Toy gun

Abstract

Provided is a toy gun with an exterior mimicking a real gun and operating very similarly as a real gun, and the toy gun includes a main body provided with a cartridge chamber into which a projectile is loaded, a cylinder formed to reciprocate inside the main body for being ready to fire, a piston which moves backward along with the cylinder when the cylinder moves backward and enters the cylinder to provide the cartridge chamber with compressed air when the projectile is fired, a driving unit which moves the cylinder backward in the main body, and a control unit which controls power supplied to the driving unit depending on a position of the cylinder.

What is claimed is: 
     
         1 . A toy gun comprising:
 a main body including a cartridge chamber into which a projectile is loaded;   a cylinder formed to reciprocate inside the main body for being ready to fire;   a piston which moves backward along with the cylinder when the cylinder moves backward and enters the cylinder to provide a cartridge chamber with compressed air when the projectile is fired;   a driving unit which moves the cylinder backward in the main body; and   a control unit which controls power supplied to the driving unit depending on a position of the cylinder.   
     
     
         2 . The toy gun of  claim 1 , wherein the driving unit includes a cam gear which moves the cylinder backward using power generated from a motor. 
     
     
         3 . The toy gun of  claim 2 , wherein the cam gear includes a gear tooth formed at a portion of a circumference of the cam gear to selectively engage with a rack gear tooth of a rack gear portion formed under the cylinder. 
     
     
         4 . The toy gun of  claim 1 , further comprising a first sensor which senses a position of the cylinder. 
     
     
         5 . The toy gun of  claim 4 , wherein the first sensor is positioned on a moving path of a rack gear portion formed under the cylinder and senses a position of the cylinder by being in contact with the rack gear portion. 
     
     
         6 . The toy gun of  claim 5 , wherein the rack gear portion includes a contact surface in contact with the first sensor and a groove formed not to be in contact with the first sensor. 
     
     
         7 . The toy gun of  claim 1 , further comprising a second sensor which senses motion of pulling a trigger and a third sensor which senses the number of times cocking occurred. 
     
     
         8 . The toy gun of  claim 1 , wherein the cylinder includes:
 a cylinder body;   a cylinder head inserted into front end of the cylinder body;   a spring positioned between the cylinder body and the cylinder head to space the cylinder head from the cylinder body; and   a nozzle inserted into the cylinder head to pass through the cylinder head.   
     
     
         9 . The toy gun of  claim 8 , wherein the cylinder further includes a stopper to prevent separation between the cylinder body and the cylinder head. 
     
     
         10 . The toy gun of  claim 1 , wherein right and left side surfaces of the cylinder face right and left inside surfaces of the main body. 
     
     
         11 . The toy gun of  claim 1 , wherein the control unit determines a position of the cylinder while the cylinder moves backward and forward. 
     
     
         12 . The toy gun of  claim 11 , wherein the control unit cuts power supplied to the driving unit unless the cylinder returns back to an initial position. 
     
     
         13 . The toy gun of  claim 1 , wherein the driving unit further includes a locking member to fix the piston, and the locking member includes a locking protrusion having right and left slopes to ease coupling with and separating from the piston, a hole formed to pass through rear end of the locking member, and a spring which pushes the locking member forward from a rotating shaft inserted in the hole.