US 5,288,059 AGranted

Elastic joint having high filtering capacity and an axial gap controlled by incorporated stops, and its applications

AssigneeCaoutchouc Manufacture et Plastiques

InventorsMichel Gautheron, Thierry Duchene

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Abstract

An elastic joint with high filtering capacity and axial gap controlled by incorporated stops includes an elastic ring disposed between internal and external coaxial rigid elements, with an additional elastomer layer disposed at each end of the joint between an axial shoulder of the internal armature casing and a turned in edge of the external ring. Thus, a stop function in an axial direction, which stop function is due to the interaction of the shoulder, the turned in edge, and the elastomer disposed therebetween, produces a filtering rigidity from two to five times lower than the radial rigidity in an equilibrium position, which axial rigidity becomes progressively higher than the radial rigidity beyond the filtering zone when a significant axial force is applied to the joint. Such a joint can be used for motor vehicle suspension arms and in antivibration insulation of mobile or stationary equipment.

Claims20

Dependent claims

An elastic coupling for joining together and filtering vibrations between a first component and a second component, said coupling comprising:

a substantially rigid inner member for being attached to one of said first and said second components, said inner member having a first end, a second end, a longitudinal axis extending from said first end to said second end, and an outer surface disposed about said inner member;
a substantially rigid outer member for being attached to the other of said first and second components, said outer member for being disposed about at least a portion of said inner member, said outer member having an inner surface for being disposed a distance from said outer surface of said inner member;
said inner member comprising a first projection and a second projection, said second projection being spaced apart from said first projection, and each of said first projection and said second projection extending radially outwardly from said inner member a portion of the distance between said inner member and said outer member;
elastomeric means for being disposed between said inner member and said outer member to filter vibrations, said elastomeric means having a first portion means and a second portion means;
said first portion means comprising a first elastomeric portion disposed on said inner member at least in an area between said first projection and said second projection, said first elastomeric portion being disposed between said inner and said outer member in contact with the outer surface of the inner member and the inner surface of the outer member;
each of said first projection and said second projection of said inner member having a first side disposed adjacent said first portion means and a second side disposed towards an end of said inner member;
said outer member has a first end and a second end, the second end being disposed opposite to the first end;
said first and second ends of said outer member extending radially inwardly towards said inner member a portion of the distance between said inner member and said outer member to form a first projection and a second projection of said outer member;
said first projection of said outer member being disposed substantially adjacent said second side of said first projection of said inner member, said second projection of said outer member being disposed substantially adjacent said second side of said second projection of said inner member;
and
said second portion means comprising at least one second elastomeric portion disposed between each of:
said first projection of said inner member and said first projection of said outer member, and
said second projection of said inner member and said second projection of said outer member.

10 more elements

An elastic coupling for joining together and filtering vibrations between a first component and a second component, said coupling comprising:

a substantially rigid inner member for being attached to one of said first and said second components, said inner member having a first end, a second end, a longitudinal axis extending from said first end to said second end, and an outer surface disposed about said inner member;
a substantially rigid outer member for being attached to the other of said first and said second components, said outer member for being disposed about at least a portion of said inner member, said outer member having an inner surface for being disposed a distance from said outer surface of said inner member;
said inner member comprising a first projection disposed at said first end of said inner member, and a second projection disposed at said second end of said inner member, each of said first and said second projections of said inner member extending radially outwardly from said inner member a portion of the distance between said inner member and said outer member;
elastomeric means for being disposed between said inner member and said outer member to filter vibrations, said elastomeric means having a first portion means and a second portion means;
said first portion means comprising a first elastomeric portion disposed on said inner member in an area between said first projection and said second projection of said inner member, said first elastomeric portion being disposed between said inner member and said outer member in contact with the outer surface of the inner member and the inner surface of the outer member;
said outer member comprises:
a first projection disposed adjacent said first end of said outer member and substantially adjacent said first projection of said inner member, and
a second projection disposed adjacent said second end of said outer member and substantially adjacent said second projection of said inner member;
said first and second projections of said outer member extending radially inwardly from said outer member a portion of the distance between said inner member and said outer member;
said second portion means comprising at least one second elastomeric portion disposed between said adjacent ones of:
said first projection of said inner member and said first projection of said outer member, and
said second projection of said inner member and said second projection of said outer member;
said coupling having a rest configuration;
and
said at least one second elastomeric portion is compressed and pre-stressed between said adjacent ones of:
said first projection of said inner member and said first projection of said outer member, and
said second projection of said inner member and said second projection of said outer member,
to provide said rest configuration of said coupling.

15 more elements

An elastic coupling for joining together and filtering vibrations between a first component and a second component, said coupling comprising:

a substantially rigid inner member for being attached to one of said first and said second components, said inner member having a first end, a second end, a longitudinal axis extending from said first end to said second end, and an outer surface disposed about said inner member;
a substantially rigid outer member for being attached to the other of said first and said second components, said outer member for being disposed about at least a portion of said inner member, said outer member having an inner surface for being disposed a distance from said outer surface of said inner member;
said inner member comprising a first projection disposed adjacent said first end of said inner member, and a second projection disposed adjacent said second end of said inner member, said first and second projections of said inner member extending radially outwardly from said inner member a portion of the distance between said inner member and said outer member;
elastomeric means for being disposed between said inner member and said outer member to filter vibrations, said elastomeric means having a first portion means and a second portion means;
said first portion means comprising a first elastomeric portion disposed on said inner member between said first and second projections of said inner member, said first elastomeric portion being disposed between said inner and said outer member in contact with the outer surface of the inner member and the inner surface of the outer member;
said outer member comprising a first projection disposed substantially adjacent said first projection of said inner member, and a second projection disposed substantially adjacent said second projection of said inner member, said first and second projections of said outer member extending radially inwardly from said outer member a portion of the distance between said inner member and said outer member;
and
said second portion means comprising at least one second elastomeric portion disposed between each of:
said first projection of said inner member and said first projection of said outer member;
and
said second projection of said inner member and said second projection of said outer member;
said first and second projections of said inner member are spaced a second distance from said outer member and define a first gap extending from said outer member to each of said first and second projections of said inner member;
said first and second projections of said outer member are spaced a third distance from said inner member and define a second gap extending from said inner member to each of said first and second projections of said outer member;
each of said first gap and said second gap being configured to allow radial deflections of one of said inner member and said outer member with respect to the other of said inner member and said outer member;
and
said first and second projections of said inner member each have a portion extending away from said inner member, said extending portions comprise stop means for contacting said outer member to limit radial movement of said inner member within said outer member.

13 more elements

Dependencies are inferred from the claim text.