DE2318027C3 - Elektroakustischer Wandler mit einem piezoelektrischen Biegeschwinger - Google Patents
Elektroakustischer Wandler mit einem piezoelektrischen BiegeschwingerInfo
- Publication number
- DE2318027C3 DE2318027C3 DE2318027A DE2318027A DE2318027C3 DE 2318027 C3 DE2318027 C3 DE 2318027C3 DE 2318027 A DE2318027 A DE 2318027A DE 2318027 A DE2318027 A DE 2318027A DE 2318027 C3 DE2318027 C3 DE 2318027C3
- Authority
- DE
- Germany
- Prior art keywords
- electroacoustic transducer
- piezoelectric element
- transducer according
- membrane
- damping
- 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.)
- Expired
Links
- 238000013016 damping Methods 0.000 claims description 43
- 239000012528 membrane Substances 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 12
- 229920001971 elastomer Polymers 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 7
- 239000000314 lubricant Substances 0.000 claims description 2
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 2
- 235000014277 Clidemia hirta Nutrition 0.000 claims 1
- 241000069219 Henriettea Species 0.000 claims 1
- 239000003921 oil Substances 0.000 claims 1
- 230000004044 response Effects 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 8
- 230000010355 oscillation Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 2
- 238000005452 bending 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
- 239000000806 elastomer Substances 0.000 description 2
- 239000013536 elastomeric material Substances 0.000 description 2
- 210000003127 knee Anatomy 0.000 description 2
- 244000059549 Borneo rubber Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 229920001821 foam rubber Polymers 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US24250172A | 1972-04-10 | 1972-04-10 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2318027A1 DE2318027A1 (de) | 1973-11-08 |
| DE2318027B2 DE2318027B2 (de) | 1975-03-20 |
| DE2318027C3 true DE2318027C3 (de) | 1975-10-30 |
Family
ID=22915023
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19737313564U Expired DE7313564U (de) | 1972-04-10 | 1973-04-10 | Akustischer wandler mit einem piezoelektrischen treiber |
| DE2318027A Expired DE2318027C3 (de) | 1972-04-10 | 1973-04-10 | Elektroakustischer Wandler mit einem piezoelektrischen Biegeschwinger |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19737313564U Expired DE7313564U (de) | 1972-04-10 | 1973-04-10 | Akustischer wandler mit einem piezoelektrischen treiber |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US3786202A (xx) |
| JP (1) | JPS5338924B2 (xx) |
| AU (1) | AU5415873A (xx) |
| BE (1) | BE798009A (xx) |
| CA (1) | CA991304A (xx) |
| DE (2) | DE7313564U (xx) |
| FR (1) | FR2179883B1 (xx) |
| GB (1) | GB1399766A (xx) |
| HK (1) | HK74978A (xx) |
| IT (1) | IT982996B (xx) |
| NL (1) | NL173699C (xx) |
Families Citing this family (44)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4035672A (en) * | 1975-02-06 | 1977-07-12 | Cts Corporation | Acoustic transducer with a dual purpose piezoelectric element |
| JPS5437135U (xx) * | 1977-08-18 | 1979-03-10 | ||
| GB2018548B (en) * | 1978-04-07 | 1982-06-16 | Matsushita Electric Ind Co Ltd | Piezoelectric speaker |
| JPS5825677Y2 (ja) * | 1978-04-07 | 1983-06-02 | 松下電器産業株式会社 | 圧電形スピ−カ |
| DE2831362A1 (de) * | 1978-07-17 | 1980-01-31 | Siemens Ag | Elektroakustischer wandler |
| DE2831377A1 (de) * | 1978-07-17 | 1980-01-31 | Siemens Ag | Elektroakustischer wandler |
| JPS5911237B2 (ja) * | 1979-08-16 | 1984-03-14 | 株式会社精工舎 | 圧電スピ−カ |
| DE3005708C2 (de) * | 1980-02-15 | 1984-08-30 | Siemens AG, 1000 Berlin und 8000 München | Wandlerplatte für piezoelektrische Wandler |
| EP0057193A1 (en) * | 1980-08-11 | 1982-08-11 | Motorola, Inc. | Apparatus and method for enhancing the frequency response of a loudspeaker |
| JPS6025956B2 (ja) * | 1980-12-10 | 1985-06-21 | 松下電器産業株式会社 | 超音波送受波器 |
| JPS5851697A (ja) * | 1981-09-22 | 1983-03-26 | Matsushita Electric Ind Co Ltd | 超音波送受波器 |
| US4607186A (en) * | 1981-11-17 | 1986-08-19 | Matsushita Electric Industrial Co. Ltd. | Ultrasonic transducer with a piezoelectric element |
| US4458170A (en) * | 1981-12-08 | 1984-07-03 | Matsushita Electric Industrial Co., Ltd. | Ultrasonic transmitter-receiver |
| US4418248A (en) * | 1981-12-11 | 1983-11-29 | Koss Corporation | Dual element headphone |
| US4414436A (en) * | 1982-04-19 | 1983-11-08 | Pioneer Speaker Components, Inc. | Narrow-frequency band acoustic transducer |
| US4461930A (en) * | 1982-09-23 | 1984-07-24 | Pioneer Speaker Components, Inc. | Acoustic transducer with honeycomb diaphragm |
| JPS59130126U (ja) * | 1983-02-18 | 1984-09-01 | 小糸工業株式会社 | データ収集記憶装置 |
| DE3306801A1 (de) * | 1983-02-26 | 1984-09-06 | Rainer J. 5000 Köln Haas | Kugelfoermiger hochtonlautsprecher mit piezoelektrischern antrieb |
| FR2574610A1 (fr) * | 1984-09-05 | 1986-06-13 | Sawafuji Dynameca Co Ltd | Elements piezoelectriques vibrants et transducteurs piezoelectriques electroacoustiques utilisant de tels elements |
| FR2574609A1 (fr) * | 1984-09-05 | 1986-06-13 | Sawafuji Dynameca Co Ltd | Elements piezoelectriques vibrants et transducteurs piezoelectriques electroacoustiques utilisant de tels elements |
| GB2166022A (en) * | 1984-09-05 | 1986-04-23 | Sawafuji Dynameca Co Ltd | Piezoelectric vibrator |
| US5193119A (en) * | 1985-09-02 | 1993-03-09 | Franco Tontini | Multiple loudspeaker |
| JPH0749914Y2 (ja) * | 1986-01-29 | 1995-11-13 | 株式会社村田製作所 | 超音波トランスデユ−サ |
| DE4120681A1 (de) * | 1990-08-04 | 1992-02-06 | Bosch Gmbh Robert | Ultraschallwandler |
| US5652801A (en) * | 1994-05-02 | 1997-07-29 | Aura Systems, Inc. | Resonance damper for piezoelectric transducer |
| US5828768A (en) * | 1994-05-11 | 1998-10-27 | Noise Cancellation Technologies, Inc. | Multimedia personal computer with active noise reduction and piezo speakers |
| US5638456A (en) * | 1994-07-06 | 1997-06-10 | Noise Cancellation Technologies, Inc. | Piezo speaker and installation method for laptop personal computer and other multimedia applications |
| US5444324A (en) * | 1994-07-25 | 1995-08-22 | Western Atlas International, Inc. | Mechanically amplified piezoelectric acoustic transducer |
| FR2734685B1 (fr) * | 1995-05-23 | 1997-08-14 | Silec Liaisons Elec | Haut-parleur piezoelectrique |
| US5901231A (en) | 1995-09-25 | 1999-05-04 | Noise Cancellation Technologies, Inc. | Piezo speaker for improved passenger cabin audio systems |
| JPH10294995A (ja) * | 1997-04-21 | 1998-11-04 | Matsushita Electric Ind Co Ltd | 防滴型超音波送信器 |
| US6181797B1 (en) | 1999-01-09 | 2001-01-30 | Noise Cancellation Technologies, Inc. | Piezo speaker for improved passenger cabin audio systems |
| GB2404779B (en) * | 2003-08-07 | 2005-08-03 | Sonic Age Ltd | Electro-acoustic device for creating patterns of particulate matter |
| US8354773B2 (en) * | 2003-08-22 | 2013-01-15 | Siemens Medical Solutions Usa, Inc. | Composite acoustic absorber for ultrasound transducer backing material |
| JP4696487B2 (ja) * | 2004-07-15 | 2011-06-08 | リコープリンティングシステムズ株式会社 | 記録ヘッド及びこれを備えたインクジェット記録装置 |
| US7415121B2 (en) * | 2004-10-29 | 2008-08-19 | Sonion Nederland B.V. | Microphone with internal damping |
| WO2010007735A1 (ja) * | 2008-07-14 | 2010-01-21 | 株式会社村田製作所 | 圧電発電装置 |
| DE112009003590B4 (de) * | 2008-12-04 | 2018-06-14 | Murata Manufacturing Co., Ltd. | Ultraschallwandler |
| KR20120068613A (ko) * | 2010-12-17 | 2012-06-27 | 삼성전기주식회사 | 압전 액추에이터 |
| WO2014024551A1 (ja) | 2012-08-10 | 2014-02-13 | 京セラ株式会社 | 音響発生器、音響発生装置および電子機器 |
| US9880671B2 (en) * | 2013-10-08 | 2018-01-30 | Sentons Inc. | Damping vibrational wave reflections |
| US20160219373A1 (en) * | 2015-01-23 | 2016-07-28 | Knowles Electronics, Llc | Piezoelectric Speaker Driver |
| KR101756673B1 (ko) * | 2016-06-07 | 2017-07-25 | 주식회사 이엠텍 | 다공성 물질을 구비하는 마이크로스피커 인클로져 |
| KR101788111B1 (ko) * | 2016-06-09 | 2017-10-20 | 주식회사 이엠텍 | 다공성 물질을 구비하는 마이크로스피커 인클로져 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2518331A (en) * | 1948-05-06 | 1950-08-08 | Bell Telephone Labor Inc | Piezoelectric crystal mounting |
| FR1376306A (fr) * | 1963-02-07 | 1964-10-23 | Brown Ltd S G | Perfectionnements aux transducteurs électro-acoustiques |
| GB1159337A (en) * | 1966-06-13 | 1969-07-23 | Motorola Inc | Piezoelectric Transducers |
| US3588381A (en) * | 1967-08-28 | 1971-06-28 | Motorola Inc | Transducer having spaced apart oppositely flexing piezoelectric members |
| NL6813996A (xx) * | 1968-09-30 | 1970-04-01 | ||
| US3698993A (en) * | 1971-03-29 | 1972-10-17 | Sonix Inc | Sound deadening sheet material |
-
1972
- 1972-04-10 US US00242501A patent/US3786202A/en not_active Expired - Lifetime
-
1973
- 1973-03-14 CA CA166,055A patent/CA991304A/en not_active Expired
- 1973-03-16 GB GB1283473A patent/GB1399766A/en not_active Expired
- 1973-04-05 AU AU54158/73A patent/AU5415873A/en not_active Expired
- 1973-04-06 IT IT49299/73A patent/IT982996B/it active
- 1973-04-10 NL NLAANVRAGE7305005,A patent/NL173699C/xx not_active IP Right Cessation
- 1973-04-10 JP JP4007673A patent/JPS5338924B2/ja not_active Expired
- 1973-04-10 DE DE19737313564U patent/DE7313564U/de not_active Expired
- 1973-04-10 DE DE2318027A patent/DE2318027C3/de not_active Expired
- 1973-04-10 BE BE129846A patent/BE798009A/xx not_active IP Right Cessation
- 1973-04-10 FR FR7312775A patent/FR2179883B1/fr not_active Expired
-
1978
- 1978-12-20 HK HK749/78A patent/HK74978A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2179883B1 (xx) | 1979-09-28 |
| JPS5338924B2 (xx) | 1978-10-18 |
| AU5415873A (en) | 1974-10-10 |
| GB1399766A (en) | 1975-07-02 |
| DE7313564U (de) | 1973-11-22 |
| JPS4910719A (xx) | 1974-01-30 |
| NL7305005A (xx) | 1973-10-12 |
| DE2318027A1 (de) | 1973-11-08 |
| FR2179883A1 (xx) | 1973-11-23 |
| NL173699C (nl) | 1984-02-16 |
| US3786202A (en) | 1974-01-15 |
| CA991304A (en) | 1976-06-15 |
| BE798009A (fr) | 1973-10-10 |
| DE2318027B2 (de) | 1975-03-20 |
| HK74978A (en) | 1978-12-29 |
| IT982996B (it) | 1974-10-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| E77 | Valid patent as to the heymanns-index 1977 | ||
| 8339 | Ceased/non-payment of the annual fee |