WO2020082996A1 - Haut-parleur - Google Patents

Haut-parleur Download PDF

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Publication number
WO2020082996A1
WO2020082996A1 PCT/CN2019/108991 CN2019108991W WO2020082996A1 WO 2020082996 A1 WO2020082996 A1 WO 2020082996A1 CN 2019108991 W CN2019108991 W CN 2019108991W WO 2020082996 A1 WO2020082996 A1 WO 2020082996A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
magnetic yoke
yoke
speaker
magnetic
Prior art date
Application number
PCT/CN2019/108991
Other languages
English (en)
Chinese (zh)
Inventor
李泉儒
李振军
高远
李承伟
Original Assignee
歌尔股份有限公司
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 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2020082996A1 publication Critical patent/WO2020082996A1/fr

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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
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • 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
    • H04R9/02—Details
    • H04R9/022—Cooling arrangements
    • 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 technical field of electroacoustic products, and more particularly, to a speaker.
  • Loudspeaker is an important acoustic component of portable electronic equipment, used to complete the conversion between electrical signals and sound signals, is an energy conversion device.
  • the speaker usually includes a housing and a vibration system and a magnetic circuit system housed in the housing.
  • the magnetic circuit system includes a magnetic yoke.
  • the connection between the housing and the magnetic yoke also adopts the traditional surface-to-surface contact bonding. This structure makes the colloid not only be affected by the lateral shear force but also the longitudinal pressure, and the magnetic yoke is prone to occur.
  • the colloid between the shell and the shell breaks. After the colloid breaks, the adhesion between the magnetic yoke and the shell is invalid, the product leaks, and the product cannot meet the air tightness requirements, resulting in the product being unable to be used normally.
  • the purpose of the present invention is to provide a loudspeaker that protects the colloid from lateral shearing forces, greatly reduces the possibility of colloidal fracture between the housing and the magnetic yoke, and at the same time enables the housing and the magnetic yoke to be more tightly fixed , Increase the sealing of the product, and also improve the convenience of applying colloid.
  • the present invention provides a loudspeaker, including: a housing formed with an accommodating cavity and a loudspeaker monomer accommodated in the accommodating cavity; the loudspeaker monomer includes a magnetically permeable yoke; An assembly structure formed by the cooperation of the convex structure and the concave structure is included between the corresponding shells of the magnetic yoke.
  • the convex structure is formed on the magnetic yoke
  • the convex structure is a boss extending outward from the bottom surface of the magnetic yoke
  • the concave structure is formed on the housing
  • the recessed structure is a recess formed by recessing the inner side surface of the housing
  • the raised structure is formed on the housing, the raised structure is a boss extending outward from the inner surface of the housing, the recessed structure is formed on the magnetic yoke, and the recessed structure is The bottom surface of the magnetic yoke is formed by a recess formed inward.
  • a preferred solution is that an assembly gap is left between the surface of the convex structure and the surface of the concave structure, and a glue storage groove is formed in the assembly gap, and the glue storage groove is filled with a sealant.
  • the glue storage groove is located between the top surface of the convex structure and the bottom surface of the concave structure.
  • a preferred solution is that the bottom surface of the magnetic yoke and the corresponding inner surface of the housing are bonded and fixed.
  • the assembly structure is a continuous ring structure or a segmented structure.
  • a preferred solution is that a through hole penetrating the inner and outer surfaces of the housing is formed on the housing corresponding to the magnetic yoke, and the vertical projection of the through hole is located in the vertical projection area of the magnetic yoke;
  • the assembly structure is located on the edge of the magnetic yoke outside the edge of the through hole.
  • the bottom surface edge of the magnetic yoke and the inner surface of the housing corresponding to the edge of the through hole are adhered and fixed.
  • the bottom edge of the magnetic yoke is formed with a depressed flange, and other parts of the bottom surface of the magnetic yoke are formed with a ridge.
  • the ridge and the flange are connected by a slope transition.
  • the assembly structure is located on the edge.
  • the housing is a single speaker housing or a speaker module housing.
  • the loudspeaker provided by the present invention is equipped with an assembly structure formed by the cooperation of the convex structure and the concave structure between the magnetic conductive yoke and the casing corresponding to the magnetic conductive yoke, so that the colloid does not need to be subjected to lateral shear forces, which greatly reduces the casing and
  • the possibility of colloidal collapsing between the magnetic yokes at the same time makes the housing and the magnetic yoke more tightly connected and fixed, which improves the sealing of the product.
  • the speaker provided by the present invention has an assembly gap between the surface of the convex structure and the surface of the concave structure, and a glue storage groove is formed in the assembly gap, and the glue storage groove is filled with a sealant, which is sealed by
  • the glue can directly fix and fix the magnetic yoke and the bottom case, which improves the convenience of applying the colloid; at the same time, it can prevent too much glue from being generated when the magnetic yoke and the shell are bonded and fixed, keeping the bottom of the speaker flat and beautiful, and easy to assemble.
  • the speaker provided by the present invention is formed with a through hole penetrating the inner and outer surfaces of the housing at a position corresponding to the magnetic yoke of the housing.
  • the magnetic yoke is directly exposed outside the housing, and the speaker has better heat dissipation performance.
  • the housing part corresponding to the magnetic yoke can be provided as a steel sheet, so that the volume of the rear acoustic cavity can be increased, the rear acoustic cavity can be maximized as much as possible, and the acoustic performance of the speaker can be improved.
  • the shell part corresponding to the magnetic yoke can also be provided as a combination of a steel sheet and an injection molded case.
  • the magnetic yoke can correspond to an injection molded case or a steel sheet.
  • the heat generated by the speaker unit can be directly dissipated through the steel sheet, which effectively improves the overall heat dissipation capacity of the speaker and facilitates the speaker to work under high power for a long time.
  • FIG. 1 shows a schematic top view of a combination of a speaker according to a preferred embodiment of the present invention.
  • FIG. 2 shows a C-C cross-sectional view of FIG. 1.
  • FIG. 3 shows an enlarged view of part A of FIG. 2.
  • connection between the speaker shell and the magnetic yoke also adopts the traditional surface-to-surface contact bonding.
  • This structure makes the gel subject to both lateral shear force and longitudinal pressure, and the magnetic yoke is prone to occur.
  • the colloid between the shell and the shell is broken. After the colloid is broken, the adhesion between the magnetic yoke and the shell fails, which will cause the product to leak air and fail to meet the air tightness requirements of the product, resulting in the product not being able to be used normally.
  • the invention provides a loudspeaker, which protects the colloid from lateral shearing force, greatly reduces the possibility of colloid fracture between the casing and the magnetic yoke, and at the same time enables the casing and the magnetic yoke to be more closely combined and fixed, increasing The product's tightness also improves the convenience of applying colloid.
  • FIG. 1 shows a schematic top plan view of a combination of speaker modules according to a preferred embodiment of the present invention
  • FIG. 2 shows a CC cross-sectional view of FIG. 1
  • FIG. 3 shows part A of FIG. Zoom in.
  • the speaker includes a housing formed with an accommodating cavity and a speaker monomer accommodated in the accommodating cavity, and the speaker monomer includes a magnetic yoke.
  • the magnetic conducting yoke and the housing corresponding to the magnetic conducting yoke include an assembling structure formed by cooperation of a convex structure and a concave structure.
  • the speaker may be a single speaker or an integrated speaker module, which is not limited by the present invention.
  • the speaker module is taken as an example to describe the speaker of the present invention in detail below.
  • a speaker module includes a housing 1 formed with a receiving cavity and a speaker monomer 2 housed in the receiving cavity, the speaker monomer 2 includes a magnetically conductive yoke 3,
  • An assembly structure formed by cooperation between the convex structure 5 and the concave structure 4 is included between the magnetic yoke 3 and the housing 1 corresponding to the magnetic yoke.
  • the assembly structure formed by matching the convex structure 5 and the concave structure 4 between the magnetic conductive yoke 3 and the housing 1 corresponding to the magnetic conductive yoke can prevent the colloid from being subjected to lateral shearing force and reduce the housing and the magnetic conductive yoke The possibility of colloidal fracture between.
  • the convex structure 5 is formed on the magnetic conductive yoke 3, and the convex structure 5 is a boss extending outward from the bottom surface of the magnetic conductive yoke 3.
  • a recessed structure 4 is formed on the housing 1, and the recessed structure 4 is a groove formed by recessing the inner surface of the housing 1 inward; or, those skilled in the art should understand that in other embodiments, the The raised structure may also be formed on the housing.
  • the raised structure is a boss extending outward from the inner surface of the housing.
  • the recessed structure is formed on the magnetic yoke.
  • the recessed structure is The bottom surface of the magnetic conductive yoke is formed by a recess formed inward, which is not limited in the present invention.
  • an assembly gap is left between the surface of the convex structure and the surface of the concave structure, and a glue storage groove is formed in the assembly gap
  • the glue storage tank is filled with sealant, and the sealant can directly bond and fix the magnetic yoke and the bottom shell, which improves the convenience of applying the gel.
  • the rubber storage groove 6 is located on the top surface of the convex structure 5 and the depression Between the bottom surfaces of structure 4.
  • the length of the convex structure 5 can be up to 0.05-0.2 mm
  • the length of the concave structure 4 can be up to 0.05-0.2 mm
  • the length of the glue storage groove 6 can be up to 0.05 -0.1mm. This not only controls the size of the loudspeaker in the thickness direction, but also ensures the overall lightness and thinness of the loudspeaker, and also ensures that the magnetic yoke and the housing can be tightly combined and fixed.
  • the bottom surface of the magnetic yoke 3 and the corresponding inner surface of the housing 1 Bonding and fixing.
  • the assembly structure is a continuous ring structure, or a segmented structure, which enlarges the bonding area between the housing 1 and the magnetic yoke 3, and also increases the amount of glue applied between the housing 1 and the magnetic yoke 3 , Thereby increasing the adhesion strength between the housing 1 and the magnetic yoke 3.
  • Another preferred embodiment provided by the present invention is formed with a through hole penetrating the inner and outer surface of the housing corresponding to the magnetic yoke on the housing.
  • the vertical projection is located in the vertical projection area of the magnetic yoke; the assembly structure is located on the edge of the magnetic yoke outside the edge of the through hole.
  • the outer surface of the magnetic yoke is exposed on the outer side of the housing and is flush with the lower end surface of the housing.
  • a convex structure in the assembly structure is formed on the magnetic yoke
  • the convex structure is a boss extending outward from the bottom of the edge of the magnetic yoke
  • the concave structure Formed on the through hole the recessed structure is a groove formed by recessing the inner surface of the edge of the through hole; or, those skilled in the art should understand that in other embodiments, the protrusion A structure may also be formed on the through hole.
  • the convex structure is a boss extending outward from the inner surface of the edge of the through hole.
  • the concave structure is formed on the magnetic yoke.
  • the concave structure is The bottom surface of the edge of the magnetic conductive yoke is formed by a recess formed inward.
  • an assembly gap is left between the surface of the convex structure and the surface of the concave structure, and a glue storage groove is formed in the assembly gap, and the glue storage groove is filled with sealant, further Preferably, the glue storage groove is located between the top surface of the convex structure and the bottom surface of the concave structure.
  • the bottom surface of the edge of the magnetic yoke and the inner surface of the housing corresponding to the edge of the through hole are adhesively fixed; further, the assembly structure is a continuous ring structure, or a segmented structure; In the thickness direction, the length of the convex structure can reach 0.05-0.2 mm, the length of the concave structure can reach 0.05-0.2 mm, and the length of the glue storage tank can reach 0.05-0.1 mm. The present invention does not limit this.
  • a concave edge is formed at the edge of the bottom surface of the magnetic yoke, and other parts of the bottom surface of the magnetic yoke are formed with a ridge between the ridge and the edge
  • the assembly structure is located on the pressing edge.
  • the housing part corresponding to the magnetic yoke 3 of the present invention may be an injection molded housing, may be an integral steel sheet, or may be a combination of a steel sheet and an injection molded housing .
  • the steel sheet when the steel sheet is sealed and combined with the housing as a part of the housing, it not only ensures the structural strength of the housing, but also improves the overall heat dissipation effect of the speaker.
  • the present invention also provides another preferred embodiment of the speaker module structure, wherein the housing part corresponding to the same magnetic yoke is an integral steel sheet, the magnetic yoke and the same magnetic
  • the integral steel sheet corresponding to the yoke includes an assembly structure formed by cooperation of the convex structure and the concave structure.
  • the overall steel sheet expands the volume of the rear acoustic cavity of the speaker module to maximize the volume of the rear acoustic cavity.
  • the speaker module provided by the other preferred embodiment can achieve good acoustic performance; at the same time, the heat generated by the monomer can be directly dissipated through the steel sheet, which can effectively improve the overall heat dissipation capacity of the speaker.
  • the present invention also provides another preferred embodiment of the speaker module structure.
  • the housing part corresponding to the same conductive yoke is a steel sheet and
  • an assembly structure formed by the cooperation of the convex structure and the concave structure is formed between the magnetic conductive yoke and the housing corresponding to the magnetic conductive yoke.
  • the shell part corresponding to the position of the magnetic yoke on the shell may be a steel sheet or an injection molded case.
  • the steel sheet and the magnetic yoke Direct correspondence, better heat dissipation; when the position of the corresponding magnetic yoke on the shell is an injection molded case, the steel sheet helps to dissipate heat in the rear acoustic cavity.
  • the present invention is not limited.
  • the steel sheet and the magnetic yoke are made of the same material, and are all SPCG or SPCC steel materials. In other embodiments of the present invention, the steel sheet may also use other magnetically conductive steel materials.
  • the housing part corresponding to the magnetic yoke is an integral steel sheet
  • the inside and outside of the housing are formed at the position corresponding to the magnetic yoke
  • the through hole on the surface, the vertical projection of the through hole is located in the vertical projection area of the magnetic yoke
  • the assembly structure is located on the edge of the magnetic yoke outside the edge of the through hole, or the housing corresponding to the magnetic yoke
  • a part is a combination of a steel sheet and an injection molded case
  • a through hole penetrating the inner and outer surfaces of the housing is formed at a position corresponding to the magnetic yoke, and the vertical projection of the through hole is located in the vertical projection area of the magnetic yoke
  • the assembling structure is located on the edge of the magnetic yoke outside the edge of the through hole, which is not limited in the present invention.
  • the above embodiment is described in detail by taking the speaker module as an example.
  • it is a speaker unit
  • some speaker units will be combined with a bottom shell at the lower end of the magnetic yoke to protect the magnetic yoke.
  • An assembly structure formed by the cooperation of the convex structure and the concave structure is formed between the corresponding shells of the magnetic yoke.
  • the assembly structure is basically the same as that in the above embodiment, so it will not be repeated here.
  • the magnetic circuit system provided by the present invention may be a five-magnetic circuit system, including a central magnet located in the middle and a central magnetic yoke fixed therewith, and four side magnets arranged around the central magnet Combined with a fixed ring side magnetic yoke.
  • the magnetic circuit system provided by the present invention may also be a single magnetic circuit system or a three magnetic circuit system. Among them, the advantages of the single magnetic circuit system and the three magnetic circuit system relative to the prior art are the same as the advantages of the five magnetic circuit system relative to the prior art, and will not be repeated here.

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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 haut-parleur. Le haut-parleur comprend un boîtier pourvu d'une cavité de réception, et une unité de haut-parleur logée dans la cavité de réception ; l'unité de haut-parleur comprend une culasse magnétiquement conductrice, une structure d'assemblage formée par ajustement d'une structure convexe et d'une structure concave disposée entre la culasse magnétiquement conductrice et le boîtier correspondant à la culasse magnétiquement conductrice. Le haut-parleur selon la présente invention comprend une structure d'assemblage formée par ajustement de la structure convexe et de la structure concave entre la culasse magnétiquement conductrice et le boîtier correspondant à la culasse magnétiquement conductrice, de sorte que le colloïde soit protégé d'une force de cisaillement latérale, réduisant considérablement la possibilité de rupture de colloïde entre le boîtier et la culasse magnétiquement conductrice, permettant au boîtier et à la culasse magnétiquement conductrice d'être liés et fixés plus étroitement, augmentant la propriété d'étanchéité du produit, et améliorant également la commodité d'application de colloïde.
PCT/CN2019/108991 2018-10-26 2019-09-29 Haut-parleur WO2020082996A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811259995.8 2018-10-26
CN201811259995.8A CN109348374A (zh) 2018-10-26 2018-10-26 一种扬声器

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WO2020082996A1 true WO2020082996A1 (fr) 2020-04-30

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WO (1) WO2020082996A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109348374A (zh) * 2018-10-26 2019-02-15 歌尔股份有限公司 一种扬声器
WO2021000134A1 (fr) * 2019-06-30 2021-01-07 瑞声声学科技(深圳)有限公司 Enceinte de haut-parleur

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CN202310076U (zh) * 2011-09-05 2012-07-04 瑞声声学科技(常州)有限公司 微型扬声器
US20130156237A1 (en) * 2011-12-14 2013-06-20 Bujeon Co., Ltd. High power micro-speaker
CN105142074A (zh) * 2015-08-19 2015-12-09 歌尔声学股份有限公司 扬声器模组
CN207677986U (zh) * 2017-12-29 2018-07-31 歌尔科技有限公司 一种扬声器模组
CN109348374A (zh) * 2018-10-26 2019-02-15 歌尔股份有限公司 一种扬声器

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JP3908624B2 (ja) * 2002-07-25 2007-04-25 シチズン電子株式会社 電気音響変換器
JP2012010148A (ja) * 2010-06-25 2012-01-12 Sanyo Electric Co Ltd 電気音響変換装置
CN202841501U (zh) * 2012-10-15 2013-03-27 歌尔声学股份有限公司 扬声器模组
CN203301737U (zh) * 2013-06-29 2013-11-20 歌尔声学股份有限公司 扬声器模组
CN204180267U (zh) * 2014-11-12 2015-02-25 歌尔声学股份有限公司 扬声器模组
CN204578771U (zh) * 2015-05-05 2015-08-19 歌尔声学股份有限公司 扬声器
CN205596332U (zh) * 2016-03-28 2016-09-21 歌尔声学股份有限公司 扬声器模组
CN205793282U (zh) * 2016-05-17 2016-12-07 歌尔丹拿音响有限公司 扬声器
CN207968870U (zh) * 2018-03-30 2018-10-12 歌尔科技有限公司 一种扬声器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202310076U (zh) * 2011-09-05 2012-07-04 瑞声声学科技(常州)有限公司 微型扬声器
US20130156237A1 (en) * 2011-12-14 2013-06-20 Bujeon Co., Ltd. High power micro-speaker
CN105142074A (zh) * 2015-08-19 2015-12-09 歌尔声学股份有限公司 扬声器模组
CN207677986U (zh) * 2017-12-29 2018-07-31 歌尔科技有限公司 一种扬声器模组
CN109348374A (zh) * 2018-10-26 2019-02-15 歌尔股份有限公司 一种扬声器

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