WO2021000094A1 - Haut-parleur - Google Patents

Haut-parleur Download PDF

Info

Publication number
WO2021000094A1
WO2021000094A1 PCT/CN2019/093990 CN2019093990W WO2021000094A1 WO 2021000094 A1 WO2021000094 A1 WO 2021000094A1 CN 2019093990 W CN2019093990 W CN 2019093990W WO 2021000094 A1 WO2021000094 A1 WO 2021000094A1
Authority
WO
WIPO (PCT)
Prior art keywords
diaphragm
front cover
bonding surface
groove
adhesive
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/CN2019/093990
Other languages
English (en)
Chinese (zh)
Inventor
张古清
于忠良
吴喆敏
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.)
AAC Technologies Holdings Shenzhen Co Ltd
AAC Technologies Pte Ltd
Original Assignee
AAC Acoustic Technologies Shenzhen Co Ltd
AAC Technologies Pte Ltd
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 AAC Acoustic Technologies Shenzhen Co Ltd, AAC Technologies Pte Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Priority to PCT/CN2019/093990 priority Critical patent/WO2021000094A1/fr
Priority to CN201910605953.3A priority patent/CN110267175A/zh
Publication of WO2021000094A1 publication Critical patent/WO2021000094A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H04R9/025—Magnetic circuit
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the invention relates to the field of sound and electricity, in particular to a loudspeaker.
  • the speaker of the prior art is generally realized by increasing the width of the glued surface between the front cover and the diaphragm, which will reduce the acoustic performance of the product.
  • the purpose of the present invention is to provide a loudspeaker that can realize deep waterproofing between the front cover and the diaphragm without reducing the acoustic performance of the product.
  • a speaker including a basin frame with a receiving space and a vibration system contained in the receiving space, the vibration system including a diaphragm fixed to the basin frame, the speaker further comprising A front cover superimposed on the diaphragm, the diaphragm is arranged between the basin frame and the front cover, and the speaker further includes an adhesive bonded between the front cover and the diaphragm.
  • Adhesive layer the side of the diaphragm facing the front cover has a first adhesive surface arranged around the outer edge of the diaphragm, and the side of the front cover facing the diaphragm has an edge
  • the outer edge of the front cover is arranged around a second bonding surface corresponding to the first bonding surface, the second bonding surface is recessed with a groove
  • the adhesive layer includes A first adhesive layer between the first adhesive surface and the second adhesive surface and a second adhesive layer filled between the first adhesive surface and the groove.
  • the depth of the groove is 0.01 mm to 0.1 mm.
  • the grooves extend from the second bonding surface in a direction away from the first bonding surface in a direction perpendicular to the second bonding surface in a form of equal width extension.
  • the second adhesive surface includes an outer adhesive surface provided between the outer edge of the front cover and the groove, and an inner adhesive surface provided on the inner side of the groove.
  • the groove is provided between the outer bonding surface and the inner bonding surface.
  • both the outer adhesive surface and the inner adhesive surface are flat.
  • the outer adhesive surface and the inner adhesive surface are coplanar.
  • the first bonding surface is flat.
  • first bonding surface and the second bonding surface are both annular.
  • the front cover includes a top wall opposite to and spaced apart from the diaphragm, and a side wall that is bent and extended from the edge of the top wall toward the basin frame, and the side wall is away from the One end of the top wall is an end surface, the end surface forms the second bonding surface and the groove, and the top wall is penetrated with a sound hole.
  • the groove is annular, and the width of the groove in the vibration direction perpendicular to the diaphragm is 1/4 of the width of the end surface in the vibration direction perpendicular to the diaphragm ⁇ 1/2.
  • the beneficial effect of the present invention is that the present invention provides a groove on the second bonding surface of the front cover for bonding with the diaphragm, so that the amount of local glue between the front cover and the diaphragm can be increased, which is equivalent to Increasing the bonding area between the front cover and the diaphragm in a disguised manner can effectively increase the bonding fastness between the two, thereby achieving the purpose of deep waterproofing without reducing the acoustic performance of the product.
  • FIG. 1 is a schematic diagram of a three-dimensional structure of a front cover and a diaphragm provided by an embodiment of the present invention
  • Figure 2 is a half-sectional perspective view of A-A in Figure 1;
  • Figure 3 is a partial enlarged view of B in Figure 2;
  • FIG. 4 is an exploded schematic diagram of the front cover and the diaphragm provided by an embodiment of the present invention.
  • Figure 5 is a partial enlarged view of C in Figure 4.
  • FIG. 6 is a schematic diagram of a three-dimensional structure of a speaker provided by an embodiment of the present invention.
  • Figure 7 is a half-sectional perspective view of D-D in Figure 6;
  • Fig. 8 is an exploded view of a speaker provided by an embodiment of the present invention.
  • the speaker provided by an embodiment of the present invention includes a basin stand 100, a front cover 200, a vibration system 300, and a magnetic circuit system 400.
  • the basin stand has a receiving space 110, and the vibration system 300 and the magnetic circuit system 400 are housed in In the accommodating space 110, the front cover 200 is arranged on one side of the basin frame 100.
  • the vibration system 300 includes a diaphragm 310 fixed to the basin frame 100 and a voice coil 320 supported on one side of the diaphragm 310.
  • the front cover 200 is stacked on the diaphragm 310, and the diaphragm 310 is provided between the front cover 200 and the basin frame 100.
  • the magnetic circuit system 400 includes a magnetic bowl 410 fixed on the side of the basin frame 100 away from the diaphragm 310, and a main magnet 420 and a side magnet 430 fixed to the magnetic bowl 410.
  • the side magnets 430 are located on opposite sides of the main magnet 420.
  • the side and the main magnet 420 are spaced apart to form a magnetic gap 440, and a circle of the voice coil 320 away from the diaphragm 310 is suspended in the magnetic gap 440.
  • the speaker further includes an adhesive layer 500 adhered between the front cover 200 and the diaphragm 310.
  • the side of the diaphragm 310 facing the front cover 200 has a first adhesive surface 311 arranged around the outer edge of the diaphragm 310, and the side of the front cover 200 facing the diaphragm 310 has a side along the outer edge of the front cover 200
  • the second bonding surface 210 is arranged around and corresponding to the first bonding surface 311.
  • the second bonding surface 210 is recessed with a groove 220.
  • the adhesive layer 500 includes the first bonding surface 311 and the second bonding surface.
  • the groove 220 is specifically formed from the second bonding surface 210 toward a direction away from the first bonding surface 311.
  • the embodiment of the present invention uses the second bonding surface 210 on the front cover 200 for bonding with the diaphragm 310.
  • a groove 220 is provided on the upper part, so that the amount of local glue between the front cover 200 and the diaphragm 310 can be increased, which is equivalent to a disguised increase in the glue area between the front cover 200 and the diaphragm 310, thereby effectively increasing the glue between the two Fastness, in turn, can achieve the purpose of deep waterproofing without reducing the acoustic performance of the product.
  • the front cover 200 includes a top wall 230 opposed to the diaphragm 310 and spaced apart, and side walls bent and extended from the edge of the top wall 230 toward the frame 100. 240.
  • An end of the side wall 240 away from the top wall 230 is a bottom surface 250, the end surface 250 forms a second bonding surface 210 and a groove 220, and the top wall 230 has a sound hole 260 extending therethrough.
  • the sound is transmitted from the sound hole 270 to the outside.
  • the depth h of the groove 220 is 0.01 mm to 0.1 mm.
  • the groove 220 has a groove bottom surface away from the second bonding surface 210, and the depth h of the groove 220 specifically refers to the distance between the groove bottom surface and the second bonding surface 210.
  • setting the depth h of the groove 220 to be 0.01 mm to 0.1 mm can achieve the purpose of increasing the amount of local glue between the front cover 200 and the diaphragm 310 without affecting the front cover 200 due to the setting of the groove 220
  • the structure is rigid, and it also facilitates the manufacturing and molding of the groove 220.
  • the depth h of the groove 220 is not limited to this range.
  • the first bonding surface 311 and the second bonding surface 210 are both ring-shaped, and the adhesive layer 500 surrounds the front cover 200 and the diaphragm 310 to seal the front cover 200 and the vibrating membrane 310 around a circle, which helps to ensure the waterproof sealing effect.
  • the second bonding surface 210 includes an outer bonding surface 211 provided between the outer edge of the front cover 200 and the groove 220, and an inner bonding surface provided inside the groove 220 212.
  • the groove 220 is provided between the outer bonding surface 211 and the inner bonding surface 212.
  • the positions corresponding to the outer bonding surface 211 and the inner bonding surface 212 can form gear bosses on both sides of the groove 220, so that the glue can be better contained in the groove 220, which is more conducive to Increase the bonding fastness between the diaphragm 310 and the front cover 200.
  • the groove 220 extends from the second bonding surface 210 in a direction away from the first bonding surface 311 in a direction perpendicular to the second bonding surface 210 in a form of equal width extension, so that The groove 220 is easier to manufacture and shape.
  • the width t 1 of the groove 220 specifically refers to the distance between the groove wall of the groove 220 close to the outer bonding surface 211 and the groove wall of the groove 220 close to the inner bonding surface 212, that is, the groove 220 is perpendicular to the diaphragm.
  • the width of 310 in the vibration direction is provided.
  • the groove 220 is ring-shaped, and the width t 1 of the groove 220 in the vibration direction perpendicular to the diaphragm 310 is the width of the end surface 250 in the vibration direction perpendicular to the diaphragm 310.
  • width t 2 1/4 ⁇ 1/2 i.e. the grooves 220 t 1 of the width of the groove 220, the width of the outer adhesive surface 211 of the inner adhesive surface 212 of the width and t 2 1/4 ⁇ 1/2.
  • the sum t 2 of the width of the groove 220, the width of the outer bonding surface 211, and the width of the inner bonding surface 212 is the difference between the outer ring edge of the outer bonding surface 211 and the inner ring edge of the inner bonding surface 212
  • the distance is the width of the second bonding surface 210.
  • the width t 1 of the groove 220 is set at 1/4 to 1/2 of the sum t 2 of the width of the groove 220, the width of the outer adhesive surface 211 and the width of the inner adhesive surface 212, which can reach
  • the purpose of increasing the amount of local glue between the front cover 200 and the diaphragm 310 will not affect the structural rigidity of the front cover 200 due to the arrangement of the groove 220.
  • both the outer bonding surface 211 and the inner bonding surface 212 are flat, so that the structure of the front cover 200 can be relatively simple and easy to manufacture.
  • the outer bonding surface 211 and the inner bonding surface 212 are coplanar (that is, in the same plane), that is, the outer bonding surface 211 and the inner bonding surface 212 are flush, which facilitates the manufacture of the front cover 200.
  • the outer adhesive surface 211 and the inner adhesive surface 212 can also be set in different planes, that is, the outer adhesive surface 211 and the inner adhesive surface 212 have a height. A low setting.
  • the first bonding surface 311 is flat. In this way, the structure of the diaphragm 310 can be made relatively simple and easy to manufacture.
  • an embodiment of the present invention also provides a mobile terminal device, which includes a housing and the aforementioned speaker, and the speaker is installed in the housing. Since the mobile terminal device provided in this embodiment adopts the above-mentioned speaker, the deep waterproof performance of the product can be improved without reducing the acoustic performance of the product.
  • the mobile terminal device is a mobile phone or tablet computer or mp3 or mp4 or mp5.
  • the mobile phone, tablet computer, mp3, mp4, and mp5 adopt the structural design scheme of the speaker in this embodiment, all of which can be used without reducing the acoustic performance of the product. , To improve the depth waterproof performance between the front cover 200 and the diaphragm 310.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

Un haut-parleur, qui comprend un cadre de bassin, un couvercle avant, et un système de vibration, est fourni. Le système de vibration comprend un diaphragme de vibration fixé au cadre de bassin, et le diaphragme de vibration est disposé entre le cadre de bassin et le couvercle avant. Le haut-parleur comprend en outre une couche adhésive entre le couvercle avant et le diaphragme de vibration. Un côté du diaphragme de vibration faisant face au couvercle avant comprend une première surface de liaison disposée de façon à entourer le bord externe du diaphragme de vibration, et un côté du couvercle avant faisant face au diaphragme de vibration comprend une seconde surface de liaison disposée de façon à entourer le bord externe du couvercle avant et disposée de façon à correspondre à la première surface de liaison. Une rainure est ménagée en retrait sur la seconde surface de liaison, et la couche adhésive comprend une première couche adhésive remplie entre la première surface de liaison et la seconde surface de liaison ainsi qu'une seconde couche adhésive remplie entre la première surface de liaison et la rainure. Dans la présente invention, la rainure est disposée sur la seconde surface de liaison du couvercle avant, et en tant que telle, la quantité d'adhésif local entre le couvercle avant et le diaphragme de vibration peut être augmentée, ce qui permet d'augmenter efficacement la solidité du collage entre les deux. Par conséquent, le but d'imperméabilisation profonde peut être obtenu, tandis que les performances acoustiques du produit ne sont pas réduites.
PCT/CN2019/093990 2019-06-29 2019-06-29 Haut-parleur Ceased WO2021000094A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2019/093990 WO2021000094A1 (fr) 2019-06-29 2019-06-29 Haut-parleur
CN201910605953.3A CN110267175A (zh) 2019-06-29 2019-07-05 扬声器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/093990 WO2021000094A1 (fr) 2019-06-29 2019-06-29 Haut-parleur

Publications (1)

Publication Number Publication Date
WO2021000094A1 true WO2021000094A1 (fr) 2021-01-07

Family

ID=67924672

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/093990 Ceased WO2021000094A1 (fr) 2019-06-29 2019-06-29 Haut-parleur

Country Status (2)

Country Link
CN (1) CN110267175A (fr)
WO (1) WO2021000094A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204697285U (zh) * 2015-05-30 2015-10-07 歌尔声学股份有限公司 微型扬声器
CN204948334U (zh) * 2015-07-30 2016-01-06 歌尔声学股份有限公司 扬声器
CN207732976U (zh) * 2017-12-22 2018-08-14 深圳君泽电子有限公司 防水喇叭及电子产品
CN109862483A (zh) * 2018-12-29 2019-06-07 瑞声声学科技(深圳)有限公司 一种扬声器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109587604A (zh) * 2018-11-08 2019-04-05 瑞声科技(新加坡)有限公司 扬声器及其组装方法
CN209526868U (zh) * 2018-12-29 2019-10-22 瑞声科技(新加坡)有限公司 扬声器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204697285U (zh) * 2015-05-30 2015-10-07 歌尔声学股份有限公司 微型扬声器
CN204948334U (zh) * 2015-07-30 2016-01-06 歌尔声学股份有限公司 扬声器
CN207732976U (zh) * 2017-12-22 2018-08-14 深圳君泽电子有限公司 防水喇叭及电子产品
CN109862483A (zh) * 2018-12-29 2019-06-07 瑞声声学科技(深圳)有限公司 一种扬声器

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