CN103616058A - Sealed fuel quantity transducer - Google Patents
Sealed fuel quantity transducer Download PDFInfo
- Publication number
- CN103616058A CN103616058A CN201310654643.3A CN201310654643A CN103616058A CN 103616058 A CN103616058 A CN 103616058A CN 201310654643 A CN201310654643 A CN 201310654643A CN 103616058 A CN103616058 A CN 103616058A
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- connecting portion
- quantity transducer
- enclosure
- thick
- film resistor
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Abstract
The invention discloses a sealed fuel quantity transducer. The sealed fuel quantity transducer comprises a floater rod, a thick-film resistor sheet, a support and an electric brush arranged on the support, wherein a floater is fixedly installed at one end of the floater rod, and the other end of the floater rod is of a bent structure which is bent in a right angle. The fuel quantity transducer further comprises a front cover, a rear cover and a connecting part, wherein the thick-film resistor sheet is fixedly installed on the front cover, the rear cover is connected with the front cover, and the connecting part is used for driving the support to swing along with the rotation of the floater rod. Meanwhile, in the swinging process of the support, the electric brush is in contact with the thick-film resistor sheet all the time. The import elements of the sealed fuel quantity transducer, namely the electric brush and the thick-film resistor sheet, do not make direct contact with fuel, as a result, the situation that the surfaces of the import elements are corroded by the fuel or impurities are attached to the surfaces of the import elements is avoided, the service life of the fuel quantity transducer is prolonged, and accuracy of data detected by the fuel quantity transducer is guaranteed at the same time.
Description
Technical field
The present invention relates to automobile technical field, relate in particular to a kind of enclosure-type fuel-quantity transducer.
Background technology
Fig. 1 a shows the structural representation of automobile transfer pump in prior art, and Fig. 1 b shows the Facad structure schematic diagram of the local I shown in Fig. 1, and Fig. 1 c shows the structure schematic diagram of the local I shown in Fig. 1.With reference to Fig. 1 a to Fig. 1 c, the principle of work that fuel-quantity transducer is described is: one end of float lever 2 arranges float 21, float 21 stretches in fuel tank, float 21 fluctuates along with the variation of oil mass in fuel tank, thereby drive float lever 2 to rotate, the brush 9 that is simultaneously connected to float lever 2 other ends swings back and forth, and brush 9 slides in the process swinging on thick-film resistor sheet 10, cause the resistance change of place in circuit, with this, reflect the variation of oil mass in fuel tank.
The defect of above-mentioned fuel-quantity transducer is: this kind of fuel-quantity transducer do not have safeguard measure, brush, and some critical elements such as thick-film resistor sheet all directly contact with fuel oil, greatly reduce the serviceable life of fuel-quantity transducer.In addition, in use, these critical elements can be subject to fuel oil corrosion and surface attachment impurity, cause the resistance value of place in circuit inaccurate, and then cause the oil mass data of detection inaccurate, had a strong impact on the serviceability of fuel-quantity transducer and the validity of subsequent control.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, a kind of enclosure-type fuel-quantity transducer is provided.
Technical scheme of the present invention is:
An enclosure-type fuel-quantity transducer, comprises float lever, thick-film resistor sheet, support and is arranged on the brush on described support, one end of described float lever is fixed with float, and the other end is the bending structure at right angles bending; Described fuel-quantity transducer also comprises:
Be fixed with the protecgulum of described thick-film resistor sheet;
The bonnet being connected with described protecgulum; And
For the connecting portion that drives described support to swing with the rotation of float lever; And in the process swinging at described support, described brush contacts with described thick-film resistor sheet all the time.
Preferably, described connecting portion comprises the first connecting portion and the second connecting portion that is convexly set in the first end face of described the first connecting portion;
On described protecgulum, offer through hole, the free end of described the second connecting portion stretches in described bonnet inwall after running through described through hole; On the outer wall of described the second connecting portion, be arranged with grommet type seals, on the outer wall of described grommet type seals, offer annular groove, the inwall of described through hole stretches in described annular groove and is against on the bottom land of described annular groove; The first end face of described the first connecting portion is against on the end face of described annular groove;
Described bending structure is fixedly connected with described connecting portion;
The jacket casing that described support has by it is located on the outer wall of described the second connecting portion, the outer wall interference fit of the inwall of described sleeve and described connecting portion.
Preferably, the first paragraph that is positioned at end of described bending structure runs through described the first connecting portion and the second connecting portion in turn;
The second segment of described bending structure is embedded in second end face relative with described the first end face of described the first connecting portion, and is fixed on described the first connecting portion by the positive stop strip being arranged on described the second end face.
Preferably, described fuel-quantity transducer also comprises the limited location snap ring that the annular groove offered on the outer wall with described the second connecting portion matches, and described limited location snap ring is against described sleeve section on a side end face of described bonnet.
Preferably, described grommet type seals is made by nitrile rubber or epichlorohydrin rubber.
Preferably, described thick-film resistor sheet is welded on described protecgulum.
Preferably, be also provided with two binding posts on the outer wall of described protecgulum, the wire of drawing from two terminals of described thick-film resistor sheet is electrically connected to described two binding posts respectively.
Preferably, the junction of described protecgulum and bonnet adopts sealant sealing.
Preferably, described protecgulum and bonnet are made by acetal plastic.
Beneficial effect of the present invention is, the critical elements of described enclosure-type fuel-quantity transducer: brush does not directly contact with fuel oil with thick-film resistor sheet, avoided the surface of critical elements by fuel oil, to be corroded or adhere to the situation of impurity, extended the serviceable life of fuel-quantity transducer simultaneously, guaranteed that fuel-quantity transducer detects the accuracy of data.
Accompanying drawing explanation
Fig. 1 a shows the structural representation of automobile transfer pump in prior art;
Fig. 1 b shows the Facad structure schematic diagram of the local I shown in Fig. 1;
Fig. 1 c shows the structure schematic diagram of the local I shown in Fig. 1;
Fig. 2 shows the structural representation of the automobile rear pump that enclosure-type fuel-quantity transducer of the present invention is installed;
Fig. 3 shows the external structure schematic diagram of enclosure-type fuel-quantity transducer of the present invention;
Fig. 4 shows inside (in the cavity that protecgulum and the bonnet surround) structural representation of enclosure-type fuel-quantity transducer of the present invention;
Fig. 5 shows the diagrammatic cross-section of enclosure-type fuel-quantity transducer of the present invention;
Fig. 6 shows the structural representation of the connecting portion shown in Fig. 5;
Fig. 7 shows the structural representation of the limited location snap ring shown in Fig. 5;
Fig. 8 shows the structural representation of the support that is provided with thick-film resistor sheet;
Fig. 9 shows the structural representation of the grommet type seals shown in Fig. 3 and Fig. 5.
Description of reference numerals
1 protecgulum 4 grommet type sealss
2 float lever 41 annular grooves
21 float 5 bonnets
3 connecting portion 6 binding posts
31 first connecting portion 7 supports
311 stopper slot 71 sleeves
312 positive stop strip 8 limited location snap rings
32 second connecting portion 9 brushes
321 annular groove 10 thick-film resistor sheets
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
With reference to Fig. 2 to Fig. 5, described enclosure-type fuel-quantity transducer comprises float lever 2, thick-film resistor sheet 10, support 7 and brush 9, wherein said brush 9 is fixed on support 7, one end of described float lever 2 is fixed with float 21, float 21 stretches in fuel tank and fluctuates along with the variation of oil mass in fuel tank, the other end of float lever 2 is the bending structure at right angles bending, and described bending structure comprises first paragraph and second segment, and described first paragraph is positioned at end.
Especially, described fuel-quantity transducer also comprises protecgulum 1 connected to one another and bonnet 5, described protecgulum 1 and bonnet 5 are made by acetal plastic (POM) in the present embodiment, protecgulum 1 and bonnet 5 are for being fastened and connected, and adopt sealant sealing in both junctions, described thick-film resistor sheet 10, support 7 and brush 9 are all laid in the cavity being surrounded by described protecgulum 1 and bonnet 5, and wherein, described thick-film resistor sheet 10 preferably adopts the mode of welding to be fixed on described protecgulum 1.Described fuel-quantity transducer also comprises connecting portion 3, and connecting portion 3 is for driving described support 7 to swing back and forth with the rotation of float lever 2; And in the process swinging at described support 7, described brush 9 contacts with described thick-film resistor sheet 10 all the time, to change the resistance of thick-film resistor sheet 10 places in circuit.
Below in conjunction with Fig. 5, Fig. 6 and Fig. 9, describe the structure of above-mentioned connecting portion 3 and the matching relationship of connecting portion 3 and other parts in detail: described connecting portion 3 comprises the first connecting portion 31 and the second connecting portion 32, and wherein said the second connecting portion 32 is convexly set on the first end face of described the first connecting portion 31.
On described protecgulum 1, offer through hole, the free end of described the second connecting portion 32 stretches in the inwall of described bonnet 5 after running through described through hole, is rotatably connected with described bonnet 5 inwalls; On the outer wall of described the second connecting portion 32, be arranged with grommet type seals 4, described grommet type seals 4 is preferably made by nitrile rubber (NBR) or epichlorohydrin rubber (ECO), on the outer wall of described grommet type seals 4, offer annular groove 41, the inwall of described through hole stretches in described annular groove 41 and is against on the bottom land of described annular groove 41, be that the inwall of through hole and the bottom land of annular groove 41 have certain decrement, thereby by described grommet type seals 4, the position relationship that described connecting portion 3 can be relative with bonnet 5 maintenances with described protecgulum 1.The first end face of described the first connecting portion 31 is against on the end face of described annular groove 41, similarly also has certain decrement.
Described bending structure is fixedly connected with described connecting portion 3, and particularly, the first paragraph of described bending structure runs through described the first connecting portion 31 and the second connecting portion 32 in turn; The second segment of described bending structure is embedded in second end face relative with described the first end face of described the first connecting portion 31 (also can offer a stopper slot 311 matching with described second segment in advance on described the second end face, described second segment is fallen in stopper slot 311), and be fixed on described the first connecting portion 31 by the positive stop strip 312 being arranged on described the second end face, thereby in the process that described float lever 2 rotates, can drive connecting portion 3 synchronously to rotate.
In addition, the sleeve 71 that described support 7 has by it is set on the outer wall of described the second connecting portion 32, the outer wall interference fit of the inwall of described sleeve 71 and described connecting portion 3, thereby in the process that described connecting portion 3 rotates, described support 7 and be fixedly mounted with brush 9 thereon and take the axis of described the second connecting portion 32 and swing back and forth as axle.
Especially, on the outer wall of described the second connecting portion 32, offer annular groove 321, described fuel-quantity transducer also comprises the limited location snap ring 8 matching with described annular groove 321, the structure of limited location snap ring 8 as shown in Figure 8, described limited location snap ring 8 on the one hand by with being fixed on the outer wall of described the second connecting portion 32 of described annular groove 321, it protrudes a side side of the outer ring portion of described annular groove 321 on the other hand, be against described sleeve 71 on a side end face of described bonnet 5, play spacing effect, the sleeve 71 that prevents described support 7 slides on the outer wall of the second connecting portion 32.
In addition, be also provided with two binding posts 6 on the outer wall of described protecgulum 1, the wire of drawing from two terminals of described thick-film resistor sheet 10 is electrically connected to described two binding posts 6 respectively.When the oil mass in fuel tank changes, float 21 fluctuates, thereby drive float lever 2 and connecting portion 3 synchronously to rotate, support 7 and brush 9 synchronously swing, because variation has occurred for brush 9 and the contact position of thick-film resistor sheet 10, therefore cause the resistance value of thick-film resistor sheet 10 places in circuit to change, outside control circuit, by the real-time resistance value of described thick-film resistor sheet 10, obtains the real-time oil quantity data in fuel tank.
Embodiment shown in above foundation is graphic describes structure of the present invention, feature and action effect in detail; the foregoing is only preferred embodiment of the present invention; but the present invention does not limit practical range with shown in drawing; every change of doing according to conception of the present invention; or be revised as the equivalent embodiment of equivalent variations; when not exceeding yet instructions and illustrating contain spiritual, all should be in protection scope of the present invention.
Claims (9)
1. an enclosure-type fuel-quantity transducer, comprises float lever, thick-film resistor sheet, support and is arranged on the brush on described support, and one end of described float lever is fixed with float, and the other end is the bending structure at right angles bending; It is characterized in that, described fuel-quantity transducer also comprises:
Be fixed with the protecgulum of described thick-film resistor sheet;
The bonnet being connected with described protecgulum; And
For the connecting portion that drives described support to swing with the rotation of float lever; And in the process swinging at described support, described brush contacts with described thick-film resistor sheet all the time.
2. enclosure-type fuel-quantity transducer according to claim 1, is characterized in that, described connecting portion comprises the first connecting portion and is convexly set in the second connecting portion of the first end face of described the first connecting portion;
On described protecgulum, offer through hole, the free end of described the second connecting portion stretches in described bonnet inwall after running through described through hole; On the outer wall of described the second connecting portion, be arranged with grommet type seals, on the outer wall of described grommet type seals, offer annular groove, the inwall of described through hole stretches in described annular groove and is against on the bottom land of described annular groove; The first end face of described the first connecting portion is against on the end face of described annular groove;
Described bending structure is fixedly connected with described connecting portion;
The jacket casing that described support has by it is located on the outer wall of described the second connecting portion, the outer wall interference fit of the inwall of described sleeve and described connecting portion.
3. enclosure-type fuel-quantity transducer according to claim 2, is characterized in that,
The first paragraph that is positioned at end of described bending structure runs through described the first connecting portion and the second connecting portion in turn;
The second segment of described bending structure is embedded in second end face relative with described the first end face of described the first connecting portion, and is fixed on described the first connecting portion by the positive stop strip being arranged on described the second end face.
4. enclosure-type fuel-quantity transducer according to claim 2, it is characterized in that, described fuel-quantity transducer also comprises the limited location snap ring that the annular groove offered on the outer wall with described the second connecting portion matches, and described limited location snap ring is against described sleeve section on a side end face of described bonnet.
5. enclosure-type fuel-quantity transducer according to claim 2, is characterized in that, described grommet type seals is made by nitrile rubber or epichlorohydrin rubber.
6. enclosure-type fuel-quantity transducer according to claim 1, is characterized in that, described thick-film resistor sheet is welded on described protecgulum.
7. enclosure-type fuel-quantity transducer according to claim 1, is characterized in that, is also provided with two binding posts on the outer wall of described protecgulum, and the wire of drawing from two terminals of described thick-film resistor sheet is electrically connected to described two binding posts respectively.
8. enclosure-type fuel-quantity transducer according to claim 1, is characterized in that, the junction of described protecgulum and bonnet adopts sealant sealing.
9. according to the enclosure-type fuel-quantity transducer described in claim 1 to 8 any one, it is characterized in that, described protecgulum and bonnet are made by acetal plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310654643.3A CN103616058A (en) | 2013-12-06 | 2013-12-06 | Sealed fuel quantity transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310654643.3A CN103616058A (en) | 2013-12-06 | 2013-12-06 | Sealed fuel quantity transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103616058A true CN103616058A (en) | 2014-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310654643.3A Pending CN103616058A (en) | 2013-12-06 | 2013-12-06 | Sealed fuel quantity transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103616058A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194526A (en) * | 2016-08-31 | 2016-12-07 | 众恒汽车部件有限公司 | A kind of built-in fuel oil pump assembly |
| CN106404124A (en) * | 2016-06-06 | 2017-02-15 | 广东工业大学 | Liquid level sensor |
| CN106895893A (en) * | 2017-02-23 | 2017-06-27 | 合肥协力仪表控制技术股份有限公司 | A kind of novel fuel sensor |
| CN110678720A (en) * | 2017-05-30 | 2020-01-10 | 日本精机株式会社 | Liquid level detection device |
| CN113871117A (en) * | 2021-09-29 | 2021-12-31 | 东莞市东思电子技术有限公司 | Low-cost long-life thick-film resistor plate for oil level sensor and manufacturing method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2879140Y (en) * | 2006-03-08 | 2007-03-14 | 岳阳万力机械制造有限责任公司 | Sealed oil level sensor |
| WO2008142709A1 (en) * | 2007-05-23 | 2008-11-27 | Pricol Limited | A fluid level sensor and a method thereof |
| CN101581594A (en) * | 2009-06-23 | 2009-11-18 | 孙国庆 | Sealed type automobile oil level sensor |
| CN202101738U (en) * | 2011-06-13 | 2012-01-04 | 浙江湖州新京昌电子有限公司 | Sealing type liquid level and oil level sensor |
| CN202971900U (en) * | 2012-12-10 | 2013-06-05 | 江门市大长江集团有限公司 | Sealing structure for fuel quantity transducer and fuel tank |
| CN203606005U (en) * | 2013-12-06 | 2014-05-21 | 安徽江淮汽车股份有限公司 | Sealed type fuel quantity sensor |
-
2013
- 2013-12-06 CN CN201310654643.3A patent/CN103616058A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2879140Y (en) * | 2006-03-08 | 2007-03-14 | 岳阳万力机械制造有限责任公司 | Sealed oil level sensor |
| WO2008142709A1 (en) * | 2007-05-23 | 2008-11-27 | Pricol Limited | A fluid level sensor and a method thereof |
| CN101581594A (en) * | 2009-06-23 | 2009-11-18 | 孙国庆 | Sealed type automobile oil level sensor |
| CN202101738U (en) * | 2011-06-13 | 2012-01-04 | 浙江湖州新京昌电子有限公司 | Sealing type liquid level and oil level sensor |
| CN202971900U (en) * | 2012-12-10 | 2013-06-05 | 江门市大长江集团有限公司 | Sealing structure for fuel quantity transducer and fuel tank |
| CN203606005U (en) * | 2013-12-06 | 2014-05-21 | 安徽江淮汽车股份有限公司 | Sealed type fuel quantity sensor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404124A (en) * | 2016-06-06 | 2017-02-15 | 广东工业大学 | Liquid level sensor |
| CN106194526A (en) * | 2016-08-31 | 2016-12-07 | 众恒汽车部件有限公司 | A kind of built-in fuel oil pump assembly |
| CN106895893A (en) * | 2017-02-23 | 2017-06-27 | 合肥协力仪表控制技术股份有限公司 | A kind of novel fuel sensor |
| CN110678720A (en) * | 2017-05-30 | 2020-01-10 | 日本精机株式会社 | Liquid level detection device |
| CN113871117A (en) * | 2021-09-29 | 2021-12-31 | 东莞市东思电子技术有限公司 | Low-cost long-life thick-film resistor plate for oil level sensor and manufacturing method thereof |
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| PB01 | Publication | ||
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Application publication date: 20140305 |