Clutch disk vibration damper assembly

A vibration damper mechanism, comprising:

• a first disc member formed with a plurality of circumferentially spaced apart windows;
• a pair of second disc members disposed on opposite sides of said first disc member, said second disc members formed with first spline teeth axially extending from an inner circumferential portion thereof;
• first elastic members, each one of said first elastic members disposed within one of said windows and disposed between said second disc members, said first elastic members elastically deformable in response to relative rotary displacement between said first disc member and said second disc members;
• a hub formed with second spline teeth on its outer circumference, said second spline teeth engaging said first spline teeth;
• and
• wherein said first spline teeth on said second disc members are formed with an inner circumferential gear surface engaging said second gear teeth, and an outer circumferential gear surface.

A vibration damper mechanism, comprising:

• a first disc member formed with a plurality of circumferentially spaced apart windows;
• a pair of second disc members disposed on opposite sides of said first disc member, said second disc members formed with first spline teeth axially extending from an inner circumferential portion thereof;
• first elastic members, each one of said first elastic members disposed within one of said windows and disposed between said second disc members, said first elastic members elastically deformable in response to relative rotary displacement between said first disc member and said second disc members;
• a hub formed with second spline teeth on its outer circumference, said second spline teeth engaging said first spline teeth, wherein a predetermined clearance is formed in circumferential directions between said first spline teeth and said second spline teeth such that there is limited relative rotary displacement therebetween;
• and
• a second elastic member elastically deformable in circumferential directions between said second disc members and said hub, said second elastic member being formed of a single plate-like member having a plurality of arcuate shaped slits formed therein.

A vibration damper mechanism, comprising:

• a first disc member formed with a plurality of circumferentially spaced apart windows;
• a pair of second disc members disposed on opposite sides of said first disc member, said second disc members formed with first spline teeth axially extending from an inner circumferential portion thereof;
• first elastic members, each one of said first elastic members disposed within one of said windows and disposed between said second disc members, said first elastic members elastically deformable in response to relative rotary displacement between said first disc member and said second disc members;
• a hub formed with second spline teeth on its outer circumference, said second spline teeth engaging said first spline teeth, wherein a predetermined clearance is formed in circumferential directions between said first spline teeth and said second spline teeth such that there is limited relative rotary displacement therebetween;
• a second elastic member elastically deformable in circumferential directions between said second disc members and said hub;
• a first frictional resistance generating mechanism which generates frictional resistance between said second disc members and said hub in response to relative rotary displacement between said second disc members and said hub;
• and
• a second frictional resistance generating mechanism for generating frictional resistance between said first disc member and said second disc members in response to relative rotary displacement between said first disc member and said second disc members, the second frictional resistance generating mechanism including a friction plate which meshes with said first spline teeth so as to rotate therewith and said friction plate contacts one of said second disc members, and an urging member which meshes with said first spline teeth for rotation therewith, said urging member urging said friction plate toward said second disc members.

A vibration damper mechanism, comprising:

• a first disc member formed with a plurality of circumferentially spaced apart windows;
• a pair of second disc members disposed on opposite sides of said first disc member, said second disc members formed with first spline teeth axially extending from an inner circumferential portion thereof;
• first elastic members, each one of said first elastic members disposed within one of said windows and disposed between said second disc members, said first elastic members elastically deformable in response to relative rotary displacement between said first disc member and said second disc members;
• a hub formed with second spline teeth on its outer circumference, said second spline teeth engaging said first spline teeth;
• a frictional resistance generating mechanism generating frictional resistance between said first disc member and said hub in response to relative rotary displacement between said first disc member and said hub;
• and
• a second elastic member disposed between a portion of said hub and said second disc members, said second elastic member being deformable in response to relative rotary displacement between said hub and said second disc members, deformation of said second elastic member urging said frictional resistance generating mechanism to generate frictional resistance, wherein a plurality of slits extending in circumferential directions are formed in said second elastic member.