WO2024045279A1 - 一种同轴扬声器 - Google Patents

一种同轴扬声器 Download PDF

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Publication number
WO2024045279A1
WO2024045279A1 PCT/CN2022/125117 CN2022125117W WO2024045279A1 WO 2024045279 A1 WO2024045279 A1 WO 2024045279A1 CN 2022125117 W CN2022125117 W CN 2022125117W WO 2024045279 A1 WO2024045279 A1 WO 2024045279A1
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WO
WIPO (PCT)
Prior art keywords
fixed
magnetic
magnet
sound
diaphragm
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PCT/CN2022/125117
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English (en)
French (fr)
Inventor
任璋
王奇
钟志威
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瑞声光电科技(常州)有限公司
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Application filed by 瑞声光电科技(常州)有限公司 filed Critical 瑞声光电科技(常州)有限公司
Priority to US18/089,579 priority Critical patent/US20240073616A1/en
Publication of WO2024045279A1 publication Critical patent/WO2024045279A1/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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • 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
    • H04R9/02—Details
    • 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
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • 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 present invention relates to the field of electroacoustic conversion, and in particular to a coaxial speaker.
  • Coaxial speakers refer to speakers that have both a treble sounding unit and a bass sounding unit, and the treble sounding unit and the bass sounding unit are coaxially arranged.
  • the tweeter unit and the bass unit of the coaxial speaker can be located together on the front of the coaxial speaker, or they can be located on the front and back of the coaxial speaker respectively.
  • the tweeter unit and the bass unit each have independent magnetic circuit systems.
  • the independent magnetic circuit systems lead to complex overall product structures, excessive stacking heights, high magnetic circuit system costs, etc. question.
  • the purpose of the present invention is to overcome the above technical problems and provide a coaxial speaker with a shared magnetic circuit system, which has a simple and compact structure, reduces costs, and can also be used as a receiver with anti-phase silencing.
  • the present invention provides a coaxial loudspeaker, which includes a magnetic circuit system, a first sound-emitting unit provided on the upper side of the magnetic circuit system, and a first sound-emitting unit provided on the lower side of the magnetic circuit system and connected with the third sound-generating unit.
  • a second sound-generating unit arranged coaxially.
  • the first sound-generating unit includes a first diaphragm and a first voice coil that drives the first diaphragm to vibrate and produce sound.
  • the second sound-generating unit includes a second diaphragm. and a second voice coil that drives the second diaphragm to vibrate and produce sounds.
  • the magnetic circuit system includes a bottom plate, and a first magnet part and a second magnet part fixed on the bottom plate.
  • the first magnet part is disposed on A first magnetic gap is formed outside the second magnet part and spaced apart from the second magnet part.
  • the first voice coil is inserted in the first magnetic gap.
  • the first magnet part includes a The first magnet on the bottom plate and the pole core fixed on the first magnet.
  • the bottom plate is provided with a first through hole.
  • the second magnet part includes a pole core fixed on the bottom plate and surrounding the first magnet.
  • An annular second magnet provided with a through hole, a yoke fixed on the second magnet and a third magnet fixed on the yoke
  • the yoke includes a A ring piece portion with a second through hole between the magnet steel and the third magnet steel and an extension wall extending from the inner peripheral edge of the ring piece portion in a direction away from the third magnet steel, the extension wall Extending from the inside of the second magnetic steel into the first through hole, a second magnetic gap is formed between the extension wall, the bottom plate and the second magnetic steel, and the second voice coil Inserted in the second magnetic gap, the third magnetic steel covers the second through hole.
  • the coaxial speaker further includes a first basket and a second basket, the first basket is fixed to the pole core, the second basket is fixed to the lower surface of the bottom plate, and the The outer fixing part of the first diaphragm is fixed to the first frame, the inner fixing part of the first diaphragm is fixed to the third magnet, and the second diaphragm is fixed to the second frame .
  • the first sound-generating unit further includes an elastic support member spaced apart from the first diaphragm, and a frame connecting the first diaphragm and the elastic support member, and the elastic support members are respectively provided on
  • the frame includes legs for fixing the elastic support member, and the legs are disposed between the first basin frame and the first magnet part.
  • the outer fixing part of the elastic support part is fixed on the first basin frame, and the inner fixing part of the elastic support part is fixed on the leg.
  • the elastic support member includes a first flexible circuit board fixed with the legs and an auxiliary diaphragm fixed on the lower surface of the first flexible circuit board.
  • the second sound-generating unit further includes a second flexible circuit board fixed on the surface of the second diaphragm close to the magnetic circuit system, and the second flexible circuit board includes a circuit board sandwiched between the second diaphragm and the magnetic circuit system. a peripheral portion between the diaphragm and the second frame, and an extension portion extending from the peripheral portion in a direction close to the first diaphragm; the end of the extension portion is fixed to the bottom of the pole core surface.
  • the bottom plate and the first magnet are provided with a recessed portion to accommodate the extension, and the extension is along the side surfaces of the second basket, the bottom plate and the first magnet. extend.
  • the second basin frame is provided with a leakage channel.
  • the coaxial speaker further includes a bottom cover connected to the second diaphragm, and the bottom cover is provided with a sound outlet of the second sound-generating unit.
  • the first magnet part and the second magnet part are spaced apart to form the first magnetic gap of the first sound-generating unit, and the second magnet part forms the second magnetic gap of the second sound-generating unit through the extended wall of its yoke.
  • Magnetic gap, the first sound-emitting unit and the second sound-emitting unit share the magnetic circuit system, the structure is simple and compact, and the cost is reduced; in addition, in addition to the first sound-emitting unit emitting bass sound and the second sound-emitting unit emitting treble sound, it provides full-band sound with high-quality sound effects.
  • the second sound-emitting unit can also be used as a receiver to emit sound. In this case, the first sound-emitting unit can achieve reverse-phase silencing of the receiver's sound.
  • Figure 1 is a perspective view of the coaxial speaker of the present invention
  • Figure 2 is a perspective view of the coaxial speaker shown in Figure 1 from another perspective;
  • Figure 3 is a three-dimensional exploded view of the coaxial speaker shown in Figure 1;
  • Figure 4 is a cross-sectional view along line A-A in Figure 1;
  • FIG. 5 is a cross-sectional view along line B-B in FIG. 1 .
  • the present invention provides a coaxial speaker 100.
  • the coaxial speaker 100 includes a magnetic circuit system 1, a first sound-generating unit 2 provided on the upper side of the magnetic circuit system 1 and a first sound-generating unit 2 provided on the upper side of the magnetic circuit system 1.
  • the second sound-generating unit 3 is located on the lower side of the magnetic circuit system 1 and is coaxially arranged with the first sound-generating unit 2 .
  • the first sound-generating unit 2 includes a first diaphragm 21 and a first voice coil 22 that drives the first diaphragm 21 to vibrate and produce sound.
  • the second sound-generating unit 3 includes a second diaphragm 31 and a first voice coil 22 that drives the second diaphragm 21 to vibrate and produce sound.
  • the diaphragm 31 vibrates the second voice coil 32 that produces sound.
  • the magnetic circuit system 1 includes a bottom plate 11, and a first magnet part 12 and a second magnet part 13 fixed on the bottom plate 11.
  • the first magnet part 12 is arranged outside the second magnet part 13 and A first magnetic gap 101 is formed at a distance from the second magnet part 13 , and the first voice coil 22 is inserted in the first magnetic gap 101 .
  • the first magnet part 12 includes a magnet fixed on the bottom plate 11 The first magnet 121 and the pole core 122 fixed on the first magnet 121.
  • the bottom plate 11 is provided with a first through hole 110.
  • the second magnet part 13 includes a magnet fixed on the bottom plate 11 and An annular second magnet 131 is provided around the first through hole 110, a yoke 132 fixed on the second magnet 131, and a third magnet 133 fixed on the yoke 132.
  • the yoke 132 includes a ring portion 1321 with a second through hole 1320 sandwiched between the second magnet 131 and the third magnet 133 and located away from the inner circumferential edge of the ring portion 1321 .
  • the extension wall 1322 extends in the direction of the third magnet 133.
  • the extension wall 1322 extends from the inside of the second magnet 131 into the first through hole 110.
  • the extension wall 1322 is connected to the A second magnetic gap 102 is formed between the bottom plate 11 and the second magnet 131 , the second voice coil 32 is inserted in the second magnetic gap 102 , and the third magnet 133 covers the second pass Hole 1320.
  • the coaxial speaker 100 further includes a first basket 4 and a second basket 5.
  • the first basket 4 is fixed to the pole core 122
  • the second basket 5 is fixed to the bottom of the bottom plate 11.
