WO1995014621A1 - Bouchon de fermeture vissable sur un col de reservoir - Google Patents

Bouchon de fermeture vissable sur un col de reservoir Download PDF

Info

Publication number
WO1995014621A1
WO1995014621A1 PCT/EP1994/003862 EP9403862W WO9514621A1 WO 1995014621 A1 WO1995014621 A1 WO 1995014621A1 EP 9403862 W EP9403862 W EP 9403862W WO 9514621 A1 WO9514621 A1 WO 9514621A1
Authority
WO
WIPO (PCT)
Prior art keywords
cap
valve
elements
latching
closure
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.)
Ceased
Application number
PCT/EP1994/003862
Other languages
German (de)
English (en)
Inventor
Gerhard Berrer
Rudolf Wenger
Heiner Reutter
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.)
Reutter Metallwarenfabrik GmbH
Original Assignee
Reutter Metallwarenfabrik GmbH
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
Priority claimed from DE4339663A external-priority patent/DE4339663A1/de
Application filed by Reutter Metallwarenfabrik GmbH filed Critical Reutter Metallwarenfabrik GmbH
Publication of WO1995014621A1 publication Critical patent/WO1995014621A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F01P11/0214—Mounting
    • F01P2011/0228—Sealing
    • 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
    • F01P2011/0252—Venting before 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
    • F01P11/0247—Safety; Locking against opening
    • F01P2011/0266—Safety; Locking against opening activated by pressure

