CN2469649Y - Magnetostriction hi-fi plate speaker - Google Patents
Magnetostriction hi-fi plate speaker Download PDFInfo
- Publication number
- CN2469649Y CN2469649Y CN 01208463 CN01208463U CN2469649Y CN 2469649 Y CN2469649 Y CN 2469649Y CN 01208463 CN01208463 CN 01208463 CN 01208463 U CN01208463 U CN 01208463U CN 2469649 Y CN2469649 Y CN 2469649Y
- Authority
- CN
- China
- Prior art keywords
- amplifier
- permanent magnet
- sound
- magnetostrictive material
- shell
- 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 - Lifetime
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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model discloses a magnetic striction hi-fi flat speaker, which includes magnetic striction material, driving coils, permanent magnets, a shell, a pulling rod, a sound- making flat, an amplifier and an output device. The amplifier is arranged inside the shell whose middle part arranges with the magnetic stiction material, the permanent magnet and the driving coil. The sound-making flat is arranged at the bottom of the shell body. The output device is arranged between the amplifier and the sound-making plate. The permanent magnets are arranged at the two ends of the magnetic striction material, driving coils are arranged outside the magnetic striction material and the permanent magnet. The utility model has the advantages of simple structure, small volume, less occupying area, no sound delaying, high fidelity, realization of high power and ultra thin shape.
Description
The utility model relates to the energy conversion technique field, converts electrical energy into the device of acoustic energy specifically, particularly a kind of magnetostriction high-fidelity panel speaker.
Traditional loud speaker adopts the basin that shakes to pronounce, Chinese patent 97208771.0 discloses a kind of high-fidelity music center, it forms audio amplifier by casing, loud speaker, sound-absorbing sheet, though this audio amplifier has structurally been avoided the distortion of the resonance and the sound of casing, but also there is tangible directive property in the sound that audio amplifier sends, so poor effect.Existing panel speaker is to adopt electromagnetic actuator and piezoelectric ceramic actuator, come sounding with the flat board basin that replaces shaking, panel speaker is the area source of sound sounding, the each several part of sounding flat board all can be used as relatively independent articulating region, and has certain phase difference, and its sound field is a sound field of dispersing, therefore the sound dispersivity of panel speaker is good, but because driver is subjected to the restriction of response speed, there is certain hysteresis quality in vibration sounding, and desirable not enough aspect LF-response; The electromagnetic actuator panel speaker itself has special-purpose amplification driving circuit, the power amplifier output signal that receives is amplified, and must the configuration subwoofer increase effect, and the power of loud speaker is restricted; There is the extremely aging problem of losing in piezoelectric ceramic in the piezoelectric ceramic panel speaker, and needs very high driving voltage, and response frequency also has certain restriction.
The purpose of this utility model is a kind of magnetostriction high-fidelity panel speaker that provides at the deficiencies in the prior art, and it has overcome the limitation aspect response in the prior art, makes Hz-KHz wideer, and acoustic fidelity is higher.
The purpose of this utility model is achieved in that
Magnetostriction high-fidelity panel speaker, comprise magnetostrictive material, drive coil, permanent magnet, shell, stayed mast, pronunciation flat board, amplifier, follower, characteristics are that amplifier places in the shell, is provided with magnetostrictive material, permanent magnet, drive coil in the middle, it is dull and stereotyped that lower housing portion is provided with pronunciation, is provided with follower between amplifier and the pronunciation flat board; The magnetostrictive material two ends are provided with permanent magnet, and magnetostrictive material and permanent magnet periphery are provided with drive coil; Amplifier middle part is a matrix frame groove, and two ends are two rectangular blocks, is connected by rectangular strip between frame groove and the rectangular block; Stayed mast is located between the rectangular block at amplifier two ends.
The utility model is simple in structure, and volume is little, and area occupied is few, and sound does not have hysteresis quality, and the fidelity height can be accomplished high-powerly, reaches ultrathin.
Below in conjunction with accompanying drawing the utility model is described in detail:
Fig. 1 is the utility model structural representation
Fig. 2 is the vertical view of Fig. 1
Among the figure: the dull and stereotyped 9-bolt of 1 one magnetostrictive material, 2-drive coil, 3-permanent magnet, 4-shell, 5-stayed mast, 6-amplifier, 7-follower 8-pronunciation
Consult accompanying drawing, the utility model is made up of magnetostrictive material 1, drive coil 2, permanent magnet 3, shell 4, stayed mast 5, pronunciation flat board 8, amplifier 6, follower 7, amplifier 6 places in the shell 4, be provided with magnetostrictive material 1, permanent magnet 3, drive coil 2 in the middle, housing 4 bottoms are provided with pronunciation flat board 8, are provided with follower 7 between amplifier 6 and the pronunciation dull and stereotyped 8; Magnetostrictive material 1 two ends are provided with permanent magnet 3, and magnetostrictive material 1 and permanent magnet 3 peripheries are provided with drive coil 2; Amplifier 6 middle parts are a matrix frame groove, and two ends are two rectangular blocks, are connected by rectangular strip between frame groove and the rectangular block; Stayed mast 5 is located between the rectangular block at amplifier 6 two ends, and amplifier 6 is fixed magnetostrictive material 1, permanent magnet 3, drive coil 2 by the effect of stayed mast 5, and shell 4 is fixed by the bolt 9 and the rectangular block at amplifier 6 two ends.The course of work: drive coil 2 is converted into field signal to drive the action of magnetostrictive material 1 with the signal of telecommunication of input, permanent magnet 3 provides bias magnetic field for magnetostrictive material 1, stayed mast 5 applies prestressing force for magnetostrictive material 1, make magnetostrictive material 1 produce " jump " effect, magnetostrictive material 1 vibrate, amplifier 6 amplifies the vibration that magnetostrictive material 1 produce, and the direction of change vibration propagation, follower 7 will be put vibration and become surface vibration, realization is to the dull and stereotyped 8 output audio vibration waves of pronunciation, pronunciation dull and stereotyped 8 propagates into this audio frequency vibration ripple in the air, has realized voiced process.Magnetostrictive material 1 are under the synergy of permanent magnet 3 and stayed mast 5, being activated " synchronously " that produce after the excitation of coil 2 with input audio signal vibrates, this vibration is delivered to pronunciation dull and stereotyped 8 by amplifier 6 and follower 7, make the vibration of dull and stereotyped 8 generations of pronunciation and input audio signal " synchronously ", audio electrical signal is just gone out sound transmission by the utility model like this, because the response time of magnetostrictive material is the microsecond level, the obvious time of staying greater than human auditory system, therefore realized having reached the effect of high-fidelity synchronously acoustically.
Claims (4)
1, a kind of magnetostriction high-fidelity panel speaker, comprise magnetostrictive material (1), drive coil (2), permanent magnet (3), shell (4), stayed mast (5), pronunciation dull and stereotyped (8), amplifier (6), follower (7), it is characterized in that amplifier (6) places in the shell (4), is provided with magnetostrictive material (1), permanent magnet (3), drive coil (2) in the middle, housing (4) bottom is provided with pronunciation dull and stereotyped (8), is provided with follower (7) between amplifier (6) and the pronunciation dull and stereotyped (8).
2, loud speaker according to claim 1 is characterized in that magnetostrictive material (1) two ends are provided with permanent magnet (3), and magnetostrictive material (1) and permanent magnet (3) periphery are provided with drive coil (2).
3, loud speaker according to claim 1 is characterized in that amplifier (6) middle part is a matrix frame groove, and two ends are two rectangular blocks, is connected by rectangular strip between frame groove and the rectangular block.
4, loud speaker according to claim 1 is characterized in that stayed mast (5) is located between the rectangular block at amplifier (6) two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01208463 CN2469649Y (en) | 2001-03-06 | 2001-03-06 | Magnetostriction hi-fi plate speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01208463 CN2469649Y (en) | 2001-03-06 | 2001-03-06 | Magnetostriction hi-fi plate speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2469649Y true CN2469649Y (en) | 2002-01-02 |
Family
ID=33628633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01208463 Expired - Lifetime CN2469649Y (en) | 2001-03-06 | 2001-03-06 | Magnetostriction hi-fi plate speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2469649Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009082847A1 (en) * | 2007-12-28 | 2009-07-09 | I-Mu Technology Co., Ltd. | A vibration audio driver |
| CN101056477B (en) * | 2007-04-12 | 2011-09-21 | 曾勇 | Radio attached audio energy converter |
| CN105959889A (en) * | 2016-05-10 | 2016-09-21 | 中国人民解放军军械工程学院 | Bow stretching type giant magnetostrictive audio transduction device |
-
2001
- 2001-03-06 CN CN 01208463 patent/CN2469649Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101056477B (en) * | 2007-04-12 | 2011-09-21 | 曾勇 | Radio attached audio energy converter |
| WO2009082847A1 (en) * | 2007-12-28 | 2009-07-09 | I-Mu Technology Co., Ltd. | A vibration audio driver |
| CN105959889A (en) * | 2016-05-10 | 2016-09-21 | 中国人民解放军军械工程学院 | Bow stretching type giant magnetostrictive audio transduction device |
| CN105959889B (en) * | 2016-05-10 | 2019-01-25 | 中国人民解放军军械工程学院 | A kind of bow formula ultra-magnetic telescopic audio transducing head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110306 Granted publication date: 20020102 |