TWM682014U - Air gun firing mechanism - Google Patents

Abstract

This invention proposes an air gun firing structure comprising a hammer assembly, a push rod movably coupled to the hammer assembly at a coupling end, and a linkage assembly fixed to and movably coupled to the hammer assembly. The coupling end forms an upper guide plate, a side guide plate, and a lower hook. The hammer assembly includes a hammer base, a hammer body mounted and movably mounted within the hammer base, a pin movably connected to the hammer body vertically, and a hammer hook connected to the hammer body within the hammer base and extending out of the hammer base with a guide portion. The hammer hook is rotatable to push the hammer body in one direction. The hammer holder has a first slot on its side, allowing a pull block of the hammer body to protrude and move. A first spring is installed inside the hammer body, and the hammer hook is connected to a second spring. The hammer holder has a second slot on its upper surface for the hammer hook to rotate, and a third slot for the upper guide plate to pass through and move. The hammer holder also has a guide ramp on its side.

Description

Air gun firing mechanism

This invention relates to a component of an air gun, particularly an air gun firing mechanism for guiding gas to complete the loading and firing actions.

An air gun is a shooting device that uses compressed air, gas, or a spring mechanism as power to fire BBs, soft air bullets, or other projectiles. Unlike firearms, air guns do not use gunpowder, resulting in lower noise, less lethality, and lower operating costs. They are commonly used in sports shooting, competitive events, and recreational activities.

In terms of recreational applications, air guns are commonly found in survival games. In terms of usage, these air guns are mostly automatic electric guns (AEG), gas blowback guns (GBB), high-pressure air guns (HPA), or spring guns, and their forms can include common firearms such as machine guns, sniper rifles, rifles, and pistols. For the sake of realism in the game, these air guns often mimic the appearance of famous firearms, giving players a more realistic combat experience. For safety reasons, the bullets fired by air guns are usually plastic BBs or soft air cartridges. When players are hit by a bullet, they feel pain, but it doesn't cause serious injury. With the addition of protective gear such as goggles and vests, the safety level of air rifle games is comparable to that of general physical games. However, for players, simply firing traditional air rifle bullets is quite different from real combat scenarios. The most obvious difference is that air rifles don't have the ejection action of traditional guns. To compensate for this shortcoming, some air rifle manufacturers have recently produced bullets with ejectable casings. When used with an air rifle, this allows the ejection of the casing after firing the bullet, simulating a real gun's ejection action while simultaneously chambering the next round. However, currently, air rifles with ejectable casings are mostly long guns. The reason is simple: long guns have a larger internal space, making it easier to accommodate sophisticated and complex firing mechanisms and gas storage space. For handheld short air guns (pistols), the main design bottleneck lies in how to fit a feasible gas magazine and firing mechanism into a smaller space.

This paragraph extracts and compiles certain features of this novel invention. Other features will be disclosed in subsequent paragraphs. Its purpose is to cover various modifications and similar arrangements within the spirit and scope of the additional patent application.

The new invention provides an air gun firing mechanism that can be used in ejector cartridge air guns, and can also be applied to air guns that directly fire BBs, soft air cartridges or other single-bullet cartridges.

