Dart Having An Adjustable Barycenter

Abstract

A dart having an adjustable barycenter is provided. The dart includes a tip, a barrel, a counterweight, and a flight unit. The tip is detachable and assembled at a front end of the barrel. The barrel has a receiving space configured inside the barrel. The counterweight is accommodated in the receiving space at an adjustable position. The flight unit is assembled at a tail end of the barrel. The dart according to the present invention is adapted for adjusting the barycenter thereof by adjusting a position of the counterweight in the receiving space.

1 . A dart having an adjustable barycenter, comprising:
 a tip;   a barrel, a receiving space configured inside the barrel, wherein the tip is detachably assembled at a front end of the barrel;   a counterweight, accommodated in the receiving space at an adjustable position, wherein a longitudinal length of the counterweight is much shorter than that of the receiving space; and   a flight unit, assembled at a tail end of the barrel.   
   
   
       2 . The dart according to  claim 1 , wherein the tip and the barrel are adapted for repetitively disassembling and assembling, wherein the receiving space comprises a first inner thread configured at an inner fringe of an opening adjacent to a front end of the receiving space, and the tip comprises a connection section at a rear end of the tip, the connection section being configured with an external thread configured at a peripheral thereof, and the external thread of the connection section of the tip being spirally engaged with the first inner thread of the barrel for enclosing the receiving space. 
   
   
       3 . The dart according to  claim 1 , wherein the barrel comprises a tenon projected from an inner wall of the receiving space, and the counterweight is configured with a plurality of annular grooves at different positions of a peripheral outer wall of the counterweight, wherein the position of the counterweight fixed in the receiving space can be varied by engaging the tenon to different grooves. 
   
   
       4 . The dart according to  claim 1 , wherein the dart further includes at least one counterweight block received in the receiving space. 
   
   
       5 . The dart according to  claim 1 , wherein the flight unit comprises a flight and a shaft which are integrally configured. 
   
   
       6 . The dart according to  claim 1 , wherein the flight unit comprises a flight and a shaft which are independent and detachable, and the shaft has a plurality of engaging slots allowing the flight to be directly inserted and fixed therein. 
   
   
       7 . The dart according to  claim 1 , wherein the barrel has a third inner thread configured projecting from an inner wall surface of a middle section of the receiving space, and the counterweight further comprises an external thread configured at a section of the outer wall of the counterweight, wherein the counterweight is spirally engaged with the external thread of the counterweight by the third inner thread of the receiving space, so that a relative position of the counterweight in the receiving space can changed by rotating the counterweight.