WO2012049999A1 - 弁装置 - Google Patents
弁装置 Download PDFInfo
- Publication number
- WO2012049999A1 WO2012049999A1 PCT/JP2011/072774 JP2011072774W WO2012049999A1 WO 2012049999 A1 WO2012049999 A1 WO 2012049999A1 JP 2011072774 W JP2011072774 W JP 2011072774W WO 2012049999 A1 WO2012049999 A1 WO 2012049999A1
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- WIPO (PCT)
- Prior art keywords
- hole
- valve
- support plate
- case
- pressure
- Prior art date
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Classifications
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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
- 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
- F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
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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
- B60K15/01—Arrangement of fuel conduits
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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
- B60K15/077—Fuel tanks with means modifying or controlling distribution or motion of fuel, e.g. to prevent noise, surge, splash or fuel starvation
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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
- F16K24/06—Devices, e.g. valves, for venting or aerating enclosures for aerating only
-
- 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
Definitions
- the present invention relates to a valve device which is attached to a fuel tank of an automobile or the like, can adjust the pressure in the fuel tank, and can perform external leakage of fuel and full tank control of fuel supply fuel.
- a cut valve that prevents liquid fuel in the fuel tank from leaking out of the fuel tank or when the pressure in the fuel tank rises
- a check valve that prevents the fuel tank from collapsing by allowing outside air to flow in from the outside of the fuel tank
- a full tank regulating valve or the like for stopping the refueling at the upper limit value of the refueling amount during refueling is attached.
- These valves may be provided separately.
- a valve in which a cut valve and a check valve are integrated is also used.
- a float case is accommodated, a main body case in which a vent hole that is opened and closed by the float valve is formed in an upper wall, and a top case of the main body case are fitted and communicated with the vent hole.
- a first spring that abuts and biases the check valve toward the vent of the upper wall, and the engagement piece is enlarged by a predetermined diameter or more by the inner periphery of the upper case.
- the cap is engaged with the cap
- Check valved cut valve characterized in that it is held so as not deviated from is disclosed.
- the check valve introduces outside air when the pressure in the fuel tank rises above a predetermined value, and a positive pressure valve that discharges fuel vapor to the outside, and when the pressure in the fuel tank falls below the predetermined value. And a negative pressure valve.
- the positive pressure valve has a cylindrical body having a structure in which a hole is provided in the center of the lower surface and the upper surface forms a receiving surface for receiving the lower end of the first spring, and an opening is provided in the center.
- the main body is disposed inside the main body, biased upward via a second spring, and is disposed so as to normally close the opening of the main body.
- valve device of Patent Document 1 has the following problems. This will be described with reference to a graph showing the relationship between the pressure and the flow rate in the valve device shown in FIG.
- the vertical axis in the figure represents the flow rate of the gas flowing out from the inside of the fuel tank, and when this is positive, it means that the gas inside the fuel tank is flowing out, and when this is negative, It means that gas flows into the fuel tank from the outside.
- the horizontal axis represents the pressure in the fuel tank. If this is positive, the pressure in the fuel tank is higher than the external pressure. If this is negative, the pressure in the fuel tank is lower than the external pressure. Represents.
- the check valve is closed and the gas flows out.
- the fuel tank is continuously maintained in a slightly negative pressure state or a slightly pressurized state with respect to the external air pressure. As a result, a constant load is applied to the fuel tank, which shortens its life.
- an object of the present invention is to prevent the fuel tank from being continuously maintained in a slightly negative pressure state with respect to the external air pressure, or in a state where a predetermined pressure is applied (positive pressure state).
- an object of the present invention is to provide a valve device that can prevent deterioration of the fuel tank.
- the valve device of the present invention accommodates a float valve, and has a first through hole formed in the upper wall that is opened and closed by the float valve, and is erected on the outer periphery of the first through hole of the upper wall.
- a main body case having a cylindrical tube portion, a joint member that is joined to the upper portion of the main body case and communicates with the first through-hole, and is protruded from the outer wall; and is accommodated in the tube portion.
