WO2011074478A1 - 燃料タンク用弁装置 - Google Patents
燃料タンク用弁装置 Download PDFInfo
- Publication number
- WO2011074478A1 WO2011074478A1 PCT/JP2010/072149 JP2010072149W WO2011074478A1 WO 2011074478 A1 WO2011074478 A1 WO 2011074478A1 JP 2010072149 W JP2010072149 W JP 2010072149W WO 2011074478 A1 WO2011074478 A1 WO 2011074478A1
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- WIPO (PCT)
- Prior art keywords
- fuel
- float body
- case
- valve device
- chamber
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K15/03519—Valve arrangements in the vent line
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/01—Arrangement of fuel conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
- F16K24/04—Devices, e.g. valves, for venting or aerating enclosures for venting only
- F16K24/042—Devices, e.g. valves, for venting or aerating enclosures for venting only actuated by a float
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
- F16K24/04—Devices, e.g. valves, for venting or aerating enclosures for venting only
- F16K24/042—Devices, e.g. valves, for venting or aerating enclosures for venting only actuated by a float
- F16K24/044—Devices, e.g. valves, for venting or aerating enclosures for venting only actuated by a float the float being rigidly connected to the valve element, the assembly of float and valve element following a substantially translational movement when actuated, e.g. also for actuating a pilot valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K2015/03561—Venting means working at specific times
- B60K2015/03566—Venting means working at specific times comprising means for stopping the venting of fuel vapor, e.g. during refueling or engine stop
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/2931—Diverse fluid containing pressure systems
- Y10T137/3003—Fluid separating traps or vents
- Y10T137/3084—Discriminating outlet for gas
- Y10T137/309—Fluid sensing valve
- Y10T137/3099—Float responsive
Definitions
- the present invention relates to an improvement in a valve device that is attached to a fuel tank of an automobile or a two-wheeled vehicle and functions to communicate between the inside and outside of the tank in a valve-open state.
- the valve includes a first valve chamber communicating with the fuel tank, and a second valve chamber communicating with the first valve chamber and the outside on the first valve chamber.
- the first float In the first valve chamber, the first float is guided so as to move up and down so that the guide protrusion is inserted into a guide hole formed in the side wall of the valve chamber.
- the first float can be made relatively small in the vertical direction by such a guide method, and the vertical dimension of the entire valve is made compact.
- this valve raises the first float and closes the main connection passage with the second valve chamber when the fuel level reaches a height at which the fuel enters the first valve chamber, and the pressure in the tank is thereby increased.
- the fuel level in the feeler pipe is raised by the rise of the fuel pipe and the fuel tank sensor detects the first full tank.
- the first float since the first float is guided by the above method, the following two points are used. It had a problem. (1) Since the clearance between the side surface of the first float and the valve chamber side wall of the first valve chamber cannot be increased, the two vehicles come into contact with each other by traveling of the vehicle when the first float is lowered, and noise is likely to be generated. (2) When the first float is inclined, the first float may be squeezed into the valve chamber side wall of the first valve chamber and may not move.
- the main problem to be solved by the present invention is that, in this type of fuel tank valve device, the lower float valve that provides the first full detection while making the vertical dimension as compact as possible.
- the body, that is, the lower float body is made smooth.
- a valve device for a fuel tank is used by being attached to a fuel tank, A vent valve port communicating with the outside of the tank is provided at the upper part, and an inflow portion for fuel is provided below this, and the upper chamber and the lower chamber are separated by a partition formed between the vent valve port and the inflow portion.
- Case and An upper float body that is in the upper chamber of the case and is raised by the fuel flowing into the case and seated on the vent valve opening; It has a guide shaft protruding upward, and is inserted into the insertion portion formed in the partition wall so as to be vertically movable and supported in the lower chamber of the case, and is lifted by the fuel flowing into the case
- the upper float body is provided with a receiving hole in which the guide shaft of the lower float body is accommodated.
- the fuel level in the feeler pipe is raised by the pressure increase in the tank, and the fuel tank sensor detects the first full tank.
- the lower float body only closes the main communication portion, so that the internal pressure in the tank is lowered by ventilation through the vent valve port, and additional refueling becomes possible.
- the fuel level in the feeler pipe is raised again by the pressure increase in the tank, and the fuel tank sensor detects the final full tank.
- the fuel flows out from the upper chamber first, the upper float body descends and the vent valve port is opened, and then when the fuel level drops further, the lower float body descends and the main communication part Is released. Since the lower float body is supported through the guide shaft in the insertion part provided in the partition wall, a gap is formed between the side surface of the lower float body and the inner side surface of the lower chamber to prevent contact between them. be able to. In addition, since the upper float body is provided with the accommodation hole in which the guide shaft is accommodated, the vertical dimension of the valve device including the upper float body and the lower float body can be made as small as possible.
- the insertion portion provided in the partition wall is provided with sliding portions with respect to the guide shaft at least at the upper end side and the lower end side, the vertical movement of the lower float body is supported at at least two points up and down. Is smoothly performed without causing an inclination.
- the guide shaft is provided with a head at the upper end, and an engaging portion that allows passage of the guide shaft from below the head by elastic deformation is formed at the upper end of the insertion portion.
- the body can be easily and appropriately combined and supported by the partition wall in a suspended manner.
- the engaging portion of the insertion portion is constituted by an arm piece that protrudes sideways from the upper end of the base piece protruding upward and engages the protruding end with the head, the lower portion in the raised position
- the impact of the head that comes into contact with the arm piece from above when the float body is lowered can be absorbed by the elastic deformation of the arm piece to prevent the occurrence of a collision sound in this case.
- the portion of the upper part of the lower float body that is in contact with the partition wall at the time of ascent is covered with an elastic material, the lower float body abuts against the partition wall when the lower float body in the lowered position rises. The impact can be absorbed by the elastic sealing material as the elastic material to prevent the occurrence of a collision sound in this case.
- a valve device including a float body functioning as two upper and lower float valve bodies as compactly as possible, while providing the first full tank detection.
- the operation can be made smooth.
- FIG. 1 is a perspective view of a fuel tank valve device according to one embodiment of the present invention.
- FIG. 2 is a sectional view of the valve device, and specifically shows a state in which the fuel level in the tank does not reach the level of the inflow portion provided at the lower end of the valve device.
- FIG. 3 is a cross-sectional view of the valve device. Specifically, the state in which the fuel level in the tank has reached the level of the cylinder lower end of the inner cylinder portion serving as an inflow portion provided at the lower end of the valve device.
- Show. 4 is a sectional view of the valve device. Specifically, fuel is further supplied from the state shown in FIG. 3 so that fuel flows into the case constituting the valve device and the upper float body rises to raise the vent valve.
- FIG. 5 is a perspective view showing a part of the lower body constituting the case, with the lower float body in the lowered position.
- FIG. 6 is a perspective view showing a part of the lower body constituting the case, with the lower float body in the raised position.
- FIG. 7 shows the lower body constituting the case as viewed from above.
- FIG. 8 is a perspective view showing a modification example of a part of the configuration of the lower body and the lower float body.
- FIG. 9 is a partially broken perspective view of the modified example of FIG. 8, and the lower float body is in the lowered position.
- FIG. 10 is a partially broken perspective view of the modified example of FIG. 8, and the lower float body is in the raised position.
- the fuel tank valve device is attached to a fuel tank T such as an automobile or a two-wheeled automobile, and functions so as to communicate between the inside and outside of the tank when the valve is open.
- Such a valve device is typically attached to the upper part of the fuel tank T and constitutes a part of a connection passage (air passage E) to the fuel tank T.
- the valve device according to this embodiment uses the increase in the fuel liquid level due to the injection of the fuel F into the fuel tank T to cut off the communication inside and outside the tank, thereby increasing the pressure in the tank. It functions to raise the fuel level in the pipe and let the fuel gun sensor detect full tanks.
- the valve device firstly raises the lower float body 5 described later when the fuel level in the fuel tank T reaches a predetermined first level fa.
- the air passage E is squeezed, and the fuel level in a feeler pipe (not shown) is raised by an increase in the pressure in the fuel tank T, thereby causing the fuel gun sensor to detect the first full tank.
- the pressure in the fuel tank T is lowered by venting through the throttled air passage E to lower the fuel level in the feeler pipe. Allow additional lubrication.
- the valve device includes a case 1, an upper float body 3, and a lower float body 5.
- the case 1 includes a vent valve port 10 that communicates with the outside of the tank at the top, a fuel inflow portion 11 below the top, and a partition wall 12 formed between the vent valve port 10 and the inflow portion 11. It is divided into a chamber 13 and a lower chamber 14.
- the case 1 includes an upper body 15 and a lower body 16.
- the upper body 15 is configured to have a cylindrical shape.
- the upper end of the cylinder of the upper body 15 is closed by a top plate portion 15a having a circular vent valve port 10 at the center.
- a short cylindrical portion 15b is formed integrally with the top plate portion 15a so that the in-cylinder space communicates with the vent valve port 10 and protrudes upward from the top plate portion 15a.
- a seal ring 15c is fitted on the outside of the short tubular portion 15b.
- the lower end of the cylinder of the upper body 15 is open.
- the lower body 16 is configured to have a cylindrical shape in which both the upper and lower ends of the cylinder are opened. Between the upper and lower ends of the cylinder of the lower body 16, a partition wall 160 that divides the space in the lower body 16 in the vertical direction is formed. A circular through hole 161 a is formed at the center of the partition wall 160, and this through hole 161 a serves as a main communication portion 161 described later. In addition, through holes 162a serving as sub-communication portions 162 (described later) smaller than the through holes 161a are formed at both side positions sandwiching the through holes 161a.
- a disk-like body 163 having an outer diameter substantially equal to the hole diameter of the through hole 161a is directly above the through hole 121a of the partition wall 160, and the outer edge of the disk-like body 163 overlaps with the hole edge of the through hole 161a.
- a gap is provided between the lower surface of the disk-shaped body 163 and the upper surface of the partition wall 160 in the vertical direction.
- bridging pieces 164 extending between the disk-shaped body 163 and the partition wall 160 are provided at four positions at intervals in a direction around the center of the disk-shaped body 163, and the four bridging pieces 164.
- the disk-like body 163 is supported on the partition wall 160 as described above.
- the partition wall 12 is configured by the partition wall 160 and the disk-like body 163.
- the insertion part 165 includes an insertion hole 165a provided in a penetrating manner in the center of the disk-like body 163, and a cylindrical support part that protrudes upward from the upper surface of the disk-like body 163 so that the lower end of the cylinder communicates with the insertion hole 165a.
- the cylindrical support portion 165b is divided into four parts by providing a split groove extending from the upper end of the cylinder to the lower end of the cylinder at four positions with an interval in the direction around the cylinder axis. It functions as the elastic piece 165c.
- a plurality of protrusions 166, 166,... are formed on the upper surface of the disk-shaped body 163 at substantially equal intervals between adjacent protrusions 166 on a virtual circular arc surrounding the cylindrical support portion 165b.
- the lower ends of the springs are combined with the disk-like body 163 so that the projections 166, 166,...
- an inner cylindrical portion 167 is disposed below the partition wall 160 of the lower body 16.
- the inner cylinder portion 167 is integrally connected to the lower surface of the partition wall 160 so that the main communication portion 161 is positioned inside the cylinder upper end. Further, the lower end of the inner cylinder portion 167 is positioned at the same level as the lower end of the cylinder of the lower body 16.
- a cutout portion 168 that cuts off a part of the outer shell of the lower body 16 is formed at a position on the lower end side of the cylinder of the lower body 16 and immediately below the sub-communication portion 162.
- the notched portion 168 is opened at the lower end of the cylinder of the lower body 16, and the upper end of the notched portion 168 is located above the lower end of the tube of the inner cylindrical portion 167 and below the partition wall 12.
- the case 1 is configured by fitting the upper body 15 into the lower body 16 from the lower end side inside the portion above the partition wall 160 in the lower body 16.
- the case 1 configured as described above causes the lower end of the cylinder and the notched portion 168 of the lower body 16 to function as the inflow portion 11.
- the case 1 is combined with the flange 2 and is attached to the fuel tank T by the flange 2.
- the flange 2 has a head portion 20 and a cylindrical connecting portion 21 protruding downward from the head portion 20.
- the head 20 is integrally provided with a connecting pipe portion 22 protruding sideways, and the connecting pipe portion 22 communicates with the space in the cylindrical connecting portion 21 at the center of the head 20.
- This communication portion is surrounded by a circumferential rising portion 23 inside the flange 2.
- the upper case 1 is fitted inside the cylindrical connection portion 21 of the flange 2 so that the short cylindrical portion 15b of the upper body 15 is inserted into the circumferential rising portion 23 of the flange 2.
- the flange 2 and the case 1 are integrated.
- a space between the short cylindrical portion 15b of the upper body 15 and the circumferential rising portion 23 of the flange 2 is sealed in an airtight state by the seal ring 15c.
- the inside and outside of the tank are communicated with each other through the inflow portion 11, the vent valve port 10, and the connecting pipe portion 22 of the case 1.
- the case 1 is inserted from the outside into a mounting hole Ta opened in a fuel tank T of a size that does not allow the head 20 of the flange 2 to enter, and the head 20 of the flange 2 is placed in the fuel tank.
- the fuel tank T is provided by being welded or the like to the outer surface portion of the T.
- the upper float body 3 is in the upper chamber 13 of the case 1 and is raised by the fuel flowing into the case 1 and seated on the vent valve port 10. In a state in which no fuel flows into the upper chamber 13, the upper float body 3 is in a lowered position supported by the disk-like body 163 constituting the partition wall 12 of the lower body 16, and the vent valve port 10 is opened. (Fig. 2, Fig. 3)
- the upper float body 3 includes a float main body 30 including a top portion and a cylindrical side portion, a seal member 31 of the vent valve port 10, and a support member 32 of the seal member 31. And comprising.
- the support member 32 is configured to have a substantially disc shape with an engaging claw 32a protruding downward on the outer peripheral portion and a through hole 32b in the central portion.
- An engaged portion 30a to be engaged with an engaging claw 32a of the supporting member 32 is formed on the outer peripheral portion of the top portion of the float main body 30, and the supporting member 32 engages the engaging claw 32a with the engaged portion 30a. In this state, it is arranged on the top of the float main body 30.
- the seal member 31 has a disk shape with an outer diameter that closes the vent valve port 10 and has a fitting protrusion 31a for the through hole 32b of the support member 32 at the center of the lower portion, and the support member 32 has the fitting protrusion 31a. So that it is positioned directly below the vent valve port 10.
- the upper float body 3 is provided with an accommodation hole 33 in which a later-described guide shaft 50 of the lower float body 5 is accommodated.
- the accommodation hole 33 is formed in a recess 30 b formed in the center of the lower part of the float main body 30 of the upper float body 3.
- the recess 30b has a circular hole shape.
- a boss 30c protruding downward from the upper bottom of the recess 30b is formed in the recess 30b.
- the lower end of the boss 30c is positioned above the bottom of the cylinder of the upper float body 3, and the cylindrical support 165b and the protrusion 166 are moved into the recess 30b below the lower end of the boss 30c when the upper float 3 is lowered. 166... Fits in a row.
- the compression coil spring 4 is housed in the recess 30b in a compressed state so as to accommodate the boss 30c inside.
- the lower end of the spring 4 is in contact with the partition wall 160 of the lower body 16, and the upper end of the spring is in contact with the upper bottom of the recess 30 b, so that a certain upward force is applied to the upper float body 3 by the spring 4. It has become.
- the lower float body 5 has a guide shaft 50 protruding upward, and the guide shaft 50 is inserted into an insertion portion 165 formed in the partition wall 12 from the lower chamber 14 side of the case 1 so as to be movable up and down. 14 and supported by the fuel flowing into the case 1 to close the main communication portion 161 between the lower chamber 14 and the upper chamber 13 formed in the partition wall 12.
- the lower float body 5 includes a float main body 51 that is accommodated in the inner cylinder portion 167 of the lower case 1 so as to be movable up and down, and the guide shaft 50.
- the float main body 51 has a short cylindrical shape, and is accommodated in the inner cylindrical portion 167 so that its cylindrical axis is along the vertical direction.
- the upper end of the cylinder of the float main body 51 is closed and the lower end of the cylinder is opened.
- the outer diameter of the lower float body 5 is larger than that of the main communication portion 161 provided on the partition wall 160 constituting the partition wall 12.
- the guide shaft 50 has a head 50a at the upper end. Further, the outer diameter of the intermediate part 50c between the head part 50a and the base part 50b is made substantially equal to the inner diameter of the upper end of the cylindrical support part 165b constituting the insertion part 165, and the outer diameter of the base part 50b is made to be the head part. It is substantially equal to 50a and thicker than the intermediate part 50c, and is made substantially equal to the diameter of the insertion hole 165a constituting the insertion part 165.
- the lower float body 5 hooks the head 50a of the guide shaft 50 passed through the cylindrical support portion 165b through the insertion hole 165a to the upper end of the cylinder of the cylindrical support portion 165b.
- the ventilation inside and outside the tank is secured through the inflow part 11, the main communication part 161, the sub-communication part 162, and the vent valve port 10.
- the ventilation through the main communication portion 161 is performed between the side surface of the float main body 51 of the lower float body 5 and the inner surface of the inner cylinder portion 167, and the ventilation through the sub-communication portion 162 is performed through the notch portion 168. Ventilation through the mouth 10 is performed between the side of the float main body 30 of the upper float body 3 and the inner surface of the upper chamber 13. (FIG.
- the inner cylinder portion A gap can be formed between the inner surface of 167 and contact between the two can be prevented. Since the upper float body 3 is provided with the accommodation hole 33 in which the guide shaft 50 is accommodated, the vertical dimension of the valve device including the upper float body 3 and the lower float body 5 is made as small as possible. be able to.
- the insertion portion 165 provided in the partition wall 12 is provided with a sliding contact portion 165d with respect to the guide shaft 50 at least at the upper end side and the lower end side thereof.
- the base portion 50b of the guide shaft 50 is inserted into the insertion hole regardless of the position of the lower float body 5, that is, when the lower float body 5 is in the raised position for closing the main communication portion 161 or the lowered position.
- the intermediate portion 50c of the guide shaft 50 is slidably contacted with the inner side of the upper end of the cylindrical support portion 165b.
- an engaging portion 165e that allows passage from below the head portion 50a of the guide shaft 50 is formed at the upper end of the insertion portion 165 by elastic deformation.
- the cylindrical support portion 165b is constituted by four elastic pieces 165c... 165c, and when the guide shaft 50 is passed through the insertion portion 165 from below through the insertion holes 165a, the four elastic pieces 165c. After starting to bend outward, the head 50a is bent back and engaged with the head 50a at a position where the head 50a has come out from the upper end of the elastic piece 165c. That is, in the illustrated example, the upper end of the elastic piece 165c functions as the engaging portion 165e.
- the lower float body 5 can be easily and appropriately combined with the partition wall 12 and supported by the partition wall 12 in a suspended manner.
- At least a part of the engaging portion 165e of the insertion portion 165 is constituted by an arm piece 165g that protrudes sideways from the upper end of the base piece 165f protruding upward and engages the protruding end with the head 50a. ing. Further, at least the portion of the upper part of the lower float body 5 that is in contact with the partition wall 12 when being raised is covered with an elastic material.
- the two elastic pieces 165c at the opposing positions of the four elastic pieces 165c constituting the cylindrical support portion 165b constituting the insertion portion 165 are replaced with the base piece 165f and the arm piece 165g.
- the base piece 165f is positioned outside the elastic piece 165c, and a gap is formed between the base piece 165f and the guide shaft 50.
- the arm piece 165g protrudes inward from the upper end of the base piece 165f and is positioned at a position where the protruding end is engaged with the head 50a.
- the closed cylinder upper end of the float main body 51 is covered with a disk-like elastic sealing material 52 whose outer diameter is slightly smaller than the outer diameter of the lower float body 5.
- a through hole 52 a is formed at the center of the elastic seal material 52, and the elastic seal material 52 is attached to the upper end of the cylinder of the float main body 51 through the guide shaft 50 in the through hole 52 a.
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Abstract
Description
(1)第1フロートの側面と第1弁室の弁室側壁との間のクリアランスが大きくできないため、第1フロートの下降時に車両の走行により両者が接し合って異音を生じさせ易い。
(2)第1フロートに傾きが生じた場合、第1フロートが第1弁室の弁室側壁にかじりつき、可動しなくなるおそれがある。
タンク外と通じる通気弁口を上部に備え、これより下方に燃料の流入部を備えると共に、この通気弁口と流入部との間に形成された隔壁により上部室と下部室とに区分されたケースと、
ケースの上部室内にあってケース内に流入される燃料によって上昇して前記通気弁口に着座される上部フロート体と、
上方に突き出すガイド軸を有し、このガイド軸を前記隔壁に形成させた挿通部に上下動可能に挿通してケースの下部室内に支持されると共に、ケース内に流入される燃料によって上昇して前記隔壁に形成された下部室と上部室との主連通部を閉鎖する下部フロート体とを備えており、
前記上部フロート体には、下部フロート体のガイド軸の納まる収容孔が備えられているものとした。
2009年12月17日に出願された日本国特願2009-286400号の明細書、特許請求の範囲、図面及び要約書の全内容をここに引用し、本発明の明細書の開示として、取り入れるものである。
Claims (6)
- 燃料タンクに取り付け用いられる弁装置であって、
タンク外と通じる通気弁口を上部に備え、これより下方に燃料の流入部を備えると共に、この通気弁口と流入部との間に形成された隔壁により上部室と下部室とに区分されたケースと、
ケースの上部室内にあってケース内に流入される燃料によって上昇して前記通気弁口に着座される上部フロート体と、
上方に突き出すガイド軸を有し、このガイド軸を前記隔壁に形成させた挿通部に上下動可能に挿通してケースの下部室内に支持されると共に、ケース内に流入される燃料によって上昇して前記隔壁に形成された下部室と上部室との主連通部を閉鎖する下部フロート体とを備えており、
前記上部フロート体には、下部フロート体のガイド軸の納まる収容孔が備えられていることを特徴とする燃料タンク用弁装置。 - ガイド軸は上端に頭部を有すると共に、挿通部の上端には弾性変形により頭部の下方からの通過を許容する係合部が形成されていることを特徴とする請求項1に記載の燃料タンク用弁装置。
- 挿通部の係合部の少なくとも一部を、上方に突き出す基部片の上端から横向きに突き出して突き出し端を頭部に係合させる腕片から構成させていることを特徴とする請求項2に記載の燃料タンク用弁装置。
- 下部フロート体の上部における少なくとも上昇時に隔壁に当接される箇所が弾性材により覆われていることを特徴とする請求項1に記載の燃料タンク用弁装置。
- 挿通部は、少なくともその上端側と下端側とにそれぞれ、ガイド軸に対する摺接部を備えていることを特徴とする請求項1~請求項4のいずれか1項に記載の燃料タンク用弁装置。
- 少なくとも上部フロート体が上昇せず且つ下部フロート体が上昇しているときに、下部フロート体のガイド軸が上部フロート体の収容孔に納まるようになっていることを特徴とする請求項1に記載の燃料タンク用弁装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US13/514,486 US9783046B2 (en) | 2009-12-17 | 2010-12-09 | Valve device for fuel tank |
KR1020127016709A KR101409052B1 (ko) | 2009-12-17 | 2010-12-09 | 연료탱크용 밸브 장치 |
EP10837506.4A EP2514621B1 (en) | 2009-12-17 | 2010-12-09 | Fuel tank valve device |
CN201080056718.2A CN102656041B (zh) | 2009-12-17 | 2010-12-09 | 燃料箱用阀装置 |
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JP2009286400A JP5437784B2 (ja) | 2009-12-17 | 2009-12-17 | 燃料タンク用弁装置 |
JP2009-286400 | 2009-12-17 |
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US (1) | US9783046B2 (ja) |
EP (1) | EP2514621B1 (ja) |
JP (1) | JP5437784B2 (ja) |
KR (1) | KR101409052B1 (ja) |
CN (1) | CN102656041B (ja) |
WO (1) | WO2011074478A1 (ja) |
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JP5767947B2 (ja) * | 2011-11-11 | 2015-08-26 | 株式会社ニフコ | 燃料タンクの排気弁装置 |
JP5874601B2 (ja) * | 2012-10-31 | 2016-03-02 | 豊田合成株式会社 | 燃料遮断弁 |
CN103321798A (zh) * | 2013-06-25 | 2013-09-25 | 苏州圆能动力科技有限公司 | 一种设有隔离筒的防倾倒阀 |
CN103470831B (zh) * | 2013-09-23 | 2015-11-18 | 孙达立 | 一种溢流切断阀 |
JP6203205B2 (ja) * | 2014-05-09 | 2017-09-27 | 株式会社ニフコ | 弁装置 |
WO2016031726A1 (ja) * | 2014-08-25 | 2016-03-03 | 株式会社パイオラックス | 弁ケースの取付構造 |
JP6488121B2 (ja) * | 2014-12-18 | 2019-03-20 | 株式会社パイオラックス | 燃料タンク用弁装置 |
JP6520639B2 (ja) * | 2015-10-22 | 2019-05-29 | 京三電機株式会社 | 燃料タンク用通気制御弁 |
JP2017202804A (ja) * | 2016-05-13 | 2017-11-16 | 京三電機株式会社 | 燃料タンク用フロート弁、およびその製造方法 |
JP2020016210A (ja) * | 2018-07-27 | 2020-01-30 | 株式会社ニフコ | 燃料タンク用弁装置 |
JP6886434B2 (ja) * | 2018-07-27 | 2021-06-16 | 株式会社ニフコ | 燃料タンク用弁装置 |
DE102019104333A1 (de) * | 2019-02-20 | 2020-08-20 | Röchling Automotive SE & Co. KG | Kfz-Flüssigkeitstank mit integriertem Schwimmerventil |
JP7138610B2 (ja) * | 2019-10-10 | 2022-09-16 | 株式会社ニフコ | 燃料タンク用弁装置 |
JP2023070221A (ja) * | 2021-11-09 | 2023-05-19 | 株式会社パイオラックス | 満タン規制バルブ |
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CN102656041A (zh) | 2012-09-05 |
US9783046B2 (en) | 2017-10-10 |
US20160243932A1 (en) | 2016-08-25 |
EP2514621A4 (en) | 2014-05-14 |
KR101409052B1 (ko) | 2014-06-18 |
EP2514621B1 (en) | 2019-04-10 |
JP2011126414A (ja) | 2011-06-30 |
CN102656041B (zh) | 2016-03-30 |
EP2514621A1 (en) | 2012-10-24 |
JP5437784B2 (ja) | 2014-03-12 |
KR20120089762A (ko) | 2012-08-13 |
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