Sporting Device

Abstract

A sporting device includes a fixing structure, a wheel and an elastic assembly. The wheel is disposed on the fixing structure. The elastic assembly is disposed on the fixing structure and selectively linked with the wheel. When the wheel is unlinked with the elastic assembly, the elastic assembly would not be driven by the wheel, when the wheel is linked with the elastic assembly, the elastic assembly storages a force by driving the wheel.

What is claimed is: 
     
         1 . A sporting device, comprising:
 a fixing structure;   a wheel disposed on the fixing structure; and   an elastic assembly disposed on the fixing structure and selectively linked with the wheel;   wherein, when the wheel is unlinked with the elastic assembly, the elastic assembly would not be driven by the wheel, when the wheel is linked with the elastic assembly, the elastic assembly storages a force by driving the wheel.   
     
     
         2 . The sporting device of  claim 1 , wherein the elastic assembly has at least one spring. 
     
     
         3 . The sporting device of  claim 1 , further comprising:
 two grips connected to two sides of the fixing structure, respectively, and the two grips for an user to hold;   wherein, the two grips are foldably and pivotally connected to the fixing structure.   
     
     
         4 . The sporting device of  claim 1 , wherein,
 the wheel comprises two arc holes and two tilting grooves, each of the tilting grooves is located on one inner side of each of the arc holes; and   the sporting device further comprises an inserting element disposed on the wheel and comprising:
 two inserting rods limited in the arc holes, respectively; and 
 two guiding blocks connected to an end of each of the inserting rods, respectively; 
   wherein, the inserting element is rotated for sliding each of the guiding blocks in each of the tilting grooves so as to displace the inserting element along an axial direction of the wheel.   
     
     
         5 . A sporting device, comprising:
 a fixing structure comprising:
 a board body comprising two side boards; and 
 two wheel axles connected between the two side boards, respectively; 
   four wheels, wherein two of the wheels are disposed on two ends of one of the wheel axles, respectively, and the other two of the wheels are disposed on two ends of the other one of the wheel axles, respectively; and   an elastic assembly disposed on at least one of the wheel axles and selectively linked with one of the wheels which is disposed on at least one of the wheel axles;   wherein, when the one of the wheels is unlinked with the elastic assembly, the elastic assembly would not be driven by the one of the wheels, when the one of the wheels is linked with the elastic assembly, the elastic assembly storages a force by driving the one of the wheels.   
     
     
         6 . The sporting device of  claim 5 , further comprising an inserting element, wherein the elastic assembly comprises at least one spring which surrounds the at least one of the wheel axles, the inserting element is movably disposed between the one of the wheels and the at least one spring;
 wherein when the inserting element is located at a first position, the one of the wheels is linked with the at least one spring, when the inserting element is located at a second position, the one of the wheels is unlinked with the at least one spring.   
     
     
         7 . The sporting device of  claim 6 , wherein the one of the wheels comprises two arc holes and two tilting grooves, each of the tilting grooves is located on one inner side of each of the arc holes, the inserting element is disposed on the one of the wheels and comprises:
 two inserting rods limited in the two arc holes, respectively; and   two guiding blocks connected to the end of each of the inserting rods, respectively, and each of the guiding blocks corresponds to each of the tilting grooves;   wherein, the inserting element is rotated for sliding each of the guiding blocks in each of the tilting grooves so as to displace the inserting element along an axial direction of the one of the wheels from the first position to the second position.   
     
     
         8 . The sporting device of  claim 5 , wherein, the elastic assembly comprises two springs disposed on the two wheel axles, respectively, and each of the springs is detachably connected with each of the wheels on each of the wheel axles;
 wherein, when the one of the wheels of the wheel axle disposed by each of the springs is unlinked with each of the springs, each of the springs would not be driven by the one of the wheels, and when the one of the wheels is linked with each of the springs, each of the springs storages a force by driving the one of the wheels.   
     
     
         9 . The sporting device of  claim 8 , wherein each of the springs has a fixed torque spring structure or a torsion spring structure. 
     
     
         10 . The sporting device of  claim 5 , further comprising:
 two grips connected to two sides of the board body, respectively, and the two grips for an user to hold;   wherein, the two grips are foldably and pivotally connected to the board body.