Exhaust structure of gas cylinder type gas gun

Abstract

The utility model discloses an exhaust structure of a gas cylinder type gas gun, which comprises a valve assembly which is connected in a gun body in a sliding manner and is matched with a trigger assembly and a return spring, the valve assembly is provided with a sealing section and a communicating section which are connected with a sealing ring on an exhaust passage in a matching manner, the diameter of the sealing section is the same as that of the communicating section, and the outer surface of the communicating section is provided with a plurality of exhaust grooves. The utility model provides the exhaust structure of the gas cylinder type gas gun, which can prevent delayed firing of bullets and has higher safety performance.

Description

Technical Field

[0001] This utility model relates to an exhaust structure for a gas cylinder-type air gun, belonging to the field of air gun technology. Background Technology

[0002] Carbon dioxide kinetic energy air guns use compressed carbon dioxide gas as power, boasting advantages such as long range, low noise, low recoil, ease of use, convenient maintenance, and high safety. They are gradually becoming a popular sporting and recreational shooting tool. The gun body contains a cylinder filled with liquefied carbon dioxide and an exhaust channel connected to the cylinder. Inside the gun body, there is also a valve assembly that works with the trigger assembly, and a return spring that pushes the valve assembly back to its original position. The exhaust channel has a sealing ring that seals with the valve assembly. The released carbon dioxide from the cylinder creates a high-pressure environment in the exhaust channel, causing the valve assembly to tend to move inward under the pressure. However, the trigger assembly... Under the obstruction of the valve assembly, it remains in a position sealed with the sealing ring. When fired, pulling the trigger releases the obstruction of the valve assembly. The pressure on the valve assembly overcomes the resistance of the return spring and the friction with the sealing ring, pushing the valve assembly inward to release the seal. High-pressure gas is then discharged from the exhaust channel, firing the bullet. During the inward movement of the valve assembly, the return spring is compressed. As the high-pressure gas in the high-pressure chamber is discharged from the exhaust channel, the pressure on the valve assembly decreases. The return spring extends, pushing the valve assembly outward to return it to the position where the valve core and sealing ring are sealed. In this position, the trigger assembly again engages with the valve assembly, preparing for the next firing. To ensure that high-pressure gas can be smoothly discharged through the exhaust passage when the valve assembly moves inward, the cross-section of the valve assembly and the sealing ring is stepped, with a larger diameter sealing section and a smaller diameter connecting section. Before firing, the sealing section is in the position of the sealing ring, and the two seal to prevent high-pressure gas from escaping from the exhaust passage. Upon firing, the valve assembly moves inward, placing the connecting section in the position of the sealing ring, creating a gap between them, and the high-pressure gas is discharged from the exhaust passage. Because liquefied carbon dioxide absorbs heat during vaporization, the temperature inside the exhaust passage is relatively high. When the carbon dioxide is almost depleted, insufficient pressure can easily occur inside the exhaust passage. Pulling the trigger releases the obstruction to the valve assembly. The pressure is insufficient to overcome the resistance of the return spring and the friction of the sealing ring on the valve assembly, keeping the valve assembly in a sealed position with the sealing ring. As the temperature gradually increases, the pressure in the exhaust passage gradually increases, pushing the valve assembly inward. When the sealing section of the existing valve assembly passes the sealing ring, the contact area decreases rapidly, causing the friction to decrease and disappear quickly. This suddenly disrupts the balance between the return spring resistance, friction, and pressure, causing a sudden increase in pressure on the spring and causing the valve assembly to move rapidly inward. This results in a large amount of gas being discharged from the exhaust passage, which can fire the bullet, causing a delayed firing situation that can easily lead to danger. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide an exhaust structure for a gas cylinder-type air gun, which can automatically release air when the air pressure is insufficient to fire the bullet, thereby preventing delayed firing, improving safety performance, and overcoming the shortcomings of the prior art.

[0004] The technical solution of this utility model is: an exhaust structure for a gas cylinder-type air gun, including a valve assembly that slides into the gun body and cooperates with a trigger assembly and a return spring. The valve assembly has a sealing section and a connecting section that cooperate with a sealing ring on the exhaust channel. The sealing section and the connecting section have the same diameter, and the outer surface of the connecting section is provided with a plurality of exhaust grooves.

[0005] Furthermore, the valve assembly includes a valve seat and a valve core, the valve core having the aforementioned sealing section and communicating section, the valve seat being slidably connected to the gun body and cooperating with the trigger assembly and the return spring, and the valve core being mounted on the valve seat and sliding together with it.

[0006] Furthermore, the valve core and valve seat are inserted and fitted together, and the valve core and valve seat have a corresponding blocking mechanism. After the valve core and valve seat are inserted, they are installed at a fixed position on the valve seat through the blocking mechanism to achieve synchronous movement.

