WO2022000543A1 - Caisson de haut-parleur - Google Patents

Caisson de haut-parleur Download PDF

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Publication number
WO2022000543A1
WO2022000543A1 PCT/CN2020/101478 CN2020101478W WO2022000543A1 WO 2022000543 A1 WO2022000543 A1 WO 2022000543A1 CN 2020101478 W CN2020101478 W CN 2020101478W WO 2022000543 A1 WO2022000543 A1 WO 2022000543A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
rear cavity
air
cavity
speaker box
Prior art date
Application number
PCT/CN2020/101478
Other languages
English (en)
Chinese (zh)
Inventor
李红
田建东
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 WO2022000543A1 publication Critical patent/WO2022000543A1/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
    • 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
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • 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 utility model relates to the field of sound and electricity, in particular to a speaker box.
  • sound-absorbing particles are usually filled in the auxiliary sound cavity of the speaker box to form a D-BASS virtual sound cavity.
  • the purpose of the utility model is to provide a loudspeaker box to solve the technical problem of serious abrasion of bass particles caused by the violent movement of the bass.
  • a speaker box comprising a shell with a receiving space, a sound-emitting unit and a ventilating spacer accommodated in the receiving space, and the sound-emitting unit connects the
  • the accommodating space is divided into a front cavity and a rear cavity;
  • the rear cavity includes a first rear cavity and a second rear cavity that are air-connected through the air-permeable spacer, the sound-producing unit, the housing and the air-permeable spacer
  • the first rear cavity is formed by enclosing the housing and the air-permeable spacer to form the second rear cavity; wherein, the second rear cavity is filled with sound-absorbing particles, and the first rear cavity is There is a sound-absorbing part inside to block the airflow.
  • the sound-absorbing member is sound-absorbing cotton.
  • the sound-absorbing cotton is fixed to the air-permeable spacer and extends from the air-permeable spacer toward the first rear cavity.
  • the length direction of the air-permeable spacer is the same as the length direction of the second rear cavity, and at least two sound-absorbing cottons are provided, and at least two of the sound-absorbing cottons are along the length of the second rear cavity. Orientation interval distribution.
  • the sound-absorbing cotton extends along the width direction of the air-permeable spacer.
  • the housing includes an upper cover, a lower cover fixed on the upper cover, and a back plate fixed on the side of the upper cover away from the lower cover, and the ventilation spacer is fixed on the upper cover
  • the cover is located between the lower cover and the back plate; the upper cover and the sounding unit are enclosed to form the front cavity, the sounding unit, the lower cover, the upper cover and the
  • the first rear cavity is enclosed by the air-permeable spacer
  • the second rear cavity is enclosed by the upper cover, the air-permeable spacer and the back plate; the sound-absorbing cotton is far away from the air-permeable spacer.
  • the side abuts against the lower cover.
  • the upper cover is provided with a surrounding wall extending in the direction of the lower cover and spaced from the lower cover, and the air-permeable spacer is fixed to the surrounding wall.
  • the speaker box further includes a powder filling hole provided through the back plate, and the powder filling hole communicates with the second rear cavity.
  • the beneficial effect of the utility model is that: by filling the second rear cavity with sound-absorbing particles, the second rear cavity forms a D-BASS virtual sound cavity, so as to improve the low-frequency acoustic performance of the speaker box.
  • the length of the second rear cavity is relatively large, by arranging the sound-absorbing cotton in the first rear cavity, the sound-absorbing cotton blocks the airflow entering the second rear cavity from the first rear cavity, thereby slowing down the movement of the sound-absorbing particles.
  • FIG. 1 is a schematic structural diagram of a speaker box provided by an embodiment of the present invention.
  • FIG. 2 is an exploded view of a speaker box provided by an embodiment of the present utility model
  • Fig. 3 is a sectional view along line A-A in Fig. 1;
  • FIG. 4 is a schematic structural diagram of a speaker box with a lower cover removed according to an embodiment of the present invention.
  • speaker box 1, shell; 11, upper cover; 111, wall; 12, lower cover; 13, back plate; 131, powder filling hole; 2, accommodation space; 21, front cavity; 22 , back cavity; 221, the first back cavity; 222, the second back cavity; 3, the sounding unit; 4, the breathable spacer; 5, the sound-absorbing cotton.
  • an embodiment of the present invention provides a speaker box 100 , which includes a housing 1 having an accommodation space 2 , a sound-generating unit 3 and a ventilating spacer 4 accommodated in the accommodation space 2 .
  • the receiving space 2 is divided into a front cavity 21 and a rear cavity 22; the rear cavity 22 includes a first rear cavity 221 and a second rear cavity 222 air-connected through the air-permeable spacer 4, the sound-producing unit 3, the housing 1 and the air-permeable insulation
  • the first rear cavity 221 is formed by the enclosure 4, and the second rear cavity 222 is formed by the enclosure 1 and the ventilating spacer 4; wherein, the second rear cavity 222 is filled with sound-absorbing particles (not shown in the figure),
  • the cavity 221 is provided with a sound absorbing member for blocking airflow.
  • the sound-absorbing member is sound-absorbing cotton 5 .
  • the housing 1 includes an upper cover 11 , a lower cover 12 covered and fixed on the upper cover 11 , and a back plate 13 fixed on the side of the upper cover 11 away from the lower cover 12 . between the lower cover 12 and the back plate 13 .
  • the sound-generating unit 3 is provided with a diaphragm (not shown in the figure), and the upper cover 11 and the side of the sound-generating unit 3 with the diaphragm are enclosed to form a front cavity 21 for sounding.
  • the sounding unit 3, the lower cover 12, the upper cover 11 and the air-permeable spacer 4 are enclosed to form a first rear cavity 221, and the upper cover 11, the air-permeable spacer 4 and the back panel 13 are enclosed to form a second rear cavity 222, and the air-permeable spacer 4 and the upper cover 11 divide the rear cavity 22 into a first rear cavity 221 and a second rear cavity 222 .
  • the sound-absorbing particles may be zeolite particles or dust.
  • the ventilating spacer 4 communicates with the first rear cavity 221 and the second rear cavity 222, so that air can be circulated between the first rear cavity 221 and the second rear cavity 222, and the sound-absorbing particles are isolated from the second rear cavity 222 into the first rear cavity.
  • the cavity 221 and the air-permeable spacer 4 can be made of mesh, of course, it is not limited to this, as long as the sound-absorbing particles can be isolated from entering the first rear cavity 221 and can be breathable and sound-permeable.
  • the air communication mentioned in the present invention means that only air can circulate between the second rear cavity 222 and the first rear cavity 221, and other substances cannot enter each other, such as sound-absorbing particles.
  • the air in the second rear cavity 222 can be absorbed and the air compliance can be improved, thereby reducing the low frequency resonance frequency of the speaker box 100 . Further, the low frequency performance is improved, so as to improve the low frequency acoustic performance, so that the second rear cavity 222 forms a D-BASS virtual sound cavity, so as to improve the low frequency acoustic performance of the speaker box 100 .
  • the sound absorbing cotton 5 is arranged in the first rear cavity 221 to block the airflow entering the second rear cavity 222 from the first rear cavity 221 , thereby reducing the speed of the air flow.
  • the motion of the sound-absorbing particles reduces the wear caused by the vigorous movement of the sound-absorbing particles, thereby reducing the change of the lowest resonant frequency (F0) caused by the wear of the sound-absorbing particles. acoustic performance. It can be understood that other substances can also be used to replace the sound-absorbing cotton 5, as long as it can block the airflow.
  • the sound-absorbing cotton 5 is fixed to the air-permeable spacer 4 and extends toward the first rear cavity 221 from the air-permeable spacer 4 .
  • the airflow entering the second rear cavity 222 from the first rear cavity 221 must pass through the breathable spacer 4 .
  • the length direction of the air-permeable spacer 4 is the same as the length direction of the second rear cavity 222, and at least two sound-absorbing cottons 5 are provided, and the at least two sound-absorbing cottons 5 are distributed at intervals along the length direction of the second rear cavity 222 (Fig. 1 and the X-axis in FIG. 4 is the length direction of the second rear cavity 222).
  • a plurality of sound-absorbing cottons 5 may be arranged to block the airflow.
  • the distance between adjacent sound-absorbing cottons 5 is preferably 5-10 mm.
  • the plurality of sound-absorbing cottons 5 are sequentially the first sound-absorbing cotton, the second sound-absorbing cotton, ..., the Nth sound-absorbing cotton, wherein the first sound-absorbing cotton and the Nth sound-absorbing cotton are along the second back cavity.
  • the distance between the length direction of 222 and the casing 1 forming the second rear cavity 222 is preferably 5-10 mm.
  • a sound-absorbing cotton 5 may be disposed along the length direction 1/2 of the second rear cavity 222 .
  • a sound-absorbing cotton 5 may be provided at 1/3 and 2/3 of the length of the second rear cavity 222 respectively.
  • a sound-absorbing cotton 5 is arranged in the first rear cavity 221 .
  • the sound-absorbing cotton 5 extends along the width direction of the air-permeable spacer 4 , and the side of the sound-absorbing cotton 5 away from the air-permeable spacer 4 abuts against the casing 1 . With this arrangement, the blocking effect of the sound-absorbing cotton 5 on the airflow is improved.
  • a sound-absorbing cotton 5 extending along the width direction of the air-permeable spacer 4 is disposed in the first rear cavity 221 , and the side of the sound-absorbing cotton 5 away from the air-permeable spacer 4 abuts against the lower cover 12 , thereby blocking the
  • the airflow entering the second rear cavity 222 from the first rear cavity 221 slows down the movement of the sound-absorbing particles in the second rear cavity 222, thereby reducing the wear on the sound-absorbing particles, and further reducing the variation of the lowest resonant frequency (F0) by 10- 30Hz.
  • the upper cover 11 is provided with a surrounding wall 111 extending in the direction of the lower cover 12 and spaced from the lower cover 12 , and the ventilation spacer 4 is fixed to the surrounding wall 111 .
  • the space of the second rear cavity 222 is increased, the volume of the virtual sound cavity is effectively increased, and the acoustic performance of the speaker box 100 is further improved.
  • the air-permeable spacer 4 forms a fixed seal with the surrounding wall 111 by means of heat fusion.
  • the speaker box 100 further includes a powder filling hole 131 disposed through the back plate 13 , and the powder filling hole 131 communicates with the second rear cavity 222 .
  • the sound-absorbing particles are poured into the second rear cavity 222 through the powder filling hole 131 , so that the second rear cavity 222 forms a D-BASS virtual sound cavity.

Abstract

L'invention concerne un caisson de haut-parleur, comprenant un boîtier ayant un espace de logement, et une unité de production de son et un séparateur perméable à l'air, qui sont logés dans l'espace de logement. L'unité de production de son divisel'espace de logement en une cavité avant et une cavité arrière ; la cavité arrière comprend une première cavité arrière et une seconde cavité arrière qui sont en communication aérienne au moyen du séparateur perméable à l'air ; l'unité de production de son, le boîtier et le séparateur perméable à l'air se referment pour former la première cavité arrière, et le boîtier et le séparateur perméable à l'air se referment pour former la seconde cavité arrière ; la seconde cavité arrière est remplie de particules d'absorption de son ; et la première cavité arrière est pourvue intérieurement d'un élément d'absorption de son utilisé pour bloquer le flux d'air. Le caisson de haut-parleur fourni dans le présent modèle d'utilité améliore efficacement la performance acoustique d'un caisson de haut-parleur ayant une cavité sonore virtuelle de grande longueur.
PCT/CN2020/101478 2020-06-29 2020-07-10 Caisson de haut-parleur WO2022000543A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202021233682.8 2020-06-29
CN202021233682.8U CN212628263U (zh) 2020-06-29 2020-06-29 扬声器箱

Publications (1)

Publication Number Publication Date
WO2022000543A1 true WO2022000543A1 (fr) 2022-01-06

Family

ID=74744279

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/101478 WO2022000543A1 (fr) 2020-06-29 2020-07-10 Caisson de haut-parleur

Country Status (2)

Country Link
CN (1) CN212628263U (fr)
WO (1) WO2022000543A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204498347U (zh) * 2015-04-13 2015-07-22 歌尔声学股份有限公司 扬声器模组
CN204859544U (zh) * 2015-07-03 2015-12-09 歌尔声学股份有限公司 扬声器模组
CN107071668A (zh) * 2017-05-24 2017-08-18 歌尔股份有限公司 扬声器模组及电子设备
CN206433156U (zh) * 2017-01-12 2017-08-22 瑞声科技(新加坡)有限公司 扬声器箱
CN107147979A (zh) * 2017-06-02 2017-09-08 歌尔股份有限公司 扬声器模组
CN107241669A (zh) * 2017-06-28 2017-10-10 歌尔股份有限公司 一种扬声器模组
CN108124225A (zh) * 2018-02-26 2018-06-05 歌尔股份有限公司 一种扬声器模组以及电子设备
CN208821049U (zh) * 2018-10-11 2019-05-03 歌尔科技有限公司 一种发声装置模组和发声设备

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204498347U (zh) * 2015-04-13 2015-07-22 歌尔声学股份有限公司 扬声器模组
CN204859544U (zh) * 2015-07-03 2015-12-09 歌尔声学股份有限公司 扬声器模组
CN206433156U (zh) * 2017-01-12 2017-08-22 瑞声科技(新加坡)有限公司 扬声器箱
CN107071668A (zh) * 2017-05-24 2017-08-18 歌尔股份有限公司 扬声器模组及电子设备
CN107147979A (zh) * 2017-06-02 2017-09-08 歌尔股份有限公司 扬声器模组
CN107241669A (zh) * 2017-06-28 2017-10-10 歌尔股份有限公司 一种扬声器模组
CN108124225A (zh) * 2018-02-26 2018-06-05 歌尔股份有限公司 一种扬声器模组以及电子设备
CN208821049U (zh) * 2018-10-11 2019-05-03 歌尔科技有限公司 一种发声装置模组和发声设备

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