Patent ID: 7238111

Claim:
A damper unit with a torque limiter which is interposed between an output shaft of an engine and a power transmission shaft of a power transmission system, and which absorbs torsion vibration between both the shafts, the damper unit comprising: a fly wheel which is coupled to the output shaft of the engine from a side of the power transmission system; a torsion damper which is coupled to the power transmission shaft of the power transmission system, and which absorbs the torsion vibration between the fly wheel and the power transmission shaft; a torque limiter for restricting torque transmitted between the fly wheel and the transmission shaft, wherein the torque limiter comprises: a friction disc coupled with the torsion damper, a pair of plates which are coupled with each other so that they have a same rotation, and which sandwich the friction disc, an urging device that presses at least one of the pair of plates so that the friction disc is sandwiched by the pair of plates, a load applying device that applies a set load on the urging device, and a coupler that couples the pair of plates with each other so that the pair of plates have the same rotation, wherein the coupler comprises pins; and a mounting device that mounts the torque limiter onto the fly wheel, wherein the mounting device is provided on one of the pair of plates.