Closure cap provided with anti-twisting

F - Mech Eng,Light,Heat,Weapons – 01 – P

Patent

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Details

F01P 11/02 (2006.01)

Patent

CA 2416254

The invention relates to a closure cap (111) for openings on reservoirs, especially on motor vehicle radiators. Said closure cap comprises a cap outer part (110) provided with a closure element (113), which can be joined to a reservoir filler, and with a grip element (112), which is held in a manner that permits it to twist in relation to the closure element. The closure cap also comprises an anti-twisting element, which is held in a rotationally fixed manner inside the grip element (112), and which is provided with a coupling insert (180). The coupling insert can be axially engaged in and disengaged from the closure element (113) and effects a rotationally fixed joining, which can be disengaged, of the closure element and grip element. The closure cap is additionally provided with a valve assembly (115), which comprises a valve body (117) that can be axially displaced in a to-and-fro manner, and which is provided for unblocking and blocking flow connections between the interior and exterior of the reservoir according to predetermined values of the internal pressure of the reservoir. In order to enable an anti-twisting as a direct function and in temporal sequence of the conditions prevailing in the interior of the reservoir, the invention provides that the axial disengaging and engaging movement of the coupling insert (180) is derived from the pressure- dependent axial movement of the valve body (117) of the valve assembly (115).

L'invention concerne un bouchon de fermeture (111) pour orifices de récipients, s'utilisant notamment sur des radiateurs d'automobiles, qui comporte une partie extérieure (110) présentant un élément de fermeture (113) pouvant être relié à une tubulure du récipient et un élément de préhension (112) maintenu de manière à pouvoir tourner par rapport au précédent. Ledit bouchon de fermeture comprend en outre un système de blocage en rotation muni d'une pièce d'accouplement (180) pouvant être entrée dans le sens axial dans l'élément de fermeture (113) et en être ressortie, qui sert à relier de manière amovible l'élément de fermeture et l'élément de préhension. Ledit bouchon de fermeture comprend par ailleurs un système de soupape (115) présentant un corps de soupape (117) déplaçable en va-et-vient dans le sens axial, qui sert à libérer ou à bloquer les liaisons d'écoulement entre l'intérieur et l'extérieur du récipient en fonction de données prédéterminées de la pression intérieure du récipient. Afin de permettre un blocage en rotation dépendant directement et suivant temporellement les conditions régnant à l'intérieur du récipient, il est prévu que le mouvement axial de sortie et de rentrée de la pièce d'accouplement (180) découle du mouvement axial fonction de la pression du corps de soupape (117) du système de soupape (115).

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