Definitions

  • the present invention relates to a preferably screwable or pluggable and rotatable closure cap to be fastened to a stationary connection piece, for example a motor vehicle radiator, a compensating container for cooling or heating systems or the like, according to the preamble of claim 1.
  • Such caps are used, for example, in motor vehicle cooling systems, either directly as a radiator cap or as a closure of the expansion tank.
  • the closure cover can either be screwed on by means of a thread or can be attached and rotated by means of a bayonet element.
  • the pressure is also generally high due to the high temperature in the cooling system. Even if the temperature in the cooling system is not too high at the time the engine is switched off after switching off the engine, a certain post-heating effect can increase the temperature and thus increase the pressure in the cooling system. If the cap on the cooling system is then removed immediately, there is an acute risk of scalding for the user concerned.
  • the object of the present invention is therefore to provide a closure cap of the type mentioned, which cannot be removed with reasonable effort when the cooling systems are still under pressure, but only when the excess pressure has been completely reduced, and which in a particularly simple manner and is designed to manage with a few additional components.
  • the measures according to the invention create a sealing cover which cannot be removed when there is still a critical high pressure in the cooling system (or in the heating system). This is achieved in that the cap is twisted at excess pressure is inhibited or locked relative to the engaging part, so that the closure cover can only be detached from the stationary connection piece by force. In this way, it is prevented in any case that injuries due to high temperature and the resulting overpressure in the fixed connection piece can occur when the closure cover is opened.
  • the closure lid requires a minimum of additional components and is therefore economical to manufacture.
  • a cost-effective design of the control element is obtained if the features according to claim 2 and / or 4 are provided, advantageous configurations resulting from the features according to claim 3 and / or 5.
  • the steeper the inclined surface the more difficult it is to unscrew and unscrew the cap.
  • the angle of the inclined surfaces should be selected depending on the forces to be expected and the desired size of the escapement to prevent the cap from twisting off.
  • Figure 1 is a left and right of the center line in different planes longitudinal section through a screwed onto a fixed neck of a container cover according to a preferred embodiment of the present invention and 2 shows an enlarged view of a section along the line II-II of FIG.
  • the closure cap 210 shown in the drawing is screwed onto the fixed connection piece 211 of an expansion tank (not shown in detail) of a motor vehicle cooler system.
  • the connector 211 of the expansion tank has two concentric parts, namely on the outside an internally threaded part 213 which screwingly receives an engagement part of the closure cover 210 which is designed as a removal part 221, and an inner neck 216 into which a valve 215 of the closure cover 210 engages.
  • closure cap 210 It is essential to the closure cap 210 according to the invention that it is provided with a pressure-dependent unscrewing lock 220, which ensures that the closure cap 210 can only be completely detached or removed or unscrewed from the relevant stationary connection piece 211 without any significant effort when the expansion tank or the motor vehicle Cooler or the like. Is depressurized.
  • the screw cap 214 of the closure cover 210 is in one piece with the external thread part 221 and is provided at one end, in the drawing the upper end, with a cover plate 222 with a grip strip 223 running diagonally above this.
  • the screw cap 214 is hollow, and in the region of the two outer ends of the grip strip 223, the cavity 224, which is cylindrical per se, is extended by rectangular depressions 225.
  • a valve housing 217 of the valve 215 is rotatable on the screw cap 214 within the screw cap 214 and concentric with the external thread part 221 and is held with an axial play 252, for example in the order of approximately 1.2 mm.
  • the valve 215 can be designed in a manner which is not shown but is known per se as a combined overpressure / underpressure valve which, when the closure cover 210 is screwed onto the fixed socket 211, opens when an excessively high pressure or underpressure occurs and thus protects the cooling system.
  • the valve housing 217 is provided on a front part 228 with an annular groove 226, into which a sealing ring in the form of an O-ring 227 is inserted, which, when the closure cap 210 is completely screwed on, lies sealingly against the smooth inner surface 218 of the neck 216 of the expansion tank.
  • a ring extension 229 of smaller diameter adjoins in one piece, which, for example, has radially projecting cams 231 at four locations uniformly distributed over the circumference, which together with, for example, also four stop lugs 232 , which protrude radially on the inner circumference 218 of the neck 216 of the stationary connecting piece 211, form an anti-rotation device between the neck 216 of the connecting piece 211 and the valve housing 217.
  • the stop lugs 232 in the fixed connecting piece 211 can have lead-in chamfers for the cams 231, which at their front, here the lower end corresponding slopes are provided.
  • valve housing 217 which is rotatably mounted in the screw cap 214 and relative to the latter, is thus retained in the direction of rotation within the fixed connecting piece 211, but is axially movable.
  • the cams 231 and the stop lugs 232 are arranged axially in such a way that the anti-rotation device is in engagement until the external thread part 221 of the closure cover 210 is completely released from the internal thread of the fixed connection piece 211.
  • the overpressure (in the fixed socket 211) acting unscrewing device 220 is provided, which, as will be described, in the case of too high pressure in the socket 211, the unscrewing of the cap 210 inhibits such that that Unscrewing the cap 210 is not accessible without substantial effort or force.
  • the unscrewing device 220 has latching elements 256 on the upper side of the valve body 217 and opposing latching counter-elements 257 on the inner surface of the cover plate 222 of the screw cap 214.
  • the latching elements 256 are in the form of toothed segments along a ring surface 258 of the valve body 217 running near the outer edge region in a large number and arranged evenly distributed over the circumference of the annular surface 258 and molded onto the valve body. They protrude from the valve body 217 towards the screw cap 214 in the axial direction.
  • each latching element 256 is triangular in section, the two flanks having inclined surfaces 59 and 60 having different inclinations and thus different lengths.
  • the steeper inclined surface 259 has an angle of inclination of approximately 40 ° to 50 °, preferably approximately 45 °, while the flatter inclined surface 260 has an angle of approximately 10 ° to 30 ° with respect to the surface of the cover plate 253.
  • the latching counter-elements 257 are likewise arranged in a ring-shaped and evenly distributed arrangement along an annular surface 261 of the underside of the cover plate 222 of the screw cap 214 and preferably also in one piece with the cover plate 222.
  • the latching counter-elements 257 lie directly opposite the latching elements 256 and are likewise designed in the form of toothed segments and, seen in section, have the same triangular shape and thus corresponding steeper and flatter inclined surfaces 262 and 263.
  • the preferred angles of the inclined surfaces 262 and 263 correspond to those of the inclined surfaces 259 and 260.
  • the height 255 of the latching elements 256 and the latching counter elements 257 is approximately 1 in the exemplary embodiment , 0 mm and is thus somewhat less than the above-described game 252 of approximately 1.2 mm.
  • sixteen latching elements 256 for example, but fewer latching counter-elements 257, which are missing in the cavity 225 in the region of the grip strip 223, are provided over the respective circumference of the valve body 217 and screw cap 214.
  • the arrangement of the triangular-shaped latching elements 256 and latching counter-elements 257 is such that when the valve 215 is pushed towards the screw cap 14, as shown in FIG.
  • valve 215 is first in the nozzle 211 inserted, it being possible for the valve 215 to be pressed against the screw cap 214 as shown in FIG. This movement is limited by corresponding stop surfaces 248 and 249, which are arranged concentrically with the latching elements and latching counter-elements. Now the screw cap 214 with its externally threaded part 221 becomes the internally threaded part
  • the flatter inclined surfaces 260 of the latching elements 256 can slide over the flatter inclined surfaces 263 of the latching counter-elements 257 without any significant effort, since with the initial movement the valve 215 axially downwards, i.e. in the stationary connection piece 211 into it, by the height 255 of the latching counter elements 257. This can be repeated with every revolution if the sealing ring 227 opposes any frictional resistance. In this direction, the interlocking locking elements and locking counter-elements act like a puzzle connection.
  • the function of the unscrewing device 220 effected by the latching elements 256 and latching counter-elements 257 is as follows: If there is overpressure in the stationary nozzle 211, the valve 215 is pressed against the screwed-on cap 214, as shown in FIG. 1, so that, as can be seen in FIG is, the locking elements 256 and locking counter-elements 257 engage between each other. If the screw cap 214 is now unscrewed, this can only be done in a small angular range without exerting force until, according to FIG. 2, the steeper inclined surfaces 259 and 262 of latching elements 256 and latching counter-elements 257 adjoin one another issue.
  • a further unscrewing movement of the closure cap 210 is not possible without substantial effort or without force, since due to the steepness of the inclined surfaces and the resulting force vector relationships (high resistance), the valve 215 axially yields into the stationary nozzle 211 against the overpressure acting there with reasonable effort and without the help of a tool.
  • the opening of the closure lid 210 is very much inhibited. This inhibitory effect can only be overcome with violence. Only when the pressure has decayed after the temperature has decayed is it possible to turn the screw cap 214 and to press the valve 215 axially downward, with reasonable, that is to say without substantial effort, even over the steep inclined surfaces 259 and 262, so that the valve Screw cap 214 can be unscrewed from the fixed nozzle 211 without friction.
  • the measures according to the invention can also be implemented in the case of a closure cover which is connected in the manner of a bayonet closure to a connecting piece 211.
  • the engagement part 221 described as a threaded part is designed as a plug-and-turn part, while the screw cap 214 is designed as a plug-in and turn cap.
  • closure cover 210 can be used not only on components of cooler or cooling systems but also on components of heating systems.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Closures For Containers (AREA)

Abstract

Un bouchon de fermeture (210) vissable sur un col fixe (211) de radiateur d'automobile comporte un bouchon vissable (214) et une partie de mise en contact (221) fixée au précédent de façon à ne pas pouvoir tourner, à l'intérieur de laquelle se trouve une soupape (215) de surpression/vide combinée, montée concentriquement et de manière à tourner, face au bouchon (214). A cet effet, la soupape (215) comporte un élément d'étanchéité (227) qui assure une liaison étanche avec le col fixe (211) lors du vissage du bouchon de fermeture (210). Afin qu'un bouchon de fermeture de ce type ne puisse pas être dévissé avec une force raisonnable tant que le système refroidisseur se trouve encore sous surpression, mais uniquement après que cette surpression ait disparu, et que la structure du bouchon de fermeture soit particulièrement simple et ne requiert qu'un nombre réduit d'éléments supplémentaires, il est prévu que la soupape (215) située dans le col fixe (211) soit maintenue en place sans pouvoir tourner et que des éléments d'arrêt (256, 257) ou des contre-éléments d'arrêt (257, 256) faisant saillie dans le sens axial sur la soupape (215) et sur le bouchon (214) et agissant dans le sens circonférentiel puissent être mis en contact sous l'effet de la pression régnant dans la tubulure fixe, et que la soupape (215) puisse être maintenue à l'intérieur du bouchon (214) avec un jeu axial (252).
PCT/EP1994/003862 1993-11-22 1994-11-22 Bouchon de fermeture vissable sur un col de reservoir Ceased WO1995014621A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4339663A DE4339663A1 (de) 1993-11-22 1993-11-22 Auf einen Behälterstutzen aufschraubbarer Verschlußdeckel
DEP4339663.1 1993-11-22
DEG9410556.1U 1994-06-30
DE9410556U DE9410556U1 (de) 1993-11-22 1994-06-30 Auf einem Behälterstutzen befestigbarer Verschlußdeckel

Publications (1)

Publication Number Publication Date
WO1995014621A1 true WO1995014621A1 (fr) 1995-06-01

Family

ID=25931391

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1994/003862 Ceased WO1995014621A1 (fr) 1993-11-22 1994-11-22 Bouchon de fermeture vissable sur un col de reservoir

Country Status (1)

Country Link
WO (1) WO1995014621A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0894955A1 (fr) * 1997-07-30 1999-02-03 BLAU Kunststofftechnik Zweigniederlassung der Tesma Europa GmbH Bouchon de fermeture avec un verrouillage de sécurité pour un réservoir
DE19946845C2 (de) * 1999-09-30 2002-04-18 Blau Kunststofftechnik Zweigni Verschlußdeckel
CN113280409A (zh) * 2021-06-03 2021-08-20 珠海格力电器股份有限公司 一种空调底盘组件、空调室外机和空调器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE684907C (de) * 1936-09-03 1939-12-07 Gen Motors Corp Verriegelungsvorrichtung fuer eine abdrehbare Verschlusskappe von Gefaessen, die innerem UEberdruck ausgesetzt sind, wie beispielsweise bei Kuehlern von Kraftfahrzeugen
EP0163006A1 (fr) * 1982-07-15 1985-12-04 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Circuit de refroidissement à suspension pour des moteurs à combustion interne à refroidissement liquide
EP0360252A2 (fr) * 1988-09-21 1990-03-28 Blau Kg Couvercle de fermeture pour l'orifice de remplissage d'un réservoir à réfrigérant dans des systèmes de refroidissement de véhicules automobiles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE684907C (de) * 1936-09-03 1939-12-07 Gen Motors Corp Verriegelungsvorrichtung fuer eine abdrehbare Verschlusskappe von Gefaessen, die innerem UEberdruck ausgesetzt sind, wie beispielsweise bei Kuehlern von Kraftfahrzeugen
EP0163006A1 (fr) * 1982-07-15 1985-12-04 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Circuit de refroidissement à suspension pour des moteurs à combustion interne à refroidissement liquide
EP0360252A2 (fr) * 1988-09-21 1990-03-28 Blau Kg Couvercle de fermeture pour l'orifice de remplissage d'un réservoir à réfrigérant dans des systèmes de refroidissement de véhicules automobiles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0894955A1 (fr) * 1997-07-30 1999-02-03 BLAU Kunststofftechnik Zweigniederlassung der Tesma Europa GmbH Bouchon de fermeture avec un verrouillage de sécurité pour un réservoir
DE19946845C2 (de) * 1999-09-30 2002-04-18 Blau Kunststofftechnik Zweigni Verschlußdeckel
CN113280409A (zh) * 2021-06-03 2021-08-20 珠海格力电器股份有限公司 一种空调底盘组件、空调室外机和空调器

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