WO2000026620A1 - Indicateur de niveau et procede servant a fabriquer une electrode conductrice d'indicateur de niveau - Google Patents
Indicateur de niveau et procede servant a fabriquer une electrode conductrice d'indicateur de niveau Download PDFInfo
- Publication number
- WO2000026620A1 WO2000026620A1 PCT/JP1999/005740 JP9905740W WO0026620A1 WO 2000026620 A1 WO2000026620 A1 WO 2000026620A1 JP 9905740 W JP9905740 W JP 9905740W WO 0026620 A1 WO0026620 A1 WO 0026620A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid level
- contact portion
- conductor electrode
- alloy
- silver
- Prior art date
Links
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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- 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
- G01F23/363—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 using electromechanically actuated indicating means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
Definitions
- the present invention relates to a liquid level detecting device for measuring, for example, a liquid level in a fuel tank of a vehicle and a method of manufacturing a conductor electrode used for the same, and more particularly to a contact portion provided on a slide or a conductor electrode provided on an insulating substrate.
- a liquid level detecting device for measuring, for example, a liquid level in a fuel tank of a vehicle and a method of manufacturing a conductor electrode used for the same, and more particularly to a contact portion provided on a slide or a conductor electrode provided on an insulating substrate.
- a mover composed of a float that moves up and down following the liquid level in a fuel tank, a contact portion provided on a sliding body that slides in conjunction with the movement of the mover, An insulating substrate provided with conductor electrodes having a predetermined arrangement pattern shape according to the sliding track, and the vertical movement of the liquid level is transmitted to the sliding body via the mover, whereby the contact portion of the sliding body is connected to the conductor.
- a liquid level detecting device that contacts a conductor electrode while sliding on the electrode, and the resistance value changes according to the position of the contacted conductor electrode, thereby detecting a liquid amount in a fuel tank is well known.
- the material of the contact portion is generally an Ag Pd (silver palladium) alloy, an Ag Cu (silver copper) alloy, an Ag Ni (silver nickel) alloy, or the like.
- the conductor electrode 4 is made of a mixture of Ag Pd (silver palladium) powder and glass, as shown in, for example, Japanese Utility Model Application Publication No. Hei 4-16882. It is known that conductive electrodes can be obtained by printing a paste made by mixing Ag (silver) powder, palladium (Pd) powder, and glass powder on an insulating substrate, drying it, and then firing it. . Ag (silver) has low electrical resistance and excellent conductivity.
- a contact portion or a conductor electrode that is resistant to deterioration such as sulfuration has been desired.
- a conductive electrode made of an Ag (silver) alloy is covered with a conductive protective film for preventing deterioration.
- the present invention provides a liquid level detection device having a contact portion or a conductor electrode that is resistant to deterioration and corrosion such as sulfuration, or a method of manufacturing a conductor electrode used for the same. It is intended to provide a method for producing a liquid level detecting device having a contact portion or a conductor electrode resistant to deterioration and corrosion while suppressing the deterioration, or a conductor electrode used for the same. Disclosure of the invention
- a liquid level detection device comprises: a movable element that operates by following a liquid level in a fuel tank; a contact portion provided on a sliding body that interlocks with the movement of the movable element; And an insulating substrate with conductive electrodes, and the contacts are made of an alloy that does not contain Ag (silver).
- Can be Alloys that do not contain Ag (silver) include all alloys that have resistance to deterioration in fuel, but this kind of alloy contains Cu Ni (copper nickel) as the main component.
- Alloys containing CuNiZn (copper nickel zinc) or alloys containing CuNiZn are relatively inexpensive and have high resistance to deterioration.
- the use of an alloy containing CuNiZn (copper nickel zinc) as a main component can suppress oxidation by the Zn (zinc) component and provide excellent resistance to alcohol and moisture in fuel. There are many benefits from having.
- the conductor electrode side by covering the conductor electrode side with a conductive protective film having corrosion resistance, not only the contact part side but also the deterioration resistance of the conductor electrode side can be improved. Anything that can protect the conductor electrode is included. It can be formed by a rolling force S, for example, Ni (nickel) plating.
- the method for producing a conductor electrode used in the liquid level detection device of the present invention includes the steps of: forming a paste obtained by mixing a powder containing Ag Pd (silver-palladium) alloy powder and a glass powder on an insulating substrate; A printing step for printing and a baking step for baking the paste printed on the insulating substrate make it possible to obtain a conductive electrode having high resistance to deterioration. This eliminates the need for additional equipment and can suppress cost increases and man-hours.
- the liquid level detecting device of the present invention includes a movable element that operates by following a liquid level in a fuel tank, a contact portion provided on a sliding body that interlocks with the movement of the movable element, and the contact portion slides.
- the conductive electrodes are made of a mixture of Ag Pd (silver palladium) alloy powder and glass. Performance can be improved, and it is not necessary to add a conductive protective film as in the related art, so that cost increase and man-hour increase can be suppressed.
- the Ag Pd (silver palladium) alloy powder may be only the Ag Pd (silver palladium) alloy, but it is also possible to add or add a powder component of another substance to the powder containing this as a main component. It is possible.
- the ratio of Pd (palladium) in the alloy containing silver palladium Ag Pd (silver palladium) as the main component is set to approximately 40% by weight or more, Pd (palladium) can be reduced. Excellent deterioration resistance can be imparted as compared with alloys of about 40% by weight or less.
- the contact part is made of an alloy mainly composed of copper and nickel or an alloy mainly composed of copper, nickel and zinc, the deterioration resistance of the conductor electrode side is also improved. And the durability can be further improved.
- the contact portion since the hardness of the contact portion is lower than that of the conductor electrode, abrasion of the conductor electrode having a small thickness can be suppressed, and the durability is excellent. Also, in this case, the contact portion is formed on a contact member separately attached to the sliding body, so that a predetermined portion of the conductive plate, which itself becomes the sliding body, is partially deformed to constitute the contact portion as in the related art. Compared to the case of a conductor electrode, the thickness of the contact portion does not depend on the thickness of the sliding body, which makes it possible to increase the thickness of the contact portion, and wear due to lower hardness than the conductor electrode It is possible to form a contact portion capable of withstanding the above.
- the present invention provides a movable element which operates following a liquid level in a fuel tank, a contact portion provided on a sliding body interlocked with the movement of the movable element, and a conductor electrode on which the contact portion slides.
- An alloy of a first conductive material other than silver and a second conductive material other than Pd (palladium) that has resistance to deterioration or corrosion in fuel It is possible to improve the deterioration resistance and corrosion resistance while being inexpensive.
- Cu (copper) is suitable as the first conductive substance, and has low electric resistance, excellent conductivity, and can be inexpensive.
- Ni (nickel) is suitable as the second conductive material, which has high resistance to deterioration and corrosion and can be inexpensive.
- the contact portion contains Zn (zinc), the oxidation resistance can be improved, and the fuel can have excellent resistance to alcohol and moisture.
- FIGS. 1 to 5 show a first embodiment of the present invention.
- FIG. 1 is a front view of an essential part of a liquid level detecting device
- FIG. 2 is an enlarged front view of the essential part
- FIG. FIG. 4 is a cross-sectional view taken along the line A—A
- FIG. 4 is a front view showing the back side of the sliding body in FIG. 2
- FIG. 5 is a liquid level display system using the liquid level detection device according to the present invention as a liquid level detection sensor.
- It is a block diagram showing an example. 6 and 7 show a second embodiment of the present invention.
- FIG. 6 is a sectional view of a main part showing a conductor electrode
- FIG. 7 is a block diagram showing a production process of the conductor electrode.
- the liquid level detecting device 1 is housed in a fuel tank 2 and provided on a mounting plate 3 attached to an opening of the fuel tank 2.
- the conductor electrodes 4 are provided on the insulating substrate 6 at appropriate intervals on the contact portions. It comprises a plurality of electrode patterns 44 arranged in a fan shape along the seven rotation orbits.
- the resistor 5 is formed, for example, by firing a printing layer mainly containing ruthenium oxide.
- the contact part 7 has a sliding part 71 serving as a sliding contact point with the conductor electrode 4 and a caulking part 7 on the side opposite to the sliding part 71.
- a contact member 73 having 2 is fixed to the sliding body 8 through the caulking portion 72.
- the sliding body 8 is made of a metal plate having a paneling property, for example, a metal plate formed of phosphor bronze, and is responsive to a mover including a float 9 and an arm 10 that move up and down according to the fuel level.
- the contact portion 7 attached and fixed to the insulating substrate 6 is supported and fixed so as to move on the insulating substrate 6 according to the liquid level.
- FIG. 5 shows an example in which such a liquid level detection device 1 is used as a sensor in a liquid amount display system.
- 100 is a microcomputer
- 101 is a drive driver that outputs a predetermined voltage in accordance with a command signal of the microcomputer 100
- 102 is a drive voltage from the drive driver 101.
- a display unit consisting of a cross-coil meter that moves the pointer P in accordance with the output.
- the detection signal of the liquid level detection device 1 is converted into the liquid volume through the microphone computer 100 and the drive driver 101.
- the drive signal is converted into a corresponding drive signal, and based on the drive signal, the pointer P of the display unit 102 is rotated by a predetermined swing angle, and the liquid amount in the fuel tank 2 is displayed.
- the liquid level detecting device 1 is disposed in the fuel tank 2 as described above, and is used in a state of being immersed in the fuel depending on the amount of fuel such as gasoline.
- this liquid volume display system Microcomputer that determines the value Converts to drive voltage through computer 100, drive nozzle 101, and uses this drive voltage to determine the indicated value of pointer P on display unit 102, a so-called microcomputer-controlled liquid level display
- a so-called microcomputer-controlled liquid level display This is a system in which the current flowing between the contact part 7 and the conductor electrode 4 is set to be smaller through circuit components (not shown), for example, a resistor, than the conventional battery-directed type, so-called direct-acting system, so that fuel
- the contact portion 7 or the conductor electrode 4 is particularly susceptible to the influence of sulfuration.
- the contact portion 7 is made of AgPd (silver-palladium) alloy, AgCu (silver-copper) alloy, or AgNi (silver-nickel) alloy which is generally used. It was found through experiments that the gm component was strongly involved in one of the causes of degradation such as sulfurization, and the material of the contact part (contact member) was improved as follows. That is, in the present embodiment, the contact member 73 having the contact portion 7 is made of an alloy containing no silver itself, which is resistant to deterioration such as sulfide, etc., for example, an alloy mainly containing CuNi (copper nickel). , Or Cu NiZn (copper nickel zinc) as the main component, and the contact portion 7 formed of such a material is a separate component from the sliding body 8 as described above. It is fixed to the slide 8 by caulking at.
- the hardness of the contact portion 7 is lower than that of the conductor electrode 4, and is set to, for example, HV (Vickers hardness) of 160 or less (condition: 100 g 5 sec). ing.
- the liquid level detecting device 1 includes a movable element including the float 9 and the arm 10 that operate following the liquid level in the fuel tank 2 and a sliding member that is linked to the movement of the movable element. 8 comprising a contact portion 7 provided on the substrate 8 and an insulating substrate 6 provided with a conductor electrode 4 on which the contact portion 7 slides.
- the contact portion 7 is formed of an alloy containing no Ag (silver). Thereby, deterioration of the contact portion 7 due to sulfuration or the like hardly occurs, and the durability of the contact portion 7 can be enhanced.
- the contact portion 7 and the conductor are more conductive than the conventional battery direct connection type so-called direct acting system. Since the value of the current flowing between the electrodes 4 is small, it is particularly susceptible to the effects of sulfuration of the contact 7, but the contact 7 does not contain Ag (silver). Since the contact portion 7 is hardly deteriorated due to sulfuration or the like by being formed of an alloy, it is particularly useful for a microcomputer-controlled liquid amount display system.
- the upper limit value of the current flowing between the contact part 7 and the conductor electrode 4 is set to 40 mA or less, circuit components such as a battery (not shown) and the liquid level detector 1 The heat generated by the resistor, which lowers the supply voltage (current) to the detection device 1, can be suppressed.
- Ag (silver) -free alloys include all alloys as long as they have resistance to deterioration in fuel, but in particular, CuNi (copper-nickel) alloys or alloys containing them A CuNiZn (copper-nickel-zinc) alloy or an alloy containing the same is preferable for other reasons because it is inexpensive compared to other materials and has high W deterioration.
- the material of the conductor electrode 4 is a mixture of Ag (silver) powder, palladium (Pd) powder, and glass powder, which is then printed on the insulating substrate 4, dried, and fired. It is made of general AgPd (silver-palladium) glass, but if there is a concern about deterioration of the conductor electrode 4 containing Ag (silver), the conductor electrode 4 side has a corrosion-resistant conductive material (not shown). Protective film, such as Ni (nickel) plating.
- the hardness of the contact portion 7 is set lower than that of the conductor electrode 4 so that the thickness of the conductor (for example, 15 ⁇ ) is thinner than the thickness (for example, lmm) of the contact portion 7.
- the wear of the electrode 4 can be suppressed, and the durability can be increased.
- the contact portion 7 is formed on the contact member 73 separately attached to the sliding body 8, a predetermined portion of the conductive plate itself, which itself becomes a sliding body, is partially deformed as in the related art.
- a conductive material made of CuNi (copper nickel) alloy or CuNi Zn (copper nickel zinc) alloy in which the contact part is formed or the sliding body 8 itself has the contact part 7 Compared to the case of a plate, the thickness of the contact portion 7 does not depend on the thickness of the sliding body (conductive plate) 8, and thus the thickness of the contact portion 7 can be increased. In contrast, the contact portion 7 that can withstand wear due to low hardness can be configured, and durability can be improved.
- the present invention provides a movable element including a float 9 and an arm 10 that operate following the liquid level in the fuel tank 2, and a contact portion 7 provided on a sliding body 8 interlocked with the movement of the movable element.
- an insulating substrate 6 provided with a conductive electrode 4 on which the contact portion 7 slides, and the contact portion 7 is resistant to deterioration or resistance in a fuel with a first conductive substance other than Ag (silver).
- a first conductive substance other than Ag silver
- a second conductive substance other than corrosive Pd palladium
- Cu copper
- Ni nickel
- the contact portion 7 contains ⁇ ⁇ ⁇ (zinc)
- the oxidation resistance can be increased, and the fuel can have excellent resistance to alcohol and moisture in the fuel.
- FIG. 6 shows a second embodiment of the present invention, in which the Ag (silver) component of Ag Pd (silver palladium) glass, which has been conventionally used generally as a material for the conductor electrode 4, is a cause of deterioration such as sulfuration. It has been found through experiments and the like that they are strongly involved in the following, and the material of the conductor electrode 4 has been improved as follows.
- a movable element composed of a float 9 and an arm 10 operating following the liquid level in the fuel tank 2 and a contact portion provided on a sliding body 8 interlocked with the movement of the movable element 7 and an insulating substrate 6 provided with a conductor electrode 4 on which the contact portion 7 slides, is the same as the first embodiment, but as shown in FIG.
- the electrode 4 is composed of a mixture of particles (powder) 200 of AgPd (silver palladium) alloy and glass 300.
- the conductor electrode 4 composed of a mixture of particles 200 of Ag Pd (silver-palladium) alloy and glass 300 is a powder of Ag Pd (silver-palladium) alloy.
- a mixing step S1 of mixing the paste with the glass powder to form a paste a printing step S2 of printing the paste on the insulating substrate 6, a drying step S3 of drying the printed paste, and an insulating substrate 6
- Ag Pd (silver palladium) alloy can be an alloy containing only Ag Pd (silver palladium) or an alloy containing this as a main component. (Palladium) alloy is produced and processed in a pulverization process to form an Ag Pd (silver palladium) alloy powder.
- Ag (silver) powder and palladium (P d) powder The paste obtained by mixing the powder and glass powder is printed on an insulating substrate, dried, and then fired. Under the firing conditions, Ag (silver) and Pd (palladium) are: However, the alloy was not completely alloyed. Therefore, when abrasion powder was generated due to friction with the contact portion 7, Ag (silver) was easily sulfided.
- the alloy that had been alloyed beforehand was used as powder. Therefore, the connection between Ag (silver) and Pd (palladium) is strong, Conductor electrode 4 that is resistant to deterioration such as At this time, it is desirable that the ratio of Pd (palladium) in the AgPd (silver-palladium) alloy be set to approximately 40% by weight or more, and that the ratio of Pd (palladium) is approximately 40% by weight or less. It was confirmed that it had excellent deterioration resistance.
- the liquid level detecting device 1 includes the mover including the float 9 and the arm 10 that operate following the liquid level in the fuel tank 2 and the movement of the mover in conjunction with the movement of the mover.
- a contact portion 7 provided on a sliding body 8 that slides, and an insulating substrate 6 provided with a conductor electrode 4 on which the contact portion 7 slides, wherein the conductor electrode 4 is made of Ag Pd (silver palladium) alloy particles (
- the conductor electrode 4 is made of Ag Pd (silver palladium) alloy particles
- the Ag Pd (silver-palladium) alloy powder may be Ag Pd (silver-palladium) alloy alone, but powder components of other substances can be added or added.
- the conductor electrode 4 according to the embodiment includes a mixing step S1 in which an AgPd (silver-palladium) alloy powder and a glass powder are mixed to form a base, and this paste is printed on the insulating substrate 6.
- Printing step S2, and drying step S3 for drying the printed paste By forming from the sintering step S4 for sintering the paste printed on the insulating substrate 6, it is possible to obtain the conductive electrode 4 having high deterioration resistance, and to add a conductive protective film as in the conventional case.
- steps S1 to S4 shown in the present embodiment are merely examples, and the powder of AgPd (silver-palladium) alloy and glass powder are mixed to form a paste, and this paste is insulated. Any material may be used as long as it is printed on the substrate 6 and baked to obtain the conductor electrode 4.
- the ratio of Pd (palladium) in the silver-palladium Ag Pd (silver-palladium) alloy is set to about 40% by weight or more, the alloy having Pd (palladium) of about 40% by weight or less can be obtained. Excellent deterioration resistance can be provided.
- a movable element consisting of a float 9 and an arm 10 operating following the liquid level in the fuel tank 2 and a sliding body 8 linked to the movement of the movable element are provided.
- a contact portion 7 is provided, and an insulating substrate 6 provided with a conductor electrode 4 on which the contact portion 7 slides.
- the conductor electrode 4 is made of Ag Pd (silver palladium) alloy particles (powder) 200 If the contact portion 7 is made of a CuNi alloy or a CuNiZn alloy, the deterioration resistance of both the conductor electrode 4 and the contact portion 7 is improved. This makes it possible to provide a liquid level detection device with high product reliability.
- the second and third embodiments are also advantageous in incorporating the liquid level detection device 1 into a microcomputer-controlled liquid amount display system.
- the mover including the float 9 and the arm 10 is used.
- the present invention provides the insulating substrate 6 provided with the conductor electrode 4 vertically on the tank 2 so as to surround the insulating substrate 6. It may be applied to a so-called direct type liquid level detecting device in which a sliding body 8 having a contact portion 7 on the inner wall of the main body 9 is provided.
- the present invention is not limited to a liquid level detecting device of a vehicle such as an automobile, and can be widely applied to a liquid level detecting device used in a state of being immersed in a liquid such as fuel.
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Level Indicators Using A Float (AREA)
- Adjustable Resistors (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/582,407 US6389892B1 (en) | 1998-10-30 | 1999-10-18 | Liquid level detection device and method of manufacturing conductor electrode used therefor |
EP99947950A EP1061345A1 (en) | 1998-10-30 | 1999-10-18 | Level indicator and method of manufacturing conductor electrode of level indicator |
KR1020007007172A KR20010033652A (ko) | 1998-10-30 | 1999-10-18 | 액면검출장치 및 그에 이용되는 도체전극의 제조방법 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10/311078 | 1998-10-30 | ||
JP10311078A JP2000136956A (ja) | 1998-10-30 | 1998-10-30 | 液面検出装置及びそれに用いられる導体電極の製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000026620A1 true WO2000026620A1 (fr) | 2000-05-11 |
Family
ID=18012864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/005740 WO2000026620A1 (fr) | 1998-10-30 | 1999-10-18 | Indicateur de niveau et procede servant a fabriquer une electrode conductrice d'indicateur de niveau |
Country Status (6)
Country | Link |
---|---|
US (1) | US6389892B1 (ja) |
EP (1) | EP1061345A1 (ja) |
JP (1) | JP2000136956A (ja) |
KR (1) | KR20010033652A (ja) |
CN (1) | CN1287613A (ja) |
WO (1) | WO2000026620A1 (ja) |
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FR2815707A1 (fr) * | 2000-10-24 | 2002-04-26 | Denso Corp | Detecteur de contact glissant |
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JP3555136B2 (ja) * | 2000-07-31 | 2004-08-18 | 日本精機株式会社 | 抵抗式液位計測装置 |
KR20020080564A (ko) * | 2001-04-16 | 2002-10-26 | 한국항공우주연구원 | 위성체 부품 시험용 습기 챔버 습도조절용 수조의수위조절장치 |
AU2002322305A1 (en) * | 2001-06-28 | 2003-03-03 | Bourns, Inc. | Fuel level sensing system |
JP3901968B2 (ja) * | 2001-08-27 | 2007-04-04 | 矢崎総業株式会社 | 液面レベル検出装置 |
US6518873B1 (en) * | 2001-09-13 | 2003-02-11 | Bourns, Inc. | Variable resistive element |
EP1316782B8 (en) * | 2001-12-03 | 2008-04-23 | VDO Automotive AG | A method and apparatus for measuring a fluid level and a motor vehicle provided with such apparatus |
KR100435335B1 (ko) * | 2002-01-11 | 2004-06-10 | 현대자동차주식회사 | 연료 센더의 전극 재료 조성물 |
JP2004093313A (ja) * | 2002-08-30 | 2004-03-25 | Nippon Seiki Co Ltd | 液面検出装置 |
JP2004184097A (ja) | 2002-11-29 | 2004-07-02 | Nippon Seiki Co Ltd | 液面検出装置 |
DE10308957A1 (de) | 2003-02-28 | 2004-09-09 | Siemens Ag | Füllstandsgeber für einen Kraftstofftank eines Kraftfahrzeugs |
DE10317809A1 (de) * | 2003-04-16 | 2004-11-04 | Siemens Ag | Füllstandssensor für einen Kraftstoffbehälter |
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JP2007139679A (ja) * | 2005-11-22 | 2007-06-07 | Nippon Seiki Co Ltd | 液面検出装置 |
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JP5711599B2 (ja) * | 2010-10-22 | 2015-05-07 | 矢崎総業株式会社 | 液面レベル検出装置 |
JP5647021B2 (ja) * | 2011-01-24 | 2014-12-24 | 矢崎総業株式会社 | 液面レベル検出装置 |
JP5711598B2 (ja) * | 2011-01-24 | 2015-05-07 | 矢崎総業株式会社 | 液面レベル検出装置 |
JP6026117B2 (ja) * | 2012-03-14 | 2016-11-16 | 愛三工業株式会社 | 摺動式液面検出装置 |
GB201205074D0 (en) * | 2012-03-22 | 2012-05-09 | Airbus Operations Ltd | Sensor device and method for communicating with sensor devices |
DE102016214265B4 (de) * | 2016-08-02 | 2022-10-13 | Vitesco Technologies GmbH | Leiterplatte und Verfahren zur Herstellung einer solchen Leiterplatte |
CN108987010A (zh) * | 2018-07-10 | 2018-12-11 | 广东风华高新科技股份有限公司 | 一种油位电阻片及其制造方法 |
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JPH0616824U (ja) * | 1992-07-31 | 1994-03-04 | 株式会社カンセイ | 液面検出器 |
JPH0640821U (ja) * | 1992-10-29 | 1994-05-31 | 日本精機株式会社 | 液量検出装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3142843C2 (de) | 1981-10-29 | 1985-01-03 | Carl Hurth Maschinen- und Zahnradfabrik GmbH & Co, 8000 München | Maschine zum Feinbearbeiten der Zahnflanken von verzahnten Werkstücken |
JPH041682A (ja) | 1990-04-18 | 1992-01-07 | Nec Corp | 印刷装置 |
JP2516283B2 (ja) | 1991-03-27 | 1996-07-24 | 株式会社トクヤマ | ポリプロピレン樹脂成形品の製造方法 |
JPH0640821A (ja) | 1992-07-24 | 1994-02-15 | Toshiba Silicone Co Ltd | 防カビ性ポリオルガノシロキサン組成物 |
US5746088A (en) * | 1996-02-09 | 1998-05-05 | General Motors Corporation | Fuel system low current rheostat |
US6127916A (en) * | 1996-05-09 | 2000-10-03 | Cts Corporation | Fuel system low current rheostat |
-
1998
- 1998-10-30 JP JP10311078A patent/JP2000136956A/ja active Pending
-
1999
- 1999-10-18 EP EP99947950A patent/EP1061345A1/en not_active Withdrawn
- 1999-10-18 CN CN99801971A patent/CN1287613A/zh active Pending
- 1999-10-18 KR KR1020007007172A patent/KR20010033652A/ko not_active Application Discontinuation
- 1999-10-18 US US09/582,407 patent/US6389892B1/en not_active Expired - Fee Related
- 1999-10-18 WO PCT/JP1999/005740 patent/WO2000026620A1/ja not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54157663A (en) * | 1978-05-26 | 1979-12-12 | Hitachi Chemical Co Ltd | Resistor for detecting liquid level |
JPS5882622U (ja) * | 1981-11-30 | 1983-06-04 | 日本メクトロン株式会社 | 垂直式燃料計の接触子構造 |
JPH0616824U (ja) * | 1992-07-31 | 1994-03-04 | 株式会社カンセイ | 液面検出器 |
JPH0640821U (ja) * | 1992-10-29 | 1994-05-31 | 日本精機株式会社 | 液量検出装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2815707A1 (fr) * | 2000-10-24 | 2002-04-26 | Denso Corp | Detecteur de contact glissant |
Also Published As
Publication number | Publication date |
---|---|
CN1287613A (zh) | 2001-03-14 |
EP1061345A1 (en) | 2000-12-20 |
KR20010033652A (ko) | 2001-04-25 |
JP2000136956A (ja) | 2000-05-16 |
US6389892B1 (en) | 2002-05-21 |
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