WO2020103588A1 - 扬声器箱 - Google Patents

扬声器箱

Info

Publication number
WO2020103588A1
WO2020103588A1 PCT/CN2019/110195 CN2019110195W WO2020103588A1 WO 2020103588 A1 WO2020103588 A1 WO 2020103588A1 CN 2019110195 W CN2019110195 W CN 2019110195W WO 2020103588 A1 WO2020103588 A1 WO 2020103588A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
cavity
upper cover
guide channel
sound guide
Prior art date
Application number
PCT/CN2019/110195
Other languages
English (en)
French (fr)
Inventor
郑亚健
冯炉
Original Assignee
瑞声声学科技(深圳)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.)
Filing date
Publication date
Application filed by 瑞声声学科技(深圳)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2020103588A1 publication Critical patent/WO2020103588A1/zh

Links

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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
    • 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
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • 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
    • H04R7/12—Non-planar diaphragms or cones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Definitions

  • the utility model relates to the field of sound and electricity, in particular to a speaker box used in portable electronic products.
  • the speaker box of the related art includes a housing having a housing space, a sound-generating monomer housed in the housing, and a sound-guiding channel formed in the housing space, the sound-generating monomer including a vibration for vibrating sound
  • the diaphragm divides the receiving space into a front acoustic cavity and a rear cavity, and the sound guide channel connects the front acoustic cavity with the outside world and forms the front cavity together with the front acoustic cavity.
  • the sound guide channel is designed as one, and a sound output structure is formed from the side of the sound emitting unit.
  • a sound output structure is formed from the side of the sound emitting unit.
  • the purpose of the utility model is to provide a speaker box with high reliability and excellent acoustic performance.
  • the present invention provides a speaker box, which includes a housing with a receiving space, a sound-generating monomer contained in the receiving space, and a sound guide channel formed in the receiving space;
  • the sound-generating monomer includes a diaphragm for vibrating and sounding, the diaphragm separates the receiving space into a front sound cavity and a rear cavity, and the sound guide channel connects the front sound cavity with the outside world and forms together with the front sound cavity Front cavity;
  • the sound guide channel includes a first sound guide channel communicating the front sound cavity with the outside world and a second sound guide channel communicating with the front sound cavity and the first sound guide channel, the second guide There are two sound channels located on opposite sides of the first sound guide channel.
  • the housing includes an upper cover, a lower cover provided on the upper cover and collectively surrounding the receiving space;
  • the upper cover includes a ring-shaped side wall and a bottom plate connected to the side wall And an upper cover plate covering the side of the bottom plate away from the lower cover;
  • the bottom plate is provided with a receiving hole penetrating therethrough and formed by a depression on the side of the bottom plate close to the upper cover plate
  • a first receiving slot and two second receiving slots the first receiving slot communicates with the receiving hole and is located on one side of the receiving hole, and both of the second receiving slots communicate with the receiving hole And are respectively located on the other opposite sides of the receiving hole;
  • the sound-generating monomer is clipped and fixed in the receiving hole and the diaphragm is spaced from the upper cover plate to form the front acoustic cavity, and the upper cover
  • the board and the first receiving groove together form the first sound guide channel, and the upper cover plate and the second receiving groove together form the two second sound guide channels;
  • the speaker box further includes a sound output hole penetratingly disposed on the side wall, and the first sound guide channel communicates with the sound output hole.
  • the upper cover plate includes a main body part close to the sound output hole and two extending parts formed by opposite sides of the main body part extending in a direction away from the main body part, the main body part and all
  • the diaphragms are opposed and spaced apart to form the front acoustic cavity, the main body portion and the first receiving groove together form the first sound guide channel, and the two extension portions are respectively connected to the two second receiving grooves Together form two second sound-guiding channels.
  • the speaker box has a rectangular shape
  • the side wall includes two long side walls opposite to each other and parallel to the long axis and two short side walls opposite to each other and parallel to the short axis, and the sound output hole is located at One of the long side walls.
  • the sound guide channel includes a first sound guide channel that connects the front sound cavity to the outside world, and respectively connects the front sound cavity to the first sound guide channel
  • Two second sound guide channels the first sound guide channel is used as the main sound output channel
  • the two second sound guide channels are used as auxiliary sound output channels
  • the first sound guide channel (main sound output channel) Cooperating with the two second sound-guiding channels (auxiliary sound-emitting channels), a side sound-emitting structure combining the main sound-emitting channels and the auxiliary sound-emitting channels is formed.
  • the two second sound guide channels are symmetrically arranged on opposite sides of the first sound guide channel so that the airflow in the front cavity is well balanced and the airflow in the front cavity is more balanced,
  • the vibration amplitude of the diaphragm during vibration is effectively suppressed, thereby making the reliability of the speaker box high;
  • the arrangement of the two second sound guide channels increases the effective conduction space volume of the sound guide channels Therefore, the sound flow of the front acoustic cavity is smoother, the acoustic compliance of the front cavity is improved, and the acoustic performance of the speaker box is excellent.
  • 1 is a schematic diagram of the stereo structure of the speaker box of the present invention.
  • FIG. 2 is an exploded view of a partial stereo structure of the speaker box of the present invention
  • Figure 3 is a perspective sectional view of the speaker box of the present invention.
  • FIG. 4 is a cross-sectional view taken along line A-A in FIG. 1;
  • FIG. 5 is a cross-sectional view taken along line B-B in FIG. 1.
  • the present invention provides a speaker box 100 including a housing 1 and a sounding unit 2.
  • the housing 1 has a receiving space 10.
  • the casing 1 may be an integrated structure or a separate structure.
  • the housing 1 is a split structure.
  • the housing 1 includes an upper cover 11 and a lower cover 12 that is disposed on the upper cover 11 and collectively surrounds the storage space 10.
  • the upper cover 11 includes an annular side wall 111, a bottom plate 112 connected to the side wall 111, and an upper cover plate 113 covering the side of the bottom plate 112 away from the lower cover 12.
  • the speaker box 100 has a rectangular shape
  • the side wall 111 includes two long side walls 1111 opposite to each other and parallel to the long axis, and two short side walls 1112 opposite to each other and parallel to the short axis.
  • its shape is not limited to this.
  • the sound-generating monomer 2 is accommodated in the accommodating space 10 of the housing 1, and the sound-generating monomer 2 divides the accommodating space 10 into a front acoustic cavity 1011 and a rear cavity 102, and the accommodating space 10 A sound guide channel 114 connecting the front acoustic cavity 1011 with the outside world is formed.
  • the sound-generating monomer 2 includes a diaphragm 21 for vibrating and sound-generating, and the diaphragm 21 divides the accommodating space 10 into the front acoustic cavity 1011 and the rear cavity 102.
  • the lower cover 12 is fixed on the side wall 111 and spaced apart from the bottom plate 112.
  • the monomers 2 together form the rear cavity 102, and the rear cavity 102 is used to improve the low-frequency acoustic performance of the speaker box 100.
  • the bottom plate 112 is provided with a receiving hole 1121 penetrating therethrough, the sounding monomer 2 is fixedly fixed to the receiving hole 1121 and the diaphragm 21 is spaced from the upper cover plate 113 to form the A front acoustic cavity 1011, the sound guide channel 114 communicates the front acoustic cavity 1011 with the outside world and forms a front cavity 101 with the front acoustic cavity 1011, and the front cavity 101 is used to form a side sound emitting structure.
  • the sound guide channel 114 includes a first sound guide channel 1141 that communicates the front sound cavity 1011 with the outside world, and a second sound guide channel 1142 that communicates with the front sound cavity 1011 and the first sound guide channel 1141. There are two second sound guide channels 1142 located on opposite sides of the first sound guide channel 1141 respectively.
  • a first receiving groove 1122 and two second receiving grooves 1123 are recessed on the side of the bottom plate 112 close to the upper cover plate 113, the first receiving groove 1122 and the receiving hole 1121 communicates and is located on one side of the receiving hole 1121, and the two second receiving slots 1123 communicate with the receiving hole 1121 and are located on opposite sides of the receiving hole 1121; the upper cover 113 and the first accommodating groove 1122 together enclose the first sound guide channel 1141, and the upper cover 113 and the second accommodating groove 1123 together enclose the two second sound guide channels 1142.
  • the side wall 111 is provided with a sound output hole 1113, specifically, the sound output hole 1113 is provided on one of the long side walls 1111, and the first sound guide channel 1141 passes through the sound output
  • the hole 1113 is in air communication with the outside world.
  • the upper cover plate 113 includes a main body portion 1131 close to the sound output hole 1113 and two extending portions 1132 formed by opposite sides of the main body portion 1131 extending in a direction away from the main body portion 1131
  • the main body portion 1131 is opposed to the diaphragm 21 and forms the front acoustic cavity 1011 at intervals.
  • the main body portion 1131 and the first accommodating groove 1122 together form the first sound guide channel 1141, two The extension portion 1132 and the two second receiving grooves 1123 respectively form two second sound guide channels 1142.
  • the first sound guide channel 1141 directly communicates with the outside world as a main sound output channel, and the two second sound guide channels 1142 respectively connect the front sound cavity 1011 and the first sound guide channel 1141 as an auxiliary sound output channel .
  • Part of the sound in the front acoustic cavity 1011 is directly emitted to the outside through the first sound guide channel 1141 (main sound output channel); the other part of the sound is first transmitted to the two second sound guide channels 1142 (auxiliary sound output channel) ), Then from the two second sound guide channels 1142 (auxiliary output channel) to the first sound guide channel 1141 (main output channel) to the outside world, thus achieving the main output channel and auxiliary Side sound structure combined with sound channel.
  • the two second sound-guiding channels 1142 are symmetrically disposed on opposite sides of the first sound-guiding channel 1141, so that the airflow in the front cavity 101 is well balanced, effectively suppressing the diaphragm 21
  • the swing amplitude during vibration makes the speaker box 100 highly reliable; in addition, the provision of two second sound guide channels 1142 increases the effective conductive space volume of the sound guide channels 114, thereby The sound flow of the front acoustic cavity 1011 is smoother, the acoustic compliance of the front cavity 101 is improved, and the acoustic performance of the speaker box 100 is excellent.
  • the sound guide channel includes a first sound guide channel that connects the front sound cavity to the outside world, and respectively connects the front sound cavity to the first sound guide channel
  • Two second sound guide channels the first sound guide channel is used as the main sound output channel
  • the two second sound guide channels are used as auxiliary sound output channels
  • the first sound guide channel (main sound output channel) Cooperating with the two second sound-guiding channels (auxiliary sound-emitting channels), a side sound-emitting structure combining the main sound-emitting channels and the auxiliary sound-emitting channels is formed.
  • the two second sound guide channels are symmetrically arranged on opposite sides of the first sound guide channel so that the airflow in the front cavity is well balanced and the airflow in the front cavity is more balanced,
  • the vibration amplitude of the diaphragm during vibration is effectively suppressed, thereby making the reliability of the speaker box high;
  • the arrangement of the two second sound guide channels increases the effective conduction space volume of the sound guide channels Therefore, the sound flow of the front acoustic cavity is smoother, the acoustic compliance of the front cavity is improved, and the acoustic performance of the speaker box is excellent.

Abstract

本实用新型提供了一种扬声器箱，其包括具有收容空间的壳体、收容于收容空间内的发声单体以及形成于收容空间内的导声通道；发声单体包括用于振动发声的振膜，振膜将收容空间分隔成前声腔和后腔，导声通道将前声腔与外界连通且与前声腔共同形成前腔，导声通道包括将前声腔与外界连通的第一导声通道以及与前声腔和第一导声通道连通的第二导声通道，第二导声通道为两个且分别位于第一导声通道的相对两侧。与相关技术相比，本实用新型的扬声器箱可靠性高、声学性能优。

Description

扬声器箱 技术领域
本实用新型涉及声电领域，尤其涉及一种运用于便携式电子产品的扬声器箱。
 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具有收容空间的壳体、收容于所述壳体内的发声单体以及形成于所述收容空间内的导声通道，所述发声单体包括用于振动发声的振膜，所述振膜将所述收容空间分隔成前声腔和后腔，所述导声通道将所述前声腔与外界连通并与所述前声腔共同构成所述前腔。
 技术问题
然而，相关技术的所述扬声器箱中，所述导声通道设计为一个，并从所述发声单体一侧形成出音结构。该结构因所述前声腔的气流均需要由所述发声单体的同一侧进入所述导声通道，容易造成所述前腔内的气流不平衡，从而使得所述振膜在振动过程中产生摇摆幅度过大的现象，影响了所述扬声器箱的可靠性和声学性能。
因此，实有必要提供一种新的扬声器箱解决上述技术问题。
 技术解决方案
本实用新型的目的在于提供一种可靠性高且声学性能优的扬声器箱。
为了达到上述目的，本实用新型提供了一种扬声器箱，其包括具有收容空间的壳体、收容于所述收容空间内的发声单体以及形成于所述收容空间内的导声通道；所述发声单体包括用于振动发声的振膜，所述振膜将所述收容空间分隔成前声腔和后腔，所述导声通道将所述前声腔与外界连通且与所述前声腔共同形成前腔；所述导声通道包括将所述前声腔与外界连通的第一导声通道以及与所述前声腔与所述第一导声通道连通的第二导声通道，所述第二导声通道为两个且分别位于所述第一导声通道的相对两侧。
优选的，所述壳体包括上盖、盖设于所述上盖并共同围成所述收容空间的下盖；所述上盖包括呈环状的侧壁、连接于所述侧壁的底板以及盖设于所述底板且远离所述下盖的一侧的上盖板；所述底板设有贯穿其上的收容孔以及由所述底板的靠近所述上盖板的一侧凹陷形成的第一收容槽和两个第二收容槽，所述第一收容槽与所述收容孔连通且位于所述收容孔的其中一侧，两个所述第二收容槽均与所述收容孔连通且分别位于所述收容孔的另外相对两侧；所述发声单体卡设固定于所述收容孔内并使所述振膜与所述上盖板间隔形成所述前声腔，所述上盖板与所述第一收容槽共同围成所述第一导声通道，所述上盖板与所述第二收容槽共同围成两个所述第二导声通道；所述下盖、所述侧壁、所述底板及所述发声单体共同围成所述后腔。
优选的，所述扬声器箱还包括贯穿设置于所述侧壁的出音孔，所述第一导声通道与所述出音孔连通。
优选的，所述上盖板包括靠近所述出音孔的主体部及由所述主体部的相对两侧沿远离所述主体部的方向延伸形成的两个延伸部，所述主体部与所述振膜相对且间隔形成所述前声腔，所述主体部与所述第一收容槽共同围成所述第一导声通道，两个所述延伸部分别与两个所述第二收容槽共同围成两个第二导声通道。
优选的，所述扬声器箱呈矩形，所述侧壁包括两个相对设置且平行于长轴的长侧壁和两个相对设置且平行于短轴的短侧壁，所述出音孔设置于其中一个所述长侧壁。
 有益效果
与相关技术相比，本实用新型的扬声器箱中，所述导声通道包括将所述前声腔与外界连通的第一导声通道以及分别将所述前声腔与所述第一导声通道连通的两个第二导声通道，所述第一导声通道作为主出音通道，两个所述第二导声通道作为辅助出音通道，所述第一导声通道（主出音通道）与两个所述第二导声通道（辅助出音通道）的配合设置，形成了主出音通道与辅助出音通道相结合的侧发声结构。上述结构中，两个所述第二导声通道对称设置于所述第一导声通道的相对两侧使得所述前腔内的气流平衡性好，使得所述前腔内的气流更加平衡，有效抑制了振膜在振动过程中的摇摆幅度，从而使得所述扬声器箱的可靠性高；另外，两个所述第二导声通道的设置，增加了所述导声通道的有效传导空间体积，从而使得所述前声腔的出声气流更加顺畅，提高了所述前腔的声顺性，进而使得所述扬声器箱的声学性能优。
 附图说明
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：
图1为本实用新型扬声器箱的立体结构示意图；
图2为本实用新型扬声器箱的部分立体结构分解图；
图3为本实用新型扬声器箱的立体剖面图；
图4为沿图1中A-A线剖视图；
图5为沿图1中B-B线剖视图。
 本发明的实施方式
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。
请同时参阅图1-2，本实用新型提供了一种扬声器箱100，包括壳体1和发声单体2。
请同时参阅图2-5，所述壳体1具有收容空间10。所述壳体1可为一体结构，也可以为分体结构。本实施方式中，所述壳体1为分体结构，具体的，所述壳体1包括上盖11、盖设于所述上盖11并共同围成所述收容空间10的下盖12。所述上盖11包括呈环状的侧壁111、连接于所述侧壁111的底板112以及盖设于所述底板112且远离所述下盖12的一侧的上盖板113。
优选的，所述扬声器箱100呈矩形，所述侧壁111包括两个相对设置且平行于长轴的长侧壁1111和两个相对设置且平行于短轴的短侧壁1112。当然，其形状并不限于此。
所述发声单体2收容于所述壳体1的所述收容空间10内，并且所述发声单体2将所述收容空间10分隔成前声腔1011和后腔102，所述收容空间10内形成有将所述前声腔1011与外界连接的导声通道114。
具体的，所述发声单体2包括用于振动发声的振膜21，所述振膜21将所述收容空间10分隔为所述前声腔1011和所述后腔102。
在本实施方式中，所述下盖12盖设固定于所述侧壁111上且与所述底板112间隔设置，所述下盖12、所述侧壁111、所述底板112及所述发声单体2共同围成所述后腔102，所述后腔102用于改善所述扬声器箱100的低频声学性能。
进一步的，所述底板112设有贯穿其上的收容孔1121，所述发声单体2卡设固定于所述收容孔1121并使所述振膜21与所述上盖板113间隔形成所述前声腔1011，所述导声通道114将所述前声腔1011与外界连通且与所述前声腔1011共同形成前腔101，所述前腔101用于形成侧面发声结构。
所述导声通道114包括将所述前声腔1011与外界连通的第一导声通道1141以及与所述前声腔1011和所述第一导声通道1141连通的第二导声通道1142，且所述第二导声通道1142为两个且分别位于所述第一导声通道1141的相对两侧。
在本实施方式中，所述底板112的靠近所述上盖板113的一侧凹陷形成有第一收容槽1122和两个第二收容槽1123，所述第一收容槽1122与所述收容孔1121连通且位于所述收容孔1121的其中一侧，两个所述第二收容槽1123均与所述收容孔1121连通且分别位于所述收容孔1121的另外相对两侧；所述上盖板113与所述第一收容槽1122共同围成所述第一导声通道1141，所述上盖板113与所述第二收容槽1123共同围成两个所述第二导声通道1142。
优选的，所述侧壁111贯穿设置有出音孔1113，具体的，所述出音孔1113设置于其中一个所述长侧壁1111上，所述第一导声通道1141通过所述出音孔1113与外界实现空气连通。
更优的，所述上盖板113包括靠近所述出音孔1113的主体部1131及由所述主体部1131的相对两侧沿远离所述主体部1131的方向延伸形成的两个延伸部1132，所述主体部1131与所述振膜21相对且间隔形成所述前声腔1011，所述主体部1131与所述第一收容槽1122共同围成所述第一导声通道1141，两个所述延伸部1132分别与两个所述第二收容槽1123共同围成两个第二导声通道1142。
所述第一导声通道1141与外界直接连通作为主出音通道，两个所述第二导声通道1142分别将所述前声腔1011与所述第一导声通道1141连通作为辅助出音通道。所述前声腔1011内的一部分声音直接通过所述第一导声通道1141（主出音通道）向外界发出；另外一部分声音先传递到两个所述第二导声通道1142（辅助出音通道）内，再从两个所述第二导声通道1142（辅助出音通道）传递到所述第一导声通道1141（主出音通道）向外界发出，从而实现了主出音通道与辅助出音通道相结合的侧发声结构。
上述结构中，两个所述第二导声通道1142对称设置于所述第一导声通道1141的相对两侧使得所述前腔101内的气流平衡性好，有效抑制了所述振膜21在振动过程中的摇摆幅度，从而使得所述扬声器箱100的可靠性高；另外，两个所述第二导声通道1142的设置，增加了所述导声通道114的有效传导空间体积，从而使得所述前声腔1011的出声气流更加顺畅，提高了所述前腔101的声顺性，进而使得所述扬声器箱100的声学性能优。
与相关技术相比，本实用新型的扬声器箱中，所述导声通道包括将所述前声腔与外界连通的第一导声通道以及分别将所述前声腔与所述第一导声通道连通的两个第二导声通道，所述第一导声通道作为主出音通道，两个所述第二导声通道作为辅助出音通道，所述第一导声通道（主出音通道）与两个所述第二导声通道（辅助出音通道）的配合设置，形成了主出音通道与辅助出音通道相结合的侧发声结构。上述结构中，两个所述第二导声通道对称设置于所述第一导声通道的相对两侧使得所述前腔内的气流平衡性好，使得所述前腔内的气流更加平衡，有效抑制了振膜在振动过程中的摇摆幅度，从而使得所述扬声器箱的可靠性高；另外，两个所述第二导声通道的设置，增加了所述导声通道的有效传导空间体积，从而使得所述前声腔的出声气流更加顺畅，提高了所述前腔的声顺性，进而使得所述扬声器箱的声学性能优。
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 (5)

  1. 一种扬声器箱，其包括具有收容空间的壳体、收容于所述收容空间内的发声单体以及形成于所述收容空间内的导声通道；所述发声单体包括用于振动发声的振膜，所述振膜将所述收容空间分隔成前声腔和后腔，所述导声通道将所述前声腔与外界连通且与所述前声腔共同形成前腔，其特征在于，所述导声通道包括将所述前声腔与外界连通的第一导声通道以及与所述前声腔和所述第一导声通道连通的第二导声通道，所述第二导声通道为两个且分别位于所述第一导声通道的相对两侧。
  2. 根据权利要求1所述的扬声器箱，其特征在于，所述壳体包括上盖、盖设于所述上盖并共同围成所述收容空间的下盖；所述上盖包括呈环状的侧壁、连接于所述侧壁的底板以及盖设于所述底板且远离所述下盖的一侧的上盖板；所述底板设有贯穿其上的收容孔以及由所述底板的靠近所述上盖板的一侧凹陷形成的第一收容槽和两个第二收容槽，所述第一收容槽与所述收容孔连通且位于所述收容孔的其中一侧，两个所述第二收容槽均与所述收容孔连通且分别位于所述收容孔的另外相对两侧；所述发声单体卡设固定于所述收容孔内并使所述振膜与所述上盖板间隔形成所述前声腔，所述上盖板与所述第一收容槽共同围成所述第一导声通道，所述上盖板与所述第二收容槽共同围成两个所述第二导声通道；所述下盖、所述侧壁、所述底板及所述发声单体共同围成所述后腔。
  3. 根据权利要求2所述的扬声器箱，其特征在于，所述扬声器箱还包括贯穿设置于所述侧壁的出音孔，所述第一导声通道与所述出音孔连通。
  4. 根据权利要求3所述的扬声器箱，其特征在于，所述上盖板包括靠近所述出音孔的主体部及由所述主体部的相对两侧沿远离所述主体部的方向延伸形成的两个延伸部，所述主体部与所述振膜相对且间隔形成所述前声腔，所述主体部与所述第一收容槽共同围成所述第一导声通道，两个所述延伸部分别与两个所述第二收容槽共同围成两个第二导声通道。
  5. 根据权利要求4所述的扬声器箱，其特征在于，所述扬声器箱呈矩形，所述侧壁包括两个相对设置且平行于长轴的长侧壁和两个相对设置且平行于短轴的短侧壁，所述出音孔设置于其中一个所述长侧壁。
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