Spring structure for trampoline

Abstract

Disclosed is an improved spring structure used in trampoline for the purpose of sports or exercise. The spring includes coiled plastic middle part and hooks on both ends, at least one of which extends inward with a curve. This makes the exposed part of the hook smooth, thus improve the safety during using the spring. In addition, the end extends outward after extending inward, making the whole structure “R” shaped, which forms an assemble guiding part to provide easy connection between the spring and the trampoline and meanwhile avoids disconnection during movement with a smaller opening. This special structure will improve the safety and stability of trampoline, thus relieving consumers' concern about safety when using the trampoline.

1 . A new trampoline spring structure, which is used to connect the trampoline's frame and the fabric, comprising: hooks on both sides of a coiled elastic middle part, wherein an at least one hook extends inward with a curve. 
   
   
       2 . The trampoline spring structure of  claim 1 , wherein the at least one hook has an assembly guiding part, which extends outward after extending inward with a curve, making the at least one hook “R” shaped. 
   
   
       3 . The trampoline spring structure of  claim 1 , wherein both hooks extends inward with a curve. 
   
   
       4 . The trampoline spring structure of  claim 1 , wherein both hooks extends inward with a curve and wherein the at least one hook has an assembly guiding part, which extends outward after extending inward with a curve, making the at least one hook “R” shaped. 
   
   
       5 . The trampoline spring structure of  claim 1 , wherein both hooks extends inward with a curve and wherein both hooks have an assembly guiding part, which extends outward after extending inward with a curve, making both hooks “R” shaped.