CN111770399A - Loudspeaker box - Google Patents
Loudspeaker box Download PDFInfo
- Publication number
- CN111770399A CN111770399A CN202010604659.3A CN202010604659A CN111770399A CN 111770399 A CN111770399 A CN 111770399A CN 202010604659 A CN202010604659 A CN 202010604659A CN 111770399 A CN111770399 A CN 111770399A
- Authority
- CN
- China
- Prior art keywords
- sound
- particles
- rear cavity
- granule
- expansion
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 239000002245 particle Substances 0.000 claims abstract description 61
- 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 abstract description 3
- 239000008187 granular material Substances 0.000 abstract description 27
- 239000000178 monomer Substances 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 6
- QVZZPLDJERFENQ-NKTUOASPSA-N bassianolide Chemical compound CC(C)C[C@@H]1N(C)C(=O)[C@@H](C(C)C)OC(=O)[C@H](CC(C)C)N(C)C(=O)[C@@H](C(C)C)OC(=O)[C@H](CC(C)C)N(C)C(=O)[C@@H](C(C)C)OC(=O)[C@H](CC(C)C)N(C)C(=O)[C@@H](C(C)C)OC1=O QVZZPLDJERFENQ-NKTUOASPSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The invention provides a loudspeaker box, which comprises a shell and a sounding monomer, wherein the shell is provided with an accommodating space; the sound generating single body is accommodated in the accommodating space, and the accommodating space is divided into a front cavity and a rear cavity by the sound generating single body; the rear cavity is provided with a first rear cavity and a second rear cavity, sound-absorbing particles and expansion particles mixed among the sound-absorbing particles are filled in the second rear cavity, the expansion particles can expand under heating, and the volume of the expansion particles can be increased to 8-20 times of the original volume after the expansion particles are heated; the expanded particles are one or more of ethylene vinyl acetate polymer, acrylonitrile, vinylidene chloride, methyl methacrylate and methyl acrylate. This application is inhaling mixed expanded particle between the sound granule, and the expanded particle is heated and can be filled with whole virtual sound chamber after the inflation, makes and inhales the unable motion of sound granule, further reduces because of the change of inhaling the lowest resonant frequency (F0) that sound granule wearing and tearing brought, consequently in the experimentation and the complete machine during operation, the BOX can not bring the performance reduction because of the wear and tear of bass motion.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of acoustoelectrics, in particular to a loudspeaker box.
[ background of the invention ]
In order to improve the low-frequency acoustic performance of the loudspeaker box, sound-absorbing particles are usually filled in an auxiliary sound-generating cavity of the loudspeaker box to form a D-BASS virtual sound cavity, and researches show that through a long-term power experiment (more than 48H), the sound-absorbing particles (BASS) are seriously worn due to violent movement of the sound-absorbing particles (BASS), so that the lowest resonance frequency (F0) is greatly changed, the capacity expansion effect is lost, and the performance is reduced.
Therefore, there is a need to provide a loudspeaker enclosure that slows down the movement of sound absorbing particles (bass) to reduce wear of the bass particles.
[ summary of the invention ]
The invention aims to provide a loudspeaker box to solve the technical problem that serious abrasion of the band particles is caused by severe band motion.
The technical scheme provided by one of the purposes of the invention is as follows:
a loudspeaker enclosure comprising:
a housing having an accommodating space;
the sound generating unit is accommodated in the accommodating space and divides the accommodating space into a front cavity and a rear cavity;
the back chamber has first back chamber and second back chamber, the second back intracavity fill be filled with inhale the sound granule and mix in inhale the expansion granule between the sound granule, the expansion granule can be heated the inflation, and heated back volume can increase to 8-20 times of original volume, the expansion granule includes at least one or several kinds in ethylene vinyl acetate polymer, acrylonitrile, vinylidene chloride, methyl methacrylate, the methyl acrylate.
Further, the original volume of the expanded particles is the same as the volume of the sound-absorbing particles.
Further, the number ratio of the expanded particles to the sound-absorbing particles is 1:5 to 1: 20.
Further, the expanded particles are spherical.
Further, the sound-absorbing particles are spherical.
The invention has the beneficial effects that: the second rear cavity is filled with sound absorption particles to form a D-BASS virtual sound cavity, so that the acoustic performance of the loudspeaker box is improved. Through mixing the expanded particle between inhaling the sound granule, the expanded particle can be sufficient whole virtual sound chamber after the thermal expansion, makes and inhales the unable motion of sound granule, further reduces because of inhaling the change of the minimum resonant frequency (F0) that the wearing and tearing of sound granule brought, therefore in the experimentation and the complete machine during operation, the BOX can not bring the performance reduction because of the wear and tear of bass motion.
[ description of the drawings ]
Fig. 1 is a schematic structural diagram of a second rear cavity of a loudspeaker enclosure according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of the loudspeaker box according to the embodiment of the present invention, in which the expanded particles in the second rear cavity are expanded by heat.
