JPH0351679Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a liquefied gas-filled cartridge case for a toy gun that is loaded into a toy gun and fires a bullet.

BACKGROUND TECHNOLOGY There are two types of bullet firing devices: pump type and spring type, which provide kinetic energy to the bullet. Also, depending on whether the pump or spring is installed in the gun body or in the cartridge case, there are two types: external type and internal type. There is a formula.

The problem that the invention aims to solve Conventional pump type devices are installed in the gun body where there is plenty of space, so they can increase the capacity and fire powerfully, but the operation of compressing the air with a lever is heavy and makes it difficult to fire bullets. It's a pain to do it every time,
It lacks nimbleness. In addition, the internal type had a limited firing force because a spring was installed inside the small-capacity cartridge, and the spring locking mechanism had a complicated structure and was prone to failure.

In addition, an internal type cartridge with a small capacity filled with compressed gas has been proposed. This idea was made to solve the disadvantages of internal cartridges that are filled with compressed gas.The cartridges are filled with compressed gas with sufficient firing power, making them easy to operate, highly safe, and low cost. toy gun cartridges.

Means for Solving the Problems The head is composed of a head provided with a bullet setting chamber that airtightly clamps the side periphery of the bullet under a required pressure with an elastic member, and a cartridge body provided with a gas filling chamber, and the head is attached to a firing valve that fits into the gas filling chamber inward from a valve receiving hole provided at the front end of the cartridge body, and the firing valve has its rear end connected to an expansion spring disposed in the filling chamber, and is constantly At the same time, the firing valve slides outward to block the communication path, and due to the axial compression applied to the head and the cartridge body, the firing valve slides in the opposite direction to open the communication path. In a liquefied gas-filled cartridge case for a toy gun that launches a bullet with an ejection sound by the injection force of compressed gas pressure introduced into the bullet setting chamber, a valve receiving hole is provided at the rear end of the cartridge body to communicate between the gas filling chamber and the outside. , a shaft portion is slidably fitted into this as an injection valve, and a valve seat formed at the front end is connected to the rear end of the expansion spring, so that the valve seat is pressed against the inner surface of the rear end wall of the gas filling chamber, and the valve seat is connected to the rear end of the expansion spring. In addition to closing the receiving hole, the axial center of the shaft of the injection valve is connected to a nozzle connection hole that opens on the outer surface of the rear end wall and a communication hole that opens on the outer circumference of the shaft on the rear side of the valve seat, and a gas cylinder is connected to the injection valve. This liquefied gas filled cartridge case for a toy gun is characterized in that the cartridge body is directly connected to the cartridge body and the gas filling chamber is filled with liquid gas.

Function Since this device is constructed as described above, the gas filling chamber provided in the cartridge case is equipped with an expansion spring that expands back and forth, with a firing valve at the front end and an injection valve at the rear end. are provided to press and close the respective peripheries of the valve receiving holes opening on the outer surfaces of the front and rear end walls, thereby retaining compressed gas inside. To inject liquefied gas into the gas filling chamber, use a gas cylinder, fit the nozzle into the connection hole of the injection valve, and push it forward.The injection valve will slide forward and the rear end of the gas filling chamber will be injected. The valve seat is spaced apart from the inner surface of the wall, and the communication hole in the shaft portion opens into the filling chamber. For example, in a gas cylinder in which the nozzle also serves as an on-off valve, the liquid gas in the cylinder is injected into the filling chamber through the nozzle and through the communication hole for the sliding action of the nozzle.

EXAMPLE Below, this invention will be explained with reference to a drawing which is an example of its implementation.A cartridge case 1 of this invention is composed of a head 1a into which a bullet 3 is set, and a cartridge main body 1b which is filled and accommodated with liquid gas. A bullet setting chamber 2 is provided on the inner peripheral wall with an elastic material such as rubber cylindrical packing 17 surrounding it, and the bullet setting chamber 2 accommodates the bullet 3 while airtightly sandwiching the side periphery with a predetermined pressure. The rear of the setting chamber 2 communicates with a communicating support tube 5a that is provided integrally with the head 1a, and the rear end of this support tube 5a is provided within the cartridge body 1b. It is slidably fitted into the gas filling chamber 6 through the valve receiving hole 7 at the front end, and its rear end surface is connected to the front end of the expansion spring 8 housed in the gas filling chamber 6, and the whole body slides forward. The valve seat 9 provided at the rear end of the support cylinder 5a is pressed against the inner surface of the front end wall 1b1 of the gas filling chamber 6, and the bullet is connected to the bullet setting chamber 2 of the head 1a through the communication hole 22 that opens from the front of the valve seat 9 to the outer periphery. The firing valve 5 is provided in the firing valve 5, which blocks communication with the spring pressure. Next, the cartridge body 1b
The rear end wall 1b2 is provided with a valve receiving hole 10 that communicates with the air chamber 6 and the outside, into which the shaft portion 11a as the injection valve 11 is slidably fitted, and the valve seat 12 formed at the front end is inserted into the valve receiving hole 10, which communicates with the air chamber 6 and the outside. It is connected to the rear end of the expansion spring 8 and presses against the rear inner wall of the gas filling chamber 6, and the valve receiving hole 1 is connected to the rear end of the expansion spring 8.
At the same time, the axial center of the shaft portion 11a of the injection valve 11 is provided with a nozzle connection hole 13 that opens on the rear end surface and a communication hole 16 that opens on the axial circumference on the rear side from the valve seat 12.
Provided in communication with.

