CN1164144C - Inertial vibrative transducer - Google Patents

Inertial vibrative transducer Download PDF

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Publication number
CN1164144C
CN1164144C CNB961966270A CN96196627A CN1164144C CN 1164144 C CN1164144 C CN 1164144C CN B961966270 A CNB961966270 A CN B961966270A CN 96196627 A CN96196627 A CN 96196627A CN 1164144 C CN1164144 C CN 1164144C
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CN
China
Prior art keywords
described
assembly
transducer
motor coil
characterized
Prior art date
Application number
CNB961966270A
Other languages
Chinese (zh)
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CN1194766A (en
Inventor
亨利・阿兹玛
亨利·阿兹玛
科洛姆斯
马丁·科洛姆斯
哈里斯
尼尔·哈里斯
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新型转换器有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
Priority to GB9517918.0 priority Critical
Priority to GBGB9517918.0A priority patent/GB9517918D0/en
Priority to GB9522281.6 priority
Priority to GBGB9522281.6A priority patent/GB9522281D0/en
Priority to GB9606836.6 priority
Priority to GBGB9606836.6A priority patent/GB9606836D0/en
Application filed by 新型转换器有限公司 filed Critical 新型转换器有限公司
Priority to PCT/GB1996/002167 priority patent/WO1997009859A1/en
Publication of CN1194766A publication Critical patent/CN1194766A/en
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34865253&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CN1164144(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
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Publication of CN1164144C publication Critical patent/CN1164144C/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00Diaphragms for electromechanical transducers; Cones
    • H04R7/02Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04Plane diaphragms
    • H04R7/045Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00Transducers of moving-armature or moving-core type
    • H04R11/02Loudspeakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00Diaphragms for electromechanical transducers; Cones
    • H04R7/02Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04Plane diaphragms
    • H04R7/06Plane diaphragms comprising a plurality of sections or layers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/029Diaphragms comprising fibres
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10General applications
    • H04R2499/13Acoustic transducers and sound field adaptation in vehicles

Abstract

An inertial vibration transducer (9) characterised by a motor coil assembly comprising a tubular member (18) and a coil (13) rigidly fixed to the tubular member, and by a magnet assembly (15) disposed concentrically within the motor coil, and resilient means (19) supporting the magnet assembly for axial movement relative to the motor coil, the motor coil and tubular member being adapted to be rigidly mounted to a distributed mode radiator (2).

Description

Inertial vibrative transducer

Technical field

The present invention relates to transducer, relate in particular to the vibrative transducer of the loud speaker that comprises the panel type sound radiant element.

Technical background

Knownly proposed a kind of panel type loud speaker in GB-A-2262861, this loud speaker comprises:

Resonance multi-mode radiator element, it is the integrated sandwich plate that a kind of two skin-materials that separated by the fuse that has horizontal honeycomb form, and wherein the bending rigidity (B) of this panel on all orientation is at least 10 with the ratio of cube power of per unit surface area (μ) top panel quality;

Fixture, it supports this panel or it is pasted a supporter in free undamped mode; With

With the dynamo-electric gear that this panel couples, be used in response to the multi-mode resonance that comes the electricity input of the working band of loud speaker in the excitation radiation device panel.

The US-A-4 of MULTIPHONIE, 506,117 disclose a kind of electroacoustic transducer, and it comprises a mass, and it securely pastes panel so that panel vibration by its substrate.

Disclosure of the Invention

The feature of the assembly that is adopted in the various embodiments of the present invention, structure and configuration can be usually and/or are that content in the PCT patent application document of WO97/09842 obtains by implementing with the publication number that the present invention proposes on the same day especially.So these assemblies: have the ability that keeps and propagate the inputted vibration energy by the deflection wave in the effective coverage, the extending transversely of this working region thickness can arrive the periphery of each assembly, but this not necessarily; Be configured to have or do not have the anisotropy of bending rigidity,, carry out acoustical coupling thereby be of value to surrounding air so that the resonant mode vibrating elements is distributed in described zone; With in described zone, have predetermined optimum position or the place that is used for transducer apparatus (especially it can operate active or movable part), acoustic vibration activity in this transducer apparatus and the described zone and closely related corresponding to the sound composition signal of this vibration activity, this signal is generally the signal of telecommunication.Open in as the international patent application file of WO97/09842 to using of these assemblies at the publication number that proposes on the same day with the present invention, these assemblies: or for example be used for reverberation or be used for filtering or be used for " passive " acoustic equipment of the no transducer apparatus of acoustics " sounding (Voicing) " in a space or place, or in having " active " acoustic equipment of transducer apparatus, for example in the quite wide scope when sound source or loud speaker are provided with the input signal that is converted into described sound, perhaps be exposed to when being converted into the sound of other signal at for example microphone.

The invention particularly relates to the active acoustic equipment of loud speaker form.

Here, aforesaid each assembly is called the distributed acoustic radiator, and will be in above-mentioned PCT patent application and/or other its feature that provides in the explanation that this provides especially.

The present invention is a kind of inertial vibrative transducer, be used for Drive assembly, this assembly can keep and propagate the inputted vibration energy by the deflection wave in the operating area of at least one its thickness of extending transversely, to have the mode of resonance oscillating component that on described at least one zone, distributes and in described zone, to have predetermined optimum position and the place that is used for transducer apparatus, and has a transducer on the described assembly that is installed in one of described position or place, make its resonance to vibrate this assembly, thereby when resonance, form the acoustic radiator that sound output is provided, this inertial oscillation transducer comprises: have the motor coil assembly of a coil, this coil is fastened on the tubular assembly; With the coaxial mounted magnet assemblies of this motor coil assembly; With the supporting this magnet assemblies so that it can make the elastic device of axial motion with respect to this motor coil assembly, wherein this tubular assembly directly is fastened on this assembly so that its vibration by adhering device.This elastic device can comprise the elastic parts relative to each other of the opposite side that is arranged on this magnet assemblies.The lid of the axle head of sealing tubular assembly can be set, and this elastic device can be installed on this lid.This lid can comprise this elastic device.Each lid can comprise the flexible web-like wrapping portion of a ring-type.Magnetic shielding cover can be set on lid.This coil can be installed in the inner surface of this tubular assembly.This electric machine assembly can be in this radiator be laid in the cavity of respective shapes.This motor coil assembly can be fastened on the surface of radiator.This magnet assemblies can comprise the pole element of relative common plate-like, the periphery of one of them pole element is positioned among this motor coil assembly and contiguous this motor coil assembly, the periphery of another pole element then is formed with flange, and this flange is adjacent with this motor coil assembly lays and surround this motor coil assembly.This elastic parts can be folded up between a surface of one of each pole element and this radiator.This magnet assemblies can comprise the relative magnet of a pair of homopolarity that wherein accompanies a pole element.Complementary magnet assemblies and motor coil assembly can be set on this radiator apparent surface, and can be provided with this magnet assemblies is fixed tightly in together to recommend the device of operation.

From another point of view, the present invention is a kind of loud speaker, and it comprises aforesaid inertia transducer.

The accompanying drawing summary

Illustrate the present invention with exemplary forms in the accompanying drawing, in the accompanying drawing:

Fig. 1 is described and be the schematic diagram of disclosed distributed mode speaker in the international patent application file of WO97/09842 at our publication number that proposes on the same day with the present invention above the expression;

Fig. 2 a is along the fragmentary cross-sectional view of A-A line among Fig. 1;

Fig. 2 b is the amplification profile of the sort of distributed radiator shown in Fig. 2 a, and expresses two replaceable structures;

Fig. 3 is the cross sectional side view of first embodiment of transducer;

Fig. 4 is the cross sectional side view of second embodiment of transducer;

Fig. 5 a is the cross sectional side view of the 3rd embodiment of transducer;

Fig. 5 b is the cross sectional side view of the 4th embodiment of transducer;

Fig. 5 c is the cross sectional side view of the 5th embodiment of transducer; With

Fig. 6 is the cross sectional side view of the 6th embodiment of transducer.

Realize optimal mode of the present invention

With reference to the Fig. 1 in the accompanying drawing, this publication number of filing an application on the same day with the present invention that illustrates at us is the sort of panel type loud speaker 81 of describing and limiting in the international patent application file of WO97/09842, this loud speaker comprises rectangular frame 1, and this framework has the resilient suspension part of a support distribution formula acoustic radiation panel 2 around its inner rim.Be that the transducer described in detail in the international patent application file of WO97/09859, WO97/09861, WO97/09858 9 is whole and be installed in independently on the position that is limited by dimension x and y on the panel 2 or in the position for example with reference to our publication number of filing an application on the same day with the present invention, the calculating of this position is to calculate as described in the international patent application file of WO97/09842 as the publication number of filing an application on the same day with the present invention at us, so that deflection wave is transmitted in this panel, thus so that this panel resonance radiation sound output.

Transducer 9 by signal amplifier 10 for example audio frequency amplifier drive, this amplifier links to each other with this transducer with lead 28.Be similar to conventional cone loudspeaker, required amplifier load and power are very general, when the order of magnitude that is in its sensitivity under the indoor mounting condition at the 86-88dB/ watt.The load impedance of amplifier is roughly 6 ohm, uses power to be the 20-80 watt.Wherein make with metal on this panel fuse and/or top layer, can be used as the radiator of this transducer, to eliminate the heat from the motor coil of this transducer, uses power thereby improve.

Fig. 2 a and 2b are the part representative section figure of loud speaker 81 among Fig. 1.Fig. 2 a representational framework 1, wrapping portion 3 and panel 2 are linked together by corresponding bonded assembly 20.The material that is applicable to this framework comprises the lightweight frame, for example such as the pressed metal of aluminium alloy or the picture frame of plastics.The wrapping portion material that is suitable for comprises the elastomeric material such as foam rubber or foamed plastics.The adhesives that is applicable to assembly 20 comprises adhesives such as epoxy resin, acrylic acid and itrile group acrylate.

It is a kind of hard lightweight panels that Fig. 2 b illustrates panel 2 enlargedly, this panel has the fuse such as rigid plastics foam 97 (for example crosslinked polyvinyl chloride), perhaps honeycomb substrate 98, it is the honeycomb matrix of metal forming, plastics or analog, its each unit transverse is stretched on the face of this panel, and for example paper, card, plastics or metal forming or sheet seal by opposed top layer 21.Although this top layer adopts plastics to make, for example also can adopt carbon, glass, Kevlar (aromatic polyamide fibre) (RTM) etc. fiber strengthen self with a kind of well-known way, thereby strengthen their modulus.

Therefore, contemplated skin-material and reinforce comprise: carbon, glass, Kevlar (aromatic polyamide fibre) are (RTM), Nomex (Nomex) is the fiber of aramid various levels such as (aromatic amines) and layout (RTM); And paper, bonding ply of paper, fuse, melamine and various high mode synthetic plastic film, for example Mylar (polyethylene terephthalate thin film) (RTM), Kaptan (polyimide film) (RTM), polycarbonate, phenolic aldehyde, polyester or relevant plastics and fibre reinforced plastics etc.; And sheet metal or paper tinsel.To the vectra grade (Vectra grade) of liquid crystal polymer thermoplastics studies show that they help the skin to ultra-thin top layer or smaller szie, such as diameter reaches about 30 centimetres injection molding.This forms the directional crystal structure this material on injection direction, this direction is that high-frequency energy is from the preferred orientations of drive point to the good propagation of panel periphery.

In addition, allow stamper tool to have location and aligning parts such as groove or annulus to the pressing mold of this and other thermoplastics, for example motor coil and magnetcisuspension are hung part and are accurately located to transducer portion to be used for.In addition, adopt some more weak core material, it is useful having calculated the local thickness that increases the top layer (for example greatly to 150% zone or annulus of transducer diameter), to strengthen this zone and effectively vibrational energy to be coupled to this panel.In this way, adopt softer foamed material will improve high frequency response.

Contemplated core material comprises honeycomb and the groove line that assembles, these honeycombs and groove line be aluminum alloy sheet or paper tinsel, Kevlar (aromatic polyamide fibre) (RTM), Nomex (Nomex) (RTM), level and smooth or adhesion paper, various synthetic plastic film and porous or foamed plastics or paper pulp material, even for having suitable low-density aeroge metal.Some core materials that are suitable for show practical self top layer (self-skinning) effectively in its manufacture process, and/or have when not adopting interlayer in addition between two top layers enough interior in rigidity.Known have a kind of high performance cellular fuse material to be celebrated with its trade name " Rohacell ", and this material is suitable for use as emitter panel, and does not have the top layer.In practice, its purpose is to solve overall lightness and rigidity problem at specific objective, best distribution between especially comprising from the fuse to the top layer and the transition between them.

