CN1812644A - High-sound quality double-magnetic pole double-moving coil type loudspeaker with high-conversion rate electric-acoustic - Google Patents

Abstract

A high sound quality loudspeaker of double magnetic pole and double movable coil type is composed of vibration film and its fixing rack, alloy permanent magnet, hollow magnetic core and double magnetic pole with two corresponding voice coils .It is featured as using said rack also as external magnetic pole, using both internal and external spaces or only one space of said core to lay two double winding voice coils of internal and external ones fixing winding of internal one on internal wall of movable coil with baseboard and fixing winding of the other one on internal and external wall of movable coil separately .

Description

Electroacoustic high-conversion rate high tone quality double-magnetic pole double-moving coil type loud speaker

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 electroacoustic high-conversion rate high tone quality double-magnetic pole double-moving coil type loud speaker that the present invention designs for the serial problem that solves prior art and product for one goal of the invention, 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 has satisfactorily realized the present invention and goal of the invention for a total inventive concept comprehensively.

Accompanying drawing and operation principle and advantage explanation:

Contrast accompanying drawing: Y is a loud speaker; V is the magnet of Y; Q ₁And Q ₂Be two moving (sound) independent of each other circles of Y, wherein: Q ₁For interior type moving-coil (is called for short inner ring, Q ₂Similar abbreviation), B is for reinforcing Q ₁And specially designed backplane level, Q ₂Be the outer ring; X is the hollow magnetic core, be respectively Q ₁And Q ₂Internal 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 ₁, Q ₂Magnetic pole is an outer magnetic pole; Q ₁Two group windings of coil M be respectively FF ' and GG '; Q ₂Two group windings of coil N be respectively HH ' and II '.

The contrast accompanying drawing is further introduced structure, function and innovation advantage: loud speaker Y is because of adopting the permanent magnetism ferromagnetic material, so its magnet V does very thinly, magnetic core X also makes hollow type, this has just alleviated weight and volume greatly; In addition, be interior and outer two groups of magnetic levels and because of magnetic core for hollow type, so can select for use interior or outer core layer and corresponding space thereof arbitrarily as laying moving-coil Q ₁And Q ₂And activity space, especially can regulate and control with tonequality because of putting the different volumes that are beneficial to that two voice coil loudspeaker voice coil second use permanent magnetics improve power outputs and two voice coil loudspeaker voice coils and the correspondence position on vibrating membrane thereof simultaneously during dual-purpose, in also can further utilizing, the inner space of external form moving-coil two windings of interior type moving-coil all are produced on the inwall of moving-coil and with the external form moving-coil interior, (design also has other advantage of series to winding of each cloth on the outer wall simultaneously like this, see below and state), this makes loud speaker miniaturization more with regard to having saved moving-coil and movable a lot of spaces that should account in addition thereof again; Moreover, but moving coil winding of the present invention is a coil change traditional single line list around single group series connection for double-wire spaced two groups and can be singly be absolute coil with the independent winding of multiple usage such as serial or parallel connection again and purposes, make every group of coil in, external diameter and weight with effectively (promptly produce and cutting magnetic line) line length and the exert oneself size and the uniformity and resistance (comprising D.C. resistance and AC impedance) etc. and volume with the increase power output and reduce that distortion promptly improves the closely-related serial important indicator of tonequality (see below and state) and data are all accomplished highly consistent simultaneously, and these significant drawback of traditional voice coil loudspeaker voice coil and too far behind to catch up just, (D.C. resistance reduces power output and generates heat because of direct power consumption as the D.C. resistance of its single coil and energy consumption thereof, even the thing of burning voice coil loudspeaker voice coil also happens occasionally, be not rare, comparatively speaking AC resistance be impedance generally do not consume energy do not generate heat yet) only be 1/2 of tradition series connection voice coil loudspeaker voice coil, be under receiver or hands-free state, all can only appoint one group of voice coil loudspeaker voice coil when only needing small volume to reduce volume and economize on electricity to prolong battery service time and life-span, voice coil loudspeaker voice coil D.C. resistance in parallel only be tradition 1/4 of the voice coil loudspeaker voice coil of connecting when the big volume of needs, these are because the number of turns of each of two absolute coils and D.C. resistance only are 1/2 of its series coil, be equivalent to strengthen one times of line footpath because of parallel connection again simultaneously, its D.C. resistance is reduced by half again, when needs utmost point amount of bass, also can connect, this shows its adaptability, applicability and bag (holding concurrently) capacitive is very wide very strong, advantage is more really also important, because the place of the major function of these most just audio communication instruments and use value; The 4th, not only make coil diameter increasing and direction also outside because of expanding, magnetic core is designed to the hollow magnetic core and moving-coil is designed to inner ring and corresponding internal layer winding thereof, inner ring particularly of the present invention because of coil attached on the speech coil framework inwall, can be difficult to rub by the protective effect of the voice coil loudspeaker voice coil outer wall of no winding with magnetic core, unless the degree that friction seriously all is worn through to outer wall, and the probability that this possibility promptly takes place is very little, but the backplane level B that also is an about 0.1-1mm Bao Kehou in addition in the voice coil loudspeaker voice coil bottom is to strengthen support force, add in directly firm splicing of voice coil loudspeaker voice coil top and vibrating membrane even the general, external form voice coil loudspeaker voice coil and vibrating membrane be being made of one and strong resistance to deformation directly, these also are the serial important distinct advantages that the present invention just may have, so can prevent effectively that the real core magnetic core of magnetic seam formula loud speaker that common traditional double-deck magnetic pole constitutes is because of moving-coil coil long-term motion and heating or the dilatancy and because of fastener such as the Luo silk nail or the binding agent of collision or fixing double-deck magnetic pole such as glue is loosening makes double-deck magnetic pole produce displacement of making moist, make the friction of coil and magnetic core and the little distortion of sound and when coil covering (because of the enamelled wire enamelled coating very thin and descended by thermal softening or sex change such as adhesive force in addition break wait very easy to be very fast) by the magnetic core worn-off after the powerful noise of generation] or dual-purpose space operation formula, distortion and displacement and adverse consequences thereof have not only effectively been prevented, weight and/or volume have also effectively been alleviated, and efficient (especially inside and outside dual-purpose formula can twice utilization and conversion permanent magnetic be sounding power) have utilized inner magnet field force and density of line of magnetic force far above the outside, magnetic flux density is also far above the magnetic signature of outside, even this only can produce more weak alternating magnetic field and magnetic force with regard to making moving-coil only pass to light current, (homo-polarity magnetic repels each other but it interacts at the powerful constant permanent magnetic with the permanent magnet generation, the coupling of heteropolarity magnetic force) time, also can produce same powerful suction to it because of powerful permanent magnetic, repulsion and enlarged markedly the active force of (being equal to amplification), thereby strengthened the movable energy of moving-coil, vibrating membrane that its promotion is bonded as one with it is that the energy of sounding body Z is also grown simultaneously, that is less alternating magnetic field (power) can be by means of stronger permanent magnetic, only needing to consume less sounding power is that portion of energy that cost just can be at an easy rate also converts the strength of part permanent magnetic to sounding required consumption promptly promotes the moving kinetic energy of voice coil loudspeaker voice coil and vibrating membrane fortune (shaking) and is converted into further therefrom that to promote kinetic energy that air fortune (shaking) moves be the acoustic energy of sounding, thereby available less input power also can obtain big volume, that is increased the power output of moving-coil, that is to say that less alternation magnetic force can be amplified by stronger permanent magnetic, so available less input power obtains bigger power output and can make further frivolous small-sized and high-qualityization of loud speaker of the present invention and power driving circuit and corresponding components and parts thereof, the electric energy and the caloric value that consume are also littler because of the increase of power output according to the law of conservation of energy principle, receive thereby significantly reduce, send out power and caloric value and battery and power consumption and environmental pollution and use cost, as because of only needing less sounding input power, just making only needs very little audio input signal just can reach the conversation purpose, be equivalent to improve machine sensitivity and speech quality as reducing correspondent tropism and broken string etc., this just can make emission and received power all can two-wayly reduce, mean that no matter to be the transmitting-receiving power of the promptly corresponding with it IVR receiving equipment of quantity and the transmitting power of cell site and transmitter thereof or receiving equipment can both two-wayly reduce; In the winding of centre circle and outer ring is made, outer each single layer coil, not only the same with the interior type moving-coil voice coil loudspeaker voice coil of reinforcing is to reduce the distortion of voice coil loudspeaker voice coil, also because of in, outer coil is in the voice coil loudspeaker voice coil, fastening and the adhesive force direction of outer wall is just in time cancelled each other mutually on the contrary, and in when voice coil loudspeaker voice coil energising work, being divided into because of coil, outer individual layer, every layer of heat production few (only for double-deck 1/2) and because of the rapid heat dissipation that is multiplied of heat radiation (internal layer adds skin) area, so good heat dissipation effect, in addition, because of the direction of its inner coil and outer ring expanded by heating is consistent is outside, the slit that the lucky available outer ring expansion in required space enlarges so inner ring expands provides, and when the voice coil loudspeaker voice coil outage quits work with heat production, in it, also unanimity is promptly all inside for the direction that the exterior loop cooling is shunk, so the space that the inner ring contraction is vacateed can be used for the outer ring just and shrinks needed inner space, these factors have all ensured in the voice coil loudspeaker voice coil, outside coefficient of thermal expansion and contraction is consistent with the degree height, in other words be exactly simultaneously and accomplished in high quality that comprehensively heating is few, rapid heat dissipation, modification not, this serial advantage also is that tradition is that export-oriented double-deck voice coil loudspeaker voice coil is not available, as the distortion of voice coil loudspeaker voice coil, even winding loose come off so that burn majority all mainly be because of the heating of double-layer overlapping winding fast, heat radiation is slow, voice coil loudspeaker voice coil and winding and each other due to coefficient of thermal expansion and contraction and the unbalance stress; The vibrating membrane Z of loud speaker Y and voice coil loudspeaker voice coil Q ₁, Q ₂Fixing (holder) frame P make with magnet with wide and parallel, and because of its with magnet with wide and parallel, be again that using with magnet is that the identical permanent magnetic material of hollow magnetic core is made and with the powerful permanent magnetic force of tool, so be also used as outer magnetic pole and invigoration effect in the permanent magnetic and the effect of moving-coil, and be that inner ring and/or outer ring especially the magnetic force strengthening effect of outer ring all extremely significantly and are further made the frivolous miniaturization of loud speaker, thereby make the overall volume of loud speaker and weight reduce to bottom line, these favorable factors all further reduce the volume of the mobile phone of the especially extensive production and marketing use of complete machine more effectively, weight, caloric value and energy resource consumption and environmental pollution and use cost are as the receipts of extending battery life and minimizing cell site's quantity and (transmitting power) scale and emission and receiving equipment, send out that power etc. causes to environmental pollutions such as the electromagnetic hazard of human body and refuse battery quantity, and reduce the battery power consumption and prolong the battery stand-by time that (frivolous miniaturization is a fundamental mark with improving the market competitiveness, and lower calorific value is frivolous small-sized basic prerequisite) etc. serial significant advantage.

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.

The present invention also has following serial main advantages: because the voice coil loudspeaker voice coil of loudspeaker of the present invention is independent double winding, can lead between each winding Cross partly or entirely alone, series, parallel or be used in combination and wide change impedance and power, therefore can double as receiver; And have Ultra-thin, ultralight, subminaturization (can do also little also light also thin more much than receiver earphone) and high sensitivity, high effect and high failing Go out serial great innovation and the advantages such as power and tonequality grace, distortion be little, these advantages for realize and satisfy the frivolous miniaturization of product, Especially the melodious grace of tonequality and consumer at any time need and like and freely select arbitrarily to converse and Music Appreciation mode etc. many Determine crucial serviceability and the consumption demand aspect of the market share that very big convenience and competitiveness are provided, as be beneficial to correct such as Popular so-called ear (plug) machine etc. alleviates radiation and to user's erroneous tendancies such as harm in the great mobile phone of consumption, because of Use earphone not only to bother inconvenience and be equivalent to and to have prolonged radiation real in having increased radiation and harmfulness because of the earphone line.

The present invention integrates above-mentioned serial main advantages, thus tool applications well and market prospects, as removing the above mobile phone that reaches etc. Require outside the frivolous small-sized low energy consumption lower calorific value application, such as with notebook computer, the sounding of mobile phone with the huge market of tool Application in frivolous small-sized high tone quality electronic applications such as electronic dictionary and products thereof is too wide.

Claims (7)

1, electroacoustic high-conversion rate high tone quality double-magnetic pole double-moving coil type loud speaker is made up of vibrating membrane, vibrating membrane fixed support, ferromagnetism alloy permanent magnet, hollow magnetic core and two voice coil loudspeaker voice coils.

2, the described electroacoustic high-conversion rate of claim 1 high tone quality double-magnetic pole double-moving coil type loud speaker is characterized in that vibrating membrane fixed support double as outer magnetic pole.

3, the described electroacoustic high-conversion rate of claim 1 high tone quality double-magnetic pole double-moving coil type loud speaker is characterized in that the hollow magnetic core is inside and outside and place a double winding moving-coil with each.

4, the described electroacoustic high-conversion rate of claim 1 high tone quality double-magnetic pole double-moving coil type loud speaker is characterized in that the double winding moving-coil is double-wire spaced, separate.

5, the described electroacoustic high-conversion rate of claim 1 high tone quality double-magnetic pole double-moving coil type loud speaker is characterized in that the double winding moving-coil is divided into interior and outer two.

6, the described double winding moving-coil of claim 5, 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 inside and outside wall of moving-coil.

7, the described interior type double winding moving-coil of claim 6 is characterized in that backplane level is arranged.