CN212519305U - Loudspeaker box - Google Patents
Loudspeaker box Download PDFInfo
- Publication number
- CN212519305U CN212519305U CN202021233837.8U CN202021233837U CN212519305U CN 212519305 U CN212519305 U CN 212519305U CN 202021233837 U CN202021233837 U CN 202021233837U CN 212519305 U CN212519305 U CN 212519305U
- Authority
- CN
- China
- Prior art keywords
- upper cover
- sound
- cavity
- back chamber
- cover portion
- 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.)
- Expired - Fee Related
Links
- 230000033001 locomotion Effects 0.000 claims abstract description 12
- 239000008187 granular material Substances 0.000 claims abstract description 9
- 239000000178 monomer Substances 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims abstract description 3
- 238000005192 partition Methods 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 abstract description 18
- 238000010521 absorption reaction Methods 0.000 abstract description 8
- 238000005299 abrasion Methods 0.000 abstract description 7
- 238000002955 isolation Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009423 ventilation Methods 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
Abstract
The utility model provides a loudspeaker box, which comprises an upper cover, a lower cover, a sounding monomer and a ventilating isolation piece, wherein the lower cover is covered and fixed on the upper cover and forms an accommodating space together; the sound generating unit divides the accommodating space into a front cavity and a rear cavity; the back chamber includes through ventilative separator air intercommunication's first back chamber and second back chamber, the upper cover with ventilative separator encloses to close and forms the second back chamber, the intracavity is filled in the second back chamber and is inhaled the sound granule, the upper cover orientation one side in cavity is equipped with can be right behind the second the motion of inhaling the sound granule carries out the arch of blocking. The protrusions block the bass movement, so that abrasion of sound absorption particles is reduced, and the change of the lowest resonance frequency (F0) caused by abrasion of the sound absorption particles is further reduced, and therefore the acoustic performance of the loudspeaker box with the longer virtual sound cavity length is effectively improved.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to an acoustoelectric field especially relates 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, but when the length of the D-BASS virtual sound cavity is longer, researches show that through long-term power type experiments (more than 48H), the band motion is violent, the band particles are seriously abraded, the lowest resonance frequency (F0) is greatly changed, the amplitude is reduced, the expansion effect is lost, the low-frequency performance is reduced, and when the loudspeaker box is installed on a mobile terminal, the power consumption of the whole loudspeaker box is high.
Accordingly, there is a need for a loudspeaker enclosure that slows down the movement of the band and reduces wear on the band particles.
[ Utility model ] content
An object of the utility model is to provide a loudspeaker box to solve and violently arouse the serious technical problem of the wear of the band granule because of the band motion.
The technical scheme that one of the purposes of the utility model provides as follows: the loudspeaker box comprises an upper cover, a lower cover, a sound-producing single body and a ventilating partition piece, wherein the lower cover is covered and fixed on the upper cover and forms an accommodating space together, the sound-producing single body is accommodated in the accommodating space, and the ventilating partition piece is fixed on the upper cover; the back chamber includes through ventilative separator air intercommunication's first back chamber and second back chamber, the upper cover with ventilative separator encloses to close and forms the second back chamber, the intracavity is filled in the second back chamber and is inhaled the sound granule, the upper cover orientation one side in cavity is equipped with can be right behind the second the motion of inhaling the sound granule carries out the arch of blocking.
Further, the number of the protrusions is at least two, and the at least two protrusions are distributed at intervals along the length direction of the second rear cavity.
Further, the protrusion extends in a width direction of the second rear cavity.
Further, the upper cover comprises 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 second upper cover part is arranged between the third upper cover part and the lower cover, and the breathable isolating piece is fixed on the second upper cover part; the first upper cover part and the sound production monomer enclose to close and form the front cavity, the sound production monomer the lower cover the first upper cover part the second upper cover part and ventilative separator encloses to close and forms the first back cavity, the second upper cover part the third upper cover part and ventilative separator encloses to close and forms the second back cavity.
Further, the bulge is arranged on one side, facing the second rear cavity, of the third upper cover part, and gaps are formed among the bulge, the second upper cover part and the breathable partition.
Furthermore, the second upper cover part is provided with a surrounding wall which extends towards the direction of the lower cover and is arranged at an interval with the lower cover, and the breathable isolating piece is fixed on the surrounding wall.
Further, the first upper cover part and the second upper cover part are integrally formed.
Furthermore, the loudspeaker box further comprises a powder filling hole penetrating through the third upper cover part, and the powder filling hole is communicated with the second rear cavity.
The beneficial effects of the utility model reside in that: the sound absorption particles are filled in the second rear cavity, so that the second rear cavity forms a D-BASS virtual sound cavity, and the low-frequency acoustic performance of the loudspeaker box is improved. When the length of the second rear cavity is longer, the bulge facing the second rear cavity is arranged on the shell and blocks the base movement, so that the abrasion of sound absorption particles is reduced, the change of the lowest resonance frequency (F0) caused by the abrasion of the sound absorption particles is further reduced, and the acoustic performance of the loudspeaker box with the longer virtual sound cavity length is effectively improved.
[ description of the drawings ]
Fig. 1 is a schematic structural diagram of a speaker box according to an embodiment of the present invention;
fig. 2 is an exploded view of a speaker box according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 4 is a schematic structural view of the speaker box provided in the embodiment of the present invention without a third upper cover;
fig. 5 is a schematic structural view of the third upper cover part and the protrusion matched with the embodiment of the present invention.
In the figure: 100. a speaker box; 11. a front cavity; 12. a rear cavity; 121. a first rear cavity; 122. a second rear cavity; 2. a housing; 21. an upper cover; 211. a first upper cover portion; 212. a second upper cover portion; 2121. a surrounding wall; 213. a third upper cover portion; 214. filling a powder hole; 22. a lower cover; 3. a sounding monomer; 4. a breathable barrier; 5. and (4) protruding.
[ detailed description ] embodiments
The present invention will be described in detail with reference to fig. 1 to 5.
Referring to fig. 1 to 5, an embodiment of the present invention provides a speaker box 100, which includes an upper cover 21, a lower cover 22 covering and fixed on the upper cover 21 and forming an accommodating space (not shown in the figure), a sound generating unit 3 accommodated in the accommodating space, and a ventilation spacer 4 fixed on the upper cover 21; the sound generating unit 3 divides the accommodating space into a front cavity 11 and a rear cavity 12; the rear cavity 12 comprises a first rear cavity 121 and a second rear cavity 122 which are communicated with each other through the air permeable partition 4, the upper cover 21 and the air permeable partition 4 are enclosed to form the second rear cavity 122, sound absorbing particles (not shown in the figure) are filled in the second rear cavity 122, and a protrusion 5 which can block the movement of the sound absorbing particles is arranged on one side of the upper cover 21, which faces the second rear cavity 122. Sound entering the second rear chamber 122 from the first rear chamber 121 increases its transmission path through sound-absorbing particles located in the second rear chamber 122, which may be used to improve the audio performance, particularly the low frequency acoustic performance, of the loudspeaker enclosure 100. The sound-absorbing particles may be zeolite particles or dust. The air-permeable partition 4 divides the rear cavity 12 into a first rear cavity 121 and a second rear cavity 122, and the first rear cavity 121 and the second rear cavity 122 can only be in air circulation with each other, and other substances, such as sound-absorbing particles, cannot enter each other.
Through the sound granule of inhaling of intussuseption in second rear chamber 122, owing to inhale the sound granule and have porous structure and high specific capacity, the air in the adsorbable second rear chamber 122 promotes the air compliance to reach the low frequency resonant frequency who reduces speaker box 100, and then improve the low frequency performance, be used for improving the low frequency acoustic performance, make second rear chamber 122 form the virtual acoustic cavity of D-BASS, in order to improve the low frequency acoustic performance of speaker box 100. When the length of the second rear cavity 122 is longer, the protrusion 5 facing the second rear cavity 122 is arranged on the housing 2, and the protrusion 5 blocks the base movement, so that the abrasion of sound absorption particles is reduced, and the change of the lowest resonance frequency (F0) caused by the abrasion of the sound absorption particles is further reduced, thereby effectively improving the acoustic performance of the loudspeaker box 100 with a longer virtual sound cavity length.
