CN105142049A - Loudspeaker box - Google Patents
Loudspeaker box Download PDFInfo
- Publication number
- CN105142049A CN105142049A CN201510624524.2A CN201510624524A CN105142049A CN 105142049 A CN105142049 A CN 105142049A CN 201510624524 A CN201510624524 A CN 201510624524A CN 105142049 A CN105142049 A CN 105142049A
- Authority
- CN
- China
- Prior art keywords
- loud speaker
- electromagnet
- audio amplifier
- 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.)
- Granted
Links
- 238000010521 absorption reaction Methods 0.000 claims abstract description 8
- 230000005291 magnetic effect Effects 0.000 claims description 34
- 239000003566 sealing material Substances 0.000 claims description 12
- 230000004907 flux Effects 0.000 claims description 7
- 239000004568 cement Substances 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 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
Landscapes
- Details Of Audible-Bandwidth Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention relates to the sound equipment system technology field and especially relates to a loudspeaker box. In the loudspeaker box, an electromagnet is used to suspend a loudspeaker, and a base plate and a top plate are provided with perforated plates so as to carry out vibration attenuation and sound absorption. By using the loudspeaker box, resonance is small and sound quality is good.
Description
Technical field
The present invention relates to sound system technical field, particularly relate to a kind of audio amplifier.
Background technology
Audio amplifier is last in whole sound system flow process, is also a most important composition, and its playing quality is very big on the impact of whole system performance, and estimate according to professional person, the contribution of audio amplifier to whole sound system accounts for more than 30% of whole system.
Audio amplifier itself comprises voice box casing, loud speaker and frequency divider, the impact of quality on tonequality of loud speaker and frequency divider accounts for 70%, and the impact of voice box casing on tonequality accounts for 30%, because loud speaker and the impact of frequency divider on tonequality larger, so prior art most people improve loud speaker and frequency divider, and few people go to improve voice box casing.
But voice box casing has a great impact the tonequality of audio amplifier also tool, wherein topmost impact is audio amplifier resonance, again because the frame of loud speaker is mainly fastened on the front panel of voice box casing by screw by the loud speaker of prior art, namely frame directly contacts with front panel, so the vibration produced when speaker operation can be directly delivered on the front panel of voice box casing by supporting constructions such as frame, and then voice box casing is resonated, also some audio amplifiers are had to be fixed on by loud speaker on other panel by support, can directly transfer vibrations on panel fixing with it during such speaker operation, voice box casing is resonated, the sound timbre that audio amplifier is sent is poor, also have the acoustic pressure of voice box casing accumulated inside also to vibrate by direct-drive voice box casing, this sound timbre that also audio amplifier can be caused to send is poor.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of resonance less and the good audio amplifier of the sound timbre sent.
The technical solution adopted in the present invention is: a kind of audio amplifier, comprise controller, voice box casing and loud speaker, described voice box casing comprises base plate, top board and side plate, described side plate comprises front panel, rear board, left panel and right panel, described front panel is provided with a through hole matched with loud speaker, it is characterized in that: described loud speaker is provided with magnet, and be provided with between described loud speaker and magnet that NULL makes every magnetosphere, described left panel, right panel, base plate and top board are equipped with the electromagnet for adsorbing magnet, each electromagnet is provided with a magnetic field sensor for induced field Strength Changes, described electromagnet and magnetic sensors are all electrically connected with controller, and it is also fixing by flexible sealing material sealing between loud speaker and front panel, and described base plate is provided with a support for the support speaker when electromagnet does not work, perforated plate is equipped with inside described base plate and top board, and described perforated plate and base plate and side plate form cavity, and described perforated plate and top board and side plate form cavity,
When work of electromagnet, loud speaker at the effect low suspension of electromagnetic force, can not have active force between loud speaker and support; When electromagnet quits work, loudspeaker position does not change, but loud speaker can be withstood support by support.
The mass component of described NULL is
The center of described support is provided with a magnetic flux hole passed through for the magnetic force of the electromagnet generation on base plate.
Described flexible sealing material is foam seal ring and glass cement.
Described loud speaker comprises shell and is arranged on the frame outside shell, and described magnet is shell-like, and described magnet is set in outside shell.
Described is shell-like every magnetosphere, and be describedly set on shell every magnetosphere, described magnet is set on magnetosphere.
Described pedestal upper end face is provided with pressure sensor, and described pressure sensor is electrically connected with controller.
Rigid Porous sound-absorption vibration-reduction structure is provided with in described cavity.
