Trampoline having cushion mechanism

Abstract

The trampoline contains a flexible jumping bed enclosed by a closed frame supported by a number of legs on the ground. A cushion element such as a spring, a rubber block, or a hydraulic or air buffering device is provided at each connection between the frame and the legs. The cushion element absorbs part of the downward force exerted on the frame and the legs so that an extended operation life of the trampoline is achieved.

1 . A trampoline, comprising
 a closed frame;   a plurality of legs beneath and joining to said closed frame by a plurality of connections so as to support said closed frame above the ground for an appropriate height;   a flexible jumping bed enclosed by said closed frame;   a plurality of springs between the rim of said jumping bed and said closed frame to stretch said jumping bed; and   a plurality of cushion elements provided at said connections, respectively.   
   
   
       2 . The trampoline according to  claim 1 , wherein said frame is formed by cascading end-to-end a plurality of first segments and a plurality of second segments alternately; each first segment comprises two downward connectors; and each leg comprises two vertical beams joining to two downward connectors from two first segments, respectively, with a second segment sandwiched between said first segments, to form two of said connections. 
   
   
       3 . The trampoline according to  claim 2 , wherein at least one downward connector is a sleeve; a vertical beam of a leg is plugged into said sleeve; and a cushion element is housed inside said sleeve to interface with said vertical beam. 
   
   
       4 . The trampoline according to  claim 2 , wherein the top end of at least one vertical beam is a sleeve, a downward connector of a first segment is plugged into said sleeve; a blocker is provided inside said sleeve; and a cushion element is housed inside said sleeve and supported by said blocker to interface with said downward connector. 
   
   
       5 . The trampoline according to  claim 1 , wherein said cushion element is one of a spring, a rubber block, a hydraulic buffering device, and an air buffering device.