- a pressure regulating valve disposed in the first through hole so as to be able to contact and separate from above, and urged in a direction to close the first through hole by a spring disposed at an upper portion, the pressure regulating valve being An outer case having a peripheral edge portion that opens and closes to the first through-hole and a second through-hole formed therein, and a ceiling wall that is fixed to an upper opening portion of the outer case; A peripheral wall extending downward from the inner surface of the ceiling wall, An inner case in which a third through hole is formed inside the peripheral wall and a fourth through hole is formed in the peripheral wall, a support plate attached to the lower surface of the peripheral wall of the inner case, and the inner case in the inner case.
- auxiliary valve body that is slidable up and down so as to be in contact with and away from the three through holes, and is normally supported on the support plate by its own weight, and the peripheral wall of the outer case and the peripheral wall of the inner case.
- it has a flow path for communicating the second through hole of the outer case and the fourth through hole of the inner case.
- a rib for supporting the auxiliary valve body in a floating state from the upper surface of the support plate is formed on the upper surface of the support plate.
- the ribs of the support plate extend radially from the center of the support plate, and the gap between the adjacent ribs is arranged so as to be aligned with the fourth through hole of the inner case. It is preferable that
- valve device of the present invention it is preferable that a portion of the rib of the support plate located at the center of the support plate protrudes at a predetermined height.
- a plurality of protrusions are formed on the auxiliary valve body toward the support plate.
- the float valve when the fuel in the fuel tank rises, the float valve floats, and when the fuel level exceeds a predetermined height, the float valve closes the first through hole and the liquid fuel passes through the first through hole. To prevent the liquid fuel from leaking out of the fuel tank.
- the float valve is lowered and separated from the first through hole.
- the pressure regulating valve is biased by the spring and closes the first through hole, but the inside of the fuel tank is a joint member through the second through hole, the fourth through hole, and the third through hole. It communicates with the inside.
- fuel tank is less than a predetermined positive pressure, fuel vapor or the like enters the joint member through the second through hole, the fourth through hole and the third through hole of the pressure regulating valve, and is connected through the connecting pipe. It is sent to the canister through a steam pipe connected to the pipe. For this reason, it can prevent that a pressure is continuously added to a fuel tank, and can suppress deterioration of a fuel tank.
- the support plate is mounted on the lower surface of the peripheral wall of the inner case, the fuel vapor or the like flowing from the second through hole of the outer case collides with the support plate and can weaken its momentum. After that, it flows into the inner case through the fourth through hole and is not directly blown onto the lower surface of the auxiliary valve body. For example, fuel vapor or the like is instantaneously blown from the second through hole.
- the sensitive reaction of the auxiliary valve element is suppressed, and the auxiliary valve element can be moved up and down stably.
- the auxiliary valve body when the pressure in the fuel tank is reduced with respect to the external pressure, the auxiliary valve body is lowered by its own weight, and the third through hole is opened. It is possible to prevent outside air from flowing into the fuel tank through the three through holes, the fourth through hole, the second through hole, and the first through hole, and maintaining the fuel tank in a negative pressure state. For this reason, it can prevent that the inside of a fuel tank is maintained under a negative pressure state for a long time, and can suppress degradation of a fuel tank. Further, it is possible to eliminate the possibility that the fuel tank becomes a strong negative pressure and the fuel tank is recessed.
- the first through hole is completely closed by the pressure regulating valve. In general, it does not last so long, and when the pressure is further increased, the pressure adjustment valve floats against the urging force of the spring, and a large amount of fuel vapor or the like flows into the joint member, or the pressure drops and the auxiliary valve body
- the fuel tank returns to a state where it is communicated with the joint member through the second through hole, the fourth through hole, and the third through hole, so that a predetermined pressure is applied (positive pressure state), It can be prevented from being continuously maintained for a long time.