  • the outer fixing part 211 of the first diaphragm 21 is fixed on the first frame 4
  • the inner fixing part 212 of the first diaphragm 21 is fixed on the third magnet 133
  • the third magnet 133 is fixed on the surface 111 .
  • the second diaphragm 31 is fixed to the second frame 5 .
  • the first sound-generating unit 2 also includes an elastic support member 23 spaced apart from the first diaphragm 21, and a frame 24 connecting the first diaphragm 21 and the elastic support member 23.
  • the elastic support member 23 are respectively arranged on two opposite short-axis sides of the coaxial speaker 100.
  • the frame 24 includes legs 241 for fixing the elastic support member 23.
  • the legs 241 are arranged on the first basin frame 4 and the Between the first magnet portions 12 , the outer fixing portion 2301 of the elastic support member 23 is fixed to the first basin frame 4 , and the inner fixation portion 2302 of the elastic support member 23 is fixed to the legs 241 .
  • the elastic support member 23 includes a first flexible circuit board 231 fixed to the legs 241 and an auxiliary diaphragm 232 fixed on the lower surface of the first flexible circuit board 231 .
  • the first voice coil 22 is electrically connected to an external power source through the first flexible circuit board 231 .
  • the second sound-generating unit 3 also includes a second flexible circuit board 33 fixed on the surface of the second diaphragm 31 close to the magnetic circuit system 1, and the second voice coil 32 passes through the second flexible circuit.
  • Board 33 is electrically connected to an external power supply.
  • the second flexible circuit board 33 includes a peripheral portion 331 sandwiched between the second diaphragm 31 and the second frame 5 , and a portion extending from the peripheral portion 331 toward the first diaphragm 21 .
  • the extension portion 332 extends in the direction, and the end 3321 of the extension portion 332 is fixed to the lower surface 1221 of the pole core 122 .
  • the bottom plate 11 and the first magnet 121 are provided with a recessed portion 1211 to accommodate the extension portion 332 .
  • the extension portion 332 extends along the second frame 5 , the bottom plate 11 and the first magnet 121 . The sides of the magnet 121 extend.
  • the second basin frame 5 is provided with a leakage channel 50 .
