JPH0784992B2 - Play gun - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a game gun for firing bullets by utilizing gas pressure such as compressed air pressure or gas pressure.

[0002]

2. Description of the Related Art Conventionally, there are various types of game guns that use compressed air pressure or gas pressure to shoot bullets.

The compressed air type is a system in which compressed air is produced by operating a pump and a bullet is fired by using the compressed air pressure, and a piston previously stored by a spring is opened in conjunction with a trigger. By rapidly moving the piston in the cylinder by the repulsive force of the spring, the air in the cylinder is compressed, the compressed air pressure is released from the opening or muzzle, and the bullet on its path is fired. It is something that is done.

In such a mechanism, the air pressure for each
Since the air flow rate is constant, the trajectory is stable and the accuracy of hitting is high, but on the other hand, the piston is moved by human force against the spring force, and the piston is hooked to the pawl linked with the trigger to wait for firing. It has to be put in a state, and has a drawback that the number of bullets fired per unit time is small.

The gas pressure type is a method of firing a bullet using low pressure gas, and the low pressure gas in a low pressure gas tank inside or outside the gun body is directly opened from the gas tank by opening and closing a valve linked with a trigger. It is made to emit more and the bullets on the path are fired.

With this mechanism, the bullet can be fired only by pulling the trigger, and the number of fires per unit time is remarkably higher than that of the pump type, but on the other hand, a single bullet is fired and the gas inside the gas storage chamber is released. When released, the gas pressure in the gas tank decreases, resulting in unstable ballistics and reduced accuracy. Furthermore, if the gas tank is depleted of gas, the firing of bullets is completely impossible. This inability to fire bullets due to lack of gas is a fatal drawback of gas-type air guns, and in order to prevent this, a supplementary gas tank must be carried separately, which is a heavy burden on the player.

[0007]

DISCLOSURE OF THE INVENTION The present invention has a structure having a two-sided structure of a pump type and a gas pressure type, and keeps the pressure constant by accumulating the gas pressure in a pressure chamber. The number of shots can be improved, and it can be used continuously for a long time, and the trajectory of the fired bullet can be stabilized and the accuracy of hit can be improved.

[0008]

In order to solve the above problems, the means adopted by the first invention is stretched between the inside of the gun body and constantly urged in the bullet firing direction by a spring. A cylinder is provided with a piston rod slidably inserted into the cylinder, the piston rod extending into the valve housing, the valve housing having a communication hole communicating with the outside, and a low pressure from the gas cylinder. The piston rod has an inlet for introducing gas, and the piston rod has an elastic packing at its tip that can open and close the communication hole, and the cylinder, the piston rod, and the valve housing form a closed space that is shielded from the outside air. a low pressure gas inlet valve to be introduced into the closed space and means for moving the piston rod by the operation of the trigger, said cylindrical
And a handle for moving the dar against the spring .

Further, the means adopted by the second invention is to provide a cylinder urged by a spring stretched between the inside of the gun body and a piston rod slidably inserted into the cylinder. The piston rod is slidably inserted into the space inside the valve housing, the valve housing has a communication hole communicating with the outside, and has an inlet for introducing low-pressure gas from the gas cylinder, and the piston rod slides. Thus, the elastic packing at the tip of the piston rod closes the communication hole, and a closed space is created in the cylinder, the piston rod, and the valve housing, which is shut off from the outside air.

[0010]

[Operation] When using low pressure gas, when the valve is opened, low pressure gas is introduced into the valve housing from the gas cylinder. The low-pressure gas introduced into the valve housing flows into the cylinder through the piston rod, presses the cylinder, moves backward while compressing the spring stretched on the cylinder, and the spring is in the most compressed state. Stop at. After the stop, low pressure gas is introduced,
When the pressure in the closed space inside the valve housing, the piston rod and the cylinder reaches the maximum, it stops, and the bullet is ready to fire.

In the firing of a bullet, since the elastic packing is separated from the communication hole by the movement of the piston rod and the communication hole is opened, the low pressure gas accumulated in the cylinder is discharged in the direction of the barrel, and the bullet on the path is discharged. Is fired.

Further, in the case of using compressed air pressure, when air is introduced into the cylinder, the cylinder moves in the direction of the spring, the spring moves to the most compressed position, and the piston rod moves in the same direction as the moving direction of the cylinder. Slide.

By the movement of the piston rod, the communication hole in the valve housing is opened and the outside air is sucked into the cylinder through the valve housing and the piston rod.

When the amount of air taken in is maximized,
The piston rod is pushed toward the muzzle direction by the repulsive force of the compressed spring, and the elastic packing at the tip of the piston rod closes the communication hole in the valve housing, and the repulsive force of the compressed spring and the cylinder, piston rod and valve. The pressure in the housing is kept in equilibrium and is held, and the bullet is in a standby state for firing.

When the bullet is fired, a gap is created between the packing and the communication hole in a short time when the piston rod moves, and the compressed air in the cylinder, the piston rod and the valve housing is discharged to the outside and is on its path. The bullet is fired.

[0016]

By opening and closing the valve, a cylinder for storing a low pressure gas at a constant pressure and a constant flow rate is provided on the path of the low pressure gas, the trajectory of the fired bullet is stable, and the accuracy of hit is improved. When the gas in the inside was exhausted, the cylinder was used for the purpose of producing compressed air, and it was possible to continue playing for a long time.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below with reference to the drawings. In the figure, (1) is a barrel, (2) is a bullet loading section for filling and holding a bullet integrally provided at the base end of the barrel (1) , and (3) is usually called a BB bullet. Is a bullet that is fired and the barrel (1) that is linked with the trigger, bullet
Retraction of the loading unit (2), the forward, the bullet loading part (2) can be loaded with bullets (3) in the. (4) is a valve housing, is secured to the gun body, in cylindrical form which forms one end opening to the small diameter, the small diameter tip is freely separable bullet loading portion for holding the projectile (2), the other end A guide tube (9) into which the piston rod (8) is inserted is connected to the large diameter opening. The piston rod (8) is composed of a long cylindrical body and is slidably inserted into the guide cylinder (9). The tip end opening of the piston rod (8) in the muzzle direction is closed by inserting an elastic packing (5) having a conical tip. As the piston rod (8) advances, the elastic packing (5) closes the communication hole (18) between the small diameter portion and the large diameter portion in the valve housing (4). A piston head (12) having a concave cross section is fixed to the outer peripheral portion of the other end of the piston rod (8).
A packing (13) that slidably and slidably slides inside the cylinder (10) and that keeps the inside of the cylinder (10) airtight is annularly mounted in the concave portion. Several openings (15) for introducing the low-pressure gas from the low-pressure gas cylinder into the cylinder (10) through the piston rod (8) are formed at the peripheral edge of the piston rod (8) in the muzzle direction. To be done. The opening hole (15) formed in the piston rod (8) is always open in the space defined by the valve housing (4) and the guide cylinder (9), and the piston rod (8) is formed by the guide cylinder (9). A retaining ring (6) is fixed to the outer periphery of the tip of the piston rod (8) in order to prevent the piston rod (8) from slipping out. A block (11) is fixed to the outer periphery of the center of the piston rod (8). By pulling a trigger linked with the hammer, the hammer hits the block, the piston rod (8) retracts instantly, and the communication hole ( When 18) is opened, low pressure gas is discharged into the barrel (1) through the communication hole (18). Cylinder (10)
Is a cylinder with one end open, and the rear end and the gun body (2
The spring (14) stretched between the piston head (12) and the piston head (12) contacts the closed inner end of the cylinder (10). to Rutotomoni the contact state, the state elastic packing (5) which closes the communication hole in the valve housing (4) (18)
You. In the present specification, the directions representing the relationship between the leading end and the trailing end are displayed with the firing direction of the bullet as the first and the opposite direction as the rear.

Reference numeral (7) is a low-pressure gas introduction valve, one end of which is communicated with the large diameter portion of the valve housing (4) and the other end of which is connected to a gas cylinder or the like, and the valve is opened into the valve housing (4). Introduce low pressure gas.

FIGS. 1 to 3 show the operation sequence using low pressure gas.
1 and 2, the barrel (1),Bullet loading section
By the forward and backward movement of (2),Bullet loading sectionBullet in (2)
When (3) is supplied and the valve (7) is opened, low pressure gas
Is introduced into the valve housing (4) from the gas cylinder.
It The low pressure gas introduced into the valve housing (4)
From the opening hole (15) of the piston rod (8),
Flows into the cylinder (10) through the inside of the head (8)
, Press the cylinder (10),
0) The spring (14) tensioned to
Move to and stop at the most compressed spring
It StopAlso continuesLow pressure gas is introduced and the valve housing
(4), piston rod (8) and cylinder (1
Stop when the pressure in the closed space in 0) becomes maximum
Then, the bullet is ready to fire.

To fire a bullet, pull the trigger as shown in FIG. 3 and block it with a hammer linked to it (11).
Strike backwards . The block (1
The piston rod (8) integrated with 1) moves backward and is immediately returned to its original position by the elastic force of the spring (14).

The elastic packing (5) is separated from the communication hole (18) by the movement of the piston rod (8), and the communication hole (1)
Since 8) is opened, the low pressure gas accumulated in the cylinder (10) is discharged toward the barrel, and the bullet (3) on the path is fired. Communication hole (18) after bullet firing
The piston lock that returns the spring with the elastic force of the spring (14).
The elastic packing (5) integrated with the door (8) is closed again.
It When a bullet is fired once, the pressure of the low pressure gas in the cylinder (10) drops momentarily, but since the valve is open, the low pressure gas from the gas cylinder is immediately replenished in the cylinder (10), It will be in the standby state of the bullet firing.

As described above, since the inside of the cylinder (10) acts as a kind of accumulator, the pressure and flow rate of the low-pressure gas discharged from the muzzle are always constant, and the flight distance and trajectory of the bullet are stable. .

4 to 6 show the operation sequence using compressed air pressure (pump pressure). Cylinder (10) in FIG.
Pull the handle (19) to introduce air into it . The cylinder (10) is moved toward the spring (14) in association with the handle (19), and the spring (1
4) moves to the most compressed position, and the piston rod (8) also moves due to the frictional resistance between the inner wall of the cylinder (10) and the packing (13) attached to the outer circumference of the piston head (12). Sliding in the same direction as 10).

By the movement of the piston rod (8), the communication hole (18) in the valve housing (4) is opened and the outside air is sucked into the cylinder (10) through the valve housing (4) and the piston rod (8). To be done.

When the handle (19) is returned when the amount of air taken in is maximized, the compressed spring (1
The piston rod (8) is a cylinder due to the repulsive force of 4).
The elastic packing (5) at the tip of the piston rod (8) closes the communication hole (18) in the valve housing (4) by being pushed in the muzzle direction together with the cylinder (10).
Air is compressed with the inside as a closed space. Repulsive force and the cylinder of the compressed spring (14) (10), the piston rod (8) and the cylinder is stopped when the compressed air <br/> pressure in the valve housing (4) is Tsu Do the equilibrium
If both, the firing standby state of the bullet.

[0026] To fire a bullet, a Trigger similar to the low-pressure gas-operated, as shown in FIG. 6, the spring block (11) with a hammer interlocked with the trigger (14) hit the direction instantaneously blocked ( The piston rod (8) integrated with 11) moves rearward and immediately returns to its original position.

Within the cylinder (10), the piston rod (8) and the valve housing (4), the packing (5) and the communication hole (18) come into contact with each other within a short time when the piston rod (8) reciprocates. Compressed air is released to the outside,
The bullet (3) on that path is fired.

As described above, this cylinder structure has a function of stabilizing the discharge flow rate and pressure of the low pressure gas when the low pressure gas is used, and is used for producing compressed air when the low pressure gas is not used. It was done like this. That is, only by providing a cylinder for applying pressure on the path of low-pressure gas, a low-pressure gas having a constant flow rate and a constant pressure is produced, so that the trajectory of the fired bullet is stable and the accuracy of hit is improved. Furthermore, when the low-pressure gas is exhausted, the cylinder can be used as a pump chamber, which allows continuous play for a long time.

[Brief description of drawings]

Fig. 1 Low pressure gas type operation process diagram

[Fig. 2] Low pressure gas type operation process diagram

[Fig. 3] Low pressure gas type operation process diagram

[Figure 4] Pump type operation process diagram

[Figure 5] Pump type operation process diagram

[Figure 6] Pump type operation process diagram

FIG. 7 Conventional view of pump type

FIG. 8 Conventional diagram of gas type

[Explanation of symbols]

 (1) Barrel (2) Bullet loading section (3) Bullet (4) Valve housing (5) Elastic packing (6) Retaining ring (7) Valve (8) Piston rod (9) Guide tube (10) Cylinder (11) Block (12) Piston head (13) Packing (14) Spring (15) Opening hole (16) Air storage chamber (17) Vaporization chamber (18) Communication hole (19) Handle (20) Gun body

Claims (2)

[Claims] 1. A cylinder is provided which is stretched between the inside of the gun body and is always urged in a bullet firing direction by a spring,
A piston rod slidably inserted into the cylinder is arranged, the piston rod extends into the valve housing, and the valve housing has a communication hole that communicates with the outside, and introduces low-pressure gas from a gas cylinder. The piston rod has an elastic packing capable of opening and closing the communication hole at the tip thereof, and the cylinder, the piston rod and the valve housing form a closed space that is shielded from the outside air, and the low pressure gas is closed in the closed space. a low pressure gas inlet valve to be introduced within the piston rod by the operation of the trigger
Means to move and the cylinder against the spring
A play gun having a handle for moving . 2. A cylinder urged by a spring stretched between the inside of the gun main body and a piston rod slidably inserted into the cylinder is provided, and the piston rod is inside the valve housing. The valve housing is slidably inserted into a space, the valve housing has a communication hole that communicates with the outside, has an inlet for introducing low-pressure gas from a gas cylinder, and the elastic packing at the tip of the piston rod is moved by sliding the piston rod. Cylinder,
A game gun characterized by creating a closed space that is isolated from the outside air inside the piston rod and valve housing.