WO2021000194A1 - 一种扬声器 - Google Patents

一种扬声器 Download PDF

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Publication number
WO2021000194A1
WO2021000194A1 PCT/CN2019/094094 CN2019094094W WO2021000194A1 WO 2021000194 A1 WO2021000194 A1 WO 2021000194A1 CN 2019094094 W CN2019094094 W CN 2019094094W WO 2021000194 A1 WO2021000194 A1 WO 2021000194A1
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WO
WIPO (PCT)
Prior art keywords
fixed
diaphragm
surrounding
away
arm
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Application number
PCT/CN2019/094094
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English (en)
French (fr)
Inventor
曹成铭
张龙
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)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.)
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Application filed by 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Priority to PCT/CN2019/094094 priority Critical patent/WO2021000194A1/zh
Priority to CN201921032360.4U priority patent/CN210641065U/zh
Publication of WO2021000194A1 publication Critical patent/WO2021000194A1/zh

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Classifications

    • 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
    • H04R9/06—Loudspeakers

Definitions

  • the utility model belongs to the technical field of electroacoustics, and particularly relates to a loudspeaker.
  • the technical problem to be solved by the utility model is to provide a loudspeaker, which aims to solve the problem in the related art that the sound-absorbing powder in the loudspeaker box will enter the loudspeaker through the assembly gap between the basin frame and the lower splint.
  • the first aspect of the embodiments of the present utility model provides a speaker, which includes a housing, a vibration system and a magnetic circuit system housed in the housing, and the housing includes fixing the vibration system and the magnetic circuit system
  • the vibrating system includes a diaphragm fixed on the top surface of the basin frame, and the magnetic circuit system includes a lower splint assembled on the bottom of the basin frame, characterized in that the basin frame is away from the vibration One side of the membrane is fixed with a rear shell covering the circumference of the basin frame and the lower splint.
  • the basin frame includes a surrounding portion surrounding the vibration system and the magnetic circuit system, and a support portion extending from an outer ring edge of the surrounding portion in a direction away from the diaphragm, and the rear shell covers The periphery of the supporting part and the lower splint.
  • the rear shell includes a top wall directly opposite to the lower splint, a side wall extending from the outer ring edge of the top wall in a direction close to the lower splint and surrounding the supporting portion, and a side wall from the side wall A fixing portion extending away from the top wall toward the direction of the diaphragm, and the fixing portion is fixed on the surrounding portion.
  • the fixing portion includes an inner side surface close to the surrounding portion, an outer side surface opposite to the inner side surface, and an upper surface connecting the inner side surface and the outer side surface, and the inner side surface and the surrounding portion fixed.
  • the fixing part is provided on the long axis side of the rear case.
  • the lower splint includes a main body portion facing the top wall and an extension portion bent and extended from the short axis side of the main body portion toward the surrounding portion, and the main body portion is embedded and fixed in the On the support.
  • the material of the rear shell is stainless steel, and the thickness of the rear shell is 0.1 mm.
  • the vibration system includes a diaphragm fixed on the top surface of the surrounding portion, a voice coil connected to one side of the diaphragm and driving the diaphragm to vibrate, and one end connected to the voice coil away from the
  • the circuit board at one end of the diaphragm, and the other end of the circuit board is sandwiched and fixed between the extension part and the surrounding part.
  • the circuit board is a flexible circuit board, and the circuit board includes a first fixing arm sandwiched and fixed between the extension part and the surrounding part, a second fixing arm fixed to the voice coil, An elastic arm connected between the first fixed arm and the second fixed arm and an extension arm extending from an end of the first fixed arm away from the second fixed arm in a direction away from the surrounding portion.
  • the vibration system further includes an elastic support member corresponding to the diaphragm, one end of the elastic support member is fixed to an end of the voice coil away from the diaphragm, and the other end of the elastic support member is clamped and fixed. Between the extension and the circuit board.
  • the utility model has the beneficial effect that: the basin frame of the utility model is fixed on the side away from the diaphragm to cover the circumference of the basin frame and the rear shell assembled on the lower splint at the bottom of the basin frame.
  • the assembly gap between the splints is completely sealed. After the speaker is applied to the speaker box, it can prevent the sound-absorbing powder filled in the speaker box from entering the speaker, thereby increasing the volume of the sound-absorbing powder filled in the speaker box.
  • Figure 1 is a schematic diagram of the overall structure of a speaker provided by an embodiment of the present invention.
  • Figure 2 is a schematic diagram of an exploded structure of a speaker provided by an embodiment of the present invention.
