WO2022006913A1 - 一种扬声器系统 - Google Patents

一种扬声器系统 Download PDF

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Publication number
WO2022006913A1
WO2022006913A1 PCT/CN2020/101488 CN2020101488W WO2022006913A1 WO 2022006913 A1 WO2022006913 A1 WO 2022006913A1 CN 2020101488 W CN2020101488 W CN 2020101488W WO 2022006913 A1 WO2022006913 A1 WO 2022006913A1
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WO
WIPO (PCT)
Prior art keywords
cavity
casing
bracket
housing
speaker
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PCT/CN2020/101488
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English (en)
French (fr)
Inventor
时阳
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
Priority to PCT/CN2020/101488 priority Critical patent/WO2022006913A1/zh
Publication of WO2022006913A1 publication Critical patent/WO2022006913A1/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 utility model relates to the technical field of sound and electricity, in particular to a loudspeaker system.
  • loudspeakers are widely used in current smart mobile devices.
  • people's pursuit of the quality of the music function of smart mobile devices is getting higher and higher, as a sound-emitting device in smart mobile devices, people are concerned about the acoustic performance of loudspeakers. The requirements are also getting higher and higher.
  • a speaker system in the related art usually includes a housing with a housing space and a speaker unit housed in the housing space.
  • the housing space is usually divided into a front cavity and a rear cavity, and the front cavity is between the speaker unit and the sound-emitting hole. cavity, and vice versa.
  • the volume of the rear cavity is limited by the foam after being assembled into the whole machine, which makes the volume smaller, which affects the acoustic performance of the speaker.
  • the speakers currently used are getting smaller and smaller, which also causes the back cavity of the speaker to become smaller and smaller, which seriously affects the low-frequency dive of the speaker unit, resulting in excessively sharp sound from the speaker and poor sound resolution. affects the sound quality of the speakers.
  • the purpose of the utility model is to provide a loudspeaker that increases the volume of the back cavity to improve the acoustic performance.
  • a speaker system which includes a casing with a receiving space, a cover body and a speaker unit assembled with the casing; it is characterized in that: the casing is provided with a surrounding forming a bracket of the accommodating space; the accommodating space is provided with a spacer protruding toward the accommodating space; the spacer and the bracket are surrounded to form a first cavity for accommodating and installing the speaker unit; the The spacer, the bracket, the speaker unit, and the cover surround a second cavity, the bracket includes an inner sidewall surrounding the second cavity, and the speaker system further includes an opening from the inner sidewall and an expansion cavity extending toward the interior of the housing, the expansion cavity being communicated with the second cavity.
  • the height of the expansion cavity in the direction perpendicular to the casing gradually decreases from the inner side wall to the interior of the casing.
  • the expansion cavity is integrally formed with the housing.
  • the bracket further includes an outer side wall opposite to the inner side wall; the housing is provided with a fixing block abutting against the outer side wall, and the expansion cavity penetrates the bracket and extends to the inside the fixed block.
  • the end of the bracket facing the cover body is provided with an annular mounting surface that is sealingly connected to the cover body, and the height of the fixing block in the direction perpendicular to the casing is lower than the annular mounting surface The height in the direction perpendicular to the casing.
  • the height of the spacer in the direction perpendicular to the casing is lower than the height of the annular mounting surface in the direction perpendicular to the casing.
  • the first cavity is provided with a support surface for installing the speaker unit.
  • the housing includes a bottom and a side wall surrounding and connected to the bottom;
  • the speaker unit includes a diaphragm close to the bottom and relatively spaced from the bottom at a certain distance, and the diaphragm is connected to the bottom.
  • the bottom forms a sound-emitting cavity, and the side wall of the casing is provided with a sound-emitting hole communicating with the sound-emitting cavity.
  • an encapsulation mesh component is provided on the sound outlet hole.
  • the encapsulation mesh assembly is sealed and connected to the edge of the sound outlet through a sealing gasket.
  • the beneficial effect of the present invention is that: under the condition that the volume of the second cavity (commonly referred to as the rear cavity) is constant, an expansion cavity communicated with the second cavity is provided on the inner side wall of the second cavity to increase the number of second cavity.
  • the volume of the two-chamber thereby improving the acoustic performance of the speaker.
  • FIG. 1 is a perspective structural diagram of a speaker system of the present invention.
  • FIG. 2 is a perspective structural view of the speaker system of the present invention without a cover.
  • FIG. 3 is a schematic view from another direction of FIG. 2 .
  • FIG. 4 is an exploded view of FIG. 2 .
  • FIG. 5 is a cross-sectional view taken along the direction A-A in FIG. 1 .
  • FIG. 6 is a cross-sectional view taken along the direction B-B in FIG. 1 .
  • the speaker system 100 includes a housing 1 having a receiving space, a cover 4 assembled with the housing, and a speaker unit 2 mounted on the housing.
  • the housing 1 includes a bracket 12 for forming a receiving space 11 , and a spacer for dividing the receiving space 11 into a first cavity 111 and a second cavity 112 is also provided in the housing 1 15.
  • the first cavity 111 is formed by the spacer 15 and the bracket 12.
  • the first cavity 111 is used to accommodate and install the speaker unit 2;
  • the second cavity 112 is formed by the spacer, the The bracket, the speaker unit and the cover body are formed around them, that is, the second cavity 112 serves as the rear cavity of the speaker unit 2 .
  • the stent 12 includes an inner sidewall 124 surrounding the second cavity 112 .
  • the speaker system 100 further includes an expansion cavity 131 which is opened from the inner side wall 124 and extends into the casing. That is, the opening of the expansion cavity 131 is provided on the inner side wall 124 , the expansion cavity 131 expands and extends into the interior of the housing, the space of the expansion cavity 131 is an additionally expanded space, and the expansion cavity 131 communicates with the second cavity 112 to expand.
  • the cavity 131 can be used as an expansion of the second cavity 112, so that the volume of the second cavity 112 is expanded on the original basis.
  • the housing 1 includes a bottom 10 and a side wall 16 surrounding and connected to the bottom 10 ; the spacer 15 is formed to protrude from the bottom 10 toward the receiving space, and the bracket 12 protrudes from the bottom 10 and surrounds the receiving space.
  • the bracket 12 further includes an outer side wall 125 opposite to the inner side wall 124 , a fixing block 13 is provided at the abutment to the outer side wall 125 , the bottom of the fixing block 13 is fixed on the bottom 10 of the housing 1 , and the expansion cavity 131 penetrates through. bracket 12 and go deep inside the fixing block 13 . That is, the interior of the fixed block 13 provides an expanded volume for the expansion cavity 131 .
  • the height of the expansion cavity 131 in the direction perpendicular to the casing gradually decreases from the inner side wall to the interior of the casing, that is, the inner diameter of the expansion cavity 131 gradually decreases.
  • This design is to increase the volume of the expansion cavity 131 as much as possible on the basis of ensuring that the fixed block 13 is not affected.
  • the bracket 12 and the expansion cavity 131 are integrally formed with the casing 1 .
  • the bracket 12 is an annular ridge extending continuously in a band shape.
  • the end of the bracket 12 facing the cover body is provided with an annular mounting surface 123 which is sealingly connected to the cover body, and the cover body 4 is assembled and assembled with the housing through the annular mounting surface 123 .
  • the height of the fixing block 13 in the direction perpendicular to the casing is lower than the height of the annular mounting surface 123 in the direction perpendicular to the casing.
  • the height of the spacer 15 in the direction perpendicular to the casing is lower than the height of the annular mounting surface 123 in the direction perpendicular to the casing. This facilitates the assembly of the cover 4 and the housing 1 .
  • the height of the spacer 15 is lower than the height of the annular mounting surface 120 so that the upper parts of the first cavity 111 and the second cavity 112 are still communicated with each other after the casing 1 is sealed.
  • a support surface 151 for installing the speaker unit is provided in the first cavity.
  • the speaker unit 2 is supported and fixed on the support surface 151 .
  • the size of the outer edge of the support surface 151 matches the size of the outer edge of the speaker unit 2, that is, the speaker unit 2 and the support surface 151 can be snapped and installed with each other, which facilitates installation and improves the speaker unit 2.
  • the speaker unit 2 includes a vibrating membrane 20, the vibrating membrane 20 is relatively spaced from the bottom by a certain distance, and the vibrating membrane 20 and the bottom 10 form a sounding cavity 1111.
  • the side wall 16 of the casing is provided with a sound outlet 14 which communicates with the sound cavity 1111 . Therefore, the system of the present invention emits sound through the side openings.
  • the bracket 12 is located at the edge of the casing 1
  • the spacer 15 is located inside the casing 1
  • the spacer 15 , the bracket 12 , the fixing block 13 and the casing 1 are all integrally formed.
  • the annular mounting surface 123 is disposed on the bracket 12 and surrounds the receiving space 11 .
  • the surface of the annular mounting surface 123 is flat and smooth, so as to facilitate sealing between the housing 1 and the cover 2 .
  • the inner side wall 124 is located in the second cavity 112
  • the fixing block 13 is located on the outer side wall 125 opposite to the inner side wall 124 .
  • the expansion cavity 131 is recessed from the opening of the inner side wall 124 toward the interior of the fixing block 13 , and the expansion cavity 131 communicates with the second cavity 112 .
  • the second cavity 112 of the present invention and the additional expansion cavity 131 are used as the rear cavity of the speaker unit 2 . It can be known from the relevant technical principles of loudspeakers that, under certain conditions, the larger the rear cavity and the better the sealing performance, the better the acoustic performance of the loudspeaker. Therefore, on the basis of not changing the overall volume of the speaker system, the speaker system 100 increases the expansion cavity 131 in a targeted manner, so that the volume of the rear cavity is expanded, thereby improving the acoustic performance of the speaker system and enabling the user to have a better experience. .
  • the expansion cavity 131 and the housing 1 adopt an integral molding technology.
  • the expansion cavity 131 can be produced by one-time molding using a mold with a sloping top structure, so as to avoid the problem of insufficient sealing caused by assembling multiple structures, and ensure the internal sealing effect of the speaker system.
  • the sound outlet 14 is provided with an encapsulation mesh assembly 3
  • the encapsulation mesh assembly 3 includes a metal shell 31 , a first sealing gasket 32 and a metal mesh 33 , and the metal shell 31 and the metal mesh 33 pass through
  • the first sealing gasket 32 is sealed and connected
  • the encapsulation mesh assembly 3 is used to encapsulate the sound outlet 14
  • the encapsulation mesh assembly 3 is sealed with the edge of the sound outlet 14 through the second sealing gasket 141 .
  • the expansion cavity 131 of the speaker system provided by the present invention is the expansion space of other remaining spaces of the housing 1 , which fully utilizes the space of the housing 1 , increases the volume of the rear cavity, and improves the acoustic performance of the speaker system 100 .
  • the speaker system 100 provided by the present invention increases the volume of the rear cavity 16 on the basis of not increasing the overall volume, improves the acoustic performance of the speaker system 100, saves materials, and reduces the production cost.
  • the more than 100 components of the speaker system adopt the integrated production technology, which improves the production efficiency: that is, the utility model improves the product performance and reduces the production cost. Therefore, the speaker system has good production efficiency.

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

Abstract

本实用新型提供了一种扬声器系统，包括具有收容空间的壳体、与所述壳体组合装配的盖体和扬声器单体；所述壳体内设有围绕形成所述收容空间的支架；所述收容空间内设有朝向所述收容空间凸出形成的间隔件；所述间隔件与所述支架围设形成收容安装所述扬声器单体的第一腔；所述间隔件、所述支架、所述扬声器单体以及所述盖体围设形成第二腔，所述支架包括围绕所述第二腔的内侧壁，所述扬声器系统还包括自所述内侧壁开口并向壳体内部延伸的扩展腔，所述扩展腔与所述第二腔连通。本实用新型提供的扬声器系统的扩展腔为所述壳体的其他剩余空间的扩展空间，充分利用了壳体空间，增大后腔的体积，改善扬声器系统的声学性能。

Description

一种扬声器系统 技术领域
本实用新型涉及声电技术领域，尤其涉及一种扬声器系统。
 背景技术
随着电子科技的发展，扬声器被大量应用于现在的智能移动设备中，由于人们对智能移动设备音乐功能品质的追求越来越高，作为智能移动设备中的发声器件，人们对于扬声器的声学性能要求也越来越高。
 技术问题
相关技术中的扬声器系统通常包括具有收容空间的壳体以及收容于该收容空间的扬声器单体，收容空间内通常会被分隔为前腔和后腔，前腔为扬声器单体与发声孔之间的腔体，后腔则反之。而后腔体积在装配到整机后受泡棉限制而使得体积较小，影响扬声器的声学性能。
不仅如此，目前使用的扬声器越来越小，这样也导致扬声器的后腔越来越小，严重影响到扬声器单元的低频下潜，从而导致扬声器发出的声音过尖且声音解析度变差，严重影响扬声器的音质。
因此，有必要提供一种增大后腔体积的扬声器解决上述问题。
 技术解决方案
本实用新型的目的在于提供一种增大后腔体积以提高声学性能的扬声器。
本实用新型的技术方案如下：提供一种扬声器系统，包括具有收容空间的壳体、与所述壳体组合装配的盖体和扬声器单体；其特征在于：所述壳体内设有围绕形成所述收容空间的支架；所述收容空间内设有朝向所述收容空间凸出形成的间隔件；所述间隔件与所述支架围设形成收容安装所述扬声器单体的第一腔；所述间隔件、所述支架、所述扬声器单体以及所述盖体围设形成第二腔，所述支架包括围绕所述第二腔的内侧壁，所述扬声器系统还包括自所述内侧壁开口并向壳体内部延伸的扩展腔，所述扩展腔与所述第二腔连通。
更优地，所述扩展腔于垂直所述壳体方向上的高度自所述内侧壁向壳体内部逐渐减小。
更优地，所述扩展腔与所述壳体一体成型。
更优地，所述支架还包括与所述内侧壁相背对的外侧壁；所述壳体上设有抵接所述外侧壁的固定块，所述扩展腔贯穿所述支架并延伸至所述固定块的内部。
更优地，所述支架面向所述盖体的端部设有与所述盖体密封相连的环形安装面，所述固定块于垂直所述壳体方向上的高度低于所述环形安装面于垂直所述壳体方向上的高度。
更优地，所述间隔件于垂直所述壳体方向上的高度低于所述环形安装面于垂直所述壳体方向上的高度。
更优地，所述第一腔内设有安装扬声器单体的支撑面。
更优地，所述壳体包括底部和围绕所述底部并与之相连的侧壁；所述扬声器单体包括靠近所述底部与所述底部相对间隔一定距离的振膜，所述振膜与所述底部形成发声腔，所述壳体的侧壁开设有与发声腔连通的出声孔。
更优地，所述出声孔上设有封装网组件。
更优地，所述封装网组件通过密封垫圈与所述出声孔的边缘密封相连。
 有益效果
本实用新型的有益效果在于：本实用新型在第二腔（通俗称呼为后腔）的体积一定的条件下，在第二腔的内侧壁开设与所述第二腔连通的扩展腔以增加第二腔的体积，进而提高扬声器的声学性能。
 附图说明
图1为本实用新型的扬声器系统的立体结构图。
图2为本实用新型的扬声器系统省略盖体的立体结构图。
图3为图2的另一方向的示意图。
图4为图2的分解图。
图5为图1中A-A方向的剖视图。
图6为图1中B-B方向的剖视图。
 本发明的最佳实施方式
下面结合附图和实施方式对本实用新型作进一步说明。
本实施例提供了一种扬声器系统。如图1-6所示，扬声器系统100包括具有收容空间的壳体1、与所述壳体组合装配的盖体4和安装于所述壳体的扬声器单体2。
参照图2-4，本实施例中，壳体1包括用于形成收容空间11的支架12，壳体1内还设有将收容空间11分割为第一腔111和第二腔112的间隔件15，具体的是，第一腔111由间隔件15与所述支架12围设形成，第一腔111用于收容安装所述扬声器单体2；第二腔112由所述间隔件、所述支架、所述扬声器单体以及所述盖体围设形成，即第二腔112作为扬声器单体2的后腔。支架12包括围绕第二腔112的内侧壁124。
在本实施例中，扬声器系统100还包括自所述内侧壁124开口并向壳体内部延伸的扩展腔131。即扩展腔131的开口设于内侧壁124上，扩展腔131向壳体内部扩展延伸，此扩展腔131的空间则为额外扩展出来的空间，扩展腔131与所述第二腔112连通，扩展腔131即可作为第二腔112的扩充，使第二腔112的体积在原来的基础上，得到扩大。
壳体1包括底部10和围绕所述底部10并与之相连的侧壁16；间隔件15自底部10朝向所述收容空间凸出形成，支架12自底部10凸出而并围绕收容空间。
更优地，支架12还包括与内侧壁124相背对的外侧壁125，抵接外侧壁125处设有固定块13，固定块13底部固定在壳体1的底部10上，扩展腔131贯穿支架12并深入固定块13内部。即固定块13的内部为扩展腔131提供扩展的体积。
如图5所示，扩展腔131于垂直所述壳体方向上的高度自所述内侧壁向壳体内部逐渐减小，即，扩展腔131的内部径值逐渐减小。此设计是在保证不影响固定块13的基础上尽可能地增大扩展腔131的容积。
本实施例中支架12，扩展腔131与所述壳体1一体成型。支架12呈带状连续延伸的环状凸条。支架12面向所述盖体的端部设有与所述盖体密封相连的环形安装面123，所述盖体4通过环形安装面123与所述壳体组合装配。
更具体的是，所述固定块13于垂直所述壳体方向上的高度低于所述环形安装面123于垂直所述壳体方向上的高度。所述间隔件15于垂直所述壳体方向上的高度低于所述环形安装面123于垂直所述壳体方向上的高度。这样有利于盖体4和壳体1的装配。同时，间隔件15的高度低于环形安装面120的高度以使得第一腔111与第二腔112在壳体1被密封后其上部仍然互相连通。
如图6所示，为了在第一腔111内安装扬声器单体2，在所述第一腔内设有安装扬声器单体的支撑面151。所述扬声器单体2支撑固定于支撑面151上。具体的是，支撑面151的外缘尺寸与扬声器单体2的外缘尺寸相匹配，即，扬声器单体2与支撑面151可互相卡合安装，便于安装的同时还提高了扬声器单体2的安装稳定性。所述扬声器单体2包括振膜20，振膜20靠近所述底部与所述底部相对间隔一定距离，所述振膜20与所述底部10形成发声腔1111。所述壳体的侧壁16开设有与发声腔1111连通的出声孔14。故，本实用新型系统为侧边开孔发声。
具体地，本实施例中，支架12位于壳体1的边沿，间隔件15位于壳体1内侧，间隔件15、支架12、固定块13与壳体1均为一体成型。环形安装面123设置于支架12上且沿收容空间11一周，环形安装面123表面平整光滑，便于将壳体1和盖体2之间密封。内侧壁124位于第二腔112内，固定块13位于内侧壁124所背对的外侧壁125上。扩展腔131自内侧壁124开口朝固定块13内部方向凹陷形成，扩展腔131与第二腔112连通。
本实用新型的第二腔112以及额外增设的扩展腔131作为扬声器单体2的后腔。由扬声器的相关技术原理可知，在一定条件下，后腔越大、密封性越好，则扬声器的声学性能越佳。因此，本扬声器系统100在不改变扬声器系统整体体积的基础上，针对性地增加了扩展腔131，使后腔容积得到扩展，进而改善本扬声器系统的声学性能，使用户具有更优的使用体验。
更优地，扩展腔131与壳体1采用一体成型技术。可选的，扩展腔131可利用斜顶结构的模具一次成型产出，以避免多个结构之间拼装所带来的密封性不足的问题，保证本扬声器系统内部密封效果。
具体地，如图4所示，出声孔14上设有封装网组件3，封装网组件3包括金属壳31、第一密封垫圈32和金属网33，金属壳31与金属网33之间通过第一密封垫圈32密封连接，封装网组件3用于封装出声孔14，封装网组件3通过第二密封垫圈141与出声孔14的边沿密封。
本实用新型提供的扬声器系统的扩展腔131为所述壳体1的其他剩余空间的扩展空间，充分利用了壳体1空间，增大后腔的体积，改善扬声器系统100的声学性能。
综上所述，本实用新型提供的扬声器系统100在不增加整体体积的基础上增大了后腔16容积，提高了本扬声器系统100的声学性能，并且节约了用料，降低了生产成本，且本扬声器系统100多个构件均采用一体成型的生产技术，提高了生产效率：即本实用新型在提高了产品性能的同时还降低了生产成本，因此，本扬声器系统具备良好的生产效益。
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. 一种扬声器系统，包括具有收容空间的壳体、与所述壳体组合装配的盖体和扬声器单体；其特征在于：所述壳体内设有围绕形成所述收容空间的支架；所述收容空间内设有朝向所述收容空间凸出形成的间隔件；所述间隔件与所述支架围设形成收容安装所述扬声器单体的第一腔；所述间隔件、所述支架、所述扬声器单体以及所述盖体围设形成第二腔，所述支架包括围绕所述第二腔的内侧壁，所述扬声器系统还包括自所述内侧壁开口并向壳体内部延伸的扩展腔，所述扩展腔与所述第二腔连通。
  2. 根据权利要求1所述的扬声器系统，其特征在于：所述扩展腔于垂直所述壳体方向上的高度自所述内侧壁向壳体内部逐渐减小。
  3. 根据权利要求1所述的扬声器系统，其特征在于：所述扩展腔与所述壳体一体成型。
  4. 根据权利要求1所述的扬声器系统，其特征在于：所述支架还包括与所述内侧壁相背对的外侧壁；所述壳体上设有抵接所述外侧壁的固定块，所述扩展腔贯穿所述支架并延伸至所述固定块的内部。
  5. 根据权利要求4所述的扬声器系统，其特征在于：所述支架面向所述盖体的端部设有与所述盖体密封相连的环形安装面，所述固定块于垂直所述壳体方向上的高度低于所述环形安装面于垂直所述壳体方向上的高度。
  6. 根据权利要求5所述的扬声器系统，其特征在于：所述间隔件于垂直所述壳体方向上的高度低于所述环形安装面于垂直所述壳体方向上的高度。
  7. 根据权利要求6所述的扬声器系统，其特征在于：所述第一腔内设有安装扬声器单体的支撑面。
  8. 根据权利要求1所述的扬声器系统，其特征在于：所述壳体包括底部和围绕所述底部并与之相连的侧壁；所述扬声器单体包括靠近所述底部与所述底部相对间隔一定距离的振膜，所述振膜与所述底部形成发声腔，所述壳体的侧壁开设有与发声腔连通的出声孔。
  9. 根据权利要求8所述的扬声器系统，其特征在于：所述出声孔上设有封装网组件。
  10. 根据权利要求9所述的扬声器系统，其特征在于：所述封装网组件通过密封垫圈与所述出声孔的边缘密封相连。
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