CN107847980A - The electroacoustic transducer that distance with deviation sound direction is added - Google Patents
The electroacoustic transducer that distance with deviation sound direction is added Download PDFInfo
- Publication number
- CN107847980A CN107847980A CN201680043130.0A CN201680043130A CN107847980A CN 107847980 A CN107847980 A CN 107847980A CN 201680043130 A CN201680043130 A CN 201680043130A CN 107847980 A CN107847980 A CN 107847980A
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- motor
- diaphragm
- electroacoustic transducer
- transducer according
- stacking
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- 230000008859 change Effects 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 239000000725 suspension Substances 0.000 claims description 16
- 238000005452 bending Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
- B06B1/0611—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements in a pile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/521—Constructional features
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
- G10K9/22—Mountings; Casings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
- G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
It is proposed a kind of electroacoustic transducer (1) for being used to carry out environment detection in the instrument of travelling forward.The electroacoustic transducer includes diaphragm (4) and the first motor (3), wherein, the diaphragm (4) is provided for vibrating in preferred orientations (P1), and the motor (3) has the stacking being made up of the member motor independently connected, the member motor is arranged in response to inciding acoustical signal on the diaphragm (4) and/or causing the length change being stacked on driving direction (P2) in response to the electric signal being applied on first motor (3), wherein, the driving direction (P2) is differently oriented with the preferred orientations (P1).
Description
Technical field
The present invention relates to a kind of electroacoustic transducer for being used to carry out environment detection in the instrument of travelling forward.The present invention is especially
It is related to a kind of improved coupling of motor and diaphragm, for improving the acoustical power of radiation.
Background technology
One kind " thickness vibration device " (Dickenschwinger) well known in the art, it is by stacking (English：
" Stack ") worked relative to the face (" diaphragm ") for carrying out acoustic radiation.Here, in known arrangement commonly, it is necessary to always make
Compare high mass motion (vibration accelerates).Quality to be accelerated largely together decides on resonant frequency, and only
High efficiency could be realized in the case of system resonance.
It is further known that in the case where mechanical series are arranged, electroacoustic transducer, such as piezoelectric ceramics mechanical deflection
It is added.An example to this be so-called piezo-electric stack (it is multiple it is very thin, separately from each other by the piezoelectric element of electrode separation,
The piezoelectric element stacks in succession in a common direction).
The content of the invention
The task of the present invention is, improves the efficiency of the electroacoustic transducer according to background technology.The task of the present invention is especially
It is, reduces the quality vibrated on acoustic radiation direction of electroacoustic transducer.
According to the present invention, task indicated above solves by the electroacoustic transducer of the feature with claim 1.Electricity
Acoustical convertor is used to carry out environment detection in the instrument of travelling forward, and can for example be used as ultrasonic transmitters or ultrasound for this
Receiver is used as ultrasonic transmitter-receiver configuration.The electroacoustic transducer includes diaphragm, and the diaphragm arrangement is used for corresponding to hair
Vibrated in the preferred orientations of the main radiation direction for the acoustical signal sent.First motor is (depending on action direction also referred to as " generator "
Or " acoustical-electrical transducer ") be provided for encouraging diaphragm vibration or electric signal will be converted to by power caused by sound.Motor has
The stacking for the member motor (Elementarmotor) independently connected, wherein, the stacking is stacked in the driven direction, should
Driving direction is differently oriented with preferred orientations.In other words, in the case where sending acoustical signal, first with stacking edge driving side
To length change cause electric alternating signal, the electric alternating signal ultimately results in diaphragm in above-mentioned preferred orientations
(Vorzugsrichtung) deflection on.On the contrary, the acoustical signal incided on diaphragm is converted to the diaphragm in preferred orientations
Vibration, wherein, diaphragm vibration causes the length change of the stacking of motor in the driven direction.By this way, motor or stacking
Path increment of the stroke in principle with diaphragm in the preferred direction it is unrelated.Therefore, as long as the stroke of diaphragm, which is more than, is stacked on driving
Corresponding stroke on direction, then the stroke of diaphragm is based on corresponding to transmission ratio reduction in the acoustic mass of motor internal vibration.
This can realize higher efficiency under sound change over condition and bigger in the case of the resonant frequency of selection electroacoustic transducer
The free degree.
Dependent claims show the preferred extension of the present invention.
First motor can for example be coupled by lever with diaphragm.Lever can for example be configured as at least in part preferred
The element protruded on direction from diaphragm, the distal end for making the lever by motor are moved in the driven direction.Lever surrounds its (example
As on diaphragm and/or on housing) rotation of anchor point causes the deflection of diaphragm in the preferred direction now.
First motor can be arranged on the suspension part of diaphragm.The suspension part of diaphragm can be configured as facilitating part
(Vermittlungsst ü ck) (such as including groove), this facilitates part to be provided for facilitating diaphragm relative to electroacoustic transducer
The motion of fixed shell.For example it can be changed in terms of the length of suspension part by the first motor so that suspension part
(verstemmen) is crammed between the fixed part and diaphragm of electroacoustic transducer and therefore realizes diaphragm in the preferred direction
Lifting or reduction.Alternatively or additionally, motor can be responsible for the bending of suspension part, and thus diaphragm is raised or lowered again.
Suspension part can have the angle for being not equal to 0 ° or 90 ° or 180 ° of the principal spread direction on diaphragm, and especially
Its partially around or surround diaphragm.If the length of suspension part changes, one side motor is at the housing of electroacoustic transducer
Anchor point and the distance between the diaphragm of another aspect also change.Therefore, diaphragm is caused with cyclical signal excitation motor
Repeat to deflect, the amount of deflection for repeating deflection is more than the corresponding length change amount of motor.The face normal of suspension part and diaphragm
Caused angular region for example may be between 5 ° to 45 ° between the normal of face, be preferably between 10 ° to 35 °.In above range
In, safety in operation and improved efficiency are extra high.
First motor can for example have the ring disk shape, and it is particularly suitable for accommodating discoid diaphragm at its center.The
The member motor of one motor for example may be constructed the piezoelectric ring that diameter reduces on diaphragm direction.Carried out between each piezoelectric ring
Electrically connect and encourage, or enter row energization in case of reception.This motor for example can be used as stacked rings or stacked tubes to manufacture,
Then it is cut to disk.Such as member motor can be applied on the side of support column so that be removed it in support column
After produce hollow bar.Next or hollow cylinder is cut into disk by can before support column is removed, it follows that motor
Optional column.
Diaphragm can for example be made by metal (such as aluminium) or by plastics (especially fibrous composite).
In the purpose for transmission respectively with voltage-drop loading member motor as high as possible so as to during producing range,
The reception of acoustical signal is carried out preferably by the series circuit of member motor, to be amplified to the signal voltage of acquisition.Therefore,
According to the device of reality, transformer can not be used, because follow-up analysis can also be realized in the case of no transformer
The range of sensitivity of process circuit.In order to during the parallel connection excitement and receive process to member motor during transmission process
(vermitteln) is mediated between being added by voltage caused by the series circuit of member motor, switch can be set to fill
Put, the switching device is switched to element after measurement signal is successfully transmitted by the parallel circuit (difference is electrically) of member motor
The series circuit of motor.For the electroacoustic transducer according to configuration of the present invention, transformer is not used to realize further
Weight saving and cost savings.
Electroacoustic transducer can preferably include housing and connect rubber.Housing can be understood as electroacoustic transducer substantially
Fixed (non-resonant) support unit.Rubber is connected to be provided for producing mechanical pretension between housing and the first motor.Class
As, especially during mechanical pretension is produced, connection rubber can also facilitate electrically connecting for the electric connecting terminal of the first motor.First
Being mechanically fixed for motor can also be realized by connecting rubber.This simplifies the installation of the electroacoustic transducer according to the present invention.
Alternatively, electroacoustic transducer can have the second motor, and second motor can be arranged in together with the first motor
On the common seamed edge of diaphragm.By this way, the horse on diaphragm for acting on electroacoustic transducer under substantially the same stroke
It is added up to power.Alternatively, the first motor can be arranged opposite to each other with the second motor on the center of diaphragm.By this way,
In the case where carrying out two motors with mutually manipulating, the deflection perpendicular to its principal spread direction of diaphragm is produced.With this side
Formula, acoustic streaming (Schallfluss) can be improved.
Preferably, electroacoustic transducer also has the 3rd motor, wherein, three motors are especially true on diaphragm arrangement, make
Obtain them and be offset from one another 120 ° respectively about the midpoint of diaphragm.The use of three motors improves the electric work of electroacoustic transducer again
Rate, and improve and receive in the manipulation (such as aligned acoustic radiation) of diaphragm and signal (such as it is specific for direction
Environment detection) in the case of the free degree.
Preferably, the 4th motor is additionally provided with acoustical-electrical transducer, wherein, or four motors with star (respectively with
90 °) it is offset from one another around the midpoint of diaphragm, otherwise it is arranged opposite to each other in couples.The use of four motors improves electroacoustic again
The electrical power of converter, and can realize using less motor to improve the same acoustical power radiated.In addition, in failure
In the case of, can partly it remain on.
Member motor electrically connecting inside motor for example can so be carried out so that two extended in the driven direction
Electric conductor is electrically coupled by the interconnection (Stichleitung) between passing perpendicularly through member motor with member motor.Here, will
One in conductor is connected to the interconnection that couple of side for being oriented front side with member motor, and by another conductor and with
The interconnection connection of the back side side coupling of member motor.This structural form can also be by using referred to as " being laminated "
(Laminieren) building method manufactures.Electrically connected in this way it is possible to particularly simply realize.
Two electric conductors extended in the driven direction can have corresponding connection end, and the connection end is used for signal source
Electrically connect.Such as this connection end can be embodied as socket connection end or cutting/clamping connection (Schneid-/
Klemmverbindung) and/or the sealed connection (such as welding) of material form.
Brief description of the drawings
Embodiments of the invention are described in detail referring to the drawings.In the accompanying drawings：
Fig. 1 shows the instrument that travels forward with electroacoustic transducer being equipped with according to the present invention
(Fortbewegungsmittel) schematic diagram of embodiment；
Fig. 2 shows the first sectional view of the first embodiment of the electroacoustic transducer according to the present invention；
Fig. 3 shows the first sectional view of the second embodiment of the electroacoustic transducer according to the present invention；
Fig. 4 schematically shows the top view of the motor of loop configurations；
Fig. 5 a show the top view of the 3rd embodiment of the electroacoustic transducer according to configuration of the present invention；
Fig. 5 b show the sectional view of the 3rd embodiment of the electroacoustic transducer by being shown in Fig. 5 a.
Embodiment
Fig. 1 is shown as the car 10 for the instrument of travelling forward, and is located at this forward according to the electroacoustic transducer 1 of configuration of the present invention
In the front bumper of tool movement, the electroacoustic transducer is connected to by information technology is used as the control of analysis and processing unit and sets
On standby 2.Electroacoustic transducer 1 is provided for being loaded with electric signal by control device 2, so as to which corresponding measurement signal is sent
Into the surrounding environment of car 10, on the other hand, so as to which (such as reflection) for being received from surrounding environment acoustical signal is changed
For electric signal and provide it to control device 2.
Fig. 2 shows the sectional view of the first embodiment by the electroacoustic transducer 1 according to configuration of the present invention, electroacoustic conversion
Utensil has the diaphragm 4 being tensioned on housing 5.The diaphragm arrangement be used on preferred orientations P1 vibration while radiation sound or
Receive acoustical signal.Lever 8 protrudes on the direction of preferred orientations P1 orientations is arranged essentially parallel to from diaphragm 4.In the end of lever 8
Motor 3 is disposed between housing 5, the motor has the piezoelectric element 14 as member motor, and the piezoelectric element is driving
Stacked in succession on the P2 of direction.It can be responsible for by the electric signal that voltage source 13 is applied on piezoelectric element 14 by electric lead 11,12
Motor 3 correspondingly extends or shunk, and thus encourages diaphragm 4 to be vibrated on the P1 of direction.Diaphragm 4 it is relative on housing 5 with lever
The element 6 put and the cavity in housing 57 form shape sealed together, and thus, diaphragm 4 and motor 3 are all regularly
It is connected with housing 5.The end opposite with lever 8 of motor 3 is extend into the cavity inside housing 5, and therefore also shape
Lock and be fixed in electroacoustic transducer 1.
