EP1468172B1 - Sealing lid for motor vehicle radiator - Google Patents

Sealing lid for motor vehicle radiator Download PDF

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Publication number
EP1468172B1
EP1468172B1 EP03702501A EP03702501A EP1468172B1 EP 1468172 B1 EP1468172 B1 EP 1468172B1 EP 03702501 A EP03702501 A EP 03702501A EP 03702501 A EP03702501 A EP 03702501A EP 1468172 B1 EP1468172 B1 EP 1468172B1
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EP
European Patent Office
Prior art keywords
cap
sealing
pressure
recited
valve element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03702501A
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German (de)
French (fr)
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EP1468172A1 (en
Inventor
Heinrich Reutter
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Individual
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Individual
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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
    • 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
    • F01P11/0238—Closure caps with overpressure valves or vent valves
    • 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
    • F01P2011/0261—Safety; Locking against opening activated by temperature
    • 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
    • F01P2011/0266—Safety; Locking against opening activated by pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S220/00—Receptacles
    • Y10S220/32—Radiator cap
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S220/00—Receptacles
    • Y10S220/33—Gasoline tank cap

Definitions

  • the present invention relates to a closure cap for a stationary necking of a container, in particular motor vehicle radiator, according to the preamble of claim 1.
  • the rotation is formed by an axially movable and arranged within the handle member bracket, which is actuated by a thermal drive in the form of a Dehnstoffimplantations.
  • Object of the present invention is to provide a closure cap for a stationary neck of a Container, in particular motor vehicle radiator, of the type mentioned above, at whose rotation in a simpler manner and without unduly high losses present in the container interior temperature or existing in the container interior pressure to the rotation or their drive can be brought.
  • a closure cap for a stationary neck of a container in particular motor vehicle radiator, of the type mentioned.
  • the temperature-dependent or pressure-dependent operating element in the form of a Dehnstoffkapsel or, a membrane, the temperature prevailing inside the container or the pressure prevailing in the container interior directly, without losses and without delay.
  • the transmission of the temperature or pressure conditions in the container interior can be done in the shortest and most direct way directly in the course of the lid axis without disadvantages in the action of the pressure relief valve body and in particular in the action of the vacuum valve body are to be accepted. Due to the concentric arrangement of the vacuum valve body also a renewed stigmade design of the inner lid part is given.
  • the vacuum valve body is arranged in the course of the pressure or temperature transmission element. This also does not increase the height.
  • the features according to claim 6 are provided so that there is a simplified structural design and a simplified installation of the vacuum valve body in conjunction with the pressure relief valve.
  • the closure lid 10 or 110 shown in the drawing has an overpressure / vacuum valve assembly having a pressure relief valve body 12 and 112 and a vacuum valve body 13 and 113, which in the embodiment of Figure 1 by arranged at different locations components and the Embodiment of Figure 2 are formed by interconnected or nested components.
  • the opening pressure of the pressure relief valve body 12, 112 is fixed by means of a helical compression spring 44, 144 as well as the opening pressure of the negative pressure valve body 13, 113 by means of a helical compression spring 66, 166.
  • a closure member 17, 117 which serves here in the form of an external thread member for screwing and unscrewing the closure lid from the opening of a neck of a motor vehicle radiator or other container, not shown here, and a handle member 18, 118 opposite the closure element 17, 117 rotatable and by means of a same in both embodiments anti-rotation 19, 119 with this non-rotatably connected.
  • a drive 14, 114 for decoupling the anti-rotation device 19, 119 is like the latter itself arranged in a space between the handle and the closure element 18 and 17 or 118 and 117.
  • the closure element 17, 117 may be formed instead of a male thread element as a bayonet closure element.
  • the closure element 17, 117 has an intermediate bottom 21, 121 provided with an axial opening, on whose underside an externally threaded sleeve 23, 123 and on its upper side a connecting sleeve 24, 124 projects axially, via the radial flange 22, 122 of the closure element 17, 117 on Handle member 18, 118 rotatable, but is held axially immovable hanging.
  • the grip element 18, 118 engages under the outside edge of the flange 22, 122 of the connecting sleeve 24, 124 of the closure element 17, 117 and has centrally in the middle an axially inwardly projecting guide ring 25, 125, within which a compression spring 26, 126 is accommodated, which at one end to the Inside the handle member 18, 118 and the other end on a locking plate 27, 127 of the rotation 19, 119 is supported.
  • the locking plate 27, 127 is rotatably connected in both axial positions with the closure element, by external axially downwardly projecting jaws 29, 129 which engage in axial grooves 31, 131 of the closure member 17, 117 constantly.
  • the locking plate 27, 127 also has outer peripheral side radially projecting fingers 28, 128 which in an end position (right half section) between the handle member 18, 118th radially inwardly projecting retaining fingers 30, 130 engage. In this position, the anti-rotation 19, 119 not only with the closure member 17, 117 but also with the handle member 18, 118 rotatably connected, which makes it possible to screw on and off the closure lid 10, 110 on or from the container neck, not shown.
  • the anti-rotation 19, 119 against the action of the compression spring 26, 126 axially movable so that the fingers 28, 128 free from the spaces between the retaining fingers 30, 130 (left half-section), so that the rotation between anti-rotation 19, 119 and handle member 18, 118 is released, resulting in an idle rotation of the handle member 18, 118 on the closure member 17, 117 and prevents unscrewing of the closure lid 10, 110 from the container neck.
  • the cover inner part 15, 115 has a valve pot 36, 136, which hangs on the closure element 17, 117 and has the radial flow openings, not shown.
  • a bottom 38, 138 of the valve pot 36, 136 is provided with an inner recess 39, 139 to which an axially inwardly raised annular sealing surface 41, 141 is provided on the pressure relief valve body 12, 112 with a radially outer sealing surface 42, 142 of a sealing membrane 43, 143 under the action of a certain bias having compression spring 44, 144 rests.
  • the pressure relief valve body 12, 112 is approximately hat-shaped, wherein the sealing membrane 43, 143 is received within its edge axially bent towards the bottom 38, 138 toward the brim.
  • the sealing membrane 43, 143 whose outer peripheral region or radially outer sealing surface 42, 142 rests on the annular sealing surface 41, 141 is held stationary at its inner peripheral region or radially inner sealing surface 58, 158 in the embodiment of Figure 1, however, in the embodiment of Figure 2 under the action of a compression spring, as will be described, kept open ,
  • the inner central Sacklochaus nonethelessung 39, 139 in the bottom 38, 138 is connected via connecting openings 48, 148 with the interior of the container, not shown, or its container neck.
  • the drive 14, 114 for the anti-rotation device 19, 119 which is arranged between the locking plate 27, 127 and the intermediate bottom 21, 121 is provided with an elongate transmission element 54, 154 which extends along the closure lid axis 55, 155, the pressure relief valve body 12th , 112 including the sealing membrane 43, 143 penetrates and in or beyond a central through bottom opening 49, 149 with the container, not shown, in communication.
  • the transmission element 54, 154 serves to transmit the pressure or temperature conditions in the container interior to the pressure-controlled or thermally controlled drive 14, 114 for anti-rotation 19, 119.
  • the transmission element 54, 154 is formed in the manner of a hollow or solid rod, wherein the Anti-rotation 19, 119 facing portion diameter larger than the adjoining into the opening 49 of the bottom 38, 138 opening portion below the pressure relief valve body 12, 112.
  • On the thus formed annular shoulder 56, 156 of the transmission element 54, 154 is the inner peripheral region or the radially inner sealing surface 58, 158 of the sealing membrane 43, 143 of the pressure relief valve 12, 112 at least held sealingly when there is normal or positive pressure in the container interior.
  • the transmission element 54, 154 serves to guide a surrounding guide sleeve 46, 146 of the pressure relief valve body 12, 112.
  • the transmission element 54 is formed as a hollow rod with a through hole whose access opening is located in the plane of the bottom 38.
  • the hollow rod 54 is facing away from the bottom 38 provided with a flange 57 which rests on the intermediate bottom 21 of the closure element 17.
  • the blocking plate 27 facing a drive 14 forming membrane 50 is held pressure-tight clamped on the outer peripheral side.
  • the container interior with respect to the grip element 18 pressure-tight sealing membrane 50 is in the right half section of Figure 1 illustrated unpressurized starting position centered on the flange 57 and covers the through hole of the hollow rod 54.
  • the membrane 50 is at an annular region between said central region 51st and its clamping area provided with a ring bulge 52, which allows the axial deflection of the central portion 51 of the membrane 50.
  • the central region 51 of the membrane 50 is pressed by the action of the compression spring on the locking plate 27 on the flange 57.
  • the flange 57 is rotatably held on the outer peripheral side by engaging in the intermediate bottom 21 of the closure member 17 hooks.
  • the drive 114 is formed by a thermal capsule 150 which rests on the outer edge side on the intermediate bottom 121 of the closure element 117 and on the center of the central region of the locking plate 127 rests under the action of the compression spring 126.
  • the thermal capsule 150 passes on the bottom side into an elongated, hollow end-capped thermal projection 154 ', which is arranged inside the hollow rod 154 and projects beyond the bottom 138 of the valve plug 136.
  • Thermal capsule 150 and tab 154 ' include an expanding agent that expands under the influence of heat as the temperature increases.
  • the approach 154 ' may be formed as a solid rod and transfer the heat from the container interior to the expansion material in the thermal capsule 150.
  • the vacuum valve body 13, 113 is formed in different ways in the two embodiments. It is understood that the vacuum valve body 13, 113 described in each case for one embodiment can also be realized in the respective other embodiment.
  • the blocking plate 27 has, just like the membrane 50, a central opening 32, which is penetrated by the vacuum valve body 13.
  • the vacuum valve body 13 has at its lower end a shoulder 67 with an annular sealing surface 65, which is pressed under the action of the compression spring 66 against the underside of the membrane 50.
  • the negative pressure valve body 13 thus moves together with the locking plate 27 in the axial direction.
  • the underside of the shoulder 67 of the vacuum valve body 13 dips into a region of the here funnel-shaped through hole of the pressure transmission element 54.
  • the container interior prevailing negative pressure of the vacuum valve body 13 with its annular sealing surface 65th lift off from the diaphragm 50 against the action of the compression spring 66, so that a pressure equalization can take place.
  • the vacuum valve body 113 according to FIG. 2 is integrated into the overpressure valve body 112 or its sealing membrane 143. While in the embodiment of Figure 1, the lying on the annular shoulder 56 inner sealing surface 58 of the sealing membrane 43 is held stationary by a bottom 38 of the valve pot 36 supporting ring 45, in the embodiment of Figure 2, the radially inner annular sealing surface 158 of a compression spring 166th pressed against the annular shoulder 156.
  • the compression spring 166 which rests on the bottom part 138 is supported so adjusted that when in the container interior prevailing negative pressure, the ring sealing surface 158 of the vacuum valve body 113 of the annular shoulder 156 against the action of the compression spring 166 lifts, so that a pressure compensation can take place.
  • the coolant will heat up, causing the temperature or pressure in the reservoir to rise.
  • the transmission element 54, 154 which is connected to the drive 14, 114, left half-section, the diaphragm 50 is deflected and increased against the action of the compression spring 44 in the direction of arrow B axially, while in the embodiment according to FIG Figure 2, left half section, due to the increase in temperature of the expansion expands and the thermal capsule 150 axially against the action of the compression spring 144 in the direction of arrow B expands.
  • the locking plate 27, 127 is raised in the direction of arrow B while compressing the compression spring 44, 144, so that the fingers 28, 128 come free in the axial direction between the retaining fingers 30, 130.

