Abstract:
A continuous firing structure is provided for color bullet of a cap gun. The cap gun has a main body with a machine unit. The continuous firing structure mainly comprises a bullet barrel at one end of the main body and a through hole between the bullet barrel and the unit for the operation of a pushing cylinder and a discharge pin. The pushing cylinder and the discharge pin are used with a spring for continuous firin

Description:
BACKGROUND OF THE INVENTION  
         [0001]    (A) Field of the Invention  
           [0002]    The present invention relates to a continuous firing structure for color bullet.  
           [0003]    (B) Description of the Prior Art  
           [0004]    The conventional cap gun with color bullet is fired by operating the trigger of the cap gun for intermittently shooting. The cap gun may be provided with electromagnetic valve for continuous shooting. However, the electromagnetic valve requires battery, which is inconvenient.  
         SUMMARY OF THE INVENTION  
         [0005]    It is the object of the present invention to provide a continuous firing structure for color bullet.  
           [0006]    To achieve above object, a continuous firing structure is provided for color bullet of a cap gun. The cap gun has a main body with a machine unit. The continuous firing structure mainly comprises a bullet barrel at one end of the main body and a through hole between the bullet barrel and the unit for the operation of a pushing cylinder and a discharge pin. The pushing cylinder and the discharge pin are used with a spring for continuous firing the color bullet of a cap gun.  
           [0007]    The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing, in which: 
       
    
    
     BRIEF DESCRIPTION OF DRAWING  
       [0008]    [0008]FIG. 1 shows a sectional view of the main body of the present invention;  
         [0009]    [0009]FIG. 2 shows a sectional view of the shell ejecting means of the present invention;  
         [0010]    [0010]FIG. 3 shows another sectional view of the shell ejecting means of the present invention;  
         [0011]    [0011]FIG. 4 shows a sectional view of the bullet barrel of the present invention;  
         [0012]    [0012]FIG. 5 shows a sectional view of the pushing cylinder of the present invention;  
         [0013]    [0013]FIG. 6 shows a sectional view of the annulus washer of the present invention;  
         [0014]    [0014]FIG. 7 shows a sectional view of the switch of the present invention; and FIG. 8 shows a sectional view of the discharging pin of the present invention. 
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0015]    As shown in FIG. 1, the cap gun with continuous shooting feature comprises at least one main body  1  with air conduit and a thread hole  210  near a muzzle thereof. The thread hole  210  is used to lock a bullet barrel  22 . A pushing cylinder  23  and a discharge pin  24  are slidably arranged in the bullet barrel  22 . The bullet barrel  22  is communicated with a switch  160  through a throttle  170  and a pressure adjuster  100  through a venting hole  20 . The main body  1  has a coupling loop  63  connected to a CO 2  bottle (not shown). The switch  160 , the throttle  170  and the pressure adjuster  100  are well known art and will not be described in detail here. The pushing cylinder  23  is detached from the discharge pin  24  by air pressure to shoot the color bullet.  
         [0016]    With reference now to FIGS. 1, 4,  5 ,  6 , and  7 , the main body  1  has a stepped hole  21  at left side thereof and the thread hole  210  is at leftmost side. The stepped hole  21  contains a larger bore  211  and a smaller bore  212 . The venting hole  20  is communicated with the smaller bore  212 . The bullet barrel  22  has a cylinder on topside thereof and a center bore  47  on bottom thereof and concentric with the cylinder, as shown in FIG. 4. The center bore  47  comprises a larger bore  472  on right side and a smaller bore  471  on left side. The pushing cylinder  23  has a stepped cylinder  230  on right side thereof as shown in FIG. 5 and the pushing cylinder  23  is embedded into the center bore  47 . The stepped cylinder  230  has a stepped post  231  on right side thereof and covered with an embowed groove  233  to mount a sealing loop  48 . The pushing cylinder  23  has a center bore  49  and the stepped post  231  has a hole  234  at center thereof. The hole  234  has two embowed grooves  232  to mount a sealing loop  50 . A spring  26  is inserted therein. As shown in FIG. 6, an annulus washer  51  is provided and has a center hole  510 , which has venting hole  52  communicating with a right plane. As shown in FIG. 9, the discharge pin  24  is cylindrical shape and has an outer thread  241  at right side and a cone  242  at left side. The discharge pin  24  has a recess  243  at right side of the cone  242  and a blocking ring  244  at right side of the cone  242 . As shown in FIG. 5, the cone  242  of the discharge pin  24  is inserted into the hole  234  and fit with the sealing loop  50 . The sealing loop  50  is matched with the blocking ring  244 . As shown in FIG. 6, the right side of the discharge pin  24  is fit with the center hole  53  of the annulus washer  5 . As shown in FIG. 1, the spring  27  is fit to the right side of the discharge pin  24 . As shown in FIG. 9, the pin sleeve  25  is cylinder shape and has a stopping ring  251  on right side thereof and has a center hole with inner thread. The spring  27  is fit to the outer surface of the pin sleeve  25 . The inner thread of the pin sleeve  25  is screwed to the inner thread  241  of the discharge pin  24 . The left end of the presses on the spring  27  is abutted to the center hole  510  of the annulus washer  51 , as shown in FIG. 6 The right side of the spring  27  is abutted to the stopping ring  251 . The annulus washer  51  is arranged on the larger bore  211  of the main body  1 . The outer thread of the bullet barrel  22  is fit into the inner thread of the main body  1  such that the right end of the bullet barrel  22  is abutted to the annulus washer  51 . When compressed air is fed into the stepped hole  21  and reaches a predetermined value overcoming the elasticity of the spring  26 , the pushing cylinder  23  and the discharge pin  24  are moved leftward. When both ends of the spring  27  are pressed between the annulus washer  51  and the pin sleeve  25 , the discharge pin  24  stops moving as the spring  27  is pressed to its limit. At this time, the pushing cylinder  23  is pushed leftward and the pushing cylinder  23  naturally detaches from the sealing loop  50 . The pressed air is blown off from the center bore  49  of the pushing cylinder  23  to shoot the bullet. Due to the limit of the throttle  170  and the pressure adjuster  100 , the presses air is not instantly supplied. The discharge pin  24  is restored to initial state due to the tension of the spring  27 , and then the pushing cylinder  23  is restored to initial state due to the tension spring  26 . Therefore, the stepped hole  234  is locked to the cone  242  and sealed with the sealing loop  50  for next shooting. For continuous shooting, the user keeps his finger on the trigger and the switch  160  keeps opening, the air is supplied from a steel bottle. The pushing cylinder  23  and the discharge pin  24  are in cyclic operation for continuous shooting.  
         [0017]    As shown in FIGS. 2 and 3, the bullet barrel  22  has a bullet entrance  54  at left side thereof and connected to the smaller bore  47 . A slanting hole  55  for ejecting shell is provided at same location and an elongate slit  56  is opposite to the slanting hole  55 . The elongate slit  56  has a cylindrical pin  57  at right side thereof. The cock  31  has a hook at left side thereof and a rectangular block at right side thereof. The rectangular block has an elliptical groove  58  at center thereof and assembled with the cylindrical pin  57 . The cock  31  has a small hole  59  at center thereof and the elongate slit  56  has also a slanting hole  60  at right side thereof. The two slanting holes are connected by a draw spring  61  such that the rectangular block presses against the outer surface of the pushing cylinder  23  and the pushing cylinder  23  has a bevel  235  corresponding to the rectangular block. The cartridge  30  is of cylindrical shape and has a center bore slidably fit with the bullet. When the pushing cylinder  23  is moved leftward, the bevel  235  pushes the root  310  of the cock  31  and the elliptical groove  58  is slid along the cylindrical pin  57 . At the same time, the pushing cylinder  23  pushes leftward the bullet in the cartridge  30 . After the bullets are depleted, the pushing cylinder  23  rapidly restores to original position. The cartridge  30  is pushed by the cock and ejected through the slanting hole. Another cartridge  30  can be easily loaded.  
         [0018]    As shown in FIG. 3, the main body  1  has two stair holes  2 ,  3  with inner thread on the rightmost ends thereof and coupling loop  63  is engaged into the inner thread. The coupling loop  63  has a two-steps post having an embowed groove fit into a sealing loop  70 . The embowed groove has an outer thread and the coupling loop  63  has a larger bore  75 . The small post has a venting hole  74  connected with the larger bore  75 . The nut  68  is of three stages with rightmost stage having a blocking ring. The other two stages of the nut  68  have inner threads of different sizes. The bore has inner thread at left end and stair hole at right end and an inner thread at rightmost end and venting hole  71  at center and connected to the inner thread and the stair hole. The spring cover  65  is of cylindrical shape and has an inner hole at right end thereof. The inner hole has a via hole  72  and an outer thread engaged with inner thread of the nut  68 . The inner hole has a spring  67  and a steel ball  64 . With absence of external force, the ball  64  is pushed by the spring  67  to seal the venting hole  71 . The valve  66  is of cylindrical shape and has an inner hole at right end thereof and the inner hole has an inner thread engaged with the outer thread of the nut  68 . A plurality of leak holes  73  is provided on left side of the inner thread. The valve  66  has a separation with the spring cover  65  and the coupling loop  63 . When the nut  68  is connected to an air storage bottle, the pressed air presses the steel ball  64  and compresses the spring  67  and through the via hole  72  to strike the inner wall of the inner hole of the valve  66  to form vapor of higher purity. The vapor passes through the gap between the leak holes  73  and the coupling loop  63  and passes through the venting hole  74  and the through hole  4  to enter the main body. The sealing loops  69  and  70  are fit into the embowered groove of the coupling loop  63  and the nut  68  to seal the vapor.  
         [0019]    Although the present invention has been described with reference to the preferred embodiment thereof, it will be understood that the invention is not limited to the details thereof. Various substitutions and modifications have suggested in the foregoing description, and other will occur to those of ordinary skill in the art. Therefore, all such substitutions and modifications are intended to be embraced within the scope of the invention as defined in the appended claims.