Torsional vibration damper or rotationally elastic coupling

摘要

A torsional vibration damper or rotationally elastic coupling comprises: an outer housing (11) including a flange (13); an inner part (12) arranged within and rotatable relative to the outer housing; a plurality of intermediate pieces (16) arranged around the inner part and spaced apart from each other in circumferential direction so as to form a plurality of chambers (15) filled with a damping medium; a plurality of leaf spring assemblies (18) having one or more leaf springs (19), said leaf spring assemblies being arranged in said chambers and having outer end portions (21) engaging with receptacles (22) formed between neighbouring intermediate pieces and inner end portions (23) engaging with the inner part; and a clamping ring (26) extending around the intermediate pieces and the leaf spring assemblies for securing the leaf spring assemblies between the intermediate pieces. The receptacles between neighbouring intermediate pieces and the corresponding radially outer end portions of the leaf spring assemblies taper radially inwardly. The intermediate pieces are formed integrally on said flange of the outer housing. The radially outer end portions of the leaf spring assemblies are urged radially into the receptacles by the clamping ring. This configuration simplifies assembly of the damper or coupling and provides precise positioning of the leaf spring assemblies. Moreover, it is possible to obtain desired damping properties within narrow ranges of tolerance.