SYNCHRONISING AND SHIFTING DEVICE FOR A MULTIPLE-STEP VARIABLE SPEED TRANSMISSION

摘要

The invention relates to a synchronising and shifting device for a multiple-step variable speed transmission, comprising at least one gear shaft and at least one gear wheel. According to the invention, in order to reduce expenditure of the synchronising and shifting device for the synchronisation of an electromagnetic synchronisation device and for shifting, at least one electrically actuatable contact piece (5, 21) which connects the gear shaft (1) to the gear wheel (7) in a positive fit, is provided. Preferably, an electromagnetic arrangement which enables synchronisation and shifting to take place, is provided.