WO2022067976A1 - 扬声器箱 - Google Patents

扬声器箱 Download PDF

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Publication number
WO2022067976A1
WO2022067976A1 PCT/CN2020/127835 CN2020127835W WO2022067976A1 WO 2022067976 A1 WO2022067976 A1 WO 2022067976A1 CN 2020127835 W CN2020127835 W CN 2020127835W WO 2022067976 A1 WO2022067976 A1 WO 2022067976A1
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WIPO (PCT)
Prior art keywords
magnetic yoke
wall
sound
magnetic
extension wall
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Ceased
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PCT/CN2020/127835
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English (en)
French (fr)
Inventor
宋威
令狐荣林
肖波
孔晨亮
章统
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
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AAC Acoustic Technologies Shenzhen Co Ltd
AAC Technologies Pte Ltd
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Application filed by AAC Acoustic Technologies Shenzhen Co Ltd, AAC Technologies Pte Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Publication of WO2022067976A1 publication Critical patent/WO2022067976A1/zh
Anticipated expiration legal-status Critical
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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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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.
  • a related art speaker box includes a housing with a receiving space and a sound-generating unit accommodated in the receiving space and used for sound production, and the sound-emitting unit divides the receiving space into a front sound cavity and a rear sound cavity opposite to the front sound cavity.
  • the sound-generating unit includes a basin frame, a vibration system respectively fixed to the basin frame, and a magnetic circuit system that drives the vibration system to vibrate and emit sound.
  • the purpose of the utility model is to provide a speaker box with better acoustic performance.
  • the present invention provides a loudspeaker box, which includes a housing with a receiving space and a sounding unit housed in the receiving space and used for sounding, and the sounding unit divides the receiving space into A front acoustic cavity and a rear cavity opposite to the front acoustic cavity, the sound generating unit includes a basin frame, a vibration system respectively fixed to the basin frame, and a magnetic circuit system for driving the vibration system to vibrate and emit sound,
  • the magnetic circuit system includes a magnetic yoke fixed on the side of the basin frame close to the rear cavity and a magnetic steel unit assembly fixed on the side of the magnetic yoke away from the rear cavity
  • the magnetic yoke includes a A yoke base plate arranged at intervals in the housing, a yoke side wall that is bent and extended from the periphery of the yoke base plate to the direction close to the vibration system, and an end of the yoke side wall that is far away from the yoke base plate is bent
  • the extended magnetic yoke side plate, the end of the magnetic yoke side plate away from the magnetic yoke side wall abuts on the basin frame, the magnetic yoke bottom plate and the magnetic yoke side wall together form a storage space, the The magnetic steel unit assembly is accommodated in the accommodation space;
  • the side plate of the magnetic yoke is provided with a recess formed by the side of the yoke close to the rear cavity, which is recessed toward the vibration system.
  • the rear cavity is used to fill the sound-absorbing particles.
  • the yoke side plate includes a first extension wall bent and extended from an end of the yoke side wall away from the yoke bottom plate, and an end of the first extension wall away from the yoke side wall A second extension wall that is bent and extended toward the vibration system and a third extension wall that is bent and extended from an end of the second extension wall away from the first extension wall, the third extension wall is far away from the One end of the second extension wall is abutted against the basin frame; the escape portion falls on the first extension wall and the second extension wall simultaneously along the orthographic projection of the vibration direction of the vibration system.
  • the escape portion includes a first wall that is bent and extended along the vibration direction of the vibration system from the portion of the first extension wall close to the escape portion, the second extension wall and the third extension wall.
  • the part of the extension wall close to the escape part is a second wall that is bent and extended along the vibration direction of the vibration system, and a third wall that is connected to the first wall and the second wall.
  • the escape parts include at least two and are symmetrically arranged with each other.
  • the first extension wall further includes a leakage hole extending therethrough and located between two adjacent escape portions.
  • the leakage holes include at least four and are respectively arranged symmetrically.
  • the side plate of the magnetic yoke is provided with an escape portion formed by the side of the yoke close to the rear cavity, which is recessed in the direction close to the vibration system.
  • the basin frame and the shell together form the back cavity, and the back cavity is used to fill the sound-absorbing particles; with this structure, under the condition that the overall size of the speaker box is not increased, the avoidance part setting, leaving more space for the rear cavity, increasing the size of the rear cavity, further increasing the space for filling sound-absorbing particles, improving the low-frequency performance of the speaker box, reducing the power consumption of the product, and improving the acoustic performance .
  • Fig. 1 is the stereo structure schematic diagram of the speaker box of the present invention
  • Fig. 2 is the stereoscopic structure exploded schematic diagram of the speaker box of the present invention
  • FIG. 3 is a cross-sectional view of the speaker box of the present invention.
  • FIG. 4 is a schematic structural diagram of the inner folding ring, the first fixing part and the second fixing part of the present invention.
  • the present invention provides a speaker box 100 , which includes a housing 1 having a receiving space 10 and a sounding unit 2 received in the receiving space 10 and used for sound production.
  • the unit 2 divides the receiving space 10 into a front acoustic cavity 101 and a rear cavity 102 opposite to the front acoustic cavity 101 .
  • the casing 1 includes an upper casing 11 and a lower casing 12 covering the upper casing 11 and enclosing a receiving space 10 with the upper casing.
  • the loudspeaker box 100 further includes a cover plate 3 covering the powder filling hole 121, and the upper shell includes a sounding port 1a passing through it and used for sounding.
  • the sound generating unit 2 includes a basin frame 21 , a vibration system 22 respectively fixed to the basin frame 21 , and a magnetic circuit system 23 for driving the vibration system 22 to vibrate and produce sound.
  • the magnetic circuit system 23 includes a magnetic yoke 231 fixed on the side of the basin frame 21 close to the rear cavity 102 and a magnetic steel unit assembly 232 fixed on the side of the magnetic yoke 231 away from the rear cavity 102 .
  • the magnetic yoke 231 includes a magnetic yoke bottom plate 2311 spaced from the housing 1 , a magnetic yoke side wall 2312 bent and extended from the periphery of the magnetic yoke bottom plate 2311 toward the vibration system 22 , and a One end of the yoke side wall 2312 away from the yoke bottom plate 2311 is a yoke side plate 2313 which is bent and extended.
  • the end of the yoke side plate 2313 away from the yoke side wall 2312 is in contact with the basin frame 21 , and the yoke bottom plate 2311 and the yoke side wall 2312 together form a storage space 2310 .
  • the steel unit assembly 232 is accommodated in the accommodation space 2310 .
  • the side plate 2313 of the magnetic yoke is provided with a recessed portion 2314 formed by the side close to the rear cavity 102 in the direction close to the vibration system 22.
  • the magnetic yoke 231, the basin frame 21 and the shell The body 1 together forms the rear cavity 102, and the rear cavity 102 is used for filling sound-absorbing particles to improve low frequency performance. Due to the arrangement of the avoidance portion 2314, more space is reserved for the rear cavity 102, the size of the rear cavity 102 is increased, the space for filling sound-absorbing particles is further increased, and the low frequency performance of the speaker box 100 is improved. Reduce product power consumption and better acoustic performance.
  • the avoidance parts 2314 include at least two and are symmetrically arranged with each other.
  • the yoke side plate 2313 includes a first extension wall 23131 bent and extended from one end of the yoke side wall 2312 away from the yoke bottom plate 2311 , and the first extension wall 23131 is away from the magnetic
  • One end of the yoke side wall 2312 is a second extension wall 23132 bent and extended toward the vibration system 22 and a third extension wall is bent and extended from an end of the second extension wall 23132 away from the first extension wall 23131 23133, the end of the third extension wall 23133 away from the second extension wall 23132 abuts against the basin frame 21; the escape portion 2314 falls into the An extension wall 23131 and the second extension wall 23132 are above. That is, the avoidance portion 2314 does not occupy the space of the magnetic steel unit assembly 232, and the space utilization rate is high.
  • the first extension wall 23131 further includes a leakage hole 23130 extending therethrough and located between two adjacent escape portions 2314, and the leakage hole 23130 is used to balance the air pressure.
  • the leakage holes 23130 include at least four and are respectively symmetrically arranged.
  • the escape portion 2314 includes a first wall 23141 that is bent and extended along the vibration direction of the vibration system 22 from the portion of the first extension wall 23131 close to the escape portion 2314 , and the second extension wall
  • the part of 23132 and the third extension wall 23133 close to the escape part 2314 is a second wall 23142 that is bent and extended along the vibration direction of the vibration system 22, connected to the first wall 23141 and the second wall 23142
  • the side of the third wall 23143 away from the first wall 23141 abuts against the basin frame 21 .
  • the side plate of the magnetic yoke is provided with an escape portion formed by the side of the yoke close to the rear cavity, which is recessed in the direction close to the vibration system.
  • the basin frame and the shell together form the back cavity, and the back cavity is used for filling sound-absorbing particles; with this structure, under the condition that the overall size of the speaker box is not increased, the avoidance portion setting, leaving more space for the rear cavity, increasing the size of the rear cavity, further increasing the space for filling sound-absorbing particles, improving the low-frequency performance of the speaker box, reducing the power consumption of the product, and improving the acoustic performance .
  • the present invention provides an embodiment of the present invention as described above, which is not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and accompanying drawings of the present invention, or Directly or indirectly used in other related technical fields are all included in the scope of patent protection of the present invention.

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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箱，其包括具有收容空间的壳体以及发声单体，发声单体将收容空间分隔为前声腔和与前声腔相对的后腔，发声单体包括盆架、分别固定于盆架的振动系统以及驱动振动系统振动发声的磁路系统，磁路系统包括固定于盆架靠近后腔一侧的磁轭以及固定于磁轭远离后腔一侧的磁钢单元组件，磁轭包括磁轭底板、由磁轭底板弯折延伸的磁轭侧壁以及由磁轭侧壁弯折延伸的磁轭侧板，磁轭侧板远离磁轭侧壁的一端抵接于盆架；磁轭侧板设有由其靠近后腔的一侧向靠近振动系统方向凹陷形成的避让部，磁轭、盆架以及壳体共同围成后腔，后腔用于填充吸音颗粒。与相关技术相比，本实用新型的扬声器箱声学性能更好。

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
随着互联网时代的到来，移动终端设备的数量不断上升。而在移动设备中，手机无疑是最常见且最便携的移动终端设备。用于播放音乐等声音的扬声器箱被大量的运用到手机等移动终端设备中。
相关技术扬声器箱包括具有收容空间的壳体以及收容于所述收容空间且用于发声的发声单体，所述发声单体将所述收容空间分隔为前声腔和与所述前声腔相对的后腔，所述发声单体包括盆架、分别固定于所述盆架的振动系统以及驱动所述振动系统振动发声的磁路系统，所述磁路系统包括固定于所述盆架靠近所述后腔一侧的磁轭以及固定于所述磁轭远离所述后腔一侧的磁钢单元组件。
然而，由于所述磁路系统占据所述后腔较大空间，使得所述扬声器箱的低频性能较差。
因此，有必要提供一种新的扬声器箱解决上述问题。
 技术问题
本实用新型的目的在于提供一种声学性能更好的扬声器箱。
 技术解决方案
为达到上述目的，本实用新型提供一种扬声器箱，其包括具有收容空间的壳体以及收容于所述收容空间且用于发声的发声单体，所述发声单体将所述收容空间分隔为前声腔和与所述前声腔相对的后腔，所述发声单体包括盆架、分别固定于所述盆架的振动系统以及驱动所述振动系统振动发声的磁路系统，
所述磁路系统包括固定于所述盆架靠近所述后腔一侧的磁轭以及固定于所述磁轭远离所述后腔一侧的磁钢单元组件，所述磁轭包括与所述壳体间隔设置的磁轭底板、由所述磁轭底板的周缘向靠近所述振动系统方向弯折延伸的磁轭侧壁以及由所述磁轭侧壁远离所述磁轭底板的一端弯折延伸的磁轭侧板，所述磁轭侧板远离所述磁轭侧壁的一端抵接于所述盆架，所述磁轭底板和所述磁轭侧壁共同围成收纳空间，所述磁钢单元组件收容于所述收纳空间；
所述磁轭侧板设有由其靠近所述后腔的一侧向靠近所述振动系统方向凹陷形成的避让部，所述磁轭、所述盆架以及所述壳体共同围成所述后腔，所述后腔用于填充吸音颗粒。
优选的，所述磁轭侧板包括由所述磁轭侧壁远离所述磁轭底板的一端弯折延伸的第一延伸壁、由所述第一延伸壁远离所述磁轭侧壁的一端向靠近所述振动系统方向弯折延伸的第二延伸壁以及由所述第二延伸壁远离所述第一延伸壁的一端弯折延伸的第三延伸壁，所述第三延伸壁远离所述第二延伸壁的一端抵接于所述盆架；所述避让部沿所述振动系统振动方向的正投影同时落入所述第一延伸壁和所述第二延伸壁之上。
优选的，所述避让部包括由所述第一延伸壁靠近所述避让部的部分沿所述振动系统的振动方向弯折延伸的第一壁、由所述第二延伸壁和所述第三延伸壁靠近所述避让部的部分沿所述振动系统的振动方向弯折延伸的第二壁、连接于所述第一壁和所述第二壁的第三壁。
优选的，所述避让部包括至少两个且相互对称设置。
优选的，所述第一延伸壁还包括贯穿其上且位于相邻两个所述避让部之间的泄露孔。
优选的，所述泄露孔包括至少四个且分别呈对称设置。
 有益效果
与相关技术相比，本实用新型的扬声器箱，所述磁轭侧板设有由其靠近所述后腔的一侧向靠近所述振动系统方向凹陷形成的避让部，所述磁轭、所述盆架以及所述壳体共同围成所述后腔，所述后腔用于填充吸音颗粒；采用此种结构，在保证所述扬声器箱整体尺寸不增加的情况下，由于所述避让部的设置，将更多空间留给所述后腔，增大了所述后腔的大小，进一步增加用于填充吸音颗粒的空间，提升扬声器箱的低频性能，降低产品功耗，声学性能更好。
 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立体结构分解示意图；
图3为本实用新型扬声器箱的剖视图；
图4为本实用新型内折环、第一固定部以及第二固定部的结构示意图。
 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。
请参考图1-4所示，本实用新型提供一种扬声器箱100，其包括具有收容空间10的壳体1以及收容于所述收容空间10且用于发声的发声单体2，所述发声单体2将所述收容空间10分隔为前声腔101和与所述前声腔101相对的后腔102。
所述壳体1包括上壳11以及盖设于所述上壳11并与所述上壳围成收容空间10的下壳12，所述下壳12设有贯穿其上且用于灌吸音颗粒的的灌粉孔121，所述扬声器箱100还包括盖设于所述灌粉孔121的盖板3，所述上壳包括贯穿其上且用于发声的发声口1a。
所述发声单体2包括盆架21、分别固定于所述盆架21的振动系统22以及驱动所述振动系统22振动发声的磁路系统23。
所述磁路系统23包括固定于所述盆架21靠近所述后腔102一侧的磁轭231以及固定于所述磁轭231远离所述后腔102一侧的磁钢单元组件232。
所述磁轭231包括与所述壳体1间隔设置的磁轭底板2311、由所述磁轭底板2311的周缘向靠近所述振动系统22方向弯折延伸的磁轭侧壁2312以及由所述磁轭侧壁2312远离所述磁轭底板2311的一端弯折延伸的磁轭侧板2313。所述磁轭侧板2313远离所述磁轭侧壁2312的一端抵接于所述盆架21，所述磁轭底板2311和所述磁轭侧壁2312共同围成收纳空间2310，所述磁钢单元组件232收容于所述收纳空间2310。
所述磁轭侧板2313设有由其靠近所述后腔102的一侧向靠近所述振动系统22方向凹陷形成的避让部2314，所述磁轭231、所述盆架21以及所述壳体1共同围成所述后腔102，所述后腔102用于填充吸音颗粒以提升低频性能。由于所述避让部2314的设置，将更多空间留给所述后腔102，增大了所述后腔102的大小，进一步增加用于填充吸音颗粒的空间，提升扬声器箱100的低频性能，降低产品功耗，声学性能更好。
