CN2899360Y - Oscillating diaphragm for receiver - Google Patents
Oscillating diaphragm for receiver Download PDFInfo
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- CN2899360Y CN2899360Y CN 200520118855 CN200520118855U CN2899360Y CN 2899360 Y CN2899360 Y CN 2899360Y CN 200520118855 CN200520118855 CN 200520118855 CN 200520118855 U CN200520118855 U CN 200520118855U CN 2899360 Y CN2899360 Y CN 2899360Y
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- vibrating membrane
- blade
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Abstract
A lamina (142) of oscillating film (118) for receiver (100) adopts one or more layers according to the mass inertia, and rigidity. The lamina is of cascade structure, and comprises a rigid outer layer, such as an aluminum layer, and an inner layer with a lower density, such as a layer of thermoplastic adhesive. Through the choosing of the outer and inner layers, a mass inertia matched to the mass inertia of the armature (124) of the receiver (100), and a bending sympathetic vibration of a lower frequency which is higher than the expected range, such as 14 KHz, are to be given.
Description
Technical field
The present invention relates to listen to the receiver that uses in the device (such as the device of hearing aids and so on), and more specifically, relating to can be with the vibration membrane module that uses in the vibration balancing receiver assembly of property retention in scheduled frequency range.
Background technology
The hearing aid technology has obtained developing rapidly in recent years.Technological progress in this field constantly improved hearing aids receiving ability, wear comfortableness, useful life and power efficiency.Along with these of ear-wearing type hearing device aspect of performance are constantly progressive, to the requirement of the proper property that improves employed miniature acoustic transducers in continuous increase.In the hearing aids industry, that is widely known by the people has several different hearing aids types: type (ITC) and the interior type (CTC) of duct fully in type (ITE), the duct in type or the full ear in type behind the ear (BTE), the ear.
In general, the device (listening device) of listening to such as hearing aids comprises microphone part, amplifier section and receiver (transducer) part.Microphone is partly collected vibrational energy (that is, the sound wave in the sonic frequency), and produces the signal of telecommunication of representing these sound waves.Amplifier section obtains this signal of telecommunication, this signal is amplified and will send to the receiver part through the signal that amplifies (for example, through handling).The receiver part will convert acoustic energy to through amplifying signal then, so this acoustic energy of user's uppick.
According to traditional way, receiver partly utilizes moving-member (for example armature, vibrating membrane etc.) to produce acoustic energy in the individual's of the device that uses hearing aids and so on duct.If the receiver part contacts with another hearing aids part, then the momentum of these moving-members will partly pass to this part from receiver, and turns back to the microphone part from this part.So momentum that this is transmitted or energy may cause the parasitic electricity output from microphone, that is, and feedback (feedback).This structural limitations that can produce unwanted feedback can put on the amplification quantity of the signal of telecommunication of the received sound wave of representative.Under many circumstances, this restriction impairs the performance of hearing aids.Therefore, expectation reduces to occur in vibration and/or the magnetic feedback in the receiver part of device of hearing aids and so on.
No. the 09/755664th, the U.S. Patent application that the name of submitting to January 5 calendar year 2001 is called " vibration balancing receiver (Vibration BalancedReceiver) " (is the application that continues of part that the name submitted on January 7th, 2000 is called No. the 09/479134th, the U.S. Patent application of " vibration balancing receiver (Vibration Balanced Receiver) ", abandoned now, all incorporate their disclosure into this paper clearly by reference and be used for all purposes) instructed a kind of vibration balancing receiver assembly, this assembly is designed to the equilibrium establishment motion (promptly, armature and vibrating membrane momentum equate and opposite in the assembly), and thereby eliminated the active force of receiver partial interior.
Typically, receiver assembly comprises: armature, and this armature drives reciprocating motion; One or more vibrating membranes, the reciprocating motion of each vibrating membrane is subjected to displacement air, exports with generation sound; And one or more linkage units, these linkage units are connected to the motion of armature on described this vibrating membrane or this a plurality of vibrating membranes.Vibrating membrane can comprise structural member (such as blade), for vibrating membrane provides most quality and rigidity.Except with being connected of linkage component, blade also is connected on the receiver assembly by a kind of structure, this structure makes that blade can reciprocating motion, so that air is subjected to displacement, thereby produces acoustic energy.For example, can on one of edge of blade, blade be connected on some other strutting pieces of receiver by this structure.Therewith relatively, armature can be installed on the receiver assembly rigidly, thereby make the motion of armature comprise the bending of armature.
Under the situation of vibration balancing receiver, the linkage component (or a plurality of linkage component) that connects armature and blade (or a plurality of blade) can be motion changed course type (such as the linkage component of discussing and introducing in the above-mentioned U.S. Patent application), thereby makes the speed of armature and blade to be connected point on the linkage component separately everywhere on different directions at them.Under the environment of motion changed course linkage component, the method for vibration balancing is to adjust the quality of blade (or a plurality of blade), becomes up to the aggregated momentum of vibrating membrane or a plurality of vibrating membranes to equate with the aggregated momentum of armature basically and opposite.
Usually, compare with the amplitude of the speed at linkage component and tie point armature place, motion changed course linkage component both can amplify the amplitude that also can reduce in the speed at the tie point place of itself and blade.In other words, linkage component can be with the ratio of non-1: 1 value (but any set point value in the suitable scope is for example high to 10: 1, is low to moderate 1: 10 value) constraint blade velocity and armature speed.In these cases, because aggregated momentum is the physical quantity that will reduce in the receiver assembly, and because the momentum of blade is the product of its quality and speed, so the desired value of the quality of blade can be different from the quality of armature.Even so, the vibration balancing of the given degree of realization also requires and the quality of blade accurately must be controlled to be particular value in receiver.The quality of the part outside the blade of vibrating membrane or a plurality of blade also can be adjusted, but the characteristic of other vibrating membrane part is subjected to the constraint that other acoustical behavior requires usually.That equally,, also can adjust the quality of armature, but the armature quality can not change at will normally in receiver, because will have influence on other performance characteristics in order to realize the purpose of vibration balancing.
The successful degree of this vibration balancing method depends on the motion consistency of blade as the rigid body that is hinged at least in part.When using existing blade, because the rigidity deficiency of blade, so the vibration balancing method only can be succeedd when frequency is lower than 3.5KHz.When driving existing blade with upper frequency, blade can begin obvious bending, and during especially near 7.5KHz, this moment, existing blade can experience the mechanical resonance that causes the blade bending.This resonance bending has changed blade in the speed at linkage unit tie point place and the ratio between the coupled vibration film momentum.The result is the balance of having destroyed between armature momentum and the global vibration film momentum.The value of blade resonance frequency (under the situation of existing blade is 7.5KHz) is the direct sign of enough property of blade rigid.
Motion changed course linkage component can be embodied as pantograph (pantograph) type assembly, it utilizes the motion of armature to produce the vibrating membrane motion equal and opposite with the motion of armature.This linkage unit can be formed by thin foil (foil), and this is because it can obtain the characteristic of low quality, high mechanical elasticity and low mechanical fatigue.The also necessary meeting geometric tolerance standard of linkage unit, this is that it must realize accurate counter motion because will realize the purpose of vibration balancing, simultaneously also because it must be assemblied between armature and the vibrating membrane suitably.The early development of receiver design depends at first by the paper tinsel base (foil blank) through light-composited film makes linkage unit (shown in accompanying drawing 6A) by hand.By a plurality of manual folding steps, forming rhombus has leg linkage unit (as shown in accompanying drawing 6B).With regard to output and part quality, make linkage component by hand and be proved to be unacceptable.Because the intrinsic property difference of artisan craftsmanship exists the crooked and distortion of unacceptable degree in most of fabricated parts.Because desired formation operation amount is many and complicated, artisan craftsmanship output is very low.
The utility model content
The utility model is in view of above problem proposes, and its objective is provides a kind of vibrating membrane that is used for receiver, can make receiver realize good vibration balancing.
To achieve these goals, according to an aspect of the present utility model, a kind of vibrating membrane that is used for receiver is provided, the armature that this receiver has linkage unit and combines with it, this armature has first inertia mass, it is characterized in that described vibrating membrane comprises: tie point is used for being attached to linkage unit with ways of connecting; And blade, motion in response to linkage unit, this blade is smooth generally, have upper surface and lower surface, this blade has defined a plane, this blade is used for producing acoustic pressure according to the motion of linkage unit, and wherein this blade has second inertia mass, so that the momentum approximately equal that the momentum that is produced by the motion of armature and motion by vibrating membrane produce.
According to another aspect of the present utility model, a kind of vibrating membrane that is used for receiver is provided, the armature that this receiver has linkage unit and combines with it, this armature has first inertia mass, it is characterized in that, described vibrating membrane comprises: tie point is used for being attached to linkage unit with ways of connecting; And blade, in response to the motion of linkage unit, this blade is smooth generally, have upper surface and lower surface, this blade has defined a plane, and this blade is used for producing acoustic pressure according to the motion of linkage unit, and wherein this blade has the low-limit frequency resonance greater than 7.5KHz.
According to another aspect of the present utility model, a kind of vibrating membrane that is used for receiver is provided, the armature that this receiver has linkage unit and combines with it, this armature has first inertia mass, it is characterized in that, described vibrating membrane comprises: tie point is used for being attached to linkage unit with ways of connecting; And blade, motion in response to linkage unit, this blade is smooth generally, have upper surface and lower surface, this blade has defined a plane, and this blade is used for producing acoustic pressure according to the motion of linkage unit, and wherein this blade has the low-limit frequency resonance greater than 7.5KHz, and have second inertia mass, so that make the momentum approximately equal that momentum that motion by armature produces and motion by vibrating membrane produce.
According to the vibrating membrane that is used for receiver of the present utility model, can in receiver, realize the vibration balancing of given degree.
Description of drawings
Accompanying drawing 1 is the schematic diagram of the linkage unit that uses in the vibration balancing receiver assembly of one of embodiment that is introduced;
Accompanying drawing 2 is sectional views of the individual layer blade introduced among the embodiment;
Accompanying drawing 3 is sectional views of the two-layer blade introduced among another embodiment;
Accompanying drawing 4 is sectional views of the multilayer blade introduced among another embodiment;
Accompanying drawing 5 is the schematic diagrames as the vertical vibration load of the function of frequency level;
Accompanying drawing 6A shows the schematic diagram through the paper tinsel base of light-composited film that is used to make by hand linkage unit;
Accompanying drawing 6B shows the schematic diagram of the linkage unit of making by manual bending paper tinsel base;
Accompanying drawing 7A-7C shows the schematic diagram of a series of manufacturing steps of being introduced among the embodiment that are used to form linkage unit;
Accompanying drawing 7D is the schematic diagram of expression by the finished product linkage unit of the step making shown in the employing accompanying drawing 7A-7C;
Accompanying drawing 8A-8Q shows the schematic diagram of a series of manufacturing steps of being introduced among another embodiment that are used to form linkage unit;
Accompanying drawing 9 is the diagrams that have the film of a plurality of shaping linkage units;
Accompanying drawing 10A-10K shows the sectional view of the manufacturing step of being introduced among another embodiment that is used to form linkage unit.
Embodiment
Though the mode with example has provided some embodiment in the accompanying drawings, and this paper describes these embodiment in detail, allows the present invention is carried out various modifications and replacement.Thereby, be to be understood that, present disclosure is not the particular form of introducing in order to limit the invention to, but opposite, the present invention is intended to cover all modifications embodiment, alternative embodiment and the equivalent that is within the defined the spirit and scope of the present invention of appending claims.
Will find out among the embodiment that introduces from below that the vibration balancing receiver assembly can comprise the shell that receiver is used.This shell can have sound outlet.One or more vibrating membranes can be set in shell, and each vibrating membrane comprises blade, and each blade has one deck at least.Armature is operatively coupled on one or more linkage units.Each such linkage unit is operatively coupled on one or more vibrating membranes, so that the voice output in response to the receiver assembly of the motion of armature to be provided.Each linkage unit can become the movement conversion on the direction of armature vibrating membrane along the moving of another direction, and this another direction can be different from the direction of armature movement.Can select the relative amplitude of the motion of armature and vibrating membrane and the moving-mass or the inertia mass of direction and armature and one or more blades, so that the momentum of armature becomes and equates with the aggregated momentum of all vibrating membranes basically and opposite.
In order to keep the vibration balancing of given degree in the frequency range of hearing assistance system, make the low-limit frequency of the blade resonance of blade bending must be in or be higher than such frequency: this frequency is within the specific ratio with the ratio that hearing assistance system applies the peak frequency of amplification.The ratio of minimum blade resonance frequency and hearing assistance system peak frequency depends on the degree of the vibration balancing that will realize.Realize that vibration balancing completely is corresponding to higher frequency ratio minimum value relatively.As concrete example, if require 90% vibration balancing, that is, the amount of the clean remaining uneven momentum of maximum permission is 10% of an initial armature momentum, and then frequency ratio must be 2: 1 at least.Continue this example, the current hearing assistance system that is used for auxiliary slight hearing impairment is used the upper limit of amplifying and is reached about 7KHz, this means that for 90% vibration balancing is provided, needing minimum blade bending resonance frequency is 14KHz or higher blade in the frequency range of hearing assistance system.
Blade construction
Accompanying drawing 1 shows an embodiment and each part of receiver 100.Receiver 100 comprises shell 112, and this shell 112 has at least one delivery outlet (not shown).Shell 112 can be the square-section, has flat-top 112a, bottom 112b and sidewall 112c.Certainly shell 112 also can show as different shape (for example, cylindrical, D shape or trapezoidal) and have multiple different size.Receiver assembly 100 is gone back involving vibrations film 118, armature 124, drive magnet 132, yoke 138, drive coil (not shown) and linkage unit 140.One of ordinary skill in the art would recognize that the principle and advantage of the embodiment that this paper introduced can be used by all types of receivers, such as receiver with U-shaped or E shape armature.
Vibrating membrane 118 and armature 124 all operationally are installed on the linkage unit 140.In other embodiments, in receiver 100, can use vibrating membrane more than one.Vibrating membrane 118 comprises blade 142 and the film (not shown) that is attached on this blade 142.Shown blade 142 has one deck at least.But, blade 142 also can adopt multilayer, and such embodiment will be discussed in further detail.Shown linkage unit 140 is as general as quadrangle, has a plurality of member 140a, 140b, 140c, 140d and summit 140e, 140f, 140g, 140h.Linkage unit 140 can show as different shape (for example, class elliptical shape (such as Long Circle, avette), ellipse, hexagon, octagon or sphere) and can have the different deviation in roundness of deviation.Shown member 140a, 140b, 140c, 140d are straight basically and link together at summit 140e, 140f, 140g, 140h place.Transition from a member to its adjacent members can be precipitous and form acute angle, such as summit 140g, 140h, perhaps can be enlarging and have at least one hyphen section (span), such as summit 140e, 140f.
In general, near the free space the receiver shell intra vane is subjected to the restriction of the constraints relevant with the overall dimensions of receiver shell.Introduce in the U.S. Patent application as mentioned above like that, motion changed course link gear can be embodied as flexible ceremony assembly, the motion that it utilizes the motion of armature to produce vibrating membrane, the motion of vibrating membrane is equal with the motion of armature and direction is opposite.Linkage unit can form with thin foil, because can obtain the characteristic of low quality, high mechanical flexibility and low mechanical fatigue like this.The also necessary meeting geometric tolerance standard of linkage unit, this is because the reason of two aspects: in order to realize vibration balancing, it must realize accurate counter motion, and it must be assemblied between armature and the vibrating membrane suitably.
