CN204425603U - Double resonator audio amplifier - Google Patents
Double resonator audio amplifier Download PDFInfo
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- CN204425603U CN204425603U CN201420868049.4U CN201420868049U CN204425603U CN 204425603 U CN204425603 U CN 204425603U CN 201420868049 U CN201420868049 U CN 201420868049U CN 204425603 U CN204425603 U CN 204425603U
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- resonant cavity
- low frequency
- audio amplifier
- casing
- guide pipe
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Abstract
The utility model discloses a kind of double resonator audio amplifier, comprise the casing being provided with guide pipe and the first resonant cavity, the Low frequency horn be arranged in casing first resonant cavity, described Low frequency horn opening is towards outside casing; It is characterized in that: in described casing, be provided with the second resonant cavity, between described second resonant cavity and described first resonant cavity, be provided with the dividing plate being with through hole, be provided with passive radiator in through hole, described second resonant cavity communicates with described guide pipe.The beneficial effects of the utility model: volume is little, the audio amplifier that improves low frequency signal scope, can not produce noise because Low frequency horn power increases.
Description
Technical field
The utility model relates to technology for loudspeaker box field.
Background technology
Along with the high speed development of science and technology, audio amplifier is as the terminal of whole sound system, and its effect is that audio frequency electric energy is converted to corresponding acoustic energy, and it is radiated space.Audio amplifier is the extremely important part of sound system, the signal of telecommunication is transformed into acoustical signal directly listens to this mission critical because which is responsible for the ear of people.In prior art, in order to make, the expansion low-frequency range of audio amplifier is wider, the sense of low frequency amount is better, a guide pipe communicated with the external world is installed in usual meeting additional in the cavity with bass Low frequency horn, thus increase the fabric width of audio bass, what the sound effect of audio amplifier was done is better; But because audio amplifier cavity space is limited, when increasing Low frequency horn power, because the Oscillation Amplitude of bass Low frequency horn increases, air vibration amplitude is caused to increase, the air velocity of discharging from guide pipe increases, easily because gas current friction produces noise, affect tonequality on the contrary, thus small size audio amplifier cannot be realized use powerful Low frequency horn.
Utility model content
The technical problems to be solved in the utility model is to provide the double resonator audio amplifier that a kind of volume is little, improve low frequency signal scope, can not produce noise because Low frequency horn power increases.
Technical solution of the present utility model is: a kind of double resonator audio amplifier, and comprise the casing being provided with guide pipe and the first resonant cavity, the Low frequency horn be arranged in casing first resonant cavity, described Low frequency horn opening is towards outside casing; In described casing, be provided with the second resonant cavity, be provided with the dividing plate being with through hole, be provided with passive radiator in through hole between described second resonant cavity and described first resonant cavity, described second resonant cavity communicates with described guide pipe.
First resonant cavity and the second resonant cavity two resonant cavities are set, and passive radiator is set between two resonant cavities, guide pipe is communicated with the second resonant cavity, make Low frequency horn operationally, the airstream vibration that low frequency signal promotes in the first resonant cavity produces resonance, air-flow promotes passive radiator vibration again and secondary resonance occurs, thus make the speed of air-flow be able to slow down for twice and the power of loudspeaker unit can corresponding lifting and can not produce noise, when ensureing audio amplifier constancy of volume, further increase the low frequency signal scope of output.
The air passage outlet direction of described guide pipe is consistent with described Low frequency horn opening direction.Guide pipe air passage outlet is consistent with Low frequency horn opening direction, makes the Signal averaging exported from low frequency signal and the Low frequency horn of guide pipe output, low frequency signal intensity is increased, increases radiation areas.
Described passive radiator comprises vibrating diaphragm and is arranged on the ring at vibrating diaphragm edge, and described ring is connected with the sidewall of described dividing plate.Ring is fixedly connected with dividing plate, and vibrating diaphragm is relatively unsettled, and vibration is not easily interfered.Ring adopts bonding or presses or be first bonded in mode and described vibrating diaphragm that transition piece presses and described dividing plate fixes again, and achieves location and the free-extension of vibrating diaphragm.
Described vibrating diaphragm is circular arc or corrugated.Can accommodating more large-area vibrating diaphragm in limited space, effectively improve the tuning effect of passive radiation.
The utility model relative to its beneficial effect of prior art is: the audio amplifier the utility model with same volume increases Low frequency horn power and there will not be noise, and low frequency acoustic energy can be extended further.
Accompanying drawing explanation
The cutaway view of Fig. 1 the utility model embodiment;
Description of reference numerals: 1-casing, 2-Low frequency horn, 3-first resonant cavity, 4-second resonant cavity, 5-dividing plate, 6-through hole, 7-guide pipe, 8-passive radiator, 81-vibrating diaphragm, 82-ring.
