Synchronizing apparatus for transmission

摘要

A booster mechanism is interposed between a hub (22) of a Warner type synchronizing apparatus and a synchronizing ring (40) to boost and transmit a pressure force caused by the movement of a coupling sleeve (28) to a speed change gear side. There is also provided a rearward synchronizing mechanism for stopping the rotation of a drive shaft (10) in such a manner that when the rearward synchronizing mechanism receives a pressure force caused by the reverse shift of the sleeve (28), it reverses and transmits the pressure force to the synchronizing ring (40) for a synchronizing action, in addition to the booster mechanism on the forward speed change gear (14).