CN204425601U - A kind of audio amplifier - Google Patents
A kind of audio amplifier Download PDFInfo
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- CN204425601U CN204425601U CN201420856660.5U CN201420856660U CN204425601U CN 204425601 U CN204425601 U CN 204425601U CN 201420856660 U CN201420856660 U CN 201420856660U CN 204425601 U CN204425601 U CN 204425601U
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- cavity
- low frequency
- guide pipe
- audio amplifier
- hole
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Abstract
The utility model discloses a kind of audio amplifier, comprise the first cavity being provided with Low frequency horn, the second cavity being provided with high-frequency horn, and the guide pipe to be communicated with the first cavity, described first cavity communicates with described second cavity, a sidewall of described second cavity is provided with the first through hole communicated with described guide pipe, in the first through hole, is provided with the first passive radiator.The beneficial effects of the utility model: by the first cavity is communicated with the second cavity, low frequency signal air-flow is made not only to reduce speed, and add low frequency signal width, first cavity is separated into the 3rd cavity and the 4th cavity takes full advantage of the volume of audio amplifier and again slow down air velocity, can improve the power of Low frequency horn accordingly and there will not be noise.
Description
Technical field
The utility model relates to technology for loudspeaker box field, particularly a kind of loudspeaker box structure.
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 better, and usually can install a guide pipe communicated with the external world additional in the cavity with bass 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 loudspeaker power, required audio amplifier space can be caused to increase, and the volume of audio amplifier is excessive, uses inconvenience; In addition because the Oscillation Amplitude of bass horn increases, air vibration amplitude can be caused to increase, the air velocity of discharging from guide pipe increases, and easily because gas current friction produces noise, affects tonequality on the contrary.
Utility model content
The technical problems to be solved in the utility model is to provide and a kind ofly makes full use of box volume, can use more powerful Low frequency horn and there will not be the audio amplifier of noise in same volume.
Technical solution of the present utility model is: a kind of audio amplifier, comprise the first cavity being provided with Low frequency horn, the second cavity being provided with high-frequency horn, and the guide pipe to be communicated with the first cavity, described first cavity communicates with described second cavity, a sidewall of described second cavity is provided with the first through hole communicated with described guide pipe, in the first through hole, is provided with the first passive radiator.
The first cavity being provided with Low frequency horn and the second cavity being provided with high-frequency horn are interconnected, make the low frequency signal in the first cavity can enter the second cavity, impel the high-frequency signal in the second cavity and low frequency signal generation resonance, reduce air velocity, then can the power of corresponding raising Low frequency horn; Also form the low frequency signal of more wide region simultaneously; The sidewall of the second cavity is equiped with the first passive radiator to make the low frequency signal be in the second cavity promote the first passive radiator vibrating diaphragm to vibrate, the frequency of low frequency signal is reduced further, make the low frequency signal exported obtain the second level to expand, also slow down air velocity further simultaneously.
In described first cavity, be provided with the dividing plate of band second through hole, the first cavity is divided into the 3rd cavity and the 4th cavity by dividing plate, is provided with the second passive radiator in the second through hole, and the 4th cavity communicates with described guide pipe.
First cavity is divided into the 3rd cavity and the 4th cavity by the dividing plate with through hole be arranged in the first cavity, makes full use of box volume and the speed of air-flow is slowed down; Through hole arranges the second passive radiator, make the low frequency signal in the 3rd cavity promote the second passive radiator to vibrate, thus drive the air in the 4th cavity to vibrate, by the adjustment of different counterweight, make the vibrate air in the 4th cavity can more low frequency and the second passive radiator resonate, namely the vibrate air frequency in the 4th cavity is lower, and the low frequency signal width range outputting to guide pipe is wider.
The air passage outlet of described guide pipe is identical with described Low frequency horn opening direction.
Guide pipe air passage outlet is identical with Low frequency horn opening direction, the low frequency signal exported is superposed with the low frequency signal that Low frequency horn produces, make the intensity of low frequency signal larger from guide pipe
The beneficial effects of the utility model are: the first cavity and the second cavity are interconnected, and make high-frequency signal and low frequency signal generation resonance, air velocity slows down; The while that the first passive radiator that second cavity is arranged making low frequency signal expand further, air velocity slows down again, namely can improve the power of Low frequency horn accordingly, also can not produce noise.First cavity is become the 3rd cavity and the 4th cavity by baffle for separating, dividing plate is arranged the second passive radiator, utilizes audio amplifier volume to carry out the flow slowing down of low frequency signal more fully, increases the increase of low frequency signal width range.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the utility model embodiment.
Reference numeral: 1-first cavity, 2-second cavity, 3-the 3rd cavity, 4-the 4th cavity, 5-guide pipe, 11-high-frequency horn, 21-Low frequency horn, 22-first passive radiator, 23-through hole, 24-second passive radiator.
Embodiment
Embodiment:
Consult Fig. 1, a kind of audio amplifier, comprise the first cavity 1 being provided with Low frequency horn 11, be provided with the second cavity 2 of high-frequency horn 21, and the guide pipe 5 to be communicated with the first cavity 1, first cavity 1 communicates with the second cavity 2, a sidewall of the second cavity 2 is provided with the first through hole communicated with guide pipe 5, the first passive radiator 22 is provided with in the first through hole, the dividing plate of band second through hole is provided with in the first cavity 1, first cavity 1 is divided into the 3rd cavity 3 and the 4th cavity 4 by dividing plate, the second passive radiator 24 is provided with in the second through hole, 4th cavity 4 communicates with guide pipe 5.The air passage outlet of guide pipe 5 is identical with Low frequency horn 21 opening direction.
When high-frequency horn 21 and Low frequency horn 11 work, the resonance of the cone on it promotes the airstream vibration in the second cavity 2 and the 3rd cavity 3 respectively, an air-flow part in 3rd cavity 3 enters the second cavity 2 and high-frequency air flow generation resonance, low frequency signal is increased, then promote the first passive radiator 22 and resonance again occurs, the signal producing more low frequency makes that low frequency width is corresponding to be expanded; Another part air-flow in 3rd cavity 3, promote the second passive radiator 24 to vibrate, thus generation resonance, produce lower than the air-flow frequency in the 3rd cavity 3, same low frequency width is expanded, and then export from guide pipe 5 with exporting after the air-flow of deriving mixes from the first passive radiator 22, the opening direction of guide pipe 5 is identical with the opening of Low frequency horn 21, low frequency signal is superposed, low frequency signal intensity is increased.
Above-listed detailed description is illustrating for one of the utility model possible embodiments, this embodiment is also not used to limit the scope of the claims of the present utility model, allly do not depart from the equivalence that the utility model does and implement or change, all should be contained in the scope of the claims of this case.
Claims (3)
1. an audio amplifier, comprise the first cavity being provided with Low frequency horn, the second cavity being provided with high-frequency horn, and the guide pipe to be communicated with the first cavity, it is characterized in that, described first cavity communicates with described second cavity, a sidewall of described second cavity is provided with the first through hole communicated with described guide pipe, in the first through hole, is provided with the first passive radiator.
2. a kind of audio amplifier according to claim 1, it is characterized in that, be provided with the dividing plate of band second through hole in described first cavity, the first cavity is divided into the 3rd cavity and the 4th cavity by dividing plate, in the second through hole, be provided with the second passive radiator, the 4th cavity communicates with described guide pipe.
3. a kind of audio amplifier according to claim 1 and 2, is characterized in that, the air passage outlet of described guide pipe is identical with described Low frequency horn opening direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420856660.5U CN204425601U (en) | 2014-12-30 | 2014-12-30 | A kind of audio amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420856660.5U CN204425601U (en) | 2014-12-30 | 2014-12-30 | A kind of audio amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204425601U true CN204425601U (en) | 2015-06-24 |
Family
ID=53475926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420856660.5U Active CN204425601U (en) | 2014-12-30 | 2014-12-30 | A kind of audio amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204425601U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107547991A (en) * | 2016-06-24 | 2018-01-05 | 宏碁股份有限公司 | Loudspeaker and electronic device using same |
| CN110022509A (en) * | 2017-12-25 | 2019-07-16 | 雅马哈株式会社 | Loudspeaker structure |
| CN111510801A (en) * | 2019-05-22 | 2020-08-07 | 汉得利（常州）电子股份有限公司 | Miniature loudspeaker sound box with ultra-thin and ultra-low frequency structure |
-
2014
- 2014-12-30 CN CN201420856660.5U patent/CN204425601U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107547991A (en) * | 2016-06-24 | 2018-01-05 | 宏碁股份有限公司 | Loudspeaker and electronic device using same |
| US10368161B2 (en) | 2016-06-24 | 2019-07-30 | Acer Incorporated | Amplifier and electronic device using the same |
| CN107547991B (en) * | 2016-06-24 | 2020-06-05 | 宏碁股份有限公司 | Loudspeaker and electronic device using same |
| CN110022509A (en) * | 2017-12-25 | 2019-07-16 | 雅马哈株式会社 | Loudspeaker structure |
| JP7069699B2 (en) | 2017-12-25 | 2022-05-18 | ヤマハ株式会社 | Speaker structure |
| CN111510801A (en) * | 2019-05-22 | 2020-08-07 | 汉得利（常州）电子股份有限公司 | Miniature loudspeaker sound box with ultra-thin and ultra-low frequency structure |
| CN111510801B (en) * | 2019-05-22 | 2021-03-12 | 汉得利（常州）电子股份有限公司 | Miniature loudspeaker sound box with ultra-thin and ultra-low frequency structure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |