JPH073192Y2 - Barrel structure of toy gun - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to the barrel structure of a toy gun.

(Prior Art) There is a toy gun called an air gun, which holds compressed air or compressed gas inside the gun, and when the trigger of the gun is pulled, the compressed air or compressed gas is ejected and the rear end of the barrel Fire the plastic bullet that was locked to the muzzle at the tip of the barrel.
With this toy gun, about 0.1 between the inner diameter of the barrel and the outer diameter of the bullet
There is a small gap of about 0.2 mm.

(Problems to be solved by the invention) However, since such an air gun is a toy gun, there is a limit as a toy to the pressing force or the propulsive force of the air pressure or gas pressure (hereinafter simply referred to as air pressure) to the bullet. Therefore, it flies immediately at a short distance of 5 to 6 m, but it is difficult to fly immediately at a long distance of 7 m or more, and the accuracy of the landing point does not increase.

On the other hand, in the real gun, the outer diameter of the bullet is slightly larger than the inner diameter of the barrel, and this bullet is propelled and fired through the barrel, but in order to improve straightness, a spiral groove is provided on the inner circumference of the barrel. , When the bullet is fired, the spiral groove bites into the outer circumference of the bullet, and the bullet is rotated along the spiral groove to fire.

If a toy gun has the same structure as this real gun, the straightness is improved, but it is dangerous to increase the pressing force or the propulsive force of the air pressure, and it cannot be adopted as a toy gun.

Therefore, there is a demand for a toy gun that improves the straightness of the bullet without increasing the air pressure or the propulsive force and improves the accuracy of the impact point in a long distance.

(Means for Solving the Problems) This invention provides a small gap between the barrel and the outer periphery of a projectile in a toy for projecting a projectile by compressed gas, and among the gases for propelling the projectile, the gas passing through the gap. A plurality of spiral grooves for spirally rotating the are provided on the inner circumference of the barrel.

(Operation) When the trigger of a toy gun is pulled, compressed gas is ejected from a tank or the like to press the bullet, and the bullet propels in the barrel, and is ejected from the muzzle at the tip of the barrel to the outside. Of this compressed gas, the gas that passes through the slight gap between the inner circumference of the barrel and the outer circumference of the projectile and the spiral groove provided in the inner circumference of the barrel spirally swirls along this spiral groove and rotates in a spiral shape. It is ejected to the tip of the barrel. By the spiral swirling of the gas around the bullet surrounding the bullet, the bullet also swirls in the same manner and passes through the barrel and is fired from the muzzle.

Many of these bullets are made of plastic spheres, but even the spheres have a slightly rough surface, so they rub against the gas that swirls around them, giving them a rotational force. Of course, even if the bullet is not spherical, it will rotate. Therefore, the bullets fired from this toy gun spirally rotate and fly away, thus flying straight.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings. First, an example of a toy gun using the present invention will be described with reference to FIG. 5. A gun body 1 has a gun manure 2 on one side, and a magazine box 3 is detachably mounted inside the gun barrel 2. There is. The magazine box 3 is provided with a magazine 5 into which a plurality of bullets 4 made of plastic balls are inserted, a gas cylinder 6 containing a compressed gas, and a constant pressure storage chamber 7 connected to the gas cylinder 6 which is constantly filled with a gas having a constant pressure. It is provided. A barrel portion 9 having a muzzle 8 is provided on the other side of the gun body 1, and a barrel 10 made of a tubular body is slidably mounted inside a tubular hollow portion inside the barrel portion 9.
At one end of the barrel 10, a rubber tube-shaped bullet locking chamber 11
Is provided. The bullet locking chamber 11 faces the upper end opening of the magazine 5.

When the trigger 12 of the gun body 1 is pulled to the right in FIG. 5, the barrel 10 in the barrel portion 9 is retracted to the right in FIG. 5, and the bullet locking chamber 11 is the uppermost bullet in the opening of the magazine 5. Eat 4 bullets. Simultaneously with this, the bullet 4 suppresses the next bullet 4, and at the same time, the connector 14 is pulled to the left in FIG.
Rotates clockwise about its axis 15a, and when the trigger 12 is pulled off, the connection with the connector 14 is released and the hammer spring 16
The hammer 15 rapidly rotates counterclockwise about the shaft 15a due to the elasticity of. By the rotational pressing of the hammer 15, the pressing element 20 presses the tip of the discharge valve 19 protruding into the concave groove 18 at the upper end of the magazine case 3 through the connecting mechanism 17 supported by the shaft against the force of the discharge spring 21. As a result, the flange at the lower end of the discharge valve 19 is pushed down into the constant pressure storage chamber 7, and the compressed gas in the constant pressure storage chamber 7 instantaneously blows out into the discharge hole 22 and is caught in the bullet locking chamber 11. Press the bullet 4 in the top row. This causes the bullet 4 to fire from the muzzle 8 through the barrel 10 which is a trajectory.

When the trigger 12 is returned, the barrel 10 returns to its original position and the armor 13
Will open the next spare bullet 4 and will be pushed up by the spring 23 in the magazine 5 to become the uppermost bullet 4, thus completing the preparation for the next shot.

As described above, all of the series of firing operations are performed by pulling the trigger 12, and therefore, only by pulling the trigger 12, the fires are fired one after another.

Next, the barrel 10 of this invention will be described. 1 to 3
As shown in the figure, the inner peripheral surface 10a of the barrel 10 is provided with a plurality of spiral grooves 24 each having a V-shaped cross section at regular intervals, and an annular gap is provided between the outer periphery of the projectile 4 and the inner peripheral surface 10a of the barrel 10. Holding 25. This spiral groove 24 is about 10 cm to 30 in the longitudinal direction of the barrel 10.
It makes one revolution at a pitch of cm, and the depth of the V groove is about 1.5% to 5% of the diameter of the bullet 4. Further, the cross-sectional shape of the spiral groove 24 is not limited to the V groove, and may be an appropriate shape. For example, the spiral groove 24 may be wide as shown in FIG.

In the case of this embodiment, when the trigger 12 is pulled as described above, the compressed gas pushes the bullet 4, propels the inside of the barrel 10 and fires it from the muzzle 8, but the compressed gas passes through the spiral groove 24. As a result, the compressed gas passing through the annular gap is swirling and rotating.
The bullet 4 is pushed out in the direction, is given a rotational force by the spirally swirling gas around the bullet 4, is fired from the muzzle 8, and rotates and flies.

(Effects of the Invention) This invention has the above-described structure, and the gas passing through the gap between the projectile and the inner peripheral surface of the barrel is spirally swirled by the spiral groove formed in the inner periphery of the barrel, and It gives a rotational force to the bullet by spiraling gas around the outer circumference of the surroundings.It keeps the safety as a toy without increasing the propulsion force, while maintaining the safety as a toy, while maintaining the straightness of the flight of the bullet. It is intended to improve the accuracy of landing at the impact point even at a long distance of about 10 m or more. Therefore, by using the barrel of the present invention, it is possible to enjoy a highly accurate shooting competition and the like safely and soundly with a toy gun.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a perspective view of the barrel of the present invention, FIG. 2 is an enlarged side view of the same, FIG. 3 is an enlarged end view of the same when passing a bullet, and FIG. FIG. 5 is an enlarged end view of a barrel according to another embodiment of the present invention when passing a bullet, and FIG. 5 is an explanatory sectional view of a toy gun using the barrel of the present invention. In the figure, 4 is a bullet, 10 is a barrel, 10a is an inner peripheral surface, 24 is a spiral groove, and 25 is an annular gap.

Claims (1)

[Scope of utility model registration request] 1. In an air toy gun for firing a bullet through a barrel by compressed gas, a slight gap is provided between the inner circumference of the barrel and the outer circumference of the bullet to be fired, and the gap among the compressed gases for propelling the bullet is the above gap. A barrel structure of a toy gun, characterized in that a plurality of spiral grooves for spirally rotating gas passing through are provided on the inner circumference of the barrel.