CN1443019A - Box body of loudspeaker - Google Patents
Box body of loudspeaker Download PDFInfo
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- CN1443019A CN1443019A CN 03114218 CN03114218A CN1443019A CN 1443019 A CN1443019 A CN 1443019A CN 03114218 CN03114218 CN 03114218 CN 03114218 A CN03114218 A CN 03114218A CN 1443019 A CN1443019 A CN 1443019A
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- sound
- pit
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- casing
- sound box
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Abstract
A box body for loudspeaker box including internal layer for the box body features that the internal layer itself is a rigid acoustic layer with through holes, and also it can have pits distributed on the surface of the rigid acoustical layer so that the rigidity of box body for loudspeaker can be increased, the acoustical absorbent structure further makes the loudspeaker box body have proper damping, the vibration and sound field interference caused by acoustic vibration-reducing material can be avoided, and the sound propagating efficiency can also be raised, if pits are set on surface of the rigid acoustical layer.
Description
Technical field the present invention relates to the sound technique field, particularly relates to a kind of sound box.
Background technology is well-known, and audio amplifier is the final tache in the whole sound system, and its playing quality is very big to the whole system performance impact.Estimate that by professional person in the row audio amplifier accounts for more than 30% of whole system to the contribution of whole sound system.
Along with the fast development of electronic technology, as audiogenic device in the sound system (as CD player, DVD player etc.) and amplifier, the existing at present leap greatly of its technical indicator reaches very perfect level.And as the final tache in the sound system, though the also development to some extent of loud speaker that uses in the audio amplifier and frequency divider, the progress of casing aspect is very slow always.
According to known viewpoint, a desirable sound box should be a rigid structure, and when the loud speaker sounding, casing should not vibrate, in order to avoid generation sound dyes.Simultaneously, casing self also should have the damping coefficient and the acoustical reduction coefficient of appropriateness.
But traditional sound box, manufacturing materials all are plank or medium airtight pane basically.These materials are not because its physical characteristic is not good enough, make to have three serious problems behind the sound box.First gear housing rigidity deficiency, loudspeaker unit brings out " the case sound " that very easily produces vibration down and send the interference original sound field in case; It two is that the acoustical reduction coefficient of casing is lower, and sound more easily sees through casing and destroys original sound field in the case; It three is to be difficult to make reasonably non-parallel face casing, thereby makes its frequency response curve significantly peak valley occur.
Above various shortcoming all can damage or disturb original sound field, makes the tonequality deterioration.And according to the interrelated data report, present audio amplifier more than 90% all has sound in various degree to dye, thereby forms the adverse consequences that different audio amplifiers has different individual characteies.
At these shortcomings, people begin to seek new solution.Mainly contain following approach:
1, strengthen the gear housing rigidity aspect:
(1) with the bigger material of thickness: as certain famous brand audio amplifier, preceding baffle adopts the 76mm plate
Material.Some are audio amplifier preferably, and preceding baffle thickness also by general 18mm progressively
Thicken 38mm.
(2) use new material: as using metal, cement, stone material and some resin materials
Deng.
2, change the sound box shape: make the form of non-parallel face, not only can improve gear housing rigidity, and can also reduce or eliminate the generation of standing wave.
3, strengthen the damping coefficient of casing self: as use sound-absorbing material preferably, even use wedge shape material.
More than all effort, though make certain gains because the raising greatly of production cost industrially produces cheap and good-quality audio amplifier in a large number and hardly may.
And in recent years, adopt associated materials making audio amplifiers such as concrete, and having obtained bigger progress, Chinese patent CN1189663A discloses a kind of concrete sound equipment.The Britain B﹠amp that the world is top; Sound equipment special manufacturers such as W and U.S. THIEL, the also concrete loudspeaker box that strengthens with glass fibre in test manufacture.Domesticly see that also many families report is arranged.
But the audio amplifier of concrete for making also has a very big shortcoming: the damping coefficient deficiency of casing, and easily owing to the case self-energy is put aside the sound of striking a chord.
General audio amplifier, no matter be single or multiple lift, its casing or internal layer all are to be made by the dense material that does not have through-hole structure.In order to make casing have the damping of appropriateness, just the sound-absorbing damping material is loaded onto on the surface within it.Commonly used have sponge, fiberglass products and a pitch etc.Use these materials, also can reach certain effect, but the sponge that also exists stickup causes vibration and disturbs in the case problem such as sound field.
