CN202630977U - Positioning and pressurizing device for ultrasonic sensor - Google Patents
Positioning and pressurizing device for ultrasonic sensor Download PDFInfo
- Publication number
- CN202630977U CN202630977U CN 201220226949 CN201220226949U CN202630977U CN 202630977 U CN202630977 U CN 202630977U CN 201220226949 CN201220226949 CN 201220226949 CN 201220226949 U CN201220226949 U CN 201220226949U CN 202630977 U CN202630977 U CN 202630977U
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- ultrasonic sensor
- pressue device
- microcontroller
- chute
- cylinder
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Abstract
The utility model discloses a positioning and pressurizing device for an ultrasonic sensor. A vertical column is arranged on a base; a sliding chute is formed in the vertical column; a pressure device capable of moving along the sliding chute is connected to the sliding chute and consists of a pressurizing device and a controller; a pressure rod is arranged on the pressurizing device; a positioning fixture is fixed on the lower end face of the pressurizing device and comprises a positioning shell; a cavity for accommodating the ultrasonic sensor is formed in the positioning shell; an axial positioning rod is arranged in the cavity; an annular cavity matched with a metal shell of the ultrasonic sensor is formed between the circumferential surface of the positioning rod and the inner wall surface of the positioning shell; a positioning slot is formed in the axial end face of the positioning rod; an axial through hole is formed in the positioning rod; and the pressure rod on the pressurizing device extends into the through hole. By the positioning and pressurizing device, a pressed piezoelectric ceramic sheet and a matching layer as well as a center of the metal shell are positioned on the same straight line, so that the sensitivity of the ultrasonic sensor is guaranteed.
Description
Technical field
The utility model relates to the ultrasonic sensor technical field, is specifically related to a kind of location pressue device of ultrasonic sensor.
Background technology
With reference to Fig. 1; It is a kind of 300KHz high frequency ultrasound wave sensor; Form by metal shell 1, piezoelectric ceramic piece 2, matching layer 3 and pcb board 4 etc., piezoelectric ceramic piece 2 and matching layer 3 is bonding, again that matching layer 3 and metal shell 1 is bonding; Pcb board 4 is bonded on the metal shell 1, positive signal 5 lines, negative signal line 6 connection PCB plates 4 and piezoelectric ceramic piece 2.
Because the high-frequency ultrasonic sensor application requires very high to its precision performance; And all being the most original manual work, assembles present stage; This fit not only efficient is low, and in assembling process, through manual work piezoelectric ceramic piece 2 is bonded in 3 last times of matching layer; Because the artificial origin can't guarantee the axle center of piezoelectric ceramic piece 2 and matching layer 3 and be located along the same line, cause piezoelectric ceramic piece 2 and matching layer 3 off-centre.And, between piezoelectric ceramic piece 2 and metal shell 1, constitute resonator cavity 7, piezoelectric ceramic piece 2 vibrations when working sensor, resonator cavity produces resonance.Because it is also eccentric that metal shell 1 is bonded in 3 last times of matching layer, cause the center in piezoelectric ceramic piece 2 off-resonance chambeies 7.Because above factor exists, after the sensor energized, it is unbalanced piezoelectric ceramic piece 2 self vibration to occur, and can't produce resonance with resonator cavity, causes signal attenuation, and transducer sensitivity reduces.
Summary of the invention
To above-mentioned technical matters; The purpose of the utility model provides a kind of location pressue device of ultrasonic sensor; The utility model can make the center of the piezoelectric ceramic piece that press-fited and matching layer and metal shell on same straight line, guarantees to make ultrasonic sensor possess due sensitivity.
The technical scheme that realizes the utility model purpose is following:
The location pressue device of ultrasonic sensor comprises base, and base is provided with column; This column is provided with a chute, and connecting one in the chute can be along the pressure apparatus of chute displacement, and pressure apparatus is made up of pressue device and controller; Pressue device is provided with press rods, fixing positioning tool on the pressue device lower surface, and this positioning tool comprises a positioning housing; Has the cavity that holds ultrasonic sensor on the positioning housing; In this cavity, be provided with axial backstay, between the internal face of the side face of backstay and positioning housing, form a ring cavity that cooperates with the metal shell of ultrasonic sensor, the axial end of said backstay is provided with locating slot; Backstay is provided with axial through hole, and the press rods on the pressue device extend in this through hole.
Adopted such scheme, when needs press-fit sensor, sensor has been placed in the groove on the base; Press the button on the controller, the driven by motor screw rod of controller rotates, thereby makes connecting link to bottom offset; Connecting link drives pressue device to bottom offset, and pressue device is in the process of bottom offset, and the metal shell of ultrasonic sensor enters into the ring cavity on the positioning housing step by step; Be slidingly matched with ring cavity, like this, through the side wall surface effect of ring cavity; Make metal shell obtain the location, can displacement.When positioning housing moves down when putting in place, because backstay is to be arranged in cavity on the positioning housing, so backstay also puts in place thereupon; The piezoelectric ceramic piece of ultrasonic sensor is absorbed in the locating slot on the backstay, the bar location thereby piezoelectric ceramic piece is positioned, like this; The axle center of piezoelectric ceramic piece, matching layer and metal shell is located along the same line; Because the press rods on the pressue device is to be arranged in through hole, press rods presses to piezoelectric ceramic piece when positioning housing puts in place simultaneously; Thereby make and obtain required pressure between piezoelectric ceramic piece, matching layer and the metal shell; The three is bonded as one under the glue effect, avoids the bonding unreliable sensor performance that influences, thus the sensitivity that improves sensor with and impedance operator.The location pressue device of this scheme is fixed, and promptly locating device integral body moves down the bonding parts of sensor is exerted pressure.
Another purpose of the utility model provides a kind of location pressue device of ultrasonic sensor; This location pressue device can make the center of the piezoelectric ceramic piece that press-fited and matching layer and metal shell equally on same straight line, guarantees to make ultrasonic sensor possess due sensitivity.
The location pressue device of ultrasonic sensor comprises base, and base is provided with column; This column is provided with a chute, and connecting one in the chute can be along the pressure apparatus of chute displacement, and pressure apparatus is made up of first cylinder and controller; Fixing positioning tool on the lower surface of first cylinder; This positioning tool comprises a positioning housing, has the cavity that holds ultrasonic sensor on the positioning housing, in this cavity, is provided with axial backstay; Between the internal face of the side face of backstay and positioning housing, form a ring cavity that cooperates with the metal shell of ultrasonic sensor; The axial end of said backstay is provided with locating slot, and backstay is provided with axial through hole, and the piston rod of first cylinder extend in this through hole.
Adopt such scheme, when needs press-fit sensor, sensor has been placed in the groove on the base, pressed the button on the controller; Controller makes connecting link to bottom offset, and connecting link drives first cylinder to bottom offset, and first cylinder is in the process of bottom offset; The metal shell of ultrasonic sensor enters into the ring cavity on the positioning housing step by step, is slidingly matched with ring cavity, like this; Through the side wall surface effect of ring cavity, make metal shell obtain the location, can displacement.When positioning housing moves down when putting in place; Because backstay is to be arranged in cavity on the positioning housing; Therefore backstay also puts in place thereupon, and the piezoelectric ceramic piece of ultrasonic sensor is absorbed in the locating slot on the backstay, the bar location thereby piezoelectric ceramic piece is positioned; Like this, the axle center of piezoelectric ceramic piece, matching layer and metal shell is located along the same line.Make piston rod on first cylinder to bottom offset through controller, piezoelectric ceramic piece is pressed, obtain required pressure between piezoelectric ceramic piece, matching layer and the metal shell, the three is bonded as one under the glue effect thereby make.The location pressue device of this scheme is movable, and promptly the piston rod of first cylinder can freely stretch, thereby imposes required pressure when workpiece press-fited.
Description of drawings
Fig. 1 is the structural representation of this existing ultrasonic sensor;
Fig. 2 is the three-dimensional structure diagram of first kind of location pressue device of the utility model;
Fig. 3 is the sectional structure chart of first kind of location pressue device;
Fig. 4 is the circuit block diagram of first kind of controller;
Fig. 5 is the three-dimensional structure diagram of second kind of location pressue device of the utility model;
Fig. 6 is the sectional structure chart of second kind of location pressue device;
Fig. 7 is the circuit block diagram of second kind of controller;
Fig. 8 is the location pressue device that the adopts the utility model impedance operator synoptic diagram after press-fiting after to sensor;
Fig. 9 is the location pressue device that the adopts the utility model sensitivity synoptic diagram after press-fiting after to sensor;
Embodiment
Embodiment one
With reference to Fig. 2 to Fig. 4, the location pressue device of the ultrasonic sensor of the utility model comprises base 10, and base is provided with column 11.Base 10 is rectangular parallelepiped with column 11, and base 10 upper surfaces are provided with groove 10a, and the center of this groove and the center of the through hole on the backstay are on same straight line.Column 11 is provided with a chute, and connecting one in the chute can be provided with screw rod in the said chute along the pressure apparatus of chute displacement.Pressure apparatus is made up of pressue device 12 and controller 13.Pressue device 12 is a discoid body, and pressue device 12 is provided with connecting link 14, and connecting link 14 is positioned on the upper surface of pressue device, and an end of this connecting link is provided with threaded hole, and connecting link 14 is connected with screw flight in the chute through threaded hole.Controller 13 comprises button 130, microcontroller 131, amplifier 132, motor 133.Button 130 is connected the input end of microcontroller 131, and button 130 is used to send makes the signal that moves or move down on the pressue device 12, and an end of amplifier 132 connects the output terminal of microcontroller 131, microcontroller single-chip microcomputer.The other end of amplifier is connected with motor, and amplifier 132 amplifies the signal of microcontroller 131 outputs, and motor can be worked.Said screw rod is connected in the output terminal of motor, and motor rotates and drives the screw rod rotation, and the screw body through screw rod and connecting link 14 form drives pressue device 12 upper and lower displacements.Pressue device 12 is provided with press rods 15, and press rods 15 is positioned at the lower surface of pressue device 12.Fixing positioning tool on the pressue device lower surface; This positioning tool comprises a positioning housing 16; Has the cavity that holds ultrasonic sensor on the positioning housing; In this cavity, be provided with axial backstay 17, between the internal face of the side face of backstay and positioning housing, form a ring cavity 18 that cooperates with the metal shell of ultrasonic sensor, the axial end of said backstay 17 is provided with locating slot 19; Backstay is provided with axial through hole 20, and the press rods 15 on the pressue device extend in this through hole.
For the mode that makes the pressue device upper and lower displacement; Also can adopt mode to make pressue device along the chute upper and lower displacement through control cylinder; Concrete structure is: said pressue device 12 is provided with connecting link; This connecting link is slidingly fitted in the chute, and connecting link is connected with the piston rod of a cylinder, and this cylinder is connected with microcontroller through solenoid valve.The switch of controller control electromagnetic valve makes the gas in the cylinder switch in the above and below of piston, thereby the connecting link on the piston rod of the cylinder drive pressue device is along the chute upper and lower displacement.
Embodiment two
With reference to Fig. 5 to Fig. 7, the location pressue device of the another kind of ultrasonic sensor of the utility model comprises base 30; Base is provided with column 31; Base and column are rectangular parallelepiped, and base upper surface is provided with groove, and the center of this groove and the center of the through hole on the backstay are on same straight line.Column 31 is provided with a chute, and connecting one in the chute can be along the pressure apparatus of chute displacement.Pressure apparatus is made up of with controller 33 first cylinder 32; Be provided with screw rod in the chute, first cylinder of said pressure apparatus is provided with connecting link 320, and an end of this connecting link 320 is provided with threaded hole; Connecting link is connected with screw flight in the chute through threaded hole; Connecting link 320 forms screw body with screw rod, through bar 320 upper and lower displacements that are dynamically connected of screw rod rotating band, thereby drives 32 upper and lower displacements of first cylinder.Controller comprises first button 34, second button 35, microcontroller 36, amplifier 37, motor 38 and reversing solenoid valve 39; First button 34 is connected to the input end of microcontroller 36 with second button 35, an end of amplifier 37 is connected the output terminal of microcontroller 36, and microcontroller 36 is a single-chip microcomputer.The other end of amplifier 37 is connected with motor 38, and said screw rod is connected in the output terminal of motor 38, and motor 38 drives screw rod and rotates.Reversing solenoid valve 39 is connected in the output terminal of microcontroller 36, switch in the above and below of cylinder cylinder piston through the gas in reversing solenoid valve 39 controls first cylinder 32, and the piston of first cylinder also forms corresponding upper and lower displacement state.Fixing positioning tool on the lower surface of first cylinder 32; This positioning tool comprises a positioning housing 40; Has the cavity that holds ultrasonic sensor on the positioning housing 40; In this cavity, be provided with axial backstay 41, between the internal face of the side face of backstay and positioning housing, form a ring cavity 42 that cooperates with the metal shell of ultrasonic sensor, the axial end of said backstay is provided with locating slot 43; The piston rod 45 that backstay is provided with axial through hole 44, the first cylinders extend in this through hole.
In this enforcement; For the mode that makes the first cylinder upper and lower displacement; Also can adopt through the mode of controlling another second cylinder to make cylinder along the chute upper and lower displacement, concrete structure is: said controller comprises first button, second button, microcontroller, first solenoid valve, second solenoid valve, and first button and second button are connected to the input end of microcontroller; The output terminal that is connected microcontroller respectively of first solenoid valve and second solenoid valve; First cylinder is connected with first solenoid valve, and second cylinder is connected with second solenoid valve, and the cylinder of said pressure apparatus is provided with connecting link; This connecting link is slidingly fitted in the chute, and connecting link is connected with the piston rod of one second cylinder.Controller is controlled the switch of first solenoid valve.
Gas in second cylinder is switched in the above and below of piston, thereby the piston rod of second cylinder drive the connecting link of connection cylinder along the chute upper and lower displacement.
With reference to Fig. 8 and Fig. 9, adopt the location pressue device of the utility model that sensor is press-fited after, the sensitivity of sensor with and impedance operator be improved.
Claims (10)
1. the location pressue device of ultrasonic sensor is characterized in that, comprises base; Base is provided with column, and this column is provided with a chute, and connecting one in the chute can be along the pressure apparatus of chute displacement; Pressure apparatus is made up of pressue device and controller, and pressue device is provided with press rods, fixing positioning tool on the pressue device lower surface; This positioning tool comprises a positioning housing, has the cavity that holds ultrasonic sensor on the positioning housing, in this cavity, is provided with axial backstay; Between the internal face of the side face of backstay and positioning housing, form a ring cavity that cooperates with the metal shell of ultrasonic sensor; The axial end of said backstay is provided with locating slot, and backstay is provided with axial through hole, and the press rods on the pressue device extend in this through hole.
2. the location pressue device of ultrasonic sensor according to claim 1 is characterized in that, said controller comprises button, microcontroller, amplifier, motor; Button is connected the input end of microcontroller; One end of amplifier connects the output terminal of microcontroller, and the other end of amplifier is connected with motor, is provided with screw rod in the said chute; Said pressue device is provided with connecting link; One end of this connecting link is provided with threaded hole, and connecting link is connected with screw flight in the chute through threaded hole, and said screw rod is connected in the output terminal of motor.
3. the location pressue device of ultrasonic sensor according to claim 1; It is characterized in that; Said controller comprises button, microcontroller, and said pressue device is provided with connecting link, and this connecting link is slidingly fitted in the chute; Connecting link is connected with the piston rod of a cylinder, and this cylinder is connected with microcontroller through solenoid valve.
4. the location pressue device of ultrasonic sensor according to claim 2 is characterized in that, said microcontroller is a single-chip microcomputer.
5. the location pressue device of ultrasonic sensor according to claim 1 is characterized in that, said base upper surface is provided with groove, and the center of this groove and the center of the through hole on the backstay are on same straight line.
6. the location pressue device of ultrasonic sensor is characterized in that, comprises base; Base is provided with column, and this column is provided with a chute, and connecting one in the chute can be along the pressure apparatus of chute displacement; Pressure apparatus is made up of first cylinder and controller, fixing positioning tool on the lower surface of first cylinder, and this positioning tool comprises a positioning housing; Has the cavity that holds ultrasonic sensor on the positioning housing; In this cavity, be provided with axial backstay, between the internal face of the side face of backstay and positioning housing, form a ring cavity that cooperates with the metal shell of ultrasonic sensor, the axial end of said backstay is provided with locating slot; Backstay is provided with axial through hole, and the piston rod of first cylinder extend in this through hole.
7. the location pressue device of ultrasonic sensor according to claim 6; It is characterized in that said controller comprises first button, second button, microcontroller, amplifier, motor and reversing solenoid valve, first button and second button are connected to the input end of microcontroller; One end of amplifier connects the output terminal of microcontroller; The other end of amplifier is connected with motor, and reversing solenoid valve is connected in the output terminal of microcontroller, is provided with screw rod in the said chute; First cylinder of said pressure apparatus is provided with connecting link; One end of this connecting link is provided with threaded hole, and connecting link is connected with screw flight in the chute through threaded hole, and said screw rod is connected in the output terminal of motor.
8. the location pressue device of ultrasonic sensor according to claim 6; It is characterized in that said controller comprises first button, second button, microcontroller, first solenoid valve, second solenoid valve, first button and second button are connected to the input end of microcontroller; First solenoid valve and second solenoid valve are connected the output terminal of microcontroller respectively; First cylinder is connected with first solenoid valve, and second cylinder is connected with second solenoid valve, and the cylinder of said pressure apparatus is provided with connecting link; This connecting link is slidingly fitted in the chute, and connecting link is connected with the piston rod of one second cylinder.
9. the location pressue device of ultrasonic sensor according to claim 8 is characterized in that, said microcontroller is a single-chip microcomputer.
10. the location pressue device of ultrasonic sensor according to claim 6 is characterized in that, said base upper surface is provided with groove, and the center of this groove and the center of the through hole on the backstay are on same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220226949 CN202630977U (en) | 2012-05-18 | 2012-05-18 | Positioning and pressurizing device for ultrasonic sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220226949 CN202630977U (en) | 2012-05-18 | 2012-05-18 | Positioning and pressurizing device for ultrasonic sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202630977U true CN202630977U (en) | 2012-12-26 |
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ID=47384170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220226949 Withdrawn - After Issue CN202630977U (en) | 2012-05-18 | 2012-05-18 | Positioning and pressurizing device for ultrasonic sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202630977U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661756A (en) * | 2012-05-18 | 2012-09-12 | 常州波速传感器有限公司 | Positioning and pressurizing device of ultrasonic sensor |
| CN106079830A (en) * | 2016-08-04 | 2016-11-09 | 浙江大学 | Gas ultrasound wave transducer piezoelectric patches and the compacting fixture of matching layer |
-
2012
- 2012-05-18 CN CN 201220226949 patent/CN202630977U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661756A (en) * | 2012-05-18 | 2012-09-12 | 常州波速传感器有限公司 | Positioning and pressurizing device of ultrasonic sensor |
| CN102661756B (en) * | 2012-05-18 | 2014-06-11 | 常州波速传感器有限公司 | Positioning and pressurizing device of ultrasonic sensor |
| CN106079830A (en) * | 2016-08-04 | 2016-11-09 | 浙江大学 | Gas ultrasound wave transducer piezoelectric patches and the compacting fixture of matching layer |
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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 |
Granted publication date: 20121226 Effective date of abandoning: 20140611 |
|
| RGAV | Abandon patent right to avoid regrant |