WO2021128047A1 - Dispositif de production de son - Google Patents

Dispositif de production de son Download PDF

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Publication number
WO2021128047A1
WO2021128047A1 PCT/CN2019/128201 CN2019128201W WO2021128047A1 WO 2021128047 A1 WO2021128047 A1 WO 2021128047A1 CN 2019128201 W CN2019128201 W CN 2019128201W WO 2021128047 A1 WO2021128047 A1 WO 2021128047A1
Authority
WO
WIPO (PCT)
Prior art keywords
wall
magnetic
diaphragm
magnetic bowl
fixed
Prior art date
Application number
PCT/CN2019/128201
Other languages
English (en)
Chinese (zh)
Inventor
邵涛
严绪东
顾小江
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)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, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Priority to PCT/CN2019/128201 priority Critical patent/WO2021128047A1/fr
Publication of WO2021128047A1 publication Critical patent/WO2021128047A1/fr

Links

Classifications

    • 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 utility model relates to the field of electro-acoustic conversion, in particular to a sound-producing device applied to electronic sound box products.
  • the sound device is also known as a speaker or a horn, which is used in a speaker to convert audio signals into sound for playback.
  • the related art sounding device includes a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system with a magnetic gap.
  • the magnetic circuit system drives the vibration system to vibrate and produce sound.
  • the vibration system includes a diaphragm and a plug.
  • a voice coil which is arranged in the magnetic gap and drives the diaphragm to vibrate and emit sound, an elastic support assembly fixed on the basin frame, and a skeleton for connecting the voice coil and the elastic support assembly.
  • the elastic support component is connected to the voice coil through the side wall of the frame, so that the elastic support component is indirectly connected to the voice coil, and the effect of suppressing the swing of the sounding device is limited.
  • the purpose of the utility model is to provide a sounding device that can effectively balance the amplitude, increase the stroke bearing limit, and has a better sounding effect.
  • the present invention provides a sound generating device, which includes a basin frame, a vibration system supported on the basin frame, and a magnetic circuit system that drives the vibration system to vibrate and produce sound, the magnetic circuit system having a magnetic gap
  • the vibration system includes a diaphragm, a voice coil inserted in the magnetic gap to drive the diaphragm to vibrate and produce sound, an elastic support assembly fixed to the basin frame and spaced around the magnetic circuit system, and a connection
  • the centering support piece includes a body portion fixed to the diaphragm, and a direction away from the diaphragm from the body portion Extends and is fixed to the first extension wall of the elastic support assembly and is bent in the direction of the magnetic circuit system from the first extension wall, extends into the magnetic gap and is fixed to the voice coil away from the A second extension wall on one side of the diaphragm, the first extension wall is arranged around the outer
  • the second extension wall includes at least two spaced apart and symmetrically arranged on one side of the voice coil.
  • the elastic support assembly includes an elastic member and an auxiliary diaphragm attached to a side of the elastic member away from the diaphragm;
  • the elastic member includes a first fixed arm fixed to the basin frame, and The first fixed arm is spaced apart from the second fixed arm and the elastic arm connecting the first fixed arm and the second fixed arm; the first extension wall is fixed to the second fixed arm close to the One side of the diaphragm.
  • the elastic member further includes a positioning plate extending from a side of the second fixed arm away from the elastic arm toward the magnetic circuit system, and the positioning plate is directly opposite to the second extending wall.
  • the positioning plate directly faces the second extension wall with a positioning hole penetrating through it, and the orthographic projection of the second extension wall on the positioning plate at least partially falls into the positioning hole.
  • the magnetic circuit system includes a first magnetic bowl, a magnetic steel unit accommodated and fixed in the first magnetic bowl, and a relief slot that penetrates the first magnetic bowl and matches the second extension wall;
  • the first magnetic bowl includes a first magnetic bowl bottom wall supported and fixed to the basin frame, and a first magnetic bowl side wall bent and extended from the first magnetic bowl bottom wall in a direction close to the diaphragm,
  • the magnetic steel unit is fixed to the bottom wall of the first magnetic bowl and is spaced from the side wall of the first magnetic bowl to form the magnetic gap;
  • the relief groove penetrates the side wall of the first magnetic bowl and extends along the vibration direction of the diaphragm
