| 摘要 |
PROBLEM TO BE SOLVED: To improve vibration absorption performance by reducing flexure of a spring member caused by centrifugal force so as to reduce increase in friction torque. SOLUTION: The spring member 14 is housed in a spring housing part 17 having a roughly channel-shaped cross section at an outer circumferential edge part of an input side hold plate 13, and an end part of the spring member 14 is supported by a spring support wall 18 at the outer circumferential edge part of the plate 13. A lock claw 20 of a transmission plate 16 as a torque transmission counter member on the output side is applied to the end part of the spring member 14. In this torsional vibration reducing device 5, a centroid point of a spring applied part of at least either of the lock claw 20 and the spring support wall 18 is disposed outward in a rotation radial direction over a center line p parallel to a device rotation axis at an end surface of the spring member 14. A compression load acting on an end part of the spring member 14 has partial force directing toward the inside in the rotation radial direction, and the partial force acts to weaken force caused by centrifugal force, thereby flexure of the spring member 14 by the centrifugal force is reduced. COPYRIGHT: (C)2004,JPO
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