CN110381428A - Novel piezoelectric loudspeaker - Google Patents
Novel piezoelectric loudspeaker Download PDFInfo
- Publication number
- CN110381428A CN110381428A CN201910814199.4A CN201910814199A CN110381428A CN 110381428 A CN110381428 A CN 110381428A CN 201910814199 A CN201910814199 A CN 201910814199A CN 110381428 A CN110381428 A CN 110381428A
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- China
- Prior art keywords
- piezoelectric
- piezoelectric patches
- novel
- tweeters diaphragmse
- patches
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- 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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- 241000264877 Hippospongia communis Species 0.000 claims description 16
- 239000012528 membrane Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000002657 fibrous material Substances 0.000 claims description 3
- 210000002268 wool Anatomy 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
- H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm for loudspeaker transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/021—Diaphragms comprising cellulose-like materials, e.g. wood, paper, linen
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
The embodiment of the invention discloses a kind of novel piezoelectric loudspeakers, are applied to electroacoustic techniques field, which includes the first piezoelectric patches, the second piezoelectric patches, tweeters diaphragmse and the operatic tunes；First piezoelectric patches and second piezoelectric patches are respectively adhered on the two sides of this tweeters diaphragmse, form piezoelectric patches tweeters diaphragmse structure, and first tabletting and second tabletting are connected in parallel；The piezoelectric patches tweeters diaphragmse structure pastes the opening for being installed on the operatic tunes, may make piezoelectric speaker bass function more obvious, and the volume of its sounding can be improved.
Description
Technical field
The invention belongs to electronic technology field more particularly to a kind of novel piezoelectric loudspeakers.
Background technique
Loudspeaker is widely used in various sound equipments and communication apparatus.Piezoelectric speaker (hereinafter referred to as piezoelectricity
Loudspeaker) have that low energy consumption, light-weight advantage, but piezoelectric speaker has 2 critical defects: first is that cannot be used for low frequency
Frequency plays, and is only limitted to high pitch application；Second is that sound pressure level is relatively low, i.e., sound is smaller.Existing technology is to piezoelectric speaker
Bass sounding problem for many years never break through, piezoelectric speaker be only limitted to certain high frequency prompt tones, caution sound sounding it
With significantly limiting applicable scene.
Summary of the invention
The present invention provides a kind of novel piezoelectric loudspeaker, it is intended to solve that piezoelectric speaker cannot send out bass and sound is small
The problem of.
The embodiment of the invention provides a kind of novel piezoelectric loudspeakers, comprising:
First piezoelectric patches, the second piezoelectric patches, tweeters diaphragmse and the operatic tunes；
First piezoelectric patches and second piezoelectric patches are respectively adhered on the two sides of the tweeters diaphragmse, form piezoelectricity
Piece tweeters diaphragmse structure；
First tabletting and second tabletting are connected in parallel；
The piezoelectric patches tweeters diaphragmse structure pastes the opening for being mounted on the operatic tunes.
Further, the tweeters diaphragmse is circular membrane, and having hardness is 55 degree of rubber edge, and the rubber edge has
Multiple protrusions form rubber rippled edge.
Further, the tweeters diaphragmse mixes wool fiber material using paper fiber.
Further, further includes: acoustical vibration plate；
The acoustical vibration plate is pasted onto the tweeters diaphragmse.
Further, the acoustical vibration plate is honeycomb sounding board, and the honeycomb sounding board includes multiple honeycombs, Mei Gesuo
It states honeycomb and constitutes a bass resonance chamber.
Further, boost inductance, the output end of the boost inductance is arranged in the input terminal of the novel piezoelectric loudspeaker
It is connect with first piezoelectric patches and the second piezoelectric patches in parallel, the input terminal of the boost inductance and the novel piezoelectric loudspeaking
The output end of the amplifier of device is electrically connected.
Further, the boost inductance is octuple pressure boost inductance.
Further, first piezoelectric patches and second piezoelectric patches are rectangular piezoelectric ceramic piece.
From the embodiments of the present invention it is found that the first piezoelectric patches and the second piezoelectric patches are respectively adhered on the two of tweeters diaphragmse
Face, tweeters diaphragmse can produce bass, paste on the two sides of tweeters diaphragmse there are two piezoelectric patches, constitute a push-pull type piezoelectricity and drive
It is dynamic, so that tweeters diaphragmse is obtained twice of peak swing value, improves the middle low-frequency sound pressure of loudspeaker output, it is novel in the present embodiment
Piezoelectric speaker can issue bass, and sound is enough big, is widely applied piezoelectric speaker also as moving-coil speaker,
Improve the scope of application of piezoelectric speaker
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention.
Fig. 1 is the cross-sectional view of novel piezoelectric loudspeaker provided in an embodiment of the present invention；
Fig. 2 is the top view of novel piezoelectric loudspeaker provided in an embodiment of the present invention；
Fig. 3 is the booster circuit figure of novel piezoelectric loudspeaker provided in an embodiment of the present invention.
Specific embodiment
To enable the purpose of the present invention, feature, advantage more obvious and understandable, implement below in conjunction with the present invention
Attached drawing in example, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment
Only a part of the embodiment of the present invention, and not all embodiments.Based on the embodiments of the present invention, those skilled in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
A kind of novel piezoelectric loudspeaker is present embodiments provided, referring to Fig. 1 and Fig. 2, Fig. 1 is that the present invention is implemented to specific structure
The cross-sectional view for the novel piezoelectric loudspeaker that example provides；Fig. 2 is the top view of novel piezoelectric loudspeaker provided in an embodiment of the present invention.
The novel piezoelectric loudspeaker includes: the first piezoelectric patches 10, the second piezoelectric patches 20, tweeters diaphragmse 30 and the operatic tunes 40；
First piezoelectric patches 10 and the second piezoelectric patches 20 are respectively adhered on the two sides of tweeters diaphragmse 30, form the vibration of piezoelectric patches bass
Membrane structure.
First tabletting 10 and the second tabletting 20 are connected in parallel；
Specifically, the first tabletting 10 and the second tabletting 20 are all the piezoelectric ceramic pieces of rectangle, wherein the two of the first tabletting 10
End is connect by the first shunt leads 11 and the second shunt leads 12 with the both ends of the second tabletting 20 respectively.
The piezoelectric patches tweeters diaphragmse structure is pasted to the opening for being mounted on the operatic tunes 40.
Further, first lead 21 and the second lead 22 are drawn in the both ends of the second piezoelectric patches 20 respectively；The operatic tunes has the
One leading foot 41 and the second leading foot 42, wherein the first leading foot 41 is connected with first lead 21, the second leading foot 42 and
Two leads 22 are connected.
In the present embodiment, the first piezoelectric patches and the second piezoelectric patches are respectively adhered on the two sides of tweeters diaphragmse, and tweeters diaphragmse can
Bass is generated, there are two piezoelectric patches for stickup on the two sides of tweeters diaphragmse, constitute a push-pull type Piezoelectric Driving, i.e. the first piezoelectric patches
With the second piezoelectric patches when electric signal is added, the effect of vibration power of generation forms force direction identical one to tweeters diaphragmse and pushes away
One draws, and tweeters diaphragmse is made to obtain twice of peak swing value, improves the acoustic pressure of loudspeaker output, the novel piezoelectric in the present embodiment
Loudspeaker can issue bass, and sound is enough big, is widely applied piezoelectric speaker also as moving-coil speaker, improves
The scope of application of piezoelectric speaker.
Further, tweeters diaphragmse 30 is circular membrane, and the rubber edge for being 55 degree with hardness, the rubber edge is with 1~3
A protrusion forms rubber rippled edge.Wherein, two protrusions are shown in Fig. 1, respectively close to the both ends of tweeters diaphragmse 30, i.e., two
Center of a protrusion relative to tweeters diaphragmse 30, closer to the both ends of tweeters diaphragmse 30.
Also, tweeters diaphragmse 30 mixes wool fiber material using paper fiber.Such form and material combination, have more
Good low-frequency vibration characteristic, can issue the lower sound of frequency.
Further, which further includes acoustical vibration plate 50, and acoustical vibration plate 50 is pasted onto bass vibration
On film 30.Acoustical vibration plate 50 is specially honeycomb sounding board, which includes multiple honeycombs, and each honeycomb constitutes one
A bass resonance chamber.Multiple bass resonance chambers in the honeycomb oscillating plate, can obviously improve the bass of novel piezoelectric loudspeaker, by
Minimum 400Hz (hertz) originally, is reduced to 250Hz.
The honeycomb sounding board is pasted on tweeters diaphragmse 30, when the first piezoelectric patches 10 and the second piezoelectric patches 20 obtain electric signal and produce
When raw electric oscillation, tweeters diaphragmse 30 is vibrated, while the honeycomb sounding board being driven to generate resonant vibration, also synchronous to issue same sound
Wave, after having added honeycomb sounding board, volume can promote 3dB, and the effect for increasing volume is obvious.
Further, the driving voltage of piezoelectric patches is promoted, piezoelectric patches is voltage driven type element, normal power amplification electricity
The output of road, especially small-power power amplifier only has 1-3v or so, effectively piezoelectric patches cannot be driven to reach peak swing.Therefore,
In the present embodiment, by increasing boost inductance, 7 volts that the signal voltage for being added in piezoelectric patches both ends is improved, to drive piezoelectricity
Piece reaches peak swing, so that the output sound of novel piezoelectric loudspeaker can reach maximum.
Specifically, referring to Fig. 3, Fig. 3 is the booster circuit figure of the novel piezoelectric loudspeaker in the present embodiment, in novel piezoelectric
The input terminal of loudspeaker is arranged boost inductance 60, the output end of boost inductance 60 and the first piezoelectric patches 10 in parallel and the second piezoelectricity
Piece 20 connects, and the input terminal of boost inductance 60 and the output end of the amplifier (not indicating in figure) of the novel piezoelectric loudspeaker are electrically connected
It connects.
Specifically, boost inductance 60 is an octuple pressure boost inductance.
The working principle of foregoing circuit are as follows: the signal of amplifier output by input terminal be sent into boost inductance 60 it is primary around
The signal is increased 7 times by the boosting winding of boost inductance 60, i.e., to 7v or more, then the weak signal of input is appreciated by group
It is applied on 2 the first piezoelectric patches and the second piezoelectric patches in parallel, thus can achieve the voltage requirement of maximum vibration amplitude,
Obtain bigger sound.
The principle of sound of above-mentioned loudspeaker are as follows: the electric signal of sound passes through above-mentioned booster circuit, after being boosted inductance acoustic pressure
It exports to the first piezoelectric patches and the second piezoelectric patches, the first piezoelectric patches and the second piezoelectric patches obtain high voltage electric signal, generate electricity vibration
It is dynamic, tweeters diaphragmse vibration, while the honeycomb sounding board being pasted together with tweeters diaphragmse generates resonant vibration, also synchronous sending is same
The sound wave of frequency.
The novel piezoelectric loudspeaker power consumption provided in the present embodiment is extremely low, and the identical moving-coil speaker phase of same acoustical power
Compare, its power consumption only has 1/20, substantially reduces power consumption, saves electric energy, keeps the stand-by time of complete machine enough long；Weight is extremely light: with
The moving-coil speaker for issuing same sound pressure level compares, its weight only has the 1/4 of moving-coil speaker；It is widely used: can be extensive
It applies on sound equipment and various audible devices, it is low in energy consumption, it is light-weight, particularly suitable for present portable broadcasting audible device,
Battery can be greatly prolonged uses time and service life.Since piezoelectric speaker is not power component, the power configured thus is put
Big device does not have to radiation fin again.Supplies consumption is reduced, material cost is reduced.
The above are the descriptions to novel piezoelectric loudspeaker provided by the present invention, for those skilled in the art, foundation
The thought of the embodiment of the present invention, there will be changes in the specific implementation manner and application range, to sum up, the content of the present specification
It should not be construed as limiting the invention.
Claims (8)
1. a kind of novel piezoelectric loudspeaker characterized by comprising
First piezoelectric patches, the second piezoelectric patches, tweeters diaphragmse and the operatic tunes；
First piezoelectric patches and second piezoelectric patches are respectively adhered on the two sides of the tweeters diaphragmse, and it is low to form piezoelectric patches
Sound diaphragm structure；
First tabletting and second tabletting are connected in parallel；
The piezoelectric patches tweeters diaphragmse structure pastes the opening for being mounted on the operatic tunes.
2. novel piezoelectric loudspeaker according to claim 1, which is characterized in that the tweeters diaphragmse is circular membrane, tool
Having hardness is 55 degree of rubber edge, and the rubber edge has multiple protrusions, forms rubber rippled edge.
