CN202406287U - Ultrathin sound box - Google Patents
Ultrathin sound box Download PDFInfo
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- CN202406287U CN202406287U CN2011205726295U CN201120572629U CN202406287U CN 202406287 U CN202406287 U CN 202406287U CN 2011205726295 U CN2011205726295 U CN 2011205726295U CN 201120572629 U CN201120572629 U CN 201120572629U CN 202406287 U CN202406287 U CN 202406287U
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- hole
- vibrating diaphragm
- resonant cavity
- sound basin
- sound
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- 230000005855 radiation Effects 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 11
- 230000003321 amplification Effects 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
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Abstract
The utility model discloses an ultrathin sound box which is characterized by comprising a resonant cavity fixed on a rear shell of a flat television; a loudspeaker unit of which the sound basins are correspondingly loaded in the sound basin hole one by one; and a passive radiation unit with passive diaphragms which are correspondingly arranged in the diaphragm hole one by one, wherein for the resonant cavity, the thickness is smaller than the length and the width; the inner wall of the resonant cavity is provided with at least one sound basin hole and at least one diaphragm hole that faces outside the back of the rear shell; the effective area of the passive diaphragm is no less than the effective sound basin area of the loudspeaker; the effective diameter of the passive diaphragm is no less than the maximum thickness of the resonant cavity; and the loudspeaker unit, the passive radiation unit and the resonant cavity remain sealed. In the scheme, the air in the resonant cavity and even the passive diaphragm become relatively large loads of the loudspeaker unit, so that the moderate amplitude of the loudspeaker unit can achieve fine low frequency resonance at the passive diaphragm, finally significantly improving low frequency effect.
Description
Technical field
The utility model relates to a kind of ultrathin audio amplifier that is used for panel TV equipment.
Background technology
As multimedia equipment, panel TV or relevant device have obtained tremendous development, in feature richness; The panelized trend of its form is also more obvious; The thickness of whole device is more and more littler, and except the parts that are used to show, taking up room of miscellaneous part is limited all the more.Part electronic unit reduced volume relatively easily, but the sound system part is difficult to dwindle, and its reason is that volume its low frequency performance when dwindling of audio amplifier sharply descends.So, at present very at large, its sound system poor effect of the television equipment of dull and stereotyped form, its low-frequency effect can't satisfy the audiovisual demand at all.
Tackle the trend of this small size, minimal thickness, some counte-rplan are arranged at present, the more common first adopts special racetrack voice basin loudspeaker; Adopt the multi-thread circle of existing tiling to drive sound basin sounding, improve the LF-response of itself, this mode one comes loudspeaker design complicated; Cost is high, and poor for applicability, two come the effect improved and not obvious of its low frequency; Because the reason of the wavelength of the sound wave, particularly bass part of sound basin positive and negative, phase place is consistent basically on its size to make the sound wave that sound basin positive and negative sends; So can offset, this is the insoluble problem of loud speaker self; Other schemes have adopted slim audio amplifier, make the low-frequency sound wave that obtains with superimposed through modes such as labyrinth, phase-reversing tubes, to improve low-frequency effect.This type adopts the slim audio amplifier of modes such as labyrinth, phase-reversing tube that low frequency is improved; But still have the problem that it is difficult to go beyond: the effective thickness of loud speaker has been received restriction; The amplitude of its sound basin is therefore limited, and whole structure receives limited sound basin amplitude bigger, and low frequency performance promotes difficulty.
The utility model content
To the difficulty of above existing scheme lifting low frequency performance, the utility model proposes a kind of Ultrathin speaker, and its technical scheme is following:
A kind of Ultrathin speaker, it comprises:
One resonant cavity is fixed in the back cover of panel TV, and its thickness is less than its length and width; The inwall of this resonant cavity has at least one sound basin hole and at least one vibrating diaphragm hole; Said vibrating diaphragm hole is outside the said back cover back side;
Loudspeaker unit, its sound basin correspondence one by one load on said sound basin hole; And
The passive radiation unit has the passive type vibrating diaphragm, and correspondence places said vibrating diaphragm hole one by one;
Wherein, it is long-pending that the effective area of said passive type vibrating diaphragm is not less than effective sound pelvic surface of sacrum of said loudspeaker unit; The effective diameter of said passive type vibrating diaphragm is not less than the maximum ga(u)ge of said resonant cavity; Said loudspeaker unit, passive radiation unit and said resonant cavity keep sealing.
As some preferred persons of present technique scheme, adopt following scheme to realize:
In one preferred embodiment, said resonant cavity maximum ga(u)ge is less than said effective sound basin diameter.
In one preferred embodiment, said resonant cavity is arranged in a flat sound box bodies, and the said sound box bodies back side cooperates said back cover inner surface, and has the phonate hole that is communicated with said sound basin hole and vibrating diaphragm hole on the said back cover.
In one preferred embodiment, the back side of said resonant cavity is the inner surface of said back cover, and said sound basin hole, vibrating diaphragm hole all are positioned on the said back cover; Said passive radiation unit constitutes the part of said back cover.
In one preferred embodiment, said passive radiation unit comprises:
Said vibrating diaphragm hole is fixed and be matched with to one housing, this housing;
One elastic ring, the curved surface ring-type is connected between said vibrating diaphragm periphery and the housing inner edge.
Wherein said vibrating diaphragm, hard material, similar with said housing shape, be positioned at the middle section of said housing.
In one preferred embodiment, said sound basin hole and the tiling of said vibrating diaphragm hole distribute alternately in the said resonant cavity back side.
In one preferred embodiment, said vibrating diaphragm hole is an annular; Said sound basin hole is positioned at the annular central zone in said vibrating diaphragm hole.
In one preferred embodiment, said sound basin hole of tiling and vibrating diaphragm hole are filled in the back side of said resonant cavity.
In one preferred embodiment, said loudspeaker unit is positioned within the said resonant cavity, and the mode that adopts the back to load loads on said sound basin hole.In another preferred embodiment on this scheme basis, the opening in said sound basin hole and vibrating diaphragm hole is towards identical.
In one preferred embodiment, said loudspeaker unit is positioned at outside the said resonant cavity, and the mode that loads before adopting loads on said sound basin hole.
The beneficial effect that the utility model brings is:
1. the form of passive radiation unit matching resonant cavity and sealing effectiveness; Air and even passive type vibrating diaphragm in the resonant cavity become the relatively large load of loudspeaker unit; Make the passive type vibrating diaphragm to corresponding low frequency part generation resonance; Make the little amplitude of loudspeaker unit just can obtain good low-frequency resonant at passive type vibrating diaphragm place, the low-frequency effect of finally being improved significantly.
2. resonant cavity does not but have extra requirement to loudspeaker unit itself, and applicability is good.
3. sound basin hole and vibrating diaphragm hole directly utilize the scheme of phonate hole, make loudspeaker unit and passive radiation unit more near the back side outer wall of back cover, can obtain the amplitude space of bigger loud speaker and vibrating diaphragm, obtain better low-frequency effect.
4. tiling is filled in loudspeaker unit and passive radiation unit; Even make the passive radiation unit adopt the form of annular to surround loudspeaker unit; Can utilize the surface of sound box bodies substantially, promote the area of low-frequency vibration part, and can use general loudspeaker unit to realize.
Description of drawings
Embodiment is described further the utility model below in conjunction with accompanying drawing:
Fig. 1 is that the utility model embodiment one is applied to the generalized section in the panel TV back cover;
Fig. 2 is Fig. 1 embodiment front elevational schematic;
Fig. 3 is Fig. 1 embodiment amplification profile sketch map;
Fig. 4 is the utility model embodiment two generalized sections;
Fig. 5 is the utility model embodiment three generalized sections;
Fig. 6 is the utility model embodiment four front elevational schematic;
Fig. 7 is the utility model embodiment five front elevational schematic;
Fig. 8 is the utility model embodiment six front elevational schematic.
Embodiment
Embodiment one:
Fig. 1 is that the utility model embodiment one is applied to the generalized section in the panel TV back cover; Fig. 2 is Fig. 1 embodiment front elevational schematic; Fig. 3 is Fig. 1 embodiment amplification profile sketch map; Explain in conjunction with this three figure:
Wherein, passive type vibrating diaphragm 31 is square plane synthetic material, and its area is long-pending greater than effective sound pelvic surface of sacrum of loudspeaker unit 20; The effective diameter of this passive type vibrating diaphragm 31 is greater than the maximum ga(u)ge of resonant cavity 10; And loudspeaker unit 20, passive radiation unit 30 keep sealing with resonant cavity 10.Therefore; When loudspeaker unit 20 received audio signals; Its sound basin vibrates, thereby air in the resonant cavity 10 and even passive type vibrating diaphragm 31 just become the relatively large load of loudspeaker unit 20, make 31 pairs of corresponding low frequency part generation resonance of passive type vibrating diaphragm; Make loudspeaker unit 20 little amplitudes just can obtain good low-frequency resonant, the low-frequency effect of finally being improved significantly from phonate hole 4 at passive type vibrating diaphragm 31 places.It is thus clear that present embodiment utilizes passive radiation unit 20 to cooperate the form and the sealing effectiveness of resonant cavitys 10, make the low-frequency effect of whole audio amplifier can be very satisfactory.Overcome the deficiency of slim audio amplifier, on the other hand loudspeaker unit 20 itself has not but been had extra requirement.And resonant cavity 10 is positioned at independently sound box bodies 2, makes the whole sound box bodies can be independent with respect to back cover 1, the device of composition moduleization, and applicability is good, can cooperate the back cover 1 of different vendor well.
Embodiment two:
Fig. 4 is the utility model embodiment two generalized sections; For embodiment one, loudspeaker unit 20 its effective sound basin diameters of present embodiment make loudspeaker unit have bigger load greater than the maximum ga(u)ge of resonant cavity 10.Simultaneously resonant cavity 10 no longer is an audio amplifier intracorporeal space independently; But through audio amplifier lid 3 and back cover 1 common moulding; Make like this sound basin hole 11 and vibrating diaphragm hole 12 all directly with back cover 1 on phonate hole 4 realize multiplexing, thereby compare with embodiment one, loudspeaker unit 20 and passive radiation unit 30 are more near the back side outer wall of back cover 1; Can obtain the amplitude space of bigger loud speaker and vibrating diaphragm, obtain better low-frequency effect.In appearance, the passive type vibrating diaphragm 31 on the passive radiation unit 30 directly becomes the part of back cover 1, and this is to have utilized the intensive properties the subject of knowledge and the object of knowledge of vibrating diaphragm 31 to realize, because its material can be born bump suitable in the transportation and scraping.It is thus clear that present embodiment has optimized effect on thickness, increase vibratility adjustment on the one hand, further improve the low frequency audio, the thickness that sound box bodies is taken is suitably cut down.
Embodiment three:
Like Fig. 5, the utility model embodiment three generalized sections; Compare with embodiment two shown in Figure 4; The vibrating diaphragm hole 12 of its passive radiation unit 30 also is directly to place on the back cover 1; Resonant cavity 10 is by audio amplifier lid 3 and back cover 1 common moulding equally, and different is, sound basin hole 11 places on the resonant cavity opposite with respect to sound basin hole 12; And loudspeaker unit 20 loads on the mode that loads before adopt in sound basin hole 11, and its body is positioned at outside the resonant cavity.This is a kind of special occasion, and is all limited and can't hold the situation of loudspeaker unit 20 thickness in whole intra, can cover 3 rears according to audio amplifier, and the volume that a loudspeaker unit 20 is dodged out in the position of other devices of device interior gets final product.
Embodiment four:
Fig. 6 is the utility model embodiment four front elevational schematic; In the present embodiment four, the fixed form of loudspeaker unit 20 and passive radiation unit 30 and sound box bodies 2 is with embodiment one, thereby sound box bodies 2 independently assembled with respect to back cover then installing.Present embodiment four has adopted two loudspeaker units 20 as the active device, promotes a passive device passive radiation unit 30.Certainly, the effective area of its passive radiation unit vibrating diaphragm is greater than the sound basin effective area sum of two loudspeaker units 20.
Embodiment five:
Fig. 8 is the utility model embodiment six front elevational schematic.Compare with embodiment four, its fixed form is all identical, and different is that present embodiment adopts an initiatively device loudspeaker unit 20, promotes two large tracts of land passive radiation unit 30; The both sides of these passive radiation unit 30 apportion loudspeaker units 20.
Embodiment six:
Fig. 8 is the utility model embodiment six front elevational schematic.The above embodiments one, two, four and five; A common ground is arranged; Be that loudspeaker unit 20 all adopts the form of directly tiling to be distributed in the face of resonant cavity with passive radiation unit 30, but the passive radiation unit 30 of present embodiment six is to be a ring-type, surrounds the loudspeaker unit 20 of its middle section; And the two has taken whole of sound box bodies 2.So the characteristics that have of scheme are, have utilized the surface of sound box bodies 2 substantially, promote the area of low-frequency vibration part, and can use general loudspeaker unit 20 to realize.
The above; Be merely the utility model preferred embodiment; So can not limit the scope that the utility model is implemented according to this, the equivalence of promptly doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model contains.
Claims (11)
1. Ultrathin speaker, it is characterized in that: it comprises:
One resonant cavity is fixed in the back cover of panel TV, and its thickness is less than its length and width; The inwall of this resonant cavity has at least one sound basin hole and at least one vibrating diaphragm hole; Said vibrating diaphragm hole is outside the said back cover back side;
Loudspeaker unit, its sound basin correspondence one by one load on said sound basin hole; And
The passive radiation unit has the passive type vibrating diaphragm, and correspondence places said vibrating diaphragm hole one by one;
Wherein, it is long-pending that the effective area of said passive type vibrating diaphragm is not less than effective sound pelvic surface of sacrum of said loudspeaker unit; The effective diameter of said passive type vibrating diaphragm is not less than the maximum ga(u)ge of said resonant cavity; Said loudspeaker unit, passive radiation unit and said resonant cavity keep sealing.
2. according to the said a kind of Ultrathin speaker of claim 1, it is characterized in that: said resonant cavity maximum ga(u)ge is less than said effective sound basin diameter.
3. according to the said a kind of Ultrathin speaker of claim 1, it is characterized in that: said resonant cavity is arranged in a flat sound box bodies, and the said sound box bodies back side cooperates said back cover inner surface, and has the phonate hole that is communicated with said sound basin hole and vibrating diaphragm hole on the said back cover.
4. according to the said a kind of Ultrathin speaker of claim 1, it is characterized in that: the back side of said resonant cavity is the inner surface of said back cover, and said sound basin hole, vibrating diaphragm hole all are positioned on the said back cover; Said passive radiation unit constitutes the part of said back cover.
5. according to each said a kind of Ultrathin speaker in the claim 1 to 4, it is characterized in that: said passive radiation unit comprises:
Said vibrating diaphragm hole is fixed and be matched with to one housing, this housing;
One elastic ring, the curved surface ring-type is connected between said vibrating diaphragm periphery and the housing inner edge,
Wherein said vibrating diaphragm, hard material, similar with said housing shape, be positioned at the middle section of said housing.
6. according to the said a kind of Ultrathin speaker of claim 1, it is characterized in that: said sound basin hole and the tiling of said vibrating diaphragm hole distribute alternately in the said resonant cavity back side.
7. according to the said a kind of Ultrathin speaker of claim 1, it is characterized in that: said vibrating diaphragm hole is annular; Said sound basin hole is positioned at the annular central zone in said vibrating diaphragm hole.
8. according to the said a kind of Ultrathin speaker of claim 1, it is characterized in that: said sound basin hole of tiling and vibrating diaphragm hole are filled in the back side of said resonant cavity.
9. according to the said a kind of Ultrathin speaker of claim 1, it is characterized in that: said loudspeaker unit is positioned within the said resonant cavity, and the mode that adopts the back to load loads on said sound basin hole.
10. according to the said a kind of Ultrathin speaker of claim 1, it is characterized in that: said loudspeaker unit is positioned at outside the said resonant cavity, and the mode that loads before adopting loads on said sound basin hole.
11. according to the said a kind of Ultrathin speaker of claim 9, it is characterized in that: the opening in said sound basin hole and vibrating diaphragm hole is towards identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205726295U CN202406287U (en) | 2011-12-31 | 2011-12-31 | Ultrathin sound box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205726295U CN202406287U (en) | 2011-12-31 | 2011-12-31 | Ultrathin sound box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202406287U true CN202406287U (en) | 2012-08-29 |
Family
ID=46703899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205726295U Expired - Lifetime CN202406287U (en) | 2011-12-31 | 2011-12-31 | Ultrathin sound box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202406287U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102572638A (en) * | 2011-12-31 | 2012-07-11 | 李世煌 | Ultra-thin loudspeaker box for flat-panel televisions |
| CN103118313A (en) * | 2012-10-18 | 2013-05-22 | 中兴通讯股份有限公司 | Sound cavity, sound cavity system and mobile terminal |
-
2011
- 2011-12-31 CN CN2011205726295U patent/CN202406287U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102572638A (en) * | 2011-12-31 | 2012-07-11 | 李世煌 | Ultra-thin loudspeaker box for flat-panel televisions |
| CN103118313A (en) * | 2012-10-18 | 2013-05-22 | 中兴通讯股份有限公司 | Sound cavity, sound cavity system and mobile terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120829 |
|
| CX01 | Expiry of patent term |