CN208937148U - A kind of liquid level sensor of fuel pump - Google Patents
A kind of liquid level sensor of fuel pump Download PDFInfo
- Publication number
- CN208937148U CN208937148U CN201821837576.3U CN201821837576U CN208937148U CN 208937148 U CN208937148 U CN 208937148U CN 201821837576 U CN201821837576 U CN 201821837576U CN 208937148 U CN208937148 U CN 208937148U
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- snap
- gauge
- reed
- conduction band
- liquid level
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Abstract
The utility model provides a kind of liquid level sensor of fuel pump, comprising: float and float bar assembly, the float float up and down, to drive float bar assembly to rotate, further includes: shell, resistor disc, the first reed and the second reed.The enclosure interior is arranged in resistor disc, and the front of resistor disc is equipped with the first contact conduction band, and the reverse side of resistor disc is equipped with the second contact conduction band.The fixing end of first reed is connect with the float bar assembly, and the sliding end of the first reed rides on the first contact conduction band, forms first resistor circuit.The fixing end of second reed is connect with the float bar assembly, and the sliding end of the second reed rides on the second contact conduction band, forms second resistance circuit.First reed and the second reed are arranged in eight words, and clamping forms the first resistor circuit with the second resistance circuit in parallel on the front and back sides of the resistor disc.The utility model can improve instrument display precision.
Description
Technical field
The utility model relates to Technology of Level Detection field more particularly to a kind of liquid level sensors of fuel pump.
Background technique
The effect of fuel pump is that fuel oil is transported in fuel feed pump and fuel pressure tune after being sucked out, pressurizeing in fuel tank
Certain fuel pressure is established in section device cooperation.Liquid level sensor on fuel pump has the function of measurement liquid level of fuel oil in fuel tank liquid level,
It is main to be slided in measurement plate by float band movable contact, achieve the purpose that measure liquid level.When oil liquid liquid level generates variation, combustion
The float bar assembly of the liquid level sensor of oil pump can generate rotation, this rotation will drive reed contact and slide on resistor disc, into
And it generates different resistance values and exports to instrument.But as accurately to show that using consumer, oil mass is proposed to instrument higher for automobile
Demand.Since the position that each instrument is shown has unique resistance value to correspond in oil pump sensor, if to mention
Rising instrument display precision just must provide more resistance measurements to instrument, and this requires the conduction band width of liquid level sensor and electricity
The corresponding relationship of resistance value is more accurate.It is certain in fuel tank inside upper surface and lower surface difference in height, float bar assembly radius of turn
In the case where certain, resistance measurement means conduction band width with regard to smaller.Conduction band width there are the limiting value that technique is realized, when
The resistance measurement of demand still cannot be provided when minimum, then cannot achieve instrument and accurately show.
Utility model content
The utility model provides a kind of liquid level sensor of fuel pump, and the liquid level sensor for solving existing fuel pump can not mention
The problem of for finer resistance value to show oil mass variation, instrument display precision can be improved.
In order to achieve the above object, the utility model the following technical schemes are provided:
A kind of liquid level sensor of fuel pump, comprising: float and float bar assembly, the float float up and down, with driving
Float bar assembly rotation, further includes: shell, resistor disc, the first reed and the second reed；
The enclosure interior is arranged in the resistor disc, and the front of the resistor disc is equipped with the first contact conduction band, the electricity
The reverse side for hindering piece is equipped with the second contact conduction band；
The fixing end of first reed is connect with the float bar assembly, and the sliding end of first reed rides over institute
It states on the first contact conduction band, forms first resistor circuit；
The fixing end of second reed is connect with the float bar assembly, and the sliding end of second reed rides over institute
It states on the second contact conduction band, forms second resistance circuit；
First reed and second reed are arranged in eight words, and clamping makes on the front and back sides of the resistor disc
The first resistor circuit forms in parallel with the second resistance circuit；
When float floats up and down, the float bar assembly respectively drives first reed and second reed in institute
It states and is swung on resistor disc, the first resistor circuit and the second resistance circuit is made to generate corresponding parallel resistance, to increase
The corresponding precision of the show value of instrument and resistance value.
Preferably, further includes: fixed resistance；
One end and described second that one end of the fixed resistance passes through conducting wire and the first contact conduction band respectively contacts
One end of conduction band is connected, and the other end of the fixed resistance is connected with the electric connecting terminal of the float bar assembly；
Respective value of the resistance value that the fixed resistance is formed after connecting with the parallel resistance as instrument show value.
