Patent ID: 7958901

Claim:
An umbrella, comprising: an upright post; a swing mechanism pivotally mounted on the upright post; a frame mounted on the swing mechanism to pivot in concert with the swing mechanism relative to the upright post; a driving mechanism mounted on the upright post and connected with the swing mechanism to drive the swing mechanism to pivot relative to the upright post; wherein the swing mechanism includes: a pivot seat pivotally mounted on the upright post for mounting the frame; a pull bar having an upper end pivotally connected with the pivot seat to drive the pivot seat to pivot relative to the upright post; a driven rod having an upper end connected with a lower end of the pull bar to drive and move the pull bar that is driven by the driving mechanism to move upward and downward relative to the upright post; the lower end of the driven rod is provided with an outer thread; the driving mechanism includes: a housing secured to the upright post to allow passage of the driven rod; a driven nut rotatably mounted in the housing and screwed onto the outer thread of the driven rod; a driven gear rotatably mounted in the housing and secured on the driven nut to drive the driven nut to rotate relative to the driven rod; a drive gear meshing with the driven gear to drive the driven gear to rotate relative to the driven rod; a propeller shaft secured on the drive gear to rotate the drive gear; a rocker arm secured on the propeller shaft to rotate the propeller shaft.