带预浸料的纤维方向沿所述碳纤维球顶的短轴方向延伸。
优选地，靠近所述第一碳纤维层的所述第二碳纤维层的碳纤维单向带预浸料的纤维方向沿所述碳纤维球顶的长轴方向延伸。
优选地，所述基材层设有通孔，所述基材层包括发泡材料、铝箔或聚萘二甲酸乙二醇酯中的一种。
本申请的另一技术方案如下：提供一种扬声器，包括上述的碳纤维球顶。
本申请的有益效果在于：通过在第一碳纤维层设置中空的第一区域和围设于第一区域四周的第二区域，第二区域包括至少两层碳纤维单向带预浸料，使得碳纤维球顶的中间局部区域的堆叠层数少于四周区域的堆叠层数，降低了碳纤维球顶的厚度且减轻了碳纤维球顶的质量，改善了产品的高频性能。
【附图说明】
图1为本申请实施例的扬声器的分解结构示意图；
图2为本申请实施例的扬声器的立体结构示意图；
图3为本申请实施例的碳纤维球顶的分解结构示意图；
图4为本申请实施例的第一碳纤维层的结构示意图；
图5为图3中基材层A区域的局部放大结构示意图；
图6为本申请实施例的碳纤维球顶的截面图；
图7为图3中第一碳纤维层B区域的局部放大结构示意图；
图8为图3中第一子碳纤维层C区域的局部放大结构示意图；
图9为图3中第二子第二碳纤维层D区域的局部放大结构示意图。
【具体实施方式】
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请中的术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”、“第三”的特征可以明示或者隐含地包括至少一个该特征。本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。本申请实施例中所有方向性指示(诸如上、下、左、右、前、后……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指 示也相应地随之改变。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
图1是本申请实施例的扬声器的分解结构示意图，图2是本申请实施例的扬声器的立体结构示意图，如图1和图2所示，扬声器100包括盆架10和分别固定于盆架10的振动系统20及磁路系统30，盆架10上设有固定支架11，振动系统20位于固定支架11的上方，磁路系统30位于固定支架11的下方。振动系统20包括固定于固定支架11的振膜21以及位于振膜21下方且用于驱动振膜21振动发声的音圈22，振膜21包括碳纤维球顶200以及围绕碳纤维球顶200设置的折环210，折环210的外围固定在固定支架11上。磁路系统30包括磁碗31、设于磁碗31内的主磁钢32、设于主磁钢32上方的导磁板33以及围设于主磁钢32四周的副磁钢34。 其中，主磁钢32和副磁钢34之间形成磁间隙。
如图1所示，折环210包括与碳纤维球顶200固定连接的第一固定部2101、围绕第一固定部2101的折环部2102以及围绕折环部2102且固定于盆架10的第二固定部2103，第一固定部2101上设有位于中间位置的用于安装碳纤维球顶200的开口a，如图1所示。
图3是本申请实施例的碳纤维球顶的分解结构示意图，请参见图1和图3，本实施例的碳纤维球顶200为圆角矩形，在其他实施例中，碳纤维球顶200也可以是其他与折环210相匹配的形状。碳纤维球顶200包括依次层叠设置的第一碳纤维层1、基材层2以及多个第二碳纤维层3。其中，第一碳纤维层1设置于靠近音圈22的一侧。
图4是本申请实施例的第一碳纤维层的结构示意图，请参见图4，第一碳纤维层1包括相对的上表面101和下表面102，基材层2设于第一碳纤维层1的上表面101，上表面101包括中空的第一区域1011和围设于第一区域1011四周的第二区域1012，第二区域1012包括至少两层碳纤维单向带预浸料。本实施例的第一碳纤维层1设置中空的第一区域1011，使得碳纤维球顶200的中间局部区域的堆叠层数少于四周区域的堆叠层数，降 低了碳纤维球顶200的厚度且减轻了碳纤维球顶200的质量，改善了产品的高频性能。
请参见图4和图5，基材层2包括相对的第一表面201和第二表面202，第二碳纤维层3设于第一表面201，第一碳纤维层1设于第二表面202，请参见图4，第一表面201上设有多个通孔2011，多个通孔2011呈阵列排列。本实施例的基材层2为发泡材料、铝箔或聚萘二甲酸乙二醇酯中的一种。本实施例的基材层2通过设置通孔2011，进一步降低了碳纤维球顶200的质量，提高了振动性能，改善了产品的高频性能。
第二碳纤维层3包括至少两层碳纤维单向带预浸料。本实施例的第一碳纤维层1和第二碳纤维层3可以使用相同或不同层数的碳纤维单向带预浸料，多层碳纤维单向带预浸料通过热压成型处理。
进一步地，第一碳纤维层1与第二碳纤维层3的碳纤维单向带预浸料的纤维夹角为0-90°，优选为0-45°。相邻两个第二碳纤维层3的碳纤维单向带预浸料的纤维夹角为0-90°，优选为0-45°。第一碳纤维层1与第二碳纤维层3之间以及相邻的第二碳纤维层3之间的纤维方向形成一定的角度，保证了各个方向受力均衡，相邻的第二碳纤维层3通过热压成型处理，形 成一体结构，强度高，不易破碎。
在本实施例中，请参见图3，以第二碳纤维层3设置两个为例进行说明，第二碳纤维层3包括第一子碳纤维层301和第二子碳纤维层302。请参见图6和图7，第一碳纤维层1的碳纤维单向带预浸料的纤维方向沿碳纤维球顶的短轴方向延伸，靠近第一碳纤维层1的第一子碳纤维层301的碳纤维单向带预浸料的纤维方向沿碳纤维球顶200的长轴方向延伸，如图8所示，与第一子碳纤维层301相邻的第二子碳纤维层302的碳纤维单向带预浸料的纤维方向沿碳纤维球顶200的短轴方向延伸，如图9所示。
本实施例的碳纤维单向带预浸料包括碳纤维材料和预浸树脂，该碳纤维单向带预浸料可以采用以下方式获得：将热固性的预浸树脂浸渍或喷涂在碳纤维单向带上，再经高温高压处理后形成的在碳纤维单向带上有预浸树脂固化物的碳纤维单向带浸渍材料。碳纤维单向带预浸料可以在纤维方向延伸，即纤维方向能够承受较大受力，在纤维方向垂直的方向上能够承受较弱受力，但通过与预浸树脂固化后大大增强承受力的能力。
其中，预浸树脂包括环氧树脂、聚醚醚酮、聚酰亚胺、聚苯硫醚、聚对苯撑苯并二噁唑和聚对苯二甲酰对苯二胺的一种或多种。碳纤维单向带 预浸料中的碳纤维材料的拉伸模量大于200Gpa。碳纤维单向带预浸料中的碳纤维材料可以采用东丽的T系列T300以上、M系列所有，以及相同强度级别的其他系列和其他供应商的材料，需要说明的是东丽的T系列和M系列是日本东丽公司的碳纤维型号，属于行业标准，本领域技术人员可轻松获取这两种系列的材料。
本申请实施例的碳纤维球顶200的中间局部区域的堆叠层数少于四周区域的堆叠层数，使得碳纤维球顶200中间区域的的厚度减小且减轻了碳纤维球顶200的整体质量，改善了产品的高频性能。另，由于碳纤维单向带预浸料中的树脂固化后能够使得球顶结构的表面光滑，且由于固化后的树脂强度硬不易产生刮痕，使得碳纤维球顶200结构更加美观。
以上所述的仅是本申请的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本申请创造构思的前提下，还可以做出改进，但这些均属于本申请的保护范围。

Claims (10)

  1. 一种碳纤维球顶，其特征在于，所述碳纤维球顶包括依次层叠设置的第一碳纤维层、基材层以及多个第二碳纤维层，所述第一碳纤维层包括相对的上表面和下表面，所述基材层设于所述第一碳纤维层的上表面，所述上表面包括中空的第一区域和围设于所述第一区域四周的第二区域，所述第二区域包括至少两层碳纤维单向带预浸料。
  2. 根据权利要求1所述的碳纤维球顶，其特征在于，所述第二碳纤维层包括至少两层碳纤维单向带预浸料。
  3. 根据权利要求2所述的碳纤维球顶，其特征在于，所述碳纤维单向带预浸料包括碳纤维材料和预浸树脂，所述碳纤维材料的拉伸模量大于200Gpa。
  4. 根据权利要求3所述的碳纤维球顶，其特征在于，所述预浸树脂包括环氧树脂、聚醚醚酮、聚酰亚胺、聚苯硫醚、聚对苯撑苯并二噁唑和聚对苯二甲酰对苯二胺的一种或多种。
  5. 根据权利要求2所述的碳纤维球顶，其特征在于，相邻两个所述第二碳纤维层的碳纤维单向带预浸料的纤维夹角为0-90°。
  6. 根据权利要求5所述的碳纤维球顶，其特征在于，所述第一碳纤维层与所述第二碳纤维层的碳纤维单向带预浸料的纤维夹角为0-90°。
  7. 根据权利要求6所述的碳纤维球顶，其特征在于，所述碳纤维球顶呈圆角矩形，所述第一碳纤维层的碳纤维单向带预浸料的纤维方向沿所述碳纤维球顶的短轴方向延伸。
  8. 根据权利要求7所述的碳纤维球顶，其特征在于，靠近所述第一碳纤维层的所述第二碳纤维层的碳纤维单向带预浸料的纤维方向沿所述碳纤维球顶的长轴方向延伸。
  9. 根据权利要求1所述的碳纤维球顶，其特征在于，所述基材层设有通孔，所述基材层包括发泡材料、铝箔或聚萘二甲酸乙二醇酯中的一种。
  10. 一种扬声器，其特征在于，所述扬声器包括如权利要求1至9任一项所述的碳纤维球顶。
PCT/CN2020/103803 2020-06-30 2020-07-23 碳纤维球顶及扬声器 WO2022000633A1 (zh)

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