Abstract

A sealing lid for the fixed nozzle of a container, particularly a motor vehicle radiator, comprising an outer part and an inner part. The outer part of the lid is provided with a sealing element for the container nozzle and a grip element which is rotatable in relation thereto. A torsional stop acts between the grip element and the sealing element of the outer part of the lid. The inner part of the lid is provided with a flow connection between the inside and outside of the container and a valve system opening and closing the flow connection. The torsional stop which can be disengaged by applying prestress to a spring or is disengaged, can be engaged by a pressure-controlled drive in the form of a membrane. The drive is positioned in the outer part of the lid and is provided with an elongate pressure-transmitting element which penetrates the pressure relief valve body in the lid axis and extends into the area of the inner part of the lid, which is connected to the container nozzle so as to interact therewith. The suction relief valve body is arranged concentrically to the lid axis.

Description

Die vorliegende Erfindung bezieht sich auf einen Verschlussdeckel für einen ortsfesten Stutzen eines Behälters, insbesondere Kraftfahrzeugkühlers, nach dem Oberbegriff des Anspruchs 1.The present invention relates to a closure cap for a stationary necking of a container, in particular motor vehicle radiator, according to the preamble of claim 1.

Bei einem derartigen aus der DE 197 53 597 A1 bekannten Verschlussdeckel ist die Verdrehsicherung zwischen Verschlusselement und Griffelement durch einen axialen Kopplungsbolzen gebildet, der von einer temperaturabhängig arbeitenden Federanordnung beaufschlagt ist.In such a from the DE 197 53 597 A1 Known closure lid, the rotation between the closure element and grip element is formed by an axial coupling pin, which is acted upon by a temperature-dependent working spring arrangement.

Bei einem aus der DE 199 23 775 A1 des Weiteren bekannten Verschlussdeckel ist die Verdrehsicherung durch einen axial bewegbaren und innerhalb des Griffelements angeordneten Bügel gebildet, der von einem thermischen Antrieb in Form eines Dehnstoffelementes betätigt ist.At one of the DE 199 23 775 A1 Further known closure lid, the rotation is formed by an axially movable and arranged within the handle member bracket, which is actuated by a thermal drive in the form of a Dehnstoffelementes.

In beiden bekannten Fällen ist es schwierig, die konkret im Behälter bestehende Wärme ohne größere Temperaturverluste an die durch Wärme beeinflussbare Verdrehsicherung zu bringen. Dies ist nicht zuletzt durch die im Wege zwischen Behälterinnerem und Verdrehsicherung angeordnete Ventilanordnung in Form eines Überdruck- und eines Unterdruckventils schwierig zu gestalten. Entsprechendes gilt auch bei solchen Verschlussdeckeln, die, wie bereits vorgeschlagen, mit einer druckgesteuerten Verdrehsicherung arbeiten.In both known cases, it is difficult to bring the existing concrete heat in the container without major temperature losses of the heat-influenceable against rotation. This is not least due to the arranged in the way between container interior and rotation valve arrangement in the form of an overpressure and a vacuum valve difficult to make. The same applies to such caps, which, as already proposed, work with a pressure-controlled rotation.

Aufgabe der vorliegenden Erfindung ist es, einen Verschlussdeckel für einen ortsfesten Stutzen eines Behälters, insbesondere Kraftfahrzeugkühlers, der eingangs genannten Art zu schaffen, an dessen Verdrehsicherung in einfacherer Weise und ohne unzulässig hohe Verluste die im Behälterinneren vorhandene Temperatur bzw. der im Behälterinneren vorhandene Druck an die Verdrehsicherung bzw. deren Antrieb herangebracht werden kann.Object of the present invention is to provide a closure cap for a stationary neck of a Container, in particular motor vehicle radiator, of the type mentioned above, at whose rotation in a simpler manner and without unduly high losses present in the container interior temperature or existing in the container interior pressure to the rotation or their drive can be brought.

Zur Lösung dieser Aufgabe sind bei einem Verschlussdeckel für einen ortsfesten Stutzen eines Behälters, insbesondere Kraftfahrzeugkühlers, der genannten Art die im Anspruch 1 angegebenen Merkmale vorgesehen.To solve this problem, the features specified in claim 1 are provided with a closure cap for a stationary neck of a container, in particular motor vehicle radiator, of the type mentioned.

Durch die erfindungsgemäßen Maßnahmen ist erreicht, dass das temperaturabhängig oder druckabhängig arbeitende Antriebselement in Form einer Dehnstoffkapsel bzw, einer Membran die im Behälterinneren herrschende Temperatur bzw. den im Behälterinneren herrschenden Druck unmittelbar, ohne Verluste und unverzögert aufnehmen kann. Die Übertragung der Temperatur- bzw. Druckverhältnisse im Behälterinneren kann auf kürzestem und direktem Wege unmittelbar im Zuge der Deckelachse erfolgen, ohne dass Nachteile in der Wirkung des Überdruckventilkörpers und insbesondere in der Wirkung des Unterdruckventilkörpers in Kauf zu nehmen sind. Durch die konzentrische Anordnung des Unterdruckventilkörpers ist außerdem eine kurzbauende Ausgestaltung des Deckelinnenteils gegeben.By the measures according to the invention it is achieved that the temperature-dependent or pressure-dependent operating element in the form of a Dehnstoffkapsel or, a membrane, the temperature prevailing inside the container or the pressure prevailing in the container interior directly, without losses and without delay. The transmission of the temperature or pressure conditions in the container interior can be done in the shortest and most direct way directly in the course of the lid axis without disadvantages in the action of the pressure relief valve body and in particular in the action of the vacuum valve body are to be accepted. Due to the concentric arrangement of the vacuum valve body also a kurzbauende design of the inner lid part is given.

Gemäß einem ersten bevorzugten Ausführungsbeispiel vorliegender Erfindung entsprechend den Merkmalen des Anspruchs 2 ist der Raum innerhalb des Deckels, d. h. zwischen Griffelement und Verschlusselement in vorteilhafter Weise für den Unterdruckventilkörper genutzt. Eine Bauhöhenvergrößerung ergibt sich dadurch nicht.According to a first preferred embodiment of the present invention according to the features of claim 2, the space inside the lid, i. H. used between handle element and closure element in an advantageous manner for the vacuum valve body. An increase in height does not result.

Vorteilhafte Ausgestaltungen hierzu sind durch die Merkmale nach Anspruch 3 und/oder 4 gegeben.Advantageous embodiments of this are given by the features of claim 3 and / or 4.

Gemäß einem zweiten bevorzugten Ausführungsbeispiel vorliegender Erfindung entsprechend den Merkmalen des Anspruchs 5 ist der Unterdruckventilkörper im Zuge des Druck- oder Temperaturübertragungselementes angeordnet. Auch dadurch ergibt sich keine Vergrößerung der Bauhöhe.According to a second preferred embodiment of the present invention according to the features of claim 5, the vacuum valve body is arranged in the course of the pressure or temperature transmission element. This also does not increase the height.

In bevorzugter Weise sind dabei die Merkmale nach Anspruch 6 vorgesehen, so dass sich eine vereinfachte konstruktive Ausführung und ein vereinfachter Einbau des Unterdruckventilkörpers in Verbindung mit dem Überdruckventil ergibt.In a preferred manner, the features according to claim 6 are provided so that there is a simplified structural design and a simplified installation of the vacuum valve body in conjunction with the pressure relief valve.

Während die letztgenannte Ausgestaltung des Unterdruckventilkörpers in Integration mit dem Überdruckventil in vorteilhafter Weise sowohl beim Druck- als auch beim temperaturgesteuerten Antrieb der Verdrehsicherung anwendbar und möglich ist, ist der Einbau bzw. die Verwendung des zwischen Griffelement und Verschlusselement angeordneten Unterdruckventilkörpers insbesondere bei der druckgesteuerten Ausgestaltung der Verdrehsicherung von Vorteil.While the latter embodiment of the negative pressure valve body in integration with the pressure relief valve in both pressure and temperature-controlled drive the rotation is advantageously applicable and possible, the installation or the use of the arranged between the handle element and closure element vacuum valve body, in particular in the pressure-controlled embodiment of Anti-rotation advantage.

Eine vorteilhafte Ausgestaltung des Druck- bzw. Temperaturübertragungselementes ergibt sich nach den Merkmalen des Anspruchs 7.An advantageous embodiment of the pressure or temperature transmission element results from the features of claim 7.

Bevorzugte und vorteilhafte Ausgestaltungen hinsichtlich der Integration von Unterdruckventilkörper und Überdruckventilkörper ergeben sich aus den Merkmalen eines oder mehrerer der Ansprüche 8 bis 10.Preferred and advantageous embodiments with regard to the integration of vacuum valve body and pressure relief valve body result from the features of one or more of claims 8 to 10.

Weitere Ausgestaltungen von Druckübertragungselement, dessen Membran bzw. der Verdrehsicherung ergeben sich aus den Merkmalen eines oder mehrerer der Ansprüche 12 bis 16.Further embodiments of the pressure transmission element, the membrane or the rotation lock result from the features of one or more of claims 12 to 16.

