CN106404124A - Liquid level sensor - Google Patents
Liquid level sensor Download PDFInfo
- Publication number
- CN106404124A CN106404124A CN201610397417.5A CN201610397417A CN106404124A CN 106404124 A CN106404124 A CN 106404124A CN 201610397417 A CN201610397417 A CN 201610397417A CN 106404124 A CN106404124 A CN 106404124A
- Authority
- CN
- China
- Prior art keywords
- liquid level
- level sensor
- cover body
- resistor disc
- housing
- 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.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/32—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using rotatable arms or other pivotable transmission elements
- G01F23/36—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using rotatable arms or other pivotable transmission elements using electrically actuated indicating means
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Level Indicators Using A Float (AREA)
Abstract
The invention provides a liquid level sensor which comprises a resistor disc base, a resistor disk firmly installed on the resistor disk base, a support, a lever arm, a floater, and a cover body, wherein the support is equipped with a slide contact plate, and the slide contact plate can be slid on the resistor disk; the lever arm is installed on the support; the floater is installed on the lever arm; and the cover body is used to form enclosed space, the enclosed space has an opening relative to a liquid level, the opening is used for free motion of the lever arm, and at least parts of the resistor disk and the slide contact plate are located in the enclosed space. The liquid level sensor provided by the invention can still guarantee measurement accuracy after long-term use.
Description
Technical field
The present invention relates to the liquid level of level height passes in a kind of liquid level sensor, more particularly, to measuring vehicle fuel tank
Sensor.
Background technology
Among automobile instrument, the instruction of oil mass is considerable, and the instruction dependence of oil mass is liquid level sensor.Existing
Have among technology, have a kind of liquid level sensor to be to drive lever arm by float, lever arm drives the cunning being arranged on support again
Contact slides on resistor disc, and liquid level change information is converted into resistance variations information, then passes through signal circuit and output
Interface exports liquid level signal to instrument, to allow people obtain liquid level information.
But, wiping piece is contacted with gasoline for a long time with resistor disc, is affected by factors such as oil product component difference, impurity,
After the long-time use of this liquid level sensor, the contact with resistor disc for the wiping piece there occurs change, so that resistance value deviates
Standard resistance, makes the output signal of telecommunication of sign level value change again, ultimately results in the change that pointer can not accurately reflect liquid level
Change.
Content of the invention
For overcoming above-mentioned difficulties, the present invention is intended to provide a kind of liquid level sensor, can reduce or avoid wiping piece and electricity
Resistance piece is affected by gasoline, so that this liquid level sensor remains to keep the accuracy of measurement after a long time use.
The present invention provides a kind of liquid level sensor, including：Resistor disc pedestal；Resistor disc, is fixedly installed in described resistor disc
On pedestal；Support, is provided with wiping piece, described wiping piece is slidably on described resistor disc；Lever arm, is installed on described support
On；Float, is installed on described lever arm；Cover body, for forming enclosed space, described enclosed space has out with respect to liquid level
Mouthful, described opening be used for so that lever arm freely activity, described resistor disc and described slip contact be at least partially disposed at described in enclose
Cover within space.
As preferred, described cover body is formed in one.
As preferred, described liquid level sensor further includes lid, linking arm and housing, and described linking arm is connected to
Described lid and described housing, described cover body is installed on described lid.
As preferred, further include lid, linking arm and housing, described linking arm is connected to described lid and described
Housing, described cover body is installed on described housing, and described housing and described cover body are collectively forming described enclosed space.
As preferred, described cover body is mounted on described housing.
As preferred, described cover body is integrally formed with described housing.
As preferred, described cover body has top surface body, side surface body and above body；Described resistor disc and described wiping piece patch
It is bordering on described top surface body.
As preferred, described resistor disc pedestal is bent to form first level portion and the first vertical component effect, and described support corresponds to
Described resistor disc is bent to form the second horizontal part and the second vertical component effect, and described resistor disc is located in described first level portion, described
Wiping piece be arranged on the second horizontal part.
As preferred, described liquid level sensor further includes for assisting described resistor disc pedestal to install leading of positioning
Rail.
The liquid level sensor of the present invention, by cover body with by way of forming enclosed space so that resistor disc, wiping piece and vapour
The time of contact of oil reduces, even more so that resistor disc and wiping piece are not come in contact with gasoline.Compare currently existing scheme, existing skill
The contact with resistor disc for the wiping piece among art can change to cause resistance value to deviate standard resistance, the liquid level of the present invention
Sensor after a long time use, remains to keep the accuracy of measurement.