  • the leakage channel 50 can maintain air pressure balance inside and outside the second basket 5 .
  • the coaxial speaker 100 further includes a bottom cover 6 connected to the second diaphragm 31 , and the bottom cover 6 is provided with a sound outlet 60 of the second sound-generating unit 3 .
  • the first magnet part and the second magnet part are spaced apart to form the first magnetic gap of the first sound-generating unit, and the second magnet part forms the second magnetic gap of the second sound-generating unit through the extended wall of its yoke.
  • Magnetic gap, the first sound-emitting unit and the second sound-emitting unit share the magnetic circuit system, the structure is simple and compact, and the cost is reduced; in addition, in addition to the first sound-emitting unit emitting bass sound and the second sound-emitting unit emitting treble sound, it provides full-band sound with high-quality sound effects.
  • the second sound-emitting unit can also be used as a receiver to emit sound. At this time, the first sound-emitting unit can achieve reverse-phase silencing of the receiver's sound.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

本发明提供一种同轴扬声器，包括磁路***、设置于磁路***上下两侧的第一和第二发声单元，磁路***包括底板、固定于底板上的第一和第二磁体部，第一磁体部设置于第二磁体部的外侧，两者间隔形成第一发声单元的磁间隙，底板设有第一通孔，第二磁体部包括环形的第二磁钢、固定于第二磁钢上的磁轭和固定于磁轭上的第三磁钢，磁轭包括夹设于第二和第三磁钢之间的具有第二通孔的环片部和自环片部的内周缘延伸的延伸壁，延伸壁从第二磁钢的内部穿过延伸至第一通孔内，延伸壁与底板以及第二磁钢之间形成第二发声单元的磁间隙，第三磁钢覆盖第二通孔。本发明的同轴扬声器结构简单紧凑、降低成本，并且还能用作具有反相位消音的受话器。

Description

一种同轴扬声器
【 技术领域】
本发明涉及电声转换领域，尤其涉及一种同轴扬声器。
【 背景技术】
同轴扬声器是指同时具有高音发声单元和低音发声单元，且高音发声单元和低音发声单元同轴设置的扬声器。同轴扬声器的高音发声单元和低音发声单元可以一同位于同轴扬声器的正面，也可以分别位于同轴扬声器的正反面。
相关技术的同轴扬声器，高音发声单元和低音发声单元各自具有独立分开的磁路***，独立分开的磁路***导致了产品整体结构复杂、堆叠高度过高、磁路***成本居高不下等诸多问题。
因此，实有必要提供一种新的同轴扬声器解决上述技术问题。
【 发明内容】
本发明的目的是克服上述技术问题，提供一种共用磁路***的同轴扬声器，该同轴扬声器结构简单紧凑、降低成本，并且还能用作具有反相位消音的受话器。
为了实现上述目的，本发明提供一种同轴扬声器，其包括磁路***、设置于所述磁路***上侧的第一发声单元和设置于所述磁路***下侧的且与所述第一发声单元同轴设置的第二发声单元，所述第一发声单元包括第一振膜和驱动所述第一振膜振动发声的第一音圈，所述第二发声单元包括第二振膜和驱动所述第二振膜振动发声的第二音圈，所述磁路***包括底板、以及固定于所述底板上的第一磁体部和第二磁体部，所述第一磁体部设置于所述第二磁体部的外侧并与所述第二磁体部间隔形成第一磁间隙，所述第一音圈插设于所述第一磁间隙，所述第一磁体部包括固定于所述底板上的第一磁钢和固定于所述第一磁钢上的极芯，所述底板设有第一通孔，所述第二磁体部包括固定于所述底板上的且环绕所述第一通孔设置的环形的第二磁钢、固定于所述第二磁钢上的磁轭和固定于所述磁轭上的第三磁钢，所述磁轭包括夹设于所述第二磁钢和所述第三磁钢之间的具有第二通孔的环片部和自所述环片部的内周缘向远离所述第三磁钢的方向延伸的延伸壁，所述延伸壁从所述第二磁钢的内部穿过延伸至所述第一通孔内，所述延伸壁与所述底板以及所述第二磁钢之间形成第二磁间隙，所述第二音圈插设于所述第二磁间隙，所述第三磁钢覆盖所述第二通孔。
优选的，所述同轴扬声器还包括第一盆架和第二盆架，所述第一盆架固定于所述极芯，所述第二盆架固定于所述底板的下表面，所述第一振膜的外固定部固定于所述第一盆架，所述第一振膜的内固定部固定于所述第三磁钢，所述第二振膜固定于所述第二盆架。
优选的，所述第一发声单元还包括与所述第一振膜间隔设置的弹性支撑件、以及连接所述第一振膜和所述弹性支撑件的骨架，所述弹性支撑件分别设置于所述同轴扬声器的两个相对的短轴边，所述骨架包括固定所述弹性支撑件的支脚，所述支脚设置于所述第一盆架和所述第一磁体部之间，所述弹性支撑件的外固定部固定于所述第一盆架，所述弹性支撑件的内固定部固定于所述支脚。
优选的，所述弹性支撑件包括与所述支脚固定的第一柔性电路板和固定于所述第一柔性电路板下表面上的辅助振膜。
优选的，所述第二发声单元还包括固定于所述第二振膜靠近所述磁路***的表面上的第二柔性电路板，所述第二柔性电路板包括夹设于所述第二振膜和所述第二盆架之间的周缘部、以及自所述周缘部向靠近所述第一振膜的方向延伸的延伸部，所述延伸部的末端固定于所述极芯的下表面。
优选的，所述底板和所述第一磁钢设有让位所述延伸部的凹陷部，所述延伸部沿着所述第二盆架、所述底板和所述第一磁钢的侧面延伸。
优选的，所述第二盆架设有泄漏通道。
优选的，所述同轴扬声器还包括盖接于所述第二振膜上的底盖，所述底盖设有所述第二发声单元的出声孔。
本发明的同轴扬声器，其中第一磁体部和第二磁体部间隔形成了第一发声单元的第一磁间隙，第二磁体部通过其磁轭的延伸壁形成了第二发声单元的第二磁间隙，第一发声单元和第二发声单元共用磁路***，结构简单紧凑、降低成本；此外，除了第一发声单元低音发声，第二发声单元高音发声，提供高品质音效的全频带发声外，第二发声单元还可以用作受话器发声，此时第一发声单元可以实现受话器发声的反相位消音。
【 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，对于本发明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为本发明的同轴扬声器的立体图；
图2为图1所示同轴扬声器另一视角的立体图；
图3为图1所示同轴扬声器的立体分解图；
图4为沿图1中A-A线的剖面视图；
图5为沿图1中B-B线的剖面视图。
【具体实施方式】
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，本发明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。
请参阅图1-5所示，本发明提供一种同轴扬声器100，所述同轴扬声器100包括磁路***1、设置于所述磁路***1上侧的第一发声单元2和设置于所述磁路***1下侧的且与所述第一发声单元2同轴设置的第二发声单元3。
所述第一发声单元2包括第一振膜21和驱动所述第一振膜21振动发声的第一音圈22，所述第二发声单元3包括第二振膜31和驱动所述第二振膜31振动发声的第二音圈32。
所述磁路***1包括底板11、以及固定于所述底板11上的第一磁体部12和第二磁体部13，所述第一磁体部12设置于所述第二磁体部13的外侧并与所述第二磁体部13间隔形成第一磁间隙101，所述第一音圈22插设于所述第一磁间隙101，所述第一磁体部12包括固定于所述底板11上的第一磁钢121和固定于所述第一磁钢121上的极芯122，所述底板11设有第一通孔110，所述第二磁体部13包括固定于所述底板11上的且环绕所述第一通孔110设置的环形的第二磁钢131、固定于所述第二磁钢131上的磁轭132和固定于所述磁轭132上的第三磁钢133，所述磁轭132包括夹设于所述第二磁钢131和所述第三磁钢133之间的具有第二通孔1320的环片部1321和自所述环片部1321的内周缘向远离所述第三磁钢133的方向延伸的延伸壁1322，所述延伸壁1322从所述第二磁钢131的内部穿过延伸至所述第一通孔110内，所述延伸壁1322与所述底板11以及所述第二磁钢131之间形成第二磁间隙102，所述第二音圈32插设于所述第二磁间隙102，所述第三磁钢133覆盖所述第二通孔1320。
所述同轴扬声器100还包括第一盆架4和第二盆架5，所述第一盆架4固定于所述极芯122，所述第二盆架5固定于所述底板11的下表面111，所述第一振膜21的外固定部211固定于所述第一盆架4，所述第一振膜21的内固定部212固定于所述第三磁钢133，所述第二振膜31固定于所述第二盆架5。
所述第一发声单元2还包括与所述第一振膜21间隔设置的弹性支撑件23、以及连接所述第一振膜21和所述弹性支撑件23的骨架24，所述弹性支撑件23分别设置于所述同轴扬声器100的两个相对的短轴边，所述骨架24包括固定所述弹性支撑件23的支脚241，所述支脚241设置于所述第一盆架4和所述第一磁体部12之间，所述弹性支撑件23的外固定部2301固定于所述第一盆架4，所述弹性支撑件23的内固定部2302固定于所述支脚241。所述弹性支撑件23包括与所述支脚241固定的第一柔性电路板231和固定于所述第一柔性电路板231下表面上的辅助振膜232。所述第一音圈22通过所述第一柔性电路板231与外部电源电连接。
所述第二发声单元3还包括固定于所述第二振膜31靠近所述磁路***1的表面上的第二柔性电路板33，所述第二音圈32通过所述第二柔性电路板33与外部电源电连接。
所述第二柔性电路板33包括夹设于所述第二振膜31和所述第二盆架5之间的周缘部331、以及自所述周缘部331向靠近所述第一振膜21的方向延伸的延伸部332，所述延伸部332的末端3321固定于所述极芯122的下表面1221。所述底板11和所述第一磁钢121设有让位所述延伸部332的凹陷部1211，所述延伸部332沿着所述第二盆架5、所述底板11和所述第一磁钢121的侧面延伸。
所述第二盆架5设有泄漏通道50。所述泄漏通道50可以保持所述第二盆架5内外侧的气压平衡。
所述同轴扬声器100还包括盖接于所述第二振膜31上的底盖6，所述底盖6设有所述第二发声单元3的出声孔60。
本发明的同轴扬声器，其中第一磁体部和第二磁体部间隔形成了第一发声单元的第一磁间隙，第二磁体部通过其磁轭的延伸壁形成了第二发声单元的第二磁间隙，第一发声单元和第二发声单元共用磁路***，结构简单紧凑、降低成本；此外，除了第一发声单元低音发声，第二发声单元高音发声，提供高品质音效的全频带发声外，第二发声单元还可以用作受话器发声，此时第一发声单元可以实现受话器发声的反相位消音。
以上所述的仅是本发明的实施方式，在此应当指出，对于本发明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. 一种同轴扬声器，其包括磁路***、设置于所述磁路***上侧的第一发声单元和设置于所述磁路***下侧的且与所述第一发声单元同轴设置的第二发声单元，所述第一发声单元包括第一振膜和驱动所述第一振膜振动发声的第一音圈，所述第二发声单元包括第二振膜和驱动所述第二振膜振动发声的第二音圈，其特征在于，所述磁路***包括底板、以及固定于所述底板上的第一磁体部和第二磁体部，所述第一磁体部设置于所述第二磁体部的外侧并与所述第二磁体部间隔形成第一磁间隙，所述第一音圈插设于所述第一磁间隙，所述第一磁体部包括固定于所述底板上的第一磁钢和固定于所述第一磁钢上的极芯，所述底板设有第一通孔，所述第二磁体部包括固定于所述底板上的且环绕所述第一通孔设置的环形的第二磁钢、固定于所述第二磁钢上的磁轭和固定于所述磁轭上的第三磁钢，所述磁轭包括夹设于所述第二磁钢和所述第三磁钢之间的具有第二通孔的环片部和自所述环片部的内周缘向远离所述第三磁钢的方向延伸的延伸壁，所述延伸壁从所述第二磁钢的内部穿过延伸至所述第一通孔内，所述延伸壁与所述底板以及所述第二磁钢之间形成第二磁间隙，所述第二音圈插设于所述第二磁间隙，所述第三磁钢覆盖所述第二通孔。
  2. 根据权利要求1所述的同轴扬声器，其特征在于，所述同轴扬声器还包括第一盆架和第二盆架，所述第一盆架固定于所述极芯，所述第二盆架固定于所述底板的下表面，所述第一振膜的外固定部固定于所述第一盆架，所述第一振膜的内固定部固定于所述第三磁钢，所述第二振膜固定于所述第二盆架。
  3. 根据权利要求2所述的同轴扬声器，其特征在于，所述第一发声单元还包括与所述第一振膜间隔设置的弹性支撑件、以及连接所述第一振膜和所述弹性支撑件的骨架，所述弹性支撑件分别设置于所述同轴扬声器的两个相对的短轴边，所述骨架包括固定所述弹性支撑件的支脚，所述支脚设置于所述第一盆架和所述第一磁体部之间，所述弹性支撑件的外固定部固定于所述第一盆架，所述弹性支撑件的内固定部固定于所述支脚。
  4. 根据权利要求3所述的同轴扬声器，其特征在于，所述弹性支撑件包括与所述支脚固定的第一柔性电路板和固定于所述第一柔性电路板下表面上的辅助振膜。
  5. 根据权利要求2所述的同轴扬声器，其特征在于，所述第二发声单元还包括固定于所述第二振膜靠近所述磁路***的表面上的第二柔性电路板，所述第二柔性电路板包括夹设于所述第二振膜和所述第二盆架之间的周缘部、以及自所述周缘部向靠近所述第一振膜的方向延伸的延伸部，所述延伸部的末端固定于所述极芯的下表面。
  6. 根据权利要求5所述的同轴扬声器，其特征在于，所述底板和所述第一磁钢设有让位所述延伸部的凹陷部，所述延伸部沿着所述第二盆架、所述底板和所述第一磁钢的侧面延伸。
  7. 根据权利要求2所述的同轴扬声器，其特征在于，所述第二盆架设有泄漏通道。
  8. 根据权利要求2所述的同轴扬声器，其特征在于，所述同轴扬声器还包括盖接于所述第二振膜上的底盖，所述底盖设有所述第二发声单元的出声孔。
PCT/CN2022/125117 2022-08-30 2022-10-13 一种同轴扬声器 WO2024045279A1 (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004260662A (ja) * 2003-02-27 2004-09-16 Foster Electric Co Ltd コアキシャル型複合スピーカ
CN113194390A (zh) * 2021-04-23 2021-07-30 歌尔股份有限公司 发声装置
CN216960175U (zh) * 2022-01-25 2022-07-12 瑞声光电科技(常州)有限公司 一种同轴扬声器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004260662A (ja) * 2003-02-27 2004-09-16 Foster Electric Co Ltd コアキシャル型複合スピーカ
CN113194390A (zh) * 2021-04-23 2021-07-30 歌尔股份有限公司 发声装置
CN216960175U (zh) * 2022-01-25 2022-07-12 瑞声光电科技(常州)有限公司 一种同轴扬声器

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