Adopt above technical scheme compared with prior art, the present invention has the following advantages: suspended by loud speaker by electromagnet, such loud speaker only has annexation by the front panel of flexible sealing material and voice box casing, namely the vibration that loud speaker produces can not be delivered on voice box casing through the parts directly connected, and only can be delivered on front panel by flexible material, pass to vibration in the past so greatly to be reduced by flexible material, so voice box casing can not be made during speaker operation to resonate, the sound timbre that such audio amplifier sends is better, and adopt magnetic sensors to detect magnetic field, like this can better control loudspeaker suspend time stability, shake is not easy when loud speaker is suspended, and be provided with between magnet and loud speaker every magnetosphere, the work of the influence of magnetic field loud speaker that can effectively prevent electromagnet from being formed like this itself, and a support is set, like this when not being energized, namely when electromagnet does not work, the function of support speaker can be played by support, and during magnet switching electricity, the position of loud speaker is constant, namely in the unexpected power-off of electromagnet, namely loud speaker can not cause speaker damage because there being range difference when suspended state becomes and relies on stent support state.And on base plate and top board, be provided with perforated plate, and perforated plate and base plate and top board form cavity, this structure can well reach the function of sound-absorption vibration-reduction like this, well can absorb the sound wave of voice box casing accumulated inside, reduce the pressure that these sound waves are formed, and then reducing the resonance of voice box casing, the sound timbre that audio amplifier is sent is better.
And adopt the NULL that this component forms, better every magnetic effect.
The heart arranges a magnetic flux hole in the bracket, can prevent like this because support stops the impact that magnetic field produces.
Adopt foam seal ring and glass cement loud speaker and front panel seals to fix, so not only sealing fixed effect better, and greatly can reduce the vibration that loud speaker passes over.
Magnet is made shell-like, can better coordinate with multiple electromagnet like this, stressed more even when loud speaker is suspended.
Shell-like will be made every magnetosphere, can better separated magnetic effect be played.
Support arranges a pressure sensor, and when speaker operation, pressure sensor has detected pressure like this, then represent that loud speaker does not suspend completely, now can control corresponding electromagnet by controller and loud speaker is suspended completely.
Rigid Porous sound-absorption vibration-reduction structure is set in cavity, the sound wave accumulated in voice box casing can better be absorbed like this, reduce the pressure that these sound waves produce, reduce further the resonance of voice box casing.
Accompanying drawing explanation
Fig. 1 is the side sectional view of a kind of audio amplifier of the present invention.
Fig. 2 is the front section view of a kind of audio amplifier of the present invention.
Fig. 3 is Figure 1A place enlarged drawing.
As shown in the figure: 1, loud speaker; 2, base plate; 3, top board; 4, front panel; 5, rear board; 6, left panel; 7, right panel; 8, magnet; 9, every magnetosphere; 10, electromagnet; 11, flexible sealing material; 12, support; 13, perforated plate; 14, magnetic flux hole; 15, Rigid Porous sound-absorption vibration-reduction structure.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described further, but the present invention is not limited only to following embodiment.
A kind of audio amplifier, comprise controller, voice box casing and loud speaker 1, described voice box casing comprises base plate 2, top board 3 and side plate, described side plate comprises front panel 4, rear board 5, left panel 6 and right panel 7, described front panel 4 is provided with a through hole matched with loud speaker 1, described loud speaker 1 is provided with magnet 8, and be provided with between described loud speaker 1 and magnet 8 that NULL makes every magnetosphere 9, described left panel 6, right panel 7, base plate 2 and top board 3 are equipped with the electromagnet 10 for adsorbing magnet, each electromagnet 10 is provided with a magnetic field sensor for induced field Strength Changes, described electromagnet 10 and magnetic sensors are all electrically connected with controller, and also sealed fixing between loud speaker 1 and front panel 4 by flexible sealing material 11, and described base plate 2 is provided with a support 12 for the support speaker 1 when electromagnet 10 does not work, perforated plate 13 is equipped with inside described base plate 2 and top board 3, and described perforated plate 13 forms cavity with base plate 2 and side plate 3, and described perforated plate 13 forms cavity with top board 3 and side plate 2,
When work of electromagnet, loud speaker at the effect low suspension of electromagnetic force, can not have active force between loud speaker and support; When electromagnet quits work, loudspeaker position does not change, but loud speaker can be withstood support by support.
The mass component of described NULL is
The center of described support 12 is provided with a magnetic flux hole 14 passed through for the magnetic force of the electromagnet generation on base plate.The diameter in magnetic flux hole 14 is slightly smaller than the width of magnet lower surface, can prevent magnet 8 lower surface from falling from magnetic flux hole 14 like this.
Described flexible sealing material 11 is foam seal ring and glass cement.First loud speaker 1 is fixed by foam seal ring and front panel 4, is then sealed by glass cement.
Described loud speaker 1 comprises shell and is arranged on the frame outside shell, and described magnet 8 is shell-like, and described magnet 8 is set in outside shell.
Described is shell-like every magnetosphere 9, and be describedly set on shell every magnetosphere 9, described magnet 8 is set on magnetosphere 9.
Described support 12 upper surface is provided with pressure sensor, and described pressure sensor is electrically connected with controller.
Rigid Porous sound-absorption vibration-reduction structure 15 is provided with in described cavity.Described Rigid Porous sound-absorption vibration-reduction structure refers to fills some rigid materials in cavity, and these rigid materials offer multiple through hole.
During operation principle of the present invention: when audio amplifier power-off, now electromagnet 10 not energising, so can not magnetic field be produced and make loud speaker 1 suspend, so the most weight of loud speaker 1 is made by support 12, and fraction is made by the flexible sealing material 11 between loud speaker 1 and front panel 4, after audio amplifier is electrified, now electromagnet 10 is also energized startup simultaneously, then magnetic force is produced according to pre-set magnetic field size, active force is produced to the magnet 8 be arranged on loud speaker 1, and then loud speaker 1 is suspended, major part gravity is offset by magnetic force, fraction is made by flexible sealing material 11, namely make there is no active force between loud speaker 1 and support 12, such loud speaker 1 also can not drive support 12 to vibrate when vibrating, and because flexible sealing material 11 is flexible, even if so some vibration has been delivered to voice box casing by flexible sealing material 11, that is also minimum, then when audio amplifier again power-off time, because electromagnet 10 power-off again, then electromagnet 10 no longer works on, now loud speaker 1 can fall down under gravity, but because loud speaker 1 when suspending and between support 12 not distance or distance less, then support so can directly be caught by support 12 when loud speaker 1 does not suspend, loud speaker 1 can not be damaged like this.
And the control principle of the application's electrical equipment aspect is: when after audio amplifier energising, if pressure sensor has received pressure, then represent that now support 12 1 pressure returned by loud speaker 1, do not suspend completely, so this Time Controller can control the electromagnet 10 be arranged on base plate 6 increase magnetic force, until pressure sensor does not receive pressure, and magnetic sensors is testing magnetic field always, magnetic field around speaker magnets is matched with the magnetic field preset, and then loud speaker 1 can just be suspended, uniform force, if magnetic sensors is tested magnetic field and is not matched with the magnetic field of setting, then controller controls corresponding electromagnet 10 and makes corresponding change.
Claims (8)
1. an audio amplifier, comprise controller, voice box casing and loud speaker (1), described voice box casing comprises base plate (2), top board (3) and side plate, described side plate comprises front panel (4), rear board (5), left panel (6) and right panel (7), described front panel (4) is provided with a through hole matched with loud speaker (1), it is characterized in that: described loud speaker (1) is provided with magnet (8), and be provided with between described loud speaker (1) and magnet (8) that NULL makes every magnetosphere (9), described left panel (6), right panel (7), base plate (2) and top board (3) are equipped with the electromagnet (10) for adsorbing magnet, each electromagnet (10) is provided with a magnetic field sensor for induced field Strength Changes, described electromagnet (10) and magnetic sensors are all electrically connected with controller, and also sealed fixing between loud speaker (1) and front panel (4) by flexible sealing material (11), and described base plate (2) is provided with a support (12) for the support speaker (1) when electromagnet (10) does not work, described base plate (2) and top board (3) inner side are equipped with perforated plate (13), and described perforated plate (13) forms cavity with base plate (2) and side plate (3), and described perforated plate (13) forms cavity with top board (3) and side plate (2),
When work of electromagnet, loud speaker at the effect low suspension of electromagnetic force, can not have active force between loud speaker and support; When electromagnet quits work, loudspeaker position does not change, but loud speaker can be withstood support by support.
2. audio amplifier according to claim 1, is characterized in that: the mass component of described NULL is
Fe
2o
3100 parts;
BaO40-50 part;
SrO35-40 part;
La0.5-1 part;
Co2-3 part.
3. audio amplifier according to claim 1, is characterized in that: the center of described support (12) is provided with a magnetic flux hole (14) passed through for the magnetic force of the electromagnet generation on base plate.
4. audio amplifier according to claim 1, is characterized in that: described flexible sealing material (11) is foam seal ring and glass cement.
5. audio amplifier according to claim 1, is characterized in that: described loud speaker (1) comprises shell and is arranged on the frame outside shell, and described magnet (8) is shell-like, and described magnet (8) is set in outside shell.
6. audio amplifier according to claim 5, is characterized in that: described is shell-like every magnetosphere (9), and be describedly set on shell every magnetosphere (9), described magnet (8) is set on magnetosphere (9).
7. audio amplifier according to claim 1, is characterized in that: described support (12) upper surface is provided with pressure sensor, and described pressure sensor is electrically connected with controller.
8. audio amplifier according to claim 1, is characterized in that: be provided with Rigid Porous sound-absorption vibration-reduction structure (15) in described cavity.
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 true CN105142049A (en) | 2015-12-09 |
| CN105142049B 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 |
|---|---|
| CN105142049B (en) | 2018-04-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yan Jun Inventor before: Li Ziquan |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180410 |