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WO2012163003A1 - Transducteur électroacoustique dynamique - Google Patents

Transducteur électroacoustique dynamique Download PDF

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Publication number
WO2012163003A1
WO2012163003A1 PCT/CN2011/080780 CN2011080780W WO2012163003A1 WO 2012163003 A1 WO2012163003 A1 WO 2012163003A1 CN 2011080780 W CN2011080780 W CN 2011080780W WO 2012163003 A1 WO2012163003 A1 WO 2012163003A1
Authority
WO
WIPO (PCT)
Prior art keywords
voice coil
elastic wave
fixing portion
electroacoustic transducer
type electroacoustic
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/CN2011/080780
Other languages
English (en)
Chinese (zh)
Inventor
王建建
张成飞
葛连山
刘春发
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 WO2012163003A1 publication Critical patent/WO2012163003A1/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
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/041—Centering
    • H04R9/043—Inner suspension or damper, e.g. spider
    • 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
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • 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 present invention relates to the field of electroacoustic conversion technology, and more particularly to a moving coil type electroacoustic transducer.
  • the moving coil type electroacoustic converter which is applied to a thin electronic product such as an LCD or a PDP is generally designed to have a long strip shape.
  • a thin electronic product such as an LCD or a PDP
  • the following two design schemes are disclosed in the prior art:
  • the other is to combine the elastic wave between the diaphragm and the middle casing.
  • This design can realize the anti-polarization effect to a certain extent, but the moving coil type electroacoustic converter for the long-shaped structure In other words, the closer to the middle position, the weaker the polarization reaction, so the elastic wave combined between the diaphragm and the intermediate casing does not fundamentally solve the problem of polarization prevention.
  • the technical problem to be solved by the invention is: for a moving coil type electroacoustic transducer with a long strip structure, a movable coil type electroacoustic transducer design capable of realizing a better anti-polarization effect is provided, and the moving coil type electroacoustic conversion is improved. Vibration performance of the device.
  • the present invention provides a long moving coil type electroacoustic transducer, comprising:
  • a vibration system including a diaphragm and a driving portion coupled to the diaphragm, the driving portion including a voice coil cylinder and a voice coil holder supporting the voice coil cylinder;
  • a magnetic circuit system comprising a top-down combination of a washer, a magnet and a basin;
  • a housing for receiving the vibration system and the magnetic circuit system
  • the moving coil type electroacoustic converter further includes:
  • Elastic waves are respectively disposed at both ends of the voice coil holder, and a first fixing portion is disposed at a middle portion of the elastic wave, and a second fixing portion is disposed at an edge of the elastic wave
  • the first fixing portion is fixed to the voice coil holder, and the second fixing portion is fixed to the outer casing.
  • the two ends of the voice coil bracket protrude to the outside of the magnetic circuit system, and the voice coil cylinder is sleeved on a lower portion of the voice coil bracket, and the first fixing of the elastic wave The portions are fixed at both ends of the bottom of the voice coil holder.
  • the voice coil cylinder is sleeved on a lower portion of the voice coil bracket, and the upper portion of the voice coil bracket is provided with two extension portions extending to the outside of the voice coil cylinder, the elastic wave The first fixing portion is fixed to the two extension portions.
  • a fixing post is respectively disposed on both ends of the bottom of the voice coil bracket, and an end of the fixing post is coupled with the first fixing portion of the elastic wave.
  • the elastic wave is annular
  • the first fixing portion is a mounting hole disposed at the center of the elastic wave
  • the second fixing portion is a plane mounting disposed at the edge of the elastic wave unit.
  • the outer contour of the elastic wave is circular or racetrack type.
  • a preferred embodiment is that the cross section of the elastic wave is wavy.
  • an opening is provided at a position corresponding to the elastic wave mounting at the bottom of the outer casing.
  • the elastic waves are bonded and fixed to the outer casing and the voice coil bracket, respectively.
  • the magnetic circuit system includes two separate parts.
  • FIG. 1 is a schematic exploded view showing the structure of a moving coil type electroacoustic transducer according to Embodiment 1 of the present invention
  • Figure 2 is a cross-sectional view showing a moving coil type electroacoustic transducer according to a first embodiment of the present invention
  • Figure 3 is a partial enlarged view of a portion A of Figure 2;
  • FIG. 4 is a plan view of a bomb wave according to Embodiment 1 of the present invention.
  • Figure 5 is a schematic view showing the assembly of the elastic wave and the driving portion according to the first embodiment of the present invention
  • Figure 6 is a cross-sectional view showing a moving coil type electroacoustic transducer according to a second embodiment of the present invention.
  • Figure 7 is a partial enlarged view of a portion B of Figure 6;
  • Figure 8 is a schematic view showing the assembly of the voice coil holder and the elastic wave according to the second embodiment of the present invention.
  • Fig. 9 is a plan view showing a bomb wave according to a third embodiment of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • FIG. 1 to 5 respectively show an exploded, combined and partial structure of a moving coil type electroacoustic transducer according to a first embodiment of the present invention.
  • the long moving coil type electroacoustic transducer provided by the present invention also includes a vibration system, a magnetic circuit system, and a fixed vibration system.
  • the outer casing 4 of the magnetic circuit system includes a diaphragm 11 and a driving portion combined with the diaphragm 11, the driving portion includes a voice coil cylinder 13 and a voice coil holder 12 supporting the voice coil cylinder 13;
  • the magnetic circuit system includes a top-down combination Huashi 31, magnet 32 and basin frame 33.
  • the basin frame 33 is a slotted structure with open ends, the two ends of the voice coil holder 12 projecting to the outside of the magnetic circuit system, and the voice coil cylinder 13 is sleeved on the lower part of the voice coil holder 12.
  • elastic waves 2 are respectively disposed at two ends of the voice coil holder 12, and a first fixing portion 21 is disposed in a middle portion of the elastic wave 2 and a second fixing portion 22 is disposed at an edge thereof, respectively disposed at both ends of the voice coil holder 12.
  • the first fixing portion 21 of the two elastic waves is fixed on both ends of the bottom of the voice coil holder 12, and the second fixing portion 22 is fixed on the outer casing 4, and both are bonded and fixed.
  • This fixing method is relatively easy to realize in production practice.
  • the elastic wave 2 is disposed at both ends of the bottom of the driving portion, and the voice coil holder 12 of the driving portion is fixed relative to the outer casing by the elastic wave 2, so that the sound supported on the voice coil holder 12 is supported.
  • the ring 13 does not vibrate from the vertical direction due to the action of the magnetic field when the current passes, achieving a better anti-polarization effect.
  • the outer contour of the elastic wave 2 is preferentially circular, the elastic wave of the circular structure is evenly distributed, and the polarization prevention performance is more stable.
  • the elastic wave 2 is annular and has a wave-shaped cross section.
  • the first fixing portion 21 is a mounting hole provided at the center of the elastic wave 2
  • the second fixing portion 22 is a flat mounting portion provided at the edge of the elastic wave 2.
  • a fixing post 121 may be respectively disposed on both ends of the bottom of the voice coil bracket 12, and the end of the fixing post 121 is inserted into the first fixing portion to facilitate the installation of the elastic wave.
  • an opening 41 is further provided for correspondingly accommodating the elastic wave 2 to provide space for the vibration of the elastic wave to avoid collision.
  • the size of the opening 41 can be preset according to the actual production design.
  • the magnetic circuit system includes two independent parts. This design can separately process the magnetic circuit system, which is convenient for simplifying the production process.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • FIG. 6 to 8 show a combination and a partial structure of a moving coil type electroacoustic transducer according to Embodiment 2 of the present invention.
  • the moving coil type electroacoustic transducer of the second embodiment also includes a vibration system, a magnetic circuit system, and a casing 4 that houses the fixed vibration system and the magnetic circuit system.
  • the vibration system includes a diaphragm 11 and a driving portion combined with the diaphragm 11, the driving portion including a voice coil cylinder 13 and a voice coil holder 12' supporting the voice coil cylinder 13;
  • the magnetic circuit system includes a top-down combination
  • the washer 31, the magnet 32 and the basin frame 33, the basin frame 33 is a slotted structure with open ends, the two ends of the voice coil bracket 12' project to the outside of the magnetic circuit system, and the voice coil cylinder 13 is sleeved on the voice coil.
  • the lower portion of the bracket 12' is a slotted structure with open ends, the two ends of the voice coil bracket 12' project to the outside of the magnetic circuit system, and the voice coil cylinder 13 is sleeved on the voice coil.
  • the lower portion of the bracket 12' is
  • the main difference between the second embodiment and the first embodiment is that the structure of the voice coil holder 12' is different.
  • the voice coil tube 13 is sleeved on the lower part of the voice coil holder 12', and the upper portion of the voice coil holder 12' is extended to the voice coil tube. 13 outside the two extensions 122', the two extensions 122' are provided with a fixed column 121', corresponding to the installation of the elastic wave 2.
  • the elastic wave is disposed on the outer side of the voice coil cylinder, and is not mounted on the upper and lower sides of the voice coil cylinder.
  • the second embodiment is implemented according to the second embodiment.
  • the product does not need to consider the space required for the elastic wave installation and vibration in the vertical direction, thereby reducing the product height of the moving coil type electroacoustic transducer, compared with the setting of the elastic wave in the voice coil cylinder in the first embodiment.
  • the application effect of the second embodiment is better.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • Fig. 9 is a plan view showing a bomb wave according to a third embodiment of the present invention.
  • the main difference between the third embodiment and the first embodiment is that the structure of the elastic wave is different.
  • the elastic wave 2' is a racetrack type structure, wherein the first fixed portion 21' is A circular mounting hole is provided at the center of the track type elastic wave 2', and the second fixing portion 22' is a plane mounting portion provided at the racetrack type edge of the track type elastic wave 2'.
  • the design of the racetrack type structure is more conducive to the thinning of the product design than the circular elastic wave structure, and further reduces the product size of the moving coil type electroacoustic transducer.
  • the side wall of the outer casing 4 is further provided with a circuit board 5 for electrical connection.
  • the basin frame may also be a closed structure, and the invention is further designed by extending the voice coil bracket to the outside of the magnetic circuit; the elastic wave may also be in other shapes, or may be in other manners. Fixing with the voice coil bracket and the outer casing; the first fixed portion of the elastic wave can also be flexibly set to an elliptical shape, a racetrack type, etc. according to the structure of the corresponding voice coil bracket to facilitate fixing the shape of the voice coil bracket and the elastic wave; Neither affects the implementation of the inventive creation.

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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

La présente invention concerne un transducteur électroacoustique dynamique en forme de bande, comprenant : un système de vibration, le système de vibration comportant un diaphragme et un élément de commande combiné au diaphragme, l'élément de commande contenant un tube à bobine acoustique et un support de bobine acoustique supportant le tube à bobine acoustique ; un système à circuit magnétique formé en combinant une rondelle, un aimant et une structure de membrane de haut-parleur du haut en bas ; un logement destiné à loger et à fixer le système de vibration et le système à circuit magnétique ; des registres disposés aux deux extrémités du support de bobine acoustique respectivement. Le milieu du registre comporte une première partie de fixation, le bord du registre est muni d'une deuxième partie de fixation. La première partie de fixation est fixée sur le support de bobine acoustique. La deuxième partie de fixation est fixée sur le logement. Dans la présente invention, le registre est disposé directement entre l'élément de commande du système à circuit magnétique et le logement, afin d'obtenir un meilleur effet pour empêcher une polarisation, améliorant ainsi les performances acoustiques du transducteur électroacoustique dynamique.
PCT/CN2011/080780 2011-05-31 2011-10-14 Transducteur électroacoustique dynamique Ceased WO2012163003A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201120181315.2 2011-05-31
CN 201120181315 CN202068566U (zh) 2011-05-31 2011-05-31 动圈式电声转换器

Publications (1)

Publication Number Publication Date
WO2012163003A1 true WO2012163003A1 (fr) 2012-12-06

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ID=45062414

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/080780 Ceased WO2012163003A1 (fr) 2011-05-31 2011-10-14 Transducteur électroacoustique dynamique

Country Status (2)

Country Link
CN (1) CN202068566U (fr)
WO (1) WO2012163003A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113423047A (zh) * 2021-06-11 2021-09-21 歌尔股份有限公司 弹性支片及电子装置
CN117857990A (zh) * 2024-03-08 2024-04-09 瑞声光电科技(常州)有限公司 扬声器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202183864U (zh) * 2011-08-19 2012-04-04 歌尔声学股份有限公司 动圈式电声转换器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201657279U (zh) * 2010-05-18 2010-11-24 歌尔声学股份有限公司 动圈式电声转换器
CN201667712U (zh) * 2010-04-22 2010-12-08 歌尔声学股份有限公司 一种动圈式电声转换器
CN201699967U (zh) * 2010-06-28 2011-01-05 歌尔声学股份有限公司 动圈式电声转换器
CN102075835A (zh) * 2011-02-25 2011-05-25 惠州超声音响有限公司 电动式扬声器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201667712U (zh) * 2010-04-22 2010-12-08 歌尔声学股份有限公司 一种动圈式电声转换器
CN201657279U (zh) * 2010-05-18 2010-11-24 歌尔声学股份有限公司 动圈式电声转换器
CN201699967U (zh) * 2010-06-28 2011-01-05 歌尔声学股份有限公司 动圈式电声转换器
CN102075835A (zh) * 2011-02-25 2011-05-25 惠州超声音响有限公司 电动式扬声器

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113423047A (zh) * 2021-06-11 2021-09-21 歌尔股份有限公司 弹性支片及电子装置
CN113423047B (zh) * 2021-06-11 2022-09-20 歌尔股份有限公司 弹性支片及电子装置
CN117857990A (zh) * 2024-03-08 2024-04-09 瑞声光电科技(常州)有限公司 扬声器
CN117857990B (zh) * 2024-03-08 2024-05-17 瑞声光电科技(常州)有限公司 扬声器

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