WO2012090383A1 - 発振装置および電子機器 - Google Patents
発振装置および電子機器 Download PDFInfo
- Publication number
- WO2012090383A1 WO2012090383A1 PCT/JP2011/006572 JP2011006572W WO2012090383A1 WO 2012090383 A1 WO2012090383 A1 WO 2012090383A1 JP 2011006572 W JP2011006572 W JP 2011006572W WO 2012090383 A1 WO2012090383 A1 WO 2012090383A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- waterproof
- oscillation
- piezoelectric element
- vibration
- oscillation device
- Prior art date
Links
- 239000000463 material Substances 0.000 claims abstract description 17
- 230000010355 oscillation Effects 0.000 claims description 82
- 230000002093 peripheral effect Effects 0.000 claims description 19
- 239000010410 layer Substances 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 5
- 230000005684 electric field Effects 0.000 description 5
- 239000010408 film Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005520 electrodynamics Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
- H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
-
- 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
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/023—Screens for loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2217/00—Details of magnetostrictive, piezoelectric, or electrostrictive transducers covered by H04R15/00 or H04R17/00 but not provided for in any of their subgroups
- H04R2217/03—Parametric transducers where sound is generated or captured by the acoustic demodulation of amplitude modulated ultrasonic waves
-
- 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
- H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/006—Interconnection of transducer parts
Definitions
- the present invention relates to an oscillation device and an electronic device.
- Patent Documents 1 to 3 there are various proposals for the electroacoustic transducer as described above.
- a piezoelectric element serving as a drive source for a piezoelectric electroacoustic transducer is composed of a piezoelectric body whose upper and lower main surfaces are constrained by an electrode material. Since a normal piezoelectric electroacoustic transducer has a structure in which a vibrating member is joined to this piezoelectric element, even if either the vibrating member or the piezoelectric element faces the sound hole side, the resistance to moisture is Low.
- the present invention has been made in view of the above-described problems, and provides a waterproof piezoelectric oscillation device and a waterproof electronic device using such an oscillation device.
- An oscillating device of the present invention includes an oscillating element having a oscillating member and a piezoelectric element attached to one surface of the oscillating member; A sheet-like waterproof member made of a waterproof material; A frame-shaped support member holding the outer periphery of the vibration member and the outer periphery of the waterproof member so that the waterproof member and the oscillation element face each other; A connecting member that partially connects the mutually facing surfaces of the oscillation element and the waterproof member; Is provided.
- the electronic device of the present invention includes a housing, A sound hole provided in the housing; An oscillation device provided in the housing; With The oscillator is An oscillation element having a vibration member and a piezoelectric element attached to one surface of the vibration member; A sheet-like waterproof member made of a waterproof material; A frame-shaped support member holding the outer periphery of the vibration member and the outer periphery of the waterproof member so that the waterproof member and the oscillation element face each other; A connecting member that partially connects the mutually facing surfaces of the oscillation element and the waterproof member; Have The support member is joined to the inner surface of the housing so that the waterproof member faces the sound hole and surrounds the sound hole.
- the vibration of at least one of the vibration member and the piezoelectric element is transmitted via the connecting member to the sheet-like waterproof member whose outer peripheral portion is supported by the frame-shaped support member.
- the waterproof member since the waterproof member vibrates together with the oscillating piezoelectric element or the vibrating member, the waterproof member can oscillate ultrasonic waves. Since the outer peripheral portion of the waterproof member is supported by a frame-shaped support member, and the vibration member and the piezoelectric element are arranged on one side with respect to the waterproof member, the vibration member and the piezoelectric element are arranged by the waterproof member. Can be waterproof.
- the electroacoustic transducer 100 which is an oscillation device of the present embodiment will be described below with reference to FIG.
- the electroacoustic transducer 100 includes an oscillation element 110 having a vibration member 120 and a piezoelectric element 111 attached to one surface of the vibration member 120.
- the electroacoustic transducer 100 further includes a sheet-like waterproof member 140 made of a waterproof material.
- the electroacoustic transducer 100 further includes a frame-shaped support member 130 that holds the outer periphery of the vibration member 120 and the outer periphery of the waterproof member 140 so that the waterproof member 140 and the oscillation element 110 face each other.
- the electroacoustic transducer 100 further includes a connecting member 150 that partially connects the mutually facing surfaces of the oscillation element 110 and the waterproof member 140.
- the vibration member 120 and the waterproof member 140 are opposed to each other, and the connecting member 150 connects the vibration member 120 and the waterproof member 140 to each other.
- the support member 130 protrudes in the direction opposite to the vibration member 120 with respect to the waterproof member 140.
- the support member 130 is joined to the inner surface of the housing 1010 so that the waterproof member 140 faces the sound hole 1011 of the housing 1010 so as to surround the sound hole 1011.
- the vibration member 120 is held by the support member 130 by joining the outer peripheral portion thereof to the inner peripheral surface of the support member 130.
- the waterproof member 140 is held by the support member 130 by joining the outer peripheral portion thereof to the inner peripheral surface of the support member 130.
- the entire outer periphery of the waterproof member 140 is joined to the inner peripheral surface of the support member 130.
- the waterproof performance is maintained by surface tension (between the outer peripheral portion of the waterproof member 140 and the inner peripheral surface of the support member 130).
- the gap may be formed to such an extent that the water tightness of the film can be secured.
- the some connection member 150 is provided mutually spaced apart.
- the planar dimension of the vibration member 120 is larger than the planar dimension of the piezoelectric element 111.
- the piezoelectric element 111 is disposed so as to avoid the outer peripheral portion of the vibration member 120.
- the piezoelectric element 111 is disposed at the center of the vibration member 120.
- the planar dimension of the waterproof member 140 may be larger than the planar dimension of the vibration member 120 or may be approximately the same as the planar dimension of the vibration member 120.
- Electronic device 1000 of this embodiment includes housing 1010, sound hole 1011 provided in housing 1010, and electroacoustic transducer 100 provided in housing 1010.
- the electroacoustic transducer 100 includes an oscillation element 110 having a vibration member 120 and a piezoelectric element 111 attached to one surface of the vibration member 120.
- the electroacoustic transducer 100 further includes a sheet-like waterproof member 140 made of a waterproof material, and the outer peripheral portion of the vibration member 120 and the waterproof member so that the waterproof member 140 and the oscillation element 110 face each other.
- a frame-shaped support member 130 that holds the outer peripheral portion of 140, and a connecting member 150 that partially connects the mutually facing surfaces of the oscillation element 110 and the waterproof member 140.
- the support member 130 is joined to the inner surface of the housing 1010 so that the waterproof member 140 faces the sound hole 1011 and surrounds the sound hole 1011. Accordingly, the oscillation element 110 including the vibration member 120 and the piezoelectric element 111 is positioned inside the housing 1010 with respect to the waterproof member 140, and thus is waterproofed by the waterproof member 140.
- the electronic apparatus 1000 includes a driver circuit 160 that is an oscillation driving unit that inputs a modulation signal for driving the electroacoustic transducer 100 as a parametric speaker to the piezoelectric element 111.
- a driver circuit 160 that is an oscillation driving unit that inputs a modulation signal for driving the electroacoustic transducer 100 as a parametric speaker to the piezoelectric element 111.
- the piezoelectric element 111 is formed in a flat plate shape and expands and contracts when an electric field is applied.
- the vibration member 120 has a larger diameter and is flatter than the piezoelectric element 111, and constrains one surface of the piezoelectric element 111.
- the waterproof member 140 is flat and is positioned in parallel with the vibration member 120. The piezoelectric element 111 is constrained on one surface of the vibration member 120, and the waterproof member 140 is connected to the other surface of the vibration member 120 via a connection member 150.
- One end portion of the support member 130 is joined so as to ensure watertightness between the one end portion and the inner surface of the housing 1010.
- the planar shape of the piezoelectric element 111, the vibration member 120, the waterproof member 140, and the support member 130 may be circular or rectangular, but is, for example, a square. More specifically, electrode layers 112 are formed on the front and back surfaces of the piezoelectric element 111, and an insulating layer 113 is formed on the outer peripheral portion of the piezoelectric element 111. An oscillation element 110 is formed by the electrode layer 112, the piezoelectric element 111, the insulating layer 113, and the vibration member 120, and a driver circuit 160 that is an oscillation drive unit is electrically connected to the oscillation element 110.
- the piezoelectric element 111 is not particularly limited as long as it is a material having a piezoelectric effect.
- the material has a high electromechanical conversion efficiency, for example, lead zirco-titanate (PZT).
- PZT lead zirco-titanate
- a material such as barium titanate (BaTiO 3 ) can be used.
- the thickness of the piezoelectric element 111 is not particularly limited, but is preferably 10 ⁇ m or more and 500 ⁇ m or less.
