Damper disk assembly

A damper disk assembly comprising:

• a first rotary member having at least one spring accommodating aperture;
• a second rotary member having at least one spring accommodating portion corresponding to said spring accommodating aperture, said second rotary member being arranged near said first rotary member with said first and second rotary members having a rotation axis;
• a coil spring being arranged within said spring accommodating aperture and said spring accommodating portion for transmitting a torque between said first and second rotary members;
• and
• a pair of spring seats being arranged on circumferentially opposite ends of said coil spring, said spring seats supporting the circumferentially opposite ends of said coil spring and engaging with an inner side of said coil spring, said spring seats being engageable with circumferentially opposite ends of said spring accommodating aperture and said spring accommodating portion,
• said spring seats having contact portions extending within said coil spring a predetermined distance to come into contact with each other when said spring seats move toward each other in accordance with the relative rotation between said first and second rotary members and spring support surfaces supporting said coil spring, each of said spring support surfaces extending in an axial direction substantially parallel to said rotation axis of said first and second rotary members, each of said spring support surfaces having a radial width extending in a direction generally along a radius extending outwardly from said rotation axis of said first and second rotary members, said radial width being substantially equal to or less than an inner diameter of said coil spring, and
• said spring seats being supported by the circumferentially opposite ends of said spring accommodating aperture and said spring accommodating portion such that said spring seats are rotatable about an axis parallel to said rotation axis of said first and second rotary members.

A damper disk assembly comprising:

• a first rotary member having at least one spring accommodating aperture;
• a second rotary member having at least one spring accommodating portion corresponding to said spring accommodating aperture, said second rotary member being arranged near said first rotary member with said first and second rotary members having a rotation axis;
• a first coil spring being arranged within said spring accommodating aperture and said spring accommodating portion, and supported between the circumferentially opposite ends of said spring accommodating portion and said spring accommodating aperture for transmitting a torque between said first and second rotary members;
• a second coil spring being arranged within said spring accommodating aperture and said spring accommodating portion, and located within said first coil spring for transmitting the torque between said first and second rotary members;
• and
• a pair of spring seats being arranged on circumferentially opposite ends of said second coil springs, said spring seats supporting the circumferentially opposite ends of said second coil spring and engaging with inner side of said second coil spring, said spring seats being circumferentially engageable with circumferentially opposite ends of said spring accommodating aperture and said spring accommodating portion, and said spring seats having spring support surfaces supporting said second coil spring, each of said spring support surfaces extending in an axial direction substantially parallel to said rotation axis of said first and second rotary members, each of said spring support surfaces having a radial width extending in a direction generally along a radius extending outwardly from said rotation axis of said first and second rotary members, said radial width being substantially equal to or less than an inner diameter of said coil spring,
• said spring seats being supported by said circumferentially opposite ends of said spring accommodating aperture and said spring accommodating portion such that said spring seats are rotatable about an axis parallel to said rotation axis of said first and second rotary members.

A damper disk assembly comprising:

• a first rotary member having at least one spring accommodating aperture;
• a second rotary member having at least one spring accommodating portion corresponding to said spring accommodating aperture, said second rotary member being arranged near said first rotary member;
• a first coil spring being arranged within said spring accommodating aperture and said spring accommodating portion, said first coil spring being supported between the circumferentially opposite ends of said spring accommodating portion and said spring accommodating aperture for transmitting a torque between said first and second rotary members;
• a second coil spring being arranged within said spring accommodation aperture and said spring accommodating portion, said second coil spring being located within said first coil spring for transmitting the torque between said first and second rotary members;
• and
• a pair of spring seats being arranged on circumferentially opposite ends of said second coil springs, said spring seats supporting the circumferentially opposite ends of said second coil spring and enraging with inner side of said second coil spring, and said spring seats being circumferentially engageable with circumferentially opposite ends of said spring accommodating aperture and said spring accommodating portion, said spring seats being supported by said circumferentially opposite ends of said spring accommodating aperture and said spring accommodating portion such that said spring seats are rotatable about an axis parallel to a rotation axis of said first and second rotary members,
• said circumferentially opposite ends of said spring accommodating aperture and said spring accommodating portion each having a first support surface and a second support surface, said first support surfaces supporting the circumferentially opposite ends of said first coil spring, said second support surfaces supporting said spring seats, and
• first gaps being formed circumferentially between said spring seats and both of the circumferentially opposite ends of said first coil spring.

A damper disk assembly comprising:

• a first rotary member having at least one spring accommodating aperture;
• a second rotary member having at least one spring accommodating portion corresponding to said spring accommodating aperture, said second rotary member being arranged near said first rotary member;
• a first coil spring being arranged within said spring accommodating aperture and said spring accommodating portion, said first coil spring being supported between the circumferentially opposite ends of said spring accommodating portion and said spring accommodating aperture for transmitting a torque between said first and second rotary members;
• a second coil spring being arranged within said spring accommodating aperture and said spring accommodating portion, said second coil spring being located within said first coil spring for transmitting the torque between said first and second rotary members;
• and
• a pair of spring seats being arranged on circumferentially opposite ends of said second coil springs, said spring seats supporting the circumferentially opposite ends of said second coil spring and engaging with inner side of said second coil spring and said spring seats being circumferentially engageable with circumferentially opposite ends of said spring accommodating aperture and said spring accommodating portion,
• said spring seats being supported by said circumferentially opposite ends of said spring accommodating aperture and said spring accommodating portion such that said spring seats are rotatable about an axis parallel to a rotation axis of said first and second rotary members,
• said circumferentially opposite ends of said spring accommodation aperture and said spring accommodating portion each having a first support surface and a second support surface, said first support surfaces supporting the circumferentially opposite ends of said first coil spring, said second support surfaces supporting said spring seats and being arc-shaped concave portions that open in the circumferential direction, each of said spring seats having an engagement portion engageable with one of said concave portions, and
• first gaps being formed circumferentially between said spring seat and both of the circumferentially opposite ends of said first coil spring.

A damper disk assembly comprising:

• a first rotary member having at least one spring accommodating aperture;
• a second rotary member having at least one spring accommodating portion corresponding to said spring accommodating aperture said second rotary member being arranged near said first rotary member;
• a first coil spring being arranged within said spring accommodating aperture and said spring accommodating portion, said first coil spring being supported between the circumferentially opposite ends of said spring accommodating portion and said spring accommodation aperture for transmitting a torque between said first and second rotary members;
• a second coil spring being arranged within said spring accommodation aperture and said spring accommodating portion, said second coil spring being located within said first coil spring for transmitting the torque between said first and second rotary members;
• and
• a pair of spring seats being arranged on circumferentially opposite ends of said second coil springs, said spring seats supporting the circumferentially opposite ends of said second coil spring and engaging with inner side of said second coil spring, and said spring seats being circumferentially engageable with circumferentially opposite ends of said spring accommodating aperture and said spring accommodating portion,
• said spring seats being supported by said circumferentially opposite ends of said spring accommodating aperture and said spring accommodating portion such that said spring seats are rotatable about an axis parallel to a rotation axis of said first and second rotary members,
• said circumferentially opposite ends of said spring accommodating aperture and said spring accommodating portion each having a first support surface and a second support surface, said first support surfaces supporting the circumferentially opposite ends of said first coil spring, said second support surfaces supporting said spring seats, and
• gaps being formed circumferentially between said first support surfaces and both of the circumferentially opposite ends of said second coil spring.

A damper disk assembly comprising:

• a first rotary member having at least one spring accommodating aperture;
• a second rotary member having at least one spring accommodating portion corresponding to said spring accommodating aperture, said second rotary member being arranged near said first rotary member;
• a first coil spring being arranged within said spring accommodating aperture and said spring accommodating portion, said first coil spring being supported between the circumferentially opposite ends of said spring accommodating portion and said spring accommodating aperture for transmitting a torque between said first and second rotary members;
• a second coil spring being arranged within said spring accommodating aperture and said spring accommodating portion, said second coil spring being located within said first coil spring for transmitting the torque between said first and second rotary members;
• and
• a pair of spring seats being arranged on circumferentially opposite ends of said second coil springs, said spring seats supporting the circumferentially opposite ends of said second coil spring and engaging with inner side of said second coil spring, and said spring seats being circumferentially encageable with circumferentially opposite ends of said spring accommodating aperture and said spring accommodating portion,
• said spring seats being supported by said circumferentially opposite ends of said spring accommodating aperture and said spring accommodating portion such that said spring seats are rotatable about an axis parallel to a rotation axis of said first and second rotary members,
• said circumferentially opposite ends of said spring accommodating aperture and said spring accommodating portion each having a first support surface and a second support surface, said first support surfaces supporting the circumferentially opposite ends of said first coil spring, said second support surfaces supporting said spring seats,
• said second support surfaces being arc-shaped concave portions that open in the circumferential direction, each of said spring seats having an engagement portion engageable with one of said concave portions, and
• gaps being formed circumferentially between said first support surfaces and both of the circumferentially opposite ends of said second coil spring.

A damper disk assembly comprising:

• a first rotary member having at least one spring accommodating aperture;
• a second rotary member having at least one spring accommodating portion corresponding to said spring accommodating aperture, said second rotary member being arranged near said first rotary member, said second rotary member being formed by a pair of plate members, each of said plate members having said spring accommodating portion corresponding to said spring, accommodating aperture, said pair of plate members being arranged on axially opposite sides of said first rotary member and fixedly coupled to each other;
• a first coil spring being arranged within said spring, accommodating aperture and said spring accommodating portion, said first coil spring being supported between the circumferentially opposite ends of said spring accommodating portion and said spring accommodating aperture for transmitting a torque between said first and second rotary members;
• a second coil spring being arranged within said spring accommodating aperture and said spring accommodating portion, said second coil spring being located within said first coil spring for transmitting the torque between said first and second rotary members;
• and
• a pair of spring seats being arranged on circumferentially opposite ends of said second coil springs, said spring seats supporting the circumferentially opposite ends of said second coil spring and enlarging with inner side of said second coil spring, and said spring seats being circumferentially engageable with circumferentially opposite ends of said spring accommodating aperture and said spring accommodating portion,
• said spring seats being, supported by said circumferentially opposite ends of said spring accommodation aperture and said spring accommodatinm portion such that said spring seats are rotatable about an axis parallel to a rotation axis of said first and second rotary members,
• said circumferentially opposite ends of said spring accommodating aperture and said spring accommodation portion each having a first support surface and a second support surface, said first support surfaces supporting the circumferentially opposite ends of said first coil spring, said second support surfaces supporting said spring seats,
• each of said spring seats being provided at its axially opposite ends with opposition surfaces opposed to the circumferential ends of said first coil spring,
• first gaps being formed circumferentially between the circumferentially opposite ends of said first coil spring and said opposition surfaces, and
• second gaps being formed circumferentially between said first support surfaces and the circumferentially opposite ends of the second coil spring.