US 6,283,866 B1Granted

Dampening disk assembly

AssigneeExedy Corporation

InventorsHideki Hashimoto, Takashi Harada, Keisuke Fujioka

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Abstract

A dampening disk assembly 1 is provided in a clutch assembly 1 to make it possible to easily change the level of hysteresis torque when small torsion vibrations are generated. Thus, the level of hysteresis torque can easily be changed to accommodate a wide variety of vehicles. In the dampening disk assembly 1, a friction washer 48 is disposed between an input plate 32 and a hub flange 18. The friction washer 48 is engaged with the input plate 32, so that torque may be transferred from the input plate 32 to the hub flange 18. A cone spring 49 is disposed between the friction washer 48 and the input plate 32 in an axial direction to give resiliency to both members in the axial direction. A fixing plate 20 contacts the friction washer 48 in the axial direction. A spacer 80 is disposed between the fixing plate 20 and the hub flange 18 in the axial direction so as to transmit torque. A first gap is formed either between the spacer 80 and the fixing plate 20 in a rotational direction or between the spacer 80 and the hub flange 18 in the rotational direction.

Claims18

Dependent claims

A dampening disk assembly, comprising:

first and second input disk plate members fixedly coupled to each other and spaced apart from each other in an axial direction to form a space therebetween;
a hub disposed on inner circumferential sides of said first and second input disk plate members;
an intermediate disk plate member disposed on an outer circumferential side of said hub and located in said space between said first and second input disk plate members;
a first friction member disposed between said second input disk plate member and said intermediate disk plate member to generate a first friction, said first friction member movably coupled to said second input disk plate member in the axial direction;
a first urging member axially biasing said first friction member and said second input disk plate member to provide resiliency in the axial direction;
an intermediate mechanism axially disposed between said first friction member and said intermediate disk plate member in the axial direction, said intermediate mechanism including a first intermediate member and a second intermediate member, said first intermediate member being disposed to contact said first friction member in the axial direction, and said second intermediate member being disposed between said first intermediate member and said intermediate disk plate member in the axial direction to transmit torque between said first intermediate member and said intermediate disk plate member;
a first elastic member elastically coupling said intermediate mechanism with said hub in a rotational direction and arranged to bring about low rigidity within a lower torsion angular range of torsion characteristics;
and
a second elastic member elastically coupling said first and second input disk plate members with said intermediate disk plate member in the rotational direction and arranged to bring about high rigidity within a higher torsion angular range of torsion characteristics,
a first predetermined gap being operatively disposed in the rotational direction between said second intermediate member and at least one of said first intermediate member and said intermediate disk plate member, said first predetermined gap arranged to prevent said first friction member and said intermediate mechanism from sliding against each other in response to small torsion vibrations within said higher torsion angular range.

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