WO2022000602A1 - Ensemble membrane vibrante et haut-parleur - Google Patents

Ensemble membrane vibrante et haut-parleur Download PDF

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Publication number
WO2022000602A1
WO2022000602A1 PCT/CN2020/103097 CN2020103097W WO2022000602A1 WO 2022000602 A1 WO2022000602 A1 WO 2022000602A1 CN 2020103097 W CN2020103097 W CN 2020103097W WO 2022000602 A1 WO2022000602 A1 WO 2022000602A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic
magnetic steel
sound
diaphragm
loudspeaker
Prior art date
Application number
PCT/CN2020/103097
Other languages
English (en)
Chinese (zh)
Inventor
宋威
陶伟伟
金鑫
王奇
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 WO2022000602A1 publication Critical patent/WO2022000602A1/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • 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
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/22—Clamping rim of diaphragm or cone against seating
    • 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
    • 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
    • H04R9/04—Construction, mounting, or centering of coil
    • 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 technical field of loudspeakers, in particular to a diaphragm assembly and a loudspeaker.
  • the conventional structure of a loudspeaker generally includes a magnetic circuit system and a vibration system, wherein the vibration system further includes a diaphragm and a voice coil.
  • the diaphragm includes a center part, a peripheral part, and a ring part connecting the center part and the peripheral part. Since in actual installation and use, the outer edge of the outer part is fixed by connecting to the basin frame, and the inner edge of the center part is connected to on top of the ball. Driven by the voice coil, the diaphragm vibrates to produce sound.
  • a related kind of loudspeaker in order to achieve the corresponding acoustic effect, the diaphragm is reinforced, and a first sound film and a second sound film and a ring-shaped dome respectively connected to the two sound films are provided.
  • a sound membrane is connected, the inner side of the dome is connected with the second sound membrane, and the inner side of the second sound membrane is connected with the magnetic circuit system.
  • the ring part of the second sound membrane will be designed in the shape of an arc, and in the corresponding speaker structure design, there is a gap between the two ends of the second sound membrane and the maximum amplitude is large, so the simple arc shape
  • the design will be limited, and it is necessary to choose a wider or higher ring shape to ensure that the second sound membrane has a sufficient stretch length.
  • the ring part is wider and lower, the effective radiation area of the diaphragm is small and the sensitivity is reduced; if the second sound diaphragm is narrow, the ring part is required to be higher, and when the diaphragm vibrates upward, the ring part will The top will protrude from the upper surface of the magnetic circuit system, and it will exceed a lot, so a large vibration space should be reserved for the product.
  • One of the objectives of the present invention is to provide a diaphragm assembly.
  • a vibrating membrane assembly includes a vibrating membrane, the vibrating membrane includes a central portion, a peripheral portion and a first folded ring portion connecting the central portion and the peripheral portion, the first folded ring portion is perpendicular to the central portion
  • the center part is annular, which includes an outer end connected with the first folding ring part and an inner end opposite to the outer end;
  • the diaphragm assembly also includes a connecting piece and a first tone a membrane;
  • the connecting member includes an outer peripheral end connected with the inner peripheral end of the central portion and the inner peripheral end opposite to the outer peripheral end;
  • the first sound membrane includes an outer peripheral end connected with the inner peripheral end of the connecting member an edge end, an inner edge end opposite to the outer edge end, and a second ring portion connecting the outer edge end and the inner edge end, the second ring portion of the first sound membrane includes at least two protuberances part, and the bulging direction is the same as the bulging direction of the first folding ring part.
  • the raised portion is wavy
  • the peripheral portion and the center portion of the vibrating membrane and the outer edge of the first sound membrane are located on the same horizontal plane, and the inner edge of the first sound membrane and the Horizontal planes are parallel.
  • the protuberances include three.
  • the outer peripheral end of the connecting piece is connected with the inner end facing away from the first folded ring portion, and the inner peripheral end of the connecting piece is connected with the outer edge end on the side facing away from the second folded ring portion.
  • the raised portion near the inner edge end has a greater distance from the horizontal plane than the raised portion near the outer edge end.
  • Another object of the present invention is to provide a loudspeaker, including the diaphragm assembly described in any one of the above; the loudspeaker further includes a basin frame, and a magnetic circuit system, a voice coil, and all the components housed in the basin frame.
  • the flexible circuit board and the skeleton are electrically connected to the voice coil.
  • the basin frame includes a second side end fixedly connected with the peripheral portion and a first side end opposite to the second side end.
  • the magnetic circuit system includes a first magnetic component, a second magnetic component, and a magnetic conductive component located between the first magnetic component and the second magnetic component;
  • the first magnetic component includes a fixed connection with the first side end a first clamping plate, a first main magnetic steel fixed on the first clamping plate, and a first auxiliary magnetic steel located on both sides of the first main magnetic steel and forming a first magnetic gap with the first main magnetic steel;
  • the second magnetic assembly includes a second splint fixedly connected to the inner edge of the first sound membrane, a second main magnet fixed on the second splint, and a second main magnet located on both sides of the second main magnet.
  • the magnetic conductive assembly includes a primary magnetic sheet located between the first primary magnetic steel and the second primary magnetic steel and a primary magnetic sheet located between the first primary magnetic steel and the second primary magnetic steel A secondary magnetic conductive sheet between the magnetic steel and the second secondary magnetic steel; the first magnetic gap communicates with the second magnetic gap.
  • the voice coil is suspended between the first magnetic gap and the second magnetic gap.
  • the bobbin surrounds the magnetic circuit system and includes a first end connected to the connector and a second end connected to the voice coil and remote from the connector.
  • the second auxiliary magnetic steel includes an end connected with the inner edge of the first sound film, a bottom connected with the auxiliary magnetic conductive sheet, and a side surface connecting the bottom and the end, and the second auxiliary magnetic steel The angle between the side of the second pair of magnets and the bottom of the second pair of magnets is an acute angle.
  • the second end of the skeleton is further provided with an extension portion extending toward the magnetic circuit system and connected with the voice coil.
  • the speaker further includes a second sound membrane disposed in the basin frame; the second sound membrane includes a free end connected to the side of the flexible circuit board close to the first clamp, and the second sound membrane
  • the fixed end of the basin frame is fixedly connected, and the central folded ring part is connected with both the free end and the fixed end; the flexible circuit board is fixedly connected with the extension part of the second end of the frame.
  • the speaker further includes a cover plate for covering the first sound film, one side of the cover plate is fixedly connected with the outer edge of the first sound film, and the other side is connected with the first sound film.
  • the inner edge end of a sound membrane is fixedly connected.
  • the beneficial effect of the present utility model is as follows: the present utility model provides a sound film structure with a wave-shaped bulge, and the sound film structure is formed on the vibration film to radiate sound waves outward through vibration.
  • This structure is relatively As for the existing single-arc structure, under the design idea that the width of the entire folded ring portion is relatively reduced, it can be ensured that the entire diaphragm has sufficient amplitude to meet the needs of acoustics.
  • FIG. 1 is a schematic structural diagram of an embodiment of a diaphragm assembly in the present invention.
  • FIG. 2 is a schematic cross-sectional structure diagram of A-A in FIG. 1 .
  • FIG. 3 is a schematic structural diagram of an embodiment of the speaker in the present invention.
  • FIG. 4 is a schematic diagram of the exploded structure of FIG. 3 .
  • FIG. 5 is a schematic cross-sectional structure diagram of B-B in FIG. 3 .
  • FIG. 6 is a schematic cross-sectional structural diagram of C-C in FIG. 3 .
  • FIG. 7 is a schematic diagram of the structure of the first sound membrane used in an embodiment of the speaker of the present invention.
  • a diaphragm assembly includes a diaphragm 1 , a connecting member 2 connected to the diaphragm 1 , and a first sound diaphragm 3 connected to the connecting member 2 .
  • the diaphragm 1 includes a central portion 1a, a peripheral portion 1b, and a first folded ring portion 1c connecting the central portion 1a and the peripheral portion 1b.
  • the first folded portion 1c is raised in a direction perpendicular to the central portion 1a.
  • the central portion 1a is annular, and includes an outer end 1aa connected to the first folded ring portion 1c and an inner end 1ab opposite to the outer end.
  • the connector 2 includes an outer peripheral end 2a connected with the inner end 1ab of the central portion 1a and an inner peripheral end 2b opposite to the outer peripheral end 2a;
  • the first sound membrane 3 includes an outer edge end 3a connected with the inner peripheral end 2b of the connector and The inner edge end 3b opposite to the outer edge end 3a, and the second folded ring portion 3c connecting the outer edge end 3a and the inner edge end 3b, the second folded ring portion 3c of the first sound membrane 3 includes at least two 3 d of protruding parts, and the protruding direction is the same as the protruding direction of the first folding ring part 1c.
  • the protruding portion 3d is wavy, and the peripheral portion 1b and the central portion 1a of the diaphragm 1 and the outer edge 3a of the first sound diaphragm 3 are located on the same horizontal plane.
  • the inner edge end 3b of the first sound membrane 3 is parallel to the horizontal plane.
  • the raised portion near the inner edge end 3b has a greater distance from the horizontal plane than the raised portion near the outer edge end 3a is farther from the horizontal plane.
  • a drop is formed between the inner edge end 3b and the outer edge end 3a of the first sound membrane 3, and the height of the wave-shaped raised portion 3d of the second ring portion 3c (ie, the distance from the horizontal plane) starts from the outer edge end 3a increases toward the inner edge end 3b.
  • the outer peripheral end 2a of the connecting piece is connected to the inner side end 1ab facing away from the first folded ring portion 1c, and the inner peripheral end 2b and the outer edge end 3a of the connecting piece are facing away from the first folded ring portion 1c.
  • the two folded ring portions 3c are connected on one side. This structure is used to form a stable connection between the connecting member 2 and the diaphragm 1 and the first sound film 3 and is convenient for connecting with the inner voice coil assembly.
  • the diaphragm 1 is designed in a ring shape as a whole, and the central portion 1a is connected to the first sound diaphragm 3 through a ring-shaped connecting member 2 to form a diaphragm assembly.
  • the first sound membrane 3 achieves the effect of a wave shape by forming a plurality of ridges.
  • the number of ridges is 2, but in other embodiments of the present invention, the number of ridges is 3 or more than 3 Piece.
  • the inner edge end 3b of the first sound membrane 3 is connected to the magnetic circuit system of the speaker.
  • the wave structure formed by the first sound membrane 3 is to help the entire first sound membrane 3 to vibrate structurally.
  • this structure adopts a single arc-shaped structure.
  • a sound membrane 3 has a larger amplitude, thereby meeting the acoustic effect requirements of the entire speaker.
  • the ring portion is made narrow, thereby increasing the radiation area and improving the sensitivity; when the diaphragm vibrates upwards, due to the short height of the waveform of a single bulge, the top portion of the second ring portion 3c beyond the magnetic circuit system is less, which can reduce the reserve Vibration space, saving vertical space of speaker products.
  • the number of the raised portions 3d' of the first sound membrane 3' in the second embodiment is three, and the number of the raised portions 3d' between the inner edge end 3b' and the outer edge end 3a' of the first sound membrane 3' is three.
  • a drop is formed, and the height of the wavy raised portion of the second folded ring portion 3c' (that is, the distance from the horizontal plane) increases from the outer edge end 3a' to the inner edge end 3b', relative to the height of the first sound membrane 3 in FIG. 2 .
  • the second embodiment can further solve the problem of self-interference of the sound membrane under large amplitude.
  • a loudspeaker adopts the diaphragm assembly of the first embodiment, of course, the diaphragm assembly of the second embodiment can also be used.
  • the speaker also includes a basin frame 11, a magnetic circuit system, a voice coil 5, a flexible circuit board 14 electrically connected with the voice coil 5, and a skeleton 15 accommodated in the basin frame 11; the basin frame 11 includes a fixed connection with the outer part 1c.
  • the magnetic circuit system includes a first magnetic component, a second magnetic component and a magnetic conductive component located between the first magnetic component and the second magnetic component
  • the first magnetic assembly includes the first splint 4 fixedly connected with the first side end 11a, the first main magnetic steel 6 fixed on the first splint 4 and the first main magnetic steel 6 on both sides and with the first main magnetic steel
  • the steel 6 forms the first secondary magnetic steel 8 of the first magnetic gap 19;
  • the second magnetic assembly includes a second splint 10 fixedly connected to the inner edge end 3b of the first sound membrane 3, and a second main plate 10 fixed on the second splint 10.
  • the magnetic steel 7 and the second secondary magnetic steel 9 located on both sides of the second main magnetic steel 7 and forming a second magnetic gap 18 with the second main magnetic steel 7;
  • the voice coil 5 is suspended between the first magnetic gap 18 and the second magnetic gap 19;
  • the bobbin 15 surrounds the magnetic circuit system, which includes a first end 15a connected with the connecting piece 2 and a second end 15a connected with the voice coil 5 and away from the connecting piece 2. Two ends 15b.
  • this embodiment sets the formed diaphragm assembly into a specific loudspeaker, and the loudspeaker using this diaphragm assembly satisfies the requirement that the width of the ring on the first sound diaphragm 3 is narrowed. case, with better acoustics.
  • the second secondary magnetic steel 9 includes an end portion 9a connected with the inner edge end 3b of the first sound membrane 3, a bottom portion 9b connected with the secondary magnetic conductive sheet 13, and a side surface 9c connecting the bottom portion 9b and the end portion 9a.
  • the angle between the side 9c and the bottom 9b is an acute angle, that is, the side 9c of the second secondary magnetic steel 9 is inclined inward to form an escape space for the bulge of the first sound membrane 3 .
  • the second end 15b of the bobbin 15 is further provided with an extension portion 15c extending toward the magnetic circuit system and connected with the voice coil 5, as shown in FIG. 6 .
  • the speaker further includes a second sound film 16 disposed in the basin frame 11 ;
  • the second sound film 16 includes a free end 16 a connected to the side of the flexible circuit board 14 close to the first clamp plate 4 , and is fixed to the basin frame 11 .
  • the connected fixed end 16b, and the central folded ring portion 16c connected to both the free end 16a and the fixed end 16b; the flexible circuit board 14 is fixedly connected to the extension 15c of the second end 15b of the frame 15, as shown in FIG. 6 .
  • the speaker further includes a cover plate 17 for covering the first sound membrane 3 .
  • One side edge 17a of the cover plate 17 is fixedly connected with the outer edge end 3a of the first sound membrane 3
  • the other side edge 17b is fixedly connected with the inner edge end 3b of the first sound membrane 3 .

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

Abstract

Ensemble membrane vibrante, comprenant une membrane vibrante. La membrane vibrante comprend une partie centrale, une partie périphérique, et une partie bague de pliage reliant la partie centrale et la partie périphérique ; et la partie périphérique fait saillie vers une direction perpendiculaire à la partie centrale. L'ensemble membrane vibrante est caractérisé en ce que la partie centrale est annulaire et comprend une extrémité latérale externe reliée à la partie périphérique et une extrémité côté interne opposée à l'extrémité latérale externe. Haut-parleur utilisant l'ensemble membrane vibrante susmentionné. Structure de membrane vocale présentant une saillie ondulée. La structure de membrane vocale est formée sur la membrane vibrante afin de rayonner des ondes sonores vers l'extérieur au moyen d'une vibration. Par comparaison avec des structures en forme d'arc unique existantes, la structure peut garantir que la totalité de la membrane vibrante présente suffisamment d'amplitude pour satisfaire aux exigences acoustiques dans le cadre de l'idée de conception que la taille de largeur de la totalité de la partie de bague de pliage est relativement réduite.
PCT/CN2020/103097 2020-06-30 2020-07-20 Ensemble membrane vibrante et haut-parleur WO2022000602A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010615655.5 2020-06-30
CN202010615655.5A CN111935608B (zh) 2020-06-30 2020-06-30 一种扬声器

Publications (1)

Publication Number Publication Date
WO2022000602A1 true WO2022000602A1 (fr) 2022-01-06

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PCT/CN2020/103097 WO2022000602A1 (fr) 2020-06-30 2020-07-20 Ensemble membrane vibrante et haut-parleur

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WO (1) WO2022000602A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112584284B (zh) * 2020-12-25 2022-02-11 瑞声新能源发展(常州)有限公司科教城分公司 微型扬声器

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JP2008167111A (ja) * 2006-12-28 2008-07-17 Onkyo Corp スピーカー用エッジおよびこれを用いたスピーカー振動板並びにスピーカー
CN206380090U (zh) * 2017-01-14 2017-08-04 东莞市惠隆鑫电子有限公司 一种全频喇叭的结构
CN207835795U (zh) * 2017-12-25 2018-09-07 歌尔科技有限公司 电声转换器及电子设备
US20180288530A1 (en) * 2015-10-16 2018-10-04 Goertek Inc. Loudspeaker
CN108900955A (zh) * 2018-06-27 2018-11-27 歌尔股份有限公司 振膜和扬声器
CN111131976A (zh) * 2020-03-05 2020-05-08 瑞声科技(新加坡)有限公司 扬声器

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CN202019444U (zh) * 2010-09-01 2011-10-26 歌尔声学股份有限公司 一种振膜以及采用该振膜的动圈式电声转换器
CN103428613B (zh) * 2013-06-06 2016-12-28 深圳市鲁粤盛科技有限公司 双折环辐射振动扬声器
DE102014101075B3 (de) * 2014-01-29 2015-03-12 Heraeus Materials Technology Gmbh & Co. Kg Verfahren zur Herstellung einer Lautsprechermembran
CN205847592U (zh) * 2016-07-21 2016-12-28 瑞声科技(新加坡)有限公司 扬声器
CN110099340B (zh) * 2019-05-15 2020-08-07 瑞声声学科技(深圳)有限公司 扬声器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008167111A (ja) * 2006-12-28 2008-07-17 Onkyo Corp スピーカー用エッジおよびこれを用いたスピーカー振動板並びにスピーカー
US20180288530A1 (en) * 2015-10-16 2018-10-04 Goertek Inc. Loudspeaker
CN206380090U (zh) * 2017-01-14 2017-08-04 东莞市惠隆鑫电子有限公司 一种全频喇叭的结构
CN207835795U (zh) * 2017-12-25 2018-09-07 歌尔科技有限公司 电声转换器及电子设备
CN108900955A (zh) * 2018-06-27 2018-11-27 歌尔股份有限公司 振膜和扬声器
CN111131976A (zh) * 2020-03-05 2020-05-08 瑞声科技(新加坡)有限公司 扬声器

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Publication number Publication date
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