To meet market demand, this invention proposes an innovative air gun firing structure. The aforementioned air gun firing structure is installed inside the receiver of an air gun supplied with air from a magazine. It includes a hammer assembly, a push rod movably coupled to the hammer assembly at a coupling end, and a linkage assembly fixed to and movably coupled to the hammer assembly. Its features include: the coupling end forming an upper guide plate, a side guide plate, and a lower catch; the hammer assembly includes a hammer base, a hammer body installed and movable within the hammer base, a pin movably connected to the hammer body, and a pin connected to the hammer body at the coupling end. A hammer hook is connected to the hammer holder and extends from the hammer holder via a guide portion. The hammer hook is rotatable to push the hammer body in one direction. A first slot is provided on the side of the hammer holder, allowing a pull block of the hammer body to protrude and move. A first spring is installed inside the hammer body, and a second spring is connected to the hammer hook. The hammer holder has a second slot on its upper surface for the hammer hook to rotate, and a third slot for the upper guide plate to pass through and move. A guide ramp is formed on the side of the hammer holder. When the push rod is in the ready-to-fire position, the... The end portion of the upper guide plate protrudes from the third slot. The lower hook holds the pull block, and the hammer hook stretches the second spring and locks the hammer body. When the push rod moves from the ready-to-fire position to the firing position, the lower hook moves the pull block, the hammer body moves to release the hammer hook, the side guide plate contacts the guide ramp and is subjected to a reaction force that moves the coupling end downward, thereby releasing the pull block. The hammer body is rebounded by the first spring, which drives the ejector pin to open the magazine's exhaust valve and release high-pressure gas. The push rod reaches the firing position. After returning to the ready-to-fire position, the upper guide plate moves up to partially protrude from the third slot, and the lower hook engages the pull block to continuously allow the exhaust valve to release high-pressure gas. After the high-pressure gas supplied by the exhaust valve fires the air gun bullet, a portion of the linkage continues to move backward, pressing the upper guide plate down into the third slot and rotating the hammer hook to pull the hammer body. After the ejector pin releases the exhaust valve to stop releasing high-pressure gas, the upper guide plate moves up to partially protrude from the third slot, and the lower hook engages the pull block again.

According to this invention, the hammer body forms a guide surface perpendicular to the direction of movement, and a pair of trapezoidal guide plates are formed on the guide surface; the hammer head has a trapezoidal sliding block that can move between the pair of trapezoidal guide plates, an impact portion is formed above the trapezoidal sliding block, a limiting block is formed at each end of the impact portion, and a hook portion is formed below it, the hook portion being connected to one end of a third spring, the third spring... The other end of the spring is fixed inside the hammer seat; when the magazine is inserted into the air gun, the periphery of the exhaust valve pushes the impact part upward, simultaneously stretching the third spring. When the lower latch moves the pull block, the impact part disengages from contacting the periphery of the exhaust valve and is pulled back by the restoring force of the third spring until the limit blocks are locked at the same end of the pair of trapezoidal guide plates. At this time, the impact part faces the exhaust valve.

In one embodiment, a locking block extends from the pull block on the side of the hammer body, and a locking portion is formed at the end of the locking block. The hammer hook forms a circular through hole, which is rotatably connected to the interior of the hammer seat through an inserted pivot. A locking groove is formed on one side of the hammer hook, and an opening and a locking hook are formed on one side of the locking groove. When the linkage moves backward and rotates the hammer hook through the guide, the hammer hook pushes the hammer body and causes the locking portion to enter the locking groove through the opening. When the hammer hook stops rotating, the locking hook engages the locking portion. When the locking hook engages the locking part, and the push rod moves from the ready position to the firing position, the lower hook moves the pull block to move the hammer body. At this time, the locking hook disengages from the locking part, and the hammer hook is pulled back by the restoring force of the second spring until it stops because the movement of the guide part is restricted by the end of the second slot.

According to this invention, a sliding groove is formed on one side of the upper part of the hammer seat. In this structure, the linkage assembly further includes: a pressurized chamber, one end of which is fully open, and the other end forming a circular opening. A bleed seat extends from the lower end of the circular opening and is coupled to the sliding groove. A high-pressure air passage is formed in the bleed seat to guide the high-pressure gas supplied by the exhaust valve into a receiving space within the pressurized chamber; and a gas guide tube, a rubber fastener of which is coupled to a cartridge case inside the air gun to guide high-pressure gas in for propelling the cartridge. The air gun is designed for the following: a piston is installed in the accommodating space and in close contact with the inner wall of the accommodating space, and can be moved outward from the accommodating space by the pressure of high-pressure gas; and a movable frame is connected to the sliding sleeve of the air gun at its upper part, and forms a linkage seat inside, which extends and is installed inside the piston. When the piston is pushed and moved by high-pressure gas, the linkage seat will also move, thereby moving the movable frame backward.

An annular groove is formed on the inner edge of the circular opening. An O-ring is tightly connected to the air duct and is installed in the annular groove to ensure an airtight seal between the air duct and the pressure chamber. A receiving groove is formed below the movable frame. When the movable frame is not moved backward, the end portion of the upper guide plate protrudes from the third slot and extends into the receiving groove. When the movable frame moves backward, the upper guide plate leaves the receiving groove and is pressed down into the third slot below the movable frame. The piston has an air inlet and an air outlet at one end facing the circular opening. The air inlet receives high-pressure air from the pressure chamber and enters the piston. The air outlet connects to the opening at the sealed end of the air guide tube, guiding the high-pressure air entering the piston into the air guide tube.