- a thin film having a thickness of less than 10 ⁇ m made of a ceramic material, which is a brittle material is used as the piezoelectric element 111, it is difficult to handle because of its weak mechanical strength, which causes chipping or breakage during handling.
- a ceramic having a thickness of more than 500 ⁇ m is used as the piezoelectric element 111, the energy conversion efficiency for converting electrical energy into mechanical energy is significantly reduced, and it is difficult to obtain sufficient performance as a speaker unit.
- the energy conversion efficiency depends on the electric field strength. Since the electric field strength is expressed by the thickness / input voltage with respect to the polarization direction, an increase in the thickness inevitably causes a decrease in energy conversion efficiency.
- an electrode layer 112 is formed on each of the front and back main surfaces in order to generate an electric field.
- the thickness of the electrode layer 112 is not particularly limited, but the thickness is preferably 1 to 100 ⁇ m. If the thickness is less than 1 ⁇ m, since the film thickness is thin, it cannot be uniformly formed, and the energy conversion efficiency may be reduced. Further, when the film thickness of the electrode layer 112 exceeds 100 ⁇ m, there is no particular problem in manufacturing, but there is a problem that the electrode layer 112 becomes a constraining surface with respect to the piezoelectric element 111 and energy conversion efficiency is lowered.
- the material constituting the vibration member 120 is not particularly limited as long as it is a material having a high elastic modulus with respect to a ceramic that is a brittle material such as metal or resin, but phosphor bronze, stainless steel, or the like is preferable from the viewpoint of workability and cost. .
- the thickness of the vibration member 120 is preferably 5 to 1000 ⁇ m. When the thickness of the vibration member 120 is less than 5 ⁇ m, the mechanical strength is weak and the function as a restraining member is impaired, and the mechanical vibration characteristics of the vibrators vary between production lots due to a decrease in processing accuracy. There is a problem.
- the connecting member 150 has a shape and an arrangement for transmitting the vibration of the vibration member 120 that oscillates together with the oscillation element 110 to the waterproof member 140 with high efficiency.
- the connecting member 150 is formed in a columnar shape that connects the vibration member 120 and the waterproof member 140 at a plurality of locations, and is arranged at the four corner outer sides and the center of the oscillation element 110.
- the mechanism of sound wave generation uses the expansion and contraction generated by the application of an electric field to the piezoelectric element 111. Moreover, the frequency of an ultrasonic wave is limited to 20 kHz or more. Since the piezoelectric element 111 has a high mechanical quality factor Q, energy is concentrated in the vicinity of the basic resonance, so that a high sound pressure level can be obtained at the basic resonance frequency. However, in other frequency bands, the sound pressure is attenuated. End up.
- the electroacoustic transducer 100 of the present embodiment oscillates ultrasonic waves limited to a specific frequency, rather, the mechanical quality factor Q of the piezoelectric element 111 is superior as a characteristic.
- the basic resonance frequency of the oscillation element 110 is affected by the shape of the piezoelectric element 111, when the resonance frequency is adjusted to a high frequency band, for example, an ultrasonic band, it is advantageous for miniaturization.
- the electroacoustic transducer 100 oscillates an FM (Frequency Modulation) or AM (Amplitude Modulation) modulated ultrasonic wave and uses a non-linear state (sparse / dense state) of air to generate a modulated wave. Sound reproduction is performed based on the principle of a so-called parametric speaker that demodulates and reproduces audible sound.
- the piezoelectric element 111 has a configuration limited to oscillation in a high frequency band, and thus can be miniaturized.
- the vibration of the piezoelectric element 111 vibrates toward the sheet-like waterproof member 140 whose outer peripheral portion is supported by the frame-like support member 130. It is transmitted from the member 120 via the connecting member 150.
- the waterproof member 140 since the waterproof member 140 vibrates together with the oscillating piezoelectric element 111 and the vibration member 120, the waterproof member 140 can oscillate ultrasonic waves.
- the waterproof member 140 has an outer peripheral portion supported by a frame-shaped support member 130, and the vibration member 120 and the piezoelectric element 111 are arranged on one side (the lower side in FIG. 1) with respect to the waterproof member 140. Therefore, the vibration member 120 and the piezoelectric element 111 can be waterproofed by the waterproof member 140.
- the end portion of the electroacoustic transducer 100 where stress is concentrated during vibration is constituted by a waterproof member 140 that is rich in flexibility. That is, since the impact energy at the time of dropping can be absorbed by the waterproof member 140, the dropping strength is improved.
- the driving force (vibration) of the piezoelectric element 111 is transmitted to the waterproof member 140 via the connecting member 150 to oscillate sound waves.
- vibration can be transmitted (propagated) by the connecting member 150 having an arbitrary shape.
- the electroacoustic transducer 100 of this configuration can oscillate not only in the audible band but also in the ultrasonic band.
- the present invention can also be applied to a parametric speaker that uses ultrasonic waves as a sound carrier.
- this configuration by appropriately setting the rigidity of the vibration member 120 and the waterproof member 140, it is possible to adjust to an arbitrary basic resonance frequency, and thus it is possible to easily form an ultrasonic transducer.
- the piezoelectric element 111 is restrained on one surface of the vibration member 120 and the waterproof member 140 is connected to the other surface of the vibration member 120 via the connection member 150.
- one surface of the piezoelectric element 111 is constrained by the vibration member 120 and the other surface of the piezoelectric element 111 is a connecting member. It may be connected to the waterproof member 140 via 150.
- the vibration member 120 and the waterproof member 140 are opposed to each other, and the connecting member 150 exemplifies that the vibration member 120 and the waterproof member 140 are connected to each other.
- the piezoelectric element 111 (the upper piezoelectric element 111 in FIG. 4) and the waterproof member 140 face each other, and the connecting member 150 is connected to the piezoelectric element 111.
- the upper piezoelectric element 111 in FIG. 4) and the waterproof member 140 may be connected to each other.
- the piezoelectric element 111 attached to one surface of the vibration member 120 and the second attached to the other surface of the vibration member 120.
- the piezoelectric element 111 may be included.
- the electroacoustic transducer 300 functions as a parametric speaker having a bimorph structure, the output increases.
- the oscillation element 110 and the connecting member 150 may be arranged on the surface of the vibration member 120, and the connecting member 150 may be connected to the back surface of the waterproof member 140 (not shown).
- the piezoelectric element may have a structure in which a plurality of piezoelectric ceramics and a plurality of electrode layers 112 are laminated (not shown).
- the vibration member 120 was facing the waterproof member 140, and the connection member 150 illustrated that the vibration member 120 and the waterproof member 140 were connected.
- the second vibrating member 120 attached to the piezoelectric element 111 is positioned on the opposite side of the vibrating member 120 with the piezoelectric element 111 interposed therebetween. You may have.
- an electronic device in which the electroacoustic transducer 100 is connected to a driver circuit 160 that is an oscillation driving unit is assumed.
- an electroacoustic transducer 100, an oscillation drive unit that outputs an ultrasonic wave to the electroacoustic transducer 100, and an ultrasonic wave that is detected from the ultrasonic wave that is oscillated from the electroacoustic transducer 100 and reflected by the measurement object is assumed.
- An electronic device such as a sonar that includes a detection unit and a distance measurement unit that calculates a distance from the detected ultrasonic wave to the measurement target can also be implemented.
- An oscillation element having a vibration member and a piezoelectric element attached to one surface of the vibration member;
- a support member that holds the outer periphery of the vibration member, and has an end protruding beyond the oscillation element;
- a sheet-like waterproof member made of a waterproof material, having an outer peripheral portion bonded to a portion of the support member that is positioned on the end side of the oscillation element, and A connecting member for connecting a part of a surface of the oscillation element facing the waterproof member to the waterproof member;
- An oscillation device comprising: (2) In the oscillation device according to (1) above, In the oscillation element, the vibration member is opposed to the waterproof member, The oscillating device in which the connecting member connects the vibrating member and the waterproof member.
- the support member is an oscillation device in which an end portion located on a side opposite to the vibration member protrudes from the waterproof member.
- the oscillation device in which the support member is joined to the entire outer periphery of the waterproof member.
- An oscillation device in which a plurality of the connecting members are provided apart from each other.
- a housing A sound hole provided in the housing; An oscillation device provided in a position facing the sound hole in the housing; With The oscillator is A vibrating member; A piezoelectric element attached to one surface of the vibration member; A sheet-like waterproof member that is attached to the other surface of the vibration member, has a planar shape larger than the vibration member, and is made of a waterproof material; A support member joined to the outer periphery of the waterproof member; Have The support device is an electronic device that is joined to an inner surface of the casing so as to surround the sound hole in a direction in which the waterproof member faces the sound hole. (10) In the electronic device described in (9) above, Electronic equipment comprising oscillation drive means for inputting a modulation signal for driving the oscillation device as a parametric speaker to the piezoelectric element.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Circuit For Audible Band Transducer (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
Description
防水性の材料により構成されているシート状の防水部材と、
前記防水部材と前記発振素子とが互いに対向するように、前記振動部材の外周部と前記防水部材の外周部とを保持している枠状の支持部材と、
前記発振素子と前記防水部材との互いの対向面どうしを部分的に連結する連結部材と、
を備える。
前記筐体に設けられた音孔と、
前記筐体内に設けられた発振装置と、
を備え、
前記発振装置は、
振動部材と、前記振動部材の一方の面に取り付けられた圧電素子と、を有する発振素子と、
防水性の材料により構成されているシート状の防水部材と、
前記防水部材と前記発振素子とが互いに対向するように、前記振動部材の外周部と前記防水部材の外周部とを保持している枠状の支持部材と、
前記発振素子と前記防水部材との互いの対向面どうしを部分的に連結する連結部材と、
を有し、
前記支持部材は、前記防水部材が前記音孔と対向する向きで、前記音孔を取り囲むように前記筐体の内面に接合されている。
防水部材140は、その外周部が支持部材130の内周面に接合されることにより、支持部材130により保持されている。例えば、防水部材140の外周部の全周が支持部材130の内周面に接合されている。ただし、防水部材140の外周部と支持部材130の内周面との間には、表面張力で防水性能が維持される程度(防水部材140の外周部と支持部材130の内周面との間の水密性を確保できる程度)の間隙が形成されていてもよい。また、本実施の形態の電気音響変換器100では、複数の連結部材150が互いに離間して設けられている。
振動部材120は、その平面寸法が、圧電素子111の平面寸法よりも大きい。圧電素子111は、振動部材120の外周部を避けて配置されている。例えば、圧電素子111は、振動部材120の中央部に配置されている。
防水部材140の平面寸法は、振動部材120の平面寸法よりも大きくても良いし、振動部材120の平面寸法と同程度でも良い。
従って、振動部材120及び圧電素子111を含む発振素子110は、防水部材140よりも筐体1010の内側に位置することとなるので、防水部材140によって防水される。
(1)
振動部材と、前記振動部材の一面に取り付けられた圧電素子とを有する発振素子と、
前記振動部材の外周部を保持しており、端部が前記発振素子よりも突出している支持部材と、
前記支持部材のうち前記発振素子よりも前記端部側に位置する部分に外周部が接合されており、防水性を有している材料から構成されているシート状の防水部材と、
前記発振素子のうち前記防水部材に対向している面の一部を前記防水部材に連結する連結部材と、
を備える発振装置。
(2)
上記(1)に記載の発振装置において、
前記発振素子は、前記振動部材が前記防水部材に対向しており、
前記連結部材は、前記振動部材と前記防水部材とを連結している発振装置。
(3)
上記(2)に記載の発振装置において、
前記圧電素子を介して前記振動部材とは逆側に位置し、前記圧電素子に取り付けられている第二振動部材を有する発振装置。
(4)
上記(1)に記載の発振装置において、
前記発振素子は、前記圧電素子が前記防水部材に対向しており、
前記連結部材は、前記圧電素子と前記防水部材とを連結している発振装置。
(5)
上記(4)に記載の発振装置において、
前記振動部材を介して前記圧電素子とは逆側に位置し、前記振動部材に取り付けられている第二圧電素子を有する発振装置。
(6)
上記(1)~(5)のいずれか一つに記載の発振装置において、
前記支持部材は、前記振動部材とは逆側に位置する端部が、前記防水部材よりも突出している発振装置。
(7)
上記(1)~(6)のいずれか一つに記載の発振装置において、
前記支持部材は、前記防水部材の外周部の全周に接合されている発振装置。
(8)
上記(1)~(7)のいずれか一つに記載の発振装置において、
複数の前記連結部材が互いに離間して設けられている発振装置。