Brief description
Fig. 1 is that the liquid level sensor of first embodiment of the present invention is arranged on the schematic diagram in petrol tank；
Fig. 2 is the exploded view of the liquid level sensor shown in Fig. 1；
Fig. 3 is the sectional view of the liquid level sensor shown in Fig. 1；
Fig. 4 is the schematic diagram of the liquid level sensor of second embodiment of the present invention；
Fig. 5 is the exploded view of the liquid level sensor shown in Fig. 4；
Fig. 6 is the schematic diagram of the cover body shown in Fig. 4；
Fig. 7 is the exploded view of the liquid level sensor of the 3rd embodiment of the present invention；
Fig. 8 is the schematic diagram of cover body component internal structure shown in Fig. 7；
Fig. 9 is the resistor disc of liquid level sensor shown in Fig. 7, resistor disc pedestal, wiping piece, support, the combination of lever arm are shown
It is intended to.
Drawing reference numeral explanation
Lid 10 linking arm 20
Lever arm 3 free segment 31 interlude 32
Planomural face 41 before instruction section 33 housing 4
Guide rail 5,5 ' stoppers 6,6 ' slopes 61
Resistor disc pedestal 7 resistor disc 15 first level portion 71
First vertical component effect, 72 support 8 wiping piece 9
Fixed clamp block 80 second horizontal part 81 second vertical component effect 82
Cover body 2 above body 21 body 22 below
Side surface body 23 top surface body 24
Float 12 enclosed space 13
Specific embodiment
Below in conjunction with the accompanying drawings the liquid level sensor of the present invention is described in detail.
Fig. 1 to Fig. 3 is the schematic diagram of first embodiment.
As shown in figure 1, the liquid level sensor of the present invention is installed in petrol tank, liquid level sensor has and is fixed on lever arm
Float 12 on 3.Float 12 changes position with the variation of gasoline levels, and then drives lever arm 3 to deflect, lever arm
3 deflection makes resistance change, and is reflected in instrument, thus people obtain liquid level information.
As shown in Fig. 2 liquid level sensor includes lid 10, linking arm 20 and substantially tubular housing 4 from top to bottom, lid
Body 10 is used for being fixed on above petrol tank, and linking arm 20 is used for being fixedly connected lid 10 and housing 4.Housing 4 has front planomural
Face 41.Front planomural face 41 is provided with a pair of guide rails 5 and stopper 6, and stopper 6 is located between guide rail 5.
Liquid level sensor also includes resistor disc pedestal 7, resistor disc 15, wiping piece 9, support 8, lever arm 3, cover body 2 and floats
Son 12.
Resistor disc 15 is fixedly installed on resistor disc pedestal 7, and support 8 is installed in rotation on resistor disc pedestal 7, please join
See Fig. 3, the rotation of lever arm 3 drives support 8 to rotate around central shaft I-I.Support 8 is provided with wiping piece 9, wiping piece 9 and resistance
Piece 15 elasticity abuts.When support 8 relative resistance piece pedestal 7 rotates, wiping piece 9 slides on resistor disc 15 so that resistance occurs
Change.
Support 8 is provided with two pairs of fixed clamp blocks 80, for gripping into the lever arm 3 of cylindrical state, thus, thick stick
Lever arm 3 is removably installed on support 8.Lever arm 3 is formed by three sections, be respectively fixedly connected float 12 free segment 31,
The instruction section 33 consistent with support 8 bearing of trend and the above two interlude 32 of connection.Instruction section 33 is joined with fixed clamp block 80
Close.
During assembling, resistor disc pedestal 7, resistor disc 15, wiping piece 9, support 8 and lever arm 3 form an assembly, combination
Body slides into the top in front planomural face 41 from the bottom to top by guide rail 5, because stopper 6 has a slope 61 (referring to Fig. 3),
Therefore, assembly can gradually transition until positioned at the top of stopper 6, but the top surface of stopper 6 is perpendicular to front planomural face 41,
Assembly cannot down be dropped.
