WO2017081957A1 - Dispositif de détection de niveau de liquide - Google Patents

Dispositif de détection de niveau de liquide Download PDF

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Publication number
WO2017081957A1
WO2017081957A1 PCT/JP2016/079373 JP2016079373W WO2017081957A1 WO 2017081957 A1 WO2017081957 A1 WO 2017081957A1 JP 2016079373 W JP2016079373 W JP 2016079373W WO 2017081957 A1 WO2017081957 A1 WO 2017081957A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid level
level detection
extending
detection device
gap
Prior art date
Application number
PCT/JP2016/079373
Other languages
English (en)
Japanese (ja)
Inventor
鈴木　直人
Original Assignee
株式会社デンソー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Priority to DE112016004529.8T priority Critical patent/DE112016004529T5/de
Publication of WO2017081957A1 publication Critical patent/WO2017081957A1/fr

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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
    • G01F23/64—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 of the free float type without mechanical transmission elements
    • G01F23/72—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 of the free float type without mechanical transmission elements using magnetically actuated indicating means
    • G01F23/74—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 of the free float type without mechanical transmission elements using magnetically actuated indicating means for sensing changes in level only at discrete points
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/02—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding actuated by movement of a float carrying a magnet

Definitions

  • the present disclosure relates to a liquid level detection device that detects a liquid level of a liquid stored in a container.
  • a liquid level detection device for detecting a liquid level of a liquid stored in a container.
  • the liquid level detection device disclosed in Patent Document 1 is connected to a float that floats on a liquid, an elongated detection element that detects the position of the float, a fixed part that is fixed, and a detection element that extends from the fixed part.
  • a terminal having an elongated plate-like extending portion and a body for fixing the fixing portion.
  • the liquid level detection device has a hollow cylindrical portion that opens to the body side, and in the cylindrical portion, the detection element and the extending portion are disposed along the central axis of the cylindrical portion and between the inner wall of the cylindrical portion and the gap. And a cover that is arranged in a state where the space is left open.
  • the terminal since the tip of the extended portion of the terminal is in a free state, the terminal is in a so-called cantilever state.
  • shock or vibration may be applied to the liquid level detection device.
  • the elongated plate-like extending portion in a state like a so-called cantilever is bent or shaken. Therefore, for example, the detection element connected to the extension part contacts the inner wall of the cylinder part, and an excessive stress load is applied between the fixed part fixed to the body and the extension part, for example. There is concern about the load on
  • the present disclosure has been made in view of the above-described problems, and an object thereof is to provide a liquid level detection device that suppresses a load on a detection element or a terminal.
  • a liquid level detection device for detecting a liquid level of a liquid stored in a container, A float floating in a liquid, A detection element for detecting the position of the float; A fixed part to be fixed, and a terminal having an elongated plate-like extended part that extends from the fixed part and is connected to the detection element; A body for fixing the fixing part; A cover that has a hollow cylindrical portion that opens to the body side, and in which the detection element and the extending portion are arranged along the central axis of the cylindrical portion with a gap between the inner wall of the cylindrical portion And comprising The cover has a pair of restricting portions that are positioned opposite to the tip of the extending portion, are opposed to each other, and whose opposing gap is smaller than the inner diameter of the cylindrical portion and larger than the plate thickness of the extending portion.
  • the extending portion provides a liquid level detecting device that is disposed in a facing gap of the restricting portion in a state where the tip is sandwiched from both sides of the extending portion
  • the liquid level of the liquid is detected by detecting the position of the float where the detection element floats in the liquid.
  • the terminal to which the detection element is connected has a fixed portion fixed to the body and an elongated plate-shaped extending portion extending from the fixed portion.
  • the rigidity in the plate thickness direction is lower than the rigidity in the width direction, so that bending and deflection in the plate thickness direction are likely to occur in the extended portion.
  • the restricting portion of the present disclosure is located at a position facing the tip of the extending portion and is opposed to each other, and the facing gap is smaller than the inner diameter of the cylindrical portion and larger than the plate thickness of the extending portion.
  • the extending portion is disposed with the tip sandwiched from both sides in the thickness direction. For this reason, even if the stretching portion is bent or shaken in the thickness direction in accordance with the impact or vibration applied to the apparatus, the displacement of the stretching portion is regulated by the leading end of the stretching portion coming into contact with the regulating portion.
  • By restricting the displacement by such a restricting portion it is suppressed that the detection element comes into contact with the inner wall of the cylindrical portion or an excessive stress load is applied between the fixed portion and the extending portion.
  • FIG. 1 It is sectional drawing which shows the state in which the liquid level detection apparatus in 1st Embodiment was installed in the oil pan. It is a top view of the body in a 1st embodiment. It is a perspective view which expands and shows the connection part in 1st Embodiment. It is a top view of the cover in a 1st embodiment. It is an enlarged view which shows the cylinder part of FIG. It is a fragmentary sectional view which shows arrangement
  • FIG. 5 is a diagram corresponding to FIG. 5 in Modification 3.
  • the liquid level detection device 100 As shown in FIG. 1, the liquid level detection device 100 according to the first embodiment of the present disclosure is mounted on an internal combustion engine of a vehicle and installed in an oil pan 1 as a container.
  • the oil pan 1 is attached to the bottom surface of a cylinder block of an internal combustion engine, and stores engine oil as a liquid.
  • the liquid level detection device 100 is in an environment where it can be subjected to, for example, an impact when a vehicle rides on a step, vibrations generated in an engine, and the like.
  • the liquid level detection device 100 mainly includes a connector part 5, a main body part 7, and a wire 6.
  • the connector part 5 is capable of liquid tightly closing the opening 1a provided on the side part of the oil pan 1 and can be fitted with a mating connector for electrical connection with an external on-vehicle device (for example, a combination meter). Is formed.
  • the main body 7 is fixed to the oil pan 1 in the installed state of FIG.
  • the main body 7 can detect the level LL of the engine oil stored in the oil pan 1.
  • the wire 6 electrically connects the connector part 5 and the main body part 7, and is arranged, for example, over the bracket 3. In this way, the liquid level detection device 100 can output a detection signal from the main body portion 7 to the outside via the wire 6 and the connector portion 5.
  • the main body 7 of the liquid level detection device 100 includes a float 10, a reed switch 20, terminals 30 and 34, a body 40, and a cover 50.
  • the float 10 has a foam 12 and a magnet 14 and can float on the liquid level of the engine oil.
  • the foam 12 is formed in a cylindrical shape by a material having a specific gravity smaller than that of engine oil such as foamed phenol resin.
  • An annular holding groove 12 a is formed on the inner peripheral side of the foam 12.
  • the magnet 14 is a permanent magnet such as a ferrite magnet, and is formed in a cylindrical shape. The magnet 14 is held in the foam 12 by being fitted in the holding groove 12a.
  • the reed switch 20 is a detection element that detects the position of the float 10.
  • the reed switch 20 includes a glass tube 22 formed in a cylindrical shape, and a pair of leads 24 and 25 extending from both ends of the glass tube 22 in a band shape.
  • the glass tube 22 is a hollow cylindrical glass tube, and accommodates the opposing portions which are the ends of the leads 24 and 25 in a liquid-tight manner.
  • Each facing portion is provided so as to be able to bend, and faces each other with a predetermined interval.
  • the opposing portions come into contact with each other, and the reed switch 20 is turned on so that it can conduct between the leads 24 and 25.
  • the reed switch 20 is turned off.
  • the terminals 30 and 34 are formed by plating (for example, tin plating) on the surface of a conductor material such as brass.
  • One terminal 30 is connected to one lead 24 of the reed switch 20 and to a ground wire (not shown).
  • the other terminal 34 is connected to the other lead 25 and to the wire 6.
  • the terminals 30 and 34 are fixed to the body 40 by, for example, insert molding to the body 40.
  • the body 40 is provided integrally with the terminals 30 and 34, and is provided in a plate shape as a whole mainly made of synthetic resin such as polyphenylene sulfide (PPS) resin having excellent oil resistance.
  • PPS polyphenylene sulfide
  • the body 40 includes a flange portion 42, an engagement structure portion 44, and a base portion 46.
  • the flange portion 42 is provided in a hook shape on the outside of the engagement structure portion 44 and the base portion 46.
  • a mounting ring 42a formed in a cylindrical shape with metal is embedded in order to screw the main body portion 7 to the bracket 3.
  • the engagement structure portion 44 is provided at a plurality of locations (for example, 4 locations) between the flange portion 42 and the base portion 46, and forms an engagement structure for engaging with the cover 50 described in detail later.
  • the engagement structure 44 has a structure in which an engagement protrusion 44b is provided in the engagement hole 44a at each location.
  • the base part 46 has a disk shape formed integrally with the flange part 42.
  • the base portion 46 embeds a part of the terminal 30.
