CN104244151A - Loudspeaker - Google Patents
Loudspeaker Download PDFInfo
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- CN104244151A CN104244151A CN201310248752.5A CN201310248752A CN104244151A CN 104244151 A CN104244151 A CN 104244151A CN 201310248752 A CN201310248752 A CN 201310248752A CN 104244151 A CN104244151 A CN 104244151A
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- carbon nanotube
- frequency
- nanotube film
- low frequency
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Abstract
A loudspeaker comprises an upper cover and a substrate, the upper cover is provided with a high-frequency cavity, a medium-frequency cavity and a low-frequency cavity. The volume of the medium-frequency cavity is larger than the volume of the high-frequency cavity and smaller than the volume of the low-frequency cavity. A high-frequency driver, a high-frequency electrode and a first carbon nano-tube film which are arranged on the substrate are arranged in the high-frequency cavity. The high-frequency driver is connected with the first carbon nano-tube film through the high-frequency electrode to enable the first carbon nano-tube film to vibrate. A medium-frequency driver, a medium-frequency electrode and a second carbon nano-tube film which are arranged on the substrate are arranged in the medium-frequency cavity. The medium-frequency driver is connected with the second carbon nano-tube film through the medium-frequency electrode to enable the second carbon nano-tube film to vibrate. A low-frequency driver, a low-frequency electrode and a third carbon nano-tube film which are arranged on the substrate are arranged in the low-frequency cavity. The low-frequency driver is connected with the third carbon nano-tube film through the low-frequency electrode to enable the third carbon nano-tube film to vibrate. Micropores are formed in the high-frequency cavity, the medium-frequency cavity and the low-frequency cavity, vibration waves generated by the first carbon nano-tube film, the second carbon nano-tube film and the third carbon nano-tube film are transmitted out through the micropores.
Description
Technical field
The present invention relates to a kind of loud speaker, particularly relate to a kind of CNT (carbon nano-tube) loud speaker.
Background technology
Loud speaker is the equipment converting the electrical signal to whole of the air that people's ear can be heard.Particularly, cigarette rises that can to change the audio-frequency electric power signal in certain limit into distortion by transducing mode little and have the sub-audible sound of enough sound pressure levels.According to the operation principle of loud speaker, existing loud speaker can be divided into electrodynamic type, piezoelectric type and electrostatic loudspeaker etc.Wherein, Electrodynamic speaker structure is simple, tonequality is outstanding and one-tenth body, is therefore most widely used.
Piezo-electric loudspeaker of the prior art generally includes piezoelectric membrane, thin polymer film and electrode, thin polymer film is arranged on piezoelectric membrane, when the voltage corresponding with sound is applied on electrode, between thin polymer film, produce voltage difference to vibrate piezoelectric membrane, thus producing sound.
But thin polymer film has limited conductivity, be not easy to be coated on piezoelectric membrane, and can not be evenly applied on piezoelectric membrane.Therefore, thin polymer film in uneven thickness, thus reduce the quality of sound.In addition, because polymer has poor chemical resistance and moisture resistance, so have poor sound pressure characteristic in bass area.
Summary of the invention
In view of this, the loud speaker that a kind of chemical resistance and moisture resistance are provided is necessary.
A kind of loud speaker, comprise upper cover and substrate, described upper cover has frequency cavity, intermediate frequency chamber and low frequency chamber, the volume in described intermediate frequency chamber is greater than the volume of described frequency cavity and is less than the volume in described low frequency chamber, have in described frequency cavity and be arranged on described suprabasil high frequency driver, high-frequency electrode and the first carbon nanotube film, described high frequency driver connects described first carbon nanotube film to make described first carbon nanotube film vibration by described high-frequency electrode, have in described intermediate frequency chamber and be arranged on described suprabasil mid-driver, intermediate frequency electrode and the second carbon nanocapsule thin film, described mid-driver is vibrated to make described second carbon nanotube film by the second carbon nanotube film described in described intermediate frequency Electrode connection, described low frequency chamber has and is arranged on described suprabasil Low frequency drivers, low frequency electrode and the 3rd carbon nanotube film, described Low frequency drivers is vibrated to make described 3rd carbon nanotube film by the 3rd carbon nanotube film described in described low frequency Electrode connection, described frequency cavity, intermediate frequency chamber and low frequency chamber have micropore, described first carbon nanotube film, the vibration wave that second carbon nanotube film and the 3rd carbon nanotube film produce spreads out of through described micropore.
Compared with prior art, the loud speaker of the present embodiment produces institute's sound by the vibration of carbon nanotube film, because carbon nanotube film has good chemical resistance and moisture resistance, thus makes loud speaker have good chemical resistance and moisture resistance equally.
Accompanying drawing explanation
Fig. 1 is the schematic cross-section of the loud speaker of the embodiment of the present invention.
Fig. 2 is the schematic diagram of electrode and carbon nanotube film annexation in the embodiment of the present invention.
Main element symbol description
| Loud speaker | 200 |
| Substrate | 20 |
| Upper cover | 21 |
| Interval body | 210 |
| Frequency cavity | 211 |
| Intermediate frequency chamber | 212 |
| Low frequency chamber | 213 |
| Micropore | 214 |
| High frequency driver | 22 |
| First high-frequency electrode | 221 |
| Second high-frequency electrode | 222 |
| First carbon nanotube film | 23 |
| First CNT (carbon nano-tube) | 230 |
| Mid-driver | 24 |
| First intermediate frequency electrode | 241 |
| Second intermediate frequency electrode | 242 |
| Second carbon nanotube film | 25 |
| Second CNT (carbon nano-tube) | 250 |
| Low frequency drivers | 26 |
| First low frequency electrode | 261 |
| Second low frequency electrode | 262 |
| 3rd carbon nanotube film | 27 |
| 3rd CNT (carbon nano-tube) | 270 |
| Glue | 28 |
Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
Refer to Fig. 1 and Fig. 2, the loud speaker 200 that the embodiment of the present invention provides comprises substrate 20 and upper cover 21, and upper cover 21 is fixing on the substrate 20 by glue 28.
Upper cover 21 is divided into frequency cavity 211, intermediate frequency chamber 212 and low frequency chamber 213 by interval body 210, and wherein, the volume in low frequency chamber 213 is maximum, and the volume of frequency cavity 211 is minimum, and the volume in intermediate frequency chamber 212 is between low frequency chamber 213 and frequency cavity 211.
Frequency cavity 211, intermediate frequency chamber 212 and low frequency chamber 213 all have micropore 214, the axial cross section of micropore 214 is inverted V-shaped, namely diameter is reduced gradually by basad 20 directions of upper cover 21, and the micropore 214 of inverted V-shaped can prevent the dirty region fallen between upper cover 21 and substrate 20 such as dust, particulate.The size of micropore 214 can make sound wave spread out of.
The material of upper cover 21 and substrate 20 is glass, rigid plastic or metal, and such as, glass can be quartz glass or Pyrex.
Be provided with in frequency cavity 211 and be positioned at high frequency driver 22, first high-frequency electrode 221, second high-frequency electrode 222 in substrate 20 and the first carbon nanotube film 23.First carbon nanotube film 23 comprises some the first CNT (carbon nano-tube) 230 be arranged in parallel, and high-frequency drive 22 is connected the two ends of each root first CNT (carbon nano-tube) 230 respectively by the first high-frequency electrode 221 and the second high-frequency electrode 222.High frequency driver 22 receives high-frequency sound signal, and voltage high-frequency sound signal being converted to correspondence exports to the first high-frequency electrode 221 and the second high-frequency electrode 222, voltage is applied on the first carbon nanotube film 23 by the first high-frequency electrode 221 and the second high-frequency electrode 222, so, first carbon nanotube film 23 vibrates under the driving of voltage, and the micropore 214 of surface wave in frequency cavity 211 that vibration produces sends.
Be provided with in intermediate frequency chamber 212 and be positioned at mid-driver 24, first intermediate frequency electrode 241, second intermediate frequency electrode 242 in substrate 20 and the second carbon nanotube film 25.Second carbon nanotube film 25 comprises some the second CNT (carbon nano-tube) 250 be arranged in parallel, and mid-driver 24 is connected the two ends of each root second CNT (carbon nano-tube) 250 respectively by the first intermediate frequency electrode 241 and the second intermediate frequency electrode 242.Mid-driver 24 receives sound intermediate frequency signal, and voltage sound intermediate frequency signal being converted to correspondence exports to the first intermediate frequency electrode 241 and the second intermediate frequency electrode 242, voltage is applied on the second carbon nanotube film 25 by the first intermediate frequency electrode 241 and the second intermediate frequency electrode 242, so, second carbon nanotube film 25 vibrates under the driving of voltage, and the micropore 214 of surface wave on intermediate frequency chamber 212 that vibration produces sends.
Low frequency drivers 26, first low frequency electrode 261, the second low frequency electrode 262 and the 3rd carbon nanotube film 27 that are positioned at substrate 20 renal function is provided with in low frequency chamber 213.3rd carbon nanotube film 27 comprises the 3rd CNT (carbon nano-tube) 270 be arranged in parallel, and Low frequency drivers 26 is connected the two ends of each root the 3rd CNT (carbon nano-tube) 270 respectively by the first low frequency electrode 261 and the second low frequency electrode 262.Low frequency drivers 26 receives low frequency sound signals, and voltage low frequency sound signals being converted to correspondence exports to the first low frequency electrode 261 and the second low frequency electrode 262, voltage is applied on the 3rd carbon nanotube film 27 by the first low frequency electrode 261 and the second low frequency electrode 262, so, 3rd carbon nanotube film 27 vibrates under the driving of voltage, and the micropore 214 of surface wave on low frequency chamber 213 that vibration produces sends.
First high-frequency electrode 221, second high-frequency electrode 222, first intermediate frequency electrode 241, second intermediate frequency electrode 242, first low frequency electrode 261 and the second low frequency electrode 262 are formed by the mode of printing conducting resinl, electrically conductive ink or laying metal wire on the substrate 20.
First carbon nanotube film 23, second carbon nanotube film 25 and the 3rd carbon nanotube film 27 can be all individual layer, two-layer or multilayer, and every one deck is formed by the CNT (carbon nano-tube) be arranged in parallel.
The edge of upper cover 21 and substrate 20 is provided with glue 28, first carbon nanotube film 23, second carbon nanotube film 25 and the 3rd carbon nanotube film 27 by the space sealing between upper cover 21 and substrate 20, and then are sealed between upper cover 21 and substrate 20 by glue 28.
Because CNT (carbon nano-tube) has good chemical resistance and moisture resistance, so the loud speaker 200 be made up of the first carbon nanotube film 23, second carbon nanotube film 25 and the 3rd carbon nanotube film 27 has good chemical resistance and moisture resistance equally.
First carbon nanotube film 23, second carbon nanotube film 25 and the 3rd carbon nanotube film 27 are sealed between upper cover 21 and substrate 20; in use the first carbon nanotube film 23, second carbon nanotube film 25 and the 3rd carbon nanotube film 27 can not cause damage because of directly touching user; so, carbon nanotube film can be protected.
Loud speaker 200 has frequency cavity 211, intermediate frequency chamber 212 and low frequency chamber 213, the surface wave that the frequency cavity 211 varied in size, intermediate frequency chamber 212 and low frequency chamber 213 can make carbon nanotube film 23, second carbon nanotube film 25 and the 3rd carbon nanotube film 27 produce respectively has different strokes, thus makes the vicissitudinous audio mixing effect of loud speaker 200 tool.
Be understandable that, those skilled in the art also can do other change etc. and be used in design of the present invention, as long as it does not depart from technique effect of the present invention in spirit of the present invention.These changes done according to the present invention's spirit, all should be included within the present invention's scope required for protection.
Claims (7)
1. a loud speaker, comprise upper cover and substrate, described upper cover has frequency cavity, intermediate frequency chamber and low frequency chamber, the volume in described intermediate frequency chamber is greater than the volume of described frequency cavity and is less than the volume in described low frequency chamber, have in described frequency cavity and be arranged on described suprabasil high frequency driver, high-frequency electrode and the first carbon nanotube film, described high frequency driver connects described first carbon nanotube film to make described first carbon nanotube film vibration by described high-frequency electrode, have in described intermediate frequency chamber and be arranged on described suprabasil mid-driver, intermediate frequency electrode and the second carbon nanocapsule thin film, described mid-driver is vibrated to make described second carbon nanotube film by the second carbon nanotube film described in described intermediate frequency Electrode connection, described low frequency chamber has and is arranged on described suprabasil Low frequency drivers, low frequency electrode and the 3rd carbon nanotube film, described Low frequency drivers is vibrated to make described 3rd carbon nanotube film by the 3rd carbon nanotube film described in described low frequency Electrode connection, described frequency cavity, intermediate frequency chamber and low frequency chamber have micropore, described first carbon nanotube film, the vibration wave that second carbon nanotube film and the 3rd carbon nanotube film produce spreads out of through described micropore.
2. loud speaker as claimed in claim 1, it is characterized in that, described micropore is inverted V-shaped, and diametrically described substrate direction reduces gradually.
3. loud speaker as claimed in claim 1, it is characterized in that, described high-frequency electrode, intermediate frequency electrode and low frequency electrode are and are formed in described suprabasil conducting resinl, metal wire or electrically conductive ink.
4. loud speaker as claimed in claim 1, it is characterized in that, the material of described upper cover and substrate is glass, rigid plastic or metal.
5. loud speaker as claimed in claim 4, it is characterized in that, described glass is quartz glass or Pyrex.
6. loud speaker as claimed in claim 1, is characterized in that having glue between described substrate and upper cover, to seal the space between described substrate and upper cover.
7. loud speaker as claimed in claim 1, is characterized in that, described first carbon nanotube film, the second carbon nanotube film and the 3rd carbon nanotube film army comprise individual layer, two-layer or three layers of CNT (carbon nano-tube) arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310248752.5A CN104244151A (en) | 2013-06-21 | 2013-06-21 | Loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310248752.5A CN104244151A (en) | 2013-06-21 | 2013-06-21 | Loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104244151A true CN104244151A (en) | 2014-12-24 |
Family
ID=52231348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310248752.5A Withdrawn CN104244151A (en) | 2013-06-21 | 2013-06-21 | Loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104244151A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106937225A (en) * | 2017-04-17 | 2017-07-07 | 维沃移动通信有限公司 | A kind of horn structure and mobile terminal |
| CN108513244A (en) * | 2017-02-27 | 2018-09-07 | 识骅科技股份有限公司 | Carbon nanotubes composite membrane vibration and its manufacturing method for loud speaker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090196442A1 (en) * | 2008-01-31 | 2009-08-06 | Sony Ericsson Mobile Communications Ab | Low-Profile Piezoelectric Speaker Assembly |
| CN101656907A (en) * | 2008-08-22 | 2010-02-24 | 清华大学 | Sound box |
| CN201577107U (en) * | 2009-09-29 | 2010-09-08 | 华为终端有限公司 | Fixed voice terminal passing out sound laterally |
| CN102938869A (en) * | 2012-11-27 | 2013-02-20 | 山东共达电声股份有限公司 | Method for realizing small back cavity micro speaker system low frequency response through utilizing front resonant cavity |
| CN202818568U (en) * | 2012-09-07 | 2013-03-20 | Tcl通力电子（惠州）有限公司 | Sound conduction device and audio video equipment adopting the same |
-
2013
- 2013-06-21 CN CN201310248752.5A patent/CN104244151A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090196442A1 (en) * | 2008-01-31 | 2009-08-06 | Sony Ericsson Mobile Communications Ab | Low-Profile Piezoelectric Speaker Assembly |
| CN101656907A (en) * | 2008-08-22 | 2010-02-24 | 清华大学 | Sound box |
| CN201577107U (en) * | 2009-09-29 | 2010-09-08 | 华为终端有限公司 | Fixed voice terminal passing out sound laterally |
| CN202818568U (en) * | 2012-09-07 | 2013-03-20 | Tcl通力电子（惠州）有限公司 | Sound conduction device and audio video equipment adopting the same |
| CN102938869A (en) * | 2012-11-27 | 2013-02-20 | 山东共达电声股份有限公司 | Method for realizing small back cavity micro speaker system low frequency response through utilizing front resonant cavity |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108513244A (en) * | 2017-02-27 | 2018-09-07 | 识骅科技股份有限公司 | Carbon nanotubes composite membrane vibration and its manufacturing method for loud speaker |
| CN106937225A (en) * | 2017-04-17 | 2017-07-07 | 维沃移动通信有限公司 | A kind of horn structure and mobile terminal |
| CN106937225B (en) * | 2017-04-17 | 2019-12-24 | 维沃移动通信有限公司 | Horn structure and mobile terminal |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
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Application publication date: 20141224 |