CN1236287A - Capacitive speaker composed of plastic and conductive liquid and its producing method - Google Patents
Capacitive speaker composed of plastic and conductive liquid and its producing method Download PDFInfo
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- CN1236287A CN1236287A CN 99116481 CN99116481A CN1236287A CN 1236287 A CN1236287 A CN 1236287A CN 99116481 CN99116481 CN 99116481 CN 99116481 A CN99116481 A CN 99116481A CN 1236287 A CN1236287 A CN 1236287A
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- vibrating diaphragm
- plastics
- plastic
- conductivity
- fixed electrode
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Abstract
The speaker consists of a vibration membrane of superthin polymer plastic of 10 to the power 4 -10 to the power 7 ohm/cm conductivity, a vibration membrane fixing ring of plastic with conductivity lower than 10 to the power 7 ohm/cm, and fixed electrodes, which are cavity made of insulating plastic with conductivity not lower than 10 to the power 12 ohm/cm and filled with conductive liquid. It has excellent performance, low cost and simple making process and is suitable for production in large scale.
Description
The present invention relates to the electroacoustic transducer technical field, relate to a kind of condenser loudspeaker and production method that combines by plastics and conducting liquid especially.
To the retrieval of prior art document, find direct identical any patent with the present invention.But can think: No. 9916367.2 Chinese patent application partly are relevant with electrode among the present invention.This patent application relates to a kind of liquid fixed electrode of condenser loudspeaker, its special feature is the insulation cavity that this electrode comprises sealing, the insulated cavity perfusion in vivo has electrically conductive liquid material, on the wall of the chamber of cavity, be equipped with cavity in the electrically conductive liquid material conducting draw electric conductor.The scheme of this patent application is close with the application's electrode scheme, and note: the applicant of this patent promptly is the applicant of present patent application.
Electroacoustic transducer before the present invention---in the technical field of loud speaker class, all loud speakers; Comprise that loud speakers such as piezoelectric type, electromagnetic type, electrodynamic type, electric capacity (static) formula, Haier's formula, ionic formula all be unable to do without metal material, and its metal material is to constitute the loud speaker critical piece.The metal parts of the loud speaker of nearly all electroacoustic transduction all possesses two specific characters: the one, and its metal parts is essential, and is indispensable.The 2nd, the great majority in these metal partss are easy to oxidation, must carry out anti-oxidation processing.In addition, the major part of the loud speaker of present widely used electroacoustic transduction is with magnetic material.
Well-knownly be: non-metallic fully and loud speaker non-magnetic material is significant for some sciemtifec and technical sphere and military use.We know that also because the popularity that loud speaker uses, the loud speaker fabrication scheme also is extremely significant cheaply.
The objective of the invention is to propose the condenser loudspeaker that a kind of usefulness is nonmetal and non-magnetic material is made, make its cost lower, function admirable, production technology is simple, is fit to industrialized mass.
At the foregoing invention purpose, the present invention adopts following technical scheme: a kind of condenser loudspeaker that is combined by plastics and conducting liquid, form by vibrating diaphragm, vibrating diaphragm retainer plate and fixed electrode, wherein fixed electrode adopts and makes cavity by ambroin, in be full of the liquid fixed electrode of conducting liquid, special character of the present invention is that to adopt conductivity be 10 to described vibrating diaphragm
4-10
7The macromolecule ultra-thin plastic films of Ω/cm is made, and described vibrating diaphragm retainer plate adopts conductivity≤10
7The plastics of Ω/cm are made, the conductivity of described liquid fixed electrode plastic chamber 〉=10
12Ω/cm.
Another goal of the invention of the present invention is in order to propose a kind of production method of producing above-mentioned condenser loudspeaker.
This goal of the invention of the present invention is achieved by the following technical solution.A kind of production method of the condenser loudspeaker that is combined by plastics and conducting liquid, its special character are that the production method of described vibrating diaphragm is to add the gastral cavity yl amine derivatives of 3-4% or add 2-3% fatty acid amide analog derivative to make in the TPO high molecule plastic; The production method of described vibrating diaphragm retainer plate is to add 2-4% alkyl amine derivative or add 2-4% Sulfonates material in methymethacrylate class plastics to make in the polystyrene type plastics.
By above description to technical solution of the present invention as can be seen: all material of the present invention constitutes by plastics and conducting liquid, is fully non-metallic and non-magnetic.Its composed component is simple, and lower cost for material is easy to industrialized mass production.
Below in conjunction with the accompanying drawing illustrated embodiment, describe the present invention in detail.
Fig. 1 is STRUCTURE DECOMPOSITION figure of the present invention.
Fig. 2 is a general assembly schematic diagram of the present invention.
Fig. 3 is a vibrating diaphragm retainer plate front view.
Fig. 4 is the A-A cutaway view of Fig. 3.
Fig. 5 is the B-B cutaway view of Fig. 3.
Fig. 6 is the fixed electrode front view.
Fig. 7 is the A-A cutaway view of Fig. 6.
Fig. 8 is the B-B cutaway view of Fig. 6.
Fig. 9 is a K place partial enlarged drawing among Fig. 6.
Figure 10 is a user mode reference diagram of the present invention.
With reference to Fig. 1, vibrating diaphragm 1 is TPO macromolecule plastic film (as the high density polyethylene (HDPE) ultrathin film), and its thickness designs as required, and reference value is 2-6 μ m (being applicable to medium-high frequency) or 7-12 μ m (being applicable to medium and low frequency), and the conductivity of vibrating diaphragm is 10
4-10
7Within Ω/cm scope.It should be noted: this film should customize, because the volume resistance of commercially available TPO plastic film is all than higher, generally 3 * 10
10-3 * 10
15Ω/cm scope is insulator.And the vibrating diaphragm of condenser loudspeaker is to need to supply with high voltage direct current, to guarantee that it is well-known in this technical field assembling electric charge on the vibrating diaphragm, form electric field.Experiment shows: conductivity is 10
4-10
7The plastic film of Ω/cm can be assembled electric charge well, and (adopt aluminized plastic film with the conventional condenser loud speaker, its conductivity is≤10
-2The low resistance film of Ω/cm compares 10
4-10
7The high resistance membrane of Ω/cm is behind the direct current that adds high pressure, and it is more stable to assemble electric charge, and performance is better than the low resistance film).Obtain 10
4-10
7The method of the high resistant conducting film of Ω/cm is: when the prescription of preparation plastic film (is example with the density polyethylene film with high prescription), the gastral cavity yl amine derivatives or the 2-3% fatty acid amide analog derivative that add about 3-4% in raw material get final product.The high resistance film that obtains with the synthetic method of this kind and conventional condenser loud speaker adopt method at macromolecule plastic film surface applied or dipping high impedance electric conducting material (as the portioned product of Japanese sony company, the Chinese Wuhan method that portioned product adopted along safe electronics corporation) to compare stronger, the more excellent performance of high resistant vibrating diaphragm durability of synthesizing.2a, 2b are the vibrating diaphragm retainer plates, make with conductive polystyrene type plastics or with methymethacrylate class plastics.The purpose that requires the vibrating diaphragm retainer plate to possess conductive characteristic is that the vibrating diaphragm retainer plate is actually the extraction electrode of vibrating diaphragm, and this electrode is connected with dc high-voltage, must possess conductivity.In conventional art, the vibrating diaphragm retainer plate is generally made (as the portioned product of Japanese sony company, the portioned product of Britain Quad company, the portioned product of U.S. Martln-Logan company, the scheme that China takes along the portioned product of safe company) with copper coin or iron plate, must carry out anti-oxidation coating chemical industry and handle.Clearly, cost, technology that the cost of employing plastic material is lower than metal material are simpler, and can reduce pollution.Obtain≤10
7The method of the vibrating diaphragm conductive ring that Ω/cm plastics are made is: when adopting the polystyrene type thermoplastic material, and thermoplastic shaping behind the alkylamine derivative of adding 2-4% in composition of raw materials.When adopting methymethacrylate class plastics, thermoplastic shaping behind the sulfonate of adding 2-4% in composition of raw materials.3a, 3b are fixed electrodes, are made up of plastic chamber, electrically conductive liquid material (4a, 4b) and the rubber stopper (5a, 5b) etc. of sealing (non-leakage).Wherein, plastic chamber is plate, and the hole for the loud speaker entrant sound is arranged on the flat board, and hole shape can be the hole, garden, can also be the hole of bar shaped or the hole of other shape.With respect to sound penetrating hole, dull and stereotyped interior cavity is the garden tubulose or the square tube type of radiation or fence shape, communicates between the tube and tube, to guarantee that the conducting liquid in the whole cavity is the liquid electrode of an integral body.It should be noted: the plastic chamber body wall of sealing should stay an aperture that communicates with cavity, and this hole promptly is the hand-hole of conducting liquid, is again the passage that conducting liquid is connected with audio signal.Plastic chamber is with 〉=10
10Transparent thermoplastic material injection mouldings such as the methymethacrylate class of Ω/cm.As can be seen, plastic chamber is the carrier of conducting liquid, also is the insulation crust of conducting liquid.Described conducting liquid (4a, 4b) is made with salt solution class material, and the ratio of regulating salt in the conducting liquid can obtain different conductivity.In conventional art, fixed electrode all is to adopt metallic plate or deposited copper insulation board (plate of the copper sheet of precoating on glass mat or epoxy resin board surface) through cold-punching molding basically, makes after repeatedly accurate punching and the complicated chemical industry insulation processing.Obviously, the technical scheme that makes up with thermoplastic shaping and the very cheap saline solution of cost replaces conventional art, and the complexity of its technology, material cost, processing cost have all obtained significantly descending, and insulation property are better, are more suitable for industrialized mass production.
Fig. 2 is a loud speaker general assembly schematic diagram of the present invention.General assembly program and matters needing attention are as follows:
With syringe conducting liquid (4a, 4b) is directly injected in 3a, the 3b (filling with), the sealing of rubber stopper (5a, 5b) gluing is non-leakage to guarantee, like this, 3a, 3b promptly become complete fixed electrode.
The area of vibrating diaphragm 1 should cover the surface area of vibrating diaphragm retainer plate 2a or 2b fully, and making vibrating diaphragm 1 and vibrating diaphragm retainer plate 2a, 2b with conducting resinl is tight on vibrating diaphragm retainer plate 2a and 2b as scheming closely to contact and make vibrating diaphragm 1.
Fixed electrode 3a, 3b such as figure are bonded on vibrating diaphragm retainer plate 3a, the 3b.
Fig. 3 to Fig. 5 is the cured retainer plate schematic diagram that shakes, and analyzes for convenient, has given A-A (laterally) and B-B (vertically) profile, and the below aperture is the hole that connects high-voltage DC power supply in the middle of this figure.
Fig. 6 to Fig. 9 is the fixed electrode structure chart, and this figure is except that having given A-A (laterally) and B-B9 (vertically) profile, and the details K of the inlet of liquid towards electric conducting material and rubber stopper amplifies processing.
Fig. 2 makes the liquid formula of the moulding condenser loudspeaker of a function admirable to being to pass through preferably, need not change to it and can realize the present invention to Fig. 9.
Figure 10 is a condenser loudspeaker user mode reference diagram of the present invention.As figure the high voltage direct current of 1-5KV being connected with vibrating diaphragm conductive electrode (vibrating diaphragm retainer plate) 2a, 2b, (method of attachment can be used the gong bolt, can also use conductive adhesive), make and assemble electric charge on the vibrating diaphragm 1 and form electric field, (method of attachment can be adopted and will make the needle-like of hard from the lead front end of audio signal source, and its rubber stopper 5a, 5b that pierces through fixed electrode is made it reliably to contact with conducting liquid 4a, 4b) is connected with fixed electrode 3a the positive and negative electrode of audio signal respectively with 3b.After above-mentioned connection is finished, by the audio frequency transformer input audio signal, because audio signal has changed the electric field strength of vibrating diaphragm 1, simultaneously again since the pulsating voltage that audio signal is brought changed 1 and 3a and 1 and 3b between electric field, the extremely light vibrating diaphragm 1 of quality will be with the variation of electric field vibration sounding.
Though the present invention has been made detailed explanation and diagram, the details that the present invention is not limited to illustrate is because can also make the modification that some does not depart from its spirit and scope to the present invention.For example replace saline solution (4a, 4b) with liquid mercury.Therefore, this explanation school bag has been received character narrate and all modifications within the scope and the form that can sum up in the point that claim.
Claims (2)
1, a kind of condenser loudspeaker that combines by plastics and conducting liquid, form by vibrating diaphragm, vibrating diaphragm retainer plate and fixed electrode, wherein fixed electrode adopts and to make cavity by ambroin, in be full of the liquid fixed electrode of conducting liquid, feature of the present invention is that to adopt conductivity be 10 to described vibrating diaphragm
4The macromolecule ultra-thin plastic films of-107 Ω/cm is made, and described vibrating diaphragm retainer plate adopts conductivity≤10
7The plastics of Ω/cm are made, the conductivity of described liquid fixed electrode plastic chamber 〉=10
12Ω/cm.
2, a kind of production method of the condenser loudspeaker that is combined by plastics and conducting liquid, the production method that it is characterized in that described vibrating diaphragm are to add the gastral cavity yl amine derivatives of 3-4% or add 2-3% fatty acid amide analog derivative to make in the TPO high molecule plastic; The production method of described vibrating diaphragm retainer plate is to add 2-4% alkyl amine derivative or add 2-4% Sulfonates material in methymethacrylate class plastics to make in the polystyrene type plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99116481 CN1236287A (en) | 1999-05-24 | 1999-05-24 | Capacitive speaker composed of plastic and conductive liquid and its producing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99116481 CN1236287A (en) | 1999-05-24 | 1999-05-24 | Capacitive speaker composed of plastic and conductive liquid and its producing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1236287A true CN1236287A (en) | 1999-11-24 |
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ID=5279288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99116481 Pending CN1236287A (en) | 1999-05-24 | 1999-05-24 | Capacitive speaker composed of plastic and conductive liquid and its producing method |
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|---|---|
| CN (1) | CN1236287A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100510731C (en) * | 2006-11-22 | 2009-07-08 | 武汉大学 | Micro channel electrode and miniflow control analysis chip thereof |
| CN108296227A (en) * | 2018-02-06 | 2018-07-20 | 钱月珍 | Solution dust-extraction unit |
-
1999
- 1999-05-24 CN CN 99116481 patent/CN1236287A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100510731C (en) * | 2006-11-22 | 2009-07-08 | 武汉大学 | Micro channel electrode and miniflow control analysis chip thereof |
| CN108296227A (en) * | 2018-02-06 | 2018-07-20 | 钱月珍 | Solution dust-extraction unit |
| CN108296227B (en) * | 2018-02-06 | 2021-03-02 | 广州筑巢美容有限公司 | Solution dust collector |
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Owner name: LIU TIEQIAO Free format text: FORMER OWNER: GUAN RONG Effective date: 20030315 |
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Inventor after: Liu Tieqiao Inventor before: Guan Rong Inventor before: Huang Lanling |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20030315 Address after: 430014, Lane 4, Shengli Street, Jiang'an District, Hubei, Wuhan, Taixing Applicant after: Liu Tieqiao Address before: 430014, Lane 4, Shengli Street, Jiang'an District, Hubei, Wuhan, Taixing Applicant before: Guan Rong |
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| AD01 | Patent right deemed abandoned | ||
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