RECIPROCATING TYPE PULL ROD DRIVING APPARATUS AND CURTAIN SYSTEM HAVING SAME

The present invention relates to a reciprocating type pull rod driving apparatus, primarily comprising: a housing, a shaft rod, a drive wheel, a chain, and an operating assembly; one end of the shaft rod extends to the housing, the drive wheel is disposed on the shaft rod, the chain engages with multiple engagement teeth of the drive wheel, the operating assembly is connected to the chain, and the chain can be operated to rotate the drive wheel. A distance between a radial outer end edge of the drive wheel and an inner wall of the housing is greater than or equal to a thickness of the chain, and a quantity of drive wheel teeth the chain engages with is less than a half of a total quantity of teeth; thus, the chain can be easily disengaged from the drive wheel, and can also be easily reset to again pull the driving wheel, so that the chain can move in a reciprocating manner and drive the drive wheel to rotate, to change a single occlusion action mode of a conventional long pull rope, which can thus greatly red