CN207723036U - Welding ultrasonic transducer at a kind of piezoelectric element - Google Patents
Welding ultrasonic transducer at a kind of piezoelectric element Download PDFInfo
- Publication number
- CN207723036U CN207723036U CN201721903444.1U CN201721903444U CN207723036U CN 207723036 U CN207723036 U CN 207723036U CN 201721903444 U CN201721903444 U CN 201721903444U CN 207723036 U CN207723036 U CN 207723036U
- Authority
- CN
- China
- Prior art keywords
- piezoelectricity
- piezoelectric element
- protective cover
- pole piece
- ultrasonic transducer
- 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.)
- Active
Links
Landscapes
- Transducers For Ultrasonic Waves (AREA)
Abstract
Welding ultrasonic transducer at a kind of piezoelectric element, is related to transducer technology field, is easily damaged for solving the problems, such as that ultrasonic transducer in the prior art has the pad being located at piezoelectric element position.Welding ultrasonic transducer at a kind of piezoelectric element, including encapsulating housing, piezoelectric element, piezoelectricity protective cover, pole piece and two conducting wires, piezoelectricity chamber is equipped in the encapsulating housing, the piezoelectricity protective cover is used for the lower end closed of piezoelectricity chamber, the piezoelectric element and the pole piece are respectively provided in piezoelectricity chamber, the lower surface of the pole piece and the fitting of the upper surface of the piezoelectric element, acoustic coupling layer is equipped at the position between more than the piezoelectricity protective cover and below the lower surface of piezoelectric element, material that can be conductive is respectively adopted in the piezoelectricity protective cover and the pole piece, one conducting wire and piezoelectricity protective cover electrical connection, another conducting wire and pole piece electrical connection.Advantageous effect is that wiring point is not easy to be damaged.
Description
Technical field
The utility model is related to transducer technology field, welding ultrasonic transduction at specifically a kind of piezoelectric element
Device.
Background technology
Ultrasonic transducer belongs to a kind of mechanical energy and converts piezoelectric ceramics class device with electric energy, because ultrasonic transducer is ultrasound
The flow measurement device of wave flowmeter need to be installed in flowmeter and be contacted with fluid, transducer application in fluid flow timing, because
Segment fluid flow is high temperature fluid, if the fluid in ultrasonic calorimeter is high-temperature water quality；Transducer application in gas flow timing,
If being in direct contact gas, high-frequency signal, which is in direct contact gas, can bring some potential safety problems, and such installation environment is just
It is required that it is hermetically sealed to energy converter progress, to reduce influence of the fluid to energy converter.
The prior art is divided into two classes substantially to the sealing means of energy converter, and one kind is that piezoelectric element is directly sealed to encapsulation
In shell, the second class is sealing cavity to be arranged in encapsulating housing piezoelectric element is placed in one.Both sealing means exist
The shortcomings that be respectively：The above-mentioned first kind, piezoelectric element is sealed directly in encapsulating housing because around piezoelectric element with sealing
Glue is in close contact, and fluid sealant can generate echo to piezoelectric element to be influenced, and fluid sealant is in the state of high-temperature expansion when encapsulating, cold
But fluid sealant is shunk after, may drive the loosening of the lead solder-joint of piezoelectric element.Above-mentioned second class will be arranged in encapsulating housing
Piezoelectric element is placed in one by sealing cavity, this is also opposite, because piezoelectric element will be equipped with lead to export signal, so
Even also having the hole by conducting wire after hermetically sealed in caulking gum, lead to water inlet, piezoelectricity in piezoelectric element sealing cavity
The loosening of the lead solder-joint of element.
The output of prior art transducer signal is that signal output lead or signal output metal are drawn angle and be directly welded in
A variety of modes that output signal is directly welded with piezoelectric element such as the surface of piezoelectric element.It is this directly piezoelectric element surface into
The mode of row welding has the disadvantage that：1, because piezoelectric element surface be not easy it is brave connect, generally select superfine conducting wire to be soldered to piezoelectricity
The conducting wire more slightly put of transferring again after element surface is drawn, and because piezoelectric element surface is small with conductor contact surface, is easily disconnected.2 use
The big metal of contact surface draws angle and is welded with piezoelectric element, and when changing because flowing through medium temperature, metal draws angle and piezoelectricity
The shrinkage rates difference of element also easily causes solder joint to fall off, to influence the signal output of piezoelectric element.
So ultrasonic transducer in the prior art is asked in the presence of what the pad being located at piezoelectric element position was easily damaged
Topic.
Utility model content
The purpose of this utility model is to provide welding ultrasonic transducers at a kind of piezoelectric element, for solving existing skill
Ultrasonic transducer in art has that the pad being located at piezoelectric element position is easily damaged.
The technical solution adopted by the utility model to solve its technical problems is that：
Welding ultrasonic transducer at a kind of piezoelectric element, including encapsulating housing, piezoelectric element, piezoelectricity protective cover, pole piece
With two conducting wires, it is equipped with piezoelectricity chamber in the encapsulating housing, the piezoelectricity protective cover is used for the lower end closed of piezoelectricity chamber, described
Piezoelectric element and the pole piece are respectively provided in piezoelectricity chamber, the upper table face paste of the lower surface of the pole piece and the piezoelectric element
It closes, acoustic coupling layer, institute is equipped at the position between more than the piezoelectricity protective cover and below the lower surface of piezoelectric element
It states piezoelectricity protective cover and the material for capableing of conduction is respectively adopted in the pole piece, a conducting wire and the piezoelectricity protective cover are electrically connected
It connects, another conducting wire and pole piece electrical connection.
Further, it is equipped between the piezoelectricity protective cover and the encapsulating housing for by the piezoelectricity chamber and extraneous ring
The sealant of border isolation.
Further, wire connection cavity is equipped in the encapsulating housing, the pole piece includes pole piece pin, wire connection cavity and the pressure
The pole piece pilot hole passed through for pole piece pin is equipped between electric chamber, one end of pole piece pin is located in wire connection cavity, the piezoelectricity protection
Cover includes protective cover pin, and the encapsulating housing is equipped with the protective cover pilot hole passed through for protective cover pin, protective cover pin
One end is located in wire connection cavity, and a conducting wire is located at the part in wire connection cavity with pole piece pin and is electrically connected, and is led described in another
Line is located at the part in wire connection cavity with protective cover pin and is electrically connected.
Further, fluid sealant is filled in the wire connection cavity.
Further, the encapsulating housing is being equipped with sealing groove, the sealing at the position of piezoelectricity protective cover surrounding
Fluid sealant is filled in slot, the fluid sealant in sealing groove can cling the piezoelectricity protective cover in the encapsulating housing
On.
Further, the lower end of the protective cover pilot hole is connected to the sealing groove.
The utility model has the beneficial effects that：
Welding ultrasonic transducer at a kind of piezoelectric element provided by the utility model, the utility model pass through setting sound coupling
It closes layer, piezoelectricity chamber, piezoelectricity protective cover, pole piece and piezoelectric element to avoid and occur solder joint on the piezoelectric element, realizes piezoelectricity member
No-welding-spot on part, while capacitance characteristic is followed, it using piezoelectricity protective cover and pole piece come connecting wire, realizes the transmission of signal, solves
The problem of pad existing in the prior art at piezoelectric element position of having determined is easily damaged, it is steady to realize detection signal
Fixed transmission, improves the service life and performance of the utility model.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
In figure：It is more than 1 piezoelectricity protective cover, 2 acoustic coupling layers, 3 piezoelectricity chambers, 4 piezoelectricity protective covers, 5 pole piece pilot holes, 6 pole pieces, 7
Pole piece pin, 8 first tie points, 9 encapsulating housings, 10 wire connection cavities, 11 conducting wires, 12 second wiring points, 13 protective cover pins, 14 protect
Shield pilot hole, 15 sealing grooves, 16 piezoelectric elements.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model
Apply example, the every other embodiment that those of ordinary skill in the art are obtained without making creative work, all
Belong to the range of the utility model protection.
As shown in Figure 1, the utility model includes encapsulating housing 9, piezoelectric element 16, piezoelectricity protective cover 4, pole piece 6 and two
Conducting wire 11 is equipped with piezoelectricity chamber 3 in encapsulating housing 9.Piezoelectricity protective cover 4 is used for the lower end closed of piezoelectricity chamber 3, piezoelectric element and pole
Piece 6 is respectively provided in piezoelectricity chamber 3, the upper surface fitting of the lower surface of pole piece 6 and piezoelectric element 16, positioned at piezoelectricity protective cover with
Upper 1 and piezoelectric element 16 lower surface below between position at be equipped with acoustic coupling layer 2.Piezoelectricity protective cover 4 and pole piece 6 are adopted respectively
With material that can be conductive, a conducting wire 11 and piezoelectricity protective cover 4 are electrically connected, and another conducting wire 11 and pole piece 6 are electrically connected.
As shown in Figure 1, being equipped between piezoelectricity protective cover 4 and encapsulating housing 9 for piezoelectricity chamber 3 to be isolated with external environment
Sealant.Wire connection cavity 10 is equipped in encapsulating housing 9, pole piece 6 includes pole piece pin 7, is equipped with and supplies between wire connection cavity 10 and piezoelectricity chamber 3
One end of the pole piece pilot hole 5 that pole piece pin 7 passes through, pole piece pin 7 is located in wire connection cavity 10.Piezoelectricity protective cover 4 includes protective cover
Pin 13, encapsulating housing 9 are equipped with the protective cover pilot hole 14 passed through for protective cover pin 13, and one end of protective cover pin 13 is located at
In wire connection cavity 10.One conducting wire 11 is located at the part in wire connection cavity 10 with pole piece pin 7 and is electrically connected, such as passes through the first wiring point
8 are electrically connected with pole piece pin 7；Another conducting wire 11 is located at the part in wire connection cavity 10 with protective cover pin 13 and is electrically connected, such as
It is electrically connected with protective cover pin 13 by the second wiring point 12.Fluid sealant is filled in wire connection cavity 10.Encapsulating housing 9 is in place
It is equipped with sealing groove 15 at the position of 4 surrounding of piezoelectricity protective cover, is filled with fluid sealant in sealing groove 15, is located in sealing groove 15
Fluid sealant can cling piezoelectricity protective cover 4 on encapsulating housing 9.The lower end of protective cover pilot hole 14 is connected to sealing groove 15.
As shown in Figure 1, the utility model is by being arranged acoustic coupling layer 2, piezoelectricity chamber 3, piezoelectricity protective cover 4, pole piece 6 and piezoelectricity
Element 16, which avoids on the piezoelectric element, 16 there is solder joint, realizes no-welding-spot on piezoelectric element, while following capacitance characteristic, profit
With piezoelectricity protective cover 4 and pole piece 6 come connecting wire, the transmission of signal is realized, solve existing in the prior art positioned at piezoelectricity
The problem of pad at position of components is easily damaged realizes detection signal stabilization transmission, improves making for the utility model
With service life and performance.
As shown in Figure 1, the utility model is realized by the way that sealant is arranged between piezoelectricity protective cover 4 and encapsulating housing 9
Piezoelectric element 16 is isolated with external environment, plays the role of protecting piezoelectric element, further increases the utility model
Stability when in use.The utility model is realized by the way that protective cover pin 13, pole piece pin 7 and wire connection cavity 10 is arranged
Being relatively isolated between the tie point and piezoelectricity chamber 3 of conducting wire, plays and the tie point of conducting wire is further avoided to be damaged
Technique effect.The utility model is by the filling with sealant in wire connection cavity 10, further to shape at the tie point of conducting wire 11
At protection, the stability of the utility model at work is further increased.The utility model is by being arranged sealing
Slot 15 and the filling with sealant in sealing groove 15 can not only improve the sealing effect of the utility model, but also can carry
The intensity that high-voltage electricity protective cover 4 connects on the utility model can further improve the utility model at work
Stability.
Claims (6)
1. welding ultrasonic transducer at a kind of piezoelectric element, characterized in that including encapsulating housing, piezoelectric element, piezoelectricity protection
Cover, pole piece and two conducting wires are equipped with piezoelectricity chamber in the encapsulating housing, and the piezoelectricity protective cover is used for the lower end seal of piezoelectricity chamber
Close, the piezoelectric element and the pole piece are respectively provided in piezoelectricity chamber, the lower surface of the pole piece and the piezoelectric element it is upper
Surface is bonded, and acoustical coupling is equipped at the position between more than the piezoelectricity protective cover and below the lower surface of piezoelectric element
Material that can be conductive, a conducting wire and piezoelectricity protection is respectively adopted in layer, the piezoelectricity protective cover and the pole piece
Cover electrical connection, another conducting wire and pole piece electrical connection.
2. welding ultrasonic transducer at a kind of piezoelectric element according to claim 1, characterized in that the piezoelectricity protection
The sealant for the piezoelectricity chamber to be isolated with external environment is equipped between cover and the encapsulating housing.
3. welding ultrasonic transducer at a kind of piezoelectric element according to claim 1, characterized in that the encapsulating housing
In be equipped with wire connection cavity, the pole piece includes pole piece pin, is equipped between wire connection cavity and the piezoelectricity chamber and is passed through for pole piece pin
One end of pole piece pilot hole, pole piece pin is located in wire connection cavity, and the piezoelectricity protective cover includes protective cover pin, the encapsulating housing
It is equipped with the protective cover pilot hole passed through for protective cover pin, one end of protective cover pin is located in wire connection cavity, a conducting wire
It is located at the part in wire connection cavity with pole piece pin to be electrically connected, another conducting wire is located at the portion in wire connection cavity with protective cover pin
Divide electrical connection.
4. welding ultrasonic transducer at a kind of piezoelectric element according to claim 3, characterized in that in the wire connection cavity
Filled with fluid sealant.
5. welding ultrasonic transducer at a kind of piezoelectric element according to claim 4, characterized in that the encapsulating housing
It is being equipped with sealing groove at the position of piezoelectricity protective cover surrounding, is being filled with fluid sealant in the sealing groove, is located in sealing groove
Fluid sealant the piezoelectricity protective cover can be clinged on the encapsulating housing.
6. welding ultrasonic transducer at a kind of piezoelectric element according to claim 5, characterized in that the protective cover draws
The lower end in hole is connected to the sealing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721903444.1U CN207723036U (en) | 2017-12-29 | 2017-12-29 | Welding ultrasonic transducer at a kind of piezoelectric element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721903444.1U CN207723036U (en) | 2017-12-29 | 2017-12-29 | Welding ultrasonic transducer at a kind of piezoelectric element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207723036U true CN207723036U (en) | 2018-08-14 |
Family
ID=63083992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721903444.1U Active CN207723036U (en) | 2017-12-29 | 2017-12-29 | Welding ultrasonic transducer at a kind of piezoelectric element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207723036U (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 |
-
2017
- 2017-12-29 CN CN201721903444.1U patent/CN207723036U/en active Active
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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202455520U (en) | Waterproof structure with microphone device | |
| CN208847393U (en) | A kind of encapsulating structure of pressure sensor | |
| CN207723036U (en) | Welding ultrasonic transducer at a kind of piezoelectric element | |
| CN203191140U (en) | Dielectric isolation packaging structure for pressure sensor | |
| TWI609623B (en) | Electromagnetic shielding material and method for packaging optical module | |
| CN106558649B (en) | Ultrasonic sensor and its manufacturing method | |
| CN205352589U (en) | Keep apart waterproof type pressure sensor | |
| CN115183931A (en) | MEMS gas pressure sensor packaging structure | |
| CN207788042U (en) | A kind of exothermic weld cup and exothermic weld capsule | |
| CN203231865U (en) | Dielectric isolation pressure sensor based on backside metallization process | |
| CN203274997U (en) | Waterproof sealing device for force sensor of underwater measurement | |
| CN106876343A (en) | A kind of power model of integrated water-filled radiator | |
| CN204376361U (en) | A kind of wire connection device of pressure-resistant seal | |
| CN203858052U (en) | Pressure sensitive component adopting ceramic metal tube shell axial sintering | |
| CN202994226U (en) | Ultrasonic water meter transducer | |
| CN206471320U (en) | The power model of integrated water-filled radiator | |
| CN103368125B (en) | Sealing structure of conducting line lead in closed structure | |
| CN2539162Y (en) | Silicon piezoresistive type pressure sensor of non-ceramic piece structure | |
| JP2017116456A (en) | Pressure sensor | |
| CN204575154U (en) | A kind of lead type amplitude high sensitivity ultrasonic sensor | |
| CN214416909U (en) | Energy converter | |
| CN205808484U (en) | Ultrasonic flow sensor | |
| CN218822546U (en) | Precession vortex gas flow piezoelectric sensor | |
| CN220036654U (en) | Packaging device for acoustic wave transmitting transducer while drilling | |
| CN105934007A (en) | Method for packaging armoured heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |