Self-locking lower holder for umbrella has sprung locking hook fastened at upper end of shaft, fixing sleeve fitted over holder, and locking groove with locking hole n lower section for engaging with locking hook

摘要

The self-locking lower holder for an umbrella has a sprung locking hook (20) fastened at the upper end of the umbrella's main shaft (10), a fixing sleeve (40) fitted over the holder, and a locking groove (32) with a locking hole (33) in its lower section for engaging with the locking hook. A concave section (42) on the inner wall of the fixing sleeve lies opposite the locking hole in the holder. A bevelled convex key (43) is located above the convex section and interacts with a narrow slot (331) above the locking hole in the holder.