Patent ID: 6186897
Filing Date: 2001-02-13
Classification: F16F

Abstract:
A torsional damper device of the kind including, between an input member (11) and an output member (12) rotatable relative to each other, three dampers (A, B, C) which, in kinematic terms, come successively into action upon relative angular movement between said input member (11) and said output member (12), namely, in the opposite order to that in which they come into action, a main damper (A), an intermediate damper (B) and a pre-damper (C), each of said dampers (A, B, C) including two guide washers (20A-21A, 20B-21B, 20C-21C) on respective opposite axial sides of a web (22A, 22B, 22C) and rotatable relative thereto, circumferentially acting spring members (23A, 23B, 23C) disposed circumferentially between the guide washers (20A-21A, 20B-21B, 20C-21C) and the web (22A, 22B, 22C) , and friction means (25A, 25B, 25C) operative between the guide washers (20A-21A, 20B-21B, 20C-21C) and the web (22A, 22B, 22C) or parts constrained to rotate therewith, are acted on by axially acting spring means (26A, 26B, 26C) , characterised in that the axially acting spring means (26B) of the intermediate damper (B) are disposed radially between the circumferentially acting spring members (23B) of the intermediate damper (B) and those (23C) of the pre-damper (C).