CN207124730U - A kind of sound-absorbing material block - Google Patents
A kind of sound-absorbing material block Download PDFInfo
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- CN207124730U CN207124730U CN201721214865.3U CN201721214865U CN207124730U CN 207124730 U CN207124730 U CN 207124730U CN 201721214865 U CN201721214865 U CN 201721214865U CN 207124730 U CN207124730 U CN 207124730U
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- sound
- absorbing material
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- level duct
- material block
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Abstract
The utility model proposes a kind of sound-absorbing material block applied to loudspeaker module resonator, sound-absorbing material block is formed in mould block structure, and block structure is cuboid, square, cylinder or anomalistic object structure；The overall length of block structure is 3~50mm, and beam overall is 2~30mm, total a height of 0.5~10mm；Sound-absorbing material block includes one-level duct, two level duct and three-level duct.During speaker operation, air molecule rapidly enters the wider array of two level duct of distribution by one-level duct, is finally absorbed and is discharged by three-level duct, increases the virtual volume of resonator.One-level duct reduces the damping that air molecule reaches and passes in and out three-level duct, loudspeaker module Q values are made substantially not reduce, one-level duct can allow more air molecules to pass in and out three-level ducts within the Millisecond time, resonant frequency F0 is reduced more, and the average sensitivity in 200HZ 900HZ frequency ranges can be increased more.
Description
Technical field：
Electro-acoustic product technical field is the utility model is related to, more particularly to a kind of sound-absorbing material block.
Background technology：
Increasingly lightening with electronic product, the resonator of speaker system component is less and less, and resonant frequency can rise
Height, low-frequency sound pressure sensitivity can reduce, and directly influence acoustical behavior.Found by checking, the porous material such as activated carbon and zeolite
Material effectively can absorb and discharge air molecule, be loaded into the resonator of loudspeaker assembly, by absorbing and discharging air
Molecule increases the space of resonator, so as to improve resonant frequency, lifts acoustical behavior.
At present, the preferable sound-absorbing material of application effect is mainly zeolite powder of sial mass ratio more than 200 etc..Raising
In the application of sound device, need that above powdered form zeolite particles first are prepared into sound-absorbing particle by forming technique, then by sound-absorbing particle
It is filled into the rear operatic tunes.Particle packing is to the rear operatic tunes, and when the rear operatic tunes is in irregular shape, the utilization rate for loading volume is not high, it is impossible to
More sound-absorbing particles are filled, it is limited that resonant frequency reduces space.It is particles filled arrive the rear operatic tunes during particle waste rate
It is very high, and filler particles technique, rear acoustical cavity complicated design, filling packaging process is more, causes the cost entirely filled
It is high.
With the development of technology and the raising of consumer demand, electro-acoustic product all tends to thin type development, and this requires to raise
Sound device module will also reduce accordingly, the very little that the space of the rear operatic tunes will become, because the encapsulation of sound-absorbing particle is limited to rear sound
The space of chamber and encapsulating material material etc., sound-absorbing material is caused to be difficult to be put into the rear operatic tunes, it is impossible to realize estimated performance mesh
Mark.
Utility model content：
The utility model is in view of the deficiencies of the prior art, it is therefore an objective to provides a kind of sound-absorbing material block；Sound-absorbing material
Block can be fixed in the rear operatic tunes of loudspeaker module, and low frequency performance improves tonequality during sound-absorbing material block can be adjusted.
Technology solution of the present utility model is as follows：
A kind of sound-absorbing material block, the sound-absorbing material block are formed in mould block structure, and the block structure is rectangular
Body, square, cylinder or anomalistic object structure；The overall length of the block structure is 3~50mm, and beam overall is 2~30mm, always
A height of 0.5~10mm；The longitudinal direction of the block structure is provided with multiple one-level ducts, and sound absorber is filled between one-level duct
Material；The sound-absorbing material is bonded through binding agent by zeolite powder and formed, and has two level duct, zeolite original between zeolite powder particulate
Powder particulate has three-level duct.
Preferably, the sound-absorbing material block is fixed on the resonant acoustic intracavitary of loudspeaker module.
Preferably, the one-level duct be multigroup genesis analysis in through hole or blind hole on block structure, one-level duct
Between form packing space, sound-absorbing material is filled in packing space, and the aperture in hole is 100 microns -5 millimeters.
Preferably, the hole is one in circular port, slotted eye, track type hole, square opening or irregular shape hole
Kind is several.
Preferably, the two level duct is 0.3 micron -50 microns.
Preferably, the average particle diameter size of the zeolite powder particulate is 0.3 micron -5 microns, the micropore in three-level duct
Aperture be 0.3 nanometer -0.9 nanometer.
Preferably, the binding agent is inorganic binding agent or organic polymer class binding agent, inorganic binding agent bag
Alumina gel or Ludox are included, organic polymer class binding agent is polyacrylate, polyurethane, epoxy resin, neoprene, silicon rubber
Glue or polyvinyl acetate.
Preferably, mass ratio range of the binding agent in sound-absorbing material is 1%~10%.
The beneficial effects of the utility model are：
The utility model proposes a kind of sound-absorbing material block applied to loudspeaker module resonator, its sound-absorbing material block includes
100 microns -5 millimeters of one-level duct, 0.3 micron -50 microns of two level duct, 0.3 nanometer of -0.9 nanometer of three-level duct.Raise one's voice
When device works, air molecule rapidly enters the wider array of two level duct of distribution by one-level duct, is finally absorbed by three-level duct
And release, increase the virtual volume of resonator.The volume of the resonator of loudspeaker module is limited, and sound-absorbing block being capable of maximum profit
With the volume of resonator, the increase for sound-absorbing block amount, resonant frequency F0 can be lower, flat in 200HZ-900HZ frequency ranges
Equal sensitivity can be increased more, while Q values (electroacoustic quality factor) will not be reduced substantially.One-level duct can allow air molecule
The quick two level duct for being distributed to sound-absorbing block, is finally absorbed and is discharged by three-level duct, one-level duct reduces air molecule and arrived
Reach and pass in and out the damping in three-level duct, loudspeaker module Q values is not substantially reduced, one-level duct can be in the Millisecond time
More air molecules are inside allowed to pass in and out three-level ducts, more, being averaged in 200HZ-900HZ frequency ranges that resonant frequency F0 is reduced
Sensitivity can be increased more.
Brief description of the drawings：
The utility model is described further below in conjunction with the accompanying drawings：
Fig. 1 is the top view of sound-absorbing material block of the present utility model；
Fig. 2 is the sectional view of sound-absorbing material block of the present utility model；
In Fig. 1 and 2：1-sound-absorbing material block；2-one-level duct；3-sound-absorbing material；4-two level duct；5-three-level hole
Road.
Embodiment：
Embodiment, see attached Fig. 1 and 2, a kind of sound-absorbing material block, the sound-absorbing material block 1 is formed in mould block structure,
The block structure is cuboid, square, cylinder or anomalistic object structure；The overall length of the block structure be 3~
50mm, beam overall are 2~30mm, total a height of 0.5~10mm；The longitudinal direction of the block structure is provided with multigroup one-level duct 2, one-level
Sound-absorbing material 3 is filled between duct；The sound-absorbing material by zeolite powder through binding agent bond form, zeolite powder particulate it
Between there is two level duct 4, zeolite powder particulate has three-level duct 5.In the present embodiment, block structure is cuboid, block knot
The overall length of structure is 19.5mm, beam overall 9.5mm, total a height of 2.4mm.
The sound-absorbing material block is fixed on the resonant acoustic intracavitary of loudspeaker module.In the present embodiment, loudspeaker specification uses
Long generous size is as follows：15mm*11mm*3mm, volume of resonant cavity about 0.5ml, the length, width and height size of resonator are about：20mm*
10mm*2.5mm。
The one-level duct forms between through hole or blind hole on block structure, one-level duct for multigroup genesis analysis and filled out
Space is filled, packing space is formed between one-level duct, sound-absorbing material is filled in packing space, and the aperture in hole is 0.7 millimeter.
The hole is the one or more in circular port, slotted eye, track type hole, square opening or irregular shape hole.
In the present embodiment, hole is circular port.
The two level duct is 0.3 micron -50 microns.
The average particle diameter size of the zeolite powder particulate is 0.3 micron -5 microns, and the aperture of the micropore in three-level duct is
0.3 nanometer -0.9 nanometer.
The binding agent is inorganic binding agent or organic polymer class binding agent, inorganic binding agent include Alumina gel or
Ludox, organic polymer class binding agent are polyacrylate, polyurethane, epoxy resin, neoprene, silicon rubber or poly-vinegar acid
Ethene.In the present embodiment, using organic polymer class binding agent, i.e. polyacrylate.
Mass ratio range of the binding agent in sound-absorbing particle is 5%.
During speaker operation, air molecule rapidly enters the wider array of two level duct of distribution by one-level duct, finally by three
Level duct absorbs and discharged, and increases the virtual volume of resonator.The volume of the resonator of loudspeaker module is limited, sound-absorbing
Block can the maximum volume for utilizing resonator, the increase for sound-absorbing block amount, resonant frequency F0 can be lower, 200HZ-900HZ frequencies
Average sensitivity in the range of rate can be increased more.One-level duct reduces the resistance that air molecule reaches and passes in and out three-level duct
Buddhist nun, loudspeaker module Q values are made substantially not reduce, one-level duct can allow more air molecules to pass in and out three within the Millisecond time
Level duct, resonant frequency F0 are reduced more, and the average sensitivity in 200HZ-900HZ frequency ranges can be increased more.
Above-described embodiment is the specific descriptions carried out to the utility model, and simply the utility model is carried out furtherly
It is bright, it is impossible to be interpreted as the restriction to scope of protection of the utility model, those skilled in the art is according in above-mentioned utility model
Appearance is made some nonessential modifications and adaptations and each fallen within the scope of protection of the utility model.
Claims (8)
- A kind of 1. sound-absorbing material block, it is characterised in that：The sound-absorbing material block is formed in mould block structure, the block knot Structure is cuboid, square, cylinder or anomalistic object structure；The overall length of the block structure is 3~50mm, beam overall 2 ~30mm, total a height of 0.5~10mm；The longitudinal direction of the block structure is provided with multiple one-level ducts, and one-level is filled between duct There is sound-absorbing material；The sound-absorbing material is bonded through binding agent by zeolite powder and formed, and has second hole between zeolite powder particulate Road, zeolite powder particulate have three-level duct.
- A kind of 2. sound-absorbing material block according to claim 1, it is characterised in that：The sound-absorbing material block is fixed on loudspeaker The resonant acoustic intracavitary of module.
- A kind of 3. sound-absorbing material block according to claim 1, it is characterised in that：The one-level duct is multigroup genesis analysis Packing space is formed between through hole or blind hole on block structure, one-level duct, sound-absorbing material is filled in packing space, hole Aperture be 100 microns -5 millimeters.
- A kind of 4. sound-absorbing material block according to claim 3, it is characterised in that：The hole is circular port, slotted eye, race One or more in road shape hole, square opening or irregular shape hole.
- A kind of 5. sound-absorbing material block according to claim 1, it is characterised in that：The two level duct is 0.3 micron -50 micro- Rice.
- A kind of 6. sound-absorbing material block according to claim 1, it is characterised in that：The average grain diameter of the zeolite powder particulate Size is 0.3 micron -5 microns, and the aperture of the micropore in three-level duct is 0.3 nanometer -0.9 nanometer.
- A kind of 7. sound-absorbing material block according to claim 1, it is characterised in that：The binding agent be inorganic binding agent or Organic polymer class binding agent, inorganic binding agent include Alumina gel or Ludox, and organic polymer class binding agent is polypropylene Acid esters, polyurethane, epoxy resin, neoprene, silicon rubber or polyvinyl acetate.
- A kind of 8. sound-absorbing material block according to claim 7, it is characterised in that：Matter of the binding agent in sound-absorbing material It is 1%~10% to measure proportion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721214865.3U CN207124730U (en) | 2017-09-21 | 2017-09-21 | A kind of sound-absorbing material block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721214865.3U CN207124730U (en) | 2017-09-21 | 2017-09-21 | A kind of sound-absorbing material block |
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| Publication Number | Publication Date |
|---|---|
| CN207124730U true CN207124730U (en) | 2018-03-20 |
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| CN201721214865.3U Active CN207124730U (en) | 2017-09-21 | 2017-09-21 | A kind of sound-absorbing material block |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114501258A (en) * | 2020-10-28 | 2022-05-13 | 华为技术有限公司 | Loudspeaker module and electronic equipment |
-
2017
- 2017-09-21 CN CN201721214865.3U patent/CN207124730U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114501258A (en) * | 2020-10-28 | 2022-05-13 | 华为技术有限公司 | Loudspeaker module and electronic equipment |
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