US20110179878A1 - Oil pressure sensor - Google Patents
Oil pressure sensor Download PDFInfo
- Publication number
- US20110179878A1 US20110179878A1 US12/692,624 US69262410A US2011179878A1 US 20110179878 A1 US20110179878 A1 US 20110179878A1 US 69262410 A US69262410 A US 69262410A US 2011179878 A1 US2011179878 A1 US 2011179878A1
- Authority
- US
- United States
- Prior art keywords
- induction unit
- oil pressure
- separator
- oil
- electronic circuit
- 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.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/14—Housings
- G01L19/148—Details about the circuit board integration, e.g. integrated with the diaphragm surface or encapsulation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0627—Protection against aggressive medium in general
- G01L19/0645—Protection against aggressive medium in general using isolation membranes, specially adapted for protection
Definitions
- the present invention relates to an oil pressure sensor and more particularly an oil pressure sensor which is simply constructed, of high precision, invulnerable to be securely applicable to measure oil pressure in all occasions.
- the ceramic type is made of ceramic material by precision technology.
- the ceramic material has several advantages like stable in property, electrically insulative, better rigidity and resistive to abrasion, the ceramic type oil pressure sensor is thus of better accuracy, and durable.
- its fabrication process is complicated with the result of high production cost and expensive market price.
- the mechanical type is manufactured according to the traditional mechanical procedure. It is advantageous with simple in construction, easy for production and the market price is lower than that of an equivalent ceramic one. As a result, it has been occupying a wider market than the ceramic type. However, the latter is rather inferior to the former in measurement accuracy, and vulnerable, yielding to abrasion after long time use that further leads to aggravating the measurement accuracy, and even breaking down the sensor. Further to this, the mechanical type is bulky, awkward and not so convenient to use.
- a press board is lay on the induction unit so as to enhance hermetical effect of the induction unit thereby preventing oil leakage and improving the accuracy of measurement.
- On the press board there is an electronic circuit whose circumference is electrically in connection with the induction unit so as to actuate the induction unit and send back the measured data.
- Finally the electronic circuit is covered with a lid so as to seal the accommodation cavity in the main body. An opening is formed through the lid to bring lead wires of the electronic circuit to go out therefrom for transmitting the measured data to another instrument.
- FIG. 1 is a three dimensional exploded view of the oil pressure sensor according to the present invention.
- the main body 1 has an accommodation cavity 11 in it to accommodate other component parts of the oil pressure sensor.
- An oil inlet pipe 12 is extended downwards from the accommodation cavity 11 to introduce the oil whose pressure is to be measured into the accommodation cavity 11 via oil inlet pipe 12 .
- the separator 2 is provided in the accommodation cavity 11 to cover the oil inlet pipe 12 in order not to allow the oil pressure directly impact other component parts of the sensor.
- the separator 2 is essentially made of a rubber element of fluoroelastomer.
- the induction unit 3 is disposed on the separator 2 with an induction element 33 attached to it and downwardly facing to the separate 2 so as to detect the oil pressure.
Abstract
A novel oil pressure sensor includes component parts simply stacked up from bottom to top, namely a main body, a separator, an induction unit, a press board, an electronic circuit and a lid. The main body has an accommodation cavity to accommodate other component parts. An oil inlet pipe which extended downward from the accommodation cavity is covered by the separator to alleviate the impact of the flowing oil to the component parts. A conduction medium filled between the induction unit and the separator contributes to assuring conductance of the oil pressure thereby upgrading measurement sensitivity. The press board contributes to prevention of oil leakage. The electronic circuit sends the measured data to another instrument by simple and reliable plug and receptacle combination.
Description
- 1. Field of the Invention
- The present invention relates to an oil pressure sensor and more particularly an oil pressure sensor which is simply constructed, of high precision, invulnerable to be securely applicable to measure oil pressure in all occasions.
- 2. Description of the Prior Art
- There are two types of conventional oil pressure sensors, one is the ceramic type and the other the mechanical type.
- (1) The ceramic type is made of ceramic material by precision technology. As the ceramic material has several advantages like stable in property, electrically insulative, better rigidity and resistive to abrasion, the ceramic type oil pressure sensor is thus of better accuracy, and durable. However, its fabrication process is complicated with the result of high production cost and expensive market price.
- (2) The mechanical type is manufactured according to the traditional mechanical procedure. It is advantageous with simple in construction, easy for production and the market price is lower than that of an equivalent ceramic one. As a result, it has been occupying a wider market than the ceramic type. However, the latter is rather inferior to the former in measurement accuracy, and vulnerable, yielding to abrasion after long time use that further leads to aggravating the measurement accuracy, and even breaking down the sensor. Further to this, the mechanical type is bulky, awkward and not so convenient to use.
- For these shortcomings inherent to the prior art, an improvement is seriously required.
- In a bid to rectify the present situation described above, the inventor of the present invention has plunged into this matter with great effort for years for studying how to solve the existing problems, and finally come up with a novel type of an oil pressure sensor which will be disclosed below.
- It is an object of the present invention to provide an oil pressure sensor which is simply constructed, easy for production and assembly with low cost.
- It is another object of the present invention to provide an oil pressure sensor which is compact in size, easy to install and use in every occasion with high precision.
- It is one more object of the present invention to provide an oil pressure sensor which can be securely and durably used for a long time without leaking oil or malmeasurement or even incurring an accident so as to release the user's worry.
- To achieve these and other objects mentioned above, the oil pressure sensor provided by the present invention comprises a main body baying an accommodation cavity in it. An oil inlet pipe is extended downwards from the accommodation cavity to introduce the oil whose pressure is to be measured into the accommodation cavity through the oil inlet pipe. A separator is provided in the accommodation cavity to cover the oil inlet pipe in order not to allow the oil pressure directly impact other construction parts of the sensor. An induction unit is disposed on the separator with an induction element attached to it downwardly facing the separator so as to detect the oil pressure. There is a conduction medium filled between the induction unit and the separator for assuring the conduction of oil pressure thereby upgrading the measurement sensitivity of the oil pressure by the induction unit. A press board is lay on the induction unit so as to enhance hermetical effect of the induction unit thereby preventing oil leakage and improving the accuracy of measurement. On the press board there is an electronic circuit whose circumference is electrically in connection with the induction unit so as to actuate the induction unit and send back the measured data. Finally the electronic circuit is covered with a lid so as to seal the accommodation cavity in the main body. An opening is formed through the lid to bring lead wires of the electronic circuit to go out therefrom for transmitting the measured data to another instrument.
-
FIG. 1 is a three dimensional exploded view of the oil pressure sensor according to the present invention. -
FIG. 2 is perspective view of the oil pressure sensor according to the present invention. -
FIG. 3 is a fragmentary exploded view for illustrating the oil pressure sensor of the present invention. -
FIG. 4 is an exploded front view of the oil pressure sensor according to the present invention. -
FIG. 5 is a fragmentary exploded front view of the oil pressure sensor according to the present invention. - Referring to
FIG. 1 throughFIG. 5 , the oil pressure sensor provided by the present invention comprises amain body 1, aseparator 2, aninduction unit 3, apress board 3, anelectronic circuit 5 and alid 6. - The
main body 1 has anaccommodation cavity 11 in it to accommodate other component parts of the oil pressure sensor. Anoil inlet pipe 12 is extended downwards from theaccommodation cavity 11 to introduce the oil whose pressure is to be measured into theaccommodation cavity 11 viaoil inlet pipe 12. Theseparator 2 is provided in theaccommodation cavity 11 to cover theoil inlet pipe 12 in order not to allow the oil pressure directly impact other component parts of the sensor. Theseparator 2 is essentially made of a rubber element of fluoroelastomer. Theinduction unit 3 is disposed on theseparator 2 with aninduction element 33 attached to it and downwardly facing to the separate 2 so as to detect the oil pressure. There is aconduction medium 32 filled between theinduction unit 3 and theseparator 2 for assuring the conduction of the oil pressure thereby upgrading the measurement sensitivity of the oil pressure by theinduction unit 3. Thepress board 4 is lay on theinduction unit 3 so as to enhance hermical effect of theinduction unit 3 thereby preventing oil leakage and improving the accuracy of measurement. Theelectronic circuit 5 is formed on thepress board 4. There areelectric conducting segments induction unit 3 and theelectronic circuit 5 so as to electrically connect the two component parts viaelectric conduction segments induction unit 3 and sending back the measured data. Theelectronic circuit 5 is covered with thelid 6 so as to seal theaccommodation cavity 11 in themain body 1 thus making up an independent structure. Anopening 61 is formed through thelid 6 to bringlead wires 52 of theelectronic circuit 5 to stretch out therefrom to another instrument for transmission of measured data. Moreover, thelead wires 52 are provided withterminals 53 which are connected with another instrument by plug and receptacle combination for the convenience of transmitting the measured data to another instrument with a simple connection structure. - With such a structure, when the oil pressure sensor is to be set for measurement, the
main body 1 of the sensor is screwed into the measuring object by means of its threadedface 13. The oil for measurement is introduced into theaccommodation cavity 11 viaoil inlet pipe 12 and its flow is retarded and alleviated by theseparator 2 and theconduction medium 31 such that theinduction unit 3 can carry out measurement of the oil pressure with itsinduction element 33. The hermetical effect of themain body 1 is enhanced by thepress board 4 so that the operation security is assured. The measured data are sent to other instruments viaelectronic circuit 5 and thelead wires 52. - The oil pressure sensor fabricated according to the present invention has several advantages in comparison with both ceramic and mechanical type ones, namely:
- 1. The instrument precision is greatly improved.
- 2. This instrument is suitable for all kinds of oil pressure measurement.
- 3. The mechanical structure is compact and simple so that the production cost is inexpensive.
- 4. Free from an accidental oil leakage, 100% security can be assured.
- Many changes and modifications in the above described embodiment of the invention can, of course, be carried out without departing from the scope thereof. Accordingly, to promote the progress in science and the useful arts, the invention is disclosed and is intended to be limited only by the scope of the appended claims.
Claims (6)
1. An oil pressure sensor comprising:
a main body having an accommodation cavity therein, wherein an oil inlet pipe is extended downwards from said accommodation cavity;
a separator provided in said accommodation cavity to cover said oil inlet pipe in order not to allow the oil pressure directly impact other component parts;
an induction unit disposed on said separator with an induction element attached thereto and downwardly facing to said separator so as to detect the oil pressure; wherein a conduction medium is filled between said induction unit and said separator for assuring conduction of the oil pressure thereby upgrading a measurement sensibility of the oil pressure by said induction unit.
a press board lay on said induction unit so as to enhance hermical effect of said induction unit thereby preventing oil leakage and improving accuracy of measurement;
an electronic circuit formed on said press board with its circumference electrically in connection with said induction unit thereby actuating said induction unit and sending back measured data; and
a lid covering said electronic circuit so as to enclose the lid along with said main body in a sealed state; wherein an opening is formed through said lid to bring lead wires of said electronic circuit to stretch out therefrom to another instrument for transmitting measured data.
2. The sensor of claim 1 , wherein said separator is made of a rubber element.
3. The sensor of claim 1 , wherein said rubber element is a fluoroelastomer.
3. The sensor of claim 1 , wherein said conduction medium is silicon oil.
4. The sensor of claim 1 , wherein electric conduction segments are provided between said induction unit and said electronic circuit to make the two component parts electrically in connection with each other.
5. The sensor of claim 1 , wherein said lead wires are provided with terminals which are connected with another instrument by plug and receptacle combination for transmitting the measured data to another instrument.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/692,624 US7997141B1 (en) | 2010-01-24 | 2010-01-24 | Oil pressure sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/692,624 US7997141B1 (en) | 2010-01-24 | 2010-01-24 | Oil pressure sensor |
Publications (2)
Publication Number | Publication Date |
---|---|
US20110179878A1 true US20110179878A1 (en) | 2011-07-28 |
US7997141B1 US7997141B1 (en) | 2011-08-16 |
Family
ID=44307930
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/692,624 Expired - Fee Related US7997141B1 (en) | 2010-01-24 | 2010-01-24 | Oil pressure sensor |
Country Status (1)
Country | Link |
---|---|
US (1) | US7997141B1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8347725B2 (en) * | 2011-02-08 | 2013-01-08 | Cub Elecparts Inc. | Oil pressure sensor |
DE102011077868A1 (en) * | 2011-06-21 | 2012-12-27 | Robert Bosch Gmbh | Pressure sensor arrangement for detecting a pressure of a fluid medium in a measuring space |
JP6838461B2 (en) * | 2017-03-30 | 2021-03-03 | 日本電産トーソク株式会社 | Hydraulic sensor mounting structure |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4551069A (en) * | 1984-03-14 | 1985-11-05 | Copeland Corporation | Integral oil pressure sensor |
US20020029639A1 (en) * | 2000-01-19 | 2002-03-14 | Measurement Specialities, Inc. | Isolation technique for pressure sensing structure |
US6425293B1 (en) * | 1999-03-13 | 2002-07-30 | Textron Systems Corporation | Sensor plug |
US20030150275A1 (en) * | 2000-01-19 | 2003-08-14 | Wagner David E. | Isolation technique for pressure sensing structure |
-
2010
- 2010-01-24 US US12/692,624 patent/US7997141B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4551069A (en) * | 1984-03-14 | 1985-11-05 | Copeland Corporation | Integral oil pressure sensor |
US6425293B1 (en) * | 1999-03-13 | 2002-07-30 | Textron Systems Corporation | Sensor plug |
US20020029639A1 (en) * | 2000-01-19 | 2002-03-14 | Measurement Specialities, Inc. | Isolation technique for pressure sensing structure |
US20030150275A1 (en) * | 2000-01-19 | 2003-08-14 | Wagner David E. | Isolation technique for pressure sensing structure |
US6938490B2 (en) * | 2000-01-19 | 2005-09-06 | Measurement Specialties, Inc. | Isolation technique for pressure sensing structure |
Also Published As
Publication number | Publication date |
---|---|
US7997141B1 (en) | 2011-08-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3139931U (en) | Container equipped with liquid metering detection device | |
CN205785644U (en) | MEMS minute-pressure pressure transducer | |
US7997141B1 (en) | Oil pressure sensor | |
CN203178006U (en) | Pressure transducer packaging structure | |
CN206350682U (en) | Pot cover component and cooking apparatus | |
CN109696273B (en) | Automobile brake boosting vacuum pressure sensor device | |
CN206590896U (en) | A kind of encapsulating structure of pressure sensor | |
CN108120865A (en) | A kind of high sensitivity safety electric flow sensor | |
CN209417074U (en) | A kind of piezoelectricity velocity sensor | |
US20090120180A1 (en) | Solution metering apparatus having temperature sensing function | |
CN2449208Y (en) | Pressure-resistance type liquid level transmitters | |
CN102012248B (en) | Capacitance type water level sensor | |
CN203705111U (en) | Pressure transmitter | |
CN108007632A (en) | A kind of magnetoelectric induction pressure sensor | |
CN104515641B (en) | Pressure sensor and pressure cooking appliance for pressure cooking appliance | |
CN205861276U (en) | A kind of monoblock type differential pressure transmitter | |
CN207354411U (en) | Protective case component | |
CN105606237A (en) | Temperature transmitter housing capable of heat dissipating and sealing | |
CN206515383U (en) | A kind of highly sensitive universal meter with insulation antiskid function | |
CN208953187U (en) | Common rail pressure sensor | |
CN201522255U (en) | Digital display caliper | |
CN2859486Y (en) | Temperature sensor for electric water kettle temperature measuring | |
CN212378798U (en) | Waterproof anti-interference humiture integration measuring probe | |
CN209559375U (en) | It is a kind of miniature with pressure sensor | |
CN200996857Y (en) | Container with liquid metering senser |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FEPP | Fee payment procedure |
Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
|
LAPS | Lapse for failure to pay maintenance fees |
Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20190816 |