Flap mechanism

Details Flap mechanism Flap mechanism

F - Mech Eng,Light,Heat,Weapons

02

D

F02D 9/10 (2006.01)

Patent

CA 2347820

The invention relates to a flap mechanism which comprises means for compensating tolerances and the shrinkage behavior of the flap (11). These means exist primarily by the provision of a flap edge (14) which is connected by injection molding after the injection molded flap (11) has cooled, and thus reduces the gap between the flap (11) and the flap frame (10), said gap being produced by the shrinkage of the flap. In addition, the mounting of the shaft (12) in the frame (10) can be realized in an at least partially conical manner, whereby the shrinkage behavior of the flap shaft can be used, especially in an axial direction, in order to produce a mounting which is free of play. As a result, it is no longer necessary to use additional sealing elements on the mounting points of the flap. In addition, the flap is prevented from vibrating in the mounting which, in the worst case scenario, could lead to a destruction of the flap.

L'invention concerne un mécanisme à clapet qui comporte des moyens servant à compenser les tolérances et le comportement de retrait du clapet (11). Un tel moyen de compensation est avant tout un bord de clapet (14) qui est surmoulé par injection après refroidissement du clapet (11) moulé par injection en place, et qui ainsi réduit la fente produite entre le clapet (11) et le cadre de clapet (10) par le retrait du clapet. En outre, le logement de l'arbre (12) dans le cadre (10) peut être réalisé, au moins partiellement, de façon conique, le comportement de retrait de l'arbre de clapet, en particulier dans le sens axial, pouvant ainsi être exploité pour former un logement sans jeu. Grâce à cela il n'est plus nécessaire d'avoir des éléments d'étanchéité complémentaires au niveau des points d'appui du clapet. En outre, une oscillation du clapet dans ledit logement, laquelle pourrait conduire, dans le cas le plus grave, à la destruction du clapet, est empêchée.

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