  • Fig. 3 is a schematic sectional view of the A-A plane of Fig. 1;
  • Figure 4 is a schematic cross-sectional view of the B-B plane of Figure 1;
  • Fig. 5 is an enlarged schematic diagram of part C in Fig. 4;
  • Figure 6 is a schematic view of the overall structure of the rear shell provided by an embodiment of the present invention.
  • Fig. 7 is a schematic diagram of a circuit board structure provided by an embodiment of the present invention.
  • the speaker includes a housing 10, a vibration system 20 and a magnetic circuit system 30 housed in the housing 10, and the housing 10 includes a fixed The basin frame 12 of the vibrating system 20 and the magnetic circuit system 30 and the front cover 11 covered on the basin frame 12, the vibration system 20 includes a diaphragm 21 fixed on the top surface of the basin frame 12, and the front cover 11 is covered with a gasket 4.
  • the magnetic circuit system 30 includes a lower clamping plate 32 mounted on the bottom of the basin frame 12.
  • the basin frame 12 includes a surrounding portion 121 surrounding the vibration system 20 and the magnetic circuit system 30, and a supporting portion 122 extending from the outer ring edge of the surrounding portion 121 in a direction away from the diaphragm 21, On the side of the surrounding portion 121 away from the diaphragm 21, a rear shell 5 covering the circumference of the supporting portion 122 and the lower clamping plate 32 is fixed.
  • the rear shell 5 includes a top wall 51 directly opposite to the lower splint 32, a side wall extending from the outer ring edge of the top wall 51 toward the lower splint 32 and surrounding the supporting portion 122, and A fixing portion 53 extending from one end of 52 away from the top wall 51 toward the direction close to the diaphragm 21 is fixed on the surrounding portion 121. Since the basin frame 12 and the lower splint 32 inevitably have gaps during assembly, and the rear shell 5 can cover these gaps, after the speaker is applied to the speaker box, the sound-absorbing powder filled in the speaker box can be prevented from entering the speaker, thereby increasing The volume of the sound-absorbing powder filled in the large speaker box.
  • the fixing portion 53 is provided on the long axis side 54 of the rear case 5.
  • the material of the rear shell 5 is stainless steel, which has high hardness and good corrosion resistance.
  • the thickness of the rear shell 5 is 0.1 mm, and the volume of the sound-absorbing powder filled in the speaker box is increased when the overall shape is increased by 0.2 mm.
  • the fixing portion 53 includes an inner side surface 531 close to the surrounding portion 121, an outer side surface 532 opposite to the inner side surface 531, and an upper surface 533 connecting the inner side surface 531 and the outer side surface 532, and the inner side surface 531 It is fixed to the surrounding part 121.
  • the fixing part 53 and the surrounding part 121 can be fixed by glue to ensure that the rear shell 5 can be firmly fixed on the basin frame.
  • the lower splint 32 includes a main body portion 321 facing the top wall 51 and an extension portion 322 bent and extended from the short axis side 3211 of the main body portion 321 toward the surrounding portion 121.
  • the main body portion 321 is embedded and fixed on the supporting portion 122.
  • the vibration system 20 includes a diaphragm 21 fixed on the top surface of the surrounding portion 121, a voice coil 22 connected to one side of the diaphragm 21 and driving the diaphragm 21 to vibrate, and one end connected to the voice coil 22 away from the diaphragm 21
  • the circuit board 24 at one end and the other end of the circuit board 24 are sandwiched and fixed between the extending portion 322 and the surrounding portion 121.
  • the circuit board 24 is a flexible circuit board.
  • the circuit board 24 includes a first fixing arm 241 sandwiched and fixed between the extension portion 322 and the surrounding portion 121, and a second fixing arm 241 fixed to the voice coil 22.
  • the arm 242 an elastic arm 243 connected between the first fixed arm 241 and the second fixed arm 242, and an extension arm 244 extending from an end of the first fixed arm 241 away from the second fixed arm 242 in a direction away from the surrounding portion 121.
  • the elastic arm 243 can cooperate with the first fixed arm 241 and the second fixed arm 242 to share the load borne by the circuit board 24, thereby enhancing the carrying capacity of the circuit board 24.
  • the vibration system 20 also includes an elastic support 23 corresponding to the diaphragm 21. One end of the elastic support 23 is fixed to an end of the voice coil 22 away from the diaphragm 21, and the other end of the elastic support 21 is clamped and fixed to the extension 322 and the circuit board 24. between.
  • the magnetic circuit system 30 includes an upper clamping plate 31 opposite to the lower clamping plate 32 and a magnetic steel 33 fixed between the upper clamping plate 31 and the lower clamping plate 32, and the upper clamping plate 31 is embedded and fixed on the surrounding portion 121.
  • the magnet 33 includes a main magnet 331, a secondary magnet 332 located on both sides of the main magnet 331, and a pole core 333 attached to the main magnet 331 and the secondary magnet 332, and the secondary magnets 332 are arranged at intervals on both sides of the main magnet 331 , And form a magnetic gap with the main magnet 331, and the voice coil 22 is fixedly arranged in the magnetic gap.
  • the pole core 333 attached to the surface of the main magnet 331 can conduct magnetism, converge the magnetic field, and improve the magnetic induction performance of the product.

