WO2021253539A1 - Caisson de haut-parleur - Google Patents

Caisson de haut-parleur Download PDF

Info

Publication number
WO2021253539A1
WO2021253539A1 PCT/CN2020/101277 CN2020101277W WO2021253539A1 WO 2021253539 A1 WO2021253539 A1 WO 2021253539A1 CN 2020101277 W CN2020101277 W CN 2020101277W WO 2021253539 A1 WO2021253539 A1 WO 2021253539A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
wall
yoke
upper cover
section
Prior art date
Application number
PCT/CN2020/101277
Other languages
English (en)
Chinese (zh)
Inventor
丁健华
吴树文
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 WO2021253539A1 publication Critical patent/WO2021253539A1/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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • 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 in the related art includes an upper cover, a lower cover assembled with the upper cover to form a containing space, a sound emitting unit separately contained in the containing space, a ring-shaped bracket, and a ventilating isolation component;
  • the isolation assembly includes a bracket that fixes the upper cover and surrounds the sound-producing unit, and a breathable spacer between the sound-producing unit and the lower cover.
  • the periphery of the breathable spacer is fixed to the bracket, so
  • the sound-producing monomer and the air-permeable isolation component jointly divide the containing space into a front cavity and a rear cavity, so as to realize a fully tankable structure in the rear cavity.
  • the bracket and the upper cover need to be assembled and glued first, and then the air-permeable spacer is assembled and glued to the bracket to realize the above-mentioned full-filled sound-emitting monomer isolation solution.
  • the structure has many assembly and gluing steps, which seriously affects the assembly production efficiency.
  • the purpose of the utility model is to provide a loudspeaker box with excellent low-frequency acoustic performance and high assembly efficiency.
  • the present invention provides a loudspeaker box, which includes a lower cover, an upper cover covered by the lower cover and jointly enclosing a receiving space, a sounding unit received in the receiving space, and a breathable Separator;
  • the upper cover includes an upper cover body covering the lower cover and a support wall protruding from the upper cover body to the direction of the lower cover, the sound-producing monomer is supported and fixed to the support
  • the upper cover further includes a fixed wall provided on the peripheral side of the sound emitting unit that protrudes from the support wall in the direction of the lower cover, and the sound emitting unit includes a magnetic circuit system that provides a driving force,
  • the magnetic circuit system includes a magnetic yoke arranged on a side of the sound emitting unit away from the upper cover, and the magnetic yoke includes a yoke body and a yoke body formed by recessing the periphery of the yoke body in the direction of the upper cover
  • the thickness of the main body portion is smaller than the depth of the recess of the yoke support portion.
  • the speaker box further includes a circuit board, one end of the circuit board is fixedly electrically connected to the sound emitting unit, and the other end of the circuit board extends outside the receiving space through the rear cavity, and the fixed wall is provided with A relief groove formed by one end of the lower cover recessed toward the supporting wall, the circuit board extends through the relief groove, and the extension wall abuts against the circuit board.
  • the circuit board includes a first section located between the fixed wall and the sound emitting unit, and extends from opposite ends of the first section to the sound emitting unit and is connected to the sound emitting unit.
  • a second section forming an electrical connection and a third section extending from the first section away from the sound emitting unit, the third section passing through the relief groove and extending through the upper cover to the receiving Outside the space, the extension wall abuts against the first section.
  • the upper cover is further provided with a supporting wall protruding from the outside thereof, and the third section is attached to the supporting wall.
  • the supporting wall is provided with a positioning post on one side close to the third section, and the third section is provided with a positioning hole penetrating therethrough, and the positioning post is inserted into the positioning hole.
  • the speaker box further includes a powder filling hole provided through the upper cover and/or the lower cover and a sealing cover covering the powder filling hole.
  • the air-permeable spacer is made of metal material.
  • the speaker box of the present invention supports and fixes the sound-producing monomer to the supporting wall and positions the air-permeable isolator between the sound-producing monomer and the lower cover.
  • the extension wall is inserted between the fixed wall and the sounding unit and arranged around the sounding unit; between the main body part and the yoke support part Glue is applied to form a fixation, and glue is applied between the extension wall and the fixed wall to form a fixation so that the air-permeable spacer and the sound-producing monomer jointly separate the containing space into a front cavity and a rear cavity.
  • the above structure makes The rear cavity on the side of the air-permeable isolator away from the sound-producing monomer can be filled with sound-absorbing particles as a virtual sound cavity, which greatly improves the filling efficiency of the sound-absorbing particles in the rear cavity and effectively improves the low-frequency acoustic performance of the speaker box.
  • the air-permeable spacer is further provided with a through hole penetrating the main body, and the yoke body is exposed to the main body through the through hole.
  • This structure makes the assembly of the air-permeable spacer easier and more accurate.
  • the accommodating space requirements are lower, especially in the thickness space along the vibration direction of the sound emitting monomer, which effectively improves the assembly efficiency and facilitates the thinning of the thickness of the speaker box.
  • 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 sectional view taken along the line A-A in Figure 1;
  • Figure 4 is a schematic diagram of the three-dimensional structure of the sound-producing monomer of the speaker box of the present invention.
  • Figure 5 is a schematic structural view of another embodiment of the powder filling hole in the speaker box of the present invention.
  • Figure 6 is a schematic structural view of another embodiment of the powder filling hole in the speaker box of the present invention.
  • the present invention provides a speaker box 100, which includes a lower cover 1, an upper cover 2, a sound-producing monomer 3, and an air-permeable isolation member 4.
  • the lower cover 1 is disposed on the upper cover 2 and jointly encloses a receiving space 10.
  • the upper cover 2 includes an upper cover body 21 covering the lower cover 1, a supporting wall 22 projecting and extending from the upper cover body 21 in the direction of the lower cover, and a support wall 22 formed on the upper cover
  • the sound guide channel 23 of the body 21 The sound unit 3 is supported and fixed to the supporting wall 22.
  • the supporting wall 22 is ring-shaped. This structure is beneficial to support and fix the sound emitting monomer 3.
  • the upper cover 2 further includes a fixed wall 25 provided on the peripheral side of the sounding monomer 3 and protrudingly extended from the supporting wall 22 in the direction of the lower cover 1.
  • the sound emitting unit 3 is received in the receiving space 10 and supported by the upper cover 2.
  • the sound generating unit 3 includes the vibration system 31 and a magnetic circuit system 32 that provides a driving force to drive the vibration system 31 to vibrate and produce sound.
  • the magnetic circuit system 32 includes a magnetic yoke 321 arranged on a side of the sound emitting unit 3 away from the upper cover 2.
  • the yoke 321 includes a yoke body 3211 and a yoke support portion 3212 formed by recessing the periphery of the yoke body 3211 in the direction of the upper cover 2.
  • the yoke support portion 3212 has a ring shape.
  • the air-permeable spacer 4 includes a main body 41 covering the sound-emitting monomer 3 and spaced apart from the lower cover 1, and an extension wall bent and extended from the periphery of the main body 41 toward the supporting wall 22 42 and a through hole 40 penetrating the main body 41.
  • the yoke body 3211 is exposed to the main body 41 through the through hole 40, and the main body 41 is connected to the magnetic Yoke support 3212. Specifically, the main body 41 and the yoke support portion 3212 are glued to form a fixation.
  • This structure makes the assembly of the air-permeable spacer 4 simpler and has lower requirements on the accommodation space 10, especially in the thickness space along the vibration direction of the sound-producing monomer 3, which effectively improves the assembly efficiency and is beneficial to
  • the speaker box 100 has a thinner thickness.
  • the thickness of the main body portion 41 is smaller than the depth of the recess of the yoke support portion 3212.
  • the yoke body 3211 passes through the through hole 40, and the main body 41 of the air-permeable spacer 4 abuts against the yoke support portion 3212, and moves along the sounding unit 3
  • the distance between the air-permeable spacer 4 and the lower cover 1 is longer than that of the sound-producing monomer 3, so that the space requirement for assembling is lower, so that the vibration of the sound-producing monomer 3 is particularly low.
  • the thickness space requirement in the direction is lower, which effectively improves the assembly efficiency and facilitates the thinning of the thickness of the speaker box 100.
  • the air-permeable spacer 4 is accommodated in the accommodating space 10 and is located between the sound-producing monomer 3 and the lower cover 1.
  • the air-permeable spacer 4 and the sound-producing monomer 3 jointly hold the
  • the space 10 is divided into a front chamber 101 and a rear chamber 102.
  • the front cavity 101 is used for sound production, and the sound guide channel 23 forms the front cavity 101 into a side sound emitting structure.
  • the rear cavity 102 is filled with sound-absorbing particles 5, and the air-permeable spacer 4 encapsulates the sound-absorbing particles 5 in the rear cavity 102 to form a DBASS virtual acoustic cavity for further improving low-frequency acoustic performance.
  • the vibration system 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 and forms the front cavity 101 together for forming a side sounding structure.
  • the sound emitting monomer 3, the air-permeable isolator 4, the upper cover 2 and the lower cover 1 jointly enclose the rear cavity 102 for improving low-frequency acoustic performance.
  • the extension wall 42 is inserted between the fixed wall 25 and the sound emitting unit 3 and arranged around the sound emitting unit 3.
  • the extension wall 42 and the fixed wall 25 are glued to form a fixation, so that the air-permeable spacer 4 and the sound-producing monomer 3 jointly divide the containing space 10 into a front cavity 101 and a rear cavity 102. Due to the simple process of the structure, the assembly efficiency of the speaker box 100 is high.
  • the air-permeable spacer 4 forms a three-dimensional structure and separates the sound-producing monomer 3 from the rear cavity 102 to prevent the sound-absorbing particles 5 from entering the sound-producing monomer 3 from the rear cavity 102 to affect the sound production performance, thereby effectively improving This improves the sounding reliability of the speaker box 100.
  • the air-permeable spacer 4 is made of metal material.
  • the air-permeable spacer 4 is made of a metal material, which is advantageous for processing and molding, and is also advantageous for improving assembly efficiency.
  • the above structure enables the rear cavity 102 on the side of the air-permeable spacer 4 away from the sound-emitting monomer 3 to be fully filled with sound-absorbing particles 5 as the D-BASS virtual sound cavity, which greatly improves the filling efficiency of the sound-absorbing particles 5 of the rear cavity 102 , which effectively improves the low-frequency acoustic performance of the speaker box 100.
  • the speaker box 100 further includes a circuit board 7, one end of the circuit board 7 is fixedly electrically connected to the sound emitting unit 3, and the other end of the circuit board 7 extends outside the receiving space 10 through the rear cavity 102 for the sound generation
  • the monomer 3 introduces an external electric signal.
  • the fixing wall 25 is provided with a relief groove 251 formed by its end close to the lower cover 1 recessed in the direction of the support wall 22, and the circuit board 7 passes through the relief groove 251.
  • the groove 251 extends and further extends to the outside of the accommodating space 10, and the extension wall 42 abuts against the circuit board 7 to prevent the sound-absorbing particles 5 from entering the inside of the sound-producing monomer 3 therefrom.
  • the circuit board 7 includes a first section 71 located between the fixed wall 25 and the sound emitting unit 3, and extends from opposite ends of the first section 71 to the sound emitting unit 3 and The second section 72 that is electrically connected to the sounding monomer 3 and the third section 73 that extends away from the sounding monomer 3 from the first section 71, the third section 73 is used to connect an external electric Signal.
  • the third section 73 passes through the relief groove 251 and penetrates the upper cover 2 to extend to the outside of the receiving space 10.
  • the extension wall 42 abuts against the first section 71 so as to limit the extension wall 42 to facilitate assembly and further improve assembly efficiency.
  • the upper cover 2 is further provided with a supporting wall 24 protruding from the outside thereof, and the third section 73 is attached to the supporting wall 24 to support the third section 73, which is convenient for communication with External electrical signal source connection.
  • the supporting wall 24 is provided with a positioning post 241 on one side close to the third section 73, and the third section 73 is provided with a positioning hole 731 passing through it, and the positioning post 241 is inserted into the third section 73.
  • the positioning hole 731 the positioning of the third section 73 is formed, which improves the assembly efficiency on the one hand, and prevents the movement of the third section 73 on the other hand, and improves the stability of the connection with the external power signal.
  • the speaker box 100 is further provided with a powder filling hole 9 and a sealing cover 91 covering the powder filling hole 9.
  • the powder filling hole 9 is in communication with the rear cavity 102 for filling the rear cavity 102 with sound-absorbing particles 5.
  • the powder filling holes 9 include at least two, and they are provided on the upper cover 2 and the lower cover 1 respectively.
  • the setting of the powder filling hole 9 is not limited to the above method, and can also be set separately:
  • the powder filling hole 509 includes the upper cover 502 and the sealing cover 591 covers the powder filling hole 509.
  • the powder filling hole 609 includes the lower cover 601 and the sealing cover 691 covers the powder filling hole 609.
  • the speaker box of the present invention supports and fixes the sound-producing monomer to the supporting wall and positions the air-permeable isolator between the sound-producing monomer and the lower cover.
  • the extension wall is inserted between the fixed wall and the sounding unit and arranged around the sounding unit; between the main body part and the yoke support part Glue is applied to form a fixation, and glue is applied between the extension wall and the fixed wall to form a fixation so that the air-permeable spacer and the sound-producing monomer jointly separate the containing space into a front cavity and a rear cavity.
  • the above structure makes The rear cavity on the side of the air-permeable isolator away from the sound-producing monomer can be filled with sound-absorbing particles as a virtual sound cavity, which greatly improves the filling efficiency of the sound-absorbing particles in the rear cavity and effectively improves the low-frequency acoustic performance of the speaker box.
  • the air-permeable spacer is further provided with a through hole penetrating the main body, and the yoke body is exposed to the main body through the through hole.

