TW202108965A - Cycling shooting mechanism of simple blowback weapon - Google Patents

Abstract

A cycling shooting mechanism of simple blowback weapon is disclosed, wherein the main components of the shooting mechanism are in the same axial motion, thereby the simple blowback weapon is specialized for medium and low pressure ammunition.

Description

Recoil type automatic weapon circulation shooting mechanism

The invention relates to a continuous shooting mechanism of an automatic weapon, in particular to a recoil type automatic weapon cyclic shooting mechanism.

A conventional automatic firing weapon, such as the ROC Announcement No. I585359 "Continuous firing barrel rear seat automatic weapon cyclic shooting mechanism" invention patent previously obtained by the applicant, which discloses the use of full-power rifle bullets or intermediate-power rifle bullets The continuous firing mechanism of the high-pressure automatic weapon. Please refer to Figure 1. The mechanism includes five main assemblies: the gun body 10, the barrel unit, the gun unit, the firing needle unit, and the recoil spring seat unit. Among them, the barrel set includes a barrel 11 and a barrel sleeve 111, the gun set includes a bolt 13, a bolt 14, a bolt spring 133 and a cam pin 131, and the firing pin set includes a firing pin 142 and A hitting pin plunger 132, the recoil spring seat group includes a recoil spring seat 15 and a recoil spring 151.

The steps of the conventional mechanism in a single cycle operation are: when the ammunition is fired, the instant high-pressure gas generated by the propellant pushes the warhead forward and at the same time pushes the bolt 14 backwards. At this time, the barrel sleeve 111 of the barrel group and the gun of the gun unit are pushed forward. The latch 14 is in a locked and combined state, so the two are seated together, while compressing the barrel spring 12 to store energy.

The bolt 13 still stays in place due to its mass inertia and the support force of the reentry spring seat assembly. The bolt action spring 133 of the gun unit is therefore squeezed by the barrel assembly and the rear seat of the bolt 14, which bears and consumes the gun on the one hand. The tube 11 recoils, on the other hand, stores energy.

When the bolt spring 133 is compressed to the limit with the recoil force of the barrel 11, it starts to rebound. The energy released pushes the bolt 13 and the recoil spring seat assembly to retreat. When the bolt 13 retreats, it is fixed to the cam pin of the bolt 13 131 is also backward. Under the curvilinear stroke limit of the cam groove 141 of the breech block 14, the bolt 14 is driven by the bolt 14 to rotate and is separated from the barrel cover 111 (opening the bolt). After the barrel 11 is retracted to the limit position, Due to the release of the spring force of the barrel spring 12, it starts to return to its position. The bolt action 13 and the bolt 14 continue to pull the cartridge case backwards. When the cartridge case is separated from the barrel sleeve 111, the ejector is under the action of the ejector spring, and the cartridge case is thrown away from the gun body 10 to complete the ejection and ejection actions.

When the return spring seat 15 of the return spring seat assembly retreats and hits the bottom of the gun body 10, the seat is in place after the automatic cycle is completed. At this time, the return spring 151 begins to rebound and release energy to push the gun unit, firing needle assembly and the return spring The seat assembly moves forward and backward, and the push teeth of the bolt 14 will push the secondary bullet forward into the chamber to complete the automatic cycle of push and advance actions. Finally, the bolt 14 enters the barrel sleeve 111 to resist the gun. At the end of the tube 11, the bolt 13 continues to push the breech block 14, limited by the stroke of the cam groove 141 of the breech block 14, the breech block 14 is squeezed and rotated and combined with the barrel sleeve 111 to complete the automatic loop locking action.

At this time, the firing pin 142 of the firing pin group naturally protrudes due to the rotation of the bolt 14 and is resisted by the firing pin 132 combined with the reentry spring seat 15. The impact force is interrupted by the impact of the machine 13 re-entry and the impact of the bolt spring 133. After firing the second round of ammunition, it enters the retreat, ejection, rear seat, re-entry, push and advance, lock and firing of automatic weapons. The action cycle, to achieve the purpose of automatic continuous shooting.