Landscapes

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

Abstract

本实用新型提供了一种扬声器，其包括壳体、容置于所述壳体内部的振动系统和磁路系统，所述壳体包括固定所述振动系统和所述磁路系统的盆架，所述振动系统包括固定于所述盆架顶面的振膜，所述磁路系统包括装配于所述盆架底部的下夹板，所述盆架远离所述振膜一侧固定有包覆所述盆架四周及所述下夹板的后壳。在本实用新型中，盆架远离前盖一侧固定有包覆盆架四周以及装配在盆架底部的下夹板的后壳，对盆架和下夹板之间的装配缝隙形成完全密封，把扬声器应用到扬声器箱后，可以防止填充到扬声器箱中的吸音粉料进入扬声器中，从而增大扬声器箱灌装吸音粉料的体积。

Description

一种扬声器 技术领域
本实用新型属于电声技术领域，尤其涉及一种扬声器。
 背景技术
随着科技的快速发展，音频设备也不断快速发展，人们对音频设备的功能性要求越来越高，对于扬声器，越来越多人对其音频性能提出了较高的要求。相关技术中，盆架底部在装配下夹板时，盆架与下夹板之间会有缝隙，无法完全密封，把扬声器应用到扬声器箱后，填充到扬声器箱中的吸音粉料会进入扬声器中。
 技术问题
本实用新型所要解决的技术问题为提供一种扬声器，旨在解决相关技术中扬声器箱中的吸音粉料会通过盆架与下夹板的装配缝隙进入扬声器中的问题。
 技术解决方案
本实用新型实施例第一方面提供一种扬声器，其包括壳体、容置于所述壳体内部的振动系统和磁路系统，所述壳体包括固定所述振动系统和所述磁路系统的盆架，所述振动系统包括固定于所述盆架顶面的振膜，所述磁路系统包括装配于所述盆架底部的下夹板，其特征在于，所述盆架远离所述振膜一侧固定有包覆所述盆架四周及所述下夹板的后壳。
进一步地，所述盆架包括环绕所述振动系统以及所述磁路系统的环绕部以及自所述环绕部的外圈边缘朝远离所述振膜方向延伸的支承部，所述后壳包覆所述支承部四周及所述下夹板。
进一步地，所述后壳包括与所述下夹板正对的顶壁、自所述顶壁外圈边缘朝靠近所述下夹板方向延伸并环绕所述支承部的侧壁以及自所述侧壁远离所述顶壁一端朝靠近所述振膜方向延伸的固定部，所述固定部固定在所述环绕部上。
进一步地，所述固定部包括靠近所述环绕部的内侧面、与所述内侧面相对的外侧面以及连接所述内侧面和所述外侧面的上表面，所述内侧面与所述环绕部固定。
进一步地，所述固定部设置在所述后壳的长轴侧上。
进一步地，所述下夹板包括正对所述顶壁的主体部以及自所述主体部的短轴侧朝靠近所述环绕部弯折延伸的延伸部，所述主体部嵌设固定在所述支承部上。
进一步地，所述后壳的材质为不锈钢,所述后壳的厚度为0.1mm。
进一步地，所述振动系统包括固定于所述环绕部顶面的振膜、连接于所述振膜一侧并驱动所述振膜振动的音圈、以及一端连接在所述音圈远离所述振膜一端的电路板，所述电路板的另一端夹设固定在所述延伸部和所述环绕部之间。
进一步地，所述电路板为柔性电路板，所述电路板包括夹设固定在所述延伸部和所述环绕部之间的第一固定臂、与所述音圈固定的第二固定臂、连接在所述第一固定臂与所述第二固定臂之间的弹力臂以及自所述第一固定臂远离所述第二固定臂一端朝远离所述环绕部方向延伸的延伸臂。
进一步地，所述振动系统还包括与所述振膜相对应的弹性支撑件，所述弹性支撑件一端固定于所述音圈远离所述振膜一端，所述弹性支撑件另一端夹设固定在所述延伸部和所述电路板之间。
 有益效果
本实用新型与现有技术相比，有益效果在于：本实用新型的盆架远离振膜一侧固定有包覆盆架四周以及装配在盆架底部的下夹板的后壳，对盆架和下夹板之间的装配缝隙形成完全密封，把扬声器应用到扬声器箱后，可以防止填充到扬声器箱中的吸音粉料进入扬声器中，从而增大扬声器箱灌装吸音粉料的体积。
 附图说明
图1是本实用新型实施例提供的扬声器的整体结构示意图；
图2是本实用新型实施例提供的扬声器的分解结构示意图；
图3是图1的A-A面剖切示意图；
图4是图1的B-B面剖切示意图；
图5是图4中C部分的放大结构示意图；
图6是本实用新型实施例提供的后壳的整体结构示意图;
图7是本实用新型实施例提供的电路板结构示意图。
本实用新型的实施方式
下面结合附图和实施方式对本实用新型作进一步说明。
如图1和图2所示，是本实用新型实施例提供的一种扬声器，该扬声器包括壳体10、容置于壳体10内部的振动系统20和磁路系统30，壳体10包括固定振动系统20和磁路系统30的盆架12以及盖接于盆架12上的前盖11，振动系统20包括固定于盆架12顶面的振膜21，前盖11上盖接有垫片4，磁路系统30包括装配于盆架12底部的下夹板32。
进一步地，如图2至图4所示，盆架12包括环绕振动系统20以及磁路系统30的环绕部121以及自环绕部121的外圈边缘朝远离振膜21方向延伸的支承部122，环绕部121远离振膜21一侧固定有包覆支承部122四周及下夹板32的后壳5。
具体的，如图6所示，后壳5包括与下夹板32正对的顶壁51、自顶壁51外圈边缘朝靠近下夹板32方向延伸并环绕支承部122的侧壁以及自侧壁52远离顶壁51一端朝靠近振膜21方向延伸的固定部53，固定部53固定在环绕部121上。由于盆架12与下夹板32在装配时难免存在缝隙，而后壳5能够对这些缝隙进行覆盖，把扬声器应用到扬声器箱后，可以防止填充到扬声器箱中的吸音粉料进入扬声器中，从而增大扬声器箱灌装吸音粉料的体积。具体的，固定部53设置在后壳5的长轴侧54上。优选的，后壳5的材质为不锈钢，具有较高的硬度和良好耐腐蚀性能。后壳5的厚度为0.1mm，在整体外形增大0.2mm的情况下增大扬声器箱灌装吸音粉料的体积。
上述实施例中，如图5所示，固定部53包括靠近环绕部121的内侧面531、与内侧面531相对的外侧面532以及连接内侧面531和外侧面532的上表面533，内侧面531与环绕部121固定。固定部53与环绕部121之间可以通过打胶固定，保证后壳5能够牢固地固定在盆架上。另外，下夹板32包括正对顶壁51的主体部321以及自主体部321的短轴侧3211朝靠近环绕部121弯折延伸的延伸部322，主体部321嵌设固定在支承部122上。
上述实施例中，振动系统20包括固定于环绕部121顶面的振膜21、连接于振膜21一侧并驱动振膜21振动的音圈22、以及一端连接在音圈22远离振膜21一端的电路板24，电路板24的另一端夹设固定在延伸部322和环绕部121之间。优选的，如图7所示，电路板24为柔性电路板，电路板24包括夹设固定在延伸部322和环绕部121之间的第一固定臂241、与音圈22固定的第二固定臂242、连接在第一固定臂241与第二固定臂242之间的弹力臂243以及自第一固定臂241远离第二固定臂242一端朝远离环绕部121方向延伸的延伸臂244。弹力臂243能够配合第一固定臂241与第二固定臂242，分担电路板24承受的负载，从而增强电路板24的承载能力。振动系统20还包括与振膜21相对应的弹性支撑件23，弹性支撑件23一端固定于音圈22远离振膜21一端，弹性支撑件21另一端夹设固定在延伸部322和电路板24之间。
另外，磁路系统30则包括与下夹板32相对的上夹板31以及固定在上夹板31和下夹板32之间的磁钢33，上夹板31嵌设固定于环绕部121上。进一步地，磁钢33包括主磁331、位于主磁331的两侧的副磁332以及贴设在主磁331和副磁332上的极芯333，副磁332间隔设置在主磁331两侧，并与主磁331形成磁间隙，音圈22固定设置在磁间隙中。贴附在主磁331表面的极芯333能够起到导磁作用，汇聚磁场，提高产品的磁感应性能。
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：壳体、容置于所述壳体内部的振动系统和磁路系统，所述壳体包括固定所述振动系统和所述磁路系统的盆架，所述振动系统包括固定于所述盆架顶面的振膜，所述磁路系统包括装配于所述盆架底部的下夹板，其特征在于，所述盆架远离所述振膜一侧固定有包覆所述盆架四周及所述下夹板的后壳。
  2. 根据权利要求1所述的扬声器，其特征在于， 所述盆架包括环绕所述振动系统以及所述磁路系统的环绕部以及自所述环绕部的外圈边缘朝远离所述振膜方向延伸的支承部，所述后壳包覆所述支承部四周及所述下夹板。
  3. 根据权利要求2所述的扬声器，其特征在于，所述后壳包括与所述下夹板正对的顶壁、自所述顶壁外圈边缘朝靠近所述下夹板方向延伸并环绕所述支承部的侧壁以及自所述侧壁远离所述顶壁一端朝靠近所述振膜方向延伸的固定部，所述固定部固定在所述环绕部上。
  4. 根据权利要求3所述的扬声器，其特征在于，所述固定部包括靠近所述环绕部的内侧面、与所述内侧面相对的外侧面以及连接所述内侧面和所述外侧面的上表面，所述内侧面与所述环绕部固定。
  5. 根据权利要求3所述的扬声器，其特征在于，所述固定部设置在所述后壳的长轴侧上。
  6. 根据权利要求3所述的扬声器，其特征在于，所述下夹板包括正对所述顶壁的主体部以及自所述主体部的短轴侧朝靠近所述环绕部弯折延伸的延伸部，所述主体部嵌设固定在所述支承部上。
  7. 根据权利要求1至6中任意一项所述的扬声器，其特征在于，所述后壳的材质为不锈钢,所述后壳的厚度为0.1mm。
  8. 根据权利要求4所述的扬声器，其特征在于，所述振动系统包括固定于所述环绕部顶面的振膜、连接于所述振膜一侧并驱动所述振膜振动的音圈、以及一端连接在所述音圈远离所述振膜一端的电路板，所述电路板的另一端夹设固定在所述延伸部和所述环绕部之间。
  9. 根据权利要求8所述的扬声器，其特征在于，所述电路板为柔性电路板，所述电路板包括夹设固定在所述延伸部和所述环绕部之间的第一固定臂、与所述音圈固定的第二固定臂、连接在所述第一固定臂与所述第二固定臂之间的弹力臂以及自所述第一固定臂远离所述第二固定臂一端朝远离所述环绕部方向延伸的延伸臂。
  10. 根据权利要求9所述的扬声器，其特征在于，所述振动系统还包括与所述振膜相对应的弹性支撑件，所述弹性支撑件一端固定于所述音圈远离所述振膜一端，所述弹性支撑件另一端夹设固定在所述延伸部和所述电路板之间。
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CN212936184U (zh) * 2020-07-08 2021-04-09 瑞声科技(新加坡)有限公司 扬声器
CN112104930B (zh) * 2020-08-27 2022-05-03 瑞声新能源发展(常州)有限公司科教城分公司 扬声器箱
CN112165662B (zh) * 2020-10-22 2021-09-28 瑞声新能源发展(常州)有限公司科教城分公司 扬声器

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