EP0388765A1 - Bouchon pour un goulot de réservoir - Google Patents

Bouchon pour un goulot de réservoir Download PDF

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Publication number
EP0388765A1
EP0388765A1 EP90104760A EP90104760A EP0388765A1 EP 0388765 A1 EP0388765 A1 EP 0388765A1 EP 90104760 A EP90104760 A EP 90104760A EP 90104760 A EP90104760 A EP 90104760A EP 0388765 A1 EP0388765 A1 EP 0388765A1
Authority
EP
European Patent Office
Prior art keywords
sealing membrane
closure
spring
lid
sealing
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.)
Granted
Application number
EP90104760A
Other languages
German (de)
English (en)
Other versions
EP0388765B1 (fr
Inventor
Konrad Scharrer
Josef Weichselbaumer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BLAU GMBH FABRIK FUER KRAFTFAHRZEUGTEILE
Audi AG
Original Assignee
B L A U GmbH
Audi AG
Blau KG
Blau KG Fabrik fuer Kraftfahrzeugteile
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by B L A U GmbH, Audi AG, Blau KG, Blau KG Fabrik fuer Kraftfahrzeugteile filed Critical B L A U GmbH
Publication of EP0388765A1 publication Critical patent/EP0388765A1/fr
Application granted granted Critical
Publication of EP0388765B1 publication Critical patent/EP0388765B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01P11/0238—Closure caps with overpressure valves or vent valves
    • 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

Definitions

  • the invention relates to a closure cap for a container neck, in particular a radiator cap, comprising a lid cap and a pot-shaped lid inner part connected to it, with a radially outwardly directed ring flange which carries an annular seal intended to rest on the neck edge, and with a pressure-vacuum valve comprising a ring-shaped one Sealing membrane, which, with its inner surface facing the container interior, rests against an annular sealing surface of the inner part of the lid and against a closing part which is smaller in diameter and covers the central opening of the sealing membrane and which is tensioned against the inner surface of the sealing membrane by a vacuum spring which is supported on the bottom of the inner part of the lid, and on the outward-facing surface of a support disc rests under the pressure of a pressure spring.
  • the invention has for its object to provide a cover of the type mentioned, with which it can be achieved in a simple manner and without the use of special springs that the pressure-vacuum valve opens at a pressure value which is within narrowly specified limits.
  • bias of the pressure spring is adjustable. This allows the opening pressure of the overpressure-vacuum valve to be set precisely. The tolerances of the springs used are irrelevant.
  • the adjustment of the prestress of the pressure spring can be achieved in a simple manner in that the pressure spring formed by a helical pressure spring rests with its end remote from the sealing membrane on a support body which is provided with a thread and in engagement with a counter thread on the inner cover part parallel to the axial direction of the Overpressure spring is adjustable.
  • the support body is preferably formed by a ring with a U-shaped profile, the radially inner wall of which engages in the interior of the helical compression spring encloses a polygonal opening surface, the radially outer wall of which carries the thread on its outside and which is in a cylindrical bearing the counter thread Approach to the inside of the lid partly screwable.
  • the radially inner wall can be designed, for example, as a hexagonal surface, so that the support body can be conveniently rotated with a hexagonal key that engages in the opening, and the tension of the spring can thus be adjusted.
  • the helical compression spring used as an overpressure spring is ground on its end faces in order to achieve a flat contact surface.
  • the pressure spring with its end facing the sealing membrane is supported on a plate which is mounted on the flexible support plate by means of a ball joint.
  • the plate can have a spherical shell-shaped elevation in its center, which engages in a corresponding ball socket-like recess in the support disk.
  • the radiator cap shown comprises an outer cap 10, which is generally made of plastic, and a cap inner part 12, which is connected to it in a manner not shown, generally designated 12.
  • the cap inner part consists of a pot-shaped lower section 14 with a radially outwardly directed flange 16, which is a Ring seal 18 supports the Support is determined on the edge of a container neck, not shown, to be closed by the radiator cap.
  • the ring seal 18 is held by axially parallel ribs 20 on the inside of the cap 10, so that it can not detach from the flange 16.
  • the lower part 14, which is made of sheet metal is connected to an upper part 22, which is also made of sheet metal and consists of a cylindrical section 24 and a ring 26 projecting radially outward. This ring 26 lies on the side of the flange 16 facing away from the ring seal and is firmly connected to the lower part 14 by flanging the flange edge inwards, as is shown in the figure.
  • the cylindrical section 24 is provided with an internal thread 28.
  • a ring 30 carrying an external thread and having a U-shaped cross-sectional profile is screwed into the thread attachment thus formed.
  • the radially inner wall 32 of the ring 30 is designed as a hexagon socket surface, so that a hexagon wrench can be inserted into the central opening of the ring, with the aid of which the ring can be screwed into the threaded attachment 24.
  • the ring 30 serves in the manner shown to support a helical compression spring 34 which is supported with its end remote from the ring 30 on a plate 36. In its center, this has a spherical head-shaped shape 38 which engages in a ball socket 40 of a flexible support disk 42.
  • the flexible support disk 42 lies against an annular sealing membrane 44.
  • the sealing membrane 44 rests on an annular rib 46 which is formed on a radially inwardly directed shoulder 48 at the lower end of the inner cover part 12.
  • the ring rib 46 is integrally formed with a plastic part 50, which is formed by overmolding the lower end of the lower part 14.
  • the central opening 52 of the annular sealing membrane 44 is closed by a flat tin pot 54 which is surrounded by a helical compression spring 56 which is supported on its radially outward edge and which is supported with its opposite end on a radially inward section 58 of the plastic part 50.
  • the radiator cap described so far works as follows when exposed to negative pressure or excess pressure in the container closed by it:
  • An overpressure prevailing in the container interior also acts against the spring cup 54 and lifts it together with the sealing membrane 44 of the support disk 42 and the plate 36 against the force of the pressure spring 44 from the annular rib 46, so that the bottom opening 60 of the inner cover part and the openings 66 in the upper part of the same a connection between the container interior and the outside world is created.
  • the pressure-vacuum valve thus formed opens at a more or less strong pressure in the interior of the container. The opening pressure can thus be set very precisely for the installed springs and is therefore no longer dependent on the spring tolerances.
  • annular bead 68 is formed in the support disk 42 near the edge thereof, which lies on the sealing membrane and whose average diameter corresponds to the average diameter of the annular rib 46.
  • This ring bead 48 ensures that the pressure of the support disk 42 is exerted on the sealing membrane 44 in the region of the ring rib 46.
  • centering ribs 70 are formed on the inside of the pot-shaped lower part 14 of the inner cover part 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Closures For Containers (AREA)
  • Safety Valves (AREA)
EP90104760A 1989-03-23 1990-03-13 Bouchon pour un goulot de réservoir Expired - Lifetime EP0388765B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8903708U DE8903708U1 (de) 1989-03-23 1989-03-23 Verschlußdeckel für einen Behälterstutzen
DE8903708U 1989-03-23

Publications (2)

Publication Number Publication Date
EP0388765A1 true EP0388765A1 (fr) 1990-09-26
EP0388765B1 EP0388765B1 (fr) 1994-01-19

Family

ID=6837518

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90104760A Expired - Lifetime EP0388765B1 (fr) 1989-03-23 1990-03-13 Bouchon pour un goulot de réservoir

Country Status (6)

Country Link
US (1) US5036888A (fr)
EP (1) EP0388765B1 (fr)
JP (1) JPH0356258A (fr)
DD (1) DD297797A5 (fr)
DE (2) DE8903708U1 (fr)
ES (1) ES2050291T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0520135A1 (fr) * 1991-06-26 1992-12-30 Längerer & Reich GmbH & Co. Dispositif de soupape de surpression pour un circuit de refroidissement d'un moteur à combustion interne refroidi par liquide

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9013214U1 (de) * 1990-09-18 1991-03-14 Blau KG, 4018 Langenfeld Verschlußdeckel für einen Behälter, insbesondere Kraftfahrzeugkühler
DE9016938U1 (de) * 1990-12-14 1991-03-07 Blau Fabrik für Fahrzeugteile Gesellschaft m.b.H., Salzburg Verschlußdeckel für die Öffnung eines Behälters, insbesondere Kraftfahrzeugkühlers
JP3118879B2 (ja) * 1991-06-27 2000-12-18 豊田合成株式会社 燃料キャップ
DE19753597A1 (de) * 1997-12-03 1999-06-24 Heinrich Reutter Verschlußdeckel für Kraftfahrzeugkühler
US6532910B2 (en) 2001-02-20 2003-03-18 Volvo Trucks North America, Inc. Engine cooling system
US7152555B2 (en) * 2001-02-20 2006-12-26 Volvo Trucks North America, Inc. Engine cooling system
DE20201082U1 (de) * 2002-01-24 2003-06-05 Reutter, Heinrich, 71336 Waiblingen Verschlussdeckel für Kraftfahrzeugkühler
US8517200B1 (en) * 2008-08-08 2013-08-27 Ron Davis Racing Products, Inc. Decorative radiator cap cover retention system for automotive use
GB2518670B (en) * 2013-09-30 2016-10-05 Ford Global Tech Llc An apparatus and system for detecting a cooling system leak
US20200063638A1 (en) * 2018-08-23 2020-02-27 Hsi-Chang LEE Pressure adjustable radiator cap

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE359598C (de) * 1922-09-25 Paul Belitz Mit Sicherheitsventil versehener Kuehler fuer Verbrennungsmotoren
DE369931C (de) * 1920-05-04 1923-02-24 Marius Jean Baptiste Barbarou Behaelterverschluss
US3061138A (en) * 1957-01-03 1962-10-30 Edelmann And Company E Radiator cap
DE2339477A1 (de) * 1973-08-03 1975-02-20 Blau Kg Kraftfahrzeugtech Anordnung fuer mittels zylinderschloss oder schliesszylindereinsatz zu sichernde verriegelung, insbesondere fuer verschlussdeckel auf behaeltern oder als rohrstutzenabschluss

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD16107A (fr) *
US1839029A (en) * 1930-05-03 1931-12-29 Edward S Horan Radiator
US2203801A (en) * 1936-11-12 1940-06-11 Eaton Mfg Co Closure device for sealed cooling systems
GB1455984A (en) * 1974-09-20 1976-11-17 Blau Kg Kraftfahrzeugtech Closure cap
GB1534318A (en) * 1976-08-12 1978-11-29 Gen Motors France Closure caps
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
US4185751A (en) * 1978-07-31 1980-01-29 Stant Manufacturing Company, Inc. Radiator cap
US4913303A (en) * 1987-06-16 1990-04-03 Stant Inc. Liquid splash control fuel cap

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE359598C (de) * 1922-09-25 Paul Belitz Mit Sicherheitsventil versehener Kuehler fuer Verbrennungsmotoren
DE369931C (de) * 1920-05-04 1923-02-24 Marius Jean Baptiste Barbarou Behaelterverschluss
US3061138A (en) * 1957-01-03 1962-10-30 Edelmann And Company E Radiator cap
DE2339477A1 (de) * 1973-08-03 1975-02-20 Blau Kg Kraftfahrzeugtech Anordnung fuer mittels zylinderschloss oder schliesszylindereinsatz zu sichernde verriegelung, insbesondere fuer verschlussdeckel auf behaeltern oder als rohrstutzenabschluss

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0520135A1 (fr) * 1991-06-26 1992-12-30 Längerer & Reich GmbH & Co. Dispositif de soupape de surpression pour un circuit de refroidissement d'un moteur à combustion interne refroidi par liquide

Also Published As

Publication number Publication date
DD297797A5 (de) 1992-01-23
DE8903708U1 (de) 1990-07-26
EP0388765B1 (fr) 1994-01-19
US5036888A (en) 1991-08-06
JPH0356258A (ja) 1991-03-11
DE59004272D1 (de) 1994-03-03
ES2050291T3 (es) 1994-05-16

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