Patent ID: 6257257
Filing Date: 2001-07-10
Classification: A45B

Abstract:
An automatic opening and closing structure of a collapsible umbrella, which comprises:a lower tube of a shaft, which has openings on the lower surface;a runner slidably mounted on said shaft, said runner having an opening and a lower end;a control tube, which is inserted within said lower tube, provided with a fixing position, andformed with openings corresponding to said openings on said lower tube;a hook, the bottom of which is fixed on a base in said control tube and the middle of which is fixed at said fixing position within said control tube;a sleeve, which is formed with an opening on the top and a sliding track is provided therein;a base, which is provided with a connection part for the connection of said lower tube of said shaft, said connection part being formed with a slit, said slit being formed with a through hole, and said through hole being corresponding to one opening on said lower tube,a base sleeve surrounding said connection part and being provided with a compartment groove, said compartment groove being formed with a groove at the bottom at said base sleeve;a button, which is connected within the opening of said sleeve and provided with a sliding track, the front end of which is provided with a hook block, which block is formed with a groove in the front being engaged with a spring and corresponding to said opening of said runner so that it would restore its original position when being pressed;a sliding block, which is connected on said sliding track of said button for sliding, said sliding block being extended with a block in the front end being corresponding to said lower end of said runner having a hollow structure in the middle, and being extended with a pillar at the bottom being connected with a lower spring;a spring plate, which is connected to a groove on said connection part, said spring plate being formed with an aperture corresponding to said through hole on said connection part; anda pin, one end of which is inserted via said through hole of said connection part and said aperture at the top of said spring plate into said opening of said control tube;wherein when said base and said sleeve are connected, said lower spring connecting to the bottom of said sliding block is disposed within said groove at the bottom of said sleeve compartment groove, and one end of said pin would touch the bottom of said sliding block to form a control device for an automatic opening and closing umbrella.