WO2022062121A1 - Dispositif générateur de sons - Google Patents

Dispositif générateur de sons Download PDF

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Publication number
WO2022062121A1
WO2022062121A1 PCT/CN2020/128777 CN2020128777W WO2022062121A1 WO 2022062121 A1 WO2022062121 A1 WO 2022062121A1 CN 2020128777 W CN2020128777 W CN 2020128777W WO 2022062121 A1 WO2022062121 A1 WO 2022062121A1
Authority
WO
WIPO (PCT)
Prior art keywords
ring
fixed
sound
magnetic
vibrating
Prior art date
Application number
PCT/CN2020/128777
Other languages
English (en)
Chinese (zh)
Inventor
令狐荣林
章统
肖波
孔晨亮
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声光电科技(常州)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, 瑞声光电科技(常州)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022062121A1 publication Critical patent/WO2022062121A1/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
    • 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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • 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
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Definitions

  • the present invention relates to the field of acoustics and electricity, in particular to a sound-generating device.
  • a related art sound-generating device includes a basin frame, a vibration system fixed on the basin frame, and a magnetic circuit system that drives the vibration system to vibrate and sound;
  • the vibration system includes a vibrating membrane, which is inserted in the magnetic gap to drive the A voice coil with a vibrating diaphragm, the diaphragm includes a vibrating portion, a ring portion extending from the periphery of the vibrating portion, and a fixing ring portion extending toward the basin frame from the ring portion and being fixed to the basin frame Department.
  • the distortion of the sound-generating device is mainly caused by the nonlinearity of the electromechanical coupling coefficient Bl(x), the stiffness coefficient kms(x), the inductance Le(x), and the damping Rms(v), where the stiffness coefficient kms(x) ) is jointly determined by the vibration system and the air in the back cavity.
  • the K(x) of the air in the back cavity is related to the effective radiation area of the diaphragm at different positions.
  • the diaphragm has a small effective radiation area, resulting in stiffness.
  • the coefficient kms(x) does not match the electromechanical coupling coefficient Bl(x), which further leads to the distortion of the sound-emitting device.
  • the purpose of the present invention is to provide a sounding device with better acoustic performance.
  • the present invention provides a sound-emitting device, which includes a basin frame, a vibration system respectively fixed to the basin frame and a magnetic circuit system that drives the vibration system to vibrate and sound, and the vibration system includes a vibrating membrane and a driver.
  • the diaphragm vibrates the voice coil that emits sound
  • the vibrating membrane includes a ring-shaped vibrating portion, an outer folded ring bent and extended from the outer periphery of the vibrating portion, and an inner folded ring bent and extended from the inner periphery of the vibrating portion, and the outer folded ring is far away from the vibration
  • One side of the part is fixed on the basin frame, and the side of the inner fold away from the vibrating part is fixed on the magnetic circuit system;
  • the outer folding ring or the inner folding ring comprises a first folding ring bent and extended by the vibrating part and a second folding ring which is bent and extended from a side of the first folding ring away from the vibrating part,
  • the second fold ring is fixed to the basin frame or the magnetic circuit system, and the first fold ring and the second fold ring are recessed along the vibration direction of the vibrating membrane and have the same recess direction.
  • both the first folded ring and the second folded ring are concave in a direction close to the magnetic circuit system along the vibration direction of the diaphragm.
  • the outer fold ring includes a first fold ring bent and extended from the vibrating part and a second fold ring bent and extended from a side of the first fold ring away from the vibrating part
  • the The inner ring is recessed in a direction away from the magnetic circuit system along the vibration direction.
  • the inner folding ring includes a first folding ring bent and extended from the vibrating part and a second folding ring which is bent and extended from the side of the first folding ring far away from the vibrating part
  • the The outer folding ring is recessed in the direction away from the magnetic circuit system along the vibration direction.
  • the sound-generating device further includes a sealing ring that is pressed and arranged on the side of the inner fold away from the magnetic circuit system, and the sealing ring fixes the side of the inner fold away from the vibrating part on the side of the inner fold.
  • the magnetic circuit system is pressed and arranged on the side of the inner fold away from the magnetic circuit system, and the sealing ring fixes the side of the inner fold away from the vibrating part on the side of the inner fold.
  • the magnetic circuit system includes a magnetic yoke fixed to the basin frame, a main magnetic steel unit fixed to the magnetic yoke, and arranged at intervals on the periphery of the main magnetic steel unit and together with the main magnetic steel unit.
  • a secondary magnetic steel unit forming a magnetic gap and a magnetic bowl covered on the main magnetic steel unit, the peripheral side of the magnetic bowl presses and fixes the side of the inner fold away from the vibrating part to the auxiliary magnetic steel unit Magnetic steel unit, the voice coil is suspended in the magnetic gap.
  • the vibration system further includes a frame, the frame includes a frame body connected to the voice coil, and a frame connecting portion that is bent and extended from the frame body and abutted and fixed to the vibration portion.
  • the sound-generating device further comprises a magnetic conductive plate fixed on the side of the basin frame close to the magnetic circuit system, and the side of the outer fold away from the vibrating part is fixed on the basin frame away from the one side of the magnetic conductive plate;
  • the vibration system further includes an elastic conductive member fixed on the side of the magnetic conductive plate away from the vibrating membrane and electrically connected with the voice coil, the elastic conductive member passes through the magnetic conductive member The plate is fixed to the basin frame.
  • the vibration system further includes an auxiliary diaphragm fixed on the side of the magnetic conductive plate away from the diaphragm, and the auxiliary diaphragm and the elastic conductive member are arranged at intervals.
  • the diaphragm includes a ring-shaped vibrating portion, an outer ring that is bent and extended from the outer periphery of the vibrating portion, and an inner ring that is bent and extended from the inner periphery of the vibrating portion.
  • the folding ring or the inner folding ring includes a first folding ring bent and extended by the vibration part, and a second folding ring bent and extended from the side of the first folding ring away from the vibration part, and the first folding ring is bent and extended.
  • Two folded rings are fixed on the basin frame or the magnetic circuit system, the first folded ring and the second folded ring are both recessed along the vibration direction of the diaphragm, and the recessed directions of the two are the same;
  • the structure can effectively change the effective radiation area of the diaphragm, so that the stiffness coefficient kms(x) of the sound-emitting device is more matched with the electromechanical coupling coefficient Bl(x), thereby reducing the distortion of the sound-emitting device and improving the acoustic performance.
  • Fig. 1 is the three-dimensional structure schematic diagram of the sound-emitting device of the present invention
  • Fig. 2 is the three-dimensional structure exploded schematic diagram of the sound-emitting device of the present invention
  • Fig. 3 is the sectional view of the sounding device of the present invention.
  • FIG. 4 is a schematic structural diagram of another embodiment of the present invention.
  • the present invention provides a sound-generating device 100
  • the sound-generating device 100 includes a basin frame 1, a magnetic conducting plate 1a fixed to the basin frame 1, respectively fixed to the basin frame 1 and used for
  • the magnetic circuit system 3 has a magnetic gap 30 for the vibration system 2 for vibrating and producing sound, the magnetic circuit system 3 for driving the vibration system 2 to vibrate and produce sound, and the sealing ring 4 .
  • the vibration system 2 includes a diaphragm 21 fixed on the basin frame 1, a voice coil 22 inserted in the magnetic gap 30 to drive the diaphragm 21 to vibrate, a frame 23, an auxiliary diaphragm 24, Elastic conductive member 25 .
  • the diaphragm 21 includes a ring-shaped vibrating portion 211 , an outer ring 212 bent and extended from the outer periphery of the vibrating portion 211 , and an inner ring 213 bent and extended from the inner periphery of the vibrating portion 211 .
  • the side of the inner ring 213 away from the vibration part 211 is fixed to the magnetic circuit system 3 ; the side of the outer ring 212 away from the vibration part 211 is fixed to the basin frame 1 away from the magnetic conducting plate 1a side.
  • the outer folding ring 212 or the inner folding ring 213 includes a first folding ring 2131 bent and extended by the vibrating part 211 , and a bending and extending side of the first folding ring 2131 away from the vibrating part 211 .
  • the second loop 2132 With this structure, the effective radiation area of the diaphragm 21 can be effectively changed, so that the stiffness coefficient kms(x) of the sound-emitting device 100 is more matched with the electromechanical coupling coefficient Bl(x), thereby reducing the distortion of the sound-emitting device 100, Improve acoustic performance
  • first fold ring 2131 and the second fold ring 2132 are recessed along the vibration direction of the diaphragm 21 and have the same recess direction.
  • first fold ring 2131 and the The second folding rings 2132 are all recessed in the direction close to the magnetic circuit system 3 along the vibration direction of the diaphragm 21 .
  • the inner folding ring 213 includes a first folding ring 2131 bent and extended from the vibrating part 211 and a first folding ring 2131 which is bent and extended from a side of the first folding ring 2131 away from the vibrating part 211 .
  • Two folded rings 2132, the outer folded ring 212 is recessed in the direction away from the magnetic circuit system 3 along the vibration direction; the side of the second folded ring 2132 away from the first folded ring 2131 is fixed to the magnetic circuit system 3.
  • the sealing ring 4 is pressed on the side of the second folding ring 2132 away from the magnetic circuit system 3 , and the sealing ring 4 keeps the second folding ring 2132 away from the vibrating part 211 .
  • the voice coil 22 is inserted in the magnetic gap 30 and has a racetrack shape.
  • the frame 23 includes a frame body 231 connected to the voice coil 22 , and a frame connecting portion 232 that is bent and extended from the frame body 231 and abutted and fixed to the vibrating portion 211 .
  • the voice coil 22 is suspended in the magnetic gap 30 by the bobbin 23, and the reliability is better.
  • the elastic conductive member 25 is fixed on the side of the magnetic conductive plate 1a away from the diaphragm 21 and is electrically connected to the voice coil 22 , and the elastic conductive member 25 is fixed to the basin frame 1 through the magnetic conductive plate 1a
  • the elastic conductive members 25 include two and are respectively disposed on opposite sides of the voice coil 22 .
  • the auxiliary vibrating film 24 is fixed on the side of the magnetic conductive plate 1a away from the vibrating film 21 , and the auxiliary vibrating film 24 is spaced apart from the elastic conductive member 24 .
  • the auxiliary diaphragms 24 include two and are respectively disposed on opposite sides of the voice coil 22 . That is, by arranging the elastic conductive member 25 and the auxiliary diaphragm 24 side by side, the internal space of the sound-generating device 100 can be effectively utilized, and the overall volume of the sound-generating device 100 can be reduced.
  • the magnetic circuit system includes a magnetic yoke 31 fixed to the basin frame 1 , a main magnetic steel unit 32 fixed to the magnetic yoke 31 , spaced around the main magnetic steel unit 32 and connected to the main magnetic steel unit. 32 together form the secondary magnetic steel unit 33 of the magnetic gap 30 and the magnetic bowl 5 covered on the main magnetic steel unit 32.
  • the side away from the vibrating portion 211 is pressed and fixed to the secondary magnetic steel unit 33 , and the voice coil 22 is suspended in the magnetic gap 30 .
  • the present invention also provides a sound-generating device 200, as shown in FIG. 4, the structure of which is substantially the same as that of the sound-generating device 100, the difference is that the outer ring 212a includes a first bending and extending portion of the vibration part 211a.
  • the outer ring 212a includes a first bending and extending portion of the vibration part 211a.
  • the diaphragm includes a ring-shaped vibrating portion, an outer ring that is bent and extended from the outer periphery of the vibrating portion, and an inner ring that is bent and extended from the inner periphery of the vibrating portion.
  • the folding ring or the inner folding ring includes a first folding ring bent and extended by the vibration part, and a second folding ring bent and extended from the side of the first folding ring away from the vibration part, and the first folding ring is bent and extended.
  • Two folded rings are fixed on the basin frame or the magnetic circuit system, the first folded ring and the second folded ring are both recessed along the vibration direction of the diaphragm, and the recessed directions of the two are the same;
  • the structure can effectively change the effective radiation area of the diaphragm, so that the stiffness coefficient kms(x) of the sound-emitting device is more matched with the electromechanical coupling coefficient Bl(x), thereby reducing the distortion of the sound-emitting device and improving the acoustic performance.
  • the present invention provides an embodiment of the present invention as described above, which is not intended to limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied In other related technical fields, they are all included within the scope of patent protection of the present invention.

Landscapes

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

Abstract

L'invention concerne un dispositif générateur de sons comprenant un panier, un système de vibration et un système de circuit magnétique pour amener le système de vibration à générer, qui sont respectivement fixés sur le panier. Le système de vibration comprend une membrane vibrante et une bobine acoustique pour amener la membrane vibrante à générer des sons. La membrane vibrante comprend une partie vibrante annulaire, un bord externe ondulé se courbant et s'étendant à partir d'un bord périphérique externe de la partie vibrante, et un bord interne ondulé se courbant et s'étendant à partir d'un bord périphérique interne de la partie vibrante. Le côté du rebord ondulé extérieur à l'opposé de la partie vibrante est fixé au panier, et le côté du rebord ondulé intérieur à l'opposé de la partie vibrante est fixé au système de circuit magnétique. Le rebord ondulé externe ou le rebord ondulé interne comprend un premier rebord ondulé se courbant et s'étendant à partir de la partie vibrante et un second rebord ondulé se courbant et s'étendant du côté du premier rebord ondulé à l'opposé de la partie vibrante. Le second rebord ondulé est fixé au panier ou au système de circuit magnétique. Le premier rebord ondulé et le second rebord ondulé sont tous deux formés par retrait le long d'une direction de vibration de la membrane vibrante et ont la même direction de retrait. Par rapport à l'état de la technique, le dispositif générateur de sons de la présente invention présente de meilleures performances acoustiques.
PCT/CN2020/128777 2020-09-27 2020-11-13 Dispositif générateur de sons WO2022062121A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011029004.4A CN112261542A (zh) 2020-09-27 2020-09-27 发声器件
CN202011029004.4 2020-09-27

Publications (1)

Publication Number Publication Date
WO2022062121A1 true WO2022062121A1 (fr) 2022-03-31

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ID=74233179

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Application Number Title Priority Date Filing Date
PCT/CN2020/128777 WO2022062121A1 (fr) 2020-09-27 2020-11-13 Dispositif générateur de sons

Country Status (2)

Country Link
CN (1) CN112261542A (fr)
WO (1) WO2022062121A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114866923A (zh) * 2022-05-07 2022-08-05 歌尔股份有限公司 发声装置和电子终端

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101990149A (zh) * 2010-12-06 2011-03-23 天津中环真美声学技术有限公司 双折环平板扬声器音盆
CN202455528U (zh) * 2011-12-30 2012-09-26 瑞声声学科技(常州)有限公司 薄型扬声器
CN204131704U (zh) * 2014-10-20 2015-01-28 Tcl通力电子（惠州）有限公司 无源辐射器及音响
US20160119718A1 (en) * 2013-05-18 2016-04-28 Goertek Inc. Double-vibrating-diaphragm loudspeaker module
CN106535069A (zh) * 2016-11-29 2017-03-22 珠海格力电器股份有限公司 一种扬声器及音频设备
US20200053479A1 (en) * 2018-08-10 2020-02-13 AAC Technologies Pte. Ltd. Speaker module
CN111641902A (zh) * 2020-05-20 2020-09-08 瑞声科技(新加坡)有限公司 一种发声器件

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CN203722807U (zh) * 2013-12-28 2014-07-16 江西联创宏声电子有限公司 一种用于微型电声器件的多段式悬边振膜结构
CN205847547U (zh) * 2016-07-18 2016-12-28 瑞声科技(新加坡)有限公司 扬声器
CN205847592U (zh) * 2016-07-21 2016-12-28 瑞声科技(新加坡)有限公司 扬声器
CN106101941A (zh) * 2016-08-23 2016-11-09 深圳市音沃仕科技有限公司 一种振膜
CN209390336U (zh) * 2018-12-29 2019-09-13 瑞声科技(新加坡)有限公司 一种扬声器
CN110996226B (zh) * 2019-11-21 2021-12-24 瑞声科技(新加坡)有限公司 发声器件
CN111405428B (zh) * 2019-12-27 2021-07-09 瑞声科技(新加坡)有限公司 发声器件
CN111641904B (zh) * 2020-05-28 2021-10-19 瑞声科技(新加坡)有限公司 发声器件

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101990149A (zh) * 2010-12-06 2011-03-23 天津中环真美声学技术有限公司 双折环平板扬声器音盆
CN202455528U (zh) * 2011-12-30 2012-09-26 瑞声声学科技(常州)有限公司 薄型扬声器
US20160119718A1 (en) * 2013-05-18 2016-04-28 Goertek Inc. Double-vibrating-diaphragm loudspeaker module
CN204131704U (zh) * 2014-10-20 2015-01-28 Tcl通力电子（惠州）有限公司 无源辐射器及音响
CN106535069A (zh) * 2016-11-29 2017-03-22 珠海格力电器股份有限公司 一种扬声器及音频设备
US20200053479A1 (en) * 2018-08-10 2020-02-13 AAC Technologies Pte. Ltd. Speaker module
CN111641902A (zh) * 2020-05-20 2020-09-08 瑞声科技(新加坡)有限公司 一种发声器件

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