- FIG. 5 is a perspective cross-sectional view of the same pressure regulating valve with the outer case broken. It is sectional drawing which shows the shape of the auxiliary valve body and support plate in the valve apparatus. It is a side view of an inner case and a support plate of the pressure regulating valve. It is sectional drawing of the valve apparatus.
- FIG. 4 is a partial cross-sectional view of the valve device in a state where the inside of the fuel tank is less than a predetermined positive pressure or in a negative pressure state.
- FIG. 5 is a partial cross-sectional view of the valve device in a state where the fuel tank has a predetermined positive pressure and the auxiliary valve body is raised.
- FIG. 10 is a partial cross-sectional view of the valve device in a state in which the pressure in the fuel tank is higher than that in the case illustrated in FIG. 9 and the entire pressure regulating valve is raised. It is a graph which shows the relationship between the pressure and flow volume in the valve apparatus which concerns on this invention, and the conventional valve apparatus. In the same valve device, it is a sectional view showing other shapes of an auxiliary valve body and a support plate.
- the present invention is applied to a check valve integrated cut valve in which a cut valve for preventing leakage of fuel to the outside of the fuel tank and a check valve for adjusting the pressure in the fuel tank are integrated. is there.
- the present invention can also be applied to a valve device in which a full tank regulating valve and a check valve are integrated.
- the valve device 10 includes a main body case 20, a float valve 30 accommodated in the main body case 20, a float valve spring 35 that urges the float valve 30 upward, and a main body.
- a bottom case 40 mounted on the lower surface of the case 20, a joint member 100 joined to the upper part of the main body case 20, a pressure regulating valve 50 disposed in the joint member 100, and the pressure regulating valve urged downward And a regulating valve spring 58.
- the adjusting valve spring 58 constitutes a “spring” in the present invention.
- the main body case 20 has a cylindrical peripheral wall 21 and an upper wall 23 that closes the upper side thereof.
- a first through hole 23a is formed at the center of the upper wall 23, and a valve seat 23b to which the valve head 31 of the float valve 30 contacts and separates is formed at the periphery of the lower surface thereof.
- a cylindrical tube portion 27 is erected on the upper surface of the upper wall 23 and on the outer periphery of the first through hole 23a.
- a total of four engaging pieces 27 a are provided upright at predetermined intervals on the upper end portion of the cylindrical portion 27, two facing each other in the circumferential direction.
- a flange portion 26 is provided on the outer periphery of the upper wall 23, and a plurality of insertion holes 23c are formed at predetermined locations along the circumferential direction of the base portion of the flange portion 26, corresponding to the lower portion of the insertion hole 23c.
- an engaging claw 21a is formed on the outer periphery of the peripheral wall 21, on the outer periphery of the peripheral wall 21, an engaging claw 21a is formed.
- An annular wall 29 protrudes from the upper surface of the upper wall 23 on the outer periphery of the cylindrical portion 27 via an annular groove 28 (see FIG. 7). Further, engaging claws 21b are formed on the outer periphery of the lower portion of the peripheral wall 21 at predetermined intervals along the circumferential direction.
- the bottom case 40 has a peripheral wall 41 and a bottom wall 42.
- the upper end of the peripheral wall 41 is slightly enlarged in diameter, and engagement holes 41a are formed at predetermined intervals along the circumferential direction at the base of the enlarged diameter part. ing.
- the float valve 30 is placed on the bottom wall 42 of the bottom case 40 via the float valve spring 35, and the bottom case 40 is assembled to the lower outer periphery of the peripheral wall 21 of the main body case 20.
- the bottom case 40 is attached to the main body case 20 by fitting the joint claw 21 b into the engagement hole 41 a of the bottom case 40.
- the float valve spring 35 is compressed by its own weight, and the float valve 30 is normally in contact with the bottom wall 42 of the bottom case 40. However, the fuel in the fuel tank rises and the float valve 30 When immersed to a predetermined height, buoyancy is added to the urging force of the float valve spring 35, the float valve 30 is raised, and the first through hole 23a of the upper wall 23 of the main body case 20 is closed.
- the first through hole 23 a is disposed so as to be able to contact and separate from above, and a first adjustment valve spring 58 is disposed on the upper portion thereof.
- a pressure regulating valve 50 urged in a direction to close the through hole 23a is accommodated.
- a lid 90 is placed on the upper portion of the cylindrical portion 27 to hold down the upper end of the adjusting valve spring 58.
- the lid 90 has a substantially circular upper wall 91 and a peripheral wall 93 extending from the periphery of the upper wall 91, and the lower edge of the peripheral wall 93 is cut out at two opposing locations.
- the formed fifth through hole 93a is formed, and engaging stepped portions 93b and 93b are formed at upper corners on both sides of the fifth through hole 93a, respectively. Then, by engaging the engagement pieces 27a and 27a erected from the upper end of the tube portion 27 with the engagement step portions 93b and 93b, the lid body 90 is mounted on the upper portion of the tube portion 27. Yes.
- the fifth through-hole 93a is opened in a state in which the lid 90 is attached to the cylindrical portion 27 so that the inside and the outside of the cylindrical portion 27 are communicated.
- the joint member 100 joined to the upper part of the main body case 20 has a cylindrical shape in which the upper part is closed and the lower part is opened, and a cylindrical case 101 that houses the cylindrical part 27 of the main body case 20, and a lower outer periphery of the cylindrical case 101 And a plate portion 103 provided with an annular welded portion 103a welded to the periphery of the attachment hole Ta (see FIG. 7) of the fuel tank T.
- a connecting pipe 105 for connecting a pipe connected to a canister (not shown) protrudes from the outer periphery of the cylindrical case 101.
- the connecting pipe 105 communicates with the internal space of the cylindrical case 101 and also communicates with a first through hole 23 a provided in the main body case 20.
- annular rib 104 inserted into the annular groove 28 of the main body case 20 is formed on the lower surface of the plate portion 103. Further, a plurality of frame-like engagement pieces 103b that engage with the engagement claws 21a of the main body case 20 are provided at a predetermined interval in the circumferential direction further outward than the annular rib 104 on the lower surface of the plate portion 103. It is installed vertically.
- the seal ring R is attached to the outer periphery of the annular rib 104 of the joint member 100, the annular rib 104 on the lower surface of the plate portion 103 is inserted into the annular groove 28 of the main body case 20, and the engagement piece 103b of the joint member 100 is By engaging with the engaging claw 21 a through the insertion hole 23 c of the main body case 20, the joint member 100 is attached to the upper portion of the main body case 20 via the seal ring R.
- the pressure regulating valve 50 includes an outer case 51, an inner case 60 attached to the outer case 51, a support plate 70 attached below the inner case 60, and the inner case 60. And an auxiliary valve body 80 accommodated therein so as to be slidable up and down.
- the outer case 51 is formed on a cylindrical peripheral wall 52 that opens upward, an annular bottom surface 53 provided on the lower end surface of the peripheral wall 52, and an inner periphery of the bottom surface 53.
- a cylindrical peripheral portion 54 having a second through hole 54a at the center of the lower end, and bulging downward, forming a curved surface and reducing the diameter. This is a portion that is in contact with and away from the periphery of the upper surface of the hole 23a (see FIGS. 7 to 10).
- an enlarged diameter wall portion 52 a is provided on the upper outer periphery of the peripheral wall 52.
- the inner case 60 is disposed in the enlarged-diameter wall portion 52a of the outer case 51 and is fixed to the upper opening of the outer case 51 by welding or the like, and from the lower surface periphery of the ceiling wall 61. It has a cylindrical peripheral wall 63 extending downward.
- a third through hole 61a is formed in the center of the ceiling wall 61, and a lower end portion of the adjustment valve spring 58 is provided on the upper surface of the ceiling wall 61 and on the outer peripheral edge of the third through hole 61a.
- a spring support recess 61b for supporting is formed.
- a plurality of fourth through holes 64 are formed at the lower end portion of the peripheral wall 63 at equal intervals in the circumferential direction.
- four fourth through holes 64 are formed.
- a notch-shaped fitting recess 65 is formed between the adjacent fourth through holes 64 and 64 at the lower end edge of the peripheral wall 63.
- four fitting recesses 65 are formed at equal intervals in the circumferential direction at the lower end edge of the peripheral wall 63 corresponding to the four fourth through holes 64.
- an insertion hole 66 is formed above and aligned with the fitting recess 65 of the peripheral wall 63.
- protrusions 67 extending in the axial direction are provided on the inner surface of the peripheral wall 63 at equal intervals in the circumferential direction, and serve as a guide for vertical sliding of the auxiliary valve body 80.
- a support plate 70 is attached to the lower surface of the peripheral wall 63 of the inner case 60. As shown in FIGS. 2 and 3, the support plate 70 is formed in a disc shape and is provided upright on a closing portion 71 that closes a lower opening portion of the peripheral wall 63 and an upper surface 71 a of the closing portion 71. And a rib 74 for supporting the body 80 in a floating state. In this embodiment, the ribs 74 are formed to extend radially from the center of the closing portion 71 outward at an equal angle, and have a substantially cross shape as a whole.
- the radial tip 74a of the rib 74 reaches the outer peripheral edge of the closing part 71 and widens along the circumferential direction of the closing part 71, and the insertion claw 75 extends from the tip 74a to the outside of the closing part 71.
- a support claw 76 protruding from the outer peripheral edge of the closing part 71 is provided on the lower surface of the closing part 71 at a position aligned with the insertion claw 75 with a uniform spacing in the circumferential direction.
- a cross-shaped projecting portion 77 is formed at a predetermined height on a portion of the radially formed rib 74 located at the center of the support plate 70.
- the auxiliary valve body 80 is inserted into the inner case 60, the support plate 70 is disposed on the lower surface of the inner case 60, and the support plate 70 is pushed in while expanding the peripheral wall 63 of the inner case 60.
- the support plate 70 is mounted below the inner case 60 by being inserted into the insertion hole 66 of the inner case 60 and inserting the support claw 76 into the fitting recess 65 of the inner case 60.
- the gap S between the adjacent ribs 74 and 74 is arranged in alignment with the fourth through hole 64 of the inner case 60 (see FIGS. 2 and 3), and the inner and outer sides of the inner case 60 define the fourth through hole 64. It is designed to communicate with each other (see FIG. 8).
- the four ribs 74 are provided radially.
- three ribs 74 may be provided radially, five or more ribs 74 may be provided radially, and a plurality of ribs 74 may be provided.
- the ribs 74 may be arranged vertically and horizontally to form a lattice, and various forms can be adopted.
- the auxiliary valve body 80 is accommodated in the inner case 60 so as to be vertically slidable so as to be in contact with and separated from the third through hole 61a, and is always supported on the support plate 70 by its own weight.
- the auxiliary valve body 80 has a cylindrical shape in which the lower part is opened and the upper part is substantially spherical and closed. Specifically, a disc-shaped head 81 and a contact / separation portion that expands in a spherical shape downward from the periphery of the head 81 and contacts and separates from the inner periphery of the third through hole 61a. 83 and a cylindrical body portion 85 that hangs downward from the periphery of the contact / separation portion 83.
- the auxiliary valve body 80 When the auxiliary valve body 80 is placed on the support plate 70 by its own weight, the auxiliary valve body 80 abuts on the rib 74 of the support plate 70 and is supported in a state of floating from the upper surface 71a of the support plate 70. A gas inflow space is formed between the support plate 70 and the support plate 70 (see FIG. 8).
- the auxiliary valve body 80 When the inside of the fuel tank T is less than a predetermined positive pressure, the auxiliary valve body 80 is lowered by its own weight to open the third through hole 61a (see FIG. 8), and the pressure in the fuel tank T is increased.
