WO2021109200A1 - 扬声器箱 - Google Patents

扬声器箱 Download PDF

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Publication number
WO2021109200A1
WO2021109200A1 PCT/CN2019/124930 CN2019124930W WO2021109200A1 WO 2021109200 A1 WO2021109200 A1 WO 2021109200A1 CN 2019124930 W CN2019124930 W CN 2019124930W WO 2021109200 A1 WO2021109200 A1 WO 2021109200A1
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WO
WIPO (PCT)
Prior art keywords
cavity
wall
sound
housing
speaker box
Prior art date
Application number
PCT/CN2019/124930
Other languages
English (en)
French (fr)
Inventor
李健
吴军
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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Publication date
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 WO2021109200A1 publication Critical patent/WO2021109200A1/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
    • H04R1/021—Casings; Cabinets ; Supports therefor; Mountings therein incorporating only one transducer
    • 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
    • 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
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements

Definitions

  • the invention 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 with a storage space, a sound emitting unit accommodated in the storage space, a supporting wall and a surrounding wall formed by extending from the inner side of the casing, and a cover plate covering the surrounding wall;
  • the body is fixedly supported on the supporting wall.
  • the sound-emitting unit includes a diaphragm for vibrating and sounding.
  • the diaphragm and the housing form a front sound cavity.
  • the housing is provided with a sound guide channel that connects the front sound cavity to the outside and connects the front sound cavity.
  • the acoustic cavities jointly form the front cavity; the surrounding wall, the cover plate and the supporting wall jointly enclose an auxiliary acoustic cavity, the supporting wall is provided with a through hole passing through it, and the auxiliary acoustic cavity is communicated with the front cavity through the through hole to form a resonant cavity structure of the front cavity.
  • the cavity structure is used to adjust the high-frequency acoustic performance of the speaker box.
  • the resonant cavity structure of the speaker box is a single-cavity structure, which has limited adjustment effect on the high-frequency acoustic performance of the speaker box, which limits the high-frequency acoustic performance and causes the high-frequency sound emitted by the speaker box to be harsher. , Poor hearing.
  • the purpose of the present invention is to provide a loudspeaker box with excellent high-frequency acoustic performance and a good sense of hearing.
  • the present invention provides a speaker box, which includes a housing having a housing space and a sounding unit accommodated in the housing space, and the inner side of the housing is extended to support the sounding unit
  • the housing is divided into a front sound cavity and a rear cavity.
  • the sound guide channel communicates the front sound cavity with the outside and forms a front cavity together with the front sound cavity;
  • the speaker box also includes a first cover plate, and the housing A surrounding wall formed on the inner side and located on the outer side of the supporting wall, the inner side of the surrounding wall protrudingly extends to form a partition plate connected to the supporting wall, the first cover plate is disposed on the surrounding wall, and the surrounding wall ,
  • the first cover plate, the housing and the supporting wall jointly enclose an auxiliary sound cavity;
  • the supporting wall is provided with a first through hole penetrating therethrough, and the partition plate is fixedly housed in the auxiliary sound cavity And divide the auxiliary acoustic cavity into a first cavity and a second cavity, the partition plate is provided with a second through hole penetrating therethrough, and the first cavity passes through the first through hole and the front cavity Connected; the second cavity communicates with the first cavity through the second through hole.
  • the first cavity communicates with the front acoustic cavity through the first through hole.
  • the speaker box further includes a breathable damping member attached to the partition plate and completely covering the second through hole, and the second cavity is communicated with the first cavity through the breathable damping member.
  • the surrounding wall includes a first wall and two second walls, the first wall and the supporting wall are spaced apart, and the two second walls are respectively approached from opposite sides of the first wall
  • the supporting wall extends in the direction, and the two second walls are respectively connected to the supporting wall; the partition plate extends from the first wall in the direction close to the supporting wall and is connected to the supporting wall. Wall connection.
  • the speaker box further includes a second cover plate, a side of the housing away from the surrounding wall is recessed to form a receiving groove communicating with the first cavity, and the second cover plate is disposed on the receiving groove.
  • the groove is arranged opposite to the partition plate; the supporting wall, the surrounding wall, the partition plate and the second cover plate jointly enclose the first cavity, the supporting wall, the The surrounding wall, the partition plate and the first cover plate jointly enclose the second cavity.
  • the housing includes an upper cover and a lower cover covering the upper cover and jointly enclosing the accommodating space, the supporting wall and the enclosing wall are both formed on the upper cover, and the accommodating The groove is formed by a depression of the upper cover on a side away from the surrounding wall, and the sound-producing monomer is fixedly supported on the supporting wall and spaced from the upper cover to form the front acoustic cavity.
  • the sound-producing monomer is fixed to the supporting wall by glue bonding, the connection between the first cover and the surrounding wall is glued and sealed, and the connection between the second cover and the upper cover is Glue and seal at the place.
  • the first cover plate and the second cover plate are both made of PET material.
  • the first cover, the housing, and the supporting wall jointly enclose the auxiliary sound cavity
  • the partition plate is fixedly housed in the auxiliary sound cavity and divides the auxiliary sound cavity into the first cavity and the second cavity.
  • the supporting wall is provided with a first through hole through it
  • the partition plate is provided with a second through hole through it
  • the first cavity is communicated with the front cavity through the first through hole
  • the second cavity is through the second through hole Connected with the first cavity
  • the speaker box forms a resonant cavity structure with a double cavity structure, and the high frequency resonance peak of the speaker box is effectively reduced through the resonant cavity structure
  • the Q value (quality factor value) and sensitivity make the high-frequency acoustic performance of the speaker box better, thereby improving the user's listening experience of high-frequency sound.
  • Figure 1 is a schematic diagram of the three-dimensional structure of the speaker box of the present invention.
  • Figure 2 is an exploded view of a part of the three-dimensional structure of the speaker box of the present invention.
  • Figure 3 is an exploded view of a partial three-dimensional structure of the speaker box of the present invention from another angle;
  • Figure 4 is a sectional view taken along line A-A in Figure 1;
  • Fig. 5 is an enlarged view of the part shown in C in Fig. 4;
  • Figure 6 is a sectional view taken along line B-B in Figure 1;
  • Fig. 7 is an enlarged view of the part shown in D in Fig. 6;
  • Figure 8 is a frequency response curve diagram of a related art speaker box
  • Figure 9 is a graph of the frequency response of the speaker box of the present invention.
  • the present invention provides a speaker box 100, which includes a housing 1, a sounding unit 2, a first cover plate 3, a second cover plate 4, and a partition plate 5.
  • the housing 1 has a accommodating space 10, the inside of the housing 1 extends to form a supporting wall 111 and a surrounding wall 112 for supporting the sound emitting unit 2, and the surrounding wall 112 is located outside the supporting wall 111 And it abuts against the outer side wall of the supporting wall 111.
  • the housing 1 may be an integral structure or a separate structure.
  • the housing 1 includes an upper cover 11 and is arranged in parallel with the upper cover 11
  • the lower cover 12 of the receiving space 10 is jointly enclosed.
  • the sounding monomer 2 is accommodated in the receiving space 10 of the housing 1, and the sounding monomer 2 divides the receiving space 10 into a front sound cavity 1101 and a rear cavity 102.
  • the sounding monomer 1 is fixedly supported on the supporting wall 111 and spaced from the upper cover 11 to form the front sound cavity 1101, and the sounding monomer 2 includes a diaphragm 21 for vibrating and sounding.
  • the diaphragm 21 divides the receiving space 10 into the front acoustic cavity 1101 and the rear cavity 102.
  • the diaphragm 21 and the upper cover 11 are spaced apart and jointly enclose the front acoustic cavity 1101; the diaphragm 21, the upper cover 11 and the lower cover 12 jointly enclose the rear cavity 102.
  • the rear cavity 102 is used to improve the low frequency acoustic performance of the speaker box 100.
  • the housing 1 is also formed with a sound guide channel 1102 which connects the front sound cavity 1101 with the outside and forms the front cavity 101 together with the front sound cavity 1101.
  • the sound guide channel 1102 is used to form the front cavity 101 into a side sound emitting structure.
  • the first cover plate 3 is completely covered on the surrounding wall 112, and the surrounding wall 112, the first cover plate 3, the housing 1, and the supporting wall 111 collectively enclose an auxiliary sound cavity 103
  • the supporting wall 111 is provided with a first through hole 1110 penetrating therethrough, and the auxiliary acoustic cavity 103 communicates with the front cavity 101 through the first through hole 1110 to form a resonant cavity structure of the front cavity 101, Used to improve high-frequency acoustic performance.
  • the inner side of the surrounding wall 112 protrudes and extends to form a partition plate 5 connected to the support wall 111, and the partition plate 5 is fixedly housed in the auxiliary sound cavity 103 and divides the auxiliary sound cavity 103 into a first cavity 1031 and a second cavity 1032.
  • the first cavity 1031 communicates with the front cavity 101 through the first through hole 1110; the partition plate 5 is provided with a second through hole 50 penetrating therethrough.
  • the second cavity 1032 communicates with the first cavity 1031 through the second through hole 50.
  • the partition plate 5 and the surrounding wall 112 may be integrated or separated.
  • the surrounding wall 112 includes a first wall 1121 and two second walls.
  • the wall 1122, the first wall 1121 and the supporting wall 111 are spaced apart, and the two second walls 1122 are respectively formed by extending opposite sides of the first wall 1121 in a direction approaching the supporting wall 111, and The two second walls 1122 are respectively connected to the supporting wall 111;
  • the partition plate 5 extends from the first wall 1121 in a direction approaching the supporting wall 111 and is connected to the supporting wall 111, even though
  • the scoring partition 5 and the surrounding wall 112 are an integral structure, and there is no need to separately assemble the partition plate 5, which simplifies the assembly process.
  • the partition plate can also be a separate plate structure.
  • the inner side of the surrounding wall is Hollow, when assembling, the partition plate needs to be fixed on the inner side of the surrounding wall to realize the division of the auxiliary sound cavity.
  • the housing 1 is recessed on a side away from the surrounding wall 112 to form a receiving groove 110 communicating with the first cavity 1031. More specifically, the receiving groove 110 is far away from the upper cover 11 by the upper cover 11 One side of the surrounding wall 112 is recessed, and the second cover plate 4 is disposed on the receiving groove 110 and is arranged opposite to the partition plate 5.
  • the first cavity 1031 is surrounded by the supporting wall 111, the surrounding wall 112, the partition plate 5, and the second cover plate 4, and the second cavity 1032 is surrounded by the supporting wall 111, The surrounding wall 112, the partition plate 5 and the first cover plate 3 are jointly enclosed.
  • the speaker box 100 forms a resonant cavity structure with a double cavity structure, which effectively increases the front cavity 101
  • the volume of the cavity improves the high-frequency acoustic performance.
  • the double-cavity structure of the resonant cavity structure more effectively reduces the Q value (quality factor value) and sensitivity of the high-frequency resonance peak of the speaker box 100, so that the speaker box 100 is The high-frequency acoustic performance is better, thereby improving the user's listening experience of high-frequency sounds.
  • first cavity 1031 communicates with the front acoustic cavity 1101 through the first through hole 1110.
  • first cavity it is also feasible for the first cavity to communicate with the sound guide channel through the first through hole, and the principle is the same.
  • the speaker box 100 further includes a breathable damping member 6 that is attached to the partition plate 5 and completely covers the second through hole 50, and the second cavity 1032 passes through the breathable damping member 6 and The communication of the first cavity 1031 effectively increases the damping between the first cavity 1031 and the second cavity 1032, and further improves the high-frequency acoustic performance.
  • the sound-producing monomer 2 is fixed to the supporting wall 111 by glue bonding, the connection between the first cover 3 and the surrounding wall 112 is glued and sealed, and the second cover 4 The connection with the upper cover 11 is glued and sealed, which improves the airtightness of the front acoustic cavity 1101, the first cavity 1031, and the second cavity 1032, so that the high-frequency acoustic performance is better.
  • the first cover plate 3 and the second cover plate 4 are made of soft PET material, which can effectively reduce the resonance peak and distortion of the resonant cavity, thereby making the high-frequency acoustic performance better.
  • the material of the cover plate is not limited to this, as long as the cover plate is made of other materials that can effectively reduce the resonance peak and distortion of the resonant cavity, the principle is the same.
  • the surrounding walls 112 there may be one or more of the surrounding walls 112 and there may be multiple locations where the surrounding walls 112 are arranged.
  • the surrounding wall 112 is provided with one. According to the needs of acoustic performance adjustment, multiple resonant cavities with double cavities can be formed by increasing the number of surrounding walls and the number of first cover plates, second cover plates, and partition plates corresponding to the surrounding walls. Increase the cavity volume of the front cavity or directly adjust the position of the surrounding wall to better improve the high-frequency acoustic performance.
  • the frequency response curve of the speaker box of the related art with a single cavity resonant cavity structure in FIG. 8.
  • the working frequency of the related art speaker box is at the level of 5500 ⁇ 6000Hz
  • the sound pressure level of the speaker box is greater than 100dB.
  • the sound pressure level of the loudspeaker box reaches its peak, which is greater than 100.5dB.
  • the working frequency is at the level of 5500 ⁇ 6000Hz
  • the sound pressure level of the speaker box is high, and its actual hearing high frequency is relatively harsh, especially the labial and tooth sound is very sharp, and the high frequency acoustic performance is poor.
  • FIG. 9 Please refer to FIG. 9 for the frequency response curve diagram of the speaker device with a double-cavity resonant cavity structure of the present invention.
  • the peak values of the frequency response curve of the speaker box of the present invention are all less than 100 dB.
  • the speaker box of the present invention effectively improves the high-frequency acoustic performance.
  • FIG. 6 frequency response curves of different embodiments of the speaker box of the present invention by adjusting the number and position of the resonant cavity.
  • the working frequency is at the level of 4000 ⁇ 6000Hz, compared with the frequency response curve of the related art speaker box shown in Fig. 4, the sound pressure level level corresponding to the frequency response curve of the speaker box of the three different embodiments of the speaker box of the present invention There is a decrease and there are peaks.
  • the frequency response curve of the loudspeaker box of one embodiment has the highest peak value, and when the working frequency is 5000 Hz, the sound pressure level corresponding to the peak value is less than 102 dB.
  • the speaker box of the present invention effectively improves the high-frequency acoustic performance.
  • the first cover, the housing, and the supporting wall jointly enclose the auxiliary sound cavity
  • the partition plate is fixedly housed in the auxiliary sound cavity and divides the auxiliary sound cavity into the first cavity and the second cavity.
  • the supporting wall is provided with a first through hole through it
  • the partition plate is provided with a second through hole through it
  • the first cavity is communicated with the front cavity through the first through hole
  • the second cavity is through the second through hole Connected with the first cavity
  • the speaker box forms a resonant cavity structure with a double cavity structure, and the high frequency resonance peak of the speaker box is effectively reduced through the resonant cavity structure
  • the Q value (quality factor value) and sensitivity make the high-frequency acoustic performance of the speaker box better, thereby improving the user's listening experience of high-frequency sound.

Abstract

本发明提供了一种扬声器箱，其包括壳体、发声单体和第一盖板，壳体的内侧延伸形成用于支撑发声单体的支撑壁且还形成有导声通道，发声单体固定于支撑壁，发声单体包括振膜，振膜将壳体分隔成前声腔和后腔，导声通道将前声腔与外界连通并与前声腔共同形成前腔；壳体的内侧延伸形成围壁，围壁内侧凸出延伸形成与支撑壁连接的分隔板，第一盖板盖设于围壁，围壁、第一盖板、壳体以及支撑壁共同围成辅助声腔；支撑壁设有第一通孔，分隔板收容于辅助声腔内并将辅助声腔分隔成第一腔和第二腔，分隔板设有第二通孔，第一腔通过第一通孔与前腔连通；第二腔通过第二通孔与第一腔连通。与相关技术相比，本发明的扬声器箱高频声学性能优且听感好。

Description

扬声器箱 技术领域
本发明涉及声电领域，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、收容于收容空间内的发声单体、由壳体的内侧延伸形成的支撑壁和围壁、盖设于围壁的盖板；发声单体固定支撑于在支撑壁，发声单体包括用于振动发声的振膜，振膜与壳体间隔形成前声腔，壳体设有导声通道，导声通道将前声腔与外界连通并与前声腔共同形成前腔；围壁、盖板与支撑壁共同围成辅助声腔，支撑壁设有贯穿其上的通孔，辅助声腔通过通孔与前腔连通以形成前腔的谐振腔结构，谐振腔结构用以调整扬声器箱的高频声学性能。
 技术问题
然而，相关技术中，扬声器箱的谐振腔结构为单腔体结构，对扬声器箱的高频声学性能的调节作用有限，从而使得高频声学性能受限，导致扬声器箱发出的高频声音较为刺耳，听感差。
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
本发明的目的在于提供一种高频声学性能优且听感好的扬声器箱。
为了达到上述目的，本发明提供一种扬声器箱，其包括具有收容空间的壳体和 收容于所述收容空间内的发声单体，所述壳体的内侧延伸形成用于支撑所述发声单体的支撑壁，且所述壳体内还形成有导声通道，所述发声单体固定支撑于所述支撑壁，所述发声单体包括用于振动发声的振膜，所述振膜将所述壳体分隔成 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形成前腔；所述扬声器箱还包括第一盖板，所述壳体的内侧延伸形成且位于支撑壁外侧的围壁，所述围壁内侧凸出延伸形成与所述支撑壁连接的分隔板，所述第一盖板盖设于所述围壁，所述围壁、所述第一盖板、所述壳体以及所述支撑壁共同围成辅助声腔；所述支撑壁设有贯穿其上的第一通孔，所述分隔板固定收容于所述辅助声腔内并将所述辅助声腔分隔成第一腔和第二腔，所述分隔板设有贯穿其上的第二通孔，所述第一腔通过所述第一通孔与所述前腔连通；所述第二腔通过所述第二通孔与所述第一腔连通。
优选的，所述第一腔通过所述第一通孔与所述前声腔连通。
优选的，所述扬声器箱还包括贴合于所述分隔板且完全覆盖所述第二通孔的透气阻尼件，所述第二腔通过所述透气阻尼件与所述第一腔连通。
优选的，所述围壁包括第一壁以及两个第二壁，所述第一壁与所述支撑壁间隔设置，两个所述第二壁分别由所述第一壁相对两侧向靠近所述支撑壁的方向延伸形成，且两个所述第二壁分别连接于所述支撑壁；所述分隔板由所述第一壁向靠近所述支撑壁的方向延伸并与所述支撑壁连接。
优选的，所述扬声器箱还包括第二盖板，所述壳体远离所述围壁一侧凹陷形成与所述第一腔连通的收容槽，所述第二盖板盖设于所述收容槽并与所述分隔板相对间隔设置；所述支撑壁、所述围壁、所述分隔板及所述第二盖板共同围成所述第一腔，所述支撑壁、所述围壁、所述分隔板与所述第一盖板共同围成所述第二腔。
优选的，所述壳体包括上盖及盖设于所述上盖并共同围成所述收容空间的下盖，所述支撑壁与所述围壁均形成于所述上盖，所述收容槽由所述上盖远离所述围壁一侧凹陷形成，所述发声单体固定支撑于所述支撑壁并与所述上盖间隔形成所述前声腔。
优选的，所述发声单体通过胶水粘结固定于所述支撑壁，所述第一盖板与所述围壁的连接处打胶密封，所述第二盖板与所述上盖的连接处打胶密封。
优选的，所述第一盖板和所述第二盖板均为PET材料制成。
 有益效果
与相关技术相比，本发明的扬声器箱中，第一盖板、壳体以及支撑壁共同围成辅助声腔，分隔板固定收容于辅助声腔内并将辅助声腔分隔成第一腔和第二腔；支撑壁设有贯穿其上的第一通孔，分隔板设有贯穿其上的第二通孔，第一腔通过第一通孔与前腔连通；第二腔通过第二通孔与第一腔连通；上述结构中，通过第一腔和第二腔的共同设置，使得扬声器箱形成具有双腔体结构的谐振腔结构，通过谐振腔结构有效地降低扬声器箱的高频共振峰的Q值（品质因素值）和灵敏度，使得扬声器箱的高频声学性能更优，从而提高用户对高频声音的听感体验。
 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为本发明扬声器箱的立体结构示意图；
图2为本发明扬声器箱的部分立体结构分解图；
图3为本发明扬声器箱另一角度的部分立体结构分解图；
图4为沿图1中A-A线剖视图；
图5为图4中C所示部分的放大图；
图6为沿图1中B-B线剖视图；
图7为图6中D所示部分的放大图；
图8为相关技术扬声器箱的频率响应曲线图；
图9为本发明扬声器箱的频率响应曲线图。
 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1-7所示，本发明提供了一种扬声器箱100，其包括壳体1、发声单体2、第一盖板3、第二盖板4以及分隔板5。
所述壳体1具有收容空间10，所述壳体1的内侧延伸形成用于支撑所述发声单体2的支撑壁111和围壁112，所述围壁112位于所述支撑壁111的外侧且抵接于所述支撑壁111的外侧壁。
值得一提的是，所述壳体1可为一体结构，也可以为分体结构，比如，本实施方式中，所述壳体1包括上盖11以及与盖设于所述上盖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1101和后腔102。
本实施方式中，所述发声单体1固定支撑于在所述支撑壁111并与所述上盖11间隔形成所述前声腔1101，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1101和所述后腔102。具体的，所述振膜21与所述上盖11间隔设置并共同围成所述前声腔1101；所述振膜21与所述上盖11及所述下盖12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。
所述壳体1还形成有导声通道1102，所述导声通道1102将所述前声腔1101与外界连通并与所述前声腔1101共同形成前腔101。所述导声通道1102用于将所述前腔101形成侧面发声结构。
所述第一盖板3完全盖设于所述围壁112上，且所述围壁112、所述第一盖板3、所述壳体1以及所述支撑壁111共同围成辅助声腔103，所述支撑壁111设有贯穿其上的第一通孔1110，所述辅助声腔103通过所述第一通孔1110与所述前腔101连通以形成所述前腔101的谐振腔结构，用于改善高频声学性能。
所述围壁112内侧凸出延伸形成与所述支撑壁111连接的分隔板5，所述分隔板5固定收容于所述辅助声腔103内并将所述辅助声腔103分隔成第一腔1031和第二腔1032，所述第一腔1031通过所述第一通孔1110与所述前腔101连通；所述分隔板5设有贯穿其上的第二通孔50，所述第二腔1032通过所述第二通孔50与所述第一腔1031连通。
进一步的，所述分隔板5与所述围壁112可以是一体的，也可以是分体的，比如，在本实施方式中，所述围壁112包括第一壁1121以及两个第二壁1122，所述第一壁1121与所述支撑壁111间隔设置，两个所述第二壁1122分别由所述第一壁1121相对两侧向靠近所述支撑壁111的方向延伸形成，且两个所述第二壁1122分别连接于所述支撑壁111；所述分隔板5由所述第一壁1121向靠近所述支撑壁111的方向延伸并与所述支撑壁111连接，即使得分隔板5与围壁112为一体结构，无需另外对分隔板5进行单独的装配，简化了装配工序；当然，分隔板也可以是单独的板件结构，此时，围壁内侧呈中空，在装配时，需要将分隔板固定于围壁的内侧，以实现对辅助声腔进行分腔。
更进一步的，所述壳体1远离所述围壁112一侧凹陷形成与所述第一腔1031连通的收容槽110，更具体的，所述收容槽110由所述上盖11远离所述围壁112一侧凹陷形成，所述第二盖板4盖设于所述收容槽110并与所述分隔板5相对间隔设置。
所述第一腔1031由所述支撑壁111、所述围壁112、所述分隔板5以及所述第二盖板4共同围成，所述第二腔1032由所述支撑壁111、所述围壁112、所述分隔板5以及所述第一盖板3共同围成。
上述结构中，通过所述第一腔1031和所述第二腔1032的共同设置，使得所述扬声器箱100形成具有双腔体结构的谐振腔结构，该结构有效增加了所述前腔101的腔体体积，改善高频声学性能，同时，双腔体结构的谐振腔结构更有效地降低扬声器箱100的高频共振峰的Q值（品质因素值）和灵敏度，使得所述扬声器箱100的高频声学性能更优，从而提高用户对高频声音的听感体验。
需要说明的是，所述第一腔1031通过所述第一通孔1110与所述前声腔1101连通。当然，第一腔通过第一通孔与导声通道连通也是可行的，其原理一样。
更优的，所述扬声器箱100还包括贴合于所述分隔板5且完全覆盖所述第二通孔50的透气阻尼件6，所述第二腔1032通过所述透气阻尼件6与所述第一腔1031连通，有效地增加了所述第一腔1031与所述第二腔1032之间的阻尼，更进一步地改善高频声学性能。
具体的，所述发声单体2通过胶水粘结固定于所述支撑壁111上，所述第一盖板3与所述围壁112的连接处打胶密封，而所述第二盖板4与所述上盖11的连接处打胶密封，提高了所述前声腔1101、所述第一腔1031和所述第二腔1032的密闭性，使得高频声学性能更优。
更优的，所述第一盖板3和所述第二盖板4均由软性材料PET材料制成，能够有效降低谐振腔的谐振峰和失真，进而使得高频声学性能更优，当然，所述盖板的材料不限于此，只要能够有效降低谐振腔的谐振峰和失真的其他材料制成的盖板，其原理一样。
更优的，所述围壁112可以有一个或多个且其设置的位置也有多种，本实施方式中，所述围壁112设有一个。根据声学性能调节的需要，可以通过增添围壁的个数和与围壁对应配合的第一盖板、第二盖板及分隔板的个数，形成多个具有双腔体的谐振腔来增加前腔的腔体体积，或直接通过调整围壁设置的位置，进而更好地改善高频声学性能。
请参阅图8相关技术具有单腔体的谐振腔结构的扬声器箱的频率响应曲线图，相关技术的扬声器箱的工作频率处于5500~6000Hz的水平时，该扬声器箱的声压级均大于100dB。当其达到5700Hz时，该扬声器箱的声压级达到峰值，峰值大于100.5dB。根据图表分析，在工作频率处于5500~6000Hz的水平时，该扬声器箱声压级高，其实际听感高频较为刺耳，特别是唇齿音很尖锐，高频声学性能差。
请参阅图9本发明具有双腔体的谐振腔结构的扬声器件的频率响应曲线图，本发明扬声器箱的频响曲线的峰值均小于100dB。综上分析，本发明扬声器箱有效改善高频声学性能。
请参阅图6本发明扬声器箱通过调整谐振腔的个数和位置的不同实施例的频率响应曲线图。在工作频率处于4000~6000Hz的水平时，相较于图4所示相关技术扬声器箱的频响曲线，本发明扬声器箱三个不同实施例的扬声器箱的频响曲线对应的声压级水平均有所降低且均有峰值。其中一个实施例扬声器箱的频响曲线的峰值最高，在工作频率为5000Hz时，其峰值所对应的声压级小于102dB。综上分析，本发明扬声器箱有效改善高频声学性能。
与相关技术相比，本发明的扬声器箱中，第一盖板、壳体以及支撑壁共同围成辅助声腔，分隔板固定收容于辅助声腔内并将辅助声腔分隔成第一腔和第二腔；支撑壁设有贯穿其上的第一通孔，分隔板设有贯穿其上的第二通孔，第一腔通过第一通孔与前腔连通；第二腔通过第二通孔与第一腔连通；上述结构中，通过第一腔和第二腔的共同设置，使得扬声器箱形成具有双腔体结构的谐振腔结构，通过谐振腔结构有效地降低扬声器箱的高频共振峰的Q值（品质因素值）和灵敏度，使得扬声器箱的高频声学性能更优，从而提高用户对高频声音的听感体验。
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壳体和收容于所述收容空间内的发声单体，所述壳体的内侧延伸形成用于支撑所述发声单体的支撑壁，且所述壳体内还形成有导声通道，所述发声单体固定支撑于所述支撑壁，所述发声单体包括用于振动发声的振膜，所述振膜将所述壳体分隔成 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形成前腔，其特征在于，所述扬声器箱还包括第一盖板，所述壳体的内侧延伸形成且位于支撑壁外侧的围壁，所述围壁内侧凸出延伸形成与所述支撑壁连接的分隔板，所述第一盖板盖设于所述围壁，所述围壁、所述第一盖板、所述壳体以及所述支撑壁共同围成辅助声腔；所述支撑壁设有贯穿其上的第一通孔，所述分隔板固定收容于所述辅助声腔内并将所述辅助声腔分隔成第一腔和第二腔，所述分隔板设有贯穿其上的第二通孔，所述第一腔通过所述第一通孔与所述前腔连通；所述第二腔通过所述第二通孔与所述第一腔连通。
  2. 根据权利要求1所述的扬声器箱，其特征在于，所述第一腔通过所述第一通孔与所述前声腔连通。
  3. 根据权利要求1所述的扬声器箱，其特征在于，所述扬声器箱还包括贴合于所述分隔板且完全覆盖所述第二通孔的透气阻尼件，所述第二腔通过所述透气阻尼件与所述第一腔连通。
  4. 根据权利要求1所述的扬声器箱，其特征在于，所述围壁包括第一壁以及两个第二壁，所述第一壁与所述支撑壁间隔设置，两个所述第二壁分别由所述第一壁相对两侧向靠近所述支撑壁的方向延伸形成，且两个所述第二壁分别连接于所述支撑壁；所述分隔板由所述第一壁向靠近所述支撑壁的方向延伸并与所述支撑壁连接。
  5. 根据权利要求4所述的扬声器箱，其特征在于，所述扬声器箱还包括第二盖板，所述壳体远离所述围壁一侧凹陷形成与所述第一腔连通的收容槽，所述第二盖板盖设于所述收容槽并与所述分隔板相对间隔设置；所述支撑壁、所述围壁、所述分隔板及所述第二盖板共同围成所述第一腔，所述支撑壁、所述围壁、所述分隔板与所述第一盖板共同围成所述第二腔。
  6. 根据权利要求5所述的扬声器箱，其特征在于，所述壳体包括上盖及盖设于所述上盖并共同围成所述收容空间的下盖，所述支撑壁与所述围壁均形成于所述上盖，所述收容槽由所述上盖远离所述围壁一侧凹陷形成，所述发声单体固定支撑于所述支撑壁并与所述上盖间隔形成所述前声腔。
  7. 根据权利要求6所述的扬声器箱，其特征在于，所述发声单体通过胶水粘结固定于所述支撑壁，所述第一盖板与所述围壁的连接处打胶密封，所述第二盖板与所述上盖的连接处打胶密封。
  8. 根据权利要求5所述的扬声器箱，其特征在于，所述第一盖板和所述第二盖板均为PET材料制成。
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