CN105142049B - A kind of audio amplifier - Google Patents
A kind of audio amplifier Download PDFInfo
- Publication number
- CN105142049B CN105142049B CN201510624524.2A CN201510624524A CN105142049B CN 105142049 B CN105142049 B CN 105142049B CN 201510624524 A CN201510624524 A CN 201510624524A CN 105142049 B CN105142049 B CN 105142049B
- Authority
- CN
- China
- Prior art keywords
- loudspeaker
- audio amplifier
- electromagnet
- support
- magnet
- 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.)
- Expired - Fee Related
Links
- 230000005291 magnetic effect Effects 0.000 claims description 27
- 239000003566 sealing material Substances 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 230000004907 flux Effects 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims 1
- 238000013016 damping Methods 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Landscapes
- Details Of Audible-Bandwidth Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The present invention relates to sound system technical field, more particularly to a kind of audio amplifier.Loudspeaker is suspended by the audio amplifier using electromagnet, and preferable in bottom plate and top plate setting perforated plate vibration damping sound-absorbing, this audio amplifier resonance sound timbre that is smaller and sending.
Description
Technical field
The present invention relates to sound system technical field, more particularly to a kind of audio amplifier.
Background technology
Audio amplifier is last in whole sound system flow and a most important composition, and its playing quality is to whole
The influence of individual systematic function is very big, estimates according to professional person, and contribution of the audio amplifier to whole sound system accounts for whole system
More than 30%.
Audio amplifier includes the fine or not shadow to tonequality of voice box casing, loudspeaker and frequency divider, loudspeaker and frequency divider in itself
Sound accounts for 70%, and influence of the voice box casing to tonequality accounts for 30%, because loudspeaker has a great influence with frequency divider to tonequality,
Prior art most people are to improve loudspeaker and frequency divider, and few people go to improve voice box casing.
But voice box casing also has a very big impact to the tonequality of audio amplifier, wherein most important influence is audio amplifier resonance,
Again because the frame of loudspeaker is mainly fastened on the front panel of voice box casing by the loudspeaker of prior art by screw, i.e.,
Frame is directly to be contacted with front panel, so when vibration caused by speaker operation can be direct by supporting constructions such as frame
It is delivered on the front panel of voice box casing, and then voice box casing is resonated, also there are some audio amplifiers by support by loudspeaker
It is fixed on other panels, can directly transfers vibrations on panel fixed thereto during such speaker operation so that sound
Tank shell resonates so that the sound timbre that audio amplifier is sent is poor；The acoustic pressure of also voice box casing accumulated inside also can
Directly excitation voice box casing vibrates, and it is poor that this also results in the sound timbre that audio amplifier is sent.
The content of the invention
The technical problems to be solved by the invention are：A kind of resonance preferable sound of sound timbre that is smaller and sending is provided
Case.
The technical solution adopted in the present invention is：A kind of audio amplifier, including controller, voice box casing and loudspeaker, it is described
Voice box casing includes bottom plate, top plate and side plate, and the side plate includes front panel, rear board, left panel and right panel, described
Front panel is provided with a through hole to match with loudspeaker, it is characterised in that：The loudspeaker is provided with magnet, and described raises one's voice
It is provided between device and magnet made of NULL every being equipped with use on magnetosphere, the left panel, right panel, bottom plate and top plate
In the electromagnet of absorption magnet, each electromagnet is provided with a magnetic field sensor for being used for induced field Strength Changes, described
Electromagnet and magnetic field sensor are electrically connected with the controller, and also close by flexible sealing material between loudspeaker and front panel
Sealing is determined, and the bottom plate be provided with one be used for when electromagnet does not work support speaker support, the bottom plate with
And perforated plate is equipped with the inside of top plate, and the perforated plate forms cavity, and the perforated plate and top plate with bottom plate and side plate
And side plate forms cavity,
When work of electromagnet, loudspeaker can suspend in the presence of electromagnetic force, not acted between loudspeaker and support
Power；When electromagnet is stopped, loudspeaker position does not change, but loudspeaker can be withstood support by support.
The mass component of the NULL is
Fe2O3100 parts；
BaO 40-50 parts；
SrO 35-40 parts；
La 0.5-1 parts；
Co 2-3 parts.
The center of the support is provided with a flux bore passed through for magnetic force caused by the electromagnet on bottom plate.
The flexible sealing material is foam seal ring and glass cement.
The loudspeaker includes shell and the frame that is arranged on outside shell, and the magnet is shell-like, and the magnet set
It is located at outside shell.
Described every magnetosphere is shell-like, and described to be set in every magnetosphere on shell, the magnet is set in every on magnetosphere.
The pedestal upper end face is provided with pressure sensor, and the pressure sensor is electrically connected with the controller.
Rigid Porous sound-absorption vibration-reduction structure is provided with the cavity.
Using above technical scheme compared with prior art, the present invention has advantages below：By electromagnet by loudspeaker
Suspend, such loudspeaker only has annexation by the front panel of flexible sealing material and voice box casing, i.e., caused by loudspeaker
Vibration is delivered on voice box casing without going past the part being directly connected to, and can be only delivered to by flexible material on front panel,
So passing to past vibration can be substantially reduced by flexible material, so when speaker operation voice box casing will not occur altogether
Shake, the sound timbre that such audio amplifier is sent is preferable, and detects magnetic field using magnetic field sensor, so can preferably control and raise
Sound device suspend when stability so that loudspeaker suspend when be not easy to shake, and between magnet and loudspeaker be provided with every
It magnetosphere, so can effectively prevent the magnetic field that electromagnet is formed from influenceing the work of loudspeaker in itself, and a support is set,
So when not being powered, i.e., when electromagnet does not work, the function of support speaker, and electricity can be played by support
During magnet power on/off, the position of loudspeaker is constant, i.e., is powered off suddenly in electromagnet, i.e., loudspeaker from suspended state be changed into according to
By speaker damage will not be caused because there is range difference during support holding state.And it is provided with and wears on bottom plate and top plate
Orifice plate, and perforated plate forms cavity with bottom plate and top plate, and so this structure can be very good the work(for reaching sound-absorption vibration-reduction
Can, the sound wave of voice box casing accumulated inside can be absorbed well, reduces the pressure of these sound waves formation, and then reduces voice box casing
Resonance so that the sound timbre that audio amplifier is sent is preferable.
It is and preferable using the NULL of this component composition, magnetism isolating effect.
The heart sets a flux bore in the bracket, can so prevent because of support stop and on influence caused by magnetic field.
Loudspeaker and front panel sealing are fixed using foam seal ring and glass cement, so not only seal fixed effect
Preferably, and the vibration that loudspeaker passes over can be substantially reduced.
Magnet is made into shell-like, preferably can so be coordinated with multiple electromagnet so that stress compares when loudspeaker suspends
Uniformly.
Shell-like will be made every magnetosphere, and can preferably play separated magnetic effect.
One pressure sensor is set on support, so when speaker operation, pressure sensor has detected pressure,
Then represent that loudspeaker does not suspend completely, can now control corresponding electromagnet loudspeaker completely outstanding by controller
It is floating.
Rigid Porous sound-absorption vibration-reduction structure is set in cavity, so can preferably absorb the sound accumulated in voice box casing
Ripple, reduce these sound waves caused by pressure, reduce further the resonance of voice box casing.
Brief description of the drawings
Fig. 1 is a kind of side sectional view of audio amplifier of the present invention.
Fig. 2 is a kind of front section view of audio amplifier of the present invention.
Fig. 3 is enlarged drawing at Figure 1A.
As shown in the figure：1st, loudspeaker；2nd, bottom plate；3rd, top plate；4th, front panel；5th, rear board；6th, left panel；7th, right panel；
8th, magnet；9th, every magnetosphere；10th, electromagnet；11st, flexible sealing material；12nd, support；13rd, perforated plate；14th, flux bore；15th, rigidity
Porous sound absorbing vibration-proof structure.
Embodiment
The present invention is described further with embodiment below in conjunction with accompanying drawing, but the present invention be not limited only to it is following
Embodiment.
A kind of audio amplifier, including controller, voice box casing and loudspeaker 1, the voice box casing include bottom plate 2, top plate 3 with
And side plate, the side plate include front panel 4, rear board 5, left panel 6 and right panel 7, the front panel 4 be provided with one with
The through hole that loudspeaker 1 matches, the loudspeaker 1 is provided with magnet 8, and NULL is provided between the loudspeaker 1 and magnet 8
It is manufactured every being equipped with the electromagnet for adsorbing magnet on magnetosphere 9, the left panel 6, right panel 7, bottom plate 2 and top plate 3
10, each electromagnet 10 is provided with a magnetic field sensor for being used for induced field Strength Changes, the electromagnet 10 and magnetic
Field sensor is electrically connected with the controller, and is also sealed and fixed by flexible sealing material 11 between loudspeaker 1 and front panel 4,
And the bottom plate 2 be provided with one be used for when electromagnet 10 does not work support speaker 1 support 12, the bottom plate 2 with
And the inner side of top plate 3 is equipped with perforated plate 13, and the perforated plate 13 forms cavity, and the perforated plate with bottom plate 2 and side plate
13 form cavity with top plate 3 and side plate,
When work of electromagnet, loudspeaker can suspend in the presence of electromagnetic force, not acted between loudspeaker and support
Power；When electromagnet is stopped, loudspeaker position does not change, but loudspeaker can be withstood support by support.
The mass component of the NULL is
Fe2O3100 parts；
BaO 40-50 parts；
SrO 35-40 parts；
La 0.5-1 parts；
Co 2-3 parts.
The center of the support 12 is provided with a flux bore 14 passed through for magnetic force caused by the electromagnet on bottom plate.Magnetic flux
The diameter in hole 14 is slightly smaller than the width of magnet lower surface, so can prevent the lower surface of magnet 8 from being fallen from flux bore 14.
The flexible sealing material 11 is foam seal ring and glass cement.Loudspeaker 1 is first by foam seal ring with before
Panel 4 is fixed, and is then sealed by glass cement.
The loudspeaker 1 includes shell and the frame that is arranged on outside shell, and the magnet 8 is shell-like, and the magnet 8
It is set in outside shell.
Described every magnetosphere 9 is shell-like, and described to be set in every magnetosphere 9 on shell, the magnet 8 is set in every on magnetosphere 9.
The upper surface of support 12 is provided with pressure sensor, and the pressure sensor is electrically connected with the controller.
Rigid Porous sound-absorption vibration-reduction structure 15 is provided with the cavity.The Rigid Porous sound-absorption vibration-reduction structure refers in sky
Intracavitary fills some rigid materials, and multiple through holes are offered on these rigid materials.
During the operation principle of the present invention：When audio amplifier powers off, now electromagnet 10 is not powered up, so can not produce
Magnetic field and loudspeaker 1 is suspended, so 1 most weight of loudspeaker is by made of support 12, and fraction is
It is made up of the flexible sealing material 11 between loudspeaker 1 and front panel 4；After audio amplifier is electrified, now electromagnet 10
Be powered startup simultaneously, then produces magnetic force according to pre-set magnetic field size, the magnet 8 being arranged on loudspeaker 1 is produced
Raw active force, and then cause loudspeaker 1 to suspend, most of gravity is offset by magnetic force, and fraction passes through flexible sealing material
11 are made, that is, cause do not have active force between loudspeaker 1 and support 12, and such loudspeaker 1 will not also drive support in vibration
12 vibrations, and because flexible sealing material 11 is flexible, even if some vibration passes through flexible sealing material 11
Voice box casing is delivered to, that is also minimum；Then it is because electromagnet 10 powers off again, then electric when audio amplifier powers off again
Magnet 10 does not continue to work, and now loudspeaker 1 can be fallen down under gravity, but because with propping up when loudspeaker 1 suspends
Without distance or in small distance between frame 12, so directly can be caught and then supported by support 12 when loudspeaker 1 does not suspend
Firmly, loudspeaker 1 will not so be damaged.
And the control principle in terms of the application electrical equipment is：After audio amplifier is powered, if pressure sensor has received pressure,
Then represent that now loudspeaker 1 returns the pressure of support 12 1, do not suspend completely, so now controller can control and be arranged on bottom
Electromagnet 10 on plate 6 increases magnetic force, and until pressure sensor is not received by pressure, and magnetic field sensor is to survey always
Magnetic field is tried, the magnetic field around speaker magnets is matched with magnetic field set in advance, and then loudspeaker 1 is just hanged
Floating, uniform force, if magnetic field sensor test does not match to magnetic field with the magnetic field of setting, controller controls corresponding electromagnetism
Iron 10 makes corresponding change.
Claims (8)
1. a kind of audio amplifier, including controller, voice box casing and loudspeaker (1), the voice box casing includes bottom plate (2), top plate
(3) and side plate, the side plate include front panel (4), rear board (5), left panel (6) and right panel (7), the front panel
(4) it is provided with a through hole to match with loudspeaker (1), it is characterised in that：The loudspeaker (1) is provided with magnet (8), and institute
State and be provided between loudspeaker (1) and magnet (8) made of NULL every magnetosphere (9), the left panel (6), right panel (7),
The electromagnet (10) for adsorbing magnet is equipped with bottom plate (2) and top plate (3), each electromagnet (10) is provided with a use
In the magnetic field sensor of induced field Strength Changes, the electromagnet (10) and magnetic field sensor are electrically connected with the controller,
And also sealed and fixed by flexible sealing material (11) between loudspeaker (1) and front panel (4), and set on the bottom plate (2)
There are a support (12) for being used for the support speaker (1) when electromagnet (10) does not work, the bottom plate (2) and top plate (3)
Inner side is equipped with perforated plate (13), and the perforated plate (13) forms cavity, and the perforated plate with bottom plate (2) and side plate
(13) cavity is formed with top plate (3) and side plate；
When work of electromagnet, loudspeaker can suspend in the presence of electromagnetic force, not have active force between loudspeaker and support；When
When electromagnet is stopped, loudspeaker position does not change, but loudspeaker can be withstood support by support.
2. audio amplifier according to claim 1, it is characterised in that：The mass component of the NULL is
Fe2O3100 parts；
BaO 40-50 parts；
SrO 35-40 parts；
La 0.5-1 parts；
Co 2-3 parts.
3. audio amplifier according to claim 1, it is characterised in that：The center of the support (12) is provided with one on bottom plate
The flux bore (14) that magnetic force caused by electromagnet passes through.
4. audio amplifier according to claim 1, it is characterised in that：The flexible sealing material (11) is foam seal ring and glass
Glass glue.
5. audio amplifier according to claim 1, it is characterised in that：The loudspeaker (1) includes shell and is arranged on shell
Outer frame, the magnet (8) is shell-like, and the magnet (8) is set in outside shell.
6. audio amplifier according to claim 5, it is characterised in that：It is described every magnetosphere (9) be shell-like, it is described every magnetosphere (9) cover
It is located on shell, the magnet (8) is set in every on magnetosphere (9).
7. audio amplifier according to claim 1, it is characterised in that：Support (12) upper surface is provided with pressure sensor, and
The pressure sensor is electrically connected with the controller.
8. audio amplifier according to claim 1, it is characterised in that：Rigid Porous sound-absorption vibration-reduction structure is provided with the cavity
(15)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510624524.2A CN105142049B (en) | 2015-09-25 | 2015-09-25 | A kind of audio amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510624524.2A CN105142049B (en) | 2015-09-25 | 2015-09-25 | A kind of audio amplifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105142049A CN105142049A (en) | 2015-12-09 |
| CN105142049B true CN105142049B (en) | 2018-04-10 |
Family
ID=54727233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510624524.2A Expired - Fee Related CN105142049B (en) | 2015-09-25 | 2015-09-25 | A kind of audio amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105142049B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08237780A (en) * | 1995-02-24 | 1996-09-13 | Aisin Takaoka Ltd | Speaker stand |
| CN1516519A (en) * | 2003-08-31 | 2004-07-28 | 江 徐 | Voice box |
| CN2735694Y (en) * | 2004-06-07 | 2005-10-19 | 林健 | A loudspeaker |
| CN101132650A (en) * | 2006-08-25 | 2008-02-27 | 佛山市顺德区顺达电脑厂有限公司 | Vibration isolating structure of loudspeaker apparatus |
| CN202696829U (en) * | 2012-05-14 | 2013-01-23 | 苏生彬 | Magnetic suspension sound |
| CN104876563A (en) * | 2015-04-23 | 2015-09-02 | 程凯芬 | Ferrite magnetic-isolating material |
-
2015
- 2015-09-25 CN CN201510624524.2A patent/CN105142049B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08237780A (en) * | 1995-02-24 | 1996-09-13 | Aisin Takaoka Ltd | Speaker stand |
| CN1516519A (en) * | 2003-08-31 | 2004-07-28 | 江 徐 | Voice box |
| CN2735694Y (en) * | 2004-06-07 | 2005-10-19 | 林健 | A loudspeaker |
| CN101132650A (en) * | 2006-08-25 | 2008-02-27 | 佛山市顺德区顺达电脑厂有限公司 | Vibration isolating structure of loudspeaker apparatus |
| CN202696829U (en) * | 2012-05-14 | 2013-01-23 | 苏生彬 | Magnetic suspension sound |
| CN104876563A (en) * | 2015-04-23 | 2015-09-02 | 程凯芬 | Ferrite magnetic-isolating material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105142049A (en) | 2015-12-09 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yan Jun Inventor before: Li Ziquan |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180410 |
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| CF01 | Termination of patent right due to non-payment of annual fee |