CN103152681A - Piezoelectric ceramic transducer - Google Patents
Piezoelectric ceramic transducer Download PDFInfo
- Publication number
- CN103152681A CN103152681A CN2013101052615A CN201310105261A CN103152681A CN 103152681 A CN103152681 A CN 103152681A CN 2013101052615 A CN2013101052615 A CN 2013101052615A CN 201310105261 A CN201310105261 A CN 201310105261A CN 103152681 A CN103152681 A CN 103152681A
- Authority
- CN
- China
- Prior art keywords
- piezoelectric ceramic
- vibrating diaphragm
- transducer
- ceramic transducer
- cover plate
- 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.)
- Granted
Links
Images
Landscapes
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
The invention discloses a piezoelectric ceramic transducer which comprises an upper casing, a lower casing, a vibrating diaphragm, a piezoelectric ceramic laminated piece, a cavernous cover plate and a reflecting cap. The cavernous cover plate is horizontally arranged at an opening at the top of the upper casing; the cavernous cover plate and the upper casing form a first containing space; the reflecting cap is fixedly arranged on the bottom surface of the cavernous cover plate and positioned in the first containing space; a second containing space is formed inside the lower casing; the vibrating diaphragm and the piezoelectric ceramic laminated piece are positioned in the second containing space; two ends of the vibrating diaphragm are respectively fixed on the side wall of the lower casing; the bottom of the vibrating diaphragm is connected with the piezoelectric ceramic laminated piece; the first containing space is communicated with the second containing space through a loudspeaking channel; the loudspeaking channel is positioned above the vibrating diaphragm; and the reflecting cap is covered above the loudspeaking channel in a non-contact way. The piezoelectric ceramic transducer serves as a receiving and transmitting combined transducer, has a function of rain and snow prevention, and is applicable to the outdoor natural environment.
Description
Technical field
The present invention relates to the PZT (piezoelectric transducer) field, particularly a kind of piezoelectric ceramic transducer that is suitable for outdoor use.
Background technology
PZT (piezoelectric transducer) has the emission sound wave and receives the function of sound wave, mainly is used as the probe of acoustic sounding product or the emitter of sound.PZT (piezoelectric transducer) can be launched sound wave applying under the condition of the signal of telecommunication, also can receive sound wave simultaneously, converts the signal of telecommunication to, realizes the conversion of acoustoelectric signal, is a kind of transducer unit that can work alone.
PZT (piezoelectric transducer) is widely used in data processing, information processing, communication, sonar, gyro, underwater sound device, passometer, laser, inkjet printing, ultrasonic cleaning, ultra-sonic welded, warning, and in the industry such as gas-fired equipment and technical field.
Piezoelectric ceramic transducer is a kind of PZT (piezoelectric transducer) commonly used in this area, it has the advantages that can launch simultaneously sound wave and receive sound wave, main application is by launch sound wave in air, when sound wave runs into the turbulent flow of wind, can produce faint echo-signal, the echo-signal of utilizing transducer to receive is calculated the function of wind turbulent flow information.Because the piezoelectric ceramic transducer sound wave is radiation in heavenwards, if be put into outdoor use, when meeting with rain, snow weather, sleet can enter into the vibrating diaphragm of transducer, causes the operational failure of vibrating diaphragm and piezoelectric ceramic piece.
At present, use piezoelectric ceramic as the principal mode of transducer, buzzer, loud speaker, ultrasonic transducer, underwater acoustic transducer etc. to be arranged.Buzzer is as alarm unit use; Loud speaker uses as the unit in sound equipment, as exposing the unit, when being used for outdoor use, can not adapt to the atrocious weather conditions such as rain, snow; Ultrasonic transducer is mainly used in supersonic cleaning machine, the ultrasonic atomizatio machine uses, and operating frequency is very high; Underwater acoustic transducer is used for underwater sound sonar to be used, and is not suitable for being used in air.Therefore, have can adapt to outdoor environment and as sound wave transmitting-receiving close put function the transducer kind seldom.
