Patent ID: 7540478

Claim:
Hydroelastic joint for assembling pieces of a structure and for damping vibrations transmitted between said pieces, said joint being suitable for assembly of ground contact members to a main structure of a vehicle, said joint comprising: an external reinforcement and an internal reinforcement, each reinforcement having a longitudinal axis, wherein said external reinforcement and said internal reinforcement are disposed one around the other and intended to be fixed respectively to one and to the other of said pieces to be assembled; an intermediate reinforcement; an assembly forming a hydroelastic spring disposed between said external reinforcement and said intermediate reinforcement in order to permit a relative transverse displacement between said external reinforcement and said intermediate reinforcement, said assembly comprising a first elastically deformable element shaped in order to delimit between said external reinforcement and said intermediate reinforcement a sealed volume containing damping fluid; a plurality of longitudinal bosses separating said sealed volume into a plurality of chambers; and a second elastically deformable element being disposed between said intermediate reinforcement and said internal reinforcement, wherein said second elastically deformable element forms an elastic spring and has a longitudinal dimension less than a corresponding longitudinal dimension of said first elastically deformable element, in order to limit a transverse deformation of said first elastically deformable element during a relative tilting of said longitudinal axes of said external reinforcement and said internal reinforcement about at least one transverse tilting axis, said longitudinal dimension of each of said first and second elastically deformable elements being defined as an axial dimension of a portion that substantially fills a radial space between corresponding ones of said reinforcements, wherein said intermediate reinforcement is disposed between said first and second elastically deformable elements, said first and second elastically deformable elements adhere without interruption to said intermediate reinforcement, wherein said second elastically deformable element adheres without interruption to said internal reinforcement, and wherein said intermediate reinforcement and said internal reinforcement each comprises a cylindrical central portion with a constant cross-section.