CN101771917B - Sounding device - Google Patents
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- CN101771917B CN101771917B CN 200810191735 CN200810191735A CN101771917B CN 101771917 B CN101771917 B CN 101771917B CN 200810191735 CN200810191735 CN 200810191735 CN 200810191735 A CN200810191735 A CN 200810191735A CN 101771917 B CN101771917 B CN 101771917B
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Abstract
The invention relates to a sounding device which comprises a first side plate, a second side plate, a plurality of first electrodes, a plurality of second electrodes and a thermal sounding film. The sounding device further comprises a first conducting plate, a second conducting plate and a plurality of insulators, wherein the first conducting plate is fixed to the first side plate, and the second conducting plate is fixed to the second side plate; the first electrodes and the second electrodes are alternately arranged between the first side plate and the second side plate at intervals; the first electrodes are electrically connected with the first conducting plate and electrically insulated with the second conducting plate by the insulators; the second electrodes are electrically connected with the second conducting plate and electrically insulated with the first conducting plate by the insulators; and the thermal sounding film is electrically connected with the first electrodes and the second electrodes. The sounding device is beneficial to the mass production and applies the thermal sounding film.
Description
Technical field
The present invention relates to a kind of sound-producing device, relate in particular to a kind of sound-producing device based on hot sounding film.
Background technology
Sound-producing device generally is comprised of signal input apparatus and sounding component., and then sound to sounding component by the signal input apparatus input signal.Thermo-acoustic device is a kind of in sound-producing device, it is a kind of sound-producing device based on thermoacoustic effect, see also document " The Thermophone ", EDWARD C.WENTE, Vol.XIX, No.4, p333-345 and " On Some Thermal Effects of ElectricCurrents ", William Henry Preece, Proceedings of the Royal Society of London, Vol.30, pp408-411 (1879-1881).The document discloses a kind of thermo-acoustic device, and this thermo-acoustic device is realized sounding by pass into alternating current in a conductor.
H.D.Arnold and I.B.Crandall are at document " The thermophone as a precision sourceof sound ", Phys.Rev.10, introduced a kind of simple thermo-acoustic device in p22-38 (1917), it adopts a platinized platinum to make hot sounding film.Because audible frequency and its unit are thermal capacitance of hot sounding film are closely related.The unit are thermal capacitance is large, audible frequency narrow range, and intensity is low; The unit are thermal capacitance is little, audible frequency wide ranges, and intensity is high.Wish obtains to have the sound wave of wider audible frequency scope and higher-strength, requires the unit are thermal capacitance of sounding component to heal better little.The restriction that held by bill of materials plane accumulated heat adopts this platinized platinum to do that the audible frequency of sound-producing device of hot sounding film is the highest only can reach 4 KHz, and the audible frequency scope of this sound-producing device is narrower.
Since the early 1990s, (see also Helical microtubules of graphiticcarbon with carbon nano-tube, Nature, Sumio Iijima, vol 354, p56 (1991)) caused that with its unique structure and character people pay close attention to greatly for the nano material of representative.In recent years, along with deepening continuously of carbon nano-tube and nano materials research, its wide application prospect constantly displayed.For example, the performances such as the electromagnetism of the uniqueness that has due to carbon nano-tube, optics, mechanics, chemistry, a large amount of relevant its application studies in fields such as field emitting electronic source, transducer, novel optical material, soft ferromagnetic materials constantly are in the news.
The people such as Fan Shoushan disclose a kind of sound-producing device of using hot sounding film, see also document " Flexible; Stretchable; Transparent Carbon Nanotube Thin FilmLoudspeakers ", model is kept kind et al., Nano Letters, Vol.8 (12), p 4539-4545 (2008).This sound-producing device comprises a supporting construction, and a plurality of the first electrodes and a plurality of the second electrode alternate intervals are arranged at this supporting construction.One hot sounding film is around these a plurality of first electrodes and a plurality of the second electrode setting, and is electrically connected to described a plurality of the first electrodes and a plurality of the second electrode.Be connected with an electrode of signal input apparatus after adopting plain conductor that all first electrodes are electrically connected to; Be connected with another electrode of signal input apparatus after adopting plain conductor that the second all electrodes is electrically connected to, thereby realize to this sound-producing device input signal, make it sounding.The hot sounding film of the sound-producing device of the hot sounding film of above-mentioned employing is carbon nano-tube film, and this sound-producing device adopts the plain conductor connecting electrode, and this connected mode was adopted by the laboratory research stage.If above-mentioned sound-producing device will carry out large-scale production, need further improvement.
Summary of the invention
In view of this, necessaryly provide a kind of sound-producing device that is conducive to the hot sounding film of application of large-scale production.
