CN205091029U - Oil level sensor - Google Patents
Oil level sensor Download PDFInfo
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- CN205091029U CN205091029U CN201520784887.8U CN201520784887U CN205091029U CN 205091029 U CN205091029 U CN 205091029U CN 201520784887 U CN201520784887 U CN 201520784887U CN 205091029 U CN205091029 U CN 205091029U
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- level sensor
- steel pipe
- fuel level
- resistance
- float
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Abstract
The utility model provides an oil level sensor, oil level sensor includes: steel pipe, a plurality of tongue tube and a plurality of resistance, each tongue tube sets up in the steel pipe according to predetermineeing the axial of interval along the steel pipe, and each resistance is established ties in proper order between output and earthing terminal, and the one end of each tongue tube is connected to respectively between two corresponding resistance, and the other end of each tongue tube is connected to the earthing terminal respectively, float and magnet, float slidable ground sets up on the skin of steel pipe along the axial of steel pipe, and magnet is inlayed in the float. The utility model discloses an export the measurement mode of different resistances through the tongue tube, increased oil level sensor's leakproofness and life, effectively prevented the condition of polluting fuel to the reliability and safety when measuring has been improved. The utility model discloses be applicable to in the great oil tank of heavily card, motor bus and boats and ships still betterly to the oil level sensor who adopts the slide resistance chip architecture has been replaced.
Description
Technical field
The utility model relates to automobile sensor field, particularly a kind of fuel level sensor.
Background technology
At present, utilize fuel level sensor measured automobiles fuel tank fuel number, the structure that conventional fuel level sensor adopts float to drive slide plate to slide on resistor disc, exports corresponding resistance value by the movement of float on different oil level height.But, the fuel level sensor of swept resistance chip architecture is adopted to there is following a few point defect:
1, the realization of change in resistance needs float to drive slide plate to carry out the slip of contact at resistor disc, and therefore more difficult to the sealing of resistor disc, the easy stacked impurity of resistor disc, causes resistance to change, cause larger measuring error.
2, there is certain restriction in the life-span of slide plate.Because in the process of actual automobilism, float rocking with oil level, is fluctuating in certain oil level altitude range always, thus drive slide plate to slide among a small circle, exacerbate the slip number of times of slide plate on resistor disc, obvious unstable wear, makes the lost of life of slide plate.
3, due to slide plate upper contact and resistor disc contact wear and tear after produce particulate and can enter in fuel, cause the wearing and tearing of other rotatable parts.
4, due to the design of structural principle, the groove of resistor disc is comparatively meticulous, and close displacement point can because the resistance fluctuated appears in the contact situation of slide plate contact and resistor disc, for larger fuel tank, require that the displacement identified is comparatively large, too meticulous resistance is inapplicable on the contrary.
In sum, the defect that the fuel level sensor based on above-mentioned employing swept resistance chip architecture exists, needs to improve accordingly fuel level sensor.
Utility model content
The technical problems to be solved in the utility model is that the fuel level sensor sealing adopting swept resistance chip architecture is poor, serviceable life is short in order to overcome in prior art, and the defect of the wear particle of resistor disc meeting pollution feul, a kind of fuel level sensor is provided.
The utility model solves above-mentioned technical matters by following technical proposals:
A kind of fuel level sensor, described fuel level sensor comprises:
Steel pipe, several tongue tubes and several resistance, tongue tube described in each is axially set in described steel pipe according to predetermined interval along described steel pipe, resistance described in each is connected serially between output and ground successively, one end of tongue tube described in each is connected between two corresponding described resistance respectively, and the other end of tongue tube described in each is connected to described earth terminal respectively;
Float and magnet, described float is slidably along on the skin being axially set in described steel pipe of described steel pipe, and described magnet is embedded in described float.
In this programme, the serviceable life of described tongue tube can reach 5000000 times, thus adds the serviceable life of described fuel level sensor.
Preferably, described fuel level sensor also comprises PCB (PrintedCircuitBoard, printed circuit board (PCB)), and described PCB is axially set in described steel pipe along described steel pipe, and described tongue tube and described resistance are all arranged on described PCB.
Preferably, described fuel level sensor also comprises plastic casing, and described plastic casing is arranged in described steel pipe, and described PCB is sheathed in described plastic casing.
In this programme, described plastic casing is used for sealing and protecting described PCB.
Preferably, described fuel level sensor also comprises the first seal, and described first seal is arranged at one end of described steel pipe, and described first seal comprises the first gland bonnet and the first sealing-plug.
Preferably, described fuel level sensor also comprises the second seal, flange pedestal, clip, cable and corrugated tube, described second seal and described flange pedestal are arranged at the other end of described steel pipe respectively, described corrugated tube is connected with the other end of described steel pipe by described clip and described flange pedestal, described cable jacket is located in described corrugated tube, and described cable is electrically connected with described output terminal.
Preferably, described second seal comprises the second gland bonnet, the second sealing-plug, sealing gasket and fluid sealant.
In this programme, sealed the two ends of described steel pipe by described first seal and described second seal, thus prevent fluid from entering in described steel pipe, and prevent the parts in described steel pipe or impurity from falling into fluid and the situation of pollution feul.
Preferably, described fuel level sensor also comprises back-up ring, and described back-up ring is installed in the skin of described steel pipe, and described back-up ring is for limiting the shift position of described float.
Preferably, the material of described steel pipe is stainless steel.
Preferably, the span of described predetermined interval is 10 ~ 30mm.
Preferably, the span of the length of described steel pipe is 50 ~ 1500mm.
In this programme, described fuel level sensor can meet the measurement to all size fuel tank, is applicable to the larger fuel tank of displacement request to identifying especially better, as heavily blocked, the fuel tank of motor bus and boats and ships.
On the basis meeting this area general knowledge, above-mentioned each optimum condition, can combination in any, obtains each preferred embodiments of the utility model.
Positive progressive effect of the present utility model is:
The utility model adopts the metering system being exported different resistance by tongue tube, adds sealing and the serviceable life of fuel level sensor, effectively prevent the situation of pollution feul, thus reliability and safety when improve measurement.The utility model is also applicable to heavily to block preferably, in the comparatively large tank of motor bus and boats and ships, thus instead of the fuel level sensor adopting swept resistance chip architecture.
Accompanying drawing explanation
Fig. 1 is the structural representation of the fuel level sensor of the utility model one preferred embodiment.
Fig. 2 is the vertical view of the fuel level sensor of the utility model one preferred embodiment.
Fig. 3 is the tongue tube of fuel level sensor and the circuit connection diagram of resistance of the utility model one preferred embodiment.
Embodiment
Lift preferred embodiment below, and come by reference to the accompanying drawings clearlyer intactly the utility model to be described.
As shown in Figures 1 and 2, the utility model provides a kind of fuel level sensor, and described fuel level sensor comprises:
Stainless-steel tube 1, PCB2, plastic casing 5, several tongue tubes 3 and several resistance 4, described PCB2 to be sheathed in described plastic casing 5 and to be axially set in described stainless-steel tube 1 along described stainless-steel tube 1, described plastic casing 5 is arranged in described stainless-steel tube 1, described plastic casing 5 is for sealing and protecting described PCB2, tongue tube 3 described in each is axially set on described PCB according to predetermined interval along described stainless-steel tube 1, the span of described predetermined interval is 10 ~ 30mm, and described resistance 4 is arranged on described PCB2;
Float 6, magnet 7 and the first fluid sealant 8, described float 6 is slidably along on the skin being axially set in described stainless-steel tube 1 of described stainless-steel tube 1, described magnet 7 is embedded in described float 6, described first fluid sealant 8 embeds the opening after described magnet 7 for being sealed in described float 6 li, thus the situation preventing from fluid from entering into described float 6 causing damaging described magnet 7;
Back-up ring 9, described back-up ring 9 is fixedly installed on the skin of described stainless-steel tube 1, described back-up ring 9 is near the top of described stainless-steel tube 1, and the top of described stainless-steel tube 1 refers to that described stainless-steel tube 1 is not soaked in one end of fluid, and described back-up ring 9 is for limiting the shift position of described float 6;
First gland bonnet 10 and the first sealing-plug 19, described first gland bonnet 10 and described first sealing-plug 19 are arranged at the bottom of described stainless-steel tube 1, the bottom of described stainless-steel tube 1 refers to that described stainless-steel tube 1 is soaked in one end of fluid, described first sealing-plug 19 to be filled in and after blocking the porch of the bottom of described stainless-steel tube 1, covered the bottom of described stainless-steel tube 1 by described first gland bonnet 10, described first gland bonnet 10 and described first sealing-plug 19 are for sealing the bottom of described stainless-steel tube 1 and preventing fluid from entering in described stainless-steel tube 1;
Second gland bonnet 11, second sealing-plug 20, described second sealing-plug 20 to be filled in and after blocking the porch on the top of described stainless-steel tube 1, covered the top of described stainless-steel tube 1 by described second gland bonnet 11, described second gland bonnet 11 and the second sealing-plug 20 are for sealing the top of described stainless-steel tube 1;
Sealing gasket 12, flange pedestal 14, fluid sealant 13, clip 15, cable 17, corrugated tube 18 and plug 16, described flange pedestal 14 is fixedly installed on the skin on the top of described stainless-steel tube 1 by the mode of welding, described sealing gasket 12 pads the below at described flange pedestal 14, described cable 17 is sheathed in described corrugated tube 18, described corrugated tube 18 is connected with the top of described stainless-steel tube 1 by described clip 15 and described flange pedestal 14, described clip 15 is for the connection between fastening described corrugated tube 18 and described stainless-steel tube 1, described flange pedestal 14 increases the strength of joint between described corrugated tube 18 and described stainless-steel tube 1, one end of described cable 17 is fixedly installed on the inside of described stainless-steel tube 1 by described fluid sealant 13 and is electrically connected with the output terminal of described PCB2, the other end of described cable 17 connects described plug 16, described plug 16 is for connecting external unit, the resistance value that described fuel level sensor exports exports described external unit to by described cable 17 and described plug 16.
As shown in Figure 3, resistance 4 described in each is connected serially between the output and ground of described PCB2 successively, one end of tongue tube 3 described in each is connected between two corresponding described resistance 4 respectively, described in each, the other end of tongue tube 3 is connected to described earth terminal respectively, therefore according to the disconnection or closed of different described tongue tubes 3, different resistance values can be exported, the described tongue tube of part 3 and described resistance 4 are only shown in Fig. 3, the quantity of described tongue tube 3 and described resistance 4 is not limited to the quantity shown in Fig. 3, but described tongue tube 3 is substantially identical with above-mentioned connected mode with the connected mode of described resistance 4.The serviceable life of described tongue tube 3 can reach 5000000 times, thus adds the serviceable life of described fuel level sensor.
When use described fuel level sensor measure fuel tank inner fluid number time, described fuel level sensor is put in fluid, the bottom of described stainless-steel tube 1 is soaked in fluid, along with the movement of described float 6 on different oil level height, described magnet 7 controls the disconnection or closed of corresponding described tongue tube 3, thus export different resistance values, by analyze with calculate the resistance value that exports determine fluid number.
The span of the length of described stainless-steel tube 1 is 50 ~ 1500mm, therefore can meet the measurement to all size fuel tank, is applicable to the fuel tank larger to the displacement request identified especially better.
Described fuel level sensor adds sealing and serviceable life, effectively prevent the situation of pollution feul, thus reliability and safety when improve measurement, and be applicable to preferably heavily to block, in the comparatively large tank of motor bus and boats and ships, thus instead of the fuel level sensor adopting swept resistance chip architecture.
Although the foregoing describe embodiment of the present utility model, it will be understood by those of skill in the art that these only illustrate, protection domain of the present utility model is defined by the appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present utility model and essence, can make various changes or modifications to these embodiments, but these change and amendment all falls into protection domain of the present utility model.
Claims (10)
1. a fuel level sensor, is characterized in that, described fuel level sensor comprises:
Steel pipe, several tongue tubes and several resistance, tongue tube described in each is axially set in described steel pipe according to predetermined interval along described steel pipe, resistance described in each is connected serially between output and ground successively, one end of tongue tube described in each is connected between two corresponding described resistance respectively, and the other end of tongue tube described in each is connected to described earth terminal respectively;
Float and magnet, described float is slidably along on the skin being axially set in described steel pipe of described steel pipe, and described magnet is embedded in described float.
2. fuel level sensor as claimed in claim 1, it is characterized in that, described fuel level sensor also comprises PCB, and described PCB is axially set in described steel pipe along described steel pipe, and described tongue tube and described resistance are all arranged on described PCB.
3. fuel level sensor as claimed in claim 2, it is characterized in that, described fuel level sensor also comprises plastic casing, and described plastic casing is arranged in described steel pipe, and described PCB is sheathed in described plastic casing.
4. fuel level sensor as claimed in claim 1, it is characterized in that, described fuel level sensor also comprises the first seal, and described first seal is arranged at one end of described steel pipe, and described first seal comprises the first gland bonnet and the first sealing-plug.
5. fuel level sensor as claimed in claim 4, it is characterized in that, described fuel level sensor also comprises the second seal, flange pedestal, clip, cable and corrugated tube, described second seal and described flange pedestal are arranged at the other end of described steel pipe respectively, described corrugated tube is connected with the other end of described steel pipe by described clip and described flange pedestal, described cable jacket is located in described corrugated tube, and described cable is electrically connected with described output terminal.
6. fuel level sensor as claimed in claim 5, it is characterized in that, described second seal comprises the second gland bonnet, the second sealing-plug, sealing gasket and fluid sealant.
7. fuel level sensor as claimed in claim 1, it is characterized in that, described fuel level sensor also comprises back-up ring, and described back-up ring is installed in the skin of described steel pipe, and described back-up ring is for limiting the shift position of described float.
8. fuel level sensor as claimed in claim 1, it is characterized in that, the material of described steel pipe is stainless steel.
9. as the fuel level sensor in claim 1 ~ 8 as described in any one, it is characterized in that, the span of described predetermined interval is 10 ~ 30mm.
10. fuel level sensor as claimed in claim 9, it is characterized in that, the span of the length of described steel pipe is 50 ~ 1500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520784887.8U CN205091029U (en) | 2015-10-10 | 2015-10-10 | Oil level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520784887.8U CN205091029U (en) | 2015-10-10 | 2015-10-10 | Oil level sensor |
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| Publication Number | Publication Date |
|---|---|
| CN205091029U true CN205091029U (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520784887.8U Active CN205091029U (en) | 2015-10-10 | 2015-10-10 | Oil level sensor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124005A (en) * | 2016-08-18 | 2016-11-16 | 四川泛华航空仪表电器有限公司 | The anti-interference BL of resistance-strain type |
| 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 |
| CN109443484A (en) * | 2018-12-18 | 2019-03-08 | 上海米尔圣传感器有限公司 | A kind of oil level indicator |
| CN112097867A (en) * | 2020-09-07 | 2020-12-18 | 合肥康特微科技有限公司 | Active electronic type oil level sensor suitable for sensing oil level of automobile oil tank |
-
2015
- 2015-10-10 CN CN201520784887.8U patent/CN205091029U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124005A (en) * | 2016-08-18 | 2016-11-16 | 四川泛华航空仪表电器有限公司 | The anti-interference BL of resistance-strain type |
| 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 |
| CN109443484A (en) * | 2018-12-18 | 2019-03-08 | 上海米尔圣传感器有限公司 | A kind of oil level indicator |
| CN112097867A (en) * | 2020-09-07 | 2020-12-18 | 合肥康特微科技有限公司 | Active electronic type oil level sensor suitable for sensing oil level of automobile oil tank |
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