| 摘要 |
The invention relates to an annulus gear for an epicyclic reduction gear set comprising an inner ring (3, 3') comprising internal teeth able to mesh with planet gears of the epicyclic reduction gear set. The annulus gear further comprises a housing (1, 1', 1") comprising means for securing it to a cylinder head, and at least one damping means (51, 52, 53, 71, 72, 73, 74, 51', 52', 53', 71', 72', 73', 7A, 7B, 7C) for absorbing a spike of energy between the ring (3, 3') and the casing (1, 1', 1") when the ring (3, 3') turns relative to the casing (1, 1', 1") in one direction of rotation, in which direction the ring (3, 3') is able to rotate with respect to the casing (1, 1', 1") between a rest position and a compressed position. The damping means (51, 52, 53, 71, 72, 73, 74, 51', 52', 53', 71', 72', 73', 7A, 7B, 7C) is designed to allow angular travel of at least 8 degrees with respect to the axis X between the ring (3, 3') and the casing (1, 1', 1") without damage to the ring (3, 3') or to the casing (1, 1', 1"). |
