WO2022126793A1 - Sound production device - Google Patents

Sound production device Download PDF

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Publication number
WO2022126793A1
WO2022126793A1 PCT/CN2020/142156 CN2020142156W WO2022126793A1 WO 2022126793 A1 WO2022126793 A1 WO 2022126793A1 CN 2020142156 W CN2020142156 W CN 2020142156W WO 2022126793 A1 WO2022126793 A1 WO 2022126793A1
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WO
WIPO (PCT)
Prior art keywords
sound
dome
main
connecting part
magnetic
Prior art date
Application number
PCT/CN2020/142156
Other languages
French (fr)
Chinese (zh)
Inventor
金鑫
张帆
钟志威
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声光电科技(常州)有限公司
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 瑞声声学科技(深圳)有限公司, 瑞声光电科技(常州)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022126793A1 publication Critical patent/WO2022126793A1/en

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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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/22—Clamping rim of diaphragm or cone against seating
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/127—Non-planar diaphragms or cones dome-shaped
    • 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 invention relates to the technical field of electro-acoustic conversion, in particular to a sound-generating device.
  • speakers are widely used in terminal electronic devices such as mobile phones, tablets, and computers.
  • the structure of speakers generally includes a magnetic circuit system, a vibration system and a fixed system.
  • the vibration system usually includes The dome and the voice coil, while the area of the dome in the related art is relatively small so that it affects the high-order harmonic energy to generate noise, which in turn affects the sound effect of the speaker.
  • the purpose of the present invention is to provide a loudspeaker box with maximum dome area and good acoustic performance.
  • the present invention provides a sound-generating device, which includes a basin frame, a vibration system and a magnetic circuit system fixed to the basin frame, and the vibration system includes a vibrating membrane, a skeleton, and a device that drives the vibrating membrane to vibrate.
  • a voice coil the vibrating membrane includes a dome and a main sound membrane that are stacked in sequence, and the main sound membrane includes a folded ring portion, a first fixed portion located inside the folded ring portion, and a second fixed portion located outside the folded ring portion.
  • the first fixing part has a first surface facing the spherical top and a second surface facing away from the spherical top
  • the spherical top includes a main body part and a connecting part extending from the main body part
  • the first surface is all connected to the connecting portion of the dome
  • the second fixing portion is connected to the basin frame
  • the frame includes a first connecting portion, connected to both sides of the first connecting portion and facing each other.
  • a first sub-connection part and a second sub-connection part are provided, and the first connection part is connected with the second surface.
  • the basin frame is arranged on the outer periphery of the frame and is spaced from the frame to form a storage space between the frame and the basin frame, and the folding ring portion is located in the storage space, so A stepped portion is formed between the main body portion and the connecting portion, and the first fixing portion is accommodated in the stepped portion.
  • the second fixing portion has a third sub-connecting portion and a fourth sub-connecting portion that are perpendicular to each other and are both connected to the basin frame, and the third sub-connecting portion has a third sub-connecting portion disposed toward the dome.
  • the third sub-connecting portion has a third sub-connecting portion disposed toward the dome.
  • the basin frame has a body portion arranged around the outer periphery of the frame, The body portion has a top surface and is bent from the outer periphery of the top surface in a direction away from the top surface, the top surface is connected with the fourth surface, and the side surface is connected with the sixth surface.
  • the vibration system further includes a first flexible circuit board and a second flexible circuit board, the first flexible circuit board is connected to the first sub-connecting part, and the second flexible circuit board is connected to the second sub-connector. Connections are connected.
  • the vibration system further includes a first auxiliary sound film and a second auxiliary sound film arranged at intervals, and the first auxiliary sound film is connected to a side of the first flexible circuit board away from the skeleton, The second auxiliary sound membrane is connected to a side of the second flexible circuit board away from the frame.
  • the vibration system further includes a washer, and the main body portion, the washer and the voice coil are stacked in sequence.
  • the voice coil and the washer are both rectangular ring structures, and the shape and size of the washer are adapted to the shape and size of the voice coil.
  • the body portion has a bottom surface disposed opposite to the top surface
  • the magnetic circuit system includes a magnetic yoke connected to the bottom surface, a main magnetic steel located inside the magnetic yoke, and a space surrounding the magnetic yoke.
  • a plurality of auxiliary magnetic steels on the periphery of the main magnetic steel are provided with magnetic gaps between the plurality of auxiliary magnetic steels and the main magnetic steel, and a part of the voice coil is suspended in the magnetic gaps.
  • the magnetic circuit system further includes a pole core stacked on the main magnetic steel, the voice coil has a through hole and a voice coil body surrounding the through hole, the pole core is accommodated in the inside the through hole and between the main magnet and the dome.
  • the fixing system further includes a bottom plate, and the bottom plate is covered on a side of the main magnet steel and the plurality of secondary magnetic steels that is away from the yoke to support the plurality of secondary magnetic steels and the plurality of secondary magnetic steels. the main magnet.
  • the first surface of the first fixing part is entirely connected to the connecting part of the spherical top, and only part of the first surface of the first fixing part is connected to the connecting part of the spherical top.
  • the present invention enables the spherical top to cover the diaphragm ring to the maximum extent The inner area maximizes the dome area, thereby improving the higher harmonic energy of the sound generator during vibration.
  • Fig. 1 is the front view of the sounding device provided by the present invention
  • Fig. 2 is an exploded view of the sounding device shown in Fig. 1;
  • Fig. 3 is the perspective view of the main sound membrane in the sound producing device shown in Fig. 2;
  • Fig. 4 is the perspective view of the dome in the sounding device shown in Fig. 2;
  • FIG. 5 is a cross-sectional view of the sounding device shown in FIG. 1 along the A-A direction;
  • FIG. 6 is a perspective view of a basin frame in the sound generating device shown in FIG. 2 .
  • FIG. 2 is an exploded view of the sounding device
  • FIG. 5 is a cross-sectional view of the sounding device shown in FIG. 1 along the A-A direction.
  • the present invention provides a sounding device 100, which includes a fixed system 1, a vibration system 2 and a magnetic circuit system 3.
  • the fixed system 1 can provide support for the vibration system 2 and the magnetic circuit system 3, and the magnetic circuit system 3 can drive the vibration system 2. Vibrate sound.
  • the vibration system 2 includes a diaphragm, a frame 22 and a voice coil 25 for driving the diaphragm to vibrate.
  • the diaphragm includes a dome 21 and a main sound diaphragm 22 that are stacked in sequence
  • the main sound diaphragm 22 includes a folding ring part 221, a first fixing part 223 located inside the folded ring part 221 and a second fixing part 224 located outside the folded ring part
  • the first fixing part 223 has a first surface 2231 facing the dome 21 and a second fixing part 223 facing away from the dome Two surfaces 2232
  • the dome 21 includes a main body 211 and a connecting part 212 extending from the main body 211
  • the first surface 2231 is entirely connected to the connecting part 212 of the dome 21
  • the second fixing part 224 is connected to the basin frame 11
  • the main body A stepped portion 213 is formed between the portion 211 and the connecting portion 212 , and the first fixing portion 223 is accommodated
  • the dome 21 maximizes the coverage of the area of the first fixing portion 223 , which is beneficial to improve the energy of high-order harmonics, thereby improving the sound production of the sound producing device 100 . Effect.
  • the frame 23 includes a first connecting portion 231 , a first sub-connecting portion 232 and a second sub-connecting portion 233 that are connected to both sides of the first connecting portion 231 and are oppositely disposed, and the first connecting portion 231 Connected to the second surface 2232 , the basin frame 11 is disposed on the outer periphery of the frame 23 and is spaced from the frame 23 to form a storage space 234 between the frame 23 and the basin frame 11 .
  • the coverage area of the upper surface 2311 of the first connecting part 231 is small, and the structure of the metal frame 23 is beneficial to reduce the quality of the vibration system 2 .
  • the second fixing part 224 has a third sub-connecting part 224 a and a fourth sub-connecting part 224 b which are perpendicular to each other and are connected to the basin frame 11 .
  • the main body portion 11a and the protruding portion 11b are provided.
  • the main body portion 11a has a top surface 112, a bottom surface 115 disposed opposite to the top surface 112, and a side surface 113 bent from the outer periphery of the top surface 112 toward the direction away from the top surface 112.
  • the inner surface 114 the top surface 112 is connected with the fourth surface 2242
  • the side surface 113 is connected with the sixth surface 2244
  • the inner surface 114 is connected with the ring portion 221 .
  • the vibration system further includes a first flexible circuit board 26 and a second flexible circuit board 27, a first auxiliary sound film 28 and a second auxiliary sound film 29 arranged at intervals, and the first flexible circuit board 26 includes a pad 26a, a first terminal 262, a second terminal 263, the second flexible circuit board 27 includes a pad 27a, and the pad 26a and the pad 27a can be the first flexible circuit board 26 and the second flexible circuit board 27 provides a platform for connections to other devices.
  • the first flexible circuit board 26 and the second flexible circuit board 27 include a seventh surface 2611 and an eighth surface 2612 disposed opposite to each other.
  • a flexible circuit board 26 is connected to the first sub-connecting portion 232 , the second flexible circuit board 27 is connected to the second sub-connecting portion 233 , and the first auxiliary sound film 28 is connected to the side of the first flexible circuit board 26 away from the frame 23 , the second auxiliary sound film 29 is connected to the side of the second flexible circuit board 27 away from the frame 23 .
  • the vibration system 2 further includes a washer 24, and the main body portion 211, the washer 24 and the voice coil 25 are stacked in sequence.
  • the voice coil 25 and the washer 24 are both rectangular and annular structures, and the shape and size of the washer 24 are adapted to the shape and size of the voice coil 25 .
  • the gasket 24 has a first upper end surface 241 and a first lower end surface 242 disposed opposite to each other, the voice coil 25 has a voice coil body 251, a first lead 252, a second lead 253 and a through hole 254, the first lead 252 and the pad 26a
  • the second lead 253 is electrically connected to the pad 26a, so that the voice coil 25 and the first flexible circuit board 26 are electrically connected.
  • the voice coil body 251 is a closed annular structure, and has a second upper end surface 2511 and a second lower end surface 2512 arranged opposite to each other.
  • the first terminal 262 of the pad 26a is electrically connected, and the second lead 253 can be led out from the second lower end surface 2512 of the voice coil 25 to the pad 26a, and is electrically connected to the second terminal 263 of the pad 26a.
  • the voice coil 25 and the washer 24 are arranged in the same rectangular ring structure, and the sizes can be matched, and the structure is simple, which is not only conducive to improving the dimensional accuracy of the parts, thereby improving the consistency of product assembly, and the washer 24 is between the ball and the ball. Between the top 21 and the voice coil 25 , the height of the voice coil 25 can be adjusted by adjusting the height of the washer 24 .
  • the magnetic circuit system 3 includes a magnetic yoke 31, a main magnetic steel 32, a first auxiliary magnetic steel 33, a second auxiliary magnetic steel 34, a third auxiliary magnetic steel 35, a fourth auxiliary magnetic steel 36 and a pole core 37,
  • the yoke 31 is connected to the bottom surface 115 and is arranged around the outer side of the voice coil 25 , and the yoke 31 is spaced apart from the first auxiliary sound membrane 28 and the second auxiliary sound membrane 29 .
  • the main magnetic steel 32 is located inside the yoke 31, and the first auxiliary magnetic steel 33, the second auxiliary magnetic steel 34, the third auxiliary magnetic steel 35 and the fourth auxiliary magnetic steel 36 are all spaced around the periphery of the main magnetic steel 32, and The first secondary magnetic steel 33 , the second secondary magnetic steel 34 , and the third secondary magnetic steel 35 all have a magnetic gap 38 with the main magnetic steel 32 , and a part of the voice coil 25 is inserted into the magnetic gap 38 .
  • the pole core 37 is disposed in the through hole 254 of the voice coil 25 , and the pole core 37 is disposed adjacent to the main magnet 32 , and the pole core 37 is used to guide the magnetic field generated by the main magnet 32 to the voice coil 25 .
