WO2022000780A1 - Dispositif de production de son - Google Patents

Dispositif de production de son Download PDF

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Publication number
WO2022000780A1
WO2022000780A1 PCT/CN2020/114322 CN2020114322W WO2022000780A1 WO 2022000780 A1 WO2022000780 A1 WO 2022000780A1 CN 2020114322 W CN2020114322 W CN 2020114322W WO 2022000780 A1 WO2022000780 A1 WO 2022000780A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
basin frame
vibration
vibrating
circuit system
Prior art date
Application number
PCT/CN2020/114322
Other languages
English (en)
Chinese (zh)
Inventor
梁平
赵彬
Original Assignee
瑞声声学科技(深圳)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 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022000780A1 publication Critical patent/WO2022000780A1/fr

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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
    • 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
    • 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
    • H04R9/025—Magnetic circuit

Definitions

  • the invention relates to the field of electro-acoustic conversion, in particular to a sound-emitting device used in electronic sound box products.
  • Sound-emitting devices also known as speakers or horns, are used in speakers to convert audio signals into sound for playback.
  • a related art sound-generating device includes a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system having a magnetic gap and driving the vibration system to vibrate.
  • the vibration system includes a diaphragm for vibrating and producing sound.
  • the rigidity of the diaphragm is relatively low, and some products have higher requirements on rigidity and distortion, and the diaphragm structure of the prior art cannot meet the requirements of product rigidity and distortion.
  • the object of the present invention is to provide a sounding device which can improve the swing problem and reduce the low frequency distortion.
  • the present invention provides a sound-generating device, which includes a vibration system and a magnetic circuit system having a magnetic gap and driving the vibration system to vibrate, the vibration system including a vibrating membrane for vibrating and sounding; the vibration system
  • the membrane includes a vibrating part, a folded ring part bent and extended outward from the periphery of the vibrating part, and a fixed part bent and extended from the side of the folded ring part away from the vibrating part;
  • the folded ring part is in the form of a belt A rectangular structure with rounded corners, the folded ring portion includes two oppositely arranged long-axis sides, two oppositely arranged short-axis sides, and a rounded portion connecting the adjacent long-axis sides and the short-axis sides;
  • the vibrating membrane further includes a fixing boss protruding from a side of the rounded portion away from the vibrating portion in a direction away from the magnetic circuit system, and the fixing boss is connected with the fixing portion.
  • the extension direction of the protrusion of the fixing boss is the same as the extension direction of the protrusion of the folded ring portion, and the height of the protrusion of the fixing boss is less than or equal to the height of the folded ring portion.
  • the bulging direction of the ring portion is parallel to the vibration direction of the diaphragm.
  • the projection of the fixed boss along the vibration direction of the diaphragm falls into the vibration part and the ring part simultaneously.
  • the diaphragm is made of any one of silica gel, rubber, polyetheretherketone and thermoplastic polyurethane elastomer rubber.
  • the vibrating membrane further includes a spherical top, the vibrating portion is provided with a through hole therethrough, and the spherical top is attached to a side of the vibrating portion away from the magnetic circuit system and completely covers the vibrating portion. through hole.
  • the sounding device further includes a basin frame, and the fixing portion and the magnetic circuit system are respectively fixed on opposite sides of the basin frame.
  • the fixing portion is connected to the top surface and the side surface of the basin frame.
  • the magnetic circuit system includes a magnetic yoke, a main magnetic steel fixed on the magnetic yoke, a secondary magnetic steel fixed on the magnetic yoke and spaced from the main magnetic steel to form the magnetic gap, and a secondary magnetic steel covered on the magnetic yoke.
  • the upper splint of the secondary magnet is not limited to that of the magnetic circuit system.
  • the pot frame includes a pot frame body and a protruding portion formed by a side of the pot frame body close to the magnetic circuit system protruding toward the magnetic circuit system
  • the upper clamp plate includes an upper clamp plate
  • the vibrating film further includes a fixed boss that protrudes and extends from the side of the rounded portion away from the vibrating portion to the direction away from the magnetic circuit system, so The fixing boss is connected with the fixing portion.
  • the setting of the fixed boss further increases the rigidity of the rounded portion, and makes the stiffness of the rounded portion approach that of the spherical top, thereby avoiding the need for The swaying problem when the diaphragm vibrates to produce sound also improves the problem of low-frequency distortion of the sound-emitting device.
  • Fig. 1 is the three-dimensional structure schematic diagram of the sound-emitting device of the present invention
  • FIG. 2 is an exploded view of a partial three-dimensional structure of the sound-emitting device of the present invention
  • Fig. 3 is the three-dimensional structure schematic diagram of the vibrating film of the present invention.
  • FIG. 4 is a schematic diagram of the assembly of the basin frame and the upper splint according to the present invention.
  • the present invention provides a sound-generating device 100 , which includes a vibration system 1 and a magnetic circuit system 2 having a magnetic gap 10 and driving the vibration system 1 to vibrate.
  • the vibration system 1 includes a diaphragm 11 for vibrating and producing sound;
  • the vibrating membrane 11 includes a vibrating portion 111 , a ring portion 112 that is bent and extended outward from the periphery of the vibrating portion 111 , and a fixed portion that is bent and extended from the side of the ring portion 112 away from the vibrating portion 111 .
  • the protruding direction of the ring portion 112 is parallel to the vibration direction of the diaphragm 11 .
  • the vibrating membrane 11 further includes a dome 115 , the vibrating portion 111 is provided with a through hole 1111 therethrough, and the dome 115 is attached to the vibrating portion 111 away from the magnetic circuit One side of the system 2 and completely cover the through hole 1111 .
  • the folded ring portion 112 has a rectangular structure with rounded corners. the rounded corners 1123 of the long-axis side 1121 and the short-axis side 1122.
  • the vibrating membrane 11 further includes a fixing boss 114 protruding from the side of the rounded portion 1123 away from the vibrating portion 111 and extending in a direction away from the magnetic circuit system 2 .
  • the stage 114 is connected to the fixing portion 113 .
  • the fixing bosses 114 include four, and each of the four fixing bosses 114 has four rounded portions 1123 protruding from the side away from the vibrating portion 111 .
  • the projection of the fixed boss 114 along the vibration direction of the diaphragm 11 falls into the vibration part 111 and the ring part 112 simultaneously.
  • the size, quantity and position of the fixing bosses 114 can be designed according to the actual requirements of the sound emitting device 100 .
  • the diaphragm 11 is made of any one of silicone, rubber, polyetheretherketone, and thermoplastic polyurethane elastomer rubber. Of course, it is not limited to this, and the diaphragm 11 can also be made of other polymer materials.
  • the sounding device 100 further includes a basin frame 3 , and the fixing portion 113 and the magnetic circuit system 2 are respectively fixed on opposite sides of the basin frame 3 .
  • the fixing portion 113 can also be fixed.
  • the structure of the basin frame 3 may not be required at this time, which saves costs; the fixing portion 113 is connected to the top surface and the side surface of the basin frame 3 .
  • the vibration system 1 further includes a voice coil 12 inserted in the magnetic gap 10 to drive the vibrating membrane 11 to vibrate and produce sound, and a voice coil 12 fixed to the basin frame 3 and electrically connected to the voice coil 12 .
  • Elastic member 13 .
  • the elastic member 13 is a flexible circuit board.
  • the vibration system 1 further includes an auxiliary diaphragm 14 attached to the side of the elastic member 13 away from the diaphragm.
  • the magnetic circuit system 2 includes a magnetic yoke 21 , a main magnetic steel 22 fixed to the magnetic yoke 21 , and a magnetic gap 10 formed by a main magnetic steel 22 fixed to the magnetic yoke 21 and spaced from the main magnetic steel 22 .
  • FIG. (4a) is an exploded schematic view of the basin frame 3 and the upper splint 24, and FIG. (4b) is a schematic diagram of the specific cooperation between the basin frame 3 and the upper splint 24, and the basin frame 3 includes the basin frame main body.
  • the basin frame 3 is rectangular, which includes The two short-axis sides 31a that are arranged oppositely and the two long-axis sides 31b that connect the two short-axis sides 31a and are oppositely arranged, the protrusions 32 include two and are respectively disposed on the two short-axis sides 21a , of course, the protruding portion 32 is not limited to this, and can also be provided on the long axis side 21b.
  • the upper splint 24 includes an upper splint body 241 , a groove portion 243 recessed from the upper splint 241 from the side of the upper splint 241 close to the basin frame 3 to the direction away from the basin frame 3 from the periphery of the upper splint body 241 , and Through the notch portion 242 recessed inward from the groove portion 243 , the secondary magnetic steel 23 is fixed to the part of the upper clamping plate main body 241 close to the magnetic circuit system 2 .
  • the groove portion 243 is provided corresponding to the short-axis side 31 a of the basin frame 3
  • the notch portion 242 is provided corresponding to the protruding portion 32 , but of course it is not limited thereto.
  • the main body portion 31 of the basin frame is partially accommodated in the groove portion 243 and the protruding portion 32 is inserted into the notch portion 242.
  • the setting of this structure enables the basin frame 3 and the upper plate 24 to be embedded in each other.
  • the connection is more firm; at the same time, because the main body part 31 of the basin frame is accommodated in the groove part 243 and the protruding part 32 is inserted into the notch part 242, the space of the basin frame 3 and the upper splint 24 is utilized.
  • the efficiency is higher, the layout is more reasonable, and the internal space of the sound-emitting device 100 is not occupied, so that the volume of the entire sound-emitting device 100 is smaller.
  • the two short axis sides 31 a of the basin frame 3 are partially accommodated in the groove portion 243 , and the protruding portion 32 is inserted into the notch portion 242 .
  • the vibrating film further includes a fixed boss that protrudes and extends from the side of the rounded portion away from the vibrating portion to the direction away from the magnetic circuit system, so The fixing boss is connected with the fixing portion.
  • the setting of the fixed boss further increases the rigidity of the rounded portion, and makes the stiffness of the rounded portion approach that of the spherical top, thereby avoiding the need for The swaying problem when the diaphragm vibrates to produce sound also improves the problem of low-frequency distortion of the sound-emitting device.

Landscapes

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

Abstract

La présente invention concerne un dispositif de production de son, comprenant un système de vibration et un système de circuit magnétique ayant un entrefer magnétique et entraînant le système de vibration à vibrer. Le système de vibration comprend une membrane destinée à vibrer pour produire un son ; la membrane comprend une partie de vibration, une partie d'entourage pliée et étendue vers l'extérieur à partir de la périphérie de la partie de vibration, et une partie de fixation pliée et étendue à partir du côté de la partie d'entourage éloigné de la partie de vibration ; la partie d'entourage a une structure rectangulaire ayant des coins arrondis ; la partie d'entourage comprend deux côtés d'axe long opposés, deux côtés d'axe court opposés, et des coins arrondis reliant les côtés d'axe long et les côtés d'axe court adjacents ; la membrane comprend en outre des parties saillantes de fixation faisant saillie et s'étendant, dans une direction s'éloignant du système de circuit magnétique, depuis le côté des parties de coin arrondi s'éloignant de la partie de vibration ; et les parties saillantes de fixation sont reliées à la partie de fixation. Par rapport à l'état de la technique associé, le dispositif de production de son de la présente invention améliore les problèmes de balancement et de distorsion basse fréquence pendant le fonctionnement.
PCT/CN2020/114322 2020-06-30 2020-09-10 Dispositif de production de son WO2022000780A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010624357.2A CN111935616B (zh) 2020-06-30 2020-06-30 发声器件
CN202010624357.2 2020-06-30

Publications (1)

Publication Number Publication Date
WO2022000780A1 true WO2022000780A1 (fr) 2022-01-06

Family

ID=73316980

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/114322 WO2022000780A1 (fr) 2020-06-30 2020-09-10 Dispositif de production de son

Country Status (2)

Country Link
CN (1) CN111935616B (fr)
WO (1) WO2022000780A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN213661911U (zh) * 2020-11-30 2021-07-09 瑞声科技(新加坡)有限公司 扬声器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0508596A1 (fr) * 1991-03-29 1992-10-14 Bose Corporation Transducteur électro-acoustique
CN101304622A (zh) * 2007-05-09 2008-11-12 富准精密工业(深圳)有限公司 电声装置的音膜结构及其制备方法
CN202111850U (zh) * 2011-05-24 2012-01-11 瑞声声学科技(常州)有限公司 发声器
CN208638590U (zh) * 2018-08-03 2019-03-22 瑞声科技(新加坡)有限公司 音膜及扬声器
CN109889963A (zh) * 2018-12-27 2019-06-14 瑞声科技(新加坡)有限公司 发声器件

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108900955B (zh) * 2018-06-27 2021-02-05 歌尔股份有限公司 振膜和扬声器
CN209390353U (zh) * 2018-12-30 2019-09-13 瑞声科技(新加坡)有限公司 发声装置
CN110191401A (zh) * 2019-05-09 2019-08-30 瑞声光电科技(常州)有限公司 振膜及发声器件
CN110830888A (zh) * 2019-11-12 2020-02-21 歌尔股份有限公司 一种振膜及包括其的发声器单体

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0508596A1 (fr) * 1991-03-29 1992-10-14 Bose Corporation Transducteur électro-acoustique
CN101304622A (zh) * 2007-05-09 2008-11-12 富准精密工业(深圳)有限公司 电声装置的音膜结构及其制备方法
CN202111850U (zh) * 2011-05-24 2012-01-11 瑞声声学科技(常州)有限公司 发声器
CN208638590U (zh) * 2018-08-03 2019-03-22 瑞声科技(新加坡)有限公司 音膜及扬声器
CN109889963A (zh) * 2018-12-27 2019-06-14 瑞声科技(新加坡)有限公司 发声器件

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Publication number Publication date
CN111935616B (zh) 2022-03-29
CN111935616A (zh) 2020-11-13

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