Weitere Einzelheiten der Erfindung sind der folgenden Beschreibung zu entnehmen, in der die Erfindung anhand der in der Zeichnung dargestellten Ausführungsbeispiele näher beschrieben und erläutert ist.Further details of the invention are the following Description in which the invention with reference to the embodiments illustrated in the drawings is described and explained in more detail.

Es zeigen:

Figur 1
in schematischer längsgeschnittener Darstellung einen Verschlussdeckel für einen Kraftfahrzeugkühler mit druckgesteuerter Verdrehsicherung gemäß einem ersten Ausführungsbeispiel vorliegender Erfindung, wobei rechter und linker Halbschnitt jeweils eine der beiden Endpositionen darstellen, und
Figur 2
eine der Figur 1 entsprechende Darstellung, jedoch bei einem Verschlussdeckel mit temperaturgesteuerter Verdrehsicherung gemäß einem zweiten Ausführungsbeispiel vorliegender Erfindung.
Show it:
FIG. 1
in a schematic longitudinal sectional view of a closure cap for a motor vehicle radiator with pressure-controlled rotation in accordance with a first embodiment of the present invention, wherein right and left half section each represent one of the two end positions, and
FIG. 2
a representation corresponding to Figure 1, but in a closure lid with temperature-controlled anti-rotation device according to a second embodiment of the present invention.

Der in der Zeichnung gemäß zweier Ausführungsbeispiele dargestellte Verschlussdeckel 10 bzw. 110 besitzt eine Überdruck-/ Unterdruckventilanordnung, die einen Überdruckventilkörper 12 bzw. 112 und einen Unterdruckventilkörper 13 bzw. 113 aufweist, welche beim Ausführungsbeispiel der Figur 1 durch an verschiedenen Stellen angeordnete Bauteile und beim Ausführungsbeispiel der Figur 2 durch miteinander verbundene bzw. ineinander integrierte Bauteile gebildet sind. Der Öffnungsdruck des Überdruckventilkörpers 12, 112 ist mittels einer Schraubendruckfeder 44, 144 ebenso wie der Öffnungsdruck des Unterdruckventilkörpers 13, 113 mittels einer Schraubendruckfeder 66, 166 fest eingestellt.The closure lid 10 or 110 shown in the drawing according to two embodiments has an overpressure / vacuum valve assembly having a pressure relief valve body 12 and 112 and a vacuum valve body 13 and 113, which in the embodiment of Figure 1 by arranged at different locations components and the Embodiment of Figure 2 are formed by interconnected or nested components. The opening pressure of the pressure relief valve body 12, 112 is fixed by means of a helical compression spring 44, 144 as well as the opening pressure of the negative pressure valve body 13, 113 by means of a helical compression spring 66, 166.

Gemäß der zeichnerischen Darstellung besitzt der bei beiden Ausführungsbeispielen gleiche Außendeckel 16 bzw. 116 des Verschlussdeckels 10 bzw. 110 ein Verschlusselement 17, 117, das hier in Form eines Außengewindeelementes zum Auf- und Abschrauben des Verschlussdeckels von der Öffnung eines hier nicht dargestellten Stutzens eines Kraftfahrzeugkühlers oder sonstigen Behälters dient, und ein Griffelement 18, 118, das gegenüber dem Verschlusselement 17, 117 verdrehbar und mittels einer bei beiden Ausführungsbeispielen gleichen Verdrehsicherung 19, 119 mit diesem unverdrehbar verbindbar ist. Ein Antrieb 14, 114 zum Entkuppeln der Verdrehsicherung 19, 119 ist wie die letztere selbst in einem Raum zwischen dem Griff- und dem Verschlusselement 18 und 17 bzw. 118 und 117 angeordnet. Es versteht sich, dass das Verschlusselement 17, 117 statt als Außengewindeelement als Bajonettverschlusselement ausgebildet sein kann.According to the drawing, the same in both embodiments outer cover 16 and 116 of the Closure lid 10 and 110, a closure member 17, 117, which serves here in the form of an external thread member for screwing and unscrewing the closure lid from the opening of a neck of a motor vehicle radiator or other container, not shown here, and a handle member 18, 118 opposite the closure element 17, 117 rotatable and by means of a same in both embodiments anti-rotation 19, 119 with this non-rotatably connected. A drive 14, 114 for decoupling the anti-rotation device 19, 119 is like the latter itself arranged in a space between the handle and the closure element 18 and 17 or 118 and 117. It is understood that the closure element 17, 117 may be formed instead of a male thread element as a bayonet closure element.

Das Verschlusselement 17, 117 besitzt einen mit einer axialen Durchbrechung versehenen Zwischenboden 21, 121, an dessen Unterseite eine Außengewindehülse 23, 123 und an dessen Oberseite eine Verbindungshülse 24, 124 axial absteht, über deren radialen Flansch 22, 122 das Verschlusselement 17, 117 am Griffelement 18, 118 verdrehbar, jedoch axial unbeweglich hängend gehalten ist. Das Griffelement 18, 118 untergreift außenrandseitig den Flansch 22, 122 der Verbindungshülse 24, 124 des Verschlusselementes 17, 117 und besitzt mittig einen nach axial innen abstehenden Führungsring 25, 125, innerhalb dessen eine Druckfeder 26, 126 aufgenommen ist, die sich einenends an der Innenseite des Griffelements 18, 118 und andernends an einer Sperrplatte 27, 127 der Verdrehsicherung 19, 119 abstützt. Die Sperrplatte 27, 127 ist in beiden axialen Positionen mit dem Verschlusselement drehfest verbunden, und zwar durch äußere axial nach unten abstehende Klauen 29, 129, die in axiale Nuten 31, 131 des Verschlusselements 17, 117 ständig eingreifen. Die Sperrplatte 27, 127 besitzt außerdem außenumfangsseitig radial abstehende Finger 28, 128, die in einer Endposition (rechter Halbschnitt) zwischen vom Griffelement 18, 118 radial nach Innen abstehende Haltefinger 30, 130 greifen. In dieser Stellung ist die Verdrehsicherung 19, 119 nicht nur mit dem Verschlusselement 17, 117 sondern auch mit dem Griffelement 18, 118 drehfest verbunden, was ein Auf- und Abschrauben des Verschlussdeckels 10, 110 auf den bzw. vom nicht dargestellten Behälterstutzen möglich macht. Wie noch zu zeigen sein wird, ist die Verdrehsicherung 19, 119 entgegen der Wirkung der Druckfeder 26, 126 axial derart bewegbar, dass die Finger 28, 128 aus den Zwischenräumen zwischen den Haltefingern 30, 130 freikommen (linker Halbschnitt), so dass der Drehschluss zwischen Verdrehsicherung 19, 119 und Griffelement 18, 118 aufgehoben wird, was zu einer Leerlaufdrehung des Griffelements 18, 118 auf dem Verschlusselement 17, 117 führt und ein Abschrauben des Verschlussdeckels 10, 110 vom Behälterstutzen verhindert.The closure element 17, 117 has an intermediate bottom 21, 121 provided with an axial opening, on whose underside an externally threaded sleeve 23, 123 and on its upper side a connecting sleeve 24, 124 projects axially, via the radial flange 22, 122 of the closure element 17, 117 on Handle member 18, 118 rotatable, but is held axially immovable hanging. The grip element 18, 118 engages under the outside edge of the flange 22, 122 of the connecting sleeve 24, 124 of the closure element 17, 117 and has centrally in the middle an axially inwardly projecting guide ring 25, 125, within which a compression spring 26, 126 is accommodated, which at one end to the Inside the handle member 18, 118 and the other end on a locking plate 27, 127 of the rotation 19, 119 is supported. The locking plate 27, 127 is rotatably connected in both axial positions with the closure element, by external axially downwardly projecting jaws 29, 129 which engage in axial grooves 31, 131 of the closure member 17, 117 constantly. The locking plate 27, 127 also has outer peripheral side radially projecting fingers 28, 128 which in an end position (right half section) between the handle member 18, 118th radially inwardly projecting retaining fingers 30, 130 engage. In this position, the anti-rotation 19, 119 not only with the closure member 17, 117 but also with the handle member 18, 118 rotatably connected, which makes it possible to screw on and off the closure lid 10, 110 on or from the container neck, not shown. As will be shown, the anti-rotation 19, 119 against the action of the compression spring 26, 126 axially movable so that the fingers 28, 128 free from the spaces between the retaining fingers 30, 130 (left half-section), so that the rotation between anti-rotation 19, 119 and handle member 18, 118 is released, resulting in an idle rotation of the handle member 18, 118 on the closure member 17, 117 and prevents unscrewing of the closure lid 10, 110 from the container neck.

