WO2022006988A1 - Dispositif de production de son et appareil électronique le comprenant - Google Patents

Dispositif de production de son et appareil électronique le comprenant Download PDF

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Publication number
WO2022006988A1
WO2022006988A1 PCT/CN2020/102737 CN2020102737W WO2022006988A1 WO 2022006988 A1 WO2022006988 A1 WO 2022006988A1 CN 2020102737 W CN2020102737 W CN 2020102737W WO 2022006988 A1 WO2022006988 A1 WO 2022006988A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
fixed
vibration
diaphragm
basin frame
Prior art date
Application number
PCT/CN2020/102737
Other languages
English (en)
Chinese (zh)
Inventor
肖波
令狐荣林
孔晨亮
章统
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 WO2022006988A1 publication Critical patent/WO2022006988A1/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
    • 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 present application relates to the field of electro-acoustic conversion, and in particular, to a sound-generating device and an electronic device having the same.
  • Portable smart mobile devices enable users to obtain a large amount of information anywhere through the interaction of text, images, and sounds, which greatly facilitates users' lives.
  • sound-emitting devices form an important part of portable smart mobile devices.
  • the sound-generating device in the prior art includes a diaphragm and a basin frame.
  • the basin frame is used for accommodating and fixing the components required for sound generation.
  • the diaphragm is arranged on the basin frame and can vibrate and emit sound under the excitation of external conditions.
  • the sound-emitting device in the prior art is provided with a sealing structure on the outer wall of the basin frame, but the sealing structure and the diaphragm are integrally formed, so that the sound-emitting device cannot take into account the acoustic performance and waterproof performance, and it is more difficult to meet different degrees of waterproofing. need.
  • the purpose of the present application is to provide a sound-emitting device and an electronic device having the same, which are used to solve the problem that the sound-emitting device in the prior art cannot take both waterproof performance and product performance into consideration.
  • the sound-generating device includes a basin frame, and a vibration system and a magnetic circuit system fixed on the basin frame, the magnetic circuit system drives the vibration system to vibrate and sound, and the vibration system includes a diaphragm fixed on the basin frame and a fixed A voice coil on the side of the vibrating membrane close to the magnetic circuit system;
  • the vibrating membrane includes a vibrating part and a fixing part, the vibrating part is suspended on the basin frame, the fixing part extends from the edge of the vibrating part and surrounds the vibrating part, and the basin frame is opposite to the vibrating membrane.
  • the set top surface and the outer side wall extending from the edge of the top surface to the direction away from the vibrating membrane, the fixing part is facing and fixed to the top surface;
  • the fixed part is connected to the side of the fixed part away from the vibration part and integrated with the fixed part by two-color injection molding; the hardness of the fixed part is greater than that of the vibration part and less than that of the annular support.
  • At least one of the vibrating part and the fixing part is a piece of silica gel.
  • annular support is a steel ring.
  • the vibrating part includes a connecting part spaced from the fixing part and a fold ring connected between the fixing part and the connecting part, and the fold ring is in an arc shape that protrudes away from the magnetic circuit system;
  • the dome on the side away from the folding ring, the connecting part is arranged around the periphery of the dome.
  • the vibration system also includes a skeleton connected between the diaphragm and the voice coil, the skeleton includes an annular body and an extension portion bent and extended from the annular body toward the direction of the magnetic circuit system, and the voice coil is fixed on a portion of the extension portion away from the annular body. side, the annular body is connected between the connecting portion and the dome.
  • the dome is fixed on the side of the annular main body away from the extension part, and the annular main body is correspondingly recessed toward the magnetic circuit system to form an escape groove, and the periphery of the dome is correspondingly installed in the escape groove.
  • the magnetic circuit system includes a magnet part fixed on the basin frame and a magnetic bowl installed on the side of the magnet part away from the diaphragm, the magnet part is sandwiched between the magnetic bowl and the basin frame, the magnet part has a magnetic gap, and the voice coil at least Parts are suspended within the magnetic gap.
  • the vibration system further includes a centering support piece facing the folding ring and arranged at intervals
  • the frame further includes a support portion that is bent and extended from the annular main body in a direction away from the vibrating membrane, so The support part and the extension part are arranged at intervals, the support part is sandwiched between the centering support piece and the annular main body, and the centering support piece is away from the side of the support part and the basin rack fixed.
  • the centering support piece includes an auxiliary diaphragm and a flexible circuit board stacked in sequence, and the flexible circuit board is sandwiched between the support portion and the auxiliary diaphragm.
  • the present application also provides an electronic device, including a sound-generating device, and the sound-generating device is a sound-generating device including all or part of the above technical structures.
  • the beneficial effect of the present application is that the vibration system is arranged on the basin frame, and the voice coil of the vibration system stimulates the diaphragm to vibrate and produce sound under the excitation action of the magnetic circuit system.
  • the fixed part of the diaphragm is arranged on the top surface of the basin frame to connect the diaphragm and the basin frame, and the annular support of the diaphragm extends from the edge of the fixed part and is placed on the outer side wall of the basin frame.
  • the annular support can be fitted with the casing to achieve sealing between the casing and the basin frame.
  • the fixed part and the annular support are made by two-color injection molding technology, so that the vibration part, the fixed part and the annular support can form a whole, and at the same time have different physical properties, so that the vibration part can meet the acoustic performance of sound, and the annular support The parts meet the waterproof product performance.
  • FIG. 1 is a schematic structural diagram of an embodiment of a sound-emitting device of the application.
  • Fig. 2 is the exploded structure schematic diagram of the sound-emitting device of Fig. 1;
  • Fig. 3 shows the A-A cross-sectional structural schematic diagram of the sound-emitting device of Fig. 1;
  • FIG. 4 shows a schematic diagram of a partial enlarged structure of the sound-emitting device of FIG. 3 at position B.
  • FIG. 4 shows a schematic diagram of a partial enlarged structure of the sound-emitting device of FIG. 3 at position B.
  • the sound-generating device of this embodiment includes a basin frame 10 and a vibration system and a magnetic circuit system fixed to the basin frame 10 , wherein the vibration system includes a diaphragm 20 fixed to the basin frame 10 and a vibrating membrane 20 fixed to the basin frame 10 .
  • the diaphragm 20 is close to the voice coil 30 on the side of the magnetic circuit system.
  • the magnetic circuit system can excite the diaphragm 20 to vibrate and sound.
  • the basin frame 10 includes a top surface 11 disposed opposite to the diaphragm 20 and an outer side wall 12 extending from the edge of the top surface 11 in a direction away from the diaphragm 20 , and the diaphragm 20 includes a vibrating portion 22.
  • the vibration part 22 is suspended on the basin frame 10; the fixed part 23 extends from the edge of the vibration part 22 and surrounds the vibration part 22.
  • the annular support 24 is connected to the side of the fixed part 23 away from the vibration part 22 , and the annular support 24 extends from the fixed part 23 to the magnetic circuit system and is fixed on the outer surface of the outer side wall 12 .
  • the annular support 24 and the fixing portion 23 are integrally formed by two-color injection molding, and the hardness of the fixing portion 23 is greater than that of the vibration portion 22 and smaller than that of the annular support 24 .
  • the vibration system is arranged on the basin frame 10, and the voice coil 30 of the vibration system stimulates the diaphragm 20 to vibrate and produce sound under the excitation action of the magnetic circuit system.
  • the fixing part 23 of the diaphragm 20 is arranged on the top surface 11 of the basin frame 10 to connect the diaphragm 20 and the basin frame 10 , and the annular support 24 of the diaphragm 20 extends from the edge of the fixing part 23 and is placed on the side of the basin frame 10 .
  • the annular support 24 can fit with the casing to achieve sealing between the casing and the basin frame 10 .
  • the fixed part 23 and the annular support 24 are made by two-color injection molding technology, so that the vibration part 22, the fixed part 23 and the annular support 24 can be formed as a whole, and at the same time have different physical properties, so that the vibration part 22 can meet the requirements of sound.
  • the annular support 24 satisfies the waterproof performance of the product, that is, the diaphragm 20 of this embodiment can take into account both the waterproof performance and the acoustic performance of the product.
  • At least one of the vibrating portion 22 and the fixing portion 23 in this embodiment is a piece of silica gel, and the annular support member 24 is a steel ring. Silicone has good elasticity and is easy to vibrate and sound under external excitation.
  • the vibrating part 22 of this embodiment includes a connecting part 221 spaced from the fixing part 23 and a folded ring 222 connected between the fixing part 23 and the connecting part 221 , and the folded ring 222 is facing away The arc protruding in the direction of the magnetic circuit system.
  • the diaphragm 20 further includes a spherical top 21 connected to the side of the connecting portion 221 away from the folding ring 222 , and the connecting portion 221 is arranged around the circumferential edge of the spherical top 21 .
  • the vibration system of this embodiment further includes a skeleton 40 connected between the diaphragm 20 and the voice coil 30 .
  • the skeleton 40 includes an annular body 41 and an extension bent and extended from the annular body 41 toward the magnetic circuit system. part 42 , the voice coil 30 is fixed on the side of the extension part 42 away from the annular main body 41 , and the annular main body 41 is connected between the connecting part 221 and the dome 21 .
  • the dome 21 of this embodiment is fixed on the side of the annular main body 41 away from the extension 42 , and the annular main body 41 is correspondingly recessed toward the magnetic circuit system to form an escape groove 43 .
  • the circumferential edge of 21 is correspondingly installed in the avoidance groove 43 , so that the ball top 21 is embedded in the avoidance groove 43 , and the stability of the ball top 21 is improved.
  • the magnetic circuit system includes a magnet part fixed on the basin frame 10 and a magnetic bowl 70 installed on the side of the magnet part away from the diaphragm 20 , the magnet part is sandwiched between the magnetic bowl 70 and the basin frame 10 , and the magnet part has a magnetic gap, the voice coil 30 is at least partially suspended within the magnetic gap.
  • the magnet part of this embodiment includes a magnetic steel assembly and a pole core assembly
  • the magnetic steel assembly includes a main magnetic steel 61 and a secondary magnetic steel 62
  • the main magnetic steel 61 and the auxiliary magnetic steel 62 Provided on the magnetic bowl 70, the secondary magnetic steel 62 is provided on the outer side of the main magnetic steel 61 in the circumferential direction and leaves a gap with the main magnetic steel 61 to form a magnetic gap.
  • the pole core assembly includes a main pole core 51 and a secondary pole core 52 .
  • the main pole core 51 is arranged on the main magnetic steel 61
  • the auxiliary pole core 52 is arranged on the auxiliary magnetic steel 62
  • the basin frame 10 is arranged in the circumferential direction of the auxiliary pole core 52 .
  • the voice coil 30 is arranged in the magnetic gap between the magnetic steel assembly and the pole core assembly.
  • the vibration system further includes a centering support piece 80 that is opposite to the folding ring 222 and arranged at intervals
  • the frame 40 further includes a centering support piece 80 that is bent and extended from the annular main body toward 41 away from the vibrating membrane.
  • the support portion 44, the support portion 44 and the extension portion 42 are arranged at intervals, the support portion 44 is sandwiched between the centering support piece 80 and the annular body 41, and the centering support piece 80 is away from One side of the support portion 44 is fixed to the basin frame 10 .
  • the centering support piece 80 includes an auxiliary diaphragm 81 and a flexible circuit board 82 stacked in sequence, and the flexible circuit board 82 is sandwiched between the support portion 44 and the auxiliary diaphragm 81 .
  • the present application also provides an electronic device.
  • the electronic device (not shown in the figure) according to this embodiment includes a sound-generating device.
  • the sound-generating device is a sound-generating device including all or part of the above technical structures.
  • the electronic device of this embodiment has the advantages of good acoustic performance and good waterproof performance.

Landscapes

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

Abstract

La présente demande concerne un dispositif de production de son et un appareil électronique le comprenant. Le dispositif de production de son comprend un saladier, un système de vibration, et un système de circuit magnétique ; le système de circuit magnétique met en vibration le système de vibration de façon à produire un son ; le système de vibration comprend une membrane vibrante et une bobine acoustique qui sont fixées au saladier ; la membrane vibrante comprend une partie vibrante et une partie fixe ; la partie vibrante est suspendue dans le saladier ; la partie fixe s'étend depuis le bord de la partie vibrante et entoure la partie vibrante ; le saladier comprend une surface supérieure disposée à l'opposé de la membrane vibrante, et une paroi latérale externe s'étendant depuis le bord de la surface supérieure vers une direction distante de la membrane vibrante ; la partie fixe est opposée à la surface supérieure et fixée à celle-ci ; la membrane vibrante comprend en outre un élément de support annulaire qui entoure et est fixé à la périphérie de la paroi latérale externe ; l'élément de support annulaire est relié au côté de la partie fixe distant de la partie vibrante et est intégré à la partie fixe au moyen d'un moulage par injection à deux couleurs ; et la dureté de la partie fixe est supérieure à la dureté de la partie vibrante et est inférieure à la dureté de l'élément de support annulaire. La solution technique de la présente demande peut résoudre efficacement le problème de l'état de la technique selon lequel les dispositifs de production de son ne peuvent pas tenir compte des performances d'étanchéité à l'eau et des performances du produit.
PCT/CN2020/102737 2020-07-08 2020-07-17 Dispositif de production de son et appareil électronique le comprenant WO2022006988A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202021335802.5U CN212936185U (zh) 2020-07-08 2020-07-08 发声器件及具有其的电子设备
CN202021335802.5 2020-07-08

Publications (1)

Publication Number Publication Date
WO2022006988A1 true WO2022006988A1 (fr) 2022-01-13

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CN (1) CN212936185U (fr)
WO (1) WO2022006988A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117857990A (zh) * 2024-03-08 2024-04-09 瑞声光电科技(常州)有限公司 扬声器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103052017A (zh) * 2013-01-07 2013-04-17 歌尔声学股份有限公司 发声器件及其制造方法
CN203086719U (zh) * 2013-01-07 2013-07-24 歌尔声学股份有限公司 发声器件
WO2013187270A1 (fr) * 2012-06-11 2013-12-19 株式会社村田製作所 Soufflante
CN109862487A (zh) * 2018-12-29 2019-06-07 瑞声科技(新加坡)有限公司 发声器件
CN110798785A (zh) * 2019-10-10 2020-02-14 瑞声科技(新加坡)有限公司 发声器件

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013187270A1 (fr) * 2012-06-11 2013-12-19 株式会社村田製作所 Soufflante
CN103052017A (zh) * 2013-01-07 2013-04-17 歌尔声学股份有限公司 发声器件及其制造方法
CN203086719U (zh) * 2013-01-07 2013-07-24 歌尔声学股份有限公司 发声器件
CN109862487A (zh) * 2018-12-29 2019-06-07 瑞声科技(新加坡)有限公司 发声器件
CN110798785A (zh) * 2019-10-10 2020-02-14 瑞声科技(新加坡)有限公司 发声器件

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117857990A (zh) * 2024-03-08 2024-04-09 瑞声光电科技(常州)有限公司 扬声器
CN117857990B (zh) * 2024-03-08 2024-05-17 瑞声光电科技(常州)有限公司 扬声器

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