EP0774569B1 - Verschlussdeckel für einen Kühlungskreislauf eines Kraftfahrzeuges - Google Patents

Verschlussdeckel für einen Kühlungskreislauf eines Kraftfahrzeuges Download PDF

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Publication number
EP0774569B1
EP0774569B1 EP19960402411 EP96402411A EP0774569B1 EP 0774569 B1 EP0774569 B1 EP 0774569B1 EP 19960402411 EP19960402411 EP 19960402411 EP 96402411 A EP96402411 A EP 96402411A EP 0774569 B1 EP0774569 B1 EP 0774569B1
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EP
European Patent Office
Prior art keywords
plug
fact
base
central leg
disc
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Expired - Lifetime
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EP19960402411
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English (en)
French (fr)
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EP0774569A1 (de
Inventor
Jean-Pierre Lefevre
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Compagnie de Materiel et dEquipements Techniques Comet
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Compagnie de Materiel et dEquipements Techniques Comet
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/0204—Filling
    • F01P11/0209—Closure caps
    • F01P11/0247—Safety; Locking against opening

Definitions

  • the invention relates to a plug for a circuit of motor vehicle cooling.
  • the invention relates more particularly to a stopper comprising means for taring and balancing pressures, also called pressure switch cap for shutting off a vehicle cooling system automobile, of the type in which the plug is received in a base, on the upper end of which it is fixed in closed position, of the type in which the cap has a lower transverse wall which separates axially so seals an upper portion of a lower portion of the base, of the type in which the plug has a wall transverse upper which sealingly isolates the circuit cooling of the atmosphere, of the type in which the lower transverse wall has a valve normally closed which opens beyond a pressure difference threshold of fluid between the upper and lower portions of the base, of the type in which the valve comprises a body of valve mounted movable relative to the plug, the body of valve with a transverse disc on one side bottom of which is fixed a waterproofing membrane annular intended to be pressed against an annular seat of overpressure by an overpressure calibration spring.
  • the valve ensures both overpressure evacuation and sealing functions between the lower portion of the base and the upper portion of the base into which a channel connected to the reservoir opens compensation.
  • This type of pressostatic plug has the disadvantage, in order to achieve sealing between the portions lower and upper of the base, to require that the valve is pressed firmly against its seat and by therefore the overpressure spring is compressed.
  • the value of this initial compression of the overpressure spring depends on the position of the plug relative to the threshold of the base, i.e. that it depends on the actual dimensions of the cap and the base.
  • the manufacturing tolerances of the various components cause dispersions in the actual positioning of the plug in the base and therefore dispersions in the value of the pressure relief valve according to the value of the initial compression of the spring.
  • the assembly of the different pieces of the plug means that there is no generally little room, in the axial direction, for the overpressure spring.
  • the invention proposes a plug of the type described previously, characterized in that the annular seat of overpressure is arranged on an upper face of the wall lower transverse plug which is fixed and which is provided a central hole for the passage of the fluid, and in that the valve body has a central leg in two parts of which the upper part extends axially downwards from the underside of the transverse disc and through the hole central of the lower transverse wall of the plug, and in this that the overpressure spring is a compression spring arranged between a lower face of the transverse wall lower and a crown arranged at the free end of the lower part of the central foot.
  • the pressostatic plug 10 which is represented on the Figures 1 to 4 is intended to be fixed in the closed position on the upper end 12 of a base 14 whose end lower 15 is connected to a cooling circuit (not shown) of a motor vehicle.
  • the function of the pressostatic plug 10 is to part, to prevent coolant from escapes to the atmosphere and, on the other hand, regulate the fluid pressure during engine operation thermal (not shown) of the vehicle.
  • the plug 10 carries a valve 16 normally closed and which, in the open position, leaves escape from the fluid towards a compensation tank (not shown) via a channel 18 which opens out in the base 14.
  • valve 16 opens in a second direction in order to admit fluid from the compensation tank and direction of the cooling circuit.
  • the plug 10 is fixed to the base 14 by means of a fixing ring 20 which is screwed on the upper end 12 of the base 14.
  • the plug 10 includes a plug body 22 substantially tubular which is rotatably mounted on the ring fixation 20 around its axis X-X and which is received in the base 14 whose interior is delimited by a side wall internal 24 substantially cylindrical.
  • the upper axial end 26 of the plug body 22 is closed by a transverse cover 28 and the body of plug 22 has, substantially in its middle, a wall lower transverse 30 which is made of material with the plug body 22.
  • the valve 16 is arranged inside the body of tubular plug 22 and it comprises a valve body 32 of which a transverse upper disc 34 is received between the cover 28 and the lower transverse wall 30.
  • the upper disc 34 has on its lower face 36 an annular sealing membrane 38 which is fixed on the disc 34 by its outer periphery 40 while its internal periphery 42 is free.
  • the upper disc 34 has an upper face 37 into which open holes 35, the number of four.
  • the disc 34 In order to center the membrane 38, the disc 34 has on its outer periphery a flange 44 which extends axially down to form a housing for the membrane 38.
  • the valve body 16 also includes a foot central 45 in two parts which extends axially downwards from the underside 36 of the disc 34 through a central opening 48 of the membrane 38 and through a central bore 50 of the lower transverse wall 30.
  • Crown 54 has an annular portion peripheral 58 which is connected to the central rod 46 by hooks 60 which are four in number and which are distributed angularly on a regular basis.
  • An overpressure spring 62 which, in the example shown in the figures, is a coil spring of compression, is supported by one end against a face lower 64 of the lower transverse wall 30 and by its other end against an upper bearing surface 66 of the annular portion 58 of the crown 54.
  • the hooks 60 of the crown 54 have a first part 61 which extends vertically upwards from the annular portion 58 and which guides the spring 62 which surrounds the crown 54, thus avoiding any risk buckling of the spring 62 which could appear due to its great length.
  • the hooks 60 also include a second part 63 which extends the first part, which is curved downwards and inwards of the crown 54, and of which the free end 65 rests on an upper bearing surface 56 substantially spherical from the lower end 52 of the foot central 46.
  • the lower end 56 of the central rod 46 is introduced axially from above at center of the crown 54 from which it spreads the hooks 60 radially outward until their ends free 65 fold back elastically to bear against the upper spherical bearing surface 52.
  • the overpressure spring 62 pushes the crown 54 and the valve body 32 axially downwardly to press the outer periphery 40 of the membrane sealing 38 against a corresponding annular seat 68 formed on the upper face 70 of the transverse wall lower 30.
  • the plug 10 delimits waterproof material in the base 14 a lower portion 80 and a portion upper 82.
  • the upper portion 82 of the base 14 is isolated from the atmosphere by the cover 28 and by a seal upper 84, arranged in an annular groove 86 of the wall outer 76 of the plug body 12 and which cooperates with a cylindrical seat 88 formed on the internal lateral face 24 of the base 14.
  • the upper portion 82 is formed of two parts 94, 96, respectively interior and exterior, which are separated radially by the plug body 12 but which communicate through orifices 90 arranged transversely in the plug body 12 so as to open on the one hand in an internal face 92 of the plug body 12, above of the lower transverse wall 30, and, on the other hand, in its external face 76, between the two seals 72, 84.
  • the calibration spring 62 maintains the membrane 38 against the annular seat 68 and the periphery free internal 42 of the membrane 38 is pressed by pressure against the underside 36 of the transverse disc 34 of the body valve 32 so as to close the holes 35 and so maintain the seal between the lower portions 80 and upper 82 of the base
  • the pressure in the cooling circuit may increase until it reaches a value threshold which causes the upward movement of the body of valve 32 which carries the sealing membrane 38 and the crown 54, so as to be in the configuration shown in Figure 2.
  • a value threshold which causes the upward movement of the body of valve 32 which carries the sealing membrane 38 and the crown 54, so as to be in the configuration shown in Figure 2.
