WO2024036714A1 - 发声器件 - Google Patents

发声器件 Download PDF

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Publication number
WO2024036714A1
WO2024036714A1 PCT/CN2022/122681 CN2022122681W WO2024036714A1 WO 2024036714 A1 WO2024036714 A1 WO 2024036714A1 CN 2022122681 W CN2022122681 W CN 2022122681W WO 2024036714 A1 WO2024036714 A1 WO 2024036714A1
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WO
WIPO (PCT)
Prior art keywords
voice coil
sound
fixed
diaphragm
magnetic circuit
Prior art date
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Ceased
Application number
PCT/CN2022/122681
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English (en)
French (fr)
Inventor
时阳
令狐荣林
周家盛
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AAC Microtech Changzhou Co Ltd
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AAC Microtech Changzhou Co Ltd
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Priority to JP2022575680A priority Critical patent/JP7635266B2/ja
Priority to US18/086,694 priority patent/US20240064466A1/en
Publication of WO2024036714A1 publication Critical patent/WO2024036714A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • 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
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the present invention relates to the field of electroacoustic conversion, and in particular to a sound-generating device.
  • sound-generating devices are mainly used to transmit electrical signals into sound signals and can also be used in headphones.
  • the sound-generating device of the related art includes a basin frame, a vibration system fixed on the basin frame, and a magnetic circuit system with a magnetic gap.
  • the vibration system includes a diaphragm fixed on the basin frame for vibrating sound, and is inserted into the basin frame.
  • the magnetic gap drives the voice coil to vibrate the diaphragm.
  • the voice coil requires a skeleton for support.
  • the fixed structure of the skeleton prevents the position of the voice coil in the magnetic gap from being adjusted relative to the magnetic circuit system.
  • This design is not conducive to the BL of the voice coil in the magnetic field. It is maximized in the circuit system and affects the sound effect of the sound-generating device.
  • the object of the present invention is to provide a sound-generating device that can adjust the position of the voice coil to achieve the largest voice coil BL.
  • the present invention provides a sound-generating device, which includes a basin frame, a vibration system respectively fixed on the basin frame, and a magnetic circuit system that drives the vibration system to vibrate and produce sound.
  • the magnetic circuit system has a main magnet.
  • the magnetic gap formed by the steel and the auxiliary magnetic steel being spaced apart;
  • the vibration system includes a diaphragm fixed to the basin frame and a voice coil at least partially inserted in the magnetic gap to drive the diaphragm to vibrate and produce sound, and its characteristics
  • the voice coil includes a first voice coil and a second voice coil, both of which are annular.
  • One end of the first voice coil is fixed to a side of the diaphragm close to the magnetic circuit system, and the second voice coil The coil is fixed on one end of the first voice coil close to the magnetic circuit system, and the first voice coil and the second voice coil are insulated from each other.
  • the first voice coil and the second voice coil are integrally wound and formed.
  • the second voice coil continues to be coaxially wound after the winding end point of the first voice coil.
  • the projection of the second voice coil on a plane parallel to the vibration direction of the diaphragm is covered by the projection of the main magnet on a plane parallel to the vibration direction of the diaphragm.
  • the thickness of the first voice coil is smaller than the thickness of the second voice coil.
  • the diaphragm includes an annular fixing part fixed to the basin frame, a folding ring part fixed to the inner circumference of the fixing part, and a spherical top fixed to the inner circumference of the folding part,
  • the first voice coil is fixed on the side of the dome facing the magnetic circuit system.
  • the sound-generating device further includes a breathable isolator
  • the magnetic circuit system further includes a magnetic yoke
  • the main magnetic steel and the secondary magnetic steel are fixed to the magnetic yoke
  • the magnetic yoke is provided with air-permeable isolators opposite to each other. hole
  • the breathable isolation member covers the breathable hole.
  • the voice coil in the sound-generating device of the present invention includes a first voice coil and a second voice coil, both of which are annular.
  • One end of the first voice coil is fixed to the diaphragm and is close to the magnetic circuit system.
  • the second voice coil is fixed to one end of the first voice coil close to the magnetic circuit system, and the first voice coil and the second voice coil are insulated from each other; by using the first voice coil as
  • the support design of the second voice coil replaces the conventional voice coil skeleton structure, so that the position of the second voice coil in the magnetic gap along the vibration direction of the diaphragm can be adjusted flexibly by adjusting the number of turns of the first voice coil, so that the second voice coil can be flexibly adjusted.
  • the two-stage voice coil maximizes BL in the magnetic circuit, effectively improving the acoustic performance.
  • Figure 1 is a schematic three-dimensional structural diagram of the sound-generating device of the present invention.
  • Figure 2 is an exploded view of the sound-generating device of the present invention
  • Figure 3 is a cross-sectional view along line A-A in Figure 1;
  • Figure 4 is a schematic structural diagram of the voice coil of the present invention.
  • 100. Sound-generating device 1. Basin frame, 2. Vibration system, 21. Diaphragm, 211. Fixed part, 212. Ring part, 213. Dome, 22. Voice coil, 221. First voice coil, 222. Second voice coil, 3. Magnetic circuit system, 31. Magnetic bowl, 311. Breathing hole, 32. Main magnet, 321. First main magnet, 322. Second main magnet, 33. Secondary magnet , 331. The first pair of magnet steel, 332. The second pair of magnet steel, 333. The third pair of magnet steel, 334. The fourth pair of magnet steel, 34. Magnetic gap, 35. Magnetic conductive plate, 4. Conductive parts, 5 , pole core, 6. Breathable isolation piece.
  • An embodiment of the present invention provides a sound-generating device 100 , which includes a basin frame 1 , a vibration system 2 , and a magnetic circuit system 3 .
  • the magnetic circuit system 3 includes a magnetic bowl 31 fixed on the basin frame 1 and a magnetic steel 32 and an auxiliary magnetic steel 33 fixed on the magnetic bowl 31.
  • the magnetic steel 32 is spaced apart from the auxiliary magnetic steel 33.
  • a magnetic gap 34 is formed.
  • the auxiliary magnet steel 33 also includes a first auxiliary magnet steel 331, a second auxiliary magnet steel 332, a third auxiliary magnet steel 333, and a fourth auxiliary magnet steel 334,
  • the first auxiliary magnet steel 331, the second auxiliary magnet steel 332, the third auxiliary magnet steel 333, and the fourth auxiliary magnet steel 334 are arranged at intervals around the magnet steel 32 to form the Magnetic gap 34;
  • first auxiliary magnet 331 and the second auxiliary magnet 332 are covered with the magnetic conductive plate 35, and the magnetic conductive plate 35 is fixed to the basin frame 1;
  • the magnetic bowl 31 is also provided with a ventilation hole 311, and the ventilation isolator 6 covers the ventilation hole 311.
  • the magnet 32 also includes a first main magnet 321 and a second main magnet 322.
  • the pole core is sandwiched between the first main magnet 321 and the second main magnet 322. 5.
  • the vibration system 2 includes a diaphragm 21 fixed on the basket 1 and a voice coil 22 that drives the diaphragm 21 to vibrate and produce sound.
  • the voice coil 22 is at least partially inserted in the magnetic gap 34 .
  • the voice coil 22 includes a first voice coil 221 and a second voice coil 222.
  • One end of the first voice coil 221 is fixed to the side of the diaphragm 21 close to the magnetic circuit system 3.
  • One end of the coil 222 is fixed to an end of the first voice coil 221 close to the magnetic circuit system 3 , and the first voice coil 221 and the second voice coil 222 are insulated from each other.
  • the diaphragm 21 further includes an annular fixing portion 211 fixed to the basket 1 , a folding ring portion 212 fixed to the inner circumference of the fixing portion 211 , and a ring portion 212 fixed to the inner circumference of the fixing portion 212 .
  • the first voice coil 221 is fixed on the side of the dome 213 facing the magnetic circuit system 3 .
  • the voice coil 22 is formed by winding a continuous energized wire.
  • the voice coil 22 has a hollow circular structure as a whole and has a height.
  • the voice coil 22 is inserted into In the magnetic gap 34, the conductive member 4 is electrically connected to the voice coil 22.
  • the conductive member 4 is FPC.
  • the first voice coil 221 and the second voice coil 222 are integrally wound and formed.
  • the second voice coil 222 takes over the winding end point of the first voice coil 221 and continues to be coaxially wound. Such a design makes the first voice coil 221 act as a voice coil skeleton. The second voice coil 222 is continued to be wound on the skeleton structure formed by 221. In the entire voice coil 22 structure, the second voice coil 222 is used for energization and driving. At this time, the wires of the first voice coil 221 are connected to the The wires of the second voice coil 222 are insulated from each other.
  • the projection of the second voice coil 222 on a plane parallel to the vibration direction of the diaphragm 21 is covered by the projection of the main magnet 32 on a plane parallel to the vibration direction of the diaphragm 21 , so that The second voice coil 222 can perform a certain position adjustment within the magnetic gap 34.
  • the second voice coil 221 can be adjusted by controlling the number of turns of the first voice coil 221 during winding.
  • the length of the loop 222 inserted into the magnetic gap 34 .
  • the voice coil 22 forms an electromagnetic field through a structure inserted in the magnetic gap 34.
  • the first voice coil 221 is connected to the diaphragm 21, and the second voice coil 221 is connected to the diaphragm 21.
  • the voice coil 222 is connected to the first voice coil 221, which is equivalent to the first voice coil 221 serving as a supporting structure between the second voice coil 222 and the diaphragm 21.
  • the overall position of the second voice coil 222 in the magnetic gap 33 can be adjusted, thereby realizing the position of the second voice coil 222 in the magnetic circuit system 3 Maximization of medium BL.
  • the thickness of the first voice coil 221 is smaller than the thickness of the second voice coil 222 .
  • the first voice coil 221 only serves as a supporting structure for the second voice coil 222.
  • the voice coil 22 is used to energize the pair.
  • the second voice coil 222 is the only structure that drives the diaphragm. Therefore, in order to improve the acoustic effect, the width of the second voice coil 222 is increased.
  • the voice coil 22 in the sound-generating device 100 of the present invention includes a first voice coil 221 and a second voice coil 222, both of which are annular.
  • One end of the first voice coil 221 is fixed on the vibrator.
  • the diaphragm 21 is close to the side of the magnetic circuit system 3.
  • the second voice coil 222 is fixed to an end of the first voice coil 221 close to the magnetic circuit system 3.
  • the first voice coil 221 and the third voice coil 222 are connected to the magnetic circuit system 3.
  • the two voice coils 222 are insulated from each other; the first voice coil 221 is designed as a support for the second voice coil 222 to replace the conventional voice coil skeleton structure, so as to facilitate flexible adjustment by adjusting the number of turns of the first voice coil 221.
  • the position of the second voice coil 222 in the magnetic gap 34 along the vibration direction of the diaphragm maximizes the BL of the second voice coil 222 in the magnetic circuit, effectively improving the acoustic performance.

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

Abstract

本发明提供了一种发声器件，其包括盆架、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，所述磁路系统具有主磁钢和副磁钢间隔设置形成的磁间隙；所述振动系统包括固定于所述盆架的振膜以及至少部分插设于所述磁间隙以驱动所述振膜振动发声的音圈，其特征在于，所述音圈包括皆呈环状第一音圈和第二音圈，所述第一音圈的一端固定于所述振膜靠近所述磁路系统的一侧，所述第二音圈固定于所述第一音圈靠近所述磁路系统的一端，所述第一音圈与所述第二音圈相互绝缘。本发明提供的发声器件可调节音圈位置，声学性能好。

Description

发声器件 技术领域
本发明涉及电声转换领域，尤其涉及一种发声器件。
 背景技术
发声器件作为手机等移动终端的主要元器件之一，其主要用于将电信号传换成声音信号，也可以用于耳机。
相关技术的发声器件包括盆架、固定于所述盆架的振动系统和具有磁间隙的磁路系统，所述振动系统包括固定于所述盆架用于振动发声的振膜，插设于所述磁间隙以驱动所述振膜振动的音圈。
 技术问题
然而，相关技术的发声器件中，音圈需要骨架来进行支撑，骨架固定的结构使得音圈在磁间隙中的位置不能相对于磁路系统进行调整，这样的设计不利于音圈的BL在磁路系统中最大化，影响发声器件的出声效果。
因此，实有必要提供一种新的发声器件解决上述技术问题。
 技术解决方案
本发明的目的在于提供一种可调节音圈位置、以实现音圈BL最大的发声器件。
为了达到上述目的，本发明提供了一种发声器件，其包括盆架、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，所述磁路系统具有主磁钢和副磁钢间隔设置形成的磁间隙；所述振动系统包括固定于所述盆架的振膜以及至少部分插设于所述磁间隙以驱动所述振膜振动发声的音圈，其特征在于，所述音圈包括皆呈环状第一音圈和第二音圈，所述第一音圈的一端固定于所述振膜靠近所述磁路系统的一侧，所述第二音圈固定于所述第一音圈靠近所述磁路系统的一端，所述第一音圈与所述第二音圈相互绝缘。
优选的，所述第一音圈与所述第二音圈为一体绕制成型结构。
优选的，所述第二音圈接替于所述第一音圈的绕制结束点继续同轴绕制形成。
优选的，所述第二音圈在平行于所述振膜的振动方向的平面上的投影被所述主磁钢在平行于所述振膜的振动方向的平面上的投影所覆盖。
优选的，沿垂直于所述振膜的振动方向，所述第一音圈的厚度小于所述第二音圈的厚度。
优选的，所述振膜包括固定于所述盆架的呈环状的固定部、固定于所述固定部内周侧的折环部、固定于所述折环部内周侧的球顶，所述第一音圈固定于所述球顶朝向所述磁路系统的一侧。
优选的，所述发声器件还包括透气隔离件，所述磁路系统还包括磁轭，所述主磁钢和所述副磁钢固定于所述磁轭，所述磁轭上相对设置有透气孔，所述透气隔离件覆盖于所述透气孔上。
 有益效果
与相关技术相比，本发明的发声器件中的音圈包括皆呈环状第一音圈和第二音圈，所述第一音圈的一端固定于所述振膜靠近所述磁路系统的一侧，所述第二音圈固定于所述第一音圈靠近所述磁路系统的一端，所述第一音圈与所述第二音圈相互绝缘；通过将第一音圈作为第二音圈的支撑设计，以替代常规的音圈骨架结构，以便于灵活通过调节第一音圈的匝数从而调整第二音圈沿振膜的振动方向在磁间隙中的位置，使得第二段音圈在磁路中BL最大化，有效的提升了声学性能。
 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为本发明发声器件的立体结构示意图；
图2为本发明发声器件的分解图；
图3为沿图1中A-A线的剖视图；
图4为本发明音圈的结构示意图。
图中，100、发声器件，1、盆架，2振动系统，21、振膜，211、固定部，212、折环部，213、球顶，22、音圈，221、第一音圈，222、第二音圈，3、磁路系统，31、磁碗，311、透气孔，32、主磁钢，321、第一主磁钢，322、第二主磁钢，33、副磁钢，331、第一副磁钢，332、第二副磁钢，333、第三副磁钢，334、第四副磁钢，34、磁间隙，35、导磁板，4、导电件，5、极芯，6、透气隔离件。
 本发明的最佳实施方式
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1-4，本发明实施例提供了一种发声器件100，其包括盆架1、振动系统2、磁路系统3。
所述磁路系统3包括固定于所述盆架1的磁碗31和收容固定于所述磁碗31的磁钢32和副磁钢33，所述磁钢32与所述副磁钢33间隔形成磁间隙34，在一种可能的实施例中，所述副磁钢33还包括第一副磁钢331、第二副磁钢332、第三副磁钢333、第四副磁钢334，所述第一副磁钢331、所述第二副磁钢332、所述第三副磁钢333、所述第四副磁钢334间隔分布设置在所述磁钢32的周围，形成所述磁间隙34；
其中，所述第一副磁钢331和所述第二副磁钢332上盖设有所述导磁板35，所述导磁板35固定于所述盆架1；
所述磁碗31上还设置有透气孔311，透气隔离件6覆盖于所述透气孔311上。
具体的，所述磁钢32还包括第一主磁钢321和第二主磁钢322，所述第一主磁钢321和所述第二主磁钢322之间夹设有所述极芯5。
所述振动系统2包括固定于所述盆架1的振膜21以及驱动所述振膜21振动发声的音圈22，所述音圈22至少部分插设于所述磁间隙34。
所述音圈22包括第一音圈221和第二音圈222，所述第一音圈221的一端固定于所述振膜21靠近所述磁路系统3的一侧，所述第二音圈222的一端固定于所述第一音圈221靠近所述磁路系统3的一端，所述第一音圈221与所述第二音圈222相互绝缘。
所述振膜21还包括固定于所述盆架1的呈环状的固定部211、固定于所述固定部211内周侧的折环部212以及固定于所述折环部212内周侧的球顶213，所述第一音圈221固定于所述球顶213朝向所述磁路系统3的一侧。
具体的，在本发明实施例中，所述音圈22由连续的通电导线绕制形成，所述音圈22整体呈中空的圈形结构，且具有高度，所述音圈22通过插设于所述磁间隙34中，所述导电件4与所述音圈22电连接，所述导电件2与音圈22通电时，通过电磁反应带动所述振膜21实现出声效果，优选的，所述导电件4为FPC。
所述第一音圈221与所述第二音圈222为一体绕制成型结构。
所述第二音圈222接替于所述第一音圈221的绕制结束点继续同轴绕制形成，这样的设计使所述第一音圈221充当音圈骨架，所述第一音圈221形成的骨架结构上继续绕制形成所述第二音圈222，在整个音圈22结构中，所述第二音圈222用于通电驱动，此时，第一音圈221的导线与所述第二音圈222的导线相互绝缘。
所述第二音圈222在平行于所述振膜21的振动方向的平面上的投影被所述主磁钢32在平行于所述振膜21的振动方向的平面上的投影所覆盖，使得所述第二音圈222能够在所述磁间隙34内进行一定的位置调节，具体的，可以通过控制所述第一音圈221在绕制时的匝数的方式，调节所述第二音圈222插设于所述磁间隙34中的长度。
具体的，所述音圈22通过插设于所述磁间隙34的结构形成电磁场，在本发明实施例中，所述第一音圈221与所述振膜21相连接，而所述第二音圈222与所述第一音圈221相连接，相当于所述第一音圈221作为所述第二音圈222与所述振膜21之间的支撑结构，此时，根据所述磁间隙34的位置，调节所述第一音圈221的绕制高度，可以调节所述第二音圈222在所述磁间隙33中的整体位置，从而实现第二音圈222在磁路系统3中BL的最大化。
优选的，沿垂直于所述振膜21的振动方向，所述第一音圈221的厚度小于所述第二音圈222的厚度。
具体的，在本发明实施例中，第一音圈221仅作为所述第二音圈222的支撑结构，在整个所述发声器件100发声的过程中，所述音圈22中用于通电对所述振膜产生驱动作用的结构只有所述第二音圈222，因此，为提升声学效果，将所述第二音圈222的宽度增大。
与相关技术相比，本发明的发声器件100中的所述音圈22包括皆呈环状第一音圈221和第二音圈222，所述第一音圈221的一端固定于所述振膜21靠近所述磁路系统3的一侧，所述第二音圈222固定于所述第一音圈221靠近所述磁路系统3的一端，所述第一音圈221与所述第二音圈222相互绝缘；通过将第一音圈221作为第二音圈222的支撑设计，以替代常规的音圈骨架结构，，以便于灵活通过调节第一音圈221的匝数，从而调整第二音圈222沿振膜的振动方向在磁间隙34中的位置，使得第二音圈222在磁路中BL最大化，有效的提升了声学性能。
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 (7)

  1. 一种发声器件，其包括盆架、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，所述磁路系统具有主磁钢和副磁钢间隔设置形成的磁间隙；所述振动系统包括固定于所述盆架的振膜以及至少部分插设于所述磁间隙以驱动所述振膜振动发声的音圈，其特征在于，所述音圈包括皆呈环状第一音圈和第二音圈，所述第一音圈的一端固定于所述振膜靠近所述磁路系统的一侧，所述第二音圈固定于所述第一音圈靠近所述磁路系统的一端，所述第一音圈与所述第二音圈相互绝缘。
  2. 根据权利要求1所述的发声器件，其特征在于，所述第一音圈与所述第二音圈为一体绕制成型结构。
  3. 根据权利要求2所述的发声器件，其特征在于，所述第二音圈接替于所述第一音圈的绕制结束点继续同轴绕制形成。
  4. 根据权利要求1所述的发声器件，其特征在于，所述第二音圈在平行于所述振膜的振动方向的平面上的投影被所述主磁钢在平行于所述振膜的振动方向的平面上的投影所覆盖。
  5. 根据权利要求1所述的发声器件，其特征在于，沿垂直于所述振膜的振动方向，所述第一音圈的厚度小于所述第二音圈的厚度。
  6. 根据权利要求1所述的发声器件，其特征在于，所述振膜包括固定于所述盆架的呈环状的固定部、固定于所述固定部内周侧的折环部、固定于所述折环部内周侧的球顶，所述第一音圈固定于所述球顶朝向所述磁路系统的一侧。
  7. 根据权利要求1所述的发声器件，其特征在于，所述发声器件还包括透气隔离件，所述磁路系统还包括磁碗，所述主磁钢和所述副磁钢固定于所述磁碗，所述磁碗上相对设置有透气孔，所述透气隔离件覆盖于所述透气孔上。
PCT/CN2022/122681 2022-08-19 2022-09-29 发声器件 Ceased WO2024036714A1 (zh)

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