Patent ID: 6029793
Filing Date: 2000-02-29
Classification: F16F

Abstract:
A damper disk assembly comprising:a hub(4);a first circular plate member (3) disposed radially outside said hub (4);a first elastic member (7) operably disposed between said hub (4) and said first circular plate member (3), said first elastic member (7) being configured for circumferential compression in response to relative rotary displacement between said hub (4) and said first circular plate member (3) in a first stage of said relative rotary displacement;a damper (8) disposed between said hub (4) and said first circular plate member (3), said damper (8) having a second elastic member (10) configured such that said second elastic member undergoes compression in a second stage of said relative rotary displacement but generally does not undergo compression in said first stage of said relative rotary displacement, a torsion angle (.theta..sub.2) corresponding to said second stage being larger than a torsion angle (.theta..sub.1) corresponding to said first stage;a second circular plate member (12,13) axially opposed to said first circular plate member (3);a third elastic member (5) circumferentially and elastically coupling said first and second circular plate members (12,13) together, and having a spring constant larger than that of said first elastic member (7) and larger than that of said second elastic member (10);an intermediate member (9) engaged with said second elastic member (10) and circumferentially spaced from said hub (4) by said first torsion angle (.theta..sub.1); andwherein said first circular plate member (3) supports the circumferentially opposite ends of said second elastic member (10), and said intermediate member (9) supports the circumferentially opposite ends of said second elastic member (10).