WO2020140543A1 - 扬声器 - Google Patents

扬声器 Download PDF

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Publication number
WO2020140543A1
WO2020140543A1 PCT/CN2019/110746 CN2019110746W WO2020140543A1 WO 2020140543 A1 WO2020140543 A1 WO 2020140543A1 CN 2019110746 W CN2019110746 W CN 2019110746W WO 2020140543 A1 WO2020140543 A1 WO 2020140543A1
Authority
WO
WIPO (PCT)
Prior art keywords
dome
axis side
grooves
voice coil
groove
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2019/110746
Other languages
English (en)
French (fr)
Inventor
陈敏敏
狄勋
赵彬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AAC Technologies Holdings Shenzhen Co Ltd
AAC Technologies Pte Ltd
Original Assignee
AAC Acoustic Technologies Shenzhen Co Ltd
AAC Technologies Pte Ltd
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 AAC Acoustic Technologies Shenzhen Co Ltd, AAC Technologies Pte Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Publication of WO2020140543A1 publication Critical patent/WO2020140543A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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
    • H04R2307/023—Diaphragms comprising ceramic-like materials, e.g. pure ceramic, glass, boride, nitride, carbide, mica and carbon materials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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
    • H04R2307/027—Diaphragms comprising metallic materials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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
    • H04R2307/204—Material aspects of the outer suspension of loudspeaker diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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
    • H04R2307/207—Shape aspects of the outer suspension of loudspeaker diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the utility model relates to the field of electroacoustic conversion, in particular to a speaker.
  • the diaphragm is the core component of acoustic devices such as speakers, and the requirements for its acoustic performance have also increased.
  • a related art speaker includes a basin frame, a magnetic circuit system and a vibration system provided in the basin frame, and the vibration system includes a diaphragm fixed on the basin frame and a voice coil connected to the diaphragm.
  • the voice coil is inserted in the magnetic gap of the magnetic circuit system and directly contacts the diaphragm.
  • the voice coil since the voice coil is directly in contact with the diaphragm and completely fits in the contact position, in order to ensure sufficient space between the magnetic bowl and the dome during the thinning of the speaker, the voice coil It needs to be elongated to ensure the magnetic flux.
  • the amplitude of the diaphragm becomes larger, it needs more space.
  • the airflow in the voice coil cannot be circulated in time, and the strength of the conventional alloy dome is not enough, which affects the performance of the speaker and makes the performance of the speaker. decline.
  • the technical problem to be solved by the utility model is to provide a loudspeaker which can promote the airflow in the voice coil and improve the performance of the loudspeaker.
  • the present invention provides a loudspeaker including a basin stand, a magnetic circuit system and a vibration system provided in the basin stand, the vibration system includes a folding ring fixed on the basin stand, A dome fixed at the center of the folding ring and a voice coil connected to the dome, the dome includes an inner surface close to the magnetic circuit system and a direction away from the inner surface from the inner surface A groove formed by a depression, the width of the groove is greater than the thickness of the voice coil, the voice coil is fixedly connected to the inner surface, and a leak channel is formed between the groove and the voice coil.
  • the dome has a rectangular structure with rounded corners.
  • the dome further includes a long axis side and a short axis side connected to the long axis side.
  • the number of the grooves is multiple, and the multiple The grooves are sequentially spaced along the long axis side and/or the short axis side.
  • the number of the grooves is six, and the six grooves are sequentially spaced along the long axis side and arranged symmetrically with respect to the mid-vertical line of the short axis side.
  • the dome is a rectangular structure with rounded corners
  • the dome further includes a relatively long axis side and a short axis side connected to the long axis side, the number of the grooves is multiple, multiple The grooves are distributed at the rounded corners of the dome.
  • the number of the grooves is four, and the four grooves are respectively disposed on the four rounded corners of the dome.
  • the cross section of the groove in a plane parallel to the inner surface is rectangular, square, diamond or circular.
  • the concave depth of the groove is 10 ⁇ 500um.
  • the voice coil and the inner surface are fixedly connected by glue.
  • the dome is a composite material of carbon fiber and foamed material or epoxy resin, polyether ether ketone, polyimide, polyphenylene sulfide, polyparaphenylene benzodioxazole, aramid 1414 Such as prepreg resin or aluminum or copper foil and foam material composite tape.
  • the foamed material includes polymethacrylimide, methylcyclopentenolone, foamed polyphenylene sulfide or foamed polyimide.
  • the speaker of the present invention by providing the groove on the top of the ball, a leakage path is formed between the groove and the voice coil to facilitate airflow circulation, so that the airflow in the voice coil It can get timely circulation through the leak channel between the voice coil and the dome. After the vibration system amplitude increases, it can effectively reduce the difference between the internal and external air pressure of the voice coil, avoiding the impact of the unbalanced internal and external air pressure on the performance of the speaker; By providing a leak channel to provide a leak channel, the change in the thickness of the dome caused by the leak channel can be avoided, and the good performance and reliability of the speaker can be ensured.
  • 1 is a schematic diagram of the stereo structure of the speaker provided by the utility model
  • FIG. 2 is an exploded schematic view of the stereo structure of the speaker provided by the utility model
  • FIG. 3 is an exploded schematic view of the stereoscopic structure of the speaker provided by the utility model at another angle;
  • FIG. 4 is a schematic diagram of the three-dimensional structure of the dome and the voice coil of the first embodiment of the speaker provided by the utility model;
  • FIG. 5 is a cross-sectional view of the speaker shown in FIG. 4 along line A-A;
  • FIG. 6 is a schematic diagram of a three-dimensional structure of a dome of a speaker according to a second embodiment of the utility model.
  • the present invention provides a speaker 100.
  • the speaker 100 includes a basin frame 10, a magnetic circuit system 30 and a vibration system 50 provided in the basin frame 10.
  • the magnetic circuit system 30 includes a magnetic bowl 31, a main magnetic steel 33 disposed in the magnetic bowl 31, a magnetic conductive plate 35 disposed above the main magnetic steel 33, and surrounding the main magnetic steel 33 Auxiliary magnetic steel 37 and an upper clamping plate 39 provided above the auxiliary magnetic steel 37. Wherein, a magnetic gap is formed between the main magnetic steel 33 and the auxiliary magnetic steel 37.
  • the vibration system 50 includes a folding ring 51 fixed on the basin frame 10, a dome 53 fixed on the center of the folding ring 51, and a voice coil 55 connected to the dome 53.
  • the voice coil 55 is inserted into the magnetic gap and drives the dome 53 to vibrate and sound.
  • the dome 53 has a rounded rectangular structure.
  • the dome 53 includes an inner surface 531 close to the magnetic circuit system 30, a plurality of grooves 533 formed concavely from the inner surface 531 in a direction away from the magnetic circuit system 30, and a relatively long The shaft side 535 and the short shaft side 537 connecting the long axis side 535.
  • the groove 533 includes a bottom wall 5331.
  • the width of the groove 533 is greater than the thickness of the voice coil 55.
  • the voice coil 55 is fixedly connected to the inner surface 531 of the dome 53 and is connected to the concave
  • the bottom wall 5331 of the groove 533 is spaced apart to form a leak channel 101.
  • the voice coil 55 and the inner surface 531 are fixedly connected by glue. And no glue is applied at the position of the groove 533 to prevent the glue from blocking the leakage channel 101.
  • the present invention does not limit the shape of the groove 533, that is, the cross-section of the groove 533 in a plane parallel to the inner surface 531 may be rectangular, square, rhombic, or circular, that is, in On the premise of ensuring that the leakage channel 101 is formed between the dome 53 and the voice coil 55, the groove 533 may have any shape.
  • the concave depth of the groove 533 is 10 ⁇ 500um. If the depth of the depression is too small, the size of the leakage channel 101 formed between the voice coil 55 and the dome 53 is too small, and the effect of timely and good airflow in the voice coil 55 cannot be achieved. If the depth of the depression is too large, the strength of the dome 53 at the position of the groove 533 is reduced, which affects the sound performance of the speaker 100.
  • the number of the grooves 533 may be one or multiple. When a plurality of the grooves 533 are provided, the plurality of grooves 533 are sequentially spaced along the long axis side 535 and/or the short axis side 537 in sequence.
  • the number of the grooves 533 is six, and the six grooves 533 are sequentially spaced along the long-axis side 535 and are symmetrical about the mid-vertical line of the short-axis side 537 Settings.
  • the dome 53 is a composite material of carbon fiber and foamed material or epoxy resin, polyether ether ketone, polyimide, polyphenylene sulfide, polypyrene Pre-impregnated resins such as phenylene benzodioxazole, aramid 1414, or aluminum or copper foil and foam material composite tape.
