Device for multi-correcting the trajectory

Abstract

Disclosed is an apparatus for multi-correcting a trajectory, the apparatus comprising a trajectory correcting unit in which a polygonal cam comprising a plurality of surfaces different in distance from a rotary center is rotatably installed between a dot sight or an optical signal and a firearm to adjust an angle between an optical axis of the dot sight or optical sight and a gun barrel axis of the firearm, wherein the trajectory correcting unit is installed to be movable in an axis direction, and coaxially provided with two or more polygonal cams to respectively set trajectory correcting angles corresponding to distances in accordance with calibers of a bullet and the kinds of bullet. With this, one dot sight or optical sight can be mounted to firearms using bullets different in the trajectory or firearms different in a caliber from one another, thereby enhancing equipment use efficiency.

What is claimed is: 
     
       1. An apparatus for multi-correcting a trajectory, the apparatus comprising a trajectory correcting unit in which a first polygonal cam comprising a plurality of surfaces different in distance from a rotary center is rotatably installed between a dot sight or an optical signal sight and a firearm to adjust an angle between an optical axis of the dot sight or optical sight and a gun barrel axis of the firearm,
 wherein the trajectory correcting unit is installed to be movable in an axis direction, and coaxially provided with two or more the trajectory correcting unit includes a second polygonal cams cam provided at a different axial position of the trajectory correcting unit than the first polygonal cam, the first and second polygonal cams being operable to respectively set trajectory correcting angles corresponding to distances in accordance with calibers of a bullet and the kinds of bullet. 
 
     
     
       2. The apparatus according to  claim 1 , further comprising a gun barrel supporter formed with a through hole, in which the trajectory correcting unit is installed, and fastened to a firearm; and
 a base formed with a contact unit to contact one of the two or more first or second polygonal cams, rotatably installed in the gun barrel supporter, and installed with the dot sight or the optical sight. 
 
     
     
       3. The apparatus according to  claim 2 , wherein the trajectory correcting unit limits an axial moving range by protrusions respectively placed at opposite end parts of an axial moving region and interfering with vicinity of the through hole. 
     
     
       4. The apparatus according to  claim 2 , further comprising a stopper that is coupled to one end part of the opposite end parts of the trajectory correcting unit selectively exposed to an outside of the gun barrel supporter and holds limits an axial moving position of the trajectory correcting unit with respect to the gun barrel supporter. 
     
     
       5. The apparatus according to  claim 4 , wherein the trajectory correcting unit is formed with includes ring-shaped insertion grooves at opposite end parts, respectively, in which an end part of the stopper is inserted. 
     
     
       6. The apparatus according to  claim 5 , wherein the stopper comprises a first projection formed at one side of an end part of the trajectory correcting unit to be inserted in the ring-shaped insertion groove, and the trajectory correcting unit comprises a second projection formed at one side of an inner circumference of the ring-shaped insertion groove and limiting a rotating radius of the first projection so that a rotary angle of the trajectory correcting unit can be limited. 
     
     
       7. The apparatus according to  claim 1 , wherein in the two or more polygonal cams of the trajectory correcting unit the first polygonal cam is adjacent the second polygonal cam, and one surface among the plurality of surfaces of the first polygonal cam is configured to have the same level as a surface of an adjacent the second polygonal cam. 
     
     
       8. The apparatus according to  claim 2 , wherein the two or more polygonal cams of the trajectory correcting unit, first polygonal cam is adjacent the second polygonal cam, and one surface among the plurality of surfaces of the first polygonal cam is configured to have the same level as a surface of an adjacent the second polygonal cam. 
     
     
       9. The apparatus according to  claim 3 , wherein the two or more polygonal cams of the trajectory correcting unit the first polygonal cam is adjacent the second polygonal cam, and one surface among the plurality of surfaces of the first polygonal cam is configured to have the same level as a surface of an adjacent the second polygonal cam. 
     
     
       10. The apparatus according to  claim 4 , wherein the two or more polygonal cams of the trajectory correcting unit the first polygonal cam is adjacent the second polygonal cam, and one surface among the plurality of surfaces of the first polygonal cam is configured to have the same level as a surface of an adjacent the second polygonal cam. 
     
     
       11. The apparatus according to  claim 5 , wherein the two or more polygonal cams of the trajectory correcting unit the first polygonal cam is adjacent the second polygonal cam, and one surface among the plurality of surfaces of the first polygonal cam is configured to have the same level as a surface of an adjacent the second polygonal cam. 
     
     
       12. The apparatus according to  claim 6 , wherein the two or more polygonal cams of the trajectory correcting unit the first polygonal cam is adjacent the second polygonal cam, and one surface among the plurality of surfaces of the first polygonal cam is configured to have the same level as a surface of an adjacent the second polygonal cam. 
     
     
       13. An apparatus for correcting a trajectory, comprising:
 a trajectory correcting unit disposed between a sight and a firearm to adjust an angle between an optical axis of the sight and a barrel axis of the firearm, the trajectory correcting unit including a first adjustor operable to select a bullet caliber and a second adjustor operable to select a distance, wherein   the trajectory correcting unit is operable to select an angle between the sight and the barrel axis of the firearm based on the bullet caliber selected by the first adjustor or the distance selected by the second adjustor.    
     
     
       14. The apparatus according to claim 13, wherein the trajectory correcting unit includes a first plurality of selections corresponding to different bullet calibers and a second plurality of selections corresponding to different distances.  
     
     
       15. The apparatus according to claim 14, wherein
 the trajectory correcting unit includes a first member having portions corresponding to each caliber and distance,   the portions corresponding to distances for respective calibers are arranged in respective paths,   the trajectory correcting unit includes a second member that contacts one of the portions of the first member to select the angle between the sight and the barrel axis of the firearm, and   the first adjustor is operable to select the path associated with the selected caliber by positioning the second member to correspond with the selected path.    
     
     
       16. The apparatus according to claim 15, wherein the second adjustor is operable to rotate to select the portion from the path of portions associated with the selected distance.  
     
     
       17. The apparatus according to claim 16, wherein
 the trajectory correcting unit includes a polygonal cam,   the portions correspond to surfaces of polygons circumferential about the cam,   the respective paths correspond to respective sets of the circumferentially arranged polygonal surfaces,   the first adjustor is operable to axially select one of the sets of the circumferentially arranged polygonal surfaces, and   the second adjustor is operable to rotate to select one of the polygonal surfaces of the set of the circumferentially arranged polygonal surfaces selected by the first adjustor.    
     
     
       18. The apparatus according to claim 17, wherein in the respective sets of the circumferentially arranged polygonal surfaces, one surface of a first polygon of a first set of the polygonal surfaces has a same level as another surface of a second, adjacent set of the polygonal surfaces.  
     
     
       19. The apparatus according to claim 13, further comprising:
 a gun barrel supporter coupled to the firearm, the gun barrel supporter including a space defined therein, the trajectory correcting unit being installed in the space; and   a base that includes a contact unit operable to contact a portion of the trajectory correcting unit determined by the first adjustor and the second adjustor.