| 摘要 |
An multiple-fold automatic umbrella includes a telescopic central shaft which constitutes a plurality of movable and overlapping tubes, a rib assembly, a grip, a control means, an extending spring and a plurality of retracting springs. Pressing the control means may trigger an umbrella opening means to stretch the extending spring for extending the overlapping tubes to open the umbrella or to close the umbrella through the retracting springs. The central shaft has an inner block and a rope guide disposed at the tope end to replace conventional rollers. The inner connection rib in the rib assembly is made of metallic wire for increasing the space to install retracting springs, diminishing the retracted volume of an umbrella, and reducing production cost.
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