The present invention Hirakikasa spring completely hidden in the lower nest, shape is beautiful, and it is possible to avoid a phenomenon in which the hand is sandwiched, yet be able to narrow the nest body, convenient automatic umbrella to carry the collection It will provide a single structure. The invention relates to a nest structure of an automatic umbrella, Chusu 2 and Shitasu 3 connected in sets with a slip bevel in bars, sandwiched between the nests 2 and Shitasu 3, and wherein in with a Hirakikasa spring 5 which is connected to the outside of the bar in the set, the lower nest 3 stretched the extension sleeve 31 on the lower side, said in the nest 2 extends the positive guide tube 21 on the lower side, said Hirakikasa spring 5 said attached to the bottom of the cavity of the extension sleeve 31, the positive guide tube 21 is inserted into the cavity of the extension sleeve 31 of the lower nest 3, the top of the Hirakikasa spring 5 is offset to the bottom of the positive guide tube 21 . .BACKGROUND
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