Balance valve and percussion structure of air gun

Abstract

The utility model relates to the technical field of air guns, in particular to a balance valve of an air gun and a percussion structure, which comprise a valve cavity, a valve plug, a valve rod, a valve rod, a valve rod, a valve rod and a valve rod, one end of the valve element is inserted into the mounting hole and provided with a first sealing ring, and the end, close to the air outlet hole, of the valve element is provided with a second sealing ring; the reset spring pushes the valve element to move towards the air outlet hole through elastic force. The balance rod is movably arranged in the air outlet hole and connected to the other end of the valve element, and a third sealing ring is arranged at the end, away from the valve element, of the balance rod. According to the balance valve, no matter the air pressure is high or low, due to the fact that the pressure borne by the two ends is consistent, the valve can be opened only by overcoming the pre-pressure of the reset spring, and therefore the force needed for opening the valve is reduced; in addition, the mass of related parts can be smaller and lighter, the valve opening force is lighter, vibration generated when the air gun is fired is reduced, and the shooting precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of air gun technology, and in particular to a balance valve and firing structure for an air gun. Background Technology

[0002] The power source for firing lead bullets in existing air guns is pressurized gas. When firing, the hammer strikes the exhaust core under the action of the spring force, opening the valve of the gas chamber, so that the pressurized gas in the gas chamber is connected to the gun barrel. Then the pressurized gas in the gas chamber impacts the lead bullet in the gun barrel, causing the lead bullet to be fired at the target.

[0003] The valve body structure of an air gun is a crucial component that provides the firing power, and its quality directly affects the firing power of the gun. Existing air guns have a large exhaust mandrel diameter, resulting in a large pressure-bearing area for the exhaust. Consequently, the gas pressure in the air chamber exerts significant pressure on the exhaust. Higher air pressure requires a stronger valve opening force, leading to greater vibration and requiring more effort from the user.

[0004] For example, Chinese utility model patent CN205605902U discloses a valve body structure for an air gun, including a valve seat with an inlet chamber and an outlet chamber. In the inlet chamber, from left to right, are arranged a shut-off nut, a shut-off spring, a valve core, and a shut-off needle. The valve core and the shut-off needle are fixedly connected as a single unit. One end of the shut-off spring abuts against the shut-off nut, and the other end abuts against the valve core. The valve core abuts against the inner wall of the valve seat. A connector is threaded into the outlet chamber, and a valve opening head is threaded onto the connector near the shut-off needle. One side of the valve opening head abuts against the shut-off needle. Since the high-pressure gas enters the valve seat, the valve opening head needs to overcome the force of the shut-off spring and the high-pressure gas to fire. However, the higher the air pressure inside the valve seat, the greater the thrust required by the valve opening head, and the greater the vibration generated by the air gun. Utility Model Content

[0005] The purpose of this invention is to provide a balance valve for an air gun to solve the problems mentioned in the background art.

[0006] The above-mentioned objective of this utility model is achieved through the following technical solution: a balance valve for an air gun, comprising a valve chamber, one end of which is provided with an air outlet, and further comprising:

[0007] The valve plug is fixed inside the valve cavity and has an axially penetrating mounting hole;

[0008] The valve core has one end inserted into the mounting hole and is provided with a first sealing ring at that end, and a second sealing ring is provided at the end near the air outlet.

[0009] A reset spring is provided in the mounting hole, which pushes the valve core toward the air outlet by its elastic force.

[0010] A balance bar is movably disposed within the air outlet and connected to the other end of the valve core, with a third sealing ring provided at the end of the balance bar away from the valve core.

[0011] Preferably, the valve cavity is provided with a conical outlet at one end near the air outlet, and the second sealing ring abuts against the inner wall of the conical outlet.

[0012] Preferably, the diameter of the air outlet is equal to the diameter of the mounting hole, and the diameter of the balance bar is smaller than the diameter of the air outlet.

[0013] Preferably, a movable guide post is provided in the mounting hole, and the reset spring presses against the valve core through the guide post.

[0014] Preferably, the balance bar and the valve core are connected by threads, and the second sealing ring is fixed between the two end faces of the balance bar and the valve core.

[0015] Another objective of this invention is to provide a balance valve for an air gun that reduces the valve opening force, reduces vibration generated during air gun firing, and improves shooting accuracy.

[0016] The above-mentioned objective of this utility model is achieved through the following technical solution: an air gun firing structure, comprising a gun body, a gun barrel, a high-pressure air chamber, a firing pin, and a balance valve, characterized in that the high-pressure air chamber is connected to the valve chamber, the air outlet is connected to the gun barrel through a connecting hole, a second sealing ring and a third sealing ring are respectively disposed on the left and right sides of the connecting hole, an insertion hole is provided at the end of the air outlet away from the valve chamber, and the firing pin is inserted into the insertion hole and used to strike the balance bar.

[0017] Preferably, the balance bar is provided with a limiting step, and the third sealing ring is fixed to the outside of the limiting step.

[0018] Preferably, the connecting hole and the vent are arranged in a cross shape, and a sealing screw is provided at the end of the connecting hole away from the barrel.

[0019] The beneficial effects of this utility model are:

[0020] Regardless of whether the air pressure is high or low, the balance valve of this invention operates under consistent pressure at both ends. It only requires overcoming the preload of the return spring to open the valve, thereby reducing the force required to open it. Furthermore, the related parts can be made smaller and lighter, requiring less force to open the valve, reducing vibration during air gun firing, and improving shooting accuracy. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0022] Figure 2 This is a cross-sectional view of an embodiment of the present utility model;

[0023] Figure 3 This is a cross-sectional view of the balance valve in an embodiment of this utility model;

[0024] In the diagram: 1-gun body, 101-high-pressure gas chamber, 102-connection hole, 103-insertion hole, 2-gun barrel, 3-balance valve, 301-valve chamber, 302-gas outlet, 303-valve core, 304-valve plug, 305-mounting hole, 306-guide post, 307-return spring, 308-first sealing ring, 309-balance bar, 310-second sealing ring, 311-conical outlet, 312-third sealing ring, 313-limiting step, 4-firing pin, 5-sealing screw, 6-lead bullet. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present utility model.

[0027] Example: Figure 1 , Figure 2 and Figure 3 As shown, an air gun firing structure includes a gun body 1, a gun barrel 2, a high-pressure air chamber 101, a firing pin 4, and a balance valve 3. The gun barrel 2 is fixed to the gun body 1, the balance valve 3 is located below the gun barrel 2, and the high-pressure air chamber 101 is located below the balance valve 3 and is used to connect to a gas cylinder.

[0028] like Figure 3 As shown, the balance valve includes a valve chamber 301, an air outlet 302, a valve plug 304, a valve core 303, a return spring 307, and a balance rod 309. The air outlet 302 is located at one end of the valve chamber 301 and communicates with the air outlet 302. The air outlet 302 is connected to the gun barrel 2 through a connecting hole 102. The high-pressure air chamber 101 is connected to the valve chamber 301.

[0029] The valve plug 304 is fixed inside the valve cavity 301 and is installed via a threaded connection. The valve plug 304 has an axially penetrating mounting hole 305, which is distributed horizontally opposite to the air outlet 302. The mounting hole 305 is connected to the external atmospheric pressure.

[0030] The valve core 303 is disposed in the valve cavity 301, with one end inserted into the mounting hole 305 and a first sealing ring 308 installed at that end, which is used to block the mounting hole 305; the other end of the valve core 303 is close to the air outlet 302 and a second sealing ring 310 is installed at that end, which is used to block the air outlet 302.

[0031] The valve cavity 301 has a conical outlet 311 at one end near the air outlet 302, and the second sealing ring 310 presses against the inner wall of the conical outlet 311.

[0032] The reset spring 307 is installed in the mounting hole 305. It pushes the valve core 303 towards the air outlet 302 by its elastic force. The mounting hole 305 is provided with a movable guide post 306. The reset spring 307 presses against the valve core 303 through the guide post 306. The reset spring 307 presses against the valve cover of the balance valve (not shown in the figure).

[0033] The balance bar 309 is movably disposed within the air outlet 302 and connected to the other end of the valve core 303. A third sealing ring 312 is installed on the end of the balance bar 309 away from the valve core 303. The balance bar 309 and the valve core 303 are connected by threads, and the second sealing ring 310 is fixed between the two end faces of the balance bar 309 and the valve core 303.

[0034] The second sealing ring 310 and the third sealing ring 312 are respectively located on the left and right sides of the connecting hole 102. The end of the air outlet 302 away from the valve cavity 301 is provided with an insertion hole 103, wherein the insertion hole 103 is connected to the air outlet 302 and is connected to the external atmospheric pressure.

[0035] The firing pin 4 is inserted into the socket 103. An impact hammer is installed at the other end of the firing pin 4. After the impact hammer strikes the firing pin 4, the firing pin 4 strikes the balance bar 309, causing the balance bar 309 to move to complete the firing action.

[0036] A limiting step 313 is provided on the balance bar 309, and the third sealing ring 312 is fixed on the outside of the limiting step 313 to prevent the balance bar 309 from disengaging from the vent 302 and entering the insertion hole 103.

[0037] The connecting hole 102 and the vent hole 302 are arranged in a cross shape, and a sealing screw 5 is provided in the end of the connecting hole 102 away from the barrel 2.

[0038] The diameter of the vent 302 is equal to the diameter of the mounting hole 305, and the diameter of the balance rod 309 is smaller than the diameter of the vent 302. Thus, when high-pressure gas enters the valve chamber 301 from the high-pressure chamber 101, the first sealing ring 308 and the second sealing ring 310 at both ends of the valve core 303 are simultaneously pressurized. Because the pressure-bearing areas are the same, they are balanced under the influence of gas pressure.

[0039] like Figure 3 As shown, in the absence of air pressure, the return spring 307 presses against the valve core 303 through the guide post 306, the second sealing ring 310 adheres to the inner wall of the conical outlet 311 to form a pre-pressure, and the valve cavity 301 forms a seal.

[0040] When high-pressure gas enters the valve cavity 301 from the high-pressure gas chamber 101, the first sealing ring 308 and the second sealing ring 310 at both ends of the valve core 303 are simultaneously compressed. At this time, under the elastic force of the return spring 307, the valve core 303 is pre-pressed to the right to form a seal.

[0041] When the firing device (trigger and hammer) strikes the balance bar 309 to the left, since the first sealing ring 308 and the second sealing ring 310 have the same pressure area, it is only necessary to overcome the preload of the return spring 307 to open the valve and release the high-pressure gas. The high-pressure gas enters the barrel 2 through the connection hole 102 and acts on the lead bullet 6 for firing.

[0042] After firing, the air pressure in the valve chamber 301 returns to normal. Since the second sealing ring 310 and the third sealing ring 312 have the same pressure-bearing area, they form a balanced pressure when subjected to air pressure. Under the pre-compression of the return spring 307 to the right, the second sealing ring 310 presses against the inner wall of the conical outlet 311 to close the valve, waiting for the next firing.

[0043] Compared to traditional air gun valves, which require greater opening force and generate more vibration due to higher air pressure, the new balanced valve operates regardless of air pressure. Because the pressure at both ends is consistent, it only needs to overcome the preload of the return spring 307 to open. This allows for smaller, lighter components, less opening force, reduced vibration, and improved accuracy.

Claims

1. A balance valve for an air gun, comprising a valve chamber (301), wherein one end of the valve chamber (301) is provided with an air outlet (302), characterized in that, Also includes: The valve plug (304) is fixed inside the valve cavity (301) and has an axially through mounting hole (305). The valve core (303) has one end inserted into the mounting hole (305) and is provided with a first sealing ring (308) at that end, and a second sealing ring (310) is provided at the end near the air outlet (302). A return spring (307) is provided in the mounting hole (305) and pushes the valve core (303) toward the air outlet (302) by elastic force; A balance bar (309) is movably disposed within the air outlet (302) and connected to the other end of the valve core (303). A third sealing ring (312) is provided at the end of the balance bar (309) away from the valve core (303).

2. The balance valve of an air gun according to claim 1, characterized in that: The valve chamber (301) is provided with a conical outlet (311) at one end near the air outlet (302), and the second sealing ring (310) presses against the inner wall of the conical outlet (311).

3. The balance valve of an air gun according to claim 1, characterized in that: The diameter of the air outlet (302) is equal to the diameter of the mounting hole (305), and the diameter of the balance bar (309) is smaller than the diameter of the air outlet (302).

4. The balance valve of an air gun according to claim 1, characterized in that: A movable guide post (306) is provided in the mounting hole (305), and the reset spring (307) presses against the valve core (303) through the guide post (306).

5. The balance valve of an air gun according to claim 1, characterized in that: The balance bar (309) is connected to the valve core (303) by a thread, and the second sealing ring (310) is fixed between the two end faces of the balance bar (309) and the valve core (303).

6. A firing structure for an air gun, characterized in that, The gun includes a receiver (1), a barrel (2), a high-pressure gas chamber (101), a firing pin (4), and a balance valve (3) as described in any one of claims 1-5. The high-pressure gas chamber (101) is connected to the valve chamber (301), and the vent (302) is connected to the barrel (2) through a connecting hole (102). The second sealing ring (310) and the third sealing ring (312) are respectively disposed on the left and right sides of the connecting hole (102). The end of the vent (302) away from the valve chamber (301) is provided with an insertion hole (103). The firing pin (4) is inserted into the insertion hole (103) and is used to strike the balance bar (309).

7. The air gun firing structure according to claim 6, characterized in that, The balance bar (309) is provided with a limiting step (313), and the third sealing ring (312) is fixed to the outside of the limiting step (313).

8. The air gun firing structure according to claim 6, characterized in that, The connecting hole (102) and the vent hole (302) are arranged in a cross shape, and a sealing screw (5) is provided in the end of the connecting hole (102) away from the barrel (2).

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