CN205005218U - Passive compression audio amplifier of two -sided balance - Google Patents
Passive compression audio amplifier of two -sided balance Download PDFInfo
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- CN205005218U CN205005218U CN201520700294.9U CN201520700294U CN205005218U CN 205005218 U CN205005218 U CN 205005218U CN 201520700294 U CN201520700294 U CN 201520700294U CN 205005218 U CN205005218 U CN 205005218U
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- passive radiation
- audio amplifier
- radiation loudspeaker
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Abstract
The utility model provides a passive compression audio amplifier of two -sided balance, be in including closed box and setting the initiative speaker of box one end, still include: first passive radiation speaker sets up the box is kept away from one side of the other end of initiative speaker, the second radiates the speaker passively, sets up the relative opposite side of first passive radiation speaker, the air compression pipeline sets up in the box, will the box is separated to become initiative speaker cavity and is radiated the speaker cavity passively, wherein, the cone vibrations of initiative speaker drive air current measured time in the box, the process the air of air compression pipeline obtains with higher speed, promotes first passive radiation speaker, the second radiates the speaker passively and moves. The utility model discloses eliminate the sound short circuit, reached the low frequency effect that has promoted little audio amplifier through the two -sided passive vibrations that radiate the speaker of compressed air drive.
Description
Technical field
The utility model relates to sound system technical field, particularly relates to a kind of two plane balancing passive compression formula audio amplifier.
Background technology
Along with the high speed development of information technology, hyundai electronics electric equipment products volume is more and more less.Television set also enters the ultra-thin epoch, and make built-in speaker be tending towards miniaturized, cause sound worse and worse, especially LF-response is poor, sounds that sound is very thin, makes user can not get due audio-visual appreciation and enjoys.
Existing small-size sound box generally comprises monomer loud speaker, phase inverted cabinet and closed audio amplifier etc. with simple casing sound chamber.But monomer loud speaker is not owing to overcoming acoustic short circuit problem, so low frequency does not almost have, single loudspeaker are difficult to take into account senior middle school's low frequency, so sound is very dull, distortion is large, weak effect.Phase inverted cabinet distortion with simple casing sound chamber makes moderate progress, but due to the size restrictions of phase-reversing tube, so efficiency is lower, low-frequency effect is improved little.The distortion of closed audio amplifier is lower, but owing to not utilizing the sound wave at loud speaker back, so efficiency is lower, resonance frequency is higher, and low-frequency effect is not good.
Therefore, need to improve the small-size sound box of prior art, to overcome acoustic short circuit problem, in less volume, send the replaying bass level of better quality, promote the low-frequency effect of small-size sound box.
Utility model content
The purpose of this utility model is to provide a kind of two plane balancing passive compression formula audio amplifier, on the basis not changing audio amplifier volume, overcomes acoustic short circuit problem, promotes the low-frequency effect of small-size sound box.
To achieve these goals, the utility model provides a kind of two plane balancing passive compression formula audio amplifier, comprises closed casing and the active loud speaker being arranged on described casing one end; Also comprise: the first passive radiation loudspeaker, be arranged on the side of described casing away from the other end of described active loud speaker; Second passive radiation loudspeaker, is arranged on the relative opposite side of described first passive radiation loudspeaker; Air compressing pipeline, is arranged in casing, described casing is separated into initiatively speaker chamber and passive radiation loudspeaker cavity; Wherein, in the described casing of cone vibrations drive of described active loud speaker during air flowing, the air through described air compressing pipeline is accelerated, and promotes the first passive radiation loudspeaker, the second passive radiation loudspeaker motion.
The utility model has the advantage of, eliminate the acoustic short circuit of TV on-board speaker sound wave, reach by the vibrations of the two-sided passive radiation loudspeaker of compressed air-driven the low-frequency effect improving little audio amplifier; Without the need to adjusting the size of casing, the replaying bass level sending better quality in the audio amplifier of existing smaller size smaller can be realized.
Accompanying drawing explanation
Fig. 1, the front view of two plane balancing passive compression formula audio amplifier one execution mode described in the utility model;
The rearview of Fig. 2, Fig. 1 illustrated embodiment.
Embodiment
Elaborate below in conjunction with the embodiment of accompanying drawing to the two plane balancing passive compression formula audio amplifier that the utility model provides.
With reference to Fig. 1-2, wherein, Fig. 1 is the front view of two plane balancing passive compression formula audio amplifier one execution mode described in the utility model; Fig. 2 is the rearview of Fig. 1 illustrated embodiment.Described two plane balancing passive compression formula audio amplifier comprises: comprise closed casing 10, initiatively loud speaker 11, first passive radiation loudspeaker 12, second passive radiation loudspeaker 13 and air compressing pipeline 14.
Described casing 10 seals completely itself, to prevent inner air from leaking, maintains internal high pressure.
Described active loud speaker 11 is arranged on one end of described casing 10, and its size bore adaptability is comparatively wide, preferably, adopts small-bore active speaker effect better.In the present embodiment, the vibrating diaphragm shape of described active loud speaker 11 adopts circular, and its vibrating diaphragm shape also can be track type or other shapes in other embodiments.
Described first passive radiation loudspeaker 12 is arranged on the side of described casing 10 away from the other end of described active loud speaker 11.Described second passive radiation loudspeaker 13 is arranged on the relative opposite side of described first passive radiation loudspeaker 12.First, second passive radiation loudspeaker is used to adjust bass, to regulate the tone color of audio amplifier entirety.Meanwhile, also can eliminate the disturbance of casing air-flow, eliminate the acoustic short circuit of loud speaker sound wave.Passive sounding is carried out under active loud speaker is to the drive of air in casing.The lowest resonant frequency Fb of whole audio amplifier depends primarily on the area of two passive radiation loudspeakers, weight and compliance, by adjusting the above-mentioned parameter of two passive radiation loudspeakers, the i.e. lowest resonant frequency Fb of adjustable audio amplifier, thus regulate the tonequality compared with small box, make it have the performance of better bass.
As optional execution mode, the passive radiation loudspeaker 13 of the first passive radiation loudspeaker 12, second all adopts rubber to hang limit and iron plate vibrating diaphragm.In the present embodiment, the vibrating diaphragm shape of the passive radiation loudspeaker 13 of the first passive radiation loudspeaker 12, second is track type, and both vibrating diaphragm shapes also can be circular or other shapes in other embodiments.
The gross area of the passive radiation loudspeaker 13 of the first passive radiation loudspeaker 12, second is greater than the effective radiating area of described active loud speaker 11.Preferably, the gross area of the passive radiation loudspeaker 13 of the first passive radiation loudspeaker 12, second is 1.3-4 times of the effective radiating area of described active loud speaker 11, thus while initiatively loud speaker 11 vibrations can promote two passive radiation loudspeaker work in guarantee, efficiency can not be caused lower.The gross area of two passive radiation loudspeakers causes efficiency low with the too small meeting of multiple proportion value of active loud speaker effective radiating area, and too conference causes initiatively loud speaker vibrations cannot promote two passive radiation loudspeaker work.
Air compressing pipeline 14 is arranged in casing 10, described casing 10 is separated into initiatively speaker chamber 15 and passive radiation loudspeaker cavity 16.In the described casing 10 of cone vibrations drive of described active loud speaker 11 during air flowing, air through described air compressing pipeline 14 is accelerated, promote the passive radiation loudspeaker 13 of the first passive radiation loudspeaker 12, second to move, thus adjustment bass is to regulate the tone color of audio amplifier entirety, effectively solve the design challenges of miniature internal audio amplifier LF-response difference.Problems such as avoiding traditional closed audio amplifier and phase inverted cabinet needs when index adjusts to adjust the size of casing or phase-reversing tube, thus need the amendment relating to mould, exist costly, the construction cycle is long.
Be limited to enclosure size, described air compressing pipeline 14 is the shape that both ends open 141 diameter is greater than the narrow air flue in centre of middle air flue 142 diameter, during to make that in casing, gas is by air flue 142, is fully accelerated.
Below provide the operation principle of two plane balancing passive compression formula audio amplifier described in the utility model, to be further explained the utility model.
1, initiatively loud speaker 11 cone vibrations, drive air flowing in casing 10, promote the passive radiation loudspeaker 13 of the first passive radiation loudspeaker 12, second and work.
2, when active loud speaker 11 cone inwardly moves, the air initiatively in speaker chamber 15 is delivered to passive radiation loudspeaker cavity 16 through middle narrower air compressing pipeline 14.Accelerated at air in air compressing pipeline 14, obtain the air after accelerating and enter in passive radiation loudspeaker cavity 16, the passive radiation loudspeaker promoting both sides outwards moves, and promotes the air sounding outside case.