Embodiment
Embodiment:
Consult Fig. 1, a kind of double resonator audio amplifier, comprise the casing 1 being provided with guide pipe 7 and the first resonant cavity 3, the Low frequency horn 2 be arranged in casing 1 first resonant cavity 3, Low frequency horn 2 opening is towards outside casing; The second resonant cavity 4 is provided with in casing 1, the dividing plate 5 being with through hole 6 is provided with between the second resonant cavity 4 and the first resonant cavity 3, at through hole 6, place is provided with passive radiator 8, and the second resonant cavity 4 communicates with guide pipe 7, and the air passage outlet of guide pipe 7 is consistent with Low frequency horn 2 opening direction.Passive radiator 8 comprises vibrating diaphragm 81 and is arranged on the ring 82 at vibrating diaphragm 81 edge, and ring 82 is connected with the sidewall of dividing plate 5.Vibrating diaphragm 81 is circular arc or corrugated.
When Low frequency horn 2 works, the voice coil loudspeaker voice coil of Low frequency horn 2 and cone resonance promote the airstream vibration in the first resonant cavity 3, the vibrating diaphragm 81 of the air propels passive radiator 8 of vibration vibrates, the vibration of vibrating diaphragm 81 drives the air-flow in the second cavity 4 that second time resonance occurs, then the air velocity of the second cavity 4 is less than the air velocity in the first cavity 3, and the low frequency signal simultaneously in the second cavity 4 is expanded relative to the low frequency signal low-frequency range in the first cavity 3; Low frequency signal in second cavity 4 is by adjusting caliber and the length of guide pipe 7, make the frequency of the signal exported from guide pipe 7 lower, air velocity is slower, then when increasing the power of Low frequency horn, from guide pipe Exhaust Gas flow velocity because two-stage resonance slows down, can not produce noise because of friction, the tonequality when increasing low frequency power is ensured; Guide pipe 7 air passage outlet is identical with Low frequency horn 2 Way out, and the low frequency signal that Low frequency horn 2 is produced superposes with the low frequency signal in the second cavity 4, and low frequency signal intensity is increased, therefore its radiation scope increases, and sound field scope is wider
Above-listed detailed description is illustrating for the utility model possible embodiments, and this embodiment is also not used to limit the scope of the claims of the present utility model, does not allly depart from the equivalence that the utility model does and implements or change, and all should be contained in the scope of the claims of this case.
Claims (4)
1. a double resonator audio amplifier, comprise the casing being provided with guide pipe and the first resonant cavity, the Low frequency horn be arranged in casing first resonant cavity, described Low frequency horn opening is towards outside casing, it is characterized in that: in described casing, be provided with the second resonant cavity, the dividing plate being with through hole is provided with between described second resonant cavity and described first resonant cavity, be provided with passive radiator in through hole, described second resonant cavity communicates with described guide pipe.
2. double resonator audio amplifier according to claim 1, is characterized in that, the air passage outlet direction of described guide pipe is consistent with described Low frequency horn opening direction.
3. double resonator audio amplifier according to claim 1 and 2, is characterized in that, described passive radiator comprises vibrating diaphragm and is arranged on the ring at vibrating diaphragm edge, and ring is connected with the sidewall of described dividing plate.
4. double resonator audio amplifier according to claim 3, is characterized in that, the vertical cross-section of described vibrating diaphragm is circular arc or corrugated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420868049.4U CN204425603U (en) | 2014-12-30 | 2014-12-30 | Double resonator audio amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420868049.4U CN204425603U (en) | 2014-12-30 | 2014-12-30 | Double resonator audio amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204425603U true CN204425603U (en) | 2015-06-24 |
Family
ID=53475928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420868049.4U Active CN204425603U (en) | 2014-12-30 | 2014-12-30 | Double resonator audio amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204425603U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105916076A (en) * | 2016-06-01 | 2016-08-31 | 深圳市赛音电子有限公司 | Air-flow guiding sound equipment |
| CN108337598A (en) * | 2018-03-06 | 2018-07-27 | 东莞市扎克电子科技有限公司 | A kind of speaker and its resonator equipped with resonator |
| WO2019019323A1 (en) * | 2017-07-28 | 2019-01-31 | 歌尔股份有限公司 | Loudspeaker module and electronic apparatus |
-
2014
- 2014-12-30 CN CN201420868049.4U patent/CN204425603U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105916076A (en) * | 2016-06-01 | 2016-08-31 | 深圳市赛音电子有限公司 | Air-flow guiding sound equipment |
| WO2019019323A1 (en) * | 2017-07-28 | 2019-01-31 | 歌尔股份有限公司 | Loudspeaker module and electronic apparatus |
| CN108337598A (en) * | 2018-03-06 | 2018-07-27 | 东莞市扎克电子科技有限公司 | A kind of speaker and its resonator equipped with resonator |
| CN108337598B (en) * | 2018-03-06 | 2024-08-16 | 东莞市扎克电子科技有限公司 | Sound box with resonator and resonator thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |