WO2022067988A1 - Dispositif de production de son - Google Patents

Dispositif de production de son Download PDF

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Publication number
WO2022067988A1
WO2022067988A1 PCT/CN2020/128280 CN2020128280W WO2022067988A1 WO 2022067988 A1 WO2022067988 A1 WO 2022067988A1 CN 2020128280 W CN2020128280 W CN 2020128280W WO 2022067988 A1 WO2022067988 A1 WO 2022067988A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic
voice coil
frame
fixed
skeleton
Prior art date
Application number
PCT/CN2020/128280
Other languages
English (en)
Chinese (zh)
Inventor
宋威
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 WO2022067988A1 publication Critical patent/WO2022067988A1/fr

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00Diaphragms for electromechanical transducers; Cones
    • H04R7/02Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12Non-planar diaphragms or cones
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00Diaphragms for electromechanical transducers; Cones
    • H04R7/16Mounting or tensioning of diaphragms or cones
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02Details
    • H04R9/04Construction, mounting, or centering of coil
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06Loudspeakers

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, a vibration system respectively fixed to the basin frame, and a magnetic circuit system for driving the vibration system to vibrate and produce sound.
  • a voice coil and a skeleton for fixing the diaphragm to the voice coil, the skeleton includes a skeleton body in a ring shape and fixed on the diaphragm, from the end of the skeleton body away from the diaphragm to the a ring-shaped skeleton extension part bent and extended in the direction of the voice coil and a skeleton fixing part bent and extended by the skeleton extension part and fixed to the voice coil; the skeleton extension part and the skeleton fixing part together enclose a hollow space area, which together form a hollow area, and the voice coil is arranged in the hollow area.
  • the voice coil of the related art sound-generating device drives the diaphragm to vibrate and emit sound
  • the voice coil repeatedly moves back and forth in the vibration direction of the vibration since the voice coil repeatedly moves back and forth in the vibration direction of the vibration, the skeleton connected to the voice coil is easily
  • the swing phenomenon occurs in the vibration, which directly causes the torsion phenomenon of the skeleton extension.
  • the skeleton extension makes the sound-emitting device low in reliability and affects the sound-emitting effect of the diaphragm, resulting in poor acoustic performance of the sound-emitting device. Especially the high frequency performance is poor.
  • the purpose of the utility model is to provide a sound-emitting device with high reliability and good high-frequency performance.
  • the present invention provides a sound-generating device, which includes a vibration system and a magnetic circuit system that drives the vibration system to vibrate and sound, and the vibration system includes a vibrating membrane and a voice coil that drives the vibration membrane to vibrate and sound. and a skeleton for fixing the diaphragm on the voice coil, the skeleton includes a skeleton body in a ring shape and fixed on the diaphragm, and a skeleton from the end of the skeleton body away from the diaphragm to the voice coil.
  • the magnetic circuit system includes a magnetic yoke, a main magnetic steel fixed to the magnetic yoke and a secondary magnetic steel surrounding the main magnetic steel, the secondary magnetic steel and the main magnetic steel are spaced to form a magnetic gap, so The voice coil is inserted into the magnetic gap, the skeleton flange part and the skeleton fixing part together form a hollow area, and the voice coil, the main magnetic steel and the auxiliary magnetic steel are all arranged in the hollow area .
  • the frame flange portion has an arc-shaped structure and is formed by bending and extending the inner peripheral edge of the frame extending portion toward the diaphragm.
  • the skeleton body is provided with a through hole passing through the position facing the skeleton flange portion.
  • the skeleton flange part and the skeleton extension part are recessed together in a direction away from the auxiliary magnet to form an escape groove, and the auxiliary magnet is located in the escape groove and is spaced from the skeleton flange part set up.
  • the voice coil has a rectangular structure with rounded corners;
  • the auxiliary magnets include four, two of the auxiliary magnets are arranged at intervals on opposite sides of the long axis of the voice coil, and the other two are The auxiliary magnets are arranged at intervals on opposite sides of the short axis of the voice coil;
  • the frame fixing parts include four, and each frame fixing part is fixed to a circle on the side of the voice coil close to the diaphragm. corner position.
