Damper mechanism
AssigneeExedy Corporation
InventorYoshinari Yoshimura
Life of this patent
Estimating the term…
Abstract
A damper mechanism 4 is provided to prevent wear and damage to coil springs 21 and spring housing parts thereof. A clutch disk assembly 1 chiefly has an input rotary member 2, an output rotary member 3, and the damper mechanism 4. The damper mechanism 4 elastically couples the input rotary member 2 and the output rotary member 3 together in a rotational direction and includes the coil springs 21 and pairs of spring seats 51 that support end faces of the coils springs 21. Each spring seat 51 has a pair of engaging parts 57 having a pyramidal shape that extends in a direction opposite the coil spring 21, engages with seat bearing parts 86 and 96 formed in the input rotary member 2 such that it cannot rotate, and engages with the circumferentially facing end part of spring housing hole 71.
Claims21
A damper mechanism for transmitting torque and damping torsional vibrations comprising:
- a first rotary plate member having a spring housing hole;
- a pair of second rotary plate members being disposed to be fixed-on opposite axially facing sides of said first rotary plate member, each of said pair of second rotary plate members being formed with a spring housing part in a position corresponding to said spring housing hole, said pair of second rotary plate members having a pair of seat bearing parts being formed in circumferentially facing ends of said spring housing parts, said pair of seat bearing parts having a pyramidal shape;
- a coil spring being arranged inside said spring housing hole and said spring housing parts, said coil spring being configured to transmit torque between said first rotary plate member and said pair of second rotary plate members;
- and
- a pair of spring seats, each of said pair of spring seats having,
- a seat part being disposed between an end of said coil spring and a circumferentially facing end of said spring housing hole, said seat part being disposed between an end of said coil spring and a circumferentially facing end of said spring housing parts, said seat part having a first side being configured to support an end face of said coil spring and a second side being located opposite said first side of said seat part in a circumferential direction, and
- a pair of engaging parts being aligned in an axial direction, said pair of engaging parts being configured to extend from said second side of said seat part, said pair of engaging parts being configured to sandwich axially said circumferentially facing end of said spring housing hole, said pair of engaging parts being configured to engage with said circumferentially facing end of each of said spring housing parts, said pair of engaging parts being non-rotatable about an axis of said coil spring, said engaging parts having a pyramidal shape having a peak on said second side of said seat part, said pyramidal shape of said engaging parts corresponding to said pyramidal shape of said pair of seat bearing parts.
A clutch disk assembly being configured to transmit torque from an engine to a transmission comprising:
- an input rotary member having a housing part and seat bearing parts having a pyramidal shape;
- an output rotary member having a housing hole;
- and
- a damper mechanism being configured to connect elastically said input rotary member and said output rotary member, said damper mechanism comprising,
- an elastic member, and
- spring seats being arranged at circumferentially opposite ends of said elastic member, each of said spring seats comprising,
- a seat part being disposed between said elastic member and said housing hole, said seat part being disposed between an end of said elastic member and said housing part, said seat part having a first side being configured to support an end face of said elastic member and a second side being located opposite said first side of said seat part in a circumferential direction, and
- a pair of engaging parts being aligned in an axial direction, said pair of engaging parts being configured to extend from said second side of said seat part in said circumferential direction, said pair of engaging parts being configured to sandwich axially a circumferentially facing end of said housing hole, said pair of engaging parts being configured to engage a circumferentially facing end of said housing parts, said pair of engaging parts being non-rotatable about an axis of said elastic member extending in a rotation direction of said clutch disk assembly, said engaging parts having a pyramidal shape having a peak on said second side of said seat part, said pyramidal shape of said engaging parts corresponding to said pyramidal shape of said pair of seat bearing parts.
Dependencies are inferred from the claim text.