Hydraulic antivibration joint with axial stops, vehicle equipped with such a joint and method of manufacturing such a joint.

摘要

Hydraulic antivibration joint (7) intended to be interposed between a first and second trucks (2, 5) to dampen vibrations, at least according to a first axis (X), this joint is adapted to be fitted into a housing ( 27a) belonging to the second rigid element (5), and said joint comprising: an inner rigid reinforcement (9) extending longitudinally according to a second axis (Y) perpendicular to the first axis (X) and which is intended to be secured to the first rigid element (2), an outer rigid frame (26) having a tubular shape centered on the second axis (Y) and surrounding the inner armature (9), this outer frame has a certain inner diameter and a certain outside diameter, an elastomer body (10) interconnecting the inner and outer armatures (9, 26) and delimiting with these at least two hydraulic chambers (A, B) filled with liquid, qu e scow and part of the inner armature (9) are arranged and which are connected together by at least one throttled passage (C), a rigid intermediate reinforcement (11) is sunk in the elastomer body (10) in the vicinity of the outer armature (26) and is recessed in relation to a hydraulic chambers (a, B), this intermediate reinforcement comprising two rigid rings (12, 13) which are centered on the second axis (Y) and which frame axially hydraulic chambers (a, B), the outer armature (26) encloses these two rigid rings, to close the hydraulic chambers (a, B) sealingly, in which the intermediate frame (11) comprises, in addition to the two rigid rings (12, 13) about first and second collars (20, 21) extending radially outwardly and thus form two shoulders oriented axially towards the two rings (12, 13) and including game is maintained without the outer armature (26), in which coll Arines first and second (20, 21) presentanuna condition than the inner diameter of the outer armature (26) and serve this form axial stops for the external reinforcement, in which the outer diameter of the outer armature radial space (26 ) is greater than the radial clearance of at least the first collar (20), in which the first and second collars (20, 21) are coated with a layer of elastomer (22, 23) belonging to the elastomer body (10) , characterized in that the outer diameter of the outer armature (26) is greater than the condition of radial space elastomer layer (22) covering the first collar (20).