EP3340650A2 - Device for stimulating vibrations and use of such a device - Google Patents
Device for stimulating vibrations and use of such a device Download PDFInfo
- Publication number
- EP3340650A2 EP3340650A2 EP17206899.1A EP17206899A EP3340650A2 EP 3340650 A2 EP3340650 A2 EP 3340650A2 EP 17206899 A EP17206899 A EP 17206899A EP 3340650 A2 EP3340650 A2 EP 3340650A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- excitation means
- transformer structure
- arms
- excitation
- vibrations
- 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.)
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- 230000004936 stimulating effect Effects 0.000 title 1
- 230000005284 excitation Effects 0.000 claims abstract description 48
- 230000005236 sound signal Effects 0.000 claims abstract description 8
- 230000003534 oscillatory effect Effects 0.000 claims abstract 2
- 230000008878 coupling Effects 0.000 claims description 14
- 238000010168 coupling process Methods 0.000 claims description 14
- 238000005859 coupling reaction Methods 0.000 claims description 14
- 239000004918 carbon fiber reinforced polymer Substances 0.000 claims description 9
- 238000004146 energy storage Methods 0.000 claims description 4
- 230000001939 inductive effect Effects 0.000 claims description 4
- 238000009795 derivation Methods 0.000 claims 1
- 230000010355 oscillation Effects 0.000 abstract description 4
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011554 ferrofluid Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
- H04R9/063—Loudspeakers using a plurality of acoustic drivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/045—Plane 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details 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
- H04R2307/023—Diaphragms comprising ceramic-like materials, e.g. pure ceramic, glass, boride, nitride, carbide, mica and carbon materials
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details 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
- H04R2307/029—Diaphragms comprising fibres
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2440/00—Bending wave transducers covered by H04R, not provided for in its groups
- H04R2440/05—Aspects relating to the positioning and way or means of mounting of exciters to resonant bending wave panels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/13—Acoustic transducers and sound field adaptation in vehicles
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/022—Cooling arrangements
Definitions
- the invention relates to a device for excitation of oscillations with a preferably star-shaped planar extensively distributed transformer structure.
- the device can be used in a loudspeaker for the reproduction of audio signals.
- the invention relates to possible uses of such a device.
- a surface diaphragm type exciter in which an acoustic vibration excitation element is connected to a coupling ring by means of a releasable connection, the coupling ring being connected to a sound emitting surface.
- the exciter can be used, for example, together with the sound-emitting surface as speakers in vehicles or aircraft for playback of audio signals.
- a vibrator for a flat speaker and a flat speaker which has such a vibrator and an excited to vibrate panel. It also shows a vehicle in which at least one such flat speaker is installed, the panel forming a portion of the vehicle itself.
- a disadvantage of the solutions mentioned is the relatively small power density of the speakers, which is transferable to the sound-emitting surface.
- the invention has for its object to provide an aforementioned device and a corresponding use, with which solved problems of the prior art can be and in particular a powerful device for exciting vibrations with a transformer structure can be created.
- the device has a star-shaped, extensively extended transformer structure.
- this form of transformer structure has proven to be particularly advantageous.
- the transformer structure is fixed between two excitation means by means of a coupling mechanism.
- the coupling mechanism is designed in particular for mounting purposes detachable.
- the excitation means have at least one permanent magnet with an annular gap, at least one annular plunger coil and at least one vibrating part carrier.
- the immersion coil can be traversed by electric current and generates a dependent of the excitation signal electromagnetic alternating field, thereby moving the plunger coil in the annular gap of the permanent magnet. This function of a plunger coil is well known to the skilled person and is therefore not explained in detail.
- the vibrating part carrier is mechanically or constructively connected to the plunger and passes the vibrations on.
- the device with two excitation means which excite the transformer structure to be excited from two opposite sides, achieves a high power density of the oscillations in the transformer structure.
- the excitation means oscillate 180 ° out of phase with each other.
- the device is designed such that vibrations with frequencies in the audible range of human hearing can be excited.
- these frequencies are between 15 Hz and 20 kHz.
- the operation of the excitation means requires electronic circuits such as drivers, amplifiers, etc.
- the electronic circuits are integrated in at least one of the excitation means in a preferred embodiment of the invention. As a result, the required installation space of the device is kept low and the device can be realized relatively flat.
- a further advantageous embodiment of the invention therefore envisages integrating energy storage in the form of at least one battery and / or at least one accumulator into at least one of the excitation means.
- An energy store can also run through both excitation means, so that it has sufficient storage space and can be sufficiently large.
- the heat generated during operation of the device must be removed from the device. This is done in a further advantageous embodiment of the invention over existing from carbon fiber reinforced plastic, spring-like elements that forward the resulting heat to the excited transformer structure. There, the heat can be distributed over a large area and released to the environment. Ideally, then can be dispensed with the ferrofluid used in the prior art. By dispensing with ferrofluid, the device can be produced significantly cheaper and soiling is prevented.
- the transformer structure is made of carbon fiber reinforced plastic. This has proven to be particularly advantageous because carbon fiber reinforced plastic has a high rigidity, resulting in particularly good vibration transmission properties.
- the device has a plurality of separate arrangements consisting of a respective permanent magnet, each having an annular gap, and in each case a plunger coil for different frequency ranges of the vibrations to be excited.
- a respective permanent magnet each having an annular gap
- a plunger coil for different frequency ranges of the vibrations to be excited.
- the device comprises at least one permanent magnet, which has at least one annular gap, and at least one annular plunger coil, which for the inductive generation of electrical energy from the Vibration of the transformer structure can be used. This can be obtained from an external excitation of the transformer structure electrical energy.
- the device may have at least one coil for the inductive coupling of electrical energy. This coil may be one of the immersion coils, but may also be a separate coil.
- the recovered electrical energy is advantageously stored in an energy store in the form of a rechargeable battery, which is already integrated in the device.
- the extensively extended Mattertrager founded a plurality of arms which are arranged distributed radially around a central region, which can give a star shape. It has proven to be particularly advantageous to use 6 arms.
- the lengths of the arms are typically in the range of 3 cm to 50 cm, advantageously 6 each having a different length.
- the width of the arms is preferably in the range 5 mm to 50 mm, the height of the arms advantageously in the range 1 mm to 5 mm.
- the central area and the arms extending therefrom advantageously span an area of 20 cm 2 to 8000 cm 2 .
- the transformer structure may have a height of 1 mm to 5 mm over a support surface, wherein the total height of the device may be between 2 mm and 10 mm.
- the central region of the transformer structure may have an increase relative to the arms distributed radially around the central region.
- the excitation means are advantageously arranged in the central area, the transmitter structure being arranged between two excitation means, one above and one below.
- the device can be advantageously used as a loudspeaker for reproducing audio signals such as music or voice announcements.
- the device is suitable for use in motor vehicles, aircraft and / or spacecraft.
- a part of the coupling mechanism between the vibrating member carrier and the transformer structure and the transformer structure are in one arranged parent component.
- This can be z. B. happen that a part of the coupling mechanism and the transformer structure in a plastic part such.
- an interior trim panel of an airplane or car may be incorporated during manufacture or may be part of it.
- the excitation means can then be applied subsequently, which saves manufacturing time, simplifies the adjustment and ensures easy interchangeability.
- Fig. 1 shows an oblique view of an embodiment of the device according to the invention.
- the device consists of a stimulable extensively extended transformer structure 11, which is arranged between a first excitation means 20 and a second excitation means 30.
- the transformer structure 11 has 6 elongated arms 12 which are arranged distributed radially around a central region, so that a star shape is formed.
- the arms 12 each have different lengths. Typical lengths are in the range of 3 cm to 50 cm.
- the width of the arms 12 is typically in the range 5 mm to 50 mm, the height or thickness of the arms 12 typically in the range 1 mm to 5 mm.
- the central area and the one of it outgoing arms 12 thereby span an area of typically 20 cm 2 to 8000 cm 2 .
- the transformer structure 11 consists of CFRP, that is, a carbon fiber-reinforced plastic. This makes the transformer structure 11 particularly stable, and the high rigidity of carbon fiber reinforced plastic allows good vibration transmission characteristics.
- CFRP that is, a carbon fiber-reinforced plastic.
- the shape and the choice of material of the transformer structure have proven to be the most distortion-free reproduction of audio signals as particularly advantageous.
- the first excitation means 20 and the second excitation means 30 have a round shape.
- the outer circumference of the first and second excitation means 20 and 30 is each no larger than the circumference of the central region of the transformer structure 11.
- an energy store 40 in the form of a rechargeable battery is integrated within the outer circumference of the excitation means 20, 30.
- the energy storage 40 is shown only schematically in the illustration for clarity and is to be regarded as installed in the device.
- the device has a signal processing or control electronics 50. With the signal processing or control electronics 50 an incoming signal is processed, for. As an audio signal, and the required electronic power for operating the plunger provided.
- the first excitation means 20 and the second excitation means 30 each have a permanent magnet, each having an annular gap.
- the excitation means 20 and 30 each have an annular plunger coil and at least one oscillating part carrier each.
- the vibration is transmitted to the vibrating part carrier, which is mechanically connected to the plunger coil.
- the oscillating subcarrier is mechanically connected to the transducer structure 11 and transmits the oscillations to the transducer structure 11.
- the first exciter means 20 and the second exciter means 30 comprise a first part 21 of a coupling mechanism and a second part 31 of a coupling mechanism which provides a releasable connection between them Enable excitation means 20, 30 and the transformer structure 11, which lies in between.
- the excitation means oscillate 180 ° out of phase with each other.
- the signal processing or control electronics 50 provides for this phase shift.
- Fig. 2 shows a further plan view of an embodiment of the device according to the invention.
- the extensively extended transformer structure 11 can be pre-assembled in a parent component. Furthermore, the transformer structure 11 can also be part of the superordinate component, ie an integral component.
- a parent component is z.
- the first excitation means 20 and the second excitation means 30 can then be retrofitted via the first part 21 of a coupling mechanism and a second part 31 of a coupling mechanism Fig. 1 be connected to the plastic panel.
- Fig. 3 shows a side view of an embodiment of the device according to the invention.
- the transducer structure 11 has a height of 1 mm to 5 mm above a bearing surface, wherein the total height H of the device is between 2 mm and 10 mm, preferably between 3 mm and 6 mm.
- the central region Z of the transformer structure may have an increase relative to the arms 12 distributed radially around it.
- the first excitation means 20 and the second excitation means 30 are advantageously arranged in the central region Z, the transmitter structure 11 being arranged between the two excitation means 20 and 30.
Abstract
Die Erfindung betrifft eine Vorrichtung zur Anregung von Schwingungen in einer anzuregenden sternförmigen flächig ausgedehnten Übertragerstruktur. Insbesondere kann die Vorrichtung in einem Lautsprecher zur Wiedergabe von Audiosignalen eingesetzt werden. Die Vorrichtung weist mindestens zwei Anregungsmittel auf, welche jeweils mindestens einen Dauermagneten mit einem Ringspalt, mindestens eine ringförmige Tauchspule und mindestens einen Schwingteilträger aufweisen. Der Schwingteilträger ist an die Übertragerstruktur lösbar gekoppelt, und die Übertragerstruktur ist zwischen zwei Anregungsmitteln angeordnet. The invention relates to a device for excitation of oscillations in a star-shaped surface extensively extended Übertragerstruktur. In particular, the device can be used in a loudspeaker for the reproduction of audio signals. The device has at least two excitation means, each having at least one permanent magnet with an annular gap, at least one annular plunger coil and at least one vibrating part carrier. The oscillatory subcarrier is releasably coupled to the transducer structure, and the transducer structure is disposed between two excitation means.
Description
Die Erfindung betrifft eine Vorrichtung zur Anregung von Schwingungen mit einer anzuregenden vorzugsweise sternförmigen flächig ausgedehnten Übertragerstruktur. Insbesondere kann die Vorrichtung in einem Lautsprecher zur Wiedergabe von Audiosignalen eingesetzt werden. Des Weiteren betrifft die Erfindung mögliche Verwendungen einer solchen Vorrichtung.The invention relates to a device for excitation of oscillations with a preferably star-shaped planar extensively distributed transformer structure. In particular, the device can be used in a loudspeaker for the reproduction of audio signals. Furthermore, the invention relates to possible uses of such a device.
Aus der
Aus der
Ein Nachteil an den genannten Lösungen ist die relativ kleine Leistungsdichte der Lautsprecher, die auf die schallgebende Fläche übertragbar ist.A disadvantage of the solutions mentioned is the relatively small power density of the speakers, which is transferable to the sound-emitting surface.
Meist werden Anregungselemente oder zumindest ein Teil davon, z. B. der Kopplungsring, zur Fixierung an die schallgebenden Flächen geklebt. Das führt zu einer aufwendigen Montage mit erhöhter Fehlerwahrscheinlichkeit bei der Ausrichtung und Fixierung.Most are excitation elements or at least part of it, z. B. the coupling ring, glued for fixing to the sound-emitting surfaces. This leads to a complex assembly with increased error probability in the alignment and fixation.
Ein weiterer Nachteil ist, dass solche Flächenmembranlautsprecher meist eine große Bauform und ein großes Gewicht aufweisen. Dies führt für viele Anwendungen wie z. B. in der Luftfahrt oder im Fahrzeugbau zu erhöhtem Kraftstoffverbrauch und kann sich nachteilig auswirken.Another disadvantage is that such surface diaphragm speakers usually have a large size and a large weight. This leads to many applications such. As in aviation or in vehicle construction to increased fuel consumption and can adversely affect.
Der Erfindung liegt die Aufgabe zugrunde, eine eingangs genannte Vorrichtung und eine entsprechende Verwendung zu schaffen, mit denen Probleme des Standes der Technik gelöst werden können und insbesondere eine leistungsfähige Vorrichtung zur Anregung von Schwingungen mit einer Übertragerstruktur geschaffen werden kann.The invention has for its object to provide an aforementioned device and a corresponding use, with which solved problems of the prior art can be and in particular a powerful device for exciting vibrations with a transformer structure can be created.
Gelöst wird diese Aufgabe durch eine Vorrichtung nach Anspruch 1 sowie Verwendungen nach Anspruch 13, 14 oder 15. Vorteilhafte sowie bevorzugte Ausgestaltungen der Erfindung sind Gegenstand der weiteren Ansprüche und werden im Folgenden näher erläutert. Manche der nachfolgend genannten Merkmale werden nur für eine Vorrichtung oder nur für eine der Verwendungen genannt. Sie sollen aber unabhängig davon sowohl für eine Vorrichtung als auch für eine der Verwendungen unabhängig voneinander und selbstständig gelten können. Der Wortlaut der Ansprüche wird durch ausdrückliche Bezugnahme zum Inhalt der Beschreibung gemacht.This object is achieved by a device according to claim 1 and uses according to claim 13, 14 or 15. Advantageous and preferred embodiments of the invention are the subject of further claims and are explained in more detail below. Some of the features mentioned below are mentioned only for one device or for just one of the uses. However, they should be able to apply independently and independently of each other, both for a device and for one of the uses. The wording of the claims is incorporated herein by express reference.
Bei der Erfindung weist die Vorrichtung eine sternförmige, flächig ausgedehnte Übertragerstruktur auf. Zur möglichst verzerrungsfreien Wiedergabe von Audiosignalen hat sich diese Form der Übertragerstruktur als besonders vorteilhaft erwiesen. Die Übertragerstruktur wird zwischen zwei Anregungsmitteln mit Hilfe eines Kopplungsmechanismus fixiert. Der Kopplungsmechanismus ist insbesondere für Montagezwecke lösbar ausgelegt.In the invention, the device has a star-shaped, extensively extended transformer structure. For the most distortion-free reproduction of audio signals, this form of transformer structure has proven to be particularly advantageous. The transformer structure is fixed between two excitation means by means of a coupling mechanism. The coupling mechanism is designed in particular for mounting purposes detachable.
Die Anregungsmittel weisen mindestens einen Dauermagneten mit einem Ringspalt, mindestens eine ringförmige Tauchspule und mindestens einen Schwingteilträger auf. Die Tauchspule kann mit elektrischem Strom durchflossen werden und erzeugt ein vom Anregungssignal abhängiges elektromagnetisches Wechselfeld, dadurch bewegt sich die Tauchspule im Ringspalt des Dauermagneten. Diese Funktion einer Tauchspule ist dem Fachmann hinreichend bekannt und wird deshalb nicht näher erläutert. Der Schwingteilträger ist mit der Tauchspule mechanisch bzw. konstruktiv verbunden und leitet die Schwingungen weiter.The excitation means have at least one permanent magnet with an annular gap, at least one annular plunger coil and at least one vibrating part carrier. The immersion coil can be traversed by electric current and generates a dependent of the excitation signal electromagnetic alternating field, thereby moving the plunger coil in the annular gap of the permanent magnet. This function of a plunger coil is well known to the skilled person and is therefore not explained in detail. The vibrating part carrier is mechanically or constructively connected to the plunger and passes the vibrations on.
Durch die Vorrichtung mit zwei Anregungsmitteln, die die anzuregende Übertragerstruktur von zwei gegenüberliegenden Seiten anregen, wird eine hohe Leistungsdichte der Schwingungen in der Übertragerstruktur erreicht. Damit sich die Leistung der zwei sich gegenüberliegenden Anregungsmittel addiert, schwingen die Anregungsmittel um 180° phasenverschoben zueinander.The device with two excitation means, which excite the transformer structure to be excited from two opposite sides, achieves a high power density of the oscillations in the transformer structure. In order for the power of the two opposing excitation means to add up, the excitation means oscillate 180 ° out of phase with each other.
In einer vorteilhaften Ausgestaltung der Erfindung ist die Vorrichtung derart ausgelegt, dass Schwingungen mit Frequenzen im hörbaren Bereich des menschlichen Gehörs angeregt werden können. Vorzugsweise liegen diese Frequenzen zwischen 15 Hz und 20 kHz.In an advantageous embodiment of the invention, the device is designed such that vibrations with frequencies in the audible range of human hearing can be excited. Preferably, these frequencies are between 15 Hz and 20 kHz.
Zum Betrieb der Anregungsmittel benötigt man elektronische Schaltungen wie Treiber, Verstärker etc. Die elektronischen Schaltungen sind in einer bevorzugten Ausführung der Erfindung in mindestens einem der Anregungsmittel integriert. Dadurch wird der benötigte Bauraum der Vorrichtung gering gehalten und die Vorrichtung lässt sich relativ flach realisieren.The operation of the excitation means requires electronic circuits such as drivers, amplifiers, etc. The electronic circuits are integrated in at least one of the excitation means in a preferred embodiment of the invention. As a result, the required installation space of the device is kept low and the device can be realized relatively flat.
Zum Betrieb der Anregungsmittel benötigt man elektrische Energie, um z. B. die Tauschspulen mit elektrischem Strom zu versorgen. Eine weitere vorteilhafte Ausführungsform der Erfindung sieht deshalb vor Energiespeicher in Form von mindestens einer Batterie und/oder mindestens eines Akkumulators in mindestens eines der Anregungsmittel zu integrieren. Ein Energiespeicher kann auch durch beide Anregungsmittel hindurch verlaufen, so dass er genügend Stauraum hat und ausreichend groß sein kann.To operate the excitation means requires electrical energy to z. B. to supply the exchange coils with electric current. A further advantageous embodiment of the invention therefore envisages integrating energy storage in the form of at least one battery and / or at least one accumulator into at least one of the excitation means. An energy store can also run through both excitation means, so that it has sufficient storage space and can be sufficiently large.
Um eine Zerstörung und/oder Fehlfunktionen der Vorrichtung zu vermeiden muss die beim Betrieb der Vorrichtung entstehende Wärme aus der Vorrichtung abgeführt werden. Dies geschieht in einer weiteren vorteilhaften Ausführungsform der Erfindung über aus kohlenstofffaserverstärktem Kunststoff bestehende, federartige Elemente, die die entstehende Wärme auf die angeregte Übertragerstruktur weiterleiten. Dort kann die Wärme großflächig verteilt und an die Umgebung abgegeben werden. Idealerweise kann dann auf das bisher im Stand der Technik eingesetzte Ferrofluid verzichtet werden. Durch den Verzicht auf Ferrofluid lässt sich die Vorrichtung erheblich preisgünstiger herstellen und Verschmutzungen werden verhindert.In order to avoid destruction and / or malfunction of the device, the heat generated during operation of the device must be removed from the device. This is done in a further advantageous embodiment of the invention over existing from carbon fiber reinforced plastic, spring-like elements that forward the resulting heat to the excited transformer structure. There, the heat can be distributed over a large area and released to the environment. Ideally, then can be dispensed with the ferrofluid used in the prior art. By dispensing with ferrofluid, the device can be produced significantly cheaper and soiling is prevented.
In einer weiteren vorteilhaften Ausführungsform der Erfindung ist die Übertragerstruktur aus kohlenstofffaserverstärktem Kunststoff. Dies hat sich als besonders vorteilhaft erwiesen, da kohlenstofffaserverstärkter Kunststoff eine hohe Steifigkeit aufweist, woraus besonders gute Schwingungsübertragungseigenschaften hervorgehen.In a further advantageous embodiment of the invention, the transformer structure is made of carbon fiber reinforced plastic. This has proven to be particularly advantageous because carbon fiber reinforced plastic has a high rigidity, resulting in particularly good vibration transmission properties.
In einer weiteren vorteilhaften Ausführungsform der Erfindung weist die Vorrichtung mehrere getrennte Anordnungen bestehend aus jeweils einem Dauermagnet, der jeweils einen Ringspalt aufweist, und jeweils einer Tauchspule für verschiedene Frequenzbereiche der anzuregenden Schwingungen auf. Damit kann die Schallleistung für verschiedene Frequenzen auf die jeweils getrennten Anordnungen aufgeteilt werden. So können die verschiedenen Eigenschaften der Anordnungen für verschiedene Frequenzen optimiert werden.In a further advantageous embodiment of the invention, the device has a plurality of separate arrangements consisting of a respective permanent magnet, each having an annular gap, and in each case a plunger coil for different frequency ranges of the vibrations to be excited. Thus, the sound power for different frequencies can be divided into the respective separate arrangements. Thus, the different properties of the arrangements for different frequencies can be optimized.
In einer weiteren vorteilhaften Ausführungsform der Erfindung weist die Vorrichtung mindestens einen Dauermagneten, der mindestens einen Ringspalt aufweist, und mindestens eine ringförmige Tauchspule auf, welche zur induktiven Erzeugung von elektrischer Energie aus der Schwingung der Übertragerstruktur verwendet werden können. Damit lässt sich aus einer externen Anregung der Übertragerstruktur elektrische Energie gewinnen. Weiterhin kann die Vorrichtung mindestens eine Spule zur induktiven Einkopplung von elektrischer Energie aufweisen. Diese Spule kann eine der Tauchspulen sein, kann aber auch eine separate Spule sein.In a further advantageous embodiment of the invention, the device comprises at least one permanent magnet, which has at least one annular gap, and at least one annular plunger coil, which for the inductive generation of electrical energy from the Vibration of the transformer structure can be used. This can be obtained from an external excitation of the transformer structure electrical energy. Furthermore, the device may have at least one coil for the inductive coupling of electrical energy. This coil may be one of the immersion coils, but may also be a separate coil.
In einer weiteren Ausführungsform der Erfindung wird die gewonnene elektrische Energie vorteilhafterweise in einen Energiespeicher in Form eines Akkumulators gespeichert, welcher bereits in der Vorrichtung integriert ist.In a further embodiment of the invention, the recovered electrical energy is advantageously stored in an energy store in the form of a rechargeable battery, which is already integrated in the device.
In einer weiteren vorteilhaften Ausführungsform der Erfindung weist die flächig ausgedehnte Übertragerstruktur mehrere Arme auf, die um einen Zentralbereich radial verteilt angeordnet sind, das kann eine Sternform ergeben. Es hat sich als besonders vorteilhaft erwiesen, 6 Arme zu verwenden. Die Längen der Arme liegen typischerweise im Bereich von 3 cm bis 50 cm, wobei vorteilhaft 6 die Arme jeweils eine unterschiedliche Länge aufweisen.In a further advantageous embodiment of the invention, the extensively extended Übertragerstruktur a plurality of arms which are arranged distributed radially around a central region, which can give a star shape. It has proven to be particularly advantageous to use 6 arms. The lengths of the arms are typically in the range of 3 cm to 50 cm, advantageously 6 each having a different length.
Die Breite der Arme liegt vorzugsweise im Bereich 5 mm bis 50 mm, die Höhe der Arme vorteilhaft im Bereich 1 mm bis 5 mm. Der Zentralbereich und die davon ausgehenden Arme spannen dabei vorteilhaft eine Fläche von 20 cm2 bis 8000 cm2 auf.The width of the arms is preferably in the range 5 mm to 50 mm, the height of the arms advantageously in the range 1 mm to 5 mm. The central area and the arms extending therefrom advantageously span an area of 20 cm 2 to 8000 cm 2 .
Die Übertragerstruktur kann eine Höhe von 1 mm bis 5 mm über einer Auflagefläche aufweisen, wobei die Gesamthöhe der Vorrichtung zwischen 2 mm und 10 mm liegen kann.The transformer structure may have a height of 1 mm to 5 mm over a support surface, wherein the total height of the device may be between 2 mm and 10 mm.
Der Zentralbereich der Übertragerstruktur kann eine Erhöhung gegenüber den radial um den Zentralbereich verteilten Armen aufweisen. Die Anregungsmittel sind vorteilhaft im Zentralbereich angeordnet, wobei die Übertragerstruktur zwischen zwei Anregungsmitteln angeordnet ist, einer drüber und einer drunter.The central region of the transformer structure may have an increase relative to the arms distributed radially around the central region. The excitation means are advantageously arranged in the central area, the transmitter structure being arranged between two excitation means, one above and one below.
Die Vorrichtung kann in vorteilhaft als Lautsprecher zur Wiedergabe von Audiosignalen wie Musik oder Sprachdurchsagen verwendet werden.The device can be advantageously used as a loudspeaker for reproducing audio signals such as music or voice announcements.
Aufgrund der kompakten Bauweise und der durch die einfache Montage ist die Vorrichtung für Verwendungen in Kraftfahrzeugen, Luftfahrzeugen und/oder Raumfahrzeugen geeignet.Due to the compact design and the ease of assembly, the device is suitable for use in motor vehicles, aircraft and / or spacecraft.
In einer weiteren Ausführungsform der Erfindung sind ein Teil des Kopplungsmechanismus zwischen dem Schwingteilträger und der Übertragerstruktur und die Übertragerstruktur in einem übergeordneten Bauteil angeordnet. Dies kann z. B. dadurch geschehen, dass ein Teil des Kopplungsmechanismus und die Übertragerstruktur in einem Kunststoffteil wie z. B. eine Innenraumverkleidung eines Flugzeuges oder Autos während der Fertigung eingebaut werden oder ein Teil dessen sein können. Die Anregungsmittel können dann anschließend aufgebracht werden, wodurch Fertigungszeit eingespart, die Justierung vereinfacht und eine einfache Austauschbarkeit gewährleistet wird.In a further embodiment of the invention, a part of the coupling mechanism between the vibrating member carrier and the transformer structure and the transformer structure are in one arranged parent component. This can be z. B. happen that a part of the coupling mechanism and the transformer structure in a plastic part such. For example, an interior trim panel of an airplane or car may be incorporated during manufacture or may be part of it. The excitation means can then be applied subsequently, which saves manufacturing time, simplifies the adjustment and ensures easy interchangeability.
Diese und weitere Merkmale gehen außer aus den Ansprüchen auch aus der Beschreibung und den Zeichnungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombinationen bei einer Ausführungsform der Erfindung und auf anderen Gebieten verwirklicht sein und vorteilhafte sowie für sich schutzfähige Ausführungen darstellen können, für die hier Schutz beansprucht wird. Die Unterteilung der Anmeldung in einzelne Abschnitte sowie Zwischenüberschriften beschränken die unter diesen gemachten Aussagen nicht in ihrer Allgemeingültigkeit.These and other features will become apparent from the claims but also from the description and drawings, wherein the individual features each alone or more in the form of sub-combinations in an embodiment of the invention and in other fields be realized and advantageous and protectable Represent embodiments for which protection is claimed here. The subdivision of the application into individual sections and subheadings does not limit the statements made thereunder in their generality.
Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im Folgenden näher erläutert. In den Zeichnungen zeigen:
- Fig. 1
- eine Schrägansicht einer erfindungsgemäßen Ausführungsform der Vorrichtung,
- Fig. 2
- eine Schrägansicht einer weiteren erfindungsgemäßen Ausführungsform der Vorrichtung und
- Fig. 3
- eine Seitenansicht einer weiteren erfindungsgemäßen Ausführungsform der Vorrichtung.
- Fig. 1
- an oblique view of an embodiment of the device according to the invention,
- Fig. 2
- an oblique view of another embodiment of the device according to the invention and
- Fig. 3
- a side view of another embodiment of the device according to the invention.
Das erste Anregungsmittel 20 und das zweite Anregungsmittel 30 weisen eine runde Form auf. Der Außenumfang des ersten und zweiten Anregungsmittels 20 und 30 ist jeweils nicht größer als der Umfang des Zentralbereichs der Übertragerstruktur 11.The first excitation means 20 and the second excitation means 30 have a round shape. The outer circumference of the first and second excitation means 20 and 30 is each no larger than the circumference of the central region of the
In der Vorrichtung ist ein Energiespeicher 40 in Form eines Akkumulators innerhalb des Außenumfangs der Anregungsmittel 20, 30 integriert. Der Energiespeicher 40 ist in der Darstellung zur besseren Übersichtlichkeit nur schematisch dargestellt und ist als in der Vorrichtung verbaut zu betrachten. Ebenfalls schematisch dargestellt und als in einem oder beidem der Anregungsmittel 20 oder 30 verbaut zu betrachten weist die Vorrichtung eine Signalverarbeitungs- bzw. Ansteuerelektronik 50 auf. Mit der Signalverarbeitungs- bzw. Ansteuerelektronik 50 wird ein ankommendes Signal verarbeitet, z. B. ein Audio Signal, und der benötigte elektronische Strom zum Betrieb der Tauchspule bereitgestellt. Durch die Integration des Energiespeichers 40 und der Signalverarbeitungs- bzw. Ansteuerelektronik 50 innerhalb des Außenumfangs der Anregungsmittel wird der benötigte Bauraum der Vorrichtung gering gehalten und die Vorrichtung lässt sich relativ flach realisieren. Vor allem dadurch wird der Platzbedarf reduziert.In the device, an
Das erste Anregungsmittel 20 und das zweite Anregungsmittel 30 weisen jeweils einen Dauermagneten auf, der jeweils einen Ringspalt aufweist. Außerdem weisen die Anregungsmittel 20 und 30 jeweils eine ringförmige Tauchspule und mindestens jeweils einen Schwingteilträger auf. Wenn die Tauchspulen mit Strom durchflossen werden erzeugen sie auf bekannte Art und Weise ein elektromagnetisches Wechselfeld, welches sie im Magnetfeld der Dauermagneten schwingen lässt. Die Schwingung wird auf den Schwingteilträger übertragen, welcher mit der Tauchspule mechanisch verbunden ist. Der Schwingteilträger wiederum ist mit der Übertragerstruktur 11 mechanisch verbunden und überträgt die Schwingungen auf die Übertragerstruktur 11. Das erste Anregungsmittel 20 und das zweite Anregungsmittel 30 weisen einen ersten Teil 21 eines Kopplungsmechanismus und einen zweiten Teil 31 eines Kopplungsmechanismus auf, welche eine lösbare Verbindung zwischen den Anregungsmitteln 20, 30 und der Übertragerstruktur 11 ermöglichen, die dazwischen liegt.The first excitation means 20 and the second excitation means 30 each have a permanent magnet, each having an annular gap. In addition, the excitation means 20 and 30 each have an annular plunger coil and at least one oscillating part carrier each. When current flows through the plunger coils, they generate, in a known manner, an electromagnetic alternating field which causes them to oscillate in the magnetic field of the permanent magnets. The vibration is transmitted to the vibrating part carrier, which is mechanically connected to the plunger coil. The oscillating subcarrier, in turn, is mechanically connected to the
Damit sich die Leistung der zwei sich gegenüberliegenden Anregungsmittel addiert, schwingen die Anregungsmittel um 180° phasenverschoben zueinander. Die Signalverarbeitungs- bzw. Ansteuerelektronik 50 sorgt für diese Phasenverschiebung.In order for the power of the two opposing excitation means to add up, the excitation means oscillate 180 ° out of phase with each other. The signal processing or
Claims (15)
dadurch gekennzeichnet, dass
die Übertragerstruktur zwischen den zwei Anregungsmitteln angeordnet ist.Apparatus for exciting vibrations in a transducer structure to be excited and extensively extended with a transformer structure and at least two excitation means, each having
characterized in that
the transmitter structure is arranged between the two excitation means.
Applications Claiming Priority (1)
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DE102016226006.5A DE102016226006A1 (en) | 2016-12-22 | 2016-12-22 | Device for exciting vibrations and use of such a device |
Publications (2)
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EP3340650A2 true EP3340650A2 (en) | 2018-06-27 |
EP3340650A3 EP3340650A3 (en) | 2018-08-29 |
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EP17206899.1A Withdrawn EP3340650A3 (en) | 2016-12-22 | 2017-12-13 | Device for stimulating vibrations and use of such a device |
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EP (1) | EP3340650A3 (en) |
DE (1) | DE102016226006A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018211426A1 (en) * | 2018-07-10 | 2020-01-16 | Faurecia Innenraum Systeme Gmbh | Acoustic panel for optimal transmission of sound frequencies and method of manufacturing the same |
FR3118265A1 (en) * | 2020-12-17 | 2022-06-24 | Renault S.A.S. | Coupling bridge for the transmission of vibrations in a solid-state acoustic device intended for a motor vehicle. |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019211778B4 (en) | 2019-08-06 | 2021-08-19 | Innfa Gmbh | Transmitter Structure, Apparatus, and Use of a Transmitter Structure or Apparatus |
DE102020104114A1 (en) | 2020-02-17 | 2021-08-19 | Faurecia Innenraum Systeme Gmbh | Fairing part and fairing assembly |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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US6519349B1 (en) * | 1995-09-02 | 2003-02-11 | New Transducers Limited | Loudspeaker |
UA51671C2 (en) * | 1995-09-02 | 2002-12-16 | Нью Транзд'Юсез Лімітед | Acoustic device |
EP2178307B1 (en) * | 1998-01-16 | 2013-11-27 | Sony Corporation | Speaker apparatus and electronic apparatus having speaker apparatus enclosed therein |
US20020021812A1 (en) * | 2000-08-11 | 2002-02-21 | Graham Bank | Loudspeaker |
US7447322B2 (en) * | 2004-01-13 | 2008-11-04 | Brookstone Purchasing, Inc. | Speaker having a transparent panel |
KR100651766B1 (en) * | 2004-10-18 | 2006-12-01 | 김성배 | Magnetic Circuit Having Dual Magnets, Speaker and Vibration Generating Apparatus Using the Same |
DE102006031433B4 (en) | 2006-07-05 | 2011-06-22 | ELAC Electroacustic GmbH, 24113 | Exciter for area diaphragm loudspeakers |
CN101911726B (en) | 2008-01-04 | 2014-04-02 | 空中客车作业有限公司 | Oscillator for a flat loudspeaker, flat loudspeaker and vehicle |
-
2016
- 2016-12-22 DE DE102016226006.5A patent/DE102016226006A1/en not_active Withdrawn
-
2017
- 2017-12-13 EP EP17206899.1A patent/EP3340650A3/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018211426A1 (en) * | 2018-07-10 | 2020-01-16 | Faurecia Innenraum Systeme Gmbh | Acoustic panel for optimal transmission of sound frequencies and method of manufacturing the same |
FR3118265A1 (en) * | 2020-12-17 | 2022-06-24 | Renault S.A.S. | Coupling bridge for the transmission of vibrations in a solid-state acoustic device intended for a motor vehicle. |
Also Published As
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DE102016226006A1 (en) | 2018-06-28 |
EP3340650A3 (en) | 2018-08-29 |
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