  • the main magnetic steel 32 can be a regular structure, for example, the main magnetic steel 32 can be a cuboid structure, the first auxiliary magnetic steel 33 and the first side of the main magnetic steel 32 are spaced apart from each other to form a first gap, and the second auxiliary magnetic steel 34 and The second side surfaces of the main magnetic steel 32 are spaced apart from each other to form a second gap, the third auxiliary magnetic steel 35 and the third side surface of the main magnetic steel 32 are spaced apart from each other to form a third gap, and the fourth auxiliary magnetic steel 36 and the main magnetic steel 36 are spaced apart from each other to form a third gap.
  • the fourth sides of the steel 32 are spaced from each other to form a fourth gap, and the fourth gap, the third gap, the second gap, and the first gap communicate with each other to form a magnetic gap 38 .
  • the first side surface, the second side surface, the third side surface and the fourth side surface of the main magnet 32 are connected in sequence.
  • the structure of the first auxiliary magnetic steel 33 may be different from that of the second auxiliary magnetic steel 34.
  • the first auxiliary magnetic steel 33 may be a regular cuboid structure
  • the second auxiliary magnetic steel 34 may include a first part and a second part. The second part is provided on the side of the first part.
  • the structure of the third secondary magnetic steel 35 may be the same as that of the first secondary magnetic steel 33
  • the structure of the fourth secondary magnetic steel 36 may be the same as that of the second secondary magnetic steel 34 .
  • the structures of the first auxiliary magnetic steel 33 , the second auxiliary magnetic steel 34 , the third auxiliary magnetic steel 35 and the fourth auxiliary magnetic steel 36 may also be the same.
  • the structure of the main magnetic steel 32 is not limited to this.
  • the main magnetic steel 32 may also have other regular structures, or the main magnetic steel 32 may also have an irregular structure.
  • the fixing system 1 further includes a bottom plate 12 , and the bottom plate 12 is covered with the main magnetic steel 32 , the first auxiliary magnetic steel 33 , the second auxiliary magnetic steel 34 , the third auxiliary magnetic steel 35 and the fourth auxiliary magnetic steel 36 .
  • the side facing away from the yoke 31 supports the main magnet 32 , the first secondary magnet 33 , the second secondary magnet 34 , the third secondary magnet 35 and the fourth secondary magnet 36 .

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

Abstract

Provided is a sound production device. The sound production device comprises a basket, and a vibration system and a magnetic circuit system which are fixedly connected to the basket. The vibration system comprises a diaphragm, a framework and a voice coil for driving the diaphragm to vibrate; the diaphragm comprises a dome and a main voice diaphragm which are sequentially arranged in a stacked manner; the main voice diaphragm comprises a folding ring portion, a first fixing portion located on the inner side of the folding ring portion, and a second fixing portion located on the outer side of the folding ring portion; the first fixing portion is provided with a first surface facing the dome, and a second surface facing away from the dome; the dome comprises a main body portion and a connecting portion extending out of the main body portion; the first surface is completely connected to the connecting portion of the dome; the second fixing portion is connected to the basket; the framework comprises a first connecting portion, and a first connecting sub-portion and a second connecting sub-portion which are connected to two sides of the first connecting portion and are arranged opposite each other, and the first connecting portion is connected to the second surface. According to the sound production device, the dome is maximized, and the sound production effect can be improved.

Description

一种发声装置a sound device
本发明要求于2020年12月18日提交中国专利局、申请号为202011507347.7、发明名称为“一种发声装置”的中国专利申请的优先权，其全部内容通过引用结合在本发明中。The present invention claims the priority of the Chinese patent application with the application number 202011507347.7 and the title of the invention "a sound-emitting device" filed with the China Patent Office on December 18, 2020, the entire contents of which are incorporated herein by reference.
技术领域technical field
本发明涉及电声转换技术领域，特别涉及一种发声装置。The invention relates to the technical field of electro-acoustic conversion, in particular to a sound-generating device.
背景技术Background technique
扬声器作为一种能够将电能转化为声能的器件，其广泛应用于手机、平板、电脑等终端电子装置中，扬声器的结构一般包括磁路***、振动***和固定***，其中，振动***通常包括球顶和音圈，而相关技术中球顶的面积比较小以至于影响高次谐波能量产生噪声，进而影响扬声器的发声效果。As a device that can convert electrical energy into sound energy, speakers are widely used in terminal electronic devices such as mobile phones, tablets, and computers. The structure of speakers generally includes a magnetic circuit system, a vibration system and a fixed system. The vibration system usually includes The dome and the voice coil, while the area of the dome in the related art is relatively small so that it affects the high-order harmonic energy to generate noise, which in turn affects the sound effect of the speaker.
因此，有必要提供一种能增大球顶面积的方案解决上述问题。Therefore, it is necessary to provide a solution that can increase the area of the dome to solve the above problems.
技术问题technical problem
本发明的目的在于提供一种球顶面积最大化，声学性能好的扬声器箱。The purpose of the present invention is to provide a loudspeaker box with maximum dome area and good acoustic performance.
技术解决方案technical solutions
为了达到上述目的，本发明提供一种发声装置，其包括盆架以及固接于所述盆架的振动***和磁路***，所述振动***包括振膜、骨架和驱动所述振膜振动的音圈，所述振膜包括依次层叠设置的球顶和主音膜，所述主音膜包括折环部、位于所述折环部内侧的第一固定部和位于所述折环部外侧的第二固定部，所述第一固定部具有朝向所述球顶的第一面和背向所述球顶的第二面，所述球顶包括主体部和自所述主体部延伸出的连接部，所述第一面全部与所述球顶的连接部连接，所述第二固定部与所述盆架连接，所述骨架包括第一连接部、连接于所述第一连接部两侧且相对设置的第一子连接部和第二子连接部，所述第一连接部与所述第二面相连接。In order to achieve the above object, the present invention provides a sound-generating device, which includes a basin frame, a vibration system and a magnetic circuit system fixed to the basin frame, and the vibration system includes a vibrating membrane, a skeleton, and a device that drives the vibrating membrane to vibrate. A voice coil, the vibrating membrane includes a dome and a main sound membrane that are stacked in sequence, and the main sound membrane includes a folded ring portion, a first fixed portion located inside the folded ring portion, and a second fixed portion located outside the folded ring portion. a fixing part, the first fixing part has a first surface facing the spherical top and a second surface facing away from the spherical top, the spherical top includes a main body part and a connecting part extending from the main body part, The first surface is all connected to the connecting portion of the dome, the second fixing portion is connected to the basin frame, and the frame includes a first connecting portion, connected to both sides of the first connecting portion and facing each other. A first sub-connection part and a second sub-connection part are provided, and the first connection part is connected with the second surface.
可选的，所述盆架设置在所述骨架外周且与所述骨架间隔设置以在所述骨架与所述盆架之间形成收纳空间，所述折环部位于所述收纳空间内，所述主体部和所述连接部之间形成台阶部，所述第一固定部收容在所述台阶部内。Optionally, the basin frame is arranged on the outer periphery of the frame and is spaced from the frame to form a storage space between the frame and the basin frame, and the folding ring portion is located in the storage space, so A stepped portion is formed between the main body portion and the connecting portion, and the first fixing portion is accommodated in the stepped portion.
可选的，所述第二固定部具有相互垂直且均与所述盆架连接的第三子连接部和第四子连接部，所述第三子连接部具有朝向所述球顶设置的第三面和背向所述球顶设置的第四面，所述第四子连接部包括相背设置的第五面和第六面，所述盆架具有环绕所述骨架外周设置的本体部，所述本体部具有顶面和自顶面的外周缘朝背离所述顶面的方向弯折，所述顶面与所述第四面相连接，所述侧面与所述第六面相连接。Optionally, the second fixing portion has a third sub-connecting portion and a fourth sub-connecting portion that are perpendicular to each other and are both connected to the basin frame, and the third sub-connecting portion has a third sub-connecting portion disposed toward the dome. Three sides and a fourth side facing away from the dome, the fourth sub-connecting portion includes a fifth side and a sixth side facing away from each other, the basin frame has a body portion arranged around the outer periphery of the frame, The body portion has a top surface and is bent from the outer periphery of the top surface in a direction away from the top surface, the top surface is connected with the fourth surface, and the side surface is connected with the sixth surface.
可选的，所述振动***还包括第一柔性电路板和第二柔性电路板，所述第一柔性电路板与第一子连接部连接，所述第二柔性电路板与所述第二子连接部连接。Optionally, the vibration system further includes a first flexible circuit board and a second flexible circuit board, the first flexible circuit board is connected to the first sub-connecting part, and the second flexible circuit board is connected to the second sub-connector. Connections are connected.
可选的，所述振动***还包括间隔设置的第一辅助音膜和第二辅助音膜，所述第一辅助音膜与所述第一柔性电路板中远离所述骨架的一侧连接，所述第二辅助音膜与所述第二柔性电路板中远离所述骨架的一侧连接。Optionally, the vibration system further includes a first auxiliary sound film and a second auxiliary sound film arranged at intervals, and the first auxiliary sound film is connected to a side of the first flexible circuit board away from the skeleton, The second auxiliary sound membrane is connected to a side of the second flexible circuit board away from the frame.
可选的，所述振动***还包括垫圈，所述主体部、所述垫圈和所述音圈依次层叠设置。Optionally, the vibration system further includes a washer, and the main body portion, the washer and the voice coil are stacked in sequence.
可选的，所述音圈和所述垫圈均为矩形环状结构，且所述垫圈的形状和尺寸与所述音圈的形状和尺寸相适配。Optionally, the voice coil and the washer are both rectangular ring structures, and the shape and size of the washer are adapted to the shape and size of the voice coil.
可选的，所述本体部具有与所述顶面相背设置的底面，所述磁路***包括与所述底面连接的磁轭、位于所述磁轭内侧的主磁钢和间隔围设在所述主磁钢周缘的多个副磁钢，所述多个副磁钢均与所述主磁钢之间具有磁间隙，所述音圈的一部分悬置于所述磁间隙内。Optionally, the body portion has a bottom surface disposed opposite to the top surface, and the magnetic circuit system includes a magnetic yoke connected to the bottom surface, a main magnetic steel located inside the magnetic yoke, and a space surrounding the magnetic yoke. A plurality of auxiliary magnetic steels on the periphery of the main magnetic steel are provided with magnetic gaps between the plurality of auxiliary magnetic steels and the main magnetic steel, and a part of the voice coil is suspended in the magnetic gaps.
可选的，所述磁路***还包括层叠设置在主磁钢上的极芯，所述音圈具有通孔和围绕设置形成所述通孔的音圈本体，所述极芯容置在所述通孔内且位于所述主磁钢和所述球顶之间。Optionally, the magnetic circuit system further includes a pole core stacked on the main magnetic steel, the voice coil has a through hole and a voice coil body surrounding the through hole, the pole core is accommodated in the inside the through hole and between the main magnet and the dome.
可选的，所述固定***还包括底板，所述底板盖设在所述主磁钢和所述多个副磁钢中背离所述磁轭的一侧以支撑所述多个副磁钢和所述主磁钢。Optionally, the fixing system further includes a bottom plate, and the bottom plate is covered on a side of the main magnet steel and the plurality of secondary magnetic steels that is away from the yoke to support the plurality of secondary magnetic steels and the plurality of secondary magnetic steels. the main magnet.
有益效果beneficial effect
本发明的有益效果在于：The beneficial effects of the present invention are:
第一固定部的第一面全部与球顶的连接部连接，相对于第一固定部的第一面仅部分与球顶的连接部连接，本发明使得球顶可以最大化覆盖振膜折环内侧区域，实现球顶面积最大化，从而改善发声装置在振动过程中的高次谐波能量。The first surface of the first fixing part is entirely connected to the connecting part of the spherical top, and only part of the first surface of the first fixing part is connected to the connecting part of the spherical top. The present invention enables the spherical top to cover the diaphragm ring to the maximum extent The inner area maximizes the dome area, thereby improving the higher harmonic energy of the sound generator during vibration.
附图说明Description of drawings
图1为本发明提供的发声装置的主视图；Fig. 1 is the front view of the sounding device provided by the present invention;
图2为图1所示发声装置的***图；Fig. 2 is an exploded view of the sounding device shown in Fig. 1;
图3为图2所示发声装置中主音膜的立体图；Fig. 3 is the perspective view of the main sound membrane in the sound producing device shown in Fig. 2;
图4为图2所示发声装置中球顶的立体图；Fig. 4 is the perspective view of the dome in the sounding device shown in Fig. 2;
图5为图1所示发声装置沿A-A方向的剖视图；5 is a cross-sectional view of the sounding device shown in FIG. 1 along the A-A direction;
图6为图2所示发声装置中盆架的立体图。FIG. 6 is a perspective view of a basin frame in the sound generating device shown in FIG. 2 .
本发明的实施方式Embodiments of the present invention
下面结合附图和实施方式对本发明作进一步说明。The present invention will be further described below with reference to the accompanying drawings and embodiments.
请参阅图1和图5，图2为发声装置的***图，图5为图1所示发声装置沿A-A方向的剖视图。本发明提供了一种发声装置100，其中包括固定***1、振动***2和磁路***3，固定***1可以为振动***2和磁路***3提供支撑，磁路***3可以驱动振动***2振动发声。Please refer to FIG. 1 and FIG. 5 , FIG. 2 is an exploded view of the sounding device, and FIG. 5 is a cross-sectional view of the sounding device shown in FIG. 1 along the A-A direction. The present invention provides a sounding device 100, which includes a fixed system 1, a vibration system 2 and a magnetic circuit system 3. The fixed system 1 can provide support for the vibration system 2 and the magnetic circuit system 3, and the magnetic circuit system 3 can drive the vibration system 2. Vibrate sound.
请参阅图1至图4，其中，振动***2包括振膜、骨架22和驱动振膜振动的音圈25，振膜包括依次层叠设置的球顶21和主音膜22，主音膜22包括折环部221、位于折环部221内侧的第一固定部223和位于折环部外侧的第二固定部224，第一固定部223具有朝向球顶21的第一面2231和背向球顶的第二面2232，球顶21包括主体部211和自主体部211延伸出的连接部212，第一面2231全部与球顶21的连接部212连接，第二固定部224与盆架11连接，主体部211和连接部212之间形成台阶部213，第一固定部223收容在台阶部213内。Please refer to FIG. 1 to FIG. 4 , wherein the vibration system 2 includes a diaphragm, a frame 22 and a voice coil 25 for driving the diaphragm to vibrate. The diaphragm includes a dome 21 and a main sound diaphragm 22 that are stacked in sequence, and the main sound diaphragm 22 includes a folding ring part 221, a first fixing part 223 located inside the folded ring part 221 and a second fixing part 224 located outside the folded ring part, the first fixing part 223 has a first surface 2231 facing the dome 21 and a second fixing part 223 facing away from the dome Two surfaces 2232, the dome 21 includes a main body 211 and a connecting part 212 extending from the main body 211, the first surface 2231 is entirely connected to the connecting part 212 of the dome 21, the second fixing part 224 is connected to the basin frame 11, the main body A stepped portion 213 is formed between the portion 211 and the connecting portion 212 , and the first fixing portion 223 is accommodated in the stepped portion 213 .
相关技术中，通常仅将第一面2231的一部分与球顶21的连接部212连接，从而影响高次谐波能量产生噪声，进而影响扬声器100的发声效果。In the related art, only a part of the first surface 2231 is usually connected to the connecting portion 212 of the dome 21 , thereby affecting the high-order harmonic energy to generate noise, thereby affecting the sound-producing effect of the speaker 100 .
本发明通过将第一面2231全部与球顶21的连接部212连接，使得球顶21最大化覆盖第一固定部223的区域，有利于改善高次谐波能量，进而提高发声装置100的发声效果。In the present invention, by connecting all the first surfaces 2231 to the connecting portion 212 of the dome 21 , the dome 21 maximizes the coverage of the area of the first fixing portion 223 , which is beneficial to improve the energy of high-order harmonics, thereby improving the sound production of the sound producing device 100 . Effect.
请参阅图2和图5，骨架23包括第一连接部231、连接于第一连接部231两侧且相对设置的第一子连接部232和第二子连接部233，并且第一连接部231与第二面2232相连接，盆架11设置在骨架23外周且与骨架23间隔设置，以在骨架23与盆架11之间形成有收纳空间234，折环部221位于收纳空间234内。Referring to FIGS. 2 and 5 , the frame 23 includes a first connecting portion 231 , a first sub-connecting portion 232 and a second sub-connecting portion 233 that are connected to both sides of the first connecting portion 231 and are oppositely disposed, and the first connecting portion 231 Connected to the second surface 2232 , the basin frame 11 is disposed on the outer periphery of the frame 23 and is spaced from the frame 23 to form a storage space 234 between the frame 23 and the basin frame 11 .
本发明通过将第一连接部231与第二面2232的一部分相连接，使得第一连接部231的上表面2311的覆盖面积小，对于金属材质的骨架23结构，有利于降低振动***2的质量。In the present invention, by connecting the first connecting part 231 with a part of the second surface 2232, the coverage area of the upper surface 2311 of the first connecting part 231 is small, and the structure of the metal frame 23 is beneficial to reduce the quality of the vibration system 2 .
请参阅图2、图3和图6，第二固定部224具有相互垂直且均与盆架11连接的第三子连接部224a和第四子连接部224b，第三子连接部224a具有朝向球顶21设置的第三面2241和背向球顶21设置的第四面2242，第四子连接部224b包括相背设置的第五面2243和第六面2244，盆架11具有环绕骨架23外周设置的本体部11a和凸出部11b，本体部11a具有顶面112、与顶面112相背设置的底面115、自顶面112的外周缘朝背离顶面112的方向弯折设置的侧面113和内表面114，顶面112与第四面2242相连接，侧面113与第六面2244相连接，内表面114与折环部221相连接。Please refer to FIG. 2 , FIG. 3 and FIG. 6 , the second fixing part 224 has a third sub-connecting part 224 a and a fourth sub-connecting part 224 b which are perpendicular to each other and are connected to the basin frame 11 . A third surface 2241 provided on the top 21 and a fourth surface 2242 provided facing away from the dome 21 , the fourth sub-connecting portion 224b includes a fifth surface 2243 and a sixth surface 2244 provided opposite to each other, and the basin frame 11 has an outer circumference surrounding the frame 23 . The main body portion 11a and the protruding portion 11b are provided. The main body portion 11a has a top surface 112, a bottom surface 115 disposed opposite to the top surface 112, and a side surface 113 bent from the outer periphery of the top surface 112 toward the direction away from the top surface 112. And the inner surface 114 , the top surface 112 is connected with the fourth surface 2242 , the side surface 113 is connected with the sixth surface 2244 , and the inner surface 114 is connected with the ring portion 221 .
请参阅图2，本发明中，振动***还包括第一柔性电路板26和第二柔性电路板27、间隔设置的第一辅助音膜28和第二辅助音膜29，，第一柔性电路板26包括焊盘26a、第一接线端262、第二接线端263，第二柔性电路板27包括焊盘27a,焊盘26a和焊盘27a可以为第一柔性电路板26和第二柔性电路板27与其他器件的连接提供平台。第一柔性电路板26和第二柔性电路板27包括相背设置的第七面2611和第八面2612，第七面2611与本体部11a靠近第一辅助音膜28的下表面贴合，第一柔性电路板26与第一子连接部232连接，第二柔性电路板27与第二子连接部233连接，第一辅助音膜28与第一柔性电路板26中远离骨架23的一侧连接，第二辅助音膜29与第二柔性电路板27中远离骨架23的一侧连接。Referring to FIG. 2, in the present invention, the vibration system further includes a first flexible circuit board 26 and a second flexible circuit board 27, a first auxiliary sound film 28 and a second auxiliary sound film 29 arranged at intervals, and the first flexible circuit board 26 includes a pad 26a, a first terminal 262, a second terminal 263, the second flexible circuit board 27 includes a pad 27a, and the pad 26a and the pad 27a can be the first flexible circuit board 26 and the second flexible circuit board 27 provides a platform for connections to other devices. The first flexible circuit board 26 and the second flexible circuit board 27 include a seventh surface 2611 and an eighth surface 2612 disposed opposite to each other. A flexible circuit board 26 is connected to the first sub-connecting portion 232 , the second flexible circuit board 27 is connected to the second sub-connecting portion 233 , and the first auxiliary sound film 28 is connected to the side of the first flexible circuit board 26 away from the frame 23 , the second auxiliary sound film 29 is connected to the side of the second flexible circuit board 27 away from the frame 23 .
本发明中，振动***2还包括垫圈24，主体部211、垫圈24和音圈25依次层叠设置。In the present invention, the vibration system 2 further includes a washer 24, and the main body portion 211, the washer 24 and the voice coil 25 are stacked in sequence.
请参阅图2，音圈25和垫圈24均为矩形环状结构，且垫圈24的形状和尺寸与音圈25的形状和尺寸相适配。垫圈24具有相背设置的第一上端面241和第一下端面242，音圈25具有音圈主体251、第一引线252、第二引线253和通孔254，第一引线252与焊盘26a电性连接，第二引线253与焊盘26a电性连接，使得音圈25和第一柔性电路板26电性连接。音圈主体251为封闭的环形结构，具有相背设置的第二上端面2511与第二下端面2512，第一引线252可以从音圈25的第二上端面2511引出至焊盘26a，且与焊盘26a的第一接线端262电性连接，第二引线253可以从音圈25的第二下端面2512引出至焊盘26a，且与焊盘26a的第二接线端263电性连接。Referring to FIG. 2 , the voice coil 25 and the washer 24 are both rectangular and annular structures, and the shape and size of the washer 24 are adapted to the shape and size of the voice coil 25 . The gasket 24 has a first upper end surface 241 and a first lower end surface 242 disposed opposite to each other, the voice coil 25 has a voice coil body 251, a first lead 252, a second lead 253 and a through hole 254, the first lead 252 and the pad 26a For electrical connection, the second lead 253 is electrically connected to the pad 26a, so that the voice coil 25 and the first flexible circuit board 26 are electrically connected. The voice coil body 251 is a closed annular structure, and has a second upper end surface 2511 and a second lower end surface 2512 arranged opposite to each other. The first terminal 262 of the pad 26a is electrically connected, and the second lead 253 can be led out from the second lower end surface 2512 of the voice coil 25 to the pad 26a, and is electrically connected to the second terminal 263 of the pad 26a.
本发明通过将音圈25和垫圈24设置为相同的矩形环状结构，且尺寸可以相配合，结构简单，不仅有利于提升零件尺寸精度，进而提升产品装配的一致性，而且垫圈24介于球顶21和音圈25之间，可以通过调整垫圈24的高度进而调节音圈25的高度位置。In the present invention, the voice coil 25 and the washer 24 are arranged in the same rectangular ring structure, and the sizes can be matched, and the structure is simple, which is not only conducive to improving the dimensional accuracy of the parts, thereby improving the consistency of product assembly, and the washer 24 is between the ball and the ball. Between the top 21 and the voice coil 25 , the height of the voice coil 25 can be adjusted by adjusting the height of the washer 24 .
本发明中，磁路***3包括磁轭31、主磁钢32、第一副磁钢33、第二副磁钢34、第三副磁钢35、第四副磁钢36和极芯37，磁轭31与底面115相连接且围设在音圈25的外侧，且磁轭31与第一辅助音膜28、第二辅助音膜29相互间隔设置。In the present invention, the magnetic circuit system 3 includes a magnetic yoke 31, a main magnetic steel 32, a first auxiliary magnetic steel 33, a second auxiliary magnetic steel 34, a third auxiliary magnetic steel 35, a fourth auxiliary magnetic steel 36 and a pole core 37, The yoke 31 is connected to the bottom surface 115 and is arranged around the outer side of the voice coil 25 , and the yoke 31 is spaced apart from the first auxiliary sound membrane 28 and the second auxiliary sound membrane 29 .
