CN101562672B - Detachable passive electromagnetic coupling talkback communication device capable of penetrating metal silo wall - Google Patents
Detachable passive electromagnetic coupling talkback communication device capable of penetrating metal silo wall Download PDFInfo
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- CN101562672B CN101562672B CN2009100274886A CN200910027488A CN101562672B CN 101562672 B CN101562672 B CN 101562672B CN 2009100274886 A CN2009100274886 A CN 2009100274886A CN 200910027488 A CN200910027488 A CN 200910027488A CN 101562672 B CN101562672 B CN 101562672B
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Abstract
The invention relates to a detachable passive electromagnetic coupling talkback communication device capable of penetrating metal silo wall. A passive talkback terminal and a talkback relay are mounted at one end of two-way talkback channels, a moving coil speaker of the passive talkback terminal is connected with a first induction coil in series, the first induction coil is wounded on a first iron core, a second induction coil of the talkback relay is wounded on a second iron core, a magnetic button is used for leading the relay to switch over direction of voice communication via a magnetic control switch, electromagnetic coupling is carried out between the first iron core wounded with coils in the passive terminal and the second iron core wounded with coils in the talkback relay to transfer acoustical signal to solve various defects of prior communication manners in the operation on special occasions and realize voice talkback communication screened by metal silo wall.
Description
Technical field
The present invention relates to the speech talkback communication device, particularly a kind of detachable passive electromagnetic coupled intercommunication communication device of energy penetrating metal silo wall.This device is applicable to objects such as boats and ships, large-scale metal closed container and shielding bin, can realize in the storehouse in and the storehouse outside personnel carry out the speech talkback communication every metal silo wall.
Background technology
In real life and work, people utilize wired or wireless communication apparatus to realize that distance exchanges with speech talkback on the space usually.Yet be subjected in the special operation of metal silo wall isolation at some, because existing means of communication can't realize that normal speech talkback exchanges, and makes troubles to work.Such as, for boats and ships, some position or get rid of twister on the screw at the bottom of the boarding ship during the maintenance personal may dive into the deep water, there is the possibility that the staff carries out the intercommunication communication in maintenance personal and the boats and ships every the ship wall this moment, conceivable communication modes is a kind of to be to knock telegraph code mutually to exchange, and another kind is that the maintenance personal swims out of the water surface and engages in the dialogue.Obviously these communication modes are all inconvenient for the maintenance personal.Again such as, at chemical industry, metallurgy and oil refining industry, often use large-scale metal closed container as storage or working equipment (as large-scale metal reaction container, large-scale metal reaction tower, the airtight intermediate frequency furnace of large-scale metal, oil storage is irritated, gas storage filling etc.), the personnel of needing repairing enter in the large-scale metal closed container and operate in maintenance and maintenance process, the problem that also exists this moment interior maintenance personal of container and the outer staff of container to carry out the intercommunication communication every metallic walls, existing intercommunication communication modes has three kinds, first kind is to knock telegraph code mutually to exchange, second kind is that the maintenance personal climbs to porch or the outer staff of container and arrives the porch interchange that engages in the dialogue in the container, and to be the maintenance personal bring in the container wire communication equipment by dragging the line interchange that engages in the dialogue into for the third.This shows that these communication modes are all inconvenient for execute-in-place.For another example, the metallic shielded room of national treasury and production or experiment usefulness, the problem that also exists indoor occupant and outdoor personnel to engage in the dialogue and exchange, obviously the wired intercom communication apparatus of arranging indoor and outdoor that burrows through walls is worthless, because the globality of so easy destruction shielded enclosure causes shield effectiveness to descend.
In a word, in the operation of above-mentioned special occasions, how to overcome the deficiency of existing intercommunication communication modes, solve preferably that to carry out speech talkback communication problem every metal silo wall be the problem that the present invention studies.
Summary of the invention
The invention provides a kind of detachable passive electromagnetic coupled intercommunication communication device of energy penetrating metal silo wall, purpose is intended to solve carries out speech talkback communication problem every metal silo wall, overcomes the deficiency of existing intercommunication communication modes.
For achieving the above object, the technical solution used in the present invention is: a kind of detachable passive electromagnetic coupled intercommunication communication device of energy penetrating metal silo wall, have the two-way intercommunication passage of wired or wireless transmit audio signals, its innovation is: the end at described two-way intercommunication passage is provided with a passive intercommunication terminal and an intercommunication relaying;
Described passive intercommunication terminal mainly is made up of coil-moving speaker, first induction coil, first iron core and magnetic push buttons, wherein, first iron core adopts " C " type or " E " type structure, and make by the permalloy sheet, first induction coil is on first iron core, corresponding two terminals that connect coil-moving speaker in the two ends of first induction coil, and the output impedance of first induction coil and coil-moving speaker impedance matching, the effect end of magnetic push buttons is provided with permanent magnet;
Described intercommunication relaying is mainly by second induction coil, second iron core, magnetic switch and electromagnetic type relay are formed, wherein, second iron core is identical with first core structure and made by the permalloy sheet, second induction coil is on second iron core, electromagnetic type relay has a pair of moving contact and two pairs of fixed contacts, coil in the electromagnetic type relay is connected with magnetic switch and is constituted the loop, a pair of moving contact connects the second induction coil two ends, two pairs of fixed contacts connect the corresponding terminals of described two-way intercommunication passage, constitute by magnetic push buttons with this to cooperate with magnetic switch by realizing the two-way intercommunication communicating circuit of single worker of electromagnetic type relay control;
Under user mode, passive intercommunication terminal is positioned at metal silo wall one side, and the intercommunication relaying is positioned at the metal silo wall opposite side, wherein, first iron core that is wound with first induction coil and second iron core that is wound with second induction coil recline with the openend of " C " type or " E " type structure and are symmetrical arranged inside and outside the metal silo wall, permanent magnet and magnetic switch correspondence position setting inside and outside metal silo wall of magnetic push buttons effect end constitute the detachable passive electromagnetic coupled intercommunication communication device of energy penetrating metal silo wall with this simultaneously.
The related content of technique scheme is explained as follows:
1, in the such scheme, described " two-way intercommunication passage " with wired or wireless transmit audio signals, wherein, " wired or wireless " is meant that the load mode of audio signal adopts wire transmission or wireless transmission, wireless transmission can realize that these all are prior art by radio receiving transmitting module." two-way intercommunication passage " is meant by two audio signals with directivity and transmits passage, a passage supplies the staff of metal silo wall one side to propaganda directed to communicate, the work of opposite side is listened to, another passage is propagandaed directed to communicate for the staff of metal silo wall opposite side, the work of one side is listened to, and these two passages are by realizing the two-way intercommunication of single worker by switching.
2, in the such scheme, described " penetrating metal silo wall " wherein " penetrates " and is meant that the employing directional magnetic field is delivered to the other side of metal silo wall with audio signal, need not to destroy the globality of metal silo wall; " metal silo wall " is meant the metal silo wall of paramagnetism and ferrimagnet, and the inapplicable the present invention of diamagnetism metal silo wall.Present alloy material great majority have paramagnetism, and it is ferromagnetic having only a few metals such as Fe, Co, Ni, so this device all can be suitable for the exhausted big metal silo wall of counting.
3, in the such scheme, why passive intercommunication terminal adopts coil-moving speaker (dynamic speaker), its reason is owing to do not have power supply (passive) in the passive intercommunication terminal, therefore at work when the other side propagandas directed to communicate, coil-moving speaker serves as loud speaker, and coil-moving speaker uses as receiver again after switching the intercommunication passage.Coil-moving speaker is made up of three parts usually: 1. vibrational system comprises taper cone, voice coil loudspeaker voice coil and centring disk etc.; 2. magnetic circuit system comprises permanent magnet, magnetic conductive board and a stem etc.; 3. auxiliary system comprises basin frame, terminal block, flanging and dust cap etc.When the voice coil loudspeaker voice coil in being in magnetic field has tone currents to pass through, just produce the magnetic field that changes with tone currents, the magnetic field of this magnetic field and permanent magnet interacts, make voice coil loudspeaker voice coil along axial vibration, drive the cone vibration and sound, when there is sound in the external world, acoustical vibration drives the cone vibration, make voice coil loudspeaker voice coil along axial vibration, cutting magnetic line just produces the frequency induction electric current that changes with acoustical vibration.
4, in the such scheme, described " permalloy " English is permalloy.Permalloy refers to iron-nickel alloy, and the wide range of its nickel content is between 35%-90%.The maximum characteristics of permalloy are to have very high low-intensity magnetic field permeability.Their saturation induction density between 0.6--1.0T, is to be celebrated to have high magnetic permeability and low coercive force in low-intensity magnetic field the earliest generally.The simplest permalloy is the alloy that two kinds of elements of iron nickel are formed, and by suitable rolling and heat treatment, they can possess high permeability, simultaneously also can reasonably combined iron and the content of nickel, obtain than higher saturation induction density.But the resistivity of this permalloy is low, and mechanical property is bad, so practical application is not a lot.The permalloy of widely applying is to add some other element, for example molybdenum, copper etc. on the basis of iron nickel at present.The purpose of adding these elements is the resistivity that increases material, to reduce to make the eddy current loss behind the iron core.Simultaneously, add the hardness that element also can improve material, this is particularly advantageous in the application that wearing and tearing are arranged as magnetic head etc.The permalloy trade mark of China is 1JXX.Wherein, J represents " Precise Alloy ", " 1 " expression soft magnetism, and the numeral of back is a sequence number, the nickel content in the ordinary representation alloy.Nickel content is low nickel alloy between 30%～50%, as 1J30,1J34,1J50, the 1J51 etc. of China.Nickel content is Langaloy between 65%～85%, as 1J66,1J79,1J80,1J85,1J86, the 1J88 etc. of China.Permalloy has high permeability, low-coercivity, electromagnetic conversion efficient height.Hot rolling or cold-reduced silicon sheet belong to ferro-silicium, are applicable to that the following occasion of 400Hz uses, and permalloy is just accord with and is suitable for 300～3400Hz audio frequency.
5, in the such scheme, described " output impedance of first induction coil and coil-moving speaker impedance matching ", the output impedance that is meant first induction coil equates with the impedance of coil-moving speaker, can reach impedance matching by adjusting the first induction coil length, the maximization of realization through-put power helps passive intercommunication terminal and takes passive design.
6, in the such scheme, described electromagnetic type relay has a pair of moving contact and two pairs of fixed contacts, moving contact refers to the moving contact of armature, when the coil two ends add certain voltage, will flow through certain electric current in the coil, thereby produce galvanomagnetic effect, armature will overcome the pulling force of return spring and inhale to iron core under the effect of electromagnetic attracting force, finish the switched conductive of a moving contact between two fixed contacts, realize the two-way intercommunication communication of single worker.In the present invention, a pair of moving contact is meant two moving contacts, be used to connect the second induction coil two ends, two pairs of fixed contacts are meant four fixed contacts, every pair is made of two fixed contacts, wherein a pair of fixed contact is used for connecting two terminals of an intercommunication direction passage of two-way intercommunication passage, and another is used to connect two terminals of another intercommunication direction passage to fixed contact.
7, in the such scheme, described magnetic switch, be a kind ofly to switch the element of open and-shut mode, such as tongue tube, when the permanent magnet on the magnetic push buttons during near tongue tube by the action of a magnetic field, the magnetic field that permanent magnet produced makes two tongue magnetization of tongue tube, one of them tongue generates the N utmost point on contact position, generate the S utmost point on the contact position of another tongue, if the magnetic attraction that generates has overcome the resistance that tongue elasticity produces, tongue is attracted power effect contact conducting, i.e. closing of circuit; In case magnetic field force is eliminated, tongue separates again because of the elastic force effect, and promptly circuit disconnects.Magnetic switch of the present invention is not limited to tongue tube, can adopt the magnetic switch of other type in the prior art.
8, in the such scheme, the second induction coil length is 1～3.5 times of the first induction coil length, in this proportion, and magnetic field coupling performance the best of second induction coil and first induction coil.
Design concept of the present invention is to utilize the electromagnetic coupled principle, in metal silo wall one side passive intercommunication terminal is set, opposite side is provided with the intercommunication relaying, be wound with the electromagnetic coupled between the iron core of coil in iron core by being wound with coil in the passive intercommunication terminal and the intercommunication relaying, realize the speech communication of penetrating metal silo wall.
Because the technique scheme utilization, the present invention compared with prior art has following advantage:
1, the present invention utilizes electromagnetic coupled to transmit voice signal, therefore can realize the speech communication of penetrating metal, has solved radio communication and has had the blind area, and the defective of line is used in wire communication.
2, the electromagnetic coupled between passive intercommunication terminal of the present invention and the intercommunication relaying still can form effective magnetic field coupling circuit when penetrating more than 3 millimeters the metal silo wall wall thickness, dynamically transmitting audio signal without distortion.
3, the passive intercommunication terminal and the intercommunication relaying of the present invention's use are spatially separable, and both are easy to carry and are easy for installation, are fit to multiple occasion and use.
4, the passive intercommunication terminal of the present invention adopts passive design, need not to use the power supply power supply, can realize long-time communication, and simple in structure, in light weight, is easy to carry.
5, on the basis of the present invention, can utilize ZAP, be further developed into the device of transmitting digital information and data.
Description of drawings
Accompanying drawing 1 is an embodiment of the invention schematic diagram.
In the above accompanying drawing: 1, passive intercommunication terminal; 2, intercommunication relaying; 3, metal silo wall; 4, coil-moving speaker; 5, first induction coil; 6, first iron core; 7, intercommunication switching push button; 8, second induction coil; 9, second iron core; 10, magnetic switch; 11, electromagnetic type relay, 12, armature; 13, moving contact; 14, fixed contact; 15, fixed contact; 16, preamplifier; 17, power amplifier; 18, permanent magnet; 19, loudspeaker; 20, loud speaker; 21, receiver.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment: a kind of detachable passive electromagnetic coupled intercommunication communication device of energy penetrating metal silo wall
As shown in Figure 1, this intercommunication communication device comprises a passive intercommunication terminal 1, an intercommunication relaying 2 and a match circuit.
Described passive intercommunication terminal 1 is by mainly by coil-moving speaker 4, first induction coil 5, first iron core 6 and magnetic push buttons 7 are formed, corresponding two terminals that connect coil-moving speaker 4 in the two ends of first induction coil 5, can change the resistance value of coil by the length of regulating first induction coil 5, reach impedance matching with coil-moving speaker 4, first iron core 6 adopts " C " type structure, it adopts model is that the permalloy sheet of 1J85 is made, first induction coil 5 is on first iron core 6, the effect end of magnetic push buttons 7 is provided with permanent magnet 18, to the operation of magnetic push buttons 7 permanent magnet 18 is seesawed.Passive intercommunication terminal 1 can be provided with housing, and coil-moving speaker 4, first induction coil 5, first iron core 6 and magnetic push buttons 7 are installed in the housing, and wherein the press-side of magnetic push buttons 7 stretches out housing, so that operation.
Described intercommunication relaying 2 mainly is made up of second induction coil 8, second iron core 9, magnetic switch 10 and electromagnetic type relay 11, wherein, second iron core 9 adopts " C " type structure identical with first iron core, 6 structures, material also is the permalloy sheet of 1J85, second induction coil 8 is on iron core 9, and the length of second induction coil 8 is first induction coil, 5 length
Doubly, reach the magnetic field coupling performance of second induction coil and first induction coil the best, magnetic switch 10 adopts tongue tube, electromagnetic type relay 11 has a pair of moving contact 13 and two pairs of fixed contacts 14,15, wherein, a pair of moving contact 13 is made of two moving contacts, and be positioned on the armature 12 of electromagnetic type relay 11, a pair of fixed contact 14 is made of two fixed contacts, and a pair of fixed contact 15 is made of two fixed contacts.Coil in the electromagnetic type relay 11 is connected with magnetic switch 10 and is constituted the loop, a pair of moving contact 13 connects second induction coil, 8 two ends, a pair of fixed contact 14 is used for connecting two terminals of an intercommunication direction passage of two-way intercommunication passage, a pair of fixed contact 15 is used to connect two terminals of another intercommunication direction passage, constitutes by magnetic push buttons 7 with this to cooperate with magnetic switch 10 by realizing the two-way intercommunication communicating circuit of single worker of electromagnetic type relay 11 controls.Intercommunication relaying 2 can be provided with housing, and second induction coil 8, second iron core 9 and magnetic switch 10 are installed in the housing, and electromagnetic type relay 11 can be installed in the housing, also can be installed in outside the housing.
Described match circuit mainly is made up of preamplifier 16 and power amplifier 17, preamplifier 16 is used to handle the voice signal from passive intercommunication terminal 1 to another intercommunication terminal, and preamplifier 16 is connected and constitutes preposition amplification between a pair of fixed contact 14 and another intercommunication terminal.Power amplifier 17 is used to handle the voice signal from another intercommunication terminal to passive intercommunication terminal 1, and power amplifier 17 is connected between a pair of fixed contact 15 and another intercommunication terminal and constitutes power amplification.Another intercommunication terminal can be utilized existing loudspeaker 19, carries out work by loud speaker 20 and receiver 21 (microphone).
Under user mode, passive intercommunication terminal 1 is positioned at metal silo wall 3 one sides, and intercommunication relaying 2 is positioned at metal silo wall 3 opposite sides, wherein, first iron core 6 that is wound with first induction coil 5 and second iron core 9 that is wound with second induction coil 8 recline with the openend of " C " type structure and are symmetrical arranged inside and outside the metal silo wall 3, and the permanent magnet 18 of magnetic push buttons 7 effect ends and magnetic switch 10 are in metal silo wall 3 inside and outside correspondence position settings simultaneously.Do not pressing under magnetic push buttons 7 states, the permanent magnet 18 of magnetic push buttons 7 effect ends is relatively away from the tongue tube as magnetic switch 10, this moment, tongue tube presented open-circuit condition, and a pair of moving contact 13 in the electromagnetic type relay 11 is connected with a pair of fixed contact 15, and passive intercommunication terminal 1 is in the state of answering.The staff who is positioned at intercommunication relaying 2 sides can propaganda directed to communicate by receiver 21, second induction coil 8 that audio electrical signal is delivered in the intercommunication relaying 2 by loudspeaker 19, power amplifier 17, electromagnetic type relay 11 is converted to field signal, the magnetic field that second iron core of making by the 1J85 iron-nickel alloy sheet 9 produces high magnetic flux density, directed penetrating metal silo wall 3, first iron core 6 receives field signal in the passive intercommunication terminal 1, be converted to audio electrical signal by first induction coil 5, drive coil-moving speaker 4 and sound.
When the user of passive intercommunication terminal 1 need reply, press magnetic push buttons 7, the permanent magnet 18 of the magnetic push buttons 7 effect end early work that connects is the tongue tube of magnetic switch 10, this moment, tongue tube presented closure state, electromagnetic type relay 11 interior loop will flow through certain electric current, thereby produce magnetic field adhesive armature 12, and a pair of moving contact 13 in the electromagnetic type relay 11 is connected with a pair of fixed contact 14, disconnect with a pair of fixed contact 15 simultaneously, passive intercommunication terminal 1 is in the state of propagandaing directed to communicate.At this moment, the staff who is positioned at passive intercommunication terminal 1 side can propaganda directed to communicate, sound is converted to audio electrical signal by coil-moving speaker 4, this audio electrical signal is converted to field signal by first induction coil 5 again, the magnetic field that first iron core of making by the 1J85 iron-nickel alloy sheet 6 produces high magnetic flux density, directed penetrating metal silo wall 3, second iron core 9 receives field signal in the intercommunication relaying 2, be converted to audio electrical signal by second induction coil 8, transmit audio electrical signal through preamplifier 16, finally drive loud speaker 20 and sound by loudspeaker 19.
After the user of passive intercommunication terminal 1 propagandas directed to communicate and finishes, decontrol magnetic push buttons 7, tongue tube presents original open-circuit condition immediately, cause the current vanishes in electromagnetic type relay 11 interior loop, the suction-combining force in magnetic field also disappears thereupon, armature 12 drives a pair of moving contact 13 and connects with a pair of fixed contact 15 under the effect of spring, disconnect with a pair of fixed contact 14 simultaneously, and passive intercommunication terminal 1 returns to the original state of answering.
The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (3)
1. the detachable passive electromagnetic coupled intercommunication communication device of an energy penetrating metal silo wall, two-way intercommunication passage with wired or wireless transmit audio signals, described two-way intercommunication passage is meant by two audio signals with directivity and transmits passage, a passage supplies the staff of metal silo wall one side to propaganda directed to communicate, the staff of opposite side listens to, another passage is propagandaed directed to communicate for the staff of metal silo wall opposite side, the staff of one side listens to, and these two passages are realized the two-way intercommunication of single worker by switching; Described penetrating is meant that the employing directional magnetic field is delivered to the other side of metal silo wall with audio signal; Described metal silo wall is meant the metal silo wall of paramagnetism and ferrimagnet, it is characterized in that: the end at described two-way intercommunication passage is provided with a passive intercommunication terminal (1) and an intercommunication relaying (2);
Described passive intercommunication terminal (1) mainly is made up of coil-moving speaker (4), first induction coil (5), first iron core (6) and magnetic push buttons (7), wherein, first iron core (6) adopts " C " type or " E " type structure, and make by the permalloy sheet, first induction coil (5) is on first iron core (6), corresponding two terminals that connect coil-moving speaker (4) in the two ends of first induction coil (5), and the output impedance of first induction coil (5) and coil-moving speaker (4) impedance matching, the effect end of magnetic push buttons (7) is provided with permanent magnet (18);
Described intercommunication relaying (2) is mainly by second induction coil (8), second iron core (9), magnetic switch (10) and electromagnetic type relay (11) are formed, wherein, second iron core (9) is identical with first iron core (6) structure and made by the permalloy sheet, second induction coil (8) is on second iron core (9), electromagnetic type relay (11) has a pair of moving contact and two pairs of fixed contacts, coil in the electromagnetic type relay (11) is connected with magnetic switch (10) and is constituted the loop, a pair of moving contact connects second induction coil (8) two ends, two pairs of fixed contacts connect the corresponding terminals of described two-way intercommunication passage, constitute by magnetic push buttons (7) with this to cooperate with magnetic switch (10) by realizing the two-way intercommunication communicating circuit of single worker of electromagnetic type relay (11) control;
Under user mode, passive intercommunication terminal (1) is positioned at metal silo wall (3) one sides, and intercommunication relaying (2) is positioned at metal silo wall (3) opposite side, wherein, first iron core (6) that is wound with first induction coil (5) and second iron core (9) that is wound with second induction coil (8) recline with the openend of " C " type or " E " type structure and are symmetrical arranged inside and outside the metal silo wall (3), the permanent magnet (18) of while magnetic push buttons (7) effect end and magnetic switch (10) correspondence position setting inside and outside metal silo wall (3) constitute the detachable passive electromagnetic coupled intercommunication communication device of energy penetrating metal silo wall with this.
2. intercommunication communication device according to claim 1 is characterized in that: second induction coil (8) length is 1～3.5 times of first induction coil (5) length.
3. intercommunication communication device according to claim 1 is characterized in that: described permalloy is selected one of 1J79,1J80,1J85,1J86,1J88 material.
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| CN2009100274886A CN101562672B (en) | 2009-05-08 | 2009-05-08 | Detachable passive electromagnetic coupling talkback communication device capable of penetrating metal silo wall |
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| CN102427390A (en) * | 2011-11-15 | 2012-04-25 | 福建星海通信科技有限公司 | Internal and external communication equipment of closed metal cabin, system and method |
| CN104219613B (en) * | 2014-03-20 | 2017-11-10 | 江苏多维科技有限公司 | A kind of magneto-resistor audio collection device |
| CN105071886B (en) * | 2015-08-24 | 2017-12-19 | 苏州华启智能科技有限公司 | A kind of vehicle-mounted broadcasting system audio bus-sharing system |
| CN109596147A (en) * | 2019-02-04 | 2019-04-09 | 光驰科技(上海)有限公司 | A kind of vacuum coating proximity sensor resistant to high temperature |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200959656Y (en) * | 2005-12-29 | 2007-10-10 | 颜怀伟 | Internal magnetic and moving coil loundspeaker with pickup-free earphone |
| CN200959650Y (en) * | 2005-12-29 | 2007-10-10 | 颜怀伟 | Hollow magnetic-core internal magnetic-pole loundspeaker |
| CN101346012A (en) * | 2008-08-21 | 2009-01-14 | 陈坚胜 | Coil driven loudspeaker |
-
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200959656Y (en) * | 2005-12-29 | 2007-10-10 | 颜怀伟 | Internal magnetic and moving coil loundspeaker with pickup-free earphone |
| CN200959650Y (en) * | 2005-12-29 | 2007-10-10 | 颜怀伟 | Hollow magnetic-core internal magnetic-pole loundspeaker |
| CN101346012A (en) * | 2008-08-21 | 2009-01-14 | 陈坚胜 | Coil driven loudspeaker |
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Effective date of registration: 20110513 Address after: 215000 No. 306, Pingjiang Road, Jiangsu, Suzhou Applicant after: Suzhou Jianghai Communication Development Industry Co., Ltd. Address before: 215001 No. 306, Pingjiang Road, Jiangsu, Suzhou Applicant before: Zhou Jinghua Co-applicant before: Fan Wensheng Co-applicant before: Kongque-Xintianyou Electronics Co., Ltd., Suzhou |