  • the first extension wall is arranged around the outer side of the magnetic circuit system and arranged at intervals, and the second extension wall extends into the magnetic gap through the relief groove.
  • the basin frame includes a bottom wall, an outer wall bent and extended from the periphery of the bottom wall, and an inner wall bent and extended from the bottom wall.
  • the outer wall is arranged around the inner wall and is spaced apart from each other. Having a through opening extending therethrough, the through opening extending along the vibration direction;
  • the bottom wall and the inner wall jointly enclose an accommodating space, the magnetic circuit system is at least partially located in the accommodating space, and the relief groove and the opening are arranged one by one directly opposite;
  • the first extension wall is ringed on the outer side of the inner wall and arranged at intervals, and the second extension wall sequentially extends into the magnetic gap through the through opening and the relief groove.
  • the magnetic circuit system further includes a second magnetic bowl covering the magnetic steel unit, and the second magnetic bowl is arranged directly opposite to the first magnetic bowl; the second magnetic bowl includes a second magnetic bowl.
  • the bottom wall of the magnetic bowl and the side wall of the second magnetic bowl, the bottom wall of the second magnetic bowl and the bottom wall of the first magnetic bowl are arranged opposite to each other, and the magnetic steel unit is sandwiched on the bottom wall of the first magnetic bowl
  • the side wall of the second magnetic bowl between the second magnetic bowl and the bottom wall of the second magnetic bowl is bent and extended from the bottom wall of the second magnetic bowl toward the bottom wall of the first magnetic bowl, and the relief groove also penetrates The side wall of the second magnetic bowl.
  • the diaphragm is arranged around the outer periphery of the bottom wall of the second magnetic bowl, and the diaphragm includes a vibrating portion, a folding ring portion bent and extending from the periphery of the vibrating portion, and The fold extends and is fixed to the fixing part of the basin frame.
  • the fixing portion of the diaphragm includes a first fixing portion and a second fixing portion; the first fixing portion is ring-shaped and fixed to the outer wall, and the second fixing portion is ring-shaped and fixed On the inner wall;
  • the folding ring portion includes a first folding ring portion having a ring shape and a second folding ring portion having a ring shape.
  • the first folding ring portion surrounds the second folding ring portion and is spaced apart from each other;
  • the side of the ring portion away from the second folding ring portion is connected to the first fixing portion, and the side of the second folding ring portion away from the first folding ring portion is connected to the second fixing portion;
  • the vibrating part has a ring shape, the vibrating part is located between the first folding ring part and the second folding ring part, and the outer side of the vibrating part is connected with the first folding ring part, the The inner side of the vibrating part is connected with the second folding ring part;
  • the body part is attached to a side of the vibrating part close to the magnetic circuit system.
  • the sound generating device further includes a pressing ring arranged on a side of the inner wall away from the bottom wall, and the pressing ring presses the second fixing part on the top end of the inner wall.
  • the second extension wall is a conductive metal sheet
  • the elastic member is an FPC
  • the voice coil is electrically connected to the elastic member via the second extension wall.
  • the vibration system includes a centering support piece connected to the diaphragm, the elastic support assembly, and the voice coil;
  • the centering support piece includes The main body portion of the diaphragm, the first extension wall extending from the main portion in a direction away from the diaphragm and fixed to the elastic support component, and the first extension wall from the first extension wall toward the magnetic circuit system
  • the direction bends and extends into the magnetic gap and is attached to the second extension wall fixed on the side of the voice coil away from the diaphragm.
  • the first extension wall is arranged around the outer circumference of the voice coil and is connected to the second extension wall of the voice coil. Voice coil interval setting.
  • the structure effectively balances the amplitude, improves the stroke bearing limit, and makes the sound output of the sound device better; on the other hand, the structure strengthens the lateral rigidity of the vibration system and effectively balances the lateral swing of the vibration system , Improve the reliability of sound-producing devices.
  • Figure 1 is a schematic diagram of the three-dimensional structure of the sound generating device of the present invention.
  • Figure 2 is an exploded schematic diagram of the three-dimensional structure of the sound generating device of the present invention.
  • Figure 3 is a cross-sectional view taken along line A-A in Figure 1;
  • Figure 4 is a schematic diagram of part of the three-dimensional structure of the utility model
  • Figure 5 is a schematic diagram of the three-dimensional structure of the centering support piece of the sound generating device of the present invention.
  • the present invention provides a sound generating device 100, which includes a basin frame 1, a vibration system supported on the basin frame 1, 2, a magnetic circuit system 3 that drives the vibration system 2 to vibrate and produce sound.
  • the magnetic circuit system 3 has a magnetic gap 30.
  • the basin frame 1 includes a bottom wall 11, an outer wall 12 bent and extended from the periphery of the bottom wall 11, and an inner wall 13 bent and extended from the bottom wall 11.
  • the outer walls 12 are arranged around the inner wall 13 and are spaced apart from each other.
  • the inner wall 13 is provided with a through opening 131 extending therethrough, the through opening 131 extends along the vibration direction, and the bottom wall 11 and the inner wall 13 jointly enclose a receiving space 10.
  • the vibration system 2 includes a diaphragm 21, a voice coil 22 inserted in the magnetic gap 30 to drive the diaphragm 21 to vibrate and produce sound, an elastic support assembly 23 fixed to the basin frame 1, and a connection with the vibration The membrane 21, the elastic support assembly 23 and the centering support piece 24 of the voice coil 22.
  • the diaphragm 21 includes a vibrating portion 211, a folding ring portion 212 bent and extending from the periphery of the vibrating portion 211, and a fixing device that is bent and extended by the folding ring portion 212 and fixed to the basin frame 1. ⁇ 213.
  • the fixing portion 213 includes a first fixing portion 2131 and a second fixing portion 2132; the first fixing portion 2131 is ring-shaped and fixed to the outer wall 12, and the second fixing portion 2132 is ring-shaped and It is fixed to the inner wall 13.
  • the folding ring portion 212 includes a first folding ring portion 2121 in a ring shape and a second folding ring portion 2122 in a ring shape.
  • the first folding ring portion 2121 surrounds the second folding ring portion 2122 and is spaced apart from each other;
  • the side of the first folding ring portion 2121 away from the second folding ring portion 2122 is connected to the first fixing portion 2131, and the side of the second folding ring portion 2122 away from the first folding ring portion 2121 Connected to the second fixing portion 2132.
  • the vibrating portion 211 has a ring shape, the vibrating portion 211 is located between the first folding ring portion 2121 and the second folding ring portion 2122, and the outer side of the vibrating portion 211 is connected to the first folding ring
  • the part 2121 is connected, and the inner side of the vibrating part 211 is connected with the second folding ring part 2122.
  • the elastic support assembly 23 is arranged around the inner wall 13, and the elastic support assembly 23 includes an elastic member 231 and an auxiliary diaphragm 232 attached to the side of the elastic member 231 away from the diaphragm 21; the elastic member 231 includes a first fixed arm 2311 fixed to the basin frame 1, a second fixed arm 2312 spaced apart from the first fixed arm 2311, and a connection connecting the first fixed arm 2311 and the second fixed arm 2312 Elastic arm 2313.
  • the elastic member 231 further includes a positioning plate 2314 extending from a side of the second fixed arm 2312 away from the elastic arm 2313 in the direction of the magnetic circuit system 3, and the positioning plate 2314 and The second extension wall 243 is directly opposite; the positioning plate 2314 is opposite to the second extension wall 243 and a positioning hole 2315 penetrates therethrough, and the orthographic projection of the second extension wall 243 on the positioning plate 2314 is at least partially Preferably, it completely falls into the positioning hole 2315.
  • the structure is used for positioning foolproof during assembly, effectively avoiding assembly errors, thereby improving production efficiency and product quality.
  • the centering support piece 24 includes a body portion 241 fixed to the diaphragm 21, a first extension bent and extended from the body portion 241 in a direction away from the diaphragm 21 and fixed to the elastic support component 23
  • the wall 242 and the second extension wall 242 bent in the direction of the magnetic circuit system 3 to extend into the magnetic gap 30 and fixed to the second side of the voice coil 22 away from the diaphragm 21
  • the first extension wall 242 is arranged around the outer circumference of the voice coil 22 and is spaced apart from the voice coil 22.
  • the centering support piece 24 is made of a metal material. Of course, it is not limited to this, and it can also be made of other conductive materials.
  • the second extension wall 243 is a conductive metal sheet
  • the elastic member 231 is an FPC
  • the voice coil 22 is electrically connected to the elastic member 231 via the second extension wall 243.
