WO2022007175A1 - Dispositif de production de son - Google Patents

Dispositif de production de son Download PDF

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Publication number
WO2022007175A1
WO2022007175A1 PCT/CN2020/114324 CN2020114324W WO2022007175A1 WO 2022007175 A1 WO2022007175 A1 WO 2022007175A1 CN 2020114324 W CN2020114324 W CN 2020114324W WO 2022007175 A1 WO2022007175 A1 WO 2022007175A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
skeleton
voice coil
magnetic
generating device
Prior art date
Application number
PCT/CN2020/114324
Other languages
English (en)
Chinese (zh)
Inventor
严绪东
邵涛
顾小江
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 WO2022007175A1 publication Critical patent/WO2022007175A1/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
    • H04R9/02—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
    • H04R9/06—Loudspeakers

Definitions

  • 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 voice coil is only glued and fixed with one end of the skeleton or its side, and the glued area is small, which leads to the high-power vibration and sound of the sound-emitting device, and the voice coil and the skeleton are easily separated. , the reliability is not good.
  • the purpose of the utility model is to provide a sound device with better reliability.
  • 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 arranged in the magnetic gap and drives the vibrating membrane to vibrate and sound, and a skeleton connecting the voice coil and the vibrating membrane, the skeleton includes a side attached to the vibrating membrane close to the voice coil
  • the skeleton body at least two mutually spaced skeleton support arms bent and extended from the end of the skeleton body away from the diaphragm to the magnetic gap, and the end of the skeleton support arm away from the skeleton body along the
  • the skeleton connecting arms extending from the outer periphery of the voice coil include at least two skeleton connecting arms and are spaced apart from each other, and the skeleton connecting arms are fixedly connected with the voice coil.
  • the skeleton connecting arm is symmetrically arranged with respect to the skeleton supporting arm, and the skeleton supporting arm is arranged around the voice coil and is abutted and fixed on the outer peripheral side of the voice coil.
  • the frame connecting arm is fixed on the side of the voice coil close to the diaphragm.
  • the orthographic projection of the skeleton connecting arm to the voice coil along the vibration direction of the diaphragm completely falls within the range of the voice coil.
  • the skeleton support arm includes a first section bent and extended from the skeleton body toward the magnetic gap, and the first section is bent along the outer side of the voice coil in a direction close to the diaphragm
  • the extended second segment, one end of the second segment away from the first segment is connected to the outer side of the frame connecting arm to form an avoidance step.
  • each of the frame connecting arm and the frame supporting arm includes three and is arranged at equal distances from each other.
  • the skeleton body is annular
  • the diaphragm includes a first annular portion and a second annular portion
  • the first annular portion surrounds the second annular portion
  • the skeleton body is located between the first folding ring part and the second folding ring part, and the outer side of the skeleton body is connected with the first folding ring part, and the skeleton body is The inner side is connected with the second folding ring part.
  • the sound-generating device further includes a basin frame for supporting and fixing the magnetic circuit system and the vibration system, and the outer side of the first folded ring portion and the inner side of the second folded ring portion are both fixed to the Describe the basin rack.
  • the basin frame includes a first surrounding wall with a receiving space, a second surrounding wall surrounding the first surrounding wall and spaced from the first surrounding wall, and connecting the first surrounding wall and the connecting wall of the second enclosure wall, the magnetic circuit system is accommodated in the accommodation space, the outer side of the first folded ring portion and the inner side of the second folded ring portion are respectively fixed to the second enclosure
  • the upper end of the wall and the first surrounding wall, the first surrounding wall is provided with an escape portion passing through it and used for avoiding the frame support arm.
  • the sound-generating device further comprises a sealing ring which is press-fitted on the inner side of the second folded ring portion away from the basin frame and is arranged around the periphery of the magnetic circuit system.
  • the magnetic circuit system includes a first magnetic bowl, a magnetic steel unit accommodated and fixed in the first magnetic bowl, and a second magnetic bowl covered on the magnetic steel unit, the magnetic steel unit is connected to the magnetic steel unit.
  • the first magnetic bowl is spaced to form the magnetic gap
  • the first magnetic bowl and the second magnetic bowl are both provided with a gap passing through them and used to avoid the frame support arm, and the sealing ring surrounds the The peripheral edge of the second magnetic bowl is provided.
  • the voice coil includes a voice coil lead extending outward along the side of the bobbin close to the magnetic circuit system, and the bobbin further includes a side of the bobbin away from the vibrating membrane that is close to the vibrating diaphragm. A groove formed by a depression of the membrane, and the voice coil lead is accommodated in the groove.
  • the sound-generating device further includes a flexible circuit board fixed on the side of the basin frame away from the vibrating membrane, and the voice coil lead is electrically connected to the flexible circuit board.
  • the skeleton includes a skeleton body attached to the side of the diaphragm close to the voice coil, and the end of the skeleton body away from the diaphragm goes to the other side.
  • the skeleton connecting arm comprising: At least two are arranged at intervals from each other, and the skeleton connecting arm is fixedly connected with the voice coil; the skeleton is added with a skeleton connecting arm connected with the voice coil, that is, the gluing area of the voice coil and the skeleton is increased, which improves the The bonding force of the voice coil and the skeleton can improve the problem of separation of the voice coil skeleton under the high-power vibration of the sound-emitting device, and the reliability is better.
  • 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 a schematic three-dimensional structure diagram of the skeleton of the sound-emitting device of the present invention.
  • FIG. 5 is a schematic diagram of the skeleton and the assembly structure of the voice coil of the sound-emitting device of the present invention.
  • 6 is an exploded view of another part of the three-dimensional structure of the present utility model, wherein (6a) is an assembly schematic diagram of a skeleton, a basin frame, a voice coil lead and a flexible circuit board, and (6b) is an enlarged schematic diagram of A in (6a).
  • the flexible circuit board 5 is clamped and fixed on the side of the second surrounding wall 13 and the third surrounding wall 12 away from the diaphragm 21.
  • the flexible circuit board 5 can also be fixed on other positions of the basin frame 1, so the The voice coil lead 221 is electrically connected to the flexible circuit board 5 to provide electrical signals for the entire sound generating device 100 .
  • the diaphragm 21 includes a first annular portion 2121 and a second annular portion 2122.
  • the first annular portion 2121 surrounds the second annular portion 2122 and is spaced apart from each other; below
  • the skeleton body 233 is located between the first folding ring part 2121 and the second folding ring part 2122, and the outer side of the skeleton body 233 is connected with the first folding ring part 2121.
  • the inner side is connected to the second folding ring part 2122; the outer side of the first folding ring part 2121 and the inner side of the second folding ring part 2122 are both fixed to the basin frame 1, specifically, the first folding ring part
  • the outer side of the 2121 and the inner side of the second folded ring portion 2122 are respectively fixed to the upper ends of the second surrounding wall 13 and the first surrounding wall 11 . That is, the skeleton body 233 acts as a dome, which saves the number of parts and assembling processes, saves costs, and the strength of the entire diaphragm 21 is improved, and the vibration effect of the diaphragm 21 is better.
  • 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 skeleton 23 includes a skeleton body 233 attached to the side of the diaphragm 21 close to the voice coil 22 , and a skeleton body 233 is bent and extended from the end of the skeleton body 233 away from the diaphragm 21 to the magnetic gap 30 .
  • the skeleton 23 is added with a skeleton connecting arm 232 connected to the voice coil 22, that is, the glued area of the voice coil 22 and the skeleton 23 is increased, the bonding force of the voice coil 22 and the skeleton 23 is improved, and the high power of the sounding device 100 can be improved.
  • the problem of separation of the voice coil 22 and the skeleton 23 under vibration and sound, the reliability is better.
  • the skeleton connecting arms 232 are symmetrically arranged with respect to the skeleton supporting arms 231 , and the skeleton supporting arms 231 are arranged around the voice coil 22 and are abutted and fixed on the outer peripheral side of the voice coil 22 , that is, a plurality of The frame connecting arm 232 and the plurality of frame supporting arms 231 are evenly distributed on the outer side of the frame connecting arm 232 , the support effect is better, the force is more uniform, and the frame 23 can be prevented from breaking under high power vibration.
  • the frame connecting arm 232 is fixed on the side of the voice coil 22 close to the diaphragm 21 .
  • the frame connecting arm 232 is an orthographic projection of the voice coil 22 along the vibration direction of the diaphragm 21 . It completely falls within the range of the voice coil 22 , that is, under the condition of ensuring the glued area between the voice coil 22 and the skeleton 23 , the material and volume of the skeleton connecting arm 232 are reduced, the cost is reduced, and the space utilization rate is better.
  • the frame connecting arms 232 and the frame supporting arms 231 each include three and are arranged at equal distances from each other.
  • the skeleton support arm 231 includes a first section 2311 bent and extended from the skeleton body 233 toward the magnetic gap 30 , and the first section 2311 is close to the outer side of the voice coil 22 by the first section 2311 .
  • the second section 2312 is bent and extended in the direction of the diaphragm 21. The end of the second section 2312 away from the first section 2311 is connected to the outer side of the frame connecting arm 232 to form an avoidance step 230.
  • a plurality of avoidance steps 230 The avoidance space is provided for the voice coil 22 , and the avoidance step 230 is attached to the upper end of the voice coil 22 , which can prevent the voice coil 22 from swinging left and right while the space utilization rate is higher, thereby improving the reliability of the sounding device 100 .
  • the magnetic circuit system 3 is accommodated in the accommodating space 110 and is used to drive the vibration system 2 to vibrate and emit sound.
  • the magnetic steel unit 32 in 31, and the second magnetic bowl 33 covered on the magnetic steel unit 32, the magnetic steel unit 32 and the first magnetic bowl 31 are spaced to form the magnetic gap 30, the A magnetic bowl 31 and the second magnetic bowl 33 are both provided with a gap 34 passing through them and used to avoid the frame support arm 231 .
  • the sealing ring 4 is press-fitted on the inner side of the second folding ring portion 2122 away from the basin frame 1 , and the sealing ring 4 presses the inner side of the second folding ring portion 2122 on the basin frame 1 , Meanwhile, the sealing ring 4 is arranged around the periphery of the second magnetic bowl 33, and the sealing effect is better.
  • the skeleton includes a skeleton body attached to the side of the diaphragm close to the voice coil, and the end of the skeleton body away from the diaphragm goes to the other side.
  • the connection forms an integral annular structure, and the skeleton connecting arm is fixedly connected with the voice coil; the skeleton adds a skeleton connecting arm connected with the voice coil, that is, the glueing area of the voice coil and the skeleton is increased, and the voice coil is improved.
  • the bonding force with the skeleton can improve the problem of separation of the voice coil skeleton under the high-power vibration of the sound-emitting device, and the reliability is better.

Landscapes

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

Abstract

Le présent modèle d'utilité concerne un dispositif de production de son, comprenant un système de vibration destiné à vibrer et produire un son et un système de circuit magnétique pour mettre en vibration le système de vibration afin de produire un son et comprenant un entrefer magnétique ; le système de vibration comprend une membrane, une bobine acoustique insérée dans l'entrefer magnétique et entraînant la membrane à vibrer et produire un son, et une structure reliant la bobine acoustique et la membrane ; la structure comprend un corps de structure fixé au côté de la membrane à proximité de la bobine acoustique, au moins deux bras de support de structure mutuellement espacés, courbés et s'étendant depuis l'extrémité du corps de structure éloigné de la membrane vers l'entrefer magnétique, et des bras de liaison de cadre s'étendant le long de la périphérie de la bobine acoustique depuis l'extrémité du bras de support de structure s'écartant du corps de structure ; il y a au moins deux bras de liaison de structure qui sont espacés l'un de l'autre ; et les bras de liaison de structure sont reliés de manière fixe à la bobine acoustique. Par rapport à l'état de la technique associé, le dispositif de production de son fourni par le présent modèle d'utilité présente une meilleure fiabilité.
PCT/CN2020/114324 2020-07-06 2020-09-10 Dispositif de production de son WO2022007175A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202021322659.6U CN212812021U (zh) 2020-07-06 2020-07-06 发声器件
CN202021322659.6 2020-07-06

Publications (1)

Publication Number Publication Date
WO2022007175A1 true WO2022007175A1 (fr) 2022-01-13

Family

ID=75099908

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/114324 WO2022007175A1 (fr) 2020-07-06 2020-09-10 Dispositif de production de son

Country Status (2)

Country Link
CN (1) CN212812021U (fr)
WO (1) WO2022007175A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10099424B2 (en) * 2015-12-18 2018-10-16 Bose Corporation Air adsorbing and sound absorbing structure
CN109348372A (zh) * 2018-09-30 2019-02-15 瑞声科技(新加坡)有限公司 发声器件
CN109362005A (zh) * 2018-09-30 2019-02-19 瑞声科技(新加坡)有限公司 发声器件
CN109831726A (zh) * 2018-12-29 2019-05-31 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
US10099424B2 (en) * 2015-12-18 2018-10-16 Bose Corporation Air adsorbing and sound absorbing structure
CN109348372A (zh) * 2018-09-30 2019-02-15 瑞声科技(新加坡)有限公司 发声器件
CN109362005A (zh) * 2018-09-30 2019-02-19 瑞声科技(新加坡)有限公司 发声器件
CN109831726A (zh) * 2018-12-29 2019-05-31 瑞声科技(新加坡)有限公司 发声器件

Also Published As

Publication number Publication date
CN212812021U (zh) 2021-03-26

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