本实施例中，所述避让部2314包括至少两个且相互对称设置。
具体的，所述磁轭侧板2313包括由所述磁轭侧壁2312远离所述磁轭底板2311的一端弯折延伸的第一延伸壁23131、由所述第一延伸壁23131远离所述磁轭侧壁2312的一端向靠近所述振动系统22方向弯折延伸的第二延伸壁23132以及由所述第二延伸壁23132远离所述第一延伸壁23131的一端弯折延伸的第三延伸壁23133，所述第三延伸壁23133远离所述第二延伸壁23132的一端抵接于所述盆架21；所述避让部2314沿所述振动系统22振动方向的正投影同时落入所述第一延伸壁23131和所述第二延伸壁23132之上。即所述避让部2314未占据磁钢单元组件232的空间，空间利用率高。
所述第一延伸壁23131还包括贯穿其上且位于相邻两个所述避让部2314之间的泄露孔23130，所述泄露孔23130用于平衡气压。优选的，所述泄露孔23130包括至少四个且分别呈对称设置。
具体的，所述避让部2314包括由所述第一延伸壁23131靠近所述避让部2314的部分沿所述振动系统22的振动方向弯折延伸的第一壁23141、由所述第二延伸壁23132和所述第三延伸壁23133靠近所述避让部2314的部分沿所述振动系统22的振动方向弯折延伸的第二壁23142、连接于所述第一壁23141和所述第二壁23142的第三壁23143，第三壁23143远离第一壁23141的一侧抵接于所述盆架21。
与相关技术相比，本实用新型的扬声器箱，所述磁轭侧板设有由其靠近所述后腔的一侧向靠近所述振动系统方向凹陷形成的避让部，所述磁轭、所述盆架以及所述壳体共同围成所述后腔，所述后腔用于填充吸音颗粒；采用此种结构，在保证所述扬声器箱整体尺寸不增加的情况下，由于所述避让部的设置，将更多空间留给所述后腔，增大了所述后腔的大小，进一步增加用于填充吸音颗粒的空间，提升扬声器箱的低频性能，降低产品功耗，声学性能更好。
本实用新型提供一种以上所述仅为本实用新型的实施例，并非因此限制本实用新型的专利范围，凡是利用本实用新型说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其它相关的技术领域，均同理包括在本实用新型的专利保护范围内。

Claims (6)

  1. 一种扬声器箱，其包括具有收容空间的壳体以及收容于所述收容空间且用于发声的发声单体，所述发声单体将所述收容空间分隔为前声腔和与所述前声腔相对的后腔，所述发声单体包括盆架、分别固定于所述盆架的振动系统以及驱动所述振动系统振动发声的磁路系统，其特征在于，
    所述磁路系统包括固定于所述盆架靠近所述后腔一侧的磁轭以及固定于所述磁轭远离所述后腔一侧的磁钢单元组件，所述磁轭包括与所述壳体间隔设置的磁轭底板、由所述磁轭底板的周缘向靠近所述振动系统方向弯折延伸的磁轭侧壁以及由所述磁轭侧壁远离所述磁轭底板的一端弯折延伸的磁轭侧板，所述磁轭侧板远离所述磁轭侧壁的一端抵接于所述盆架，所述磁轭底板和所述磁轭侧壁共同围成收纳空间，所述磁钢单元组件收容于所述收纳空间；
    所述磁轭侧板设有由其靠近所述后腔的一侧向靠近所述振动系统方向凹陷形成的避让部，所述磁轭、所述盆架以及所述壳体共同围成所述后腔，所述后腔用于填充吸音颗粒。
  2. 根据权利要求1中所述的扬声器箱，其特征在于，所述磁轭侧板包括由所述磁轭侧壁远离所述磁轭底板的一端弯折延伸的第一延伸壁、由所述第一延伸壁远离所述磁轭侧壁的一端向靠近所述振动系统方向弯折延伸的第二延伸壁以及由所述第二延伸壁远离所述第一延伸壁的一端弯折延伸的第三延伸壁，所述第三延伸壁远离所述第二延伸壁的一端抵接于所述盆架；所述避让部沿所述振动系统振动方向的正投影同时落入所述第一延伸壁和所述第二延伸壁之上。
  3. 根据权利要求2中所述的扬声器箱，其特征在于，所述避让部包括由所述第一延伸壁靠近所述避让部的部分沿所述振动系统的振动方向弯折延伸的第一壁、由所述第二延伸壁和所述第三延伸壁靠近所述避让部的部分沿所述振动系统的振动方向弯折延伸的第二壁、连接于所述第一壁和所述第二壁的第三壁。
  4. 根据权利要求2中所述的扬声器箱，其特征在于，所述避让部包括至少两个且相互对称设置。
  5. 根据权利要求4中所述的扬声器箱，其特征在于，所述第一延伸壁还包括贯穿其上且位于相邻两个所述避让部之间的泄露孔。
  6. 根据权利要求5中所述的扬声器箱，其特征在于，所述泄露孔包括至少四个且分别呈对称设置。
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