Cover body 2 is installed on the front planomural face 41 of housing 4, so, forms one and encloses and cover between cover body 2 and front planomural face 41
Space 13.Among the present embodiment, this cover body 2 is four face compositions, before respectively one top surface body 24, two side faces body 23 and
Face body 21, is similar to cuboid, and after planomural face 41 before corresponding to, body does not exist, and bottom surface body does not also exist.Before cover body 2 is installed on
During planomural face 41, it is not just sealing that the enclosed space 13 being correspondingly formed only has bottom, for lever arm 3 flexible motion.
When refueling toward in petrol tank, in the enclosed space 13 being internally formed due to cover body 2, there is gas, and cover body 13
There is the opening positioned at bottom, the position positioned at the opening of bottom is lived by plug cock, so gas cannot be discharged, now, although gasoline
The liquid level of case is gradually increasing, but the liquid level within cover body 2 keeps constant, and so, gas is sealed in cover body 2 and front planomural face 41
Within the enclosed space 13 jointly enclosing, resistor disc 15 and wiping piece 9 are located within full of the enclosed space 13 of air, thus keeping away
Exempt from resistor disc 15 and wiping piece 9 has been immersed in possibility among gasoline, this avoid resistor disc 15 and wiping piece 9 is subject to gasoline
Corrosion, it is to avoid resistor disc 15 and wiping piece 9 affected by well cuts so that cunning on resistor disc 15 for the wiping piece 9
Moving is not affected by gasoline, to keep the sensitive and accurate of contact.
Certainly, among other embodiment, if the aperture position of cover body 2 bottom is too up so that cover body 2 and front planomural
The enclosed space 13 being formed between face 41 is not big so that resistor disc 15 and wiping piece 9 part are located within enclosed space 13, this
Sample, in petrol tank during oiling, resistor disc 15 and wiping piece 9 are it is possible to make lower part be located among gasoline immersion, this is still
So belong within the connotation of the present invention.So, the setting of enclosed space, plays reduction resistor disc 15 and wiping piece 9 soaks
Degree among gasoline, reduces resistor disc 15 and wiping piece 9 is subject to the impact of well cuts so that wiping piece 9 is in resistance
Slip on piece 15 is affected by gasoline as little as possible, to keep the sensitive and accurate of contact as far as possible.
Therefore, in the middle of the present embodiment, the position of cover body 2 top surface body 24 is as far as possible close toward the upper end of housing 4, so, electricity
The installation of resistance piece 15 and wiping piece 9 is as far as possible up close.In this manner it is ensured that the enclosed space 13 being formed in cover body 2 more may be used
Lean on, when gasoline starts to consume, the probability that resistor disc 15 contacts gasoline with wiping piece 9 is less.So, enclosed space 13 should
More secure with function.
Fig. 4 to Fig. 6 is the schematic diagram of second embodiment.
The major part that second embodiment is different from first embodiment is, the structure of cover body and position.As Fig. 5 and Fig. 6 institute
Show, among second embodiment, cover body 2 ' is made up of five faces, including body 22, two side faces body 23 and after one above body 21,
One top surface body 24, similar cuboid, only bottom surface body does not exist, and to form the opening with respect to liquid level, is adapted to lever arm 3
Freely activity.Show consideration for below together in front planomural face 41.
Guide rail 5 ' and stopper 6 ' are not arranged on the front planomural face 41 of housing 4, and guide rail 5 ' and stopper 6 ' are arranged on
On the internal face of cover body 2 ', among the present embodiment, it is arranged on below on the wall to enclosed space of body 22.As shown in figure 4, it is whole
Individual cover body 2 ', is fixedly installed on lid 10.As shown in fig. 6, arrow A represent resistor disc substrate 7 slip into direction.
Among first embodiment, because the front planomural face 41 of cover body 2 and housing needs to coordinate, formed to enclose with common leg and cover
Space 13, this cooperation installation should be noted sealing；But, the cover body 2 ' of second embodiment does not need the front planomural with housing
Face 41 is collectively forming enclosed space, the cover body 2 ' in the middle of second embodiment is integrally formed, it is to avoid the installation with housing 4
Trouble.In addition, cover body 2 ' is directly mounted on lid 10, and the installation site of lid 10 is the top surface of fuel tank, therefore, cover body
2 ' the enclosed spaces being internally formed be nearly seated at fuel tank internal extreme higher position so that resistor disc 15 and wiping piece 9 at utmost
Avoid or reduce the probability being immersed among gasoline.
Fig. 7 to Fig. 9 is the schematic diagram of 3rd embodiment.
