Feeder for Air Gun and Air Gun

Abstract

A feeder B as shown in FIG. 1 is constructed so that a nozzle unit ( 2 ) is located in a cylinder unit ( 11 ) of a bullet-firing unit ( 1 ), and that in response to the movement of a piston unit ( 12 ) is capable of being connected to or disconnected from the piston unit ( 12 ), and where a bullet-feed port ( 3 b ) can be closed or opened. Furthermore, with a force that is greater than the force of an elastic member (nozzle spring) ( 22 ) and a force that is less than the engagement force between a locking section ( 21 a ) and a locked section ( 12 g ), a joint unit ( 124 ) connects the piston head ( 121 ) with the piston body ( 123 ), and within a limited space, efficiently increases the amount of time that the bullet-feed port ( 3 b ) is open. In this way, it is possible to improve durability of the feeder and increase reliability of feeding bullets, as well as it is possible to reproduce the operation of a real gun that can be taken down. Moreover, it is possible for the user to easily replace the feeder.

1 . A feeder for air gun comprising: a bullet-firing means having a piston unit and cylinder unit that is engaged with the piston unit so that it can slide, and that by way of compressed air that is generated by the back-and-forth motion of the piston unit fires bullets that are fed upward from a bullet-feed port that is located at the front of the piston unit and oriented in a direction that is orthogonal to the direction of back-and-forth motion of the piston unit; and a nozzle means that together with being located in said cylinder unit so that it is capable of back-and-forth motion over a specified distance so that it closes or opens said bullet-feed port, and so that it is capable of automatically moving back-and-forth from the opened state to the closed state of the bullet-feed port, is constructed so that in response to forward motion of the piston unit can be connected to the piston unit, and in response to backward motion of the piston unit can be disconnected from the piston unit; wherein in response to the forward motion of said piston unit, said nozzle means that is connected with the piston unit is moved said specified distance to open said bullet-feed port, and with the stroke amount of said specified distance as a boundary, the nozzle means is disconnected from the piston unit and automatically closes said bullet-feed port. 
   
   
       2 . The feeder for air gun according to  claim 1  wherein said cylinder unit comprises: a cylindrical cylinder body, and a ring-shaped cylinder head that is located on the tip end section of the cylinder body, and in which a continuous hole having a specified diameter is formed through its center; and said nozzle means comprises: a cylindrical nozzle body that together with being inserted in said continuous hole so that it can slide said specified distance, has a locking section located on its base section, and closes said bullet-feed port by the surface on the side of its tip-end section; and an elastic member having one end that engages with said cylinder head, and other end that engages with said nozzle body and presses said nozzle body in the forward direction; wherein a concave section, in which the base-end section of said nozzle body is inserted, is formed on the end surface of said piston unit, and a locked section, which can be engaged with or released from said locking section, is formed inside the concave section. 
   
   
       3 . The feeder for air gun according to  claim 2  wherein said piston unit comprises: a piston head, a piston body and a joint unit that together with bringing together said piston head and said piston body with a force that is greater than the force of said elastic member, and a force that is less than the engagement force between said locking section and locked section, connects them so that they can move through a stroke having a specified distance. 
   
   
       4 . The feeder for air gun according to  claim 2  or  claim 3  comprising a hollow-shaft shaped chamber in which the tip-end section of said nozzle body is inserted, and in which said bullet-feed port is located part way along its length; wherein said chamber is fixed to and integrated with said cylinder head. 
   
   
       5 . An air gun in which the feeder for air gun of any one of the  claims 1  to  4  is mounted, and comprising a gun barrel side of the air gun body and a trigger side of the air gun body; wherein said bullet-firing means comprises: a rack that is located on the side surface of said piston unit, and a piston spring that extends inside said piston unit and moves the piston unit forward; and together with at least said bullet-firing means and said nozzle means being mounted in said gun barrel side so that they can be installed or removed, a trigger mechanism comprising a sector gear that engages with said rack is mounted in said trigger side; wherein said gun barrel side and trigger side are connected so that they can be taken down.