主磁钢32位于磁轭31内侧，第一副磁钢33、第二副磁钢34、第三副磁钢35和第四副磁钢36均间隔围设在主磁钢32的周缘，且第一副磁钢33、第二副磁钢34、第三副磁钢35均与主磁钢32之间具有磁间隙38，音圈25的一部分***至磁间隙38内。极芯37设置在音圈25的通孔254内，而且极芯37与主磁钢32相邻设置，极芯37用于将主磁钢32所产生的磁场导向音圈25。The main magnetic steel 32 is located inside the yoke 31, and the first auxiliary magnetic steel 33, the second auxiliary magnetic steel 34, the third auxiliary magnetic steel 35 and the fourth auxiliary magnetic steel 36 are all spaced around the periphery of the main magnetic steel 32, and The first secondary magnetic steel 33 , the second secondary magnetic steel 34 , and the third secondary magnetic steel 35 all have a magnetic gap 38 with the main magnetic steel 32 , and a part of the voice coil 25 is inserted into the magnetic gap 38 . The pole core 37 is disposed in the through hole 254 of the voice coil 25 , and the pole core 37 is disposed adjacent to the main magnet 32 , and the pole core 37 is used to guide the magnetic field generated by the main magnet 32 to the voice coil 25 .
主磁钢32可以为规则结构，比如主磁钢32可以为长方体结构，第一副磁钢33与主磁钢32的第一侧面相互间隔设置以形成第一间隙，第二副磁钢34与主磁钢32的第二侧面相互间隔设置以形成第二间隙，第三副磁钢35与主磁钢32的第三侧面相互间隔设置以形成第三间隙，第四副磁钢36与主磁钢32的第四侧面相互间隔设置以形成第四间隙，第四间隙、第三间隙、第二间隙和第一间隙相互连通以形成磁间隙38。其中，主磁钢32的第一侧面、第二侧面、第三侧面和第四侧面顺次连接。第一副磁钢33的结构与第二副磁钢34的结构可以不同，比如第一副磁钢33可以为规则的长方体结构，第二副磁钢34可以包括第一部和第二部，第二部设置在第一部的侧面上。第三副磁钢35的结构可以与第一副磁钢33的结构相同，第四副磁钢36的结构可以与第二副磁钢34的结构相同。在其他一些实施例中，第一副磁钢33、第二副磁钢34、第三副磁钢35和第四副磁钢36的结构也可以均相同。The main magnetic steel 32 can be a regular structure, for example, the main magnetic steel 32 can be a cuboid structure, the first auxiliary magnetic steel 33 and the first side of the main magnetic steel 32 are spaced apart from each other to form a first gap, and the second auxiliary magnetic steel 34 and The second side surfaces of the main magnetic steel 32 are spaced apart from each other to form a second gap, the third auxiliary magnetic steel 35 and the third side surface of the main magnetic steel 32 are spaced apart from each other to form a third gap, and the fourth auxiliary magnetic steel 36 and the main magnetic steel 36 are spaced apart from each other to form a third gap. The fourth sides of the steel 32 are spaced from each other to form a fourth gap, and the fourth gap, the third gap, the second gap, and the first gap communicate with each other to form a magnetic gap 38 . Wherein, the first side surface, the second side surface, the third side surface and the fourth side surface of the main magnet 32 are connected in sequence. The structure of the first auxiliary magnetic steel 33 may be different from that of the second auxiliary magnetic steel 34. For example, the first auxiliary magnetic steel 33 may be a regular cuboid structure, and the second auxiliary magnetic steel 34 may include a first part and a second part. The second part is provided on the side of the first part. The structure of the third secondary magnetic steel 35 may be the same as that of the first secondary magnetic steel 33 , and the structure of the fourth secondary magnetic steel 36 may be the same as that of the second secondary magnetic steel 34 . In some other embodiments, the structures of the first auxiliary magnetic steel 33 , the second auxiliary magnetic steel 34 , the third auxiliary magnetic steel 35 and the fourth auxiliary magnetic steel 36 may also be the same.
需要说明的是，主磁钢32的结构并不限于此，比如主磁钢32也可以为其他规则结构，或者主磁钢32也可以不规则结构。It should be noted that the structure of the main magnetic steel 32 is not limited to this. For example, the main magnetic steel 32 may also have other regular structures, or the main magnetic steel 32 may also have an irregular structure.
本发明中，固定***1还包括底板12，底板12盖设在主磁钢32、第一副磁钢33、第二副磁钢34、第三副磁钢35和第四副磁钢36中背离磁轭31的一侧以支撑主磁钢32、第一副磁钢33、第二副磁钢34、第三副磁钢35和第四副磁钢36。In the present invention, the fixing system 1 further includes a bottom plate 12 , and the bottom plate 12 is covered with the main magnetic steel 32 , the first auxiliary magnetic steel 33 , the second auxiliary magnetic steel 34 , the third auxiliary magnetic steel 35 and the fourth auxiliary magnetic steel 36 . The side facing away from the yoke 31 supports the main magnet 32 , the first secondary magnet 33 , the second secondary magnet 34 , the third secondary magnet 35 and the fourth secondary magnet 36 .
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。The above are only the embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these belong to the present invention. scope of protection.

Claims (10)

  1. 一种发声装置，包括盆架以及固接于所述盆架的振动***和磁路***，所述振动***包括振膜、骨架和驱动所述振膜振动的音圈，所述振膜包括依次层叠设置的球顶和主音膜，其特征在于，所述主音膜包括折环部、位于所述折环部内侧的第一固定部和位于所述折环部外侧的第二固定部，所述第一固定部具有朝向所述球顶的第一面和背向所述球顶的第二面，所述球顶包括主体部和自所述主体部延伸出的连接部，所述第一面全部与所述球顶的连接部连接，所述第二固定部与所述盆架连接，所述骨架包括第一连接部、连接于所述第一连接部两侧且相对设置的第一子连接部和第二子连接部，所述第一连接部与所述第二面相连接。A sounding device includes a basin frame, a vibration system and a magnetic circuit system fixed to the basin frame, the vibration system includes a vibrating membrane, a frame and a voice coil that drives the vibration membrane to vibrate, and the vibrating membrane includes sequentially The stacked dome and main sound membrane are characterized in that, the main sound membrane comprises a folded ring portion, a first fixed portion located inside the folded ring portion, and a second fixed portion located outside the folded ring portion, the The first fixing part has a first surface facing the spherical top and a second surface facing away from the spherical top, the spherical top includes a main body part and a connecting part extending from the main body part, the first surface All are connected with the connecting part of the dome, the second fixing part is connected with the basin frame, and the frame includes a first connecting part, a first sub-connecting part connected to both sides of the first connecting part and arranged opposite to each other. A connecting part and a second sub-connecting part, the first connecting part is connected with the second surface.
  2. 根据权利要求1所述的发声装置，其特征在于，所述盆架设置在所述骨架外周且与所述骨架间隔设置以在所述骨架与所述盆架之间形成收纳空间，所述折环部位于所述收纳空间内，所述主体部和所述连接部之间形成台阶部，所述第一固定部收容在所述台阶部内。The sounding device according to claim 1, wherein the basin frame is arranged on the outer periphery of the frame and is spaced apart from the frame to form a storage space between the frame and the basin frame, and the folding The ring portion is located in the storage space, a step portion is formed between the main body portion and the connection portion, and the first fixing portion is accommodated in the step portion.
  3. 根据权利要求1所述的发声装置，其特征在于，所述第二固定部具有相互垂直且均与所述盆架连接的第三子连接部和第四子连接部，所述第三子连接部具有朝向所述球顶设置的第三面和背向所述球顶设置的第四面，所述第四子连接部包括相背设置的第五面和第六面，所述盆架具有环绕所述骨架外周设置的本体部，所述本体部具有顶面和自所述顶面的外周缘朝背离所述顶面的方向弯折设置的侧面，所述顶面与所述第四面相连接，所述侧面与所述第六面相连接。The sounding device according to claim 1, wherein the second fixing part has a third sub-connecting part and a fourth sub-connecting part that are perpendicular to each other and are both connected to the basin frame, the third sub-connecting part The part has a third surface facing the dome and a fourth surface facing away from the dome, the fourth sub-connecting part includes a fifth surface and a sixth surface opposite to each other, and the basin frame has a body part arranged around the outer periphery of the frame, the body part has a top surface and a side surface bent from the outer periphery of the top surface in a direction away from the top surface, the top surface is opposite to the fourth surface connected, the side surface is connected with the sixth surface.
  4. 根据权利要求1所述的发声装置，其特征在于，所述振动***还包括相互间隔设置的第一柔性电路板和第二柔性电路板，所述第一柔性电路板与第一子连接部连接，所述第二柔性电路板与所述第二子连接部连接。The sound-emitting device according to claim 1, wherein the vibration system further comprises a first flexible circuit board and a second flexible circuit board spaced apart from each other, and the first flexible circuit board is connected to the first sub-connection part , the second flexible circuit board is connected with the second sub-connection part.
  5. 根据权利要求4所述的发声装置，其特征在于，所述振动***还包括间隔设置的第一辅助音膜和第二辅助音膜，所述第一辅助音膜与所述第一柔性电路板中远离所述骨架的一侧连接，所述第二辅助音膜与所述第二柔性电路板中远离所述骨架的一侧连接。The sound producing device according to claim 4, wherein the vibration system further comprises a first auxiliary sound film and a second auxiliary sound film arranged at intervals, the first auxiliary sound film and the first flexible circuit board The second auxiliary sound membrane is connected to the side of the second flexible circuit board away from the skeleton.
  6. 根据权利要求5所述的发声装置，其特征在于，所述振动***还包括垫圈，所述主体部、所述垫圈和所述音圈依次层叠设置。The sound generating device according to claim 5, wherein the vibration system further comprises a washer, and the main body portion, the washer and the voice coil are stacked in sequence.
  7. 根据权利要求6所述的发声装置，其特征在于，所述音圈和所述垫圈均为矩形环状结构，且所述垫圈的形状和尺寸与所述音圈的形状和尺寸相适配。The sound generating device according to claim 6, wherein the voice coil and the washer are both rectangular and annular structures, and the shape and size of the washer are adapted to the shape and size of the voice coil.
  8. 根据权利要求3所述的发声装置，其特征在于，所述本体部具有与所述顶面相背设置的底面，所述磁路***包括与所述底面连接的磁轭、位于所述磁轭内侧的主磁钢和间隔围设在所述主磁钢周缘的多个副磁钢，所述多个副磁钢均与所述主磁钢之间具有磁间隙，所述音圈的一部分悬置于所述磁间隙内。The sound generating device according to claim 3, wherein the body portion has a bottom surface disposed opposite to the top surface, and the magnetic circuit system comprises a magnetic yoke connected to the bottom surface and located inside the magnetic yoke The main magnetic steel and a plurality of auxiliary magnetic steels spaced around the periphery of the main magnetic steel, each of the plurality of auxiliary magnetic steels has a magnetic gap with the main magnetic steel, and a part of the voice coil is suspended within the magnetic gap.
  9. 根据权利要求8所述的发声装置，其特征在于，所述磁路***还包括层叠设置在主磁钢上的极芯，所述音圈具有通孔和围绕设置形成所述通孔的音圈本体，所述极芯容置在所述通孔内且位于所述主磁钢和所述球顶之间。The sound-generating device according to claim 8, wherein the magnetic circuit system further comprises a pole core stacked on the main magnet steel, the voice coil has a through hole and a voice coil arranged around the through hole to form the through hole the body, the pole core is accommodated in the through hole and located between the main magnet and the dome.
  10. 根据权利要求8所述的发声装置，其特征在于，所述固定***还包括底板，所述底板盖设在所述多个副磁钢中背离所述磁轭的一侧以支撑所述多个副磁钢和所述主磁钢。The sound generating device according to claim 8, wherein the fixing system further comprises a bottom plate, and the bottom plate cover is provided on a side of the plurality of secondary magnetic steels facing away from the magnetic yoke to support the plurality of secondary magnetic steels secondary magnet and the main magnet.
PCT/CN2020/142156 2020-12-18 2020-12-31 Sound production device WO2022126793A1 (en)

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