CN2768361Y - Piezo-electric transmitting transducer capable of forming vibration by underwater music - Google Patents
Piezo-electric transmitting transducer capable of forming vibration by underwater music Download PDFInfo
- Publication number
- CN2768361Y CN2768361Y CN 200420096544 CN200420096544U CN2768361Y CN 2768361 Y CN2768361 Y CN 2768361Y CN 200420096544 CN200420096544 CN 200420096544 CN 200420096544 U CN200420096544 U CN 200420096544U CN 2768361 Y CN2768361 Y CN 2768361Y
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- piezoelectric
- housing
- music
- transmitting transducer
- screw
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Abstract
The utility model relates to a piezoelectric transmitting transducer capable of forming vibration by underwater music, which comprises piezoelectric sensing elements pasted on metal base plates, wherein the surfaces of the piezoelectric sensing elements face to both sides of a case and are fixed on the case. The place between the piezoelectric sensing elements and the case is sealed by polyamine resin adhesive. The polarization directions of the outer sides of two piezoelectric elements are opposite. The case is provided with a cable wire sealing opening, and at least one sealing ring is arranged in the sealing opening. A screw with a center hole is fixed in the sealing ring in screw connection. An electrical cable passes through the center hole of the screw and passes into the case. Two core wires of the piezoelectric sensing elements are respectively welded on a same electrical cable by two welding spots and used as a common electrode of the two piezoelectric elements. Acoustic load conducting material is pasted between the two base plates are by conducting adhesive and connected with the other electrode of the signal wires. The transducer of the utility model adopts a space supporting fixing means and double-face radiation, and thus compared with the prior art, the resonance frequency and the impedance are much lower.
Description
Technical field
The utility model relates to a kind of transducer, particularly relates to a kind of piezo-electric type water music body-sensing vibration transmitting transducer.
Background technology
Since ancient times, the mankind just recognize music to mood and physiological influence, and remove the misery of disease with music.Developed country is along with the continuous increase and the naturopathic rise of sub-health population quantity in recent years, and music treatment obtains people's attention and welcome gradually.The basis of music treatment is the music perception of human body.It is ear (sense of hearing) that approach is accepted in the perception of human body music.In the past, the Chinese music treatment is in the mode of listening to, Sino-Japanese Friendship Hospital of Ministry of Public Health combination of Chinese tradiational and Western medicine inferior health researchs department in 2002 introduce the body phonosensitive happy vibration mattress and the sofa of the little Mr. pine torches invention of all Japan director of musical therapy alliance, create palace sound body-sensing vibration therapy, and carried out the basis and the clinical research of palace sound body-sensing vibration therapy.
In view of finding in the propagation characteristic of sound wave in medium and the research, human body can not show a candle to music transmitting transducer effective in aqueous medium to the music sound wave perception of body phonosensitive happy vibration mattress or sofa.Its reason is the approaching of the acoustic impedance of human body and water, and with air several magnitudes of ratio mutually.So begin to carry out the development and the associated biomolecule effect study of water music body-sensing vibration transmitting transducer.
The present domestic report of piezoelectric speaker under water that has, its workplace is a swimming pool, and is all inequality with principle of the present utility model, structure.Piezoelectric speaker volume is big under water for this, and low-frequency effect is poor; What it was emphasized is that musical sound is propagated in water slightly, auditory nerve is reached be perceived as purpose.
Summary of the invention
The purpose of this utility model is, a kind of piezo-electric type water music body-sensing vibration transmitting transducer is provided, and overcomes the shortcoming that the happy transmitting transducer that vibrates mattress of existing body phonosensitive can not use in water.
The purpose of this utility model is to realize like this
The piezo-electric type water music body-sensing vibration transmitting transducer that the utility model provides comprises: 3,2 piezoelectric sensing elements 4 of 1,2 metal substrates of housing and watertight cable 9; It is characterized in that: also comprise acoustic load conductor material 5, sealing ring 7, Seal of Cables screw 8; Wherein piezoelectric sensing element 4 is bonded on the metal substrate 3, the face of piezoelectric sensing element 4 towards housing 1 both sides, and is fixed on the housing 1; With 2 sealings of polyamine fat glue, the outside polarised direction of two piezoelectric elements 4 is opposite between piezoelectric sensing element 4 and the housing 1; Described housing 1 has the cable seal, at least one sealing ring 7 is set in the sealing mouth, screw togather in the sealing ring 7 and fix a screw 8 that has a centre bore, a cable 10 penetrates in the housing 1 by screw 8 centre bores, two heart yearns of 2 piezoelectric sensing elements 4, with two solder joints 6, be welded in respectively same cable 10 on, as a common electrode of two piezoelectric elements; With acoustic load conductor material 5 of conducting resinl bonding, acoustic load conductor material 5 is connected in another utmost point 11. of holding wire in the middle of two substrates
Described cable 9 is a watertight cable.
Described sealing ring 7 is provided with 3-5 rubber washer, and when screwing tight on housing with perforation screw 8, the elastic reaction of rubber washer will expand to diametric(al), and closed hole inwall and cable insulation are tightly pushed simultaneously, has promptly realized the sealing in the cavity.
Described piezoelectric sensing element 4 comprises: PZT-4 emission type piezoelectric ceramic and resistant to elevated temperatures WO-2 emission type piezoelectric ceramic, its diameter 50mm-100mm, thickness 0.5mm-1.0mm.
The thickness of described metal substrate 3 is 1.2 times of piezoelectric element, and its external diameter and housing 1 inner chamber are complementary,
Described acoustic load conductor material 5, housing 1 or metal substrate 3, equal material such as copper, aluminium and stainless steel, its acoustic load conductor material 5, diameter be half of piezoelectric element, it is highly decided on the size of housing.
Advantage of the present utility model is:
A) a) owing to adopt two same piezoelectric sensing elements 4, be bonded in respectively on two same metal substrates 3, be individually fixed in the both sides of housing, promptly form the device of two two laminate patches " flexural vibrations ".The polarised direction of two relative housings of piezoelectric sensing element is opposite, in order that allow them when vibration, for any some same-phases in space, to obtain than the single pair of Oscillation Amplitude that laminate patch is stronger.
B) " " fixing mode owing to adopt b), promptly the mode of fixed substrate 3 on housing is:
When the edge of substrate both sides is subjected to clamping, its contact area is few more good more, optimal situation is: substrate 3, the contact point of above and below and gripping object respectively is garden circle (or being close to a garden circle), the impedance also minimum (other fixed form relatively) during minimum, the resonance of the fundamental resonance frequency of two laminate patches this moment.
C) comprise also an acoustic load conductor material 5 is set in housing 1 c) that it is connected in another utmost point 11 of holding wire.Its effect is to make two two laminate patches form mutual radiation by 5, thereby resonance frequency further is reduced to original half.
D) d) adopt polyamine fat glue 2 to make the watertight and the electrical insulating material of piezoelectric sensing element 4,, must piezoelectric ceramic 4 be coated, avoid being communicated with short circuit with water with poly-ammonia limb glue 2 because water is the conductor of electricity; Simultaneously, the acoustic impedance of the acoustic impedance of polyurethane glue 2 and WATER AS FLOW MEDIUM and human body is more consistent, is convenient to music sound wave in water and propagation, the radiation of human body, realizes the musical object inductance vibration.
Description of drawings
Fig. 1 is a piezo-electric type water music body-sensing vibration transmitting transducer structure chart of the present utility model
Embodiment
With reference to figure, figure middle shell 1; Polyamine fat glue 2; Metal substrate 3; Piezoelectric sensing element 4, acoustic load conductor material 5; Solder joint 6; Sealing ring 7, sealed penetration screw 8; Watertight cable 9; Cable core 10 is a utmost point; Another utmost point 11.
Piezoelectric sensing element 4 adopts PZT (piezoelectric ceramic), its diameter 50mm-100mm, and the disk of thickness 0.5mm-1.0mm, it has piezoelectric property, and when promptly being subjected to the external force effect, it produces electric charge; Otherwise, give electric charge its generation deformation.Therefore, the music electrical signal of input alternation, it just sends the chatter of music.According to the characteristics of the utility model palace sound music, major part is the conspicuous low frequency of hundreds of, and the finite volume of bath simultaneously needs the music transmitting transducer of small size.This is a contradiction to transmitting transducer.(objective law of the natural resonance frequency of any object is: the big more resonance frequency of object is low more, more little resonance frequency is high more) for addressing this problem normally used pair of laminate patch of underwater sound circle " flexural vibrations " mode that adopts, being about to piezoelectric sensing element 4 is bonded on stainless steel or the copper base 3, its diameter is between 80mm-120mm, thickness is 1.2 times of piezoelectric element, this complex is fixed on the housing 1, and fixing mode is " ", compresses a line at periphery.The mode of fixed substrate 3 on housing is: make the edge of substrate both sides be subjected to clamping, its contact area is few more good more, optimal situation is: the contact point of substrate 3 above and below and gripping object respectively is garden circle (or being close to a garden circle), and this fixed form is commonly referred to " ".Benefit for two laminate patches " flexural vibrations " is: " " than other rigid condition as: resonance frequency, the impedance of states such as " embedding is dead ", " freedom " are lower.It is a kind of mounting means that invention is adopted.For increasing the radiation acoustical power, adopt two-sided radiation, the outside polarised direction of two piezoelectric elements 4 is opposite, and two solder joints 6 all are welded on the same holding wire 10, make the vibration phase unanimity; For further reducing the resonance frequency of fundamental frequency, with acoustic load conductor material 5 of conducting resinl bonding, as copper, aluminium and stainless steel etc., its diameter is half of piezoelectric element, highly decides on the size of housing in the middle of two substrates.
Described housing 1 has the cable seal, is set to 3 sealing rings 7 in the sealing mouth, and it is had a centre bore in seal screw 8 screws tight fixing, and has played sealing function.A cable 10 penetrates in the housing 1 by screw 8 centre bores, and 2 piezoelectric sensing elements 4 are welded on the same cable by two solder joints 6, as a utmost point 10; With acoustic load conductor material 5 of conducting resinl bonding, acoustic load conductor material 5 adopts a block length 10mm in the middle of two substrates, the copper of diameter 25-50mm, aluminium or stainless steel material all can, this acoustic load conductor material 5 is connected in another utmost point 11 of holding wire.Its effect is to make two two laminate patches form mutual radiation by acoustic load conductor material 5, thereby resonance frequency is further reduced, to original half.Polyamine fat glue 2 is a kind of watertight electrical insulating materials, and is not only water-fast but also with water more consistent acoustic impedance coupling is arranged.7,8th, Seal of Cables mouth, the 9th, watertight cable.
Environment for use is in the water of bathing pool, bathtub, bath bucket and foot basin container etc.; Water temperature 40-50 degree Celsius; Because the limitation of environment for use, the physical dimension of its transmitting transducer can not be big; Because the frequency spectrum major part of mode of ancient Chinese music music is in low-frequency range (100HZ-1000HZ), so the low frequencies of this transmitting transducer is effective, bandwidth, heat resistance is good, long working life.Be suitable for the emission of water Middle Palace sound music, and produce body-sensing vibration.Thereby can realize the human-body biological Study on Effect.
Claims (5)
1. a piezo-electric type water music body-sensing vibration transmitting transducer comprises: housing (1), 2 metal substrates (3), 2 piezoelectric sensing elements (4) and watertight cable (9); It is characterized in that: also comprise acoustic load conductor material (5), sealing ring (7), Seal of Cables screw (8); Wherein piezoelectric sensing element (4) is bonded on the metal substrate (3), the face of piezoelectric sensing element (4) towards housing (1) both sides, and is fixed on the housing (1); With polyamine fat glue (2) sealing, the outside polarised direction of two piezoelectric elements (4) is opposite between piezoelectric sensing element (4) and the housing (1); Described housing (1) has the cable seal, at least one sealing ring (7) is set in the sealing mouth, screw togather in the sealing ring (7) and fix a screw (8) that has a centre bore, a cable (10) penetrates in the housing (1) by screw (8) centre bore, two heart yearns of 2 piezoelectric sensing elements (4), with two solder joints (6), be welded in respectively same cable (10) on, as a common electrode of two piezoelectric elements; With a conducting resinl bonding acoustic load conductor material (5), acoustic load conductor material (5) is connected in another utmost point (11) of holding wire in the middle of two substrates.
2. by the described piezo-electric type water music of claim 1 body-sensing vibration transmitting transducer, it is characterized in that: described sealing ring (7) is provided with 3-5 rubber washer.
3. by the described piezo-electric type water music of claim 1 body-sensing vibration transmitting transducer, it is characterized in that: described piezoelectric sensing element (4) comprising: PZT-4 emission type piezoelectric ceramic and resistant to elevated temperatures WO-2 emission type piezoelectric ceramic, its diameter 50mm-100mm, thickness 0.5mm-1.0mm.
4. by the described piezo-electric type water music of claim 1 body-sensing vibration transmitting transducer, it is characterized in that: the thickness of described metal substrate (3) is 1.2 times of piezoelectric element, and its external diameter and housing (1) inner chamber is complementary.
5. by the described piezo-electric type water music of claim 1 body-sensing vibration transmitting transducer, it is characterized in that: described acoustic load conductor material (5) housing (1) or metal substrate (3), make by copper, aluminium and stainless steel material, the diameter of its acoustic load conductor material (5) is half of piezoelectric element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420096544 CN2768361Y (en) | 2004-09-30 | 2004-09-30 | Piezo-electric transmitting transducer capable of forming vibration by underwater music |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420096544 CN2768361Y (en) | 2004-09-30 | 2004-09-30 | Piezo-electric transmitting transducer capable of forming vibration by underwater music |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2768361Y true CN2768361Y (en) | 2006-03-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420096544 Expired - Lifetime CN2768361Y (en) | 2004-09-30 | 2004-09-30 | Piezo-electric transmitting transducer capable of forming vibration by underwater music |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2768361Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387363C (en) * | 2004-08-31 | 2008-05-14 | 中国科学院声学研究所 | Music vibration transmission piezoelectric transducer in water |
| CN102450035A (en) * | 2010-03-29 | 2012-05-09 | 松下电器产业株式会社 | Piezoelectric sound converter |
-
2004
- 2004-09-30 CN CN 200420096544 patent/CN2768361Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387363C (en) * | 2004-08-31 | 2008-05-14 | 中国科学院声学研究所 | Music vibration transmission piezoelectric transducer in water |
| CN102450035A (en) * | 2010-03-29 | 2012-05-09 | 松下电器产业株式会社 | Piezoelectric sound converter |
| CN102450035B (en) * | 2010-03-29 | 2016-03-16 | 松下知识产权经营株式会社 | Piezoelectric electroacoustic transducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080514 |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080514 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |