• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A vehicle expansion tank sealing (1), a sealing assembly (17), a vehicle expansion tank (31) and a vehicle (41) are provided. The sealing (1) comprises a substantially discshaped portion (3) with a thickness (t) between a first side (5) and a second side (7) in an axial direction (A), a radius (r) in a radial direction (R) and an axial sealing surface (9) arranged at a peripheral part (10) of the first side (5). The sealing (1) further comprises a centre portion (11) which protrudes a predetermined distance (d) from the disc-shaped portion (3) on the first side (5) in the axial direction (A) radially inwards of the axial sealing surface (9), and in that the centre portion (11) comprises at least one peripheral flange (13) which extends in the radial direction (R), the at least one peripheral flange (13) comprising a radial sealing surface (15).
    公开号:SE1651127A1
    申请号:SE1651127
    申请日:2016-08-23
    公开日:2018-02-24
    发明作者:Mustonen Markus；Kardos Zoltan；Hult Johanna
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    VEHICLE EXPANSION TANK SEALING, SEALING ASSEMBLY, VEHICLEEXPANSION TANK AND VEHICLE WITH EXPANSION TANK TECHNICAL FIELD Embodiments herein relate to a vehicle expansion tank sealing. Embodiments hereinfurther relate to a vehicle expansion tank sealing assembly, to a vehicle expansion tankand to a vehicle comprising a vehicle expansion tank.
    BACKGROUND Vehicles, such as trucks, may comprise a coolant system for cooling e.g. an internalcombustion engine and/or a passenger compartment thereof. Such system typicallycomprises a radiator with a cooling fan, a water pump, a thermostat, hoses and a coolantexpansion tank. A cooling fluid is, via the pump and hoses of the coolant system,circulated through the radiator and a temperature of the fluid is decreased by an air flowthrough the radiator. The radiator may also comprise a cooling fan for increasing the airflow through the radiator. The cooled fluid may then cool the internal combustion engine.
    A temperature of the fluid or coolant may vary e.g. in dependence to an ambienttemperature and the amount of waste heat from the engine. When the temperature ofthe fluid increases the volume of the fluid increases. A volume of the hoses in thecoolant system is constant and fluid may escape to the expansion tank until thetemperature decreases and the fluid may return to the other parts of the coolant systemagain.
    The expansion tank is closed and partly filled with a gas, such as air. When theexpansion tank comprises a minimum amount of cooling fluid the pressure within theexpansion tank is low. When the amount of cooling fluid increases in the expansion tanka pressure of the gas increases. When a maximum amount of cooling fluid has escapedto the expansion tank the pressure of the gas may be considerable.
    With a high pressure within the expansion tank there is a risk that some of the gas leaksout from the expansion tank, e.g. at a lid of the expansion tank. lf leakage occur the pressure in the expansion tank decreases and the remaining pressure may beinsufficient for pressing the liquid back to the other parts of the cooling system when thetemperature of the liquid decreases. Hereby the efficiency of the cooling system maydecrease. lmprovements in the field of leaking expansion tanks are therefore desirable.
    SUMMARY An object of the present invention is to improve the efficiency of vehicle cooling systems.
    A further object of the present invention is to avoid or decrease leakage from vehicle expansion tanks.
    A further object of the present invention is to improve sealing between a vehicleexpansion tank filling neck and a lid/sealing thereof.
    Embodiments herein aim to provide a vehicle expansion tank sealing comprising asubstantially disc-shaped portion with a thickness between a first side and a second sidein an axial direction, a radius in a radial direction and an axial sealing surface arrangedat a peripheral part of the first side. The sealing further a centre portion which protrudesa predetermined distance from the disc portion on the first side in the axial directionradially inwards of the axial sealing surface. The centre portion comprises at least oneperipheral flange which extends in the radial direction and the at least one peripheralflange comprising a radial sealing surface.
    The axial sealing surface of the sealing is arranged to seal in the axial direction towardsan end surface of an expansion tank filling neck when a sealing assembly which thesealing is part of is threaded onto the tank filling neck thread. The radial sealing surfaceof the peripheral flange is arranged to seal in the radial direction against a cylindricalinner surface of the filling neck when the sealing assembly is threaded onto the fillingneck thread and a part of the filling neck is arranged between a cylindrical flange of thesealing assembly and the centre portion of the sealing. Hereby a very tight and reliablesealing is achieved wherefore leakage is prevented.
    The axial sealing properties are dependent on the tightening torque with which thesealing assembly is threaded onto threads of the filling neck. The axial sealing mayprovide a sufficient seal alone in some situations but may be insufficient when thepressure in the expansion tank exceeds a certain level. Further, the sealing assemblymay loosen a bit during vibrations, e.g. stemming from bumpy roads/vehicle suspensionor vibrations from a vehicle engine. When the sealing assembly loosen, leakage mayoccur and pressure in the tank may decrease.
    With the radial sealing between the sealing surface of the at least one centre portionradial flange and the cylindrical inner side of the filler neck friction between the tanksealing and the filling neck is increased. A radial pressure between the centre portionradial flange and the cylindrical inner side of the filler neck is also increased. Hereby thetank sealing will remain in the sealing position without loosen. Further, the radial sealingis to a much lesser extent dependent on the tightening torque. In other words, the radialsealing will effectively provide its sealing function also in situations where the sealingassembly has loosened slightly.
    Thus, embodiments herein provides an improved sealing between a vehicle expansiontank filling neck and a sealing thereof. Embodiments herein thus decrease expansiontank leakage and provides for more efficient vehicle cooling systems.
    According to some embodiments the centre portion comprises at least two peripheralflanges which extend in the radial direction. Hereby the radial pressure between thecentre portion radial flange and the cylindrical inner side of the filler neck is increasedand leakage further prevented.
    According to some embodiments the at least one peripheral flange has a substantiallytriangular cross-section. A triangular cross-section has proven to efficiently seal betweenthe centre portion radial flange and the cylindrical inner side of the filler neck.
    According to some embodiments the cross-section of the at least one peripheral flangeis shaped as a right-angle triangle with a first side facing the centre portion, a secondside in parallel with the radial direction and a hypotenuse side facing the disc shapedportion. This shape has proven to provide a particularly good sealing since the sealing and the inner side of the filler neck remains in contact also during very high pressurewithin the expansion tank.
    According to some embodiments the centre portion comprises at least one at least partlycylindrical rib which comprises the at least one peripheral flange. The cylindrical rib mayprotrude in the axial direction, radially inwards of and substantially in parallel to thecylindrical inner side of the filler neck when the seal is mounted. Hereby the sealing hasexcellent sealing properties also when the contact between the axial sealing surface andthe filling neck is insufficient for preventing leakage.
    According to some embodiments the centre portion comprises a plurality of cross-ribsextending radially inwards from the at least partly cylindrical rib. Hereby the sealing isreinforced and can press against the inner wall of the filling neck with a relatively high pressure.
    According to some embodiments the centre portion comprises one or more pockets,defined by the at least partly cylindrical rib or by the at least partly cylindrical rib and thecross-ribs. The pocket are thus arranged as concave, open recesses in the centreportion. A high pressure in the tank will cause the cylindrical rib to be pressed furtheragainst the cylindrical inner side of the filler neck. ln other words, when the need ofsufficient sealing is most, the pressure, and accordingly the grip, between the sealingand the cylindrical inner side of the filler neck will be most prominent.
    According to some embodiments the sealing is integrally formed of rubber, preferablyethylene propylene diene monomer, EPDM. Hereby the sealing may be made in onepiece which facilitates production and mounting.
    According to some embodiments the peripheral flange is coated with a layer of frictionreduction material. Hereby the seal may be inserted in the filling neck relatively easy.
    Embodiments herein also aim to provide a vehicle expansion tank sealing assemblywhich prevents leakage between the sealing assembly and a filler neck to which itsattached. According to an embodiment, this is provided by a vehicle expansion tanksealing assembly comprising a lid portion which extends in the radial direction and an at least partly cylindrical flange which extends out from the lid portion in the axial direction,the lid portion and the flange together forming a hollow space for accommodation of avehicle tank filling neck. The sealing assembly comprises a sealing according toembodiments herein with the second side of the sealing arranged adjacent to the lidportion within the hollow space. According to some embodiments the flange comprisesat least one internal flange thread for threading the sealing assembly onto at least onecomplementary shaped tank filling neck thread.
    Embodiments herein also aim to provide a vehicle expansion tank which preventsleakage between the sealing assembly and a filler neck of the tank. According to anembodiment, this is provided by a vehicle expansion tank comprising a filling neck withan external thread, wherein the vehicle tank comprises a vehicle tank sealing assemblyaccording to embodiments herein. The axial sealing surface of the sealing is arranged toseal in the axial direction towards an end surface of the filling neck when the sealingassembly is threaded onto the tank filling neck thread. The radial sealing surface of theperipheral flange is arranged to seal against an cylindrical inner surface of the fillingneck when the sealing assembly is threaded onto the filling neck thread and a part of thefilling neck is arranged between the cylindrical flange and the centre portion of the seal.
    With the radial sealing between the sealing surface of the at least one centre portionradial flange and the cylindrical inner side of the filler neck friction between the tanksealing and the filling neck is increased. A radial pressure between the centre portionradial flange and the cylindrical inner side of the filler neck is also increased. Hereby the tank sealing will remain in the sealing position without loosen.
    Embodiments herein also aim to provide a vehicle with an improved cooling system.According to an embodiment this is provided by a vehicle which comprises a vehicleexpansion tank according to embodiments herein.
    Further features of, and advantages with, the embodiments herein will become apparentwhen studying the appended claims and the following detailed description.
    BRIEF DESCRIPTION OF THE DRAWINGS The various aspects of embodiments herein, including its particular features andadvantages, will be readily understood from the following detailed description and theaccompanying drawings, in which: Fig. 1 illustrates a cross-section of a vehicle expansion tank sealing according to someembodiments, Fig. 2 illustrates a vehicle expansion tank sealing assembly according to someembodiments, Fig. 3 illustrates a perspective view of the Fig. 1 vehicle expansion tank sealing, Fig. 4 illustrates a cross-section of a vehicle expansion tank sealing assembly and avehicle tank according to some embodiments, Fig. 5 illustrates the Fig. 4 sealing assembly and tank in a perspective view according to some embodiments, and Fig. 6 illustrates a vehicle and a vehicle tank according to some embodiments.
    DETAILED DESCRIPTION Embodiments herein will now be described more fully with reference to theaccompanying drawings, in which some embodiments are shown. Like numbers refer tolike elements throughout. Well-known functions or constructions will not necessarily bedescribed in detail for brevity and/or clarity.
    Fig. 1 illustrates a vehicle expansion tank sealing 1. The tank sealing 1 comprises asubstantially disc-shaped portion 3 with a thickness t between a first side 5 and a secondside 7 in an axial direction A. The disc-shaped portion has a radius r in a radial directionR. The directions A and R are indicated by arrows in Fig. 1. The radius r is selected aftera sealing assembly/ lid assembly to which the sealing belongs. As illustrated in Fig. 2,the radius may be selected to cover a major part of a flat lid inner surface. ln the figures herein the disc-shaped portion is illustrated as substantially circular, but it mayalternatively be e.g. hexagonal.
    The sealing 1 comprises an axial sealing surface 9 arranged at a peripheral part of thefirst side 5. The sealing further comprises a centre portion 11 which protrudes apredetermined distance d from the disc shaped portion 3 on the first side 5 in the axialdirection A. The centre portion 11 is arranged radially inwards of the axial sealingsurface 9. The distance d may e.g. be in the range of 10-30 mm. ln some embodimentsthe distance d is at least 10mm, in some embodiments the distance d is at least 15 mmand in some embodiments the distance d is at least 20 mm.
    The centre portion 11 comprises at least one peripheral flange 13 which extends in theradial direction R. ln the embodiment depicted in Fig. 1 the centre portion 11 comprisestvvo peripheral flanges 13, arranged substantially in parallel with each other andextending outwards in the radial direction R out from a rotation centre of the tank sealing1. The centre portion 11 may comprise more than two flanges, such as three, four or fiveflanges.
    The at least one peripheral flange 13 comprises a radial sealing surface 15. Theperipheral flange(s) 13 and the radial sealing surface(s) 15 are arranged to press againstan cylindrical inner surface of the filling neck, further discussed in conjunction to Figs. 4- As illustrated in Fig. 1, the at least one peripheral flange 13 may have a substantiallytriangular cross-section. ln some embodiments the cross-section of the at least oneperipheral flange 13 is shaped as a right-angle triangle with a first side 13' facing thecentre portion, a second side 13” in parallel with the radial direction R and hypotenuseside 13'” facing the disc shaped portion 3.
    Fig. 2 illustrates a vehicle expansion tank sealing assembly 17 comprising a lid portion19 which extends in the radial direction R and an at least partly cylindrical flange 21which extends out from the lid portion 19 in the axial direction A.
    The lid portion 19 and the flange 21 together forms a hollow space for accommodation ofa vehicle tank filling neck (illustrated in conjunction with Figs. 4-5). The sealing assembly17 comprises a sealing 1 according to embodiments herein. The second side 7 of thesealing is arranged adjacent to the lid portion 19 within the hollow space.
    The flange 21 may comprises at least one flange thread 23, which may be an internalflange thread as illustrated in Fig. 2. The flange thread 23 allows threading of the sealingassembly 17 onto at least one complementary shaped tank filling neck thread.
    The sealing 1 may be attached to the lid portion 19 or may be movable relatively the lidportion 19. ln some applications it is preferable to have a sealing 1 which is not attachedto the inner side of the lid, since the sealing then may position itself co-axially with afilling neck opening independently of the threads.
    Fig. 3 illustrates an embodiment in which the centre portion 11 comprises at least one atleast partly cylindrical rib 25 which comprises the at least one peripheral flange 13. Thecylindrical rib 25 may project out from the first side of the disc-shaped portionsubstantially in parallel with the cylindrical flange of the lid, as illustrated in Fig. 2.
    The centre portion 11 may further comprise a plurality of cross-ribs 27 extending radiallyinwards from the at least partly cylindrical rib 25. The ribs 25, 27 may thus togetherresemble of a wheel with spokes. The cylindrical rib 25 may form a large pocket,alternatively may the cylindrical rib 25 and the cross-ribs 27 together form a plurality ofpockets 29 which may be shaped as circle-sectors or cake-pieces.
    The sealing 1 may be integrally formed of rubber, such as ethylene propylene dienemonomer (EPDM). ln some embodiments the sealing 1 is made of other materials withsuitable elastic properties. The lid with the flange may e.g. be made of plastics or metal.ln some embodiments the peripheral flange(s) is coated with a layer of friction reductionmaterial such as Teflon. ln Fig. 3 also the peripheral part 10 of the first side and the axial sealing surface 9 are depicted.
    Fig. 4 and 5 illustrate a vehicle expansion tank 31 with a filling neck 33. The filling neck33 comprises an external thread 35 and a cylindrical inner surface 37.
    The vehicle tank 31 comprises a vehicle tank sealing assembly 17 according toembodiments described herein. The sealing assembly 17 can be selectively attachedand detached to the filling neck of the tank 31 via the threads of the filling neck and thethreads of the flange.
    As illustrated in Figs. 4-5 the axial sealing surface 9 of the sealing 1 is arranged to sealin the axial direction A towards an end surface 39 of the filling neck 33 when the sealingassembly 17 is threaded fully onto the filling neck thread 35.
    The radial sealing surface of the peripheral flanges is arranged to seal against thecylindrical inner surface 37 of the filling neck 33 when the sealing assembly 17 isthreaded onto the filling neck thread 35 and a part of the filling neck 33 comprising theend surface 39 is arranged between the cylindrical flange 21 and the centre portion 11 of the sealing. ln Fig. 5 it is illustrated that the pockets 29 are exposed the pressure within the tank 31when the sealing assembly 17 is fastened to the tank 31 and thereby closes the tank 31.Peripheral pocket walls 29” will then, by the pressure, be pressed radially outwardstowards the cylindrical inner surface 37 of the filling neck 33. The contact force betweenthe peripheral flanges 13 and the cylindrical inner surface 37 of the filling neck 33 willthus increase as the pressure within the tank 31 increases. Hereby an excellent sealing is achieved.
    Fig. 6 illustrates a vehicle 41. The vehicle 41 may be e.g. a truck, a bus, any commercialvehicle, any constructional vehicle or the like. The vehicle may be a car, tractor, vesselor any other type of vehicle comprising an expansion tank 31. The tank comprises a sealing assembly according to embodiments described herein.
    权利要求:
    Claims (13)
    [1] 1.
    [2] 2. A vehicle expansion tank sealing (1) comprising a substantially disc-shapedportion (3) with a thickness (t) between a first side (5) and a second side (7)in an axial direction (A), a radius (r) in a radial direction (R) and an axialsealing surface (9) arranged at a peripheral part (10) of the first side (5)characterized in that the sealing (1) further comprises a centre portion (11)which protrudes a predetermined distance (d) from the disc-shaped portion(3) on the first side (5) in the axial direction (A) radially inwards of the axialsealing surface (9), and in that the centre portion (11) comprises at least oneperipheral flange (13) which extends in the radial direction (R), the at leastone peripheral flange (13) comprising a radial sealing surface (15). _ The sealing (1) according to claim 1 wherein the centre portion (11) comprises at least two peripheral flanges (13) which extend in the radialdirection (R).
    [3] 3. The sealing (1) according to claim 1 or 2 wherein the at least one peripheralflange (13) has a substantially triangular cross-section.
    [4] 4. The sealing (1) according to claim 3 wherein the cross-section of the at leastone peripheral flange (13) is shaped as a right-angle triangle with a first side(13') facing the centre portion (11), a second side (13”) in parallel with theradial direction (R) and a hypotenuse side (13”') facing the disc shapedportion (3).
    [5] 5. The sealing (1) according to any one of the preceding claims wherein thecentre portion (11) comprises at least one at least partly cylindrical rib (25)which comprises the at least one peripheral flange (15).
    [6] 6. The sealing (1) according to claim 5 wherein the centre portion (11)comprises a plurality of cross-ribs (27) extending radially inwards from the atleast partly cylindrical rib (25).
    [7] 7.
    [8] 8.
    [9] 9. 11 The sealing (1) according to claim 5 or 6 wherein the centre portion (11)comprises one or more pockets (29), defined by the at least partly cylindricalrib (25) or by the at least partly cylindrical rib (25) and the cross-ribs (27). The sealing (1) according to any one of the preceding claims wherein thesealing (1) is integrally formed of rubber, preferably ethylene propylene dienemonomer (EPDM). The sealing (1) according to any one of the preceding claims wherein the atleast one peripheral flange (13) is coated with a layer of friction reduction material.
    [10] 10. A vehicle expansion tank sealing assembly (17) comprising a lid portion (19) which extends in the radial direction (R) and an at least partly cylindricalflange (21) which extends out from the lid portion (17) in the axial direction(A), the lid portion (17) and the flange (21) together forming a hollow spacefor accommodation of a vehicle tank filling neck (33) wherein the sealingassembly (17) comprises a sealing (1) according to any one of the precedingclaims with the second side (7) of the sealing (1) arranged adjacent to the lidportion (19) within the hollow space.
    [11] 11. The vehicle tank sealing assembly (17) according to claim 10 wherein the flange (21) comprises at least one internal flange thread (23) for threading thesealing assembly (17) onto at least one complementary shaped tank fillingneck thread (35).
    [12] 12. A vehicle expansion tank (31) comprising a filling neck (33) with an external thread (23), wherein the vehicle tank (31) comprises a vehicle tank sealingassembly (17) according to claim 11 and wherein the;- the axial sealing surface (9) of the sealing (1) is arranged to seal in the axial direction (A) towards an end surface (39) of the filling neck(33) when the sealing assembly (17) is threaded onto the tank fillingneck thread (35), and wherein 12 - the radial sealing surface (15) of the peripheral flange (13) is arrangedto seal against an cylindrical inner surface (37) of the filling neck (33)when the sealing assembly (17) is threaded onto the filling neckthread (35) and a part of the filling neck (33) is arranged between the5 cylindrical flange (21) and the centre portion (11) of the sealing (1).
    [13] 13. A vehicle (41), wherein the vehicle (41) comprises a vehicle expansion tank(31) according to claim 12.
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    同族专利:
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    EP3504409A4|2020-01-22|
    WO2018038661A1|2018-03-01|
    KR20190031579A|2019-03-26|
    BR112019001834A2|2019-05-07|
    SE541582C2|2019-11-05|
    CN109923291B|2022-01-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    KR102147556B1|2013-03-11|2020-08-24|가부시키가이샤 티라도|Resinous radiator cap and mounting structure therefor|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1651127A|SE541582C2|2016-08-23|2016-08-23|Vehicle expansion tank sealing, sealing assembly, vehicle expansion tank and vehicle with expansion tank|SE1651127A| SE541582C2|2016-08-23|2016-08-23|Vehicle expansion tank sealing, sealing assembly, vehicle expansion tank and vehicle with expansion tank|
    KR1020197006811A| KR102208343B1|2016-08-23|2017-08-09|Vehicle with vehicle expansion tank sealing, sealing assembly, vehicle expansion tank and expansion tank|
    BR112019001834-4A| BR112019001834A2|2016-08-23|2017-08-09|vehicle expansion tank seal, seal assembly, vehicle expansion tank and vehicle with expansion tank|
    PCT/SE2017/050805| WO2018038661A1|2016-08-23|2017-08-09|Vehicle expansion tank sealing, sealing assembly, vehicle expansion tank and vehicle with expansion tank|
    CN201780050477.2A| CN109923291B|2016-08-23|2017-08-09|Vehicle expansion tank seal, seal assembly, vehicle expansion tank and vehicle with expansion tank|
    EP17844032.7A| EP3504409A4|2016-08-23|2017-08-09|Vehicle expansion tank sealing, sealing assembly, vehicle expansion tank and vehicle with expansion tank|
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