The aforementioned air gun firing mechanism allows for the operation of assisted loading, firing, and opening of the exhaust valve to release high-pressure gas within a confined internal space of the air gun. In addition to being compatible with traditional direct-fire air guns, it is particularly suitable for short-barreled handheld air guns using composite cartridges, representing a unique innovation in the current air gun manufacturing industry.

This invention will be described more specifically by referring to the following embodiments.

Please refer to Figures 1 and 2. Figure 1 is a cross-sectional view of an air gun 2 with the air gun firing mechanism 1 of this invention installed, and Figure 2 is a three-dimensional view of the air gun firing mechanism 1. In this embodiment, the air gun 2 is similar in appearance to a GLOCK pistol. However, this invention does not limit the shape and type of the air gun 2, but a handheld air gun with a narrow internal space is preferred. The main structure of the air gun 2 includes the main components such as the gun body 2a, a magazine 2b that supplies high-pressure gas (such as compressed air, propane, or carbon dioxide) and bullets, a slide 2c, a barrel 2d, a recoil mechanism 2e, and a trigger mechanism 2f. The novel air gun firing mechanism 1 is installed inside the receiver 2a of the air gun 2, which is supplied with gas by the magazine 2b. It utilizes the limited space to operate the firing of the bullet and the return to a ready-to-fire state. In this embodiment, the air gun 2 can fire BBs and eject spent cartridges; in practice, this novel design can also be applied to other air guns that directly fire bullets. The magazine 2b has a gas reservoir 2b-1 for storing high-pressure gas and a gas outlet valve 2b-2 for releasing high-pressure gas. Figure 1 shows some of the components of this invention: the air gun firing structure 1 of this invention includes a hammer assembly 10, a push rod 20 movably coupled to the hammer assembly 10 via a coupling end 21, and a linkage assembly 30 fixed to the slide sleeve 2c of the air gun 2 and movably coupled to the hammer assembly 10. The following, with reference to the relevant figures, describes in detail the type and function of these technical components, as well as the state of the air gun firing structure 1 during operation.

Please see Figure 3, which is a three-dimensional view of the push rod 20. Structurally, the push rod 20 includes the aforementioned coupling end 21 and a connecting end 22. In order to couple with the hammer assembly 10 and perform specific actions, the coupling end 21 forms an upper guide plate 211, a side guide plate 212, and a lower hook 213. The design function of these special structures will be described in detail later. The coupling end 22 is used to interact with existing components of the air gun 2. It includes a trigger linkage plate 221 and a spring hook 222. The former is coupled to the trigger mechanism 2f of the air gun 2. When the trigger mechanism 2f is pulled, it actuates the coupling end 21. The latter is connected to the return spring S1 inside the air gun 2 in Figure 1. After the trigger mechanism 2f is pulled, it returns to its original position using the restoring force of the return spring S1. The push rod 20 is a plate-shaped structure that can be formed by stamping a metal plate. The flat structure of the push rod 20 itself prevents it from interfering with other components of the air gun 2 during its reciprocating motion. In particular, the bending design in the middle section avoids the magazine well.

Please refer to Figures 4 and 5. Figure 4 is a three-dimensional view of the hammer assembly 10, and Figure 5 is an exploded view of the hammer assembly 10. The hammer assembly 10 includes a hammer base 11, a hammer body 12, a striker 13, a hammer hook 14, and a pivot 15. The hammer base 11 is installed in the receiver 2a, near the web of the hand when holding the gun, and is used to install the hammer body 12, the striker 13, and the hammer hook 14, and is coupled to the linkage assembly 30 and the push rod 20. The hammer body 12 is installed and movable within the hammer seat 11. The pin head 13 is vertically movable and connected to the hammer body 12. The hammer hook 14 is connected to the hammer body 12 within the hammer seat 11 and extends out of the hammer seat 11 with a guide part 141.

