CN205192576U - Novel engine oil level sensor structure - Google Patents
Novel engine oil level sensor structure Download PDFInfo
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- CN205192576U CN205192576U CN201520741548.1U CN201520741548U CN205192576U CN 205192576 U CN205192576 U CN 205192576U CN 201520741548 U CN201520741548 U CN 201520741548U CN 205192576 U CN205192576 U CN 205192576U
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- contact
- reed
- ceramic resistor
- level sensor
- oil
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Abstract
The utility model discloses a novel engine oil level sensor structure, include: be provided with the skeleton of round pin axle, through round pin axle articulate in swing arm on the skeleton, the shaping in reed in the swing arm, set up through precision resistor welded fastening contact on the reed, the setting is in on the skeleton and with the ceramic resistor piece that the contact contacted, and respectively with input lead and output lead that ceramic resistor piece and reed are connected, wherein, the lower part of reed is provided with one at least the contact, the contact with the part that the ceramic resistor piece contacted chooses for use nickel billon or palau to make. The utility model discloses can the effectual accuracy that improves output resistance value signal, just contact change easy maintenance.
Description
Technical field:
The utility model relates to sensor technical field, relates to a kind of fuel level sensor structure in particular.
Background technology:
Fuel level sensor is the change causing electric capacity between sensor housing and induction electrode after utilizing oil to enter fuel tank, and is the component that curent change detects oil position or height in container by this change transitions, is the vitals detecting automotive oil tank oil level.Fuel level sensor is connected with automobile power system, oil level gage, measures the oil mass in fuel tank, and oil level situation is shown by oil level gage, checks for people.
Traditional fuel level sensor is by float, float lever, conduction band, the parts compositions such as sliding contact, wherein conduction band is exactly a slide rheostat, the size of its resistance is controlled by the position of float, along with the change of Fuel Oil Remaining in fuel tank, float can fluctuate thereupon, the float lever be connected with described float just can drive sliding contact to slide, the movement of described sliding contact can drive again the change of conduction band resistance, when on-load voltage is fixing, the output current of sensor also just there occurs change, electric current to be reflected on automobile oil level table and to be converted into Fuel Oil Remaining according to certain ratio.The sliding contact of traditional oils level sensor and conduction band rubbing contact, the major defect of sliding contact described in prior art is: serviceable life is short, and mean lifetime is 1 ~ 2 year.Trace it to its cause mainly owing to containing the compositions such as a large amount of sulphur, methyl alcohol, ethanol in current domestic oil product, fuel level sensor is under the long-term impact of these oil products, the surface of sliding contact easily produces layer of metal sulphur silver oxide film, described oxide film can increase the contact resistance between sliding contact and conduction band, thus make the resistance value signal of sensor output error, cause oil level gage to show inaccurate; In addition, sliding contact generally direct welding or be molded on reed, changes very inconvenient, and is unfavorable for maintenance, adds the maintenance cost of automobile simultaneously.
Summary of the invention:
The purpose of this utility model is exactly the deficiency for prior art, and provides a kind of oil-level sensor structure, and it effectively can improve the degree of accuracy of output resistance value signal, and contact repair and replacement are convenient.
Technology solution of the present utility model is as follows: a kind of oil-level sensor structure, comprising: the skeleton being provided with bearing pin; By the swing arm of described hinge on described skeleton; Take shape in the reed in described swing arm; The contact be arranged on described reed is welded and fixed by precision resistance; Be arranged on the ceramic resistor sheet contacted on described skeleton and with described contact; And the input lead be connected with described ceramic resistor sheet and reed respectively and output lead; Wherein, the bottom of described reed is at least provided with a described contact, and the part that described contact contacts with described ceramic resistor sheet selects nickel billon or polarium to make.
Preferred as technique scheme, described bearing pin is positioned at the central authorities on described skeleton top.
Preferred as technique scheme, described reed is taken shape in described swing arm by injection molding manner.
Preferred as technique scheme, described reed selects metal material to make.
Preferred as technique scheme, described output lead is connected with described reed by spring wire, and wherein, one end of described spring wire is connected with described output lead, and the other end is welded on described reed; One end of described input lead is directly welded on described ceramic resistor sheet.
Preferred as technique scheme, the bottom of described skeleton is also provided with substrate, and described substrate is positioned at immediately below described ceramic resistor sheet.
Preferred as technique scheme, the mode adopting face to contact between described contact with described ceramic resistor sheet connects.
Preferred as technique scheme, the end face the selection of material that described contact contacts with described ceramic resistor sheet is noble metal Au Ni5.
The beneficial effects of the utility model are:
1) end face that contact contacts with ceramic resistor sheet selects noble metal Au Ni5 material to make, the corrosion resistance of contact is strong, can meet in the gasoline containing 130PPM sulphur, continuous firing more than 2,000,000 times, the contact end face of contact also can not produce oxide film, thus effectively can ensure the precision of output resistance, makes automobile oil level table accurately show oil level, and effectively extend the serviceable life of contact, reduce maintenance frequency;
2) described contact is welded and fixed by precision resistance and is arranged on reed, and solder joint is little, and solder joint controllability is strong, and face of weld is level and smooth, long service life, and repair and replacement are convenient, save maintenance cost.
Accompanying drawing illustrates:
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein:
Fig. 1 is perspective view of the present utility model;
Fig. 2 is the structural representation of main apparent direction of the present utility model;
Fig. 3 is the cross-sectional view in A-A direction in Fig. 2;
Fig. 4 is the position relationship schematic diagram between contact of the present utility model and ceramic resistor sheet.
In figure, 10, skeleton; 11, bearing pin; 20, swing arm; 30, reed; 40, ceramic resistor sheet; 50, contact; 60, spring wire; 70, substrate.
Embodiment:
Embodiment: by particular specific embodiment, embodiment of the present utility model is described below, those skilled in the art can understand other advantages of the present utility model and effect easily by content disclosed in the present specification." top ", " below " mentioned in the present embodiment is consistent with the direction of accompanying drawing top itself, below, only understand for ease of describing, and be not used to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under changing technology contents without essence, also when being considered as the enforceable category of the utility model.
See shown in Fig. 1 to Fig. 3, a kind of oil-level sensor structure, comprising: the skeleton 10 being provided with bearing pin 11; The swing arm 20 on described skeleton 10 is articulated with by described bearing pin 11; Take shape in the reed 30 in described swing arm 20; The contact 50 be arranged on described reed 30 is welded and fixed by precision resistance; Be arranged on the ceramic resistor sheet 40 contacted on described skeleton 10 and with described contact 50; And the input lead be connected with described ceramic resistor sheet 40 and described metal spring leaf 30 respectively and output lead; Wherein, the bottom of described reed 30 is at least provided with a described contact 50, the part that described contact 50 contacts with described ceramic resistor sheet 40 selects nickel billon or polarium to make, in the present embodiment, as shown in Figure 4, the bottom of described reed 30 is provided with three described contacts 50, and the quantity of described contact 50 is determined according to actual service condition.The bottom of described skeleton 10 is also provided with substrate 70, and described substrate 70 is positioned at immediately below described ceramic resistor sheet 40.Described ceramic resistor sheet 40 is provided with conduction band, and described conduction band is banded ringwise, and described contact 50 is pressed on described conduction band, and moves on described conduction band along with the change of oil mass in automotive oil tank.
In the present embodiment, described bearing pin 11 is positioned at the central authorities on described skeleton 10 top, described reed 30 selects metal material to make, and takes shape in described swing arm 20 by injection molding manner, as shown in Figure 4, the mode adopting face to contact between described contact 50 with described ceramic resistor sheet 40 connects, one end of described contact 50 is fixed on described reed 30 by the mode that precision resistance welds, the other end contacts with the conduction band on described ceramic resistor sheet 40, along with the change of oil mass in fuel tank, described swing arm 20 can swing thereupon, the described reed 30 be connected with described swing arm 20 just can drive described contact 50 to swing on described ceramic resistor sheet 40, and the swing of described contact 50 can cause the change of described ceramic resistor sheet 40 resistance, when on-load voltage is fixing, the output current of sensor also just there occurs change, the connected mode of 50, described contact contact effectively increases the contact area between described contact 50 and described ceramic resistor sheet 40, ensure that the degree of accuracy of output resistance value signal to a certain extent, described output lead is connected with described reed 30 by spring wire 60, and wherein, one end of described spring wire 60 is connected with described output lead, and the other end is welded on described reed 30, and solder joint is a point, one end of described input lead is directly welded on described ceramic resistor sheet 40, and solder joint is b point, concrete, and one end of described input lead is welded on the conduction band of described ceramic resistor sheet 40.
The end face the selection of material that described contact 50 contacts with described ceramic resistor sheet 40 is noble metal Au Ni5, the object of such setting reduces the use amount of noble metal Au Ni5, to ensure that while reducing costs surface, described contact 50 can not produce oxide film, guarantee to export high-precision resistance value; In addition, described contact 50 also can entirety all adopt noble metal Au Ni5 to make.
The corrosion resistance of contact 50 described in the utility model is strong, can meet in the gasoline containing 130PPM sulphur, continuous firing more than 2,000,000 times, the contact end face of described contact 50 also can not produce oxide film, thus effectively can ensure the precision of output resistance, make automobile oil level table accurately show oil level, and effectively extend the serviceable life of contact, reduce maintenance frequency; Described contact 50 is welded and fixed by precision resistance and is arranged on described reed 30, and solder joint is little, and solder joint controllability is strong, and face of weld is level and smooth, long service life, and repair and replacement are convenient, save maintenance cost.
Described embodiment in order to illustrative the utility model, but not for limiting the utility model.Any those skilled in the art all without prejudice under spirit of the present utility model and category, can modify to described embodiment, therefore rights protection scope of the present utility model, should listed by claim of the present utility model.
Claims (7)
1. an oil-level sensor structure, is characterized in that, comprising:
Be provided with the skeleton (10) of bearing pin (11);
The swing arm (20) on described skeleton (10) is articulated with by described bearing pin (11);
Take shape in the reed (30) in described swing arm (20);
The contact (50) be arranged on described reed (30) is welded and fixed by precision resistance;
Be arranged on described skeleton (10) to go up and the ceramic resistor sheet (40) contacted with described contact (50); And
The input lead be connected with described ceramic resistor sheet (40) and reed (30) respectively and output lead;
Wherein, the bottom of described reed (30) is at least provided with a described contact (50), and the part that described contact (50) contact with described ceramic resistor sheet (40) selects nickel billon or polarium to make.
2. oil-level sensor structure according to claim 1, is characterized in that: described bearing pin (11) is positioned at the central authorities on described skeleton (10) top.
3. oil-level sensor structure according to claim 1, is characterized in that: described reed (30) is taken shape in described swing arm (20) by injection molding manner.
4. oil-level sensor structure according to claim 1, it is characterized in that: described output lead is connected with described reed (30) by spring wire (60), wherein, one end of described spring wire (60) is connected with described output lead, and the other end is welded on described reed (30); One end of described input lead is directly welded on described ceramic resistor sheet (40).
5. oil-level sensor structure according to claim 1, it is characterized in that: the bottom of described skeleton (10) is also provided with substrate (70), described substrate (70) is positioned at immediately below described ceramic resistor sheet (40).
6. oil-level sensor structure according to claim 1, is characterized in that: the mode adopting face to contact between described contact (50) with described ceramic resistor sheet (40) connects.
7. oil-level sensor structure according to claim 6, is characterized in that: the end face the selection of material that described contact (50) contact with described ceramic resistor sheet (40) is noble metal Au Ni5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520741548.1U CN205192576U (en) | 2015-09-23 | 2015-09-23 | Novel engine oil level sensor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520741548.1U CN205192576U (en) | 2015-09-23 | 2015-09-23 | Novel engine oil level sensor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205192576U true CN205192576U (en) | 2016-04-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520741548.1U Active CN205192576U (en) | 2015-09-23 | 2015-09-23 | Novel engine oil level sensor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205192576U (en) |
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2015
- 2015-09-23 CN CN201520741548.1U patent/CN205192576U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |