Rigid case ejecting method for short cartridge case firearm

Abstract

The invention discloses a rigid case ejecting method for a short cartridge case firearm. The method is characterized in that in a rigid case ejecting mechanism, an inclined plane which forms a chamfer is arranged on the top of a step of a case ejecting support, so that the side of the bottom end face of a cartridge case is in contact with the inclined plane under drawing of a case draw hook during case ejection, and the side of the bottom end face of the cartridge case collides with the inclined plane under drawing of the case draw hook, moves along the inclined plane in certain distance and then is ejected out of a case ejecting window. By modifying the structure of the case ejecting support, the acting relation between the cartridge case and the case ejecting support is changed. By the method, the rotating condition of the cartridge case and the time when the cartridge case is separated from the case draw hook can be changed, and the collision condition of the cartridge case and the case ejecting window during case ejection can be obviously improved, so that case ejection of the short cartridge case is reliable, and the case ejecting route is stable; and the method is suitable for case ejection of the short cartridge case of which the gravity center is close to the bottom of a cartridge.

Description

technical field [0001] The invention relates to an automatic weapon shell ejection method, in particular to a rigid shell ejection method for a short shell firearm. Background technique [0002] When shooting automatic weapon bullets, it is necessary to use an ejection mechanism to eject the shells to ensure the continuity of shooting. [0003] There are mainly two types of shell ejection mechanisms: rigid shell ejection mechanism and elastic shell ejection mechanism. Rigid shell ejection mechanisms are mostly used in pistols. Existing rigid shell ejection mechanism, its structure is as follows figure 1 As shown, it includes a casing, an extracting hook 3, an ejection ram 4 and an ejection window 1. The ejection window 1 is opened on the trajectory of the casing, and the extracting hook 3 is located on one side of the ejection window 1. , the ejection jerk 4 is arranged on the inner wall of the ballistic trajectory on the side opposite to the ejection window 1 and the shel...

AI Technical Summary

Problems solved by technology

In this process, the distance between the center of the shell bottom and the edge of the ejection window is an important factor affecting the reliability of ejection. For short shells such as 9mm Parabellum pistol shells and Type 92 9mm pistol shells, This distance is limited by the structure and is difficult to shorten

In this way, the center of gravity of the short cartridge case is on the inner side of the edge of the ejection window, so the cartridge case is not easy to turn outward after collision. When the movement speed of the bolt changes, it has a great influence on the reliability of ejection, and often occurs without ejection. or jamming failure

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