Preferably, at least two protrusions 5 are provided, and at least two protrusions 5 are spaced apart along the length of the second rear cavity 122. When the second rear chamber 122 forming the D-BASS virtual acoustic chamber is too long, a plurality of protrusions 5 may be provided to block the band motion. When a plurality of projections 5 are provided, the pitch of adjacent projections 5 is preferably 5 to 10 mm. Along the length direction of the second rear cavity 122, the plurality of protrusions 5 are a first protrusion, a second protrusion, … … and an nth protrusion in sequence, wherein the distance between the first protrusion and the nth protrusion along the length direction of the second rear cavity 122 and the shell 2 is preferably 5-10 mm. It will be appreciated that it is also possible to provide a projection 5.
Specifically, when the length of the second rear cavity 122 ranges between 10-20mm, a protrusion 5 may be provided along the length direction 1/2 of the second rear cavity 122. When the length of the second rear chamber 122 ranges between 20-30mm, one protrusion 5 may be provided at 1/3 and 2/3 along the length of the second rear chamber 122, respectively. In the present embodiment, two protrusions 5 are spaced apart from each other in the second rear cavity 122.
Preferably, the protrusion 5 extends in the width direction of the second rear cavity 122. Through this kind of setting mode, promote the effect of blockking to the bass motion. In the embodiment, two stepped bulges 5 are arranged in the second rear cavity 122, so that the abrasion of sound absorption particles is reduced, and the variation of the lowest resonance frequency (F0) is further reduced by 10-30 Hz.
Referring to fig. 2 to 4, the upper cover 21 includes a first upper cover portion 211, a second upper cover portion 212 and a third upper cover portion 213, the sound generating unit 3 is disposed between the first upper cover portion 211 and the lower cover 22, the second upper cover portion 212 is disposed between the third upper cover portion 213 and the lower cover 22, and the air-permeable spacer 4 is fixed to the second upper cover portion 212. The first upper cover part 211 and the sound generating unit 3 enclose to form a front cavity 11, the sound generating unit 3, the lower cover 22, the first upper cover part 211, the second upper cover part 212 and the air permeable partition 4 enclose to form a first rear cavity 121, and the second upper cover part 212, the third upper cover part 213 and the air permeable partition 4 enclose to form a second rear cavity 122.
Preferably, the protrusion 5 is disposed on a side of the third upper cover portion 213 facing the second rear cavity 122, and a gap (not shown) is disposed between the protrusion 5 and the second upper cover portion 212 and between the air-permeable partition 4.
Preferably, the second upper cover part 212 is provided with a surrounding wall 2121 extending toward the lower cover 22 and spaced apart from the lower cover 22, and the air-permeable separator 4 is fixed to the surrounding wall 2121. Through the arrangement mode, the space of the second rear cavity 122 is increased, the volume of the virtual sound cavity is effectively increased, and the acoustic performance of the loudspeaker box 100 is further improved. In this embodiment, the breathable separator 4 is fixedly sealed to the surrounding wall 2121 by heat fusion. The air permeable partition 4 is a mesh cloth, but it is not limited thereto as long as it can isolate the sound-absorbing particles from entering the first rear cavity 121 and can be air permeable and sound permeable.
Preferably, the first upper cover part 211 is integrally formed with the second upper cover part 212.
Preferably, the speaker box 100 further includes a powder filling hole 214 disposed through the third upper cover part 213, and the powder filling hole 214 communicates with the second rear cavity 122. With this arrangement, the sound-absorbing particles are poured into the second rear cavity 122 through the powder pouring hole 214, so that the second rear cavity 122 forms a D-BASS virtual sound cavity.
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, but these all fall into the protection scope of the present invention.
