Importance

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Abstract

A blind slat control mechanism include a pair of first rope ladders mounted between an upper and tower beams of a Venetian blind for a plurality of slats to be equidistantly abutted against for location thereby, and the upper ends of the rope ladders are wound through adjustment rollers of mounting seats adapted at both inner sides of the upper beam to control the rotation of the slats in different angles thereby. A pull cord, led through cord-passage holes of each slat, is wound through a pulley seat mounted at one end of the upper beam to control the folding or unfolding operation of the slats thereby. A sliding guide plate is disposed at the corresponding side of both mounting seats thereof for a second rope ladder and a driving cord to be fixedly attached thereto respectively. The second rope ladder, bestriding the bottommost slat thereof in an U-shaped form, has a plurality of positioning steps alternatively astride the slats in odd or even number. A hook ring and a pivoting hole are disposed at the other end of the upper beam for the driving cord to pass and suspend downwards there-from. Thus, via the linkage operation of the sliding guide plates with both the second rope ladders and the driving cord fixedly attached thereto, the driving cord is simply pulled to actuate the movement of the sliding guide plates and synchronically draw upwards the second rope ladders therewith in an easy and fast manner, effectively avoiding the slant of the slats due to uneven pulling force applied thereto to achieve the best using condition thereof.

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First Claim