Conventional piezoelectric ceramic transducer shell mechanism is generally direct radiator type, and vibrating diaphragm directly contacts with air, there is no the rain and snow structure, therefore can not satisfy its user demand out of doors.Although can realize the function of rain and snow by shell being installed additional rainproof shell, the shell that installs additional has than high attenuation transducer sensitivity.So, the shell mechanism of needs redesign piezoelectric ceramic transducer.
Summary of the invention
For the deficiency that prior art exists, the present invention proposes a kind of piezoelectric ceramic transducer, is suitable for outdoor use.
The technical scheme that the present invention proposes is as follows:
A kind of piezoelectric ceramic transducer, comprise upper shell, lower house, vibrating diaphragm and piezoelectric ceramic lamination, it is characterized in that, also comprise poroid cover plate and reflection cap, described poroid cover plate is horizontally placed on the opening part at described upper shell top, common first spatial accommodation that forms of described poroid cover plate and described upper shell, described reflection cap are fixedly arranged on described poroid cover plate bottom surface, are arranged in described the first spatial accommodation; Inner second spatial accommodation that forms of described lower house, described vibrating diaphragm and described piezoelectric ceramic lamination are arranged in described the second spatial accommodation, and the two ends of described vibrating diaphragm are respectively fixed on the sidewall of described lower house, and the bottom of described vibrating diaphragm connects described piezoelectric ceramic lamination; Described the first spatial accommodation and described the second spatial accommodation connect by the passage of raising one's voice, and the described passage of raising one's voice is positioned at the top of described vibrating diaphragm, and described reflection cap covers in the top of the described passage of raising one's voice non-contactly.
Wherein, the internal structure of described piezoelectric ceramic lamination is respectively from top to bottom: the first double-side copper electrode leader, the first piezoelectric ceramic piece, middle copper electrode leader, the second piezoelectric ceramic piece, the second double-side copper electrode leader and damping fin, between above-mentioned adjacent component by as glued together in epoxyn etc.One end of middle copper electrode leader stretches out, in its extended end, the first rivet is set, the opposite end branch with respect to the outward extending end of middle copper electrode leader of the first and second double-side copper electrode leaders stretches out, these two extended end inside pressings respectively arrange the second rivet in pressing place.
Wherein, have two through holes in the bottom of described lower house, the holding wire that is connected to piezoelectric ceramic lamination two ends is connected described two through holes and is connected with external circuit with ground wire.When piezoelectric ceramic transducer carried out acoustic irradiation, the signal that is input to piezoelectric ceramic transducer by external circuit made piezoelectric ceramic transducer carry out acoustic irradiation; When piezoelectric ceramic transducer received sound wave, the own effect by the piezoelectric ceramic lamination converted the sound wave that receives to the signal of telecommunication, outputs to external circuit by holding wire and ground wire.
Wherein, holding wire is connected with the second rivet with the first rivet respectively with ground wire.
Beneficial effect of the present invention is that the piezoelectric ceramic transducer that proposes closes as transmitting-receiving and puts transducer and use, can be applicable to outdoor natural environment.
Description of drawings
Fig. 1 is the structure chart of the piezoelectric ceramic transducer that proposes of the present invention;
Fig. 2 is the structure chart of the lamination of piezoelectric ceramic shown in Fig. 1.
Description of reference numerals:
1: poroid cover plate 2: reflection cap 3: upper shell
4: lower house 5: vibrating diaphragm 6: the piezoelectric ceramic lamination
7: osculum 8: the passage of raising one's voice
61: the first double-side copper electrode leaders 62: middle copper electrode leader 63: damping fin
66: the second piezoelectric ceramic pieces of 65: the first rivets of 64: the first piezoelectric ceramic pieces
68: the second rivets of 67: the second double-side copper electrode leaders
Embodiment
The present invention is described further below in conjunction with drawings and Examples.
