JP4336229B2 - Gun barrel structure that increases the initial velocity of the bullet - Google Patents

Description

The present invention relates to an improvement of a gun barrel , and more particularly to a gun barrel structure capable of increasing the initial speed of a bullet or the like at the time of firing and reducing the firing sound or the like.

Since conventional gun barrels do not have a passage for sending a part of the gas to the front, such as bullets, the air inside the gun barrel is expelled from the muzzle while being compressed rapidly. Divergence in all directions as impact sound. For this reason, a part of the explosive energy of the propellant given to the bullet or the like is wasted as the impact sound generation energy and the like, and it is considered that the initial velocity of the shot bullet or the like is reduced and the firing sound or the like is large.

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Conventional gun barrels do not have a passage to send a part of the gas to the front, such as bullets, at the time of firing, so the air inside the gun barrel, etc., is rapidly compressed and the muzzle etc. It is discharged from the water and diverges in all directions as an impact sound. For this reason, a part of the explosive energy of the propellant given to the bullet etc. is wasted as this impact sound generation energy etc., and there is a serious problem that the initial velocity of the bullet etc. which are fired is reduced and the emission sound etc. is loud.

  The present invention provides a firing gas passage comprising a groove-like recess parallel to the barrel or barrel from the vicinity of the tip of the cartridge case to the vicinity of the tip of the bullet when the bullet is loaded on the inner wall of the gun barrel or the barrel. A part of the gas reaches the tip of the bullet faster than the movement of the bullet through the fire gas passage, eliminates air in the gun barrel, and causes a sudden flow of the gas to the gun muzzle, causing negative pressure in the gun barrel. By increasing the pressure, the initial velocity of the bullet at the time of firing is increased and the firing sound is reduced.

Thus , according to the present invention, if a firing gas passage made of a barrel or a groove-like recess parallel to the barrel is provided in the barrel of the gun gun or the inner wall of the barrel , a part of the projecting gas is generated during firing. the reached near the tip of the bullet, such as faster than the movement of such as bullets, negative while eliminating the air or the like in the barrel or the barrel, into the barrel or gun barrel causing rapid flow to the firing gas and the like toward the muzzle etc. By applying pressure, it is possible to increase the initial velocity of the bullet at the time of firing and to reduce the firing sound .

Hereinafter, a gun barrel structure according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is an end view in the longitudinal direction when a bullet is loaded on a gun barrel having a gun barrel structure according to this embodiment, and FIG. 2 is an end view taken along line AA of the gun barrel structure shown in FIG.
In each of the drawings, the gun barrel structure according to the present embodiment is the base side of the gun barrel 2 loaded with the bullet 3 and the cartridge case 4, and the gun gun corresponding to the tip part of the bullet 3 from the tip part of the cartridge case 4. A projecting gas passage 1 is provided on the inner wall of the body 2, and the projecting gas passage 1 is a straight line parallel to the gun barrel 2, and the section is formed by a rectangular groove-shaped recess.
Of In the fabrication This gun barrel 2, from the vicinity of the tip of the bullet 3 and the cartridge case 4 at the time of installation of the cartridge case 4 to the vicinity of the tip of the bullet 3 via the normal gun barrel 2 of the inner wall or outside or the like, parallel to the gun barrel 2 It is only necessary to provide a groove-like projecting gas passage 1 having an appropriate shape, size, length and number. However, in order to exert the maximum effect, it is considered that the shape, size, length, number, and the like of the projecting gas passage 1 need to be finely adjusted.

In a state where bullets are loaded on the gun barrel of the gun barrel structure according to this embodiment. It is an end view of a longitudinal direction. It is an end view in the AA line in FIG.

1 Firing gas passage 2 Gun barrel 3 bullet 4 shell 5 tail plug

Claims (1)

The inner wall of the barrel or gun barrel firearms, the firing gas passages consisting of parallel groove-shaped recesses in the barrel or barrel from near the tip of the medicine pods at the time of installation to the vicinity of the tip of the bullet round bullets provided, the firing gases during firing one parts are reached in the vicinity of the tip of the earlier bullet round than the movement of the street bullet round the firing gas passages, while eliminating the air in the gun relatives, firearms relatives cause rapid flow to the firing gas toward the gun port the by the negative pressure, gun barrel structure Ru reduce the firing sound with increasing initial speed of the bullet round during firing.

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