In the figure:
10. a second rear cavity; 11. sound-absorbing particles; 12. expanding the particles.
[ detailed description ] embodiments
The present invention will be described in detail with reference to fig. 1 to 2.
Referring to fig. 1 and 2, an embodiment of the present invention provides a speaker box (not shown), including:
a housing (not shown) having an accommodating space;
a sound generating unit (not shown in the figure) accommodated in the accommodating space, wherein the sound generating unit divides the accommodating space into a front cavity and a rear cavity;
the rear cavity is provided with a first rear cavity and a second rear cavity 10, sound absorbing particles 11 and expansion particles 12 mixed among the sound absorbing particles 11 are filled in the second rear cavity 10, the expansion particles 12 can be heated to expand, the volume can be increased to 8-20 times of the original volume after being heated, and the expansion particles 12 at least comprise at least one or more of ethylene vinyl acetate polymer, acrylonitrile, vinylidene chloride, methyl methacrylate and methyl acrylate. The expansion particles 12 of the materials have proper expansion coefficients, so that the sound-absorbing particles 11 can be well fixed, and meanwhile, the sound-absorbing particles 11 can be protected to a certain extent.
Through the sound granule 11 of inhaling of intussuseption in second rear chamber 10, because inhale sound granule 11 and have porous structure and high specific capacity, the air in the adsorbable second rear chamber 10 promotes the air compliance to reach the low frequency resonant frequency who reduces speaker box 100, and then improve the low frequency performance, make second rear chamber 10 form the virtual sound cavity of D-BASS, form the BASS effect. Through mixing expanded granule 12 among sound absorption granule 11, expanded granule 12 can be full of whole virtual sound cavity after the heating expansion, extrudees sound absorption granule 11, makes sound absorption granule 11 unable motion, further reduces the change that the minimum resonant frequency (F0) brought because of sound absorption granule 11 wearing and tearing, therefore in the experimentation with the complete machine during operation, the BOX can not bring the performance reduction because of the loss of band motion, and add remaining volume behind the sound absorption granule 11 just can be filled to a small amount of expanded granule 12.
The expanded particles 12 preferably have the same original volume as the sound-absorbing particles 11.
It is preferable that the number ratio of the expanded particles 12 to the sound-absorbing particles 11 is 1:5 to 1: 20. Rationally confirm expanded particle 12 and inhale the quantity ratio of sound granule 11, avoid because the quantity of expanded particle 12 sets up too much, occupied the space of inhaling sound granule 11, influence the acoustic performance of speaker box, also avoid because the quantity of expanded particle 12 sets up too little, can not reach the effect that the sound granule 11 motion was inhaled in the prevention. And as mentioned above, the volume of the expanded particles 12 can be increased to 8-20 times of the original volume after being heated and expanded, and the purpose of fixing the sound-absorbing particles 11 can be realized by adding a small amount of expanded microspheres in the fixed cavity volume.
Preferably, expanded particle 12 is spherical, so, expanded particle 12 is heated the inflation back, and the clearance between the granule 11 that absorbs the sound is littleer, makes to absorb between the granule 11 more closely, more is favorable to making to absorb the unable motion of granule 11, and easily processing.
Preferably, the sound-absorbing particles 11 are spherical, so that more sound-absorbing particles 11 can be accommodated in the same space, and the acoustic performance of the loudspeaker enclosure can be improved.
The above description is only an embodiment of the present invention, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept of the present invention, but these are all within the scope of the present invention.
Claims (5)
1. A loudspeaker enclosure, comprising:
a housing having an accommodating space;
the sound generating unit is accommodated in the accommodating space and divides the accommodating space into a front cavity and a rear cavity;
the rear cavity is provided with a first rear cavity and a second rear cavity, sound-absorbing particles and expansion particles mixed among the sound-absorbing particles are filled in the second rear cavity, the expansion particles can expand under heating, and the volume of the expansion particles can be increased to 8-20 times of the original volume after the expansion particles are heated; the expanded particles are one or more of ethylene vinyl acetate polymer, acrylonitrile, vinylidene chloride, methyl methacrylate and methyl acrylate.
2. A loudspeaker enclosure as claimed in claim 1, wherein: the expanded particles have the same original volume as the sound-absorbing particles.
3. A loudspeaker enclosure as claimed in claim 1, wherein: the number ratio of the expanded particles to the sound-absorbing particles is 1:5 to 1: 20.
4. A loudspeaker enclosure as claimed in claim 1, wherein: the expanded particles are spherical.
5. A loudspeaker enclosure as claimed in claim 1, wherein: the sound-absorbing particles are spherical.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010604659.3A CN111770399A (en) | 2020-06-29 | 2020-06-29 | Loudspeaker box |
| PCT/CN2020/101476 WO2022000542A1 (en) | 2020-06-29 | 2020-07-10 | Loudspeaker box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010604659.3A CN111770399A (en) | 2020-06-29 | 2020-06-29 | Loudspeaker box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111770399A true CN111770399A (en) | 2020-10-13 |
Family
ID=72722938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010604659.3A Pending CN111770399A (en) | 2020-06-29 | 2020-06-29 | Loudspeaker box |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111770399A (en) |
| WO (1) | WO2022000542A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114885269A (en) * | 2021-08-19 | 2022-08-09 | 镇江贝斯特新材料有限公司 | Expandable acoustic reinforcement part and manufacturing method and application thereof |
| JP7367170B1 (en) | 2022-04-29 | 2023-10-23 | エーエーシー マイクロテック（チャンヂョウ）カンパニー リミテッド | speaker |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118102194A (en) * | 2024-04-25 | 2024-05-28 | 歌尔股份有限公司 | Sound absorption block, preparation method thereof, sounding module and electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111147967A (en) * | 2020-02-20 | 2020-05-12 | 精拓丽音科技（北京）有限公司 | Loudspeaker module and preparation method thereof |
| CN210579179U (en) * | 2018-11-08 | 2020-05-19 | 苹果公司 | Audio speaker, filler and expandable material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108059388A (en) * | 2017-11-29 | 2018-05-22 | 瑞声科技(新加坡)有限公司 | Sound-absorbing particle and preparation method thereof, loudspeaker enclosure |
-
2020
- 2020-06-29 CN CN202010604659.3A patent/CN111770399A/en active Pending
- 2020-07-10 WO PCT/CN2020/101476 patent/WO2022000542A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210579179U (en) * | 2018-11-08 | 2020-05-19 | 苹果公司 | Audio speaker, filler and expandable material |
| CN111147967A (en) * | 2020-02-20 | 2020-05-12 | 精拓丽音科技（北京）有限公司 | Loudspeaker module and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114885269A (en) * | 2021-08-19 | 2022-08-09 | 镇江贝斯特新材料有限公司 | Expandable acoustic reinforcement part and manufacturing method and application thereof |
| JP7367170B1 (en) | 2022-04-29 | 2023-10-23 | エーエーシー マイクロテック（チャンヂョウ）カンパニー リミテッド | speaker |
| WO2023206714A1 (en) * | 2022-04-29 | 2023-11-02 | 瑞声声学科技(深圳)有限公司 | Loudspeaker |
| JP2023164264A (en) * | 2022-04-29 | 2023-11-10 | エーエーシー マイクロテック（チャンヂョウ）カンパニー リミテッド | speaker |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022000542A1 (en) | 2022-01-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111770399A (en) | Loudspeaker box | |
| WO2022007336A1 (en) | Acoustic conditioning material, sound production apparatus, filling method, and electronic device | |
| CN210579179U (en) | Audio speaker, filler and expandable material | |
| WO2016165354A1 (en) | Sound absorption component and loudspeaker module having sound absorption component | |
| WO2022007335A1 (en) | Acoustic adjusting material, sound production apparatus, and electronic device | |
| WO2022007333A1 (en) | Acoustic adjustment material, filling method, sound generating apparatus, and electronic device | |
| WO2022007334A1 (en) | Acoustic adjusting material for sound production apparatus, sound production apparatus, filling method and electronic device | |
| WO2022007332A1 (en) | Acoustic adjusting material, filling method, sound generating device and electronic device | |
| WO2022007331A1 (en) | Acoustic adjusting material, filling method, sound production apparatus, and electronic device | |
| CN205232448U (en) | Loudspeaker module group | |
| CN106792389B (en) | Sound absorbing piece of sound generating device, preparation method of sound absorbing piece and sound generating device module | |
| CN108551635B (en) | Micro speaker module | |
| CN111954128B (en) | Loudspeaker module and electronic equipment | |
| WO2018040392A1 (en) | Loudspeaker module | |
| CN109660924A (en) | Active carbon sound-absorbing particle and sounding device | |
| CN109874089B (en) | Silica aerogel sound absorbing material and sound generating device | |
| CN113691910A (en) | Speaker, preparation method of gel layer and electronic equipment | |
| CN109640237A (en) | A kind of active carbon sound-absorbing material and sounding device | |
| CN107046665A (en) | Composite ceramics sound-absorbing part and sound-producing device module | |
| CN115093159B (en) | Sound-absorbing material block, preparation method thereof and related equipment | |
| CN207039886U (en) | A kind of sound-absorbing material of loudspeaker module | |
| CN206413183U (en) | The sound-absorbing part and sound-producing device module of sound-producing device | |
| CN107454520A (en) | The sound-absorbing material of loudspeaker module | |
| CN219919094U (en) | Sound body, sound equipment and sound system | |
| CN109678392B (en) | Silica aerogel sound absorbing material and sound generating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201013 |