Piezoelectric ceramic transducer as shown in Figure 1, comprise upper shell 3, lower house 4, vibrating diaphragm 5 and piezoelectric ceramic lamination 6, it is characterized in that, also comprise poroid cover plate 1 and reflection cap 2, described poroid cover plate 1 is arranged at the opening part at described upper shell 3 tops, described poroid cover plate 1 and common first spatial accommodations that form of described upper shell 3, described reflection cap 2 are fixedly arranged on described poroid cover plate 1 bottom surface, are arranged in described the first spatial accommodation; Inner second spatial accommodation that forms of described lower house 4, described vibrating diaphragm 5 and described piezoelectric ceramic lamination 6 are arranged in described the second spatial accommodation, the two ends of described vibrating diaphragm 5 are respectively fixed on the sidewall of described lower house 4, and the bottom of described vibrating diaphragm 5 connects described piezoelectric ceramic lamination 6; Described the first spatial accommodation and described the second spatial accommodation connect by the passage 8 of raising one's voice, and the described passage 8 of raising one's voice is positioned at the top of described vibrating diaphragm 5, and described reflection cap 2 covers in the top of the described passage 8 of raising one's voice non-contactly.
Utilize the compound mode of this piezoelectric ceramic piece, vibrating diaphragm and shell, can make sound wave effectively from piezoelectric ceramic piece vibration, the amplification of vibrating diaphragm, the transmission by shell mechanism, radiative acoustic wave in the air.Because sound wave is radiation in heavenwards, have the vibrating diaphragm that sleet enters into transducer, cause the operational failure of vibrating diaphragm and piezoelectric ceramic piece, the present invention can prevent that above-mentioned phenomenon from producing.Due to reflection cap 2 being arranged, so sleet is difficult to directly to contact with piezoelectric ceramic lamination 6 with vibrating diaphragm 5, reduced the probability of vibrating diaphragm damage.
Wherein, the internal structure of described piezoelectric ceramic lamination 6 is followed successively by from top to bottom: the first double-side copper electrode leader 61, the first piezoelectric ceramic piece 64, middle copper electrode leader 62, the second piezoelectric ceramic piece 66, the second double-side copper electrode leader 67 and damping fin 63, and glued together by epoxyn between above-mentioned adjacent component.One end of middle copper electrode leader 62 stretches out, in its extended end, the first rivet 65 is set, the opposite end with respect to the outward extending end of middle copper electrode leader 62 of the first double-side copper electrode leader 61 and the second double-side copper electrode leader 67 stretches out respectively, these two extended end inside pressings respectively arrange the second rivet 68 in pressing place.
The effect of double-side copper electrode leader 61 is end conductings that make two of up and down piezoelectric ceramic piece 64 and 66.The effect of middle copper electrode leader 62 is the other end conductings that make two of up and down piezoelectric ceramic piece 64 and 66.The effect of piezoelectric ceramic piece 64 is conversions of acoustoelectric signal.
Wherein, have two through holes under described lower house 4, the holding wire that is connected to described piezoelectric ceramic lamination 6 two ends is connected with the external circuit (not shown) by described two through holes with ground wire.When described piezoelectric ceramic transducer carried out acoustic irradiation, the signal that is input to piezoelectric ceramic transducer by external circuit made piezoelectric ceramic transducer carry out acoustic irradiation; When piezoelectric ceramic transducer received sound wave, the own effect by piezoelectric ceramic lamination 6 converted the sound wave that receives to the signal of telecommunication, outputs to external circuit by holding wire and ground wire.
Wherein, holding wire and ground wire be connected with the second rivet 68 with the first rivet 65 respectively.
Preferably, also be provided with osculum 7 on the sidewall of upper shell 3 bottoms of described piezoelectric ceramic transducer, when rain enters upper shell 3 when inner, can discharge by osculum 7, can not cause damage to vibrating diaphragm 5.
Preferably, two of the first double-side copper electrode leader 61 and the second double-side copper electrode leader 67 extended end inside symmetrical pressings respectively.
Preferably, described poroid cover plate 1, reflection cap 2, upper shell 3, lower house 4, vibrating diaphragm 5 and the passage 8 of raising one's voice are coaxial at vertical direction.
Should be noted that at last above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment, the present invention is had been described in detail; those of ordinary skill in the field are to be understood that; still can modify or the part technical characterictic is equal to the specific embodiment of the present invention and replace and do not break away from the spirit of technical solution of the present invention, it all should be contained in the middle of the technical scheme scope that the present invention asks for protection.
Claims (8)
1. piezoelectric ceramic transducer, comprise upper shell (3), lower house (4), vibrating diaphragm (5) and piezoelectric ceramic lamination (6), it is characterized in that, also comprise poroid cover plate (1) and reflection cap (2), described poroid cover plate (1) is arranged at the opening part at described upper shell (3) top, described poroid cover plate (1) forms the first spatial accommodation jointly with described upper shell (3), described reflection cap (2) is fixedly arranged on described poroid cover plate (1) bottom surface, is arranged in described the first spatial accommodation; Inner second spatial accommodation that forms of described lower house (4), described vibrating diaphragm (5) and described piezoelectric ceramic lamination (6) are arranged in described the second spatial accommodation, the two ends of described vibrating diaphragm (5) are respectively fixed on the sidewall of described lower house (4), and the bottom of described vibrating diaphragm (5) connects described piezoelectric ceramic lamination (6); Described the first spatial accommodation and described the second spatial accommodation connect by the passage of raising one's voice (8), the described passage of raising one's voice (8) is positioned at the top of described vibrating diaphragm (5), and described reflection cap (2) covers in the top of the described passage of raising one's voice (8) non-contactly.
2. piezoelectric ceramic transducer as claimed in claim 1, wherein, the internal structure of described piezoelectric ceramic lamination (6) is followed successively by from top to bottom: the first double-side copper electrode leader (61), the first piezoelectric ceramic piece (64), middle copper electrode leader (62), the second piezoelectric ceramic piece (66), the second double-side copper electrode leader (67) and damping fin (63), and glued together between above-mentioned adjacent component; One end of middle copper electrode leader (62) stretches out, in its extended end, the first rivet (65) is set, the opposite end with respect to the outward extending end of middle copper electrode leader (62) of the first double-side copper electrode leader (61) and the second double-side copper electrode leader (67) stretches out respectively, these two extended end inside pressings respectively arrange the second rivet (68) in pressing place.
3. piezoelectric ceramic transducer as claimed in claim 2, wherein, have two through holes in the bottom of described lower house (4), described piezoelectric ceramic lamination (6) two ends are connected with respectively holding wire and ground wire, and described holding wire and described ground wire are connected to external circuit by described two through holes respectively.
4. piezoelectric ceramic transducer as claimed in claim 3, wherein, when described piezoelectric ceramic transducer carried out acoustic irradiation, the signal that is input to described piezoelectric ceramic transducer by described external circuit made described piezoelectric ceramic transducer carry out acoustic irradiation; When described piezoelectric ceramic transducer received sound wave, the own effect by described piezoelectric ceramic lamination converted the sound wave that receives to the signal of telecommunication, outputs to described external circuit by described holding wire and described ground wire.
5. piezoelectric ceramic transducer as claimed in claim 2, wherein, described gummed is realized by epoxyn.
6. piezoelectric ceramic transducer as claimed in claim 2, wherein, described pressing is symmetrical pressing.
7. piezoelectric ceramic transducer as claimed in claim 1 wherein, also is provided with osculum (7) on the sidewall of described upper shell (3) bottom.
8. as the described piezoelectric ceramic transducer of claim 1-7 any one, wherein, described poroid cover plate (1), reflection cap (2), upper shell (3), lower house (4), vibrating diaphragm (5) and the passage of raising one's voice (8) are coaxial at vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310105261.5A CN103152681B (en) | 2013-03-29 | 2013-03-29 | Piezoelectric ceramic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310105261.5A CN103152681B (en) | 2013-03-29 | 2013-03-29 | Piezoelectric ceramic transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103152681A true CN103152681A (en) | 2013-06-12 |
| CN103152681B CN103152681B (en) | 2015-07-01 |
Family
ID=48550506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310105261.5A Active CN103152681B (en) | 2013-03-29 | 2013-03-29 | Piezoelectric ceramic transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103152681B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433194A (en) * | 2013-08-14 | 2013-12-11 | 苏州华日金菱机械有限公司 | Ultrasonic transducer |
| CN104568126A (en) * | 2014-12-31 | 2015-04-29 | 北京长城电子装备有限责任公司 | Small deepwater data recorder |
| CN106504735A (en) * | 2016-12-29 | 2017-03-15 | 汉得利（常州）电子股份有限公司 | One kind is exempted to weld high frequency high sound pressure buzzer and production method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63123299A (en) * | 1986-11-12 | 1988-05-27 | Nec Corp | Manufacture for electroacoustic transducing device |
| CN2092840U (en) * | 1991-03-30 | 1992-01-08 | 沈元武 | Box baffle with waterproof loudspeaker |
| CN2812464Y (en) * | 2005-04-19 | 2006-08-30 | 北京马斯康电子有限公司 | Folding horn type piezoelectric loudspeaker |
| CN1905760A (en) * | 2005-07-27 | 2007-01-31 | 财团法人工业技术研究院 | Piezoelectric loudspeaker |
-
2013
- 2013-03-29 CN CN201310105261.5A patent/CN103152681B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63123299A (en) * | 1986-11-12 | 1988-05-27 | Nec Corp | Manufacture for electroacoustic transducing device |
| CN2092840U (en) * | 1991-03-30 | 1992-01-08 | 沈元武 | Box baffle with waterproof loudspeaker |
| CN2812464Y (en) * | 2005-04-19 | 2006-08-30 | 北京马斯康电子有限公司 | Folding horn type piezoelectric loudspeaker |
| CN1905760A (en) * | 2005-07-27 | 2007-01-31 | 财团法人工业技术研究院 | Piezoelectric loudspeaker |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433194A (en) * | 2013-08-14 | 2013-12-11 | 苏州华日金菱机械有限公司 | Ultrasonic transducer |
| CN103433194B (en) * | 2013-08-14 | 2016-05-18 | 北京中科奥倍超声波技术研究院 | Ultrasonic transducer |
| CN104568126A (en) * | 2014-12-31 | 2015-04-29 | 北京长城电子装备有限责任公司 | Small deepwater data recorder |
| CN104568126B (en) * | 2014-12-31 | 2017-09-12 | 北京长城电子装备有限责任公司 | Minimize deep-water data recorder |
| CN106504735A (en) * | 2016-12-29 | 2017-03-15 | 汉得利（常州）电子股份有限公司 | One kind is exempted to weld high frequency high sound pressure buzzer and production method |
| CN106504735B (en) * | 2016-12-29 | 2023-08-11 | 汉得利（常州）电子股份有限公司 | Welding-free high-frequency high-sound pressure buzzer and production method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103152681B (en) | 2015-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8325951B2 (en) | Miniature MEMS condenser microphone packages and fabrication method thereof | |
| WO2016124041A1 (en) | Speaker module | |
| WO2007047701A3 (en) | Acoustically communicating data signals across an electrical isolation barrier | |
| CN103152681B (en) | Piezoelectric ceramic transducer | |
| CN101252791A (en) | Device avoiding reflected sound wave interference | |
| CN211702390U (en) | MEMS microphone and electronic product | |
| WO2004007097A8 (en) | Acoustic-signal emitting device for vehicles | |
| CN102540191A (en) | Distance detecting device and distance detecting method of capacitive screen of mobile phone | |
| CN106954149A (en) | Minitype acoustic generator | |
| JP2008096359A (en) | Sensor | |
| CN204014062U (en) | There is the terminal of voice communication function | |
| CN107076840A (en) | Acoustic equipment with double MEMS devices | |
| EP2975432A1 (en) | Low cost hydrophone | |
| CN210927971U (en) | Combined sensor | |
| CN206042358U (en) | Miniature sounder | |
| JPH04501344A (en) | Microphone unidirectional enhancer | |
| CN1909742B (en) | Waterproof microphone | |
| JP6710206B2 (en) | Improved apparatus and method for observing the atmosphere | |
| CN205665402U (en) | On -vehicle big dipper equipment with anti -interference function | |
| CN109870181A (en) | A kind of ultrasonic sensor | |
| US20200407215A1 (en) | Mems microphone and mobile terminal | |
| US9467235B1 (en) | Circuits, systems and methods of hybrid electromagnetic and piezoelectric communicators | |
| CN209247086U (en) | A kind of flow transducer | |
| US8509034B2 (en) | Hydrophone and hydrophone assembly for performing stereophonic underwater sound recordings | |
| CN217654540U (en) | Ultrasonic sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |