WO2022067986A1 - Dispositif de génération de son - Google Patents

Dispositif de génération de son Download PDF

Info

Publication number
WO2022067986A1
WO2022067986A1 PCT/CN2020/128278 CN2020128278W WO2022067986A1 WO 2022067986 A1 WO2022067986 A1 WO 2022067986A1 CN 2020128278 W CN2020128278 W CN 2020128278W WO 2022067986 A1 WO2022067986 A1 WO 2022067986A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
voice coil
skeleton
diaphragm
magnetic
Prior art date
Application number
PCT/CN2020/128278
Other languages
English (en)
Chinese (zh)
Inventor
宋威
令狐荣林
肖波
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 WO2022067986A1 publication Critical patent/WO2022067986A1/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
    • 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 utility model relates to the field of electro-acoustic conversion, in particular to a sound-emitting device used in electronic sound box products.
  • Sound-emitting devices also known as speakers or horns, are used in speakers to convert audio signals into sound for playback.
  • the sound-generating device of the related art includes a vibration system for vibrating and sounding, and a magnetic circuit system that drives the vibration system to vibrate and sound and has a magnetic gap.
  • the vibration system includes a vibrating membrane, inserted in the magnetic gap and driving the vibration.
  • the diaphragm vibrates a voice coil that produces sound and a skeleton connecting the voice coil and the diaphragm.
  • the present invention provides a sound-generating device, which includes a vibration system for vibrating and sounding, and a magnetic circuit system that drives the vibration system to vibrate and sound and has a magnetic gap.
  • a voice coil that is installed in the magnetic gap and drives the vibrating membrane to vibrate and sound
  • a skeleton that connects the voice coil and the vibrating membrane
  • the skeleton connecting arm includes a convex portion formed by protruding from the end of the skeleton body away from the vibrating film toward the magnetic circuit system, and the end of the convex portion away from the skeleton body along the sound.
  • the outer side of the ring is bent and extended toward the first extension portion close to the diaphragm, and a second extension portion is bent and extended from the end of the first extension portion away from the raised portion, and the second extension portion abuts being fixed on the side of the voice coil close to the diaphragm, the protruding part and the first extension part are abutted and fixed on the side of the voice coil close to the skeleton at the same time.
  • the voice coil has a racetrack-shaped structure with rounded corners
  • the frame connecting arms include four and each of the frame connecting arms is connected to the rounded corners of the voice coil.
  • each of the second extension parts of the frame connecting arm includes two and is symmetrically arranged with respect to the first extension part.
  • the orthographic projection of the second extension portion to the voice coil along the vibration direction of the diaphragm completely falls within the range of the voice coil.
  • the vibrating membrane includes a ring-shaped vibrating portion, an outer fold extending from the outer periphery of the vibrating portion, and an inner fold extending from the inner periphery of the vibrating portion, and the inner fold is far away from the vibrating portion.
  • One side of the vibration part is fixed to the magnetic circuit system, and the frame body is fixed to the side of the vibration part close to the voice coil.
  • 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 is abutted and fixed on the secondary magnetic steel unit, and the inner fold is away from the vibrating part one side is fixed to the magnetic bowl.
  • the sound-generating device further includes an auxiliary diaphragm assembly fixed to the frame body and the side of the basin frame close to the magnetic circuit system at the same time.
  • 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 cross-sectional view of the sound-emitting device of the present invention.
  • FIG. 4 is a schematic diagram of the assembly structure of the skeleton of the sound-emitting device and the voice coil of the present invention
  • the present invention provides a sound-generating device 100, which includes a basin frame 1, a vibration system 2 supported and fixed on the basin frame 1, and a vibration system 2 that drives the vibration system 2 to vibrate and emit sound and has a magnetic gap 30 of the magnetic circuit system 3.
  • the vibration system 2 may also be fixed to the magnetic circuit system 3 , and is not limited to being fixed to the basin frame 1 .
  • One end of the frame 23 is connected to the ball diaphragm 21 , and the other end of the frame 23 is connected to the voice coil 22 .
  • the frame 23 includes a frame body 231 attached to the side of the diaphragm 21 close to the voice coil 22 , and the end of the frame body 231 away from the diaphragm 21 is bent toward the magnetic gap 30 .
  • the frame body 231 is folded and extended and connected to the frame connecting arm 232 of the voice coil 22 , and the frame body 231 is fixed to the side of the vibration part 211 close to the voice coil 22 .
  • the frame connecting arm 232 and the voice coil 22 are glued and fixed.
  • the skeleton 23 is added with a skeleton connecting arm 232 connected to the voice coil 22, and further, a raised portion 2321 is added, that is, the gluing area between the voice coil 22 and the skeleton 23 is increased, and the combination of the voice coil 22 and the skeleton 23 is increased. It can improve the bonding strength between the skeleton 23 and the voice coil 22, which can improve the problem of separation of the voice coil 22 and the skeleton 23 when the sound generating device 100 vibrates and emits sound with high power, and has better reliability.
  • the frame body 231 is annular, and the frame connecting arms 232 include a plurality of and are symmetrically arranged on the inner side of the frame body 231 .
  • the frame connecting arms 232 include four and each of the frame connecting arms 232 is connected to the fillet of the voice coil 22 ; the second extending portion 2323 of each of the frame connecting arms 232 includes The two are arranged symmetrically with respect to the first extension portion 2322 .
  • the orthographic projection of the second extension portion 2323 along the vibration direction of the diaphragm 21 to the voice coil 22 completely falls within the range of the voice coil 22 , that is, in the case of ensuring the glued area of the voice coil 22 and the skeleton 23 Therefore, the material and volume of the skeleton connecting arm 232 are reduced, the cost is reduced, and the space utilization rate is better.
  • the auxiliary diaphragm assembly 24 is fixed to the frame body 231 and the side of the basin frame 1 close to the magnetic circuit system 3 at the same time.
  • the magnetic circuit system 3 includes a magnetic yoke 31 fixed to the basin frame 1 , a main magnetic steel unit 32 fixed to the magnetic yoke 31 , a main magnetic steel unit 32 arranged at intervals around the main magnetic steel unit 32 and connected to the main magnetic steel.
  • the units 32 together form the secondary magnetic steel unit 33 of the magnetic gap 30 and the magnetic bowl 34 covered on the main magnetic steel unit 32.
  • the peripheral side of the magnetic bowl 34 is abutted and fixed to the secondary magnetic steel unit 33, A side of the inner ring 213 away from the vibrating portion 211 is fixed to the magnetic bowl 34 .
  • the skeleton connecting arm 232 extends through the gap between the magnetic bowl 34 and the secondary magnetic steel unit 33 to the magnetic gap 30 and is connected to the voice coil 22 in turn.
  • the skeleton connecting arm includes a protruding portion formed by the end of the skeleton body away from the vibrating membrane protruding toward the magnetic circuit system, and the One end of the protruding portion away from the skeleton body is extended along the outer side of the voice coil and is close to the first extension portion bent and extended by the diaphragm, and the end of the first extension portion away from the protruding portion is bent and extended the second extension part, the second extension part is abutted and fixed on the side of the voice coil close to the diaphragm, the convex part and the first extension part are abutted and fixed on the voice coil at the same time It is close to the side of the skeleton; that is, adding a raised part increases the gluing area of the voice coil and the skeleton, improves the bonding force between the voice coil and the skeleton, and enhances the bonding strength of the skeleton and the voice coil, which can

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 de génération de son, qui comprend un système de vibration utilisé pour vibrer et générer du son et un système de circuit magnétique utilisé pour entraîner le système de vibration afin de vibrer et de générer du son et muni d'un entrefer magnétique. Le système de vibration comprend une membrane, une bobine acoustique insérée dans l'entrefer magnétique et entraînant la membrane pour qu'elle vibre et génère un son, et un cadre pour connecter la bobine acoustique et la membrane. L'armature comprend un corps d'armature et un bras de connexion d'armature plié et s'étendant depuis le corps d'armature. Le bras de connexion d'armature comprend une partie en saillie formée par des moyens faisant saillie à partir d'une extrémité du corps d'armature à l'écart de la membrane, pour s'approcher du système de circuit magnétique ; une première partie d'extension courbée et s'étendant à partir d'une extrémité de la partie en saillie à l'écart du corps d'armature, vers la membrane le long d'un côté extérieur de la bobine acoustique ; et une seconde partie d'extension courbée et s'étendant depuis une extrémité de la première partie d'extension à l'écart de la partie de saillie, dans laquelle la seconde partie d'extension vient en butée de manière fixe contre un côté de la bobine acoustique proche de la membrane, et la partie de saillie et la première partie d'extension viennent toutes deux en butée de manière fixe contre le côté de la bobine acoustique proche de l'armature. Par rapport à l'art apparenté, le dispositif de génération de son du présent modèle d'utilité est plus fiable.
PCT/CN2020/128278 2020-09-30 2020-11-12 Dispositif de génération de son WO2022067986A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202022219125.7 2020-09-30
CN202022219125.7U CN213462267U (zh) 2020-09-30 2020-09-30 发声器件

Publications (1)

Publication Number Publication Date
WO2022067986A1 true WO2022067986A1 (fr) 2022-04-07

Family

ID=76286782

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/128278 WO2022067986A1 (fr) 2020-09-30 2020-11-12 Dispositif de génération de son

Country Status (2)

Country Link
CN (1) CN213462267U (fr)
WO (1) WO2022067986A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN208112933U (zh) * 2018-04-25 2018-11-16 歌尔科技有限公司 发声装置以及电子设备
CN210641017U (zh) * 2019-10-11 2020-05-29 瑞声科技(新加坡)有限公司 发声器件
CN210899594U (zh) * 2019-11-25 2020-06-30 深圳市信维声学科技有限公司 支撑骨架及微型扬声器
US20200213765A1 (en) * 2018-12-30 2020-07-02 AAC Technologies Pte. Ltd. Sound Generator
CN111641906A (zh) * 2020-06-24 2020-09-08 瑞声科技(新加坡)有限公司 发声器件

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN208112933U (zh) * 2018-04-25 2018-11-16 歌尔科技有限公司 发声装置以及电子设备
US20200213765A1 (en) * 2018-12-30 2020-07-02 AAC Technologies Pte. Ltd. Sound Generator
CN210641017U (zh) * 2019-10-11 2020-05-29 瑞声科技(新加坡)有限公司 发声器件
CN210899594U (zh) * 2019-11-25 2020-06-30 深圳市信维声学科技有限公司 支撑骨架及微型扬声器
CN111641906A (zh) * 2020-06-24 2020-09-08 瑞声科技(新加坡)有限公司 发声器件

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CN213462267U (zh) 2021-06-15

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