  • the body portion 241 is attached to the side of the vibrating portion 211 close to the magnetic circuit system 3; the first extension wall 242 is attached and fixed to the second fixed arm 2312 close to the diaphragm 21 side; the second extension wall 243 includes at least two spaced apart and symmetrically arranged on one side of the voice coil.
  • the vibration system 2 includes a centering support piece 24 that connects the diaphragm 21, the elastic support assembly 23, and the voice coil 22;
  • the centering support piece 24 includes a The main body portion 241 of the diaphragm 21, the first extension wall 242 extending from the main portion 241 in a direction away from the diaphragm 21 and fixed to the elastic support assembly 23, and the first extension wall 242 extending from the first extension wall 242
  • the magnetic circuit system is bent in the direction 3 to extend into the magnetic gap 30 and is attached and fixed to the second extension wall 243 on the side of the voice coil 22 away from the diaphragm 21.
  • this structure effectively balances the amplitude, improves the stroke bearing limit, and makes the sound output of the sound generating device 100 better; on the other hand, this structure strengthens the lateral rigidity of the vibration system 2 and effectively balances the vibration system 2 The lateral swing of, improves the reliability of the sound generating device 100.
  • the magnetic circuit system 3 is at least partially located in the accommodating space 10, and includes a first magnetic bowl 31, a magnetic steel unit 32 accommodating and fixing in the first magnetic bowl 31, penetrating the first magnetic bowl 31 and The recess 33 matching the second extension wall 243 and the second magnetic bowl 34 covering the magnetic steel unit 32.
  • the first magnetic bowl 31 includes a first magnetic bowl bottom wall 311 supported and fixed to the basin frame 1, and the first magnetic bowl bottom wall 311 is bent and extended toward the direction of the diaphragm 21.
  • the magnetic steel unit 32 is fixed to the bottom wall 311 of the first magnetic bowl and forms the magnetic gap 30 together with the side wall 312 of the first magnetic bowl.
  • the relief groove 33 penetrates the side wall 312 of the first magnetic bowl and extends along the vibration direction; the first extension wall 242 is arranged around the outer side of the magnetic circuit system 3 and is arranged at intervals, and the second extension The wall 243 extends into the magnetic gap 30 through the relief groove 33.
  • the second magnetic bowl 34 is arranged directly opposite to the first magnetic bowl 31; the second magnetic bowl 34 includes a second magnetic bowl bottom wall 341 and a second magnetic bowl side wall 342, and the second magnetic bowl
  • the bottom wall of the magnetic bowl 341 and the bottom wall of the first magnetic bowl 311 are arranged directly opposite each other, the diaphragm 21 is wound around the outer periphery of the bottom wall 341 of the second magnetic bowl, and the magnetic steel unit 32 is sandwiched between the Between the first magnetic bowl bottom wall 311 and the second magnetic bowl bottom wall 341, the second magnetic bowl side wall 342 approaches the first magnetic bowl bottom wall 311 from the second magnetic bowl bottom wall 341 Bending and extending in the direction, the relief groove 33 also penetrates the side wall 342 of the second magnetic bowl.
  • the relief groove 33 and the opening 131 of the inner wall 13 are arranged one by one; the first extension wall 242 is arranged on the outer side of the inner wall 13 and arranged at intervals, so The second extension wall 243 sequentially extends into the magnetic gap 30 through the opening 131 and the relief groove 33.
  • the pressure ring 4 is arranged on the inner wall 13 away from the bottom wall 11, and the pressure ring 4 presses the second fixing portion 2132 on the top end of the inner wall 13; this structure improves The overall rigidity of the sound emitting device is improved, and the stability of the sound emitting device is further improved.
  • the vibration system includes a centering support piece connected to the diaphragm, the elastic support assembly, and the voice coil;
  • the centering support piece includes The main body portion of the diaphragm, the first extension wall extending from the main portion in a direction away from the diaphragm and fixed to the elastic support component, and the first extension wall from the first extension wall toward the magnetic circuit system
  • the direction bends and extends into the magnetic gap and is attached to the second extension wall fixed on the side of the voice coil away from the diaphragm.
  • the first extension wall is arranged around the outer circumference of the voice coil and is connected to the second extension wall of the voice coil. Voice coil interval setting.
  • the structure effectively balances the amplitude, improves the stroke bearing limit, and makes the sound output of the sound device better; on the other hand, the structure strengthens the lateral rigidity of the vibration system and effectively balances the lateral swing of the vibration system , Improve the reliability of sound-producing devices.

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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

Le présent modèle d'utilité concerne un dispositif de production de son, comprenant un panier, un système de vibration supporté sur le panier, et un système de circuit magnétique qui entraîne le système de vibration pour vibrer et produire un son. Le système de circuit magnétique est pourvu d'un entrefer magnétique ; le système de vibration comprend une membrane, une bobine mobile insérée dans l'entrefer magnétique pour faire vibrer la membrane et produire un son, un ensemble de support élastique fixé à la corbeille et espacé de et disposé autour du système de circuit magnétique, et une pièce de support de centrage connectée à la membrane, à l'ensemble de support élastique et à la bobine mobile ; la pièce de support de centrage comprend une partie de corps fixée à la membrane, une première paroi d'extension s'étendant depuis la partie de corps dans une direction s'éloignant de la membrane et fixée à l'ensemble de support élastique, et une seconde paroi d'extension s'étendant vers le système de circuit magnétique depuis la première paroi d'extension jusqu'à l'intérieur de l'entrefer magnétique et fixée au côté de la bobine mobile s'éloignant de la membrane ; et la première paroi d'extension est disposée autour de la circonférence extérieure de la bobine mobile et est espacée de la bobine mobile. Par rapport aux arts apparentés, le dispositif de production de son de la présente invention peut équilibrer efficacement l'amplitude et augmenter la limite du support de palier.
PCT/CN2019/128201 2019-12-25 2019-12-25 Dispositif de production de son WO2021128047A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/128201 WO2021128047A1 (fr) 2019-12-25 2019-12-25 Dispositif de production de son

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/128201 WO2021128047A1 (fr) 2019-12-25 2019-12-25 Dispositif de production de son

Publications (1)

Publication Number Publication Date
WO2021128047A1 true WO2021128047A1 (fr) 2021-07-01

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Family Applications (1)

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PCT/CN2019/128201 WO2021128047A1 (fr) 2019-12-25 2019-12-25 Dispositif de production de son

Country Status (1)

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WO (1) WO2021128047A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170347201A1 (en) * 2016-05-26 2017-11-30 AAC Technologies Pte. Ltd. Miniature sounder
CN109218941A (zh) * 2018-09-21 2019-01-15 歌尔股份有限公司 发声装置以及电子设备
CN109982221A (zh) * 2019-04-30 2019-07-05 歌尔股份有限公司 发声装置以及电子产品
CN209390315U (zh) * 2018-12-31 2019-09-13 瑞声科技(新加坡)有限公司 发声器件

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170347201A1 (en) * 2016-05-26 2017-11-30 AAC Technologies Pte. Ltd. Miniature sounder
CN109218941A (zh) * 2018-09-21 2019-01-15 歌尔股份有限公司 发声装置以及电子设备
CN209390315U (zh) * 2018-12-31 2019-09-13 瑞声科技(新加坡)有限公司 发声器件
CN109982221A (zh) * 2019-04-30 2019-07-05 歌尔股份有限公司 发声装置以及电子产品

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