Automated umbrella patent application date 1990.11.19 Application (patent right) Kodenbach Management and Investment Co., Ltd. An automatic umbrella with at least two sections of foldable ribs, and at least A two-stage telescopic rod. There is a movable main sliding sleeve on the rod that is hinged to the lower support of the umbrella rib. There is also a driving spring that can make the sliding sleeve rise and is pressed against the top cover. The upper support is hinged on the cover. The lower end of the rib is hinged on the inner rib strip, and the inner rib strip is hinged on the fixed ring between the top cover and the main sliding sleeve. In order to reduce the force required to pull the main sliding sleeve downward and the sliding friction of the spring on the rod when the umbrella frame is folded, the bottom end F' of the driving spring F is supported on a strong bracket W of the rod 1 and used with the top cover 20. The spring is compressed and relaxed. At this time, due to the tension of the spring and the upper support bone 30, the top cover can be freely suspended on the rod end 1b, or guided to move within the rod end