Since the automatic weapon of the conventional technology is a barrel rear-seat weapon, the ammunition used is a high-powered ammunition with a high chamber pressure. The recoil force generated when the propellant is ignited by the bottom fire of the ammunition is extremely high. The high-pressure recoil force provides the power when the barrel is recoiled. This power can drive the gun unit and the recoil spring seat assembly to move repeatedly to achieve the purpose of automatic circulation and continuous shooting, but in order to reduce the vibration generated by the barrel recoil force and to delay the opening Barrel and transfer barrel recoil energy. A barrel spring 12 is set between barrel 11 and barrel 10. All guns except barrel 11 and barrel 14 must be able to lock the rear seat and move a short free stroke compression gun at the moment of firing. Outside the machine spring 133, the other parts such as the bolt machine 13 stay in place by inertial force.

When the propellant is generated, the high-pressure gas pushes the warhead forward. Due to the extremely high chamber pressure, the barrel sleeve 111 at the end of the barrel 11 must be in a locked state with the bolt 14 of the gun unit. Together, the rear seat compresses the barrel spring. 133 stores energy. When the bolt spring 133 is compressed to the limit with the barrel recoil force, it starts to rebound. The energy released pushes the bolt 13 and the recoil spring seat assembly to retreat. When the bolt 13 retreats, it is fixed to the cam pin 131 of the bolt 13 Also backward, under the limit of the cam groove 141 of the breech block 14, the bolt 14 is driven by the bolt 14 to rotate and the bolt is separated from the barrel cover 111. After the barrel 11 is retracted to the extreme position, the bolt is caused by the spring 12 of the barrel. The spring force begins to return to position. Only when this kind of mechanism is used in a low-pressure recoil weapon, it will not be able to effectively transmit the recoil energy due to the low chamber pressure, and it will not be able to fire continuously.

Furthermore, various recoil type automatic weapons currently in service, such as bolts, recoil springs and other recoil energy transmission components, generally cannot move in a single coaxial direction, and usually produce non-coaxial force rotation moments during movement. , Which increases the vibration of the gun and reduces the accuracy of shooting.

In addition, the conventional structure has the barrel spring 12, the latch structure of the barrel 14 and the barrel cover 111, as well as the firing pin 142 and the firing pin 132. The number of parts is large, the assembly is more complicated, and the chamber pressure is relatively high. , The parts that withstand high chamber pressure and high recoil must be thicker, so the overall weapon weight is heavier.

The purpose of the present invention is to provide a recoil type automatic weapon cyclic firing mechanism, which can smoothly transmit the rear seat force generated by the middle and low chamber pressure, so that the back seat of the bolt is in place, and the number of mechanical parts is reduced, so that the size and weight of the parts do not need to be too thick. This reduces the weight of the weapon.

Another object of the present invention is to provide a recoil type automatic weapon cyclic shooting mechanism, which can reduce the rotational torque of the non-concentric force, reduce the vibration force of the gun, and increase the shooting accuracy.

In order to achieve the foregoing and other objectives of the invention, the technical means used in the present invention include: a barrel set that can accelerate the advancement of the warhead after the ammunition is fired, a gun set that provides firing and recoil energy transfer, and a recoil cushion. And the buffer reclamation group of the bolt reclamation function. Among them, the barrel set includes the barrel and barrel cover and other components, the gun set includes the breech block, the bolt, the bolt spring and other components, the buffer recovery group includes the return spring and buffer and other components. The single-cycle operation of this automatic cycle shooting mechanism is: the gun unit stays at the back of the gun to prepare for firing, the shooter pulls the trigger, releases the gun unit forward, and pushes the second round of ammunition into the chamber. After the ammunition is fired, the copper shell of the ammunition will be absorbed instantly The press recoil force compresses the bolt and bolt spring of the gun unit to store energy. The bolt (221) and other parts stay in place by its own inertial force, then the bolt spring releases energy to push the bolt, and the bolt receives the energy The backward compression buffer reclamation group travels backwards, and at the same time drives the breech block to complete the ejection and ejection actions. When the recoil spring and buffer bear and consume the recoil force of the gun, the recoil spring then rebounds to push the gun unit forward, and the bolt completes the push and advance action, and finally the bolt and the barrel are combined, and the bolt is fired. The needle fires a second round of ammunition, so that the goal of continuous shooting with recoil automatic weapons is achieved over and over again.

