Abstract: A linkage rod for a vertical window blind transmission seat comprises a clamping groove used to engage with a notch located at one side of the transmission seat, a blocking head formed at a front end of the linkage rod, an inward concave edge formed at one side of the linkage rod, a flange block formed on a top of the linkage rod, and a stopping block formed on a top of the linkage rod. After the linkage rod is placed on a linkage sheet by utilizing the inward concave edge to pass through the inserted sheet, the flange block is made to force the inserted sheet to elastically deform upwards, so as to be pulled out, thus making the flange block and the stopping block be locked at the front and back ends of the inserted sheet respectively for realizing a fixed connection of the transmission seat with the movable seat.

Abstract: A roller blind box includes four longitudinal walls and two face walls interconnecting the longitudinal walls. The face walls support a roller blind shaft and are connected via detachably carried guide members to the lateral roller blind guides. Each face wall is formed symmetrical in relationship to a vertical plane passing through the axis of the roller blind shaft. At each of the lower corners of each face wall there is an insertion opening for receiving a respective guide member.