Claims (8)
1. The loudspeaker box is characterized by comprising an upper cover, a lower cover, a sound-producing single body and a ventilating partition piece, wherein the lower cover is covered and fixed on the upper cover and forms an accommodating space together, the sound-producing single body is accommodated in the accommodating space, and the ventilating partition piece is fixed on the upper cover; the back chamber includes through ventilative separator air intercommunication's first back chamber and second back chamber, the upper cover with ventilative separator encloses to close and forms the second back chamber, the intracavity is filled in the second back chamber and is inhaled the sound granule, the upper cover orientation one side in cavity is equipped with can be right behind the second the motion of inhaling the sound granule carries out the arch of blocking.
2. A loudspeaker enclosure according to claim 1, wherein at least two of the projections are provided, and at least two of the projections are spaced apart along the length of the second rear chamber.
3. A loudspeaker enclosure according to claim 1, wherein the protrusion extends in the width direction of the second rear cavity.
4. A speaker cabinet according to any one of claims 1 to 3, wherein the upper cover includes a first upper cover portion, a second upper cover portion, and a third upper cover portion, the sound-generating unit is provided between the first upper cover portion and the lower cover, the second upper cover portion is provided between the third upper cover portion and the lower cover, and the air-permeable partition is fixed to the second upper cover portion; the first upper cover part and the sound production monomer enclose to close and form the front cavity, the sound production monomer the lower cover the first upper cover part the second upper cover part and ventilative separator encloses to close and forms the first back cavity, the second upper cover part the third upper cover part and ventilative separator encloses to close and forms the second back cavity.
5. A loudspeaker enclosure according to claim 4, wherein the protrusion is provided on a side of the third upper cover part facing the second rear chamber, and wherein gaps are provided between the protrusion and the second upper cover part and between the protrusion and the air-permeable partition.
6. A loudspeaker enclosure according to claim 5, wherein the second cover part is provided with a surrounding wall extending towards the cover and spaced from the cover, the air-permeable partition being secured to the surrounding wall.
7. A loudspeaker enclosure according to claim 4, wherein the first upper cover portion is integrally formed with the second upper cover portion.
8. The speaker box of claim 4, further comprising a powder filling hole disposed through the third upper cover portion, the powder filling hole communicating with the second rear cavity.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021233837.8U CN212519305U (en) | 2020-06-29 | 2020-06-29 | Loudspeaker box |
| PCT/CN2020/101508 WO2022000557A1 (en) | 2020-06-29 | 2020-07-10 | Speaker box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021233837.8U CN212519305U (en) | 2020-06-29 | 2020-06-29 | Loudspeaker box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212519305U true CN212519305U (en) | 2021-02-09 |
Family
ID=74433850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021233837.8U Expired - Fee Related CN212519305U (en) | 2020-06-29 | 2020-06-29 | Loudspeaker box |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN212519305U (en) |
| WO (1) | WO2022000557A1 (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206433156U (en) * | 2017-01-12 | 2017-08-22 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
| CN206433106U (en) * | 2017-01-12 | 2017-08-22 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
| CN206542568U (en) * | 2017-03-01 | 2017-10-03 | 瑞声光电科技(常州)有限公司 | Loudspeaker enclosure |
| CN107147979B (en) * | 2017-06-02 | 2019-02-01 | 歌尔股份有限公司 | Loudspeaker mould group |
| WO2019071402A1 (en) * | 2017-10-09 | 2019-04-18 | 深圳传音通讯有限公司 | Loudspeaker and mobile terminal |
| WO2021000154A1 (en) * | 2019-06-30 | 2021-01-07 | 瑞声声学科技(深圳)有限公司 | Loudspeaker box |
| CN210075490U (en) * | 2019-07-25 | 2020-02-14 | 深圳市信维声学科技有限公司 | Novel loudspeaker |
| CN111179897A (en) * | 2020-01-02 | 2020-05-19 | 歌尔股份有限公司 | Active carbon sound absorbing material, sound generating device and electronic equipment |
| 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 |
-
2020
- 2020-06-29 CN CN202021233837.8U patent/CN212519305U/en not_active Expired - Fee Related
- 2020-07-10 WO PCT/CN2020/101508 patent/WO2022000557A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022000557A1 (en) | 2022-01-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210209 Termination date: 20210629 |