Supporting rod assembly structure

Abstract

A supporting rod assembly structure includes a main tube and a packing device. The main tube has a first end and a second end, and the packing device has a carrier, a pedal and a base and can be connected to the second end of the main tube by the carrier. The pedal is contained and pivotally connected in a containing space under the carrier, and a stop portion is at the middle, and a force applying end for pedaling is disposed on another end from the pivotal end, such that when the pedal swings downward by a force provided by the force applying end, and the base is limited at the bottom of the carrier, and the top of the base forms a pressed portion.

What is claimed is: 
     
         1 . An supporting rod assembly structure, comprising a main tube and a packing device, and said main tube having a first end and a second end; wherein said packing device, includes a carrier, a pedal and a base; and said carrier is coupled to said second end of said main tube and a containing space disposed under said carrier; said pedal is contained and pivotally coupled in said containing space under said carrier, and a middle section has a stop portion, a force applying end provided for stepping and disposed on an end other than a pivotal end, such that said pedal can be swung downward when a force is applied to said force applying end; said base is slid and limited at the bottom of said carrier to axially displace with said carrier, and said base forms a pressed portion therefore for stopping and pressing said stop portion when said pedal is swung downward and drives said pressed portion and said stop portion form a force applying dead spot. 
     
     
         2 . The supporting rod assembly structure of  claim 1 , wherein said main tube forms an axial dovetail groove disposed on an external wall of said main tube, and said carrier forms a containing groove thereon, and said containing groove internal wall forms an axial dovetail member for embedding and positioning each axial dovetail groove of said main tube. 
     
     
         3 . The supporting rod assembly structure of  claim 2 , wherein said carrier has a bottom panel, and four positioning members extended upward from said bottom panel and each dovetail member and separated with a predetermined gap apart, and said each positioning member has a screw hole passed from the external wall of said carrier secured through said dovetail member and the wall of said main tube and secured by bolt. 
     
     
         4 . The supporting rod assembly structure of  claim 1 , wherein said carrier external wall forms a stair portion for sliding and limiting the position of said base. 
     
     
         5 . The improved supporting rod assembly structure of  claim 1 , wherein said carrier has a breach disposed on a wall of said containing space for extending and protruding said breach out from said pedal force applying end. 
     
     
         6 . The supporting rod assembly structure of  claim 1 , wherein said carrier has a pivotal rod assembly screwed with the wall of said containing space and pivotally coupled with a pivotal end of said pedal, and said pivotal rod assembly is pivotally coupled with a torsion spring, such that the resilience of said torsion spring is exerted onto said pedal, so that said force applying end of said pedal tends to be protruded outward. 
     
     
         7 . The supporting rod assembly structure of  claim 1 , wherein said base has a bottom panel, and said bottom panel has four screw rod assemblys passed upward to sequentially through a spring, a bottom panel of said carrier, and secured by a screw nut, so that the resilience of said spring tends to keep said base and said carrier away from each other. 
     
     
         8 . The supporting rod assembly structure of  claim 5 , wherein said bottom panel on said base forms a limit groove, and a side of said limit groove has an opening and a breach corresponding to the wall of said carrier wall for protruding said pedal force applying end out from said opening, and the bottom surface of said limit groove is provided for forming said pressed portion. 
     
     
         9 . The supporting rod assembly structure of  claim 1 , wherein said base with its bottom coupled with a lower pad. 
     
     
         10 . The supporting rod assembly structure of  claim 1 , wherein said main tube with its top coupled to an upper pad. 
     
     
         11 . The supporting rod assembly structure of  claim 1 , wherein said main tube first end has an extension tube contractible and slide in said main tube and a fastener for locking said extension tube onto said main tube. 
     
     
         12 . The supporting rod assembly structure of  claim 11 , wherein said main tube forms an axial dovetail groove on at least one external wall of said main tube, and said fastener is in the shape of a frame to be sheathed into said first end of said main tube and forms an axial dovetail member on at least one internal wall of said main tube and engaged with said dovetail groove of said main tube, and said fastener has a bolt disposed inward on an external wall of said main tube and passed through and pressed tightly on said dovetail member and the bottom surface of said dovetail groove. 
     
     
         13 . The supporting rod assembly structure of  claim 12 , wherein said main tube has a breach disposed on another external wall of said first end and a securing module disposed on another external wall of said fastener and passed through said breach of said main tube and latched with a corresponding external wall of said extension tube, so as to secure said extension tube onto said first end of said main tube. 
     
     
         14 . The supporting rod assembly structure of  claim 13 , wherein said extension tube forms an axial dovetail groove on at least one external wall, and said securing module further includes a pulling rod assembly, a screw nut, a knob, a securing screw and a spring; and said pulling rod assembly has a screw rod assembly portion and a dovetail member disposed at an end of said screw rod assembly portion and said screw rod assembly portion can be passed from an external wall of said fastener into said breach of said main tube, such that an end of said dovetail member can be engaged into said dovetail groove of said extension tube, and said screw nut is screwed onto said screw rod assembly portion on an external side of said fastener, and said knob is coupled to another end of said screw rod assembly portion by said securing screw and limited and moved in the direction along said screw rod assembly portion, and said knob forms a spring containing grove disposed on an internal side of said knob, and said spring containing groove forms a non-circular latch wall, and said spring is passed through said screw rod assembly portion on an external side of said screw nut and contained in said spring containing groove, such that the resilience of said spring drive said knob to a position on an external side, and said knob can be pressed to move inward to force the latching wall to be engaged with said screw nut, and said screw nut is turned to drive said pulling rod assembly and further press said dovetail member at an internal side against said dovetail groove. 
     
     
         15 . The supporting rod assembly structure of  claim 11 , wherein said extension tube with its top coupled to an upper pad. 
     
     
         16 . The supporting rod assembly structure of  claim 2 , wherein said at least one hanging fastener includes a hanging member and at least one screw member screwed onto said hanging member, and said screw member has a screw head portion engaged with a dovetail groove on an external wall of said main tube, such that said hanging member can be secured with an external wall of said main tube by turning said screw member tightly. 
     
     
         17 . The supporting rod assembly structure of  claim 11 , wherein said at least one hanging fastener includes a hanging member and at least one screw member screwed onto said hanging member, and said screw member has a screw head portion engaged with a dovetail groove on an external wall of extension tube, such that said hanging member can be secured with an external wall of said extension tube by turning said screw member tightly. 
     
     
         18 . The supporting rod assembly structure of  claim 11 , wherein said main tube has a stop member disposed in said second end of said main tube for stopping said extension tube from passing out from said second end of said main tube.