CN2064053U - Grid type pressure transducer - Google Patents
Grid type pressure transducer Download PDFInfo
- Publication number
- CN2064053U CN2064053U CN 89219335 CN89219335U CN2064053U CN 2064053 U CN2064053 U CN 2064053U CN 89219335 CN89219335 CN 89219335 CN 89219335 U CN89219335 U CN 89219335U CN 2064053 U CN2064053 U CN 2064053U
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- China
- Prior art keywords
- moving contact
- conductor
- waveform
- pressure
- utility
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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.)
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a grid type pressure transducer which is mainly used for fluid pressure measurement, for example, pressure oil measurement for a motor car. The utility model is characterized in that a cavity element with elastic waveform is adopted as a waveform chamber; the waveform chamber extends with the application of pressure so as to drive a moving contact to move on a fixed contact group; the moving contact is arranged on the waveform chamber; the fixed contact group is formed by superposition and arrangement of conductor grid pieces; the size of fluid pressure is used to change the resistance value of each of resistors which are connected with a secondary instrument in series; consequently, value of current which flows through the secondary instrument is changed, and the fluid pressure is measured. Due to large and reliable contact areas between the moving contact and the fixed contacts, the utility model has the advantages of vibration resistance, no electrical sparks generation, and extended product service life.
Description
The utility model is a kind of grid formula pressure sensor, is mainly used in the measurement of hydrodynamic pressure, as the measurement of automobile oil pressure.
The employed oil pressure sensor of measured automobiles oil pressure is to adopt Mo unification bimetallic strip structure at present.Its principle of work is, Mo is combined in the relative displacement that produces 0.4 millimeter under the rated pressure, contacting and disconnection that the control thermosensitive bimetal drives reach adjusting with the variation that switches on and off the cycle and flow through the pressure that the size of secondary instrument average current is measured oil circuit.This device is because the initial application displacement is little, add the bump vibration of engine, and a small amount of displacement of transmitting parts all can cause the error of measuring system, bimetallic strip is being easy to fatigue in the bending repeatedly in addition, the interrupted conducting of electrical current, therefore produce spark and cause the contact to be burnt to death, whole device is malfunctioning.
Task of the present utility model is the shortcoming that overcomes above-mentioned pressure sensor, provides a kind of measurement accurately, reliably, the grid formula pressure sensor of long service life.
For finishing above-mentioned task, the technical solution of the utility model is, adopt a kind of elasticity waveform cavity element as the waveform chamber, stretch after when producing pressure, making elasticity waveform chamber pressurized, thereby drive moving contact motion fixed thereon, moving contact and the static contact group one side engagement that rearranges by insulating trip conductor grid spare stack at interval, during motion and each conductor of conductor grid spare mesh one by one, the total equivalent resistance of the resistor network that conductor grid spare is electrically connected changes according to certain rules, to be changed the resistance with the secondary instrument resistance in series by the difference of measuring pressure, promptly change the size that flows through the secondary instrument electric current, measure the size of hydrodynamic pressure.
Moving contact can adopt a conductor steamboat, as pinion wheel, little ratchet, little circle roller, perhaps adopts the flexible member that curves certain angle.
Fig. 1 is the structural representation of the pressure-sensitive sensor of automotive oil; Fig. 2 is a fundamental diagram of the present utility model.
Describe the structure of the present utility model and the course of work in detail below in conjunction with accompanying drawing.
