Patent ID: 9631682
Date: 2017-04-25
CPC Classifications: F16D,F16H

Claim:
1. A synchronization device for a manual transmission of a vehicle, comprising: a clutch hub having an annular shape, the clutch hub being arranged, in an integrally rotatable manner, on a rotation shaft forming a powertrain between the rotation shaft and a drive wheel of the vehicle; a hub sleeve having an annular shape, the hub sleeve comprising internal splines engaged with external splines formed on an outer circumference of the clutch hub, the hub sleeve being movable from a first position to a second position in an axial direction of the rotation shaft under a state in which the internal splines are engaged with the external splines of the clutch hub; a gear piece formed on a transmission gear arranged on the rotation shaft in a relatively rotatable manner, the gear piece comprising external splines to be brought into an unengaged state, in which the external splines are not engaged with the internal splines of the hub sleeve at the first position thereof, and into an engaged state, in which the external splines are engaged with the internal splines of the hub sleeve at the second position thereof; and a synchronizer ring arranged between the clutch hub and the gear piece, the synchronizer ring being configured to synchronize rotation of the transmission gear and rotation of the clutch hub by coupling the hub sleeve and the gear piece when the hub sleeve is moved from the first position to the second position in the axial direction, the synchronizer ring comprising: the ring body, the axial protruding portion, and the radial protruding portion being formed integrally by metal stamping.