CN206136250U - Two -sided extrusion formula radiates bar audio amplifier passively - Google Patents
Two -sided extrusion formula radiates bar audio amplifier passively Download PDFInfo
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- CN206136250U CN206136250U CN201621211627.2U CN201621211627U CN206136250U CN 206136250 U CN206136250 U CN 206136250U CN 201621211627 U CN201621211627 U CN 201621211627U CN 206136250 U CN206136250 U CN 206136250U
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- installing hole
- audio amplifier
- passive
- irradiator
- high pitch
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Abstract
The utility model discloses a two -sided extrusion formula radiates bar audio amplifier passively, this audio amplifier follow the radiant efficiency's of promotion speaker back sound wave angle, change into the radiation mode that two -sided extrusion is sprayed to the acoustic irradiation mode of passive radiation by original plane radiation mode novelty, can not utilize ordinary passive radiation fourth's area occupied, have realized the radiant efficiency of ordinary passive radiation twice. This kind of way is saved more areas and is given the initiative speaker on little volume audio amplifier, can use the initiative speaker of the most volumes of great bore, the utility model discloses a two -win effect of high sensitivity and good low frequency performance.
Description
Technical field
This utility model is related to audio amplifier, particularly relates to a kind of two-sided extrusion formula and passively radiates bar shaped audio amplifier.
Background technology
Audio amplifier application type and technical characteristic in the market is as follows：
1, independent audio amplifier audio amplifier (an integrated left side, right two sound channel)；
Such audio amplifier audio amplifier being used alone, as strip structure is limited, audio amplifier internal volume is less, and low frequency performance is one big
Weakness.The current preferable product of low frequency performance on the market, it has been limit water that its low-frequency minimum cut-off frequency Fb extends to 60Hz
It is flat.
2, audio amplifier audio amplifier+subwoofer；
As single audio amplifier is short of low frequency behavior, therefore the mode of audio amplifier audio amplifier+subwoofer is generated, be compensate for individually
The problem that audio amplifier low frequency is not enough, the but while subwoofer of heaviness takes up room larger, lose placement motility, on the other hand into
This is higher, and cost performance is relatively low.Independent audio amplifier audio amplifier low frequency behavior is not enough satisfied with, and increase subwoofer is relatively costly, lacks and installs spirit
Activity.It is that the design of man of all manufacturing factories is chased after how low frequency performance to be carried out in the audio amplifier of this small size of independent audio amplifier
The target asked.Prior art has following three kinds of ways this side up：
The first way：In the case of the audio amplifier constancy of volume, using the less speaker of bore and less speaker
Quantity, relative amplification tank-volumes (Vb) are humorous to obtain relatively low loudspeaker enclosure with the volumetric ratio of speaker equivalent volume (Vas)
Vibration frequency (Fb).The defect of this kind of way is to lose sensitivity to pursue compared with low resonant frequency.
Second way：Phase inverted cabinet is made using larger caliber speaker, but due to less tank-volumes (Vb),
Relatively low Fb must could be obtained using thin and length phase-reversing tube, phase-reversing tube cross-sectional area is too small will certainly to be caused in phase-reversing tube
Air velocity is higher, and air-flow produces noise with pipe friction.
The third way：Replace the way of phase-reversing tube with passive irradiator.Way of this way relative to phase-reversing tube is good
Place is the pneumatic noise without phase-reversing tube, but the efficiency of passive irradiator is lower than phase-reversing tube.The effect of passive irradiator is to allow
The anti-phase sound wave in the speaker back side makes phase transition 180 degree simultaneously by the resonance that air in audio amplifier constitutes agitator with passive irradiator
Radiate and be superimposed with the positive sound wave of speaker, increase low frequency performance.In order to lift the radiation efficiency of passive irradiator, it is necessary to
Increase the vibration area of passive irradiator, typically can be more than the big twice of the vibration area of active speaker.The defect of this kind of way
It is using area on active speaker and passive irradiator contention audio amplifier.If it is larger that active speaker accounts for area, passively
Irradiator low frequency radiation-efficiency is just reduced naturally, and low-frequency effect is just poor.If it is larger that passive irradiator accounts for area, then actively
Speaker swept area is reduced, that is to say, that must lose some sensitivity using more small-bore or small number of speaker.
