Patent ID: 7686024

Claim:
An umbrella, comprising: a shank; a fixed ring mounted on the shank; a movable ring movably mounted on the shank; a plurality of ribs each pivotally and detachably connected with the fixed ring; a plurality of spreaders each pivotally and detachably connected with the movable ring; a plurality of mounting brackets secured on the fixed ring and the movable ring respectively; a plurality of connecting pipes each pivotally and detachably connected with a respective one of the mounting brackets; a plurality of fastening mechanisms each mounted between a respective one of the mounting brackets and a respective one of the connecting pipes to detachably mount the respective connecting pipe onto the respective mounting bracket; a plurality of locking mechanisms each mounted in a respective one of the ribs and the spreaders and each detachably locked onto a respective one of the connecting pipes to detachably lock each of the ribs and the spreaders onto the respective connecting pipe; wherein each of the mounting brackets is provided with a fixing hole to receive the respective fastening mechanism; each of the connecting pipes has an end portion provided with a forked pivot ear pivotally and detachably mounted on the respective mounting bracket; the pivot ear of each of the connecting pipes is provided with a pivot hole aligning with the fixing hole of the respective mounting bracket; each of the fastening mechanisms includes: two juxtaposed threaded sleeves extending through the pivot hole of the respective connecting pipe and the fixing hole of the respective mounting bracket; a threaded rod screwed into the two threaded sleeves to connect the two threaded sleeves.