Window blind assembly for vehicle

A window blind assembly for a vehicle, comprising:

• a main frame;
• a pair of connection units arranged in the main frame, each connection unit including a guide rail connecting part integrally formed therewith and protruding therefrom, each of the guide rail connecting parts including a connection unit hinge at an end portion thereof;
• a rotary shaft rotationally arranged in each of the connection units;
• a pair of guide rails each including guide grooves, at least one of the guide rails rotationally arranged in at least one of the connection units of the pair of connection units and each of the guide rails including a guide rail hinge formed at an end portion thereof and hingedly coupled to a respective one of the connection unit hinges;
• a shade curtain supporter movably coupled to the guide grooves of the pair of guide rails;
• a shade curtain including one side end portion connected to the rotary shaft and rolled into the rotary shaft, and the other side end portion connected to the shade curtain supporter and unrolled as the shade curtain supporter becomes apart from the rotary shaft;
• a driving unit providing driving force to move the shade curtain supporter along the pair of guide rails;
• each of the guide rail connecting parts including a connection unit guide groove so that opposite end portions of the shade curtain supporter are retractable as being at least partially accommodated in the connection unit guide groove;
• and
• each of the connection unit hinges including a first connection unit hinge and a second connection unit hinge spaced apart from each other to form a hinge guide slit therebetween, and the opposite end portions of the shade curtain supporter pass through the hinge guide slit when moving between the guide groove and the connection unit guide groove.