CN205987233U - Audio amplifier acoustics structure - Google Patents
Audio amplifier acoustics structure Download PDFInfo
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- CN205987233U CN205987233U CN201620799657.3U CN201620799657U CN205987233U CN 205987233 U CN205987233 U CN 205987233U CN 201620799657 U CN201620799657 U CN 201620799657U CN 205987233 U CN205987233 U CN 205987233U
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- sound
- audio amplifier
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- pipe
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Abstract
The utility model discloses an audio amplifier acoustics structure. This audio amplifier acoustics structure includes box, speaker, pipe and baffle, wherein the speaker is located the box, the pipe lies in the speaker rear, and the pipe includes first open end, sound wave reflecting part and second open end, on the speaker is located to first opening end shield, the sound wave reflecting part be the acute angle with the contained angle of the incident direction of sound wave by speaker back radiation everywhere, the baffle lies in the second open end department of pipe, and the baffle separates into the independent sound chamber of inhaling with the inside cavity of box, be equipped with on the baffle with the through -hole of the second open end looks adaptation of pipe, the second open end of pipe is through inhaling sound chamber looks UNICOM inside through -hole and the box. The utility model discloses owing to set up the pipe that gets up the whole cover in speaker rear portion at the speaker rear, can make the orientation of sound wave after the pipe reflection of speaker back radiation can not be just in time opposite with the incident direction, inhale the sound chamber through final entering of multiple reflection later sound wave, effectively suppress the formation of standing wave.
Description
Technical field
The utility model is related to sound-box device field, particularly to audio amplifier acoustic construction.
Background technology
Standing wave is a kind of distribution that two kinds of ripples that frequency is identical, transmission direction is contrary are formed along transmission line, and standing wave exists
On waveform, the position of node and antinode is constant all the time, gives people to stay vertical motionless impression, therefore referred to as standing wave, its wink in fact
Duration changes over.In audio amplifier diaphragm of loudspeaker vibration not only can forward directed radiation sound wave, also can radiative acoustic wave backward,
Sound wave can form amplitude unanimously in some frequency ranges through cabinet wall reflection, and direction of vibration is consistent, the contrary reflection in the direction of propagation
Ripple, this ripple forms standing wave after being superimposed with incidence wave.Standing wave influences whether the flatness of the frequency response of audio amplifier, shows intermediate frequency
Section can produce peak valley, has a strong impact on the playback of sound.In order to eliminate the standing wave of audio amplifier it will usually in audio amplifier in existing technology
Sound-absorbing material is filled in portion, and this method also can cause to other effective frequency ranges to decay in elimination standing wave simultaneously, causes output effect
Rate reduces.
Utility model content
The purpose of this utility model be provide audio amplifier acoustic construction, can solve one of above-mentioned prior art problem or
Multiple.
According to one side of the present utility model, there is provided audio amplifier acoustic construction, including casing, loudspeaker, conduit and every
Plate；Wherein loudspeaker is located on casing；Conduit is located at loudspeaker rear, and conduit includes the first openend, sound wave reflecting part and the
Two openends, the first openend covers on loudspeaker, sound wave reflecting part everywhere with the sound wave by loudspeaker back side radiant
The angle of incident direction is acute angle；Dividing plate is located at the second openend of conduit, and the internal cavity of casing is divided into solely by dividing plate
Vertical sound absorption cavity, dividing plate is provided with the through hole being adapted with the second openend of conduit, and the second openend of conduit is passed through this and led to
Hole is connected with the sound absorption cavity of box house.
Standing wave is that the reflection sound wave producing due to the sound wave of loudspeaker back side radiant and after cabinet wall reflection is mutually folded
Plus produce, because the design of traditional audio amplifier is upright structure mostly, the Acoustic Wave Propagation direction that loudspeaker sends is interior with casing
Wall is vertical, therefore forms serious standing wave after reflection.The audio amplifier acoustic construction that the utility model provides, due to raising one's voice
Device rear is provided with the conduit that whole for loudspeaker rear portion cover gets up, and can avoid this shortcoming well, sound wave is anti-through conduit
Penetrating later direction will not be with incident direction contrast, and the sound wave after multiple reflections eventually enters into second with conduit
In the sound absorption cavity of the box house that openend is connected, thus can effectively eliminate standing wave.
In some embodiments, the internal diameter of the first openend of conduit is more than the internal diameter of the second openend.Using this kind of
Setting can effectively reduce the shared volume in box house cavity of conduit, increases the residual volume of conduit place cavity, right
In active audio amplifier particularly small Bluetooth audio amplifier, this some residual volume can be used to the parts such as placing battery, power board, reaches and fill
Divide the effect using box house cavity volume.
In some embodiments, conduit and casing junction can be sealed using encapsulant, and this encapsulant is excellent
Select glue.Thus, it is possible to guarantee conduit and the sealing of casing junction.
In some embodiments, conduit and dividing plate junction can be sealed using encapsulant, and this encapsulant is
It is well glue.Sealed by using glue, effectively can be prevented gap it is ensured that the box house being separated by dividing plate is each
The independence of individual cavity, strengthens the sound-absorbing effect of sound absorption cavity.
In some embodiments, catheter interior can layer overlay sound-absorbing material, this sound-absorbing material can be sponge.Thus lead to
Cross the sponge with sound absorption, increased the assimilation effect of standing wave.
In some embodiments, suction can be filled with the sound absorption cavity of the box house being connected with conduit second openend
Sound material, this sound-absorbing material can for chemical fibre, sponge, glass wool, mineral wool, wool, any one or above-mentioned material in cotton mixed
Compound, thus can effectively absorb standing wave.
Brief description
Fig. 1 is the schematic perspective view of the audio amplifier acoustic construction of the utility model one embodiment；
Fig. 2 is the top view of the audio amplifier acoustic construction of the utility model one embodiment.
Specific embodiment
Below in conjunction with the accompanying drawings the utility model is described in further detail.
Fig. 1 and Fig. 2 show schematically show the audio amplifier acoustic construction according to a kind of embodiment of the present utility model.As figure
Shown in 1 and 2, this audio amplifier acoustic construction includes casing 1, loudspeaker 2, conduit 3 and dividing plate 4.
Wherein loudspeaker 2 is located on casing 1, and conduit 3 is located at loudspeaker 2 rear, and conduit 3 includes the first openend 31, sound
Wave reflection portion 32 and the second openend 33, the first openend 31 covers on loudspeaker 2, sound wave reflecting part 32 everywhere with by raising
The angle of the incident direction of sound wave of sound device 2 back side radiant is acute angle.The volume of conduit 3 can be according to selected loudspeaker 2
Parameter is designed, and the radical of conduit 3 is identical with the number of loudspeaker 2, and that is, the rear of each loudspeaker 2 is furnished with a conduit 3.
Because whole for the rear portion of loudspeaker 2 cover is got up by conduit 3, the vibration spoke backward in front and back of loudspeaker 2 vibrating membrane can be prevented effectively from
The sound wave penetrated is reflected through the inwall of casing 1, and so that sound wave is reflected through the sound wave reflecting part 32 of conduit 3, due to
Sound wave reflecting part 32 be acute angle with the angle of the incident direction of the sound wave by loudspeaker 2 back side radiant everywhere, therefore incident
Ripple will not be parallel direction with the direction of back wave, such that it is able to effective generation reducing standing wave.
Dividing plate 4 is located at the second openend 33 of conduit 3, and the internal cavity of casing 1 is divided into independent sound absorption cavity by dividing plate 4
11, dividing plate 4 is provided with the through hole 41 being adapted with conduit 3, and the second openend 33 of conduit 3 is passed through in this through hole 41 and casing 1
The sound absorption cavity 11 in portion is connected.It is arranged on the conduit 3 at loudspeaker 2 rear portion, the sound wave that can make loudspeaker 2 back side radiant is through conduit
3 sound wave reflecting part 32 reflects later direction will not be with incident direction contrast, and the sound wave after multiple reflections is
In the sound absorption cavity 11 within casing 1 that second openend 33 of entrance and conduit 3 is connected eventually, thus can effectively suppress standing wave
Formation, simultaneously may also function as adjust audio amplifier low frequency effect.
As one kind preferably, the internal diameter of the first openend 31 of conduit 3 is more than the internal diameter of the second openend 33.Thus permissible
Effectively reduce the shared volume in casing 1 internal cavity of conduit 3, increase the residual volume of conduit 3 place cavity, for active
Audio amplifier particularly small Bluetooth audio amplifier, this some residual volume can be used to the parts such as placing battery, power board, reaches and make full use of
The effect of casing 1 internal cavity volume.
In order to ensure the sealing property of conduit 3 and casing 1 junction is it is ensured that the eradicating efficacy of standing wave, can adopt in this place
Sealed with encapsulant, can preferentially be selected the glue of low price and good sealing effect, by tying in conduit 3 and casing 1
Water a circle glue at conjunction, can effectively prevent the appearance in gap, it is to avoid the sound wave that loudspeaker 2 radiates backward passes through gap through case
Internal surface carries out reflecting to form standing wave.Additionally, conduit 3 and dividing plate 4 junction may also be employed encapsulant and sealed, this is close
Closure material is also preferably glue, by stamping a circle glue in conduit 3 with dividing plate 4 junction so that it may effective enhancing herein close
Sealing property, it is ensured that the independence of casing 1 each cavity internal being separated by dividing plate 4, strengthens the sound-absorbing effect of sound absorption cavity 11.
In order to increase the assimilation effect of standing wave, the inside of conduit 3 can be with layer overlay sound-absorbing material, and this sound-absorbing material is preferential
From low-cost sponge.Additionally, in sound absorption cavity 11 within the casing 1 being connected with the second openend 33 of conduit 3
Sound-absorbing material can be filled with, this sound-absorbing material can for chemical fibre, sponge, glass wool, mineral wool, wool, in cotton any one or on
State the mixture of material.Due to having a lot of apertures on sound-absorbing material, sound wave passes on sound-absorbing material, will cause aperture hole
In air and micro fiber vibration, due to inhibitions such as frictions, acoustic energy is converted to heat energy, and sound is therefore eliminated,
Thus can effectively eliminate standing wave.
Above-described is only some embodiments of the present utility model.For the person of ordinary skill of the art,
On the premise of creating design without departing from the utility model, some deformation can also be made and improve, these broadly fall into this practicality
New protection domain.
Claims (10)
1. audio amplifier acoustic construction is it is characterised in that include casing, loudspeaker, conduit and dividing plate；
Described loudspeaker is located on described casing；
Described conduit is located at described loudspeaker rear, and conduit includes the first openend, sound wave reflecting part and the second openend, described
First openend covers on described loudspeaker, described sound wave reflecting part everywhere with the sound wave by described loudspeaker back side radiant
The angle of incident direction be acute angle；
Described dividing plate is located at the second openend of described conduit, and the internal cavity of described casing is divided into independent sound-absorbing by dividing plate
Chamber, described dividing plate is provided with the through hole being adapted with the second openend of described conduit, and the second openend of conduit is by described
Through hole is connected with the sound absorption cavity of box house.
2. audio amplifier acoustic construction according to claim 1 is it is characterised in that the internal diameter of the first openend of described conduit is big
Internal diameter in the second openend.
3. audio amplifier acoustic construction according to claim 1 is it is characterised in that described conduit and described casing junction adopt
Encapsulant is sealed.
4. audio amplifier acoustic construction according to claim 3 is it is characterised in that described conduit and described casing junction adopt
Encapsulant be glue.
5. audio amplifier acoustic construction according to claim 1 is it is characterised in that described conduit and described dividing plate junction adopt
Encapsulant is sealed.
6. audio amplifier acoustic construction according to claim 5 is it is characterised in that described conduit and described dividing plate junction adopt
Encapsulant be glue.
7. audio amplifier acoustic construction according to any one of claim 1 to 6 is it is characterised in that described catheter interior is covered with
One layer of sound-absorbing material.
8. audio amplifier acoustic construction according to claim 7 is it is characterised in that the sound-absorbing material of described catheter interior laying is
Sponge.
9. audio amplifier acoustic construction according to any one of claim 1 to 6 is it is characterised in that fill in described sound absorption cavity
There is sound-absorbing material.
10. audio amplifier acoustic construction according to claim 9 it is characterised in that in described sound absorption cavity filling sound-absorbing material
Mixture for any one in chemical fibre, sponge, glass wool, mineral wool, wool, cotton or above-mentioned material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620799657.3U CN205987233U (en) | 2016-07-26 | 2016-07-26 | Audio amplifier acoustics structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620799657.3U CN205987233U (en) | 2016-07-26 | 2016-07-26 | Audio amplifier acoustics structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205987233U true CN205987233U (en) | 2017-02-22 |
Family
ID=58027760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620799657.3U Active CN205987233U (en) | 2016-07-26 | 2016-07-26 | Audio amplifier acoustics structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205987233U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110944273A (en) * | 2019-12-26 | 2020-03-31 | 中国华录集团有限公司 | Penetrating type phase-reversing tube and audio box |
| WO2022166095A1 (en) * | 2021-02-03 | 2022-08-11 | 深圳市大十科技有限公司 | Sound privacy protection device |
| CN116782069A (en) * | 2023-08-23 | 2023-09-19 | 深圳市锐豪科技有限公司 | Portable sound equipment that can make an uproar falls |
-
2016
- 2016-07-26 CN CN201620799657.3U patent/CN205987233U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110944273A (en) * | 2019-12-26 | 2020-03-31 | 中国华录集团有限公司 | Penetrating type phase-reversing tube and audio box |
| WO2022166095A1 (en) * | 2021-02-03 | 2022-08-11 | 深圳市大十科技有限公司 | Sound privacy protection device |
| CN116782069A (en) * | 2023-08-23 | 2023-09-19 | 深圳市锐豪科技有限公司 | Portable sound equipment that can make an uproar falls |
| CN116782069B (en) * | 2023-08-23 | 2023-11-14 | 深圳市锐豪科技有限公司 | Portable sound equipment that can make an uproar falls |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Industrial Road, Songshan Lake high tech Industrial Development Zone, Guangdong city of Dongguan province No. 6 523000 1 5 floor Patentee after: Jiahe intelligent Polytron Technologies Inc Address before: Industrial Road, Songshan Lake high tech Industrial Development Zone, Guangdong city of Dongguan province No. 6 523000 1 5 floor Patentee before: COSONIC ACOUSTIC TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |