Patent ID: 6168526
Filing Date: 2001-01-02
Classification: F16F

Abstract:
A damper disc assembly comprising: a first rotary plate formed with a plurality of extending portions, each of said extending portions being formed with a window, each of said extending portions having a projection at a radially outermost portion of said extending portion; a second rotary plate arranged coaxially at a first axial side of said first rotary plate, and having a plurality of first supports corresponding to said plurality of windows, respectively; a third rotary plate arranged coaxially at a second axial side of said first rotary plate, and having a plurality of second supports corresponding to said plurality of windows, respectively; a plurality of plate-like coupling portions coupling outer peripheral portions of said second and third rotary plates together, and each having a radial length shorter than a circumferential length thereof, a radially outer portion of each of said plate-like coupling portions defining a stopper portion; and a plurality of springs arranged within said windows and said first and second supports, elastically coupling said first rotary plate to said second and third rotary plates in the circumferential direction, and being compressed between said windows and said first and second supports when said first rotary plate rotates relative to said second and third rotary plates, wherein each of said plate-like coupling portions being arranged circumferentially between said extending portions, and being able to contact circumferentially with said projections formed on said extending portions in response to relative rotation between said first rotary plate and said second and third rotary plates, said stopper portions and said projections being configured such that said first rotary plate and said second and third rotary plates may undergo relative rotation with respect to one another within an angular displacement range of at least 30.degree..