WO2024031826A1 - 扬声器 - Google Patents

扬声器 Download PDF

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Publication number
WO2024031826A1
WO2024031826A1 PCT/CN2022/125111 CN2022125111W WO2024031826A1 WO 2024031826 A1 WO2024031826 A1 WO 2024031826A1 CN 2022125111 W CN2022125111 W CN 2022125111W WO 2024031826 A1 WO2024031826 A1 WO 2024031826A1
Authority
WO
WIPO (PCT)
Prior art keywords
dome
speaker according
diaphragm
magnetic circuit
fixedly connected
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2022/125111
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English (en)
French (fr)
Inventor
童迪江
廖焕彬
郑亚健
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 Microtech Changzhou Co Ltd
Original Assignee
AAC Microtech Changzhou Co Ltd
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 AAC Microtech Changzhou Co Ltd filed Critical AAC Microtech Changzhou Co Ltd
Priority to JP2022575869A priority Critical patent/JP7601910B2/ja
Priority to US18/090,443 priority patent/US12335705B2/en
Publication of WO2024031826A1 publication Critical patent/WO2024031826A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/26—Damping by means acting directly on free portion of diaphragm or cone
    • 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 present invention relates to the field of electroacoustic conversion, and in particular to a loudspeaker.
  • Speakers also known as loudspeakers, are used in speakers to convert audio signals into sound for playback.
  • Speakers in the related art usually include a basin frame and a vibration system and a magnetic circuit system fixed on the basin frame.
  • the vibration system includes a diaphragm and a voice coil that drives the diaphragm to vibrate and produce sound.
  • the diaphragm includes a ball top and a ring part. , there is only one ball top, and it is made of a single material. It is difficult for the ball top of this structure to meet the requirements for thickness, stiffness, molding, heat dissipation, and high-frequency performance at the same time.
  • the purpose of the present invention is to overcome the above technical problems and provide a speaker with improved high-frequency performance.
  • the present invention provides a speaker, which includes a basin frame and a vibration system and a magnetic circuit system fixed on the basin frame.
  • the vibration system includes a diaphragm and a sound driver that drives the diaphragm to vibrate and produce sound.
  • the diaphragm includes a spherical top and a ring portion surrounding the spherical top.
  • the spherical top includes a first metal dome provided with a through hole and a second dome covering the through hole.
  • the third dome covers the through hole.
  • a metal dome is located between the ring part and the second dome and is fixedly connected to the ring part and the second dome respectively.
  • the first metal dome includes a main body, a first fixing part connected to the second dome, and a second fixing part connected to the ring part, and the main part is located on the first fixing part.
  • the second fixing part, the second dome includes a body part and a groove recessed from the outer edge of the body part toward the direction of the magnetic circuit system, and the body part is placed in the through hole, The lower surface of the first fixing part is fixedly connected to the groove.
  • the upper surface of the first fixing part and the upper surface of the body part are located in the same plane.
  • the folded ring portion includes an arcuate portion, a first connecting portion extending inwardly from one end of the arcuate portion, and a second connecting portion extending outwardly from the other end of the arcuate portion
  • said second fixing part includes a connecting arm bent and extended from the main body part toward the direction of the magnetic circuit system and a support arm bent and extended outward from the connecting arm.
  • the lower surface of the first connecting part is connected to the lower surface of the first connecting part.
  • the support arm is fixedly connected.
  • the arc-shaped portion extends concavely toward the direction of the magnetic circuit system.
  • the voice coil is fixedly connected to the lower surface of the main body.
  • the magnetic circuit system includes a bottom plate fixed to the basin frame, main magnetic steel and auxiliary magnetic steel fixed to the bottom plate and arranged at intervals, a main pole core attached to the main magnetic steel and The secondary pole core is attached to the secondary magnet steel.
  • the secondary pole core is provided with a fixing post that bends and extends toward the folding ring portion.
  • the second connecting portion of the turning portion is fixed to the fixing post of the secondary pole core. connect.
  • the secondary pole core is further provided with a relief portion that is concave in a direction away from the diaphragm, and the projection of the arcuate portion along the vibration direction of the diaphragm is at least partially located in the relief portion.
