CN101476919A - Hall fuel level sensor and its sealing technology - Google Patents
Hall fuel level sensor and its sealing technology Download PDFInfo
- Publication number
- CN101476919A CN101476919A CNA2009100255033A CN200910025503A CN101476919A CN 101476919 A CN101476919 A CN 101476919A CN A2009100255033 A CNA2009100255033 A CN A2009100255033A CN 200910025503 A CN200910025503 A CN 200910025503A CN 101476919 A CN101476919 A CN 101476919A
- Authority
- CN
- China
- Prior art keywords
- circuit board
- sealing
- level sensor
- gland bonnet
- shell
- 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.)
- Pending
Links
Images
Landscapes
- Level Indicators Using A Float (AREA)
Abstract
The invention discloses a Hall oil level sensor with a simple sealing structure and good sealing performance and a simple and practical sealing process thereof. The Hall oil level sensor comprises a shell and a sealing cover; the shell is provided with a circuit board mounting cavity; a circuit board with a processing circuit is arranged inside the circuit board mounting cavity; the lower end face of the shell is provided with a sealing groove; the inside of the sealing groove is provided with a sealing ring; the upper side of the sealing cover is provided with a protrudent part which is mutually matched with the sealing groove; the protrudent part is arranged in a fit mode inside the sealing groove so that the sealing cover seals the circuit board mounting cavity; and the outer side of the lower part of the shell is provided with a plurality of clamping buttons for clamping the sealing cover. The sealing process comprises the following steps: firstly, the circuit board with the processing circuit is arranged inside the circuit board mounting cavity; secondly, the sealing ring is arranged inside the sealing groove; and finally, the circuit board mounting cavity is sealed by the sealing cover so as to ensure that the protrudent part of the sealing cover is arranged in a fit mode inside the sealing cover and the clamping buttons clamp the sealing cover.
Description
Technical field
The present invention relates to a kind of Hall fuel level sensor and sealing technology thereof, relate in particular to structure and technology thereof by means of O-ring seal sealing Hall fuel level sensor.
Background technology
Hall fuel level sensor is a kind of novel automobile fuel level sensor that utilizes the Hall effect design, the variation of oil level is by the action of float lever controlling magnet in the fuel tank, thereby the magnetic field intensity that Hall Magnetic Induction element is in changes, Hall Magnetic Induction element will be exported the voltage signal of a characteristic oil level, measure the height of oil level indirectly.Wherein, need a treatment circuit that above-mentioned voltage signal is handled, can output to the height that shows oil level on the peripheral display device effectively.In order to prevent that extraneous fluid from influencing its serviceability to the erosion of the circuit board that is loaded with above-mentioned treatment circuit, pollution, necessarily requires circuit board and extraneous fluid to isolate.
Summary of the invention
It is simple that the technical matters that the present invention will solve provides a kind of hermetically-sealed construction, the Hall fuel level sensor of good seal performance.
The present invention includes shell and gland bonnet, a circuit board installation cavity is set on shell, the circuit board that is loaded with treatment circuit is installed in the foregoing circuit plate installation cavity; One seal groove is set on the lower surface of described shell, arranges an O-ring seal in the described seal groove; The teat that can cooperatively interact with described seal groove is set on the upper side of gland bonnet; Described teat cooperation is installed in the seal groove, thereby gland bonnet seals the circuit board installation cavity; A plurality of buckles that are used for the gland bonnet chucking are set on the lateral surface of outer casing underpart.
Preferably, the cross section diameter of described O-ring seal is 1MM.
By means of gland bonnet and O-ring seal the circuit board installation cavity is sealed, its hermetically-sealed construction is simple, can effectively the circuit board and the extraneous fluid that are loaded with treatment circuit be isolated, to reach good sealing effectiveness.And O-ring seal is a kind of fuel-proof NBR rubber parts, can satisfy the requirement of automobile industry particular surroundings.
Another technical matters that the present invention will solve provides a kind of sealing technology of above-mentioned Hall fuel level sensor, it may further comprise the steps: the circuit board that at first will be loaded with treatment circuit is installed in the circuit board installation cavity, then O-ring seal is installed in the seal groove, next by means of gland bonnet the circuit board installation cavity is sealed, and the teat cooperation on the assurance gland bonnet is installed in the seal groove and buckle tightens gland bonnet.
Above-mentioned sealing technology is simple, practical, can satisfy the requirement of automobile industry particular surroundings, easy operating, and the efficiency of assembling height, the properties of product of sealing are stable.
Description of drawings
Fig. 1 is a main TV structure synoptic diagram of the present invention;
Fig. 2 is a side-looking structural representation of the present invention.
Embodiment
As shown in Figure 1, Hall fuel level sensor comprises shell 1 and gland bonnet 2, and a circuit board installation cavity 1-1 is set on shell 1, and the circuit board that is loaded with treatment circuit is installed in the foregoing circuit plate installation cavity 1-1.
One seal groove is set on the lower surface of described shell 1, arranges an O-ring seal 3 in the described seal groove.Preferably, the cross section diameter of above-mentioned O-ring seal 3 is 1MM.
The teat 2-1 that can cooperatively interact with described seal groove is set on the upper side of gland bonnet 2.Described teat 2-1 cooperation is installed in the seal groove, thereby gland bonnet 2 seals circuit board installation cavity 1-1.
As illustrated in fig. 1 and 2, on four vertical lateral surfaces of shell 1, a buckle 4 is set respectively, so that with gland bonnet 2 chuckings.
When encapsulating, the circuit board that at first will be loaded with treatment circuit is installed in the circuit board installation cavity 1-1, then O-ring seal 3 is installed in the seal groove, next by means of gland bonnet 2 circuit board installation cavity 1-1 is sealed, and the teat 2-1 cooperation on the assurance gland bonnet 2 is installed in the seal groove and buckle 4 tightens gland bonnet 2.
Hall fuel level sensor still can satisfy seal request at following test condition:
1, temperature shock test
Test temperature :-40 ℃～+ 90 ℃;
Test period :-40 ℃, 30min; + 90 ℃, 30min; Temperature change: in 2 minutes;
Cycle index: 50 times;
Test period: accumulative total 50 hours.
2, oil resisting test
Damages such as test back liquid level sensor outward appearance should not have distortion, sealing-off, break.
Test temperature :+70 ℃;
Test(ing) medium: FAM-B (DIN51604);
Test method: in the complete immersion test liquid of liquid level sensor;
Test period: accumulative total 12 days.
3, wide band random vibration test
Test specimen is installed on the bracket assembly;
Test temperature: room temperature; With the test specimen place in circuit;
Test(ing) medium: kerosene raffinate, the per 6 minutes empty full circulation change of test(ing) medium are once;
Vibration frequency: 10～1000Hz, RMS=20m/s
2
The distribution of acceleration power spectral density:
10Hz：9.68(m/s
2)
2/Hz，
300Hz：0.32(m/s
2)
2/Hz，
1000Hz：0.03(m/s
2)
2/Hz，
Test is carried out three orthogonal directions: Z is to-vertical ground direction, and X is to-direction of traffic, Y to-perpendicular to above both direction, each direction test period: 22h;
Hang on chamber in by resistor disc vertical ground direction test specimen and keep each test specimen separately;
Test temperature/humidity: 23 ℃/83%, 40 ℃/92%;
Test period: 30 days;
Test(ing) medium: air.
Claims (3)
1, a kind of Hall fuel level sensor is characterized in that: comprise shell and gland bonnet, a circuit board installation cavity is set on shell, the circuit board that is loaded with treatment circuit is installed in the foregoing circuit plate installation cavity; One seal groove is set on the lower surface of described shell, arranges an O-ring seal in the described seal groove; The teat that can cooperatively interact with described seal groove is set on the upper side of gland bonnet; Described teat cooperation is installed in the seal groove, thereby gland bonnet seals the circuit board installation cavity; A plurality of buckles that are used for the gland bonnet chucking are set on the lateral surface of outer casing underpart.
2, the described a kind of Hall fuel level sensor of claim 1, it is characterized in that: the cross section diameter of described O-ring seal is 1MM.
3, the sealing technology of the described Hall fuel level sensor of claim 1, it is characterized in that: may further comprise the steps, the circuit board that at first will be loaded with treatment circuit is installed in the circuit board installation cavity, then O-ring seal is installed in the seal groove, next by means of gland bonnet the circuit board installation cavity is sealed, and the teat cooperation on the assurance gland bonnet is installed in the seal groove and buckle tightens gland bonnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100255033A CN101476919A (en) | 2009-01-23 | 2009-01-23 | Hall fuel level sensor and its sealing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100255033A CN101476919A (en) | 2009-01-23 | 2009-01-23 | Hall fuel level sensor and its sealing technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101476919A true CN101476919A (en) | 2009-07-08 |
Family
ID=40837664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100255033A Pending CN101476919A (en) | 2009-01-23 | 2009-01-23 | Hall fuel level sensor and its sealing technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101476919A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235898A (en) * | 2010-04-28 | 2011-11-09 | 苏州工业园区易辰电子系统有限公司 | Sensing device for liquid level sensor |
| CN102235899A (en) * | 2010-04-28 | 2011-11-09 | 苏州工业园区易辰电子系统有限公司 | Digital liquid level sensor |
| CN102419190A (en) * | 2011-12-20 | 2012-04-18 | 四川兴达明科机电工程有限公司 | Sensor sealing technology |
| CN103487105A (en) * | 2013-09-09 | 2014-01-01 | 江苏奥力威传感高科股份有限公司 | Rotary support structure for sensors |
| CN108458110A (en) * | 2018-05-02 | 2018-08-28 | 隆鑫通用动力股份有限公司 | A kind of seal assembly and generator |
-
2009
- 2009-01-23 CN CNA2009100255033A patent/CN101476919A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235898A (en) * | 2010-04-28 | 2011-11-09 | 苏州工业园区易辰电子系统有限公司 | Sensing device for liquid level sensor |
| CN102235899A (en) * | 2010-04-28 | 2011-11-09 | 苏州工业园区易辰电子系统有限公司 | Digital liquid level sensor |
| CN102419190A (en) * | 2011-12-20 | 2012-04-18 | 四川兴达明科机电工程有限公司 | Sensor sealing technology |
| CN102419190B (en) * | 2011-12-20 | 2014-04-23 | 四川兴达明科机电工程有限公司 | Sensor sealing technology |
| CN103487105A (en) * | 2013-09-09 | 2014-01-01 | 江苏奥力威传感高科股份有限公司 | Rotary support structure for sensors |
| CN108458110A (en) * | 2018-05-02 | 2018-08-28 | 隆鑫通用动力股份有限公司 | A kind of seal assembly and generator |
| CN108458110B (en) * | 2018-05-02 | 2024-02-27 | 隆鑫通用动力股份有限公司 | Sealing assembly and generator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101476919A (en) | Hall fuel level sensor and its sealing technology | |
| CN100468022C (en) | Novel piezoresistance type pressure pickup and method for making same | |
| CN1914494A (en) | Isolated pressure transducer | |
| KR20130018857A (en) | Package structure for silicon pressure sensor | |
| CN200943707Y (en) | High temperature magnetic liquid seal water-cooling device | |
| CN107063987A (en) | The concrete test case and its test method of a kind of consideration plateau effects of air pressure | |
| CN205352589U (en) | Keep apart waterproof type pressure sensor | |
| CN102944467B (en) | Method and device for testing static lateral pressure coefficient in soil body water saturation-drainage cycle | |
| US20200217736A1 (en) | Pressure sensor system and method for its manufacture | |
| CN216646507U (en) | Deep underground rock excavation effect simulation test device | |
| CN103698068B (en) | Electrostatic chuck basic performance detection device and detection method thereof | |
| CN215004074U (en) | Waterproof structure of pressure sensor | |
| AU2013366127B2 (en) | Improved pressure sensor comprising a hermetic casing | |
| CN101476920A (en) | Sealing technology of Hall fuel level sensor | |
| CN210906069U (en) | Tensioning device for MPCVD (multi-phase chemical vapor deposition) | |
| CN201945448U (en) | Vacuum environment test system of directly operated type electromagnetic valve | |
| CN203657947U (en) | Electrostatic chuck basic performance detection apparatus | |
| CN203275383U (en) | Oil seal mud water experiment equipment | |
| CN109341660A (en) | Universal level-metre | |
| CN213022107U (en) | Waterproof and anti-corrosion meteorological air pressure sensing device | |
| CN107576691A (en) | Humidity sensor in a kind of chemical experiment room | |
| CN204213436U (en) | A kind of seal chamber is dust-proof, waterproof, flameproof apparatus | |
| CN106017597A (en) | Novel downhole water meter controller | |
| CN111341640A (en) | Method and device for pouring sealant into photomultiplier tube assembly | |
| CN200989248Y (en) | Engine electronic controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090708 |