Fig. 3 shows the replacement device of the motor 3 between lever 8 and housing 5, wherein, arranged between motor 3 and housing 5
Have and connect rubber 9.On the one hand, connect rubber 9 and be responsible for lasting mechanical pretension, on the other hand, connection rubber 9 gets out electricity and connect
It is logical, it is described to electrically connect to the electric signal on the transmission electric lead 11,12 of motor 3 or transmit the telecommunications on electric lead 11,12 from motor 3
Number.
Fig. 4 shows the embodiment of the ring disk shape motor 3, and the motor is around discoid diaphragm 4.The piezoelectric element 14 of ring-type
Around diaphragm 4 central concentric arrange, and be electrically connected to each other by the electrode 18,19 of same ring-type.Shown motor 3
Manufacture can so be carried out as described by starting so that manufacture corresponding hollow cylinder first, it is then that this is hollow
Cylinder cuts into the section of the ring disk shape.
Fig. 5 a show the rectangle diaphragm 4 in rectangular housing 5.Two are disposed between housing 5 and the first seamed edge 16 of diaphragm 4
Individual motor 3.In the corresponding way, it is disposed with two other motor 3 between housing 5 and the second seamed edge 17 of diaphragm 4.Diaphragm 4
The seamed edge for being arranged in image upper and lower part be designed to (freischwingend) of free vibration, so as not to damage electroacoustic
The efficiency of converter 1.
Fig. 5 b show the section of the embodiment shown in Fig. 5 a.Diaphragm 4 is provided for vibrating on preferred orientations P1.For
This, the diaphragm is fixed on housing 5 in its both sides by suspension part 15.Suspension part 15 passes through groove (Sticke) 20 and diaphragm 4
Or mechanically (with especially going back Fluid Sealing) it is connected with housing 5.Motor 3 is with the face of suspension part 15 be bonded.Motor 3 is in respective direction
Extension on P2, P3 causes the corresponding elongation and bending of suspension part 15, and thus, diaphragm 4 is elevated on P1 directions.Suspension part
15 have the principal spread direction relative to diaphragm 4 with the principal spread direction of about 30 ° of angle tilt.By this way, in motor 3
Stroke and diaphragm 4 stroke between produce and transmit ratio, this improves radiated acoustical power.
Claims (10)
1. a kind of electroacoustic transducer (1), it is used to carry out environment detection, the electroacoustic transducer in the instrument of travelling forward (10)
Including：
Diaphragm (4),
First motor (3),
Wherein, the diaphragm (4) is provided for vibrating in preferred orientations (P1), and the motor (3), which has, independently connects
Member motor (14) stacking, the member motor be arranged in response to incide acoustical signal on the diaphragm (4) and/or
Cause the length being stacked on driving direction (P2) in response to the electric signal (13) being applied on first motor (3)
Change, wherein, the driving direction (P2) is differently oriented with the preferred orientations (P1).
2. electroacoustic transducer according to claim 1, wherein, first motor (3) passes through lever (8) and the diaphragm
(4) couple.
3. electroacoustic transducer according to claim 1 or 2, wherein, first motor (3) is arranged in the diaphragm (4)
Suspension part (15) on.
4. electroacoustic transducer according to claim 3, wherein, first motor (3) is provided for causing the suspension
The length change in portion (15) and/or bending.
5. the electroacoustic transducer according to any one of the claims, wherein, the suspension part (15) has face normal,
The face normal has different directions compared with the face normal of the diaphragm (4).
6. the electroacoustic transducer according to any one of the claims, wherein, first motor (3) has the ring disk shape
Shape, and especially equidistantly around the center of the diaphragm (4).
7. the electroacoustic transducer according to any one of the claims, wherein, the electroacoustic transducer (1) also has shell
Body (5) with connect rubber (9),
Wherein, the connection rubber (9) facilitates electrically connecting for the first motor (3), and arranges, especially fixes to clamp in institute
State between the end of stacking and the housing (5).
8. the electroacoustic transducer according to any one of the claims, it also includes the second motor (3), wherein, it is described
First motor (3) is arranged on the common seamed edge (16,17) of the diaphragm (4) with second motor (3), or on the film
The center of piece (4) is arranged opposite to each other.
9. electroacoustic transducer according to any one of claim 1 to 7, it also includes
Second motor (3),
3rd motor (3),
Wherein, first motor (3), second motor (3) and the 3rd motor (3) surround the diaphragm with star
(4) arrange.
10. electroacoustic transducer according to any one of claim 1 to 7, it also includes：
Second motor (3),
3rd motor (3),
4th motor (3), wherein, first motor (3), second motor (3), the 3rd motor (3) and described
The rib put toward each other in the diaphragm (4) is arranged or be arranged in pairs with star to 4th motor (3) around the diaphragm (4)
On side (16,17).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015213813.5A DE102015213813A1 (en) | 2015-07-22 | 2015-07-22 | Electro-acoustic transducer with path addition away from the sound direction |
| DE102015213813.5 | 2015-07-22 | ||
| PCT/EP2016/063746 WO2017012787A1 (en) | 2015-07-22 | 2016-06-15 | Electroacoustic converter with a travel addition away from the sound direction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107847980A true CN107847980A (en) | 2018-03-27 |
| CN107847980B CN107847980B (en) | 2021-06-22 |
Family
ID=56194457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680043130.0A Active CN107847980B (en) | 2015-07-22 | 2016-06-15 | Electroacoustic transducer with path summation deviating from acoustic direction |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3325179A1 (en) |
| CN (1) | CN107847980B (en) |
| DE (1) | DE102015213813A1 (en) |
| WO (1) | WO2017012787A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050179339A1 (en) * | 2003-06-02 | 2005-08-18 | Ambient Systems, Inc. | Electromechanical assemblies using molecular-scale electrically conductive and mechanically flexible beams and methods for application of same |
| US20070090723A1 (en) * | 2003-03-31 | 2007-04-26 | Keolian Robert M | Thermacoustic piezoelectric generator |
| CN201383870Y (en) * | 2009-01-19 | 2010-01-13 | 歌尔声学股份有限公司 | Micro-movable coil electroacoustic transducer |
| JP2013090309A (en) * | 2011-10-24 | 2013-05-13 | Kddi Corp | Acoustic transducer, speaker, and electronic apparatus |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE495350C (en) * | 1927-09-18 | 1930-04-05 | Telefunken Gmbh | Piezoelectric microphone |
| JPS60210171A (en) * | 1983-11-23 | 1985-10-22 | Shoketsu Kinzoku Kogyo Co Ltd | Actuator |
| US20080273720A1 (en) * | 2005-05-31 | 2008-11-06 | Johnson Kevin M | Optimized piezo design for a mechanical-to-acoustical transducer |
| DE102009040264A1 (en) * | 2009-09-04 | 2011-03-10 | Volkswagen Ag | Ultrasonic waves producing method for e.g. aircraft, involves causing thickness mode of vibrations between converter and component during activation of converter, and producing ultrasonic waves by thickness mode of vibrations |
| DE102012201884A1 (en) * | 2012-02-09 | 2013-08-14 | Robert Bosch Gmbh | transducer |
| KR101788428B1 (en) * | 2013-03-11 | 2017-10-19 | 애플 인크. | Portable electronic device using a tactile vibrator |
| EP3090427B1 (en) * | 2013-12-30 | 2022-11-02 | Photosonix Medical, Inc. | Flextensional transducer and related method |
-
2015
- 2015-07-22 DE DE102015213813.5A patent/DE102015213813A1/en active Pending
-
2016
- 2016-06-15 EP EP16731553.0A patent/EP3325179A1/en not_active Withdrawn
- 2016-06-15 CN CN201680043130.0A patent/CN107847980B/en active Active
- 2016-06-15 WO PCT/EP2016/063746 patent/WO2017012787A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070090723A1 (en) * | 2003-03-31 | 2007-04-26 | Keolian Robert M | Thermacoustic piezoelectric generator |
| US20050179339A1 (en) * | 2003-06-02 | 2005-08-18 | Ambient Systems, Inc. | Electromechanical assemblies using molecular-scale electrically conductive and mechanically flexible beams and methods for application of same |
| CN201383870Y (en) * | 2009-01-19 | 2010-01-13 | 歌尔声学股份有限公司 | Micro-movable coil electroacoustic transducer |
| JP2013090309A (en) * | 2011-10-24 | 2013-05-13 | Kddi Corp | Acoustic transducer, speaker, and electronic apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107847980B (en) | 2021-06-22 |
| EP3325179A1 (en) | 2018-05-30 |
| WO2017012787A1 (en) | 2017-01-26 |
| DE102015213813A1 (en) | 2017-01-26 |
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