A kind of sound-producing device, it comprises: one first side plate and one second side plate, a plurality of the first electrodes and a plurality of the second electrode, a hot sounding film.Described sound-producing device further comprises one first conducting strip, one second conducting strip and a plurality of insulator.Described the first conducting strip is fixed in described the first side plate, and described the second conducting strip is fixed in described the second side plate.Described a plurality of the first electrode and a plurality of the second electrode alternate intervals are arranged between described the first side plate and described the second side plate.These a plurality of first electrodes are electrically connected to described the first conducting strip, and by described a plurality of insulators and described the second conducting strip electric insulation, these a plurality of second electrodes are electrically connected to described the second conducting strip, and by described a plurality of insulators and described the first conducting strip electric insulation.Described hot sounding film is electrically connected to described a plurality of the first electrodes and a plurality of the second electrode.
A kind of sound-producing device, it comprises: a plurality of the first electrodes and a plurality of the second electrode, and a hot sounding film.Described sound-producing device further comprises one first conducting strip, one second conducting strip and a plurality of insulator.Described a plurality of the first electrode and a plurality of the second electrode alternate intervals are arranged between this first conducting strip and the second conducting strip.Described a plurality of the first electrode is electrically connected to described the first conducting strip, and by described insulator and described the second conducting strip electric insulation.Described a plurality of the second electrode is electrically connected to described the second conducting strip, and by described insulator and described the first conducting strip electric insulation, this hot sounding film is electrically connected to described a plurality of the first electrodes and a plurality of the second electrode.
Compared to prior art, described sound-producing device has the first conducting strip and the second conducting strip, and described a plurality of the first electrodes are electrically connected to described the first conducting strip, and with described the second conducting strip electric insulation; Described a plurality of the second electrode is electrically connected to the second conducting strip, and with described the first conducting strip electric insulation.Above-mentioned connected mode has reduced the volume of this sound-producing device, is conducive to the encapsulation of this sound-producing device, makes this sound-producing device can large-scale production, is conducive to the commercialization of this sound-producing device.
Description of drawings
Fig. 1 is the three-dimensional exploded view of the sound-producing device that provides of first embodiment of the invention.
Fig. 2 is the perspective view of the framework of the sound-producing device that provides of first embodiment of the invention.
Fig. 3 is the structural representation of the first conducting strip of the sound-producing device that provides of first embodiment of the invention.
Fig. 4 is the three-dimensional exploded view of the sound-producing device that provides of second embodiment of the invention.
Fig. 5 is the three-dimensional exploded view of the sound-producing device that provides of third embodiment of the invention.
Embodiment
Describe below with reference to accompanying drawing the sound-producing device that the embodiment of the present invention provides in detail.
See also Fig. 1, first embodiment of the invention provides a kind of sound-producing device 10, and this sound-producing device 10 comprises a framework 14, a plurality of the first electrode 104, a plurality of the second electrode 105, a plurality of insulator 145, one first conducting strip 16a, one second conducting strip 16b and a hot sounding film 12.
Described a plurality of the first electrode 104 and a plurality of the second electrode 105 alternate intervals are arranged at described framework 14, and a plurality of the first electrode 104 and a plurality of the second electrode 105 two ends are supported by described framework 14.Between every two the first adjacent electrodes 104, second electrode 105 is set.Described the first electrode 104 is parallel with described the second electrode 105, and between every two the second adjacent electrodes 105, first electrode 104 is set.Distance between every two adjacent one the first electrodes 104 and second electrode 105 equates.Described a plurality of the first electrode 104 is electrically connected to described the first conducting strip 16a respectively, and by described a plurality of insulators 145 and described the second conducting strip 16b electric insulation.Described a plurality of the second electrode 105 respectively with described the second conducting strip 16b be electrically connected to, and by described insulator 145 and described the first conducting strip 16a electric insulation.
Described hot sounding film 12 is layed in these a plurality of first electrodes 104 and a plurality of the second electrode 105 and is electrically connected to these a plurality of first electrodes 104 and a plurality of the second electrode 105.Audio electrical signal passes through described the first conducting strip 16a and the second conducting strip 16b and described a plurality of the first electrode 104 and a plurality of the second electrode 105 hot sounding films 12 of input, thereby realizes sounding.
See also Fig. 2, described framework 14 is made by insulating material, and this insulating material is glass, pottery, resin, wood materials, quartz or plastics etc.In the present embodiment, the material of this framework 14 is resin.This framework 14 comprises end to end the first side plate 142, the second side plate 146, the 3rd side plate 144 and the 4th side plate 148.In the present embodiment, this first side plate 142, the second side plate 146, the 3rd side plate 144 and the 4th side plate 148 are one-body molded.And the parallel interval setting relative with the second side plate 146 of the first side plate 142, and the 3rd side plate 144 is relative with the 4th side plate 148 and the parallel interval setting.Space 13 of described the first side plate 142, the second side plate 146, the three side plate 144, the four side plates 148 common formation.This first side plate 142 is identical with size, the shape of the second side plate 146, and the 3rd side plate 144 is identical with size, the shape of the 4th side plate 148.
In the present embodiment, the first side plate 142 of described framework 14 is formed with a groove 149 away from the surface of the second side plate 146, is used for accommodating described the first conducting strip 16a.Be formed with four the first through hole 141a, three installing holes 143 and four insulators 145 in the bottom surface of this groove 149, these four insulators 145 are cylinder.This first through hole 141a and insulator 145 alternate intervals settings, this insulator 145 is one-body molded with described framework 14.The core of each insulator 145 runs through this first side plate 142 and is formed with one second through hole 141b.Every two adjacent one the first through hole 141a equate with distance between second a through hole 141b.
Described the second side plate 146 is similar with the structure of described the first side plate 142, and this second side plate 146 also is formed with a groove (not shown) away from the surface of the first side plate 142, is used for accommodating described the second conducting strip 16b.Be formed with four the first through hole 141a, three installing holes 143 and four insulator (not shown) in the bottom surface of this groove 149.This first through hole 141a and insulator alternate intervals arrange, and this insulator and described framework 14 are one-body molded.The first through hole 141a on this second side plate 146 respectively with the first side plate 142 on the second through hole 141b over against.The core of insulator runs through this second side plate 146 and is formed with one second through hole 141b, the first through hole 141a on this second through hole 141b and the first side plate 142 over against.
The insulator that is appreciated that described the first side plate 142 and the second side plate 146 is not limited to framework 14 one-body molded, also can be an individual component, and available binding agent is fixed in described the first side plate 142 and the second side plate 146 with this insulator.
See also Fig. 3, described the first conducting strip 16a and described the second conducting strip 16b are laminated structure, and structure, shape, the material of the structure of described the first conducting strip 16a, shape, material and described the second conducting strip 16b are identical.The material of described the first conducting strip 16a can be metal or alloy, a kind of as in gold, silver, copper, iron, nickel, palladium or platinum, the perhaps alloy of above metal.The first conducting strip 16a described in the present embodiment and described the second conducting strip 16b are the rectangle sheet metal, and material is copper, and the shape of this sheet metal and described groove 149 are complementary.
Described the first conducting strip 16a is formed with a plurality of conductive holes 164, a plurality of insulated hole 166 and a plurality of fixing hole 162.The first adjacent through hole 141a on distance between this conductive hole 164 and insulated hole 166 alternate intervals settings, this adjacent conductive hole 164 and insulated hole 166 and the first side plate 142 equates with the distance between the second through hole 141b.Described a plurality of fixing hole 162 is used for described the first conducting strip 16a is fixed in described support frame 14.The structure of the structure of described the second conducting strip 16b and the first conducting strip 16a is identical.
In the present embodiment, described the first conducting strip 16a and the second conducting strip 16b offer respectively four conductive holes 164, three fixing holes 162 and four insulated hole 166.Described the first conducting strip 16a is contained in the groove 149 of described the first side plate 142, the insulator 145 of the first side plate 142 is arranged at respectively in the insulated hole 166 of this first conducting strip 16a, the conductive hole 164 of the first through hole 141a of the first side plate 142 and this first conducting strip 16a over against, the installing hole 143 of the first side plate 142 and the fixing hole 162 of this first conducting strip 16a over against, use a plurality of bolts to pass respectively a plurality of fixing holes 162 of the first conducting strip 16a and a plurality of installing holes 143 of described the first side plate 142 are fixed in this first side plate 142 with this first conducting strip 16a.By identical mode, described the second conducting strip 16b is fixed in described the second side plate 146.
The material of described the first electrode 104 and the second electrode 105 can be metal or alloy, as one or more in stainless steel, copper, iron, cobalt, nickel, platinum or palladium, is perhaps the alloy of above-mentioned metal.The material of described the first electrode 104 and the second electrode 105 can also consist of for other electric conducting material, as the carbon nano tube line of conductivity.That the shape of this first electrode 104 and the second electrode 105 may be selected to be is bar-shaped, a kind of in strip, bulk or other shape.In the present embodiment, the material of described the first electrode 104 and the second electrode 105 is stainless steel, is shaped as elongated bar bar-shaped.
See also Fig. 1, Fig. 2 and Fig. 3, in the present embodiment, this sound-producing device 10 comprises four the first electrodes 104 and four the second electrodes 105.
One end of described four the first electrodes 104 is arranged in respectively the first through hole 141a of described the first side plate 142 and the conductive hole 164 of described the first conducting strip 16a, and these four the first electrodes 104 are welded on respectively this first conducting strip 16a, these four the first electrodes 104 are electrically connected to this first conducting strip 16a; The other end of these four the first electrodes 104 is arranged in the second through hole 141b of described the second side plate 146, these four first electrodes 104 and described the second conducting strip 16b electric insulation.
One end of described four the second electrodes 105 is arranged in respectively the first through hole 141a of described the second side plate 146 and the conductive hole 164 of described the second conducting strip 16b, and these four the second electrodes 105 are welded on respectively this second conducting strip 16b, these four the second electrodes 105 are electrically connected to this second conducting strip 16b; The other end of this second electrode 105 is arranged in the second through hole 141b of described the first side plate 142, with described the first conducting strip 16a electric insulation.Every two adjacent one the first electrodes 104 equate with distance between second electrode 105.
Be appreciated that, the electric connection mode of described a plurality of electrode and described conducting strip is not limited to this embodiment, described a plurality of electrodes directly can be welded on described conducting strip, the mode that also can be threaded connection is fixed in conducting strip with electrode, as long as can realize being electrically connected to of electrode and conducting strip.
Be appreciated that fixed form that described the first conducting strip 16a and described the second conducting strip 16b are fixed in described framework 14 is not limited to bolt and fixes.Can also use binding agent that the first conducting strip 16a and described the second conducting strip 16b are bonded in described groove 149, perhaps can also adopt the fixing mode of buckle that the first conducting strip 16a and described the second conducting strip 16b are fixed on described framework 14.
Be appreciated that in the present embodiment, described insulator 145 is optional structure, and when described the first side plate 142 and the second side plate 146 did not comprise insulator 145, described the first conducting strip 16a and the second conducting strip 16b can not offer insulated hole 166.And realize in the following manner the first electrode 104 and described the first conducting strip 16a electric insulation, and second electrode 105 and described the second conducting strip 16b electric insulation, that is: an end of described the first electrode 104 being worn the Shen goes out described the first side plate 142 and is electrically connected to by welding with described the first conducting strip 16a, the other end of this first electrode 104 is arranged in described the second side plate 146, this end does not penetrate the second side plate 145, therefore can with described the second conducting strip 16b electric insulation; One end of described the second electrode 105 is worn the Shen to be gone out described the second side plate 146 and is electrically connected to by welding with described the second conducting strip 16b, the other end of this second electrode 105 is arranged in described the first side plate 142, this end does not penetrate the first side plate 104, therefore can with described the first side plate 104 electric insulations.
Described hot sounding film 12 can directly be layed in described a plurality of the first electrode 104 and described a plurality of the second electrode 105, and is electrically connected to these a plurality of first electrodes 104 and a plurality of the second electrode 105.Described a plurality of the first electrode 104 and described a plurality of the second electrode 105 also play the effect that hot sounding film 12 is supported.Audio electrical signal is by the first conducting strip 16a, the second conducting strip 16b of this sound-producing device 10, and a plurality of the first electrode 104 and a plurality of the second electrode 105 hot sounding films 12 of input, thereby realizes sounding.
Described hot sounding film 12 comprises a carbon nano tube structure.This carbon nano tube structure is stratiform, wire or other shape, and has larger specific area.This carbon nano tube structure comprises at least one carbon nano-tube film, at least one liner structure of carbon nano tube or its combination.When described carbon nano tube structure only comprised one deck carbon nano-tube film, the transparency of this carbon nano tube structure was higher.When described carbon nano tube structure comprised the carbon nano-tube film of a plurality of overlapping layings, the pliability of this carbon nano tube structure was higher.The thickness of described carbon nano tube structure (being diameter during linear structure) is 0.5 nanometer～1 millimeter.Preferably, the thickness of this carbon nano tube structure is 0.5 micron.The unit are thermal capacitance of described carbon nano tube structure can be less than 2 * 10
-4Every square centimeter of Kelvin of joule.Preferably, the unit are thermal capacitance of described carbon nano tube structure is less than 1.7 * 10
-6Every square centimeter of Kelvin of joule.Carbon nano-tube in described carbon nano tube structure comprises one or more in Single Walled Carbon Nanotube, double-walled carbon nano-tube and multi-walled carbon nano-tubes.The diameter of described Single Walled Carbon Nanotube is 0.5 nanometer～50 nanometers, and the diameter of described double-walled carbon nano-tube is 1.0 nanometers～50 nanometers, and the diameter of described multi-walled carbon nano-tubes is 1.5 nanometers～50 nanometers.