  • the skeleton fixing part includes a first section that is bent along the outer peripheral side of the voice coil by the skeleton extending part, and a first section that is bent and extended from the first section and is fixed to the voice coil close to the vibration coil.
  • the opposite sides of the first segment are respectively connected with two adjacent flange portions of the skeleton to form an integral body.
  • the magnetic circuit system further comprises a magnetic conducting plate covering the side of the main magnet steel far from the yoke, the magnetic conducting plate comprising a magnetic conducting plate body fixed on the main magnet steel, The peripheral edge of the magnetic conductive plate body is bent and extended in the direction of the magnetic yoke, and the magnetic conductive plate side wall is bent and extended from the magnetic conductive plate side wall to the direction away from the main magnet steel.
  • the magnetic conductive plate fixing part is fixed on the side of the secondary magnetic steel away from the yoke, the diaphragm is arranged around the side wall of the magnetic conductive plate, and the inner peripheral side of the diaphragm is connected to the the side wall of the magnetic conductive plate, the fixing part of the magnetic conductive plate is located in the escape groove and is spaced from the flange part of the frame.
  • the sound-generating device further includes a basin frame, the magnetic yoke is fixed to the basin frame, the diaphragm is annular, the outer peripheral side of the diaphragm is fixed to the basin frame, and the diaphragm includes An annular first folded ring portion, an annular second folded ring portion surrounding the first folded ring portion and spaced apart from each other, from the outer peripheral side of the first folded ring portion to the second folded ring a first vibrating part that is bent and extended from the inner circumference of the second folded ring part; a first fixed part bent and extended from the side, a second fixed part bent and extended from the outer peripheral side of the second folded ring part, and covered respectively on the side of the first vibration part close to the yoke and on the side of the yoke
  • the second vibration part is close to the top of the ball on one side of the yoke, the first fixed part is fixed to the magnetic circuit system, the frame body is fixed to the top of the ball, and the second fixed part is fixed to the
  • the skeleton further includes a skeleton reinforcement portion bent and extended from the side of the skeleton body away from the magnetic yoke, and the skeleton reinforcement portion is fixed on the top of the ball.
  • the vibration system further includes an elastic support assembly spaced from the diaphragm; one end of the elastic support assembly is fixed to the basin frame, and the other end of the elastic support assembly is fixed to the frame extension portion.
  • the sound-emitting device of the present invention forms a skeleton flange portion by bending and extending the inner periphery of the annular skeleton extension portion of the skeleton, so that the skeleton flange portion forms a ring-shaped flanging structure,
  • the skeleton flange part, the skeleton extension part and the skeleton body form a U-shaped structure, which avoids the vibration of the skeleton connected by the voice coil, which directly causes the torsion of the skeleton extension part, and the U-shaped structure formed by the skeleton flange part.
  • the shape structure improves the reliability of the sound-emitting device, and makes the sound-emitting effect of the diaphragm, thereby improving the acoustic performance of the sound-emitting device, especially the high-frequency performance of the sound-emitting device.
  • 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 B in Fig. 3;
  • FIG. 5 is a schematic three-dimensional structure diagram of the skeleton of the sound-emitting device of the present invention.
  • FIG. 6 is a schematic diagram of the three-dimensional structure assembly of the skeleton, the voice coil, the main magnetic steel and the auxiliary magnetic steel of the sound-emitting device of the present invention.
  • the present invention provides a sound-generating device 100
  • the sound-generating device 100 includes a basin frame 1, a vibration system 2 respectively fixed to the basin frame 1, and driving the vibration system 2 to vibrate and emit sound
  • the magnetic circuit system 3 has a magnetic gap 30 and a magnetic yoke 31 fixed to the basin frame 1 .
  • the vibration system 2 includes a diaphragm 21 , a voice coil 22 , a frame 23 and an elastic support component 24 .
  • the diaphragm 21 is annular and is arranged around the magnetic circuit system 3 .
  • the outer peripheral side of the diaphragm 21 is fixed to the basin frame 1 .
  • the inner peripheral side of the diaphragm 21 surrounds and is connected to the magnetic circuit system 3 .
  • the diaphragm 21 includes an annular first folded ring portion 211, an annular second folded ring portion 212 that surrounds the first folded ring portion 211 and is spaced from each other, and is formed by the first folded ring portion 212.
  • the first vibrating portion 213 , the outer peripheral side of the ring portion 211 is bent and extended toward the second folding ring portion 212 , and the first vibration portion 213 is bent and extended from the inner peripheral side of the second folding ring portion 212 to the first folding ring portion 211 .
  • the first fixing portion 214 is fixed to the magnetic circuit system 3
  • the second fixing portion 216 is fixed to the basin frame 1 .
  • the first vibrating part 213 is connected to the second vibrating part 215 .
  • This structure makes the first vibrating part 213 , the second vibrating part 215 and the ball top 217 form an integrated structure, so that the acoustic performance of the vibrating membrane 21 is good, and at the same time, it can prevent the vibration caused by vibration. Layered.
  • the voice coil 22 drives the diaphragm 21 to vibrate and produce sound.
  • the voice coil 22 has a rectangular structure with rounded corners.
  • the voice coil 22 is inserted into the magnetic gap 30 .
  • the skeleton 23 is annular.
  • the diaphragm 21 is fixed to the voice coil 22, so that the voice coil 22 drives the diaphragm 21 to vibrate and produce sound.
  • the frame 23 includes a frame body 231 , a frame extension portion 232 , a frame fixing portion 233 , a frame flange portion 234 and a frame reinforcing portion 235 .
  • the skeleton body 231 is annular. One end of the frame body 231 is fixed to the diaphragm 21 , and the opposite end of the frame body 231 is fixed to the elastic support component 24 . Specifically, the frame body 231 is fixed to the ball top 217 .
  • the skeleton extension portion 232 is annular.
  • the frame extending portion 232 is formed by bending and extending an end of the frame body 231 away from the diaphragm 21 toward the voice coil 22 .
  • the frame fixing portion 233 is formed by bending and extending the frame extending portion 232 .
  • the frame fixing portion 233 is fixed to the voice coil 22 .
  • the frame fixing portion 233 includes four, and each frame fixing portion 233 is fixed to a rounded position on the side of the voice coil 22 close to the diaphragm 21 . This structure enables the bobbin 23 to be connected to the voice coil 22 without occupying the position of the magnetic gap 30 , so that the magnetic field driving force of the magnetic circuit system 3 is strong.
  • the frame fixing portion 233 includes a first section 2331 that is bent along the outer circumference of the voice coil 22 by the frame extending portion 232 , and a first section 2331 that is bent and extended from the first section 2331 and is fixed near the voice coil 22 .
  • the second segment 2332 on one side of the diaphragm 21 .
  • the frame flange portion 234 is formed by bending and extending the inner peripheral edge of the frame extending portion 232 .
  • the frame flange portion 234 is formed by bending and extending the inner peripheral edge of the frame extending portion 232 in the direction of the diaphragm 21 .
  • the opposite sides of the first segment 2331 are respectively connected with two adjacent frame flange portions 234 to form an integral body.
  • the structure is formed such that the frame extending portion 232 forms a ring-shaped flanging structure, that is, the frame flange portion 234 is formed to form a ring-shaped flange structure.
  • the frame flange portion 234 and the frame extending portion 232 And the skeleton body 231 forms a U-shaped structure, which prevents the skeleton 23 connected to the voice coil 22 from swinging in vibration, which directly causes the skeleton extension 232 to twist.
  • the U-shaped structure formed by the flange portion 234 improves the reliability of the sound-emitting device 100 and enables the sound-emitting effect of the diaphragm 21 to improve the acoustic performance of the sound-emitting device 100 , especially the sound-emitting device 100 excellent high frequency performance.
  • the frame flange portion 234 has an arc-shaped structure.
  • this structure effectively improves the torsion state of the frame flange portion 234 , so that the sounding device 100 is High reliability.
  • the frame flange portion 234 and the frame fixing portion 233 together form a hollow area 230 .
  • the hollow area 230 is used for accommodating the voice coil 22 and the components of the magnetic circuit system 3 , so that the sound generating device 100 is light and thin.
  • the position of the frame body 231 facing the frame flange portion 234 is provided with a through hole 2310 therethrough.
  • the through hole 2310 balances the air pressure in the cavity formed on the side of the frame 23 close to the voice coil 22 and the air pressure in the cavity formed by the frame 23 and the basin frame 1 .
  • the through hole 2310 and the skeleton flange portion 234 are disposed directly opposite, so that the skeleton flange portion 234 receives the deformation pressure generated by the swinging force of the voice coil 22, and can pass through the through hole
  • the differential air pressure between the inside and outside of the 2310 is released, so that the risk of twisting of the skeleton flange portion 234 is reduced, so that the reliability of the sounding device 100 is high, and the high-frequency performance of the sounding device 100 is excellent.
  • the frame reinforcement portion 235 is bent and extended from the side of the frame body 231 away from the yoke 31 .
  • the frame reinforcement portion 235 is fixed to the ball top 217 .
  • This structure increases the bonding and fixing area of the frame 23 and the diaphragm 21 , so that the reliability of the fixing of the frame body 231 and the diaphragm 21 is higher.
  • the elastic support component 24 is spaced apart from the diaphragm 21 .
  • One end of the elastic support element 24 is fixed to the basin frame 1 , and the other end is fixed to the frame 23 .
  • the elastic support assembly 24 is used to balance the vibration of the voice coil 22 , and the support of the voice coil 22 by the elastic support assembly 24 is more stable and the vibration reliability is better.
  • the second upper folding ring portion 212 is disposed opposite to the elastic support component 24 . This structure makes the acoustic performance of the vibrating membrane 21 sound good.
  • the elastic support components 24 include two and are respectively disposed on opposite sides of the voice coil 22.
  • the two symmetrical elastic support components 24 support the voice coil 22 more stably, preventing The swing of the voice coil 22 is better, and the vibration reliability is better.
  • the magnetic circuit system 3 includes a magnetic yoke 31 , a main magnetic steel 32 , a secondary magnetic steel 33 , and a magnetic conducting plate 34 covering the side of the main magnetic steel 32 away from the magnetic yoke 31 .
  • the yoke 31 is fixed to the basin frame 1 .
  • the ball tops 217 are respectively covered on the side of the first vibrating part 213 close to the yoke 31 and the side of the second vibrating part 215 close to the yoke 31 .
  • the first folding ring portion 211 has an arc-shaped structure formed by concave in a direction away from the yoke 31
  • the second folding ring portion 212 is formed by an arc formed by a depression in a direction close to the magnetic yoke 31 . shape structure.
  • This structure makes the arc-shaped structure of the first folded ring portion 211 and the arc-shaped structure of the second folded ring portion 212 arranged in opposite directions, so that the acoustic performance of the vibration and sound of the diaphragm 21 is good, and at the same time The risk of delamination of the first folded ring portion 211 and the second folded ring portion 212 due to too large vibration amplitude is prevented, thereby improving the reliability of the diaphragm 21 .
  • the first folding ring portion 211 may also be an arc-shaped structure formed by concave in the direction close to the magnetic yoke 31 .
  • the main magnet 32 is fixed to the yoke 31 .
  • the main magnetic steel 32 includes an upper main magnetic steel 321 , a main pole core 322 and a lower main magnetic steel 323 stacked in sequence along the vibration direction of the diaphragm 21 , and the lower main magnetic steel 323 is fixed to the The yoke 31 is described.
  • the main magnetic steel 323 is set as two magnetic steel structures of the upper main magnetic steel 321 and the lower main magnetic steel 323.
  • the arrangement of the two magnetic steel structures can enhance the driving force of the magnetic field lines of the magnetic gap 30, so that the As many magnetic lines of force of the magnetic circuit system 3 are cut as possible by the voice coil 22 to form a larger space for the magnetic circuit of the driving force.
  • this structure increases the depth of the magnetic gap 30 through the main pole core 322, that is, the depth of the formed magnetic gap 30 is the sum of the thicknesses of the three components of the upper main magnetic steel 321, the main pole core 322 and the lower main magnetic steel 323, thereby While ensuring the driving force of the magnetic lines of force of the magnetic gap 30 , the voice coil 22 has a wide movement range within the magnetic gap 30 , so that the sensitivity of the sounding device 100 is high, and the acoustic performance of the sounding device 100 is excellent.
  • the projection of the upper main magnet 321 to the yoke 31 , the projection of the main pole core 322 to the yoke 31 , and the projection of the lower main magnet 321 to the yoke 31 are completely coincident.
  • This structure enables the main magnetic steel 32 to form an integrated structure, so that the magnetic field in the magnetic gap 30 is more balanced, and at the same time, it is easier to manufacture and assemble.
  • the secondary magnet 33 is fixed to the yoke 31 .
  • the secondary magnet 33 surrounds the main magnet 32 .
  • the secondary magnetic steel 33 is spaced apart from the main magnetic steel 32 to form a magnetic gap 30 , and the voice coil 22 is inserted into the magnetic gap 30 .
  • the voice coil 22 , the main magnetic steel 32 and the secondary magnetic steel 33 are all disposed in the hollow area 230 .
  • This structure is beneficial to the lightening and thinning of the sound-emitting device 100 .
  • the skeleton flange portion 234 and the skeleton extension portion 232 together move away from the auxiliary
  • the direction of the magnetic steel 33 is recessed to form an escape groove 2340
  • the auxiliary magnetic steel 33 is located in the escape groove 2340 and is spaced from the frame flange portion 234 .
  • the setting of the avoidance slot 2340 can optimize the internal space optimization of the sound-emitting device 100 , so that the skeleton 23 does not affect the volume of the magnetic gap 30 , so that the magnetic driving force of the magnetic circuit system 3 is strong, thereby Therefore, the acoustic performance of the sound-emitting device 100 is good.
  • the magnetic conductive plate 34 is covered with the main magnetic steel 32 away from the magnetic yoke 31 .
  • the magnetic conductive plate 34 includes a magnetic conductive plate body 341 and a magnetic conductive plate side wall 342 that is bent and extended from the peripheral edge of the magnetic conductive plate body 341 to the direction of the magnetic yoke 31 .
  • the diaphragm 21 is disposed around the side wall 342 of the magnetic conductive plate. The inner peripheral side of the diaphragm 21 is connected to the side wall 342 of the magnetic conductive plate.
  • the magnetic conductive plate 34 is set in a flat plate shape, and the magnetic conductive plate 34 covers the main magnetic steel 32 and the magnetic gap 30 .
  • the magnetic conductive plate 34 is in contact with the main magnetic steel 32 .
  • the magnetic conductive plate 34 is attached and fixed to the side of the main magnetic steel 32 away from the magnetic yoke 31 .
  • the main magnetic steel 32 is attached and fixed to the magnetic conductive plate body 341 .
  • the magnetic conductive plate 34 further includes a conductive plate that is bent and extended from the side wall 342 of the magnetic conductive plate in a direction away from the main magnetic steel 32 .
  • Magnetic plate fixing part 343 The magnetic conductive plate fixing portion 343 is fixed to the side of the secondary magnetic steel 33 away from the magnetic yoke 31 .
  • the main magnetic steel 32 and the auxiliary magnetic steel 33 are formed into one body by providing the magnetic conducting plate fixing portion 343 , so that the intensity of the magnetic field is higher.
  • the magnetic conductive plate fixing portion 343 is located in the escape groove 2340 and is spaced apart from the frame flange portion 234 .
  • the frame 23 does not affect the volume of the magnetic gap 30 , so that the magnetic driving force of the magnetic circuit system 3 is strong, so that the acoustic performance of the sound-emitting device 100 is good.
  • the diaphragm 21 is disposed around the side wall 342 of the magnetic conductive plate.
  • the inner peripheral side of the diaphragm 21 is connected to the side wall 342 of the magnetic conductive plate.
  • the main magnetic steel 32 has a rectangular structure.
  • the auxiliary magnetic steels 33 include four, two of the auxiliary magnetic steels 33 are arranged on opposite sides of the long axis of the voice coil 22 at intervals, and the other two auxiliary magnetic steels 33 are arranged at intervals on the voice coil. 22 on opposite sides of the short axis.
  • the magnetic conductive plate fixing portions 343 include four, and the magnetic conductive plate fixing portions 343 are in one-to-one correspondence with the auxiliary magnetic steel 33 .
  • the sound-emitting device of the present invention forms a skeleton flange portion by bending and extending the inner periphery of the annular skeleton extension portion of the skeleton, so that the skeleton flange portion forms a ring-shaped flanging structure,
  • the skeleton flange part, the skeleton extension part and the skeleton body form a U-shaped structure, which avoids the vibration of the skeleton connected by the voice coil, which directly causes the torsion of the skeleton extension part, and the U-shaped structure formed by the skeleton flange part.
  • the shape structure improves the reliability of the sound-emitting device, and makes the sound-emitting effect of the diaphragm, thereby improving the acoustic performance of the sound-emitting device, especially the high-frequency performance of the sound-emitting device.

