WO2020134460A1 - 扬声器箱 - Google Patents

扬声器箱 Download PDF

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Publication number
WO2020134460A1
WO2020134460A1 PCT/CN2019/113320 CN2019113320W WO2020134460A1 WO 2020134460 A1 WO2020134460 A1 WO 2020134460A1 CN 2019113320 W CN2019113320 W CN 2019113320W WO 2020134460 A1 WO2020134460 A1 WO 2020134460A1
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WO
WIPO (PCT)
Prior art keywords
cavity
sound
housing
speaker box
independent
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/CN2019/113320
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English (en)
French (fr)
Inventor
时阳
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
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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 WO2020134460A1 publication Critical patent/WO2020134460A1/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2803—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means for 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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
    • H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding for 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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture

Definitions

  • the utility model relates to the field of electroacoustic conversion, in particular to a speaker box.
  • the speaker box serves as a voice playback device, and its design directly affects the voice performance of mobile communication equipment products. In order to meet the market's demand for thinness and high sound quality, higher requirements are placed on the design of the speaker box.
  • the speaker box includes a housing with a housing space and a sound-generating monomer, the sound-generating monomer divides the housing space into a front cavity and a rear cavity, and the rear cavity is also provided with a separate cavity filled with a sound-absorbing material, usually A spacer is provided at the open end of the independent cavity to prevent the sound absorbing material from entering the rear cavity.
  • the spacer is usually a flat-plate structure, and the space of the rear cavity is not fully utilized due to the irregular shape of the speaker box shell
  • the purpose of the present invention is to overcome the above technical problems, to provide a simple structure and make full use of the back cavity space to increase the independent cavity speaker box.
  • the present invention provides a speaker box, including a housing with a housing space and a sound-generating monomer accommodated in the housing, the sound-generating monomer divides the housing space into a front cavity And the rear cavity, the housing is provided with sound holes, the front cavity is in communication with the sound holes, the housing is provided with a retaining wall corresponding to the position of the rear cavity, and the rear cavity corresponds to the barrier
  • the wall is provided with a ventilating isolator, the retaining wall and the ventilating isolator cooperate to isolate a part of the rear cavity to form an independent cavity, the independent cavity is filled with sound absorbing material, and the ventilating isolator is provided with a Protrusion extending out of the direction of the independent cavity Department.
  • the air-permeable separator is a non-woven fabric separator, and the raised portion is formed by a thermoplastic process.
  • the air-permeable separator is a metal separator, and the protrusion is formed by a stamping process.
  • the housing is provided with a filling hole corresponding to the position of the independent cavity, the sound absorbing material is injected into the independent cavity through the filling hole, and a sealing member is provided at the filling hole The sound absorbing material is encapsulated in the independent cavity.
  • the sealing member is a PET separator.
  • the housing includes a lower cover and an upper cover that surrounds the lower cover to form the storage space, and the retaining wall is formed by the upper cover extending in the direction of the lower cover.
  • the sound-generating monomer and the upper cover enclose the front cavity, the sound-generating monomer, the lower cover, and the upper cover together enclose the rear cavity, and the breathable spacer cover is fixed to the A side of the retaining wall close to the lower cover forms an independent cavity together with the retaining wall and the upper cover.
  • the retaining wall and the upper cover are integrally injection molded.
  • the air-permeable isolator of the speaker box provided by the present invention is provided with a convex portion that protrudes away from the independent cavity, and the convex portion makes full use of the space of the rear cavity to increase
  • the volume of the large independent cavity improves the filling amount of the sound absorbing material, and the side of the convex portion can also increase the air permeability and improve the acoustic performance.
  • FIG. 1 is a three-dimensional structural schematic diagram of a speaker box provided by the utility model
  • FIG. 2 is an exploded view of the stereo structure of the speaker box shown in FIG. 1;
  • FIG. 3 is an exploded view of the perspective structure of the speaker box shown in FIG. 1 from another perspective;
  • FIG. 4 is a cross-sectional view taken along line A-A in FIG. 1.
  • the present invention provides a speaker box 100, the speaker box 100 includes an upper cover 1, a lower cover 2, a sound-generating monomer 3, a breathable spacer 4, a steel sheet 5 and ⁇ 6 ⁇ Sealing 6.
  • the upper cover 1 is provided on the lower cover 2 and cooperates with the lower cover 2 to form an accommodation space 10, the sound-generating monomer 3 is accommodated in the accommodation space 10 and the accommodation space 10 Divided into a front cavity 101 and a rear cavity 102, specifically, the sound-generating monomer 3 and the upper cover 1 enclose the front cavity 101, the sound-generating monomer 3, the lower cover 2 and the upper cover 1 Together form the back cavity 102.
  • the upper cover 1 is provided with a steel sheet 5 at a position facing the sound-generating monomer 3, the steel sheet 5 is provided on the upper cover 1, the sound-generating monomer 3 and the steel The sheets 5 are spaced apart to form the front cavity 101.
  • the structural strength of the steel sheet can be made very thin to increase the volume of the front cavity.
  • the steel sheet 5 can be integrally injection molded with the upper cover 1 to form a seal.
  • the top cover 1 is pasted and fixed to form a seal. Of course, the top cover 1 may not have the structure of the steel sheet 5.
  • the upper cover 1 is also provided with a sound output hole 14, and the front cavity 101 communicates with the sound output hole 14 for sound emission.
  • the upper cover 1 includes a top wall 11 and a retaining wall 12 extending from the top wall 11 toward the lower cover 2, and the retaining wall 12 cooperates with the top wall 11 to form an opening In the independent cavity 30, the opening faces the side of the lower cover 2; the independent cavity 30 is filled with a sound absorbing material, which can effectively improve the low-frequency acoustic performance of the speaker box 100.
  • the top wall 11 and the retaining wall 12 are an integral injection molding structure.
  • the breathable spacer 4 is located in the rear cavity 102, and the cover is fixed to the side of the retaining wall 12 near the lower cover 2 to seal the opening and cooperate with the top wall 11 and the The retaining wall 12 isolates a part of the rear cavity 102 to form the independent cavity 30.
  • the air-permeable separator 4 is provided with a convex portion 41 that protrudes and extends in a direction away from the independent cavity 30, that is, the convex portion 41 is protruded and provided toward the lower cover 2 41
  • the convex portion 41 is protruded and provided toward the lower cover 2 41
  • the side surface of the raised portion 41 can also increase air permeability, thereby improving acoustic performance.
  • the air-permeable separator 4 and the retaining wall 12 may be formed by injection molding or adhesive bonding.
  • the air-permeable separator 4 is a non-woven fabric separator, and the protrusion 41 is formed by a thermoplastic process.
  • the breathable separator 4 is a metal separator, and the protrusion 41 is formed by a stamping process.
  • the breathable spacer 4 can also be made of other materials, which is not limited by the present invention.
  • the upper cover 1 further includes a filling hole 13 provided through the top wall 11, and the sealing member 6 covers the filling hole 13.
  • the sound absorbing material is filled into the independent cavity 30 through the filling hole 13, and then the filling hole 13 is closed with the sealing member 6 to complete the filling operation.
  • the sealing member 6 is a PET separator.
  • the speaker box 100 is placed horizontally, and the sound-emitting side of the sound-generating unit 3 faces upward.
  • the upper side of the upper cover 1 is defined as the top end, and others The orientation of the components is consistent with the upper cover 1.
  • the air-permeable separator of the speaker box provided by the present invention is provided with a convex portion that extends away from the independent cavity, and the convex portion makes full use of the space of the rear cavity to increase
  • the volume of the large independent cavity improves the filling amount of the sound absorbing material, and the side of the convex portion can also increase the air permeability and improve the acoustic performance.

Landscapes

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

Abstract

本实用新型提供了一种扬声器箱，包括具有收容空间的壳体和收容于所述壳体内的发声单体，所述发声单体将所述收容空间分隔成前腔和后腔，所述壳体设有出声孔，所述前腔与所述出声孔连通，所述壳体对应所述后腔位置设有挡墙，所述后腔内对应所述挡墙设置透气隔离件，所述挡墙与所述透气隔离件配合在所述后腔内隔离出一部分形成独立腔体，所述独立腔体内填充吸音材料，所述透气隔离件设有向远离所述独立腔体方向凸出延伸的凸起部。本实用新型的扬声器箱可以充分利用后腔的空间以增大独立腔体的空间，提高独立腔体的透气性，改善扬声器箱的声学性能。

Description

扬声器箱
技术领域
[0001] 本实用新型涉及电声转换领域， 尤其涉及一种扬声器箱。
背景技术
[0002] 近年来随着移动通信技术的快速发展， 消费者越来越多地使用带有语音功能的 移动通讯设备， 例如： 便携式电话、 掌上游戏机及手提电脑等。 扬声器箱作为 语音的播放装置， 其设计好坏直接影响移动通讯设备产品的语音性能。 为了满 足市场对于薄型化及高音质的需求， 对扬声器箱的设计提出了更高的要求。
[0003] 相关技术中， 扬声器箱包括具收容空间的外壳及发声单体， 发声单体将收容空 间分隔成前腔和后腔， 所述后腔还设有填充吸音材料的独立腔体， 通常在独立 腔体的开口端设有隔离件以防止吸音材料进入后腔， 所述隔离件通常为平板状 结构， 而由于扬声器箱外壳形状不规则， 导致所述后腔的空间未达到充分利用
[0004] 因此， 有必要提供一种新的扬声器箱以解决上述缺陷。
发明概述
技术问题
[0005] 本实用新型的目的是克服上述技术问题， 提供一种结构简单并充分利用后腔空 间以增大独立腔体的扬声器箱。
问题的解决方案
技术解决方案
[0006] 为了实现上述目的， 本实用新型提供一种扬声器箱， 包括具有收容空间的壳体 和收容于所述壳体内的发声单体， 所述发声单体将所述收容空间分隔成前腔和 后腔， 所述壳体设有出声孔， 所述前腔与所述出声孔连通， 所述壳体对应所述 后腔位置设有挡墙， 所述后腔内对应所述挡墙设置透气隔离件， 所述挡墙与所 述透气隔离件配合在所述后腔内隔离出一部分形成独立腔体， 所述独立腔体内 填充吸音材料， 所述透气隔离件设有向远离所述独立腔体方向凸出延伸的凸起 部。
[0007] 优选的， 所述透气隔离件为无纺布隔离件， 所述凸起部通过热塑工艺形成。
[0008] 优选的， 所述透气隔离件为金属隔离件， 所述凸起部通过冲压工艺形成。
[0009] 优选的， 所述壳体对应所述独立腔体的位置设置填充孔， 所述吸音材料通过所 述填充孔注入到所述独立腔体， 所述填充孔处设有封合件将所述吸音材料封装 于所述独立腔体内。
[0010] 优选的， 所述封合件为 PET隔离件。
[0011] 优选的， 所述壳体包括下盖和与所述下盖组配围成所述收容空间的上盖， 所述 挡墙由所述上盖向所述下盖方向延伸形成， 所述发声单体与所述上盖围成所述 前腔， 所述发声单体、 所述下盖及所述上盖共同围成所述后腔， 所述透气隔离 件盖设固定于所述挡墙的靠近所述下盖的一侧并与所述挡墙及所述上盖共同围 成所述独立腔体。
[0012] 优选的， 所述挡墙与所述上盖一体注塑成型。
发明的有益效果
有益效果
[0013] 与相关技术相比， 本实用新型提供的扬声器箱的透气隔离件设有向远离所述独 立腔体方向凸出延伸的凸起部， 所述凸起部充分利用后腔的空间增大独立腔体 的体积从而提高吸声材料的填充量， 而且凸起部的侧面还可以增加透气性， 提 高声学性能。
对附图的简要说明
附图说明
[0014] 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：
[0015] 图 1为本实用新型提供的扬声器箱的立体结构示意图；