The hammer seat 11 is wider at the top and narrower at the bottom. A second slot 112 for the hammer hook 14 to rotate and a third slot 113 for the upper guide plate 211 to pass through and move are formed on the upper part of the hammer seat 11. A sliding groove 114 is formed on one side of the upper part of the hammer seat 11. A guide ramp 115 is formed on the side of the hammer seat 11, and a first slot 111 is provided, which allows a pull block 121 of the hammer body 12 to protrude and move. In addition, a hinge hole 116 is also provided on the side of the hammer seat 11. The hinge hole 116 is not circular but playground-shaped, allowing an object inserted into the hinge hole 116 to not only rotate but also move.

Please refer to Figures 6 to 8. Figure 6 shows the hammer body 12 and the ejector pin 13 in their combined state. Figure 7 is an exploded view of the hammer body 12 and the ejector pin 13. Figure 8 shows the hammer body 12, the ejector pin 13, and the hammer hook 14. The hammer body 12 is installed in the hammer seat 11 and can move within a certain range. The lower limit position of the hammer body 12 is where the pull block 121 is locked at the end of the first slot 111, and its upper limit position is the highest point reached by the lower hook 213 when the push rod 20 moves. A receiving space A1 is provided inside the hammer body 12. A first spring S2 (as shown in Figure 5) is installed in the receiving space A1. One end of the first spring S2 can be fixed to the hammer seat 11 by a fixing member 122. In this way, when the hammer body 12 is brought from the lower limit position to the upper limit position, the first spring S2 is compressed. When the lower catch 213 is released and contacts the pull block 121, the restoring force of the first spring S2 can bring the hammer body 12 back from the upper limit position to the lower limit position. As a result, the ejector pin 13 is driven to open the gas valve 2b-2 of the magazine 2b and release the high-pressure gas in the gas groove 2b-1. The hammer body 12 has a guide surface 123 perpendicular to the direction of movement, and a pair of trapezoidal guide plates 1231 are formed on the guide surface 123. The side shape of the trapezoidal guide plates 1231 is fixed, with a smaller width at the connection with the guide surface 123 and a larger width at the outer edge. In addition, on the side where the pull block 121 of the hammer body 12 is located, a locking block 124 extends from the pull block 121 to form a locking part 1241, and the end of the locking block 124 forms a locking part 1241, which has an appearance similar to a barb.

The ejector pin 13 is the main body used to impact the exhaust valve 2b-2 of the magazine 2b. However, when the magazine 2b is inserted into the air gun 2, the exhaust valve 2b-2 interferes with the ejector pin 13 and cannot be positioned. Therefore, this invention uses a special design to combine the ejector pin 13 with the hammer body 12 to solve this problem. As shown in Figure 7, the ejector pin 13 has a trapezoidal sliding block 131 that can move between the pair of trapezoidal guide plates 1231. An impact part 132 is formed above the trapezoidal sliding block 131. The impact part 132 is the specific part where the ejector pin 13 impacts the exhaust valve 2b-2. A limiting block 133 is provided at each end of the impact part 132, and a hook part 134 is formed below the impact part 132. The hook 134 is connected to one end of a third spring S3, and the other end of the third spring S3 is fixed inside the hammer seat 11 through a pin P1. When the magazine 2b is inserted into the air gun 2, the periphery of the gas valve 2b-2 pushes the impact part 132 upward, simultaneously stretching the third spring S3. When the lower latch 213 moves to pull the block 121, the impact part 132 will disengage from the periphery of the gas valve 2b-2 and be pulled back by the restoring force of the third spring S3 until the limit blocks 133 are locked at the same end of the pair of trapezoidal guide plates 1231, as shown in Figure 6. At this time, the impact section 132 will face the exhaust valve 2b-2 so that it can be opened later to release the high-pressure gas.

Please refer to Figures 5, 8, and 9, where Figure 9 is a three-dimensional view of the hammer hook. The side of the hammer hook 14 approximates the shape of a bird, with the aforementioned guide portion 141 forming the beak portion. The hammer hook 14 has a circular through hole 142, which is rotatably connected to the interior of the hammer seat 11 through an insertable pivot 15. A locking groove 143 is formed on one side of the hammer hook 14, and an opening 1431 and a locking hook 1432 are formed on the other side of the locking groove 143. The design of the hammer hook 14 is closely related to the operation of the hammer body 12. The hammer hook 14 has a connecting rod 144 for connecting one end of a second spring S4. The other end of the second spring S4 is fixed inside the hammer seat 11 via the pin P2.

As shown in Figure 8, when the linkage assembly 30 moves backward (the movement method and form will be described in detail later) and rotates through the guide part 141 (in the direction of the arrow in the figure) to strike the hammer hook 14, the hammer hook 14 pushes the hammer body 12 and causes the locking part 1241 of the locking block 124 to enter the locking groove 143 through the opening 1431. When the hammer hook 14 stops rotating, the locking hook 1432 hooks the locking part 1241. It can be seen that the hammer hook 14 can rotate to push the hammer body 12 in one direction. At this time, the second spring S4 is stretched by force. When the locking hook 1432 engages the locking part 1241, and the push rod 20 moves from the ready-to-fire position to the firing position (the ready-to-fire position and the firing position will be described in detail later), the lower locking hook 213 moves the pulling block 121 to move the hammer body 12, at which point the locking hook 1432 disengages from the locking part 1241. The hammer hook 14 is pulled back by the restoring force of the second spring S4 until it stops because the movement of the guide part 141 is restricted at one end of the second slot 112.

Please refer to Figures 10 and 11. Figure 10 is a perspective view of the linkage assembly 30 and the coupled hammer assembly 10 and push rod 20. Figure 11 is an exploded view of the linkage assembly 30. Figure 10 is used to illustrate the connection relationship between the linkage assembly 30, the hammer assembly 10, and the push rod 20. Therefore, the position of the linkage assembly 30 is rotated 90 degrees relative to the hammer assembly 10 and the push rod 20, so that the bottom of the linkage assembly 30 and the top of the hammer assembly 10 can be seen more clearly. Structurally, the linkage assembly 30 includes a pressure chamber 31, an air duct 32, a piston 33, and a movable frame 34.

Please refer to Figures 11 and 12 simultaneously. These figures are cross-sectional views of the pressure chamber 31 in Figure 11 along section AA'. In Figure 12, one end (left end) of the pressure chamber 31 is completely open, and the other end forms a circular opening 311, as shown in Figure 11. A bleed seat 312 extends from the lower end of the circular opening 311. The bleed seat 312 can be engaged in the sliding groove 114 above the hammer seat 11. Therefore, the hammer seat 11 forms a stationary element relative to the hammer seat 11 in the linkage assembly 30. A high-pressure air passage 3121 is formed in the bleed seat 312. The high-pressure air passage 3121 is used to guide the high-pressure gas provided by the exhaust valve 2b-2 into a receiving space A2 in the pressure chamber 31.

The gas tube 32 is a cylindrical tube with two ends. One end of the gas tube 32 is first tightly connected to a rubber fastener 321 and then connected to a circular hole 343 on a movable frame 34. The rubber fastener 321 is then coupled to a cartridge case. The elasticity of the rubber material and the cartridge case create an airtight seal to ensure that the gas pressure does not leak when the high-pressure gas is introduced into the cartridge case and propels the bullet through the barrel 2d of the air gun 2. The other end 322 of the gas tube 32 is tightly connected to the air chamber 31 at the circular opening 311. An annular groove 313 is formed on the inner edge of the circular opening 311 of the pressure chamber 31, and an O-ring 323 is formed near the sealing end 322 of the air duct 32. The O-ring 323 is installed in the annular groove to ensure that the air duct 32 and the pressure chamber 31 are airtight.

Please refer to Figures 11 and 13 simultaneously. Figure 13 is a cross-sectional view of the linkage assembly 30. The piston 33 is installed in the accommodating space A2 and is in close contact with the inner wall of the pressure chamber 31. It can move movably outward from the accommodating space A2 (towards the left of Figure 13) due to the pressure of the high-pressure gas. The function of the piston 33 is to guide the high-pressure gas in the accommodating space A2 into the gas inlet tube 32, and after the projectile is fired, to use the continuously output high-pressure gas to push out of the accommodating space A2 through the circular opening 311, thereby driving the movable frame 34 to move backward. To further explain, the end of the piston 33 facing the circular opening 311 is provided with an air inlet 331 and an air outlet 332. The air inlet 331 receives high-pressure air from the pressure chamber 31 and enters the piston 33, while the air outlet 332 is connected to the opening of the air guide tube 32 at the tight end 322, which can guide the high-pressure air entering the piston 33 into the air guide tube 32.

