Automatically unfold-and-fold structure of the folded umbrella

Abstract

An automatically unfold-and-fold structure of the folded umbrella comprising the shaft, the middle-rod of the umbrella, the lower portion, the upper portion, the umbrella bone, the pulling string and the sliding wheel, the umbrella bone is foldable typed, between the inner-branch bone and the middle-major bone there connects an elastic device, there settles a spring inside the central hole of the middle-rod of the umbrella, one end of the spring is supported on the convex edge on one end of the hollow, the convex edge of the hollow rod there settles a sliding wheel, and the convex edge is fixed and connected with the upper portion, another end of the spring is supported on a buckling seat, the buckling seat is sleeved-inside the central hole on the lower end of the middle-rod of the umbrella and is fixed and connected with the shaft, one end of the pulling string is connecting a hook, another end is extending upwardly and perforates outwardly from the hollow rod body along the inner hole of the middle-rod of the umbrella and unwinds through the sliding wheel on the convex edge end of the hollow rod, the sliding wheel on the lower portion and the sliding wheel on the upper portion and is fixed and connected on the lower portion. Thus, the umbrella facet of the umbrella not only could be unfold completely, the supporting force is increasing, but also the volume of the folded umbrella largely being reduced which becomes convenient for bringing.

What is claimed is:  
     
         1 . An automatically unfold-and-fold structure of the folded umbrella wherein it comprises the shaft, the middle-rod of the umbrella, the lower portion, the upper portion, the umbrella bone, the pulling string as well as the sliding wheel, the umbrella bone is folding typed, one end of the inner-major bone is pivot connected with the lower portion, anther end is pivot connected in the middle portion of the inner-branch bone, whereas one end of the inner-branch bone is pivot connected with the lower portion and another end is pivot connected with the middle-major bone, the upper portion is fixed and connected with one end of the middle-rod of the umbrella, another end of the middle-rod of the umbrella is sleeve connected actively with the lower portion to fix and connect to the shaft, the middle-rod of the umbrella comprises a plurality of tube body, each segment of the tube body is interconnected and sleeved and connected with each other which is characteristic in: between the inner-branch bone and the middle-major bone there is an elastic device in connection, there settles the spring inside the central hole of the middle-rod of the umbrella, the spring is sleeved and connected a hollow rod and one end of the spring is supported by the convex edge on one end of the hollow rod, inside the convex edge of the hollow rod there settles a sliding wheel, and the convex edge of the hollow rod there settles a sliding wheel, and the convex edge is fixed and connected with the upper portion, another end of the spring is supported on a buckle seat, the buckle seat is placed inside the central hole on the lower end of the middle-rod of the umbrella and is fixed and connected with the shaft, the buckle seat is hollow and on its middle portion there settles a horizontal manager, the hook in connection with one end of the pulling string is placed inside the hollow of the buckle seat and is buckled with one upper lateral wall of the horizontal manager, whereas on another relative lateral of the hook there is a spring to support, another end of the pulling string extends upwardly and perforates outside from the body of the hollow rod along the inner hole of the middle-rod of the umbrella and unwinds through the sliding wheel inside the vertex end of the hollow rod, the sliding heel on the lower portion and the sliding wheel on the upper portion and is fixed and connected to the lower portion, the lower end of the lower portion is embedded inside the concave manager of the shaft and is buckled and connected with the hook on the press-button, the press-button is connected with the shaft actively, on the relative lateral of the hook there is a touch arm which is pivot connected with the press-button, the touch arm is supported by a torsion spring, one end of the touch arm is convex extending into the horizontal manager of the buckle seat and in touch with the hook on one end of the pulling string after the lower portion exits the concave manager of the shaft.  
     
     
         2 . The automatically unfold-and-fold structure of the folded umbrella as mentioned in  claim 1 , wherein on the lower end of said shaft thee settles a bottom cap, on the center of the bottom cap there settles a convex mesa, on the convex mesa there settles the concave manager in correspondence with the middle-rod of the umbrella in shape and size, the lower end of the middle-rod of the umbrella is embedded inside the concave manager of the bottom cap, a pin nail is connected with the shaft, the bottom cap, the middle-rod of the umbrella, and the buckle seat inside the middle-rod of the umbrella respectively and is extending to another lateral of the shaft.  
     
     
         3 . The automatically unfold-and-fold structure of the folded umbrella as mentioned in  claim 1 , wherein one end of said lower portion embedded in the shaft there settles the guide block, the guide block is in cooperation with the guide manager of the shaft, the buckle hole of the lower portion is sited on the relative lateral of the guide block, the buckled hole is buckled with the hook on the press-button.  
     
     
         4 . The automatically unfold-and-fold structure of the folded umbrella as mentioned in  claim 1 , wherein said limited-position pin is settled inside the hole in correspondence with the shaft, and on one end of it is pressed on the press-button.  
     
     
         5 . The automatically unfold-and-fold structure of the folded umbrella as mentioned in  claim 1 , wherein said hook of connecting the pulling string is bullet shaped and there settles the ring-shaped convex mesa on its lower segment.  
     
     
         6 . The automatically unfold-and-fold structure of the folded umbrella as mentioned in  claim 1 , wherein said elastic device of connecting the inner-branch bone and the middle-major bone is a small string, there penetrates a series-connection bone on the central hole of said spring.