Several preferred composition of panel adopts the metal or metal alloy top layer, or adopts a kind of carbon fiber reinforce in addition.Form and adopt the design of alloy aeroge or honeycomb metal fuse for these two kinds and will have suitable radio frequency sifting property, this is very important in several EMC (electronic measurements control) use.Traditional panel or cone loudspeaker do not have inherent EMC screening capacity.

In addition, the dynamic transducer of the piezoelectricity of preferred type has negligible electromagnetic radiation or stray field.Unless adopt special compensation to offset measure, traditional loud speaker has high big magnetic field to 1 meter distance.

In application, keep screening under the situation that seems important, the conduction portion of suitable DML panel can be electrically connected, perhaps that conductive foam or similar interface is fixing as periphery.

The periphery of suspended portion 3 damping panels 2 excessively moves to periphery to prevent this panel.In addition or replacedly, can adopt further damping, for example adhere to selected location on this panel as patch (patch), suppressing excessive amount of motion, thereby on this panel distributed resonance equably.These patches adopt as the common used asphalt-based material of conventional loudspeakers shell is made, or can be made by elasticity or rigid polymer sheet material.Some material is mainly paper or card and some fuses can have the self-damping ability.Under situation about being necessary, increase damping in the panel construction by adopting elasticity bonding agent setting rather than the rigidity setting.

Effectively describedly select damping to comprise special applications to this panel, this panel contains the flaky material device that forever is connected with it.For the main of panel and disperse for the less low frequency modes, periphery and corner may be particular importances.Although their corner can be relatively freely usually, the periphery of damping device is fixing can to make panel flaky material described with it suitable fully valuably, such as wishes to expand to more low frequency operation.Can adopt bonding or adhere from bonding material.Other form of effective damping, particularly for more accurate effect and/or in and high frequency, can by described zone predetermined effectively in the middle of on the local positions mode of affixed suitable material or multiple material carry out.

Above-mentioned sound panel is a reversible.Is not that phase place is relevant very doughtily from the acoustic energy at rear portion with acoustic energy from the front portion.Therefore, this even frequency distribution to the accumulation of the integral body of acoustical power in the room, acoustic energy, the reflection and the standing wave effect that have weakened are highly profitable, and there is great advantage place and the extraneous reproduction aspect in the sound disc that reproduces.

The radiation of panel great majority are for direction-free although speak, and the percentage of phase place relevant information increases with off-axis (offaxis).With regard to the improvement of artificial stereo image, be positioned at the people's of normal stand the position of loud speaker of height, the same with image, favourable to suitable off-axis position, be positioned at appropriate locational audience and can obtain the optimum stereo effect thereby make.Equally, a triangle left side/right geometric figure with respect to the audience provides further angle component.Thereby can obtain good stereo.

Compare with traditional loudspeaker reproduction, a group audience is also had further benefit.The intrinsic dispersing characteristic of sound panel acoustic radiation makes its volume disobey inverse square law to distance equivalent point sound source distance.Since with the sound intensity of distance landing far below intensity by the prediction of inverse square law, therefore, compare with traditional loud speaker, for not being positioned at the center and being in for the incorrect locational audience, the intensity field of panel loudspeaker provides stereophonic effect more true to nature.This is because the audience at off-center place no longer runs into the more close dual problem that the audience ran into: at first being the undue enhancing of the volume sent near loud speaker, secondly is the corresponding reduction of the volume sent from loud speaker far away.

For smooth, lightweight panels type loud speaker, it is also advantageous in that its beautiful appearance, have good sound quality, only need a transducer and whole range of sounds of sending from each panel vibration film in do not have cross over point.

Fig. 3 represents an embodiment of moving coil transducer 9, it is embedded in the inside of a distributed panel 2 of firm lightweight fully, the distributed panel 2 of this lightweight comprises a fuse 22 towards two sides with top layer 21, so that bending wave is reflexed in the panel.

Transducer comprises coil 13, it is embedded in the fixture 16 in the cavity 29 in the fuse 22 of panel 2, and this fixture 16 is epoxy resin materials for example, and around cylindrical coil frame 18, so coil 13 is fastened in the panel 2 with bobbin 18.

One magnet assemblies is installed in the segment space of the cavity 29 that is limited by bobbin 18, magnet assemblies comprises the relative magnet of a pair of homopolarity 15, separate by a utmost point shape assembly 14 between the magnet 15, by means of relative rubber type of material for example the flexible suspension assembly 19 of foam rubber magnet assemblies is installed on the inner surface on two top layers 21 of panel 2, flexible suspension assembly 19 is on the inner surface on viscose glue each top layer 21 of being fastened on magnet assemblies and panel.Therefore, magnet assemblies 14,15 and coil 13 coaxial installations, and can on suspension assembly 19, do axial motion.

Because the axial relative motion between magnet assemblies and the coil.Transducer 9 is operated so that bending wave is transmitted in the panel by vibration, thereby causes local elasticity's distortion of panel.Strengthened the driving effect by the quality that increases magnet assemblies.

In when operation, at least when high frequency, because that the quality of magnet assemblies is compared with the quality of panel is relatively large, therefore, the inertia of magnet assemblies makes magnet assemblies keep stable, and it vibrates relatively and make panel.

Fig. 4 represents the embodiment of moving coil transducer 9, and it is similar to embodiment shown in Figure 3, and it is embedded in an inside that has in the face of the distributed emitter panel 2 of firm lightweight of the fuse 22 on top layer 21 fully, so that bending wave is transmitted in the panel.Transducer 9 is formed a modular assembly with in the panel 2 that it is packed into.As shown in the figure, be formed with a cavity that adapts 120 in the panel 2, in order to hold transducer 9.

Transducer comprises a coil 13, for example coil 13 is fixed on the inwall of cyl indrical former 18 by means of firm bonding canister (potting) 20, bobbin 18 is as the housing of transducer, seal up with lightweight end cap 119 its axial opposite end, end cap 119 can for example be fixed on the bobbin with bonding agent 220 firmly with the form that needs arbitrarily.Adopt the motion of direction shown in arrow among the figure ' A ', in the transducer cavity 120 of this component placement in distributed panel 2.By means of bonding agent, transducer is fixed in the cavity.

Magnet assemblies is placed in the cavity 29 that is limited by bobbin 18, it comprises the relative magnet of a pair of homopolarity 15, the centre separates with a utmost point shape assembly 14, magnet assemblies is installed on the end cap 119 of bobbin 18 by a relative rubber type of material such as the flexible suspension assembly 119 of foam rubber, flexible suspension assembly 119 is fixed together by bonding inner surface suspension assembly and magnet assemblies and each end cap.

So magnet assemblies 14,15 just with coil 13 coaxial installations, and on its suspended portion 19, do axial motion.Identical with the aforesaid way of the embodiment of reference Fig. 3, cause the distortion of panel local elasticity with vibration, transducer 9 operations are to be transmitted into bending wave in the panel 2.

The arrangement 9 of the transducer of Fig. 5 a comprises complementary push-pull drivers, it is arranged on the opposite side of panel 2, bending wave is transmitted in the distributed radiator 2 of firm lightweight, this radiator comprises the fuse 22 that is encased by relative top layer 21, to cause panel resonance.

In the present embodiment, coil 13 is by means of the outside that for example is fastened on bobbin 18 with bonding agent, and to form the motor coil assembly, this motor coil assembly is fastened in the relative top layer 21 of emitter panel 2 with the method for adhering with epoxy resin Ji 16.Magnet 15 is encased by a pair of magnetic pole 14, and one of them is a plate-like, and its periphery is set to the inner edge near each bobbin 18, and another then has the periphery flange 162 around coil 13.

Fixation kit 93 has the column profile usually, and it is arranged to very freely by aperture 29 in the panel 2.Fixation kit 93 comprises relative parts complimentary to one another, and each parts all is formed with head 95, and this head is each axle head chucking to transducer 9, so that driver links together.The complementary part of fixation kit 93 is tightened together by threaded portion 160,161.Fixation kit can be made with any suitable materials such as plastics or metal.

The arrangement 9 of the transducer among Fig. 5 a be not tightly to be stuck on the panel 2 near the aperture 29, but use near the elastomeric pad 17 at 29 places, panel aperture for example foam rubber come to be connected on the panel with mode identical as shown in Fig. 3 and Fig. 4, like this, under the effect of inertia of the combination quality of each driver, transducer is operated so that bending wave is transmitted in the panel.

In general transducer 9 among Fig. 5 b also is similar to the situation among Fig. 5 a, and different is the side that it only is attached to panel 2.Like this, by means of the resilient suspension part 17 of for example rubber, magnet assemblies 14,15 just is fixed on the surface of panel 2, and 17 of suspended portion stick on the periphery of outer magnetic pole spare 14 flanges 162.

Fig. 5 c shows the same type transducer 9 that shows with Fig. 5 b, and is installed on the panel surface easily.With bobbin 18 and resilient suspension part 17, transducer 9 is installed on the thin matrix, and this matrix adopting forms from adhering to outer, thereby transducer is installed on the relevant position.

The transducer 9 of Fig. 6 is devices of a kind of short profile (low profile), and it can embed in the thickness of distributed panel 2 securely.Transducer comprises cylindrical coil frame 18, can be fixed on by means of bonding agent in the respective aperture 29 of panel 2.Coil 13 is by means of the inner surface of adhesive securement at bobbin 18, to form the motor coil assembly.Bobbin 18 relative axle heads seal with for example plate-like flexible suspension assembly 59 of rubber one class, its each all make annular ripple body 136 at its periphery, be similar to the web-like wrappage of used the sort of shape in the pot type piston formula cone loudspeaker driver element with formation.The periphery of member 59 for example is secured in bobbin 18 axle heads with chucking or by means of bonding agent or with other suitable mode.Settled magnet assemblies between assembly 59 middle bodies, this member middle body is limited by annular ripple body 136, accompanies the relative magnet 15 of a pair of homopolarity of pole element 14 in the middle of this magnet assemblies comprises.The outer surface of magnet 15 is bonding or be fixed on the middle body of assembly 59, thereby makes magnet assemblies 14,15 and coil 13 coaxial laying, and can it carry out restrictive axial motion relatively.

Magnet assemblies shields by means of plate-like radome 121, and radome 121 is installed on the annular resilient assembly 17 that is bearing on the panel 2, is looped around stray magnetic field on the panel to prevent or to limit contiguous transducer.

Though in above-mentioned transducer embodiment, shown that the motor coil assembly is fixed on the panel 2, and shown that magnet assemblies is installed on the panel flexibly, but it should be understood that, can opposed alignment, thus magnet assemblies is fixed on the panel, and the motor coil assembly then is to hang flexibly.So, magnet assemblies should be made to such an extent that light and handy relatively motor coil assembly then should be made to such an extent that the phase counterweight is a little, can strengthen the driving effect like this.

Claims (13)

1. an inertial vibrative transducer (9), be used for Drive assembly (2), this assembly can keep and propagate the inputted vibration energy by the deflection wave in the operating area of at least one its thickness of extending transversely, to have the mode of resonance oscillating component that on described at least one zone, distributes and in described zone, to have predetermined optimum position and the place that is used for transducer apparatus, and has a transducer on the described assembly that is installed in one of described position or place, make its resonance to vibrate described assembly, thereby when resonance, form the acoustic radiator that sound output is provided, described inertial oscillation transducer comprises: the motor coil assembly (13 with coil (13), 18), described coil (13) is fastened on the tubular assembly (18); With the coaxial mounted magnet assemblies of described motor coil assembly (15); With the described magnet assemblies of supporting so that it can make the elastic device (19,136) of axial motion with respect to described motor coil assembly, wherein said tubular assembly (18) directly is fastened on assembly (2) by adhering device (16,20) and goes up so that its vibration.
2. inertial vibrative transducer according to claim 1 is characterized in that described elastic device (19,136) comprises the elastic parts relative to each other of the opposite side that is arranged on described magnet assemblies.
3. inertial vibrative transducer according to claim 1 and 2 it is characterized in that comprising the lid (59,119) of the axle head of sealing described tubular assembly (18), and described elastic device (19,136) is installed on the described lid.
4. according to any one described inertial vibrative transducer in the claim 1 to 2, it is characterized in that described coil (13) is installed in the inner surface of described tubular assembly (18).
5. inertial vibrative transducer according to claim 1 and 2 is laid in the cavity (120) of wherein said motor coil assembly (13,18) respective shapes in described radiator (2).
6. inertial vibrative transducer according to claim 3 is characterized in that described lid (59) comprises described elastic device (136).
7. inertial vibrative transducer according to claim 6 is characterized in that each lid (59) comprises the flexible web-like wrapping portion (136) of a ring-type.
8. inertial vibrative transducer according to claim 6 is characterized in that having magnetic shielding cover (121) on the described lid (59).
9. according to any one described inertial vibrative transducer in the claim 1 to 2, it is characterized in that described motor coil assembly (13,18) is fastened on the surface of described radiator (2).
10. inertial vibrative transducer according to claim 9, it is characterized in that described magnet assemblies (15) comprises the pole element (14) of relative common plate-like, the periphery of one of them pole element is positioned at described motor coil assembly (13,18) among and contiguous described motor coil assembly (13,18), the periphery of another pole element then is formed with flange (162), and described flange (162) is adjacent with described motor coil assembly lays and surround described motor coil assembly.
11. inertial vibrative transducer according to claim 10 is characterized in that described elastic parts (17) folds up between a surface of one of each pole element and described radiator.
12., it is characterized in that described magnet assemblies (15) comprises the relative magnet (15) of a pair of homopolarity that wherein accompanies a pole element (14) according to any one described inertial vibrative transducer in the claim 1 to 2.
13. inertial vibrative transducer according to claim 1 and 2, it is characterized in that being included in complementary magnet assemblies and motor coil assembly on the described radiator apparent surface, and comprise described magnet assemblies is fixed tightly in the device (93) to recommend operation together.
CNB961966270A 1995-09-02 1996-09-02 Inertial vibrative transducer CN1164144C (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB9517918.0 1995-09-02
GBGB9517918.0A GB9517918D0 (en) 1995-09-02 1995-09-02 Acoustic device
GB9522281.6 1995-10-31
GBGB9522281.6A GB9522281D0 (en) 1995-10-31 1995-10-31 Acoustic device
GB9606836.6 1996-03-30
GBGB9606836.6A GB9606836D0 (en) 1996-03-30 1996-03-30 Acoustic device
PCT/GB1996/002167 WO1997009859A1 (en) 1995-09-02 1996-09-02 Inertial vibration transducers

Publications (2)

Publication Number Publication Date
CN1194766A CN1194766A (en) 1998-09-30
CN1164144C true CN1164144C (en) 2004-08-25

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ID=34865253

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB961966270A CN1164144C (en) 1995-09-02 1996-09-02 Inertial vibrative transducer

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EP (1) EP0847676B1 (en)
JP (1) JP3542136B2 (en)
CN (1) CN1164144C (en)
AT (1) AT179044T (en)
AU (1) AU703020B2 (en)
BR (1) BR9610436A (en)
CA (1) CA2229858C (en)
CZ (1) CZ296166B6 (en)
DE (2) DE69602101T2 (en)
DK (1) DK0847676T3 (en)
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BR9610436A (en) 1999-02-17
DK847676T3 (en)
EP0847676B1 (en) 1999-04-14
CZ296166B6 (en) 2006-01-11
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EA000836B1 (en) 2000-04-24
HK1008637A1 (en) 2000-03-24
DE69602101T2 (en) 1999-09-16
PL325237A1 (en) 1998-07-06
IL123375A (en) 2000-10-31
TR199800366T1 (en) 1998-05-21
AU6882396A (en) 1997-03-27
CN1194766A (en) 1998-09-30
DE69602101D1 (en) 1999-05-20
AU703020B2 (en) 1999-03-11
NZ316565A (en) 1998-11-25
CA2229858A1 (en) 1997-03-13
IL123375D0 (en) 1998-09-24
ES2132955T3 (en) 1999-08-16
PL182794B1 (en) 2002-03-29
CA2229858C (en) 2004-06-01
EP0847676A1 (en) 1998-06-17
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EA199800263A1 (en) 1998-10-29
SK285661B6 (en) 2007-05-03
HU9900179A3 (en) 2000-09-28
JP3542136B2 (en) 2004-07-14
DK0847676T3 (en) 1999-10-25
WO1997009859A1 (en) 1997-03-13
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AT179044T (en) 1999-04-15
SK25498A3 (en) 1998-10-07

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