F - Mech Eng,Light,Heat,Weapons – 16 – F
Patent
F - Mech Eng,Light,Heat,Weapons
16
F
F16F 13/10 (2006.01) F16F 9/36 (2006.01)
Patent
CA 2432340
The hydraulic volume (4a, 4b) of a hydraulic spring is shut off on one side by a spring element (6) that has been vulcanised into an external ring (8) and is delimited on the other side by a compensation membrane (10). The aim of the invention is to improve the impermeability between the compensation membrane (10) and the external ring (8). To achieve this, the compensation membrane (10) is clamped in a fixed manner between the external ring (8) and the cover (12). The opposing sealing surfaces (14, 16) of the external ring (8) and the cover (12) are preferably configured to be planar. The external edge (18) of the compensation membrane (10) can have a thickening (22), which fills a ring- shaped groove (24) of the same radius in the external ring (8). The hydraulic spring can be used in particular as a primary suspension for use in rail vehicles.
L'invention concerne un ressort hydraulique dont le volume hydraulique (4a, 4b) est limité, d'une part par un élément élastique (6), vulcanisé dans un anneau extérieur (8), et d'autre part par une membrane de compensation (10). L'invention vise à améliorer l'étanchéité entre la membrane de compensation (10) et l'anneau extérieur (8). A cet effet, la membrane de compensation (10) est tendue de manière fixe entre l'anneau extérieur (8) et le couvercle (12). Les surfaces d'étanchéité (14, 16) de l'anneau extérieur (8) et du couvercle (12) se faisant face présentent de préférence une forme plane. Le bord extérieur (18) de la membrane de compensation (10) peut comporter un gonflement (22) qui remplit une rainure (24) annulaire de même rayon façonnée dans l'anneau extérieur (8). Ledit ressort hydraulique sert notamment pour la suspension primaire des véhicules ferroviaires.
Borden Ladner Gervais Llp
Contitech Luftfedersysteme Gmbh
Gedenk Volker
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