An adaptive gas regulator for a semi-automatic shotgun

Abstract

The invention discloses an adaptive gas regulator for a semi-automatic hunting rifle, comprising a regulator body, a sealing pad, a sealing spring, a spring seat and a positioning block. A protrusion is arranged outwardly on the large end surface of the front end of the regulator body to form an air-tight surface. A plurality of exhaust holes are evenly distributed along the axial direction on the air-tight surface, and the exhaust holes are communicated with the cavity of the regulator body. The regulator body is threadedly connected to the spring seat and connected to the positioning block through a connecting screw. The positioning block is connected to the spring seat. The sealing pad is sleeved on the regulator body and closely fits the air-tight surface of the regulator body through the sealing spring. The sealing spring is sleeved between the sealing pad and the spring seat. When the regulator is installed in cooperation with a gun body, it is positioned through the spring seat and the positioning block. The invention adds a spring adjustment structure to the semi-automatic hunting rifle regulator, so that when the hunting rifle fires bullets with different chamber pressures, the gas guide system energy can be automatically adjusted without switching the regulator.

Description

Technical Field

[0001] The invention belongs to the technical field of firearms and relates to an adaptive gas regulator for a semi-automatic hunting rifle. Background Art

[0002] 12 gauge semi-automatic shotgun used 2 3 / 4-inch and 3-inch hunting bullets. Since there are many types of these two types of bullets on the market and their energy is very different, it is necessary to set multiple gears using a traditional gas regulator for energy adjustment. However, the structural space of the firearm is limited, and generally only 3 to 4 gears can be set, such as "0", "1", "2" and "3" gears (such as Figure 1 As shown), "0" is the manual operation gear (most people don't like to use it), and the other 2 to 3 gears correspond to semi-automatic shooting. The advantage is that the gear can correspond to a specific bullet, which makes shooting comfortable, but the disadvantage is also obvious. Many bullets have no corresponding gears, resulting in either many shooting failures or large recoil when firing these bullets, making the shooting experience uncomfortable.

[0003] The Italian-made Benelli shotgun has a regulator based on a similar principle, but it cannot be disassembled, which limits the shooter's ability to use the two regulators interchangeably and reduces the fun of the shooting experience. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an adaptive gas regulator for a semi-automatic hunting rifle. The adaptive gas regulator can be used for different energy bullets. By improving the existing gas regulator, the regulator can hold the gas when shooting low-energy bullets and can release the gas when shooting high-energy bullets. The higher the pressure, the more gas is released, thereby meeting the comfortable shooting requirements of various bullets.

[0005] The object of the present invention is achieved in that:

[0006] An adaptive gas regulator for a semi-automatic hunting rifle comprises a regulator body, wherein a cavity is arranged inside the regulator body, and when the regulator is assembled with a gun body, an air chamber is formed between the regulator body, the gas guide hoop and the piston, and the air chamber is communicated with the gas guide hole of the regulator body and the gas guide hole of the gun barrel, and further comprises a sealing pad, a sealing spring, a spring seat and a positioning block, wherein a protrusion is arranged outwardly on the large end surface of the front end of the regulator body to form an air-blocking surface, and a plurality of exhaust holes are evenly distributed along the axial direction on the air-blocking surface, and the exhaust holes are communicated with the cavity of the regulator body, and the regulator body is threadedly fastened to the spring seat and connected to the positioning block through a connecting screw, and the positioning block is connected to the On the spring seat, the sealing gasket is sleeved on the regulator body and tightly fits with the air-sealing surface of the regulator body through the sealing spring. The sealing spring is sleeved between the sealing gasket and the spring seat. When the regulator is installed in conjunction with the gun body, it is positioned through the spring seat and the positioning block. When a low-energy bullet is fired, the pressure of the gunpowder gas on the sealing gasket is less than the spring force of the sealing spring. The sealing gasket seals the exhaust hole, and the gas guide system produces normal recoil. When a high-energy bullet is fired, the pressure of the gunpowder gas on the sealing gasket is greater than the spring force of the sealing spring. The sealing spring is compressed, and part of the high-pressure gas is discharged from the exhaust hole, so that the gas guide system obtains the same recoil as the low-energy bullet.

[0007] Furthermore, the front end of the regulator body is provided with a threaded rod in the axial direction, which is threadedly connected with the spring seat, the front end of the threaded rod is provided with a U-shaped groove in the vertical direction, and a through hole is provided in the radial direction, the positioning block is placed in the U-shaped groove of the regulator body, and a connecting screw is passed through the through hole, and the regulator body, the spring seat and the positioning block are connected by the connecting screw, and the area between the large end surface of the front end of the regulator body and the air-sealing surface forms a degassing surface, which reduces the contact between the sealing gasket and the degassing surface and improves the sealing and air-sealing.

[0008] Furthermore, the sealing gasket is annular, with a through hole for the threaded rod of the regulator body to pass through axially at the center, and a chamber for accommodating a sealing spring at the front end.

[0009] Furthermore, an annular cavity is provided in the middle of the spring seat for accommodating a sealing spring, a threaded hole is provided at the rear for fastening connection with the threaded rod of the regulator body, an axial load-bearing boss is provided on the outer peripheral surface of the middle portion for cooperating with the gun body, and is used for axial positioning when the regulator and the gun body are installed in cooperation, a through hole is provided in the radial direction for the connecting screw to pass through, a countersunk hole is provided in the axial direction at the upper end for placing a positioning block spring, and a slot is provided in the vertical direction at the front portion for accommodating the positioning block.

[0010] Furthermore, the positioning block has a notch at its upper end for accommodating a positioning block spring, a through hole in the middle for connection with the regulator body, spring seat and connecting screws, and a protrusion at its lower end for matching with the gun body for circumferential positioning when the regulator and the gun body are matched and installed.

[0011] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0012] 1. The present invention can seal and hold the air when shooting low-energy bullets within a certain range through the interaction between the sealing pad, the sealing spring and the exhaust hole of the regulator body, and can automatically adjust the energy of the gas guide system when shooting bullets with an energy exceeding the range, so that the recoil of the user shooting low-energy and high-energy bullets is close, which significantly improves the shooting comfort.

[0013] 2. When firing bullets with different chamber pressures (usually high chamber pressure bullets correspond to high energy bullets), the gas system energy can be automatically adjusted without changing the regulator. It can be directly installed in a certain gear of the existing shotgun, and the adaptability and shooting comfort of the shotgun to various bullets can be increased without modifying the firearm.

[0014] 3. Shooting enthusiasts can switch between the original regulator and the adaptive regulator according to their shooting preferences, experience different shooting effects and increase shooting pleasure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the gas regulator and shotgun installation structure in the prior art;

[0016] Figure 2 It is a schematic diagram of the structure of the present invention;

[0017] Figure 3 is an exploded view of the present invention;

[0018] Figure 4 is a cross-sectional view of the present invention;

[0019] Figure 5 It is a working state diagram of the present invention installed on a shotgun;

[0020] Figure 6 is a schematic diagram of the structure of the regulator body;

[0021] Figure 7 It is a structural diagram of the spring seat.

[0022] Reference numerals

[0023] In the accompanying drawings, 1 is a regulator body, 2 is a sealing gasket, 3 is a sealing spring, 4 is a spring seat, 5 is a connecting screw, 6 is a positioning block spring, 7 is a positioning block, 8 is a barrel, 9 is a gun body, 10 is a piston, 11 is a barrel gas guide hole, 12 is an air chamber,

[0024] 101 is the air-blocking surface, 102 is the air-releasing surface, 103 is the exhaust hole, 104 is the cavity, 105 is the threaded rod, and 106 is the U-shaped groove

[0025] 401 is an annular cavity, 402 is an axial bearing boss, 403 is a countersunk hole, 404 is a notch, 701 is a notch, and 702 is a convex block. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0027] In the present invention, the shooting direction of the gun barrel 8 is taken as the front end.

[0028] See also Figure 2-Figure 7 As shown, an embodiment of an adaptive gas regulator for a semi-automatic hunting rifle includes a regulator body 1, wherein a cavity 104 is provided inside the regulator body 1, which cooperates with a piston 10 in a gun body, wherein an air chamber 12 is formed between the piston 10 and the regulator body 1, and is communicated with an air guide hole of the regulator body and an air guide hole 11 of a gun barrel, and further includes a sealing pad 2, a sealing spring 3, a spring seat 4 and a positioning block 7, wherein a large end surface of the front end of the regulator body 1 is provided with a protrusion outwardly to form an air-sealing surface 101, wherein the air-sealing surface 101 is uniformly axially A plurality of exhaust holes 103 are arranged, and the exhaust holes 103 are communicated with the cavity 104 of the regulator body. The regulator body 1 is threadedly fastened to the spring seat 4 and connected to the positioning block 7 through the connecting screw 5. The positioning block 7 is connected to the spring seat 4. The sealing gasket 2 is sleeved on the regulator body 1 and closely fits with the air-sealing surface 101 of the regulator body through the sealing spring 3. The sealing spring 3 is sleeved between the sealing gasket 2 and the spring seat 4. When the regulator is installed in conjunction with the gun body 9, it is positioned by the spring seat 4 and the positioning block 7.

[0029] In this embodiment, if Figure 3-Figure 6 As shown, a threaded rod 105 is axially provided at the front end of the regulator body 1, which is threadedly fastened with the spring seat 4. A U-shaped groove 106 is vertically provided at the front end of the threaded rod 105, and a through hole is radially provided. The positioning block 7 is placed in the U-shaped groove 106 of the regulator body, and a connecting screw 5 is passed through the through hole. The regulator body 1, the spring seat 4 and the positioning block 7 are connected by the connecting screw 5. In order to avoid the influence of the pitch, the through hole of the regulator body is set to an oblong hole to ensure that the connecting screw 5 can pass through reliably; the area between the large end face of the front end of the regulator body 1 and the air-sealing surface 101 forms a degassing surface 102, and the periphery of the exhaust hole 103 on the air-sealing surface 101 and the air-sealing surface 101 only retains a width of about 1 mm to contact the sealing gasket 2, and the remaining parts form the degassing surface 102, thereby reducing the contact between the sealing gasket and the degassing surface and improving the sealing and air-sealing.

[0030] In this embodiment, if Figure 3-Figure 5 As shown, the sealing gasket 2 is annular, with a through hole for the regulator body threaded rod 105 to pass through in the center along the axial direction, and a chamber for accommodating the sealing spring 3 is provided at the front end.

[0031] The spring seat 4 is provided with an annular cavity 401 in the middle for accommodating the sealing spring 3, a threaded hole is provided at the rear for threadedly fastening connection with the threaded rod 105 of the regulator body, an axial load-bearing boss 402 is provided on the outer peripheral surface of the middle for cooperating with the gun body 9, for axial positioning when the regulator and the gun body 9 are installed in cooperation, a through hole is provided in the radial direction for the connecting screw 5 to pass through, a countersunk hole 403 is provided in the axial direction at the upper end for placing the positioning block spring 6, and a notch 404 is provided in the front vertically for accommodating the positioning block 7.

[0032] The upper end of the positioning block 7 is provided with a notch 701 for accommodating the positioning block spring 6, the middle part is provided with a through hole connected to the regulator body 1, the spring seat 4 and the connecting screw 5, and the lower end is provided with a convex block 702 that cooperates with the gun body. When the positioning block 7 is connected to the regulator body 1 and the spring seat 4 through the connecting screw 5, the positioning block 7 squeezes the positioning block spring 6, and the positioning block spring 6 lifts the positioning block and rotates it around the connecting screw 5 to insert the positioning block convex block 702 into the corresponding positioning groove on the gun body to position the regulator circumferentially.

[0033] The gas regulator in the present invention is set at the "2" position of the gas guide hoop of the gun body when assembled with the gun body, or it can be other positions, such as the "0", "1" or "3" positions. In this case, it is only necessary to modify the position of the gas guide hole on the regulator body corresponding to the gas guide hole of the barrel.

[0034] When low-energy bullets are fired, the pressure of gunpowder gas on the sealing gasket is less than the spring force of the sealing spring, the sealing gasket seals the exhaust hole, and the gas system produces normal recoil. When high-energy bullets are fired, the pressure of gunpowder gas on the sealing gasket is greater than the spring force of the sealing spring, the sealing spring is compressed, and part of the high-pressure gas is discharged from the exhaust hole, so that the gas system obtains the same or similar recoil as low-energy bullets.

[0035] When the adaptive gas regulator of the present invention is disassembled, the connecting screws are first loosened, the positioning block is removed, the spring seat is then screwed out from the regulator body, and the sealing spring and the sealing gasket are taken out to complete the component disassembly.

[0036] When the adaptive gas regulator of the present invention is removed from the gun, it is only necessary to press the rear end of the positioning block to disengage its front end from the corresponding slot on the gun body, and then rotate the gas regulator to disengage the axial load-bearing boss of the spring seat from the annular groove on the gun body, and then pull it outward to remove it. Conversely, when installing the device, the opposite operation is performed to form a detachable regulator of the present invention.

[0037] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than 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 in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. An adaptive gas regulator for a semi-automatic hunting rifle, comprising a regulator body, wherein a cavity is provided inside the regulator body, and when the regulator is assembled with a gun body, an air chamber is formed between the regulator body, the gas guide ring and the piston, and the air chamber is connected with the gas guide hole of the regulator body and the gas guide hole of the gun barrel, characterized in that: The cam is secured to the bottom of the airtight container and is preferably used to secure the airtight container to the cam face.

2. An adaptive gas regulator for a semi-automatic shotgun according to claim 1, characterized in that: A threaded rod is axially provided at the front end of the regulator body, which is threadedly fastened with the spring seat. A U-shaped groove is vertically provided at the front end of the threaded rod, and a through hole is radially provided. The positioning block is placed in the U-shaped groove of the regulator body, and a connecting screw is passed through the through hole. The regulator body, the spring seat and the positioning block are connected by the connecting screws. The area between the large end surface of the front end of the regulator body and the air-sealing surface forms an air-eliminating surface.

3. An adaptive gas regulator for a semi-automatic shotgun according to claim 2, characterized in that: The sealing gasket is annular, with a through hole for the threaded rod of the regulator body passing through the center along the axial direction, and a chamber for accommodating a sealing spring at the front end.

4. The adaptive gas regulator for a semi-automatic shotgun according to claim 2, characterized in that: An annular cavity is provided in the middle of the spring seat for accommodating a sealing spring, a threaded hole is provided at the rear for fastening connection with the threaded rod of the regulator body, an axial load-bearing boss is provided on the outer peripheral surface of the middle portion for cooperating with the gun body, and is used for axial positioning when the regulator and the gun body are installed in cooperation, a through hole is provided in the radial direction for the connecting screw to pass through, a countersunk hole is provided in the axial direction at the upper end for placing a positioning block spring, and a notch is provided in the vertical direction at the front portion for accommodating a positioning block.

5. An adaptive gas regulator for a semi-automatic shotgun according to claim 4, characterized in that: The upper end of the positioning block is provided with a notch for accommodating the positioning block spring, the middle part is provided with a through hole connected to the regulator body, the spring seat and the connecting screw, and the lower end is provided with a protrusion that cooperates with the gun body for circumferential positioning when the regulator and the gun body are installed in cooperation.

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