WO2022000778A1 - Dispositif de production de son - Google Patents

Dispositif de production de son Download PDF

Info

Publication number
WO2022000778A1
WO2022000778A1 PCT/CN2020/114320 CN2020114320W WO2022000778A1 WO 2022000778 A1 WO2022000778 A1 WO 2022000778A1 CN 2020114320 W CN2020114320 W CN 2020114320W WO 2022000778 A1 WO2022000778 A1 WO 2022000778A1
Authority
WO
WIPO (PCT)
Prior art keywords
peripheral wall
basin frame
inner peripheral
sound
fixed
Prior art date
Application number
PCT/CN2020/114320
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
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 WO2022000778A1 publication Critical patent/WO2022000778A1/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • 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
    • H04R9/06—Loudspeakers

Definitions

  • the utility model relates to the field of electro-acoustic conversion, in particular to a sound-emitting device used in electronic sound box products.
  • the sound-generating device of the related art includes a basin frame and a vibrating membrane fixed on the basin frame; the vibrating membrane includes a connecting portion, a folded ring portion extending outward from the periphery of the connecting portion, and a ring portion formed by the folded ring portion.
  • a fixing portion extending in the direction of the basin frame, and the fixing portion is glued and fixed to the basin frame.
  • the fixing parts are respectively glued and fixed to one end of the basin frame and the outer side surface connected to the end.
  • the basin frame is usually made of a steel ring.
  • the side width of the structure using the steel ring is narrower than that of the traditional basin frame, and the width limit of the steel ring is generally about 0.1 to 0.3 mm. Therefore, the use of the structural synchronization of the steel ring brings the risk that the diaphragm and the steel ring are not firmly glued.
  • the results of the reliability experiments show that the steel ring and the front face of the diaphragm are easy to open and separate, resulting in the collision of the diaphragm and the steel ring to generate noise, thereby causing the failure of the sounding device.
  • the purpose of the utility model is to provide a sound-emitting device with good reliability.
  • the present invention provides a sound-generating device, which includes a basin frame and a diaphragm fixed on the basin frame, the diaphragm includes a spherical top and a fold ring arranged around the spherical top, the The folded ring includes a connection part connected with the dome, a folded ring part bent and extended outward from the peripheral edge of the connection part, and a fixed part extended from the folded ring part to the direction of the basin frame.
  • the portion includes a top wall extending from the folded ring portion, an outer peripheral wall extending along an outer peripheral side of the basin frame from a side of the top wall away from the folded ring portion, and an outer peripheral wall extending from the top wall along the basin frame
  • the inner peripheral wall extending from the inner peripheral side of the inner peripheral wall, the inner peripheral wall and the outer peripheral wall are arranged at intervals, the top wall, the inner peripheral wall and the outer peripheral wall together form a fixing groove, and the basin frame is at least partially inserted into the
  • the fixing groove is abutted and fixed on the top wall, the basin frame is inserted into the outer periphery of the fixing groove portion and is bonded and fixed to the outer peripheral wall, and the basin frame is inserted into the inner periphery of the fixing groove portion and the inner periphery of the fixing groove.
  • the peripheral wall is glued and fixed.
  • the inner peripheral wall is a rectangular structure with rounded corners
  • the inner peripheral wall includes four rounded corner portions and four straight edge portions respectively connected with two adjacent rounded corner portions, the rounded corners
  • the thickness of the portion is greater than the thickness of the straight edge portion.
  • the thickness of the straight edge portion gradually decreases from the portion connected with the top wall to the direction away from the top wall.
  • the top wall is arranged perpendicular to the inner peripheral wall and the outer peripheral wall, respectively.
  • the pot frame is bonded and fixed with the inner peripheral wall and the outer peripheral wall by injecting glue at the same time.
  • the diaphragm is made of polymer material.
  • the diaphragm is made of silica gel or rubber.
  • the thickness of the basin frame ranges from 0.1 mm to 0.3 mm.
  • the basin frame is made of an annular steel ring.
  • the connecting portion is provided with a through hole therethrough, and the dome is attached and fixed to the connecting portion and covers the through hole.
  • the sound-emitting device of the present invention will set the fixed part of the diaphragm with a fixed groove, and the fixed groove is jointly surrounded by the top wall, the inner peripheral wall and the outer peripheral wall of the fixed part, and at least partially insert the basin frame.
  • the fixing groove is abutted on the top wall, and the outer periphery of the fixing groove part is inserted into the basin frame and fixed to the outer peripheral wall, and the inner periphery of the basin frame is inserted into the fixing groove part to be glued and fixed to the inner peripheral wall.
  • This structure effectively increases the adhesive contact surface between the diaphragm and the basin frame, improves the bonding strength, thereby reducing the risk of separation and opening of the adhesive surface of the diaphragm and the basin frame; in addition, from the perspective of mold structure design, this structure can reduce the size of the basin in the integral molding. Risk of glue spilling on the inside of the rack. To sum up the above, the sound-emitting device of the present invention has good reliability.
  • Fig. 1 is the stereoscopic 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 a sectional view along line A-A in Fig. 1;
  • Fig. 4 is the enlarged view of the part shown in C in Fig. 3;
  • Fig. 5 is a sectional view along line B-B in Fig. 1;
  • Fig. 6 is the enlarged view of the part shown in D in Fig. 5;
  • FIG. 7 is a schematic three-dimensional structure diagram of the vibrating membrane of the sound-emitting device of the present invention.
  • FIG. 8 is a schematic diagram of the three-dimensional assembly structure of the vibrating membrane and the basin frame of the sound-emitting device of the present invention.
  • the present invention provides a sound-emitting device 100, which includes a basin frame 1, a vibration system 2 and a magnetic circuit system 3 respectively supported on the basin frame 1, and the magnetic circuit system 3 drives the The vibration system 2 vibrates and emits sound.
  • the thickness of the basin frame 1 ranges from 0.1 mm to 0.3 mm.
  • the side width of the steel ring structure using this thickness range is narrower than that of the traditional basin frame structure, which is more beneficial to make the internal space of the sound generating device 100 larger.
