Resistance adjusting device for non-pull cord window blind

A resistance adjusting device for a non-pull cord window blind, the resistance adjusting device comprising:

• a base having a top hole, a pin hole located adjacent to the top hole, and a fixed shaft correspondingly located under the top hole, each of the top hole, the pin hole and the fixed shaft having circular cross-sections;
• a resistance adjusting seat having a rotational shaft and a driving portion having an X shaped driving groove, the rotational shaft having an axial hole, the resistance adjusting seat being rotatably sleeved onto the fixed shaft of the base by the axial hole of the rotational shaft, the driving portion being disposed on a top end of the rotational shaft and accommodated in the top hole of the base, the resistance adjusting seat further having a plurality of positioning holes and a plurality of resistance adjusting rods, the plurality of positioning holes and the plurality of resistance adjusting rods being arranged with spaces therebetween and the plurality of positioning holes and the plurality of resistance adjusting rods being arranged in an arched or curved configuration with a center of the arched or curved configuration coinciding with a enter of the axial hole of the rotational shaft;
• and
• a positioning pin detachably disposed in the pin hole of the base and selectively disposed in one of the positioning holes of the resistance adjusting seat.