CN207166735U - A kind of audio amplifier for reducing casing vibration - Google Patents
A kind of audio amplifier for reducing casing vibration Download PDFInfo
- Publication number
- CN207166735U CN207166735U CN201721060159.8U CN201721060159U CN207166735U CN 207166735 U CN207166735 U CN 207166735U CN 201721060159 U CN201721060159 U CN 201721060159U CN 207166735 U CN207166735 U CN 207166735U
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- CN
- China
- Prior art keywords
- voice coil
- casing
- vibration
- audio amplifier
- coil loudspeaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model provides a kind of audio amplifier for reducing casing vibration, and it includes a casing, and casing is provided with the sound basin hole of a loading loudspeaker unit；The loudspeaker unit includes sound basin, dust cover and the voice coil loudspeaker voice coil being coaxially disposed, and the audio, dust cover and voice coil loudspeaker voice coil form vibration unit；The one end of the voice coil loudspeaker voice coil away from sound basin, provided with the vibrating balancer coaxial with voice coil loudspeaker voice coil, the vibrating balancer is identical with the vibration frequency of vibration unit, after being vibrated for balance vibration unit, caused reverse momentum in casing.The utility model provides a kind of audio amplifier, and the vibration of its casing is smaller, and casing is made into very thick and heavy without the vibration in order to avoid casing, adds the portability of audio amplifier.
Description
Technical field
It the utility model is related to a kind of audio amplifier.
Background technology
When the air in magnetic speaker or guide pipe in sound box bodies vibrates under big energy, inevitably make
Audio amplifier has reverse momentum, makes casing that violent vibration occur, and makes casing mass part that unwanted resonance occur and make sound
Sound output is colored distortion；Based on this, sound box bodies are made solid and heavy, are the effective schemes for solving this problem, but
Directly conflict with its portability.
Utility model content
Technical problem underlying to be solved in the utility model is to provide a kind of audio amplifier, and the vibration of its casing is smaller, no
Casing is made very thick and heavy with the vibration in order to avoid casing, adds the portability of audio amplifier.
In order to solve above-mentioned technical problem, the utility model provides a kind of audio amplifier for reducing casing vibration, and it is included
One casing, casing are provided with the sound basin hole of a loading loudspeaker unit；The loudspeaker unit includes the sound being coaxially disposed
Basin, dust cover and voice coil loudspeaker voice coil, the audio, dust cover and voice coil loudspeaker voice coil form vibration unit；The one end of the voice coil loudspeaker voice coil away from sound basin, is provided with
The coaxial vibrating balancer with voice coil loudspeaker voice coil, the vibrating balancer is identical with the vibration frequency of vibration unit, for balance vibration
After unit vibration, caused reverse momentum in casing.
In a preferred embodiment：The vibrating balancer includes permanent magnet, vibrating body；The vibrating body produces after being powered
Raw magnetic field and the magnetic field interaction of permanent magnet so that vibrating body axially vibrates, and the direction vibrated and voice coil loudspeaker voice coil are anti-
To.
In a preferred embodiment：When the vibration frequency of the voice coil loudspeaker voice coil can cause casing to vibrate, the vibrating body is powered.
In a preferred embodiment：The sense of current applied to the vibrating body identical or phase with voice coil loudspeaker voice coil sense of current
Instead.
Compared to prior art, the technical solution of the utility model has the advantages that：
The utility model provides a kind of audio amplifier for reducing casing vibration, and by setting vibrating balancer, the vibration is put down
Magnitude of vibrations, the frequency of weighing apparatus device and voice coil loudspeaker voice coil are all identical and direction of vibration is on the contrary, after for balancing the vibration of voice coil loudspeaker voice coil 13, are produced in casing
Raw reverse momentum.So casing would not produce resonance because of voice coil loudspeaker voice coil, solve the problems, such as casing vibration well, so as to
The casing that casing need not be made to very thick and heavy, frivolous can still produce good sound, will not be produced because casing vibrates
Raw sound coloration distortion.
The utility model provides a kind of audio amplifier for reducing casing and vibrating, because the vibration of casing can be reduced, therefore can
To design the audio amplifier of very big casing, but casing is again very frivolous.This scheme is impossible in existing loudspeaker box structure
Realize, the larger loudspeaker of fit size in the prior art, casing it is sufficiently bulky, weight is also very heavy.
Brief description of the drawings
Fig. 1 is the structure sectional view of the utility model preferred embodiment.
Embodiment
The technical solution of the utility model is further detailed below by way of embodiment combination accompanying drawing and
Description.
With reference to figure 1, a kind of audio amplifier for reducing casing vibration, (it is not shown comprising a casing on figure), casing is provided with one and added
Carry the sound basin hole of loudspeaker unit 1；
The loudspeaker unit 1 includes the sound basin 11, dust cover 12 and the voice coil loudspeaker voice coil 13 that are coaxially disposed, the sound basin 11,
Dust cover 12 and voice coil loudspeaker voice coil 13 collectively form vibration unit；The described one end of voice coil loudspeaker voice coil 13 away from sound basin 11, provided with coaxial with voice coil loudspeaker voice coil 13
Vibrating balancer 2, the vibrating balancer 2 is identical with the vibration frequency of vibration unit, for balance vibration unit vibrate
Afterwards, caused reverse momentum in casing.So casing would not produce resonance because vibration unit vibrates, and solve well
The problem of casing vibrates, can still produce good sound, no without casing is made into very thick and heavy, frivolous casing
Sound coloration distortion can be produced because casing vibrates.
In the present embodiment, the vibrating balancer 2 includes permanent magnet 21, vibrating body 22；After the vibrating body 22 is powered
The magnetic field interaction of caused magnetic field and permanent magnet 21 so that vibrating body 22 axially vibrates, and the direction vibrated with
Voice coil loudspeaker voice coil 13 is reverse.In fact, the present embodiment use is exactly another voice coil loudspeaker voice coil.It so can easily accomplish that two voice coil loudspeaker voice coils shake
It is dynamic in opposite direction, amplitude is consistent with frequency.
In addition, the vibrating body 22 can not have to all produce under any circumstance and the vibration in opposite direction of voice coil loudspeaker voice coil 13, only
Have when the vibration frequency of the voice coil loudspeaker voice coil 13 can cause casing to vibrate, the vibrating body 22 is just powered vibration.It can so reduce
The frequency of use of vibrating body, save electric energy.
The sense of current and the sense of current of voice coil loudspeaker voice coil 13 applied to the vibrating body 22 is identical or opposite.This depends on raising
The magnetic pole of the permanent magnet of sound device unit is identical or opposite with the magnetic pole of the permanent magnet 21 of vibrating balancer.
It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model discloses
Change or replacement, should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should
It is defined by scope of the claims.
Claims (4)
- A kind of 1. audio amplifier for reducing casing vibration, it is characterised in that：It includes a casing, and casing is provided with a loading loudspeaker list The sound basin hole of member；The loudspeaker unit includes sound basin, dust cover and the voice coil loudspeaker voice coil being coaxially disposed, sound basin, dust cover and the sound Circle forms vibration unit；The one end of the voice coil loudspeaker voice coil away from sound basin, provided with the vibrating balancer coaxial with voice coil loudspeaker voice coil, the vibration balancing Device is identical with the vibration frequency of vibration unit, after being vibrated for balance vibration unit, caused reverse momentum in casing.
- A kind of 2. audio amplifier for reducing casing vibration according to claim 1, it is characterised in that：The vibrating balancer bag Include permanent magnet, vibrating body；The magnetic field interaction of caused magnetic field and permanent magnet after the vibrating body is powered so that vibrating body edge Axial vibration, and the direction vibrated and voice coil loudspeaker voice coil are reverse.
- A kind of 3. audio amplifier for reducing casing vibration according to claim 2, it is characterised in that：When the vibration frequency of the voice coil loudspeaker voice coil When rate can cause the casing to vibrate, the vibrating body is powered.
- A kind of 4. audio amplifier for reducing casing vibration according to claim 3, it is characterised in that：The vibrating body is applied The sense of current is identical or opposite with voice coil loudspeaker voice coil sense of current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721060159.8U CN207166735U (en) | 2017-08-23 | 2017-08-23 | A kind of audio amplifier for reducing casing vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721060159.8U CN207166735U (en) | 2017-08-23 | 2017-08-23 | A kind of audio amplifier for reducing casing vibration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207166735U true CN207166735U (en) | 2018-03-30 |
Family
ID=61717581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721060159.8U Active CN207166735U (en) | 2017-08-23 | 2017-08-23 | A kind of audio amplifier for reducing casing vibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207166735U (en) |
-
2017
- 2017-08-23 CN CN201721060159.8U patent/CN207166735U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |