TWI428555B - 7.62 mm general machine gun gun speed adjustment device - Google Patents

Description

7.62 mm universal machine gun firing rate adjustment device

The present invention relates to weapon systems, and more particularly to a 7.62 mm universal machine gun firing rate adjustment device.

In order to improve the launch speed of traditional firearms, various countries around the world developed a variety of machine guns capable of firing bursts in the mid-19th century to the beginning of the 20th century. These machine guns can be zoned with strong firepower because they can be continuously fired. Stop enemy operations or kill infantrymen trying to break out of the blockade. However, the design of machine guns during this period is often large and cumbersome, lacking maneuverability, and can only be used to promote firepower in positioning operations or defensive wars.

Then, the machine gun began to experiment with the First World War and the Second World War. In actual combat, people found that machine guns can provide effective fire support for infantry in addition to most defensive tasks. If the design of the lightweight machine gun can even follow the infantry battle formation and promote the immediate and powerful firepower, this is the beginning of the development of the concept of the machine gun. However, most machine guns are still limited by weight restrictions and cannot meet the mission requirements of mechanized infantry mobile operations that flourished after the Second World War. Therefore, countries around the world have begun to pay attention to the problem of reducing the weight of machine guns. The design concept of "lightweight and multi-purpose machine guns" has emerged in this context.

After the 1950s, the "general machine gun" began to flourish. It has emerged as a balanced solution for both low-powered light machine guns and unmanned heavy machine guns. Soldiers on the battlefield can carry general machine guns to support various tasks. Fight with. However, due to the wide adaptability of the general machine gun's operational environment, soldiers may need to quickly pass through various difficult terrains or face a variety of extreme weather conditions. To ensure that the weapon system can operate normally under various conditions, general-purpose machine guns usually There will be a device that can adjust the rate of fire to control the appropriate energy required for normal shooting of machine guns in various combat environments and weather conditions. However, in currently known machine gun designs, there are few devices that can adjust the rate of fire. Some machine guns with adjustable rate of fire have complex adjustment mechanisms, and require special tools to disassemble and install, resulting in difficulties in cleaning and maintenance. In other parts, there are machine guns that can adjust the rate of fire. The adjustment method is not accurate enough. The device is loose due to the vibration of the shooting, which affects the rate of fire. Even the lack of energy causes the machine to recover from jamming.

Therefore, under such a design, the soldiers will hardly adjust the rate of fire, so that the machine gun that provides the adjustment of the rate of fire is similar to the function of adjusting the rate of fire. Therefore, the role of the general machine gun battlefield is reduced or even the advantage of the original environment adaptability is sacrificed, and the design of the fire rate adjustment device needs further improvement.

SUMMARY OF THE INVENTION The main object of the present invention is to provide a 7.62 mm universal machine gun firing rate adjusting device, which provides a simple structure and adjustment method for adjusting the firing rate.

In order to achieve the foregoing object, the present invention provides a 7.62 mm universal machine gun firing rate adjusting device, wherein the universal machine gun has a casing, a barrel and a firing assembly; the lower end of the casing has a grip, the grip The front end of the chassis has a trigger and a guard bow, and the front end of the chassis has a barrel connection port and a gas cylinder; one end of the barrel is connected to the barrel connection port of the chassis; the firing assembly is disposed in the chassis Medium and has a piston rod located in the gas cylinder. The firing rate adjusting device comprises: a fixing seat, one end is fixed on the barrel; the fixing seat has an air hole for guiding the high-pressure gas in the barrel after the firing bullet; a plunger fixed to the fixing a seat, and a rear end thereof extends into the gas cylinder; the plunger has an air guiding channel at the center thereof, and has an air inlet hole and a gas exhaust hole on the ring surface thereof, wherein the air inlet hole and the air hole of the fixing seat Connected to allow the aforementioned high pressure gas to enter the air passage of the plunger; the piston rod of the firing assembly abuts against the rear end of the plunger to cover the rear end of the air passage; a adjuster is installed The front end of the plunger is rotatable relative to the plunger; the adjuster has an adjusting member, and the adjusting member extends into the air guiding passage of the plunger; the adjusting member has a curved surface and contacts the air guiding channel of the plunger The toroidal surface; when the adjusting member is rotated, the curved surface of the adjusting member passes through the inner end of the venting hole; and a positioning member is disposed on the adjuster for fixing the adjuster to a specific position; The positioning member has a concave hole corresponding to the general machine gun With the front end of the bullet.

Thereby, the user can insert the front end of the bullet into the concave hole of the positioning member to move the positioning member, thereby rotating the adjuster, so that the curved surface of the adjusting member is closed, not closed or partially closed. The inner end is used to adjust the rate of fire.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view showing the appearance of a 7.62 mm universal machine gun provided in a preferred embodiment of the present invention. The main components of the universal machine gun are: a chassis 10, a stock 12, a rear end of the chassis 10, and a barrel 14 connected to the front end of the chassis 10.

2 shows an exploded view of a 7.62 mm universal machine gun provided by a preferred embodiment of the present invention, wherein the lower end of the housing 10 has a grip 16 having a trigger 18 and a guard 20 at the front end. The front end of the casing 10 has a barrel connection port 22 and a gas cylinder 23. The barrel 14 is coupled to the barrel connection port 22. The interior of the chassis 10 has a chamber (not shown) with its front end connected to the barrel connection port 22. The chassis 10 is provided with a firing assembly. The firing assembly includes a rifle 24, an L-shaped link 26, a piston rod 28, and a re-entry lever 30 and a retracting spring 32. The rifle 24 is mounted in a chamber with a striker (not shown) for firing the bullet. The L-shaped link 26 has a main section 261 and a connecting section 262. The connecting section 262 is perpendicular to the bolt 24 and has one end connected to the rear end of the bolt 24 and the other end connected to the main section 261. The rear end of the main section 261 has a hole for the retracting rod 30 and the recoil spring 32 to extend. The piston rod 28 is located in the gas cylinder 23, and its rear end is connected to the front end of the main section 261.

The main feature of the present invention is that a gas regulator 34 is disposed between the barrel 14 and the gas cylinder 23 of the housing 10. Referring to FIG. 3, the gas regulator 34 mainly comprises a fixing base 36, a plunger 38, a regulator 40 and a positioning member 42.

The fixing base 36 is composed of a barrel base 44, a plunger seat 46 and a connecting section 48 for connecting the barrel base 44 and the plunger seat 46. The barrel base 44 has a bore for the barrel 14 to pass through and the plunger seat 46 is aligned with the gas cylinder 23. The plunger seat 46 also has a bore in which the plunger 38 is mounted and the rear end of the plunger 38 extends into the gas cartridge 23. The connecting section 48 has an air vent 50 that communicates with the bore of the barrel base 44 and the bore of the plunger seat 46. The barrel 14 has a venting opening, and the plunger 38 has an air inlet 52 through which the high pressure gas in the barrel 14 after the firing of the bullet can be passed. The air vent 50 of 36 and the air intake opening 52 of the plunger 38 enter the plunger 38 as shown in FIG. The mounting seat 36 has a shoulder surface 54 on the outer ring surface and three recesses 56 on the front side of the shoulder surface 54 with a rail 58 in communication between the three recesses 56.

The plunger 38 is a tubular member having an air passage 60 in the center. The plunger 38 has a length greater than the plunger seat 46 such that the ends of the plunger 38 project from the plunger seat 46. The plunger 38 further has a venting opening 62 adjacent the front end and outside of the plunger seat 46. Both the intake hole 52 and the exhaust hole 62 of the plunger 38 communicate with the air passage 60. The plunger 38 has a ring groove 64 near the front end, and a notch 66 communicates with the ring groove 64. The front end of the piston rod 28 is tightly abutted against the rear end of the plunger 38 by the action of the recoil spring 32 to cover the rear end of the air passage 60.

Referring to FIG. 4, the adjuster 40 is a bottle-like member having a top surface 68 and a toroidal surface 70. The inner end of the top surface 68 has an adjusting member 72, and the inner end of the toroid 70, near the top surface 68, has a guiding block 74. The adjusting member 72 is a long rectangular cylinder having a curved surface on both sides of the long axial direction of the transverse plane; and the long axial diameter is equal to the diameter of the air guiding passage 60 of the plunger 38. The annulus 70 has a notch 76 and a cylindrical projection 78 beside the notch 76. The inside of the projection 78 has a groove 80 having a rear end open. In addition, a hole 82 is formed in the annulus 70 to extend into the recess 80. A spring 84 and the positioning member 42 are sequentially mounted in the groove 80 of the convex portion 78. The positioning member 42 is a cylindrical member having a circular arc end at its outer end and a long groove 86 at the middle portion and a recessed hole 88 near the arc end. The recess 88 is shaped to correspond to the shape of the front end of the 7.62 mm bullet. Referring to FIG. 5, a pin 90 is inserted through the hole 82 in the annulus and passes through the long slot 86 of the positioning member 42, whereby the positioning member 42 is restrained in the recess 80 and can only Reciprocating within the range of the long groove 86. The spring 84 is pushed outwardly from the positioning member 42 such that the initial position of the positioning member 42 is outwardly extended until the pin 90 abuts against the inner end of the long groove 86. At this time, the positioning hole 42 is recessed. 88 is exposed outside of the adjuster 40.

The adjuster 40 is mounted on the front end of the plunger 38. First, the notch 66 at the front end of the plunger 38 is aligned with the guiding block 74 on the inner side of the adjuster 40, and the guiding block 74 enters the annular groove 64 from the notch 66. At this time, after the angle of the adjuster 40 is rotated, the guiding block 74 is moved away from the notch 66 and moved along the ring groove 64, so that the adjuster 40 is mounted on the plunger 38, and the adjuster 40 can only rotate, not axially. In addition, the adjusting member 72 of the adjuster 40 The air passage 60 of the plunger 38 is inserted into the air passage 60 of the plunger 38, and the curved surface on both sides of the adjusting member 72 contacts the annular surface of the air guiding passage 60. The length of the adjustment member 72 will pass over the venting opening 62 of the plunger 38 but does not reach the intake opening 52. Moreover, the arcuate end of the positioning member 42 abuts against the shoulder surface 54 of the fixing seat 36 and moves between the three dimples 56 along the rail 58 thereon.

Referring to FIG. 7 , if the adjusting member is to be rotated, the front end of the bullet 92 of the machine gun needs to be inserted into the recess 88 of the positioning member 42 , and the positioning member 42 is biased to move outward to make the arc end thereof Ditch 56. Thus, the adjuster 40 can be rotated and the arcuate end of the retaining member 42 can be moved along the rail 58 until the lower recess 56 is dropped, and the adjuster 40 is again positioned there.

The effect of rotating the adjuster 40 is as shown in Figs. When the adjuster 40 is rotated as described above until the arcuate end of the positioning member 42 falls into the first recess 56, as shown in FIG. 8, the arcuate surface of the adjusting member 72 will place the plunger 38. The venting opening 62 is closed and the toroidal surface of the adjuster 40 covers all of the inner end of the venting opening 62. At this time, the high pressure gas generated after firing a bullet (not shown) enters the air passage 60 by the barrel 14 passing through the air hole 50 of the fixing seat 36 and the air inlet 52 of the plunger 38. Since the vent hole 62 is closed, all the gas will flow backward to push the piston rod 28 backward, thereby causing the rifle 24 to retreat for the purpose of shelling, shelling, and bombing (not display). After the piston rod 28 retreats away from the plunger 38, the high pressure gas enters the gas cylinder 23 and is dissipated by the venting holes 94 (Fig. 6) in the gas drum. Then, the recoil spring 32 will push the entire set of firing assemblies forward, at this time, the gun The bullet is lifted up and the piston rod 28 is again returned to a position against the rear end of the plunger 38. If the bullet is fired again, the aforementioned action will be repeated.

When the adjuster 40 is rotated as described above until the arc end of the positioning member 42 falls into the second recess 56, as shown in FIG. 9, the arc surface of the adjusting member 72 will all leave the plunger. The venting opening 62 of the 38, and the notch 76 in the annulus 70 of the adjuster 40 will correspond to the venting opening 62. When the high-pressure gas generated after the bullet is fired, a part of the high-pressure gas is discharged from the exhaust hole 62; the remaining portion acts on the piston rod 28 to perform the aforementioned operation. When the adjuster 40 is rotated in the foregoing manner until the arc end of the positioning member 42 falls into the third recess 56, as shown in FIG. 10, the arc surface of the adjusting member 72 covers only a part of the The venting opening 62 (the notch 76 on the annular surface of the adjuster 40 will still correspond to the venting opening 62). Similarly, a part of the high-pressure gas (the amount of gas will be less than that shown in Fig. 9) is discharged from the vent hole 62; the remaining portion acts on the piston rod 28.

Comparing the state shown in Fig. 8, Fig. 9, and Fig. 10, in the state of Fig. 8, the vent hole 62 is completely closed, and all the high pressure gas acts on the piston rod 28, so that the machine gun at this time The rate of fire will be the highest; next is the state of Figure 10, the vent 62 is only partially closed; and the lowest rate of machine gun firing is the state of Figure 9, the vent 62 is fully open.

In summary, when the warrior uses the general machine gun provided by the present invention on the battlefield, it only needs to use the machine gun bullet to adjust the rate of fire. The adjustment mechanism is simple, and the adjustment method is also very simple, which is very consistent with the battlefield. The ever-changing needs.

The above is only a preferred embodiment of the present invention, and equivalent structural changes to the scope of the present invention and the scope of the claims are intended to be included in the scope of the present invention.

10‧‧‧Chassis

12‧‧‧ Stock

14‧‧‧ barrel

16‧‧‧ grip

18‧‧‧ trigger

20‧‧‧ guard bow

22‧‧‧Bob connection

23‧‧‧ Gas cylinder

24‧‧‧ gun machine

26‧‧‧ Connecting rod

261‧‧‧ main section

262‧‧‧ Connection section

28‧‧‧ piston rod

30‧‧‧Return rod

32‧‧‧Return spring

34‧‧‧ Gas Regulator

36‧‧‧ Fixed seat

38‧‧‧Plunger

40‧‧‧ adjuster

42‧‧‧ Positioning parts

44‧‧‧The barrel base

46‧‧‧Plunger

48‧‧‧Connection section

50‧‧‧ vent

52‧‧‧Air intake

54‧‧‧ Shoulder

56‧‧‧ dimples

58‧‧‧ Track

60‧‧‧ airway

62‧‧‧ venting holes

64‧‧‧ Ring groove

66‧‧‧ gap

68‧‧‧ top surface

70‧‧‧nano

72‧‧‧Adjustment

74‧‧‧Guiding block

76‧‧‧ gap

78‧‧‧ convex

80‧‧‧ Groove

82‧‧‧ hole

84‧‧‧ Spring

86‧‧‧Long slot

88‧‧‧ recessed hole

90‧‧ ‧ sales

92‧‧‧ bullets

94‧‧‧ venting holes

1 is a perspective view of a general machine gun according to a preferred embodiment of the present invention; FIG. 2 is an exploded view of a general machine gun according to a preferred embodiment of the present invention; FIG. 3 is a preferred embodiment of the present invention. FIG. 4 is a perspective view of a adjuster of a firing rate adjusting mechanism of a general machine gun according to a preferred embodiment of the present invention; FIG. 5 is a perspective view of a preferred embodiment of the present invention; FIG. 6 is a partial cross-sectional view of a general machine gun according to a preferred embodiment of the present invention; FIG. 7 is a schematic diagram of a bullet adjusting adjuster according to a preferred embodiment of the present invention; a cross-sectional view of the preferred embodiment showing a state in which the adjuster is adjusted to a maximum rate of fire; FIG. 9 is a cross-sectional view showing a state in which the adjuster is adjusted to a minimum rate of fire according to a preferred embodiment of the present invention; and FIG. A cross-sectional view of a preferred embodiment showing that the adjuster is adjusted to Moderate rate of fire.

10. . . Chassis

12. . . Buttstock

14. . . barrel

16. . . Grip

twenty two. . . Barrel connector

twenty three. . . Gas cylinder

twenty four. . . Gun machine

26. . . link

261. . . Main section

262. . . Connection segment

28. . . Piston rod

30. . . Reintroduction rod

32. . . Reentry spring

34. . . Gas regulator

Claims (6)

a 62 mm universal machine gun firing rate adjusting device, wherein the universal machine gun has a casing, a barrel and a firing assembly; the lower end of the casing has a grip, and the front end of the grip has a trigger and a guard bow, and The front end of the chassis has a barrel connection port and a gas tube; one end of the barrel is connected to the barrel connection port of the chassis; the firing assembly is disposed in the chassis, and has a piston rod located in the gas cylinder; The firing rate adjusting device comprises: a fixing seat, one end is fixed on the barrel; the fixing seat has an air hole for guiding the high-pressure gas in the barrel after the firing bullet; a plunger fixed to the fixing a seat, and a rear end thereof extends into the gas cylinder; the plunger has an air guiding channel at the center thereof, and has an air inlet hole and a gas exhaust hole on the ring surface thereof, wherein the air inlet hole and the air hole of the fixing seat Connected to allow the aforementioned high pressure gas to enter the air passage of the plunger; the piston rod of the firing assembly abuts against the rear end of the plunger to cover the rear end of the air passage; a adjuster is installed At the front end of the plunger, relative to the The adjusting device has an adjusting member, and the adjusting member extends into the air guiding passage of the plunger; the adjusting member has a curved surface contacting the annular surface of the air guiding channel of the plunger; when the adjusting member is rotated, the adjusting member The curved surface of the adjusting member passes through the inner end of the venting hole; and a positioning member is disposed on the adjuster for fixing the adjuster to a specific position; the positioning member has a concave hole and a shape thereof Corresponding to the front end of the bullet used by the universal machine gun; Wherein, the adjuster is a bottle-like element having a top surface and a ring surface; the adjusting member is disposed at an inner end of the top surface; the ring surface has a notch corresponding to the exhaust of the plunger a hole; thereby, the user can insert the front end of the bullet into the recess of the positioning member to move the positioning member, thereby rotating the adjuster, so that the curved surface of the adjusting member is closed, not closed or partially closed. The inner end of the vent is used to adjust the rate of fire. The 7.62 mm universal machine gun firing rate adjusting device according to claim 1, wherein the fixing base is a barrel base, a plunger seat and a connecting portion connecting the barrel base and the plunger The barrel is fixed in the barrel base, the plunger is fixed in the plunger seat, and the connecting hole has the air hole therein. a 7.62 mm universal machine gun firing rate adjusting device according to claim 1, wherein the fixing seat has a shoulder surface on the outer ring surface and a plurality of dimples on the shoulder surface; The front end will fall into the dimple to position the adjuster, and rotating the adjuster will move the locator to another recess to position it. According to the spoke speed adjusting device of the 7.62 mm universal machine gun described in claim 3, wherein the shoulder surface of the fixing seat further has a rail connecting the dimples. The 7.62 mm universal machine gun firing rate adjusting device according to claim 1, wherein the plunger has a ring groove and a notch communicates with the ring groove; the adjuster has a guiding block, and the notch can enter the In the ring groove, the adjuster is mounted on the plunger and the adjuster is only rotatable relative to the plunger. A 7.62 mm universal machine gun firing rate adjusting device according to the first aspect of the patent application, wherein the adjuster has a groove, wherein a spring and the positioning member are sequentially disposed; the positioning member has a length a slot; the adjuster further has a hole extending into the groove for a pin to be inserted through the hole and passing through the long groove of the positioning member, whereby the positioning member is restrained in the groove It can only reciprocate within the range of the long groove.