CN107580282A - Swing type loudspeaker - Google Patents

Abstract

It is proposed that the New-type loudspeaker of a kind of entitled swing type loudspeaker, wherein a kind of simplest phonation unit main body is as shown in drawings：A part for attached irony planar rectangular spiral winding on the plastic film, is folded into behind three faces to be put between two bar magnets and is used as vibrating diaphragm.The spacing of very little between fold line 2 and 3 and neighbouring magnetic pole strength be present, when there is tone currents, the plane between fold line 1 and 2 and between fold line 3 and 4 is made Fan dynamic formulas and vibrated, and the plane between fold line 2 and 3 makees swing type vibration.If do rods arranged in horizontal line with two groups of magnet, so that the length of magnetic field space and vibrating diaphragm is all longer, Fan between fold line 1 and 2 and 3 and 4 moves face and just made with some the parallel irony straight wires of adhesion on the plastic film, plane of oscillation between fold line 2 and 3 is just made with banding iron foil, and the loudspeaker in this face that shaken based on iron foil can be used for the sound system of television set.

Description

Swing type loudspeaker

Technical field

Loudspeaker is a final element of the audio visual technology of information science field subordinate, and final element includes being seen for eyes and being listened for ear two Major class, the former is mainly display screen, has reached very high level, and the latter is mainly loudspeaker, for a long time without much changes, is almost located In the state of stagnation.

Background technology

Moving-coil type (also known as electrodynamic type) loudspeaker used now is to invent for 1861, so far existing very long history.Once occurred tongue therebetween Reed horn, piezoelectric speaker, Horn loudspeaker, electrostatic loudspeaker etc., they were never widely adopted.Though coil-moving speaker has some excellent Point, but its distortion factor still be up to 5%, caused by this is its structural defect, to reduce again a little it is all highly difficult, people are to such distortion Degree let matters drift, have no way out, it is that high-fidelity is asked and must not, someone then go pursue music sense with instead of.The arrival of information age forces Analog circuit is withdrawn from the arena, and digital circuit is gone up on the stage, and the latter can accomplish undistorted record, transmits and amplify audio electrical signal, and coil-moving speaker is early It has been not suitable with require that for this development trend.

On the other hand, with the development of microelectric technique, occur a collection of special producer for making flexible print circuit in China, their equipment and Production technology can just be used for developing and making the vibrating diaphragm of New-type loudspeaker, i.e., " flexible vibrating membrane speaker " voice coil loudspeaker voice coil and vibrating diaphragm being integrated Vibrating diaphragm；And the neodymium iron boron magnetic body that magnetic force required for making this New-type loudspeaker is extremely strong, either production quantity or product quality or even sexual valence Than China is all early at level advanced in the world.It is this new to raise one's voice along with large market demand by this two big industry as pillar Device inherently takes root in China, yields positive results.

The content of the invention

The flexible vibrating membrane speaker that voice coil loudspeaker voice coil and vibrating diaphragm are integrated, exactly the wire bundle or metal foil of conduction tone currents are pasted onto with plastic sheeting Together, and the loudspeaker in magnetic field as vibrating diaphragm is placed it in, because vibrating diaphragm is completely in magnetic field, the distribution of electromagnetic force of tone currents is whole On vibrating diaphragm, the motion of any point is all dominated by the electromagnetic force of tone currents on vibrating diaphragm, thus distortion very little.This kind of loudspeaker has a variety of production programs, The shape of vibrating diaphragm and Yang Shengqi shape are also diversified, in addition to string-vibrating type and Fan loudspeakers, reintroduce one here Series, and it is referred to as swing type loudspeaker.

One phonation unit of swing type loudspeaker is made up of two rectangular magnet bodies and a vibrating diaphragm being placed in therebetween.Cuboid magnet end face is just Square, magnetic pole strength is rectangle.Magnet is arranged in parallel by the orientation to attract each other, and the place by end between two magnet is provided with supporter, to overhang The space of one placement vibrating diaphragm.The vibrating diaphragm of swing type loudspeaker is diversified, and a kind of simplest vibrating diaphragm is being attached to a piece of shown in Fig. 1-1 Two irony planar rectangular spiral windings on plastic foil, are placed it into after folding in the magnetic field between two blocks of magnet, and by its both sides stick at this two On block magnet side.When making vibrating diaphragm by hand, two are attached to the irony planar rectangular spiral winding on a piece of plastic foil, are in a pad Have on the upward adhesive tape film of graph paper, glue-line, enclosed along coordinate line and pasted with flat copper steel clad wire one, then apply last layer and glue what footwear glue was made. In batch production, it should with iron foil and the composite membrane of plastic foil, according to the method for making flexible print circuit, entrust this kind of flexible print circuit to give birth to Producer is produced to print by figure.

In (1-1) is schemed, two coils divide into five regions by four fold lines, and fold line 1 encloses through first coil most the inside one, folding Superimposing thread 1 is to the call wire area that the region of this coil top edge is this coil, likewise, fold line 4 encloses through second coil most the inside one, folding Superimposing thread 4 is also the call wire area of this coil to the region of the lower edge of this coil, and the region between fold line 1 and 4 be drives line area, it and quilt Fold line 2 and 3 is further divided into three regions, and the region between fold line 2 and 3 is referred to as plane of oscillation, and its width is slightly smaller than between two magnetic pole strengths Away from the region between fold line 1 and 2 and between fold line 3 and 4 is respectively that two width identical Fan move face, and its width is slightly larger than two magnetic poles Interplanar distance.The difference of fold line 2 and 3 being first according to during making in figure is reverse folded so that one end of the vibrating diaphragm edge face fold line after folding is seen Get up as a N font, one layer of cardboard with side with size, and the gluing on cardboard are then glued on the left surface of lower magnet, N fonts are shaken Fold line 1 is set to be overlapped with the upper seamed edge of this magnet on the left surface that film fold line sticks at lower magnet below 1 to the inside region of coil edge, when viscous, With same method, N font vibrating diaphragms fold line 4 is sticked on the right flank of upper magnet with the inside region of up to coil edge, fold line is made when viscous 4 overlap with the lower seamed edge of this magnet, and outside to coil edge area (i.e. call wire area) area of fold line 1 and 4 is more than the area of magnet side, By redundance refolding and the insulating paper pressing of double spread must be sandwiched, that is, overlappingly sticked on magnet side.Figure (1-2) glues for vibrating diaphragm The later sectional view perpendicular to magnet seamed edge direction, in figure, the plane between the upper drift angle of N fonts and lower drift angle is referred to as plane of oscillation, upper drift angle Be that Fan moves face with the plane on the outside of lower drift angle, the top of the horn of upper drift angle and lower drift angle can not contact with magnetic pole surfaces, i.e., fold line 2 and 3 with it is close A small distance is left between magnetic pole strength.

Scheme the oblique view that (1-3) is swing type speaker body structure.We have seen that：The vibrating diaphragm of simplest swing type loudspeaker includes three The individual plane of oscillation, middle one is plane of oscillation, and plane of oscillation is a rectangle plane, and both sides respectively have a Fan to move face, and it is also rectangle that each Fan, which moves face, Plane, fold line 1 and 4 are the Fan moving axis that two Fan move face, and fold line 2 and 3 is both the swing side of plane of oscillation, are the Fan that two Fan move face again Dynamic side, because these three faces had both been acted on by magnetic force, and by the effect of tension force (i.e. pulling force), so as to form a balanced system of force, at this In the presence of power system, the inactive state of the self-assembling formation oneself in magnetic field is automatically found the equilbrium position of oneself by them.

When there is tone currents, two Fan, which move face, to make Fan dynamic formulas around the Fan moving axis (i.e. fold line 1 and 4) oneself overlapped with magnet long side respectively Vibration, plane of oscillation will be around the equilbrium position alternating of oneself to the left and move right, i.e., vibrated by plane parallel motion mode, but say that it puts down The vibration of face parallel motion mode is not very accurate, and its motion also includes the very small periodicity around plane of oscillation center line and carrys out back rotation, Therefore, swung not as visually it is said to be.During with connecting wire toward power amplifier, it is necessary to the drives line allowed in two coils, i.e. fold line 1 and 4 Between wire, any time tone currents has identical flow direction, so can be in parallel with anode by coil anode, joins after negative terminal is in parallel with negative terminal toward work( Put, or, join after being connected by positive and negative order toward power amplifier.

The length of vibrating diaphragm is more slightly shorter than two supporter inner surface spacing of two magnet ends.By scheming (1-3) it is envisioned that being put with two blocks of foamed plastics Supporter (being not drawn into figure) between inner surface and vibrating diaphragm end in magnet both ends, it is possible to separate the air of vibrating diaphragm both sides, thus this loudspeaker It is easy to eliminate acoustic short circuit, this is an advantage of swing type loudspeaker.It can also be seen that this vibrating diaphragm can make large-amplitude vibration by scheming (1-3), Thus rated power can be made larger, and this is another advantage of swing type loudspeaker.Figure (1-2) and figure (1-3) only depict a hair Sound unit, multiple phonation units arranged side by side are such as used, are well suited for as auto loud hailer, its range is wide, and distortion is small, has again shatter-proof well Property, as long as coordinating with common subwoofer, preferable car audio system just can be formed.

Brief description of the drawings

Fig. 1-1 is to be attached to two irony planar rectangular spiral windings on a piece of plastic foil.

Fig. 1-2 is sectional view of the phonation unit perpendicular to magnet seamed edge of N font vibrating diaphragms.

Fig. 1-3 is the oblique view of the phonation unit agent structure of N font vibrating diaphragms.

Fig. 2-1 is sectional view of the phonation unit perpendicular to magnet seamed edge of the overlapping N font vibrating diaphragms of plane of oscillation.

Fig. 2-2 is sectional view of the phonation unit with the dynamic faces of two Fan and a pendular body perpendicular to magnet seamed edge.

Fig. 2-3 is sectional view of the phonation unit perpendicular to magnet seamed edge of the vibrating diaphragm of hanging basket shape.

Fig. 2-4 is sectional view of the phonation unit perpendicular to magnet seamed edge of N fonts and its two-in-one vibrating diaphragm of mirror image.

Fig. 2-5 is sectional view of the phonation unit perpendicular to magnet seamed edge of W fonts and its two-in-one vibrating diaphragm of mirror image.

Fig. 3-1 show with copper covered steel wire be Fan move face and iron foil do plane of oscillation long size vibrating diaphragm be folded to before figure.

Fig. 3-2 shows sectional view of the swing type loudspeaker with two long size phonation unit perpendicular to magnet seamed edge.

Fig. 3-3 shows a kind of long size vibrating diaphragm printed with the preparation method of flexible print circuit on the laminating film of iron foil and plastic foil.

Fig. 3-4 shows another long size vibrating diaphragm printed with the preparation method of flexible print circuit on the laminating film of iron foil and plastic foil.

Fig. 3-5 is shown the overlapping stickup in figure iron foil region, with regard to that can make vibrating diaphragm of the plane of oscillation with 2 layers or 4 layers iron foil.

Fig. 3-6 shows sectional view of the slim swing type loudspeaker perpendicular to magnet seamed edge of two phonation units.

Fig. 3-7 shows sectional view of the slim swing type loudspeaker perpendicular to magnet seamed edge of six phonation units.

Embodiment

The magnet for making swing type loudspeaker typically chooses the cuboid ndfeb magnet that end face is square and magnetic pole strength is rectangle.Swing type loudspeaker Vibrating diaphragm have two kinds, a kind of is the vibrating diaphragm made of the irony planar rectangular spiral winding depending on the plastic film, it be suitable for magnet by two-by-two mutually inhale The direction of conjunction is made spaced, and the vibrating diaphragm of a corresponding size, i.e., the situation of short size phonation unit are inserted between the antithesis magnetic pole strength of every two bar magnet. Another kind is the vibrating diaphragm that plane of oscillation is made of iron foil, and it is suitable for two groups of magnet and makees rods arranged in horizontal line by end face linking, so as to make two longer antithesis Magnetic pole strength, vibrating diaphragm of the banding iron foil as plane of oscillation, i.e., the situation of long size phonation unit are inserted therebetween.Below, we shake to this two class Film is introduced respectively.

(1) the short size phonation unit made of attached irony planar rectangular spiral winding on the plastic film

These vibrating diaphragms being described below are made of attached irony planar rectangular spiral winding on the plastic film.By following five, swing type The vibrating diaphragm of loudspeaker can make many shapes.

1. the overlapping N font vibrating diaphragms of plane of oscillation

As shown in Fig. 2-1：Vibrating diaphragm is done with two irony planar rectangular spiral windings, and is bonded plane of oscillation region is overlapping.Swing type loudspeaker In vibration processes, plane of oscillation should undertake most motive force of vibrating diaphragm, it should whole vibration of membrane of shaking is played a leading role, and Fan moves face Synergy is only played, only in this way, just will not mutually engage in idle talk, be not in just distortion caused by three face steps differ.Plane of oscillation Make two layers, the drives line number on plane of oscillation is added one times, its driving force also increases one times.

2. the N font vibrating diaphragms of a pendular body are synthesized by two planes of oscillation

As shown in Fig. 2-2：Vibrating diaphragm is made using two irony planar rectangular spiral windings, and the soft bending of the drive line areas on each coil is divided Go out Fan and move face and plane of oscillation region, and each plane of oscillation edge is bonded at pairing plane of oscillation and Fan and moves being connected on location of face so that two swing The region in face, which is combined, surrounds a hollow cylinder, and synthetic cotton is filled in cylinder, it is desirable to reduces vibrating diaphragm resonant frequency whereby.

3. the vibrating diaphragm of hanging basket shape

As Figure 2-3：Hanging basket bottom section is the overlay region of two irony planar rectangular spiral windings, and this is plane of oscillation region, should be pressed from both sides during stickup Enter the film of appropriate hardness, vibrating diaphragm is made into shape of the Section line such as hanging basket.Two tapes are added on vibrating diaphragm to close air-gap, every The a line of tape is bonded at plane of oscillation and Fan and moves being connected on location of face, and another a line is dragged on lower magnetic pole face.

4. the two-in-one vibrating diaphragm of the N fonts of two mirror-symmetricals

As in Figure 2-4：Vibrating diaphragm is made using four irony planar rectangular spiral windings, and each plane of oscillation is two swings provided by two coils The overlapping bonding in face, hitting exactly two Fan on symmetry axis, dynamic face is also overlapping is bonded together.

5. the two-in-one vibrating diaphragm of the W fonts of two mirror-symmetricals

As shown in Figure 2-5：Vibrating diaphragm is made using four irony planar rectangular spiral windings, and wherein top half and the latter half are all that use is attached to together What two coils on piece of plastic film were made, the soft Fan that marks off deviously of the drive line areas on each coil is moved into face and plane of oscillation area Domain, and by the bottom of W fonts with being bonded together at the top of the W fonts that have overturned so that the region of two planes of oscillation (can also can be regarded as four Individual plane of oscillation) it is combined and surrounds a hollow cylinder, and synthetic cotton is filled in cylinder.

For above-mentioned example, distinguished if moving face linking location according to plane of oscillation and Fan and whetheing there is fold line：So Fig. 2-1 has, Fig. 2-2 nothings, Fig. 2-3 Nothing, Fig. 2-4 have, Fig. 2-5 nothings.If the number that face is moved according to plane of oscillation (or pendular body) and Fan is distinguished：So Fig. 2-1 has a plane of oscillation Face is moved with two Fan, Fig. 2-2 has two planes of oscillation (pendular body) and two Fan move face, and Fig. 2-3 has a plane of oscillation and two Fan to move face, Fig. 2-4 has two planes of oscillation and three Fan move face, and Fig. 2-5 has four planes of oscillation (pendular body) and four Fan to move face.It is known that Fan is moved The Fan moving axis of formula loudspeaker all on the center line of magnetic pole strength, but from above-mentioned example can be seen that swing type loudspeaker Fan move face on Fan moving axis one As not on the center line of magnetic pole strength, on the contrary, typically on the seamed edge of rectangular magnet body.

The vibrating diaphragm of swing type loudspeaker is varied, and each vibrating diaphragm is by 2 to 4 attached irony planar rectangular spiral windings on the plastic film Make.Summary example, their way can be summarized as follows：The first step, for each attached irony planar rectangular helix on the plastic film Circle, Liang Ge areas are divided into according to the fold line through a turn coil in most, an area is used as call wire area, and another area conducts as drives line area No matter line area is the region that be finally bonded on magnet side, can be lain over second steps, and drives line area will also be further partitioned into Liang Ge areas, one Area is that Fan moves face, and another area is plane of oscillation, and Fan moves face between call wire area and plane of oscillation, and Fan moves the division of face and plane of oscillation, typically by two Individual section is separated with a fold line parallel to drives line, and Bing Jiangliang areas fold out an angle, can also be not folded, and plane of oscillation is made into song Face, the larger curved surface of curvature is particularly made into the part that neighbouring Fan moves face on plane of oscillation.3rd step, it is exactly multiple swings that multiple coils are contributed Face or two-by-two overlapping edges are simultaneously bonded to each other, or overlapping and bonded to each other two-by-two, or the edge of a plane of oscillation is bonded at the Fan of another coil and moves face and pendulum Near the interface in dynamic face.4th step, it is that the drive line areas that will be glued puts magnetic field into, call wire region is bonded at magnetic (after typically wanting refolding) Final steps on iron side, to each coil connecting line, line must be attached according to the requirement of impedance, and be ensured when vibrating diaphragm and audio power supply connect When logical, the sense of current is identical in any time all drives lines.

By all these work for folding, bending, bonding, a stabilization being made up of the dynamic faces of some Fan and plane of oscillation is finally constructed in magnetic field Constant position shape.Under this shape, the magnetic force and tension force that are subject on each face are in the state mutually balanced, are also exactly to be automatically achieved most in this power system Eventually during balance, that finally brings up and naturally form vibrating diaphragm stablizes constant position shape.Under this shape, all drives lines remain straight line, All drives lines are mutually parallel and parallel to the seamed edge of magnet.Under this shape, when vibrating diaphragm connects with audio power supply, vibrating diaphragm can be both vertical Swung again perpendicular to the side of drives line upward around equilbrium position in the magnetic line of force.

Plane of oscillation on the vibrating diaphragm of all swing type loudspeakers can make of iron foil in principle, but if vibrating diaphragm length is shorter, insert wherein Iron foil as plane of oscillation, do it is very inconvenient, really by the use of iron foil as if plane of oscillation, it is necessary to have more phonation unit, and all Plane of oscillation is cascaded, and Fan moves face and still made of attached irony planar rectangular spiral winding on the plastic film.If vibrating diaphragm length is longer, iron foil is used As plane of oscillation, effect is strictly good, and the situation by the use of iron foil as the plane of oscillation of long vibrating diaphragm is described below.

(2) the long size phonation unit of plane of oscillation is used as by the use of banding iron foil

By experiment it was found that the vibrating diaphragm that copper covered steel wire or iron wire are done, either makes capability, or electro-acoustic conversion efficiency by oneself, all compare non iron The vibrating diaphragm that wire is done is much better.Well imagine, if vibrating diaphragm can be done with iron foil, its magnetic resistance is smaller, and it is stronger to assemble the ability of the magnetic line of force, because And it makes capability by oneself, electro-acoustic conversion efficiency promotes power all will be more preferable, and vibrating diaphragm can also be suitably widened, for placing vibrating diaphragm Antithesis magnetic pole interplanar distance is suitably widened.By experiment it was found that adding iron foil in a vibrating diaphragm, as a part of vibrating diaphragm, strictly may be used With realization, compared to other vibrating diaphragms, the loudspeaker of this vibrating diaphragm has its superior part really.

Some large-screen color TVs, its loudspeaker are often separated, are separately placed in television desktop, this sounding independently of outside display screen System typically makes very long rectangular shape, but its internal installation is still some conventional loudspeakers.With the long size sounding list of two or more The swing type loudspeaker of member, just can are made very long rectangular shape, are just well suited for for substituting this sonification system.As a result of iron Paper tinsel is as the plane of oscillation on vibrating diaphragm, the electro-acoustic conversion efficiency of this loudspeaker, and rated power etc., it will is gratifying.As feasible Property experiment, this loudspeaker is done and is not difficult, is also described below by hand, only for reference.

The first step is to prepare two vibrating diaphragms as shown in figure (3-1), and the way of each vibrating diaphragm is as follows：It is 51 centimeters long with one, 7.5 centimeters wide Polyester film, corner are cemented on a graph paper, and one 50 centimeters long, 1.5 centimeters wide, 30 microns thick iron foil (hands are stained with film center Head only has this thickness), the call wire at iron foil both ends is welded before viscous, glues thin plastic of the lastblock with size again on iron foil surface after gluing, To insulate.The region of this iron foil covering is exactly the region between fold line 2 and 3, and iron foil is exactly plane of oscillation, and its resistance is slightly smaller than 1 ohm. According to figure (3-1), in the region between fold line 1 and 2,16 copper covered steel lenticular wires are equably stained with parallel to iron foil as drives line, line Resistance is 5 Europe/rice.Every drives line both ends have one section it is vertical with it and extend to the call wire for leaving film, these lines are just made One Fan moves face, and its width is slightly smaller than 2 centimeters.Then, one piece plastics film is turned over into a face, is symmetrically stained with 16 lines in iron foil opposite side, The region that these lines occupy is located between fold line 3 and 4, and this is that second Fan moves face.Every 8 adjacent lines are finally divided into one group, and will Merge with group the end of a thread and weld together.

Second step is to do the iron frame of a fixed magnet and install magnet：With 2 centimeters of thick planks, two pieces of 6.4 centimeters of vertical sizes, water are sawed out The wooden unit of leveling ruler cun 5 centimeters, an and blockage region of 1.2 × 1.2 × 2 centimeters of wooden unit corner is amputated, look for four 1.2 × 1.2 × 60 it is public Point very hard rod iron, two terminations of every rod iron are sticked on the blockage position that wooden unit is amputated, thus made it is one long 60 centimeters, High 6.5 centimeters, wide 5 centimeters, four seamed edges are the framework of the rectangular shape of rod iron.Then by 1 × 1 × 5 centimeters of neodymium iron boron bar magnet point For four groups, every group includes 10 bar magnets, successively by they adsorb on the lower surface of upper rod iron and the upper surface of lower rod iron, every group of magnet end away from 5 centimeters of rod iron end, the exposed magnetic pole strength polarity of 10 bar magnets on same rod iron is identical, and two in the naked of the magnet on diagonal rod iron It is identical to reveal magnetic pole strength polarity, the exposed magnetic pole strength opposite polarity of the magnet on upper and lower two rod irons, upper and lower magnetic pole interplanar distance is 2 centimeters.

3rd step is installation vibrating diaphragm：Above and below the framework side of rectangular shape in two groups of magnet, in one group of inner side and another group of outside with gluing One 1 × 50 centimeter of cardboard, the vibrating diaphragm to be glued that then will be schemed shown in (3-1) are reverse folded along fold line 2 and 3 so that vertical after folding In on the sectional plane of long side, the intersection of three faces and sectional plane is in N fonts, and the copper covered steel wire for making latter two Fan of folding move on face is all located at plastic foil On outer surface.Again by fold line 1 to plastic foil top edge and fold line 4 to plastic foil lower edge, about 1 centimeter of wide white space and paper Gluing is distinguished on plate, is then bonded, allows fold line 1 and 4 to be coincide respectively with upper cardboard lower edge and lower cardboard top edge during bonding.With same Method by second vibrating diaphragm be arranged on framework opposite side on.

4th step is soldered wires, is built into a sound absorption bag in framework, and cover top plate and bottom plate：The present apparatus includes two phonation units, by one The a+ that bar power amplifier output line is connected to one of vibrating diaphragm is welded, then is welded one by a- and linked to b+, likewise, b- to c+, c- are to d+, d- It is also identical with first to e+, the a+ of e- to second vibrating diaphragm, the connection of this vibrating diaphragm, the e- of this vibrating diaphragm is finally connected to the output of power amplifier Article 2 Line, this connection make each vibrating diaphragm be independently sounding.One power amplifier output line can also be connected to first by two vibrating diaphragm interconnections The a+ of individual vibrating diaphragm is welded, then welds an a+ for linking to the second vibrating diaphragm by a-, likewise, the a- of the second vibrating diaphragm is connected to the b+ of the first vibrating diaphragm, The b- of first vibrating diaphragm is connected to the b+ of the second vibrating diaphragm, and so on, interconnection repeatedly, the e- of the second vibrating diaphragm is finally connected to the output of power amplifier Article 2 Line, this connection make each vibrating diaphragm no longer be independently sounding.Connected mode has a variety of, but two vibrating diaphragm lines connect in any case, and first will make The sense of current of any time in all drives lines and iron foil it is all identical, this is that above two connection has all been accomplished；Second will cause two Individual vibrating diaphragm any time all outwards launches same position phase sound wave, to accomplish this point, preferably more reliable from two vibrating diaphragm interconnections.At two Foamed plastics is put between phonation unit, or makes the long bag shaped like pillow with gauze and synthetic cotton and is put into, for absorbing the anti-phase sound in speaker chambers Ripple, and it is finally each in the top and bottom of iron frame that foam-plastic blocks filling is put into the space between the plank at iron frame both ends and vibrating diaphragm end Adsorb the iron plate of 1.2 × 5 × 60 centimeters of lastblock.Figure (3-2) is sectional view of the loudspeaker perpendicular to long side direction of this rectangular shape.

When carrying out large-scale production, the vibrating diaphragm of this loudspeaker should after overtesting, with the laminating film of relatively thin iron foil and plastic foil, or With the laminating film of relatively thin copper facing iron foil and plastic foil, or the laminating film that can be printed with two sides, printed by the producer of making flexible print circuit. It is two kinds of slightly different printing schemes to scheme (3-3) and figure (3-4), it can be seen that fold line 2 and fold line 3 enclose region (b+ to b-) The plane of oscillation region belonged to where iron foil, what two figures were just as, this part need not printing.And fold line 1 and fold line 2 enclose region (a+ To a-) and fold line 3 and fold line 4 enclose region (c+ to c-) and belong to the region that Fan moves face, it is different that the Fan that two figures are shown moves face, meaning That is the dynamic faces of Fan design and produce very big arbitrariness, can both make grid, can make various grid-shapeds again.Fig. 3-5 is shown Obtained belt can also be printed like this with two, by iron foil region add it is overlapping after viscous insulating cell be pasted together, it is complete so as to make one Whole vibrating diaphragm, the plane of oscillation of this vibrating diaphragm just have two layers or four layers of iron foil.

The vibrating diaphragm made of the method for printing flexible print circuit, must equally be followed in design and line：(1) loudspeaker impedance hinders with power amplifier output It is anti-to match.(2) electric current that any time all Fan are moved in face and all planes of oscillation has identical flow direction, moreover, the electric current that all Fan move face is big Small identical, the size of current of all planes of oscillation is identical.(3) the promotion power of each phonation unit plane of oscillation is approximately equal to or greater than two Fan and moves face Promote the summation of power.For example, in figure (3-3) and figure (3-4), two Fan can be moved to face parallel connection and be cascaded again with plane of oscillation later, To ensure that vibration sounding is dominated by plane of oscillation.

The shortcomings that loudspeaker that presented hereinbefore is made by hand is that weight is too big, in order to mitigate weight, can use the less magnet of size, example instead 0.5 × 0.5 × 3 centimeters of magnet can be such as used, and accordingly increases vibrating diaphragm number, to make up loss caused by vibrating diaphragm narrows, it is less to use size instead After magnet, also just and then use thinner instead for the rod iron of magnet fixation, cover plate and bottom plate are also just and then used instead relatively thin.Iron foil thickness Should select it is as thin as possible, in favor of mitigate vibrating diaphragm weight.

Swing type loudspeaker can also make only phonation unit, either make all phonation units at grade or two hairs Sound unit is in two mutually perpendicular planes, to adapt to the needs of hanging-type TV.The less swing type of lateral dimension can also be made to raise one's voice Device, such as scheme shown in (3-6) and figure (3-7)；Figure (3-6) is the thin speaker of two two-sided sounding of phonation unit, and the angle bar in figure also may be used Change arc ironware into, it is applied to the desktop television set of stock size；Figure (3-7) is the thin speaker of 6 two-sided sounding of phonation unit, is used Several such loudspeakers are side-by-side, length is spelled length at double, so that it may for large-sized television set.This iron foil is raised one's voice as plane of oscillation Device can also be as a center loudspeaker, and mixes the high Squawker that irony planar rectangular spiral winding makes again at its both ends, just makes The articulatory system of two-channel, or be vertically installed at television set both sides as the loudspeaker of plane of oscillation by the use of two iron foils, just made the hair of two-channel System for electrical teaching.

Claims (8)

1. the application proposes a kind of New-type loudspeaker, and it is referred to as《Swing type loudspeaker》, its phonation unit can distinguish by size length, Short phonation unit includes the rectangular magnet body that two magnetic pole strengths are rectangle, and the vibrating diaphragm for a corresponding size being placed between its antithesis magnetic pole strength, with 2 To the irony planar rectangular spiral winding of 4 attachments on the plastic film, the part that they are put into magnetic field forms the dynamic faces of several Fan being mutually linked and swing Face, it is totally vibrating diaphragm；Long phonation unit includes the rectangular magnet body that two groups of magnetic pole strengths are rectangle, and two groups of magnet make rods arranged in horizontal line, structure respectively Into the antithesis magnetic pole strength of two long sizes, the vibrating diaphragm of a corresponding size is inserted therebetween, vibrating diaphragm moves face by two Fan and a plane of oscillation forms, and swings Made with iron foil in face.

2. loudspeaker as claimed in claim 1, it is characterised in that in short phonation unit, put down on irony planar rectangular spiral winding with long side Coil has been divided into two halves, half is adhered on magnet, and conduction is only played in this part by a capable fold line through two short sides of a most interior circle The effect of tone currents；When pasting fixed, this fold line adheres to the seamed edge of magnet with it or magnetic pole strength center line overlaps；Second half of coil is placed into Magnetic field, this part are divided into a Fan and move face and a plane of oscillation again, and a line that Fan moves face is exactly this fold line, and a line of plane of oscillation is just It is the edge of this half-coil.

3. loudspeaker as claimed in claim 1, it is characterised in that in short phonation unit, all irony planar rectangular spiral winding contributions All planes of oscillation overlap each other two-by-two, or the docking of two two edges, or the marginal adhesion of a plane of oscillation moves the joining place in face in another plane of oscillation and Fan.

4. loudspeaker as claimed in claim 1, it is characterised in that the Fan of long phonation unit moves face, can be with having adhered to some and iron foil edge The plastic foil of parallel irony wire is made, and the method that can also use flexible print circuit, on the composite membrane of iron foil and plastic foil, is moved belonging to Fan Gridline is printed out in the region in face or grid lines is made.

5. loudspeaker as claimed in claim 1, it is characterised in that the linking that Fan moves face and plane of oscillation can be a fold line or The larger curved surface of curvature.

6. loudspeaker as claimed in claim 1, it is characterised in that it is rectangle plane that Fan, which moves face, and plane of oscillation can be plane or appoint Meaning curved surface, swings the seamed edge that any straight line on curved surface is parallel to magnet, and several planes of oscillation can also surround a cylinder.

7. loudspeaker as claimed in claim 1, it is characterised in that in the presence of having tone currents, parallel to magnet rib in any time vibrating diaphragm All the irony wires or the sense of current of grid lines and iron foil on side are all identical.

8. loudspeaker as claimed in claim 1, it is characterised in that in the presence of having tone currents, it is solid around oneself one that all Fan move face Dead axle makees the vibration of Fan dynamic formulas, and all planes of oscillation make the swing type vibration for being similar to plane parallel motion.