| 摘要 |
The upper, middle, and lower pipes are jointed with an outer pipe. The upper edge of the upper pipe is extruded from the outer pipe and a rotable umbrella wire holder is fixed on it. The lower pipe is extruded from the lower edge of the outer pipe and the umbrella handle is attached on it. A spiral spring is assembled between the lower pipe and the middle pipe. Branch wires are attached to the middle open-close apparatus, and support wires are attached rotably on the outer pipe open-close apparatus. The extrusion of the upper pipe from the upper edge of the outer pipe opens the wires automatically.
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