CN200959667Y

CN200959667Y - Loundspeaker with pickup-free handphone for mobile acoustic equipment and amplifying and controlling circuit

Info

Publication number: CN200959667Y
Application number: CN 200520147183
Authority: CN
Inventors: 颜怀伟; 颜怀玮
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-29
Filing date: 2005-12-29
Publication date: 2007-10-10
Anticipated expiration: 2015-12-29

Abstract

Disclosed is a receiver hands-free and loudspeaker and power amplifier control circuit used in mobile voice communication device, which is consisted of by that a loudspeaker and the audio control switch of the loudspeaker which is especially designed and disposed in the utility model, a DC break and audio frequency output capacitor, a diode, a power amplifier tube and the collector of the power amplifier tube, an emitter and basal pole resistor as well as an audio frequency signal input control switch and audio frequency signal input capacitor are electrically connected in sequence; the device can be conveniently, freely and arbitrarily switched to receiver or loudspeaker mode, the device has advantages of ultrathin, ultralight, microminiaturization, high sensitivity, high power amplifier, high output power, graceful acoustics, low distortion and so on, thus the device can provide great convenience for plural aspects of performance requirements, the device can realize and satisfy that products are light and thin as well as miniature and customers can arbitrarily and freely choice receiver or loudspeaker communication mode according to the needs and hobby of customers at any time, wrong inclinations such as radiation is increased and users are harmed as well as the trouble and inconvenience caused by a headphone which is used can be avoided, the device can be widely used in light and thin, miniature as well as high acoustics electronic fields and products such as a portable computer, a vocal electronic dictionary and so on.

Description

IVR equipment Headphone and hands-free loudspeaker and power amplifier and control circuit

Because of the telephone set of the convenience of telephone set hand-free function, production and marketing manufacturer production and marketing at present all is with hand-free function basically, simultaneously, be receiver for different needs such as maintain secrecy must keep the sounding components and parts again.Traditional hand-free function mainly is to realize with corresponding power driving amplifier by installing sounding components and parts loud speaker additional, this has just increased loud speaker and weight thereof and its shared area and volume inevitably, equally also make machine volume inevitably, weight, (fact all proves with experience reliability repeatedly: under the identical prerequisite of other condition, failure rate often always becomes high-positive correlation with the number of component number) and design and the corresponding increase with difficulty of manufacturing cost, especially in the face of more and more miniaturization, ultra-thinization, the development of ultralightization and consumer market demand general trend then more demonstrate most important property such as its market competitiveness height.Receiver generally all is that impedance is very high for loud speaker, the sounding components and parts that power is very little, therefore it is difficult to replace loud speaker and function thereof, and because of the impedance height carefully makes the D.C. resistance of its coil very big with line, adding because of high impedance makes power output very low, these factors add makes its power consumption and heating also just inevitable equally very big together, so its energy utilization efficiency is very low, especially for being extensive use of, the mobile phone that quantity is extremely huge and other audio communication equipment, energy utilization efficiency is low just to be meaned must strengthen and transmits and receives power, and this just increases amount of electromagnetic radiation inevitably, particularly to the bigger electromagnetic radiation intensity of human body harm; There is a kind of wide-spread and what is called of using to replace the receiver of nearly body to reach reducing IVR equipment to comprise that mobile phone is the amount of radiation of mobile phone and intensity and to the extent of injury of human body with ear (plug) machine, actually this is not so, this way only can be strengthened but not weaken electromagnetic pollution and harm to human body and surrounding enviroment, because connect between the resistance of the electric wire of earphone and earphone voice coil loudspeaker voice coil winding and they, comprise and this machine between distributed capacitance (amount) between formed mutually one and/or a plurality of new be equivalent to the capacitance-resistance coupling and with the electromagnetic wave repeat transmitted and the receiver of induction type, promptly this moment, earphone and on line thereof were served as the antenna of strengthening propagating electromagnetic radiation, and it is more much longer than airborne antenna, the scope of laying is much also wide, the scope and the intensity of electromagnetic radiation has just been strengthened in the stack of these factors greatly, and the harm nature is just bigger wider than nearly body earphone; Also has a kind of same wide-spread and use, even ratio increase earphone is exactly to increase so-called radiation proof pad pasting to reach the electromagnetic radiation and harm purpose that weakens audio communication equipment such as mobile phone widely, this also is a kind of real erroneous tendancy that can realize that is difficult in fact, because detecting, many authoritys fact proved that most so-called radiation proof pad pastings or other so-called protection film substantially do not possess radiation protection ability, seldom even at all can not alleviate any radiation and energy thereof, even so, even if very can effectively alleviate radiation and harm, also transmitting and receiving signal strength signal intensity with sacrifice is cost, because can alleviate the means of radiation intensity mainly is nothing but shielding electromagnetic wave, this just must cause transmitting and receiving power with increasing is that cost is offset diaphragm to shielding electromagnetic waves, can't help consuming energy more, and the amount of electromagnetic radiation and the intensity that also can positive correlation ground increase human body because of the increase of amount of electromagnetic radiation and intensity are the extent of injury, also the increase because of power is significantly shortened battery life, the time that use each charging back also significantly shortens, even if reduce emission and received power to reduce electromagnetic hazard and pollution and battery consumption to improve directivity (the radio wave directivity is very strong), but this just makes that wireless audio communication device orientation is extremely strong, speech quality such as sound are suddenly big or suddenly small, smudgy, intermittent even conversation fault waits as broken string repeatedly functional reliability and other performance is greatly reduced, solution remain add high-power, so its harmful consequences is basic identical, and these factors also all can have a strong impact on the product market competition ability and serious increasing because of battery scrapped the increase of the environmental pollution that produces and use cost such as accelerating (battery of mobile phone is generally all more expensive, tens of at least even up to a hundred yuans); Increase loud speaker and can effectively reduce the electromagnetic radiation and the harm of and surrounding enviroment next to the shin, but have aforesaid such as increasing not enough problems such as components and parts and volume thereof, area, weight, cost to human body because of answering to die with respect to the remote-wireless that receiver is sayed.Obviously, innovation sounding components and parts that the low radiation hazard of the confidentiality of receiver and loud speaker if can be combined and be equipped with innovation and can (easily) control drive power amplifier, then it can not only effectively overcome the serial shortcoming of above-mentioned prior art and product, and its serial main advantages is that advantages such as the market share all are conspicuous all will finally be embodied in the market competitiveness especially.

Total be exactly the utility model for the serial problem that solves prior art and product design for the IVR equipment of one goal of the invention with Headphone and hands-free loudspeaker and power amplifier and control circuit, existing principle, scheme and major advantage are continued to introduce as after.The present invention directly utilizes receiver and the position that is had thereof, volume, area, weight with it, and get rid of and decide circle and vibrating diaphragm and iron core, change so that the vibrating diaphragm of direct sounding is integrated respectively but wire circle seldom is moving-coil and strong magnetic permanent-magnet alloy replaces, resistance is big by the superfine number of turns in line footpath is a lot of to change receiver, power consumption and heat production are all more decide circle generate an electromagnetic field earlier and magnetize iron core, the indirect sounding of vibrating diaphragm is inhaled, put to the suction, the thrust that are produced by the iron core after the magnetization again operation principle and pattern; Big and the little tonequality of integrated distortion is more true to nature and sensitivity is higher because of the moving-coil space, the number of turns few and easily increase line directly thus the resistance energy consumption and the heating littler, but it can bear and export very big audio power, not only solved receiver and decided circle little such as power, the energy consumption height, serious distortion even hoarse unpleasant to hear all difficult problems such as serious noise that the easy distortion of sound causes because of the vibrating membrane space is extremely limited when especially sound is big, also magnetic material just can obtain powerful permanent magnetic because of the superpower magnetic that adopts strong magnetic permanent-magnet alloy and have only needs seldom with same powerful magnetic reserve capability, make product of the present invention extremely easily do very for a short time, very light, very thin but its tonequality, power and sensitivity are but very excellent, thereby solved small-sized that existing product needs to be resolved hurrily, ultra-thin, ultralight, high-power and high tone quality, a serial difficult problem such as high sensitivity, be equipped with controlled easily (convenience) control power driving circuit again, just satisfactorily realized the present invention and goal of the invention thereof comprehensively for a total inventive concept.

Accompanying drawing and operation principle and advantage explanation:

Contrast accompanying drawing: Y is a loud speaker; V is the magnet of Y; Q ₁, Q ₂And Q ₃Be three moving (sound) independent of each other circles of Y, wherein: Q ₁For interior type moving-coil (is called for short inner ring, Q ₂And Q ₃Similar abbreviation), B is for reinforcing Q ₁And specially designed backplane level, Q ₂Be centre circle, Q ₃Be the outer ring; X is Q ₁And Q ₂The hollow magnetic pole; Z is that the vibrating membrane of Y is a sounding body; P is the fixed support of the Z Q that holds concurrently ₃Magnetic pole; D is a diode; J is a power tube, and c is that output (current collection) utmost point of J, base stage, the e that b is J are the emitter of J; K ₁Be audio signal input control switch, K ₁', K ₁" be respectively K ₁An end; K ₂, K ₃Be respectively Q ₁Two group winding FF ' and the audio input end F of GG ' and the control switchs of G of coil M; K ₄, K ₅Be respectively Q ₂Two group winding HH ' and the audio input end H of II ' and the control switchs of I of coil N; K ₆, K ₇Be respectively Q ₃Two group winding JJ ' and the audio input end J of LL ' and the control switchs of L of coil S; C ₁Be the audio frequency input capacitor; C ₂For every direct sum audio frequency output capacitor; R ₁Be power tube J base stage b (biasing circuit, electric current) resistor; R ₂Power supply and loading resistor for c; R ₃Resistor for the working point of the path of e and stable J.

C ₂An end and K ₂-K ₇An end be electrically connected, C ₂The other end and negative pole and c and the R of D ₂An end be electrically connected K ₂-K ₇The other end be electrically connected respectively with own corresponding F-L end, each end of F '-L ' is direct with power supply-it is ground connection that (bearing) utmost point is electrically connected, the positive pole of D and K ₁An end K ₁' be electrically connected K ₁Other end K ₁" be electrically connected with b, K ₁With R ₁And C ₁An end be electrically connected R ₁And R ₂The other end and power supply+extremely be electrically connected C ₁The other end be electrically connected (omission), R with this machine audio-source output ₃An end and e be electrically connected, R ₃Other end ground connection.

Embodiment and operation principle of the present invention and advantage supplementary notes: contrast accompanying drawing, so loud speaker Y because of adopt permanent magnetism ferromagnetic material its magnet V and magnetic core X all do very thin, general 0.2-0.5cm even more (surpass) thin promptly enough, magnetic core X makes hollow type and will move (sound) and enclose Q ₁And/or Q ₂The unsettled the top that is placed in magnetic core is the magnetic pole place, the moving-coil wall is to keep 0.1-0.2mm intermittently to be advisable with magnet core wall, because have only the magnetic line of force at magnetic pole place the most concentrated, the die magnetic force of density is the most powerful, the degree of depth of laying topmost flushes on the plane with magnetic core substantially with facial planes in the voice coil loudspeaker voice coil winding, to ensure the voice coil loudspeaker voice coil Shi Douke cutting magnetic line and produce the maximum promotion vibrating membrane i.e. power of vibration that is synchronized with the movement to greatest extent that no matter moves up and down, thereby obtaining the maximal audio power output is max volume, the shape of vibrating membrane can be a matrix, convex, plane, round, square type or other Any shape or its combined shaped all can, present embodiment is that further conserve space adopts plane, but this to be not the present invention can only adopt planar shaped (down with); Diode D with power greater than the silicon of 0.1W, withstand voltage any kind greater than 6V or germanium diode all can, present embodiment adopts good and cheap and the most widely used 1N4004 and 1N4007 etc.; Power tube J with power greater than the PNP of 0.3W, withstand voltage any kind greater than 20V or NPN pipe all can, accompanying drawing adopts 0.5-1W, withstand voltage 25-50V NPN type, gets final product as adopting the positive-negative-positive power supply polarity being opposite with the NPN type; Audio signal input control switch K ₁With the two group switches of the miniature hilted broadsword of any kind such as press-key lock fixed pattern, dial type, Electronic Control as touch or press-type etc. all can, present embodiment adopts push type, use operating maintenance etc. more simple and convenient; With K ₁As a same reason, voice coil loudspeaker voice coil K switch ₂-K ₇Also with miniature press-key lock fixed pattern but use hilted broadsword simply connected formula instead and get final product; Capacitor C ₁With the non-polar condenser of capacity greater than 0.1 μ F, withstand voltage 6-10 volt, present embodiment adopts 0.3 μ F6.3 volt, capacitor C ₂With capacity greater than the nonpolarity or electrolytic capacitor of 1 μ F all can, present embodiment adopts 10 μ F10 volt electrolytic capacitor; R ₁And R ₂Resistance with the difference at double of concrete power tube J and parameter such as multiplication factor etc. and mains voltage variations broad, obviously also just can not be in advance in concrete mode such as embodiment and stipulate its occurrence, so state reference value R ₁200 Europe-20K and R ₂20 Europe-2K use only for reference, but this does not influence the described those skilled in the art of Patent Law at all and implements this patent, because at the selected back of concrete power tube, its product description or consult reference book such as handbook and all can obtain every accurately concrete parameter, to make parameter reach optimum range also be the most basic prerequisite general knowledge and test a large amount of and commonly used is arranged equally and the detailed introduction of method of adjustment and reference book, product description etc. and record and belong to general knowledge together to adjust resistance value; As previously mentioned, because of R ₃Function mainly be stable operating point and serve as insurance (resistance) thread, and the promptly in most cases little in normal operation big variation of these functions, so it is less demanding to accuracy and accuracy, in most cases resistance is all very suitable in the interval in 0.5-2 Europe, too low stability and safety effect is poor, too high important parameters such as amplifying power influence to loud speaker and the power tube power output and the latter is bigger; All the other situations and accompanying drawing and explanation thereof, advantage are introduced similar, no longer repeat superfluous stating.

the utility model also has following serial main advantages: because the present invention integrates receiver and loudspeaker and function thereof and can freely switch and switch extremely convenient, can switch to arbitrarily at any time receiver or loudspeaker mode and need not dropped calls, single loudspeaker doubles as receiver and ultra-thin, ultralight, subminaturization (can do also little also light also thin more much than receiver earphone) and high sensitivity, high effect and high-output power and tonequality are graceful, the serial great innovation of the little grade of distortion and advantage, these advantages are for realization and meet the frivolous miniaturization of product, especially the melodious grace of tonequality and consumer's needs at any time and likes and freely select arbitrarily to converse and crucial serviceability and the consumption demand aspect of many decision market shares such as Music Appreciation mode provide very big convenience and competitiveness, as be beneficial to and correct so-called ear (plug) machine and alleviate radiation and reach erroneous tendancies such as harm to the user, because as aforementioned use earphone, not only bothering inconvenience, and real in having increased radiation and harmfulness.

The utility model integrates above-mentioned serial main advantages, so tool applications well and market prospects, as except that the above and mobile phone etc. require the frivolous small-sized low energy consumption lower calorific value application, such as wide too with the application in frivolous small-sized high tone quality electronic applications such as the notebook computer in the huge market of tool, sounding electronic dictionary and products thereof with mobile phone.

Claims

1, a kind of IVR equipment Headphone and hands-free loudspeaker, it is characterized in that ferromagnetism alloy permanent magnet connects and fixedly vibrating membrane fixed support and hollow magnetic core, the vibrating membrane fixed support connects and fixing vibrating membrane, the hollow magnetic core by interior, in, outer three groups of magnetic poles constitute, every group of magnetic pole built-in moving-coil respectively, vibrating membrane connects and fixing moving-coil, and moving-coil and winding list thereof use with, serial or parallel connection.

2, the described IVR equipment of claim 1 Headphone and hands-free loudspeaker is characterized in that vibrating membrane fixed support double as outer magnetic pole.

3, the described IVR equipment of claim 1 Headphone and hands-free loudspeaker is characterized in that the hollow magnetic core is inside and outside and place a double winding moving-coil with each.

4, the described IVR equipment of claim 1 Headphone and hands-free loudspeaker is characterized in that the double winding moving-coil is double-wire spaced, separate.

5, the described IVR equipment of claim 1 Headphone and hands-free loudspeaker is characterized in that the double winding moving-coil is divided into interior and outer two.

6, the described IVR equipment of claim 5 Headphone and hands-free loudspeaker, type double winding moving coil winding is fixed on the moving-coil inwall in it is characterized in that, and external form double winding moving coil winding is for fixing a single layer winding respectively on the moving-coil inside and outside wall.

7, the described IVR equipment of claim 6 Headphone and hands-free loudspeaker, type double winding moving-coil has backplane level in it is characterized in that.

8, a kind of IVR equipment is characterized in that: every direct sum audio frequency output capacitor (C with Headphone and hands-free loudspeaker power amplifier and control circuit ₂) an end and audio frequency input control switch (K ₂)-(K ₇) an end be electrically connected, audio frequency output capacitor (C ₂) the other end and negative pole and the collector electrode (c) of power tube (J) and the power supply and the loading resistor (R of collector electrode (c) of diode (D) ₂) an end be electrically connected audio frequency input control switch (K ₂), (K ₃) the other end respectively with moving-coil (Q with own corresponding loud speaker (Y) ₁) two group windings (FF ') of coil (M) and audio input end (F), (G) electrical connection of (GG '), the moving-coil (Q of loud speaker (Y) ₁) two group windings (FF ') of coil (M) and the audio output of (GG ') (F '), (G ') ground connection, audio frequency is imported control switch (K ₄), (K ₅) the other end respectively with moving-coil (Q with own corresponding loud speaker (Y) ₂) two group windings (HH ') of coil (N) and audio input end (H), (I) electrical connection of (II '), the moving-coil (Q of loud speaker (Y) ₂) two group windings (HH ') of coil (N) and the audio output of (II ') (H '), (I ') ground connection, audio frequency is imported control switch (K ₆), (K ₇) the other end respectively with moving-coil (Q with own corresponding loud speaker (Y) ₃) two group windings (JJ ') of coil (S) and audio input end (J), (L) electrical connection of (LL '), the moving-coil (Q of loud speaker (Y) ₃) two group windings (JJ ') of coil (S) and the audio output of (LL ') (J '), (L ') ground connection, the positive pole of diode (D) and audio signal are imported control switch (K ₁) an end (K _{1 '}) be electrically connected audio signal input control switch (K ₁) the other end (K _{1 "}) be electrically connected audio signal input control switch (K with the base stage (b) of power tube (J) ₁) with the resistor (R of the base stage (b) of power tube (J) ₁) and audio frequency input capacitor (C ₁) an end be electrically connected the resistor (R of the base stage (b) of power tube (J) ₁) and the power supply and the loading resistor (R of the collector electrode (c) of power tube (J) ₂) the other end be electrically connected audio frequency input capacitor (C with the positive terminal (+) of power supply ₁) the other end be electrically connected the resistor (R of the path of the emitter (e) of power tube (J) and the working point of stable power tube (J) with this machine audio-source output ₃) an end and the emitter (e) of power tube (J) be electrically connected, stablize the resistor (R of the working point of power tube (J) ₃) other end ground connection.

9, the described IVR equipment of claim 8 is characterized in that with Headphone and hands-free loudspeaker power amplifier and control circuit power tube is positive-negative-positive or NPN type.

10, the described IVR equipment of claim 8 is characterized in that with Headphone and hands-free loudspeaker power amplifier and control circuit diode is silicon or germanium diode.