(9)
筐体と、
前記筐体に設けられた音孔と、
前記筐体内に、前記音孔と対向する位置に設けられた発振装置と、
を備え、
前記発振装置は、
振動部材と、
前記振動部材の一面に取り付けられた圧電素子と、
前記振動部材の他面に取り付けられ、平面形状が前記振動部材よりも大きく、防水性を有している材料から構成されているシート状の防水部材と、
前記防水部材の外周部に接合されている支持部材と、
を有し、
前記支持部材は、前記防水部材が前記音孔に対向する向きに、前記音孔を取り囲むように前記筐体の内面に接合されている電子機器。
(10)
上記(9)に記載の電子機器において、
前記圧電素子に、前記発振装置をパラメトリックスピーカとして駆動させる変調信号を入力する発振駆動手段を備える電子機器。
Claims (10)
- 振動部材と、前記振動部材の一方の面に取り付けられた圧電素子と、を有する発振素子と、
防水性の材料により構成されているシート状の防水部材と、
前記防水部材と前記発振素子とが互いに対向するように、前記振動部材の外周部と前記防水部材の外周部とを保持している枠状の支持部材と、
前記発振素子と前記防水部材との互いの対向面どうしを部分的に連結する連結部材と、
を備える発振装置。 - 請求項1に記載の発振装置において、
前記振動部材と前記防水部材とが互いに対向し、
前記連結部材は、前記振動部材と前記防水部材とを相互に連結している発振装置。 - 請求項2に記載の発振装置において、
前記圧電素子を挟んで前記振動部材とは逆側に位置し、前記圧電素子に取り付けられている第二振動部材を有する発振装置。 - 請求項1に記載の発振装置において、
前記圧電素子と前記防水部材とが互いに対向し、
前記連結部材は、前記圧電素子と前記防水部材とを相互に連結している発振装置。 - 請求項4に記載の発振装置において、
前記振動部材の他方の面に取り付けられている第二圧電素子を有する発振装置。 - 請求項1~5のいずれか一項に記載の発振装置において、
前記支持部材は、前記防水部材を基準として前記振動部材とは反対側の方向へ突出している発振装置。 - 請求項1~6のいずれか一項に記載の発振装置において、
前記防水部材の外周部の全周が前記支持部材の内周面に接合されている発振装置。 - 請求項1~7のいずれか一項に記載の発振装置において、
複数の前記連結部材が互いに離間して設けられている発振装置。 - 筐体と、
前記筐体に設けられた音孔と、
前記筐体内に設けられた発振装置と、
を備え、
前記発振装置は、
振動部材と、前記振動部材の一方の面に取り付けられた圧電素子と、を有する発振素子と、
防水性の材料により構成されているシート状の防水部材と、
前記防水部材と前記発振素子とが互いに対向するように、前記振動部材の外周部と前記防水部材の外周部とを保持している枠状の支持部材と、
前記発振素子と前記防水部材との互いの対向面どうしを部分的に連結する連結部材と、
を有し、
前記支持部材は、前記防水部材が前記音孔と対向する向きで、前記音孔を取り囲むように前記筐体の内面に接合されている電子機器。 - 請求項9に記載の電子機器において、
前記発振装置をパラメトリックスピーカとして駆動させる変調信号を前記圧電素子に入力する発振駆動手段を備える電子機器。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012550687A JP5939160B2 (ja) | 2010-12-28 | 2011-11-25 | 発振装置および電子機器 |
EP11853815.6A EP2661102A4 (en) | 2010-12-28 | 2011-11-25 | Vibration device and electronic apparatus |
US13/994,333 US9337773B2 (en) | 2010-12-28 | 2011-11-25 | Oscillation device and electronic apparatus |
CN201180061380.4A CN103270776B (zh) | 2010-12-28 | 2011-11-25 | 振荡装置和电子设备 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010291873 | 2010-12-28 | ||
JP2010-291873 | 2010-12-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012090383A1 true WO2012090383A1 (ja) | 2012-07-05 |
Family
ID=46382528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/006572 WO2012090383A1 (ja) | 2010-12-28 | 2011-11-25 | 発振装置および電子機器 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9337773B2 (ja) |
EP (1) | EP2661102A4 (ja) |
JP (1) | JP5939160B2 (ja) |
CN (1) | CN103270776B (ja) |
WO (1) | WO2012090383A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5977473B1 (ja) * | 2015-08-20 | 2016-08-24 | Necトーキン株式会社 | 振動伝達構造、及び圧電スピーカ |
WO2017029768A1 (ja) * | 2015-08-20 | 2017-02-23 | Necトーキン株式会社 | 振動伝達構造、及び圧電スピーカ |
JP2021111957A (ja) * | 2020-01-14 | 2021-08-02 | 株式会社デンソー | 超音波センサ |
WO2024089918A1 (ja) * | 2022-10-26 | 2024-05-02 | 株式会社村田製作所 | 超音波トランスデューサおよびこれを備えるパラメリックスピーカ |
