WO2021138953A1 - Enceinte de haut-parleur - Google Patents

Enceinte de haut-parleur Download PDF

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Publication number
WO2021138953A1
WO2021138953A1 PCT/CN2020/074343 CN2020074343W WO2021138953A1 WO 2021138953 A1 WO2021138953 A1 WO 2021138953A1 CN 2020074343 W CN2020074343 W CN 2020074343W WO 2021138953 A1 WO2021138953 A1 WO 2021138953A1
Authority
WO
WIPO (PCT)
Prior art keywords
bracket
sound
upper cover
supporting wall
cavity
Prior art date
Application number
PCT/CN2020/074343
Other languages
English (en)
Chinese (zh)
Inventor
吴军
魏威
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)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 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2021138953A1 publication Critical patent/WO2021138953A1/fr

Links

Classifications

    • 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

Definitions

  • the utility model relates to the technical field of an electro-acoustic conversion device, in particular to a speaker box.
  • the speaker box of the related art includes an upper cover, a lower cover assembled with the upper cover to form an accommodating space, a sounding monomer and a ventilating partition accommodated in the accommodating space; the sounding monomer and the upper cover Enclosed into a front cavity, the sounding monomer, the upper cover and the lower cover jointly enclose a rear cavity, a barrier wall is formed in the rear cavity, and the air-permeable spacer is attached to the barrier wall and is connected to the barrier wall.
  • the blocking wall jointly partitions the rear cavity into a first rear cavity and a second rear cavity that are in air communication with each other, and the sound-producing monomer part is located in the first rear cavity.
  • the barrier wall and the air-permeable partition encapsulate the sound-absorbing particles in the second back cavity to form a DBASS space that serves as a virtual sound cavity.
  • the back cavity cannot be used efficiently due to the design limitation of the barrier wall structure. , Thereby limiting the low-frequency acoustic performance of the speaker box.
  • the purpose of the utility model is to provide a loudspeaker box with high filling efficiency and good low-frequency acoustic performance.
  • the present invention provides a loudspeaker box, which includes a lower cover, an upper cover covering the lower cover and enclosing a containing space together, a sounding monomer contained in the containing space, and a breathable Isolation component;
  • the upper cover includes an upper cover body covering the lower cover and a ring-shaped support wall protruding from the upper cover body to the lower cover, the sound-producing monomer is supported and fixed On the supporting wall, and divide the containing space into a front cavity and a back cavity, the air-permeable isolation assembly is located in the back cavity and separates the back cavity into a first back cavity and a second air communicating with each other
  • the air-permeable isolation assembly includes a bracket and an air-permeable isolator, the bracket covers the sound-producing monomer and is fixed to the support wall, and the bracket is provided with a leakage hole penetrating it, and the air-permeable isolator The parts are attached and fixed to the bracket
  • a glue containing groove for accommodating glue is formed between the supporting wall and the sound-producing monomer, and the bracket and the sound-producing monomer are supported and fixed to the supporting wall by the glue.
  • the supporting wall includes a first supporting wall protruding from the upper cover body in the direction of the lower cover and a second supporting wall extending from the outer periphery of the first supporting wall in the direction of the lower cover.
  • the sounding monomer is supported and fixed to an end of the first supporting wall close to the lower cover, and the sounding monomer is spaced apart from the second supporting wall.
  • the bracket includes a bracket body which is arranged directly opposite to the vocal unit and a ring-shaped first extension portion bent and extended from the periphery of the bracket body in a direction close to the upper cover;
  • An extension part is located between the sound emitting monomer and the second support wall; the leakage hole penetrates the bracket body and the first extension part at the same time.
  • the gas-permeable spacer includes a gas-permeable spacer body attached to the bracket body and a second extension portion bent and extended from the gas-permeable spacer body toward the upper cover, and the second extension portion Fixed to the first extension part.
  • the leakage holes include two, and the two leakage holes are respectively opened on opposite sides of the bracket.
  • the bracket is made of steel sheet.
  • the speaker box further includes a conductive terminal electrically connected to the sound-producing monomer; the bracket further includes a relief groove penetrating through the first extension; the conductive terminal is routed through the relief groove The first rear cavity extends to the second rear cavity.
  • the speaker box of the present invention does not have additional structures such as retaining walls and inserts in the rear cavity to form a filling space filled with sound-absorbing particles, but directly surrounds the sound-producing monomer with air-permeable spacers.
  • the air-permeable isolation component, and the air-permeable isolation component is fixed by glue in the glue containing space of the fixed sounding monomer.
  • This structure makes the second back cavity of the air-permeable isolation component far away from the sounding monomer after being filled with sound-absorbing particles.
  • the volume of the first back cavity is made as small as possible, and the volume of the second back cavity is made as large as possible, that is, the effective utilization rate of the back cavity as a virtual sound cavity is greatly improved.
  • Figure 1 is a schematic diagram of the three-dimensional structure of the speaker box of the present invention.
  • Figure 2 is an exploded schematic diagram of a part of the three-dimensional structure of the speaker box of the present invention.
  • Figure 3 is a schematic diagram of the assembly structure of the speaker box of the present invention without the lower cover;
  • Figure 4 is a schematic diagram of the three-dimensional structure of the ventilating isolation component of the present invention.
  • Figure 5 is a cross-sectional view taken along line A-A in Figure 1;
  • Fig. 6 is an enlarged view of the part B shown in Fig. 5.
  • the present invention provides a speaker box 100, which includes a lower cover 1, an upper cover 2, a sound-producing monomer 3, an air-permeable isolation component 4, and a conductive terminal 5.
  • the lower cover 1 covers the upper cover 2 and forms a receiving space 10 together.
  • the sound emitting unit 3 is received in the receiving space 10 and supported by the upper cover 2.
  • the upper cover 2 includes an upper cover body 21 covering the lower cover 1, an annular support wall 22 projecting from the upper cover body 21 in the direction of the lower cover, and The sound guide channel 23 of the upper cover body 21.
  • the supporting wall 22 includes a first supporting wall 221 protruding from the upper cover body 21 toward the lower cover 1, and a first supporting wall 221 extending from the outer periphery of the first supporting wall 221 toward the lower cover 1.
  • the second supporting wall 222 extending in the direction of the cover 1, that is, the first supporting wall 221 and the second supporting wall 222 form a supporting step structure.
  • the sound emitting unit 3 is supported and fixed to the supporting wall 22 and divides the receiving space 10 into a front cavity 101 and a rear cavity 102.
  • the sound emitting monomer 3 is supported and fixed to the first supporting wall 221 by glue.
  • the sounding monomer 3 is supported and fixed to an end of the first supporting wall 221 close to the lower cover 1, and the sounding monomer 3 and the second supporting wall 222 are spaced apart, that is, supported and fixed to On the supporting step structure formed by the first supporting wall 221 and the second supporting wall 222.
  • the sounding monomer 3 and the second supporting arm 222 are spaced to form a glue containing groove 8, and the sounding monomer 3 is fixed to the lower cover 1 after being glued in the glue containing groove 8.
  • the sound unit 3 includes a diaphragm 31 for vibrating and sounding.
  • the diaphragm 31 is spaced from the upper cover body 21 to form a front acoustic cavity 6, and the sound guide channel 23 connects the front acoustic cavity 6 with the outside world.
  • the front cavity 101 is formed together to form a side sounding structure.
  • the sound emitting monomer 3, the upper cover 2 and the lower cover 1 jointly enclose the rear cavity 102 for improving low-frequency acoustic performance.
  • the air-permeable isolation assembly 4 is located in the rear cavity 102 and divides the rear cavity 102 into a first rear cavity 1021 and a second rear cavity 1022 that are in air communication with each other.
  • the sound-emitting monomer 3 is at least partially located in the first rear cavity 1021, the second rear cavity 1022 is filled with sound-absorbing particles 7, and the air-permeable isolation component 4 encapsulates the sound-absorbing particles 7 in the second rear cavity 1022 to form a DBASS virtual acoustic cavity to further improve the low-frequency acoustic performance.
  • the air-permeable isolation assembly 4 includes a bracket 41 and an air-permeable isolation member 42.
  • the bracket 41 is made of steel sheet, and the bracket 41 is electrically isolated from the conductive terminal 5.
  • the bracket 41 is fixed to the support arm 22 and completely covers the sound-producing monomer 3, and the bracket 41 is provided with a leakage hole 43 penetrating therethrough, and the air-permeable spacer 42 is attached and fixed to the bracket 41 and completely cover the leak hole 43.
  • the bracket 41 includes a bracket body 411 disposed directly opposite to the sound emitting unit 3, a ring-shaped first extension 412 that is bent and extended from the periphery of the bracket body 411 toward the upper cover 2 and The recess 413 passes through the first extension 412; the first extension 412 is located between the sound emitting monomer 3 and the second support wall 222; the leak hole 43 passes through the bracket body at the same time 411 and the first extension 412.
  • the bracket 41 is fixed in the glue containing groove 8 on the outer peripheral side of the sounding monomer 3 by glue, and the glue connects the bracket 41 and the sounding monomer 3 into one body and forms a solidification.
  • the bracket 41 and the air-permeable spacer 42 make the air-permeable spacer element 4 form a three-dimensional structure, so that the second rear cavity 1022 of the air-permeable spacer element 4 away from the sound-producing monomer 3 is filled
  • the sound-absorbing particles 7 are all used as DBASS virtual sound chambers.
  • This structural arrangement makes the volume of the first back cavity 1021 as small as possible, and makes the volume of the second back cavity 1022 as large as possible, that is, the effective utilization rate of the back cavity 102 as a virtual acoustic cavity is greatly improved.
  • the leakage hole 43 includes two, and the two leakage holes 43 are respectively opened on opposite sides of the bracket 41.
  • the shape of the leakage hole 43 is not limited, and the leakage hole can be designed according to actual conditions. ⁇ 413.
  • the gas-permeable spacer 42 includes a gas-permeable spacer body 421 attached to the bracket body 411 and a second extension portion 422 that is bent and extended from the gas-permeable spacer body 421 in the direction of the upper cover 2.
  • the second extension portion 422 is fixed to the first extension portion 412.
  • the conductive terminal 5 is electrically connected to the sound emitting unit 3 and extends from the first rear cavity 1021 to the second rear cavity 1022, and extends to the outside of the speaker box 100 through the second rear cavity 1022, It is used to introduce external electrical signals to the sounding monomer 3.
  • the conductive terminal 5 extends from the first back cavity 1021 to the second back cavity 1022 through the relief groove 413.
  • the relief groove 413 needs to form a seal to prevent the sound-absorbing particles 7 from entering the first rear cavity 1021 from the relief groove 413.
  • the speaker box of the present invention does not have additional structures such as retaining walls and inserts in the rear cavity to form a filling space filled with sound-absorbing particles, but directly surrounds the sound-producing monomer with air-permeable spacers.
  • the air-permeable isolation component, and the air-permeable isolation component is fixed by glue in the glue containing space of the fixed sounding monomer.
  • This structure makes the second back cavity of the air-permeable isolation component far away from the sounding monomer after being filled with sound-absorbing particles.
  • the volume of the first back cavity is made as small as possible, and the volume of the second back cavity is made as large as possible, that is, the effective utilization rate of the back cavity as a virtual sound cavity is greatly improved.

Abstract

L'invention concerne une enceinte de haut-parleur, comprenant : un couvercle inférieur; un couvercle supérieur formant un espace de réception conjointement avec le couvercle inférieur; une unité de haut-parleur; et un ensemble entretoise perméable à l'air. Le couvercle supérieur comprend un corps principal de couvercle supérieur et une paroi de support. L'unité de haut-parleur est fixée à la paroi de support et supportée au niveau de celle-ci, et divise l'espace de réception en une cavité avant et une cavité arrière. L'ensemble entretoise perméable à l'air divise la cavité arrière en une première cavité arrière et une seconde cavité arrière en communication aérienne l'une avec l'autre. L'ensemble entretoise perméable à l'air comprend un cadre et un élément d'espacement perméable à l'air. Le cadre recouvre l'unité de haut-parleur et est fixé à la paroi de support. Le cadre est pourvu d'un trou de dégagement s'étendant à travers celui-ci. L'élément d'espacement perméable à l'air est fixé de manière fixe au cadre et recouvre complètement le trou de dégagement. La cavité acoustique arrière est remplie de particules d'absorption acoustique. L'ensemble entretoise perméable à l'air scelle les particules absorbant le son dans la seconde cavité arrière. Par rapport à l'art apparenté, l'enceinte de haut-parleur de la présente invention présente une efficacité de remplissage élevée et une excellente performance acoustique à basse fréquence.
PCT/CN2020/074343 2020-01-09 2020-02-05 Enceinte de haut-parleur WO2021138953A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202020046428.0U CN211321489U (zh) 2020-01-09 2020-01-09 扬声器箱
CN202020046428.0 2020-01-09

Publications (1)

Publication Number Publication Date
WO2021138953A1 true WO2021138953A1 (fr) 2021-07-15

Family

ID=72056512

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/074343 WO2021138953A1 (fr) 2020-01-09 2020-02-05 Enceinte de haut-parleur

Country Status (2)

Country Link
CN (1) CN211321489U (fr)
WO (1) WO2021138953A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112073853B (zh) * 2020-08-27 2021-12-24 瑞声新能源发展(常州)有限公司科教城分公司 发声器件
CN112153504A (zh) * 2020-08-27 2020-12-29 瑞声新能源发展(常州)有限公司科教城分公司 扬声器箱
CN112073849A (zh) * 2020-08-27 2020-12-11 瑞声新能源发展(常州)有限公司科教城分公司 扬声器箱
CN113411697B (zh) * 2021-05-21 2022-09-20 歌尔股份有限公司 发声器件
CN114979846B (zh) * 2022-04-07 2023-12-01 瑞声光电科技(常州)有限公司 一种扬声器箱

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170359649A1 (en) * 2016-06-09 2017-12-14 Em-Tech. Co., Ltd. Microspeaker Enclosure with Porous Materials in Resonance Space
CN108235198A (zh) * 2018-02-24 2018-06-29 歌尔股份有限公司 一种扬声器模组及电子设备
CN208386926U (zh) * 2018-06-26 2019-01-15 歌尔科技有限公司 扬声器模组
CN209731559U (zh) * 2019-05-06 2019-12-03 歌尔科技有限公司 一种扬声器模组

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170359649A1 (en) * 2016-06-09 2017-12-14 Em-Tech. Co., Ltd. Microspeaker Enclosure with Porous Materials in Resonance Space
CN108235198A (zh) * 2018-02-24 2018-06-29 歌尔股份有限公司 一种扬声器模组及电子设备
CN208386926U (zh) * 2018-06-26 2019-01-15 歌尔科技有限公司 扬声器模组
CN209731559U (zh) * 2019-05-06 2019-12-03 歌尔科技有限公司 一种扬声器模组

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