CN1130459A - Receiver for hearing aid - Google Patents

Receiver for hearing aid Download PDF

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Publication number
CN1130459A
CN1130459A CN94193249A CN94193249A CN1130459A CN 1130459 A CN1130459 A CN 1130459A CN 94193249 A CN94193249 A CN 94193249A CN 94193249 A CN94193249 A CN 94193249A CN 1130459 A CN1130459 A CN 1130459A
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CN
China
Prior art keywords
audiphone
sheet
housing parts
shakes
shell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN94193249A
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Chinese (zh)
Inventor
A·F·莫斯塔多
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Knowles Electronics LLC
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Knowles Electronics LLC
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Publication of CN1130459A publication Critical patent/CN1130459A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/48Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using constructional means for obtaining a desired frequency response
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/60Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
    • H04R25/604Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/43Signal processing in hearing aids to enhance the speech intelligibility
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/60Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/65Housing parts, e.g. shells, tips or moulds, or their manufacture

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

A compact receiver for a hearing aid is disclosed. According to one embodiment, the receiver includes a housing portion. A diaphragm having a plurality of peripheral edges is disposed within the housing portion and defines first and second acoustical chambers. One of the diaphragm peripheral edges is pivotally coupled to the housing. The remaining edges are compliantly coupled to the housing. An electromagnetic motor includes an armature. A compliant bond couples the armature to the diaphragm to move the diaphragm at frequencies in accordance with an electrical signal applied to the motor. First and second outlet ports extend through the housing. The first outlet port is acoustically coupled to the first chamber, and the second outlet port is acoustically coupled to the second chamber. The first and second outlet ports, in conjunction with the first and second chambers, cooperate to cancel low frequency sound, resulting in the receiver having a generally high-frequency band pass frequency response. In another embodiment, the first port is eliminated, resulting in the receiver having a generally broad band frequency response. In a still further embodiment, two of the broad band receivers are combined back-to-back, resulting in a receiver having twice the output amplitude as a single one of the receivers, while reducing vibration, as the respective armatures vibrate 180 DEG C out-of-phase. A cerumen blocking boot is also disclosed for preventing entry of cerumen into the receiver sound port.

Description

The audiphone that is used for hearing aids
Technical field
The present invention relates to be used for the miniature audiphone of hearing aids.
Background technology
Such as the miniature audiphone that is used for hearing aids is known.Usually, such audiphone is designed, make it can provide certain frequency response characteristic to realize specific result.For example, the U.S. Patent No. 5,068,901 of Carlson has been discussed the following fact: many people's hearing loss is mainly at high frequency.Therefore Carlson provides the hearing aids transducer of two exit passageways, and this transducer has a pair of elongated voice tube, and this can produce a high passband to voice tube.This audiphone can be assisted the user preferably at the upper frequency of hearing impairment, and can also eliminate low frequency effectively and transmit.For making the user can hear low frequency, provide a transaudient passage of low frequency that is parallel to hearing aids.This transaudient this hearing aids of passage bypass allows the user can directly hear low frequency.
Hearing aids transducer at many application scenario Carlson is all worked satisfactorily; But elongated voice tube makes the further microminiaturization of hearing aids very difficult.
It is in order to address these problems and other some problems that the present invention is provided.
Summary of the invention
An object of the present invention is to provide a kind of logical audiphone of miniature band that is used for hearing aids, for example can be used in combination, be used for the personnel of high frequency hearing impairment with a hearing aids.
By the present invention, audiphone comprises a shell, and this shell for example is a D type cross section.D shape structure makes audiphone can put into the slot part of hearing aids more easily.The sheet that shakes with a plurality of periphery edges is provided.This sheet that shakes is located in the shell and has determined first and second sound chambers in shell.One of the sheet periphery edge that shakes is fixed on the shell by pivotable mode.Edge that can also this is pivotable further is fixed on the shell preventing by binding agent (as, epoxy resin) and laterally moves.The remaining edge of sheet of shaking is fixed on the shell flexibly.Comprise that the former moving device of the electromagnetism of a magnetic tongue forms the part of shell, and the device that magnetic tongue is coupled to the sheet that shakes is provided, so that can be according to the frequency action that is added to the signal of telecommunication on the former moving device sheet that shakes.First and second outlets extend through shell.To first Room, the second outlet acoustical coupling is to second Room through the acoustical coupling of a pipe in first outlet.First and second openings serve as reasons shake sheet vibration the result and the acoustical vibration that produces provides outlet.Low-frequency sound wave has been eliminated in the co-operating of first and second sound chambers, has produced the high frequency sound wave of required frequency simultaneously.In the above-mentioned Carlson patent of quoting, this phenomenon was done explanation more all sidedly.
It is contemplated that by a kind of flexibility compound, for example sclerometer hardness is A22 or littler flexible RTV, and magnetic tongue is coupled on the sheet that shakes.
Further imagine, this audiphone comprises a pipe that is located in first sound chamber.This Guan Zaiyu first outlet stops when flushing substantially.
Provide above-mentioned audiphone down on the one hand by of the present invention, just wherein should the pipe and first outlet.Therefore do not eliminate low-frequency sound wave, so audiphone has broadband frequency response.
Of the present invention is to make up above-mentioned two audiphones back-to-back down on the one hand, and the substantially elliptical audiphone that is output as single audiphone output twice is provided.Because two magnetic tongue phase differences are 180 °, so reduced vibration in this embodiment.
From following description taken together with the accompanying drawings, will make other features and advantages of the present invention become clear.
The accompanying drawing summary
Fig. 1 is the side cutaway view by the audiphone of an aspect of of the present present invention;
Fig. 2 is the top view profile of getting along the 2-2 line of Fig. 1;
Fig. 2 a is the guide wire of alternative shape of Fig. 2;
Fig. 2 b is the zoomed-in view of another part of Fig. 2;
Fig. 3 is the end-view of getting along the 3-3 line of Fig. 1;
Fig. 4 is the exploded view of the audiphone of Fig. 1;
Fig. 5 is the logarithm frequency response curve of the audiphone of Fig. 1;
Fig. 6 is the stereogram with Fig. 1 audiphone of hearing aids combination;
Fig. 7 is the perspective view by another embodiment of the audiphone that is used for hearing aids of the present invention;
Fig. 8 is the side cutaway view of the audiphone of Fig. 7;
Fig. 9 is the logarithm frequency response curve of the audiphone of Fig. 7;
Figure 10 is the improved perspective view to the audiphone of Fig. 7;
Figure 11 is the logarithm frequency response curve of the audiphone of Figure 10;
Figure 12 is the perspective view that the audiphone to Fig. 7 is further improved;
Figure 13 is one type a logarithm frequency response curve in the audiphone of Figure 12;
Figure 14 is the logarithm frequency response curve of the another kind of type in the audiphone of Figure 12;
Figure 15 is the perspective view by another embodiment of the audiphone that is used for hearing aids of the present invention;
Figure 16 a-16e is the perspective view of various embodiment of protective cover that is used for the audiphone of hearing aids.
Describe in detail
Although the present invention may realize in many different modes, but expression in the accompanying drawings and described in detail here is the preferred embodiments of the present invention, thereby should be realized that, content disclosed herein should be regarded as the representative instance explanation of the principle of the invention, broad aspect of the present invention only is not confined to embodiment described herein.
Use is gratifying to disclosed audiphone as the high-frequency band pass audiphone in the patent of the Carlson that quotes in front, but the existence of two elongated tubulars is the further microminiaturized obstacles of hearing aids.The frequency response of Carlson audiphone has three peaks.The frequency at middle peak is near 4.5 kilo hertzs, and it is the result of former moving device resonance.The frequency at lower peak is near 3 kilo hertzs, and it is the resonance result of first elongated tubular and the combination of first Room.The frequency at higher peak is the result of the resonance of second elongated tubular and second Room combination near 5.7 kilo hertzs.The cancellation elongated tubular is considered to a further microminiaturized approach of Carlson audiphone, but because of the result who does has so also removed high and low two formants, so that the overall frequency response of this audiphone degenerate.The purpose of design of miniature audiphone is that frequency is provided in 2 cubic centimetres chamber is that 4 kilo hertzs sound pressure level is 100 decibels a response sensitivity.Therefore it is also conceivable that cancellation second pipe, thereby eliminated higher formant (5.7 kilo hertzs), also first pipe is moved in the shell simultaneously from passband.So can believe, this variation may keep lower formant (3 kilo hertzs) and middle formant (4.5 kilo hertzs), also can reduce the size of audiphone simultaneously.Can determine also that whereby this variation makes the response sensitivity at 4 kilo hertzs of places too low.The response at 4 kilo hertzs of places occurs in than among Hyporesonance peak and intermediate resonance peak-to-peak " trough ".Therefore to consider, move these peaks and make them close to each other, thereby trough can be brought up to the height of expectation.The practice routinely, the size that changes pipe are with regard to removable second or higher peak, and this is an exercising result of still staying the pipe in the shell now.But the result that this change still can not obtain expecting has also changed the frequency of first or lower formant when its reason is the size that has changed pipe.Therefore, move the resulting any improvement of frequency of second formant all by unfavorable mobile counteracting of the frequency of first formant.
The applicant recognizes, might improve first formant by the effective mass that reduces the system that magnetic tongue bears.Magnetic tongue is around generally being positioned at the some bending that magnetic tongue is fixed to shell.The applicant recognizes, the sheet edge is being fixed on the shell of audiphone with relative the naming a person for a particular job in position that magnetic tongue is coupled to the sheet that the shakes sheet that shakes along shaking, just might reduce the effective mass of the system that magnetic tongue bears, make the sheet that shakes around a lever arm pivoted that effectively shortens.The practice routinely, when the sheet that will shake was connected on the shell by pivotable mode, this sheet that shakes was just driven by a drive rod that is coupled on the former moving device magnetic tongue.Drive rod can be slight curving, so that the pivoted effect around one except that a magnetic tongue different sheet that shakes that rotates is compensated.But in miniature audiphone of the present invention, the space of location drive rod is big not enough.Therefore, the applicant has developed a kind of novel apparatus, is used for magnetic tongue is fixed to the pivotable sheet that shakes, and fixing edge coupling direction of principal axis wherein is a rigidity, then is flexible along the shear axis direction.
In the patent of Carlson, can find the more detailed explanation of the work of the logical transducer of band, here specially with reference to the specification of having quoted this patent.
According to the present invention, in Fig. 1-4, express a kind of logical audiphone 10 of miniature band that is used for hearing aids 11 (Fig. 6).Will go through more as following, audiphone 10 is extremely compact, and can also provide as shown in Figure 5 at commercial gratifying bandpass response.In the disclosed embodiment, audiphone 10 has the high-frequency band pass characteristic.
Audiphone 10 comprises a former moving device 16 of electromagnetic type and first housing parts 18.The former moving device 16 of electromagnetic type has the coil 20 of one second housing parts 17, a routine, by nickel/ferroalloy lamination 24 and two a magnet shell 22 and magnetic tongues 28 that permanent magnet 26 constitutes of routine.Second housing parts 17 is the roughly cups of D shape, is made of nickel/ferroalloy, and has end 17a and the blind end 17b that fully opens.Magnetic tongue 28 has a stiff end 28a and a free end 28b.Coil 20 is located in second housing parts 17.For example be fixedly attached on the blind end 17b of second housing parts 17 by the stiff end 28a of welding with magnetic tongue.Magnet shell 22 is held 17a near fully opening of second housing parts 17, and is fixed on this end 17a by multiple projection welding.Also can consider laser welding.Magnetic tongue free end 28b is protruding from magnet shell 22.Between magnetic tongue 28 and magnet 26, leave 0.003 " the gap.
First housing parts 18 also is roughly a D type cup, has openend 18a and blind end 18b.This housing parts openend 18a is near the magnet shell 22 on second housing parts, 17 opposites, so magnetic tongue free end 28b stretches in first housing parts 18.First housing parts 18 also projection welding to or be laser-welded on the magnet shell 22 by other mode.Being provided with a support cup 34 (analysing and observe shown in the part) in the housing parts 18, provide periphery flange 36 around each wall of the wall 34a of sounding housing parts 18 as the part of Fig. 2.The total length of audiphone 10 is 0.244 ".Overall width at the pedestal place of audiphone 10 is 0.18 ".
A roughly foursquare sheet 40 that shakes is provided, and the sheet 40 that shakes comprises a roughly blade 42 of the aluminium of rigidity, and blade 42 is fixed on the conventional sheet film 43 that shakes.In the sheet that shakes of some routine, film is protruding from all four limits of blade, flexibly connects so that realize in the audiphone shell.According to the such sheet that shakes of some prior aries, the sheet that shakes is done the time spent effectively around the stiff end 28a of magnetic tongue 28 pivoted being subjected to its corresponding magnetic tongue.But in the present embodiment, as the sheet that shakes with some other routine, film 43 stretches out outside three side direction of blade 42, has formed the circumferential annular thing 44 of a flexibility around this three side.Annulation 44 terminates in three periphery edge 40a places.Annulation 44 around three periphery edge 40a is fixed on the corresponding flange 36 of cup 34, flexibly connects thereby between them, formed.In other words, blade 42 separates by ring 44 and cup 34 along these three edges, shown in Fig. 2 a.The 4th edge 40b of sheet 40 of shaking does not have ring.On the contrary, blade 42 reaches the internal edge of cup 34, shown in Fig. 2 b.Film 43 has been crossed the edge of blade 42, so that be fixed on the corresponding flange 36.In other words, blade 42 does not separate by ring 44 and cup 34 along the 4th edge 40b.Therefore, the 4th edge 40b is fixed on the cup 34 rigidly, rather than is fixed to flexibly on the cup 34.
The sheet 40 that shakes is provided with across first housing parts 18, by periphery flange 36 supports of cup 34.The sheet 40 that shakes has been determined first and second sound chambers 48,50.Second sound chamber 50 comprises all air spaces in the former moving device 16 of electromagnetic type.Shake three sides of peripheral annular thing 44 of sheet 40 of formation are 0.0005 by thickness " film (as, urine gastral cavity) be fixed to flange 36 flexibly.Shake sheet 40 the 4th edge 40b because and the effect of its blade 42 that spatially extends together be rigidity basically, and along the edge all the other side transfixions of 36.For the 4th edge 40b of the sheet 40 that guarantees to shake keeps motionless along all the other sides of flange 36,, can apply one or two epoxy resin 51 so that can remove any possible resonance of not expecting.It should be noted that this pivoted of the sheet 40 that shakes connects the amplitude that has reduced audiphone output, its reason is: compare with the conventional flexible couplings mode of the sheet that shakes, it is less that the per unit of magnetic tongue moves the air that the pivotally supported sheet that shakes is moved.But this amplitude reduces to be considered to the half measure for the necessity that obtains the desired frequency response.
In the prior art audiphone with the pivotable sheet that shakes, the distance that shake sheet and magnetic tongue separate is about 0.060 ", and they are coupled by drive rod operably.Drive rod can be slight curving, so that meet the action of the sheet that shakes that a different arc along the magnetic tongue that removes in mobile moves.But in audiphone 10 of the present invention, magnetic tongue 28 has only about 0.002 " 0.003 " with the distance that the sheet 40 that shakes separates, and the space of enough big assembling drive rod is not provided.In addition, the diameter/length of Duan drive rod is bigger than too like this, therefore can not be fully crooked.Therefore, in the present invention, by a kind of compound of flexibility, for example sclerometer hardness is the RTV of A22 or littler flexibility, and the free end 28b of magnetic tongue is coupled on the sheet 40 that shakes flexibly.The mobile basis of sheet 40 by magnetic tongue 28 of shaking is added to the frequency of the signal of telecommunication of former moving device 16 around rigid edge 40b pivoted.Sheet 40 is around rigid edge 40b pivoted because shake, thus reduced the effective mass of sheet 40 of shaking that magnetic tongue 28 bears, thereby improved the frequency of former moving device formant.
On the blade 42 of the sheet 40 that shakes and film 43, all be provided with a positioning convex 54, assemble audiphone 10 to the RTV of magnetic tongue 28 so that help to place the bonding sheet 40 that shakes by the location.
First and second outlets 56,58 are extended by housing parts 18.First outlet, 56 acoustical couplings export 58 acoustical couplings to second Room 50 to first Room 18, the second.First and second go out 56,58 18b of blind end basically by housing parts 18 extends.The diameter that a circular is set in first sound chamber 18 is 0.018 " pipe 60.The length of pipe 60 is preferably 0.1 ", the length and/or the radius that certainly change pipe 60 are regulated two peaks frequency frequently.Specifically, add the radius of bassoon 60, perhaps reduce to manage 60 length, can both improve each peak frequency frequently.
The structure of above-mentioned audiphone 10 itself can cause the quite linear combination of simplification, and in fact audiphone 10 wherein comprises three subassemblies.
First subassembly comprises the magnetic tongue 28 on the interior rear wall that is fixed to second housing parts 17.In general, the magnetic tongue of prior art audiphone is the part of former moving device, is not to be directly connected on the shell separately.Institute for magnetic tongue 28 adds support, and the thickness of the blind end 17b of second housing parts 17 is 0.006 ", and the thickness of side is 0.005 ".First subassembly further comprises a thin slice 64, as electricity end knot.
Second subassembly comprises magnet iron-clad 22, magnet 26 and coil 20.Magnet 26 is bonded in the magnet shell 32 with being spaced from each other, and coil 20 also is bonded on the magnet shell 22.Second subassembly is unique, has wherein in fact constituted the part of audiphone shell as the magnet shell 22 that returns magnetic flux path.Design is although it is so being made sacrifice aspect the magnetic flux Vent leakage, but this design has significantly reduced the overall dimension of audiphone 10.
The 3rd subassembly comprises and is fixed to cup 34 openend and is arranged on the sheet 40 that shakes in first housing parts 18.The 3rd subassembly further comprises the pipe 60 that a little is welded in first housing parts 18.Like this, just may assemble audiphone 10 by linear mode, the coil 20 that promptly passes second parts inserts the magnetic tongue free end 28b of first subassembly, and second housing parts 17 is laser-welded on the magnet shell 22.The magnetic tongue free end is protruding from the opposite end of magnet shell 22 then.On the positioning convex 54 of blade 42, place the RTV of a liquid form that had not solidified, first housing parts 18 is connected and together with magnet shell 22 their laser welding.Magnetic tongue free end 28b contacts with liquid RTV with the sealing attached form, and RTV is solidified, thereby finishes assembling.
Referring now to Fig. 6,, wherein expresses the audiphone 10 that is positioned in the hearing aids 11.This hearing aids comprises housing 66, go out 68, harmony mouth 70.Go out the 68 low frequency sounds that allow by the band connection frequency that is lower than the logical audiphone 10 of band.The sound mouthful 70 duct (not shown) that allow from the sound feeding user of audiphone 10.
According to a second aspect of the present invention, in Fig. 7 and 8, express an audiphone 10 ', its frequency response is as shown in Figure 9.The general structure that audiphone 10 ' have and the previous audiphone of introducing 10 are identical has only following difference.
Main difference is to have cancelled pipe 60 and corresponding first outlet 56.Another difference is cancelled the blade 42 of the sheet 40 that shakes and the rigidity between cup 34 the 4th limit 40b pivotable fixing.On the contrary, ring 44 extends around all four edges of the sheet 40 that shakes, so that be flexibly connected on four all flanges 36 of cup 34.As discussed above, the cup that sheet 40 pivotallies that shake are connected to described first audiphone 10 is in order to reduce the effective mass of magnetic tongue, to improve the resonance frequency of audiphone 10 on 34.But because the raising of resonance frequency for described second audiphone 10 ' be not to be necessary, therefore used the flexible connection mode between comparatively traditional shake sheet and the cup, so that obtain the amplitude peak that audiphone is exported.
It is also contemplated that out second sound device 10 ' other improve, as described below.
Figure 10 disclose to audiphone 10 ' a kind of improvement, wherein a net 100 is set on 58 in outlet.The effect of net 100 is peaks of level and smooth (or damping) frequency resonance response, as shown in figure 11.
Figure 12 disclose to audiphone 10 ' another kind improve, wherein in second housing parts 17, be provided with one after accent 104.Back accent 104 can make second sound chamber, 50 (see figure 1)s ventilate.Because the effect of ventilating, make in second sound chamber 50 air not by compression, consequently can obtain bigger output amplitude value and can reduce resonance frequency.Can use back cavity net 106 to reduce the effective vent size of back cavity, therefore can change output amplitude and resonance frequency.Adjustable graticule mesh (mesh screen) is set can make the user control output amplitude and resonance frequency by adjustable mode.Figure 13 disclose audiphone 10 ' a frequency response curve, this audiphone 10 ' have back accent 104 of 0.020 " * 0.080 ", mouthfuls 104 are covered by back cavity net 106, the mesh of net 106 has 33% light transmission.By use mouthful net 100 and back cavity net 106, and by changing the relative reticular density of mouthful net 100 and back cavity net 106, just can change the acutance of formant, the while can also change output amplitude and resonance frequency.
In another embodiment, two audiphones 10 ' lean against are privately put together, in fact formed two audiphones 10 " that the cross section is substantially oblong-shaped.The output amplitude of two audiphone 10 " be the single audiphone 10 before discussed ' the twice of output amplitude, and reduced mechanical oscillation, this is because the phase difference of the magnetic tongue 28 of two correspondences of each single audiphone is 180 ° a cause.Therefore, the barycenter of two audiphone 10 " is maintained fixed constant.This reducing of mechanical oscillation is of great importance, because the audiphone (not shown) of hearing aids may receive this vibration, causes feedback.
Last aspect of the present invention relates to each embodiment of protective cover, and protective cover is placed on the openend of audiphone, prevents that earwax from entering the opening of audiphone.
First protective cover 110 is shown among Figure 16 a, is that thickness is about 0.001 " the urine gastral cavity molding and have enough big elasticity, can suitably be stuck on the openend of audiphone.The degree of depth of first protective cover 110 " d " is about 0.050 " 0.070 ", enough will cover 110 according to this degree of depth and remain on the audiphone.Just can clear away simply from user's duct with user's finger or other utensil and to be collected in any earwax on the cover 110.
Second protective cover 114 is shown in Figure 16 b and 16c.Second protective cover 114 comprises flexible cup 118 and urine gastral cavity film 120.Cup 118 preferably bonding is fixed on the audiphone.
The 3rd protective cover 126 and second protective cover, 114 broadly similars just comprise a net 128, and net 128 separates with urine gastral cavity film 120 by filling up 130.Discussed as previous, the net on can use sound mouth changes each frequency response.But because of the sound mouth will insert user's duct, the very fast usually mesh that stopped up of earwax has a negative impact to the sound quality of audiphone.126 pairs of nets 128 of the 3rd protective cover provide the earwax protection, can sweep clean earwax at an easy rate.
Show, under the condition that does not depart from design of the present invention or principal character, can also implement the present invention by other special shape.Therefore above-mentioned example and embodiment all are considered to illustrative in all respects, rather than restrictive, and the present invention is not limited to details given here.

Claims (32)

1. a miniature band that is used for hearing aids leads to audiphone, comprising:
A housing parts;
The sheet that shakes with a plurality of periphery edges, this sheet that shakes is located in the housing parts and has determined first and second sound chambers;
Be coupled to the device of shell by will shake one of them edge of sheet periphery of pivotable mode;
The former moving device of electromagnetic type;
A kind of former moving device is coupled to the flexibility compound of the sheet that shakes, thus can be with the sheet that shakes according to the frequency action of the signal of telecommunication that is added to motor; And
Pass first and second outlets of housing parts, the first outlet acoustical coupling is to first Room, and the second outlet acoustical coupling is to second Room.
2. audiphone as claimed in claim 1, flexibility compound wherein comprises RTV.
3. audiphone as claimed in claim 2, wherein the sclerometer hardness of RTV is A22 or littler.
4. audiphone as claimed in claim 1, wherein comprise the film edge of a rigidity by will shake device that one of them edge of sheet periphery is coupled to shell of pivotable mode.
5. audiphone as claimed in claim 1, it comprises a pipe, this pipe is located in first sound chamber and said first opening is arrived in acoustical coupling.
6. audiphone as claimed in claim 5, first sound chamber wherein has a length, and this pipe extends along the length of first sound chamber basically.
7. audiphone as claimed in claim 5 stops when wherein this Guan Zaiyu first opening is substantially flush.
8. audiphone as claimed in claim 1, the cross section of housing parts wherein are D shape.
9. audiphone as claimed in claim 1 also comprises a periphery flange that is located in second Room, and the sheet that shakes wherein is coupled to this periphery flange.
10. audiphone as claimed in claim 9, flange wherein are by being located at cup-shaped one-tenth in second sound chamber.
11. a hearing aids comprises a main shell that is suitable for inserting in the hearing aids user ear, is combined into audiphone as claimed in claim 1 in main shell.
12. the logical audiphone of miniature band that is used for hearing aids, this audiphone comprises:
A housing parts;
The sheet that shakes with a plurality of periphery edges, this sheet that shakes is located in the housing parts and has determined first and second sound chambers;
The former moving device of electromagnetic type, it comprises that one has stiff end and free-ended magnetic tongue;
Be coupled to the device of shell by pivotable mode one of the sheet periphery edge that will shake;
The device that comprises the flexibility compound is used for the magnetic tongue free end is coupled to the sheet that shakes, so that can promote to shake sheet according to the frequency of the signal of telecommunication that is added to motor; And
Pass first and second outlets of housing parts, the first outlet acoustical coupling is to first Room, and the second outlet acoustical coupling is to second Room.
13. as the audiphone of claim 12, flexibility compound wherein comprises flexible RTV.
14. the logical audiphone of miniature band that is used for hearing aids, this audiphone comprises:
A former moving device shell;
The former moving device of electromagnetic type, it has a coil, a magnet shell and a magnetic tongue, magnetic tongue has a stiff end and a free end, wherein coil is located in the former moving device shell, the magnetic tongue stiff end is fixed firmly to former moving device shell, the magnet shell is opened end basically near former moving device shell, and the magnetic tongue free end stretches out from the magnet shell.
A housing parts, it has opens end and blind end basically, and opening of housing parts held near the magnet shell, makes the magnetic tongue free end can stretch into housing parts;
The sheet that shakes with a plurality of periphery edges, this sheet that shakes is located in the housing parts and has determined first and second sound chambers;
Be coupled to the device of the blind end basically of housing parts by pivotable mode one of the sheet periphery edge that will shake;
A kind of flexibility compound is used for the magnetic tongue free end is coupled to the sheet that shakes flexibly, so that can be according to the frequency action of the signal of telecommunication that the is added to motor sheet that shakes; And
Pass first and second outlets of housing parts, the first outlet acoustical coupling is to first Room, and the second outlet acoustical coupling is to second Room.
15. as the audiphone of claim 14, first and second outlets are wherein extended by the blind end basically of housing parts.
16. as the audiphone of claim 14, flexible adhesion device wherein comprises flexible RTV.
17. the logical audiphone of miniature band that is used for hearing aids comprises:
A housing parts;
The sheet that shakes with a plurality of periphery edges, this sheet that shakes is located in the housing parts and has determined first and second sound chambers;
Be coupled to the device of shell by pivotable mode one of the sheet periphery edge that will shake;
The former moving device of electromagnetic type;
A kind of flexibility compound is used for motor is coupled to the sheet that shakes, so that can be according to the frequency vibration that is added to the signal of telecommunication of the motor sheet that shakes; And
An outlet, this outlet extend by housing parts and acoustical coupling to second Room.
18. as the audiphone of claim 17, flexibility compound wherein comprises flexible RTV.
19. as the audiphone of claim 18, the hardness of RTV wherein on sclerometer is A22 or littler.
20., wherein comprise a pivotable film edge by the pivotable mode device that one of sheet periphery edge is coupled to shell that will shake as the audiphone of claim 17.
21. as the audiphone of claim 17, wherein the cross section of housing parts roughly is D shape.
22. as the audiphone of claim 17, comprise a periphery flange that is located in second Room, the sheet that shakes wherein is coupled on this periphery flange.
23. as the audiphone of claim 22, flange wherein is by being located at a cup-shaped one-tenth in second sound chamber.
24. an assembling is used for the method for the audiphone of hearing aids, this method comprises the steps:
First subassembly is provided, and first subassembly comprises the first cup-shaped housing parts with interior rear wall and has a stiff end and a free-ended former moving device magnetic tongue, stiff end be fixed to said on the rear wall, free end is from stretching out here;
Second subassembly is provided, and said second parts comprise a magnet shell, an a pair of spaced apart from each other and coil being located at the magnet in the magnet shell and being fixed to said magnet shell and extending therefrom;
The 3rd subassembly is provided, and the 3rd subassembly comprises one second housing parts, has a sheet that shakes that is located at a cup of said openend in second housing parts and crosses the openend extension of said cup;
Said first subassembly is fixed on said second subassembly, said magnetic tongue free end is extended between said two magnet that are separated from each other of said second subassembly; And
Said second subassembly is fixed on said the 3rd subassembly, makes said magnetic tongue free end be connected the said sheet and being fixed on the said sheet that shakes of shaking.
25. an audiphone shell that is used for hearing aids, this audiphone shell comprises:
First housing parts;
A magnet shell; And
Second housing parts, wherein said first housing parts, said magnet shell and said second housing parts are connected with each other.
26. an audiphone that is used for hearing aids, this audiphone comprises:
A magnet shell;
In said magnet shell, be spaced from each other first and second magnet of setting;
A roughly cup-shaped housing parts, this housing parts have a blind end, and this blind end has been determined an interior rear wall;
A magnetic tongue, this magnetic tongue have a stiff end that is fixed to said housing parts and a free end that extends between the said magnet that separates.
27. as the audiphone of claim 26, wherein said magnetic tongue is fixed on the said interior rear wall of said housing parts.
28. the oval-shaped audiphone of cardinal principle that is used for hearing aids, this audiphone comprises the audiphone of a pair of cardinal principle D type of combining back-to-back.
29. as the oval audiphone of claim 28, comprising the device of the resonance frequency that is used to change said audiphone.
30. as the oval audiphone of claim 29, wherein:
Each said D shape audiphone all has a back cavity; And
Said modifier comprises the device of the extraneous ventilation state that changes said back cavity.
31. as the oval audiphone of claim 30, wherein said extraneous ventilation modifier comprises a net.
32., have a sound mouth as the audiphone of claim 26 or 30; And comprise a clogged with ear wax protective cover, be used to prevent that earwax from entering opening.
CN94193249A 1993-09-01 1994-08-31 Receiver for hearing aid Pending CN1130459A (en)

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US11489893A 1993-09-01 1993-09-01
US08/114,898 1993-09-01

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CN (1) CN1130459A (en)
AU (1) AU7794694A (en)
WO (1) WO1995007014A1 (en)

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EP0716800A1 (en) 1996-06-19
WO1995007014A1 (en) 1995-03-09
JPH09502315A (en) 1997-03-04
AU7794694A (en) 1995-03-22

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