Fluid-filled elastic bushing having displacement restrictor with elastic buffer and stiff abutting part

A fluid-filled elastic bushing, comprising:

• a center shaft member;
• an outer cylindrical member disposed radially outwardly of said center shaft member with a suitable radial spacing therebetween;
• an elastic body interposed between and elastically connecting said center shaft member and said outer cylindrical member, said
• elastic body and said outer cylindrical member at least partially defining at least one fluid chamber filled with a non-compressible fluid;
• and
• displacement restricting means, provided in at least one of said at least one fluid chamber, for restricting an amount of relative displacement of said center shaft member and said outer cylindrical member in a radial direction thereof, said displacement restricting means comprising a stop portion which protrudes from one of said center shaft member and said outer cylindrical member toward the other member, said stop portion including an abutting part having an end face which is opposed to said other member, at least one side supporting part and at least one shoulder surface provided between said abutting part and said at least one side supporting part, said at least one side supporting part being opposed to said other member with a distance therebetween as viewed in a load-receiving direction, which distance is larger than a distance between said end face of said abutting part and said other member as viewed in said load-receiving direction, and said displacement restricting means further comprising at least one buffer layer disposed in close contact with said at least one shoulder surface and which is made of an elastic material whose stiffness is lower than that of a material of said abutting part, said at least one buffer layer and said abutting part being opposed to said other member in said load-receiving direction, whereby, upon application of a load causing relative displacement of said center shaft member and said outer cylindrical member in a radial direction thereof, said elastic body deforms, said buffer layer contacts said other member thereby compressing said buffer layer and then said end face of said abutting part contacts said other member in that order.