CN202599602U - Anti-shearing pressure sensor - Google Patents
Anti-shearing pressure sensor Download PDFInfo
- Publication number
- CN202599602U CN202599602U CN 201220163021 CN201220163021U CN202599602U CN 202599602 U CN202599602 U CN 202599602U CN 201220163021 CN201220163021 CN 201220163021 CN 201220163021 U CN201220163021 U CN 201220163021U CN 202599602 U CN202599602 U CN 202599602U
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- CN
- China
- Prior art keywords
- sensor
- pressure
- flexible member
- pressure head
- shearing resistance
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- 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.)
- Expired - Fee Related
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses an anti-shearing pressure sensor. The sensor comprises an elastic element 1, a senor pressure head 2, a pressure bearing element 3, a housing 4 and a cover plate 5, wherein a through hole is opened in the center of the elastic element 1, the sensor pressure head 2 is placed in the central hole of the elastic element 1, a gap exists between the sensor pressure head 2 and inner wall of the central hole of the elastic element 1, a stage surface of the sensor pressure head 2 contacts with the top end of the elastic element 1, the front end of the pressure bearing element 3 is placed on the sensor pressure head 2, the upper portion of the housing is connected with the pressure bearing element 3, and screw thread inside the bottom of the housing is in threaded connection with the bottom of the elastic element 1. According to the structure design of the sensor, the shearing force is transmitted in the housing, so that the sensor pressure head is not influenced, thereby improving the accuracy of the measurement.
Description
Technical field
The utility model relates to a kind of shearing resistance pressure transducer, especially a kind of excessive shearing resistance pressure transducer that influences normal stress of measured shearing of avoiding.
Background technology
So-called shearing is meant two close (but non-vanishing) of acting on the same object, equal and opposite in direction, parallel force in the opposite direction.When for example scissors removed to cut an object, the acting force of the suffered two scissors mouths of object was exactly a shearing.
Pressure transducer is a kind of sensor the most commonly used in the industrial practice; It is widely used in various industrial automatic control environment; Relate to numerous industries such as water conservancy and hydropower, railway traffic, intelligent building, production automatic control, Aero-Space, military project, petrochemical industry, oil well, electric power, boats and ships, lathe, pipeline
Mechanics sensor of a great variety is piezoresistive pressure sensor but use the most widely.Piezoresistive transducer generally is through the quick original paper of gaging pressure (pressure-sensitive metal; Pottery; Silicon crystal etc.) after certain deformation took place in the effect of being stressed, the respective change that its resistance produces converted pressure signal to electric signal, so piezoresistive transducer generally will form a complete closed circuit; Again according to Ohm law; Measure the change in resistance of the quick resistive element of pressure in real time, confirm the induction pressure size, piezoresistive pressure sensor has extremely low price and higher precision and better linearity characteristic.
The sensor market in the whole world demonstrates the trend of quick growth among the innovation that constantly changes, competition also will be fierce day by day.This just needs sensor constantly to optimize, and precision, accuracy are higher.The pressure transducer general measure be axle pressure, but in actual measurement is used, shearing existence more or less sometimes enough will influence the stressed of flexible member greatly the time, causes the result of measurement accurate inadequately.The utility model is exactly on the basis of existing piezoresistive pressure sensor, to optimize to improve, and avoids the influence of shearing in measuring process, thereby improves the accuracy of measuring.
The utility model content
1, the utility model purpose.
The purpose of the utility model provides a kind of shearing resistance pressure transducer, the influence that can avoid shearing in measuring process, to bring, thus improve the accuracy of measuring.
2, the technical scheme of the utility model.
The utility model provides a kind of shearing resistance pressure transducer; Mainly comprise flexible member 1, sensor pressure head 2, pressure restraining element 3, shell 4, cover plate 5; Described flexible member 1 center has through hole, and described sensor pressure head 2 is placed in the center pit of flexible members 1, leaves the space with the inwall of flexible member 1 center pit; Step surface wherein contacts with the top of flexible member; The front end of described pressure restraining element 3 is placed on the sensor pressure head 2, and described shell 4 tops link to each other with pressure restraining element 3, and the screw thread of bottom inside is connected with flexible member 1 bottom thread.
The about 1mm in space between the inwall of described sensor pressure head 2 and flexible member 1 center pit.Described shell 4 bottom inside and flexible member 1 bottom outside are through being about the thread connection of 30mm, and 4 planes of pasting strainometer are left in the outside in the middle of the flexible member 1.Described flexible member 1 bottom has 8 bolts hole.
Leave the space of 0.5mm between the described pressure restraining element 3 and sensor pressure head 2 outsides.The outside of described shell 4 upper end inwalls and pressure restraining element 3 is clearance fit.
3, the effect of the generation of the utility model.
The utility model conducts shearing through structural design in shell, do not influence the sensor pressure head, thereby improves the accuracy of measuring.
Description of drawings
Fig. 1 is the utility model embodiment shearing resistance pressure transducer synoptic diagram.
Wherein: 1 is flexible member, and 2 is the sensor pressure head, and 3 is pressure restraining element, and 4 is shell, and 5 is cover plate.
Embodiment
Embodiment
Below in conjunction with the accompanying drawing illustrated embodiment the utility model is further described.
Fig. 1 is the utility model embodiment shearing resistance pressure transducer synoptic diagram.The shearing resistance pressure transducer comprises flexible member 1, sensor pressure head 2, pressure restraining element 3, shell 4, cover plate 5.
The foregoing description limits the utility model never in any form, and every employing is equal to the technical scheme that replacement or the mode of equivalent transformation obtain and all drops in the protection domain of the utility model.
Claims (6)
1. shearing resistance pressure transducer; Mainly comprise flexible member (1), sensor pressure head (2), pressure restraining element (3), shell (4), cover plate (5); It is characterized in that: described flexible member (1) center has through hole, and described sensor pressure head (2) is placed in the center pit of flexible member, leaves the space with the inwall of flexible member (1) center pit; Step surface wherein contacts with the top of flexible member (1); The front end of described pressure restraining element (3) is placed on the sensor pressure head, and described shell (4) top links to each other with pressure restraining element (3), and the screw thread of bottom inside is connected with flexible member (1) bottom thread.
2. shearing resistance pressure transducer according to claim 1 is characterized in that: the about 1mm in space between the inwall of described sensor pressure head (2) and flexible member center pit.
3. shearing resistance pressure transducer according to claim 1 is characterized in that: described shell (4) bottom inside and flexible member (1) bottom outside are through being about the thread connection of 30mm.
4. shearing resistance pressure transducer according to claim 1 is characterized in that: described flexible member (1) bottom has 8 bolts hole.
5. shearing resistance pressure transducer according to claim 1 is characterized in that: the space of leaving 0.5mm between the described pressure restraining element (3) and sensor pressure head (2) outside.
6. shearing resistance pressure transducer according to claim 1 is characterized in that: the outside of described shell (4) upper end inwall and pressure restraining element (3) is a clearance fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220163021 CN202599602U (en) | 2012-04-18 | 2012-04-18 | Anti-shearing pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220163021 CN202599602U (en) | 2012-04-18 | 2012-04-18 | Anti-shearing pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202599602U true CN202599602U (en) | 2012-12-12 |
Family
ID=47317131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220163021 Expired - Fee Related CN202599602U (en) | 2012-04-18 | 2012-04-18 | Anti-shearing pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202599602U (en) |
-
2012
- 2012-04-18 CN CN 201220163021 patent/CN202599602U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20180418 |