In the present embodiment, described carbon nano tube structure as hot sounding film 12 comprises a carbon nano-tube film.Carbon nano-tube is arranged of preferred orient in this carbon nano tube structure in the same direction.Described carbon nano-tube film directly is layed in described a plurality of the first electrode 104 and a plurality of the second electrode 105, and supports by these a plurality of first electrodes 104 and a plurality of the second electrode 105.
Because the carbon nano tube structure in sound-producing device 10 is comprised of equally distributed carbon nano-tube, and this carbon nanometer has larger specific area, therefore this carbon nano tube structure has larger specific area, and less unit are thermal capacitance and larger heat-delivery surface.After the input audio electrical signal, carbon nano tube structure heating and cooling rapidly produce periodic variations in temperature, and carry out fast heat exchange with surrounding medium, make surrounding medium density cycling change, and then sound.
The working media of described hot sounding film 12 is not limit, and only need satisfy its resistivity and get final product greater than the resistivity of described hot sounding film 12.Described medium comprises gaseous medium or liquid medium.Described gaseous medium comprises air.Described liquid medium comprises one or more in non-electrolytic solution, water and organic solvent etc.The sound pressure level of the sound-producing device 10 that the embodiment of the present invention provides is greater than 50 decibels of every watt of sound pressure levels, and the audible frequency scope is 1 hertz to 100,000 hertz (being 1Hz-100kHz).The distortion factor to the 40000 hertz frequency scopes can be less than 3% at 500 hertz for described sound-producing device.
Be appreciated that the groove 149 on the first side plate 142 described in the present embodiment and the second side plate 146 is optional structure.When groove 149 not being set on described the first side plate 142 and the second side plate 146, described the first conducting strip 16a and described the second conducting strip 16b also can be directly fixed on described the first side plate 142 and described the second side plate 146.
In the present embodiment, described the first conducting strip 16a and the second conducting strip 16b are fixed in support frame 14.A plurality of the first electrodes 104 are electrically connected to the first conducting strip 16a, and with described the second conducting strip 16b electric insulation; A plurality of the second electrodes 105 are electrically connected to the second conducting strip 16b, and with described the first conducting strip 16a electric insulation.Above-mentioned connected mode; reduced the volume of this sound-producing device; be conducive to the encapsulation of this sound-producing device; make this sound-producing device can large-scale production; thereby but this sound-producing device is applied in the device of other sounding, but as microphone devices such as sound equipment, mobile phone, MP3, MP4, TV, computers.
See also Fig. 4, second embodiment of the invention provides a sound-producing device 20, this sound-producing device 20 comprises one first conducting strip 26a, one second conducting strip 26b, one first side plate 242, one second side plate 246, a plurality of the first electrode 204, a plurality of the second electrode 205, a plurality of insulator 245 and a hot sounding film 22.
In described the first conducting strip 26a and the second conducting strip 26b and the first embodiment, the first conducting strip 16a and the second conducting strip 16b structure are identical, and this first conducting strip 26a and the second conducting strip 26b offer respectively a plurality of fixing holes 262, conductive hole 264 and a plurality of insulated hole 266.
The first side plate 142 in described the first side plate 242 and the second side plate 246 and the first embodiment and the second side plate 146 structures are basic identical, be formed with respectively a groove 249 on this first side plate 242 and the second side plate 246, the bottom surface of this groove 249 offers a plurality of the first through hole (not shown), a plurality of the second through hole (not shown) and a plurality of installing hole 243.
The first side plate 142 in described the first side plate 242 and the second side plate 246 and the first embodiment and the difference of the second side plate 146 are, described a plurality of insulator 245 is not one-body molded with described the first side plate 242 and the second side plate 246, these a plurality of insulators 245 are respectively a cylinder, are fixed in described the first side plate 242 and the second side plate 246 by binding agent respectively.The material of this insulator 245 is glass, pottery, resin, wood materials, quartz or plastics.In the present embodiment, the material of this insulator 245 is plastics.
Described a plurality of the first electrode 204 and a plurality of the second electrode 205 alternate intervals are arranged between described the first side plate 242 and the second side plate 246, and support by described the first side plate 242 and the second side plate 246.Between every two the first adjacent electrodes 204, second electrode 205 is set, between every two the second adjacent electrodes 205, first electrode 204 is set.Described the first electrode 204 is parallel with described the second electrode 205, and the distance between every two adjacent one the first electrodes 204 and second electrode 205 equates.Described a plurality of the first electrode 204 is electrically connected to described the first conducting strip 26a respectively, and by described a plurality of insulators 245 and described the second conducting strip 26b electric insulation.Described a plurality of the second electrode 205 is electrically connected to described the second conducting strip 26b respectively, and by described a plurality of insulators 245 and described the first conducting strip 26a electric insulation.
In the present embodiment, this sound-producing device 20 comprises four the first electrodes 204 and four the second electrodes 205.
One end of described four the first electrodes 204 is arranged in respectively the first through hole of described the first side plate 242 and the conductive hole 264 of described the first conducting strip 26a, and these four the first electrodes 204 are welded on respectively this first conducting strip 26a, these four the first electrodes 204 are electrically connected to this first conducting strip 26a; The other end of these four the first electrodes 204 is arranged in the second through hole of described the second side plate 246, these four first electrodes 204 and described the second conducting strip 26b electric insulation.
One end of described four the second electrodes 205 is arranged in respectively the first through hole of described the second side plate 246 and the conductive hole 264 of described the second conducting strip 26b, and these four the second electrodes 205 are welded on respectively this second conducting strip 26b, these four the second electrodes 205 are electrically connected to this second conducting strip 26b; The other end of this second electrode 205 is arranged in the second through hole 241b of described the first side plate 242, with described the first conducting strip 26a electric insulation.Every two adjacent one the first electrodes 204 equate with distance between second electrode 205.
Described hot sounding film 22 is carbon nano tube structure, this carbon nano tube structure comprises at least one carbon nano-tube film, this carbon nano tube structure is layed in described a plurality of the first electrode 204 and described a plurality of the second electrodes 205, and is electrically connected to these a plurality of first electrodes 204 and a plurality of the second electrode 205.Audio electrical signal passes through described the first conducting strip 26a, the second conducting strip 26b and described the first electrode 204 and the second electrode 205 hot sounding films 22 of input, thereby realizes sounding.
See also Fig. 5, third embodiment of the invention provides a sound-producing device 30, and this sound-producing device 30 comprises one first conducting strip 36a, one second conducting strip 36b, a plurality of the first electrode 304, a plurality of the second electrode 305, a plurality of insulator 345 and a hot sounding film 32.
Described the first electrode 304 and the second electrode 305 alternate intervals are arranged between described the first conducting strip 36a and described the second conducting strip 36b, and support by described the first conducting strip 36a and the second conducting strip 36b.Between every two the first adjacent electrodes 304, second electrode 305 is set, between every two the second adjacent electrodes 305, first electrode 304 is set, the distance between every two adjacent one the first electrodes 304 and second electrode 205 equates.Described the first electrode 304 is electrically connected to described the first conducting strip 36a, and by described insulator 345 and described the second conducting strip 36b electric insulation.Described the second electrode 305 is electrically connected to described the second conducting strip 36b, and by described insulator 345 and described the first conducting strip 36a electric insulation.
In the present embodiment, the structure of described the first conducting strip 36a and the second conducting strip 36b and the first conducting strip 16a in the first embodiment and the second conducting strip 16b structure are basic identical, this the first conducting strip 36a and the second conducting strip 36b offer a plurality of conductive holes 364 and a plurality of insulated hole 366, described a plurality of insulator 345 is arranged in described insulated hole 366, and is bonded in this insulated hole 366 by binding agent.
One end of described a plurality of the first electrodes 304 inserts respectively the conductive hole 364 of described the first conducting strip 36a, and should be welded on this first conducting strip 36a by a plurality of the first electrodes 304, and these a plurality of first electrodes 304 are electrically connected to this first conducting strip 36a respectively; The other end of these a plurality of the first electrodes 304 inserts respectively the interior insulator 345 of a plurality of insulated hole 366 on described the second conducting strip 36b, makes this a plurality of the first electrodes 304 and described the second conducting strip 36b electric insulations.
One end of described a plurality of the second electrodes 305 inserts respectively the interior insulator 345 of a plurality of insulated hole 366 on described the first conducting strip 36a, makes this a plurality of the second electrodes 305 and described the first conducting strip 36a electric insulations; The other end of these a plurality of the second electrodes 305 inserts respectively the conductive hole 364 of described the second conducting strip 36b, and should be welded on this second conducting strip 36b by a plurality of the second electrodes 304, and these a plurality of second electrodes 305 are electrically connected to this second conducting strip 36b.
Be appreciated that described a plurality of the first electrode 304 and a plurality of the second electrode 305 can also be arranged between described the first conducting strip 36a and the second conducting strip 36b in the following manner:
Also can not offer conductive hole 364 at described the first conducting strip 36a and the second conducting strip 36b, and an end of described a plurality of the first electrodes 304 directly is welded on respectively on described the first conducting strip 36a, the other end of these a plurality of the first electrodes 304 inserts respectively the interior insulator 345 of insulated hole 366 on described the second conducting strip 36b.These a plurality of first electrodes 304 are electrically connected to, with this second conducting strip 36b electric insulation with described the first conducting strip 36a.One end of described a plurality of the second electrodes 304 directly is welded on respectively on described the second conducting strip 36b, and the other end of these a plurality of the second electrodes 304 inserts respectively the interior insulator 345 of a plurality of insulated hole 366 on described the first conducting strip 36a.These a plurality of second electrodes 305 are electrically connected to, with described the first conducting strip 36a electric insulation with described the second conducting strip 36b.
Described hot sounding film 32 is carbon nano tube structure, and this carbon nano tube structure comprises that at least one carbon nano-tube is thin.This carbon nano tube structure is layed in described a plurality of the first electrode 304 and described a plurality of the second electrodes 305, and is electrically connected to these a plurality of first electrodes 304 and a plurality of the second electrode 305.Audio electrical signal passes through described the first conducting strip 36a, the second conducting strip 36b and described a plurality of the first electrode 304 and a plurality of the second electrode 305 hot sounding films 32 of input, thereby realizes sounding.
The sound-producing device that the embodiment of the present invention provides has the first conducting strip and the second conducting strip, and described a plurality of the first electrodes are electrically connected to described the first conducting strip, and with described the second conducting strip electric insulation; Described a plurality of the second electrode is electrically connected to the second conducting strip, and with described the first conducting strip electric insulation.Above-mentioned connected mode; reduced the volume of this sound-producing device; be conducive to the encapsulation of this sound-producing device; make this sound-producing device can large-scale production; thereby but this sound-producing device is applied in the device of other sounding, but as microphone devices such as sound equipment, mobile phone, MP3, MP4, TV, computers.
In addition, those skilled in the art also can do other variations in spirit of the present invention, and certainly, the variation that these are done according to spirit of the present invention is within all should being included in the present invention's scope required for protection.
Claims (14)
1. sound-producing device, it comprises:
One first side plate and one second side plate;
A plurality of the first electrodes and a plurality of the second electrode alternate intervals arrange; And
One hot sounding film is electrically connected to described a plurality of the first electrodes and a plurality of the second electrode;
it is characterized in that, described sound-producing device further comprises one first conducting strip, one second conducting strip and a plurality of insulator, described the first conducting strip and the second conducting strip are formed with respectively a plurality of insulated hole, described a plurality of insulator is arranged at respectively described insulated hole, described the first conducting strip is fixed in described the first side plate, described the second conducting strip is fixed in described the second side plate, described a plurality of the first electrode and a plurality of the second electrode alternate intervals are arranged between described the first side plate and described the second side plate, one end of described a plurality of the first electrodes is arranged in respectively described the first side plate and is fixed in described the first conducting strip and is electrically connected to this first conducting strip, the other end of these a plurality of the first electrodes is arranged in respectively insulator and described the second conducting strip electric insulation in described the second side plate and described the second conducting strip insulated hole, one end of described a plurality of the second electrodes is arranged in respectively described the second side plate and is fixed in described the second conducting strip and is electrically connected to described the second conducting strip, and the other end of described a plurality of the second electrodes is arranged in respectively insulator and described the first conducting strip electric insulation in described the first side plate and described the first conducting strip insulated hole.
2. sound-producing device as claimed in claim 1, is characterized in that, described a plurality of the first electrodes and a plurality of the second electrode parallel interval arrange, and every two the first adjacent electrodes equate with spacing between the second electrode.
3. sound-producing device as claimed in claim 1, it is characterized in that, described sound-producing device further comprises one the 3rd side plate and one the 4th side plate, and the 3rd side plate and the 4th side plate parallel interval arrange, and with described the first side plate and the second side plate formation framework that joins end to end.
4. sound-producing device as claimed in claim 1, is characterized in that, described a plurality of insulators are individually fixed in described the first side plate and described the second side plate.
5. sound-producing device as claimed in claim 1, it is characterized in that, described the first side plate and the second side plate are formed with respectively a groove, and described the first conducting strip is contained in the groove of described the first side plate, and described the second conducting strip is contained in the groove of described the second side plate.
6. sound-producing device as claimed in claim 1, is characterized in that, described a plurality of the first electrodes and a plurality of the second electrode are strip or bar-shaped.
7. sound-producing device as claimed in claim 1, is characterized in that, the material of described a plurality of the first electrodes and a plurality of the second electrodes is metal or alloy.
