초록 ▼

A torsion damping apparatus between the crankshaft of the engine and the input shaft of the change-speed transmission of a motor vehicle has two flywheels one of which is driven by the crankshaft and the other of which drives the input shaft by way of a friction clutch which generates heat. In order

A torsion damping apparatus between the crankshaft of the engine and the input shaft of the change-speed transmission of a motor vehicle has two flywheels one of which is driven by the crankshaft and the other of which drives the input shaft by way of a friction clutch which generates heat. In order to prevent the transfer of heat from the friction clutch to the antifriction bearing between the flywheels, which are rotatable relative to each other against the opposition of a damper, the bearing is at least partially surrounded by a thermal barrier of synthetic plastic, ceramic or metallic material which prolongs the useful life of the bearing and enhances the torsion damping action of the damper. The thermal barrier can constitute or form part of the damper. The bearing can be disposed radially inwardly of the location of engagement between the clutch and the other flywheel and can be cooled by streams of air flowing through an annulus of passages each having a first end disposed radially inwardly of the friction surface of the other flywheel and a larger second end in a second surface of the other flywheel opposite the friction surface. Heat barriers in the other flywheel can alternate with the passages in the circumferential direction of the other flywheel.

대표청구항 ▼

[ We claim: .[.] [9.]9. Apparatus for compensating for variations of torque, especially for fluctuations of torque which is transmitted between a combustion engine and an input means of a transmission, comprising:at least two flywheels which are rotatable relative to each other about a predetermined

[ We claim: .[.] [9.]9. Apparatus for compensating for variations of torque, especially for fluctuations of torque which is transmitted between a combustion engine and an input means of a transmission, comprising:at least two flywheels which are rotatable relative to each other about a predetermined axis, one of which is connectable with the engine and the other of which is connectable with the input means of the transmission by way of an engageable and disengageable friction clutch mounted on said other flywheel, said other flywheel having a shoulder;damper means arranged to oppose rotation of said flywheels relative to each other, said damper means at least comprising energy storing means acting in a circumferential direction of said flywheels and being located at a first radial distance from said axis;roller bearing means interposed between said flywheels;a substantially disc-shaped member; andmeans for preventing rotation of said member relative to said other flywheel, including a form-locking connection provided between said member and said other flywheel at a second radial distance from said axis less than said first radial distance, said bearing means being located between said shoulder and said member in a predetermined axial position relative to said other flywheel and said member having means for stressing said energy storing means in said circumferential direction in response to rotation of said flywheels relative to each other. .Iaddend..Iadd.