  • the foamed material includes polymethacrylimide, methylcyclopentenolone, foamed polyphenylene sulfide or foamed polyimide.
  • the dome 53 forms the groove 533 by stamping.
  • the speaker provided in this embodiment is basically the same as the speaker 100 provided in Embodiment 1, except for the position of the groove 60.
  • the grooves 60 are distributed at the rounded corners of the dome. Specifically, the number of the grooves 60 is four, and the four grooves 60 are respectively disposed on the four rounded corners of the dome.
  • the speaker 100 of the present invention by providing the groove 533 in the dome 53, a leakage channel 101 that facilitates airflow is formed between the groove 533 and the voice coil 55, The air flow in the voice coil 55 can be circulated in time through the leakage channel 101 between the voice coil 55 and the dome 53. After the amplitude of the vibration system 50 is increased, the air pressure difference between the inside and outside of the voice coil 55 can be effectively reduced to avoid sound The influence of the air pressure imbalance between the inside and outside of the ring 55 on the performance of the speaker 100; at the same time, the leakage channel 101 is provided by using the groove 533 to avoid the change in the thickness of the dome 53 due to the leakage channel 101, ensuring the goodness of the speaker 100 Performance and reliability.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

本实用新型提供了一种扬声器，包括盆架、设于所述盆架内的磁路系统及振动系统，所述振动系统包括固定于所述盆架上的折环，固定于所述折环中央的球顶以及连接于所述球顶的音圈，所述球顶包括靠近所述磁路系统的内表面及自所述内表面向远离所述磁路系统的方向凹陷形成的凹槽，所述音圈与所述内表面固定连接且所述凹槽与所述音圈之间形成泄漏通道。与相关技术相比，本实用新型提供的扬声器可促进音圈内气流流通，提升扬声器的性能。

Description

扬声器 技术领域
本实用新型涉及电声转换领域，尤其涉及一种扬声器。
 背景技术
随着市场需求的不断提高，电子器件如手机等逐渐向薄型化方向发展，而且要求其声音质量越来越好，这就要求手机中的声学器件向着微型、薄型、高音质的方向发展。振膜是扬声器等声学器件的核心部件，对其声学性能的要求也就随之提高。
相关技术的扬声器包括盆架、设于所述盆架内的磁路系统和振动系统，所述振动系统包括固定于所述盆架上的振膜以及连接于所述振膜的音圈。所述音圈插设于所述磁路系统的磁间隙内并与所述振膜直接抵接。在这种扬声器结构中，由于音圈与振膜直接抵接并在抵接的位置完全贴合，在扬声器薄型化的过程中，为了保证磁碗与球顶之间足够的空间大小，音圈需要拉长才能保证磁通量，振膜振幅变大后则需要更大的空间，音圈内的气流无法及时流通，并且常规合金球顶的强度不够，从而对扬声器的性能造成影响，使得扬声器的性能下降。
因此，有必要提供一种新的扬声器来解决上述问题。
 技术问题
本实用新型要解决的技术问题是提供一种可促进音圈内气流流通，提升扬声器的性能的扬声器。
 技术解决方案
为解决上述技术问题，本实用新型提供了一种扬声器，包括盆架、设于所述盆架内的磁路系统及振动系统，所述振动系统包括固定于所述盆架上的折环、固定于所述折环中央的球顶及连接于所述球顶的音圈，所述球顶包括靠近所述磁路系统的内表面及自所述内表面向远离所述磁路系统的方向凹陷形成的凹槽，所述凹槽的宽度大于所述音圈的厚度，所述音圈与所述内表面固定连接且所述凹槽与所述音圈之间形成泄漏通道。
优选的，所述球顶为圆角矩形结构，所述球顶还包括相对设置的长轴边以及连接所述长轴边的短轴边，所述凹槽的数量为多个，且多个所述凹槽沿所述长轴边和/或所述短轴边依次间隔分布。
优选的，所述凹槽的数量为六个，六个所述凹槽沿所述长轴边依次间隔分布且关于所述短轴边的中垂线对称设置。
优选的，所述球顶为圆角矩形结构，所述球顶还包括相对设置的长轴边以及连接所述长轴边的短轴边，所述凹槽的数量为多个，多个所述凹槽分布于所述球顶的圆角处。
优选的，所述凹槽的数量为四个，四个所述凹槽分别设置于所述球顶的四个圆角。
优选的，所述凹槽在平行于所述内表面的平面的横截面呈矩形、正方形、菱形或圆形。
优选的，所述凹槽的凹陷深度为10~500um。
优选的，所述音圈与所述内表面之间通过胶水固定连接。
优选的，所述球顶为碳纤维与发泡材料的复合材料或为环氧树脂、聚醚醚酮、聚酰亚胺、聚苯硫醚、聚对苯撑苯并二恶唑、芳纶1414等预浸树脂或为铝箔或铜箔与发泡材料复合的料带。
优选的，所述发泡材料包括聚甲基丙烯酰亚胺、甲基环戊烯醇酮、发泡聚苯硫醚或发泡聚酰亚胺。
 有益效果
与相关技术相比，本实用新型的扬声器，通过在所述球顶设置所述凹槽，使得所述凹槽与所述音圈之间形成利于气流流通的泄漏通道，使得音圈中的气流能够通过音圈与球顶之间的泄漏通道得到及时的流通，在振动系统振幅增大后能有效减小音圈的内外气压差，避免了音圈内外气压不平衡对扬声器性能的影响；同时通过采用设置凹槽的方式提供泄漏通道，可避免因设置泄漏通道导致球顶厚度的变化，保证了所述扬声器的良好性能及可靠性。
 附图说明
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本实用新型提供的扬声器的立体结构示意图；
图2为本实用新型提供的扬声器的立体结构分解示意图；
图3为本实用新型提供的扬声器另一个角度的立体结构分解示意图；
图4为本实用新型提供的扬声器实施例一的球顶和音圈的立体结构示意图；
图5为图4所示的扬声器沿A-A线的剖视图；
图6为本实用新型提供的扬声器实施例二的球顶的立体结构示意图。
 本发明的实施方式
下面将结合本实用新型实施例中的附图，对本实用新型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实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，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它实施例，都属于本实用新型保护的范围。
实施例一：
请结合参阅图1至图5，本实用新型提供了一种扬声器100，所述扬声器100包括盆架10、设于所述盆架10内的磁路系统30及振动系统50。
所述磁路系统30包括磁碗31、设于所述磁碗31内的主磁钢33、设于所述主磁钢33上方的导磁板35、围设于所述主磁钢33四周的副磁钢37及设于所述副磁钢37上方的上夹板39。其中，所述主磁钢33与所述副磁钢37之间形成磁间隙。
所述振动系统50包括固定于所述盆架10上的折环51、固定于所述折环51中央的球顶53及连接于所述球顶53的音圈55。所述音圈55插入所述磁间隙并驱动所述球顶53振动发声。
在本实施方式中，所述球顶53为圆角矩形结构。具体的，所述球顶53包括靠近所述磁路系统30的内表面531、自所述内表面531向远离所述磁路系统30的方向凹陷形成的多个凹槽533、相对设置的长轴边535及连接所述长轴边535的短轴边537。
所述凹槽533包括底壁5331，所述凹槽533的宽度大于所述音圈55的厚度，所述音圈55与所述球顶53的所述内表面531固定连接并与所述凹槽533的所述底壁5331间隔设置形成泄漏通道101。通过设置所述泄漏通道101，在所述振动系统50振幅增大后能有效减小所述音圈55的内外气压差，避免了所述音圈55内外气压不平衡对所述扬声器100性能的影响。
优选的，所述音圈55与所述内表面531通过胶水固定连接。并在所述凹槽533的位置不打胶，防止胶水堵塞泄露通道101。
本实用新型对所述凹槽533的形状不做限定，即所述凹槽533在平行于所述内表面531的平面的横截面可以为矩形、正方形、菱形或圆形，也就是说，在保证所述球顶53与所述音圈55之间形成所述泄漏通道101的前提下，所述凹槽533可以呈任何形状。
优选的，所述凹槽533的凹陷深度为10~500um。凹陷深度太小，会使得所述音圈55与所述球顶53之间形成的所述泄露通道101的尺寸过小，无法起到所述音圈55内气流及时、良好流通的效果。凹陷深度太大，会使得所述球顶53在所述凹槽533的位置处强度降低，对扬声器100的发声性能产生影响。
进一步的，所述凹槽533的数量可以为一个，也可以为多个。当设置多个所述凹槽533时，多个所述凹槽533沿所述长轴边535和/或所述短轴边537依次间隔分布。
具体的，在本实施方式中，所述凹槽533的数量为六个，六个所述凹槽533沿所述长轴边535依次间隔分布且关于所述短轴边537的中垂线对称设置。
在上述结构的基础上，在本实施方式中，所述球顶53为碳纤维与发泡材料的复合材料或为环氧树脂、聚醚醚酮、聚酰亚胺、聚苯硫醚、聚对苯撑苯并二恶唑、芳纶1414等预浸树脂或为铝箔或铜箔与发泡材料复合的料带。其中，所述发泡材料包括聚甲基丙烯酰亚胺、甲基环戊烯醇酮、发泡聚苯硫醚或发泡聚酰亚胺。所述球顶53通过冲压的方式形成所述凹槽533。
实施例二
本实施例提供的扬声器与实施例一提供的扬声器100基本相同，不同点在于所述凹槽60的位置。
请参阅图6，在本实施方式中，所述凹槽60分布于所述球顶的圆角处。具体的，所述凹槽60的数量为四个，四个所述凹槽60分别设置于所述球顶的四个圆角。
与相关技术相比，本实用新型的扬声器100，通过在所述球顶53设置所述凹槽533，使得所述凹槽533与所述音圈55之间形成利于气流流通的泄漏通道101，使得音圈55中的气流能够通过音圈55与球顶53之间的泄漏通道101得到及时的流通，在振动系统50振幅增大后能有效减小音圈55的内外气压差，避免了音圈55内外气压不平衡对扬声器100性能的影响；同时通过采用设置凹槽533的方式提供泄漏通道101，可避免因设置泄漏通道101导致球顶53厚度的变化，保证了所述扬声器100的良好性能及可靠性。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (10)

  1. 一种扬声器，包括盆架、设于所述盆架内的磁路系统及振动系统，所述振动系统包括固定于所述盆架上的折环、固定于所述折环中央的球顶及连接于所述球顶的音圈，其特征在于，所述球顶包括靠近所述磁路系统的内表面及自所述内表面向远离所述磁路系统的方向凹陷形成的多个凹槽，所述凹槽包括底壁，所述凹槽的宽度大于所述音圈的厚度，所述音圈与所述球顶的所述内表面固定连接并与所述凹槽的所述底壁间隔设置形成泄漏通道。
  2. 根据权利要求1所述的扬声器，其特征在于，所述球顶为圆角矩形结构，所述球顶还包括相对设置的长轴边以及连接所述长轴边的短轴边，多个所述凹槽沿所述长轴边和/或所述短轴边依次间隔分布。
  3. 根据权利要求2所述的扬声器，其特征在于，所述凹槽的数量为六个，六个所述凹槽沿所述长轴边依次间隔分布且关于所述短轴边的中垂线对称设置。
  4. 根据权利要求1所述的扬声器，其特征在于，所述球顶为圆角矩形结构，所述球顶还包括相对设置的长轴边以及连接所述长轴边的短轴边，多个所述凹槽分布于所述球顶的圆角处。
  5. 根据权利要求4所述的扬声器，其特征在于，所述凹槽的数量为四个，四个所述凹槽分别设置于所述球顶的四个圆角。
  6. 根据权利要求1-5任一项所述的扬声器，其特征在于，所述凹槽在平行于所述内表面的平面的横截面呈矩形、正方形、菱形或圆形。
  7. 根据权利要求6所述的扬声器，其特征在于，所述凹槽的凹陷深度为10~500um。
  8. 根据权利要求1所述的扬声器，其特征在于，所述音圈与所述内表面通过胶水固定连接。
  9. 根据权利要求1所述的扬声器，其特征在于，所述球顶为碳纤维与发泡材料的复合材料或为环氧树脂、聚醚醚酮、聚酰亚胺、聚苯硫醚、聚对苯撑苯并二恶唑、芳纶1414等预浸树脂或为铝箔或铜箔与发泡材料复合的料带。
  10. 根据权利要求9所述的扬声器，其特征在于，所述发泡材料包括聚甲基丙烯酰亚胺、甲基环戊烯醇酮、发泡聚苯硫醚或发泡聚酰亚胺。
PCT/CN2019/110746 2018-12-30 2019-10-12 扬声器 Ceased WO2020140543A1 (zh)

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