Patent ID: 8596437
Filing Date: 2013-12-03
Classification: F16D

Abstract:
1. A synchronizing device of a manual transmission comprising: a clutch hub splined on a rotation shaft; a sleeve engaged to an external circumferential portion of the clutch hub by interposing a blocking key therebetween, the sleeve being movable axially; a clutch gear having a cone portion and disposed at one side of the sleeve without an interference with the rotation shaft; a blocker ring frictionally engagable to the cone portion of the clutch gear; and a plurality of normal splines and a plurality of groove splines extending across an interior circumference of the sleeve; wherein the normal splines extend uninterrupted across the interior circumference of the sleeve; wherein each groove spline has a key supporting portion and a locking groove formed on the key supporting portion engaged to an exterior circumference of the blocking key; and wherein a width of a middle portion of each groove spline is wider than that of the normal splines, and the middle portion of the groove spline has the key supporting portion and the locking groove.