The utility model provides a syntropy drive mechanism, including a main shaft, the output shaft, connecting piece and locking lever, be equipped with respectively on the connecting piece with first arch, protruding and the first recess of the protruding matched with of third of second, second recess and third recess, be equipped with the fourth recess in the second arch, be equipped with with thefourth protrudingly on the output shaft respectively, the 5th protruding and the 6th protruding the 6th corresponding recess, the 7th recess and the 8th recess, the level that is equipped with on theconnecting piece is perforated, the 5th recess and the vertical intercommunication of second recess communicate with level perforation level, go into the third recess when first protruding card, the 6th protruding card is gone into behind the 8th recess, the dead lever passes the last chucking of the 5th recess and second recess in proper order in the fourth recess, the through -hole is perforatedwith the level and is communicate simultaneously, the locking lever level that penetrates is perforated and the through -hole is fixed on the connecting piece. The utility model discloses a connecting piece makes main shaft and output shaft transmission more swift the diversified joint of main shaft and output shaft.