The independent audio amplifier audio amplifier relatively small for volume, prior art way are difficult to avoid that down if selecting opening box
The mutually pneumatic noise in pipe, such as selects common passive irradiator audio amplifier, then be difficult to take into account active speaker and passive irradiator
Swept area leads to not balanced sensitivity and the performance of low frequency performance, can only be shifting.
Utility model content
For deficiency of the prior art, the technical problems to be solved in the utility model there are provided a kind of two-sided extrusion
Formula passively radiates bar shaped audio amplifier, and the audio amplifier is extruded the air in narrow gap, made by parallel biplane vibrating diaphragm Relative Vibration
In gap, air flow accelerates, the radiative acoustic wave in the way of spraying, so as to greatly promote the efficiency of acoustic radiation.
To solve above-mentioned technical problem, this utility model is realized by following utility model：A kind of two-sided extrusion formula quilt
Dynamic radiation bar shaped audio amplifier, the audio amplifier include main box, netted cover plate and the woofer being placed in main tank body, tweeter
Device, panel, also including passive irradiator, the passive irradiator includes plastic rubber bracket, two passive vibrating diaphragms, square plates, institute
State plastic rubber bracket to be square, two opposite flank and top surface perforate, two passive vibrating diaphragms are arranged on opening for two opposite flanks
Kong Shang, top surface tapping fix square plate；
The main box is in bar shaped, its both sides end face opening, lid left cap, right cap respectively at opening, the main box
Seal between front and rear panel and base plate, in the upper end sounding face of main box, be provided with woofer installing hole, high pitch loudspeaker peace
Dress hole, passive irradiator installing hole, panel installing hole, the woofer installing hole are adjacent with passive irradiator installing hole
Arrange, high pitch loudspeaker installing hole is arranged on the upper and lower of sounding face, the woofer installing hole is installed bass and raised
Sound device, high pitch loudspeaker installing hole install high pitch loudspeaker, and passive irradiator installing hole installs passive irradiator, the passive spoke
The square plate face of emitter upward, is contacted with extraneous air, and the upper end sounding face of main box is stamped netted cover plate.
Further, the panel installing hole is circular hole, and which is arranged in the middle part of main box sounding face, is pacified at the circular hole
Circular hole is covered by dress panel, panel, in panel lower surface, is connected with power board.
Further, the woofer installing hole, high pitch loudspeaker installing hole, passive irradiator installing hole are set respectively
4,4,2 are equipped with, 10 installing holes are symmetrical arranged with panel installing hole, from panel installing hole towards main box side
Portion be successively passive irradiator installing hole, woofer installing hole, passive irradiator installing hole, woofer installing hole,
High pitch loudspeaker installing hole.
Further, the woofer, passive irradiator, high pitch loudspeaker are both provided with 4, wherein tweeter
Device is 2 one group, in 2 high pitch loudspeaker installing holes.
Further, string holes is provided with the middle part of the left cap, line traffic control union joint is installed in string holes, the line traffic control union joint
Outer end cylinder outer wall is provided with groove, and line traffic control union joint is connected with L-type installation foot by groove.
Further, power supply connecting hole is provided with the middle part of the right cap, power connector is installed on power supply connecting hole,
The power connector outer end cylinder outer wall is provided with groove, and power connector is connected with L-type installation foot by groove.
Further, the main box is aluminum trombone slide, and which is integrally formed, and is arranged in the front and rear panel and backplate surface of aluminum trombone slide
There are horizontal asperities.
Relative to prior art, the beneficial effects of the utility model are：This utility model is from lifting speaker back side sound wave
The angle of radiation efficiency set out, the acoustic irradiation mode of passive irradiator is changed into by original planar radiation mode novelty
The radiation mode of two-sided extrusion injection, using the area occupied less than common passive irradiator a quarter, realizes commonly quilt
The radiation efficiency of dynamic irradiator twice.This kind of way saves more areas on small size audio amplifier and gives active speaker,
The greater number of active speaker of larger caliber, this utility model can be used to realize high sensitivity and excellent low frequency performance
Doulbe-sides' victory effect.This utility model technical characteristic is as follows：
1. independent audio amplifier, strip structure audio amplifier；
2. 4 square woofers and 4 high pitch loudspeakers are used；
3. using the passive irradiator assembly of four groups of two-sided extrusion formulas, altogether using 8 passive vibrating diaphragms；
4. passive irradiator extrudes the air in narrow gap, makes gap by parallel biplane vibrating diaphragm Relative Vibration
Interior air flow accelerates, the radiative acoustic wave in the way of spraying, so as to greatly promote the efficiency of acoustic radiation.
Description of the drawings
Fig. 1 is this utility model audio amplifier explosive view；
Fig. 2 is this utility model audio amplifier assembling figure；
Fig. 3 is the passive irradiator explosive view of this utility model；
Fig. 4 is the passive irradiator assembling figure of this utility model；
Fig. 5 is the passive irradiator sectional view of this utility model.
Labelling in accompanying drawing：Netted cover plate 1, woofer 2, panel 3, high pitch loudspeaker 4, square plate 5, passive vibrating diaphragm
6th, plastic rubber bracket 7, power board 8, line traffic control union joint 9, left cap 11, main box 12, right cap 13, power connector 14, passive
Irradiator 100.
Specific embodiment
Below in conjunction with the accompanying drawings preferred embodiment of the present utility model is described in detail, so that advantage of the present utility model
Can be easier to be readily appreciated by one skilled in the art with feature, it is apparent clear and definite so as to make to protection domain of the present utility model
Define.
Accompanying drawing 1～5 is refer to, a kind of two-sided extrusion formula of the present utility model passively radiates bar shaped audio amplifier, and the audio amplifier includes
Main box 12, netted cover plate 1 and the woofer 2 being placed in main box 12, high pitch loudspeaker 4, panel 3, also include by
Dynamic irradiator 100, the passive irradiator 100 include plastic rubber bracket 7, two passive vibrating diaphragm 6, square plate 5, the plastic rubber bracket
7 are square, two opposite flank and top surface perforate, and two passive vibrating diaphragms 6 are arranged in the perforate of two opposite flanks, top surface
Tapping fixes square plate 5；The main box 12 is in bar shaped, its both sides end face opening, lid left cap 11, right side respectively at opening
Lid 13, seals between 12 front and rear panel of the main box and base plate, in the upper end sounding face of main box 12, is provided with woofer
Installing hole, high pitch loudspeaker installing hole, passive irradiator installing hole, panel installing hole, the woofer installing hole with
Passive irradiator installing hole is disposed adjacent, and high pitch loudspeaker installing hole is arranged on the upper and lower of sounding face, and the bass is raised
Sound device installing hole installs woofer 2, and high pitch loudspeaker installing hole installs high pitch loudspeaker 4, passive irradiator installing hole peace
Passive irradiator 100 is filled, the square plate face of the passive irradiator 100 is contacted with extraneous air upward, the upper end of main box 12
Sounding face is stamped netted cover plate 1.
The panel installing hole is circular hole, and which is arranged in the middle part of 12 sounding face of main box, at the circular hole installs control
Circular hole is covered by plate 3, panel 3, in 3 lower surface of panel, is connected with power board 8.The woofer installing hole, high pitch
Speaker installing hole, passive irradiator installing hole are respectively arranged with 4,4,2, and 10 installing holes are with panel installing hole pair
Claim to arrange, be passive irradiator installing hole, woofer installation successively from panel installing hole towards 12 side end of main box
Hole, passive irradiator installing hole, woofer installing hole, high pitch loudspeaker installing hole.The woofer 2, passive spoke
Emitter 100, high pitch loudspeaker 4 are both provided with 4, and its medium and high pitch loudspeaker 4 is 2 one group, installed in 2 high pitch loudspeaker peaces
In dress hole.String holes is provided with the middle part of the left cap 11, line traffic control union joint 9 is installed in string holes, the 9 outer newel post of line traffic control union joint
External wall is provided with groove, and line traffic control union joint 9 is connected with L-type installation foot 11 by groove.It is provided with the middle part of the right cap 13
Power supply connecting hole, is provided with power connector 14 on power supply connecting hole, 14 outer end cylinder outer wall of the power connector is provided with
Groove, power connector 14 are connected with L-type installation foot 11 by groove.The main box 12 is aluminum trombone slide, and which is integrally formed,
The front and rear panel and backplate surface of aluminum trombone slide is provided with horizontal asperities.
As shown in figure 5, this utility model audio amplifier is the passive irradiator audio amplifier of two-sided extrusion formula, woofer 2 is for actively
Speaker, active speaker back side vibrating diaphragm promote air is produced in audio amplifier the space velocity air resonance in the audio amplifier, and then
The passive vibrating diaphragm of two opposite sets of inside cavity is promoted to produce vibration Ud, Uf, two relative passive vibrating diaphragms extrude narrow sky
In gap, air forms the jet-impingement of high volume speed Up and goes out, and gives off sound wave.As passive vibrating diaphragm is vertically mounted on
Inside audio amplifier, so the area occupied of very little is only needed on audio amplifier surface, be relatively specific for small size audio amplifier, and passive vibrating diaphragm
Area can do greatly, and be that two-sided vibrating diaphragm area is double, just can effectively inside cavity using less linear amplitude
The conduct vibrations of air are gone out, and, due to directly connecting with audio amplifier ambient atmosphere, distance is very short for two-sided vibrating diaphragm intermediate gaps, and tube wall is produced
Raw acoustic resistance can almost be ignored.Therefore higher space velocity can be produced gives off low-frequency sound wave.
Preferred implementation of the present utility model is the foregoing is only, patent model of the present utility model is not thereby limited
Enclose, equivalent structure or equivalent flow conversion that every utilization this utility model description and accompanying drawing content are made, or directly or
Connect and be used in other related technical fields, be included in the same manner in scope of patent protection of the present utility model.
Claims (7)
1. a kind of two-sided extrusion formula passively radiates bar shaped audio amplifier, and the audio amplifier includes main box (12), netted cover plate (1) and is placed in master
Woofer (2), high pitch loudspeaker (4) in casing (12), panel (3), it is characterised in that：Also include passive irradiator
(100), the passive irradiator (100) includes plastic rubber bracket (7), two passive vibrating diaphragms (6), square plates (5), the plastic cement
Frame (7) is square, two opposite flank and top surface perforate, perforate of two passive vibrating diaphragms (6) installed in two opposite flanks
On, top surface tapping fixes square plate (5)；
The main box (12) in bar shaped, its both sides end face opening, lid left cap (11), right cap (13) respectively at opening, institute
State main box (12) to seal between front and rear panel and base plate, in the upper end sounding face of main box (12), be provided with woofer peace
Dress hole, high pitch loudspeaker installing hole, passive irradiator installing hole, panel installing hole, the woofer installing hole and quilt
Dynamic irradiator installing hole is disposed adjacent, and high pitch loudspeaker installing hole is arranged on the upper and lower of sounding face, the bass loudspeaker
Device installing hole installs woofer (2), and high pitch loudspeaker installing hole installs high pitch loudspeaker (4), passive irradiator installing hole
Passive irradiator (100) is installed, the square plate face of the passive irradiator (100) is contacted with extraneous air, main box upward
(12) upper end sounding face is stamped netted cover plate (1).
2. a kind of two-sided extrusion formula according to claim 1 passively radiates bar shaped audio amplifier, it is characterised in that：The panel
Installing hole is circular hole, and which is arranged in the middle part of main box (12) sounding face, and panel (3) is installed at the circular hole, and panel (3) will
Circular hole is covered, and in panel (3) lower surface, is connected with power board (8).
3. a kind of two-sided extrusion formula according to claim 1 passively radiates bar shaped audio amplifier, it is characterised in that：The bass is raised
Sound device installing hole, high pitch loudspeaker installing hole, passive irradiator installing hole are respectively arranged with 4,4,2,10 installing holes
It is symmetrical arranged with panel installing hole, is that passive irradiator is installed successively from panel installing hole towards main box (12) side end
Hole, woofer installing hole, passive irradiator installing hole, woofer installing hole, high pitch loudspeaker installing hole.
4. a kind of two-sided extrusion formula according to claim 3 passively radiates bar shaped audio amplifier, it is characterised in that：The bass is raised
Sound device (2), passive irradiator (100), high pitch loudspeaker (4) are both provided with 4, and its medium and high pitch loudspeaker (4) is 2 one group,
In 2 high pitch loudspeaker installing holes.
5. a kind of two-sided extrusion formula according to claim 1 passively radiates bar shaped audio amplifier, it is characterised in that：The left cap
(11) string holes is provided with the middle part of, line traffic control union joint (9) is installed in string holes, line traffic control union joint (9) the outer end cylinder outer wall is arranged
There is groove, line traffic control union joint (9) is connected with L-type installation foot (11) by groove.
6. a kind of two-sided extrusion formula according to claim 1 passively radiates bar shaped audio amplifier, it is characterised in that：The right cap
(13) power supply connecting hole is provided with the middle part of, power connector (14), the power connector (14) is installed on power supply connecting hole
Outer end cylinder outer wall is provided with groove, and power connector (14) is connected with L-type installation foot (11) by groove.
7. a kind of two-sided extrusion formula according to claim 1～6 any one passively radiates bar shaped audio amplifier, and its feature exists
In：The main box (12) is aluminum trombone slide, and which is integrally formed, and is provided with the front and rear panel and backplate surface of aluminum trombone slide laterally concavo-convex
Stricture of vagina.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621211627.2U CN206136250U (en) | 2016-11-09 | 2016-11-09 | Two -sided extrusion formula radiates bar audio amplifier passively |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621211627.2U CN206136250U (en) | 2016-11-09 | 2016-11-09 | Two -sided extrusion formula radiates bar audio amplifier passively |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206136250U true CN206136250U (en) | 2017-04-26 |
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ID=58578559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621211627.2U Active CN206136250U (en) | 2016-11-09 | 2016-11-09 | Two -sided extrusion formula radiates bar audio amplifier passively |
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| Country | Link |
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| CN (1) | CN206136250U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107948907A (en) * | 2017-11-28 | 2018-04-20 | 苏州佳世达光电有限公司 | Passive radiant panel and preparation method |
| CN109275064A (en) * | 2018-09-30 | 2019-01-25 | 联想(北京)有限公司 | Speaker and control method applied to speaker |
| CN109327761A (en) * | 2018-11-14 | 2019-02-12 | 缪东雷 | A kind of composite wave low frequency booster and its sound equipment, low frequency boosting method |
| CN109996147A (en) * | 2017-12-31 | 2019-07-09 | 宁波升亚电子有限公司 | Low frequency generating device and low frequency generating apparatus and its application |
-
2016
- 2016-11-09 CN CN201621211627.2U patent/CN206136250U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107948907A (en) * | 2017-11-28 | 2018-04-20 | 苏州佳世达光电有限公司 | Passive radiant panel and preparation method |
| CN107948907B (en) * | 2017-11-28 | 2020-11-27 | 苏州佳世达光电有限公司 | Passive radiating plate and preparation method thereof |
| CN109996147A (en) * | 2017-12-31 | 2019-07-09 | 宁波升亚电子有限公司 | Low frequency generating device and low frequency generating apparatus and its application |
| CN109996147B (en) * | 2017-12-31 | 2021-08-06 | 宁波升亚电子有限公司 | Low-frequency generating device and low-frequency generating equipment and application thereof |
| CN109275064A (en) * | 2018-09-30 | 2019-01-25 | 联想(北京)有限公司 | Speaker and control method applied to speaker |
| CN109327761A (en) * | 2018-11-14 | 2019-02-12 | 缪东雷 | A kind of composite wave low frequency booster and its sound equipment, low frequency boosting method |
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