| 摘要 |
A self-closing collapsible umbrella is disclosed and an example of a three-fold umbrella is described. The umbrella includes a central shaft including a first section that includes a handle carrying an actuation button. A positioning seat that receives a retention block arranged therein is provided between the first section and a second section of the shaft and between the second section and a third section of the shaft. As such, the umbrella is opened manually to have the second section extending and positioned by the retention block engaging an upper end of the first section, and the third section is positioned by being retained at the upper end of the second section. To close the umbrella, a collapsing ring is depressed to drive a rotation block of a control seat to release the engagement of the retention block. Collapsing springs arranged on umbrella ribs apply a force to retract the sections of the central shaft to thereby complete the collapse of the umbrella.
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