[0016] 图 2为图 1所示扬声器箱的立体结构分解图；
[0017] 图 3为图 1所示扬声器箱另一视角的立体结构分解图； [0018] 图 4为沿图 1中 A- A线的剖视图。
发明实施例
具体实施方式
[0019] 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。
[0020] 请同时参阅图 1至图 4， 本实用新型提供一种扬声器箱 100， 所述扬声器箱 100包 括上盖 1、 下盖 2、 发声单体 3、 透气隔离件 4、 钢片 5和封合件 6。
[0021] 所述上盖 1盖设于所述下盖 2并与所述下盖 2配合形成收容空间 10, 所述发声单 体 3收容于所述收容空间 10内并将所述收容空间 10分隔成前腔 101和后腔 102, 具 体地， 所述发声单体 3与所述上盖 1围成所述前腔 101， 所述发声单体 3、 所述下 盖 2及所述上盖 1共同围成所述后腔 102。 在本实施方式中， 所述上盖 1正对所述 发声单体 3的位置设置钢片 5 , 所述钢片 5盖设于所述上盖 1， 所述发声单体 3与所 述钢片 5间隔设置形成所述前腔 101， 钢片的结构强度大可以做的很薄增大前腔 的体积， 所述钢片 5可以与所述上盖 1一体注塑成型并形成密封， 还可以通过粘 贴固定于所述上盖 1顶端形成密封， 当然上盖 1也可以不设置钢片 5的结构。 所述 上盖 1还开设有出声孔 14, 所述前腔 101与所述出声孔 14连通， 用于发声。
[0022] 所述上盖 1包括顶壁 11及自所述顶壁 11向靠近所述下盖 2方向延伸形成的挡墙 12 ， 所述挡墙 12配合所述顶壁 11围成具开口的独立腔体 30, 所述开口朝向所述下 盖 2—侧， 所述独立腔体 30填充有吸音材料， 可以有效改善扬声器箱 100的低频 声学性能。 优选的， 所述顶壁 11与所述挡墙 12为一体注塑成型结构。
[0023] 所述透气隔离件 4位于所述后腔 102, 其盖设固定于所述挡墙 12的靠近所述下盖 2的一侧封合所述开口并配合所述顶壁 11及所述挡墙 12在所述后腔 102内隔离出 一部分形成所述独立腔体 30。 所述透气隔离件 4设有向远离所述独立腔体 30方向 凸出延伸的凸起部 41， 即所述凸起部 41向靠近所述下盖 2方向凸出设置， 所述凸 起部 41充分利用后腔的空间增大独立腔体的体积从而提高吸声材料的填充量， 同时， 所述凸起部 41的侧面还可以增加透气性， 从而提高声学性能。
[0024] 所述透气隔离件 4与所述挡墙 12之间可以釆用注塑结合， 也可以釆用粘贴结合
[0025] 作为选择， 所述透气隔离件 4为无纺布隔离件， 所述凸起部 41通过热塑工艺形 成。 或者， 所述透气隔离件 4为金属隔离件， 所述凸起部 41通过冲压工艺形成。 当然， 所述透气隔离件 4还可以为其他材料制成， 本实用新型对此不做限制。
[0026] 所述上盖 1还包括贯穿所述顶壁 11设置的填充孔 13 , 所述封合件 6盖设于所述填 充孔 13。 在本实施方式中， 所述吸音材料通过所述填充孔 13填充到所述独立腔 体 30内， 再将所述填充孔 13用所述封合件 6封闭， 完成灌装操作。 优选地， 所述 封合件 6为 PET隔离件。
[0027] 需要说明的是， 本实施方式中， 将所述扬声器箱 100水平方向放置， 所述发声 单体 3的发声侧朝上， 此时定义所述上盖 1的上侧为顶端， 其他部件的方位与所 述上盖 1一致。
[0028] 与相关技术相比， 本实用新型提供的扬声器箱的透气隔离件设有向远离所述独 立腔体方向凸出延伸的凸起部， 所述凸起部充分利用后腔的空间增大独立腔体 的体积从而提高吸声材料的填充量， 而且凸起部的侧面还可以增加透气性， 提 高声学性能。
[0029] 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

