CN204272378U - A kind of loud speaker based on giant magnetostrictive thin film - Google Patents
A kind of loud speaker based on giant magnetostrictive thin film Download PDFInfo
- Publication number
- CN204272378U CN204272378U CN201420858610.0U CN201420858610U CN204272378U CN 204272378 U CN204272378 U CN 204272378U CN 201420858610 U CN201420858610 U CN 201420858610U CN 204272378 U CN204272378 U CN 204272378U
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- CN
- China
- Prior art keywords
- voice coil
- loud speaker
- thin film
- vibrating diaphragm
- giant magnetostrictive
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Abstract
The utility model discloses a kind of loud speaker based on giant magnetostrictive thin film, comprise voice coil loudspeaker voice coil, vibrating diaphragm, shell, described vibrating diaphragm is placed in the top of described voice coil loudspeaker voice coil, and the lower surface of described vibrating diaphragm is provided with direct magnetostriction effect film or counter magnetostriction effect film.Loud speaker of the present utility model is by increasing direct magnetostriction effect film or counter magnetostriction effect film, and allow structure more simply, not wear and tear, not generate heat, sound property is better; Be easier to ultrathin, miniaturization; By increasing sound transducer, check processing module, power regulation module, the volume that can effectively keep loud speaker to send is constant, and the phenomenon that sound is too small or excessive can not occur.
Description
Technical field
The utility model relates to loudspeaker techniques field, is specifically related to a kind of loud speaker based on giant magnetostrictive thin film.
Background technology
Along with the expansion in consumer electronics market, the consumer electronics products such as a large amount of mobile phone, notebook computer are used widely, and as acoustic element important in consumer electronics product, loud speaker has demand widely.
Loud speaker, comprising: auxiliary system, comprises protecgulum and shell; Magnetic circuit system, comprise the washer and magnet that combine from top to bottom, magnetic circuit system is provided with magnetic gap; Vibrational system, the voice coil loudspeaker voice coil comprising vibrating diaphragm and combine with vibrating diaphragm, voice coil loudspeaker voice coil is arranged in magnetic gap; The curent change be arranged in the voice coil loudspeaker voice coil in magnetic gap makes the magnetic field force induced effect of voice coil loudspeaker voice coil produce vibration, drives diaphragm oscillations sounding.
In prior art, be pass into alternating current in voice coil loudspeaker voice coil, voice coil loudspeaker voice coil is subject to alternation motive force and produces alternate motion, drives diaphragm oscillations, repeatedly promotes air and sounding.
Loud speaker of the prior art drives diaphragm oscillations by voice coil loudspeaker voice coil, is be rigidly connected, easily heating, wearing and tearing, can not further ultrathin, miniaturization, is further improved.
Utility model content
For the problems referred to above, the utility model provides a kind of loud speaker based on giant magnetostrictive thin film, and acoustic characteristic is better, ultrathin, miniaturization more.
In order to solve the problem, the technical scheme that the utility model provides is:
Based on a loud speaker for giant magnetostrictive thin film, comprise voice coil loudspeaker voice coil, vibrating diaphragm, shell, described vibrating diaphragm is placed in the top of described voice coil loudspeaker voice coil, and the lower surface of described vibrating diaphragm is provided with direct magnetostriction effect film or counter magnetostriction effect film.
In voice coil loudspeaker voice coil, pass into alternating current, voice coil loudspeaker voice coil can produce alternating magnetic field, and direct magnetostriction effect film or counter magnetostriction effect film constantly shorten, extend under the effect of outside alternating magnetic field, thus drives the upper and lower promotion air of vibrating diaphragm and sounding; Structure more simply, is is not worn and torn, is not generated heat; Sound property is better.
Preferably, loud speaker also comprises sound transducer, check processing module, power regulation module, and described check processing module is connected with described sound transducer, power regulation module signal, and described power regulation module is electrically connected with external power source, described voice coil loudspeaker voice coil.
Sound transducer is utilized to detect volume around, when detect the sound sent of loud speaker excessive or too small time, check processing module changes electric current, the voltage swing in voice coil loudspeaker voice coil by power regulation module, thus the sound sent of adjustment loud speaker, make it to recover normal volume.
Especially, when listening to the music, even if volume adjustment is the same, the actual volume that different song sends through loud speaker is different, uses inconvenience, therefore needs to improve loud speaker.
Preferably, described check processing module is connected with external host signal.
Preferably, described shell is provided with air-vent, and described air-vent is coated with waterproof net; Air-vent exchanges by the air in shell and extraneous gas, ensures that tonequality is normal, undistorted.
Preferably, described shell is provided with illuminating lamp.
Compared with prior art, the beneficial effects of the utility model are:
Loud speaker of the present utility model is by increasing direct magnetostriction effect film or counter magnetostriction effect film, and allow structure more simply, not wear and tear, not generate heat, sound property is better; Be easier to ultrathin, miniaturization; By increasing sound transducer, check processing module, power regulation module, the volume that can effectively keep loud speaker to send is constant, and the phenomenon that sound is too small or excessive can not occur.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1 of the present utility model;
Fig. 2 is the structural representation of embodiment 2 of the present utility model.
In figure: 1, voice coil loudspeaker voice coil, 2, vibrating diaphragm, 3, shell, 4, sound transducer, 5, check processing module, 6, power regulation module, 7, waterproof net, 8, air-vent, 9, illuminating lamp, 10, direct magnetostriction effect film, 11, counter magnetostriction effect film.
Embodiment
Below the utility model is described further:
Embodiment 1:
Composition graphs 1: a kind of loud speaker based on giant magnetostrictive thin film, comprise voice coil loudspeaker voice coil 1, vibrating diaphragm 2, shell 3, vibrating diaphragm 2 is placed in the top of voice coil loudspeaker voice coil 1, and the lower surface of vibrating diaphragm 2 is provided with direct magnetostriction effect film 10.
In voice coil loudspeaker voice coil 1, pass into alternating current, voice coil loudspeaker voice coil 1 can produce alternating magnetic field, and direct magnetostriction effect film 10 constantly shortens, extends under the effect of outside alternating magnetic field, thus drives the upper and lower promotion air of vibrating diaphragm 2 and sounding; Structure more simply, is is not worn and torn, is not generated heat; Sound property is better.
Loud speaker also comprises sound transducer 4, check processing module 5, power regulation module 6, and check processing module 5 is connected with sound transducer 4, power regulation module 6 signal, and power regulation module 6 is electrically connected with external power source, voice coil loudspeaker voice coil 1.
Sound transducer 4 is utilized to detect volume around, when detect the sound sent of loud speaker excessive or too small time, check processing module 5 changes electric current, voltage swing in voice coil loudspeaker voice coil 1 by power regulation module 6, thus the sound sent of adjustment loud speaker, make it to recover normal volume.
Especially, when listening to the music, even if volume adjustment is the same, the actual volume that different song sends through loud speaker is different, uses inconvenience, therefore needs to improve loud speaker.
Check processing module 5 is connected with external host signal.
Shell 3 is provided with air-vent 8, air-vent 8 is coated with waterproof net 7; Air-vent 8 allows the air in shell 3 exchange with extraneous gas, ensures that tonequality is normal, undistorted; Waterproof net 7 prevents moisture from entering.
Shell 3 is provided with illuminating lamp 9.
Embodiment 2:
Composition graphs 1: a kind of loud speaker based on giant magnetostrictive thin film, comprise voice coil loudspeaker voice coil 1, vibrating diaphragm 2, shell 3, vibrating diaphragm 2 is placed in the top of voice coil loudspeaker voice coil 1, and the lower surface of vibrating diaphragm 2 is provided with counter magnetostriction effect film 11.
In voice coil loudspeaker voice coil 1, pass into alternating current, voice coil loudspeaker voice coil 1 can produce alternating magnetic field, and counter magnetostriction effect film 11 constantly shortens, extends under the effect of outside alternating magnetic field, thus drives the upper and lower promotion air of vibrating diaphragm 2 and sounding; Structure more simply, is is not worn and torn, is not generated heat; Sound property is better.
Loud speaker also comprises sound transducer 4, check processing module 5, power regulation module 6, and check processing module 5 is connected with sound transducer 4, power regulation module 6 signal, and power regulation module 6 is electrically connected with external power source, voice coil loudspeaker voice coil 1.
Sound transducer 4 is utilized to detect volume around, when detect the sound sent of loud speaker excessive or too small time, check processing module 5 changes electric current, voltage swing in voice coil loudspeaker voice coil 1 by power regulation module 6, thus the sound sent of adjustment loud speaker, make it to recover normal volume.
Especially, when listening to the music, even if volume adjustment is the same, the actual volume that different song sends through loud speaker is different, uses inconvenience, therefore needs to improve loud speaker.
Check processing module 5 is connected with external host signal.
Shell 3 is provided with air-vent 8, air-vent 8 is coated with waterproof net 7; Air-vent 8 allows the air in shell 3 exchange with extraneous gas, ensures that tonequality is normal, undistorted; Waterproof net 7 prevents moisture from entering.
Shell 3 is provided with illuminating lamp 9.
More than show and describe general principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. based on a loud speaker for giant magnetostrictive thin film, comprise voice coil loudspeaker voice coil, vibrating diaphragm, shell, it is characterized in that: described vibrating diaphragm is placed in the top of described voice coil loudspeaker voice coil, the lower surface of described vibrating diaphragm is provided with direct magnetostriction effect film or counter magnetostriction effect film.
2. the loud speaker based on giant magnetostrictive thin film according to claim 1, it is characterized in that: loud speaker also comprises sound transducer, check processing module, power regulation module, described check processing module is connected with described sound transducer, power regulation module signal, and described power regulation module is electrically connected with external power source, described voice coil loudspeaker voice coil.
3. the loud speaker based on giant magnetostrictive thin film according to claim 2, is characterized in that: described check processing module is connected with external host signal.
4. the loud speaker based on giant magnetostrictive thin film according to claim 1 and 2, is characterized in that: described shell is provided with air-vent, described air-vent is coated with waterproof net.
5. the loud speaker based on giant magnetostrictive thin film according to claim 1 and 2, is characterized in that: described shell is provided with illuminating lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420858610.0U CN204272378U (en) | 2014-12-30 | 2014-12-30 | A kind of loud speaker based on giant magnetostrictive thin film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420858610.0U CN204272378U (en) | 2014-12-30 | 2014-12-30 | A kind of loud speaker based on giant magnetostrictive thin film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204272378U true CN204272378U (en) | 2015-04-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420858610.0U Expired - Fee Related CN204272378U (en) | 2014-12-30 | 2014-12-30 | A kind of loud speaker based on giant magnetostrictive thin film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204272378U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105376681A (en) * | 2015-11-24 | 2016-03-02 | 中国矿业大学 | Planar coil driven film loudspeaker |
-
2014
- 2014-12-30 CN CN201420858610.0U patent/CN204272378U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105376681A (en) * | 2015-11-24 | 2016-03-02 | 中国矿业大学 | Planar coil driven film loudspeaker |
| CN105376681B (en) * | 2015-11-24 | 2018-06-12 | 中国矿业大学 | A kind of planar coil drive-type film-type loud speaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20151230 |
|
| EXPY | Termination of patent right or utility model |