A firearm shooting training simulator and method of operation thereof

Abstract

This invention discloses a firearm shooting training simulator and its working method, which can provide shooters with near-realistic shooting training. It includes a receiver and a simulated barrel. The receiver houses a firing pin. The simulated barrel includes a simulated chamber tube, a circuit board tube, and a solenoid valve data cable tube. The simulated chamber tube contains a simulated cartridge, which includes a simulated cartridge case. A signal rod slides within the cavity of the simulated cartridge case. The circuit board tube contains a circuit board with a chip and a switch. A solenoid valve data cable is connected to the circuit board and is connected to a solenoid valve. The recoil simulator includes a rear end cover, a piston cylinder, and a front end cover. The rear end cover has an air inlet connector that communicates with the cavity of the piston cylinder. The air inlet connector is connected to a high-pressure gas cylinder via a solenoid valve. A lead-core piston slides within the piston cylinder. The lead-core piston includes a piston section and a piston rod. A piston return spring is fitted onto the piston rod. The piston section is driven by high-pressure gas.

Description

Technical Field

[0001] This invention relates to the field of firearms technology, and in particular to a firearms shooting training simulator and its working method. Background Technology

[0002] There are currently two methods for training marksmen with firearms. One is the traditional method, which uses real firearms for training. First, the marksman is trained to control the weapon, repeatedly aiming at a target and firing blanks. Only after the marksman is fully proficient do they proceed to live-fire training. Using real firearms for training not only poses safety risks but also involves cost issues. Training a novice to a skilled and excellent marksman requires a large amount of ammunition, especially for snipers, who consume even more ammunition, and sniper ammunition is expensive. Particularly when training snipers, the instructor cannot directly see the scene through the sniper's scope during the aiming and trigger-pulling process, which inevitably affects the effectiveness and prolongs training time. Furthermore, because there is no recoil or sound effect from firing live ammunition, blank firing and live-fire shooting are completely different concepts.

[0003] Another method is training with pain-themed training guns. Traditional methods of training shooters present safety and cost issues, leading to the development of pain-themed training guns. These guns resemble real firearms in appearance and operation, except they fire pain-themed bullets. These bullets are plastic pellets containing a dye liquid that bursts upon impact, staining the target. Besides combat training, they can also be used to train beginners. However, using pain-themed training guns for beginners has a drawback: their short range, typically around 30 meters, makes them unsuitable for long-range shooting training. They are primarily used for pistol and automatic rifle training, not for long-range sniper training. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a firearm shooting training simulator and its working method, which can provide shooters with near-real shooting training without live-fire shooting, allowing them to experience the feeling of real shooting.

[0005] The objective of this invention is achieved as follows:

[0006] A firearm shooting training simulator includes a receiver and a simulated barrel. A firing pin is housed within the receiver and is controlled by a trigger. The simulated barrel comprises a simulated chamber tube, a circuit board tube, and a solenoid valve data cable tube, connected sequentially from back to front. The simulated chamber tube is fixedly connected to the receiver, and a simulated cartridge is contained within the simulated chamber tube.

[0007] The simulated bullet includes a simulated cartridge case. A signal rod is slidably fitted inside the cavity of the simulated cartridge case. The signal rod has a front cylindrical boss and a rear cylindrical boss. A nut cap is threadedly fitted to the rear end of the simulated cartridge case. The nut cap has an axial hole that slidably engages with the rear end of the signal rod, allowing the firing pin to strike the rear end of the signal rod. The nut cap engages with the rear cylindrical boss of the signal rod to position the signal rod in its initial position. A signal rod return spring is fitted onto the signal rod. The rear end of the signal rod return spring is positioned at the rear cylindrical boss of the signal rod, and the front end of the signal rod return spring is positioned at a return spring action step provided inside the cavity of the simulated cartridge case. The reset spring action step surface is located behind the front cylindrical boss of the signal rod. A forced limiting step surface is also provided in the inner cavity of the simulated cartridge case. The forced limiting step surface is used to cooperate with the front cylindrical boss of the signal rod to limit the front limit position of the signal rod. A circuit board is provided inside the circuit board tube. The circuit board is provided with a chip and a switch. A solenoid valve data line is connected to the circuit board. The solenoid valve data line tube provides the solenoid valve data line. The solenoid valve data line is connected to the solenoid valve. When the signal rod is at the front limit position, the front end of the signal rod extends out of the inner cavity of the simulated cartridge case and activates the switch. The chip transmits the firing signal to the solenoid valve, and the solenoid valve opens.

[0008] The front end of the solenoid valve data cable is connected to the rear seat simulator. The rear seat simulator includes a rear end cover, a piston cylinder, and a front end cover arranged sequentially from back to front. The rear end cover is fixedly connected to the solenoid valve data cable. The rear end cover has a gas storage chamber. An air inlet connector is provided on one side of the gas storage chamber. The air inlet connector communicates with the inner cavity of the piston cylinder through the gas storage chamber. The air inlet connector is connected to a high-pressure gas tank through the solenoid valve. A lead-core piston is slidably fitted inside the piston cylinder. The lead-core piston includes a piston part and a piston rod. The piston part is driven by high-pressure gas. A piston return spring is sleeved on the piston rod. A circular boss is provided inside the front end cover. The rear end of the piston return spring is positioned at the piston part, and the front end of the piston return spring is positioned at the circular boss. Exhaust holes are provided on the walls of the piston cylinder and the front end cover, respectively. An inclined reflective wall is provided behind the exhaust hole of the piston cylinder. The reflective wall is used to cooperate with the high-pressure gas discharged from the exhaust hole to generate an auxiliary recoil force. The exhaust hole is located between the front limit position and the rear limit position of the piston part.

[0009] Preferably, the simulated chamber tube has a simulated chamber for positioning a simulated bullet. The simulated chamber and the simulated bullet have different dimensions from the real chamber and the real bullet. After the simulated bullet is loaded into the simulated chamber, the length of the simulated bullet protruding from the simulated chamber is less than the length of the real bullet protruding from the real chamber.

[0010] Preferably, the circuit board is connected to a simulated sight data cable, the simulated sight data cable is connected to a simulated sight, and the simulated sight is mounted on the receiver; the circuit board tube is provided with a connection socket for the simulated sight data cable, and the solenoid valve data cable tube is provided with a connection socket for the solenoid valve data cable.

[0011] Preferably, the simulated bullet sight has a sound system; after receiving a firing signal, the simulated bullet sight produces a simulated gunshot sound.

[0012] Preferably, it also includes a holographic helmet and a display, wherein the holographic helmet and the display are connected to a simulated aiming scope, and the holographic helmet and the display synchronously display a simulated aiming scene.

[0013] Preferably, the piston portion of the lead-core piston is provided with an annular groove, and the gas stored in the annular groove forms a vortex gas resistance, which slows down the leakage of high-pressure gas.

[0014] Preferably, the outlet end of the high-pressure gas tank is provided with a pressure reducing valve, which is used to regulate the output pressure.

[0015] Preferably, the piston cylinder has an impact buffer pad at the front end and a reset buffer pad at the rear end. The impact buffer pad and the reset buffer pad are used to prevent the lead core piston from undergoing rigid collisions.

[0016] Preferably, the switch is a Hall switch, and a magnet is provided at the front end of the signal rod. When the signal rod is in the front limit position, the magnet extends out of the inner cavity of the simulated cartridge case and activates the Hall switch.

[0017] A method for operating a firearms shooting training simulator.

[0018] Pulling the trigger causes the firing pin to strike the signal rod of the simulated bullet. After receiving the impact energy from the firing pin, the signal rod propels forward due to inertia until it is stopped by the forced limiting step surface on the inner cavity of the simulated cartridge case. At this point, the magnet on the head of the signal rod is at its closest distance to the Hall switch on the circuit board. The Hall switch is triggered by the magnet, and the circuit board sends a firing signal, which is transmitted to the simulated scope and solenoid valve via a data cable. Then, the signal rod returns to its initial position under the action of the signal rod return spring, and the magnet moves away from the Hall switch, completing one firing.

[0019] When the solenoid valve opens, high-pressure gas enters the gas storage chamber through the air inlet on the rear cover. The high-pressure gas pushes the lead-core piston forward. The air at the front of the piston part of the lead-core piston is discharged from the exhaust port of the piston cylinder and the exhaust port of the front cover, reducing the forward thrust resistance of the lead-core piston. As the lead-core piston thrusts forward, the rear-seat simulator experiences a recoil due to the relative motion, resulting in a recoil sensation. When the lead-core piston reaches its forward thrust position, it passes the exhaust port of the piston cylinder. The high-pressure gas behind the piston is discharged from the exhaust port of the piston cylinder, simultaneously exerting a backward force on the reflector wall, forming a superimposed recoil force. After the lead-core piston reaches its forward thrust position, it moves backward under the action of the piston return spring, returning to the initial position, completing one firing cycle.

[0020] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0021] This invention can be used to train shooters and in civilian shooting recreational venues, allowing shooting enthusiasts to experience the feeling of realistic shooting. The operation is consistent with real firearms; even without live ammunition, it provides the same gunshot sound and recoil sensation as a real firearm, creating a strong sense of realism. During shooting, the shooter's target acquisition and aiming are simultaneously displayed on the holographic helmet and observer monitor, facilitating targeted training and improving training effectiveness. Because it does not use live ammunition, it saves costs and reduces safety risks. The technical principles of this invention can be applied to various firearms, making it widely applicable and possessing significant promotional and practical value. Its widespread application will generate substantial economic and social benefits. Attached Figure Description

[0022] Figure 1 A global view of the shooting training simulator;

[0023] Figure 2 The firing pin and the simulated bullet signal lever are positioned in the ready-to-fire state.

[0024] Figure 3 This indicates the signal rod has moved forward to its designated position after the firing pin strikes.

[0025] Figure 4 To simulate the shape of a bullet;

[0026] Figure 5 This is a simulated cross-sectional view of a bullet;

[0027] Figure 6 To simulate the forward movement of the signal rod after a bullet is struck by the firing pin;

[0028] Figure 7 To simulate a gun barrel;

[0029] Figure 8 To simulate the connection between the chamber tube and the receiver;

[0030] Figure 9 A comparison of the lengths of simulated bullets and real bullets protruding from the breech of a gun;

[0031] Figure 10 This describes the state of the circuit board being installed inside the circuit board tube.

[0032] Figure 11 A global graph showing the initial state of the rear-seat simulator;

[0033] Figure 12 This is the state where the lead-core piston is in high-speed forward thrust and has reached its destination.

[0034] Figure 13 Lead-core piston;

[0035] Figure 14 It serves as the reflector wall and exhaust port for the piston cylinder. Detailed Implementation

[0036] The invention will now be described with reference to the accompanying drawings. Figure 1 This is a global diagram of a shooting training simulator: 1-stock, 2-bolt, 3-magazine, 4-simulated ammunition, 5-bipod, 6-recoil simulator, 7-simulated barrel, 8-gun body, 9-simulated scope.

[0037] Appendix Figure 2 The diagram shows the firing pin and simulated cartridge signal rod positions in the ready-to-fire state: 1-Receiver (mounted on the gun body), 2-Firing pin, 3-Signal rod, 4-Signal rod return spring, 5-Magnet, 6-Hall switch, 7-Circuit board tube, 8-Burning chamber tube, 9-Simulated cartridge case. In the diagram, the firing pin 1 on the bolt is in the ready-to-fire state, the simulated cartridge signal rod 3 is in the initial position, and the magnet 5 on the head of the signal rod is approximately 11 mm away from the Hall switch 6 on the circuit board.

[0038] Appendix Figure 3 After the firing pin strikes, the signal rod is in its forward-moving position. Pulling the trigger causes the firing pin 1 to strike the signal rod 2 of the simulated bullet. The signal rod, absorbing the impact energy, propels forward until it is stopped by a forced-stop step on the inner cavity of the simulated cartridge case 3. At this point, the magnet 4 on the signal rod head approaches the Hall switch 5 on the circuit board (approximately 1 mm away). The Hall switch is triggered by the magnet, and the circuit board sends a firing signal, which is transmitted via data cable to the simulated scope and solenoid valve. The signal rod then returns to its initial position under the action of the signal rod return spring, and the magnet moves away from the Hall switch, completing one firing cycle.

[0039] Hall effect switches can also be replaced by mechanical tactile switches, push-button switches / Touchpads, proximity switches, etc. The principle of a Hall effect switch is the Hall effect, where an electric current in a metal or semiconductor wafer creates a potential difference. Ordinary proximity switches utilize the sensitivity of a displacement sensor to nearby objects to control the switch's on / off state. Touchpads can be divided into four main categories: resistive, capacitive, surface acoustic wave (SAW) sensing, and infrared sensing. Tactile switches and push-button switches operate similarly, but their travel distances differ. Push-button switches have a longer travel distance than tactile switches. A light touch indicates the amount of force required to operate the switch; a small amount of force is sufficient to change the state of the switch contacts. Once the force is released, the switch retains its original state. Push-button switches have a built-in lock, allowing them to remain continuously on or off, using a mechanical mechanism to lock the circuit's continuity.

[0040] Appendix Figure 4 This is a diagram simulating the shape of a bullet.

[0041] Figure 5 This is a cross-sectional view of a simulated bullet. 1-Nut cap, 2-Signal rod, 3-Simulated cartridge case, 4-Signal rod return spring, 5-Magnet. The nut cap 1 is a rotating body with a threaded outer cylindrical surface that connects to the simulated cartridge case 3, used to position the signal rod 2 at its initial position. The signal rod 2 is a rod-shaped rotating body with two cylindrical bosses. The front cylindrical boss is used to forcibly limit the signal rod's forward momentum after being struck by the firing pin, preventing it from directly impacting the Hall switch on the circuit board. The rear cylindrical boss contacts the nut cap 1 to position the signal rod at its initial position. The front end of the signal rod has an inner hole for mounting the magnet 5. The simulated cartridge case 3 has a forced limiting step surface in its inner cavity. This limiting surface withstands the impact of the cylindrical boss at the front end of the signal rod, so that the signal rod approaches the Hall switch on the circuit board without impacting it when it moves forward. The simulated cartridge case has an annular groove for the extractor on the bolt to hold the cartridge and grip the case. Its shape is similar to that of a real bullet. The simulated cartridge case 3 is generally four cones in shape. Its dimensions differ from those of a real bullet, yet it can smoothly push the bullet from the magazine into the chamber, completing a reliable feeding process. The signal rod reset spring 4 is fitted onto the signal rod 2. One end contacts the cylindrical boss at the rear end of the signal rod, and the other end contacts the reset spring action step surface inside the simulated cartridge case 3. Its function is to allow the signal rod 2 to reset quickly. The magnet 5 is located in the inner hole at the head of the signal rod 2 and is used to trigger the Hall switch on the circuit board.

[0042] Appendix Figure 6 This is to simulate the signal pole moving forward to its position after a bullet is struck by the firing pin.

[0043] Appendix Figure 7This is a simulated gun barrel, used to replace a real gun barrel, and combined with the receiver on the gun body to form the gun body. 1-Simulated chamber barrel, 2-Circuit board tube, 3-Solenoid valve data cable tube. The simulated chamber barrel 1 is a tubular body with the same outer diameter as a real gun barrel, and has threads at the rear end for connection to the receiver of the gun body (e.g., Figure 8 The front end is threaded to connect to the circuit board tube 2. The inner hole is a simulated chamber used to position the simulated bullet. The shape of the simulated chamber is similar to that of a real chamber, consisting of three conical holes, but the size differs from that of a real chamber. After a real bullet is loaded into the simulated chamber, the positioning is unreliable, and it will wobble and shake. At the same time, the size of the bullet protruding from the rear of the chamber is much larger than the size of the simulated bullet protruding from the simulated chamber (e.g., ...). Figure 9 The top image shows a simulated bullet being loaded into a simulated chamber, while the bottom image shows a real bullet being loaded into a simulated chamber. The real bullet protrudes significantly beyond the barrel end (the length of the real bullet protruding beyond the barrel end is much greater than that of the simulated bullet), preventing the bolt from returning to its original position and thus hindering locking and firing actions. This avoids the potential hazards caused by mixing real and simulated bullets. Circuit board tube 2 is a tubular body with the same outer diameter as the real barrel. Its tail end is threaded to connect to the simulated chamber tube 1, and its front end is threaded to connect to the solenoid valve data cable tube 3. The inner hole is used for mounting the circuit board and data cable routing. A connection socket for the simulated scope data cable is located next to the middle section. The simulated scope data cable on the circuit board connects to the socket, and then through the socket and data cable, connects to the simulated scope, transmitting the firing pin strike signal to the simulated scope. The solenoid valve data cable on the circuit board enters the inner hole of the solenoid valve data cable tube from the front end of the circuit board tube, and then connects to the solenoid valve connection socket, transmitting the firing pin strike signal to the solenoid valve. The circuit board is shaped like an elongated disc, with the disc inverted and placed at the end of the inner hole of the circuit board tube. The Hall switch faces backward. Figure 10 The solenoid valve data cable tube 3 is fixed to the circuit board tube 2 with screws. The outer diameter of the solenoid valve data cable tube 3 is the same as that of a real gun barrel. It is used for routing the solenoid valve data cable. The tail end of the solenoid valve data cable tube 3 is threaded to connect to the circuit board tube 2, and the front end is threaded to connect to the recoil simulator. A socket for the solenoid valve data cable is located on the side of the middle section. The solenoid valve data cable on the circuit board connects to the socket, and then through the socket and data cable, it connects to the solenoid valve, transmitting the firing pin strike signal to the solenoid valve. The solenoid valve data cable tube has a row of holes to distinguish it from a real firearm.

[0044] Appendix Figure 8 To simulate the connection between the chamber tube and the receiver.

[0045] Appendix Figure 9 A comparison of the lengths of simulated bullets and real bullets protruding from the barrel.

[0046] Appendix Figure 10 This indicates the state in which the circuit board is installed inside the circuit board tube.

[0047] Appendix Figure 11This is a global view of the initial state of the recoil simulator. 1-Intake rear end cover, 2-Intake connector, 3-Reset buffer pad, 4-Lead piston, 5-Piston cylinder, 6-Piston return spring, 7-Impact buffer pad, 8-Front end cover. Pulling the trigger fires the simulated bullet, triggering the Hall effect switch on the circuit board. The circuit board transmits the firing signal to the solenoid valve, which opens, allowing high-pressure air to enter the gas storage chamber through the intake connector 2 on the rear end cover 1. The high-pressure gas pushes the lead piston 4 forward. Air at the piston's front end is discharged through the exhaust port of the piston cylinder 5 and the exhaust port of the front end cover 8, reducing the resistance to the lead piston's forward movement. The lead piston moves forward at high speed, and the recoil simulator generates recoil due to the relative motion, giving the shooter a feeling of recoil. The piston section of the lead-core piston has several annular grooves. These grooves store gas and create vortex gas resistance. Through these layers of obstruction, the leakage of high-pressure gas at the rear end is reduced. When the lead-core piston 4 reaches its forward position, it impacts the impact buffer pad 7, avoiding a rigid collision. At this point, the piston passes the exhaust port of the piston cylinder 5 (e.g., Figure 12 The high-pressure gas behind the piston is discharged from the exhaust port of the piston cylinder 5, which at the same time exerts a backward force on the reflector wall, forming a superimposed recoil force. After the lead-core piston moves forward to its position, it moves backward under the action of the piston return spring 6, hits the return buffer pad 3, and returns to the initial position, completing one firing cycle.

[0048] Appendix Figure 12 This is the state where the lead-core piston is in high-speed forward thrust.

[0049] Appendix Figure 13 It is a lead-core piston.

[0050] Appendix Figure 14 The piston cylinder features a reflector wall and exhaust ports. The piston cylinder has multiple forward-leaning exhaust ports arranged in a circular array around its axis. These ports discharge air from the front end of the piston within the piston cylinder cavity during piston thrust, reducing resistance during this forward movement. Simultaneously, after the piston has passed the exhaust ports and reached its final position, the high-pressure gas at the rear end of the piston is discharged from the exhaust ports, reducing resistance during piston return spring operation. A reflector wall is also installed around the exhaust ports on the piston cylinder. This reflector wall is annular in shape with a right-angled triangular cross-section, with the right-angled side in front and the hypotenuse side behind. The forward-leaning exhaust ports pass through the right-angled side of the reflector wall, forming a reflective wall. When the high-pressure gas is discharged from the forward-leaning exhaust ports, it acts on the reflector wall, generating an auxiliary recoil force.

[0051] Specifically:

[0052] See Figures 1-14This is an embodiment of a firearm shooting training simulator, including a stock, bolt, magazine, bipod, safety, receiver, simulated ammunition, simulated scope, and recoil simulator. The stock, bolt, magazine, bipod, and safety directly borrow parts from real firearms. Except for the barrel, which is replaced by a simulated barrel, the receiver, magazine well, and other components also directly borrow parts from real firearms to ensure similarity in appearance and operation.

[0053] The magazine contains simulated ammunition, and a magnet is installed at the front end of the signal rod of the simulated ammunition. A simulated gun barrel replaces the real gun barrel, and a circuit board is installed at the rear end of the simulated gun barrel. The circuit board has Hall switches, chips, data cables, etc. The simulated sight data cable connects the simulated sight to the circuit board and transmits the firing signal to the chip on the simulated sight. The solenoid valve data cable connects the solenoid valve to the circuit board and transmits the firing signal to the solenoid valve. After receiving the signal, the solenoid valve opens the gas circuit, and high-pressure gas enters the recoil simulator to generate recoil.

[0054] Similar to operating a real firearm, the bolt propels the simulated cartridge from the magazine into the simulated chamber of the simulated barrel, and the bolt locks. The shooter puts on the holographic helmet, rests their cheek against the buttstock, locates the target, adjusts the magnification and clarity of the simulated scope, and aims at the target (the real-time scene of finding and aiming at the target is simultaneously displayed on the shooter's holographic helmet and a monitor next to the shooter, allowing the training instructor to observe and correct in a timely manner). Holding their breath, the shooter pulls the trigger on the receiver, and the firing pin strikes the signal rod on the simulated cartridge. A magnet is located at the front of the signal rod. After receiving the energy from the firing pin, the signal rod moves forward due to inertia, and the magnet at the front of the signal rod approaches and... The Hall effect switch on the trigger circuit board transmits a firing pin strike signal to the simulated bullet sight and the solenoid valve. The strike signal is then transmitted to the chip on the simulated bullet sight, which sends a signal to the speaker. The speaker then produces a simulated gunshot. If the shooter accurately aims at the target and there is no recoil during the firing process, the chip also sends a signal indicating that the target has been hit. The holographic helmet and display show the target falling. Conversely, if the shooter does not accurately aim at the target or misses the target due to recoil or other factors (called a miss), the target does not fall. After firing, the point of impact is displayed on the holographic helmet glasses and the display next to the shooter, allowing the shooter to fine-tune the firing of the next shot. While the firing signal is transmitted to the simulated bullet sight, the circuit board also transmits the firing signal to the solenoid valve. The solenoid valve opens the gas path, and high-pressure gas enters the simulated buffer, pushing the piston forward at high speed. This causes the entire firearm to move relative to the target, generating recoil. At the moment the piston reaches its forward position, the high-pressure gas is discharged from the exhaust port on the piston cylinder. Because the exhaust port is tilted forward, it has an angle of less than 90° with the piston cylinder axis. The discharged high-pressure gas acts on the reflector wall of the piston cylinder, applying a backward force to the recoil simulator. The firearm generates recoil during relative motion and simultaneously receives a superimposed recoil force, enhancing the overall recoil of the firearm and giving the shooter a more realistic recoil feeling after pulling the trigger.

[0055] The simulated chamber on the simulated gun barrel differs significantly in size from that of a real gun barrel. After the simulated bullet is positioned in the simulated chamber, the distance from the tail of the simulated bullet to the tail of the simulated gun barrel is much greater than the distance from the tail of a real bullet to the tail of the gun barrel. When a real bullet enters the simulated gun barrel chamber, the bolt cannot return to its original position, nor can it complete the locking action. This completely eliminates the safety hazards caused by mixing real bullets.

[0056] After the signal rod of the simulated bullet moves forward to its designated position due to inertia, it is reset by the signal rod return spring, moving away from the Hall switch on the circuit board. As the bolt moves backward, the simulated bullet is extracted from the simulated barrel and ejected, completing the extraction and ejection actions of a real firearm. The bolt's return pushes the simulated bullet in the magazine into the simulated chamber of the simulated barrel, initiating the next firing cycle.

[0057] After the piston of the rear-seat simulator reaches its forward position, it is reset by the piston return spring, returning to the initial position and entering the next firing cycle.

[0058] The simulated cartridge's function is to trigger a Hall effect switch on the circuit board after being struck by the firing pin. The simulated cartridge consists of a nut cap, a simulated cartridge case, a signal rod return spring, a signal rod, and a magnet. The signal rod is a rod-shaped rotating body with two cylindrical bosses. The front cylindrical boss is used to forcibly limit the signal rod's forward momentum after being struck by the firing pin, preventing it from directly impacting the Hall effect switch on the circuit board. The rear cylindrical boss is used to position the signal rod at its initial position. The front end of the signal rod has an inner hole for mounting the magnet. The simulated cartridge case has a forced limiting surface inside its cavity. This limiting surface withstands the impact of the front cylindrical boss of the signal rod, ensuring that the signal rod approaches the Hall effect switch on the circuit board without impacting it during its forward momentum. The simulated cartridge case has an annular groove for the extractor on the bolt to hold and grip the cartridge case. Its shape is similar to a real bullet, with the simulated cartridge case having four conical shapes that fit and position with the simulated barrel and chamber. While its dimensions differ from real bullets, it allows for smooth feeding of the cartridge from the magazine into the chamber, ensuring reliable ammunition supply. The signal rod reset spring is sleeved on the signal rod, with one end contacting the cylindrical boss at the rear end of the signal rod and the other end contacting the working surface of the reset spring inside the simulated cartridge case. Its function is to allow the signal rod to reset quickly. The nut cap is installed at the rear end of the simulated cartridge case to position the signal rod in its initial position. The nut cap is threadedly connected to the simulated cartridge case. The magnet is located in the inner hole at the head of the signal rod to trigger the Hall switch on the circuit board.

[0059] The simulated barrel is used to replace the real barrel and connects to the receiver on the gun body. The simulated barrel consists of three sections: a simulated chamber tube, a circuit board tube, and a solenoid valve data cable tube. The simulated chamber tube is tubular with the same outer diameter as the real barrel. It has threads at the rear end to connect to the receiver on the gun body, and threads at the front end to connect to the circuit board tube. The inner hole is the simulated chamber, used to position the simulated cartridge. The shape of the simulated chamber is similar to that of the real chamber, consisting of three conical holes, but the size differs from that of the real chamber. When a real cartridge is loaded into the simulated chamber, the positioning is unreliable, causing it to wobble and shake. At the same time, the size of the cartridge protruding from the rear end of the chamber is much larger than the size of the simulated cartridge protruding from the simulated chamber, preventing the bolt from returning to its original position and thus preventing it from locking. The circuit board tube is a tubular body with the same outer diameter as a real gun barrel. Its rear end is threaded to connect to the simulated chamber tube, and its front end is threaded to connect to the solenoid valve data cable tube. A circular inner hole is used for mounting the circuit board and data cable routing. A socket hole for the simulated scope data cable is located on the side of the middle section. The simulated scope data cable on the circuit board connects to the socket, and then through the socket and data cable, connects to the simulated scope, transmitting the firing pin strike signal to the simulated scope. The solenoid valve data cable on the circuit board enters the inner hole of the solenoid valve data cable tube from the front end of the circuit board tube, and then connects to the solenoid valve, transmitting the firing pin strike signal to the solenoid valve. The circuit board is a disc-shaped, elongated strip, with the disc inverted at the rear end of the circuit board tube's inner hole. The Hall effect switch faces rearward and is fixed to the circuit board tube with screws. The solenoid valve data cable is a tubular structure with the same outer diameter as a real gun barrel. It is used for routing the solenoid valve data cable. The tail end has a threaded connection to the circuit board tube, and the front end has a threaded connection to the recoil simulator. A socket hole for the solenoid valve data cable is located in the middle. The solenoid valve data cable on the circuit board connects to the socket, and then through the socket and data cable, it connects to the solenoid valve, transmitting the firing pin strike signal to the solenoid valve. The solenoid valve data cable tube has a row of holes to distinguish it from a real firearm.

[0060] The recoil simulator is connected to the simulated gun barrel and its function is to generate recoil force. Gas from the high-pressure gas tank enters the solenoid valve through the pressure reducing valve, and then enters the recoil simulator. The gas pressure of the pressure reducing valve can be adjusted as needed. The recoil simulator consists of a front cover, a piston return spring, a piston cylinder, an air inlet rear cover, a lead-core piston, a return buffer pad, an impact buffer pad, and an air inlet connector. The front cover is a rotating body with an annular boss in its inner cavity, which mates with the slender piston rod, acting as an auxiliary guide rail to guide the piston and also serving as the mounting surface for one end of the piston return spring. The front cover has several vent holes to expel air from the inner cavity when the piston moves forward, reducing resistance during the piston's forward movement. The rear end of the front cover is threaded to mate with the piston cylinder, achieving connection. The front cover also has an annular groove for installing the impact buffer pad to prevent rigid collisions during the piston's forward movement. The piston cylinder is a cylindrical rotating body that houses the piston, and its circular inner cavity also serves as a guide rail for piston movement. The front end of the piston cylinder is threaded to connect with the front cover. The piston cylinder has multiple forward-sloping exhaust ports near the front end cover. These ports are arranged in a circular array around the axis to expel air from the front end of the piston within the piston cylinder cavity during piston thrust, reducing resistance during the piston's forward movement. Simultaneously, after the piston has thrust past the exhaust ports and reached its destination, the high-pressure gas at the rear end of the piston is discharged from the exhaust ports, reducing resistance during piston return spring repositioning. A reflective wall is also installed around the exhaust ports of the piston cylinder. This reflective wall is annular with a right-angled triangular cross-section, with the right-angled side in front and the hypotenuse side behind. The forward-sloping exhaust ports pass through the right-angled side of the reflective wall, forming a reflective barrier. When the high-pressure gas is discharged from the forward-sloping exhaust ports, it acts on the reflective barrier, generating an auxiliary recoil force. The rear end of the piston cylinder has threads for connection to the intake rear end cover and an annular groove for installing a return buffer pad to prevent rigid impact during piston return spring repositioning. The lead-core piston is a two-section rotating body. The thicker end is the piston, which is shorter and filled with lead to increase its weight. The thinner end is the piston rod, a long, slender cylinder used to mount the piston return spring. The piston section has a clearance fit with the piston cylinder. The piston section has several annular grooves, which store gas during the high-speed forward motion of the lead-core piston, forming a vortex of gas resistance. This layered resistance slows down the leakage of high-pressure gas at the rear end. The air intake rear end cover is a rotating body with a threaded front end that connects to the piston cylinder. It contains two non-communicating rotating cavities. The front cavity is a gas storage cavity for rapid start-up during the piston's forward motion. The rear cavity is threaded for connection to the simulated gun barrel. A threaded hole in the middle of the air intake rear end cover is used to install an air intake connector, which communicates with the front cavity. The piston return spring is a cylindrical helical spring used to return the lead-core piston to its initial position after the lead-core piston completes its forward impact. The return spring is sleeved on the piston rod of the lead-core piston, with one end acting on the front end cover and the other end acting on the boundary step surface between the piston and the piston rod of the lead-core piston.The reset buffer pad and impact buffer pad are disc-shaped and located at the front and rear ends of the piston cylinder, respectively, to avoid rigid collisions when the piston is in the forward thrust position and in the reset position.

[0061] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A gun shooting training simulator, comprising a magazine, a simulated barrel, a firing pin is arranged in the magazine, the firing pin is controlled by a trigger, characterized in that: The simulated gun barrel includes a simulated chamber tube, a circuit board tube, and a solenoid valve data cable tube connected sequentially from back to front. The simulated chamber tube is fixedly connected to the receiver, and a simulated bullet is contained inside the simulated chamber tube. The simulated bullet includes a simulated cartridge case. A signal rod is slidably fitted inside the cavity of the simulated cartridge case. The signal rod has a front cylindrical boss and a rear cylindrical boss. A nut cap is threadedly fitted to the rear end of the simulated cartridge case. The nut cap has an axial hole that slidably engages with the rear end of the signal rod, allowing the firing pin to strike the rear end of the signal rod. The nut cap engages with the rear cylindrical boss of the signal rod to position the signal rod in its initial position. A signal rod return spring is fitted onto the signal rod. The rear end of the signal rod return spring is positioned at the rear cylindrical boss of the signal rod, and the front end of the signal rod return spring is positioned at a return spring action step provided inside the cavity of the simulated cartridge case. The reset spring action step surface is located behind the front cylindrical boss of the signal rod. A forced limiting step surface is also provided in the inner cavity of the simulated cartridge case. The forced limiting step surface is used to cooperate with the front cylindrical boss of the signal rod to limit the front limit position of the signal rod. A circuit board is provided inside the circuit board tube. The circuit board is provided with a chip and a switch. A solenoid valve data line is connected to the circuit board. The solenoid valve data line tube provides the solenoid valve data line. The solenoid valve data line is connected to the solenoid valve. When the signal rod is at the front limit position, the front end of the signal rod extends out of the inner cavity of the simulated cartridge case and activates the switch. The chip transmits the firing signal to the solenoid valve, and the solenoid valve opens. The front end of the solenoid valve data cable is connected to the rear seat simulator. The rear seat simulator includes a rear end cover, a piston cylinder, and a front end cover arranged sequentially from back to front. The rear end cover is fixedly connected to the solenoid valve data cable. The rear end cover has a gas storage chamber, and an air inlet connector is provided on one side of the gas storage chamber. The air inlet connector communicates with the inner cavity of the piston cylinder through the gas storage chamber. The air inlet connector is connected to a high-pressure gas tank through a solenoid valve. A lead-core piston is slidably fitted inside the piston cylinder. The lead-core piston includes a piston part and a piston rod. The rear end cover and the front end cover define the piston part. The piston rod is fitted with a piston return spring at the front end and the rear end. A circular boss is provided inside the front end cover. The rear end of the piston return spring is positioned at the piston part, and the front end of the piston return spring is positioned at the circular boss. The piston rod passes through the circular boss. The piston cylinder and the front end cover are respectively provided with exhaust holes. A reflective wall is inclinedly provided on the rear side of the exhaust hole on the piston cylinder. The reflective wall is used to cooperate with the gas discharged from the exhaust hole on the piston cylinder to generate an auxiliary recoil force. The exhaust hole on the piston cylinder is located between the front end and the rear end of the piston part. The piston cylinder is provided with an impact buffer pad at the front end and a reset buffer pad at the rear end. The impact buffer pad and the reset buffer pad are used to prevent the lead core piston from undergoing rigid collision.

2. A firearm shooting training simulator according to claim 1, characterized in that: The simulated chamber tube has a simulated chamber, which is used to position the simulated bullet. The specifications and dimensions of the simulated chamber and the simulated bullet are different from those of the real chamber and the real bullet. After the simulated bullet is loaded into the simulated chamber, the length of the simulated bullet protruding from the simulated chamber is less than the length of the real bullet protruding from the real chamber.

3. A firearm shooting training simulator according to claim 1, wherein: The circuit board is connected to a simulated sight data cable, which is connected to a simulated sight. The simulated sight is mounted on the receiver. The circuit board tube is provided with a connection socket for the simulated sight data cable, and the solenoid valve data cable tube is provided with a connection socket for the solenoid valve data cable.

4. A firearm shooting training simulator according to claim 3, characterized in that: The simulated bullet sight has a sound system; when the simulated bullet sight receives a firing signal, the sound system produces a simulated gunshot.

5. A firearm shooting training simulator according to claim 4, characterized in that: It also includes a holographic helmet and a display, which are connected to a simulated aiming scope and synchronously display a simulated aiming scene.

6. A firearm shooting training simulator according to claim 1, wherein: The piston portion of the lead-core piston is provided with an annular groove. The gas stored in the annular groove forms a vortex gas resistance, which slows down the leakage of high-pressure gas.

7. A firearm shooting training simulator according to claim 1, wherein: The outlet end of the high-pressure gas tank is equipped with a pressure reducing valve, which is used to regulate the output pressure.

8. A firearm shooting training simulator according to claim 1, wherein: The switch is a Hall switch, and a magnet is provided at the front end of the signal rod. When the signal rod is in the front limit position, the magnet extends out of the cavity of the simulated cartridge case and activates the Hall switch.

9. A method for operating a firearm shooting training simulator as described in claim 1, characterized in that: Pulling the trigger causes the firing pin to strike the signal rod of the simulated bullet. After receiving the impact energy from the firing pin, the signal rod propels forward due to inertia until it is stopped by the forced limiting step surface on the inner cavity of the simulated cartridge case. At this point, the magnet on the head of the signal rod is at its closest distance to the Hall switch on the circuit board. The Hall switch is triggered by the magnet, and the circuit board sends a firing signal, which is transmitted to the simulated scope and solenoid valve via a data cable. Then, the signal rod returns to its initial position under the action of the signal rod return spring, and the magnet moves away from the Hall switch, completing one firing. When the solenoid valve opens, high-pressure gas enters the gas storage chamber through the air inlet on the rear cover. The high-pressure gas pushes the lead-core piston forward. The air at the front of the piston part of the lead-core piston is discharged from the exhaust port of the piston cylinder and the exhaust port of the front cover, reducing the forward thrust resistance of the lead-core piston. As the lead-core piston thrusts forward, the rear-seat simulator experiences a recoil due to the relative motion, resulting in a recoil sensation. When the lead-core piston reaches its forward thrust position, it passes the exhaust port of the piston cylinder. The high-pressure gas behind the piston is discharged from the exhaust port of the piston cylinder, simultaneously exerting a backward force on the reflector wall, forming a superimposed recoil force. After the lead-core piston reaches its forward thrust position, it moves backward under the action of the piston return spring, returning to the initial position, completing one firing cycle.

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