In order to achieve the purpose of the recoil type automatic weapon cyclic shooting mechanism of the present invention, a preferred embodiment includes a gun body, a barrel group, a gun unit, and a buffer reclamation unit; the barrel group has a gun Barrel, the barrel set is arranged on one side of the gun body; the gun set is arranged on one side of the barrel set, the gun set includes a bolt, a bolt and a bolt spring, the bolt spring is set Between the bolt and the bolt, the bolt is provided with a cam pin, the bolt is provided with a cam groove and a firing pin, the cam groove is an axial straight groove and allows the cam pin to move linearly therein, the The firing pin is fixedly arranged at one end of the breech block; the buffer reclamation group is arranged on one side of the gun unit, and the buffer reclamation group includes a buffer and a recoil spring.

In one embodiment, the barrel set further includes a barrel sleeve, and the barrel sleeve is disposed at one end of the barrel.

In one embodiment, the gun body is provided with an ejector, the bolt is provided with an ejector groove, and the ejector groove is used for the ejector to slide therein.

In one embodiment, the bolt is provided with a straight groove on one side, and the straight groove on the side allows the retractor to pass through.

The embodiments are only used to illustrate the possible implementation aspects of the present invention, but they are not intended to limit the scope of the present invention. In order to make the objectives, features, and advantages of the present invention obvious and easy to understand, a detailed description will be given below with reference to preferred embodiments of the present invention in conjunction with the accompanying drawings.

Please refer to Figure 2. Figure 2 is an exploded perspective view of the recoil type automatic weapon cyclic shooting mechanism of the embodiment of the present invention. As shown in the figure, the mechanism includes a gun body (20), a barrel group (21), and a gun unit (22) and buffer recovery group (23) and other 4 main assemblies.

Specifically, the recoil type automatic weapon cyclic shooting mechanism of the present invention, in a preferred embodiment, includes a gun body (20), a gun barrel group (21), a gun unit (22) and a buffer compound Into the group (23). Wherein, the barrel set (21) has a barrel (211), the barrel set (21) is set on one side of the gun body (20); the barrel set (22) is set on the barrel set (21) ), the gun unit (22) includes a bolt (221), a bolt (222) and a bolt spring (223). The bolt spring (223) is arranged on the bolt (221) and Between the bolt (222), the bolt (221) is provided with a cam pin (224), the bolt (222) is provided with a cam groove (225) and a firing pin (227), the cam groove (225) It is an axial straight slot and allows the cam pin (224) to move linearly therein, the firing pin (227) is fixed on one end of the gun bolt (222); the buffer reclamation group (23) is arranged on the gun unit ( 22) On one side, the buffer recuperation group (23) includes a buffer (231) and a recuperation spring (232).

Preferably, the gun body (20) is provided with an ejection stand (201), the breech block (222) is provided with an ejection stand (226), and the ejection stand (226) is provided for the ejection stand ( 201) Slide in it. The gun body (20) in the drawing is a schematic representation for marking the approximate position of the ejector (201).

More preferably, the bolt (221) is provided with a lateral straight groove (228), and the lateral straight groove (228) is for the retractor (201) to pass through.

The single-cycle operation of the automatic weapon cyclic shooting mechanism of the present invention is: the gun unit (22) stays at the rear end of the gun body (20) to prepare, the shooter pulls the trigger, releases the gun unit (22) forward, and pushes the second round of ammunition (24). ) Enters the chamber. After the ammunition (24) is fired, the chamber pressure and recoil force of the copper shell of the ammunition compresses the bolt (222) and the bolt spring (223) of the gun unit (22) to store energy, and then the bolt spring ( 223) Release energy to push the bolt (221), the bolt (221) receives the energy and compresses the buffer reclamation group (23) to travel backwards, and at the same time drives the bolt (222) to complete the ejection and ejection actions. When the recoil spring (232) and buffer (231) bear and consume the recoil force of the bolt (221), the recoil spring (232) rebounds and pushes the gun unit (22) forward, and the bolt (222) ) The push and advance actions are completed, and finally the bolt (222) is combined with the barrel (211), and the firing pin (227) fires the second round of ammunition (24), so that the goal of continuous shooting of the recoil automatic weapon is achieved.

Wherein, the barrel set (21) further includes a barrel sleeve (211). The barrel sleeve (211) is arranged at one end of the barrel (211). When the first ammunition (24) is fired, the return spring (232) ) And the buffer (231) bear and consume the recoil force of the bolt (221), the recoil spring (232) rebounds and pushes the bolt unit (22) forward, and the bolt (222) completes the push and advance The firing action, and finally the bolt (222) is combined with the barrel sleeve (211), and the firing pin (227) fires the second round of ammunition (24).

Since the present invention is suitable for small and medium-power rifle bullets or pistol bullets, the bolt (222) and barrel cover (211) are not locked. When the ammunition (24) is fired, the instant high-pressure gas generated by the propellant pushes the bullet forward, and the barrel assembly (21) does not move backward, the gas pushes the copper shell of the ammunition (24) and the bolt (222) backward, compressing the bolt spring (223) to store energy.

Due to its own mass inertia and the support of the buffer reclamation group (23), the bolt (221) stays in place at the moment the ammunition (24) is fired, and the bolt spring (223) of the bolt group (22) is affected by the ammunition. The copper shell of (24) and the rear seat of the breech block (222) are squeezed to store energy.

When the bolt spring (223) is compressed to the limit by the recoil force of the bolt (222), the bolt spring (223) starts to stretch, and the energy is released to push the bolt machine (221) and the buffer reclamation group (23) to retreat, and when the bolt machine (221) retreats , The cam pin (224) fixed to the bolt (221) is also backwards, because the cam groove (225) of the bolt (222) is an axial straight groove, the bolt (221) will not drive as the conventional structure The bolt (222) rotates, and the bolt (222) moves backward in a straight line, so it does not rotate.

Referring to Fig. 1 at the same time, compared with the aforementioned conventional shooting mechanism, such as the invention patent No. I585359, the conventional mechanism pushes the warhead forward by the high-pressure gas at the moment when the propellant is generated, and its chamber pressure is extremely high, and the barrel (11) The barrel sleeve (111) at the end must be in a locked combined state with the bolt (14) of the gun unit. When the bolt (13) retreats, under the limit of the stroke of the curved cam groove (141) of the bolt (14), the bolt (13) drives the bolt (14) to rotate and separates from the barrel sleeve (111). The latch has complex movements and easily consumes recoil energy (not simply a straight line movement) under the action of low and medium pressure recoil, and cannot be fired continuously. However, the present invention does not need to be provided with a locking mechanism, and the bolt (222) only moves in a straight line, which can be applied to ammunition with low and medium pressure.

The bolt (222) continues to withdraw the cartridge case backwards. When the cartridge case is detached from the barrel sleeve (212), the shell ejector (201) of the gun body (20) cooperates with the shell hook (not marked) to throw the cartridge case away from the gun body (20) , To complete the actions of "withdrawing" and "throwing"

When the buffer (231) of the buffer reclamation group (23) retreats and hits the bottom of the gun body (20), the "rear seat" that completes the automatic cycle is in place. At this time, the recoil spring (232) starts to rebound and release energy to push the buffer The piston of the gun (231) and the gun unit (22) move forward, and the push teeth (229) under the bolt (222) will push the secondary ammunition (24) forward into the chamber to complete the automatic cycle. Push the bullet” and “reel the bullet” action, and finally the bolt (222) enters the barrel sleeve (212) against the end of the barrel (211). At this time, because the firing pin (225) is protruding and fixed on the gun The end face of the latch (222) will directly hit the primer of the secondary round of ammunition (24). After the secondary round of ammunition (24) is successfully fired, it will start to "retract", "eject the shell", "back seat", and "return". , "Push bullet" and "Push bullet" and "Fire" automatic weapon firing cycle to achieve the purpose of automatic continuous shooting.

The invention belongs to a recoil type automatic weapon that can be fired continuously. It usually uses medium and low-power rifle bullets or pistol bullets instead of full-power rifle bullets. Therefore, the bolt (222) does not need to be locked with the barrel sleeve (212), and the firing needle (225) is fixedly arranged at the front end of the breech block (222). When the breech block (222) enters the barrel sleeve (212) and bears against the end of the barrel (211), it will directly hit the primer of the secondary ammunition (24) to ignite and launch. Medicine, can make the ammunition (24) fire stably.

The invention uses modular design to enable the mechanism to implement fully automatic shooting. Due to the simplified structure, it can reduce the weight of the weapon and reduce the occurrence of failures. Because the main components are all coaxially moving, it can reduce the rotation of non-coaxial force. Torque, which in turn can increase shooting accuracy.

The above-mentioned embodiments are only to illustrate the technical ideas and features of the present invention, and their purpose is to enable those who are familiar with the art to understand the content of the present invention and implement them accordingly. However, the patent scope of the present invention cannot be limited by this. All the equal changes or modifications made in accordance with the spirit of the present invention and the contents of the specification shall be covered by the scope of the patent of the present invention.

10: gun body 11: barrel 111: barrel sleeve 12: Gun barrel spring 13: Bolt 131: Cam pin 132: Striking pin ejector 133: Bolt Spring 14: Gun bolt 141: cam groove 142: Striking Needle 15: Re-entry spring seat 151: Re-advance spring 20: gun body 201: Drawback 21: Barrel Group 211: Barrel 212: Gun Barrel Cover 22: Gun unit 221: Gun Camera 222: Gun Bolt 223: Bolt Spring 224: cam pin 225: cam groove 226: Drawback 227: Striking Needle 228: Lateral straight groove 229: Push Spring Teeth 23: Buffer reclamation group 231: Buffer 232: reintroduction spring 24: Ammunition

Figure 1 is a schematic diagram of the structure of the conventional invention patent No. I585359. Fig. 2 is an exploded perspective view of a recoil type automatic weapon circulation shooting mechanism according to an embodiment of the present invention.

20: gun body

201: Drawback

21: Barrel Group

211: Barrel

212: Gun Barrel Cover

22: Gun unit

221: Gun Camera

222: Gun Bolt

223: Bolt Spring

224: cam pin

225: cam groove

226: Drawback

227: Striking Needle

228: Lateral straight groove

229: Push Spring Teeth

23: Buffer reclamation group

231: Buffer

232: reintroduction spring

24: Ammunition

Claims (4)

A recoil type automatic weapon cycle shooting mechanism, including: A gun body (20); A barrel set (21) with a barrel (211), the barrel set (21) is arranged on one side of the gun body (20); A gun assembly (22) is arranged on one side of the barrel assembly (21). The gun assembly (22) includes a bolt (221), a bolt (222) and a bolt spring (223). The bolt spring (223) is arranged between the bolt (221) and the bolt (222), the bolt (221) is provided with a cam pin (224), and the bolt (222) is provided with a cam groove (225) ) And a firing pin (227), the cam groove (225) is an axial straight groove and allows the cam pin (224) to move linearly therein, and the firing pin (227) is fixed on one end of the breech block (222) ;as well as A buffer reclamation group (23) is arranged on one side of the gun unit (22). The buffer reclamation group (23) includes a buffer (231) and a reclamation spring (232). The recoil type automatic weapon cyclic shooting mechanism according to claim 1, wherein the barrel set (21) further includes a barrel sleeve (211), and the barrel sleeve (211) is arranged on the barrel (211) One end. The recoil type automatic weapon cyclic shooting mechanism according to claim 1, wherein, the gun body (20) is provided with an ejector (201), and the gun bolt (222) is provided with an ejector groove (226), The ejector groove (226) is used for the ejector (201) to slide therein. The recoil type automatic weapon circulation shooting mechanism according to claim 3, wherein the bolt (221) is provided with a lateral straight groove (228), and the lateral straight groove (228) is used for the retractor (201) by.

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