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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)

Abstract

Le modèle d'utilité concerne un dispositif de production de son, comprenant un système de vibration et un système de circuit magnétique. Le système de vibration comprend une membrane, une bobine acoustique conçue pour entraîner la membrane de manière à la faire vibrer et produire un son, et une structure conçue pour fixer la membrane à la bobine acoustique. La structure comprend un corps de structure annulaire fixé à la membrane, une extension de structure annulaire conçue pour se courber et s'étendre depuis l'extrémité du corps de structure à l'opposé de la membrane vers la bobine acoustique, une partie de fixation de structure conçue pour se courber et s'étendre depuis l'extension de structure et fixée à la bobine acoustique, et une bride de structure conçue pour se courber et s'étendre depuis une périphérie intérieure de l'extension de structure. Le système de circuit magnétique comprend une culasse magnétique, un acier magnétique primaire fixé à la culasse magnétique, et un acier magnétique secondaire entourant l'acier magnétique primaire. L'acier magnétique secondaire et l'acier magnétique primaire sont espacés pour former un entrefer magnétique, et la bobine acoustique est insérée dans l'entrefer magnétique. La bride de structure et la partie de fixation de structure entourent conjointement une zone creuse, et la bobine acoustique, l'acier magnétique primaire et l'acier magnétique secondaire sont disposés dans la zone creuse. Par rapport à l'état de la technique, le dispositif de production de son présente une fiabilité élevée et une bonne performance haute fréquence.
PCT/CN2020/128280 2020-09-30 2020-11-12 Dispositif de production de son WO2022067988A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202022223310.3U CN213661916U (zh) 2020-09-30 2020-09-30 发声器件
CN202022223310.3 2020-09-30

Publications (1)

Publication Number Publication Date
WO2022067988A1 true WO2022067988A1 (fr) 2022-04-07

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CN (1) CN213661916U (fr)
WO (1) WO2022067988A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114501250B (zh) * 2021-12-31 2024-03-12 歌尔股份有限公司 电子设备
CN219107637U (zh) * 2022-12-22 2023-05-30 瑞声光电科技(常州)有限公司 发声器件
CN117915248B (zh) * 2024-03-20 2024-05-14 瑞声光电科技(常州)有限公司 一种发声装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019137192A1 (fr) * 2018-01-10 2019-07-18 歌尔股份有限公司 Appareil d'émission sonore
CN111405427A (zh) * 2019-12-27 2020-07-10 瑞声科技(新加坡)有限公司 发声器件
CN111405431A (zh) * 2019-12-27 2020-07-10 瑞声科技(新加坡)有限公司 发声器件及其扬声器箱
CN111405421A (zh) * 2019-12-27 2020-07-10 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
WO2019137192A1 (fr) * 2018-01-10 2019-07-18 歌尔股份有限公司 Appareil d'émission sonore
CN111405427A (zh) * 2019-12-27 2020-07-10 瑞声科技(新加坡)有限公司 发声器件
CN111405431A (zh) * 2019-12-27 2020-07-10 瑞声科技(新加坡)有限公司 发声器件及其扬声器箱
CN111405421A (zh) * 2019-12-27 2020-07-10 瑞声科技(新加坡)有限公司 发声器件

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