DE102009048866A1 - Device for vibration stimulation of diaphragms or diaphragm-type materials showing frequencies in audio range of humans, has electrical change signal partly converted in mechanical motion, where converter possess hole or opening - Google Patents

Device for vibration stimulation of diaphragms or diaphragm-type materials showing frequencies in audio range of humans, has electrical change signal partly converted in mechanical motion, where converter possess hole or opening

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Publication number
DE102009048866A1
DE102009048866A1 DE200910048866 DE102009048866A DE102009048866A1 DE 102009048866 A1 DE102009048866 A1 DE 102009048866A1 DE 200910048866 DE200910048866 DE 200910048866 DE 102009048866 A DE102009048866 A DE 102009048866A DE 102009048866 A1 DE102009048866 A1 DE 102009048866A1
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DE
Germany
Prior art keywords
drive element
membrane
hole
partially
opening
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.)
Ceased
Application number
DE200910048866
Other languages
German (de)
Inventor
Robert Boesnecker
Original Assignee
Bösnecker, Robert, Dr.
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Filing date
Publication date
Application filed by Bösnecker, Robert, Dr. filed Critical Bösnecker, Robert, Dr.
Priority to DE200910048866 priority Critical patent/DE102009048866A1/en
Publication of DE102009048866A1 publication Critical patent/DE102009048866A1/en
Application status is Ceased legal-status Critical

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02Details
    • H04R9/022Cooling arrangements
    • 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
    • H04R2499/11Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
    • 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

Abstract

The invention describes a converter of electrical alternating signals into mechanical oscillatory movements which can be used as a drive element for membranes or membrane-like materials which can at least partially reproduce frequencies in the human hearing range. In this case, the converter has at least partially a material-free region, preferably in its center. This opening use other materials or consistencies at least partially advantageous for the realization of novel applications and / or to increase the performance of the drive element.