- the auxiliary valve body 80 is not limited to the above shape, and may be a hemispherical shape, a conical shape, a circular plate shape, or the like. Further, in this embodiment, a rib 74 is provided on the support plate 70 side that supports the auxiliary valve body 80 to support the auxiliary valve body 80 in a floating state. However, as shown in FIG. A plurality of protrusions 87 extending toward the support plate 70a at equal intervals in the circumferential direction from the outer periphery of the lower end of 80a may be provided and supported in a state of floating from the upper surface of the support plate 70a. In this case, the rib 74 is not necessary for the support plate 70a.
- the ceiling wall 61 of the inner case 60 is disposed in the enlarged wall portion 52a of the outer case 51, and is fixed to the upper opening of the outer case 51 by welding or the like.
- a flow path 68 is formed between the peripheral wall 63 of the inner case 60 and the inner periphery of the outer case 51.
- the flow path 68 communicates with a second through hole 54 a formed in the lower surface of the outer case 51 and communicates with a fourth through hole 64 formed in the peripheral wall of the inner case 60.
- the pressure regulating valve 50 is accommodated in the cylindrical portion 27 of the main body case 20 so as to be vertically slidable, and is disposed in the first through hole 23a of the main body case 20 so as to be able to contact and separate from above.
- the adjustment valve spring 58 disposed on the upper side is biased in a direction to close the first through hole 23a.
- the valve device 10 has a lower half portion inserted into the mounting hole Ta of the fuel tank T, and an annular welded portion 103 a of the joint member 100 is welded to the front side periphery of the mounting hole Ta. , Attached to the fuel tank T.
- the fuel vapor flowing into the inner case 60 flows out from the third through hole 61a through the inner case 60 inner surface and the outer periphery of the auxiliary valve body 80 (the gap between the protrusions 67 shown in FIG. 5). Further, it flows into the joint member 100 through the fifth through hole 93a, and is sent to the canister through the connection pipe 105 and the steam pipe. For this reason, when the inside of the fuel tank T is less than a predetermined positive pressure, it is possible to prevent the pressure from being continuously applied to the fuel tank T, and to suppress the deterioration of the fuel tank T.
- the pressure in the fuel tank T in this state is set so as to be a pressure required to perform fuel full tank regulation at the time of refueling. That is, when the fuel is full during refueling and the pressure in the fuel tank T rises, the fuel tank T is completely closed by being in the above state that is higher than X1 and lower than X1 + X2 with respect to the outside air pressure. Thus, full tank regulation can be performed reliably.
- the auxiliary valve body 80 is supported by the rib 74 provided on the upper surface 71a of the closing portion 71 of the support plate 70 so as to float from the upper surface 71a. It is possible to easily introduce the fuel vapor flowing into the auxiliary valve body 80 between the support plate 70 and the responsiveness when the auxiliary valve body 80 operates. Further, by adjusting the height of the rib 74, the support height of the auxiliary valve body 80 can be deformed, and the closing timing of the third through hole 61a can be adjusted as appropriate.
- the auxiliary valve body 80 can be supported in a state of floating from the support plate 70, and the fourth through hole 64.
- the fuel vapor flowing into the inner case 60 from the inside can be introduced between the auxiliary valve body 80a and the support plate 70, and the responsiveness during operation of the auxiliary valve body 80a can be enhanced.
- the support height of the auxiliary valve body 80a can be changed, and thereby the closing timing of the third through hole 61a can be adjusted.
- the ribs 74 on the upper surface of the support plate 70 extend radially from the center of the support plate 70 and are arranged so that the gap S between the adjacent ribs 74 and the ribs is aligned with the fourth through hole 64 of the inner case 60.
- the fuel vapor flowing into the inner case 60 from the fourth through hole 64 collides with the radial ribs 74, so that the flow direction of the fuel vapor is effective toward the auxiliary valve body 80. Therefore, the responsiveness of the auxiliary valve body 80 can be further improved.
- the protrusion 77 protrudes at a predetermined height from the portion of the rib 74 of the support plate 70 located at the center of the support plate 70, the height of the rib 74 at the portion where the fuel vapor collides is increased.
- the flow direction of the fuel vapor flowing into the inner case 60 can be more reliably changed to the auxiliary valve body side.
- the protrusion 77 of the rib 74 enters the inside thereof to guide the vertical slide operation of the auxiliary valve body 80. be able to.
- FIG. 11 the operation in a state where the pressure in the fuel tank T is in the state of X1 + X2 + X3, which is higher than X1 + X2 with respect to the external air pressure, will be described.
- the pressure in the fuel tank T surpasses the urging force of the adjustment valve spring 58 and the weight of the pressure adjustment valve 50, and the entire pressure adjustment valve 50 is pushed up. Therefore, the first through hole 23a of the main body case 20 is opened, and a large amount of fuel vapor or the like in the fuel tank T flows into the joint member 100 and is sent to a canister or the like (not shown) through the connection pipe 105. Therefore, the pressure in the fuel tank T can be quickly reduced to prevent the fuel tank T from being damaged by the high pressure.
- FIG. 11 the operation when the pressure in the fuel tank T is lower than the external air pressure and becomes the state of X4 will be described.
- the auxiliary valve body 80 is placed on the support plate 70 by its own weight.
- the third through hole 61a is opened.
- the outside air introduced through the canister or the like passes from the connection pipe 105 through the joint member 100, through the through hole 93a of the lid 90, and from the third through hole 61a to the inner surface of the inner case 60 and the auxiliary valve body 80. It passes between the outer peripheries (gap between the ridges 67 shown in FIG.
- Valve apparatus 20 Main body case 23 Upper wall 23a 1st through-hole 27 Cylindrical part 30 Float valve 50 Pressure adjustment valve 51 Outer case 52 Perimeter wall 53 Bottom face 54 Peripheral part 54a Second through-hole 58 Adjustment valve spring (spring) 60 Inner case 61 Ceiling wall 61a 3rd through-hole 63 Peripheral wall 64 4th through-hole 68 Flow path 70, 70a Support plate 74 Rib 77 Protruding part 80, 80a Auxiliary valve body 100 Joint member 105 Connection pipe
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
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Abstract
Description
20 本体ケース
23 上壁
23a 第1通孔
27 筒部
30 フロート弁
50 圧力調整弁
51 外ケース
52 周壁
53 底面
54 周縁部
54a 第2通孔
58 調整弁用スプリング(スプリング)
60 内ケース
61 天井壁
61a 第3通孔
63 周壁
64 第4通孔
68 流路
70,70a 支持板
74 リブ
77 突出部
80,80a 補助弁体
100 継手部材
105 接続管
Claims (5)
- フロート弁を収容すると共に、上壁に該フロート弁によって開閉される第1通孔が形成され、同上壁の第1通孔外周に立設された円筒状の筒部を有する本体ケースと、
この本体ケースの上部に接合され、前記第1通孔に連通する接続管が外壁に突設された継手部材と、
前記筒部内に収容されて、前記第1通孔に上方から接離可能に配置され、上部に配置されたスプリングにより前記第1通孔を塞ぐ方向に付勢された圧力調整弁とを備え、
前記圧力調整弁は、上方が開口すると共に底面に前記第1通孔に接離する周縁部とその内側に形成された第2通孔とを有する外ケースと、
同外ケースの上方の開口部に固着される天井壁及びこの天井壁内面から下方に延出された周壁を有し、前記天井壁の前記周壁の内側に第3通孔が形成され、前記周壁に第4通孔が形成された内ケースと、
この内ケースの前記周壁の下面に装着される支持板と、
前記内ケース内に前記第3通孔に接離するように上下スライド可能に収容され、常時は自重によって前記支持板上に支持される補助弁体と、
前記外ケースの周壁と前記内ケースの周壁との間に設けられた、前記外ケースの第2通孔と前記内ケースの第4通孔とを連通させる流路と
を有していることを特徴とする弁装置。 - 前記支持板の上面には、支持板の上面から補助弁体を浮かせた状態に支持するリブが形成されている請求項1記載の弁装置。
- 前記支持板のリブは、該支持板の中心から放射状に伸びると共に、隣り合うリブとリブとの間隙が、前記内ケースの第4通孔に整合するように配置されている請求項2記載の弁装置。
- 前記支持板のリブの、支持板中央に位置する部分が、所定高さで突出している請求項2又は3記載の弁装置。
- 前記補助弁体には、前記支持板側に向けて複数の突起が形成されている請求項1~4のいずれか1つに記載の弁装置。
Priority Applications (3)
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JP2012538636A JP5421463B2 (ja) | 2010-10-13 | 2011-10-03 | 弁装置 |
CN201180049369.6A CN103153670B (zh) | 2010-10-13 | 2011-10-03 | 阀装置 |
KR1020137009379A KR101875815B1 (ko) | 2010-10-13 | 2011-10-03 | 밸브장치 |
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JP2010-230203 | 2010-10-13 | ||
JP2010230203 | 2010-10-13 |
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WO2012049999A1 true WO2012049999A1 (ja) | 2012-04-19 |
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PCT/JP2011/072774 WO2012049999A1 (ja) | 2010-10-13 | 2011-10-03 | 弁装置 |
Country Status (4)
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JP (1) | JP5421463B2 (ja) |
KR (1) | KR101875815B1 (ja) |
CN (1) | CN103153670B (ja) |
WO (1) | WO2012049999A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014080870A (ja) * | 2012-10-12 | 2014-05-08 | Kyosan Denki Co Ltd | 通気制御弁装置 |
JP2015067033A (ja) * | 2013-09-27 | 2015-04-13 | 三菱自動車工業株式会社 | 車両の燃料タンク装置 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106882036B (zh) * | 2015-12-16 | 2021-09-10 | 现代自动车株式会社 | 用于车辆的燃料箱的翻转阀 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001248743A (ja) * | 2000-03-02 | 2001-09-14 | Toyoda Gosei Co Ltd | チェック弁 |
JP2004044431A (ja) * | 2002-07-10 | 2004-02-12 | Nifco Inc | 燃料タンクの圧力調整バルブ |
JP2004052564A (ja) * | 2002-07-16 | 2004-02-19 | Nifco Inc | 燃料タンクの圧力調整バルブ |
JP2009168133A (ja) * | 2008-01-16 | 2009-07-30 | Piolax Inc | チェックバルブ一体型カットバルブ |
-
2011
- 2011-10-03 WO PCT/JP2011/072774 patent/WO2012049999A1/ja active Application Filing
- 2011-10-03 CN CN201180049369.6A patent/CN103153670B/zh active Active
- 2011-10-03 JP JP2012538636A patent/JP5421463B2/ja active Active
- 2011-10-03 KR KR1020137009379A patent/KR101875815B1/ko active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001248743A (ja) * | 2000-03-02 | 2001-09-14 | Toyoda Gosei Co Ltd | チェック弁 |
JP2004044431A (ja) * | 2002-07-10 | 2004-02-12 | Nifco Inc | 燃料タンクの圧力調整バルブ |
JP2004052564A (ja) * | 2002-07-16 | 2004-02-19 | Nifco Inc | 燃料タンクの圧力調整バルブ |
JP2009168133A (ja) * | 2008-01-16 | 2009-07-30 | Piolax Inc | チェックバルブ一体型カットバルブ |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014080870A (ja) * | 2012-10-12 | 2014-05-08 | Kyosan Denki Co Ltd | 通気制御弁装置 |
JP2015067033A (ja) * | 2013-09-27 | 2015-04-13 | 三菱自動車工業株式会社 | 車両の燃料タンク装置 |
Also Published As
Publication number | Publication date |
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CN103153670B (zh) | 2016-01-27 |
KR20130140670A (ko) | 2013-12-24 |
CN103153670A (zh) | 2013-06-12 |
JPWO2012049999A1 (ja) | 2014-02-24 |
JP5421463B2 (ja) | 2014-02-19 |
KR101875815B1 (ko) | 2018-07-06 |
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