WO2022000542A1 - Boîtier de haut-parleur - Google Patents
Boîtier de haut-parleur Download PDFInfo
- Publication number
- WO2022000542A1 WO2022000542A1 PCT/CN2020/101476 CN2020101476W WO2022000542A1 WO 2022000542 A1 WO2022000542 A1 WO 2022000542A1 CN 2020101476 W CN2020101476 W CN 2020101476W WO 2022000542 A1 WO2022000542 A1 WO 2022000542A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- particles
- sound
- rear cavity
- cavity
- expanded
- Prior art date
Links
- 239000002245 particle Substances 0.000 claims abstract description 87
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims abstract description 8
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 claims abstract description 4
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims abstract description 4
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims abstract description 4
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 4
- 229920000642 polymer Polymers 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract 5
- 238000005299 abrasion Methods 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
Definitions
- the invention 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 present invention is to provide a loudspeaker box to solve the technical problem of serious wear of bass particles caused by the violent movement of the bass.
- a loudspeaker enclosure comprising:
- the casing has a receiving space
- a sounding unit is accommodated in the accommodating space, and the sounding unit divides the accommodating space into a front cavity and a rear cavity;
- the rear cavity has a first rear cavity and a second rear cavity, the second rear cavity is filled with sound-absorbing particles and expanded particles mixed between the sound-absorbing particles, the expanded particles can be expanded by heat, and the volume after heating It can be increased to 8-20 times the original volume, and the expanded particles include at least one or more of ethylene vinyl acetate polymer, acrylonitrile, vinylidene chloride, methyl methacrylate, and methyl acrylate.
- the original volume of the expanded particles is the same as the volume of the sound-absorbing particles.
- the quantity ratio of the expanded particles to the sound-absorbing particles is 1:5-1:20.
- the expanded particles are spherical.
- the sound-absorbing particles are spherical.
- the beneficial effect of the present invention 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 acoustic performance of the speaker box.
- the expanding particles can fill the entire virtual acoustic cavity after thermal expansion, so that the sound-absorbing particles cannot move, and further reduce the change of the lowest resonance frequency (F0) caused by the wear of the sound-absorbing particles.
- F0 lowest resonance frequency
- FIG. 1 is a schematic structural diagram of a second rear cavity of a speaker box provided by an embodiment of the present invention
- FIG. 2 is a schematic structural diagram of expanded particles in the second rear cavity of the speaker box provided by an embodiment of the present invention after thermal expansion.
- an embodiment of the present invention provides a speaker box (not shown in the figure), including:
- the casing has a receiving space
- a sounding unit (not shown in the figure) is accommodated in the accommodating space, and the sounding unit divides the accommodating space into a front cavity and a rear cavity;
- the back cavity has a first back cavity and a second back cavity 10.
- the second back cavity 10 is filled with sound-absorbing particles 11 and expanded particles 12 mixed between the sound-absorbing particles 11, and the expanded particles 12 can be absorbed.
- Thermal expansion, and the volume can be increased to 8-20 times the original volume after heating, and the expanded particles 12 at least include at least ethylene vinyl acetate polymer, acrylonitrile, vinylidene chloride, methyl methacrylate, and methyl acrylate. one or more.
- the expansion coefficients of the expanded particles 12 of these materials are suitable, which can better fix the sound-absorbing particles 11 and at the same time have a certain protective effect on the sound-absorbing particles 11 .
- the sound-absorbing particles 11 can absorb the air in the second rear cavity 10 due to their porous structure and high specific capacity, thereby improving the air compliance, thereby reducing the noise of the speaker box 100 .
- the low-frequency resonant frequency is further improved, so that the second rear cavity 10 forms a D-BASS virtual sound cavity to form a bass effect.
- the expanding particles 12 can fill the entire virtual sound cavity after being heated and expanded, and squeeze the sound-absorbing particles 11, so that the sound-absorbing particles 11 cannot move, and further reduce the minimum resonance frequency caused by the wear of the sound-absorbing particles 11 ( Therefore, during the experiment and when the whole machine is working, the performance of the BOX will not be degraded due to the wear and tear of the bass movement, and adding a small amount of expanding particles 12 can fill the remaining volume after the sound-absorbing particles 11.
- the original volume of the expanded particles 12 is the same as the volume of the sound-absorbing particles 11 .
- the quantity ratio of the expanded particles 12 to the sound-absorbing particles 11 is 1:5-1:20.
- the volume of the expanded particles 12 can be increased to 8-20 times the original volume after thermal expansion, and the purpose of fixing the sound-absorbing particles 11 can be achieved by adding a small amount of expanded microspheres to the fixed cavity volume.
- the expanded particles 12 are spherical. In this way, after the expanded particles 12 are heated and expanded, the gap between the expanded particles 12 and the sound-absorbing particles 11 is smaller, so that the sound-absorbing particles 11 are closer together, which is more conducive to preventing the sound-absorbing particles 11 from moving, and is easy to use. processing.
- the sound-absorbing particles 11 are spherical, so that more sound-absorbing particles 11 can be accommodated in the same space, which can better improve the acoustic performance of the speaker box.
Abstract
La présente invention concerne un boîtier de haut-parleur. L'enceinte de haut-parleur comprend un logement et une unité de production de son ; le logement comprend un espace de réception ; l'unité de production de son est reçue dans l'espace de réception et divise 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 ; la seconde cavité arrière est remplie de particules absorbant les sons et de particules expansibles mélangées parmi les particules absorbant les sons, les particules expansibles peuvent être thermo-expansibles, et le volume des particules expansibles chauffées peut être augmenté jusqu'à 8 à 20 fois le volume d'origine ; les particules expansibles constituent un ou plusieurs d'un polymère d'acétate de vinyle d'éthylène, d'acrylonitrile, chlorure de vinylidène, de méthacrylate de méthyle et d'acrylate de méthyle. Selon la présente demande, les particules expansibles sont mélangées parmi les particules absorbant les sons, et la totalité de la cavité acoustique virtuelle peut être remplie avec les particules expansibles après que les particules expansibles soient chauffées et expansées, de sorte que les particules absorbant les sons ne puissent pas se déplacer, et le changement de la fréquence de résonance la plus basse (F0) provoquée par l'abrasion des particules absorbant les sons est en outre réduit, et, par conséquent, la performance du boîtier n'est pas réduite en raison de l'abrasion de mouvement de la basse dans le processus expérimental et lorsque le haut-parleur fonctionne.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010604659.3 | 2020-06-29 | ||
| CN202010604659.3A CN111770399A (zh) | 2020-06-29 | 2020-06-29 | 扬声器箱 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022000542A1 true WO2022000542A1 (fr) | 2022-01-06 |
Family
ID=72722938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2020/101476 WO2022000542A1 (fr) | 2020-06-29 | 2020-07-10 | Boîtier de haut-parleur |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111770399A (fr) |
| WO (1) | WO2022000542A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN217721400U (zh) | 2022-04-29 | 2022-11-01 | 瑞声光电科技(常州)有限公司 | 扬声器 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108059388A (zh) * | 2017-11-29 | 2018-05-22 | 瑞声科技(新加坡)有限公司 | 吸音颗粒及其制作方法、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 |
| CN210579179U (zh) * | 2018-11-08 | 2020-05-19 | 苹果公司 | 音频扬声器、填料和可膨胀材料 |
-
2020
- 2020-06-29 CN CN202010604659.3A patent/CN111770399A/zh active Pending
- 2020-07-10 WO PCT/CN2020/101476 patent/WO2022000542A1/fr active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108059388A (zh) * | 2017-11-29 | 2018-05-22 | 瑞声科技(新加坡)有限公司 | 吸音颗粒及其制作方法、扬声器箱 |
| CN210579179U (zh) * | 2018-11-08 | 2020-05-19 | 苹果公司 | 音频扬声器、填料和可膨胀材料 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111770399A (zh) | 2020-10-13 |
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