3, when active loud speaker 11 cone outwards moves, under the atmospheric effect in outside, the air in passive radiation loudspeaker cavity 16 is delivered to initiatively speaker chamber 15 through middle narrower air compressing pipeline 14.Accelerated at air in air compressing pipeline 14, obtain the air after accelerating and enter in active speaker chamber 15, under external pressure effect, the passive radiation loudspeaker of both sides inwardly moves, and promotes the air sounding in case.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (7)
1. a two plane balancing passive compression formula audio amplifier, comprises closed casing and the active loud speaker being arranged on described casing one end, it is characterized in that, also comprise,
First passive radiation loudspeaker, is arranged on the side of described casing away from the other end of described active loud speaker;
Second passive radiation loudspeaker, is arranged on the relative opposite side of described first passive radiation loudspeaker;
Air compressing pipeline, is arranged in casing, described casing is separated into initiatively speaker chamber and passive radiation loudspeaker cavity;
Wherein, in the described casing of cone vibrations drive of described active loud speaker during air flowing, the air through described air compressing pipeline is accelerated, and promotes the first passive radiation loudspeaker, the second passive radiation loudspeaker motion.
2. two plane balancing passive compression formula audio amplifier according to claim 1, it is characterized in that, the first passive radiation loudspeaker, the second passive radiation loudspeaker all adopt rubber to hang limit and iron plate vibrating diaphragm.
3. two plane balancing passive compression formula audio amplifier according to claim 1, is characterized in that, the vibrating diaphragm shape of the first passive radiation loudspeaker, the second passive radiation loudspeaker is circular or track type.
4. two plane balancing passive compression formula audio amplifier according to claim 1, is characterized in that, the vibrating diaphragm shape of described active loud speaker is circular or track type.
5. two plane balancing passive compression formula audio amplifier according to claim 1, it is characterized in that, the gross area of the first passive radiation loudspeaker, the second passive radiation loudspeaker is greater than the effective radiating area of described active loud speaker.
6. two plane balancing passive compression formula audio amplifier according to claim 5, is characterized in that, the gross area of the first passive radiation loudspeaker, the second passive radiation loudspeaker be the 1.3-4 of the effective radiating area of described active loud speaker doubly.
7. two plane balancing passive compression formula audio amplifier according to claim 1, it is characterized in that, the both ends open diameter of described air compressing pipeline (14) is greater than middle airway diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520700294.9U CN205005218U (en) | 2015-09-10 | 2015-09-10 | Passive compression audio amplifier of two -sided balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520700294.9U CN205005218U (en) | 2015-09-10 | 2015-09-10 | Passive compression audio amplifier of two -sided balance |
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| Publication Number | Publication Date |
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| CN205005218U true CN205005218U (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520700294.9U Expired - Fee Related CN205005218U (en) | 2015-09-10 | 2015-09-10 | Passive compression audio amplifier of two -sided balance |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106028233A (en) * | 2016-05-18 | 2016-10-12 | 李世煌 | Acoustic structure equipped with passive diaphragm units |
| CN106658276A (en) * | 2017-02-28 | 2017-05-10 | 北京奇虎科技有限公司 | Robot sound and robot |
| CN109040914A (en) * | 2017-06-08 | 2018-12-18 | 深圳纽斯声学系统有限公司 | A kind of car audio system based on symmetrical balance bass box |
| WO2019101161A1 (en) * | 2017-11-24 | 2019-05-31 | 苏州逸巛声学科技有限公司 | Sound producing device |
| CN111372162A (en) * | 2018-12-25 | 2020-07-03 | 深圳纽斯声学系统有限公司 | No-opening surface-mounted ultrathin ceiling sound box |
-
2015
- 2015-09-10 CN CN201520700294.9U patent/CN205005218U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106028233A (en) * | 2016-05-18 | 2016-10-12 | 李世煌 | Acoustic structure equipped with passive diaphragm units |
| CN106658276A (en) * | 2017-02-28 | 2017-05-10 | 北京奇虎科技有限公司 | Robot sound and robot |
| CN109040914A (en) * | 2017-06-08 | 2018-12-18 | 深圳纽斯声学系统有限公司 | A kind of car audio system based on symmetrical balance bass box |
| WO2019101161A1 (en) * | 2017-11-24 | 2019-05-31 | 苏州逸巛声学科技有限公司 | Sound producing device |
| US11223897B2 (en) | 2017-11-24 | 2022-01-11 | Suzhou Yichuan Technology Co., Ltd. | Sound producing device |
| CN111372162A (en) * | 2018-12-25 | 2020-07-03 | 深圳纽斯声学系统有限公司 | No-opening surface-mounted ultrathin ceiling sound box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160127 Termination date: 20190910 |
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| CF01 | Termination of patent right due to non-payment of annual fee |