Patent ID: 8544485

Claim:
A self-closing collapsible umbrella comprising a handle, a first shaft section, a second shaft section, and a third shaft section of a central shaft, a crown, a runner, ribs, and a pull rope, wherein a first positioning seat that receives a first retention block therein is provided between the first and the second shaft sections and a second positioning seat that receives a second retention block therein is provided between the second and the third shaft sections, the first shaft section having a lower end that receives therein a control seat that comprises a rotation block and that is fixed to the handle, the rotation block being rotatable between a first position and a second position and being coupled to the first retention block of the first positioning seat, whereby when the rotation block is at the first position, the first retention block is set in engagement with a retention hole defined in the second shaft section so as to retain the second shaft section in an expanded position with respect to the first shaft section and when the rotation block is at the second position, the first retention block disengages from the retention hole of the second shaft section so as to release the second shaft section from the first shaft section, the third shaft section having an upper end to which the crown carrying a pulley is mounted, the runner being fit outside the central shaft and having an upper end portion having one side to which a pulley is mounted, the ribs being coupled to the crown and the runner and each provided with a collapsing spring, the pull rope having an end fixed to an upper end of the first positioning seat of the first shaft section and extending around the pulley of the crown and the pulley of the runner to have an opposite end attached to an upper end of the crown.