Note that 18, 20, and 21 are O-rings, and 19 is an O-ring presser washer.

Since this device is constructed as described above, the gas filling chamber 6 provided in the cartridge case is equipped with an expansion spring 8 that expands back and forth, and the firing valve 5 is directed toward the front end and the gas is injected toward the rear end. A valve 11 is provided to press and close the periphery of valve receiving holes 7 and 10 that open at the front and rear ends, and to hold compressed gas inside.
To inject liquefied gas into the gas filling chamber 6, generally use a commercially available lighter replenishment gas cylinder 14, fit the nozzle into the connection hole 13 of the injection valve 11, and push it forward. By sliding forward, the valve seat 12 is separated from the inner surface of the rear end wall 1b2 of the gas filling chamber 6, and the communication hole 16 of the shaft portion 11a is opened to the filling chamber 6. For example, nozzle 15
In the gas cylinder 14 which also serves as an on-off valve, the liquid gas in the cylinder 14 for the sliding operation of the nozzle 15 is injected into the filling chamber 6 from the communication hole 16 through the nozzle 15. The filling chamber 6 is then filled with compressed gas. When it is fully filled, it overflows from the connection hole 13, so if the nozzle 15 is immediately pulled out, the injection valve 11 returns due to the action of the expansion spring 8, and the filling chamber 6 is closed, completing the filling. In this way, the required number of cartridges 1 are filled with compressed gas, and the bullets 3 are set. The cartridge case 1 thus prepared is automatically loaded into the gun 23 from a magazine (not shown), for example. When the hammer 24 collides with the rear end of the cartridge 1, since the head 1a of the cartridge 1 is supported by the front wall of the loading port 25, it is reduced in size with the cartridge body 1b, and the valve seat 9 of the firing valve 5 is reduced in size.
is separated from the front inner wall of the gas filling chamber 6, and the communication hole 2 is separated from the front inner wall of the gas filling chamber 6.
2 and the communication passage 5a1, the gas filling chamber 6 and the bullet setting chamber 2 are opened to each other. Therefore, the gas pressure is applied to the bullet setting chamber 2, and when it reaches the maximum value, that is, the same pressure as the gas chamber 6, or a value close to it, the bullet 3 is released from the clamping force and is fired with the gas pressure that is injected all at once. The bullet 3 is then fired to the target through the muzzle 26. The next action is to move the hammer 24 backwards,
The cartridge is ejected, a new cartridge 1 is loaded, and the cartridge is ready for firing again.

Effects As described above, according to this invention, since a bullet holding elastic member is provided at the head of the cartridge, the gas pressure filled in the gas filling chamber is stored to the maximum and is injected at once, resulting in explosive firing force. It is powerful and has a high rate of fire. Further, since the single expansion spring 8 installed in the gas filling chamber serves as both the gas injection valve and the firing valve, manufacturing costs can be reduced. In addition, the liquefied gas can be completely injected from the rear end opposite to the bullet, and since the compressed gas from the liquefied gas cylinder is used, it is easy to use, the injection gas pressure is constant, and there is no danger in handling. be. Furthermore, compared to conventional spring-type firing devices, it has a simpler structure, provides stronger firing force, and generates a jetting sound when firing, making it extremely immersive.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal side view of this invented cartridge, FIG. 2 is a longitudinal side view when it is filled with liquefied gas, and FIG. 3 is a cross-sectional plan view when it is loaded into a gun and a bullet is fired. 1...This invented cartridge, 1a...head, 1b...
Cartridge body, 1b1...front end wall, 1b2...rear end wall, 2...bullet set chamber, 3...bullet, 5...firing valve, 7...valve receiving hole, 8...expansion spring, 9... Valve seat, 10... Valve receiving hole, 11... Injection valve, 12...
Valve seat, 13... Nozzle connection hole, 14... Gas cylinder, 15... Nozzle, 17... Rubber cylindrical packing, 18, 20, 21... O ring.

Claims (1)

[Scope of utility model registration request] It is composed of a head provided with a bullet setting chamber that airtightly clamps the side periphery of the bullet under a required pressure with an elastic member, and a cartridge body provided with a gas filling chamber, and the head is provided at the front end of the cartridge body. The firing valve is attached to a firing valve that fits into the gas filling chamber inside from the valve receiving hole, and the firing valve has a rear end connected to an expansion spring disposed in the filling chamber, and constantly slides outward. At the same time, the firing valve slides inward in the opposite direction due to the axial compression applied to the head and cartridge body, opening the communication path and allowing the compression to be introduced into the bullet setting chamber. In a liquefied gas-filled cartridge case for a toy gun that uses the injection force of gas pressure to launch a bullet with an injection sound, a valve receiving hole communicating between the gas filling chamber and the outside is provided on the rear end wall of the cartridge body, and this hole is used as an injection valve. The shaft part is slidably inserted, and the valve seat formed at the front end is connected to the rear end of the expansion spring, which presses against the inner surface of the rear end wall of the gas filling chamber and closes the valve receiving hole. The axis of the shaft of the injection valve is connected to the nozzle connection hole that opens on the outer surface of the rear end wall and the communication hole that opens on the outer periphery of the shaft on the rear side of the valve seat, and a gas cylinder is directly connected to the injection valve. A liquefied gas-filled cartridge case for a toy gun, characterized in that the main body is filled with liquid gas into a gas filling chamber.