WO2020006938A1 - Structure de connexion électrique dans un dispositif de production de son et système de vibration et haut-parleur - Google Patents

Structure de connexion électrique dans un dispositif de production de son et système de vibration et haut-parleur Download PDF

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Publication number
WO2020006938A1
WO2020006938A1 PCT/CN2018/112257 CN2018112257W WO2020006938A1 WO 2020006938 A1 WO2020006938 A1 WO 2020006938A1 CN 2018112257 W CN2018112257 W CN 2018112257W WO 2020006938 A1 WO2020006938 A1 WO 2020006938A1
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WO
WIPO (PCT)
Prior art keywords
connection structure
electrical connection
voice coil
fixing
vibration system
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/CN2018/112257
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English (en)
Chinese (zh)
Inventor
王建建
刘迎新
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 WO2020006938A1 publication Critical patent/WO2020006938A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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 technical field of speakers. More specifically, it relates to an electrical connection structure and a vibration system and a speaker in a sound generating device.
  • the speaker includes an auxiliary system, a magnetic circuit system, and a vibration system.
  • the magnetic circuit system is provided with a magnetic gap.
  • the vibration system includes a diaphragm, an electrical connection structure combined with the diaphragm, and a voice coil.
  • the electrical connection structure in the speaker is usually a flexible circuit board.
  • the voice coil is disposed in the magnetic gap. After receiving the external electric signal, the voice coil disposed in the magnetic gap performs reciprocating motion under the driving of the magnetic field force, thereby driving the reinforcement part and the air above the diaphragm to generate sound.
  • the flexible circuit board is one of the basic components of the speaker. Its role is mainly to ensure the correct position of the voice coil in the magnetic gap. When the voice coil is stressed, the vibration system only reciprocates in the axial direction and provides the vibration system for reciprocating motion. Elasticity.
  • the conventional flexible circuit board includes a first fixing portion and a second fixing portion. The first fixing portion is fixedly connected to the auxiliary system, the second fixing portion is connected to the voice coil, and the voice coil is electrically connected to the external circuit through the conductive layer of the flexible circuit board. , The first fixing portion and the second fixing portion are integrally connected by a connecting arm.
  • the voice coil lead is wound from one side of the voice coil through the top of the voice coil to the other side of the voice coil, and is electrically connected to the pad of the flexible circuit board. Therefore, when the top of the voice coil is bonded and fixed to the flexible circuit board, the voice coil lead is sandwiched between the voice coil and the flexible circuit board, which will cause the voice coil to be deflected, the inner magnetic gap will decrease, and the outer magnetic gap will increase. , And easily cause friction between the voice coil and the magnetically permeable plate, affecting the acoustic performance of the speaker.
  • the electrical connection structure is formed with an avoidance portion that avoids the height of the voice coil lead, and the voice coil lead can be electrically connected and fixed through the conductive member.
  • the second object of the present invention is to provide a vibration system which can effectively avoid the voice coil lead and solve the problem of voice coil deflection caused by design factors.
  • a third object of the present invention is to provide a speaker, which can solve the problems of voice coil deflection and poor listening caused by a voice coil lead, and improve the acoustic performance of the speaker.
  • the present invention provides an electrical connection structure in a sound emitting device.
  • the electrical connection structure includes an upper surface portion for fixing and fixing to a side surface of a diaphragm in the sound emitting device, and
  • the lower surface portion of the voice coil is fixedly fixed, and further includes a conductive member for conducting conduction with the voice coil lead.
  • An avoiding portion is provided on the lower surface portion of the electrical connection structure fixedly combined with the voice coil, and the voice coil lead passes through. The avoidance portion is electrically connected and fixed with the conductive member of the electrical connection structure.
  • the avoiding portion is formed by the lower surface of the electrical connection structure corresponding to the position of the voice coil lead being recessed upward.
  • the width of the horizontal section of the avoiding portion is not smaller than the diameter of the voice coil lead.
  • the voice coil lead and the electrical connection structure are glued and fixed.
  • the avoidance portion is formed by penetrating the upper and lower surfaces of the electrical connection structure corresponding to the position of the voice coil lead.
  • the electrical connection structure is a flexible circuit board, and the conductive member is a pad.
  • the flexible circuit board includes an outermost first fixing portion, a second fixing portion located at a middle position, and a connecting arm connecting the first fixing portion and the second fixing portion.
  • the pad is formed to extend inward from the second fixing portion in a horizontal direction, and the avoidance portion is provided corresponding to the pad.
  • the flexible circuit board includes two oppositely disposed first sides and two oppositely disposed second sides, and the pads and the escape portion are symmetrically disposed on the first side or the second side On the side.
  • the present invention also provides a vibration system.
  • the vibration system includes a reinforced portion, a diaphragm, an electrical connection structure, and a voice coil.
  • the electrical connection structure is as described above. Electrical connection structure.
  • the present invention further provides a speaker, which includes an auxiliary system, a magnetic circuit system, and a vibration system.
  • the magnetic circuit system and the vibration system are housed and fixed in a receiving cavity formed by the auxiliary system.
  • the vibration system is a vibration system as described above.
  • the utility model provides an electrical connection structure in a sound generating device capable of avoiding a voice coil lead.
  • An escape portion is formed on the electrical connection structure, and the voice coil lead can be passed through and electrically connected to a conductive member and fixed. Due to the problem of the voice coil bonding and deflection caused by the voice coil lead being sandwiched between the voice coil and the electrical connection structure, collision friction between the voice coil and the magnetically permeable plate is avoided.
  • the utility model also provides a vibration system and a loudspeaker including the electrical connection structure. The vibration system and the loudspeaker are provided with an avoiding portion for avoiding a voice coil lead on the electric connection structure, which can prevent the adhesion of the voice coil from deflection. Improve the internal and external magnetic gap, effectively improve the sound performance of the speaker.
  • FIG. 1 shows an exploded view of a speaker in the present invention.
  • FIG. 2 shows a partially enlarged schematic diagram at B in FIG. 1.
  • FIG. 3 is a schematic structural diagram of a flexible circuit board in a preferred embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a flexible circuit board in another preferred embodiment of the present invention.
  • the present invention provides an electrical connection structure in a sound emitting device, and a vibration system and a speaker having the electrical connection structure. Specifically, the detailed description is described below with reference to the accompanying drawings.
  • FIG. 1 shows an exploded view of the loudspeaker in the present invention
  • FIG. 2 shows a partially enlarged schematic view at B in FIG. 1.
  • FIG. 3 is a schematic structural diagram of a flexible circuit board in a preferred embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a flexible circuit board in another preferred embodiment of the present invention.
  • the utility model provides an electrical connection structure in a sound producing device.
  • the electrical connection structure includes an upper surface portion used for fixing and fixing to a surface of a side of a diaphragm in the sound emitting device, and a lower surface portion used for fixing and fixing with a voice coil. And further includes a conductive member for conducting conduction with the voice coil lead, and an avoiding portion is provided on a lower surface portion of the electrical connection structure that is fixed in combination with the voice coil, and the voice coil lead passes through the avoiding portion and is electrically conductive. The pieces are electrically connected.
  • An escape portion is formed on the electrical connection structure provided by the utility model, and the voice coil lead can be passed through and electrically connected and fixed with the conductive member, which solves the problem caused by the voice coil lead sandwiched between the voice coil and the electrical connection structure in the prior art.
  • the problem of deflection of the voice coil bonding can avoid collision friction between the voice coil and the magnetically permeable plate.
  • the avoidance portion is formed by the lower surface of the electrical connection structure corresponding to the position of the voice coil lead being recessed upward.
  • the way of forming the avoidance part is simple, the manufacturing process of the electrical connection structure having the avoidance part is simple, and it is easy to be processed and formed at one time.
  • the width of the horizontal section of the avoidance portion needs to be not less than the diameter of the voice coil lead.
  • the voice coil lead and the electrical connection structure are fixed together by glue to prevent the speaker performance from being unstable due to the floating of the voice coil lead.
  • the electrical connection structure provided by this preferred embodiment is a flexible circuit board 13, and the conductive member is a pad 131 on the flexible circuit board 13.
  • an avoiding portion 133 is provided on a lower surface portion of the flexible circuit board 13 that is fixedly combined with the voice coil 14, and the voice coil lead 141 passes through the avoiding portion 133 and the pad 131 electrically.
  • the connection is fixed.
  • the avoiding portion 133 is formed by the lower surface of the flexible circuit board 13 corresponding to the position of the voice coil lead 141 being recessed upward.
  • a width of a horizontal cross section of the avoiding portion 133 is larger than a diameter of a voice coil lead, and the voice coil lead 141 and the flexible circuit board 13 are fixed with glue.
  • the electrical connection structure is a flexible circuit board 13, and the conductive member is a pad 131 on the flexible circuit board 13.
  • the avoidance portion is formed by penetrating the upper and lower surfaces of the flexible circuit board 13 corresponding to the position of the voice coil lead 141 to provide more sufficient space for the voice coil lead 141 to prevent the voice coil lead 141 from being caught between the voice coil 14 and the flexible circuit board 13 causes the voice coil 14 to be deflected.
  • the flexible circuit board 13 includes an outermost first fixing portion 135, a second fixing portion 132 at a middle position, and a connection between the first fixing portion 135 and the first fixing portion 135.
  • the connecting arm 134 of the two fixing portions 132 The top surface of the voice coil 14 is fixed to the lower surface of the second fixing portion 132 of the flexible circuit board 13, and the voice coil lead 141 passes through the avoiding portion 133 and is electrically connected and fixed to the lower surface of the pad 131.
  • the pad 131 extends inwardly from the second fixing portion 132 in a horizontal direction, and the avoidance portion 133 is provided corresponding to the pad 131.
  • the flexible circuit board 13 includes two oppositely disposed first sides and two oppositely disposed second sides, and the pads 131 and the avoiding portions 133 are symmetrically disposed on the first side or The second side is symmetrical about the center of the flexible circuit board 13. Further, the avoiding portion 133 is preferably located at an intermediate position of the second fixing portion 132.
  • the present invention also provides a vibration system, which includes a reinforcing portion 11, a diaphragm 12, a flexible circuit board 13 and a voice coil 14 provided in the foregoing preferred embodiments.
  • the present invention also provides a speaker, as shown in FIGS. 1-2.
  • the speaker includes an auxiliary system 3, a magnetic circuit system 2, and a vibration system provided by the present invention.
  • the magnetic circuit system 2 and the vibration system contain the same. It is fixed in the receiving cavity formed by the auxiliary system 3.
  • the magnetic circuit system includes a center magnet and a side magnet, and a magnetic yoke that fixes the center magnet and the side magnet and performs magnetic permeability.
  • a side of the center magnet near the vibration system is provided with a center magnetic plate, and a side magnet is provided near the vibration system.
  • There is a magnetically permeable plate a magnetic gap is formed between the central magnet, the central magnetically permeable plate and the magnetic rim, the magnetically permeable plate, and one end of the voice coil 14 is suspended in the magnetic gap.
  • the vibration system and loudspeaker including the electrical connection structure provided by the present utility model.
  • the vibration system and the loudspeaker are provided with an avoiding portion for avoiding the voice coil lead on the electrical connection structure, which can prevent the deflection of the voice coil and improve Internal and external magnetic gap, effectively improve the sound performance of the speaker.

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  • 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 se rapporte au domaine technique des haut-parleurs. L'invention concerne une structure de connexion électrique dans un dispositif de production de son et un système de vibration et un haut-parleur. La structure de connexion électrique dans le dispositif de production de son comprend une partie de surface supérieure pour lier et fixer la surface d'un côté d'un diaphragme vibrant dans le dispositif de production de son et une partie de surface inférieure pour lier et fixer une bobine acoustique, et comprend en outre un élément conducteur pour conduire un fil conducteur de bobine acoustique. Une partie d'évitement est disposée sur la partie de surface inférieure, qui est liée et fixée à la bobine acoustique, de la structure de connexion électrique, et le fil conducteur de bobine acoustique passe à travers la partie d'évitement et est électriquement connecté et fixé à l'élément conducteur de la structure de connexion électrique. Selon le présent modèle d'utilité, la structure de connexion électrique dans le système de vibration et le haut-parleur peuvent éviter efficacement le fil conducteur de bobine acoustique, le problème de déviation de bobine acoustique est résolu, et les performances acoustiques du haut-parleur sont améliorées.
PCT/CN2018/112257 2018-07-04 2018-10-27 Structure de connexion électrique dans un dispositif de production de son et système de vibration et haut-parleur Ceased WO2020006938A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201821052149.4 2018-07-04
CN201821052149.4U CN208369847U (zh) 2018-07-04 2018-07-04 发声装置中的电连接结构及振动系统和扬声器

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WO2020006938A1 true WO2020006938A1 (fr) 2020-01-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI829247B (zh) * 2022-07-15 2024-01-11 富祐鴻科技股份有限公司 微型揚聲器之電連接結構

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111093138B (zh) * 2019-12-13 2021-10-19 瑞声科技(新加坡)有限公司 发声器件
CN114666715B (zh) * 2022-04-29 2025-12-12 厦门东声电子有限公司 一种fpc和焊盘一体成型的扬声器及其组装方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104219607A (zh) * 2014-09-01 2014-12-17 歌尔声学股份有限公司 扬声器模组
CN205622865U (zh) * 2016-03-31 2016-10-05 歌尔股份有限公司 扬声器单体以及扬声器模组
US20180027336A1 (en) * 2016-07-20 2018-01-25 AAC Technologies Pte. Ltd. Miniature Sounding Device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104219607A (zh) * 2014-09-01 2014-12-17 歌尔声学股份有限公司 扬声器模组
CN205622865U (zh) * 2016-03-31 2016-10-05 歌尔股份有限公司 扬声器单体以及扬声器模组
US20180027336A1 (en) * 2016-07-20 2018-01-25 AAC Technologies Pte. Ltd. Miniature Sounding Device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI829247B (zh) * 2022-07-15 2024-01-11 富祐鴻科技股份有限公司 微型揚聲器之電連接結構

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