A friction damper includes a cylindrical core member and a cylindrical elastic body. The core member is disposed between an outer circumferential surface of an inner shaft and an inner circumferential surface of an outer shaft, and is fixed to one of the inner and outer shafts. The elastic body is in compressive contact with the other of the inner and outer shafts, and has an axial length larger than that of the core member. The elastic body includes a portion extending in an axial direction away from the core member and has a thick-walled section which extends in a radial direction away from the core member. The thick-walled section has a larger wall thickness than a section of the elastic body which overlaps the core member in an axial direction of the core member, and is held in pressing contact with the other of the inner and outer shafts.

A friction damper comprising a cylindrical core member and a cylindrical elastic body bonded to an inner or outer circumferential surface of the core member, the core member being disposed within an annular space between an outer circumferential surface of an inner shaft and an inner circumferential surface of an outer shaft, which outer and inner circumferential surfaces are held in spline-fitting with each other, the core member being fixed to one of the inner and outer shafts, while the elastic body being disposed in pressing contact with the other of the inner and outer shafts, with compressive deformation of the elastic body, wherein the elastic body has an axial length larger than that of the core member, and includes an extending portion extending in its axial direction away from the core member, and wherein the extending portion of the elastic body has a thick-walled section which extends in a radial direction of the elastic body away from the core member and has a larger wall thickness than a section of the elastic body which overlaps the core member in an axial direction of the core member, the thick-walled section being held in pressing contact with the above-indicated other of the inner and outer shafts.

A device for joining an engine damper and a transmission clutch, may include connecting plates disposed at predetermined positions on the engine damper to be able to transmit power and covering protrusions formed on an input portion of the transmission clutch to be able to transmit power to the protrusions.