CN111208361A - Piezoelectric ceramic acoustic testing device - Google Patents
Piezoelectric ceramic acoustic testing device Download PDFInfo
- Publication number
- CN111208361A CN111208361A CN202010110689.9A CN202010110689A CN111208361A CN 111208361 A CN111208361 A CN 111208361A CN 202010110689 A CN202010110689 A CN 202010110689A CN 111208361 A CN111208361 A CN 111208361A
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- ring
- pressure ring
- piezoelectric ceramic
- testing device
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- 239000000919 ceramic Substances 0.000 title claims abstract description 46
- 238000012360 testing method Methods 0.000 title claims abstract description 22
- 238000003825 pressing Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 10
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000002604 ultrasonography Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/22—Measuring piezoelectric properties
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a piezoelectric ceramic acoustic testing device which comprises a clamp base, an anode support, an anode pressure ring and a cathode pressure ring, wherein the anode support, the anode pressure ring and the cathode pressure ring can be detachably mounted on the clamp base from bottom to top, an inner ring of piezoelectric ceramic is supported on the top end face of the anode support and is sealed and fixed through the anode pressure ring, an outer ring of the piezoelectric ceramic is supported on the peripheral inner wall of the clamp base and is sealed and fixed through the cathode pressure ring, a cathode lead is connected onto the cathode pressure ring, the cathode pressure ring and a concave surface of the piezoelectric ceramic are in conductive connection through a conductive connecting piece, the anode lead is connected onto the anode support, and the anode support is in conductive contact with the convex surface of the piezoelectric ceramic. The piezoelectric ceramic testing device can be installed and disassembled at any time, can be used for testing only by installing the piezoelectric ceramic, does not need to be welded with a lead, and cannot cause any damage to the piezoelectric ceramic.
Description
Technical Field
The invention relates to a piezoelectric ceramic acoustic testing device, and belongs to the field of medical instruments.
Background
Ultrasound is a mechanical wave generated by the vibration of a wafer (acoustic source) and caused to propagate by compressing and expanding a medium, and medical ultrasound generally refers to acoustic waves having a frequency in the interval of 20kHz to 10 MHz. Because the attenuation of the ultrasound in human tissues is small, and the diagnosis and treatment effects can be achieved by utilizing three acoustic effects of fluctuation effect, mechanical effect, thermal effect and the like of the ultrasound.
The core of the ultrasonic transducer is a piezoelectric vibrator, so the accuracy of the electrical and acoustic parameters of the piezoelectric vibrator is particularly important, and the distribution and position accuracy requirements of the focusing target point are higher for therapeutic ultrasound. The piezoelectric ceramic testing electrical parameters meet the indexes and cannot completely prove that the acoustic distribution and the position are accurate, in order to detect unqualified products before packaging and avoid wasting manpower and material resources on the unqualified piezoelectric ceramics, the invention provides the piezoelectric ceramic acoustic testing device, the piezoelectric ceramics can be tested only by being installed, a lead does not need to be welded, and the piezoelectric ceramics cannot be damaged at all.
Disclosure of Invention
The invention aims to solve the engineering problem and detect piezoelectric ceramics with unqualified acoustic indexes in advance to save cost, thereby designing the piezoelectric ceramic acoustic testing device.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a piezoceramics acoustics testing arrangement, its includes anchor clamps base, anodal support, anodal clamping ring and negative pole clamping ring are from up all demountable installation on the anchor clamps base down, and piezoceramics's inner circle supports on the terminal surface of the top of anodal support to seal fixedly through anodal clamping ring, and piezoceramics's outer lane supports on the inner wall all around of anchor clamps base, and seals fixedly through the negative pole clamping ring, be connected with the negative pole lead wire on the negative pole clamping ring to carry out electrically conductive connection through electrically conductive connecting piece between negative pole clamping ring and piezoceramics's the concave surface, be connected with the anodal lead wire on the anodal support to anodal support contacts with piezoceramics's convex surface conductivity.
Further, the clamp base is of an inward concave integrated structure, and a step-shaped cylindrical boss used for mounting the anode support and the anode pressure ring is arranged inside the clamp base.
Furthermore, the top end face of the anode support is a positioning face of the piezoelectric ceramic inner ring, and the positioning face is a concave arc face matched with the piezoelectric ceramic concave face.
Furthermore, through holes are formed in the positive electrode pressure ring and the negative electrode pressure ring, and the positive electrode pressure ring and the negative electrode pressure ring are fixed on the clamp base through screws.
Furthermore, an inner ring sealing ring is arranged between the inner ring of the piezoelectric ceramic and the positive electrode pressure ring.
Furthermore, an outer ring sealing gasket is arranged around the outer ring of the piezoelectric ceramic.
Furthermore, the conductive connecting piece adopts a conductive spring, one end of the conductive spring is connected below the negative electrode pressing ring, and the other end of the conductive spring is in elastic contact with the concave surface of the piezoelectric ceramic. Preferably, the number of the conductive springs is four, and every two conductive springs are arranged oppositely.
Furthermore, the positive lead is connected to the positive support through a line pressing screw, and the negative lead is connected to the negative pressure ring through a line pressing screw.
Furthermore, a wiring groove for leading out a cathode lead is arranged on the clamp base.
The invention has the beneficial effects that: the invention can be installed and disassembled at any time, is reasonably positioned and sealed, can test the acoustic characteristics of the piezoelectric ceramics without welding the positive and negative leads, and can accurately test the acoustic characteristics without causing any damage to the piezoelectric ceramics. For the treatment ultrasound, the distribution and position accuracy requirements of the focusing target points are very high, unqualified piezoelectric ceramics are judged and screened in advance in engineering, and waste of manpower and material resources can be avoided.
Drawings
Fig. 1 is an overall schematic view of the invention after assembly.
Fig. 2 is a disassembled schematic view of the present invention.
Fig. 3 is an exploded perspective view of the present invention.
Labeled as: 1-a clamp base, 2-piezoelectric ceramics, 3-an anode support, 4-an anode pressure ring, 5-an inner ring sealing ring, 6-a cathode pressure ring, 7-a conductive spring, 8-an outer ring sealing gasket, 9-an anode lead, 10-a cathode lead, 11-a line pressing screw and 12-a line wiring groove.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
As shown in fig. 1 to 3, a piezoceramics acoustics testing arrangement, it includes anchor clamps base 1, anodal support 3, anodal clamping ring 4 and negative pole clamping ring 6 from up all can be dismantled and install on anchor clamps base 1 down, and piezoceramics 2's inner circle supports on anodal support 3's top terminal surface to seal fixedly through anodal clamping ring 4, piezoceramics 2's outer lane supports on anchor clamps base 1's inner wall all around, and seals fixedly through negative pole clamping ring 6, be connected with negative pole lead wire 10 on the negative pole clamping ring 6 to carry out the electrically conductive connection through four conducting spring 7 between negative pole clamping ring 6 and piezoceramics 2's the concave surface, be connected with anodal lead wire 9 on anodal support 3 to anodal support 3 contacts with piezoceramics 2's convex surface conductivity.
In this embodiment, the fixture base 1 is an inward concave type integrated structure, and a stepped cylindrical boss for mounting the anode support 3 and the anode compression ring 4 is arranged inside the fixture base 1. The top end face of the anode support 3 is a positioning face of the piezoelectric ceramic inner ring, and the positioning face is a concave cambered surface matched with the piezoelectric ceramic concave surface. Through holes are formed in the positive electrode pressing ring 4 and the negative electrode pressing ring 6, and the positive electrode pressing ring 4 and the negative electrode pressing ring 6 are fixed on the clamp base 1 through screws.
In this embodiment, an inner ring seal ring 5 is arranged between the inner ring of the piezoelectric ceramic 2 and the positive electrode pressure ring 4. And an outer ring sealing gasket 8 is arranged around the outer ring of the piezoelectric ceramic 2.
In this embodiment, the positive lead 9 is connected to the positive support 3 through a wire pressing screw 11, the negative lead 10 is connected to the negative pressure ring 6 through the wire pressing screw 11, and a wire trough 12 for leading out the negative lead is arranged on the clamp base 1.
The manufacturing principle of the invention is as follows: firstly, a conductive anode support is arranged on a clamp base through a positioning cylinder and a step surface; secondly, positioning and mounting the piezoelectric ceramic through a positioning cylinder and a spherical surface of the anode support; then, the inner ring is fixedly sealed through an inner ring sealing ring and the anode pressure ring, the outer ring is fixedly sealed through an outer ring sealing gasket and the cathode pressure ring, through holes are formed in the anode pressure ring and the cathode pressure ring, and the anode pressure ring and the cathode pressure ring can be fixed on the bracket through screws; in the aspect of a lead, an anode lead is pressed on a conductive anode support through a line pressing screw in advance, the anode support can be led out of an anode through contact with a piezoelectric ceramic anode (piezoelectric ceramic convex surface), a cathode lead is pressed on a conductive cathode compression ring through a line groove, the cathode compression ring and a piezoelectric ceramic cathode (piezoelectric ceramic concave surface) are in elastic contact through a conductive spring, the cathode can be led out of a cathode, and the leads are respectively pressed through the line pressing screw. The piezoelectric ceramic acoustic testing device can be conveniently and rapidly installed and disassembled at any time, is accurate in positioning and reliable in sealing, and can accurately test acoustic characteristics without causing any damage to piezoelectric ceramic.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by using equivalent substitution methods fall within the scope of the present invention.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Claims (10)
1. The utility model provides a piezoceramics acoustics testing arrangement, a serial communication port, including anchor clamps base, anodal support, anodal clamping ring and negative pole clamping ring are from up all demountable installation on the anchor clamps base down, and piezoceramics's inner circle supports on the terminal surface of the top of anodal support to seal fixedly through anodal clamping ring, piezoceramics's outer lane supports on the inner wall all around of anchor clamps base, and seals fixedly through the negative pole clamping ring, be connected with the negative pole lead wire on the negative pole clamping ring to carry out the electricity conduction through conductive connecting piece between negative pole clamping ring and piezoceramics's the concave surface and be connected, be connected with the anodal lead wire on the anodal support to anodal support contacts with piezoceramics's convex.
2. The acoustic testing device for the piezoelectric ceramics according to claim 1, wherein the fixture base is a concave-type integrated structure, and a stepped cylindrical boss for mounting the positive support and the positive pressure ring is arranged inside the fixture base.
3. The piezoceramic acoustic testing device according to claim 1 or 2, wherein the top end face of the positive pole support is a positioning surface of the piezoceramic inner ring, and the positioning surface is a concave cambered surface matched with the concave surface of the piezoceramic.
4. The acoustic testing device for the piezoelectric ceramics according to claim 1 or 2, wherein the positive electrode pressure ring and the negative electrode pressure ring are provided with through holes, and the positive electrode pressure ring and the negative electrode pressure ring are fixed on the clamp base through screws.
5. The acoustic testing device for piezoelectric ceramics according to claim 1, wherein an inner ring sealing ring is arranged between the inner ring of the piezoelectric ceramics and the positive electrode pressure ring.
6. The apparatus of claim 1, wherein an outer ring of the piezoelectric ceramic is provided with an outer ring of sealing gasket.
7. The acoustic testing device for the piezoelectric ceramics according to claim 1, wherein the conductive connecting member is a conductive spring, one end of the conductive spring is connected below the negative electrode pressure ring, and the other end of the conductive spring is in elastic contact with the concave surface of the piezoelectric ceramics.
8. The apparatus of claim 7, wherein the number of the conductive springs is four, and two of the springs are opposite to each other.
9. The apparatus of claim 1, wherein the positive lead is connected to the positive support via a pressing screw, and the negative lead is connected to the negative pressing ring via a pressing screw.
10. The acoustic testing device for piezoelectric ceramics of claim 1 or 9, wherein the fixture base is provided with a wiring groove for leading out a negative lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010110689.9A CN111208361A (en) | 2020-02-24 | 2020-02-24 | Piezoelectric ceramic acoustic testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010110689.9A CN111208361A (en) | 2020-02-24 | 2020-02-24 | Piezoelectric ceramic acoustic testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111208361A true CN111208361A (en) | 2020-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010110689.9A Pending CN111208361A (en) | 2020-02-24 | 2020-02-24 | Piezoelectric ceramic acoustic testing device |
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| Country | Link |
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| CN (1) | CN111208361A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113566914A (en) * | 2021-07-16 | 2021-10-29 | 浙江启尔机电技术有限公司 | Non-welding type piezoelectric vibrator connecting device and ultrasonic flow detection device adopting same |
-
2020
- 2020-02-24 CN CN202010110689.9A patent/CN111208361A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113566914A (en) * | 2021-07-16 | 2021-10-29 | 浙江启尔机电技术有限公司 | Non-welding type piezoelectric vibrator connecting device and ultrasonic flow detection device adopting same |
| CN113566914B (en) * | 2021-07-16 | 2023-08-11 | 浙江启尔机电技术有限公司 | Non-welding type piezoelectric vibrator connecting device and ultrasonic flow detection device adopting same |
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