As shown in fig. 7, liquid level sensor includes lid 10, linking arm 20 and substantially tubular housing 4 from top to bottom, lid
Body 10 is used for being fixed on place above petrol tank, and linking arm 20 is used for being fixedly connected lid 10 and housing 4.Liquid level sensor also wraps
Include resistor disc pedestal, resistor disc 15, wiping piece 9, support, lever arm 3, cover body 2 and float 12.
As shown in Figure 8 and Figure 9, cover body 2 has a top surface body 24, two side faces body 23 and one above body 21；Resistor disc pedestal
It is bent to form first level portion 71 and the first vertical component effect 72, the corresponding resistor disc pedestal of support is bent to form the second horizontal part 81 and the
Two vertical component effects 82, resistor disc 15 is located in first level portion 71, and wiping piece 9 is arranged on the second horizontal part 81；First level portion
71 and second horizontal part 81 be all posted by top surface body 24, in other words, first level portion 71 is all parallel with the second horizontal part 81
In top surface body 24；The second vertical component effect 82 correspondence corresponding to support is installed on the first vertical component effect 71 of resistor disc pedestal.Permissible
It is understood by, support is located on the second vertical component effect 82 with respect to the rotary shaft that resistor disc pedestal rotates.
When lever arm 3 rotates, the second vertical component effect 82 of support is driven to rotate, the second vertical component effect 82 and the second horizontal part 81
It is formed in one, the rotation of the second vertical component effect 82 necessarily drives the rotation of the second horizontal part 82；However, the first of resistor disc pedestal
Horizontal part 71 is fixedly installed on the top surface body 24 of cover body 2, the first level portion 71 of resistor disc pedestal and the first vertical component effect 72 1
Body formed, therefore, first level portion 71 and the first vertical component effect 72 remain stationary as.So, resistor disc 15 belongs to static, wiping piece
9 belong to dynamic.
In sum, the liquid level sensor of the present invention, employs cover body to form enclosed space, and this enclosed space is relatively
The opening of liquid level, among refueling process, liquid level rises, and opening is blocked by oil, and the gas of enclosed space is closed in the inside, makes
Obtain wiping piece and the relative motion of resistor disc occurs in gassiness enclosed space, therefore, do not soaked by gasoline, can reduce
The impact of gasoline, thus keep sensitive contact, to obtain accurate measured value.
It should be appreciated that cover body not only can be integrally formed with housing it is also possible to cover body is removably installed in shell
On body；Or cover body is independently shaped to enclosing of single opening and covers object.
It should be noted that above example is only in order to illustrate technical scheme rather than to the scope of the present invention
Restriction, although being explained in detail to the present invention with reference to preferred embodiment, it will be understood by those within the art that, can
To modify to technical scheme or equivalent, without deviating from the spirit and scope of technical solution of the present invention.
Claims (9)
1. a kind of liquid level sensor is it is characterised in that include：
Resistor disc pedestal；
Resistor disc, is fixedly installed on described resistor disc pedestal；
Support, is provided with wiping piece, described wiping piece is slidably on described resistor disc；
Lever arm, is installed on described support；
Float, is installed on described lever arm；
Cover body, for forming enclosed space, described enclosed space has opening with respect to liquid level, and described opening is used for so that lever
Arm freely activity, described resistor disc and described slip contact are at least partially disposed within described enclosed space.
2. liquid level sensor according to claim 1 is it is characterised in that described cover body is formed in one.
3. liquid level sensor according to claim 1 and 2 is it is characterised in that further include lid, linking arm and shell
Body, described linking arm is connected to described lid and described housing, and described cover body is installed on described lid.
4. liquid level sensor according to claim 1 is it is characterised in that further include lid, linking arm and housing, institute
State linking arm and be connected to described lid and described housing, described cover body is installed on described housing, described housing and described cover body
It is collectively forming described enclosed space.
5. liquid level sensor according to claim 4 is it is characterised in that described cover body is mounted at described housing
On.
6. liquid level sensor according to claim 4 is it is characterised in that described cover body is integrally formed with described housing.
7. liquid level sensor according to claim 1 is it is characterised in that described cover body has top surface body, side surface body and front
Face body；Described resistor disc and described wiping piece are close on described top surface body.
8. liquid level sensor according to claim 8 is it is characterised in that described resistor disc pedestal is bent to form first level
Portion and the first vertical component effect, the corresponding described resistor disc of described support is bent to form the second horizontal part and the second vertical component effect, described resistance
Piece is located in described first level portion, and described wiping piece is arranged on the second horizontal part.
9. liquid level sensor according to claim 1 is it is characterised in that further include for assisting described resistance chip base
Seat installs the guide rail of positioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610397417.5A CN106404124B (en) | 2016-06-06 | 2016-06-06 | Liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610397417.5A CN106404124B (en) | 2016-06-06 | 2016-06-06 | Liquid level sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106404124A true CN106404124A (en) | 2017-02-15 |
| CN106404124B CN106404124B (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610397417.5A Active CN106404124B (en) | 2016-06-06 | 2016-06-06 | Liquid level sensor |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050583A (en) * | 1989-09-25 | 1991-04-10 | 环境第一公司 | Independently be installed in the anti-sewage grinder pump liquid level tank level control system that floods in the cylinder |
| JP2005308563A (en) * | 2004-04-22 | 2005-11-04 | Toyota Motor Corp | Detection device and vehicle equipped with detection device |
| CN101660936A (en) * | 2009-09-28 | 2010-03-03 | 蒋勤舟 | Oil level sensing device |
| CN201503298U (en) * | 2009-09-16 | 2010-06-09 | 温州仁谦汽车油泵有限公司 | Liquid level sensor |
| CN103267555A (en) * | 2013-05-09 | 2013-08-28 | 唐山现代工控技术有限公司 | Pressure-type water level measuring method and pressure-type water level measuring device |
| CN103616058A (en) * | 2013-12-06 | 2014-03-05 | 安徽江淮汽车股份有限公司 | Sealed fuel quantity transducer |
| CN204142328U (en) * | 2014-10-08 | 2015-02-04 | 温州仁谦汽车油泵有限公司 | Anti-clamping stagnation fuel level sensor |
| CN204202704U (en) * | 2014-11-18 | 2015-03-11 | 江苏奔腾汽车科技有限公司 | Clamping fast assembling multiloop fuel level sensor |
| CN204228232U (en) * | 2014-10-27 | 2015-03-25 | 倪忠 | Automobile oil level sensor |
| CN204630638U (en) * | 2015-04-20 | 2015-09-09 | 重庆万力联兴实业(集团)有限公司 | Totally enclosed type fuel level sensor |
| CN205808514U (en) * | 2016-06-06 | 2016-12-14 | 广东工业大学 | Liquid level sensor |
-
2016
- 2016-06-06 CN CN201610397417.5A patent/CN106404124B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050583A (en) * | 1989-09-25 | 1991-04-10 | 环境第一公司 | Independently be installed in the anti-sewage grinder pump liquid level tank level control system that floods in the cylinder |
| JP2005308563A (en) * | 2004-04-22 | 2005-11-04 | Toyota Motor Corp | Detection device and vehicle equipped with detection device |
| CN201503298U (en) * | 2009-09-16 | 2010-06-09 | 温州仁谦汽车油泵有限公司 | Liquid level sensor |
| CN101660936A (en) * | 2009-09-28 | 2010-03-03 | 蒋勤舟 | Oil level sensing device |
| CN103267555A (en) * | 2013-05-09 | 2013-08-28 | 唐山现代工控技术有限公司 | Pressure-type water level measuring method and pressure-type water level measuring device |
| CN103616058A (en) * | 2013-12-06 | 2014-03-05 | 安徽江淮汽车股份有限公司 | Sealed fuel quantity transducer |
| CN204142328U (en) * | 2014-10-08 | 2015-02-04 | 温州仁谦汽车油泵有限公司 | Anti-clamping stagnation fuel level sensor |
| CN204228232U (en) * | 2014-10-27 | 2015-03-25 | 倪忠 | Automobile oil level sensor |
| CN204202704U (en) * | 2014-11-18 | 2015-03-11 | 江苏奔腾汽车科技有限公司 | Clamping fast assembling multiloop fuel level sensor |
| CN204630638U (en) * | 2015-04-20 | 2015-09-09 | 重庆万力联兴实业(集团)有限公司 | Totally enclosed type fuel level sensor |
| CN205808514U (en) * | 2016-06-06 | 2016-12-14 | 广东工业大学 | Liquid level sensor |
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|---|---|
| CN106404124B (en) | 2023-05-09 |
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