Description

  • The device disclosed herein serves to excite vibrations of materials preferably of any solid consistency, the drive element preferably having at least one hole and / or opening passing through the entire drive element in its center. At least preferably, the center of the vibrator is devoid of material which, for example, is beneficial to overall weight and / or aeration and further provides a wealth of new applications of the drive member.
  • Furthermore, a method is described which shows the generation of acoustic signals by means of the above-mentioned drive element. In this case, an implementation of an electrical signal is carried out in a mechanical vibration movement. The converter is then coupled to another material that transmits the vibrations. Thus, the converter drives the other material, which is why it can also be referred to as a drive element. The drive element preferably operates according to the electrodynamic principle. However, other principles may also be used, such as the piezoceramic principle.
  • Task:
  • Some previous drive elements work with a central magnet, which is often designed as a disc magnet. Other drive elements work with ring magnets and pole pieces and / or pole pieces, which accomplish the leadership of the magnetic field lines.
  • The previously disclosed structures are constructed so that in the middle of the drive system preferably magnets and / or pole pieces and / or other material are.
  • The invention disclosed herein demonstrates how to allow weight reduction through a novel design with the center of the drive system free of material and thus the system has less weight compared to a system of prior art design.
  • Another part of this invention is to allow at least partially improved ventilation of the vibrating coil through the "center hole", resulting in a higher continuous load and bringing forth a further advantage over the systems of old, known construction.
  • Another part of this invention is that through the "center hole" further substances and / or consistencies such as light, water, air, scents, powders, ropes, drive elements and much more connected to the vibration exciter and / or passed through it and / or be guided through it and / or released and / or transmitted with its help.
  • Examples:
  • Recessed ceiling light with electrodynamic drive element:
  • In this application example, a ceiling plate is to be used on the one hand to include a light and on the other hand to act as a diaphragm for a drive element. In this case, the following problem has occurred so far:
    When using a strong LED and / or halogen lamp as a light source is generated during operation waste heat, which must be derived. For example, in the case of the central magnet technology used so far, an LED can only be mounted below the vibration exciter. The disclosure of Siemens AG EP 1977627 describes in one application, the use of LEDs, the subject is not treated waste heat. The disclosure only shows how bulbs are to be mounted below the vibration exciter.
  • Here, however, there is a significant problem in practice:
  • LEDs that do not produce waste heat have low luminosity. They can be used as effect lighting, they are not suitable for general lighting. Now, if powerful bulbs, such as halogen lamps, used, so in this application under the drive element generates a great heat, which damages the magnetic system of the drive element, since permanent magnets lose their magnetic property at too high a heat. This occurs depending on the magnetic material at 80 to 150 degrees Celsius. But modern bulbs are getting warmer.
  • One solution provides the disclosed here construction of the drive element with center hole. The light source can now be placed above the drive element and its light is at least partially passed through the drive element centered therethrough. The waste heat of the lamp rises upwards, ie away from the drive element, and thus does not destroy the magnet system due to the thermal load.
  • Ceiling plate with water dispenser and drive element:
  • For example, a water-donating property such as in sprinklers Equipment is used, be added to the vibration excitation or vice versa.
  • Ceiling plate with air dispenser and drive element:
  • For example, an air-giving property as used for example in air conditioning systems to be added to the vibration excitation or vice versa.
  • In both cases, the previously used constructions of magnet and voice coil prove to be unsuitable because they have in their midst the magnet system and / or pole pieces. As a result, the above-mentioned additional functions can not be realized, for example, or only to a very limited extent. This disclosure now solves the problem according to the invention by a centrally and / or substantially centrally material-free construction. Thus, as mentioned in the above example, water or air can flow through the center hole.
  • Sound improvement in mobile phones:
  • The sound of previous mobile phones is curtailed by the limited size of the speaker. Increasingly large display areas prevent the installation of larger speakers. The bigger the display surfaces become, the smaller the speakers have to become. With the help of the drive element with center hole can allow a rethink here. The drive element is in this case formed substantially rectangular and adapted in size so that it is slightly larger than the display itself. The drive element with center hole looks in this application rather like a frame that extends around the display. The vibrations generated by the drive element are passed on the display past the front screen of the mobile phone. Thus, the display is little or not affected by the vibrations. As the display size increases, the drive element also grows, which has a positive effect on its performance and thus on its sound.
  • This example works differently to Sound-VU technology. The SoundVU technology of the company nxt tried with previously known drive elements (without center hole) to use a display screen as a membrane. Since the previously known drive elements have no center hole, the drive elements are positioned in the corners of the display screen. However, they suffer from the same problem as the conventional loudspeakers of mobile phones: the larger the displays, the smaller the acoustic elements have to be.
  • Sound improvement in the interior of automobiles:
  • A simple way, for example, to provide the driver of an automobile with improved audio sound is to equip the air outlet openings or air nozzles in the interior with drive elements with center hole. Usually located on the right and left side next to the driver in each case an air nozzle. The drive elements are now designed so that their dimensions are slightly larger than the dimensions of the air nozzle, whereby they can virtually form a frame around the air nozzle. Thus, the air can flow through unhindered. In addition, the drive elements generate vibrations that stimulate the dashboard and / or the interior trim to resonate. Thus, audio signals, for example those of the car radio, can be made audible to the driver. Since the driver usually sits in the middle between the right and the left air nozzle, a better stereo sound pattern can be generated than is possible with conventional door loudspeakers.
  • Hearing improvement in humans:
  • Only too well known are hearing aids in which the patient gets a hazelnut-sized electric plug inserted into the ear, which completely closes his ear canal. This "closure" is necessary so that acoustic feedback between the microphone on the outside and a loudspeaker in the inside of the hearing aid can be avoided. Even if the hearing organ is still partially functioning, the patient has no chance to perceive his outer world in the original. He can only hear the speaker of the hearing aid, which is often not enjoyable due to the limited frequency response. Here, the drive element with center hole can now be used simply and usefully: The diameter of the drive element is designed so that the patient can put the "hearing ring" over the ear. The hearing ring then clamps between the outer ear and the skull. The generated vibrations are now transmitted not to the eardrum of the patient, but to the skull bone around the ear. This leaves the eardrum free. The hearing ring transmits virtually only the patient's missing frequency components. The ring is powered by additional electronics that include microphones, signal processing, amplifiers and battery. Two hearing rings are necessary for the patient to hear twice. These can be designed round, but also oval shapes are possible. Furthermore, the hearing rings can be stabilized and / or fixed by brackets or the like, as is the case for headband headphones, for example, to ensure a better grip.
  • Of course, normal hearing people use these ear rings instead of headphones, because advantageously the eardrums remain free, and thus the ambient noise can be perceived true to the original, which is for example in the road or certain occupations of great importance.
  • Furthermore, wherever an opening already exists, an acoustic property can be added by a drive element with a correspondingly adapted opening, without the function of the original opening must be disturbed.
  • Description of the pictures
  • 1
    This figure shows a cross section through a drive element with center hole. A permanent magnet 1 supplies the magnetic field, the materials that conduct magnetism 2 , so-called pole pieces, is shaped so that a coil 3 be in it and move in it. The movement is in the picture up and down, so vertical. The sink 3 is also to be seen in cross section and here by way of example with three turns (three black dots) indicated. The coil is on a bobbin 6 wound.
  • As well as the bobbin 6 can be seen in cross-section, it can be seen only as a fine line. At the top and bottom of the bobbin 6 there are tails 4 where a suspension 5 is attached. This suspension fixes the bobbin and thus also the coil on the inner pole piece N.
  • The coil windings are over the supply lines 7 powered.
  • The middle vertical line represents the symmetry axis to which the representation of the drive element is symmetrical.
  • The line is not part of the drive element.
  • 2
    This figure also shows a cross section through a drive element with center hole. A permanent magnet 1 provides the magnetic field through pole pieces 2 , is shaped so that a coil 3 be in it and move in it. The movement is in the picture up and down, so again vertically. The sink 3 is also to be seen in cross section and here by way of example with three turns (three black dots) indicated. The coil is on a bobbin 6 wound. As well as the bobbin 6 can be seen in cross-section, it can be seen only as a fine line. At the top and bottom of the bobbin 6 there are tails 4 where a suspension 5 is attached. This suspension fixes the bobbin and thus also the coil on the outer pole piece S.
  • The power supply lines are not shown for reasons of clarity.
  • The middle vertical line again represents the symmetry axis to which the representation is symmetrical. It is not part of the drive element.
  • 3
    This figure again shows a cross section through a drive element with center hole. The permanent magnet 1 consists here of several individual magnets.
  • The pole pieces 2 are designed to be able to operate a plurality of magnets.
  • The coil system off 3 . 4 . 5 is not shown. The middle vertical line again represents the symmetry axis to which the representation is symmetrical. It is not part of the drive element.
  • 4
    This figure again shows a cross section through a drive element with center hole. The permanent magnet 1 However, here has a horizontal magnetization direction. The pole pieces 2 are designed to be able to operate the vertical direction of magnetization.
  • The coil system off 3 . 4 . 5 is not shown.
  • The middle vertical line again represents the symmetry axis to which the representation is symmetrical. It is not part of the drive element.
  • 5
    This figure again shows a cross section through a drive element with center hole. However, here are two permanent magnets 1 used. Both are vertically magnetized and poled so that a magnetic field can form in which the coil can move and move. In this example, no pole pieces are necessary. In order to hold the magnets in position becomes a non-magnetism material 8th , for example, a plastic used.
  • The middle vertical line again represents the symmetry axis to which the representation is symmetrical. It is not part of the drive element.
  • 6
    This figure shows a cross section through and a plan view of a drive element with center hole. Here is an example of a layered magnet system 1 shown. Many vertically magnetized part magnets form an overall system in this arrangement.
  • By appropriate design of the pole pieces 2 can create a very powerful overall system.
  • The plan view shows only the magnet system by way of example without the pole pieces.
  • The coil system off 3 . 4 . 5 is not shown.
  • 7
    This figure also shows a cross section through and a plan view of a drive element with center hole. Here is an example of a segmented magnet system 1 shown.
  • Should be ring shaped magnets like in 6 For reasons of cost can not come into question, for example, by the use of inexpensive bar magnets also the desired magnetic field can be generated.
  • The plan view shows only the magnet system by way of example without the pole pieces. It can be used more or less partial magnets, it can also be used, for example, magnetic segments.
  • The coil system off 3 . 4 . 5 is not shown.
  • The drive element itself has no own membrane. It can therefore operate on its own, no loud sounds and / or sounds and / or reproduce. Since essentially the bobbin vibrates, the excitation of the air is very low and spectrally very limited. Its desired action reaches the drive element at least partially only in conjunction with a membrane. In this case, preferably, a connection of the outer end piece 4 the bobbin with the membrane to be excited at least partially made. Thus, the membrane is excited to vibrate, it creates, for example, a flat speaker.
  • Description of a flat-panel loudspeaker:
  • Area loudspeakers are understood in this disclosure to mean so-called transversal wave loudspeakers. In contrast, so-called longitudinal wave loudspeakers are used in most conventionally used sound generators.
  • A longitudinal wave loudspeaker works like a piston-stroke loudspeaker. A mostly cone-shaped diaphragm is excited by an electrically amplified audio signal to reciprocate on an axis and thus at least partially generate an acoustic image of the audio signal. The sound waves generated by this loudspeaker are aligned in the longitudinal direction to it.
  • A transversal wave speaker works like a vibrating surface. By a corresponding vibration drive, which is usually electrodynamic, a surface is excited to vibrate. This vibrating surface now produces a sound wave image that is completely different from the above-mentioned longitudinal waves. This wave pattern is called the transverse wave image, as it develops along the sound surface. This principle has been known for example in musical instrument making for centuries. In loudspeaker construction, this principle has existed at least since the Blatthaller, an invention of Walter Schottky at Siemens in Berlin in the 1920s.
  • Other patents cited in the prior art indicate that the transverse wave principle is well known. Speakers working on this principle have a mostly plate-shaped membrane. This can be flat or curved.
  • By an appropriate drive the membrane surface is excited to vibrations. These vibrations stimulate the surrounding air to vibrate. If the vibration frequencies are in the audible range, they are perceived as an acoustic event. The sound-generating principle is thus based on a preferably areally formed membrane which vibrates and thus stimulates the surrounding medium, for example water or air to vibrate.
  • Differentiation to the state of the art:
  • From the state of the art, for example, acoustic excitation systems are known which accomplish the conversion of an electrical signal into a corresponding movement by means of a permanent magnet and a coil. These systems have in their center a round and / or cylindrical permanent magnet, which is designed as a permanent magnet and generates the magnetic field in which the coil moves. The coil also consists of a round and / or cylindrical body on which a conductive wire is wound. If this bobbin has a diameter which is slightly larger than the diameter of the magnet and / or of the magnet system, the magnet is always located in the center of this arrangement of magnet and coil.
  • If this bobbin has a diameter which is slightly smaller than the diameter of the magnet and / or of the magnet system, there is always a pole piece in the center of this magnet and coil arrangement.
  • In this patent, a lampshade is used as a membrane and excited to vibrate. The drive system is located in the vertical part of the lamp base and fills it completely. A middle hole is not revealed.
    • DE 484872
    • Device for acoustic window display
    • DE Patent, Dietz, Bothe and Bauch, 1929
  • In this patent, a shop window is used as a membrane and excited to vibrate. The drive system consists of a coil, a Mittenfuß and a magnet system. It works on the principle of inertia. The construction of the drive element is completely closed. A middle hole is not revealed.
    • US 2,341,275
    • Sound Reproducing Instrument
    • US Patent, Glen Holland, 1944
  • In this patent specification, a drive element is described which allows a conversion of electrical energy into kinetic energy and as a vibrator stimulates the coupled to him surfaces to vibrate. The construction shows that the magnetic field is shaped by a permanent magnet and pole pieces so that a voice coil can move therein. The pole pieces comprise a cylindrical central block (low carbon steel plug (17)) whereby the center of the drive system is filled with material. A middle hole is not revealed.
    • US 3,178,512
    • Electrical Sound Reproducing Device
    • US Patent, William Ashworth, 1965
  • In this patent specification, a drive element is described which allows a conversion of electrical energy into kinetic energy and as a vibrator stimulates the coupled to him surfaces to vibrate. The construction shows that the magnetic field is generated by an electromagnet, which is located in a more typical for transformers, E-shaped metal core. The vibrating coil is wound around the center leg of the E-shaped metal core. Also in this construction, no center hole can be found.
  • In this patent a flat pronounced speaker is described. The surface is excited by a centrally arranged drive system to vibrate. The drive system has a central magnet and is completely closed in the middle. A middle hole is not revealed.
  • In this patent specification, a drive element is described which allows a conversion of electrical energy into kinetic energy and as a vibrator stimulates the coupled to him surfaces to vibrate. The construction shows that the magnetic field is shaped by a permanent magnet and pole pieces so that a voice coil can move therein. In the central axis of the rotationally symmetrical structure is a metal post (post), which establishes the connection to the membrane and transmits the vibration. As a result, the center of the drive system is filled with material. A middle hole is not revealed.
    • US 3,430,007
    • Dynamic Transducer with Wall Mounted Diaphragm
    • US Patent, D. Thielen, 1969
  • In this patent specification, a drive element is described which allows a conversion of electrical energy into kinetic energy and as a vibrator stimulates the coupled to him surfaces to vibrate. The construction shows that the magnetic field is formed by a permanent magnet and pole pieces so that a Voice coil can move in it. In the central axis is a screw, which establishes the connection to the wall and transmits the vibration. As a result, the center of the drive system is filled with material. A middle hole is not revealed.
    • US 3,524,027
    • Sound Transducer with Wall Mounted Diaphragm
    • US Patent, Richard Thurston, 1970
  • In this patent specification, a drive element is described which allows a conversion of electrical energy into kinetic energy and as a vibrator stimulates the coupled to him surfaces to vibrate. The construction shows that the magnetic field is shaped by a permanent magnet and pole pieces so that a voice coil can move therein. In the central axis is a screw, which establishes the connection to the wall and transmits the vibration. As a result, the center of the drive system is filled with material. A middle hole is not revealed.
    • US 3,553,392
    • Electrodynamic Sound Radiator
    • US Patent, Arthur Liebscher, 1971
  • In this patent specification, a drive element is described which allows a conversion of electrical energy into kinetic energy and as a vibrator stimulates the coupled to him surfaces to vibrate. The construction shows that the magnetic field is shaped by a permanent magnet and pole pieces so that a voice coil can move therein. In the central axis is a central pole piece (a center pole piece (16)). As a result, the center of the drive system is filled with material. A middle hole is not revealed.
    • US 3,636,281
    • Loudspeaker using wall as diaphragm
    • US Patent, Robert Cozart, 1972
  • In this patent specification, a drive element is described which allows a conversion of electrical energy into kinetic energy and as a vibrator stimulates the coupled to him surfaces to vibrate. The construction shows that the magnetic field is shaped by a permanent magnet so that a voice coil can move therein. The magnet has an opening in its center. However, a bottom plate destroys ( 12 ) and a housing ( 36 ) the use of this opening.
  • The center of the drive system is filled with material above and below the magnet. A continuous center hole is not the teaching of this patent.
    • US 3,728,497
    • Dynamic Transducer using Wall as Diaphragm
    • US Patent, A. Komatsu, 1973
  • In this patent specification, a drive element is described which allows a conversion of electrical energy into kinetic energy and as a vibrator stimulates the coupled to him surfaces to vibrate. The construction shows that the magnetic field is shaped by a permanent magnet and pole pieces so that a voice coil can move therein. In the central axis is a screw, which establishes the connection to the wall and transmits the vibration. As a result, the center of the drive system is filled with material. A middle hole is not revealed.
    • US 4,151,379
    • Electromagnetic Speaker with buckling parallel ...
    • US Patent, William Ashworth, 1979
  • In this patent specification, a drive element is described which allows a conversion of two electric energy generators into a kinetic energy and as a vibrator excites the surfaces coupled to it to vibrate. In this case, the construction shows that the magnetic field is formed by a permanent magnet and pole pieces so that two coils wound on the same coil carrier can move therein. One coil is for the low frequencies, the other for the high frequencies. In the central axis is a screw, which establishes the connection to the wall and transmits the vibration. As a result, the center of the drive system is filled with material. A middle hole is not revealed.
    • US 4,392,027
    • Method and Apparatus for providing ...
    • US Patent, Thomas Bock, 1983
  • In this patent specification, a drive element is described, which allows a sonication of an aircraft interior cabin in that it excites the interior lining of the cabin to vibrations. With the help of the drive element, a conversion of an electrical energy into a kinetic energy is made possible. It thus serves as a vibrator, which excites the coupled to him surfaces to vibrate. In the central axis is a screw which connects to the cabin panel and transmits the vibration. As a result, the center of the drive system is filled with material. A middle hole is not revealed.
    • US 4,506,117
    • Electroacoustic Transducer
    • US Patent, Marcel Fresard, 1985
  • In this patent specification, a drive element is described which allows a conversion of electrical energy into kinetic energy and as a vibrator stimulates the coupled to him surfaces to vibrate. The construction shows that the magnetic field generated by two permanent magnets and through Pole pieces is shaped so that a voice coil can move in it. In the central axis is a foot, which establishes the connection to the wall and transmits the vibration. As a result, the center of the drive system is filled with material. A middle hole is not revealed.
    • US 4,514,599
    • Speaker for Automotive Vehicle ...
    • US Patent, Takayuki Yanagishima, 1985
  • In this patent specification, a drive element is described, which allows a conversion of electrical energy into kinetic energy and vibrator excites the coupled to him, defined area to vibrate. The surface is part of the acoustic equipment of a vehicle. In this case, the construction shows that the magnetic field is generated by a permanent magnet and formed by pole pieces so that a voice coil can move therein. In the central axis is a foot, which establishes the connection to the vehicle surface and transmits the vibration. As a result, the center of the drive system is filled with material. A middle hole is not revealed.
  • In this patent specification, a drive element is described, which allows a conversion of electrical energy into kinetic energy and as a vibrator stimulates the surface coupled to it to vibrate. In the central axis is a screw, which establishes the connection to the wall and transmits the vibration. As a result, the center of the drive system is filled with fastening material. A middle hole is not revealed.
    • US 4,951,270
    • Audio Transducer Apparatus
    • US Patent, Jay Andrews, 1990
  • In this patent specification, a drive element is described, which allows a conversion of electrical energy into kinetic energy and as a vibrator stimulates the surface coupled to it to vibrate. The construction shows that the magnetic field can be generated by two permanent magnets and fixed by a kind of hinged dowel to the wall. In the center axis is this hinged dowel, which establishes the connection to the wall surface and transmits the vibration. As a result, the center of the drive system is filled with fastening material. A center hole within the driver is not taught in this invention.
  • In this patent specification, a drive element is described, which allows a conversion of electrical energy into kinetic energy and as a vibrator stimulates the surface coupled to it to vibrate. The construction shows that the coil is stationary and the magnet is caused to oscillate. In the middle of the drive element is the pole plate on which the coil is wound. As a result, the center of the drive system is filled with magnetizable material. A center hole within the driver is not taught in this invention.
    • WO 97/09861
    • Inertial Vibration Transducer
    • PCT Patent, Henry Azima, 1997
  • In this disclosure, a vibration exciter is described which excites a diaphragm to vibrate. Due to the inertia of the drive system, the exciter requires no further attachment than at the diaphragm itself. The drive system uses a piezo and is completely closed in the middle. A middle hole is not revealed.
  • In this patent specification, a drive element is described which allows a conversion of electrical energy into kinetic energy and as a vibrator stimulates the coupled to him surfaces to vibrate. In this case, the construction shows that the voice coil is seated on a printed circuit board, wherein the circuit board completely closes the drive element. In the central axis is thus at least the continuous circuit board. A center hole is not mentioned in the teaching of this invention.
  • All publications published so far show no drive elements with center hole and / or combinations of drive element with center hole and a further, non-acoustic use. However, this invention greatly expands the operational potential of the vibration generating drive member through the center hole. Thus, a corresponding economic success is to be expected.
  • definitions:
  • "Membrane" refers to an object that extends at least in two dimensions and that is capable of reproducing frequencies in the human hearing range when it is caused to oscillate by a corresponding drive. Examples of membranes are cardboard, aluminum sheets, plastics, woods, stoneware, marble, natural materials and foamed materials and generally materials that have a massive and / or cell-like structure. As examples of cell-like structures, honeycomb panels, rigid foam panels, gas concrete panels and / or other panels having cavity-forming structures may be mentioned here. The cavities may also be less than 1 mm 3 and be present in large quantities. Acrylic glass and / or gypsum fiber material and / or ceiling panels and / or sheet steel or other solid, non-porous materials of any shape may be mentioned here as examples of solid panels.
  • "Membrane-like material" refers to an object that extends at least in two dimensions and that becomes a membrane in combination with at least one composite material. For example, air bubble film or glass fiber mats are referred to herein as membrane-like materials. Taken alone, they can only be used to a limited extent as a membrane. In combination with other materials, however, materials are produced whose use as a membrane is positively influenced. The composite thus has improved properties such as mechanical stability and is also still at least partially suitable for use as a membrane.
  • "Recess" refers to a lack of material of any consistency extending at least in two dimensions. Preferably, the recess has a depth.
  • "Hole" refers to a recess whose geometry is preferably circular and further has a depth equal to the depth of the "punched" material. For example, the center hole in a CDROM is a "hole" in the sense of this document.
  • "Opening" refers to a hole of any shape and / or geometry.
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • EP 1977627 [0008]
    • US 1552914 [0051]
    • DE 484872 [0052]
    • US 2341275 [0053]
    • US 3178512 [0054]
    • US 3247925 [0055]
    • US 3366749 [0056]
    • US 3430007 [0057]
    • US 3524027 [0058]
    • US 3553392 [0059]
    • US 3636281 [0060]
    • US 3728497 [0062]
    • US 4151379 [0063]
    • US 4392027 [0064]
    • US 4506117 [0065]
    • US 4514599 [0066]
    • US 4914750 [0067]
    • US 4951270 [0068]
    • US 5546469 [0069]
    • WO 97/09861 [0070]
    • DE 102007001875 A1 [0071]

Claims (2)

  1. A device for vibrational excitation of membranes and / or membrane-like materials which can at least partially reproduce human hearing frequencies, characterized in that at least one electrical alternating signal is at least partially translated into mechanical motion, the transducer preferably in one direction at least one hole and / or has at least one arbitrarily shaped opening.
  2. A method of operating a membrane and / or membrane-like material according to claim 1 characterized in that at least one transducer is attached by means of at least partial coupling to and / or into and / or to said membrane and / or said membrane-like material, that he can pass his vibrations at least partially to the membrane and Substances of solid, liquid, gaseous and / or any other mixed consistencies or and Perceptions of the human senses, such as light and / or fragrance and / or sound and / or feeling, through the hole and / or the opening of the converter at least partially therethrough guided and / or directed and / or transfer and / or served and / or attached and / or sprayed and / or blown and / or transported and / or are transported and / or in another manner not mentioned, preferably the hole and / or the opening of the converter at least partially advantageous and / or functional use.
DE200910048866 2009-08-27 2009-08-27 Device for vibration stimulation of diaphragms or diaphragm-type materials showing frequencies in audio range of humans, has electrical change signal partly converted in mechanical motion, where converter possess hole or opening Ceased DE102009048866A1 (en)

Priority Applications (1)

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DE200910048866 DE102009048866A1 (en) 2009-08-27 2009-08-27 Device for vibration stimulation of diaphragms or diaphragm-type materials showing frequencies in audio range of humans, has electrical change signal partly converted in mechanical motion, where converter possess hole or opening

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DE200910048866 DE102009048866A1 (en) 2009-08-27 2009-08-27 Device for vibration stimulation of diaphragms or diaphragm-type materials showing frequencies in audio range of humans, has electrical change signal partly converted in mechanical motion, where converter possess hole or opening

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DE102009048866A1 true DE102009048866A1 (en) 2011-03-03

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE484872C (en) 1929-10-26 Dietz Device for acoustic showcase advertising
US1552914A (en) 1919-11-22 1925-09-08 Forest Phonofilm Corp De Telephone device
US2341275A (en) 1940-11-16 1944-02-08 Holland Glen Sound reproducing instrument
US3247925A (en) 1962-03-08 1966-04-26 Lord Corp Loudspeaker
US3178512A (en) 1962-08-23 1965-04-13 Artnell Company Electrical sound reproducing device
US3366749A (en) 1964-04-09 1968-01-30 Allen Alan A Audio transducer
US3430007A (en) 1966-03-16 1969-02-25 Rolen Diversified Investors In Dynamic transducer with wall mounted diaphragm
US3524027A (en) 1967-05-04 1970-08-11 Rolen Diversified Investors In Sound transducer with wall mounted diaphragm
US3553392A (en) 1968-03-07 1971-01-05 Electronics Inc Of Pennsylvani Electrodynamic sound radiator
US3636281A (en) 1969-01-13 1972-01-18 Robert T Cozart Loudspeaker using wall as diaphragm
US3728497A (en) 1970-07-06 1973-04-17 A Komatsu Dynamic loudspeaker using wall as diaphragm
US3979566A (en) * 1973-12-12 1976-09-07 Erazm Alfred Willy Electromagnetic transducer
US4151379A (en) 1978-03-01 1979-04-24 Ashworth William J Electromagnetic speaker with bucking parallel high and low frequency coils drives sounding board and second diaphragm or external apparatus via magnetic coupling and having adjustable air gap and slot pole piece
US4392027A (en) 1978-05-05 1983-07-05 Messerschmitt-Boelkow-Blohm Gesellschaft Mit Beschraenkter Haftung Method and apparatus for providing a uniform sound distribution in an aircraft cabin
US4514599A (en) 1980-12-19 1985-04-30 Nissan Motor Company, Limited Speaker for automotive vehicle audio system having a vehicle panel serving as sound-amplifying medium
US4506117A (en) 1981-12-22 1985-03-19 Multiphonie S.A. Electroacoustic transducer
US4914750A (en) 1987-07-13 1990-04-03 Avm Hess, Inc. Sound transducer
US4951270A (en) 1989-06-20 1990-08-21 Andrews Jay E Audio transducer apparatus
US5546469A (en) 1994-08-15 1996-08-13 Donahoe; Danny T. Sound transducer
WO1997009861A1 (en) 1995-09-02 1997-03-13 New Transducers Limited Inertial vibration transducers
WO2004034737A1 (en) * 2002-10-10 2004-04-22 New Transducers Limited Magnet assembly for loudspeakers
US20040218778A1 (en) * 2003-05-01 2004-11-04 Weisman Richard L. Loudspeaker suspension for achieving very long excursion
DE102007001875A1 (en) 2006-01-19 2007-10-04 Citizen Electronics Co., Ltd., Fujiyoshida Electromagnetic exciter device
EP1977627A1 (en) 2006-01-26 2008-10-08 Siemens Aktiengesellschaft Environmental lighting device

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