Am Verschlusselement 17, 117 des Deckelaußenteils 16, 116 ist ein den Überdruckventilkörper 12, 112, der Ventilanordnung 11, 111 haltendes Deckelinnenteil 15, 115 hängend gehalten, derart, dass das Deckelinnenteil 15, 115 gegenüber dem Deckelaußenteil 16, 116 axiale unbeweglich, jedoch in Umfangsrichtung verdrehbar ist. Der Deckelinnenteil 15, 115 besitzt einen Ventiltopf 36, 136, der am Verschlusselement 17, 117 hängt und der nicht dargestellte radiale Durchströmöffnungen aufweist. Ein Boden 38, 138 des Ventiltopfes 36, 136 ist mit einer inneren Ausnehmung 39, 139 versehen, um die eine axial nach Innen erhabene Ringdichtfläche 41, 141 vorgesehen ist, auf der Überdruckventilkörper 12, 112 mit einer radial äußeren Dichtfläche 42, 142 einer Dichtmembran 43, 143 unter der Wirkung der eine bestimmte Vorspannung aufweisenden Druckfeder 44, 144 aufliegt. Der Überdruckventilkörper 12, 112 ist etwa hutförmig, wobei die Dichtmembran 43, 143 innerhalb von dessen randseitig axial zum Boden 38, 138 hin umgebogenen Krempe aufgenommen ist. Die Dichtmembran 43, 143, deren Außenumfangsbereich bzw. radial äußere Dichtfläche 42, 142 auf der Ringdichtfläche 41, 141 aufliegt, ist an ihrem Innenumfangsbereich bzw. radial inneren Dichtfläche 58, 158 beim Ausführungsbeispiel der Figur 1 ortsfest gehalten, dagegen beim Ausführungsbeispiel nach Figur 2 unter der Wirkung einer Druckfeder, wie noch zu beschreiben sein wird, öffnenbar gehalten. Die innere mittige Sacklochausnehmung 39, 139 im Boden 38, 138 ist über Verbindungsöffnungen 48, 148 mit dem Innenraum des nicht dargestellten Behälters bzw. dessen Behälterstutzen verbunden.On the closure element 17, 117 of the lid outer part 16, 116 is a the pressure relief valve body 12, 112, the valve assembly 11, 111 holding the lid inner part 15, 115 suspended, such that the inner lid 15, 115 relative to the lid outer part 16, 116 axially immovable, but in Circumferential direction is rotatable. The cover inner part 15, 115 has a valve pot 36, 136, which hangs on the closure element 17, 117 and has the radial flow openings, not shown. A bottom 38, 138 of the valve pot 36, 136 is provided with an inner recess 39, 139 to which an axially inwardly raised annular sealing surface 41, 141 is provided on the pressure relief valve body 12, 112 with a radially outer sealing surface 42, 142 of a sealing membrane 43, 143 under the action of a certain bias having compression spring 44, 144 rests. The pressure relief valve body 12, 112 is approximately hat-shaped, wherein the sealing membrane 43, 143 is received within its edge axially bent towards the bottom 38, 138 toward the brim. The sealing membrane 43, 143, whose outer peripheral region or radially outer sealing surface 42, 142 rests on the annular sealing surface 41, 141 is held stationary at its inner peripheral region or radially inner sealing surface 58, 158 in the embodiment of Figure 1, however, in the embodiment of Figure 2 under the action of a compression spring, as will be described, kept open , The inner central Sacklochausnehmung 39, 139 in the bottom 38, 138 is connected via connecting openings 48, 148 with the interior of the container, not shown, or its container neck.

Der Antrieb 14, 114 für die Verdrehsicherung 19, 119 der zwischen der Sperrplatte 27, 127 und dem Zwischenboden 21, 121 angeordnet ist, ist mit einem langgestreckten Übertragungselement 54, 154 versehen, das sich entlang der Verschlussdeckelachse 55, 155 erstreckt, den Überdruckventilkörper 12, 112 einschließlich der Dichtmembran 43, 143 durchdringt und in oder jenseits einer mittige durchgehenden Bodenöffnung 49, 149 mit dem nicht dargestellten Behälter in Verbindung steht. Das Übertragungselement 54, 154 dient der Übertragung der Druck- oder Temperaturverhältnisse im Behälterinneren auf den druckgesteuerten oder thermisch gesteuerten Antrieb 14, 114 für die Verdrehsicherung 19, 119. Das Übertragungselement 54, 154 ist nach Art eines Hohl- oder Vollstabes ausgebildet, wobei der der Verdrehsicherung 19, 119 zugewandte Abschnitt durchmessergrößer ist als der sich daran anschließende in die Öffnung 49 des Bodens 38, 138 mündende Abschnitt unterhalb des Überdruckventilkörpers 12, 112. An der so gebildeten Ringschulter 56, 156 des Übertragungselementes 54, 154 ist der Innenumfangsbereich bzw. die radial innere Dichtfläche 58, 158 der Dichtmembran 43, 143 des Überdruckventils 12, 112 zumindest dann abdichtend gehalten, wenn im Behälterinneren Normal - oder Überdruck besteht. Im oberen durchmessergrößeren Abschnitt dient das Übertragungselement 54, 154 der Führung einer ihn umgebenden Führungshülse 46, 146 des Überdruckventilkörpers 12, 112.The drive 14, 114 for the anti-rotation device 19, 119 which is arranged between the locking plate 27, 127 and the intermediate bottom 21, 121 is provided with an elongate transmission element 54, 154 which extends along the closure lid axis 55, 155, the pressure relief valve body 12th , 112 including the sealing membrane 43, 143 penetrates and in or beyond a central through bottom opening 49, 149 with the container, not shown, in communication. The transmission element 54, 154 serves to transmit the pressure or temperature conditions in the container interior to the pressure-controlled or thermally controlled drive 14, 114 for anti-rotation 19, 119. The transmission element 54, 154 is formed in the manner of a hollow or solid rod, wherein the Anti-rotation 19, 119 facing portion diameter larger than the adjoining into the opening 49 of the bottom 38, 138 opening portion below the pressure relief valve body 12, 112. On the thus formed annular shoulder 56, 156 of the transmission element 54, 154 is the inner peripheral region or the radially inner sealing surface 58, 158 of the sealing membrane 43, 143 of the pressure relief valve 12, 112 at least held sealingly when there is normal or positive pressure in the container interior. In the upper diameter larger section, the transmission element 54, 154 serves to guide a surrounding guide sleeve 46, 146 of the pressure relief valve body 12, 112.

Beim Ausführungsbeispiel der Figur 1, bei dem der Antrieb 14 druckgesteuert ist, ist das Übertragungselement 54 als Hohlstab mit einer Durchgangsbohrung ausgebildet, deren Zugangsöffnung in der Ebene des Bodens 38 liegt. Der Hohlstab 54 ist dem Boden 38 abgewandt mit einem Flansch 57 versehen, der auf dem Zwischenboden 21 des Verschlusselements 17 aufliegt. Am Flansch 57 ist der Sperrplatte 27 zugewandt eine den Antrieb 14 bildende Membran 50 außenumfangsseitig druckdicht eingespannt gehalten. Die das Behälterinnere gegenüber dem Griffelement 18 druckdicht abdichtende Membran 50 liegt in der im rechten Halbschnitt der Figur 1 dargestellten drucklosen Ausgangsstellung mittig auf dem Flansch 57 auf und überdeckt die Durchgangsbohrung des Hohlstabs 54. Die Membran 50 ist an einem Ringbereich zwischen dem genannten mittigen Bereich 51 und ihrem Einspannbereich mit einer Ringwölbung 52 versehen, die die axiale Auslenkung des mittigen Bereichs 51 der Membran 50 ermöglicht. Der mittige Bereich 51 der Membran 50 ist durch die Wirkung der Druckfeder auf die Sperrplatte 27 auf den Flansch 57 gedrückt.
Bei diesem Ausführungsbeispiel ist der Flansch 57 außenumfangsseitig durch in den Zwischenboden 21 des Verschlusselements 17 eingreifende Haken drehfest gehalten.In the embodiment of Figure 1, in which the drive 14 is pressure-controlled, the transmission element 54 is formed as a hollow rod with a through hole whose access opening is located in the plane of the bottom 38. The hollow rod 54 is facing away from the bottom 38 provided with a flange 57 which rests on the intermediate bottom 21 of the closure element 17. On the flange 57, the blocking plate 27 facing a drive 14 forming membrane 50 is held pressure-tight clamped on the outer peripheral side. The container interior with respect to the grip element 18 pressure-tight sealing membrane 50 is in the right half section of Figure 1 illustrated unpressurized starting position centered on the flange 57 and covers the through hole of the hollow rod 54. The membrane 50 is at an annular region between said central region 51st and its clamping area provided with a ring bulge 52, which allows the axial deflection of the central portion 51 of the membrane 50. The central region 51 of the membrane 50 is pressed by the action of the compression spring on the locking plate 27 on the flange 57.
In this embodiment, the flange 57 is rotatably held on the outer peripheral side by engaging in the intermediate bottom 21 of the closure member 17 hooks.

Beim Ausführungsbeispiel der Figur 2 ist der Antrieb 114 durch eine Thermokapsel 150 gebildet, die außenrandseitig auf dem Zwischenboden 121 des Verschlusselements 117 aufliegt und auf der mittig der mittige Bereich der Sperrplatte 127 unter der Wirkung der Druckfeder 126 aufliegt. Die Thermokapsel 150 geht bodenseitig in einen langgestreckten hohlen, endseitig verschlossenen thermischen Ansatz 154' über, der innerhalb des Hohlstabes 154 angeordnet ist und den Boden 138 des Ventiltopfs 136 überragt. Thermokapsel 150 und Ansatz 154' beinhalten einen Dehnstoff, der sich unter dem Einfluss von Wärme bei Temperaturerhöhung ausdehnt. Der Ansatz 154' kann auch als Vollstab ausgebildet sein und die Wärme vom Behälterinneren auf den Dehnstoff in der Thermokapsel 150 übertragen.In the embodiment of Figure 2, the drive 114 is formed by a thermal capsule 150 which rests on the outer edge side on the intermediate bottom 121 of the closure element 117 and on the center of the central region of the locking plate 127 rests under the action of the compression spring 126. The thermal capsule 150 passes on the bottom side into an elongated, hollow end-capped thermal projection 154 ', which is arranged inside the hollow rod 154 and projects beyond the bottom 138 of the valve plug 136. Thermal capsule 150 and tab 154 'include an expanding agent that expands under the influence of heat as the temperature increases. The approach 154 'may be formed as a solid rod and transfer the heat from the container interior to the expansion material in the thermal capsule 150.

Der Unterdruckventilkörper 13, 113 ist bei den beiden Ausführungsformen in unterschiedlicher Weise ausgebildet. Es versteht sich, dass der jeweils zu einem Ausführungsbeispiel beschriebene Unterdruckventilkörper 13, 113 auch beim jeweils anderen Ausführungsbeispiel verwirklicht werden kann.The vacuum valve body 13, 113 is formed in different ways in the two embodiments. It is understood that the vacuum valve body 13, 113 described in each case for one embodiment can also be realized in the respective other embodiment.