  • the basin frame 1 is made of an annular steel ring. It is beneficial for the internal space in the sound generating device 100 to be larger, so as to realize larger internal components and magnetic circuits.
  • the vibration system 2 is fixed to the basin frame 1 .
  • the vibration system 2 includes a diaphragm 4 fixed to the basin frame 1 and a voice coil 5 that drives the diaphragm 4 to vibrate and produce sound.
  • the diaphragm 4 includes a dome 6 and a ring 7 arranged around the dome 6 .
  • the folded ring 7 includes a connection portion 71 connected to the dome 6 , a folded ring portion 72 bent and extended outward from the peripheral edge of the connection portion 71 , and a folded ring portion 72 to the basin frame 1 .
  • the fixed portion 73 extending in the direction.
  • the connecting portion 71 is provided with a through hole 710 therethrough, and the dome 6 is attached and fixed to the connecting portion 71 and covers the through hole 710 .
  • the spherical top 6 is beneficial to increase the rigidity of the connecting portion 71 .
  • the fixing portion 73 includes a top wall 731 extending from the ring portion 72 , an outer peripheral wall 732 extending along the outer peripheral side of the basin frame 1 from the side of the top wall 731 away from the ring portion 72 , and An inner peripheral wall 733 extending from the top wall 731 along the inner peripheral side of the basin frame 1 .
  • the top wall 731 is fixed to one end of the basin frame 1 . Specifically, the top wall 731 is fixed to the end of the basin frame 1 away from the magnetic circuit system 3 .
  • the outer peripheral wall 732 is glued and fixed to the outside of the basin frame 1 .
  • the inner peripheral wall 733 is glued and fixed to the inner side of the basin frame 1 .
  • the inner peripheral wall 733 is spaced apart from the outer peripheral wall 732 .
  • the top wall 731 , the inner peripheral wall 733 and the outer peripheral wall 732 together define a fixing groove 730 .
  • the basin frame 1 is at least partially inserted into the fixing groove 730 and abutted and fixed on the top wall 731 .
  • the outer periphery of the portion of the pot holder 1 inserted into the fixing groove 730 is bonded and fixed to the outer peripheral wall 732
  • the inner periphery of the portion of the pot holder 1 inserted into the fixing groove 730 is bonded and fixed to the inner peripheral wall 733 .
  • This structure effectively increases the gluing contact surface between the diaphragm 4 and the pot frame 1, improves the gluing strength, thereby reducing the risk of separation and opening of the diaphragm 4 and the gluing surface of the pot frame 1; in addition, from the perspective of mold structure design In other words, this structure can reduce the risk of glue spilling on the inner side of the basin frame 1 during the integral molding, so that the reliability of the sound-emitting device 100 is good.
  • the basin frame 1 is bonded and fixed to the inner peripheral wall 733 and the outer peripheral wall 732 by injecting glue at the same time. This process makes the assembly of the sound-emitting device 100 simpler, so that the reliability of the sound-emitting device 100 is good.
  • the inner peripheral wall 733 is a rectangular structure with rounded corners.
  • the inner peripheral wall 733 includes four rounded corner portions 7331 and four straight edge portions 7332 respectively connected with two adjacent rounded corner portions 7331 .
  • the thickness of the rounded portion 7331 is greater than the thickness of the straight edge portion 7332 .
  • the overall thickened structure of the rounded portion 7331 can increase the stiffness of the diaphragm 4, thereby increasing the stiffness of the sound-generating device 100 and improving the performance of the sound-generating device 100; and simultaneously reducing the vibration
  • the membrane 4 has a risk of membrane rupture, thereby improving the reliability of the sound-emitting device 100 .
  • the components and magnetic circuits inside the sound-emitting device 100 are made larger.
  • the thickness of the straight edge portion 7332 gradually decreases from the portion connecting with the top wall 731 to the direction away from the top wall 731 .
  • the straight edge portion 7332 is designed in an inverted right triangle shape.
  • the top wall 731 is arranged perpendicular to the inner peripheral wall 733 and the outer peripheral wall 732 respectively.
  • This structure makes the inner peripheral wall 733 and the outer peripheral wall 732 parallel to each other, so that the basin frame 1 can be easily inserted into the fixing groove 730, and it is convenient for the subsequent adjustment of the inner peripheral wall 733 and the outer peripheral wall 732.
  • the opposite sides of the portion of the basin frame 1 inserted into the fixing groove 730 are glued and fixed.
  • the diaphragm 4 is made of a polymer material. Specifically, the diaphragm 4 is made of silicone or rubber. The use of this material for the diaphragm 4 not only ensures the acoustic performance, but also facilitates processing and assembly.
  • the magnetic circuit system 3 includes a magnetic yoke 31 fixed to the basin frame 1 and disposed on the opposite side of the upper diaphragm 4 , and a main magnetic steel 32 and a secondary magnetic steel 33 respectively fixed to the magnetic yoke 31 .
  • the secondary magnetic steel 33 is disposed on opposite sides of the main magnetic steel 32 and is spaced from the main magnetic steel 32 to form the magnetic gap 30 .
  • the voice coil 5 is inserted into the magnetic gap 30 , and the magnetic circuit system 3 drives the voice coil 5 through the magnetic gap 30 to drive the diaphragm 4 to vibrate and produce sound.
  • the magnetic circuit system 3 further includes a ring-shaped clamping plate 34 stacked on the secondary magnetic steel 33 .
  • the clamping plate 34 is supported and fixed to the yoke 31 .
  • One end of the basin frame 1 away from the diaphragm 4 is fixed to the splint 34 . This structure enables the magnetic circuit system 3 to be fixed to the basin frame 1 .
  • the sound-emitting device of the present invention will set the fixed part of the diaphragm with a fixed groove, and the fixed groove is jointly surrounded by the top wall, the inner peripheral wall and the outer peripheral wall of the fixed part, and at least partially insert the basin frame.
  • the fixing groove is abutted on the top wall, and the outer periphery of the fixing groove part is inserted into the basin frame and fixed to the outer peripheral wall, and the inner periphery of the basin frame is inserted into the fixing groove part to be glued and fixed to the inner peripheral wall.
  • This structure effectively increases the adhesive contact surface between the diaphragm and the basin frame, improves the bonding strength, thereby reducing the risk of separation and opening of the adhesive surface of the diaphragm and the basin frame; in addition, from the perspective of mold structure design, this structure can reduce the size of the basin in the integral molding. Risk of glue spilling on the inside of the rack. To sum up the above, the sound-emitting device of the present invention has good reliability.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

L'invention concerne un dispositif de production de son. Le dispositif de production de sons comprend un cadre et une membrane vibrante fixée sur le cadre. La membrane vibrante comprend un dôme et un anneau de pliage disposé autour du dôme. L'anneau pliant comprend une partie de connexion reliée au dôme, une partie d'anneau pliant, qui est pliée et s'étend vers l'extérieur depuis la périphérie de la partie de connexion, et une partie de fixation, qui s'étend vers le cadre depuis la partie d'anneau pliant. La partie de fixation comprend une paroi supérieure s'étendant depuis la partie d'anneau de pliage, et une paroi périphérique extérieure s'étendant depuis un côté de la paroi supérieure qui est éloigné de la partie d'anneau de pliage le long du côté périphérique extérieur du cadre ; et la partie de fixation comprend en outre une paroi périphérique intérieure s'étendant depuis la paroi supérieure le long du côté périphérique intérieur du cadre, la paroi périphérique intérieure et la paroi périphérique extérieure étant disposées de manière espacée. Une fente de fixation est définie conjointement par la paroi supérieure, la paroi périphérique intérieure et la paroi périphérique extérieure, au moins une partie du cadre est insérée dans la fente de fixation et vient en butée contre et est fixée à la paroi supérieure, la périphérie de la partie du cadre insérée dans la fente de fixation est collée et fixée à la paroi périphérique extérieure, et la périphérie intérieure de la partie du cadre insérée dans la fente de fixation est collée et fixée à la paroi périphérique intérieure. Par rapport à l'art antérieur, le dispositif de production sonore de la présente invention présente une bonne fiabilité.
PCT/CN2020/114320 2020-06-30 2020-09-10 Dispositif de production de son WO2022000778A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202021265039.3U CN212811995U (zh) 2020-06-30 2020-06-30 发声器件
CN202021265039.3 2020-06-30

Publications (1)

Publication Number Publication Date
WO2022000778A1 true WO2022000778A1 (fr) 2022-01-06

Family

ID=75099256

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Application Number Title Priority Date Filing Date
PCT/CN2020/114320 WO2022000778A1 (fr) 2020-06-30 2020-09-10 Dispositif de production de son

Country Status (2)

Country Link
CN (1) CN212811995U (fr)
WO (1) WO2022000778A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113727259B (zh) * 2021-08-30 2024-03-08 歌尔股份有限公司 发声装置和电子设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050281430A1 (en) * 2004-03-19 2005-12-22 Tomoyuki Watanabe Speaker device
CN104581564A (zh) * 2014-12-24 2015-04-29 歌尔声学股份有限公司 微型扬声器
CN208798210U (zh) * 2018-08-24 2019-04-26 瑞声科技(新加坡)有限公司 扬声器
CN208924483U (zh) * 2018-08-06 2019-05-31 瑞声科技(新加坡)有限公司 扬声器
CN109862483A (zh) * 2018-12-29 2019-06-07 瑞声声学科技(深圳)有限公司 一种扬声器
CN209390307U (zh) * 2018-12-30 2019-09-13 瑞声科技(新加坡)有限公司 音膜及采用该音膜的扬声器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050281430A1 (en) * 2004-03-19 2005-12-22 Tomoyuki Watanabe Speaker device
CN104581564A (zh) * 2014-12-24 2015-04-29 歌尔声学股份有限公司 微型扬声器
CN208924483U (zh) * 2018-08-06 2019-05-31 瑞声科技(新加坡)有限公司 扬声器
CN208798210U (zh) * 2018-08-24 2019-04-26 瑞声科技(新加坡)有限公司 扬声器
CN109862483A (zh) * 2018-12-29 2019-06-07 瑞声声学科技(深圳)有限公司 一种扬声器
CN209390307U (zh) * 2018-12-30 2019-09-13 瑞声科技(新加坡)有限公司 音膜及采用该音膜的扬声器

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