  • the terminal 30 integrally includes a fixing portion 31 that is fixed by being embedded in the base portion 46 and an extending portion 32 that extends from the fixing portion 31.
  • a part of the terminal 34 is embedded in the base portion 46 and is exposed on a surface of the base portion 46 that is opposite to the cover 50.
  • the terminal 34 is connected to the lead 25 at this exposed portion.
  • a through hole 46a that penetrates the cover 50 side and the exposed portion side is provided. By inserting the lead 25 into the through hole 46a, most of the reed switch 20 is a base. It is arranged closer to the cover 50 than the portion 46.
  • the reed switch 20 is arranged to extend toward the cover 50 along the direction in which the through hole 46a is opened.
  • an elongated plate-like extending portion 32 of the terminal 30 extends substantially parallel to the reed switch 20.
  • stretching part 32 has the connection part 32a connected with the lead
  • a clip plate 32c that can be bent in the width direction Dw and the plate thickness direction Dt of the extending portion 32 of the terminal 30 is provided integrally with the extending portion main body plate 32b at the distal end 32e of the extending portion 32.
  • stretching part 32 is a direction orthogonal to the plane of the extending
  • stretching part 32 is orthogonal to the plate
  • the direction perpendicular to the longitudinal direction of the extending portion 32 that is, the axial direction Da of the central axis CA shown in FIG. 5).
  • the leading end 24a of the lead 24 is sandwiched between the extending portion main body plate 32b and the sandwiching plate 32c from both sides in the plate thickness direction Dt. ing.
  • the extending portion 32 and the reed switch 20 are electrically and mechanically connected by such a connecting portion 32a.
  • the cover 50 is formed in a cylindrical shape as a whole by synthetic resin such as PPS resin, and is disposed to face the base portion 46 of the body 40.
  • the cover 50 integrally includes an outer peripheral engaging portion 52, a cylindrical portion 54, and a pair of restricting portions 58.
  • the outer peripheral engagement portion 52 is formed in a hollow cylindrical shape that opens to the body 40 side on the outermost peripheral side of the cover 50.
  • the outer peripheral engaging portion 52 has engaging claws 52a at a plurality of locations (for example, four locations) on the body 40 side.
  • the width of each engagement claw 52a is set smaller than the circumferential dimension of each corresponding engagement hole 44a.
  • the cover 50 is held by the body 40 as each engaging claw 52a engages with each engaging protrusion 44b in the corresponding engaging hole 44a.
  • the cylindrical portion 54 is formed in a hollow cylindrical shape having an opening on the body 40 side on the inner peripheral side with respect to the outer peripheral engaging portion 52 and a bottom surface 57 provided on the opposite side to the body 40. Since the body side opening 55 of the cylindrical portion 54 communicates with the through hole 46a, the direction in which the through hole 46a is opened and the axial direction Da of the central axis CA of the cylindrical portion 54 substantially match. In this way, the extending portion 32 of the reed switch 20 and the terminal 30 is disposed along the central axis CA in the cylindrical portion 54 with a gap from the inner wall 56 of the cylindrical portion 54.
  • the float 10 is disposed in the space between the outer peripheral engaging portion 52 and the cylindrical portion 54.
  • the float 10 moves up and down while being guided by the cylindrical portion 54 following the liquid level LL by being inserted into the cylindrical portion 54.
  • the float 10 is restricted to move up and down within a predetermined range by contact with the body 40 or the cover 50.
  • a pair of regulating portions 58 are formed at positions facing the tip 32 e of the extending portion 32 inside the inner wall 56.
  • the pair of restricting portions 58 are disposed to face each other, and an opposing gap FG is formed between the restricting portions 58.
  • the facing gap FG is smaller than the inner diameter ID of the cylindrical portion 54 and larger than the plate thickness ET of the extending portion 32.
  • stretching part 32 is arrange
  • the plate thickness ET of the extending portion 32 is the thickness of the tip 32e of the extending portion 32 in the plate thickness direction Dt, more specifically, the thickness of the connecting portion 32a in the plate thickness direction Dt.
  • the opposing gap FG is equal to the thickness of the extension portion main body plate 32b, the lead 24, in accordance with the connection portion 32a in which the lead 24 is sandwiched between the extension portion main body plate 32b and the sandwiching plate 32c from both sides.
  • the thickness of the connecting portion 32a obtained by adding the thickness of the sandwiching plate 32c.
  • the connecting portion 32 a including the lead 24 in the extending portion 32 is disposed in the facing gap FG of the restricting portion 58.
  • Each restricting portion 58 of the present embodiment is provided in the shape of a protrusion that projects from the inner wall 56 of the cylindrical portion 54 toward the central axis CA so as to narrow the opposing gap FG.
  • each regulating portion 58 is connected to the bottom surface 57 of the cylindrical portion 54 on the side opposite to the body 40.
  • Each restricting portion 58 has an inclined surface 59 on the body 40 side. The inclined surface 59 is formed in a planar shape in which the distance from the central axis CA decreases (ie, approaches the central axis CA) as it faces the body 40 and toward the opposite side of the body 40.
  • each restricting portion 58 has a flat opposed plane 60 that faces the extending portion 32.
  • the opposing flat surfaces 60 are provided at positions where the central axis CA is sandwiched between them and where the opposing gap FG is minimum.
  • Each opposing plane 60 extends along the width direction Dw so that the opposing gap FG between the opposing planes 60 has a substantially constant size at each location in the width direction Dw. Further, the length PL in the width direction Dw of the opposing plane 60 is smaller than the plate width EW of the extending portion 32.
  • the side surfaces 61 on both sides of the width direction Dw connected to the facing plane 60 are inclined so as to move away from the central axis CA as the distance from the facing plane 60 increases. Thereby, on the outer side in the width direction Dw with respect to the facing plane 60, the facing gap FG between the corresponding side surfaces 61 increases as the distance from the central axis CA in the width direction Dw increases.
  • a pair of enlarged spaces 62 formed by such enlargement is provided in the cylindrical portion 54 with the central axis CA sandwiched in the width direction Dw.
  • the reed switch 20 is connected to the terminals 30 and 34. Specifically, before the connecting step, at the tip 32e of the extending portion 32 of the terminal 30 inserted into the body 40, the extending portion main body plate 32b and the sandwiching plate 32c are not bent and are integrated on the same plane. It is in a state of being lined up.
  • the lead 24 of the reed switch 20 is disposed at the distal end 32e of the extending portion 32, and the sandwiching plate 32c is bent with respect to the extending portion main body plate 32b, whereby the lead 24 is formed between the extending portion main body plate 32b and the sandwiching plate 32c. Put in between.
  • the reed switch 20 is connected to the terminal 30 by pressurization and energization, for example, by energization heat caulking, and the connection portion 32a is formed.
  • One terminal 34 is also connected to the lead 25 of the reed switch 20 by, for example, energization heat caulking.
  • the float 10 is inserted between the tube portion 54 and the outer peripheral engagement portion 52 of the cover 50.
  • the extending portion 32 of the terminal 30 and the reed switch 20 are inserted into the cylindrical portion 54.
  • the body 40 and the cover 50 are opposed to each other in a posture in which the extending direction (longitudinal direction) of the extending portion 32 and the axial direction Da of the cylindrical portion 54 are matched.
  • the extending portion 32 and the reed switch 20 are inserted into the cylindrical portion 54 by moving the cover 50 toward the body 40 along the axial direction Da.
  • the pair of regulating portions 58 in the cylindrical portion 54 face each other.
  • the plate thickness direction Dt matches.
  • the body side opening 55 of the cylinder portion 54 is just the base portion 46. It contacts the outer peripheral contour portion of the through hole 46a.
  • the tip 32e (more specifically, the connecting portion 32a in the present embodiment) of the extending portion 32 in the cylindrical portion 54 is formed by the restricting portion 58 in a state of being sandwiched from both sides in the plate thickness direction Dt. It is arranged in the opposite gap FG.
  • the liquid level LL of the liquid is detected by detecting the position of the float 10 that floats on the engine oil as the liquid by the reed switch 20 as the detection element.
  • the terminal 30 to which the reed switch 20 is connected has a fixing portion 31 fixed to the body 40 and an elongated plate-like extending portion 32 extending from the fixing portion 31.
  • the rigidity in the plate thickness direction Dt is lower than the rigidity in the width direction Dw. Therefore, the extension portion 32 is likely to bend and shake in the plate thickness direction Dt.
  • the restricting portion 58 provided in the present disclosure is located at a position facing the tip 32e of the extending portion 32, and is opposed to each other, and the facing gap FG is smaller than the inner diameter ID of the cylindrical portion 54, and It is larger than the plate thickness ET of the extending portion 32.
  • the extending portion 32 is disposed in the facing gap FG with the tip 32e sandwiched from both sides in the plate thickness direction Dt. For this reason, even if bending or vibration in the thickness direction Dt occurs in the extending portion 32 in accordance with the impact or vibration applied to the apparatus 100, the extending portion 32 is brought into contact with the restriction portion 58 by the tip 32e of the extending portion 32 coming into contact with the regulating portion 58. Displacement is regulated.
  • the restricting portion 58 is provided in the cylindrical portion 54 in a protruding shape that protrudes from the inner wall 56 toward the central axis CA.
  • the displacement of the extending portion 32 is easily restricted by the restricting portion 58 provided in such a protruding shape without impairing the strength of the cover 50. Therefore, the load on the reed switch 20 and the terminal 30 can be suppressed.
  • the restricting portion 58 has the enlarged space 62 formed by enlarging as the facing gap FG is further away from the central axis CA in the width direction Dw. Even if the cover 50 is slightly rotated in the circumferential direction from the normal angle with respect to the body 40, the reed switch 20 and the terminal 30 during use or assembling, the plate thickness direction Dt The edges in the width direction Dw of the extending portion 32 sandwiched between the restricting portions 58 from both sides of the plate are difficult to contact the restricting portions 58. In this way, the extension part 32 and the reed switch 20 connected to the extension part 32 are less susceptible to torsional stress, so that the load on the reed switch 20 and the terminal 30 can be suppressed.
  • the periphery of the restricting portion 58 can be thinned by the presence of the enlarged space 62, so that the performance degradation of the restricting portion 58 due to the occurrence of sink marks is suppressed. can do.
  • the restricting portion 58 has a flat opposed plane 60 that faces the extending portion 32. Since the distal end 32e of the extending portion 32 comes into contact with the flat opposed flat surface 60, the stress received by the restricting portion 58 at the time of contact can be dispersed, and the restricting portion 58 can be prevented from being degraded due to wear or the like. .
  • the restricting portion 58 has the inclined surface 59 in which the distance from the central axis CA decreases as it faces the body 40 and toward the opposite side of the body 40.
  • the extending portion 32 is bent at the tip 32e and sandwiches the lead 24 corresponding to the connection terminal of the reed switch 20 from both sides, thereby connecting the reed switch 20 to the connecting portion. 32a, and the connecting portion 32a is disposed in the facing gap FG.
  • the load to the reed switch 20 and the terminal 30 can be reliably suppressed by sandwiching the lead 24 and the extending portion 32 together.
  • the second embodiment of the present disclosure is a modification of the first embodiment.
  • the second embodiment will be described with a focus on differences from the first embodiment.
  • the restricting portion 258 is formed by providing a notched groove on the bottom surface 57 of the cylindrical portion 54.
  • the opposing flat surfaces 260 included in the pair of restricting portions 258 extend to both sides in the width direction Dw and reach the inner wall 56 of the cylindrical portion 54. Therefore, the opposing gap FG has a substantially constant size at each location in the width direction Dw.
  • the extending portion 232 in the second embodiment is not connected to the reed switch 20 at the tip 232e of the extending portion 232. Specifically, as shown in FIG. 10, the extending portion 232 extends further to the opposite side of the body 40 than the connection portion with the reed switch 20. In addition, at the tip 232e of the extending portion 232, one extending portion main body plate 232b exists. In addition, in the connection location with the reed switch 20, the connection part 232a which pinches
  • the extending portion 232 is disposed in the facing gap FG of the restricting portion 258 with the front end 232e in a state where the extending portion main body plate 232b is one sheet from both sides in the plate thickness direction Dt.
  • the facing gap FG is smaller than the inner diameter ID of the cylindrical portion 54 and larger than the plate thickness ET of the extending portion main body plate 232b.
  • the plate thickness (plate thickness of the extended portion 232) ET of the extended portion main body plate 232b is the thickness of the tip 232e of the extended portion 232 in the plate thickness direction Dt, more specifically, the extension in the plate thickness direction Dt. This is the thickness of the part main body plate 232b.
  • the extending portion 232 extends to the opposite side of the body 40 from the connection point with the reed switch 20.
  • the restricting portion 258 sandwiches only the extending portion 32, the size of the facing gap FG can be designed considering only the thickness tolerance of the extending portion 232. Therefore, the facing gap FG can be reduced and the performance of the restricting portion 258 can be improved.
  • the bottom portion 57 is not provided in the cylindrical portion 54, and the extending portion 32 is arranged in the through-hole-like facing gap FG with the tip 232 e sandwiched therebetween. It may be.
  • the restricting portion 58 has a flat plane 959 substantially perpendicular to the axial direction Da of the central axis CA, instead of the inclined surface 59 facing the body 40 side. May be.
  • a curved opposing curved surface 960 that faces the extending portion 32 may be provided.
  • the connecting portion 32a of the extending portion 32 may be connected to the lead 24 by a method other than energizing heat caulking such as soldering.
  • the application target of the present disclosure is not limited to the detection of the engine oil liquid level LL.
  • the present disclosure can be applied to a liquid level detection device in a container for other liquids mounted on the vehicle, such as brake fluid, engine coolant, and fuel.
  • the present disclosure can be applied to a liquid level detection device in a container provided in various consumer devices and various transport devices, not limited to vehicles.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Level Indicators Using A Float (AREA)

Abstract

L'invention concerne un dispositif de détection de niveau de liquide pour détecter le niveau d'huile moteur contenu dans un carter d'huile, qui comprend : un flotteur flottant sur l'huile moteur ; un commutateur principal (20) pour détecter la position du flotteur ; une borne (30) ayant une section d'extension en forme de plaque allongée (32) s'étendant à partir d'une section de fixation qui est fixée, la section d'extension (32) étant connecté au commutateur principal (20) ; un corps (40) auquel la section de fixation est fixée ; et un couvercle (50) ayant une section cylindrique creuse (54) ouverte vers le côté corps (40), la section cylindrique creuse (46) ayant le commutateur principal (20) et la section d'extension (32) agencés en son sein. Le couvercle (50) comprend une paire de sections de restriction (58) situées à des positions qui font face à l'extrémité avant de la section d'extension (32), et agencées face à face. Un espace (FG) à travers lequel la paire de sections de restriction (58) se font face est plus petit que le diamètre interne de la section cylindrique (46) et plus grand que l'épaisseur de plaque de la section d'extension (32). La section d'extension (32) est disposée dans l'espace (FG) entre la section de restriction (58) tout en prenant en sandwich l'extrémité avant à partir des deux côtés dans la direction d'épaisseur de plaque (Dt).
PCT/JP2016/079373 2015-11-09 2016-10-04 Dispositif de détection de niveau de liquide WO2017081957A1 (fr)

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Application Number Priority Date Filing Date Title
DE112016004529.8T DE112016004529T5 (de) 2015-11-09 2016-10-04 Flüssigkeitsniveauerfassungsvorrichtung

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Application Number Priority Date Filing Date Title
JP2015-219720 2015-11-09
JP2015219720A JP6365508B2 (ja) 2015-11-09 2015-11-09 液面検出装置

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0272937U (fr) * 1988-11-23 1990-06-04
JPH03101429U (fr) * 1990-02-02 1991-10-23
JPH0429838U (fr) * 1990-07-03 1992-03-10
JPH10281855A (ja) * 1997-04-04 1998-10-23 Nippon Vinylon Kk フロート式液面計
WO2010146823A1 (fr) * 2009-06-15 2010-12-23 ボッシュ株式会社 Détecteur de niveau de liquide et cuve équipée de ce détecteur
JP2013002965A (ja) * 2011-06-16 2013-01-07 Denso Corp 液面レベルセンサ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014235157A (ja) 2013-06-05 2014-12-15 株式会社デンソー 液面検出装置
JP5938065B2 (ja) 2014-05-16 2016-06-22 ソフトバンク株式会社 表示制御装置及びプログラム

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0272937U (fr) * 1988-11-23 1990-06-04
JPH03101429U (fr) * 1990-02-02 1991-10-23
JPH0429838U (fr) * 1990-07-03 1992-03-10
JPH10281855A (ja) * 1997-04-04 1998-10-23 Nippon Vinylon Kk フロート式液面計
WO2010146823A1 (fr) * 2009-06-15 2010-12-23 ボッシュ株式会社 Détecteur de niveau de liquide et cuve équipée de ce détecteur
JP2013002965A (ja) * 2011-06-16 2013-01-07 Denso Corp 液面レベルセンサ

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JP6365508B2 (ja) 2018-08-01
DE112016004529T5 (de) 2018-06-21

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