Der in Figur 1 dargestellte Unterdruckventilkörper 13, der als gegenüber dem Überdruckventilkörper 12 separates Bauteil ausgebildet ist, ist in die Sperrplatte 27 der Verdrehsicherung 19 integriert ausgestaltet. Die Sperrplatte 27 besitzt ebenso wie die Membran 50 eine mittige Öffnung 32, die vom Unterdruckventilkörper 13 durchdrungen ist. Der Unterdruckventilkörper 13 besitzt an seinem unteren Ende eine Schulter 67 mit einer Ringdichtfläche 65, die unter der Wirkung der Druckfeder 66 gegen die Unterseite der Membran 50 gedrückt ist. Der von der mit der Ringdichtfläche 65 versehenen Schulter 67 abstehende Kopf 68 des Unterdruckventilkörpers 13, ragt über die Oberseite der Sperrplatte 27 hinaus und ist dort mit einer Hinterschneidung versehen, in der sich die Druckfeder 66 einenends abstützt, während andernends die Druckfeder 66 auf der Oberseite der Sperrplatte 27 liegt. Der Unterdruckventilkörper 13 bewegt sich somit zusammen mit der Sperrplatte 27 in axialer Richtung. In der im rechten Halbschnitt der Figur 1 dargestellten Drehschlussstellung der Sperrplatte 27 taucht die Unterseite der Schulter 67 des Unterdruckventilkörpers 13 in einen Bereich der hier trichterförmig ausgebildeten Durchgangsbohrung des Druckübertragungselementes 54. Auf diese Weise kann bei im Behälterinneren herrschendem Unterdruck der Unterdruckventilkörper 13 mit seiner Ringdichtfläche 65 von der Membran 50 entgegen der Wirkung der Druckfeder 66 abheben, so dass ein Druckausgleich stattfinden kann.The illustrated in Figure 1 vacuum valve body 13, which is formed as compared to the pressure relief valve body 12 separate component, is designed integrated into the locking plate 27 of the rotation 19. The blocking plate 27 has, just like the membrane 50, a central opening 32, which is penetrated by the vacuum valve body 13. The vacuum valve body 13 has at its lower end a shoulder 67 with an annular sealing surface 65, which is pressed under the action of the compression spring 66 against the underside of the membrane 50. The protruding from the provided with the annular sealing surface 65 shoulder 67 head 68 of the vacuum valve body 13, protrudes beyond the top of the locking plate 27 and is there provided with an undercut, in which the compression spring 66 is supported at one end, while the other end, the compression spring 66 on the top the locking plate 27 is located. The negative pressure valve body 13 thus moves together with the locking plate 27 in the axial direction. In the illustrated in the right half section of Figure 1 rotational closure position of the locking plate 27, the underside of the shoulder 67 of the vacuum valve body 13 dips into a region of the here funnel-shaped through hole of the pressure transmission element 54. In this way, in the container interior prevailing negative pressure of the vacuum valve body 13 with its annular sealing surface 65th lift off from the diaphragm 50 against the action of the compression spring 66, so that a pressure equalization can take place.

Der Unterdruckventilkörper 113 gemäß Figur 2 ist in den Überdruckventilkörper 112 bzw. dessen Dichtmembran 143 integriert. Während beim Ausführungsbeispiel der Figur 1 die der an der Ringschulter 56 liegende innere Dichtfläche 58 der Dichtmembran 43 von einem sich am Boden 38 des Ventiltopfs 36 abstützenden Ring 45 ortsfest gehalten ist, ist beim Ausführungsbeispiel der Figur 2 die radial innere Ringdichtfläche 158 von einer Druckfeder 166 gegen die Ringschulter 156 gedrückt. Die Druckfeder 166, die stützt sich dabei am Bodenteil 138 abstützt ist dabei so eingestellt, dass bei im Behälterinneren herrschendem Unterdruck die Ringdichtfläche 158 des Unterdruckventilkörpers 113 von der Ringschulter 156 entgegen der Wirkung der Druckfeder 166 abhebt, so dass ein Druckausgleich stattfinden kann.The vacuum valve body 113 according to FIG. 2 is integrated into the overpressure valve body 112 or its sealing membrane 143. While in the embodiment of Figure 1, the lying on the annular shoulder 56 inner sealing surface 58 of the sealing membrane 43 is held stationary by a bottom 38 of the valve pot 36 supporting ring 45, in the embodiment of Figure 2, the radially inner annular sealing surface 158 of a compression spring 166th pressed against the annular shoulder 156. The compression spring 166, which rests on the bottom part 138 is supported so adjusted that when in the container interior prevailing negative pressure, the ring sealing surface 158 of the vacuum valve body 113 of the annular shoulder 156 against the action of the compression spring 166 lifts, so that a pressure compensation can take place.

Während des Motorbetriebs wird sich die Kühlflüssigkeit erwärmen, so dass im Behälter die Temperatur bzw. der Druck ansteigt. Durch das Übertragungselement 54, 154, das mit dem Antrieb 14, 114 verbunden ist, wird bei Druckerhöhung gemäß Figur 1 linker Halbschnitt, die Membran 50 ausgelenkt und entgegen der Wirkung der Druckfeder 44 in Richtung des Pfeiles B axial bewegt, während sich beim Ausführungsbeispiel gemäß Figur 2, linker Halbschnitt, aufgrund der Temperaturerhöhung der Dehnstoff ausdehnt und die Thermokapsel 150 sich in Richtung des Pfeiles B entgegen der Wirkung der Druckfeder 144 axial dehnt. In beiden Fällen wird die Sperrplatte 27, 127 in Richtung des Pfeiles B unter Zusammendrücken der Druckfeder 44, 144 angehoben, so dass die Finger 28, 128 in axialer Richtung zwischen den Haltefingern 30, 130 freikommen. In diesem Zustand ist die drehfeste Verbindung zwischen Griffelement 18, 118 und Verschlusselement 17, 117 aufgehoben, so dass das erstere gegenüber dem letzteren hohl dreht. Diese Lehrlaufverbindung zwischen Griffelement 18, 118 und Verschlusselement 17, 117 verhindert ein Abschrauben des Verschlussdeckels 10, 110 vom Behälterstutzen. Ergeben sich wieder normale Ausgangswerte von Druck bzw. Temperatur im Behälterinneren gelangt die Verdrehsicherung 19, 119 unter der Wirkung der Druckfeder 44, 144 in ihre Ausgangsstellung zurück, so dass der Verschlussdeckel 10, 110 durch die drehfeste Verbindung von Griffelement 18, 118 und Verschlusselement 17, 117 wieder abgeschraubt werden kann.During engine operation, the coolant will heat up, causing the temperature or pressure in the reservoir to rise. By the transmission element 54, 154, which is connected to the drive 14, 114, left half-section, the diaphragm 50 is deflected and increased against the action of the compression spring 44 in the direction of arrow B axially, while in the embodiment according to FIG Figure 2, left half section, due to the increase in temperature of the expansion expands and the thermal capsule 150 axially against the action of the compression spring 144 in the direction of arrow B expands. In both cases, the locking plate 27, 127 is raised in the direction of arrow B while compressing the compression spring 44, 144, so that the fingers 28, 128 come free in the axial direction between the retaining fingers 30, 130. In this state, the rotationally fixed connection between the grip element 18, 118 and closure element 17, 117 is released, so that the former turns hollow relative to the latter. This course connection between grip element 18, 118 and closure element 17, 117 prevents unscrewing of the closure lid 10, 110 from the container neck. Are returned to normal output values of pressure or temperature in the container interior reaches the rotation 19, 119 under the action of the compression spring 44, 144 back to their original position, so that the closure lid 10, 110 through the rotationally fixed connection of handle member 18, 118 and closure element 17th , 117 can be unscrewed again.

Claims (16)

  1. A sealing cap (10, 110), for a fixed connecting piece of a container, in particular a motor vehicle radiator, having a cap exterior part (16, 116) and a cap interior part (15, 115), whereby the cap exterior part (16, 116) has a sealing element (17, 117) for the container connecting piece and a grip element (18, 118) that can rotate relative to the former, a torsional stop (19, 119) functioning between the grip element and the sealing element (17, 117) of the cap exterior part (16, 116), whereby the cap interior part (15, 115) has a flow connection between the interior and the exterior of the container and a valve arrangement for releasing and blocking the flow connection, said valve arrangement having an axially movable overpressure valve element (12, 112), which is pressed with biasing in the direction of the interior of the container against a sealing seat on the cap interior part (15, 115) such that it can be lifted off from the sealing seat when a limit value of the container interior pressure is exceeded, and an underpressure valve element (13, 113), wherein the torsional stop (19, 119), which can be or is engaged with spring biasing, can be disengaged by a thermally or pressure-controlled drive (14, 114) in the form of a expansion capsule (150) or a diaphragm (50), the drive (14, 114) is arranged in the cap exterior part (16, 116) and is provided with an elongated pressure or temperature transmitting element (54, 154) which penetrates the overpressure valve element (12, 112) in the cap axis (55, 155) and extends into the area of the cap interior part (15, 115), which has a working connection with the connecting piece of the container, and the underpressure valve element (13, 113) is arranged so as to be concentric with respect to the cap axis (55, 155).
  2. The sealing cap as recited in Claim 1, wherein the underpressure valve element (13, 113) is integrated into the torsional stop (19, 119).
  3. The sealing cap as recited in Claims 1 and 2, wherein the torsional stop (19, 119) is formed by a blocking plate (27, 127), in whose central area, which is facing the pressure-controlled or thermally-controlled drive (14, 114), the underpressure valve element (13, 113) is axially supported under the influence of a spring.
  4. The sealing cap as recited in Claim 3, wherein the underpressure valve element (13) is supported in a central borehole of the blocking plates (27) so as to be axially movable, whereby a pressure spring (56), which functions between the underpressure valve element (13) and the upper side of the blocking plate (27), presses an annular sealing surface (65) of the underpressure valve element (13) against the lower side of the blocking plate (27).
  5. The sealing cap as recited in Claim 1, wherein the underpressure valve element (13, 113) surrounds the elongated pressure or temperature transmitting element (54, 154), preferably in the vicinity of the free end of the cap interior part (15, 115).
  6. The sealing cap as recited in Claim 1 or 5, wherein the underpressure valve element (13, 113) is integrated into the overpressure valve element (12, 112).
  7. The sealing cap as recited in at least one of the preceding claims, wherein the pressure or temperature transmitting element (54, 154) is configured as a hollow or solid bar, along whose exterior circumference the overpressure valve element (12, 112) that is biased by an axial pressure spring (44, 144) is guided.
  8. The sealing cap as recited in at least one of the preceding claims, wherein the exterior circumferential area of a sealing diaphragm (43, 143) that can be lifted off is arranged between an annular sealing seat for the overpressure valve element (12, 112) on a centrally perforated base (21, 121) of the cap interior part (15, 150) and the lower side of the overpressure valve element (12, 112) that is facing away from the axial pressure spring (44, 144), the interior circumferential area of said exterior circumferential area continuously creating an axially effective overpressure seal for the overpressure valve element (12, 112) between the overpressure valve element (12, 112) and the elongated pressure or temperature transmitting element (54, 154).
  9. The sealing cap as recited in Claims 6 to 8, wherein the interior circumferential area (158) of the sealing diaphragm (143) can be lifted off in opposition to the action of a pressure spring (166) that operates in the direction of an overpressure.
  10. The sealing cap as recited in Claim 9, wherein the interior circumferential area (158) of the sealing diaphragm (143) is pressed against a shoulder (156) of the elongated pressure or temperature transmitting element (154), whereby the pressure spring (166) is supported on the base (138) of the cap interior part (15, 115).
  11. The sealing cap as recited in at least one of Claims 7 to 10, wherein the pressure or temperature transmitting element (54, 154) penetrates the base (38, 138) of the cap interior part (15, 115).
  12. The sealing cap as recited in at least one of Claims 7 to 11, wherein the pressure transmitting element (54) has a through borehole (56), whose input side facing the container discharges in the base (38) of the cap interior part (15) and whose exterior side that is facing away from the container is covered by the diaphragm (50).
  13. The sealing cap as recited in Claims 1, 4, and 12, wherein the diaphragm (50) with its central area (51) is situated opposite the output side of the through borehole (56), is clamped in a pressure-tight manner on the exterior circumferential side, and is situated on the interior circumferential side between the lower side of the blocking plate (27) and the annular sealing surface of the underpressure valve element (13).
  14. The sealing cap as recited in Claim 13, wherein the diaphragm (50) is clamped on the circumferential area of an end-face flange (57) of the pressure transmitting element (54).
  15. The sealing cap as recited in at least one of the preceding claims, wherein the cap interior part (15, 115) has a centrally perforated intermediate base (21, 121), on whose upper side the flange (57) that is provided with the diaphragm (50), or the expansion capsule (150), makes contact, and at whose lower side the valve arrangement is attached.
  16. The sealing cap as recited in Claim 3, wherein the blocking plate (27, 127) is connected to the sealing element (17, 117) in a non-rotatable but axially movable manner, and fingers (28, 128) of the blocking plate (20; 27) that point radially to the outside grasp between the fingers (30, 130) of the grip element (18, 118) that point radially to the inside.
EP03702501A 2002-01-24 2003-01-23 Sealing lid for motor vehicle radiator Expired - Lifetime EP1468172B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20201082U 2002-01-24
DE20201082U DE20201082U1 (en) 2002-01-24 2002-01-24 Cover for automobile radiator
PCT/EP2003/000639 WO2003062613A1 (en) 2002-01-24 2003-01-23 Sealing lid for motor vehicle radiator

Publications (2)

Publication Number Publication Date
EP1468172A1 EP1468172A1 (en) 2004-10-20
EP1468172B1 true EP1468172B1 (en) 2008-01-02

Family

ID=7966948

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03702501A Expired - Lifetime EP1468172B1 (en) 2002-01-24 2003-01-23 Sealing lid for motor vehicle radiator

Country Status (5)

Country Link
US (1) US7380681B2 (en)
EP (1) EP1468172B1 (en)
AT (1) ATE382782T1 (en)
DE (2) DE20201082U1 (en)
WO (1) WO2003062613A1 (en)

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Also Published As

Publication number Publication date
DE20201082U1 (en) 2003-06-05
DE50308910D1 (en) 2008-02-14
US7380681B2 (en) 2008-06-03
EP1468172A1 (en) 2004-10-20
US20050082289A1 (en) 2005-04-21
ATE382782T1 (en) 2008-01-15
WO2003062613A1 (en) 2003-07-31

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