| 摘要 |
<p>A synchronizer sleeve adapted for use in a gear synchronizer mechanism of a power transmission, the synchronizer sleeve being formed at its inner periphery with inner spline teeth (1) for meshing engagement to be meshed with a clutch gear (P) of a change-speed gear train and inner spline teeth (2) for synchronization positioned among the inner spline teeth (1) for meshing engagement in a circumferential direction to be meshed with a synchronizer ring (N), wherein the inner spline teeth (1,2) for meshing engagement and for synchronization are provided respectively at their one ends with a pair of chamfer surfaces (1a, 1b; 2a, 2b) formed by plastic deformation in a press-process, and wherein the inner spline teeth (2) for synchronization are formed shorter in axial length than the inner spline teeth (1) for meshing engagement. In the synchronizer sleeve, a ridge (1c, 2c) of each pair of the chamfer surfaces and an intersection (2d, 2e) of each of the chamfer surfaces and each tooth flank (2f) of the inner spline teeth (2) are rounded off by plastic deformation in the press-process. <IMAGE></p> |
