Hutchinson

Andre Girard

Denis Reh

Alain Bellamy

Daniel DuBos

Gilles Chenais

Giovanni Piu

Patrick Philippeau

A hydraulic antivibration support comprises an annular elastomer body surrounding a central axis and interconnecting a first support member and a support plate both of which are likewise annular. The elastomer body has two concentric annular cavities closed by the support plate, and constituting a working chamber and a compensation chamber which is radially defined on the outside by a thin side wall of the elastomer body, said two chambers being filled with liquid and being interconnected by a constricted passage which is defined in part by a channel-section piece located in one of the two chambers.

Hydraulic antivibration support and a motor vehicle subassembly

Motion transmitting rod with security device

The invention relates to a hydraulic vibration-damping mount including a first rigid reinforcing member (1) and a second rigid reinforcing member (2), an elastomeric body (3) which includes, on the one hand, a thick wall (4) joining the two rigid reinforcing members to one another and partially delimiting a working chamber (A), and, on the other hand, a thin wall (5) which partially delimits a compensation chamber (B) connected to the working chamber by a narrow duct (C), the two chambers and the narrow duct being filled with a liquid, the second reinforcing member being a plate one face of which is secured in leaktight fashion to the elastomeric body in order to delimit, together with the latter, the two chambers and the narrow duct, the thin wall substantially exhibiting the shape of a bell only the edge (5.sub.1) of which is secured to the second reinforcing member.

Hydraulic vibration-damping mounts

A resilient pressurized fluid articulation is disclosed which has variable stiffness, i.e. whose stiffness may be modified at will under the influence of an external agent. The articulation includes a resilient material block (5, 5a; 15, 15a) mounted between rigid bearing surfaces of a structure (7, 7a, 7b, 7c) which contains it. At least two of these surfaces of the block are movable with respect to each other in at least one direction, under the action of external forces acting in this direction. The resilient material block (5, 5a; 15, 15a) defines in the structure at least one chamber (3) adapted to be fed with pressurized fluid through a duct (2) opening to the outside. The block (3) also comprises at least one part (18, 18a) which is deformable under the effect of the pressure, deformation of the part then modifying the stiffness of the block in the direction.

Resilient articulation with variable stiffness

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La Chapelle Du Noyer, France

Andre Girard