Accompanying drawing 2 is sectional views of the example blade 242 that can use in various receivers (comprising and the similar receiver of the receiver assembly 100 shown in the accompanying drawing 1).Blade 242 comprises one deck 244 at least.Blade 242 can be designed to have the inertia mass that produces the balanced momentum of momentum that makes armature 124 (as shown in Figure 1).Layer 244 can be made of aluminum, has the thickness near 0.010 inch (250 μ m) in one embodiment, and in this case, length is that the low-limit frequency flexural resonance of the blade of 0.25 inch (typical blade length) has the frequency of about 21KHz.But, also can use any material that meets following requirement: this material has enough density makes the momentum that the momentum of the blade 242 of generation can balanced armature 124 in the free space of output chamber, and make blade 242 have enough rigidity, so that the frequency of its first mechanical resonance (for example exceeds design object, as mentioned above, 14KHz).For example, titanium, tungsten or some composite material such as plastic matrix, fiber reinforced plastic or their composition, may can satisfy so mechanical requirement.
Accompanying drawing 3 is sectional views of the another kind of example blade 342 that can use in various receivers (comprising and the receiver assembly 100 similar receivers shown in the accompanying drawing 2).Blade 342 comprises internal layer 344 and at least one skin 346.Internal layer 344 comprises first surface 344a and second surface 344b.For example,, pressurization bonding or carry out mechanical connection in edge skin 346 is connected on the second surface 344b by carrying out with bonding agent.In one example, internal layer 344 is that the aluminium of 0.007 inch (175 μ m) is made by thickness, and outer 346 be that the stainless steel of 0.001 inch (25 μ m) is made by thickness.In this example, the gross thickness of blade is 0.008 inch (200 μ m), leaf quality provides equilibrium momentum for the momentum of the armature 124 of accompanying drawing 1, minimum flexural resonance frequency is about 18KHz, and total vane thickness is less than common blade, thereby taken less space in the output chamber of receiver 100.Should be understood that also can adopt introduce above outside layer thickness and material.For example, within the spatial limitation of receiver 100, can adopt the mechanical fasteners that is used for influencing resonance frequency, layer 344,346 one or both of can have fold (corrugation), curved edge or other boundary form, increase rigidity, and therefore improve the resonance frequency of blade.Depend on that this structure satisfies the ability of required mechanical property, these layers can not have identical size.Similarly, other metal or synthetic (such as titanium, tungsten, platinum, copper, brass or their alloy) or nonmetal (such as plastics, plastic matrix, fiber reinforced plastic) or these nonmetallic compounds, can provide inertia mass and resonance frequency required mechanical performance, but, because the consideration of others, such as cost, be not all to be practical for all application.
Accompanying drawing 4 is sectional views of the another kind of example blade 442 that can use in various receivers (comprising and the receiver assembly 100 similar receivers shown in the accompanying drawing 1).Blade 442 comprises ground floor 444, the second layer 446 and the 3rd layer 448.The second layer 446 is attached on the ground floor 444 along interface 444b.Be attached on the second layer 446 along interface 446b for the 3rd layer 448.Blade 442 can combine with other parts (not shown) of vibration membrane module 118 and be connected on the linkage unit 140 shown in the accompanying drawing 1 subsequently.In a kind of example, first and the 3rd layer 444,448 can be formed by the material of high elastic modulus, such as stainless steel, copper, brass or beryllium copper (BeCu), and has the thickness of about 0.0015 inch (37.5 μ m).The material of the second layer 446 (preferably has low-density, such as upgrading ethane-acetic acid ethyenyl ester thermoplastic adhesive, thermosetting bonding agent, epoxy resin or polyimides (Kapton)) with acting on first and the 3rd layer bonding agent of bonding this structure and having increased the moment of flexure (bending moment) of blade, therefore improved the resonance frequency of blade, and obviously not increasing quality, this second layer 446 has 0.003 inch (75 μ m) thickness to 0.004 inch (100 μ m).The feasible equilibrium momentum that can obtain the armature of accompanying drawing 1 of leaf quality, and sandwich construction has caused being about the low-limit frequency blade resonance of 15.3KHz.The general thickness of blade 442 can be low to moderate 0.006 inch (150 μ m), needs less space like this in the output chamber of receiver.Should be appreciated that and equally also can adopt these thickness introduced above and thickness and the material outside the material.For example, first and the 3rd layer 444,448 thickness can be the second layer 446 thickness 10% to 200%, as long as blade 442 satisfies the constraintss to momentum balance and flexural resonance frequency.The manufacture process of blade 142 can comprise the thin slice of assembling ground floor and the 3rd layer on the surperficial 446b by the surperficial 444b that the second layer is arranged on ground floor or the 3rd layer.The second layer if bonding agent then can handle by wire mark or spin coating technique, to obtain homogeneous thickness.In one embodiment, the thin slice that combines is cured, then with laser from this thin slice cutting each blade 142 and being connected on other vibrating membrane part down, thereby be assembled in the receiver 100.Other cutting techniques is known in the art, such as punching press.If utilize fastening this assembly of curved edge, then can adopt the punching press of being undertaken by specific purpose tool.
The selection of minimum resonant frequencies is to be determined by the electronic installation of using and supporting.In certain embodiments, using does not need wide frequency range, and the resonance frequency that is higher than 7.5KHz just can meet the requirements.In other application, may need the above resonance frequency of 14KHz.In other is used again, the electronic installation that may be equipped with receiver is easily to limit the feedback more than the given frequency, this can realize by the notch filter of special use, perhaps simply by on resonance frequency or the amplifier that is higher than resonance frequency roll-off (roll out) realize.Can realize the adjustment of this filter or amplifier by those skilled in the art, satisfying these purposes, and not need to carry out too much experiment the gain of frequency.
Accompanying drawing 5 is curve charts that the vertical vibration load of vertical vibration load and traditional non-vibration balance receiver 502 of per unit current excitation of receiver coil 502 of vibration balancing receiver that will be used to comprise the blade of the type shown in the accompanying drawing 4 compares, and is the function of driving frequency.This curve chart shows that on all frequencies of 7KHz, vertical vibration load all is improved.
Flexible ceremony linkage unit
Accompanying drawing 6A and 6B show through the paper tinsel base 600 of light-composited film and the schematic diagram of the linkage unit 602 that uses this paper tinsel base 600 to make.The early development of receiver design depends at first by the paper tinsel base 600 through light-composited film shown in the accompanying drawing 6A makes linkage unit 602 by hand.By a plurality of manual folding steps, forming the rhombus shown in the accompanying drawing 6B has leg linkage unit 602.With regard to output and part quality, make linkage component by hand and be proved to be unacceptable.Because the intrinsic property difference of artisan craftsmanship exists the crooked and distortion of unacceptable degree in most of fabricated parts.Because desired formation operation amount is many and complicated, thereby artisan craftsmanship output is very low.
Except pursuing miniaturization, wish also to make that the manufacturing of linkage unit structure can cheap as far as possible and further reduce the labour intensity of producing in enormous quantities.
Accompanying drawing 7A shows a series of manufacturing process to 7D, obtains accompanying drawing 7D through these technologies, has provided linkage unit 740 in accompanying drawing 7D.Linkage unit 740 is made by flat blank (flat stock material) typically, and such as metal tape or paper tinsel 742, shown in accompanying drawing 7A, it has and defines plane, width and with the surface 745 of the vertical slit 744 in 742 the middle section.In addition, linkage unit 740 can be made by plastics or certain other material." rhombus " part of linkage unit is to use the punch die (die) 746,748 of two complementary shapes to form in single formation operation, and these two punch dies make first and second parts with 742 be subjected to displacement with respect to described plane.In other words, punch die 746 separates the foil material with crooked slit 744 both sides with 748, to form member 704a, 740b, 740c, 740d and summit 740e, 740f, 740g, the 740h of flexible ceremony " rhombus " part shown in the accompanying drawing 7D.Inchoate base zone in this step (Outboard Sections of center just) is directed, but is not clamped by 750,752 of modules near this punch die.With reference to Fig. 7 C, the rhombus part is caught by the punch die 746,748 of two complementations, and the first and second leg 740i, 740j form by going up bootstrap block 750,752 to two of lower slider.Linkage unit 740 is finished and is ready to and is installed in the receiver.Linkage unit 740 can be fixed on the respective surfaces (not shown) of receiver assembly 100 in shell 112 then.
Accompanying drawing 8A shows punching press (blanking) and the formation sequence of using the manufacturing process that progressive die (progressive die) carries out to 8F, specific to accompanying drawing 8P, show the linkage unit 840 that can in receiver (such as the receiver 100 shown in the accompanying drawing 1), use.Progressive die is widely known by the people in the art already.It is to carry out on the former blank (starting stock material) that has such as the continuous shape of bar or band that progressive die is made operate typical ground.Use the sequential working platform on the base surface, to carry out operation, the cutting of carrying out raw material, pruning or perforation such as the punching press of fin, projection, producing required hole, slit or overall shape, and/or raw material is bent, to produce three-dimensional overall shape.The conitnuous forms of former blank allow to realize partly single parts, and these parts still are connected on the blank, delivering to next workbench from a workbench lumpedly, and do not need carrying and location various piece.Like this, therefore each press work platform will be disposed especially, but generally be still conventional drift/die assembly in other respects, that mentioned and presumable other production process above their co-operate realize.Also can be used in combination laser pressing, cutting, pruning or perforation with the progressive die Sheet Metal Forming Technology.
Accompanying drawing 8A for example shows as mentioned above the stereogram through the flat blank 800 (such as the paper tinsel base) of progressive die machine (not shown) Local treatment.Flat blank 800 defines a plane.And show a plurality of drifts and punch die structure 802 and 818-820.Drift and die assembly 802,818-820 pass that punch die is propagated and provide path required for the follow-up laser operations after the formation of linkage unit 140 is finished.As shown in the figure, show first pre-first hole 824 that forms base (preform) 822 and stamp out in this pre-central area that forms base 822.As shown in the figure, also show second relative pre-second hole 828 that forms base 826 and in these pre-formation base 826 central areas, stamp out.The first pre-base 822 of forming is subjected to displacement with respect to the plane.The second pre-base 826 of forming is subjected to displacement with respect to the plane, and will form base 826 elastic deformations similarly in advance is second linkage component with half diamond structure.Show the 3rd pre-base 830 that forms.In one embodiment, form base 822,826 in advance and have identical width with 830 shank branch.
" diamond shape " of linkage unit 140 is to form during the leg bending operation of the first and second pre-formation bases 822,826.First bending operation carries out the 3rd pre-formation on the base 830, in order to the linkage unit supporting leg is rotated in the plane with " diamond shape ", shown in accompanying drawing 8B.Accompanying drawing 8C shows and rotates to supporting leg 840q and the 840r that aligns with the first and second pre-formation bases 822,826 respectively.Coiled structure (crimp structure) 860a, 860b provide first, second and the 3rd pre-mechanical connection that forms base 822,826 and 830, to guarantee the firm of assembly.Coiled structure 860a, 860b provide mechanical support for this structure in operating process, and in welding, bonding agent is bonding or other the mechanical connection such as riveted joint or snapping is stablized assembly before finishing.In addition, the connection power that can rely within coiled structure 860a, the 860b self provides the required mechanical integrity of interlock assembly operation in the finished product receiver.Accompanying drawing 8D shows coiled structure and laser and enters size relationship between opening 818 and the coiled structure 860a.Can pass the plane of raw band 800 such as the laser beam that is used to weld, so that reach coiled structure 860a unobstructedly.Embodiment shown in the accompanying drawing 8E also has the installed surface 880 that assembling is used in receiver 100.Then can be by removing or cut each pre-base 822,826,830 strutting piece 870a, 870b and 870c of forming, the linkage unit finished 140 is cut down from support belt.As required, can make linkage unit 140 keep coupled situation, so that the receiver assembly that uses flat blank 900 to carry out other is handled.Blank can also be segmented into the linkage unit of predetermined quantity, as shown in Figure 9.It should be noted that the bending or their any part that are used to form linkage unit 140 all are no more than 90 degree.And the free leg that forms base in advance is no more than twice bending in final location with before fixing.This has simplified progressive die processing and has improved dimensional accuracy by the composite error that reduces to form in the form process.Also reduced the stress in the introducing of place, inflection point, this stress may cause fault because of metal fatigue later.
Accompanying drawing 9 show kept original blank and as the delivery system of a plurality of (that is, shown 10) linkage unit 140 with 900 schematic diagram.Use is carried out in the ARRAY PROCESSING mode with 900 follow-up assembly operation.Employing can productivity gain with 900 form, and has reduced because the chance that the single part carrying causes linkage unit 140 to damage.In operating process, will be with 900 to be arranged near corresponding receiver shell 112 arrays and to align with it.To move to against the position of receiver shell 112 with 900, make the short projection 880 of assembling can slide in the corresponding groove 160 on the one other component of receiver 100.Can weld or bonding agent drawn and deliver on groove/weak point projection 160,880 assemblies.As required, when inserting the short projection 880 of linkage unit, can there be armature 124 and vibrating membrane 118, do not hinder and do not have machinery.Armature 124 and vibrating membrane 118 can be fixed on the linkage unit 140 by laser welding or by the bonding agent coating in same operating process.By at least once connecting after each linkage unit 140 in will be with 900 is fixed on its corresponding receiver assembly, then can be by cut-out connector 870a, 870b and 870c with linkage unit 140 from being with 900 to separate.In one embodiment, used the same laser that is used for the short projection 880 of each linkage unit connection is welded on its receiver sub-component to come from being with the corresponding linkage unit 140 of 900 cuttings.
Accompanying drawing 8A is to the specific embodiment of the progressive die method shown in the accompanying drawing 8E and do not mean that and will limit the scope of the invention.For example, accompanying drawing 8F shows the linkage unit 740 of the optional form that can use the making of progressive die method, does not wherein exist to connect short projection 880.The linkage unit of this embodiment can be by welding, or the base 890 by the ceremony of will stretching or be bonded on the bottom of shell 112 relatively, and attached on the receiver 100.
Accompanying drawing 10A-K shows the sectional view at the bending order of the linkage unit of another embodiment of the present invention.Parts 1000 and 1002 are from having suitable Memorability and elasticity to select the metal of the work of supporting receiver or other material, in other words, it must the frequency with thousands of cycles of per second be sent to vibrating membrane 118 with energy from armature 124 in the useful life (in most cases being the several years) of receiver 100.Raw material have the form of band, and its width equals the expectation finished width of the flexible ceremony member 140a shown in the accompanying drawing 1,140b, 140c, 140d.Accompanying drawing 10A shows the structure of first parts 1000.The structure of second parts 1002 is shown in the accompanying drawing 10F.First parts 1000 form by sequential forming, to form the leg and the top structure of linkage unit 140.Second parts 1002 also can form by the order bending.The accurate angle of each bending is by the decision of the length of the width of the distance between vibrating membrane 118 and the armature 124, linkage unit 140 and linkage unit 140 supporting leg 140i, 140j.Definite and the bending of angle requires to be easy to be drawn by those skilled in the art.In accompanying drawing 10B, carried out first bending near 62 degree, defined first leg.Shown in accompanying drawing 10C, carried out second bending near 28 degree, defined the first at the top of linkage unit 140.Shown in accompanying drawing 10D, carried out bending near 28 degree, formed vibrating membrane 118 conjunction planes.Accompanying drawing 10E shows the last bending near 62 degree, has formed the second portion and second supporting leg at the top of linkage unit 140.Second parts 1002 are by being bent to form near first of 124 degree shown in the accompanying drawing 10G, have produced short projection is installed.First base section that has been bent to form linkage unit 140 near second of 28 degree shown in the accompanying drawing 10H.Be bent to form near the 3rd of 28 degree and be connected surface part accordingly with the vibrating membrane at the top of linkage unit.Accompanying drawing 10J shows and is used to form the second last bending near 124 degree that short projection is installed.Assembly 1002 is placed between 1000 the leg structure, forming linkage unit 140, and by welding or bonding the connection, shown in accompanying drawing 10K.Though this building method has produced effective and practical linkage unit 140, the cumulative errors of bending angle and can cause the mechanical stress of undesirable variability, loss in productivity and each parts greater than the bendings of 90 degree.
All lists of references that this paper quoted, comprise publication, patent application and patent, with being incorporated herein of way of reference, reach just as with each list of references separately and particularly to be illustrated and in this article the way of reference of the whole same degree that proposes incorporate into.
(especially in the context of appended claims) uses term " ", " one " and " being somebody's turn to do " and the similar object that refers to should be understood to and comprised single and a plurality of two kinds of situations in introducing context of the present invention, unless this paper has in addition and illustrates or clearly denied by context.Herein number range only enumerate the effect that intention plays the reduced representation method of quoting each discrete value that drops within this scope separately, unless this paper has explanation in addition, and each discrete numerical value is attached in this specification, similarly be this paper each enumerate.All methods that this paper introduces can realize with any suitable order, unless this paper has explanation or clearly negative by context in addition.The use intention of any and all examples that provide herein or illustrative language (for example, " such as ") only is to illustrate the present invention better, rather than scope of the present invention is construed as limiting, unless otherwise stated.The cell descriptions that all language in the specification all should not be construed as any failed call protection is the requisite feature of realization the present invention.
This paper has introduced the preferred embodiments of the present invention, comprises realization known for inventor optimal mode of the present invention.Should be appreciated that illustrated embodiment only is exemplary, and should not bring and limit the scope of the invention.
Claims (32)
1. vibrating membrane that is used for receiver, the armature that this receiver has linkage unit and combines with it, this armature has first inertia mass, it is characterized in that, and described vibrating membrane comprises:
Tie point is used for being attached to linkage unit with ways of connecting; With
Blade, motion in response to linkage unit, this blade is smooth generally, have upper surface and lower surface, this blade has defined a plane, this blade is used for producing acoustic pressure according to the motion of linkage unit, and wherein this blade has second inertia mass, so that the momentum approximately equal that the momentum that is produced by the motion of armature and motion by vibrating membrane produce.
2. vibrating membrane according to claim 1 is characterized in that blade also comprises:
Ground floor has first upper surface and first lower surface; With
The second layer has second upper surface and second lower surface, and second upper surface contacts with first lower surface, and wherein at least one in these layers is metal level or synthetic layer.
3. vibrating membrane according to claim 2 is characterized in that described blade has the bonding agent between first and second layers.
4. vibrating membrane according to claim 2 is characterized in that, described metal is a kind of in aluminium, titanium, tungsten, stainless steel, copper, brass, beryllium copper and the platinum.
5. vibrating membrane according to claim 2 is characterized in that ground floor is thicker than the second layer.
6. vibrating membrane according to claim 2 is characterized in that first lower surface is greater than second upper surface.
7. vibrating membrane according to claim 2 is characterized in that first upper surface is a fold, thereby has increased rigidity and improved the resonance frequency of vibrating membrane.
8. vibrating membrane according to claim 1 is characterized in that blade has the marginal portion that is formed at outside the described plane, thereby has increased rigidity and improved the resonance frequency of vibrating membrane.
9. vibrating membrane according to claim 1 is characterized in that blade is a fold, thereby has increased rigidity and improved the resonance frequency of vibrating membrane.
10. vibrating membrane according to claim 1 is characterized in that blade also comprises:
Ground floor has first upper surface and first lower surface;
The second layer, have second upper surface and second lower surface and
The 3rd layer, have the 3rd upper surface and the 3rd lower surface, wherein second upper surface contacts with first lower surface, and second lower surface contacts with the 3rd upper surface, and wherein the second layer is a kind of in thermoplastic adhesive, thermosetting bonding agent, polyimides and the epoxy resin.
11. vibrating membrane according to claim 10 is characterized in that, the second layer provides the interval between first and the 3rd layer, and the second layer has than other layer low density one of at least.
12. vibrating membrane according to claim 10 is characterized in that, the thickness of ground floor between the thickness of the second layer 10% and 200% between.
13. vibrating membrane according to claim 1 is characterized in that, the resonance frequency of vibrating membrane is higher than 7.5KHz.
14. vibrating membrane according to claim 1 is characterized in that, the resonance frequency of vibrating membrane is higher than 14KHz.
15. a vibrating membrane that is used for receiver, the armature that this receiver has linkage unit and combines with it, this armature has first inertia mass, it is characterized in that, and described vibrating membrane comprises:
Tie point is used for being attached to linkage unit with ways of connecting; With
Blade, in response to the motion of linkage unit, this blade is smooth generally, have upper surface and lower surface, this blade has defined a plane, and this blade is used for producing acoustic pressure according to the motion of linkage unit, and wherein this blade has the low-limit frequency resonance greater than 7.5KHz.
16. vibrating membrane according to claim 15 is characterized in that, blade also comprises:
Ground floor has first upper surface and first lower surface; With
The second layer has second upper surface and second lower surface, and second upper surface contacts with first lower surface, and wherein at least one in these layers is metal level or synthetic layer.
17. vibrating membrane according to claim 16 is characterized in that, described metal is a kind of in aluminium, titanium, tungsten, stainless steel, copper, brass, beryllium copper and the platinum.
18. vibrating membrane according to claim 15 is characterized in that, blade also comprises:
Ground floor has first upper surface and first lower surface;
The second layer, have second upper surface and second lower surface and
The 3rd layer, have the 3rd upper surface and the 3rd lower surface, wherein second upper surface contacts with first lower surface, and second lower surface contacts with the 3rd upper surface, and wherein the second layer is a kind of in thermoplastic adhesive, thermosetting bonding agent, polyimides and the epoxy resin.
19. vibrating membrane according to claim 18 is characterized in that, the second layer provides the interval between first and the 3rd layer, and the second layer has than low density one of at least in other layer.
20. vibrating membrane according to claim 15 is characterized in that, the thickness of ground floor between the thickness of the second layer 10% and 200% between.
21. a vibrating membrane that is used for receiver, the armature that this receiver has linkage unit and combines with it, this armature has first inertia mass, it is characterized in that, and described vibrating membrane comprises:
Tie point is used for being attached to linkage unit with ways of connecting; With
Blade, motion in response to linkage unit, this blade is smooth generally, have upper surface and lower surface, this blade has defined a plane, and this blade is used for producing acoustic pressure according to the motion of linkage unit, and wherein this blade has the low-limit frequency resonance greater than 7.5KHz, and have second inertia mass, so that make the momentum approximately equal that momentum that motion by armature produces and motion by vibrating membrane produce.
22. vibrating membrane according to claim 21 is characterized in that, blade also comprises:
Ground floor has first upper surface and first lower surface; With
The second layer has second upper surface and second lower surface, and second upper surface contacts with first lower surface, and wherein at least one in these layers is metal level or synthetic layer.
23. vibrating membrane according to claim 21 is characterized in that, described metal is a kind of in aluminium, titanium, tungsten, stainless steel, copper, brass beryllium copper and the platinum.
24. vibrating membrane according to claim 22 is characterized in that ground floor is thicker than the second layer.
25. vibrating membrane according to claim 22, wherein first lower surface is greater than second upper surface.
26. vibrating membrane according to claim 21 is characterized in that, blade is a fold, thereby has increased rigidity and improved the resonance frequency of vibrating membrane.
27. vibrating membrane according to claim 21 is characterized in that, blade has the marginal portion that is formed at outside the plane, thereby has increased rigidity and improved the resonance frequency of vibrating membrane.
28. vibrating membrane according to claim 22 is characterized in that, blade is a fold, thereby has increased rigidity and improved the resonance frequency of vibrating membrane.
29. vibrating membrane according to claim 21 is characterized in that, blade also comprises:
Ground floor has first upper surface and first lower surface;
The second layer, have second upper surface and second lower surface and
The 3rd layer, have the 3rd upper surface and the 3rd lower surface, wherein second upper surface contacts with first lower surface, and second lower surface contacts with the 3rd upper surface, and wherein the second layer is a kind of in thermoplastic adhesive, thermosetting bonding agent, polyimides and the epoxy resin.
30. vibrating membrane according to claim 29 is characterized in that, the second layer provides the interval between first and the 3rd layer, and the second layer has than the low density of one of other layer at least.
31. vibrating membrane according to claim 29 is characterized in that, the thickness of ground floor between the thickness of the second layer 10% and 200% between.
32. vibrating membrane according to claim 21 is characterized in that, the resonance frequency of vibrating membrane is for being higher than 14KHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520118855 CN2899360Y (en) | 2005-09-12 | 2005-09-12 | Oscillating diaphragm for receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520118855 CN2899360Y (en) | 2005-09-12 | 2005-09-12 | Oscillating diaphragm for receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2899360Y true CN2899360Y (en) | 2007-05-09 |
Family
ID=38074691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520118855 Expired - Lifetime CN2899360Y (en) | 2005-09-12 | 2005-09-12 | Oscillating diaphragm for receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2899360Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102065355A (en) * | 2010-05-04 | 2011-05-18 | 瑞声声学科技(深圳)有限公司 | Vibrating membrane and miniature acoustic generator comprising same |
| CN102428715A (en) * | 2009-05-11 | 2012-04-25 | 美商楼氏电子有限公司 | Low axial vibration receiver armature and assembly |
| CN102752695A (en) * | 2011-04-21 | 2012-10-24 | 中国科学院声学研究所 | High-power plane induction coil |
| US9888322B2 (en) | 2014-12-05 | 2018-02-06 | Knowles Electronics, Llc | Receiver with coil wound on a stationary ferromagnetic core |
| CN113132865A (en) * | 2019-12-30 | 2021-07-16 | 美商楼氏电子有限公司 | Balanced armature receiver |
-
2005
- 2005-09-12 CN CN 200520118855 patent/CN2899360Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102428715A (en) * | 2009-05-11 | 2012-04-25 | 美商楼氏电子有限公司 | Low axial vibration receiver armature and assembly |
| US8824726B2 (en) | 2009-05-11 | 2014-09-02 | Knowles Electronics, Llc | Low axial vibration receiver armature and assembly |
| CN102428715B (en) * | 2009-05-11 | 2014-12-31 | 美商楼氏电子有限公司 | Low axial vibration receiver armature and assembly |
| CN102065355A (en) * | 2010-05-04 | 2011-05-18 | 瑞声声学科技(深圳)有限公司 | Vibrating membrane and miniature acoustic generator comprising same |
| CN102752695A (en) * | 2011-04-21 | 2012-10-24 | 中国科学院声学研究所 | High-power plane induction coil |
| US9888322B2 (en) | 2014-12-05 | 2018-02-06 | Knowles Electronics, Llc | Receiver with coil wound on a stationary ferromagnetic core |
| CN113132865A (en) * | 2019-12-30 | 2021-07-16 | 美商楼氏电子有限公司 | Balanced armature receiver |
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