Summary of the invention the purpose of this invention is to provide a kind of gear housing rigidity good, again the sound box of appropriate damping arranged.
The present invention includes the casing internal layer, it is characterized in that the casing internal layer itself is the rigidity sound absorbing layer that through-hole structure is arranged.Can communicate between the Kong Yukong of this through hole, this through hole can make the rigidity sound absorbing layer have sound-absorbing effect preferably.
Be distributed with pit on the above-mentioned rigidity sound absorbing layer surface.Pit can improve the propagation efficiency of sound.
Above-mentioned pit evenly distributes.This even distributed architecture can make processing method simple.
Above-mentioned pit is a hemispherical dimples, and radius is 2-6mm, and spacing is 6-16mm.This structure can reach the propagation efficiency of sound preferably under the equally distributed situation of pit.Hemisphere is a kind of structure in the pit.
Above-mentioned pit distributes by following rule: near more apart from loudspeaker, the quantity of pit is many more, and pit is more little; Far away more apart from loudspeaker, the quantity of pit is few more, and pit is big more.This rule distributes can reach the propagation efficiency of sound preferably.
Above-mentioned rigidity sound absorbing layer is a kind of in concrete layer, magnesite material layer, epoxy resin layer, the artificial marble layer.This rigidity sound absorbing layer can have multiple implementation, above-named just wherein a part.
Above-mentioned sound box also comprises the casing skin, and the casing skin is the dense material puigging.The dense material layer can be realized vibration damping and sound insulation better.
The outer one deck decorative layer in addition of above-mentioned casing.Decorative layer can strengthen the aesthetic feeling of casing outward appearance.
The present invention is because the employing of casing internal layer itself is the rigidity sound absorbing layer that through-hole structure is arranged.So the rigidity of sound box strengthens, and makes effectiveness in vibration suppression better; The through hole sound-absorbing structure makes sound box that appropriate damping is arranged again, and does not need its inner surface to load onto the sound-absorbing damping material, avoids the sound-absorbing damping material to cause problems such as vibration and the interior sound field of interference case.If rigidity sound absorbing layer surface is provided with pit, also can improve the propagation efficiency of sound.
Description of drawings
Fig. 1 is a sound box ectonexine structural representation.
Fig. 2 is an A part enlarged drawing among Fig. 1.
Among the figure: 1 is internal layer, and 2 is outer.
Embodiment embodiment 1
Sound box in the present embodiment comprises the casing internal layer, and casing internal layer 1 is the concrete layer that has the sound-absorbing through hole.Can communicate between the Kong Yukong of this through hole, this through hole can make the rigidity sound absorbing layer have sound-absorbing effect preferably.
In addition, because sound box internal layer 1 of the present invention is the rigidity crust, so just provide a kind of interior air-flow of casing that makes more smoothly may technically.Here it is is provided with the pit that many sizes, the depth can be different on the sound box inner surface, and distributes according to certain rules.According to hydromechanical principle, because the effect of air in the pit on the interior just can make the interior gas-flow resistance of casing littler, more smooth and easy.Its principle can make golf fly more steadily as the small rut on the golf, and is farther the same.The pit that distributes on the rigidity sound absorbing layer surface is a hemispherical dimples, and pit evenly distributes, and the pit radius is 2-6mm, and spacing is 6-16mm.Pit can improve the propagation efficiency of sound, and this even distributed architecture can make processing method simple.Hemisphere is a kind of structure in the pit.
Sound box also comprises casing skin 2, and casing skin 2 is dense material puiggings.The dense material puigging can be realized vibration damping and sound insulation better.Casing outer 2 also has one deck decorative layer.Decorative layer can strengthen the aesthetic feeling of casing outward appearance.
Utilize prior art, realize this purpose, many methods are arranged.The simplest and effective way can be achieved like this: choose aggregates such as sand (main points are that sieve goes too big and too little aggregate) according to certain standard, select suitable Binder Materials or binding agent for use, control the amount of moisture wherein or diluent then, make mixed material be in half in half wet state, just can build moulding on mould, the rigidity sound absorbing layer 1 that has sound-absorbing through hole and pit can one-shot forming.Also can make the rigid layer that has the sound-absorbing through hole with foaming method.
As long as the size of control aggregate and the ratio of Binder Materials or binding agent just can have been produced the rigidity sound absorbing layer of different through-hole structures by different requirements.Thereby can satisfy the different requirements internally-damped of all types of audio amplifiers to audio amplifier.
As for the skin of audio amplifier, can adopt general process.Adopt normal concrete, organic resin class material or other Binder Materials of mineral-type according to different designing requirements, also can use other materials such as stone material, glass.
And the decorative layer of outermost availablely sprays paint, conventional ways such as leather, wooden skin handle.
Because what the present invention adopted is that the way of building is finished master operation, so, as long as design and produce out various suitable non-parallel face box molds, just can produce in a large number and variously standing wave take place hardly and gear housing rigidity is good, again the high-quality audio amplifier of appropriate damping has been arranged with industrialized mode.
Embodiment 2
Pit in the present embodiment distributes by following rule: near more apart from loudspeaker, the quantity of pit is many more, and pit is more little; Far away more apart from loudspeaker, the quantity of pit is few more, and pit is big more.This rule distributes can reach the propagation efficiency of sound preferably.Rigidity sound absorbing layer 1 of the present invention also can be a kind of in the similar material layers such as magnesite material layer, epoxy resin layer, artificial marble layer.These above-mentioned material layers, all available known manufacture method is made.
Claims (9)
1, a kind of sound box comprises the casing internal layer, it is characterized in that the casing internal layer itself is the rigidity sound absorbing layer that through-hole structure is arranged.
2, sound box according to claim 1 is characterized in that being distributed with pit on the above-mentioned rigidity sound absorbing layer surface.
3, sound box according to claim 2 is characterized in that above-mentioned pit evenly distributes.
4, sound box according to claim 3 is characterized in that above-mentioned pit is a hemispherical dimples, and radius is 2-6mm, and spacing is 6-16mm.
5, sound box according to claim 2, it is characterized in that above-mentioned pit distributes by following rule: near more apart from loudspeaker, the quantity of pit is many more, and pit is more little; Far away more apart from loudspeaker, the quantity of pit is few more, and pit is big more.
6,, it is characterized in that above-mentioned rigidity sound absorbing layer is a kind of in concrete layer, magnesite material layer, epoxy resin layer, the artificial marble layer according to claim 1 or 2 or 3 or 4 or 5 described sound boxes.
7, according to claim 1 or 2 or 3 or 4 or 5 described sound boxes, it is characterized in that above-mentioned sound box also comprises the casing skin, the casing skin is the dense material puigging.
8, sound box according to claim 6 is characterized in that above-mentioned sound box also comprises the casing skin, and the casing skin is the dense material puigging.
9, sound box according to claim 7 is characterized in that the outer one deck decorative layer in addition of above-mentioned casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031142184A CN1310571C (en) | 2003-04-12 | 2003-04-12 | Box body of loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031142184A CN1310571C (en) | 2003-04-12 | 2003-04-12 | Box body of loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1443019A true CN1443019A (en) | 2003-09-17 |
| CN1310571C CN1310571C (en) | 2007-04-11 |
Family
ID=27797015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031142184A Expired - Fee Related CN1310571C (en) | 2003-04-12 | 2003-04-12 | Box body of loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1310571C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101808258A (en) * | 2010-04-27 | 2010-08-18 | 陈楚平 | Loudspeaker box body with metal layers |
| CN105916078A (en) * | 2016-06-29 | 2016-08-31 | 广东欧珀移动通信有限公司 | Audio structure and electronic device |
| TWI575961B (en) * | 2012-04-13 | 2017-03-21 | Gong-Ben Lin | Speaker box |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2290961Y (en) * | 1996-12-31 | 1998-09-09 | 林海涛 | Tone quality harmonious rapid prototyping audio amplifier |
| CN2342536Y (en) * | 1998-08-11 | 1999-10-06 | 成都奥斯达科技有限公司 | Loudspeaker mounted with damping sound suction structure |
| CN2411646Y (en) * | 1999-05-28 | 2000-12-20 | 申国强 | Loudspeaker with sound-proof laminate on casting outboard |
-
2003
- 2003-04-12 CN CNB031142184A patent/CN1310571C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101808258A (en) * | 2010-04-27 | 2010-08-18 | 陈楚平 | Loudspeaker box body with metal layers |
| TWI575961B (en) * | 2012-04-13 | 2017-03-21 | Gong-Ben Lin | Speaker box |
| CN105916078A (en) * | 2016-06-29 | 2016-08-31 | 广东欧珀移动通信有限公司 | Audio structure and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1310571C (en) | 2007-04-11 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070411 Termination date: 20120412 |