  • the spring overpressure 62 is compressed axially and the fluid excess is likely to be evacuated to the tank of compensation through the central bore 50 of the wall lower transverse 30, orifices 90 and channel 18.
  • the overpressure spring 62 recalls the waterproofing membrane 38 against its seat 68 so as to realize again the seal between the lower 80 and upper 82 portions of the base 14, and thus allow the cooling fluid maintain an overpressure which increases its boiling temperature.
  • the fluid is thus likely to circulate from the reservoir compensation to the cooling circuit passing through the channel 18, the orifices of the plug body 12, the holes 35 of the valve body 16, the central opening 48 of the diaphragm 38 and the central bore 50 of the transverse wall 30.
  • valve 16 of the pressostatic plug 10 provides pressure regulation of the cooling circuit.
  • One of the advantages of the plug 10 according to the invention is that the trigger threshold value of the valve at the overpressure is independent of the fixing of the plug 10 on the base 14.
  • valve 16 and the overpressure seat 68 are linked to the plug 10 so that the relative position of the two elements is not linked to a more or less precise closure of the plug.
  • the arrangement of the overpressure spring 62 in below the lower transverse wall 30 allows to use a long spring without increasing the dimension axial of the plug body 12.
  • the overpressure spring 62 does not act directly on the central foot 46 but on a crown 54 which is mounted on the central leg 32 so to be able to pivot.
  • the force exerted by the spring on the valve 16 is perfectly centered axially and we obtain a contact pressure of the membrane 38 on its seat overpressure ring 68 which is uniformly distributed.
  • the assembly of a plug 10 according to the invention is carried out as follows.
  • the waterproofing membrane 38 is fixed on the face lower 36 of the valve body 32 which is then engaged axially in the upper axial end 26 of the body of plug 12 so that the central rod 46 of the body valve 12 passes through passage 50 of the wall lower cross 30.
  • the cover 28 is then tightly assembled by screwing, welding or gluing on the axial end upper 26 of the plug body 12.
  • the spring 62 is then introduced axially by the lower axial end of the plug body 12, around the central leg 46 of the valve body 16.
  • the crown 54 is then fitted axially on the free lower end 56 of the central rod 46 in compressing the overpressure spring 62.
  • the fixing ring 20 is finally fitted resiliently by force on the upper axial end 26 of the body of plug 12 to form plug 10.
  • This embodiment of the pressostatic plug is first distinguishes from the first embodiment by the two-part design of the central leg 45 of the valve 32 which is geometrically "inverted" with respect to that described previously.
  • the lower part of the central foot 45 is here constituted by the central rod-shaped part 46 of which the lower end extends radially outwards to constitute the peripheral annular zone 58 whose face upper 66 serves as a support for the lower end of the spring 62 valve calibration.
  • the free upper end 56 of the central rod 46 is generally spherical and its lower part 52 serves supporting the free ends 65 of the four hooks 60 belonging to the upper part 54 of the central leg 45.
  • the part upper 54 of the central leg 45 is substantially present in the form of an annular cylindrical skirt 54 which is made integrally with the valve body 32 which it extends axially downward from the underside of this last which carries the waterproofing membrane 38 and through the central bore 50 of the lower transverse wall 30 of the body 22 of the plug 10.
  • the skirt 54 is an openwork skirt, that is to say that it comprises a series of slots 55 of vertical orientation and evenly distributed angularly.
  • the bottom portion of the top shaped skirt 54 of the central leg 45 is received in a housing 100, of complementary form and in which it is fixed by example by heat sealing or by bonding, belonging to a sleeve 102 of generally cylindrical annular shape which extends radially inward and axially upward inside the skirt 54 by four hooks 60 whose upper free ends 65 cooperate with the part lower spherical 52 of the upper free end 56 of the central rod 46 of the lower part of the central foot 45.
  • the assembly of the two parts upper 54 and lower 46 of the central leg 45 is effected by elastic fitting of the free upper end spherical 56 of the central rod 46 between the hooks 60, with interposition of the calibration spring 62.
  • the upper part 54 in the form of a skirt makes it possible to receive, axially movably, a shutter 104 in shape of an overturned pot which is delimited by an annular skirt 106 axially oriented and through a transverse wall blind upper 108 which extends transversely opposite a flexible sealing seat 110 mounted in an orifice 112 which runs right through the upper transverse wall of the valve body 32 for opening into zone 94 of the upper part of the plug 10.
  • the shutter 104 is likely to move axially between an open position, illustrated in the figure 6, in which a passage of fluid is possible through the orifice 112, and a closed position illustrated in FIG. 5 in which the upper transverse wall 108 of the mobile shutter 104 closes the orifice 112.
  • tubular lower portion 23 of the body 22 of the plug 10 is perforated, that is to say that it has a series of slots 114 axially oriented and angularly distributed so regular which allow the fluid to pass inside the annular space delimited laterally by the lower part tubular 23 and through the upper part of the central leg 45.
  • the tubular body 22 of the plug 10 is mounted rotating manner with respect to part 20 of the latter thanks to the arrangement which will now be described in detail.
  • an upper annular portion 21 of the tubular body 22 extends axially upward and is received inside a complementary tubular portion 116 belonging to an upper cap 118 of the plug 10 to which the upper transverse wall 28 belongs.
  • the cap 118 has a general dome shape which extends transversely outwards by an edge 120 in the form of a disc which leans against a surface annular opposite 122 of the fixing ring 20.
  • Part 21 is fixed by heat sealing or by gluing at the part 116 of the cap 118, the assembly constituted by the cap 118 and the tubular body 22 thus being mounted at rotation relative to the screw ring 20, with interposition of a lip seal 123.
  • the cap 118 comprises a line 124 of degassing, pipette-shaped, which here extends radially towards the outside from the domed central part of the transverse wall 28 of the cap 116.
  • Line 124 has an internal degassing channel 18 which can thus connect, by means of a flexible pipe (not shown in the figures), an expansion vessel at the zone 94 of the upper part of the pressostatic plug 10, the conduit 18 opening laterally into this zone.
  • Line 124 is advantageously produced from material by molding with the cap 118 and, due to the possibility of rotation of the cap 118 relative to the ring screw 20, the final orientation of the pipe 124 by is indifferent to the base, i.e. it does not not depend on the final angular position of tightening of the ring 20 relative to the base which receives the plug 10.
  • valve 32 In case of overpressure, and as illustrated in the Figure 5, the operation of the valve 32 is similar to that which has been described previously with reference to FIGS. 1 to 4.
  • the overpressure appearing inside the cooling system causes the body to lift valve 32, against the return effort which is due to it applied by the calibration spring 62, to allow the evacuation of the overpressure through the slots 114 and 155, then between the seat 68 and the annular membrane 38, then finally through the degassing channel 18 of the pipe 124 belonging to the cap 118 of the plug 20.
  • the pressure inside the cooling circuit can be restored to atmospheric value thanks to the presence of the movable shutter 104 which is biased axially down when the pressure difference between the part upper 94 and the lower part downstream of the orifice 112 and of its sealing seat 110 is positive, so that allow pressure balancing along the path indicated on Figure 6.
  • slots 114 makes it possible to filter the flow of liquid by thus blocking the polluting particles present in the motor vehicle engine cooling system.
  • the swiveling pipe 124 simplifies the production of vehicle water boxes and it optimizes the circuit design whatever the location of the radiator on the vehicle.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Closures For Containers (AREA)
  • Motor Or Generator Cooling System (AREA)

Claims (14)

  1. Verschlußdeckel zum Verschließen eines Kühlungskreislaufs eines Kraftfahrzeuges, von dem Typ, bei dem der Verschlußdeckel (10) in einem Ansatz (14) aufgenommen wird, auf dessen oberem Ende (12) er in Schließposition befestigt ist, von dem Typ, bei dem der Verschlußdeckel (10) eine quer gerichtete untere Wand (30) aufweist, die axial abdichtend einen oberen Teil (82) von einem unteren Teil (80) des Ansatzes (14) trennt, von dem Typ, bei dem der Verschlußdeckel (10) eine quer gerichtete obere Wand (28) aufweist, die abdichtend den Kühlungskreislauf von der Atmosphäre isoliert, von dem Typ, bei dem die quer gerichtete untere Wand (30) ein Ventil (16) aufweist, das normalerweise geschlossen ist, das sich jenseits einer Schwelle des Differenzdruckes des Fluids zwischen den oberen (82) und unteren Teilen (80) des Ansatzes (14) öffnet, von dem Typ, bei dem das Ventil (16) einen Ventilkörper (32) aufweist, der beweglich bezüglich des Verschlußdeckels (10) angebracht ist, wobei der Ventilkörper (32) eine quer gerichtete Scheibe (34) aufweist, die auf der unteren Seite (36) eine ringförmige Dichtungsmembran (38) befestigt hat, die dazu bestimmt ist, an einen ringförmigen Sitz (68) für Überdruck angelegt zu werden, durch eine Feder (62) zum Ausgleichen des Überdruckes, dadurch gekennzeichnet, daß der ringförmige Sitz (68) für Überdruck auf einer oberen Seite (70) der quer gerichteten unteren Wand (30) des Verschlußdeckels (10) angeordnet ist, die fest ist und die mit einer zentralen Bohrung (50) für den Durchgang eines Fluides versehen ist, und daß der Ventilkörper (32) einen zentralen Fuß (45) aus zwei Teilen (46, 54) aufweist, dessen oberer Teil (46, 54) sich axial nach unten ausgehend von der unteren Seite (36) der quer gerichteten Scheibe (34) und quer durch die zentrale Bohrung (50) der quer gerichteten unteren Wand (30) des Verschlußdeckels (10) erstreckt, und daß die Feder (62) zum Ausgleichen des Überdruckes eine Druckfeder ist, die zwischen einer unteren Seite (64) der quer gerichteten unteren Wand (30) und einem Kranz (58) am freien Ende des unteren Teils (54, 46) des zentralen Fußes (45) angeordnet ist.
  2. Verschlußdeckel gemäß Anspruch 1, dadurch gekennzeichnet, daß der untere Teil (54, 46) des zentralen Fußes (45) frei schwenkbar bezüglich des oberen Teiles (46, 54) des zentralen Fußes (45) mittels einer Art Kugelgelenk angebracht ist, so daß die von der Feder (62) zum Ausgleich des Überdrucks ausgeübte Rückstellkraft auf die gesamte Oberfläche des Sitzes (68) für Überdruck verteilt wird.
  3. Verschlußdeckel gemäß Anspruch 2, dadurch gekennzeichnet, daß das untere Ende (56) beziehungsweise obere Ende des oberen Teils (46, 54) beziehungsweise unteren Teils des zentralen Fußes (45) im wesentlichen kugelförmig ist, und daß der andere Teil (54, 46) des zentralen Fußes (45, 58) eine Serie von Haken (60) aufweist, deren freies Ende (65) in Anlage auf einer kugelförmigen oberen beziehungsweise unteren Kalotte (52) ist, um das Zusammensetzen durch elastisches Zusammenfügen der beiden Teile (46, 54) des zentralen Fußes (45) zu ermöglichen und das Kugelgelenk zwischen den beiden Teilen des zentralen Fußes zu verwirklichen.
  4. Verschlußdeckel nach dem vorstehenden Anspruch, dadurch gekennzeichnet, daß der obere Teil des zentralen Fußes (45) ein Teil in Form eines Schaftes (46) ist, dessen unteres freies Ende (56) im wesentlichen kugelförmig ist, und daß der untere Teil (54) eine ringförmige umfängliche Zone (58) zum Abstützen der Feder (62) aufweist.
  5. Verschlußdeckel gemäß Anspruch 4, dadurch gekennzeichnet, daß die Haken (60) jeweils einen Teil (61) zum Führen der Feder (62) aufweisen, der sich im wesentlichen axial nach oben von dem ringförmigen Kranz (58) aus auf die quergerichtete untere Wand (30) des Verschlußdeckels (10) zu erstreckt und der durch einen Verankerungsteil (63) verlängert ist, der nach innen und unten zurückgebogen ist, von dem das freie Ende (65) in Anlage auf der oberen kugelförmigen Kalotte (52) des unteren Endes (56) des oberen Teils in Form eines Schaftes (46) des zentralen Fußes (45) ist.
  6. Verschlußdeckel gemäß Anspruch 3, dadurch gekennzeichnet, daß der untere Teil (46) des zentralen Fußes (45) ein Teil in Form eines Schaftes (46) ist, dessen unteres Ende durch den ringförmigen umfänglichen Kranz (58) zum Abstützen der Feder (62) verlängert ist und dessen oberes freies Ende (56) im wesentlichen kugelförmig ist.
  7. Verschlußdeckel gemäß dem vorstehenden Anspruch, dadurch gekennzeichnet, daß der obere Teil (54) des zentralen Fußes (45) eine Schürze ist, die sich ausgehend von der unteren Seite (36) der quer gerichteten Scheibe (34) des Ventilkörpers (32) axial nach unten erstreckt und von der ausgehend die Haken (60) sich axial nach innen und nach oben erstrecken, so daß ihre freien Enden (65) in Anlage auf der unteren kugelförmigen Kalotte (52) des kugelförmigen oberen Endes (56) des unteren Teils in Form des Schaftes (46) des zentralen Fußes (45) sind.
  8. Verschlußdeckel gemäß einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, daß die ringförmige Dichtungsmembran (38) auf der Scheibe (34) des Ventilkörpers (32) über ihren äußeren Umfang (40) befestigt ist, der überdies mit dem ringförmigen Sitz (68) für Überdruck zusammenwirkt, daß ihr innerer Umfang (42) frei ist und daß die Scheibe (34) zumindest ein Loch (35) aufweist, welches in der unteren Seite (36) der Scheibe (34) mündet, gegenüber dem inneren Umfang der Dichtungsmembran (38), so daß in Anwesenheit eines überschüssigen Fluiddruckes im unteren Teil (80) des Ansatzes (14), die Membran (38) an die untere Seite (36) der Scheibe angelegt wird, so daß sie das Loch (35) des Durchganges verschließt, während in Anwesenheit eines Überdruckes in dem oberen Teil (82) des Ansatzes (14) der innere Umfang (42) der Membran (38) sich axial von der Scheibe (34) entfernt, so daß das Fluid zum unteren Teil (80) des Ansatzes (14) durch das Loch (35) der Scheibe (34) und die zentrale Bohrung der quer gerichteten unteren Wand (30) des Verschlußdeckels (10) ausströmen kann.
  9. Verschlußdeckel gemäß irgendeinem der Ansprüche 4, 5 oder 8, dadurch gekennzeichnet, daß die quer gerichteten oberen (28) und unteren Wände (30) den oberen Teil (82) des Ansatzes abdichtend begrenzen, dank zweier ringförmiger oberer (84) und unterer (72) Dichtungen, die von dem Verschlußdeckel (10) getragen sind und die jeder mit einer zylindrischen Sitzfläche (78, 88) zusammenwirken, die in einer inneren, seitlichen Wand (24) des Ansatzes (14) angeordnet ist, und daß ein Entgasungskanal (18) in der seitlichen inneren Wand (24) des Ansatzes (14) mündet, zwischen den beiden Sitzflächen (78, 88) der Dichtungen.
  10. Verschlußdeckel gemäß dem vorstehenden Anspruch, dadurch gekennzeichnet, daß er einen rohrförmigen Deckelkörper (22) aufweist, in dessen Inneren die quer gerichteten oberen (28) und unteren (38) Wände angeordnet sind, daß der Deckelkörper (22) zwei abdichtende Verbindungen (72, 84) aufweist, und daß der Deckelkörper (22) zumindest eine freie Öffnung (90) für den Durchgang von Fluid aufweist, die auf seiner äußeren Seite (76) zwischen den beiden abdichtenden Verbindungen (72, 84) und, auf der inneren Seite (92) zwischen den beiden quer gerichteten Wänden (28, 30) mündet.
  11. Verschlußdeckel gemäß irgendeinem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß er einen Kanal zum Entgasen (18) aufweist, der in einer Leitung (124) zum Verbinden des Verschlußdeckels mit einem Expansionsgefäß ausgebildet ist, die sich ausgehend von der quer gerichteten oberen Wand (28) des Verschlußdeckels nach außen erstreckt.
  12. Verschlußdeckel gemäß einem der Ansprüche 6, 7 oder 11, dadurch gekennzeichnet, daß die quer gerichtete Scheibe (34) des Ventilkörpers (32) in ihrem Zentrum durch eine Öffnung (112) durchbohrt ist und daß der Ventilkörper ein axial bewegliches Abdeckung (104) aufnimmt, daß die Öffnung (112) schließt, wenn die Druckdifferenz zwischen den oberen und unteren Teilen des Ansatzes positiv ist.
  13. Verschlußdeckel gemäß dem vorstehenden Anspruch in Kombination mit Anspruch 7, dadurch gekennzeichnet, daß die Abdeckung (104) axial beweglich im Inneren des oberen Teils in Form einer Schürze (54) des zentralen Fußes (45) angebracht ist.
  14. Verschlußdeckel gemäß Anspruch 11, dadurch gekennzeichnet, daß der Kanal (118, 124) sich radial erstreckt und drehbar bezüglich eines Schraubringes (20) zum Schrauben des Verschlußdeckels auf dem Ansatz angebracht ist.
EP19960402411 1995-11-15 1996-11-12 Verschlussdeckel für einen Kühlungskreislauf eines Kraftfahrzeuges Expired - Lifetime EP0774569B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9513619 1995-11-15
FR9513619A FR2741133B1 (fr) 1995-11-15 1995-11-15 Bouchon perfectionne pour un circuit de refroidissement de vehicule automobile

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EP0774569A1 EP0774569A1 (de) 1997-05-21
EP0774569B1 true EP0774569B1 (de) 2001-10-10

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EP19960402411 Expired - Lifetime EP0774569B1 (de) 1995-11-15 1996-11-12 Verschlussdeckel für einen Kühlungskreislauf eines Kraftfahrzeuges

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EP (1) EP0774569B1 (de)
DE (1) DE69615786T2 (de)
ES (1) ES2163601T3 (de)
FR (1) FR2741133B1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2851786B1 (fr) * 2003-02-27 2005-04-15 Itw Bailly Comte Circuit de refroidissement pour vehicule automobile, et vehicule automobile correspondant

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Publication number Priority date Publication date Assignee Title
US2203801A (en) * 1936-11-12 1940-06-11 Eaton Mfg Co Closure device for sealed cooling systems
DE2028383A1 (de) * 1970-06-09 1972-03-16 Bau Kg Fabrik Fuer Kraftfahrze Verschlußdeckel mit automatischem Druckausgleich über Ventilteile gesteuert
DE2752930A1 (de) * 1977-11-26 1979-05-31 Sueddeutsche Kuehler Behr Verschlussteil fuer fuellstutzen von kuehler bzw. ausgleichsbehaelter in kuehlkreislaeufen von brennkraftmaschinen, insbesondere von kraftfahrzeugen, mit einem ueberdruck- und unterdruckventil
FR2677001B1 (fr) * 1991-05-29 1993-12-03 Journee Sa Paul Bouchon pour la fermeture d'une tubulure de remplissage d'un radiateur de vehicule automobile.

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FR2741133A1 (fr) 1997-05-16
ES2163601T3 (es) 2002-02-01
DE69615786T2 (de) 2002-08-29
FR2741133B1 (fr) 1997-12-12
DE69615786D1 (de) 2001-11-15
EP0774569A1 (de) 1997-05-21

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