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WO2018170940A1 - Dispositif de génération de son et appareil électronique - Google Patents

Dispositif de génération de son et appareil électronique Download PDF

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Publication number
WO2018170940A1
WO2018170940A1 PCT/CN2017/078749 CN2017078749W WO2018170940A1 WO 2018170940 A1 WO2018170940 A1 WO 2018170940A1 CN 2017078749 W CN2017078749 W CN 2017078749W WO 2018170940 A1 WO2018170940 A1 WO 2018170940A1
Authority
WO
WIPO (PCT)
Prior art keywords
elastic body
vibrating
sounding device
sound
vibration
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2017/078749
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English (en)
Chinese (zh)
Inventor
汲鹏程
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goertek Inc
Original Assignee
Goertek Inc
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 Goertek Inc filed Critical Goertek Inc
Publication of WO2018170940A1 publication Critical patent/WO2018170940A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H04R9/06—Loudspeakers
    • 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
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the present invention relates to the field of electroacoustic conversion, and more particularly to a sound emitting device such as a speaker, a receiver, etc.; the present invention also relates to an electronic device.
  • a sounding device is an important acoustic component in an electronic device that is a transducer that converts an electrical signal into an acoustic signal.
  • a conventional sounding device includes a housing, and a magnetic circuit system disposed within the housing and a vibration system including a diaphragm and a voice coil disposed under the diaphragm. The voice coil drives the diaphragm to make sounds under the vibration of the magnetic circuit system.
  • the existing sounding devices adopt the design structure of the diaphragm ring with a folding ring.
  • the folding ring structure not only reduces the effective vibration area of the diaphragm, but also is not conducive to the full utilization of the space.
  • due to The difference between the vibration part of the diaphragm and the structure of the folding ring makes the consistency of the two forms poor, which easily leads to the nonlinear polarization of the diaphragm.
  • the diaphragm fold ring and the pattern structure are easily broken at a large amplitude, resulting in poor product.
  • a sounding device comprising a housing, a vibration system, the vibration system comprising a vibration plate, the vibration plate being mounted on a mounting end surface of the housing by a ring of an annular elastomer seal
  • the vibrating plate and the elastic body divide the inner cavity of the casing into a front acoustic cavity and a rear acoustic cavity which are isolated from each other.
  • the elastic body has a circular arc shape in cross section.
  • the elastomer is a tubular shape having a hollow lumen.
  • a pressure relief hole connecting the rear acoustic cavity and the hollow hollow cavity of the elastic body is disposed on an inner wall of the tubular elastic body.
  • the number or/and the aperture or/and the distribution position of the relief holes on the opposite side walls of the tubular elastomer are different.
  • the vibrating plate is bonded to the upper end surface of the elastic body, and the lower end surface of the elastic body is adhered to the mounting end surface of the housing.
  • a magnetic circuit system is further included, the magnetic circuit system includes a magnetic gap formed by a magnet, the vibration system further includes a voice coil mounted at a lower end of the vibration plate, and a magnetic end of the voice coil and a magnetic circuit of the magnetic circuit system The gap fits together.
  • the magnetic circuit system includes a yoke, a central magnet mounted on the yoke, and a side magnet, and further includes a center washer disposed on the upper end surface of the center magnet, and a side washer disposed on the upper end surface of the side magnet
  • the magnetic gap is composed of a side magnet and a center magnet.
  • the vibrating plate has a shape of a rectangle, a circle, a racetrack or an ellipse, and the shape of the elastic body matches the shape of the vibrating plate.
  • an electronic device comprising the above-described sounding device.
  • the vibrating plate is connected to the casing through the elastic body, which not only facilitates the sealing separation of the front acoustic cavity and the rear acoustic cavity, but also increases the vibration amplitude of the vibrating plate through the elastic body, and improves the low frequency performance of the sounding device;
  • the high-frequency advantage of the vibrating plate itself can widen the frequency band of the vibrating plate vibration and improve the high-frequency performance to a certain extent.
  • the sounding device of the invention eliminates the folding ring and pattern design of the traditional diaphragm, increases the effective vibration area, and improves the sounding performance; the vibration plate and the elastic body are separately manufactured, so that the process is easier to control and avoid the generation of polarization. Problems such as membrane rupture under large displacement have also been improved.
  • the folding ring structure not only reduces the effective vibration area of the diaphragm, but also is not conducive to the full utilization of the space; moreover, in the process of forming the diaphragm, due to the vibrating portion of the diaphragm and The difference in the structure of the folded ring makes the consistency of the two forms poor, which easily leads to the nonlinear polarization of the diaphragm. Therefore, the technical task to be achieved by the present invention or the technical problem to be solved is not thought of or expected by those skilled in the art, so the present invention is a new technical solution.
  • Figure 1 is a cross-sectional view showing a sound emitting device of the present invention.
  • FIG. 2 is a schematic view showing the cooperation structure of the vibrating plate and the elastic body of the present invention.
  • the present invention provides a sounding device that includes a housing, a vibration system, and an actuation system that mates with the vibration system.
  • the casing of the present invention may include an upper casing 10, a middle casing 11, and a lower casing 12, and the upper casing 10, the middle casing 11, and the lower casing 12 are fastened together to form a casing having an inner cavity.
  • the end surface of the upper casing 10 is also covered with an end cover 9 , and the end cover 9 is provided with an acoustic hole structure and the like.
  • the matching structure between the housings depends on the type of the sound generating device and the design requirements, which belongs to the field. The common knowledge of the skilled person is not specifically described here.
  • the vibration system of the present invention includes a vibrating plate 6 which employs a planar plate structure which does not have a folding ring structure of a conventional diaphragm or the like.
  • the vibrating plate 6 may be a ball top material well known to those skilled in the art, such as an aluminum coated, PN or PET composite or the like. Due to the vibration plate The shape of the rule is 6, so the manufacturing process is more controllable.
  • an elastomer 7 which is sealedly mounted on the mounting end face of the housing by the elastomer 7 with reference to Figures 1 and 2.
  • the elastomer 7 may be made of an elastic material well known to those skilled in the art including, but not limited to, elastomeric materials such as PEEK, TPU, PU, PEN, silica gel, or elastomeric diaphragm materials or composite PEEK materials.
  • the elastic body 7 has an annular shape as a whole, which matches the shape of the vibrating plate 6. For example, when the vibrating plate 6 selects a rectangle, the elastic body 7 has a rectangular ring shape matched thereto, so that the edge position of the vibrating plate 6 can be sealedly connected to the mounting end face of the casing by the elastic body 7.
  • the vibrating plate 6 can also be selected from a circular, elliptical, racetrack shape or other shape well known to those skilled in the art and will not be described in detail herein.
  • the lower end surface of the vibrating plate 6 may be adhered to the upper end surface of the elastic body 7 by glue, and the lower end surface of the elastic body 7 is adhered to the mounting end surface of the housing by glue, through the ring shape.
  • the elastomer 7 thus makes it possible to achieve a sealed mounting of the vibrating plate 6 with the housing.
  • the vibrating plate 6 and the elastic body 7 separate the inner cavity of the casing into the front acoustic cavity and the rear acoustic cavity which are isolated from each other.
  • the structure of the front acoustic cavity and the rear acoustic cavity in the sounding device belongs to common knowledge of those skilled in the art. It will not be specified here.
  • the elastic body 7 of the present invention provides an elastic force for the vibration of the vibrating plate 6, which is equivalent to a folding ring in the conventional diaphragm structure.
  • the elastic body 7 may have a circular cross section, for example, a semicircular shape or a C shape.
  • the elastomer 7 is tubular having a hollow lumen, such as a rectangular tube or a circular tube or the like. Since the elastic body 7 is produced separately from the vibrating plate 6, the manufacturing process of the elastic body 7 can be made to have a good consistency, especially when the shape of the elastic body 7 is relatively regular.
  • the vibrating plate is connected to the casing through the elastic body, which not only facilitates the sealing separation of the front acoustic cavity and the rear acoustic cavity, but also increases the vibration amplitude of the vibrating plate through the elastic body, and improves the low frequency performance of the sounding device;
  • the high-frequency advantage of the vibrating plate itself can widen the frequency band of the vibrating plate vibration and improve the high-frequency performance to a certain extent.
  • the sounding device of the invention eliminates the folding ring and pattern design of the traditional diaphragm, increases the effective vibration area, and improves the sounding performance; the vibration plate and the elastic body are separately manufactured, so that the process is easier to control and avoid the generation of polarization. Problems such as membrane rupture under large displacement have also been improved.
  • the elastic body 7 of the present invention preferably employs a tubular elastic body, for example, a rectangular pipe or a circular pipe.
  • This structure has a good consistency in the forming process of the pipe and is relatively easy to control.
  • a pressure relief hole 70 is provided on the inner wall of the tubular elastic body 7 to communicate the hollow cavity of the rear acoustic cavity and the elastic body 7, with reference to FIG.
  • the back sound chamber is communicated with the hollow inner cavity of the elastic body 7 through the pressure relief hole 70, so that the pressure of the hollow inner cavity and the rear sound cavity of the elastic body 7 during the vibration process can be balanced, thereby improving the vibration effect of the elastic body 7. .
  • the purpose of adjusting the compliance of the entire vibration system can be achieved. For example, the larger the number of pressure relief holes 70, the larger the aperture, and the smaller the resistance that the elastic body 7 receives when vibrating.
  • the number or/and the aperture or/and the distribution position of the relief holes 70 on the opposite side walls of the tubular elastomer 7 are different.
  • the number, the aperture, and the distribution position of the pressure relief holes 70 on the two short side walls are different, and the number of the pressure relief holes 70 on the two long side walls thereof is different.
  • the aperture and distribution position are different.
  • the vibration system reaches an equilibrium state, thereby improving the polarization of the vibration system caused by the asymmetry of the structure and the cavity, and effectively solving the problem of rubbing and noise caused by polarization and polarization which are easy to occur under low frequency and large displacement, and satisfying the long time.
  • High-intensity work requirements increase the reliability of the sounding device.
  • the actuation system can be either a moving coil type or a moving iron type. Both of these actuation modalities are well known to those skilled in the art.
  • the present invention describes the sounding device of the present invention in a moving coil type of actuation.
  • the sounding device of the present invention has an actuation system that is a magnetic circuit system that includes a magnetic gap formed by a magnet and a washer positioned above the magnet.
  • the magnetic circuit system may be a single magnetic circuit, a dual magnetic circuit, or other magnetic circuit structures well known to those skilled in the art.
  • the magnetic circuit system may comprise a yoke 1, a central magnet 2, which may be mounted in the central portion of the yoke 1 in a manner well known to those skilled in the art.
  • a center washer 3 is further disposed at an upper end of the center magnet 2.
  • Magnetic circuit system also includes The side magnet 4 is disposed around the central magnet 2, and the side magnet 4 is surrounded by a ring shape which can be fixed to the yoke 1 by means well known to those skilled in the art.
  • the side magnet 5 is provided on the side magnet 4, and the shape of the edge washer 5 matches the shape of the side magnet 4.
  • An annular magnetic gap is formed between the center magnet 2 and the side magnet 4.
  • the vibration system further includes a voice coil 8 mounted on the lower end of the vibrating plate 6, and the upper end of the voice coil 8 can be fixed to the vibrating plate 6 by bonding, for example, and the other end is engaged with the magnetic gap of the magnetic circuit system. together.
  • the energized voice coil 8 drives the vibrating plate 6 to vibrate and vocalize by the cooperation of the magnetic circuit system. This principle of sounding is common knowledge of those skilled in the art and will not be specifically described herein.
  • the sounding device of the present invention can be applied to various electronic devices.
  • the present invention also provides an electronic device including the above-described sounding device.
  • the electronic device may be a mobile phone, a computer, a player, an audio, or the like, which is well known to those skilled in the art, and has an audible function.

Landscapes

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

Abstract

L'invention concerne un dispositif de génération de son et un appareil électronique, le dispositif de génération de son comprenant un boîtier et un système vibrant, le système vibrant comprenant une plaque plate vibrante (6), la plaque plate vibrante (6) étant montée hermétiquement sur une face d'extrémité de montage du boîtier au moyen d'un cercle de corps élastique en forme d'anneau ; et la plaque plate vibrante (6) et le corps élastique (7) divisent une cavité interne du boîtier en une cavité sonore avant et en une cavité sonore arrière, ces deux dernières étant séparées l'une de l'autre. Le dispositif de génération de son peut augmenter, au moyen du corps élastique (7), l'amplitude de vibration de la plaque plate vibrante, améliorant ainsi les performances de basse fréquence du dispositif de génération de son ; en outre, à l'aide de l'avantage de haute fréquence de la plaque plate vibrante (6) elle-même, la bande de fréquences de vibration de la plaque plate vibrante (6) peut être élargie, de telle sorte que la performance de haute fréquence est augmentée dans une certaine mesure. Le dispositif de génération de son élimine les conceptions d'un anneau pliable et d'un motif dans une membrane vibrante traditionnelle, et augmente la zone de vibration effective, améliorant ainsi les performances de génération de son ; et la plaque plate vibrante (6) et le corps élastique (7) sont fabriqués séparément, ce qui rend le processus plus facile à commander, empêche la génération de polarisation et améliore le problème d'endommagement d'une membrane sous l'effet d'un grand déplacement.
PCT/CN2017/078749 2017-03-20 2017-03-30 Dispositif de génération de son et appareil électronique Ceased WO2018170940A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710164916.4 2017-03-20
CN201710164916.4A CN106954148B (zh) 2017-03-20 2017-03-20 一种发声装置及电子设备

Publications (1)

Publication Number Publication Date
WO2018170940A1 true WO2018170940A1 (fr) 2018-09-27

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PCT/CN2017/078749 Ceased WO2018170940A1 (fr) 2017-03-20 2017-03-30 Dispositif de génération de son et appareil électronique

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CN (1) CN106954148B (fr)
WO (1) WO2018170940A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108574917B (zh) * 2018-05-28 2021-03-02 歌尔股份有限公司 电子设备
CN114025279B (zh) * 2021-11-25 2024-03-26 京东方科技集团股份有限公司 一种平板发声装置及终端设备
CN116193329A (zh) * 2021-11-26 2023-05-30 深圳市韶音科技有限公司 振动组件及传声装置
CN116193328A (zh) * 2021-11-26 2023-05-30 深圳市韶音科技有限公司 振动组件及扬声器
CN114401477B (zh) * 2022-03-24 2022-09-02 北京荣耀终端有限公司 扬声器模组和电子设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009246954A (ja) * 2008-02-22 2009-10-22 Nec Tokin Corp 受話装置
CN102273226A (zh) * 2010-01-06 2011-12-07 宝星电子株式会社 多功能微型扬声器
CN102291650A (zh) * 2010-06-17 2011-12-21 索尼公司 声音转换装置
CN106470371A (zh) * 2014-01-06 2017-03-01 深圳市韶音科技有限公司 一种能够抑制漏音的骨传导扬声器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009246954A (ja) * 2008-02-22 2009-10-22 Nec Tokin Corp 受話装置
CN102273226A (zh) * 2010-01-06 2011-12-07 宝星电子株式会社 多功能微型扬声器
CN102291650A (zh) * 2010-06-17 2011-12-21 索尼公司 声音转换装置
CN106470371A (zh) * 2014-01-06 2017-03-01 深圳市韶音科技有限公司 一种能够抑制漏音的骨传导扬声器

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Publication number Publication date
CN106954148A (zh) 2017-07-14
CN106954148B (zh) 2018-12-14

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