WO2021109185A1 - 扬声器箱 - Google Patents

扬声器箱 Download PDF

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Publication number
WO2021109185A1
WO2021109185A1 PCT/CN2019/124596 CN2019124596W WO2021109185A1 WO 2021109185 A1 WO2021109185 A1 WO 2021109185A1 CN 2019124596 W CN2019124596 W CN 2019124596W WO 2021109185 A1 WO2021109185 A1 WO 2021109185A1
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WO
WIPO (PCT)
Prior art keywords
air
housing
permeable
speaker box
retaining wall
Prior art date
Application number
PCT/CN2019/124596
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English (en)
French (fr)
Inventor
施胜荣
曾月
吕雪冬
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
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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
Publication of WO2021109185A1 publication Critical patent/WO2021109185A1/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein

Definitions

  • the invention relates to the field of electronic products, in particular to a speaker box.
  • the related art loudspeaker box includes a lower cover, an upper cover assembled with the lower cover to form an accommodation space, and a sounding unit accommodated in the accommodation space, and the sounding unit and the upper cover enclose a front cavity,
  • the sounding monomer, the lower cover and the upper cover jointly enclose a rear cavity.
  • a retaining wall higher than the sound-producing monomer is set in the upper cover, and a breathable spacer is attached to the retaining wall to isolate the sound-producing monomer from the rear cavity, and then in the rear cavity Filling with sound-absorbing particles to improve the low-frequency performance of the speaker box.
  • part of the rear cavity area leaks away from the sounding monomer, and the air flow is not smooth, which makes this part of the rear cavity area invalid.
  • the back cavity is equivalent to being blocked and cannot effectively improve the speaker performance.
  • the purpose of the present invention is to provide a loudspeaker box which can increase the air-permeable area of the rear cavity.
  • the present invention provides a loudspeaker box, which includes a housing with a housing space, a sound-producing unit housed in the housing space of the housing, and an air-permeable partition, the housing is protrudingly provided with a retaining wall, so The air-permeable partition is joined to the retaining wall, the sound-producing monomer separates the containing space into a front cavity and a rear cavity, and the sound-producing monomer is installed on the retaining wall, wherein the speaker box further includes a device A breathable member in the rear cavity, a fixing portion provided in the housing and extending to the receiving space, and a groove jointly surrounded by the fixing portion and the housing, and the breathable member is attached and fixed to the The fixing part covers the groove.
  • the rear cavity includes a first area directly opposite to the sound emitting monomer and a second area communicating with the first area and located on the side of the sound emitting monomer, and the air-permeable member is located in the second area.
  • the housing includes an upper cover and a lower cover assembled with the upper cover, the retaining wall extends from the upper cover to the accommodating space and is separated from the lower cover by a certain distance;
  • the lower cover extends to the containing space and is separated from the upper cover by a certain distance.
  • the distance from the retaining wall to the lower cover is greater than the height of the fixing part.
  • the air-permeable member is attached to the lower cover by heat melting.
  • the breathable member is any one of non-woven fabric or dust-free mesh fabric, nylon woven mesh or metal mesh.
  • the air-permeable member and the air-permeable spacer are staggered from each other.
  • the direction from the retaining wall to the lower cover is set as a first direction, and the orthographic projections of the air-permeable member and the air-permeable spacer on the lower cover in the first direction do not overlap each other.
  • the speaker box provided by the present invention is provided with a groove on the inner wall of the housing, and a ventilation member communicating with the groove is arranged in the rear cavity, which increases the effective ventilation area of the rear cavity of the speaker box and improves the performance of the rear cavity. Utilization rate. It effectively improves the low frequency sensitivity of the speaker box and reduces the resonance frequency of the speaker box.
  • Figure 1 is an exploded perspective view of the speaker box of the present invention when it is not filled with sound-absorbing particles;
  • Fig. 2 is a perspective view of the lower cover of the speaker box shown in Fig. 1;
  • Fig. 3 is a perspective view of the lower cover of the speaker box shown in Fig. 1 and the vent after being assembled;
  • FIG. 4 is a perspective view of the speaker box shown in FIG. 1 after being assembled and filled with sound-absorbing particles;
  • Figure 5 is a cross-sectional view taken along line A-A in Figure 3;
  • Fig. 6 is an enlarged view of part B shown in Fig. 4.
  • the speaker box 100 provided in accordance with the present invention includes a housing 10 with a receiving space 160, a sound-producing monomer 130 received in the receiving space 160 of the housing 10, a breathable isolator 140 and sound-absorbing particles 170.
  • a retaining wall 113 is protruded from the inner wall of the housing 10, and the sound emitting monomer 130 is installed in the retaining wall 113.
  • the air-permeable spacer 140 is joined to the retaining wall 113, and the sound-producing monomer 130 separates the receiving space 160 into a front cavity 161 and a rear cavity 162.
  • the sound-absorbing particles are contained in the rear cavity 162, and the air-permeable spacer 140 is joined to the retaining wall 113 to isolate the sound-emitting monomer 130 and the sound-absorbing particles 170.
  • the speaker box 100 further includes a vent 150 arranged in the rear cavity 162.
  • the housing 10 includes an upper cover 110 and a lower cover 120, and the upper cover 110 and the lower cover 120 are assembled to form the receiving space 160 inside.
  • the upper cover 110 includes a substantially flat top wall 111 and a side wall 112 formed by bending and extending along the edge of the top wall 111.
  • the side wall 112 is arranged around the top wall 111, and the side wall 112 is far away from the top wall 111.
  • a step portion 1121 is provided at one end of the top wall 111.
  • the retaining wall 113 extends from the top wall 111 of the upper cover 110 to the receiving space 160 and is separated from the lower cover 120 by a certain distance.
  • the retaining wall 113 and the top wall 111 enclose an installation groove 114, and the sound generating unit 130 is installed in the installation groove 114.
  • the height of the retaining wall 113 is not lower than the height of the sounding monomer 130 installed behind the mounting groove 114, and the air-permeable spacer 140 is joined to the retaining wall 113 at an end away from the top wall 111 to Cover and isolate the vocal unit 130.
  • the lower cover 120 includes a substantially flat bottom wall 121, a side wall 122 formed by bending and extending along the edge of the bottom wall 121, a fixing portion 124 extending from the bottom wall 121 to the receiving space 160, and a
  • the fixing portion 124 and the bottom wall 121 jointly surround a groove 123.
  • the fixing portion 124 is separated from the upper cover 110 by a certain distance, so that a larger rear cavity 162 can be formed to fill more sound-absorbing particles 170.
  • the side wall 122 is arranged around the bottom wall 121 in a circle. The side wall 122 resists and clamps the step portion 1121 of the upper cover 110 to fix the upper cover 110 and the lower cover 120 together.
  • the air-permeable member 150 is attached and fixed to the fixing portion 124 and covers the groove 123.
  • the air-permeable member 150 communicates with the groove 123 of the lower cover 120, and is used to increase the air-permeable area of the rear cavity 162, thereby improving the performance of the speaker box 100.
  • the air-permeable member 150 is any one of a non-woven fabric, a dust-free mesh, a nylon woven mesh, or a metal mesh, which is adhered to the fixing portion 124 by heat melting.
  • the air-permeable spacer 140 is joined to the retaining wall 113 to partition the receiving space 160 into the front cavity 161 and the rear cavity 162.
  • the rear cavity 162 includes a first area 1621 and a second area 1622 communicating with each other.
  • the first area 1621 and the sound emitting unit 130 are arranged directly opposite to each other, and the second area 1622 is located on the side of the sound emitting unit 130.
  • the air-permeable member 150 is located in the second area 1622.
  • the air-permeable spacer 140 is spaced from the bottom wall 121 to form the first area 1621; the side walls 112, the side walls 122 and the retaining wall 113 are spaced to form the second area 1622.
  • the ventilation area of the entire rear cavity 162 is increased.
  • the air-permeable member 150 is used to communicate with the groove 123 to increase the air permeability of the second region 1622 away from the sound-producing monomer 130, so that the rear cavity 162
  • the airflow in the first area 1621 and the second area 1622 is smooth, so as to prevent the second area 1622 from being blocked.
  • the air-permeable member 150 and the air-permeable spacer 140 are staggered.
  • the direction from the retaining wall 113 to the lower cover 120 is set to the first direction 200, and the air-permeable member 150 and the air-permeable spacer 140
  • the orthographic projections on the lower cover 120 along the first direction 200 do not overlap each other.
  • the distance H1 from the retaining wall 113 to the bottom wall 121 of the lower cover 120 is greater than the height H2 of the fixing portion 124, which is more favorable for the smooth airflow of the first area 1621 and the second area 1622.
  • the speaker box provided by the present invention is provided with a vent in the rear cavity, and the vent is fixed to the fixing part of the lower cover and covers the groove.
  • the speaker box is filled with sound-absorbing particles.
  • the effective air-permeable area of the rear cavity improves the utilization rate of the rear cavity, effectively improves the low-frequency sensitivity of the speaker box, and reduces the resonance frequency of the speaker box.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

本发明提供了一种扬声器箱，其包括具有收容空间的外壳、收容于所述外壳的收容空间内的发声单体以及透气隔离件，所述外壳凸设有挡墙，所述透气隔离件与所述挡墙接合，所述发声单体将所述收容空间分隔成前腔和后腔，所述发声单体安装于所述挡墙内，其中，所述扬声器箱还包括设于所述后腔内的透气件、设于所述外壳并向所述收容空间延伸的固定部和由固定部和所述外壳共同围设的凹槽，所述透气件贴合固定于所述固定部并覆盖所述凹槽。扬声器箱通过在外壳内壁设置凹槽，后腔内设置与该凹槽相通的透气件，增加了扬声器箱的后腔的有效透气面积，提高了后腔的利用率，有效提升了扬声器箱的低频灵敏度，并降低了扬声器箱的谐振频率。

Description

扬声器箱 技术领域
本发明涉及电子产品领域，尤其涉及一种扬声器箱。
 背景技术
随着移动互联网时代的到来，智能移动设备的数量不断上升。而在众多移动设备之中，手机无疑是最常见、最便携的移动终端设备。目前，手机的功能极其多样，其中之一便是高品质的音乐功能，因此，用于播放声音的扬声器箱被大量应用到现在的智能移动设备之中。
相关技术的所述扬声器箱包括下盖、与该下盖组配形成收容空间的上盖以及收容于该收容空间内的发声单体，所述发声单体与所述上盖围成前腔，所述发声单体与所述下盖及所述上盖共同围成后腔。为了增加所述扬声器箱的低频声学性能，在上盖内设置高于发声单体的挡墙，并在挡墙上贴合透气隔离件，将发声单体与后腔隔绝，然后在后腔内灌装吸音颗粒以改善扬声器箱的低频性能。但是，部分后腔区域远离发声单体泄露，气流不通畅，导致该部分后腔区域无效，后腔等同于被堵死，不能有效提升扬声器性能。
因此，必须提供一种新的扬声器箱以解决上述技术问题。
 技术问题
本发明的目的在于提供一种能增加后腔透气面积的扬声器箱。
 技术解决方案
为了达到上述目的，本发明提供了一种扬声器箱，其包括具有收容空间的外壳、收容于所述外壳的收容空间内的发声单体以及透气隔离件，所述外壳凸设有挡墙，所述透气隔离件与所述挡墙接合，所述发声单体将所述收容空间分隔成前腔和后腔，所述发声单体安装于所述挡墙，其中，所述扬声器箱还包括设于所述后腔内的透气件、设于所述外壳并向所述收容空间延伸的固定部和由固定部和所述外壳共同围设的凹槽，所述透气件贴合固定于所述固定部并覆盖所述凹槽。
优选地，所述后腔包括与发声单体正对的第一区域和与第一区域相通并位于发声单体一侧的第二区域，所述透气件位于所述第二区域。
优选地，所述外壳包括上盖和与上盖组接的下盖，所述挡墙自所述上盖向所述收容空间延伸并与所述下盖相隔一定距离；所述固定部自所述下盖向所述收容空间延伸并与所述上盖相隔一定距离。
优选地，所述挡墙到所述下盖的距离大于所述固定部的高度。
优选地，所述透气件通过热熔的方式贴合于所述下盖。
优选地，所述透气件为无纺布或无尘网布、尼龙编织网或金属网中的任一种。
优选地，所述透气件与所述透气隔离件相互错开。
优选地，所述挡墙到所述下盖的方向设为第一方向，所述透气件与所述透气隔离件沿所述第一方向在所述下盖上的正投影互不重叠。
 有益效果
与相关技术相比，本发明提供的扬声器箱通过在外壳内壁设置凹槽，后腔内设置与该凹槽相通的透气件，增加了扬声器箱的后腔的有效透气面积，提高了后腔的利用率。有效提升了扬声器箱的低频灵敏度，并降低了扬声器箱的谐振频率。
 附图说明
为了更清楚地说明本发明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它的附图，其中：
图1为本发明扬声器箱未填充吸声颗粒时的立体分解图；
图2为图1所示的所述扬声器箱的下盖的立体图；
图3为图1所示的所述扬声器箱的下盖与透气件组装后的立体图；
图4为图1所示的扬声器箱组装且填充吸声颗粒后的立体图；
图5为沿图3中A-A线的剖视图；
图6为图4所示B部分的放大图。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明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发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，都属于本发明保护的范围。