8. sound-producing device as claimed in claim 1, is characterized in that, described a plurality of the first electrodes and a plurality of the second electrode are carbon nano tube line, and this carbon nano tube line comprises a plurality of carbon nano-tube along the axial ordered arrangement of this carbon nano tube line.
9. sound-producing device, it comprises:
A plurality of the first electrodes and a plurality of the second electrode alternate intervals arrange; And
One hot sounding film is electrically connected to described a plurality of the first electrodes and a plurality of the second electrode;
it is characterized in that, described sound-producing device further comprises one first conducting strip, one second conducting strip and a plurality of insulator, described the first conducting strip and the second conducting strip are formed with respectively a plurality of insulated hole, described a plurality of insulator is arranged at respectively described insulated hole, described the first conducting strip and described the second conducting strip parallel interval arrange, described a plurality of the first electrode and a plurality of the second electrode parallel interval are arranged between described the first conducting strip and the second conducting strip, one end of described a plurality of the first electrodes wears respectively and is fixed in described the first conducting strip, and be electrically connected to this first conducting strip, the other end of described a plurality of the first electrodes is arranged in respectively insulator and described the second conducting strip electric insulation in described the second conducting strip insulated hole, one end of described a plurality of the second electrodes wears respectively and is fixed in described the second conducting strip and is electrically connected to described the second conducting strip, and the other end of described a plurality of the second electrodes wears respectively insulator and described the first conducting strip electric insulation in described the first conducting strip insulated hole.
10. sound-producing device as claimed in claim 9, is characterized in that, described a plurality of insulators are individually fixed in described a plurality of insulated hole by binding agent.
11. sound-producing device as claimed in claim 9, it is characterized in that, the mode that one end of described a plurality of the first electrodes is electrically connected to described the first conducting strip respectively, and the mode that is electrically connected to described the second conducting strip respectively of an end of described a plurality of the second electrodes, for be threaded, welding or one-body molded.
12. sound-producing device as claimed in claim 9 is characterized in that, every two adjacent described the first electrodes equate with distance between described the second electrode.
13. sound-producing device as described in claim 1 or 9 is characterized in that, described hot sounding film is a carbon nano tube structure, and this carbon nano tube structure comprises at least one carbon nano-tube film.
14. sound-producing device as described in claim 1 or 9 is characterized in that, described the first electrode and the second electrode are elongated strip shaped.
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810191735 CN101771917B (en) | 2008-12-30 | 2008-12-30 | Sounding device |
| US12/655,398 US8325947B2 (en) | 2008-12-30 | 2009-12-30 | Thermoacoustic device |
| US12/661,108 US8306246B2 (en) | 2008-12-30 | 2010-03-11 | Thermoacoustic device |
| US12/661,106 US8315414B2 (en) | 2008-12-30 | 2010-03-11 | Thermoacoustic device |
| US12/661,132 US8311244B2 (en) | 2008-12-30 | 2010-03-11 | Thermoacoustic device |
| US12/661,148 US8315415B2 (en) | 2008-12-30 | 2010-03-11 | Speaker |
| US12/661,109 US8300856B2 (en) | 2008-12-30 | 2010-03-11 | Thermoacoustic device |
| US12/661,149 US8345896B2 (en) | 2008-12-30 | 2010-03-11 | Thermoacoustic device |
| US12/661,925 US8238586B2 (en) | 2008-12-30 | 2010-03-25 | Thermoacoustic device |
| US12/756,872 US8325949B2 (en) | 2008-12-30 | 2010-04-08 | Thermoacoustic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810191735 CN101771917B (en) | 2008-12-30 | 2008-12-30 | Sounding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101771917A CN101771917A (en) | 2010-07-07 |
| CN101771917B true CN101771917B (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810191735 Active CN101771917B (en) | 2008-12-30 | 2008-12-30 | Sounding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101771917B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9689973B2 (en) * | 2012-12-28 | 2017-06-27 | Koninklijke Philips N.V. | Acoustic probe with components of acoustic elements having different pitches than each other |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2894181Y (en) * | 2006-03-22 | 2007-04-25 | 周坤养 | Electrostatic loudspeaker with metal bar as electrode |
-
2008
- 2008-12-30 CN CN 200810191735 patent/CN101771917B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2894181Y (en) * | 2006-03-22 | 2007-04-25 | 周坤养 | Electrostatic loudspeaker with metal bar as electrode |
Non-Patent Citations (1)
| Title |
|---|
| Lin Xiao et al..《Flexible，Stretchable，Transparent Carbon Nanotube Thin Film Loudspeakers》.《NANO LETTERS》.2008,第8卷(第12期),第4539-4540页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101771917A (en) | 2010-07-07 |
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