[0007] By implementing this invention, when the valve assembly slides to the connecting section and engages with the sealing ring in the exhaust passage, there is a gap between the exhaust groove on the outer surface of the connecting section and the sealing ring. The gas in the exhaust passage passes through this gap. Since the diameters of the connecting section and the exhaust section are the same, the contact area between the sealing ring and the connecting section is not much larger than that of the exhaust section. When the carbon dioxide is almost used up and the trigger assembly is pulled to release the obstruction to the valve assembly, the pressure in the exhaust passage is insufficient to overcome the resistance of the return spring and the friction of the sealing ring on the valve assembly, so that the valve assembly remains in the position of sealing with the sealing ring. As the temperature gradually increases, the pressure in the exhaust passage gradually increases, pushing the valve assembly to slide to the connecting section and engage with the sealing ring. The contact area does not decrease much, so the friction does not change much. This will not cause a sudden disruption of the balance between the return spring resistance, friction, and pressure, and will not cause the valve assembly to move inward rapidly and discharge a large amount of gas. Only when the connecting section slides to engage with the sealing ring will the gas in the exhaust passage slowly leak through the exhaust groove without firing the bullet, thus solving the problem of delayed firing. Attached Figure Description

[0008] Figure 1 This is an existing exhaust structure;

[0009] Figure 2 This is a schematic diagram of the present invention in the ready-to-fire state;

[0010] Figure 3 This is a schematic diagram of the present invention in the deflated state;

[0011] Figure 4This is a schematic diagram of the valve core of this utility model.

[0012] The figure shows: trigger assembly 1; return spring 2; valve assembly 3; exhaust passage 4; sealing ring 5; sealing section 6; connecting section 7; exhaust groove 8; valve seat 9; valve core 10; retaining ring 11. Detailed Implementation

[0013] Embodiments of this utility model: such as Figures 1 to 4 As shown, the exhaust structure of a gas cylinder-type air gun includes a valve assembly 3 that slides within the gun body and cooperates with a trigger assembly 1 and a return spring 2. The valve assembly 3 has a sealing section 6 and a connecting section 7 that are connected to a sealing ring 5 on an exhaust passage 4. The sealing section 6 and the connecting section 7 have the same diameter. Several exhaust grooves 8 are formed on the outer surface of the connecting section 7. When the carbon dioxide in the gas cylinder is almost depleted, pulling the trigger assembly 1 releases the obstruction to the valve assembly 3. The pressure in the exhaust passage 4 is insufficient to overcome the resistance of the return spring 2 and the friction of the sealing ring 5 on the valve assembly 3, so that the valve assembly 3 remains in place. When the valve assembly 3 is in the position where the sealing section 6 and the sealing ring 5 are engaged, as the temperature gradually increases, the pressure inside the exhaust passage 4 gradually increases, pushing the valve assembly 3 to slide to the connecting section 7 and engage with the sealing ring 5. The contact area is not reduced much (the reduction is due to the opening of the exhaust groove 8). Therefore, the frictional force does not change much, and the balance between the return spring resistance, frictional force and pressure will not be suddenly disrupted. Thus, the valve assembly 3 will not move inward rapidly and discharge a large amount of gas. Instead, the gas will slowly leak through the exhaust groove 8 without firing the bullet, thereby solving the problem of delayed firing and improving the safety of use.

[0014] As a preferred embodiment, valve assembly 3 includes valve seat 9 and valve core 10, sealing section 6 and connecting section 7 are located on valve core 10, valve seat 9 is slidably connected to air pipe with exhaust passage 4, gun body is provided with return spring 2 that abuts against valve seat 9 to prevent valve 9 from moving inward and trigger assembly 1 that cooperates with valve seat 9 to abut against it, valve core 10 is installed on valve seat 9 and slides together with it to make sealing section 6 cooperate with connecting section 7 and sealing ring 5 to connect. Valve assembly 3 as a whole is difficult to process and manufacture. It can be made into valve seat 9 and valve core 10 and then assembled, which can reduce the difficulty of production.

[0015] As a preferred option, the valve seat 9 is provided with a stepped port, and the valve core 10 is inserted into the stepped port and a retaining ring 11 is provided to block the stepped surface. The valve core 10 is inserted into the valve seat 9 and installed in a fixed position on the valve seat by the retaining ring 11 blocking the stepped surface. This is more convenient to install than the traditional fixed connection method.

Claims

1. An exhaust structure for a cylinder-type air gun, comprising a valve assembly slidably mounted within the gun body and cooperating with a trigger assembly and a return spring, the valve assembly having a sealing section and a connecting section that cooperate with a sealing ring on the exhaust passage, characterized in that: The sealing section and the connecting section have the same diameter, and the outer surface of the connecting section is provided with several exhaust grooves.

2. The exhaust structure of the gas cylinder-type air gun according to claim 1, characterized in that: The valve assembly includes a valve seat and a valve core. The valve core has the aforementioned sealing section and communicating section. The valve seat is slidably connected to the gun body and cooperates with the trigger assembly and the return spring. The valve core is mounted on the valve seat and slides together with it.

3. The exhaust structure of the gas cylinder-type air gun according to claim 2, characterized in that: The valve core and valve seat are inserted into each other, and the valve core and valve seat have a corresponding blocking mechanism. After the valve core and valve seat are inserted, they are installed at a fixed position on the valve seat through the blocking mechanism to achieve synchronous movement.

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