Preferably, the shell includes: the first snap-gauge, the second snap-gauge, third snap-gauge and bottom plate；
First snap-gauge is vertically set on one end of second snap-gauge, and the third snap-gauge is vertically set on described
The other end of two snap-gauges；
First snap-gauge, second snap-gauge and the third snap-gauge are vertically set on the bottom plate, and are formed
Box like structure；
The resistor disc is connected to the clamping space that first snap-gauge, second snap-gauge and the third snap-gauge are formed
It is interior, and it is parallel to the bottom plate.
Preferably, first snap-gauge and the third snap-gauge are equipped with wire casing, and second snap-gauge is equipped with through-hole；
The conducting wire connecting with the first contact conduction band and the second contact conduction band is arranged through the through-hole in institute
It states in wire casing.
Preferably, the shell further includes support column, and the support column is used to support the resistance perpendicular to the bottom plate
Piece.
Preferably, first snap-gauge, second snap-gauge and the third snap-gauge are equipped with card slot, and the resistor disc is logical
The card slot is crossed to be clamped with first snap-gauge, second snap-gauge and the third snap-gauge.
Preferably, first snap-gauge, second snap-gauge and the third snap-gauge are equipped with fixed card buckle, the resistance
Piece is clamped by the fixed card buckle and first snap-gauge, second snap-gauge and the third snap-gauge.
Preferably, circular contact there are two being set along the fixed extreme direction on the sliding end.
Preferably, the resistor disc is ceramic resistor piece.
Preferably, the first contact conduction band and the second contact conduction band are sector structure.
The utility model provides a kind of liquid level sensor of fuel pump, is connect by the way that first is arranged on the front and back sides of resistor disc
Conduction band and the second contact conduction band are touched, and correspondence is connect with the first reed and the second reed, to form first resistor circuit and second
Resistance loop, and then corresponding parallel resistance is generated by the first resistor circuit and the second resistance circuit, to increase
The corresponding precision of the show value of instrument and resistance value.The liquid level sensor for solving existing fuel pump can not provide finer resistance value
The problem of to show oil mass variation, instrument display precision can be improved.
Detailed description of the invention
In order to illustrate more clearly of specific embodiments of the present invention, attached drawing needed in the embodiment will be made below
Simply introduce.
Fig. 1: being the main view of the internal structure of liquid level sensor provided by the utility model；
Fig. 2: being the top view of the internal structure of liquid level sensor provided by the utility model；
Fig. 3: being the bottom view of the internal structure of liquid level sensor provided by the utility model；
Fig. 4: being the schematic diagram of the internal structure of liquid level sensor provided by the utility model；
Fig. 5: being the cross-sectional view of Fig. 4.
Appended drawing reference
3 float bar assemblies
4 first reeds
41 circular contacts
5 second reeds
51 circular contacts
6 resistor discs
61 first contact conduction bands
62 second contact conduction bands
7 fixed resistances
8 conducting wires
9 shells
91 first snap-gauges
92 second snap-gauges
93 third snap-gauges
94 fixed card buckles
95 through-holes
96 wire casings
97 support columns
Specific embodiment
In order to make those skilled in the art more fully understand the scheme of the utility model embodiment, with reference to the accompanying drawing and
Embodiment is described in further detail the embodiments of the present invention.
There is a problem of that show value is not high because of the precision of resistance value for the liquid level sensor of current fuel pump.This is practical new
Type provides a kind of liquid level sensor of fuel pump, by the way that the first contact conduction band and the second contact are arranged on the front and back sides of resistor disc
Conduction band, and correspondence is connect with the first reed and the second reed, to form first resistor circuit and second resistance circuit, and then is passed through
The first resistor circuit and the second resistance circuit generate corresponding parallel resistance, to increase the show value and resistance of instrument
The correspondence precision of value.The liquid level sensor for solving existing fuel pump can not provide finer resistance value to show asking for oil mass variation
Topic, can improve instrument display precision.
As shown in Figure 1 and Figure 5, a kind of liquid level sensor of fuel pump, comprising: float (not shown) and float lever group
Part 3, the float float up and down, to drive float bar assembly 3 to rotate, further includes: shell 9, resistor disc 6, the first reed 4 and the
Two reeds 5.The resistor disc 6 is arranged inside the shell 9, and the front of the resistor disc 6 is equipped with the first contact conduction band 61, institute
The reverse side for stating resistor disc 6 is equipped with the second contact conduction band 62.The fixing end of first reed 4 and the float bar assembly 3 connect
It connects, the sliding end of first reed 4 rides on the first contact conduction band 61, forms first resistor circuit.Described second
The fixing end of reed 5 is connect with the float bar assembly 3, and the sliding end of second reed 5 rides over second contact and leads
On band 62, second resistance circuit is formed.First reed 4 is arranged with second reed 5 in eight words, and clamping is in the electricity
On the front and back sides for hindering piece 6, form the first resistor circuit with the second resistance circuit in parallel.It floats up and down in float
When, the float bar assembly 3 respectively drives first reed 4 and second reed 5 is swung on the resistor disc 6, makes
The first resistor circuit and the second resistance circuit generate corresponding parallel resistance, to increase the show value and resistance of instrument
The correspondence precision of value.
Specifically, as shown in Figures 2 and 3, there are printed resistor in the front and back sides of resistor disc in sensor, and contact conduction band and exist
In cross-distribution, there are two reeds for sensor, and the first reed and the setting of the second reed are in toed-in shape, the contact point on reed
Contact conduction band not in front and back sides contacts.When the first reed and the first contact conduction band contact, the electricity of first resistor circuit generation
Resistance value is Ra.When the second reed and the second contact conduction band contact, the resistance value that second resistance circuit generates is Rb, then electricity in parallel
Resistance is Ra*Rb/ (Ra+Rb).The resistance measurement that fuel pump sensor can by this way provided is conventional fuel oil pump sensor
Twice, avoid instrument from accurately showing the problem of corresponding resistance measurement deficiency, instrument display precision can be improved.
The sensor further include: fixed resistance 7, one end of the fixed resistance 7 pass through conducting wire 8 respectively and connect with described first
The one end for touching conduction band 61 is connected with one end of the second contact conduction band 62, the other end and the float of the fixed resistance 7
The electric connecting terminal of bar assembly 3 is connected.The resistance value that the fixed resistance 7 is formed after connecting with the parallel resistance is aobvious as instrument
The respective value of indicating value.
Specifically, the resistance value of fuel pump sensor is equal to the sum of fixed resistance and parallel resistance, as instrument show value
Respective value.
As shown in figure 4, the shell 9 includes: the first snap-gauge 91, the second snap-gauge 92, third snap-gauge 93 and bottom plate；Described
One snap-gauge 91 is vertically set on one end of second snap-gauge 92, and the third snap-gauge 93 is vertically set on second snap-gauge 92
The other end.First snap-gauge 91, second snap-gauge 92 and the third snap-gauge 93 are vertically set on the bottom plate,
And form box like structure.The resistor disc 6 is connected to first snap-gauge 91, second snap-gauge 92 and the third snap-gauge 93
In the clamping space of formation, and it is parallel to the bottom plate.
As shown in figure 5, first snap-gauge 91 and the third snap-gauge 93 are equipped with wire casing 96, set on second snap-gauge
There is through-hole 95.The conducting wire connecting with the first contact conduction band 61 and the second contact conduction band 62 runs through the through-hole 95, and
It is arranged in the wire casing 96.
As shown in figure 5, the shell 9 further includes support column 97, the support column 97 is used to support perpendicular to the bottom plate
The resistor disc 6.In practical applications, support column is settable multiple.
In one embodiment, on first snap-gauge 91, second snap-gauge 92 and the third snap-gauge 93 be equipped with card slot
(not shown), the resistor disc 6 pass through the card slot and first snap-gauge 91, second snap-gauge 92 and the third
Snap-gauge 93 is clamped.
In another embodiment, as shown in figure 4, first snap-gauge 91, second snap-gauge 92 and the third snap-gauge
93 are equipped with fixed card buckle 94, and the resistor disc 6 passes through the fixed card buckle 94 and first snap-gauge 91, second snap-gauge
92 and the third snap-gauge 93 be clamped.
As shown in Figure 1, setting along the fixed extreme direction on the sliding end, there are two circular contacts, such as in the first reed
On circular contact 41 and the second reed on circular contact 51.
In practical applications, traditional fuel pump sensor is using the single contact welded, in wear-resistant and oil resistant corrosion side
Face is not good enough, especially in the various oil containing additive impurity.Contact is easy to be corroded in fuel oil, causes contact not
Good, the signal stabilization of output is poor, and automobile oil gauge instruction is inaccurate.Therefore, two circular contacts are set in sliding end, can guarantee
The electric conductivity of reed and contact conduction band contact, the resistance value for generating it are more accurate.
Further, the resistor disc is ceramic resistor piece.
As shown in Figure 4 and Figure 5, the first contact conduction band 61 and the second contact conduction band 62 are sector structure.
As it can be seen that the utility model provides a kind of liquid level sensor of fuel pump, by being arranged on the front and back sides of resistor disc
First contact conduction band and the second contact conduction band, and correspondence is connect with the first reed and the second reed, to form first resistor circuit
With second resistance circuit, and then corresponding parallel resistance is generated by the first resistor circuit and the second resistance circuit,
To increase the show value of instrument and the corresponding precision of resistance value.The liquid level sensor for solving existing fuel pump can not provide more finely
Resistance value with show oil mass variation the problem of, instrument display precision can be improved.
The structure, features, and effects of the present invention is described in detail according to diagrammatically shown embodiment above, with
Upper described is only the preferred embodiment of the utility model, but the present invention does not limit the scope of implementation as shown in the drawings, it is all according to
Change or equivalent example modified to equivalent change made by conception according to the utility model, still without departing from specification and figure
When showing covered spirit, it should be within the protection scope of the present utility model.
Claims (10)
1. a kind of liquid level sensor of fuel pump, comprising: float and float bar assembly, the float float up and down, floating to drive
The rotation of sub bar component, which is characterized in that further include: shell, resistor disc, the first reed and the second reed；
The enclosure interior is arranged in the resistor disc, and the front of the resistor disc is equipped with the first contact conduction band, the resistor disc
Reverse side be equipped with second contact conduction band；
The fixing end of first reed is connect with the float bar assembly, and the sliding end of first reed rides over described
On one contact conduction band, first resistor circuit is formed；
The fixing end of second reed is connect with the float bar assembly, and the sliding end of second reed rides over described
On two contact conduction bands, second resistance circuit is formed；
First reed and second reed are arranged in eight words, and clamping makes described on the front and back sides of the resistor disc
First resistor circuit forms in parallel with the second resistance circuit；
When float floats up and down, the float bar assembly respectively drives first reed and second reed in the electricity
It hinders on piece to swing, so that the first resistor circuit and the second resistance circuit is generated corresponding parallel resistance, to increase instrument
Show value and the corresponding precision of resistance value.
2. the liquid level sensor of fuel pump according to claim 1, which is characterized in that further include: fixed resistance；
One end of the fixed resistance passes through conducting wire respectively and one end and described second of the first contact conduction band contacts conduction band
One end be connected, the other end of the fixed resistance is connected with the electric connecting terminal of the float bar assembly；
Respective value of the resistance value that the fixed resistance is formed after connecting with the parallel resistance as instrument show value.
3. the liquid level sensor of fuel pump according to claim 1, which is characterized in that the shell include: the first snap-gauge,
Second snap-gauge, third snap-gauge and bottom plate；
First snap-gauge is vertically set on one end of second snap-gauge, and the third snap-gauge is vertically set on second card
The other end of plate；
First snap-gauge, second snap-gauge and the third snap-gauge are vertically set on the bottom plate, and are formed box-like
Structure；
The resistor disc is connected in the clamping space that first snap-gauge, second snap-gauge and the third snap-gauge are formed,
And it is parallel to the bottom plate.
4. the liquid level sensor of fuel pump according to claim 3, which is characterized in that first snap-gauge and the third
Snap-gauge is equipped with wire casing, and second snap-gauge is equipped with through-hole；
The conducting wire connecting with the first contact conduction band and the second contact conduction band is arranged through the through-hole in the line
In slot.
5. the liquid level sensor of fuel pump according to claim 3, which is characterized in that the shell further includes support column,
The support column is used to support the resistor disc perpendicular to the bottom plate.
6. the liquid level sensor of fuel pump according to claim 3, which is characterized in that first snap-gauge, described second
Snap-gauge and the third snap-gauge are equipped with card slot, and the resistor disc passes through the card slot and first snap-gauge, second card
Plate and the third snap-gauge are clamped.
7. the liquid level sensor of fuel pump according to claim 3, which is characterized in that first snap-gauge, described second
Snap-gauge and the third snap-gauge are equipped with fixed card buckle, and the resistor disc passes through the fixed card buckle and first snap-gauge, institute
It states the second snap-gauge and the third snap-gauge is clamped.
8. the liquid level sensor of fuel pump according to claim 1, which is characterized in that along the fixation on the sliding end
Circular contact there are two being set on extreme direction.
9. the liquid level sensor of fuel pump according to claim 1, which is characterized in that the resistor disc is ceramic resistor
Piece.
10. the liquid level sensor of fuel pump according to claim 1, which is characterized in that the first contact conduction band and institute
Stating the second contact conduction band is sector structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821837576.3U CN208937148U (en) | 2018-11-08 | 2018-11-08 | A kind of liquid level sensor of fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821837576.3U CN208937148U (en) | 2018-11-08 | 2018-11-08 | A kind of liquid level sensor of fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208937148U true CN208937148U (en) | 2019-06-04 |
Family
ID=66727261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821837576.3U Active CN208937148U (en) | 2018-11-08 | 2018-11-08 | A kind of liquid level sensor of fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208937148U (en) |
-
2018
- 2018-11-08 CN CN201821837576.3U patent/CN208937148U/en active Active
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