3. novel piezoelectric loudspeaker according to claim 2, which is characterized in that the tweeters diaphragmse is mixed using paper fiber
Wool fiber material.
4. novel piezoelectric loudspeaker according to claim 3, which is characterized in that further include: acoustical vibration plate；
The acoustical vibration plate is pasted onto the tweeters diaphragmse.
5. novel piezoelectric loudspeaker according to claim 4, which is characterized in that the acoustical vibration plate is honeycomb resonance
Plate, the honeycomb sounding board include multiple honeycombs, and each honeycomb constitutes a bass resonance chamber.
6. novel piezoelectric loudspeaker according to claim 5, which is characterized in that the input terminal of the novel piezoelectric loudspeaker
Boost inductance is set, and the output end of the boost inductance is connect with first piezoelectric patches in parallel and the second piezoelectric patches, described
The input terminal of boost inductance is electrically connected with the output end of the amplifier of the novel piezoelectric loudspeaker.
7. novel piezoelectric loudspeaker according to claim 6, which is characterized in that the boost inductance is eight voltage-doubling boosts electricity
Sense.
8. novel piezoelectric loudspeaker according to claim 7, which is characterized in that first piezoelectric patches and second pressure
Electric piece is rectangular piezoelectric ceramic piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910814199.4A CN110381428A (en) | 2019-08-30 | 2019-08-30 | Novel piezoelectric loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910814199.4A CN110381428A (en) | 2019-08-30 | 2019-08-30 | Novel piezoelectric loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110381428A true CN110381428A (en) | 2019-10-25 |
Family
ID=68261166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910814199.4A Pending CN110381428A (en) | 2019-08-30 | 2019-08-30 | Novel piezoelectric loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110381428A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111131973A (en) * | 2020-01-14 | 2020-05-08 | 东莞达电电子有限公司 | Vibrating diaphragm structure for earphone |
| CN111787466A (en) * | 2020-07-08 | 2020-10-16 | 深圳市时商创展科技有限公司 | Sound box vibrating diaphragm and sound box |
| WO2021129333A1 (en) * | 2019-12-28 | 2021-07-01 | 荣耀终端有限公司 | Loudspeaker inner core, loudspeaker module and electronic device |
| WO2021134672A1 (en) * | 2019-12-31 | 2021-07-08 | 瑞声声学科技(深圳)有限公司 | Piezoelectric mems microphone |
| CN114594600A (en) * | 2020-12-03 | 2022-06-07 | 中移(成都)信息通信科技有限公司 | Near-eye display system, fixing device, signal processing method, signal processing apparatus, and signal processing medium |
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|---|---|---|---|---|
| US6747395B1 (en) * | 1998-11-02 | 2004-06-08 | Matsushita Electric Industrial Co., Ltd. | Piezoelectric loudspeaker |
| CN1625919A (en) * | 2002-01-30 | 2005-06-08 | 松下电器产业株式会社 | Speaker for super-high frequency range reproduction |
| CN201388295Y (en) * | 2009-01-09 | 2010-01-20 | 东莞思威特电子有限公司 | Piezoelectric trumpet |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021129333A1 (en) * | 2019-12-28 | 2021-07-01 | 荣耀终端有限公司 | Loudspeaker inner core, loudspeaker module and electronic device |
| WO2021134672A1 (en) * | 2019-12-31 | 2021-07-08 | 瑞声声学科技(深圳)有限公司 | Piezoelectric mems microphone |
| CN111131973A (en) * | 2020-01-14 | 2020-05-08 | 东莞达电电子有限公司 | Vibrating diaphragm structure for earphone |
| CN111787466A (en) * | 2020-07-08 | 2020-10-16 | 深圳市时商创展科技有限公司 | Sound box vibrating diaphragm and sound box |
| CN114594600A (en) * | 2020-12-03 | 2022-06-07 | 中移(成都)信息通信科技有限公司 | Near-eye display system, fixing device, signal processing method, signal processing apparatus, and signal processing medium |
| CN114594600B (en) * | 2020-12-03 | 2023-08-15 | 中移(成都)信息通信科技有限公司 | Near-eye display system, fixing device, signal processing method, device and medium thereof |
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