Double folding auto-expansion and folding umbrella

Abstract

A double folding auto-expansion and folding umbrella has an umbrella shaft formed by a hollow first tube sheathing with a hollow second tube, a head fixed on the bottom of the hollow second tube, a control switch being installed on the head, a first nest fixed on the top of the hollow first tube; a second nest sheathing on the umbrella shaft and capable of lifting and moving along thereof, a supporting frame composed by a plurality of umbrella bones connecting to the second nest, and an umbrella cloth paved on the supporting frame. The first nest is connected to the hollow first tube, the supporting frame and the umbrella cloth. A retaining seat of the elastic pin is positioned in the about middle of the hollow second tube. An elastic hook is installed under the elastic pin. The elastic hook is connected to the control switch. Besides, the upper portion of the hollow first tube has a first buckling hole. An elastic buckle for buckling the first buckling hole is installed in the second nest. An elastic protrusion is installed in the below of the hollow second tube. A main elastic unit for closing the umbrella shaft is installed in the hollow first tube and the hollow second tube. One end of the main elastic unit is fixed in the first nest and another end thereof is fixed on the retaining seat.

1 . A double folding auto-expansion and folding umbrella comprising:
 an umbrella shaft formed by a hollow first tube sheathing with a hollow second tube;   a head fixed on the bottom of the hollow second tube;   a control switch being installed on the head;   a first nest fixed on the top of the hollow first tube;   a second nest sheathing on the umbrella shaft and capable of lifting and moving along thereof;   a supporting frame composed by a plurality of umbrella bones connecting to the second nest;   an umbrella cloth paved on the supporting frame;   wherein the first nest is connected to the hollow first tube, the supporting frame and the umbrella cloth; the second nest sheathing into the umbrella shaft is capable of moving and controlling the supporting frame; a retaining seat is fixed on the middle portion of the interior side of the hollow second tube; a elastic pin is positioned on the retaining seat; the elastic hook is installed under the elastic pin; the elastic pin is connected to a control switch on the umbrella head; the upper specific portion of the hollow first tube has a first buckling hole; a elastic buckle for buckling the first buckling hole is installed in the second nest; a elastic protrusion is installed in the interior side of the below specific portion of the hollow second tube; a twist spring for repositioning the elastic protrusion is installed in the hollow second tube; a main elastic unit for closing the umbrella shaft is installed in the hollow first tube and the hollow second tube; one end of the main elastic unit is fixed in the first nest; and another end thereof is fixed in the retaining seat of the hollow second tube.   
   
   
       2 . The double folding auto-expansion and folding umbrella as claimed in  claim 1 , wherein a second buckling hole corresponding to the elastic hook is installed in a specific portion of the hollow first tube; a recess corresponding to the elastic pin is installed in a specific portion of the hollow first tube; and the second buckling hole is positioned under the recess. 
   
   
       3 . The double folding auto-expansion and folding umbrella as claimed in  claim 1 , wherein the retaining seat has a recessed space; the recessed space is capable of receiving a spring; and a free-end of the spring is against to one side of the elastic pin. 
   
   
       4 . The double folding auto-expansion and folding umbrella as claimed in  claim 1 , wherein the second nest has a groove; a spring is installed in the groove; a free-end of the spring pushes against one side of the elastic buckle. 
   
   
       5 . The double folding auto-expansion and folding umbrella as claimed in  claim 1 , wherein a tension spring for closing the supporting frame is installed on an umbrella bone of the supporting frame of the umbrella cloth. 
   
   
       6 . The double folding auto-expansion and folding umbrella as claimed in  claim 1 , wherein the main elastic unit is a spring. 
   
   
       7 . The double folding auto-expansion and folding umbrella as claimed in  claim 1 , wherein the control switch on the head is connected to the elastic hook by the a connecting sheet; the bottom of the connecting sheet is fixed on the control switch; and the connecting sheet corresponding to the control switch moves upward or downward.