Adjustable self-adaptive air guide system for shotgun

Abstract

The utility model discloses an adjustable self-adaptive air guide system for a shotgun, which is used for automatically adjusting the speed of an automatic machine when shooting bullet seeds with different chamber pressures. Comprising a gun barrel and an air guide hoop, the air guide hoop is fixed to the gun barrel, a piston is arranged in the air guide hoop in a sliding fit mode, air guide holes are correspondingly formed in the gun barrel and the air guide hoop, an adjuster is further arranged in the air guide hoop, an adjuster air guide hole and an air leakage cavity are formed in the adjuster, the adjuster air guide hole is a stepped hole, and the adjuster air guide hole comprises a large hole section, a conical section and a small hole section. A large hole section of the regulator air guide hole faces the piston, a conical section of the regulator air guide hole is communicated with the gun barrel and an air guide hole in the air guide hoop, a small hole section of the regulator air guide hole is communicated with the air leakage cavity, a plug, an adjusting spring and an adjusting knob are sequentially arranged in the air leakage cavity, and the adjusting knob is matched in the air leakage cavity in a threaded mode and used for adjusting pre-pressure of the adjusting spring. And the plug plugs the small hole section of the air guide hole of the regulator under the action of the spring force of the regulating spring.

Description

Technical Field

[0001] The utility model relates to the technical field of hunting rifles, in particular to an adjustable self-adaptive gas guide system for hunting rifles. Background Art

[0002] Generally, semi-automatic and automatic firearms use a single-hole gas port. Since the shotgun pellet is placed in a plastic buttstock, the plastic buttstock and the pellet are pushed out of the barrel together by the gunpowder gas when shooting. When the buttstock passes through the gas hole, the gas hole will scratch the buttstock, and some fragments will enter the gas hoop through the gas hole. The plastic fragments will clog the gas hoop and cause a malfunction.

[0003] Generally, conventional regulators have multiple gears, and the size of the gas holes in each gear is different. The gear shifting controls the air intake by controlling the size of the gas holes to control the speed of the automatic machine. For example, when shooting bullets with different chamber pressures, it is necessary to switch back and forth to have a better shooting experience, and the operation is more cumbersome. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide an adjustable self-adaptive gas guide system for a hunting rifle, which can automatically adjust the speed of an automatic machine when shooting bullets with different chamber pressures.

[0005] The purpose of the utility model is achieved in this way:

[0006] An adjustable adaptive gas guide system for a hunting rifle comprises a gun barrel and a gas guide hoop, wherein the gas guide hoop is fixed on the gun barrel, a piston is slidably fitted in the gas guide hoop, gas guide holes are correspondingly arranged on the gun barrel and the gas guide hoop, and a regulator is also arranged in the gas guide hoop.

[0007] The regulator is provided with a regulator gas guide hole and an air release chamber. The regulator gas guide hole is a stepped hole. The regulator gas guide hole includes a large hole section, a tapered section, and a small hole section. The large hole section of the regulator gas guide hole faces the piston, the tapered section of the regulator gas guide hole is connected with the gas guide holes on the barrel and the gas hoop, the small hole section of the regulator gas guide hole is connected with the air release chamber, and a plug, an adjusting spring, and an adjusting knob are sequentially arranged in the air release chamber. The adjusting knob is threadedly fitted in the air release chamber, the adjusting knob is used to adjust the pre-pressure of the adjusting spring, the air release chamber is connected with the atmosphere, and the plug blocks the small hole section of the regulator gas guide hole under the action of the spring force of the adjusting spring.

[0008] Preferably, a plurality of gas holes are provided on the gun barrel, and the plurality of gas holes on the gun barrel are all connected with the gas holes on the gas hoop and the gas holes of the regulator.

[0009] Preferably, the gun barrel is provided with four gas guide holes, and the aperture of each gas guide hole on the gun barrel is 1.8 mm.

[0010] Preferably, when the adjusting knob is rotated into the limit position of the air release chamber, the plug and the adjusting knob come into contact with each other.

[0011] Preferably, mounting rods are provided at the facing ends of the plug and the adjusting knob, and both ends of the adjusting spring are sleeved on the mounting rods for positioning.

[0012] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0013] The gas holes on the barrel of this system use multiple smaller holes. Reducing the area of ​​a single hole can effectively reduce the entry of plastic fragments into the gas ring.

[0014] The utility model adds a spring adjustment structure to the regulator of the semi-automatic shotgun, so that when the shotgun fires bullets with different chamber pressures, the gas system energy can be automatically adjusted without changing the regulator, and the adaptability of the shotgun to various bullets and the shooting comfort can be increased without modifying the firearm. At the same time, an adjustment spring seat is provided to adjust the initial spring force of the adjustment spring, so that the deflation volume can be adjusted to adapt to more types of bullets with chamber pressures, thereby improving the product application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the appearance of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the gas guide hole of the barrel;

[0018] Figure 4 This is a schematic diagram of the working principle of the regulator;

[0019] Figure 4 The left pointed tip indicates that the gunpowder gas pushes the piston backward to drive the automatic machine to move; the right pointed tip indicates that the gunpowder gas pushes the plug forward to compress the adjusting spring, and then releases the gas after a gap is created;

[0020] Figure 5 This is a schematic diagram of the state where the adjustment knob is turned to the bottom;

[0021] Figure 6 This is the exploded diagram of the adaptive regulator.

[0022] Reference numerals

[0023] In the attached figure, 1. positioning pin (used to lock the gas hoop and regulator); 2. barrel; 3. gas hoop; 4. push rod (driven by the piston); 5. piston; 6. regulator; 7. plug; 8. adjusting spring; 9. adjusting knob. DETAILED DESCRIPTION

[0024] The invention discloses an adjustable adaptive gas guide system for a hunting rifle, comprising a gun barrel 2 and a gas guide hoop 3, wherein the gas guide hoop 3 is fixed on the gun barrel 2, a piston 5 is slidably fitted in the gas guide hoop 3, gas guide holes are correspondingly arranged on the gun barrel 2 and the gas guide hoop 3, a regulator 6 is also arranged in the gas guide hoop 3, the regulator 6 is provided with a regulator gas guide hole and an air release chamber, the regulator gas guide hole is a stepped hole, the regulator gas guide hole comprises a large hole section, a tapered section and a small hole section, the large hole section of the regulator gas guide hole faces the piston 5, the tapered section of the regulator gas guide hole is connected with the gun barrel 2 and the gas guide hole on the gas guide hoop 3, the small hole section of the regulator gas guide hole is connected with the air release chamber, a plug 7, an adjusting spring 8 and an adjusting knob 9 are arranged in sequence in the air release chamber, mounting rods are arranged at the facing ends of the plug 7 and the adjusting knob 9, and both ends of the adjusting spring 8 are sleeved on the mounting rod for positioning. The adjusting knob 9 is threadedly engaged in the air release chamber, and the adjusting knob 9 is used to adjust the preload of the adjusting spring 8. When the adjusting knob 9 is screwed into the limit position of the air release chamber, the plug 7 and the mounting rod of the adjusting knob 9 collide. A through hole is provided on the side of the air release chamber, and the through hole is connected to the atmosphere. Under the spring force of the adjusting spring 8, the plug 7 blocks the small hole section of the regulator air guide hole.

[0025] The gun barrel 2 is provided with a plurality of gas guide holes, and the plurality of gas guide holes on the gun barrel 2 are all connected with the gas guide holes and the regulator gas guide holes on the gas guide hoop 3. In this embodiment, the gun barrel 2 is provided with four gas guide holes, and the aperture of each gas guide hole on the gun barrel 2 is 1.8 mm.

[0026] Invention point:

[0027] 1. The gas holes on the barrel use multiple smaller holes to reduce the area of ​​a single hole. In this embodiment, the original gas hole is adjusted from one φ3.5 hole to four φ1.8 holes, and the cross-sectional width of a single hole is reduced by half, so that the hole scrapes the bullet butt, and the generated fragments are less and smaller, which can effectively reduce the size of plastic fragments entering the gas hoop, and at the same time reduce the amount of glue entering, effectively alleviate the phenomenon of glue accumulation blocking the gas hoop, and reduce the frequency and difficulty of maintenance.

[0028] 2. The front end of the regulator's gas guide hole opens the air hole (small hole section), and the plug blocks the vent hole under the action of the adjustment spring. When shooting, gunpowder gas enters the regulator, and the plug compresses the adjustment spring forward under the action of gunpowder gas, so that a gap is created between the plug and the vent hole, thereby releasing gas. The greater the gunpowder gas pressure, the greater the compression of the adjustment spring, the larger the gap between the plug and the vent hole, and the more gas is released, realizing the function of changing the speed reduction of the automatic machine when shooting bullets with different chamber pressures (the greater the chamber pressure, the greater the speed reduction of the automatic machine).

[0029] 3. The initial spring force of the adjustment spring can be adjusted by the adjustment knob to achieve the function of adjusting the deflation volume of the same type of bullets. It can be adjusted according to the shooter's own shooting experience; when the adjustment seat is screwed to the bottom, the adjustment seat will compact the plug and the deflation hole will be in a completely sealed state, which can meet the reliability requirements of shooting low-energy bullets.

[0030] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. An adjustable adaptive gas guide system for a hunting rifle, comprising a gun barrel and a gas guide hoop, wherein the gas guide hoop is fixed to the gun barrel, a piston is slidably fitted in the gas guide hoop, and gas guide holes are correspondingly provided on the gun barrel and the gas guide hoop, characterized in that: There is also a regulator inside the gas guide ring. The regulator is provided with a regulator gas guide hole and an air release chamber. The regulator gas guide hole is a stepped hole. The regulator gas guide hole includes a large hole section, a tapered section, and a small hole section. The large hole section of the regulator gas guide hole faces the piston, the tapered section of the regulator gas guide hole is connected with the gun barrel and the gas guide holes on the gas hoop, the small hole section of the regulator gas guide hole is connected with the air release chamber, and a plug, an adjusting spring, and an adjusting knob are sequentially arranged in the air release chamber. The adjusting knob is threadedly fitted in the air release chamber, and the adjusting knob is used to adjust the pre-pressure of the adjusting spring. The air release chamber is connected with the atmosphere, and the plug blocks the small hole section of the regulator gas guide hole under the action of the spring force of the adjusting spring.

2. The adjustable adaptive gas system for a hunting rifle according to claim 1, characterized in that: The barrel is provided with a plurality of gas holes, and the plurality of gas holes on the barrel are all connected with the gas holes on the gas hoop and the gas holes of the regulator.

3. The adjustable adaptive gas system for a hunting rifle according to claim 2, characterized in that: There are four gas holes on the barrel, and the diameter of each gas hole on the barrel is 1.8mm.

4. The adjustable adaptive gas system for a hunting rifle according to claim 1, characterized in that: When the adjusting knob is rotated into the limit position of the air vent chamber, the plug and the adjusting knob come into contact with each other.

5. The adjustable adaptive gas system for a hunting rifle according to claim 1, characterized in that: The facing ends of the plug and the adjusting knob are provided with mounting rods, and the two ends of the adjusting spring are sleeved on the mounting rods for positioning.

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