WO2022110457A1 - Dispositif de production de son - Google Patents

Dispositif de production de son Download PDF

Info

Publication number
WO2022110457A1
WO2022110457A1 PCT/CN2020/140066 CN2020140066W WO2022110457A1 WO 2022110457 A1 WO2022110457 A1 WO 2022110457A1 CN 2020140066 W CN2020140066 W CN 2020140066W WO 2022110457 A1 WO2022110457 A1 WO 2022110457A1
Authority
WO
WIPO (PCT)
Prior art keywords
voice coil
fixed
magnetic
fixing part
sound
Prior art date
Application number
PCT/CN2020/140066
Other languages
English (en)
Chinese (zh)
Inventor
张龙
杨虎虎
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 WO2022110457A1 publication Critical patent/WO2022110457A1/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
    • 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
    • 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 invention relates to the field of electro-acoustic conversion, in particular to a sound-generating device.
  • the sound-generating device includes a basin frame, a vibration system respectively fixed to the basin frame and a magnetic circuit system with a magnetic gap.
  • the coil and the skeleton connecting the diaphragm and the voice coil is prone to the problem that the skeleton and the diaphragm are not firmly bonded.
  • the purpose of the present invention is to provide a sounding device, which not only eliminates the risk of poor bonding between the skeleton and the diaphragm, but also reduces the assembly process.
  • the sound-generating device includes a basin frame, a vibration system respectively fixed to the basin frame and a magnetic circuit system having a magnetic gap, and the vibration system includes a diaphragm fixed to the basin frame and a magnetic circuit system inserted into the basin frame.
  • a voice coil with a gap to drive the diaphragm to vibrate and produce sound characterized in that: the diaphragm protrudes toward the magnetic circuit system to form a voice coil fixing part, and the voice coil is fixed on the voice coil fixing part and faces the direction of the voice coil fixing part. the side of the magnetic circuit system.
  • the voice coil includes a voice coil body inserted into the magnetic gap and fixed to the voice coil fixing part and a lead wire extending from the voice coil body, and the voice coil fixing part is formed with a Gap for lead traces.
  • the voice coil fixing part includes a first voice coil fixing part and a second voice coil fixing part, and along the vibration direction of the diaphragm, the first voice coil fixing part is opposite to the second voice coil fixing part closer to the magnetic circuit system, the voice coil is fixed on the side of the first voice coil fixing part facing the magnetic circuit system, and the first voice coil fixing part and the second voice coil fixing part
  • the gap is formed by enclosing.
  • the diaphragm includes a diaphragm body and a dome, the outer periphery of the diaphragm body is fixed to the basin frame, the dome is fixed to the diaphragm body, and the voice coil fixing part is fixed from the dome
  • the protrusion is formed in the direction of the magnetic circuit system.
  • the membrane body has a cut hole covered by the dome, the voice coil fixing part divides the dome into an edge part and a center part spaced from the edge part, and the edge part is fixed on the inner periphery of the membrane body.
  • the dome is a metal plate, and the voice coil fixing portion is stamped and formed by the dome.
  • the vibrating membrane includes a membrane body and a dome, the outer periphery of the membrane body is fixed to the basin frame, the dome is fixed to the membrane body, and the voice coil fixing portion is fixed from the membrane body
  • the protrusion is formed in the direction of the magnetic circuit system.
  • the voice coil fixing portion is stamped and formed by the membrane body.
  • the magnetic circuit system includes a magnetic yoke fixed on the basin frame, a main magnetic steel fixed on the magnetic yoke, and a secondary magnetic steel arranged spaced apart from the main magnetic steel to form the magnetic gap,
  • the secondary magnetic steel includes two first secondary magnetic steels and two second secondary magnetic steels, and the two first secondary magnetic steels are respectively arranged on opposite sides of the long axis direction of the main magnetic steel.
  • the second secondary magnets are respectively disposed on opposite sides of the main magnet in the short axis direction.
  • an elastic support member is arranged between the first auxiliary magnet steel and the second auxiliary magnet steel, one end of the elastic support member is fixed to the basin frame, and the other end of the elastic support member is fixed to the voice coil away from the one side of the diaphragm.
  • the elastic support member includes a flexible circuit board and an auxiliary diaphragm
  • the flexible circuit board includes a holding portion fixed to the basin frame, a fixing portion fixed to the side of the voice coil away from the diaphragm
  • the elastic arm connecting the holding part and the fixing part, the auxiliary diaphragm includes a first part fixed on the side of the holding part away from the basin frame, a first part fixed on the fixing part away from the voice coil A second part of the side and a folded ring connecting the first part and the second part, the folded ring protruding in a direction away from the flexible circuit board.
  • the sound-generating device provided by the present invention forms a voice coil fixing part by protruding the vibrating film toward the magnetic circuit system, and the voice coil is fixed on the side of the voice coil fixing part facing the magnetic circuit system, so that the The voice coil is directly connected to the diaphragm, thereby eliminating the risk of poor bonding between the skeleton and the diaphragm, and reducing the assembly process of the sound-emitting device.
  • FIG. 1 is an exploded view of the sound-emitting device provided by the present invention.
  • FIG. 2 is a perspective view of the dome of the sounding device shown in FIG. 1 .
  • FIG. 3 is a schematic structural diagram of the partially assembled structure of the sound-emitting device shown in FIG. 1 .
  • FIG. 4 is a perspective view of the sounding device shown in FIG. 1 after being assembled.
  • FIG. 5 is a cross-sectional view of the sound-emitting device shown in FIG. 4 along the line A-A.
  • FIG. 6 is a cross-sectional view of the sound-emitting device shown in FIG. 4 taken along line B-B.
  • the sound-generating device includes a basin frame 1 , a vibration system 3 respectively fixed to the basin frame 1 , and a magnetic circuit system 5 having a magnetic gap 5A.
  • the magnetic circuit system 5 is used for driving The vibration system 3 vibrates and emits sound.
  • the vibrating system 3 includes a vibrating membrane 31 and a voice coil 33 fixed to the vibrating membrane 31 and inserted into the magnetic gap 5A to drive the vibrating membrane 31 to vibrate and produce sound.
  • the vibrating membrane 31 is fixed to the basin frame 1 So that the vibration system 3 is fixed to the basin frame 1 .
  • the voice coil 33 is electrically connected to an external circuit. After the voice coil 33 is energized, the voice coil 33 vibrates under the action of the magnetic field of the magnetic circuit system 5. At the same time, the voice coil 33 drives the The diaphragm 31 vibrates to produce sound.
  • the diaphragm 31 includes a diaphragm body 35 and a dome 37 .
  • the outer periphery of the diaphragm body 35 is fixed to the basin frame 1
  • the dome 37 is fixed to the diaphragm body 35 .
  • a voice coil fixing portion 39 is formed protruding in the direction of the magnetic circuit system 5 , and the voice coil 33 is fixed on the side of the voice coil fixing portion 39 facing the magnetic circuit system 5 .
  • the dome 37 and the voice coil fixing portion 39 thereon can be made of polymers, ceramics, metals and other materials through a molding process.
  • the dome 37 is a metal material
  • the voice coil fixing portion 39 on it can also be stamped and formed from a metal plate.
  • the dome 37 is a metal plate
  • the voice coil fixing portion 39 is stamped and formed by the dome 37 .
  • the membrane body 35 has a cut hole 351 covered by the dome 37 , and the voice coil fixing portion 39 divides the dome 37 into an edge portion 371 and is spaced from the edge portion 371 The central portion 373 is provided, and the edge portion 371 is fixed to the inner periphery of the membrane body 35 .
  • the edge portion 371 is located on the side of the membrane body 35 facing the magnetic circuit system 5 . Setting the edge portion 371 to be fixed on the side of the membrane body 35 facing the magnetic circuit system 5 is beneficial to reduce the height of the sound-emitting device along the vibration direction.
  • the edge portion 371 may also be set to be fixed on the side of the membrane body 35 away from the magnetic circuit system 5 , or the membrane body 35 may not be provided with any
  • the dome is fixed to the side of the membrane body facing the magnetic circuit system 5 , so that the voice coil fixing part can be fixed to the voice coil.
  • the membrane body is not provided with a cut hole
  • the dome is fixed on the side of the membrane body away from the magnetic circuit system
  • the voice coil fixing part is The film body is formed to protrude toward the direction of the magnetic circuit system.
  • the voice coil fixing portion may be configured to be stamped and formed by the membrane body.
  • the voice coil 33 includes a voice coil body 331 inserted into the magnetic gap 5A and fixed to the voice coil fixing portion 39 , and a lead wire 333 extending from the voice coil body 331 , and the voice coil fixing portion 39 is formed on the voice coil body 331 .
  • the setting of the notch 39A enables the voice coil 33 to be fixed to the voice coil fixing portion 39 , there is a channel for the lead wire 333 between the voice coil body 331 and the voice coil fixing portion 39 , so
  • the voice coil 33 is electrically connected to an external circuit through the lead wire 333 . This arrangement eliminates the risk of reducing the strength of the skeleton caused by the hole for the lead wire in the related art, and at the same time, the gap 39A is also beneficial to balance the air pressure in the sound-emitting device.
  • the voice coil fixing portion 39 has an annular structure.
  • the voice coil fixing part 39 includes a first voice coil fixing part 391 and a second voice coil fixing part 393.
  • the first voice coil fixing part 391 is opposite to the second voice coil
  • the fixing part 393 is closer to the magnetic circuit system 5
  • the voice coil 3 is fixed on the side of the first voice coil fixing part 391 facing the magnetic circuit system 5
  • the first voice coil fixing part 391 is connected to the magnetic circuit system 5 .
  • the second voice coil fixing portion 393 encloses the opening 39A.
  • the voice coil fixing portion can also be configured to be formed only by the first voice coil fixing portion, and correspondingly, the notch is formed by the first voice coil fixing portion and the dome enclosure.
  • the voice coil fixing part is configured to include a plurality of voice coil fixing part islands arranged at intervals, and the plurality of the voice coil fixing part islands are distributed in a ring structure, wherein two adjacent separation islands and a dome The gap is formed by enclosing.
  • the magnetic circuit system 5 includes a magnetic yoke 51 , a main magnetic steel 53 , a secondary magnetic steel 55 , a main pole core 57 and a secondary pole core 58 , and the main magnetic steel 53 and the auxiliary magnetic steel 55 are fixed to the magnetic yoke 51 , and the main magnetic steel 53 and the secondary magnetic steel 55 are spaced apart to form the magnetic gap 5A, and the main pole core 57 is stacked on a side of the main magnetic steel 53 away from the yoke 51 . side, the secondary pole core 58 is stacked on the side of the secondary magnetic steel 55 away from the yoke 51 , and the main pole core 57 is located in the through hole of the secondary pole core 58 and is connected to the main pole core 58 .
  • the pole core 57 is located on the same horizontal plane, and the magnetic yoke 51 and the secondary pole core 58 are fixed on the basin frame 1 to realize that the magnetic circuit system 5 is fixed on the basin frame 1 .
  • the main pole core 57 and the secondary pole core 58 are made of magnetically conductive material, so that the magnetic flux in the magnetic gap 5A can be enhanced.
  • the main magnetic steel 53 has a rectangular structure
  • the auxiliary magnetic steel 55 includes two first auxiliary magnetic steels 551 and two second auxiliary magnetic steels 553 , and the two first auxiliary magnetic steels 551 are respectively arranged in the On opposite sides of the main magnetic steel 53 in the long axis direction, the two second auxiliary magnetic steels 553 are respectively disposed on opposite sides in the short axis direction of the main magnetic steel 53 .
  • the supporting effect of the elastic support member 7 on the voice coil 33 can limit the swing of the voice coil 33 along the direction of its long axis, and improve the pure sound effect of the sounding device.
  • the elastic support 7 includes a flexible circuit board 71 and an auxiliary diaphragm 73 .
  • the flexible circuit board 71 includes a holding part 711 fixed to the basin frame 1 , a fixed part 713 fixed to the side of the voice coil 33 away from the diaphragm 1 , and connecting the holding part 711 and the fixed part Spring arm 715 of 713.
  • the flexible circuit board 71 plays the role of supporting and fixing the voice coil 33; shown), the elastic arm 715 is provided with a conductive path to electrically connect the holding portion 711 and the pads on the fixing portion 713, wherein the pads on the fixing portion 713 and the voice coil 33
  • the lead 333 is connected to electrically connect the voice coil 33, and the pad on the holding portion 711 is connected to an external circuit, so that the voice coil 33 is electrically connected to the external circuit through the flexible circuit board 71.
  • the electrical signal of the external circuit is transmitted to the voice coil 33 through the flexible circuit board 71 .
  • the auxiliary diaphragm 73 includes a first portion 731 fixed on the side of the holding portion 711 away from the basin frame 1 , a second portion 733 fixed on the side of the fixing portion 713 away from the voice coil 33 , and a connecting portion 733 .
  • the folded rings 735 of the first part 731 and the second part 733 protrude in a direction away from the flexible circuit board 71 .
  • a voice coil fixing part is formed by protruding the diaphragm toward the magnetic circuit system, and the voice coil is fixed on the side of the voice coil fixing part facing the magnetic circuit system, so that the voice coil is directly connected to the vibration coil.
  • the membrane is connected, thereby eliminating the risk of poor bonding between the frame and the diaphragm, and reducing the assembly process of the sound-emitting device.

Landscapes

  • 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

La présente invention concerne un dispositif de production de son. Le dispositif de production de son comprend un châssis, un système de vibration et un système de circuit magnétique ayant un entrefer magnétique, le système de vibration et le système de circuit magnétique étant fixés séparément au châssis. Le système de vibration comprend une membrane vibrante fixée au châssis et une bobine acoustique insérée dans l'entrefer magnétique et destinée à faire vibrer la membrane vibrante, produisant ainsi un son. La membrane vibrante fait saillie vers le système de circuit magnétique pour former une partie de fixation de bobine acoustique, et la bobine acoustique est fixée sur le côté de la partie de fixation de bobine acoustique faisant face au système de circuit magnétique. Le dispositif de production de son fourni par la présente invention permet non seulement d'éliminer le risque de mauvaise liaison entre le châssis et la membrane vibrante, mais aussi de réduire les processus d'assemblage.
PCT/CN2020/140066 2020-11-30 2020-12-28 Dispositif de production de son WO2022110457A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202022847196.1 2020-11-30
CN202022847196.1U CN213661921U (zh) 2020-11-30 2020-11-30 发声器件

Publications (1)

Publication Number Publication Date
WO2022110457A1 true WO2022110457A1 (fr) 2022-06-02

Family

ID=76688418

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/140066 WO2022110457A1 (fr) 2020-11-30 2020-12-28 Dispositif de production de son

Country Status (2)

Country Link
CN (1) CN213661921U (fr)
WO (1) WO2022110457A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105101022A (zh) * 2015-08-25 2015-11-25 歌尔声学股份有限公司 振动发声装置
US20170289693A1 (en) * 2016-01-26 2017-10-05 AAC Technologies Pte. Ltd. Voice coil assembly for speaker
CN109151673A (zh) * 2018-08-14 2019-01-04 瑞声科技(新加坡)有限公司 发声器件
CN110996226A (zh) * 2019-11-21 2020-04-10 瑞声科技(新加坡)有限公司 发声器件

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105101022A (zh) * 2015-08-25 2015-11-25 歌尔声学股份有限公司 振动发声装置
US20170289693A1 (en) * 2016-01-26 2017-10-05 AAC Technologies Pte. Ltd. Voice coil assembly for speaker
CN109151673A (zh) * 2018-08-14 2019-01-04 瑞声科技(新加坡)有限公司 发声器件
CN110996226A (zh) * 2019-11-21 2020-04-10 瑞声科技(新加坡)有限公司 发声器件

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Publication number Publication date
CN213661921U (zh) 2021-07-09

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