| 摘要 |
PROBLEM TO BE SOLVED: To provide an explosion unit of a gun. ! SOLUTION: An explosion unit is, before a trigger 3 is pulled, a hammer 2 is hooked by a front hook block. When the trigger 3 is pulled, a main rod jointly recedes, so that the front hook block and the rear hook block elastically pressed by the main rod are swung backward. When the trigger 3 is pulled slightly to make the main rod recede for a relatively short stroke, the front hook block swings back, so that the hammer 2 is released from engagement, for swinging back frontward, to hit for single explosion. When the trigger 3 is fully pulled to make the main rod recede for a relatively long stroke, the hammer 2, when swings back, does not hook on the front hook block. When a breachblock 1 moves backward to press the hammer 2 backward, the hammer 2 is hooked on the rear hook block. Thus, by pulling the trigger 3 slightly or fully, single explosion or repeating explosion is performed, for simplified structure and improved convenience of operation. |