WO2024157556A1 (ja) * | 2023-01-25 | 2024-08-02 | 株式会社村田製作所 | 超音波トランスデューサおよびこれを備えるパラメトリックスピーカ |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5659956B2 (ja) * | 2011-06-03 | 2015-01-28 | パナソニックIpマネジメント株式会社 | 超音波送受波器及び超音波流量計 |
DE202012104036U1 (de) * | 2012-10-19 | 2014-01-20 | Endress + Hauser Flowtec Ag | Magnetisch-induktives Durchflussmessgerät |
CN110944274B (zh) * | 2019-11-20 | 2020-12-18 | 武汉大学 | 一种基于Piston-mode的带质量负载可调谐MEMS压电声换能器 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5828500A (ja) | 1981-08-06 | 1983-02-19 | 岡村金物株式会社 | 抜型用の切抜刃固定装置 |
JPS5866798U (ja) * | 1982-06-10 | 1983-05-06 | セイコーインスツルメンツ株式会社 | 腕時計 |
JPH04170897A (ja) | 1990-11-02 | 1992-06-18 | Murata Mfg Co Ltd | 防水スピーカ |
JPH04368099A (ja) | 1991-06-14 | 1992-12-21 | Murata Mfg Co Ltd | 防水機能を有するパネルスピーカ |
JPH0698397A (ja) * | 1992-09-14 | 1994-04-08 | Taiyo Yuden Co Ltd | 圧電発音体 |
JPH06161476A (ja) * | 1992-11-24 | 1994-06-07 | Canon Inc | 超指向性音波出力装置 |
JP2508675Y2 (ja) * | 1991-07-17 | 1996-08-28 | 株式会社村田製作所 | 圧電スピ―カ |
JP2007074663A (ja) * | 2005-09-09 | 2007-03-22 | Nec Tokin Corp | 音響信号発生用圧電装置 |
JP2010110001A (ja) * | 2009-12-22 | 2010-05-13 | Panasonic Corp | 電子機器 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5911237B2 (ja) * | 1979-08-16 | 1984-03-14 | 株式会社精工舎 | 圧電スピ−カ |
JPS5866798A (ja) | 1981-10-16 | 1983-04-21 | Mitsubishi Electric Corp | 熱交換器 |
US4461930A (en) * | 1982-09-23 | 1984-07-24 | Pioneer Speaker Components, Inc. | Acoustic transducer with honeycomb diaphragm |
JPH0511694A (ja) | 1991-07-04 | 1993-01-22 | Brother Ind Ltd | 地図送信システム |
US5357578A (en) | 1992-11-24 | 1994-10-18 | Canon Kabushiki Kaisha | Acoustic output device, and electronic apparatus using the acoustic output device |
CN1843058B (zh) | 2004-08-12 | 2012-07-04 | 株式会社村田制作所 | 压电电声换能器 |
TWI367034B (en) * | 2008-08-01 | 2012-06-21 | Ind Tech Res Inst | Structure of a speaker unit |
TWI352547B (en) * | 2008-10-21 | 2011-11-11 | Ind Tech Res Inst | Methods of making speakers |
TW201038086A (en) * | 2009-04-09 | 2010-10-16 | Ind Tech Res Inst | Electrostatic speaker |
-
2011
- 2011-11-25 CN CN201180061380.4A patent/CN103270776B/zh not_active Expired - Fee Related
- 2011-11-25 WO PCT/JP2011/006572 patent/WO2012090383A1/ja active Application Filing
- 2011-11-25 EP EP11853815.6A patent/EP2661102A4/en not_active Withdrawn
- 2011-11-25 US US13/994,333 patent/US9337773B2/en not_active Expired - Fee Related
- 2011-11-25 JP JP2012550687A patent/JP5939160B2/ja not_active Expired - Fee Related
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5828500A (ja) | 1981-08-06 | 1983-02-19 | 岡村金物株式会社 | 抜型用の切抜刃固定装置 |
JPS5866798U (ja) * | 1982-06-10 | 1983-05-06 | セイコーインスツルメンツ株式会社 | 腕時計 |
JPH04170897A (ja) | 1990-11-02 | 1992-06-18 | Murata Mfg Co Ltd | 防水スピーカ |
JPH04368099A (ja) | 1991-06-14 | 1992-12-21 | Murata Mfg Co Ltd | 防水機能を有するパネルスピーカ |
JP2508675Y2 (ja) * | 1991-07-17 | 1996-08-28 | 株式会社村田製作所 | 圧電スピ―カ |
JPH0698397A (ja) * | 1992-09-14 | 1994-04-08 | Taiyo Yuden Co Ltd | 圧電発音体 |
JPH06161476A (ja) * | 1992-11-24 | 1994-06-07 | Canon Inc | 超指向性音波出力装置 |
JP2007074663A (ja) * | 2005-09-09 | 2007-03-22 | Nec Tokin Corp | 音響信号発生用圧電装置 |
JP2010110001A (ja) * | 2009-12-22 | 2010-05-13 | Panasonic Corp | 電子機器 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2661102A4 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5977473B1 (ja) * | 2015-08-20 | 2016-08-24 | Necトーキン株式会社 | 振動伝達構造、及び圧電スピーカ |
WO2017029768A1 (ja) * | 2015-08-20 | 2017-02-23 | Necトーキン株式会社 | 振動伝達構造、及び圧電スピーカ |
KR20170113637A (ko) * | 2015-08-20 | 2017-10-12 | 가부시키가이샤 토킨 | 진동 전달 구조 및 압전 스피커 |
CN107852554A (zh) * | 2015-08-20 | 2018-03-27 | 株式会社东金 | 振动传递结构和压电扬声器 |
KR102000937B1 (ko) * | 2015-08-20 | 2019-07-17 | 가부시키가이샤 토킨 | 진동 전달 구조 및 압전 스피커 |
JP2021111957A (ja) * | 2020-01-14 | 2021-08-02 | 株式会社デンソー | 超音波センサ |
JP7439689B2 (ja) | 2020-01-14 | 2024-02-28 | 株式会社デンソー | 超音波センサ |
WO2024089918A1 (ja) * | 2022-10-26 | 2024-05-02 | 株式会社村田製作所 | 超音波トランスデューサおよびこれを備えるパラメリックスピーカ |
WO2024157556A1 (ja) * | 2023-01-25 | 2024-08-02 | 株式会社村田製作所 | 超音波トランスデューサおよびこれを備えるパラメトリックスピーカ |
Also Published As
Publication number | Publication date |
---|---|
US9337773B2 (en) | 2016-05-10 |
CN103270776B (zh) | 2016-08-31 |
EP2661102A1 (en) | 2013-11-06 |
JPWO2012090383A1 (ja) | 2014-06-05 |
EP2661102A4 (en) | 2017-11-01 |
US20130307633A1 (en) | 2013-11-21 |
JP5939160B2 (ja) | 2016-06-22 |
CN103270776A (zh) | 2013-08-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5939160B2 (ja) | 発振装置および電子機器 | |
JP5741580B2 (ja) | 発振装置 | |
JP5682973B2 (ja) | 発振装置および電子機器 | |
JP5954181B2 (ja) | 発振装置および電子機器 | |
WO2012060041A1 (ja) | 発振装置及び携帯装置 | |
JP2012015755A (ja) | 発振装置および電子機器 | |
JP2012015758A (ja) | 発振装置、その製造方法、電子機器 | |
JP2012142648A (ja) | 電子機器 | |
CN104718768A (zh) | 电声换能器及其制造方法和使用电声换能器的电子设备 | |
JP5516180B2 (ja) | 発振装置及び電子機器 | |
JP6020465B2 (ja) | 発振装置 | |
JP5488266B2 (ja) | 発振装置 | |
JP2012100048A (ja) | 電子機器 | |
JP2012134599A (ja) | 発振装置および電子機器 | |
JP2012134597A (ja) | 発振装置および電子機器 | |
JP2012134595A (ja) | 発振装置および電子機器 | |
JP5659598B2 (ja) | 発振装置 | |
JP5671945B2 (ja) | 発振装置および電子機器 | |
JP2012134593A (ja) | 発振装置および電子機器 | |
JP2012134592A (ja) | 発振装置および電子機器 | |
JP2012142651A (ja) | 発振装置及び電子機器 | |
JP2012134596A (ja) | 発振装置および電子機器 | |
JP2012015756A (ja) | 電子機器および発振ユニット | |
JP2012134598A (ja) | 発振装置および電子機器 | |
JP2012134594A (ja) | 発振装置および電子機器 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11853815 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2012550687 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011853815 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13994333 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |