Synchronizer ring for a synchronization unit of a manual transmission and synchronization unit with such a synchronizer ring

Abstract

The invention relates to a synchronizer ring (20) for a synchronization unit (10) of a gearbox (12), with a locking ring (34) having an annular axis (A) and a locking toothing (32) and a coaxial with the lock ring (34) disposed separate cone ring (36) having a first conical surface (38) having a first cone angle ([alpha]) and a radially opposite second conical surface (40) with a second cone angle ([beta]), wherein the first cone surface (38) in the installed state of the synchronizer ring (20) to a gangradseitigen friction cone (24) of the synchronization unit (10) and the second conical surface (40) at a conical counter surface (42) of the locking ring (34) abuts, wherein the locking ring (34) and the cone ring (36) mutually associated abutment surfaces (44, 46) which couple the locking ring (34) and the cone ring (36) in the circumferential direction (48) , and wherein the stop surfaces (44, 46) of the locking ring (34) and / or of the cone ring (36) relative to the ring axis (A) are at least partially inclined such that the second conical surface (40) and the conical counter surface (42) at a acting between the locking ring (34) and the cone ring (36) are torque loaded axially away from one another.

Description

technical field [0001] The invention relates to a synchronizing ring for a synchronizing unit of a transmission and to a synchronizing unit having such a synchronizing ring. Background technique [0002] The synchronizing unit is a conical friction clutch which, when actuated, generates a frictional torque and blocks shifting axially due to the locking geometry as long as there is a rotational speed difference between the synchronizing body and the gear wheels of the transmission Engagement sets. In order to achieve rapid rotational speed compensation, it is generally sought that the synchronizing unit provides the highest possible friction torque with a predetermined axial shifting force. [0003] In order to increase the friction torque, multi-cone synchronizers are used today, especially in the low gears of motor vehicles, but they lead to a more complex construction of the synchronization unit, a greater material requirement and a greater high weight. [0004] It is a...

AI Technical Summary

Problems solved by technology

Of course, the cone angle cannot be reduced arbitrarily, since cone angles below a limit of about 5° to 7° can cause an undesired self-locking effect of the synchronization unit

If the cone angle moves into the self-locking range, the frictional connection can no longer be released without external effort, which leads to a reduction in shift comfort and possibly even to a functional impairment of the synchronization unit

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