Trampoline frame with integrated side frame members and trampoline employing such frame

Abstract

A trampoline frame structure includes a side frame and a number of support legs. The side frame includes a number of side frame tube sections, where each side frame tube section and two support legs are formed integrally into an upside-down U shaped side frame member. Each pair of adjacent side frame members are connected together by fasteners that connect adjacent support legs of the two side frame members, and the multiple side frame member collectively form a closed shape in the top view. The entire trampoline frame can be formed without welding, which simplifies the manufacturing process and accomplishes a trampoline frame having high strength and low manufacturing cost.

What is claimed is: 
     
         1 . A trampoline frame structure, comprising:
 a side frame;   a plurality of support legs;   wherein the side frame includes a plurality of side frame tube sections, wherein each side frame tube section and two corresponding support legs are formed integrally into an upside-down U shaped side frame member, and wherein the plurality of upside-down U shaped side frame members are spatially arranged relative to each other in a closed shape in a top view; and   a plurality of fasteners, configured to connect adjacent support legs of each pair of adjacent upside-down U shaped side frame members.   
     
     
         2 . The trampoline frame structure of  claim 1 , further comprising a plurality of connecting tubes, each connecting tube being disposed to connect two free ends of the two support legs of one of the upside-down U shaped side frame members. 
     
     
         3 . The trampoline frame structure of  claim 2 , wherein each connecting tube is formed integrally with the corresponding upside-down U shaped side frame member. 
     
     
         4 . The trampoline frame structure of  claim 2 , wherein the side frame tube sections, the support legs, and the connecting tubes are square tubes. 
     
     
         5 . The trampoline frame structure of  claim 2 , wherein the side frame tube sections, the support legs, and the connecting tubes are round tubes. 
     
     
         6 . The trampoline frame structure of  claim 2 , wherein the side frame tube sections, the support legs, and the connecting tubes are D-shaped tubes. 
     
     
         7 . The trampoline frame structure of  claim 1 , wherein the plurality of fasteners including a plurality of bolts and a corresponding plurality of nuts. 
     
     
         8 . The trampoline frame structure of  claim 1 , wherein each side frame tube section has an arc shape in the top view, and wherein the side frame formed by the plurality of side frame tube sections has a circular shape. 
     
     
         9 . The trampoline frame structure of  claim 1 , wherein each side frame tube section has a curved shape in the top view, and wherein the side frame formed by the plurality of side frame tube sections has an oval shape. 
     
     
         10 . The trampoline frame structure of  claim 1 , wherein each side frame tube section has a straight shape in the top view, and wherein the side frame formed by the plurality of side frame tube sections has a polygonal shape. 
     
     
         11 . The trampoline frame structure of  claim 1 , wherein each support leg is bent outwardly at its lower end. 
     
     
         12 . The trampoline frame structure of  claim 1 , wherein the two support leg of each side frame member are bent in a circumferential direction toward each other at their lower ends. 
     
     
         13 . A trampoline, comprising:
 the trampoline frame structure of  claim 1 ;   a plurality of safety net support posts affixed to the side frame structure; and   a safety net fastened to the plurality of safety net support posts.   
     
     
         14 . The trampoline of  claim 13 , wherein each safety net support post is affixed to two adjacent support legs that are joined together.