  • the first metal dome is an aluminum dome.
  • the second dome is an aluminum dome or a composite dome including an aluminum foil layer and a carbon fiber layer.
  • the ball top of the present invention is formed by connecting the first metal dome and the second dome, which not only facilitates the molding and processing of the ball top, but also improves the strength and high-frequency performance of the speaker.
  • the second dome is placed in the through hole of the first metal dome, which can save the space of the speaker and does not increase the height of the speaker by disposing two domes.
  • Figure 1 is a perspective view of the speaker of the present invention
  • Figure 2 is an exploded perspective view of the speaker of the present invention
  • Figure 3 is a cross-sectional view along line A-A in Figure 1;
  • Figure 4 is a partial enlarged view of area B in Figure 3.
  • the present invention provides a speaker 100 , which includes a basin frame 10 , a vibration system 20 and a magnetic circuit system 30 fixed on the basin frame 10 .
  • the vibration system 20 includes a diaphragm 21 and a voice coil 22 that drives the diaphragm 21 to vibrate and produce sound.
  • the diaphragm 21 includes a spherical top 210 and a ring portion 201 surrounding the spherical top 210.
  • the spherical top 210 includes a first metal dome 211 provided with a through hole 2113 and a second metal dome 211 covering the through hole 2113. Dome 212, the first metal dome 211 is located between the ring part 201 and the second dome 212 and is fixedly connected to the ring part 201 and the second dome 212 respectively.
  • the first metal dome 211 may be an aluminum dome or other metal dome, which is easy to process and is light and thin; the second dome 212 may be an aluminum dome or a composite dome including an aluminum foil layer and a carbon fiber layer, consisting of This can improve the stiffness of the second dome 212 and improve the high-frequency performance of the speaker 100.
  • the second composite dome can also be formed of other materials.
  • the first metal dome 211 includes a main body part 2110, a first fixing part 2111 connected to the second dome 212, and a second fixing part 2112 connected to the ring part 201.
  • the main body part 2110 Located between the first fixing part 2111 and the second fixing part 2112, the second dome 212 includes a body part 2121 and a groove recessed from the outer edge of the body part 2121 toward the direction 30 of the magnetic circuit system. 2122, the body part 2121 is placed in the through hole 2113, and the lower surface of the first fixing part 2111 is fixedly connected to the groove 2122.
  • the upper surface of the first fixing part 2111 and the upper surface of the body part 2121 are located in the same plane, that is, the dome 210 is formed by a combination of the second dome 212 and the first metal dome 211, but no additional
  • the height of the speaker 100 makes full use of the internal space of the speaker 100 and increases the strength of the ball top 210 .
  • the ring portion 201 includes an arc portion 2010, a first connecting portion 2011 extending inward from one end of the arc portion 2010, and a second connecting portion extending outward from the other end of the arc portion 2010.
  • the second fixing part 2112 includes a connecting arm 21120 bent and extended from the main body part 2110 toward the magnetic circuit system direction 30 and a support arm 21121 bent and extended outward from the connecting arm 21120.
  • the first connecting part The lower surface of 2011 is fixedly connected to the support arm 21121.
  • the arc portion 2010 extends concavely toward the magnetic circuit system direction 30 to facilitate reducing the overall height of the speaker 100 .
  • the arcuate portion 2010 may also protrude in a direction away from the magnetic circuit system 30 .
  • the voice coil 22 is fixedly connected to the lower surface of the main body 2110 of the first metal dome 211 .
  • the voice coil 22 is close to the metal dome, which can facilitate the heat dissipation of the voice coil 22 .
  • the magnetic circuit system 30 includes a bottom plate 31 fixed to the basin frame 10 , main magnets 321 and auxiliary magnets 322 fixed on the bottom plate 31 and arranged at intervals, and a main pole attached to the main magnet 321 .
  • the core 331 and the secondary pole core 332 attached to the secondary magnetic steel 322.
  • the secondary pole core 332 is provided with a fixing post 3320 that is bent and extended toward the folding ring portion 201 .
  • the second connecting portion 2012 of the folding ring portion 201 is fixedly connected to the fixing post 3320 of the secondary pole core 332 .
