Patent ID: 6427818
Filing Date: 2002-08-06
Classification: F16D

Abstract:
Synchronizing device in a vehicle gearbox, comprising a guide sleeve, intended to be non-rotatably joined to a shaft in the gearbox, an engaging sleeve, which is non-rotatably but axially displaceably mounted on the guide sleeve, an engaging ring provided with external engaging teeth, said ring being intended to be solidly joined to a gear rotatably mounted on the shaft and be lockable relative to the guide sleeve by axial displacement of the engaging sleeve from a neutral position to an engagement position, in which internal engaging teeth on the engaging sleeve engage the external teeth on the engaging ring, and synchronizing means cooperating with the engaging sleeve and the engaging ring in the form of at least two concentric synchronizing rings each having a conical frictional surface, said rings being movable into engagement with opposing conical frictional surfaces on a synchronizing cone lying between the synchronizing rings and being fixed rotationally relative to the engaging ring, the one synchronizing ring being fixed rotationally relative to the other synchronizing ring by means of an annular torque-transmitting element,wherein the torque-transmitting element (20) comprises: first driver fingers (22) extending radially from an outer periphery thereof, said first driver fingers (22) being received in notches (26) in the guide sleeve (2); first driver elements (22c) engaging in notches (25) in the outer synchronizing ring (12); and second driver elements (23) engaging in notches (32) in the inner synchronizing ring (11).