Abstract

Le présent modèle d'utilité concerne un caisson de haut-parleur, comprenant un couvercle inférieur, un couvercle supérieur, une unité de production de son, et un espaceur perméable à l'air. Le couvercle supérieur comprend un corps de couvercle supérieur, une paroi de support et une paroi fixe ; l'unité de production de son est fixée à la paroi de support ; l'unité de production de son comprend un système de circuit magnétique muni d'une culasse ; la culasse comprend un corps de culasse et une partie de support de culasse ; l'entretoise perméable à l'air est située entre l'unité de production de son et le couvercle inférieur ; l'entretoise perméable à l'air comprend une partie de corps principal, une paroi d'extension et un trou traversant ; le corps de culasse est exposé hors de la partie de corps principal au moyen du trou traversant ; la partie de corps principal est reliée à la partie de support de culasse ; la paroi d'extension est insérée entre la paroi fixe et l'unité de production de son et entoure l'unité de production de son ; un adhésif est appliqué entre la partie de corps principal et la partie de support d'étrier et entre la paroi d'extension et la paroi fixe pour réaliser la fixation, de sorte que l'espaceur perméable à l'air et l'unité de production de son divisent conjointement un espace de logement en une cavité avant et une cavité arrière ; la cavité arrière est remplie de particules absorbant le son ; et l'espaceur perméable à l'air encapsule les particules absorbant le son dans la cavité arrière. Par rapport à l'art apparenté, le caisson de haut-parleur du présent modèle d'utilité présente une excellente performance acoustique à basse fréquence et une efficacité d'assemblage élevée.
PCT/CN2020/101277 2020-06-15 2020-07-10 Caisson de haut-parleur WO2021253539A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202021105455.7 2020-06-15
CN202021105455.7U CN212628254U (zh) 2020-06-15 2020-06-15 扬声器箱

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WO2021253539A1 true WO2021253539A1 (fr) 2021-12-23

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WO (1) WO2021253539A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024012019A1 (fr) * 2022-07-15 2024-01-18 荣耀终端有限公司 Module de haut-parleur et dispositif électronique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180213319A1 (en) * 2017-01-26 2018-07-26 AAC Technologies Pte. Ltd. Sound Generator
CN207968867U (zh) * 2018-02-02 2018-10-12 瑞声科技(新加坡)有限公司 扬声器箱
CN208572318U (zh) * 2018-05-09 2019-03-01 瑞声精密电子沭阳有限公司 扬声器箱
CN109788375A (zh) * 2018-12-31 2019-05-21 瑞声声学科技(深圳)有限公司 扬声器箱
CN209201329U (zh) * 2018-11-08 2019-08-02 瑞声科技(新加坡)有限公司 扬声器箱

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180213319A1 (en) * 2017-01-26 2018-07-26 AAC Technologies Pte. Ltd. Sound Generator
CN207968867U (zh) * 2018-02-02 2018-10-12 瑞声科技(新加坡)有限公司 扬声器箱
CN208572318U (zh) * 2018-05-09 2019-03-01 瑞声精密电子沭阳有限公司 扬声器箱
CN209201329U (zh) * 2018-11-08 2019-08-02 瑞声科技(新加坡)有限公司 扬声器箱
CN109788375A (zh) * 2018-12-31 2019-05-21 瑞声声学科技(深圳)有限公司 扬声器箱

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024012019A1 (fr) * 2022-07-15 2024-01-18 荣耀终端有限公司 Module de haut-parleur et dispositif électronique

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