Patent ID: 6019342
Filing Date: 2000-02-01
Classification: F16F

Abstract:
Antivibration device for interposing between two rigid elements to damp vibration between said two elements, the device comprising:first and second rigid strength members suitable for securing respectively to the two rigid elements to be united;an elastomer body interconnecting the two rigid strength members; anda first elastomer abutment secured to one of the two rigid strength members extending parallel to a determined axis up to a first abutment end which faces a first counter-abutment secured to the other of the two rigid strength members, said first abutment end being adapted to come into contract with said first counter abutment to limit the displacement of the first strength member relative to the second strength member parallel to said determined axis in a determined direction of movement of the first rigid strength member relative to the second strength member, the first abutment being substantially undeformable perpendicularly to said axis, such that said first abutment substantially prevents any relative movement between the first and second strength members perpendicularly to said determined axis when said first abutment is in contact with the first counter-abutment, the first abutment normally being at a distance from the first counter-abutment,said antivibration device further comprising a second elastomer abutment different from the first abutment, secured to one of the two rigid strength members extending parallel to said determined axis up to a second abutment end which faces a second counter-abutment secured to the other of the two rigid strength members, said second abutment end being adapted to come into contact with said second counter-abutment to limit movement of the first strength member relative to the second strength member parallel to said determined axis and in said determined direction of movement of the first rigid strength member relative to the second strength member, the second abutment normally being spaced apart from the second counter-abutment, and being adapted to come into contact with said second counter-abutment before the first abutment comes into contact with the first counter-abutment when the first strength member moves relative to the second strength member and in said determined direction parallel to said determined axis, the second abutment being less stiff than the first abutment parallel to said determined axis, and the second abutment also presenting a certain amount of flexibility perpendicular to said determined axis to allow relative movement between the two rigid strength members perpendicular to said determined axis when said second abutment is in contact with the second counter-abutment, so long as the first abutment is not in contact with the first counter-abutment.