请同时参阅图1-6，根据本发明提供的扬声器箱100包括具有收容空间160的外壳10、收容于外壳10的收容空间160内的发声单体130、透气隔离件140和吸声颗粒170。所述外壳10的内壁凸设有挡墙113，所述发声单体130安装于所述挡墙113内。所述透气隔离件140与所述挡墙113接合，所述发声单体130将所述收容空间160分隔成前腔161和后腔162。所述吸声颗粒收容于所述后腔162，所述透气隔离件140与所述挡墙113接合，以隔离所述发声单体130和所述吸声颗粒170。所述扬声器箱100还包括设于所述后腔162内的透气件150。
具体地，所述外壳10包括上盖110和下盖120，所述上盖110和所述下盖120组接并在内部形成所述收容空间160。所述上盖110包括大致呈平板状的顶壁111以及沿顶壁111的边沿弯折延伸形成的侧壁112，所述侧壁112围绕顶壁111一周设置，所述侧壁112远离所述顶壁111的一端设有阶梯部1121。所述挡墙113自上盖110的所述顶壁111向所述收容空间160延伸并与所述下盖120相隔一定距离。所述挡墙113与所述顶壁111围合形成安装槽114，所述发声单体130安装于所述安装槽114内。其中，所述挡墙113的高度不低于所述发声单体130安装在安装槽114后的高度，所述透气隔离件140与所述挡墙113远离所述顶壁111的一端接合，以遮盖隔离所述发声单体130。
所述下盖120包括大致呈平板状的底壁121、沿底壁121的边沿弯折延伸形成的侧墙122、自所述底壁121向所述收容空间160延伸的固定部124和由所述固定部124和所述底壁121共同围设的凹槽123。所述固定部124与所述上盖110相隔一定距离，便于形成更大的后腔162以填充更多的吸声颗粒170。所述侧墙122围绕所述底壁121一周设置。所述侧墙122与所述上盖110的阶梯部1121抵持并卡固，使上盖110与下盖120固定在一起。所述透气件150贴合固定于所述固定部124并覆盖所述凹槽123。所述透气件150与所述下盖120的所述凹槽123相通，用于增加所述后腔162的透气面积，从而提高所述扬声器箱100的性能。可选地，所述透气件150为无纺布或无尘网布、尼龙编织网或金属网中的任一种，其通过热熔的方式贴合于所述固定部124。
进一步地，所述透气隔离件140与所述挡墙113接合将所述收容空间160分隔成所述前腔161和所述后腔162。所述后腔162包括相互连通的第一区域1621和第二区域1622。所述第一区域1621与所述发声单体130正对设置，所述第二区域1622位于所述发声单体130一侧。所述透气件150位于所述第二区域1622内。具体地，所述透气隔离件140与所述底壁121间隔形成所述第一区域1621；所述侧壁112、侧墙122和挡墙113间隔形成所述第二区域1622。由于在后腔162的第一区域1621和第二区域1622内分别设有隔离透气件140和透气件150，使得整个后腔162的透气面积增大。当在所述后腔162内填充吸引颗粒170后，利用透气件150与所述凹槽123相通，增加远离发声单体130的第二区域1622的透气性，使所述后腔162的所述第一区域1621和所述第二区域1622的气流顺畅，避免第二区域1622堵死。所述透气件150与所述透气隔离件140相互错开，具体地，所述挡墙113到所述下盖120的方向设为第一方向200，所述透气件150与所述透气隔离件140沿所述第一方向200在所述下盖120上的正投影互不重叠。所述挡墙113到下盖120的底壁121的距离H1大于所述固定部124的高度H2，从而更有利于所述第一区域1621和所述第二区域1622气流顺畅。
与相关技术相比，本发明提供的扬声器箱通过在后腔内设置透气件，所述透气件贴合固定于所述下盖的固定部并覆盖所述凹槽增加了填充吸音颗粒后扬声器箱后腔的有效透气面积，提高了后腔的利用率，有效提升了扬声器箱的低频灵敏度，并降低了扬声器箱的谐振频率。
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 (8)

  1. 一种扬声器箱，其包括具有收容空间的外壳、收容于所述外壳的收容空间内的发声单体以及透气隔离件，所述外壳凸设有挡墙，所述透气隔离件与所述挡墙接合，所述发声单体将所述收容空间分隔成前腔和后腔，所述发声单体安装于所述挡墙内，其特征在于，所述扬声器箱还包括设于所述后腔内的透气件、设于所述外壳并向所述收容空间延伸的固定部和由固定部和所述外壳共同围设的凹槽，所述透气件贴合固定于所述固定部并覆盖所述凹槽。
  2. 根据权利要求1所述的扬声器箱，其特征在于，所述后腔包括与发声单体正对的第一区域和与第一区域相通并位于发声单体一侧的第二区域，所述透气件位于所述第二区域。
  3. 根据权利要求1所述的扬声器箱，其特征在于，所述外壳包括上盖和与上盖组接的下盖，所述挡墙自所述上盖向所述收容空间延伸并与所述下盖相隔一定距离；所述固定部自所述下盖向所述收容空间延伸并与所述上盖相隔一定距离。
  4. 根据权利要求3所述的扬声器箱，其特征在于，所述挡墙到所述下盖的距离大于所述固定部的高度。
  5. 根据权利要求4所述的扬声器箱，其特征在于，所述透气件通过热熔的方式贴合于所述下盖。
  6. 根据权利要求1所述的扬声器箱，其特征在于，所述透气件为无纺布或无尘网布、尼龙编织网或金属网中的任一种。
  7. 根据权利要求4所述的扬声器箱，其特征在于，所述透气件与所述透气隔离件相互错开。
  8. 根据权利要求7所述的扬声器箱，其特征在于，所述挡墙到所述下盖的方向设为第一方向，所述透气件与所述透气隔离件沿所述第一方向在所述下盖上的正投影互不重叠。
PCT/CN2019/124596 2019-12-02 2019-12-11 扬声器箱 WO2021109185A1 (zh)

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CN111836177B (zh) * 2020-07-22 2021-09-17 歌尔股份有限公司 发声器件
CN114640931B (zh) * 2022-03-11 2023-11-21 美特科技(苏州)有限公司 扬声器
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US20110223864A1 (en) * 2010-03-14 2011-09-15 Victor Kingsun Wai Ear Tip Method and Apparatus
CN207968912U (zh) * 2018-01-29 2018-10-12 瑞声科技(新加坡)有限公司 扬声器箱
CN208739412U (zh) * 2018-10-18 2019-04-12 歌尔股份有限公司 发声器模组
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CN209526864U (zh) * 2017-08-18 2019-10-22 瑞声科技(新加坡)有限公司 扬声器箱
CN207968912U (zh) * 2018-01-29 2018-10-12 瑞声科技(新加坡)有限公司 扬声器箱
CN208739412U (zh) * 2018-10-18 2019-04-12 歌尔股份有限公司 发声器模组

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