WO2021168935A1 - Dispositif de production de son - Google Patents

Dispositif de production de son Download PDF

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Publication number
WO2021168935A1
WO2021168935A1 PCT/CN2020/080100 CN2020080100W WO2021168935A1 WO 2021168935 A1 WO2021168935 A1 WO 2021168935A1 CN 2020080100 W CN2020080100 W CN 2020080100W WO 2021168935 A1 WO2021168935 A1 WO 2021168935A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic
fixed
diaphragm
voice coil
basin frame
Prior art date
Application number
PCT/CN2020/080100
Other languages
English (en)
Chinese (zh)
Inventor
严绪东
邵涛
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
Publication of WO2021168935A1 publication Critical patent/WO2021168935A1/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details

Definitions

  • the invention 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 sound 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 The diaphragm of the basin frame and a voice coil fixed to the diaphragm and inserted into the magnetic gap to drive the diaphragm to vibrate and produce sound.
  • the lower end of the voice coil is prone to swing during the vibration process, which affects the acoustic performance.
  • the voice coil wire has the risk of vibration and disconnection, which affects the reliability of the sounding device.
  • the purpose of the present invention is to provide a sound device with simple structure, good reliability and excellent acoustic performance.
  • the present invention provides a sound emitting device, the sound emitting device includes a basin frame, a vibration system and a voice coil assembly respectively fixed to the basin frame;
  • the vibration system includes a diaphragm fixed to the basin frame , A magnetic component that drives the diaphragm to vibrate and emit sound and has a magnetic gap, and an auxiliary diaphragm that is arranged opposite to the diaphragm and elastically supports the magnetic component, and the voice coil component is fixed to the basin frame away from the One side of the diaphragm is at least partially inserted into the magnetic gap.
  • the magnetic component includes a magnetic bowl fixed on the side of the diaphragm close to the voice coil component with an opening facing the voice coil component, and a magnetic steel fixed in the magnetic bowl, the magnetic bowl and The magnetic steel is spaced to form the magnetic gap, one side of the auxiliary diaphragm is fixed to the frame, and the other side is fixed to the end of the magnetic bowl away from the diaphragm.
  • the auxiliary diaphragm is ring-shaped and arranged around the magnetic bowl.
  • the magnetic bowl includes a bottom wall fixed to the diaphragm, a side wall bent and extended from the periphery of the bottom wall in a direction away from the diaphragm, and a side wall away from the bottom wall by the side wall.
  • One end of the supporting wall is bent and extended toward the direction of the basin frame, and the auxiliary diaphragm is fixed to the supporting wall.
  • the diaphragm includes a ring-shaped folding ring portion, a first fixing portion bent and extending from the outer periphery of the folding ring portion and fixed to the basin frame, and a first fixing portion formed by the inner periphery of the folding ring portion.
  • the second fixing portion extending from the side bending and the dome cover fixed to the second fixing portion are provided, and the bottom wall is fixed to the dome.
  • the magnetic component further includes a pole core attached to a side of the magnetic steel away from the diaphragm.
  • the sound emitting device further includes a bottom plate fixed to an end of the basin frame away from the diaphragm, and the voice coil assembly includes a skeleton fixed to the bottom plate and extending toward the magnetic gap, and a frame around the frame. A voice coil close to one end of the magnetic gap, and the voice coil is suspended in the magnetic gap by the bobbin.
  • the voice coil assembly further includes a voice coil lead that is electrically connected to the voice coil, and the voice coil lead extends from the voice coil to the bottom plate along the skeleton, and extends from the voice coil to the bottom plate. To the outside of the basin frame.
  • the frame is provided with a through hole extending through it along its radial direction.
  • the sound device of the present invention fixes structures such as magnetic bowls, magnetic steel, etc. to the diaphragm and forms a vibration system together with the diaphragm, and fixes the voice coil assembly to the frame to drive the vibration system to vibrate and produce sound.
  • the sound device is simple in structure and easy to assemble; the auxiliary diaphragm is set to connect the magnetic bowl and the basin frame, effectively suppressing the vibration of the vibration system during vibration, and improving the vibro-acoustic performance.
  • the auxiliary diaphragm makes full use of the space in the basin frame.
  • Fig. 1 is a schematic diagram of the three-dimensional structure of the sound generating device of the present invention
  • FIG. 2 is an exploded schematic diagram of a part of the three-dimensional structure of the sound generating device of the present invention
  • Fig. 3 is a cross-sectional view taken along the line A-A in Fig. 1.
  • the present invention provides a sound generating device 100, which includes a basin frame 1 and a vibration system 2 and a voice coil assembly 3 fixed to the basin frame 1 respectively.
  • the sounding device 100 includes a bottom plate 11 fixed to the bottom end of the basin frame 1, the basin frame 1 includes a first side plate 12 extending vertically from the periphery of the bottom plate 11, and a first side plate 12 away from the bottom plate. A second side plate 13 extending obliquely outward at one end of the bottom plate 11.
  • the vibration system 2 includes a diaphragm 21 fixed to the end of the basin frame 1 away from the bottom plate 11, a magnetic component 22 that drives the diaphragm 21 to vibrate and emit sound and has a magnetic gap 20, and a magnetic component 22 that elastically supports the magnetic component 22 Auxiliary diaphragm 23.
  • the magnetic component 22 includes a magnetic bowl 221 fixed on the side of the diaphragm 21 close to the voice coil component 3 and opening towards the voice coil component 3, a magnetic steel 222 fixed in the magnetic bowl 221, and a sticker A pole core 223 located at one end of the magnetic steel 222 away from the diaphragm 21, the magnetic bowl 221 is spaced from the magnetic steel 222 to form the magnetic gap 20, and one side of the auxiliary diaphragm 23 is fixed to the basin frame 1. The other side is fixed to the end of the magnetic bowl 221 away from the diaphragm 21.
  • the voice coil assembly 3 drives the vibration system 2 to vibrate and produce sound, that is, the voice coil assembly 3 As a driving system, it does not participate in vibration, avoiding the risk of disconnection of the voice coil, and effectively improving the reliability of the sound generating device 100.
  • the diaphragm 21 includes a ring-shaped folding ring portion 211, a first fixing portion 212 that is bent and extended from the outer peripheral side of the folding ring portion 211 and fixed to the basin frame 1, and is formed by the folding ring portion 211
  • a second fixing portion 213 bent and extended on the inner peripheral side of the, and a dome 214 fixed to the second fixing portion 213 is covered.
  • the first fixing portion 212 of the diaphragm 21 is fixed to an end of the second side plate 13 away from the bottom plate 11.
  • the magnetic bowl 221 is fixed on the side of the diaphragm 21 close to the voice coil assembly 3 and has an opening facing the voice coil assembly 3.
  • the side wall 2212 with the peripheral edge of 2211 bent in a direction away from the diaphragm 21 and a support wall 2213 with an end away from the bottom wall 2211 of the side wall 2212 bent in a direction closer to the basin frame 1,
  • the bottom wall 2211 is fixed to the dome 214.
  • the auxiliary diaphragm 23 is arranged opposite to the diaphragm 21 and located outside the magnetic bowl 221, and the auxiliary diaphragm 23 elastically supports the magnetic bowl 221. Specifically, one side of the auxiliary diaphragm 23 is fixed to the basin frame 1, and the other side thereof is fixed to an end of the magnetic bowl 221 away from the diaphragm 21.
  • the auxiliary diaphragm 23 is fixedly connected to the magnetic bowl 221 to suppress the swing of the entire vibration system 2 when the vibration system 2 vibrates.
  • the auxiliary diaphragm 23 has a ring shape and is arranged around the magnetic bowl 221, and one side of the auxiliary diaphragm 23 is fixed to an end of the first side plate 12 away from the bottom plate 11.
  • the other side of the auxiliary diaphragm 23 is fixed to the supporting wall 223; that is, the auxiliary diaphragm 23 does not affect the total height of the entire sound emitting device 100, and the ultra-thin design of the sound emitting device can be realized.
  • the pole core 223 is attached to the side of the magnetic steel 222 away from the diaphragm 21.
  • the voice coil assembly 3 is fixed on the side of the basin frame 1 away from the diaphragm 21, that is, fixed to the bottom plate 11, and is at least partially inserted into the magnetic gap 20.
  • the voice coil assembly 3 includes a bobbin 31 fixed to the bottom plate 11 and extending toward the magnetic gap 20, and a voice coil 32 wound around an end of the bobbin 31 close to the magnetic gap 20.
  • the voice coil 32 The skeleton 31 is suspended in the magnetic gap 20.
  • the skeleton 31 is provided with a through hole 310 penetrating through it along its radial direction, and the through hole 310 is used for pressure relief to balance the sound pressure inside the magnetic bowl 221 and outside the magnetic bowl 221 during the vibration process of the vibration system 2. Improve acoustic performance.
  • the voice coil assembly 3 further includes a voice coil lead 33 electrically connected to the voice coil 32, and the voice coil lead 33 extends from the voice coil 32 along the frame 31 to the bottom plate 11, It is attached to the bottom plate 11 and extends to the outside of the basin frame 1 for introducing external electrical signals to the voice coil 32. Since the voice coil assembly 3 does not participate in vibration, the breakage of the voice coil lead 33 is avoided, and the reliability is effectively improved.
  • the sound device of the present invention fixes structures such as magnetic bowls, magnetic steel, etc. to the diaphragm and forms a vibration system together with the diaphragm, and fixes the voice coil assembly to the frame to drive the vibration system to vibrate and produce sound.
  • the sound device is simple in structure and easy to assemble; the auxiliary diaphragm is set to connect the magnetic bowl and the basin frame, effectively suppressing the vibration of the vibration system during vibration, and improving the vibro-acoustic performance.
  • the auxiliary diaphragm makes full use of the space in the basin frame.

Landscapes

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

Abstract

L'invention concerne un dispositif de production de son. Le dispositif de production de son comprend un cadre, et un système de vibration et un ensemble de bobine mobile, qui sont respectivement fixés sur le cadre, dans lequel le système de vibration comprend une membrane vibrante fixée sur le cadre, un ensemble de force magnétique, qui entraîne la membrane vibrante pour vibrer et produire un son et a un entrefer magnétique, et une membrane vibrante auxiliaire, qui est disposée en face de la membrane vibrante à un intervalle et supporte élastiquement l'ensemble de force magnétique ; et l'ensemble bobine mobile est fixé sur un côté du cadre qui est éloigné de la membrane vibrante, et est au moins partiellement inséré dans l'entrefer magnétique. Par rapport à l'art apparenté, le dispositif de production sonore de la présente invention est simple en termes de structure, présente une bonne fiabilité et une excellente performance acoustique.
PCT/CN2020/080100 2020-02-25 2020-03-19 Dispositif de production de son WO2021168935A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010117788.X 2020-02-25
CN202010117788.XA CN111263281A (zh) 2020-02-25 2020-02-25 发声器件

Publications (1)

Publication Number Publication Date
WO2021168935A1 true WO2021168935A1 (fr) 2021-09-02

Family

ID=70952749

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/080100 WO2021168935A1 (fr) 2020-02-25 2020-03-19 Dispositif de production de son

Country Status (2)

Country Link
CN (1) CN111263281A (fr)
WO (1) WO2021168935A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114630248A (zh) * 2022-03-21 2022-06-14 维沃移动通信有限公司 声学模组及电子设备

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN213938312U (zh) * 2020-07-06 2021-08-10 瑞声科技(新加坡)有限公司 发声器件
CN213462308U (zh) * 2020-07-06 2021-06-15 瑞声科技(新加坡)有限公司 扬声器
CN213403488U (zh) * 2020-09-04 2021-06-08 瑞声光电科技(常州)有限公司 发声器件

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2622975Y (zh) * 2002-09-29 2004-06-30 周国平 壳体振动式扬声器
CN106658312A (zh) * 2017-02-08 2017-05-10 歌尔股份有限公司 扬声器
US9674603B1 (en) * 2016-02-24 2017-06-06 PAL Acoustics Technology Ltd. Coaxial speaker
CN109362002A (zh) * 2018-09-30 2019-02-19 瑞声科技(新加坡)有限公司 发声器件
CN209390313U (zh) * 2018-12-29 2019-09-13 瑞声科技(新加坡)有限公司 发声器件

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204334924U (zh) * 2014-12-16 2015-05-13 天津中环真美声学技术有限公司 一种2.5寸动磁扬声器
CN104936108B (zh) * 2015-06-11 2018-06-26 深圳市喜声多媒体技术有限公司 一种骨传导扬声器装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2622975Y (zh) * 2002-09-29 2004-06-30 周国平 壳体振动式扬声器
US9674603B1 (en) * 2016-02-24 2017-06-06 PAL Acoustics Technology Ltd. Coaxial speaker
CN106658312A (zh) * 2017-02-08 2017-05-10 歌尔股份有限公司 扬声器
CN109362002A (zh) * 2018-09-30 2019-02-19 瑞声科技(新加坡)有限公司 发声器件
CN209390313U (zh) * 2018-12-29 2019-09-13 瑞声科技(新加坡)有限公司 发声器件

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114630248A (zh) * 2022-03-21 2022-06-14 维沃移动通信有限公司 声学模组及电子设备

Also Published As

Publication number Publication date
CN111263281A (zh) 2020-06-09

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