CN108924699B - Carbon fiber composite horn device capable of reducing and inhibiting resonance - Google Patents
Carbon fiber composite horn device capable of reducing and inhibiting resonance Download PDFInfo
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- CN108924699B CN108924699B CN201810763843.5A CN201810763843A CN108924699B CN 108924699 B CN108924699 B CN 108924699B CN 201810763843 A CN201810763843 A CN 201810763843A CN 108924699 B CN108924699 B CN 108924699B
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- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 93
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 93
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 239000002131 composite material Substances 0.000 title claims abstract description 35
- 230000002401 inhibitory effect Effects 0.000 title abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 83
- 238000013016 damping Methods 0.000 claims abstract description 34
- 238000005187 foaming Methods 0.000 claims abstract description 26
- 230000005484 gravity Effects 0.000 claims abstract description 10
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 239000002390 adhesive tape Substances 0.000 claims description 4
- 239000006261 foam material Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 9
- 238000001228 spectrum Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 230000000452 restraining effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- 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
- H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
- H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
- H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding for loudspeaker transducers
-
- 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
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention provides a device for reducing and inhibiting resonance horn and a manufacturing method thereof. The method comprises the following steps: the composite material comprises a carbon fiber inner layer (001), an intermediate layer made of a foaming material (002), a damping material (003) and a carbon fiber outer layer (004). The horn can be made of materials with different specific gravities of the horn wall, hollow foaming materials, damping materials and the like, and the thickness of the horn wall towards the hollow side is changed, so that resonance of the horn is effectively inhibited and reduced, and real sound is restored.
Description
Technical Field
The invention belongs to the technical field of sound equipment, particularly relates to a carbon fiber composite horn device for reducing and inhibiting resonance, particularly relates to a horn for reducing and inhibiting self-resonance of horn materials by using carbon fiber composite materials, and belongs to an innovative technology for reducing and inhibiting self-resonance and improving sound reduction quality by manufacturing horn walls by using different composite materials, foaming materials and damping materials according to horns suitable for different frequency bands.
Background
At present, most of materials widely used for manufacturing horns are single wood boards, steel plates, aluminum plates, glass fibers, plastics and the like, self resonance caused by material characteristics exists theoretically, the horns are limited by the characteristic limit, the sound pollution of a music playback system is often caused, so that 'wood sound', 'metal sound' and plastic sound which are well known by feverish friends appear, the heat expansion and the cold contraction of the inner wall of a horn can be caused due to the change of air temperature, the change of the horn curve is caused, and the high-fidelity restoration of music is seriously influenced.
Disclosure of Invention
In view of the above, the present invention provides a horn that can effectively reduce and suppress self-resonance in consideration of the above-mentioned problems. According to the frequency band covered by the horn, the horn is made of materials with different specific gravities of the horn wall, hollow foaming materials, damping materials and the like, and the thickness of the horn wall towards the hollow side is changed, so that the resonance of the horn is effectively inhibited and reduced.
The invention further provides a horn tube manufactured by the method, based on the characteristics of high strength and high modulus of the carbon fiber material, the horn tube cannot expand with heat and contract with cold due to the change of air temperature, so that the horn curve can be ensured to meet the design requirement all the time, and the real sound is restored.
Furthermore, based on the characteristics of high strength and small specific gravity of the carbon fiber material, the invention can manufacture the horn with super large size and round shape, not only can meet the requirements of the horn in a low-frequency area, but also can meet the requirements of the horn in a medium-frequency area and a high-frequency area, and is convenient for users to use and install.
The horn device comprises a carbon fiber inner layer (001), an intermediate layer (002) made of foaming materials, a damping material (003) and a carbon fiber outer layer (004).
The carbon fiber composite horn device for reducing and inhibiting resonance is ingenious in design, simple in structure, excellent in performance, convenient and practical.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a carbon fiber composite horn device for reducing and suppressing resonance provided by the present invention, in fig. 1, 001 is a carbon fiber inner layer, 002 is an intermediate layer made of a foam material, 003 is a damping factor (i.e., a damping material), and 004 is a carbon fiber outer layer.
The invention provides a carbon fiber composite horn device for reducing and inhibiting resonance, which comprises: the composite material comprises a carbon fiber inner layer (001), an intermediate layer (002) made of foaming materials, a damping material (003) and a carbon fiber outer layer (004).
Preferably, the carbon fiber inner layer (001) is a multi-layer carbon fiber composite layer, the thickness of the carbon fiber composite layer is determined according to different frequency band horns, and the thickness is 1mm to 15 mm;
the carbon fiber outer layer (004) is a multi-layer carbon fiber composite layer, the thickness of the carbon fiber composite layer is determined according to different frequency band horns, and the thickness is 1mm to 15 mm.
Preferably, the middle layer (002) made of the foaming material is made of polyurethane foaming material, and the thickness of the composite layer is determined according to the horn with different frequency bands; the thickness of the middle layer (002) made of the foaming material is 1mm to 100 mm;
the foaming material intermediate layer (002) is used for bonding and fixing the carbon fiber inner layer (001), the damping material (003) and the carbon fiber outer layer (004).
Preferably, the damping material (003) is made of materials with different specific gravities and different shapes according to different frequency band horns, the damping material is adhered to the outer side of the carbon fiber inner layer (001) by optionally adopting double faced adhesive tapes, the height of the adhered material is smaller than the height of a cavity between the carbon fiber inner layer (001) and the carbon fiber outer layer (004), and the damping material is fixed between the carbon fiber inner layer (001) and the carbon fiber outer layer (004) by utilizing a foaming material and is distributed randomly; the weight of the damping material (003) is 1-200 g.
Preferably, the carbon fiber composite horn device is round, square, rectangular or special-shaped; the carbon fiber composite horn device has different opening areas according to different frequency bands, and the opening area of the carbon fiber composite horn device is 1 square centimeter to 15 square meters.
Preferably, the loudspeaker is connected with the loudspeaker driving head through a screw port; or is connected with the loudspeaker driving head through a bolt device; or the mortise and tenon device is connected with the loudspeaker driving head.
Compared with the prior art, the horn is made of the composite material, the horn is made of materials with different specific gravities of the horn wall, hollow foaming materials, damping materials and the like, and the variation of the thickness of the horn wall towards the hollow side is assisted, so that the resonance of the horn is effectively inhibited and reduced.
Furthermore, based on the characteristics of high strength and high modulus of the carbon fiber material, the horn manufactured by the invention can not cause thermal expansion and cold contraction of the horn inner wall due to the change of air temperature, thereby ensuring that the horn curve always meets the design requirement.
Furthermore, based on the characteristics of high strength and small specific gravity of the carbon fiber material, the invention can manufacture the horn with super large size and round shape, not only can meet the requirements of the horn in a low-frequency area, but also can meet the requirements of the horn in a medium-frequency area and a high-frequency area, and is convenient for users to use and install.
Because the resonance of the horn is effectively inhibited and reduced, the high-fidelity sound can be better restored, and the quality of the sound playback system is improved from the link.
Drawings
FIG. 1 is a schematic structural view of a longitudinal section of a carbon fiber composite horn according to the present invention;
FIG. 2 is a graph comparing the resonance spectra of horns provided in example 1 and comparative example 1;
FIG. 3 is a graph comparing resonance spectra of horns provided in example 2 and comparative example 2;
fig. 4 is a graph comparing resonance spectra of the horns provided in example 3 and comparative example 3.
Detailed Description
For further understanding of the present invention, the carbon fiber composite horn device for reducing and suppressing resonance provided by the present invention is described below with reference to the following examples, and the scope of the present invention is not limited by the following examples.
Example 1
The structure of the invention is schematically shown in figure 1, the invention comprises a carbon fiber inner layer (001), a middle layer (002) made of polyurethane foaming material, a shock absorption material (003) and a carbon fiber outer layer (004. the sound reduction quality is improved by restraining and reducing the resonance of the carbon fiber inner layer
The thickness of the carbon fiber inner layer (001) is 1mm to 15mm, and different thicknesses are adopted according to requirements. In this example, the thickness of the carbon fiber inner layer (001) was 3 mm.
The thickness of the middle layer (002) made of the foaming material is 1mm to 100mm, and different thicknesses are adopted according to requirements. In this example, the thickness of the intermediate layer (002) made of the foamed material was 6 mm.
The damping material (003) is made of materials with different specific gravities and different shapes according to the number cylinders with different frequency bands, the damping material is adhered to the outer side of the carbon fiber inner layer (001) by random double faced adhesive tapes, the height of the adhered damping material is smaller than the height of a cavity between the carbon fiber inner layer (001) and the carbon fiber outer layer (004), the damping material is fixed between the carbon fiber inner layer (001) and the carbon fiber outer layer (004) by utilizing a foaming material, and the weight of the damping material (003) is 1-200 g and different. In this example, a circular lead plate was used as the damping material (003), and the diameter was 10mm and the thickness was 2 mm.
The thickness of the carbon fiber outer layer (004) is 1mm to 5mm, and different thicknesses are adopted according to requirements. In this example, the thickness of the carbon fiber outer layer (004) was 3 mm.
The horn is round, square, rectangular or other shape, and can be determined according to the requirements of horns in different frequency bands. In this embodiment, the horn is circular in shape.
Fig. 2 is a comparison of the resonance spectra of example 1 and comparative example 1 without filling the intermediate layer.
Comparative example 1
The same as example 1, but without the foam and the cushion, the middle layer was hollow.
Example 2
The structure of the invention is schematically shown in figure 1, the invention comprises a carbon fiber inner layer (001), a middle layer (002) made of polyurethane foaming material, a shock absorption material (003) and a carbon fiber outer layer (004. the sound reduction quality is improved by restraining and reducing the resonance of the carbon fiber inner layer
The thickness of the carbon fiber inner layer (001) is 1mm to 15mm, and different thicknesses are adopted according to requirements. In this example, the thickness of the carbon fiber inner layer (001) was 2 mm.
The thickness of the middle layer (002) made of the foaming material is 1mm to 100mm, and different thicknesses are adopted according to requirements. In this example, the thickness of the intermediate layer (002) made of the foamed material was 5 mm.
The damping material (003) is made of materials with different specific gravities and different shapes according to the number cylinders with different frequency bands, the damping material is adhered to the outer side of the carbon fiber inner layer (001) by random double faced adhesive tapes, the height of the adhered damping material is smaller than the height of a cavity between the carbon fiber inner layer (001) and the carbon fiber outer layer (004), the damping material is fixed between the carbon fiber inner layer (001) and the carbon fiber outer layer (004) by utilizing a foaming material, and the weight of the damping material (003) is 1-200 g and different. In this embodiment, the damping material (003) is a steel ball having a diameter of 4 mm.
The thickness of the carbon fiber outer layer (004) is 1mm to 5mm, and different thicknesses are adopted according to requirements. In this example, the thickness of the carbon fiber outer layer (004) was 2 mm.
The horn is round, square, rectangular or other shape, and can be determined according to the requirements of horns in different frequency bands. In this embodiment, the horn is circular in shape.
Fig. 3 is a comparison of the resonance spectra of example 2 and comparative example 2 without filling the intermediate layer.
Comparative example 2
The same as example 2, but without the foam and the cushion, the middle layer was hollow.
Example 3
The structure of the invention is schematically shown in figure 1, the invention comprises a carbon fiber inner layer (001), a middle layer (002) made of polyurethane foaming material, a shock absorption material (003) and a carbon fiber outer layer (004. the sound reduction quality is improved by restraining and reducing the resonance of the carbon fiber inner layer
The thickness of the carbon fiber inner layer (001) is 1mm to 15mm, and different thicknesses are adopted according to requirements. In this example, the thickness of the carbon fiber inner layer (001) was 4 mm.
The thickness of the middle layer (002) made of the foaming material is 1mm to 100mm, and different thicknesses are adopted according to requirements. In this example, the thickness of the intermediate layer (002) made of the foamed material was 4 mm.
The shock absorption material (003) is made of materials with different specific gravities and different shapes according to the horn with different frequency bands, and is fixed between the carbon fiber inner layer (001) and the carbon fiber outer layer (004) by utilizing a foaming material, and the weight of the shock absorption material (003) is 1-200 g and is different. In this embodiment, the damping material (003) is a steel ball having a diameter of 3 mm.
The thickness of the carbon fiber outer layer (004) is 1mm to 5mm, and different thicknesses are adopted according to requirements. In this example, the thickness of the carbon fiber outer layer (004) was 4 mm.
The horn is round, square, rectangular or other shape, and can be determined according to the requirements of horns in different frequency bands. In this embodiment, the horn is circular in shape.
Fig. 4 is a comparison of the resonance spectra of example 3 and comparative example 3 when the intermediate layer is not filled.
Comparative example 3
The same as example 3, but without the foam and the cushion, the middle layer was hollow.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A carbon fiber composite horn device for reducing and suppressing resonance, comprising: the composite material comprises a carbon fiber inner layer (001), an intermediate layer (002) made of foaming materials, a damping material (003) and a carbon fiber outer layer (004);
the damping material (003) is determined to use materials with different specific gravities and different shapes according to the horn with different frequency bands, the damping material is adhered to the outer side of the carbon fiber inner layer (001) by random double faced adhesive tape, the height of the adhered damping material is smaller than the height of a cavity between the carbon fiber inner layer (001) and the carbon fiber outer layer (004), and the damping material is fixed between the carbon fiber inner layer (001) and the carbon fiber outer layer (004) by foam materials and is distributed randomly; the weight of the damping material (003) is 1-200 g.
2. The carbon fiber composite horn device according to claim 1, wherein the carbon fiber inner layer (001) is a multi-layer carbon fiber composite layer, the thickness of the carbon fiber composite layer is determined according to horns of different frequency bands, and the thickness is 1mm to 15 mm;
the carbon fiber outer layer (004) is a multi-layer carbon fiber composite layer, the thickness of the carbon fiber composite layer is determined according to different frequency band horns, and the thickness is 1mm to 15 mm.
3. The carbon fiber composite horn device of claim 1, wherein the middle layer (002) made of the foaming material is made of polyurethane foaming material, and the thickness of the composite layer is determined according to horns in different frequency bands; the thickness of the middle layer (002) made of the foaming material is 1mm to 100 mm;
the foaming material intermediate layer (002) is used for bonding and fixing the carbon fiber inner layer (001), the damping material (003) and the carbon fiber outer layer (004).
4. The carbon fiber composite horn device of claim 1, wherein the carbon fiber composite horn device is circular, or square, or rectangular, or profiled in shape; the carbon fiber composite horn device has different opening areas according to different frequency bands, and the opening area of the carbon fiber composite horn device is 1 square centimeter to 15 square meters.
5. The carbon fiber composite horn device of claim 1, wherein the connection to the speaker driver head is by screws; or is connected with the loudspeaker driving head through a bolt device; or the mortise and tenon device is connected with the loudspeaker driving head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810763843.5A CN108924699B (en) | 2018-07-12 | 2018-07-12 | Carbon fiber composite horn device capable of reducing and inhibiting resonance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810763843.5A CN108924699B (en) | 2018-07-12 | 2018-07-12 | Carbon fiber composite horn device capable of reducing and inhibiting resonance |
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| CN108924699A CN108924699A (en) | 2018-11-30 |
| CN108924699B true CN108924699B (en) | 2020-10-13 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2325946Y (en) * | 1997-09-15 | 1999-06-23 | 珠海经济特区美声电业有限公司 | Composite cones |
| CN206136261U (en) * | 2016-08-26 | 2017-04-26 | 苏州秀转电子有限公司 | Stereo set basin frame with damping structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2854989Y (en) * | 2005-12-12 | 2007-01-03 | 杨炼 | Loudspeaker type sound acoustic lens isogenesis sound cone radiator |
| CN101137251B (en) * | 2006-08-28 | 2011-11-23 | 金大仁 | Sounding vibration board structure of loudspeaker |
| EP3092820B1 (en) * | 2014-01-06 | 2020-05-06 | Wall Audio Inc. | Linear moving coil magnetic drive system |
| CN105568429B (en) * | 2016-03-18 | 2017-07-21 | 广州联洪合成材料有限公司 | A kind of preparation method of damping material |
| CN206908841U (en) * | 2017-06-26 | 2018-01-19 | 歌尔科技有限公司 | A kind of complex vibration plate and the loudspeaker provided with the oscillating plate |
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2018
- 2018-07-12 CN CN201810763843.5A patent/CN108924699B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2325946Y (en) * | 1997-09-15 | 1999-06-23 | 珠海经济特区美声电业有限公司 | Composite cones |
| CN206136261U (en) * | 2016-08-26 | 2017-04-26 | 苏州秀转电子有限公司 | Stereo set basin frame with damping structure |
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