As shown in Figure 1, oil pocket 8 is an elasticity corrugated tube, the one end is connected with chassis 7 rigidity, chassis 7 has central through hole to communicate with outer oil circuit, have top cover 9 on the other end of oil-in chamber 8, on top cover 9, be fixed with a conductor steamboat 10, as pinion wheel, little ratchet, little circle roller, be little ratchet among the figure, clavula wheel 10 usefulness conductor materials are manufactured, as copper material, tooth on the clavula wheel 10 is moving contact a, moving contact a ground connection, as shown in Figure 2, the flexible member that moving contact a also available curves certain angle replaces steamboat 10; Conductor grid spare 4 rearranges static contact group b for some guide cards superpose at interval with insulating trip 3, conductor grid spare 4 adopts conductor material to manufacture, as copper material, can be that sheet also can be ring plate shape etc., each guide card of conductor grid spare 4 is electrically connected with the resistance in series contact of lead and resistor network 6 respectively, resistor network 6 is connected in the secondary instrument electric circuit, one end ground connection, as shown in Figure 2, the resistance of resistor network 6 also can adopt and be connected in parallel, and can change the secondary instrument series resistance value as long as reach in the connection one by one of moving contact a and static contact group b; Clavula wheel 10 meshes with the side of grid spare 4, and corrugated tube stretches and produces displacement behind oil-in chamber 8 pressurizeds, drives clavula wheel 10 and moves on grid spare 4 sides, meshes one by one with grid spare 4 guide cards, and the while connects one by one with the resistance contact of resistor network 6; Resistor network 6 is fixed on the circuit board 5, and circuit board 5 is fixing by the support 11 that is fixed on the chassis 7, is fixed with an elasticity flow deflector 2 on the circuit board 5, and secondary instrument is electrically connected by the resistance contact of elasticity flow deflector 2 with resistor network 6 by terminals 1.
Principle of work: corrugated tube stretches and produces displacement behind waveform chamber 8 pressurizeds, driving clavula wheel 10 moves on conductor grid spare 4 sides, connect one by one with the guide card in the conductor grid spare 4, that is connect one by one with the resistance in the resistor network 6, thereby change resistance with the secondary instrument resistance in series, the current value that flows through secondary instrument is also changed thereupon, thereby measure the pressure of fluid.
The utility model is compared with original technology and is had the following advantages:
(1), can guarantee moving contact a and static contact b positive engagement, the raising of vibration and shock resistant performance; (2), the contact contact area increases, electric current does not have power machine meeting, so can not produce spark, thereby has improved life of product; (3), network resistor can select good temperature resistance to float the precision resister material of performance, improves the adaptability to adverse circumstances.
Claims (2)
1, a kind of grid formula pressure sensor of measuring fluid pressure, it is characterized in that adopting elasticity waveform cavity element as waveform chamber 8, have moving contact α on its top cover 9, conductor grid spare 4 usefulness insulating trips 3 stack at interval rearrange static contact group B, moving contact α and the engagement of conductor grid spare 4 sides, and can move thereon; Each conductor of conductor grid spare 4 respectively with resistor network 6 in corresponding being electrically connected of resistance, resistor network 6 is connected in the electric circuit of secondary instrument C.
2, grid formula pressure sensor as claimed in claim 1 is characterized in that said moving contact a is a conductor steamboat 10, as pinion wheel, little ratchet, little circle roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89219335 CN2064053U (en) | 1989-11-05 | 1989-11-05 | Grid type pressure transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89219335 CN2064053U (en) | 1989-11-05 | 1989-11-05 | Grid type pressure transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2064053U true CN2064053U (en) | 1990-10-17 |
Family
ID=4874222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89219335 Granted CN2064053U (en) | 1989-11-05 | 1989-11-05 | Grid type pressure transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2064053U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100541157C (en) * | 2004-03-30 | 2009-09-16 | 株式会社电装 | Pressure transducer |
| CN109353252A (en) * | 2018-12-06 | 2019-02-19 | 吉林大学 | A kind of Intelligent automobile seat device and methods for using them known with body pressure sensitivity |
-
1989
- 1989-11-05 CN CN 89219335 patent/CN2064053U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100541157C (en) * | 2004-03-30 | 2009-09-16 | 株式会社电装 | Pressure transducer |
| CN109353252A (en) * | 2018-12-06 | 2019-02-19 | 吉林大学 | A kind of Intelligent automobile seat device and methods for using them known with body pressure sensitivity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee |