WO2022000544A1 - 扬声器箱 - Google Patents

扬声器箱 Download PDF

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Publication number
WO2022000544A1
WO2022000544A1 PCT/CN2020/101480 CN2020101480W WO2022000544A1 WO 2022000544 A1 WO2022000544 A1 WO 2022000544A1 CN 2020101480 W CN2020101480 W CN 2020101480W WO 2022000544 A1 WO2022000544 A1 WO 2022000544A1
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WO
WIPO (PCT)
Prior art keywords
rear cavity
sound
speaker box
cavity
upper cover
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PCT/CN2020/101480
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English (en)
French (fr)
Inventor
李红
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 WO2022000544A1 publication Critical patent/WO2022000544A1/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
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the utility model relates to the field of sound and electricity, in particular to a speaker box.
  • sound-absorbing particles are usually filled in the auxiliary sound cavity of the speaker box to form a D-BASS virtual sound cavity.
  • the purpose of the utility model is to provide a loudspeaker box to solve the technical problem of serious abrasion of bass particles caused by the violent movement of the bass.
  • a loudspeaker enclosure comprising:
  • the casing has a receiving space
  • a sounding unit is accommodated in the accommodating space, and the sounding unit divides the accommodating space into a front cavity and a rear cavity;
  • the rear cavity has a first rear cavity and a second rear cavity, the second rear cavity is filled with sound-absorbing particles, and the inner side of the second rear cavity is provided with a resistance that can block the movement of the sound-absorbing particles. Broken tendons.
  • the number of said blocking ribs is set to one or at least two.
  • the blocking rib is elongated.
  • the second rear cavity is elongated, and the blocking rib extends along the width direction of the second rear cavity.
  • the housing includes an upper cover and a lower cover that is enclosed with the upper cover to form the receiving space, the sounding unit and the upper cover enclose the front cavity, the sounding unit, the lower cover Together with the upper cover to form the rear cavity, the speaker box further includes a ventilating isolation component and a blocking wall extending from one of the upper cover and the lower cover to the other, and the ventilating isolation component is fixed on the The retaining wall and the retaining wall divide the rear cavity into the first rear cavity and the second rear cavity, and the air-permeable isolation component is connected to two spaced opposite sides of the retaining wall, The blocking rib is connected to the blocking rib.
  • the side of the blocking rib facing away from the air-permeable isolation assembly is spaced apart from the inner side surface of the casing.
  • the upper cover is provided with a through groove extending through the lower cover corresponding to the second rear cavity, a cover plate is connected to the upper cover of the through groove, and a powder filling hole is opened on the cover plate.
  • the beneficial effect of the utility model is that: by filling the second rear cavity with sound-absorbing particles (not shown in the figure), the second rear cavity forms a D-BASS virtual sound cavity, so as to improve the acoustic performance of the speaker box.
  • the length of the second rear cavity is long, blocking ribs are protruded on the inner side of the second rear cavity, and the blocking ribs can block the movement of the sound-absorbing particles, further reducing the wear and tear of the sound-absorbing particles.
  • the change of the lowest resonant frequency (F0) therefore, effectively improves the acoustic performance of the speaker cabinet with a longer virtual cavity length.
  • FIG. 1 is a schematic structural diagram of a speaker box provided by an embodiment of the present invention.
  • Fig. 2 is a sectional view along line A-A in Fig. 1;
  • FIG. 3 is a schematic structural diagram of the speaker box in FIG. 1 with a lower cover removed;
  • FIG. 4 is a schematic view of the structure of FIG. 3 with the air-permeable isolation component removed.
  • Speaker box 1. Shell; 10. Receiving space; 2. Sound producing unit; 101. Front cavity; 102. Rear cavity; 1021. First rear cavity; 1022, Second rear cavity; 3. Blocking ribs ; 11, upper cover; 12, lower cover; 4, ventilation isolation components; 13, retaining wall; 110, through groove; 113, cover plate; 1130, powder filling hole; 1131, sealing cover.
  • an embodiment of the present invention provides a speaker box 100, including:
  • a housing 1 having a housing space 10, the housing 1 having a housing space 10;
  • the sounding unit 2 is accommodated in the accommodating space 10.
  • the sounding unit 2 divides the accommodating space 10 into a front cavity 101 and a rear cavity 102; the rear cavity 102 has a first rear cavity 1021 and a second Two rear cavities 1022, the second rear cavity 1022 is filled with sound-absorbing particles, and the inner side of the second rear cavity 1022 is protruded with blocking ribs 3 that can block the movement of the sound-absorbing particles, so as to reduce the The lowest resonant frequency caused by the wear of the sound-absorbing particles.
  • the air in the second rear cavity 1022 can be adsorbed, and the air compliance can be improved, thereby achieving The low-frequency resonance frequency of the speaker box 100 is lowered, thereby improving the low-frequency performance, so that the second rear cavity 1022 forms a D-BASS virtual sound cavity, thereby improving the bass effect.
  • the length of the second rear cavity 1022 is relatively long, by protruding the blocking rib 3 on the inner side of the second rear cavity 1022, the blocking rib 3 can block the movement of the sound-absorbing particles, thereby preventing the movement of the sound-absorbing particles.
  • the minimum resonance frequency (F0) can be reduced by 10-30HZ. Therefore, the virtual sound cavity length is effectively improved. the acoustic performance of the speaker enclosure 100.
  • each blocking rib 3 is equally spaced.
  • the blocking ribs 3 are elongated.
  • the second rear cavity 1022 is elongated, and the blocking rib 3 extends along the width direction of the second rear cavity 1022 .
  • the sound-absorbing particles are more likely to move along the length direction of the second rear cavity 1022, and in this way, the effect of blocking the movement of the sound-absorbing particles is better, thereby reducing the wear of the sound-absorbing particles.
  • the casing 1 includes an upper cover 11 and a lower cover 12 enclosed with the upper cover 11 to form the receiving space 10 .
  • the sounding unit 2 and the upper cover 11 enclose the front cavity 101 .
  • the sound-generating unit 2, the lower cover 12 and the upper cover 11 together form a rear cavity 102.
  • the speaker box 100 further includes a ventilating isolation component 4 and a direction from one of the upper cover 11 and the lower cover 12 to the other.
  • the extended retaining wall 13, the ventilation isolation component 4 is fixed to the retaining wall 13 and together with the retaining wall 13 divides the rear cavity 102 into the first rear cavity 1021 and the second rear cavity 1022 , the blocking rib 3 is connected to two spaced opposite sides of the blocking wall 13 , and the air-permeable isolation component 4 is connected to the blocking rib 3 .
  • the side of the blocking rib 3 facing away from the air-permeable isolation assembly 4 is spaced apart from the inner side surface of the housing 1 .
  • the upper cover 11 defines a through groove 110 penetrating the upper cover 11 corresponding to the second rear cavity 1022 , and a cover plate 113 is connected to the upper cover 11 in the through groove 110 .
  • the cover plate 113 is provided with a powder filling hole 1130 , and the sound-absorbing particles are loaded into the second rear cavity 1022 through the powder filling hole 1130 .
  • the speaker box 100 further includes a sealing cover 1131 covering the powder filling hole 1130 .
  • the length of the second rear cavity 1022 is greater than or equal to 10 mm.

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  • 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

本实用新型提供一种扬声器箱，扬声器箱包括壳体和发声单体，所述壳体具有收容空间；发声单体收容于所述收容空间内，所述发声单体将所述收容空间分隔为前腔和后腔；所述后腔具有第一后腔和第二后腔，所述第二后腔内填充吸音颗粒，所述第二后腔的内侧面设置有可对所述吸音颗粒的运动进行阻断的阻断筋。通过在所述第二后腔内设置有可对所述吸音颗粒的运动进行阻断的阻断筋，进一步降低因吸音颗粒磨损带来的最低共振频率（F0）的变化，因此，有效改善了虚拟声腔长度较长的扬声器箱的声学性能。

Description

扬声器箱 技术领域
本实用新型涉及声电领域，尤其涉及一种扬声器箱。
 背景技术
为了提高扬声器箱的低频声学性能，通常会在扬声器箱的辅助发声腔内填设吸音颗粒形成D-BASS虚拟声腔。
 技术问题
但是当D-BASS虚拟声腔的长度较长时，研究发现经过长期功率类实验（48H以上），吸音颗粒（bass）运动剧烈会造成吸音颗粒（bass）颗粒磨损严重，引起最低共振频率（F0）的巨大变化，振幅降低，丧失扩容效果，降低低频性能，安装于移动终端时，整机功耗变高。
因此，有必要提供一种减缓吸音颗粒（bass）运动并减少对bass颗粒磨损的扬声器箱。
 技术解决方案
本实用新型的目的在于提供一种扬声器箱，以解决因bass运动剧烈引起bass颗粒磨损严重的技术问题。
本实用新型的目的之一提供的技术方案如下：
一种扬声器箱，包括：
壳体，所述壳体具有收容空间；
发声单体，收容于所述收容空间内，所述发声单体将所述收容空间分隔为前腔和后腔；
所述后腔具有第一后腔和第二后腔，所述第二后腔内填充吸音颗粒，所述第二后腔的内侧面设置有可对所述吸音颗粒的运动进行阻断的阻断筋。
进一步地，所述阻断筋设置为1个或至少2个。
进一步地，所述阻断筋呈长条状。
进一步地，所述第二后腔呈长条形，所述阻断筋沿所述第二后腔的宽度方向延伸。
进一步地，所述壳体包括上盖、与所述上盖围合形成所述收容空间的下盖，所述发声单体和上盖围成所述前腔，所述发声单体、下盖和上盖共同围成所述后腔，所述扬声器箱还包括透气隔离组件和自所述上盖和所述下盖中一者向另一者延伸的挡墙，所述透气隔离组件固定于所述挡墙并与所述挡墙共同将所述后腔分隔为所述第一后腔和所述第二后腔，所述透气隔离组件连接于所述挡墙的两间隔相对的侧面，所述阻断筋连接于所述阻断筋。
进一步地，所述阻断筋背离所述透气隔离组件的一侧与所述壳体的内侧面间隔设置。
进一步地，所述上盖对应所述第二后腔开设有贯穿所述下盖的通槽，所述通槽上盖接有盖板，所述盖板上开设有灌粉孔。
 有益效果
本实用新型的有益效果在于：通过在第二后腔内填充吸音颗粒（图中未示出），使第二后腔形成D-BASS虚拟声腔，以改善扬声器箱的声学性能。在第二后腔的长度较长时，在第二后腔的内侧面凸设阻断筋，所述阻断筋可对所述吸音颗粒的运动进行阻断，进一步降低因吸音颗粒磨损带来的最低共振频率（F0）的变化，因此，有效改善了虚拟声腔长度较长的扬声器箱的声学性能。
 附图说明
图1为本实用新型实施例提供的扬声器箱的结构示意图；
图2为图1中沿线A-A的剖视图；
图3为图1中扬声器箱去除下盖的结构示意图；
图4为图3去除透气隔离组件的结构示意图。
图中：
100、扬声器箱；1、壳体；10、收容空间；2、发声单体；101、前腔；102、后腔；1021、第一后腔；1022、第二后腔；3、阻断筋；11、上盖；12、下盖；4、透气隔离组件；13、挡墙；110、通槽；113、盖板；1130、灌粉孔；1131、密封盖。
 本发明的实施方式
下面结合图1至图4对本实用新型作详细描述。
请参阅图1至图4，本实用新型实施例提供一种扬声器箱100，包括：
具有收容空间10的壳体1，所述壳体1具有收容空间10；
发声单体2，以及收容于所述收容空间10内，所述发声单体2将所述收容空间10分隔为前腔101和后腔102；所述后腔102具有第一后腔1021和第二后腔1022，所述第二后腔1022内填充吸音颗粒，所述第二后腔1022的内侧面凸设有可对所述吸音颗粒的运动进行阻断的阻断筋3，以降低所述吸音颗粒磨损带来的最低共振频率。
通过在第二后腔1022内填充吸音颗粒（图中未示出），由于所述吸音颗粒具有多孔结构和高比容量，可吸附第二后腔1022中的空气，提升空气顺性，从而达到降低扬声器箱100的低频谐振频率，进而改善低频性能，使第二后腔1022形成D-BASS虚拟声腔，改善低音效果。在第二后腔1022的长度较长时，通过在所述第二后腔1022的内侧面凸设阻断筋3，所述阻断筋3可对所述吸音颗粒的运动进行阻断，从而降低对吸音颗粒的磨损，进一步降低因吸音颗粒磨损带来的最低共振频率（F0）的变化，一般地，可降低最低共振频率（F0）10-30HZ，因此，有效改善了虚拟声腔长度较长的扬声器箱100的声学性能。
优选所述阻断筋3设置为1个或至少2个。若阻断筋3设置为1个，优选阻断筋3沿第二后腔1022的长度方向居中设置，若阻断筋3设置为2个或2个以上，各阻断筋3等距离设置。
优选所述阻断筋3呈长条状。
优选所述第二后腔1022呈长条形，所述阻断筋3沿所述第二后腔1022的宽度方向延伸。一般地，吸音颗粒更易沿第二后腔1022的长度方向运动，这样设置，对吸音颗粒的运动进行阻断效果更好，从而减少吸音颗粒的磨损。
优选所述壳体1包括上盖11、与所述上盖11围合形成所述收容空间10的下盖12，所述发声单体2和上盖11围成所述前腔101，所述发声单体2、下盖12和上盖11共同围成后腔102，所述扬声器箱100还包括透气隔离组件4和自所述上盖11和所述下盖12中一者向另一者延伸的挡墙13，所述透气隔离组件4固定于所述挡墙13并与所述挡墙13共同将所述后腔102分隔为所述第一后腔1021和所述第二后腔1022，所述阻断筋3连接于所述挡墙13的两间隔相对的侧面，所述透气隔离组件4连接于所述阻断筋3。
优选所述阻断筋3背离所述透气隔离组件4的一侧与所述壳体1的内侧面间隔设置。如此，阻断筋3与壳体1之间留有空隙，有利于空气流通，从而避免因为阻断筋3的设置阻挡空气流通，从而阻断筋3既可以阻挡吸音颗粒的运动，又不会影响空气流通，保证低音效果。
优选所述上盖11对应所述第二后腔1022开设有贯穿所述上盖11的通槽110，所述通槽110上盖11接有盖板113。所述盖板113上开设有灌粉孔1130，通过灌粉孔1130将吸音颗粒装入第二后腔1022，所述扬声器箱100还包括覆盖所述灌粉孔1130的密封盖1131。
优选所述第二后腔1022的长度≥10mm。
以上所述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 (7)

  1. 一种扬声器箱，其特征在于，包括：
    壳体，所述壳体具有收容空间；
    发声单体，收容于所述收容空间内，所述发声单体将所述收容空间分隔为前腔和后腔；
    所述后腔具有第一后腔和第二后腔，所述第二后腔内填充吸音颗粒，所述第二后腔的内侧面设置有可对所述吸音颗粒的运动进行阻断的阻断筋。
  2. 根据权利要求1所述的扬声器箱，其特征在于：所述阻断筋设置为1个或至少2个。
  3. 根据权利要求1所述的扬声器箱，其特征在于：所述阻断筋呈长条状。
  4. 根据权利要求1所述的扬声器箱，其特征在于：所述第二后腔呈长条形，所述阻断筋沿所述第二后腔的宽度方向延伸。
  5. 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、与所述上盖围合形成所述收容空间的下盖，所述发声单体和上盖围成所述前腔，所述发声单体、下盖和上盖共同围成所述后腔，所述扬声器箱还包括透气隔离组件和自所述上盖和所述下盖中一者向另一者延伸的挡墙，所述透气隔离组件固定于所述挡墙并与所述挡墙共同将所述后腔分隔为所述第一后腔和所述第二后腔，所述阻断筋连接于所述挡墙的两间隔相对的侧面，所述透气隔离组件连接于所述阻断筋。
  6. 根据权利要求5所述的扬声器箱，其特征在于：所述阻断筋背离所述透气隔离组件的一侧与所述壳体的内侧面间隔设置。
  7. 根据权利要求5所述的扬声器箱，其特征在于：所述上盖对应所述第二后腔开设有贯穿所述上盖的通槽，所述通槽上盖接有盖板，所述盖板上开设有灌粉孔。
PCT/CN2020/101480 2020-06-29 2020-07-10 扬声器箱 WO2022000544A1 (zh)

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CN202021233681.3U CN212519304U (zh) 2020-06-29 2020-06-29 扬声器箱

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