WO2022000557A1 - Boîtier de haut-parleur - Google Patents

Boîtier de haut-parleur Download PDF

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Publication number
WO2022000557A1
WO2022000557A1 PCT/CN2020/101508 CN2020101508W WO2022000557A1 WO 2022000557 A1 WO2022000557 A1 WO 2022000557A1 CN 2020101508 W CN2020101508 W CN 2020101508W WO 2022000557 A1 WO2022000557 A1 WO 2022000557A1
Authority
WO
WIPO (PCT)
Prior art keywords
upper cover
rear cavity
cover part
speaker box
sound
Prior art date
Application number
PCT/CN2020/101508
Other languages
English (en)
Chinese (zh)
Inventor
李红
刘海林
王武
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 WO2022000557A1 publication Critical patent/WO2022000557A1/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
    • 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

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 includes an upper cover, a lower cover that is covered and fixed on the upper cover and forms an accommodation space together, a sound-emitting unit accommodated in the accommodation space, and a fixed On the ventilating spacer of the upper cover, the sounding unit divides the receiving space into a front cavity and a back cavity; the back cavity includes a first back cavity and a second back cavity that are air-connected through the ventilating spacer The second rear cavity is enclosed by the upper cover and the air-permeable spacer, the second rear cavity is filled with sound-absorbing particles, and the side of the upper cover facing the second rear cavity is provided with a Protrusions that block the movement of the sound-absorbing particles.
  • At least two protrusions are provided, and the at least two protrusions are distributed at intervals along the length direction of the second rear cavity.
  • the protrusion extends along the width direction of the second rear cavity.
  • the upper cover includes a first upper cover part, a second upper cover part and a third upper cover part, the sounding unit is arranged between the first upper cover part and the lower cover, the The second upper cover is located between the third upper cover and the lower cover, and the air-permeable spacer is fixed to the second upper cover; the first upper cover and the sound generator surround
  • the front cavity is formed by combining the sounding unit, the lower cover, the first upper cover part, the second upper cover part and the air-permeable spacer to form the first rear cavity.
  • the second upper cover part, the third upper cover part and the air-permeable spacer are enclosed to form the second rear cavity.
  • the bulge is arranged on the side of the third upper cover part facing the second rear cavity, and between the bulge, the second upper cover part and the air-permeable spacer gap.
  • the second upper cover portion is provided with a surrounding wall extending toward the lower cover and spaced from the lower cover, and the air-permeable spacer is fixed to the surrounding wall.
  • first upper cover portion and the second upper cover portion are integrally formed.
  • the speaker box further includes a powder filling hole provided through the third upper cover, 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 long, by arranging a protrusion on the casing towards the second rear cavity, the protrusion blocks the movement of the bass, thereby reducing the wear of the sound-absorbing particles and further reducing the wear and tear of the sound-absorbing particles.
  • the change of the lowest resonant frequency (F0) therefore, effectively improves the acoustic performance of the speaker cabinet with a longer virtual cavity length.
  • 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 provided by an embodiment of the present invention without a third upper cover;
  • FIG. 5 is a schematic structural diagram of the third upper cover part and the protrusion matching with each other according to the embodiment of the present invention.
  • an embodiment of the present invention provides a speaker box 100 , which includes an upper cover 21 , a lower cover 22 , which is fixed on the upper cover 21 and forms an accommodation space (not shown in the figure), and a lower cover 22 , which is covered and fixed to the upper cover 21 .
  • the sound enters the second rear cavity 122 from the first rear cavity 121, and increases its transmission path through the sound-absorbing particles located in the second rear cavity 122, which can be used to improve the audio performance of the speaker box 100, especially the low-frequency acoustic performance.
  • the sound-absorbing particles may be zeolite particles or dust.
  • the ventilating spacer 4 divides the rear cavity 12 into a first rear cavity 121 and a second rear cavity 122. Only air can circulate between the first rear cavity 121 and the second rear cavity 122, and other substances cannot enter each other, such as sound-absorbing particles. .
  • the air in the second rear cavity 122 can be absorbed and the air compliance can be improved, thereby reducing the low-frequency resonance frequency of the speaker box 100 .
  • the low-frequency performance is improved, so as to improve the low-frequency acoustic performance, so that the second rear cavity 122 forms a D-BASS virtual sound cavity, so as to improve the low-frequency acoustic performance of the speaker box 100 .
  • the protrusion 5 is provided on the housing 2 toward the second rear cavity 122, and the protrusion 5 blocks the movement of the bass, thereby reducing the wear of the sound-absorbing particles and further reducing the
  • the change of the lowest resonant frequency (F0) caused by the abrasion of the sound-absorbing particles effectively improves the acoustic performance of the speaker box 100 with a longer virtual sound cavity.
  • At least two protrusions 5 are provided, and the at least two protrusions 5 are distributed at intervals along the length direction of the second rear cavity 122 .
  • a plurality of protrusions 5 may be arranged to block the movement of the bass.
  • the distance between adjacent protrusions 5 is preferably 5-10 mm.
  • the plurality of protrusions 5 are sequentially a first protrusion, a second protrusion, ..., an Nth protrusion, wherein the first protrusion and the Nth protrusion are along the second rear cavity
  • the distance in the longitudinal direction of 122 from the casing 2 is preferably 5-10 mm. It can be understood that it is also possible to provide one protrusion 5 .
  • a protrusion 5 may be provided along the length direction 1/2 of the second rear cavity 122 .
  • one protrusion 5 may be provided at 1/3 and 2/3 of the length of the second rear cavity 122 respectively.
  • two protrusions 5 are arranged in the second rear cavity 122 at intervals.
  • the protrusion 5 extends along the width direction of the second rear cavity 122 .
  • the blocking effect of the bass movement is improved.
  • two stepped protrusions 5 are arranged in the second rear cavity 122 , which reduces the wear on the sound-absorbing particles, and further reduces the variation of the lowest resonance frequency (F0) by 10-30 Hz.
  • the upper cover 21 includes a first upper cover part 211 , a second upper cover part 212 and a third upper cover part 213 , and the sounding unit 3 is disposed between the first upper cover part 211 and the lower cover 22 .
  • the second upper cover part 212 is located between the third upper cover part 213 and the lower cover 22 , and the ventilation spacer 4 is fixed to the second upper cover part 212 .
  • the first upper cover part 211 and the sounding unit 3 are enclosed to form the front cavity 11
  • the sounding unit 3 , the lower cover 22 , the first upper cover part 211 , the second upper cover part 212 and the ventilation spacer 4 are enclosed to form the first upper cover part 211 .
  • the rear cavity 121 , the second upper cover part 212 , the third upper cover part 213 and the ventilation spacer 4 are enclosed to form the second rear cavity 122 .
  • the protrusion 5 is provided on the side of the third upper cover portion 213 facing the second rear cavity 122 , and a gap is provided between the protrusion 5 and the second upper cover portion 212 and the ventilation spacer 4 (not shown in the figure). out).
  • the second upper cover portion 212 is provided with a surrounding wall 2121 extending toward the lower cover 22 and spaced from the lower cover 22 , and the air-permeable spacer 4 is fixed to the surrounding wall 2121 .
  • the air-permeable spacer 4 forms a fixed seal with the surrounding wall 2121 by means of heat fusion.
  • the breathable spacer 4 is a mesh cloth, of course, it is not limited to this, as long as the sound-absorbing particles can be isolated from entering the first rear cavity 121 and can be breathed and sounded.
  • the first upper cover portion 211 and the second upper cover portion 212 are integrally formed.
  • the speaker box 100 further includes a powder filling hole 214 provided through the third upper cover 213 , and the powder filling hole 214 communicates with the second rear cavity 122 .
  • the sound-absorbing particles are poured into the second rear cavity 122 through the powder filling hole 214 , so that the second rear cavity 122 forms a D-BASS virtual sound cavity.

Abstract

L'invention concerne un boîtier de haut-parleur, comprenant : un couvercle supérieur, un couvercle inférieur qui est fixé de manière couvrante au couvercle supérieur et qui forme conjointement un espace de réception, une unité d'émission de son reçue dans l'espace de réception, et un séparateur perméable à l'air fixé au couvercle supérieur. L'unité d'émission de sons sépare l'espace de réception 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 d'air au moyen du séparateur perméable à l'air. Le couvercle supérieur et le séparateur perméable à l'air se referment pour former la seconde cavité arrière. La seconde cavité arrière est remplie de particules absorbant le son, et le côté du couvercle supérieur faisant face à la seconde cavité arrière est pourvu d'une saillie capable de bloquer le mouvement des particules absorbant le son. En bloquant le mouvement des basses à l'aide de la protubérance, l'usure des particules absorbant le son est réduite ; en outre, les changements de la fréquence de résonance la plus basse (F0) causés par l'usure des particules absorbant le son sont réduits. Par conséquent, les performances acoustiques d'un boîtier de haut-parleur ayant une cavité sonore virtuelle relativement longue sont améliorées de manière efficace.
PCT/CN2020/101508 2020-06-29 2020-07-10 Boîtier de haut-parleur WO2022000557A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202021233837.8U CN212519305U (zh) 2020-06-29 2020-06-29 扬声器箱
CN202021233837.8 2020-06-29

Publications (1)

Publication Number Publication Date
WO2022000557A1 true WO2022000557A1 (fr) 2022-01-06

Family

ID=74433850

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/101508 WO2022000557A1 (fr) 2020-06-29 2020-07-10 Boîtier de haut-parleur

Country Status (2)

Country Link
CN (1) CN212519305U (fr)
WO (1) WO2022000557A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206433156U (zh) * 2017-01-12 2017-08-22 瑞声科技(新加坡)有限公司 扬声器箱
CN206433106U (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
US20180255393A1 (en) * 2017-03-01 2018-09-06 Aac Technologies Pte, Ltd. Speaker Box
WO2019071402A1 (fr) * 2017-10-09 2019-04-18 深圳传音通讯有限公司 Haut-parleur et terminal mobile
CN210075490U (zh) * 2019-07-25 2020-02-14 深圳市信维声学科技有限公司 一种新型扬声器
CN210093436U (zh) * 2019-06-30 2020-02-18 瑞声科技(新加坡)有限公司 扬声器箱
CN111147967A (zh) * 2020-02-20 2020-05-12 精拓丽音科技（北京）有限公司 一种扬声器模组及扬声器模组的制备方法
CN111179897A (zh) * 2020-01-02 2020-05-19 歌尔股份有限公司 一种活性炭吸音材料、发声装置以及电子设备

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206433156U (zh) * 2017-01-12 2017-08-22 瑞声科技(新加坡)有限公司 扬声器箱
CN206433106U (zh) * 2017-01-12 2017-08-22 瑞声科技(新加坡)有限公司 扬声器箱
US20180255393A1 (en) * 2017-03-01 2018-09-06 Aac Technologies Pte, Ltd. Speaker Box
CN107147979A (zh) * 2017-06-02 2017-09-08 歌尔股份有限公司 扬声器模组
WO2019071402A1 (fr) * 2017-10-09 2019-04-18 深圳传音通讯有限公司 Haut-parleur et terminal mobile
CN210093436U (zh) * 2019-06-30 2020-02-18 瑞声科技(新加坡)有限公司 扬声器箱
CN210075490U (zh) * 2019-07-25 2020-02-14 深圳市信维声学科技有限公司 一种新型扬声器
CN111179897A (zh) * 2020-01-02 2020-05-19 歌尔股份有限公司 一种活性炭吸音材料、发声装置以及电子设备
CN111147967A (zh) * 2020-02-20 2020-05-12 精拓丽音科技（北京）有限公司 一种扬声器模组及扬声器模组的制备方法

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