权利要求书
[权利要求 1] 一种扬声器箱， 包括具有收容空间的壳体和收容于所述壳体内的发声 单体， 所述发声单体将所述收容空间分隔成前腔和后腔， 所述壳体设 有出声孔， 所述前腔与所述出声孔连通， 所述壳体对应所述后腔位置 设有挡墙， 所述后腔内对应所述挡墙设置透气隔离件， 所述挡墙与所 述透气隔离件配合在所述后腔内隔离出一部分形成独立腔体， 所述独 立腔体内填充吸音材料， 其特征在于， 所述透气隔离件设有向远离所 述独立腔体方向凸出延伸的凸起部。
[权利要求 2] 根据权利要求 1所述的扬声器箱， 其特征在于， 所述透气隔离件为无 纺布隔离件， 所述凸起部通过热塑工艺形成。
[权利要求 3] 根据权利要求 1所述的扬声器箱， 其特征在于， 所述透气隔离件为金 属隔离件， 所述凸起部通过冲压工艺形成。
[权利要求 4] 根据权利要求 1所述的扬声器箱， 其特征在于， 所述壳体对应所述独 立腔体的位置设置填充孔， 所述吸音材料通过所述填充孔注入到所述 独立腔体， 所述填充孔处设有封合件将所述吸音材料封装于所述独立 腔体内。
[权利要求 5] 根据权利要求 4所述的扬声器箱， 其特征在于， 所述封合件为 PET隔 离件。
[权利要求 6] 根据权利要求 1所述的扬声器箱， 其特征在于， 所述壳体包括下盖和 与所述下盖组配围成所述收容空间的上盖， 所述挡墙由所述上盖向所 述下盖方向延伸形成， 所述发声单体与所述上盖围成所述前腔， 所述 发声单体、 所述下盖及所述上盖共同围成所述后腔， 所述透气隔离件 盖设固定于所述挡墙的靠近所述下盖的一侧并与所述挡墙及所述上盖 共同围成所述独立腔体。
[权利要求 7] 根据权利要求 6所述的扬声器箱， 其特征在于， 所述挡墙与所述上盖 一体注塑成型。
PCT/CN2019/113320 2018-12-25 2019-10-25 扬声器箱 Ceased WO2020134460A1 (zh)

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