Please refer to Figure 14, which is a three-dimensional view of the movable frame 34. The movable frame 34 is an elongated frame with an open internal space. The upper part of the movable frame 34 is connected to the slide 2c of the air gun 2, and a linkage seat 341 is formed inside it. The linkage seat 341 extends and is installed inside the piston 33. Please see Figure 15, which compares the high-pressure gas flow results under two conditions. The left side of the figure shows that when the high-pressure gas just enters the accommodating space A2, due to the lower air pressure in the direction of the air guide tube 32, the high-pressure gas flows through the outlet 332 to the air guide tube 32, as indicated by the black unidirectional arrow. The right side of the figure shows that during the firing of the projectile, the pressure in the gas guide tube 32 gradually increases. In addition to continuously overflowing towards the gas guide tube 32, the high-pressure gas also exerts a reverse thrust on the piston 33, as indicated by the black double-arrow symbol. When the piston 33 is pushed and moved by the high-pressure gas, the linkage seat 341 also moves, causing the movable frame 34 to move backward (left side of Figure 15). Referring again to Figure 14, a key design feature of the movable frame 34 is the formation of a receiving groove 342 beneath it. When the movable frame 34 is not moving backward, the end portion of the upper guide plate 211 of the push rod 20 protrudes from the third slot 113 and extends into the receiving groove 342. When the movable frame 34 moves backward, the upper guide plate 211 will move away from the receiving groove 342 due to the relative movement, thereby pressing the flat part below the movable frame 34 into the third slot 113.

The following diagrams illustrate the operation of the air gun firing mechanism 1. Since the main action is between the hammer assembly 10 and the push rod 20, the linkage assembly 30 in these diagrams has been removed for ease of explanation.

Please refer to Figure 16, which shows the push rod 20 in the ready-to-launch position. When the push rod 20 is in the ready-to-launch position, the end portion of the upper guide plate 211 protrudes from the third slot 113, the lower hook 213 abuts against the pull block 121, and the hammer hook 14 stretches the second spring S4 and locks the hammer body 12.

Please refer to Figure 17, which shows the push rod 20 moving from the ready-to-fire position to the firing position. As the push rod 20 moves from the ready-to-fire position to the firing position, the lower latch 213 moves and pulls the block 121. The hammer body 12 moves to release the hammer hook 14, and the side guide plate 212 contacts the guide ramp 115. The reaction force moves the coupling end 21 downward, thereby releasing the pull block 121. The hammer body 12 is rebounded by the first spring S2, which drives the ejector pin 13 to open the gas valve 2b-2 of the magazine 2b, releasing high-pressure gas. At this time, the relative positions of the push rod 20 and the hammer assembly 10 are as shown in Figure 18, with the push rod 20 in the firing position.

Please refer to Figure 19, which shows the push rod 20 returning to the ready position after reaching the firing position. After the push rod 20 returns to the ready position after reaching the firing position, the upper guide plate 211 moves upward to partially protrude from the third slot 113, and the lower hook 213 locks the pull block 121 to continuously allow the air valve 2b-2 to release high-pressure gas.

After the high-pressure gas supplied by the exhaust valve 2b-2 fires the bullet of the air gun 2, it continues to push a part of the linkage assembly 30 (piston 33 and movable frame 34) backward, pressing the upper guide plate 211 into the third slot and rotating the hammer hook 14 to pull the hammer body 12. After the ejector pin 13 releases the exhaust valve 2b-2 to stop releasing the high-pressure gas, the upper guide plate 211 will move upward again to partially protrude from the third slot 113, and the lower hook 213 will once again press against the pull block 121.

Although the present invention has been disclosed above by way of embodiment, it is not intended to limit the present invention. Anyone skilled in the art may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of the appended patent application.

1: Air gun firing mechanism 2: Air gun 2a: Shutter 2b: Magazine 2b-1: Gas groove 2b-2: Gas valve 2c: Slide 2d: Barrel 2e: Recoil mechanism 2f: Trigger mechanism 10: Hammer assembly 11: Hammer seat 111: First slot 112: Second slot 113: Third slot 114: Sliding groove 115: Guide ramp 116: Connecting hole 12: Hammer body 121: Pulling block 122: Fixing component 123: Guide surface 1231: Trapezoidal guide plate 124: Locking block 13: Lead pin head 131: Trapezoidal sliding block 132: Impact part 133: Limiting block 134: Hook 14: Hammer hook 141: Guide part 142: Circular through hole 143: Locking groove 1431: Opening 1432: Locking hook 144: Connecting rod 15: Rotating component 20: Push rod 21: Coupling end 211: Upper guide plate 212: Side guide plate 213: Lower hook 22: Connecting end 221: Trigger linkage plate 222: Spring hook 30: Linkage assembly 31: Pressure chamber 311: Circular opening 312: Air bleed seat 3121: High-pressure air passage 313: Annular groove 32: Air duct 321: Rubber material fixing component 322: Close-fitting end; 323: O-ring; 33: Piston; 331: Air inlet; 332: Air outlet; 34: Movable bracket; 341: Linkage seat; 342: Receiving groove; 343: Circular hole; A1: Receiving space; A2: Receiving space; P1: Pin; P2: Pin; S1: Return spring; S2: First spring; S3: Third spring; S4: Second spring.

Figure 1 is a cross-sectional view of an air gun with the new air gun firing structure installed.

Figure 2 is a three-dimensional view of the air gun firing structure.

Figure 3 is a three-dimensional view of the pusher.

Figure 4 is a three-dimensional view of the hammer assembly.

Figure 5 is an explosion diagram of the hammer assembly.

Figure 6 illustrates the state in which the hammer body and the pin head are combined.

Figure 7 shows the exploded view of the hammer body and the pin.

Figure 8 illustrates the hammer body, the hammerhead, and the hammer hook.

Figure 9 is a three-dimensional view of the hammer hook.

Figure 10 is a three-dimensional diagram of the linkage combination and the coupled hammer combination and push rod.

Figure 11 is an exploded view of the linkage combination.

Figure 12 is a cross-sectional view of the pressure cabin along section AA' in Figure 11.

Figure 13 is a cross-sectional view of the linkage combination.

Figure 14 is a three-dimensional view of the movable frame.

Figure 15 compares the high-pressure gas flow results under the two conditions.

Figure 16 shows the push rod in the ready-to-launch position.

Figure 17 shows the push rod moving from the ready position to the firing position.

Figure 18 shows the push rod in the firing position.

Figure 19 shows the push rod returning to the ready position after being pushed to the firing position.

1: Airgun firing mechanism

10: Hammer Combo

20: Push

21: Coupler terminal

22: Union end

30: Linked combination

Claims (10)

An air gun firing mechanism, installed inside the receiver of an air gun supplied with air from a magazine, includes a hammer assembly, a push rod movably coupled to the hammer assembly at a coupling end, and a linkage assembly fixed to a slide of the air gun and movably coupled to the hammer assembly, characterized in that: the coupling end forms an upper guide plate, a side guide plate, and a lower catch; The hammer assembly includes a hammer seat, a hammer body installed and movable within the hammer seat, a pin vertically movably connected to the hammer body, and a hammer hook connected to the hammer body within the hammer seat and extending out of the hammer seat via a guide portion. The hammer hook is rotatable to push the hammer body in one direction. A first slot is provided on the side of the hammer seat, allowing a pull block of the hammer body to protrude and move. A first spring is installed within the hammer body, and the hammer hook is connected to a second spring. The hammer holder has a second slot on the top for the hammer hook to rotate, and a third slot for the upper guide plate to pass through and move. The hammer holder has a guide wedge on the side. When the push rod is in the ready position, the end portion of the upper guide plate protrudes from the third slot, the lower hook holds the pull block, and the hammer hook stretches the second spring and locks the hammer body. When the push rod moves from the ready position to the firing position, the lower hook moves the pull block, the hammer body moves to release the hammer hook, the side guide plate contacts the guide ramp and is subjected to a reaction force to move the coupling end downward, thereby releasing the pull block, the hammer body is rebounded by the first spring, which drives the ejector pin to open the magazine's exhaust valve and release high-pressure gas; after the push rod reaches the firing position, it returns to the ready position, the upper guide plate moves up to partially protrude from the third slot, and the lower hook locks the pull block to continuously allow the exhaust valve to release high-pressure gas; After the high-pressure gas supplied by the exhaust valve fires the air gun bullet, it continues to push a part of the linkage assembly backward, pressing the upper guide plate into the third slot and rotating the hammer hook to pull the hammer body. After the ejector pin releases the exhaust valve to stop releasing the high-pressure gas, the upper guide plate moves up to partially protrude from the third slot, and the lower hook once again holds the pull block. The air gun firing structure as described in claim 1, wherein the hammer body forms a guide surface perpendicular to the direction of movement, and a pair of trapezoidal guide plates are formed on the guide surface; the firing pin has a trapezoidal slider movable between the pair of trapezoidal guide plates, an impact portion is formed above the trapezoidal slider, a limiting block is formed at each end of the impact portion, and a hook portion is formed below it, the hook portion being connected to one end of a third spring. The other end of the third spring is fixed inside the hammer seat. When the magazine is inserted into the air gun, the periphery of the exhaust valve pushes the impact part upward, simultaneously stretching the third spring. When the lower latch moves the pull block, the impact part disengages from contacting the periphery of the exhaust valve and is pulled back by the restoring force of the third spring until the limit blocks are locked at the same end of the pair of trapezoidal guide plates. At this time, the impact part faces the exhaust valve. The air gun firing structure as described in claim 1, wherein a locking block extends from the pull block on the side of the hammer body, and a locking portion is formed at the end of the locking block. The air gun firing structure as described in claim 3, wherein the hammer hook forms a circular through hole, the circular through hole being rotatably connected to the interior of the hammer seat through an inserted pivot, a locking groove is formed on one side of the hammer hook, and an opening and a locking hook are formed on one side of the locking groove; when the linkage moves backward and the hammer hook is rotated through the guide, the hammer hook pushes the hammer body and causes the locking part to enter the locking groove through the opening, and when the hammer hook stops rotating, the locking hook engages the locking part. As described in claim 4, in the air gun firing mechanism, when the locking hook engages the locking part and the push rod moves from the ready-to-fire position to the firing position, the lower hook moves the pull block to move the hammer body, the locking hook disengages from the locking part, and the hammer hook is rotated and pulled back by the restoring force of the second spring until it stops because the movement of the guide part is restricted at one end of the second slot. The air gun firing structure as described in claim 1, wherein a sliding groove is formed on one side above the hammer seat. The air gun firing structure as described in claim 6, wherein the linkage assembly further comprises: a pressurized chamber, one end of which is fully open and the other end forming a circular opening, the lower end of which extends a gas bleed seat, the gas bleed seat being coupled to the sliding groove, the gas bleed seat forming a high-pressure air passage for guiding the high-pressure gas supplied by the gas outlet valve into a receiving space within the pressurized chamber; and a gas guide tube, one of which has a rubber fastener coupled to a cartridge case inside the air gun to guide the high-pressure gas in, and a sealing end being sealed to the pressurized chamber at the circular opening; A piston, installed in the accommodating space and in close contact with the inner wall of the pressure chamber, is movable outward from the accommodating space by the pressure of high-pressure gas; and a movable frame, the upper part of which is connected to the slide of the air gun, and a linkage seat is formed inside, the linkage seat extending and installed inside the piston, the linkage seat also moving when the piston is pushed by high-pressure gas, thereby moving the movable frame backward. The air gun firing structure as described in claim 7, wherein an annular groove is formed on the inner edge of the circular opening, and an O-ring is formed near the sealing end of the air tube, the O-ring being installed in the annular groove to ensure that the air tube and the air chamber are airtight. The air gun firing structure as described in claim 7, wherein a receiving groove is formed below the movable frame, and when the movable frame is not moved backward, the end portion of the upper guide plate protrudes from the third slot and extends into the receiving groove; when the movable frame moves backward, the upper guide plate leaves the receiving groove and is pressed down into the third slot below the movable frame. The air gun firing structure as described in claim 7, wherein the piston has an air inlet and an air outlet at one end facing the circular opening, the air inlet receiving high-pressure air from the pressure chamber into the piston, and the air outlet connecting to the opening at the sealed end of the air guide tube to guide the high-pressure air entering the piston into the air guide tube.