WO2020199554A1 - 一种中音扬声器 - Google Patents

一种中音扬声器 Download PDF

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Publication number
WO2020199554A1
WO2020199554A1 PCT/CN2019/111689 CN2019111689W WO2020199554A1 WO 2020199554 A1 WO2020199554 A1 WO 2020199554A1 CN 2019111689 W CN2019111689 W CN 2019111689W WO 2020199554 A1 WO2020199554 A1 WO 2020199554A1
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WO
WIPO (PCT)
Prior art keywords
diaphragm
iron
speaker according
honeycomb panel
voice coil
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PCT/CN2019/111689
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English (en)
French (fr)
Inventor
柴国强
沈跃武
顾博
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苏州上声电子股份有限公司
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Application filed by 苏州上声电子股份有限公司 filed Critical 苏州上声电子股份有限公司
Priority to EP19922466.8A priority Critical patent/EP3952338A4/en
Priority to JP2021600144U priority patent/JP3236921U/ja
Priority to US17/593,374 priority patent/US11950072B2/en
Publication of WO2020199554A1 publication Critical patent/WO2020199554A1/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
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising 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
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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
    • H04R2307/021—Diaphragms comprising cellulose-like materials, e.g. wood, paper, linen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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; DEAF-AID SETS; 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; DEAF-AID SETS; 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
    • H04R2307/029—Diaphragms comprising fibres

Definitions

  • the invention relates to the field of loudspeakers, in particular to a midrange loudspeaker.
  • the bandwidth can generally reach 10KHz, and requires strong directivity.
  • the present invention provides a midrange speaker whose working range can be extended to 20KHz and improves the high-frequency directivity of the speaker.
  • a midrange loudspeaker comprising a basin frame, a diaphragm arranged on the basin frame, a magnetic circuit system arranged on the basin frame, and a voice coil connected to the diaphragm, the diaphragm including a front surface And the honeycomb panel on the back and the coating film respectively covering the front and back of the honeycomb panel, and the honeycomb panel has a plurality of holes.
  • the holes of the honeycomb panel are through holes that penetrate from the front surface to the back surface of the honeycomb panel.
  • the material of the honeycomb panel is one or a combination of paper, Nomex insulating paper, aluminum, and foam material.
  • the material of the coating is one or a combination of paper, glass fiber, aluminum and Kevlar.
  • the diaphragm is flat.
  • the diaphragm is composed of the honeycomb panel and the covering film, and the diaphragm is flat in shape as a whole.
  • the diaphragm is connected to the basin frame through a yoke ring, and the yoke ring is fixedly connected to the outer edge of the diaphragm.
  • the yoke ring is fixedly connected to the covering film on the front surface of the honeycomb panel.
  • the magnetic circuit system includes a U iron, a main magnet, a front piece and a secondary magnet, the U iron is fixedly connected to the basin frame, the main magnet, the front piece and the auxiliary magnet
  • the secondary magnetic steel is laminated on the bottom of the U iron, and the voice coil is inserted in the gap between the upper end of the U iron and the front piece.
  • the main magnetic steel is glued to the U iron
  • the front piece is glued to the main magnetic steel
  • the secondary magnetic steel is glued to the front piece.
  • the voice coil is fixedly connected to the diaphragm through a voice coil frame.
  • the midrange speaker further includes a bouncing wave, and the bouncing wave is connected to the voice coil skeleton.
  • the elastic wave is sleeved on the voice coil skeleton and fixedly connected to the basin frame.
  • the diaphragm is composed of the honeycomb panel and the covering film, the diaphragm is flat as a whole, and the outer edge of the diaphragm is fixedly connected to the frame by a yoke;
  • the magnetic circuit system includes a U iron, a main magnet, a front piece, and a secondary magnet.
  • the U iron is recessed in the middle and the periphery extends upward, and the upper end of the U iron is fixedly connected to the basin frame, and the main magnet
  • the steel, the front piece and the auxiliary magnetic steel are laminated and arranged on the bottom of the U iron and arranged coaxially.
  • the voice coil is inserted in the gap between the upper end of the U iron and the front piece.
  • the diaphragm adopts a porous honeycomb panel, which can extend the bandwidth to 20KHz and improve the high frequency directivity of the speaker.
  • Fig. 1 is a schematic structural diagram of a midrange speaker according to an embodiment of the present invention
  • Figure 2 is a cross-sectional view of the diaphragm in Figure 1;
  • Fig. 3 shows the frequency response curves of the midrange speaker and the traditional midrange speaker according to the embodiment of the present invention.
  • Fig. 4 respectively shows the frequency response curves of the midrange speaker and the traditional midrange speaker of the embodiment of the present invention at 60° off-axis.
  • Figure 1 shows a midrange speaker according to an embodiment of the present invention, which includes a basin frame 1, a diaphragm set on the basin frame 1, a magnetic circuit system 3 set on the basin frame 1, and connected to the diaphragm 2 voice coil 4.
  • the diaphragm 2 includes a honeycomb panel 21 having a front surface and a back surface, and a coating film 22 respectively covering the front and back surfaces of the honeycomb panel 21.
  • the honeycomb panel 21 has a plurality of holes 210.
  • the diaphragm 2 has a three-layer structure composed of two coating films 22 and a honeycomb panel 21 located between the two coating films 22.
  • the holes 210 of the honeycomb panel 21 are through holes that penetrate from the front to the back of the honeycomb panel 21, and the shape of the holes 210 is a round hole, a square hole, a hexagonal hole, or the like.
  • the material of the honeycomb panel 21 is paper, Nomex insulating paper, aluminum or foamed material (such as foamed plastic or foamed metal, etc.), among which Nomex, also called Nomex, is a kind of meta-aramid, also known as aramid 1313.
  • the material of the film 22 is paper, glass fiber, aluminum, Kevlar (Kevlar).
  • the diaphragm 2 has a flat plate shape, and specifically, the honeycomb panel 21 is a flat plate as a whole.
  • the diaphragm 2 is composed of the honeycomb panel 21 and the covering film 22, and the entire diaphragm 2 is flat.
  • the diaphragm 2 is connected to the frame 1 through a yoke ring, and the yoke ring and the outer edge of the diaphragm 2 are fixedly connected. Specifically, the yoke ring and the covering film 22 on the front surface of the honeycomb panel 21 are fixedly connected.
  • the magnetic circuit system 3 includes a U iron 31, a main magnet 32, a front piece 33 and a secondary magnet 34.
  • the middle part of the U iron 31 is recessed and the periphery extends upward.
  • the upper end of the U iron 31 is fixedly connected to the basin frame 1.
  • the main magnet 32, the front piece 33 and the auxiliary magnet 34 are stacked on the bottom of the U iron 31, and the voice coil 4 It is inserted in the gap between the upper end of the U iron 31 and the front piece 33.
  • the main magnet 32 is glued to the U iron 31, the front piece 33 is glued to the main magnet 32, and the auxiliary magnet 34 is glued to the front piece 33.
  • the three are coaxially arranged to ensure concentricity.
  • the voice coil 4 is fixedly connected to the diaphragm 2 through the voice coil frame 5.
  • the mid-range speaker also includes a bouncing wave 6, which is connected to the voice coil skeleton 5.
  • the elastic wave 6 is sleeved on the voice coil frame 5 and fixedly connected to the basin frame 1.
  • the frequency response test of the midrange speaker and the traditional midrange speaker shown in FIG. 1 of this embodiment were carried out and compared.
  • the dark frequency response curve is the frequency response curve of the midrange speaker shown in FIG. 1 of the embodiment
  • the light frequency response curve is the frequency response curve of the traditional midrange speaker.
  • FIG. 3 it can be seen that the high frequency extension of the midrange speaker shown in FIG. 1 of this embodiment is better than that of the traditional midrange speaker.
  • an off-axis 60° frequency response test was carried out on the midrange speaker shown in Fig. 1 and the traditional midrange speaker of this embodiment, and a comparison was made.
  • the dark frequency response curve is the off-axis 60° frequency response curve of the midrange speaker shown in FIG. 1 of the embodiment
  • the light-colored frequency response curve is the off-axis 60° frequency response curve of the traditional midrange speaker. It can be seen from FIG. 4 that the directivity of the midrange speaker shown in FIG. 1 of this embodiment is better than that of the traditional midrange speaker.

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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

本发明公开了一种中音扬声器，其工作范围能够延伸至20KHz，并改善扬声器的高频指向性。一种中音扬声器，包括盆架、设置于所述盆架上的振膜、设置于所述盆架上的磁路系统及连接于所述振膜的音圈，所述振膜包括具有正面和背面的蜂窝板及分别覆于所述蜂窝板正面和背面的覆膜，所述蜂窝板具有多个孔。

Description

一种中音扬声器
相关申请的交叉引用
本申请要求2019年4月2日提交的申请号为CN 201920435417.9的中国专利申请的优先权，其全部内容通过引用的方式并入本发明中。
技术领域
本发明涉及扬声器领域，特别涉及一种中音扬声器。
背景技术
对于传统的中音扬声器，频宽一般可以达到10KHz，且要求具有较强的指向性。然而，传统的中音扬声器很难将频宽进一步延伸到20KHz，指向性也很难改善。
发明内容
针对上述问题，本发明提供一种中音扬声器，其工作范围能够延伸至20KHz，并改善扬声器的高频指向性。
为达到上述目的，本发明采用的技术方案为：
一种中音扬声器，包括盆架、设置于所述盆架上的振膜、设置于所述盆架上的磁路系统及连接于所述振膜的音圈，所述振膜包括具有正面和背面的蜂窝板及分别覆于所述蜂窝板正面和背面的覆膜，所述蜂窝板具有多个孔。
在一实施例中，所述蜂窝板的所述孔为自所述蜂窝板的正面贯通至背面的通孔。
在一实施例中，所述蜂窝板的材料为纸、Nomex绝缘纸、铝和发泡材料中的一种或多种的组合。
在一实施例中，所述覆膜的材料为纸、玻纤、铝和Kevlar中的一种或多种的组合。
在一实施例中，所述振膜为平板状。
在一实施例中，所述振膜由所述蜂窝板及所述覆膜组成，所述振膜整体为平板状。
在一实施例中，所述振膜通过轭环连接于所述盆架，所述轭环和所述振膜的外缘固定连 接。
在一实施例中，所述轭环和所述蜂窝板正面的覆膜固定连接。
在一实施例中，所述磁路系统包括U铁、主磁钢、前片以及副磁钢，所述U铁固定连接于所述盆架，所述主磁钢、所述前片及所述副磁钢层叠设置于所述U铁的底部上，所述音圈插设于所述U铁的上端部和所述前片之间的间隙中。
在一实施例中，所述主磁钢胶合在所述U铁上，所述前片胶合在所述主磁钢上，所述副磁钢胶合在所述前片上。
在一实施例中，所述音圈通过音圈骨架固定连接于所述振膜。
在一实施例中，所述中音扬声器还包括弹波，所述弹波和所述音圈骨架连接。
在一实施例中，所述弹波套设于所述音圈骨架上并固定连接于所述盆架。
在一实施例中，所述振膜由所述蜂窝板及所述覆膜组成，所述振膜整体为平板状，所述振膜的外缘通过轭环固定连接于所述盆架；所述磁路系统包括U铁、主磁钢、前片以及副磁钢，所述U铁的中部凹陷而周缘向上延伸，所述U铁的上端部固定连接于所述盆架，所述主磁钢、前片及副磁钢层叠设置于U铁的底部上且同轴设置，所述音圈插设于所述U铁的上端部和所述前片之间的间隙中。
本发明采用以上方案，相比现有技术具有如下优点：
该中音扬声器中，振膜采用多孔的蜂窝板，可以将频宽延伸至20KHz，改善扬声器高频的指向性。
附图说明
为了更清楚地说明本发明的技术方案，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发明的一些实施例，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他的附图。
图1为根据本发明实施例的一种中音扬声器的结构示意图；
图2为图1中振膜的剖视图；
图3分别示出了本发明实施例的中音扬声器与传统中音扬声器的频率响应曲线。
图4分别示出了本发明实施例的中音扬声器与传统中音扬声器的离轴60°的频率响应曲线。
其中，
1、盆架；2、振膜；21、蜂窝板；210、孔；22、覆膜；3、磁路系统；31、U铁；32、主磁钢；33、前片；34、副磁钢；4、音圈；5、音圈骨架；6、弹波。
具体实施方式
下面结合附图对本的较佳实施例进行详细阐述，以使本发明的优点和特征能更易于被本领域的技术人员理解。在此需要说明的是，对于这些实施方式的说明用于帮助理解本发明，但并不构成对本发明的限定。
图1示出了根据本发明实施例的一种中音扬声器，其包括盆架1、设置于盆架1上的振膜2、设置于盆架1上的磁路系统3及连接于振膜2的音圈4。
参照图2所示，所述振膜2包括具有正面和背面的蜂窝板21及分别覆于蜂窝板21正面和背面的覆膜22，蜂窝板21具有多个孔210。也就是说，振膜2为由两层覆膜22和位于两层覆膜22之间的蜂窝板21构成的三层结构。蜂窝板21的孔210为自蜂窝板21的正面贯通至背面的通孔，孔210的形状为圆孔、方孔或六边形孔等。蜂窝板21的材料为纸、Nomex绝缘纸、铝或发泡材料(如发泡塑料或发泡金属等)，其中Nomex也称诺梅克斯，是一种间位芳纶，也称芳纶1313。覆膜22的材料为纸、玻纤、铝、Kevlar(凯夫拉)。
振膜2为平板状，具体地，蜂窝板21整体为平板状。
本实施例中，所述振膜2由所述蜂窝板21及所述覆膜22组成，所述振膜2整体为平板状。
振膜2通过轭环连接于盆架1，轭环和振膜2的外缘固定连接。具体地，轭环和蜂窝板21正面的覆膜22固定连接。
磁路系统3包括U铁31、主磁钢32、前片33以及副磁钢34。U铁31的中部凹陷而周缘向上延伸，U铁31的上端部固定连接于盆架1，主磁钢32、前片33及副磁钢34层叠设置 于U铁31的底部上，音圈4插设于U铁31的上端部和前片33之间的间隙中。主磁钢32胶合在U铁31上，前片33胶合在主磁钢32上，副磁钢34胶合在前片33上，三者同轴设置，保证同心度。
音圈4通过音圈骨架5固定连接于振膜2。中音扬声器还包括弹波6，弹波6和音圈骨架5连接。弹波6套设于音圈骨架5上并固定连接于盆架1。
参照图3所示，分别对本实施例图1所示的中音扬声器和传统中音扬声器进行了频率响应测试，并进行了比对。其中，深色的频响曲线为本实施例图1所示的中音扬声器的频响曲线，浅色的频响曲线为传统中音扬声器的频响曲线。由图3所示可知，本实施例图1所示的中音扬声器的高频延伸好于传统中音扬声器。
参照图4所示，分别对本实施例图1所示的中音扬声器和传统中音扬声器进行了离轴60°频率响应测试，并进行了比对。其中，深色的频响曲线为本实施例图1所示的中音扬声器的离轴60°频响曲线，浅色的频响曲线为传统中音扬声器的离轴60°频响曲线。由图4所示可知，本实施例图1所示的中音扬声器的指向性好于传统中音扬声器。
上述实施例只为说明本发明的技术构思及特点，是一种优选的实施例，其目的在于熟悉此项技术的人士能够了解本发明的内容并据以实施，并不能以此限定本发明的保护范围。

Claims (14)

  1. 一种中音扬声器，包括盆架、设置于所述盆架上的振膜、设置于所述盆架上的磁路系统及连接于所述振膜的音圈，其特征在于：所述振膜包括具有正面和背面的蜂窝板及分别覆于所述蜂窝板正面和背面的覆膜，所述蜂窝板具有多个孔。
  2. 根据权利要求1所述的中音扬声器，其特征在于：所述蜂窝板的所述孔为自所述蜂窝板的正面贯通至背面的通孔。
  3. 根据权利要求1所述的中音扬声器，其特征在于：所述蜂窝板的材料为纸、Nomex绝缘纸、铝和发泡材料中的一种或多种的组合。
  4. 根据权利要求1所述的中音扬声器，其特征在于：所述覆膜的材料为纸、玻纤、铝和Kevlar中的一种或多种的组合。
  5. 根据权利要求1所述的中音扬声器，其特征在于：所述振膜为平板状。
  6. 根据权利要求1所述的中音扬声器，其特征在于：所述振膜由所述蜂窝板及所述覆膜组成，所述振膜整体为平板状。
  7. 根据权利要求1所述的中音扬声器，其特征在于：所述振膜通过轭环连接于所述盆架，所述轭环和所述振膜的外缘固定连接。
  8. 根据权利要求7所述的中音扬声器，其特征在于：所述轭环和所述蜂窝板正面的覆膜固定连接。
  9. 根据权利要求1所述的中音扬声器，其特征在于：所述磁路系统包括U铁、主磁钢、前片以及副磁钢，所述U铁固定连接于所述盆架，所述主磁钢、所述前片及所述副磁钢层叠设置于所述U铁的底部上，所述音圈插设于所述U铁的上端部和所述前片之间的间隙中。
  10. 根据权利要求9所述的中音扬声器，其特征在于：所述主磁钢胶合在所述U铁上，所述前片胶合在所述主磁钢上，所述副磁钢胶合在所述前片上。
  11. 根据权利要求1所述的中音扬声器，其特征在于：所述音圈通过音圈骨架固定连接于所述振膜。
  12. 根据权利要求11所述的中音扬声器，其特征在于：所述中音扬声器还包括弹波，所述弹波和所述音圈骨架连接。
  13. 根据权利要求12所述的中音扬声器，其特征在于：所述弹波套设于所述音圈骨架上并固定连接于所述盆架。
  14. 根据权利要求1所述的中音扬声器，其特征在于：所述振膜由所述蜂窝板及所述覆膜组成，所述振膜整体为平板状，所述振膜的外缘通过轭环固定连接于所述盆架；所述磁路系统包括U铁、主磁钢、前片以及副磁钢，所述U铁的中部凹陷而周缘向上延伸，所述U铁的上端部固定连接于所述盆架，所述主磁钢、前片及副磁钢层叠设置于U铁的底部上且同轴设置，所述音圈插设于所述U铁的上端部和所述前片之间的间隙中。
PCT/CN2019/111689 2019-04-02 2019-10-17 一种中音扬声器 WO2020199554A1 (zh)

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US17/593,374 US11950072B2 (en) 2019-04-02 2019-10-17 Mid-range loudspeaker

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US20220150639A1 (en) 2022-05-12
JP3236921U (ja) 2022-03-31

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