Patent ID: 8272391

Claim:
An auto bending structure of sunshade comprising: an upper section of bending and an lower section of bending, both sides of one end of said lower section of bending are cut even into a flat scarf joint part, which is provided with a through hole in the middle; a bottom of said upper section of bending is provided with a groove corresponding to said scarf joint part, through holes are provided on both sides of said groove, the scarf joint part of said lower section of bending is inserted in said groove, said lower section of bending and said upper section of bending are connected in pivot by a rivet, a return spring is provided inside of an upper section of an umbrella stem, one end of an umbrella string is fixed with a lower nest, and the other end of the umbrella string is connected with a rotating handle after passing fast pulley in the upper section of umbrella stem and passing through the return spring, the upper section of bending and the lower section of bending in order; wherein a sliding rod is placed in the upper section of bending and lower section of bending, through holes are provided on the bottom and top of said sliding rod, a guide pin is provided at the through hole on the bottom of said sliding rod, an arc groove for said guide pin to slide on is provided is on the scarf joint part of the lower section of bending, linear groves corresponding to said arc groove for said guide pin to slide on are provided on both sides of said groove of the upper section of bending, inside the upper section of umbrella stem, a fixed plug and an upper sliding plug capable of moving up and down are provided, said fixed plug is provided with a through hole on the upper part and is connected with the upper section of umbrella stem and a ring around said upper section of umbrella stem with a rivet, the lower part of said upper sliding plug and the top of said sliding rod are pivotally connected, through holes are provided on said fixed plug and upper sliding plug for the umbrella string to pass through, the upper return spring is mounted between said fixed plug and said upper sliding plug, the umbrella string at least passes through said fixed plug, the upper return spring and the upper sliding plug in order before being connected with the rotating handle to make the ring cooperate with the lower nest moving up and down and pulled by the umbrella string so as to realize direction adjustment between said upper section of bending and said lower section of bending.