WO2018095033A1 - Unité de haut-parleur et module de haut-parleur - Google Patents

Unité de haut-parleur et module de haut-parleur Download PDF

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Publication number
WO2018095033A1
WO2018095033A1 PCT/CN2017/090635 CN2017090635W WO2018095033A1 WO 2018095033 A1 WO2018095033 A1 WO 2018095033A1 CN 2017090635 W CN2017090635 W CN 2017090635W WO 2018095033 A1 WO2018095033 A1 WO 2018095033A1
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WO
WIPO (PCT)
Prior art keywords
magnet
lower magnetic
speaker
plate
speaker unit
Prior art date
Application number
PCT/CN2017/090635
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English (en)
Chinese (zh)
Inventor
刘岩涛
Original Assignee
歌尔股份有限公司
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Filing date
Publication date
Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2018095033A1 publication Critical patent/WO2018095033A1/fr

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    • 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
    • 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 invention belongs to the technical field of loudspeakers, and in particular to an improved loudspeaker unit and loudspeaker module.
  • the speaker has become an indispensable electroacoustic transducer accessory in electronic products.
  • consumers have better performance requirements for speakers, hope to have a clearer sound when talking, or hope that electronic products play music is better.
  • Those skilled in the art will improve the structure and materials of the speaker to meet better acoustic performance requirements.
  • the assembly method of the magnetic circuit component in the speaker assembly is fixed by bonding, but the surface of the lower magnetic conductive plate is smooth, and the magnet The bonding strength of the components is poor, and the magnet is apt to fall off. 4.
  • those skilled in the art can adopt a scheme of filling the sound absorbing material in the rear acoustic cavity of the single body or the module. Increase the virtual space of the rear cavity to improve the sound absorption performance, but the actual space limited by the rear cavity is limited.
  • the improvement of the acoustic performance of the speaker is limited; 5.
  • the heat generated by the speaker is severe during operation. If the heat is not obtained in time, the high temperature may cause damage to the vibration component.
  • a speaker unit comprising a vibration assembly and a magnetic circuit system, the magnetic circuit system comprising a magnet and a lower magnetic conductive plate, the lower magnetic conductive plate being made of a magnetically permeable metal foam
  • the magnet is fixedly disposed on the lower magnetic conductive plate
  • the vibration component includes a voice coil and a diaphragm, and the voice coil is fixedly connected to the diaphragm, and the voice coil is configured to be suspended in the magnetic circuit system.
  • the speaker unit includes a housing having a receiving cavity, an edge of the diaphragm is fixed on the housing, the voice coil is located in the receiving cavity, and the magnetic circuit system is fixedly disposed on the In the accommodating chamber, a space between the magnetic circuit system and the diaphragm is a rear cavity, and a channel structure in the magnetic conductive foam metal of the lower magnetic plate serves as a vent hole of the rear cavity.
  • the lower magnetically permeable plate is made of foamed steel or foamed nickel.
  • the magnet comprises a central magnet
  • the lower magnetic conductive plate has a side wall
  • the central magnet is disposed inside the sidewall of the lower magnetic conductive plate
  • the central magnet is formed between the central magnet and the sidewall There is a gap in which the voice coil is located.
  • the magnet comprises a central magnet disposed at a central region of the lower magnetically permeable plate, and a side magnet disposed at an edge of the lower magnetically permeable plate, the central magnet A gap is formed with the side magnet, and the voice coil is located in the gap.
  • the magnet and the lower magnetic conductive plate are adhesively fixed by an adhesive.
  • the housing is made of porous ceramic.
  • the present invention further provides a speaker module comprising a module housing and the speaker unit, wherein the speaker unit is disposed in the module housing.
  • the inventors of the present invention have found that, for the technical problems raised in the background art, those skilled in the art can adjust the structure of the speaker to a certain extent to prevent the speaker from a certain problem or some problems, thereby substantially reaching the standard. Claim. These adjustments are made, for example, by increasing the volume of the back cavity, increasing the area of the lower magnetic plate, and the like. Therefore, those skilled in the art do not consider designing a new technical solution to solve the above technical problems. Therefore, the present invention is to be realized The technical task or the technical problem to be solved is unexpected or unexpected by those skilled in the art, so the present invention is a new technical solution.
  • FIG. 1 is a side cross-sectional view of a speaker unit provided by the present invention.
  • the present invention provides a speaker unit that includes a vibrating assembly and a magnetic circuit system.
  • the magnetic circuit system includes a magnet and a lower magnetic conductive plate 12, and the magnet is fixedly disposed on the lower magnetic conductive plate 12, and the magnet, the lower magnetic conductive plate 12, and other magnetic circuit systems are constructed together.
  • the vibrating assembly includes a voice coil 21 and a diaphragm 22, and the voice coil 21 is fixedly coupled to the diaphragm 22, that is, the voice coil 21 is fixed to one side of the diaphragm 22.
  • the voice coil 21 is configured to be suspended above the lower magnetically permeable plate 12 such that the voice coil 21 can be in a magnetic field generated by the magnetic circuit system.
  • the lower magnetically permeable plate 12 is made of a magnetically permeable metal foam, and the use of a magnetically permeable metal foam for the lower magnetic permeable plate 12 enables the lower magnetically permeable plate 12 to have a good performance in many aspects.
  • the foam metal has a certain amount of pore structure, which makes the lower magnetic sheet have the ability to absorb shock and vibration. If the speaker unit or electronic product is subjected to a drop impact or impact, the lower magnetic sheet composed of the foam metal can absorb. A part of the vibrating assembly and the magnetic circuit system are subjected to the force to mitigate damage to the components and protect the speaker unit.
  • the vibration component of the speaker unit generates a large amount of heat during operation. If the heat dissipation performance of the monomer is poor, the internal high temperature may cause damage to the component. For example, the deformation performance of the diaphragm changes due to high temperature. , or the magnetic permeability of the magnetic circuit system is weakened in a high temperature environment.
  • the channel structure in the lower magnetic plate increases the surface area of the lower magnetic plate, and the channel structure also provides a better environment for air circulation to carry away the flowing air.
  • the lower magnetic plate made of metal foam improves the overall heat dissipation performance of the speaker unit, so that the heat generated by the vibration component can be effectively diffused to the outside of the unit through the lower magnetic plate.
  • the lower magnetic plate of the present invention also has a certain sound absorbing effect, and the channel structure can absorb sound vibration, thereby improving the acoustic performance of the speaker unit. If the speaker unit is disposed in the speaker module, the rear cavity area of the module can be used for sound absorption, bass sound improvement and the like, and the sound effect of the speaker module can be improved. In some cases, the space of the rear acoustic cavity of the module is limited, and the lower magnetic plate having a porous structure can compensate for the shortcoming of the space of the acoustic cavity behind the module.
  • the performance of the speaker unit can be improved from various aspects, and the reliability and acoustic performance of the speaker unit can be comprehensively improved.
  • the speaker unit includes a housing having a receiving cavity for carrying components of a speaker such as a vibrating assembly and a magnetic circuit system.
  • a speaker such as a vibrating assembly and a magnetic circuit system.
  • the edge of the diaphragm 22 may be fixed to the housing 3, the voice coil 21 is located in the receiving cavity, and the magnetic circuit system is fixedly disposed in the receiving cavity, the magnetic circuit
  • the space between the system and the diaphragm 22 is a rear cavity.
  • the lower magnetic conductive plate 12 is made of magnetic conductive foam metal, the hole structure in the following magnetic conductive plate 12 can be used as a sound vent hole of the rear cavity, and the vibration of the diaphragm will cause the rear cavity when the speaker unit is working.
  • the sound vent hole in the lower magnetic conductive plate 12 can supply air into and out of the rear cavity to balance the air pressure on both sides of the diaphragm.
  • the lower magnetic plate it is not necessary to additionally provide a sound vent hole on the lower magnetic plate by machining, which saves the processing steps and reduces the processing difficulty of the lower magnetic plate.
  • a person skilled in the art can change the porosity of the lower magnetic conductive plate by controlling the molding process of the lower magnetic conductive plate, thereby adjusting the size of the foam metal to meet the requirements of the sound leakage hole.
  • the invention does not limit whether the speaker unit has a housing. In other embodiments, the speaker unit can also be directly disposed in the outer casing of the module and fixed by the module housing.
  • the lower magnetically permeable plate can also perform the above functions.
  • the lower magnetic plate of the present invention is used for a magnetic circuit system, so the selected metal foam material needs to have magnetic permeability.
  • the lower magnetically permeable plate may be made of foamed steel or foamed nickel, both of which have good magnetic permeability.
  • the present invention does not specifically limit the metal foam material, and other materials may be selected in addition to the above two materials.
  • the magnet includes a center magnet
  • the lower magnetically conductive plate has a side wall
  • the center magnet is disposed inside a space surrounded by a side wall of the lower magnetic conductive plate.
  • a gap is formed between the side wall of the lower magnetic plate and the center magnet.
  • the voice coil is located in the gap. In the working state, the voice coil generates a large amount of heat, and the heat can be directly transmitted to the side wall of the lower magnetic conductive plate, and is lost to the speaker unit through the lower magnetic conductive plate as soon as possible.
  • the magnet may include a center magnet 111 and a side magnet 112, the lower magnetic plate 12 having only a bottom plate portion and no side walls.
  • the center magnet 111 is disposed at a central portion of the lower magnetic conductive plate 12, and the side magnet 112 is disposed at an edge of the lower magnetic conductive plate 12 to form between the central magnet 111 and the side magnet 112.
  • the center magnet 111 and the side magnet 112 can generate a stronger magnetic field.
  • the sound A ring 21 is located in the gap 13. In the operating state, heat generated by the voice coil 21 is transmitted to the lower magnetic conductive plate 12 through the center magnet 111 and the side magnet 112, or directly from the inside of the gap 13 to the lower magnetic conductive plate 12.
  • the magnet may be fixedly connected to the lower magnetic plate by bonding.
  • Bonding is usually achieved by an adhesive which has the drawbacks as described in the background.
  • the lower magnetic conductive plate of the present invention is made of a foamed metal material, the surface of the magnetic conductive plate below is an uneven surface, which contributes to the improvement of the adhesion of the adhesive, and can more firmly guide the lower guide.
  • the magnetic plate is bonded to the magnet to improve structural reliability.
  • the magnet may be fixedly connected to the lower magnetic plate by a process such as soldering, which is not limited in the present invention.
  • the housing may be made of porous ceramic, so that the housing can also better absorb shock, heat dissipation, etc., further Strengthen the structural reliability of the speaker unit.
  • the present invention further provides a speaker module, comprising: a module housing and the speaker unit, wherein the speaker unit is disposed in the module housing, and is made of a magnetic conductive metal foam.
  • the finished lower magnetic plate can play the role of sound absorption and heat dissipation in the speaker module, and effectively improve the acoustic performance and reliability of the speaker module.

Landscapes

  • 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 porte sur une unité de haut-parleur. L'unité de haut-parleur comprend un ensemble de vibration et un système de circuit magnétique, le système de circuit magnétique comprenant un aimant et une plaque de conduction magnétique inférieure, la plaque de conduction magnétique inférieure étant constituée d'un métal en mousse à conduction magnétique, l'aimant étant disposé de manière fixe sur la plaque de conduction magnétique inférieure, l'ensemble de vibration comprenant une bobine acoustique et un diaphragme, la bobine acoustique étant reliée de manière fixe au diaphragme, et la bobine acoustique étant configurée pour être suspendue dans le système de circuit magnétique. L'invention apporte une solution au problème technique relatif à l'amélioration des performances de dissipation de chaleur d'un haut-parleur. L'unité de haut-parleur de l'invention peut être appliquée à l'électronique grand public. (Figure 1)
PCT/CN2017/090635 2016-11-22 2017-06-28 Unité de haut-parleur et module de haut-parleur WO2018095033A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201611049299.5A CN106535068A (zh) 2016-11-22 2016-11-22 扬声器单体和扬声器模组
CN201611049299.5 2016-11-22

Publications (1)

Publication Number Publication Date
WO2018095033A1 true WO2018095033A1 (fr) 2018-05-31

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CN (1) CN106535068A (fr)
WO (1) WO2018095033A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112770237A (zh) * 2021-02-02 2021-05-07 歌尔股份有限公司 发声单体

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106535068A (zh) * 2016-11-22 2017-03-22 歌尔股份有限公司 扬声器单体和扬声器模组
CN109218927B (zh) * 2018-01-10 2021-12-28 歌尔股份有限公司 发声装置
CN108174332B (zh) * 2018-01-29 2020-08-25 歌尔股份有限公司 扬声器模组
CN109218939B (zh) * 2018-08-16 2020-09-18 歌尔股份有限公司 发声装置及电子设备
CN109511061B (zh) * 2018-12-27 2024-04-05 歌尔股份有限公司 微型发声器件和电子产品
CN111131971B (zh) * 2019-12-18 2021-07-23 歌尔股份有限公司 一种发声装置以及电子终端
CN112770236A (zh) * 2021-02-02 2021-05-07 歌尔股份有限公司 发声单体
CN112770233A (zh) * 2021-02-02 2021-05-07 歌尔股份有限公司 发声单体
CN113411697B (zh) * 2021-05-21 2022-09-20 歌尔股份有限公司 发声器件

Citations (6)

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CN202068561U (zh) * 2011-02-26 2011-12-07 歌尔声学股份有限公司 微型动圈式电声转换器
CN102595280A (zh) * 2012-01-18 2012-07-18 精拓丽音科技（北京）有限公司 一种带传感器反馈及驱动电路的扬声器集成系统
US20140270269A1 (en) * 2013-03-18 2014-09-18 Hugh C. Hsieh Loudspeaker device
CN105188003A (zh) * 2015-09-30 2015-12-23 歌尔声学股份有限公司 一种扬声器模组
CN105704626A (zh) * 2016-03-29 2016-06-22 歌尔声学股份有限公司 一种超薄扬声器模组
CN106535068A (zh) * 2016-11-22 2017-03-22 歌尔股份有限公司 扬声器单体和扬声器模组

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EP1843628A1 (fr) * 2006-04-07 2007-10-10 Sonion Horsens A/S Haut-parleur miniature et circuit magnetique avec passage de veine d'air integree

Patent Citations (6)

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Publication number Priority date Publication date Assignee Title
CN202068561U (zh) * 2011-02-26 2011-12-07 歌尔声学股份有限公司 微型动圈式电声转换器
CN102595280A (zh) * 2012-01-18 2012-07-18 精拓丽音科技（北京）有限公司 一种带传感器反馈及驱动电路的扬声器集成系统
US20140270269A1 (en) * 2013-03-18 2014-09-18 Hugh C. Hsieh Loudspeaker device
CN105188003A (zh) * 2015-09-30 2015-12-23 歌尔声学股份有限公司 一种扬声器模组
CN105704626A (zh) * 2016-03-29 2016-06-22 歌尔声学股份有限公司 一种超薄扬声器模组
CN106535068A (zh) * 2016-11-22 2017-03-22 歌尔股份有限公司 扬声器单体和扬声器模组

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112770237A (zh) * 2021-02-02 2021-05-07 歌尔股份有限公司 发声单体

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