  • the ring portion 201 is also provided with an extension portion 2013 that bends and extends from the second connection portion 2012 toward the magnetic circuit system 30.
  • the extension portion 2013 is fixedly connected to the outer surface of the fixing post 3320, thereby increasing the The connection area between the folding ring portion 201 and the fixing column 3320 is enlarged, and the fixing strength of the folding ring portion 201 and the fixing column 3320 is improved.
  • the secondary pole core 332 is also provided with a relief portion 3321 that is concave in a direction away from the diaphragm 21 .
  • the projection of the arcuate portion 2010 along the vibration direction of the diaphragm 21 is at least partially located in the relief portion 3321 .
  • the relief portion 3321 A vibration space can be provided for the arc portion 2010 .
  • the ball top 210 of the present invention is connected by the first metal dome 211 and the second dome 212, which not only facilitates the molding and processing of the ball top, but also improves the strength and high-frequency performance of the speaker.
  • the second dome 212 is placed in the through hole 2113 of the first metal dome 211, which can save the space of the speaker 100 and does not increase the height of the speaker 100 by disposing two domes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

本发明提供了扬声器，其包括盆架以及固定于所述盆架上的振动系统和磁路系统，所述振动系统包括振膜和驱动所述振膜振动发声的音圈，所述振膜包括球顶部和环绕所述球顶部的折环部，所述球顶部包括设有通孔的第一金属球顶和覆盖所述通孔的第二球顶，所述第一金属球顶位于所述折环部和第二球顶之间并且分别与所述折环部和第二球顶固定连接。本发明的扬声器可提高其高频性能。

Description

扬声器
【 技术领域】
本发明涉及电声转换领域，尤其涉及一种扬声器。
【 背景技术】
扬声器又名喇叭，运用于音箱中实现将音频信号转化为声音播放。
相关技术的扬声器通常包括盆架以及固定于盆架上的振动系统和磁路系统，其中，振动系统包括振膜和驱动振膜振动发声的音圈，所述振膜包括球顶部和折环部，所述球顶部只有一个，并且由单一材料制成，此种结构的球顶部对于厚度，刚度，成型，散热，高频性能都很难同时满足需求。
因此，实有必要提供一种新的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，提供一种提高高频性能的扬声器。
为了实现上述目的，本发明提供了一种扬声器，其包括盆架以及固定于所述盆架上的振动系统和磁路系统，所述振动系统包括振膜和驱动所述振膜振动发声的音圈，所述振膜包括球顶部和环绕所述球顶部的折环部，所述球顶部包括设有通孔的第一金属球顶和覆盖所述通孔的第二球顶，所述第一金属球顶位于所述折环部和第二球顶之间并且分别与所述折环部和第二球顶固定连接。
优选的，所述第一金属球顶包括主体部、连接所述第二球顶的第一固定部以及连接所述折环部的第二固定部，所述主体部位于所述第一固定部和第二固定部之间，所述第二球顶包括本体部以及自所述本体部的外边缘向所述磁路系统方向凹陷的凹槽，所述本体部置于所述通孔中，所述第一固定部的下表面与所述凹槽固定连接。
优选的，所述第一固定部的上表面和本体部的上表面位于同一平面内。
优选的，所述折环部包括弧形部、自所述弧形部的一端向内部延伸的第一连接部以及自所述弧形部的另一端向外部延伸的第二连接部，所述第二固定部包括自所述主体部向所述磁路系统方向弯折延伸的连接臂和自所述连接臂向外部弯折延伸的支撑臂，所述第一连接部的下表面与所述支撑臂固定连接。
优选的，所述弧形部向所述磁路系统方向凹陷延伸。
优选的，所述音圈与主体部的下表面固定连接。
优选的，所述磁路系统包括与所述盆架固定的底板、固定于所述底板上且间隔设置的主磁钢和副磁钢、贴附于所述主磁钢上的主极芯以及贴附于所述副磁钢上的副极芯，所述副极芯设有向所述折环部弯折延伸的固定柱，折环部的第二连接部与副极芯的固定柱固定连接。
优选的，所述副极芯还设有向远离所述振膜方向凹陷的让位部，所述弧形部沿所述振膜振动方向的投影至少部分位于所述让位部。
优选的，所述第一金属球顶为铝球顶。
优选的，第二球顶为铝球顶或包括铝箔层和碳纤维层的复合球顶。
本发明的球顶部由第一金属球顶和第二球顶连接而成，不仅使得球顶部便于成型加工，还可以提高扬声器的强度及高频性能。另外，第二球顶置于第一金属球顶的通孔中，可节省扬声器的空间，不因设置两个球顶而增加扬声器的高度。
【 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为本发明的扬声器的立体图；
图2为本发明的扬声器的立体分解图；
图3为沿图1中A-A线的剖面视图；
图4为图3区域B的局部放大图。
【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1-4所示，本发明提供一种扬声器100，其包括盆架10、固定于所述盆架10上的振动系统20和磁路系统30。
所述振动系统20包括振膜21和驱动所述振膜21振动发声的音圈22。所述振膜21包括球顶部210和环绕所述球顶部210的折环部201，所述球顶部210包括设有通孔2113的第一金属球顶211和覆盖所述通孔2113的第二球顶212，所述第一金属球顶211位于所述折环部201和第二球顶212之间并且分别与所述折环部201和第二球顶212固定连接。其中，第一金属球顶211可以为铝球顶或其它金属球顶，便于加工并且轻薄；所述第二球顶212可以包括为铝球顶或包括铝箔层和碳纤维层的复合球顶，由此可以提高第二球顶212的刚度，可提升扬声器100的高频性能，在其它实施方式中，第二复合球顶也可由其它材料复合形成。
具体的，所述第一金属球顶211包括主体部2110、连接所述第二球顶212的第一固定部2111以及连接所述折环部201的第二固定部2112，所述主体部2110位于所述第一固定部2111和第二固定部2112之间，所述第二球顶212包括本体部2121以及自所述本体部2121的外边缘向所述磁路系统方向30凹陷的凹槽2122，所述本体部2121置于所述通孔2113中，所述第一固定部2111的下表面与所述凹槽2122固定连接。在本实施方式中，第一固定部2111的上表面和本体部2121的上表面位于同一平面内，即球顶部210由第二球顶212和第一金属球顶211组合形成，但并未增加扬声器100的高度，充分利用了扬声器100的内部空间并起到提升球顶部210强度的作用。
另外，所述折环部201包括弧形部2010、自所述弧形部2010的一端向内部延伸的第一连接部2011以及自所述弧形部2010的另一端向外部延伸的第二连接部2012。第二固定部2112包括自所述主体部2110向所述磁路系统方向30弯折延伸的连接臂21120和自所述连接臂21120向外部弯折延伸的支撑臂21121，所述第一连接部2011的下表面与所述支撑臂21121固定连接。弧形部2010向磁路系统方向30凹陷延伸，便于降低扬声器100的整体高度。在其它实施方式中，弧形部2010也可以向远离磁路系统30方向凸伸。
进一步的，所述音圈22与第一金属球顶211的主体部2110的下表面固定连接，音圈22靠近金属材质的球顶，可便于音圈22的散热。
所述磁路系统30包括与盆架10固定的底板31、固定于所述底板31上且间隔设置的主磁钢321和副磁钢322、贴附于所述主磁钢321上的主极芯331和贴附于所述副磁钢322上的副极芯332。所述副极芯332设有向折环部201弯折延伸的固定柱3320，折环部201的第二连接部2012与副极芯332的固定柱3320固定连接。所述折环部201还设有自所述第二连接部2012向磁路系统30弯折延伸的延伸部2013，所述延伸部2013固定连接于所述固定柱3320的外表面，由此增大了折环部201与固定柱3320的连接面积，提高了折环部201与固定柱3320的固定强度。另外，所述副极芯332还设有向远离振膜21方向凹陷的让位部3321，所述弧形部2010沿振膜21振动方向的投影至少部分位于让位部3321，让位部3321可为弧形部2010提供振动空间。
本发明的球顶部210由第一金属球顶211和第二球顶212连接而成，不仅使得球顶部便于成型加工，还可以提高扬声器的强度及高频性能。另外，第二球顶212置于第一金属球顶211的通孔2113中，可节省扬声器100的空间，不因设置两个球顶而增加扬声器100的高度。
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 (10)

  1. 一种扬声器，其包括盆架以及固定于所述盆架上的振动系统和磁路系统，所述振动系统包括振膜和驱动所述振膜振动发声的音圈，所述振膜包括球顶部和环绕所述球顶部的折环部，其特征在于，所述球顶部包括设有通孔的第一金属球顶和覆盖所述通孔的第二球顶，所述第一金属球顶位于所述折环部和第二球顶之间并且分别与所述折环部和第二球顶固定连接。
  2. 根据权利要求1所述的扬声器，其特征在于，所述第一金属球顶包括主体部、连接所述第二球顶的第一固定部以及连接所述折环部的第二固定部，所述主体部位于所述第一固定部和第二固定部之间，所述第二球顶包括本体部以及自所述本体部的外边缘向所述磁路系统方向凹陷的凹槽，所述本体部置于所述通孔中，所述第一固定部的下表面与所述凹槽固定连接。
  3. 根据权利要求2所述的扬声器，其特征在于，所述第一固定部的上表面和本体部的上表面位于同一平面内。
  4. 根据权利要求2所述的扬声器，其特征在于，所述折环部包括弧形部、自所述弧形部的一端向内部延伸的第一连接部以及自所述弧形部的另一端向外部延伸的第二连接部，所述第二固定部包括自所述主体部向所述磁路系统方向弯折延伸的连接臂和自所述连接臂向外部弯折延伸的支撑臂，所述第一连接部的下表面与所述支撑臂固定连接。
  5. 根据权利要求4所述的扬声器，其特征在于，所述弧形部向所述磁路系统方向凹陷延伸。
  6. 根据权利要求4所述的扬声器，其特征在于，所述音圈与主体部的下表面固定连接。
  7. 根据权利要求4所述的扬声器，其特征在于，所述磁路系统包括与所述盆架固定的底板、固定于所述底板上且间隔设置的主磁钢和副磁钢、贴附于所述主磁钢上的主极芯以及贴附于所述副磁钢上的副极芯，所述副极芯设有向所述折环部弯折延伸的固定柱，折环部的第二连接部与副极芯的固定柱固定连接。
  8. 根据权利要求7所述的扬声器，其特征在于，所述副极芯还设有向远离所述振膜方向凹陷的让位部，所述弧形部沿所述振膜振动方向的投影至少部分位于所述让位部。
  9. 根据权利要求1所述的扬声器，其特征在于，所述第一金属球顶为铝球顶。
  10. 根据权利要求1所述的扬声器，其特征在于，第二球顶为铝球顶或包括铝箔层和碳纤维层的复合球顶。
PCT/CN2022/125111 2022-08-12 2022-10-13 扬声器 Ceased WO2024031826A1 (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201611945U (zh) * 2009-12-07 2010-10-20 瑞声声学科技(深圳)有限公司 电磁扬声器
WO2016086756A1 (zh) * 2014-12-02 2016-06-09 歌尔声学股份有限公司 微型扬声器
CN207531068U (zh) * 2017-11-02 2018-06-22 瑞声科技(新加坡)有限公司 扬声器箱
CN209390306U (zh) * 2018-12-30 2019-09-13 瑞声科技(新加坡)有限公司 扬声器
CN214101770U (zh) * 2020-12-25 2021-08-31 瑞声光电科技(常州)有限公司 发声器件

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201611945U (zh) * 2009-12-07 2010-10-20 瑞声声学科技(深圳)有限公司 电磁扬声器
WO2016086756A1 (zh) * 2014-12-02 2016-06-09 歌尔声学股份有限公司 微型扬声器
CN207531068U (zh) * 2017-11-02 2018-06-22 瑞声科技(新加坡)有限公司 扬声器箱
CN209390306U (zh) * 2018-12-30 2019-09-13 瑞声科技(新加坡)有限公司 扬声器
CN214101770U (zh) * 2020-12-25 2021-08-31 瑞声光电科技(常州)有限公司 发声器件

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