Damper mechanism
AssigneeExedy Corporation
InventorsHiroshi Uehara, Yasuhiko Fujita
Life of this patent
Estimating the term…
Abstract
A damper mechanism that has a simplified structure and maintains torsional characteristics of a conventional damper mechanism is provided. The damper mechanism is equipped with an input rotating body 2, an output rotating body 3, and two or more coil spring assemblies 9. The two or more coil spring assemblies 9 elastically couple the input rotating body 2 and the output rotating body 3 together in a rotational direction and serve to absorb twisting torque. Each coil spring assembly 9 has at least one coil spring 41 whose center axis is roughly linear. At least one of coil spring assemblies 9 absorbs 35% to 50% of the twisting torque.
Claims20
A damper mechanism, comprising:
- an input rotating body;
- an output rotating body;
- and
- two or more coil spring assemblies being configured to couple elastically said input rotating body and said output rotating body together in a rotational direction, said coil spring assemblies configured to absorb twisting torque,
- each of said coil spring assemblies having at least one coil spring with a roughly linear center axis, and a pair of spring seats configured to contact said coil spring at opposite ends, said spring seats being configured to prevent rotation of said coil spring around a coil spring axis of said coil spring, and
- at least one of said two or more coil spring assemblies being configured to absorb 35% to 50% of said twisting torque.
A damper mechanism comprising:
- an input rotating body;
- an output rotating body;
- and
- two or more coil spring assemblies being configured to couple elastically said input rotating body and said output rotating body together in a rotational direction, said two or more coil spring assemblies being configured to absorb twisting torque,
- each of said coil spring assemblies having at least one coil spring with a roughly linear center axis, and a pair of spring seats configured to contact said coil spring at opposite ends, said spring seats being configured to prevent rotation of said coil spring around a coil spring axis of said coil spring, and
- an angle formed by two radii passing from a center axis of the damper mechanism through ends of said coil spring being in the range of 60 to 140 degrees.
A damper mechanism comprising:
- an input plate rotatable around an axis;
- a hub flange being disposed adjacent said input plate and rotatable around said axis;
- a first elastic member assembly being configured to couple elastically said input plate and said hub flange together in a rotational direction, said first elastic member assembly having a first elastic member coil spring, and a pair of spring seats configured to contact said first elastic member coil spring at opposite ends, said spring seats being configured to prevent rotation of said first elastic member coil spring around a coil spring axis of said first elastic member coil spring;
- a splined hub being disposed inside said hub flange;
- and
- a second elastic member assembly being configured to couple elastically said splined hub and said hub flange together in said rotational direction,
- a ratio of a distance between said axis and a part of said second elastic member assembly being farthest from said axis of the damper to the distance between said axis of the damper and a part of said first elastic member assembly being closest to said axis of the damper being in the range of 1:0.5 to 1:1.5.
Dependencies are inferred from the claim text.