Multi-stage inner barrel structure with inner diameter step joint mechanism

Abstract

To provide a structure for coaxially holding a large bore barrel for extending an inner barrel inside a silencer attached to an airsoft gun. [Solution] The large-bore barrel (2) is placed within a silencer (8) to reduce firing noise while achieving trajectory rectification, and the barrel is held axially by an elastic member (O-ring) (3). The barrel support member is detachable without tools and is compatible with multiple silencers and airsoft guns. This allows for both firing accuracy and quietness.

Description

[Technical Field]

[0001] This invention relates to an inner barrel structure to be attached to a toy gun such as an airsoft gun, an air gun, etc. In particular, by coaxially connecting the small-diameter first barrel portion (1) and the large-diameter second barrel portion (2), This relates to an inner barrel with a multi-stage structure that utilizes steps to straighten the propellant gas, improving trajectory stability and flight distance. [Background technology]

[0002] In the past, in order to improve accuracy and distance in airsoft guns, it was common to extend the inner barrel. Simply extending the gun with a single bore diameter was not enough to straighten the flow of propellant gases, which could result in unstable ballistics. In addition, extending the barrel often requires modifications to the gun itself, making it difficult for users to make such changes easily.

[0003] In the prior art, the barrel structure was a single bore, which did not provide sufficient rectification of the propellant gas. There was a limit to the improvement of accuracy and distance. This invention is a small diameter first barrel part (1) and a large diameter second barrel part (2) connected coaxially. The purpose of providing the step is to suppress turbulence in the propellant gas, enhance the flow straightening effect, and improve the trajectory stability and flight distance.

[0004] The inner barrel structure of the present invention comprises a first barrel portion (1) with a small inner diameter and a second barrel portion (2) with a large inner diameter, which are coaxially connected to each other. The step part has a shape that straightens the flow of the propellant gas. The barrel part is integrally molded or has a joint mechanism (5) at the center. It is formed as a split structure, and uses a barrel retaining O-ring (3) and a joint mechanism retaining O-ring (4). It can also be configured to be detachable without the use of tools. In addition, it can be placed inside the silencer body (8) via the front joint mechanism (6) and rear joint mechanism (7) and the silencer mounting adapter (10), In combination with the sound-absorbing material (11), it provides a sound-absorbing effect. Furthermore, the tip of the inner barrel protrudes forward from the muzzle end face (9). The device can be installed in either a substantially identical position or a rearward position, allowing for a variety of mounting configurations to be selected depending on the structure of the firearm.

[0005] According to this invention, the small diameter first barrel section (1) and the large diameter second barrel section (2) are connected with a step, which improves the rectification effect of the propellant gas, The center joint mechanism (5), the front joint mechanism (6), and the rear joint mechanism (7) are also included. The barrel retaining O-ring (3) and the joint mechanism retaining O-ring (4) allow the user to easily attach, detach, and replace them without using tools. Since it can be attached to the inside of the silencer body (8), it can be applied without modifying the existing firearm structure. In addition, it can be used with any type of barrel tip, whether protruding, flush, or rearward, making it flexible for use with a variety of firearms and applications. [Brief explanation of the drawings] [Figure 1] FIG. 1 is a cross-sectional view showing the configuration of the large bore barrel holding unit according to the present invention when it is placed inside the silencer body (8) and the tip of the barrel is protruding. [Figure 2] FIG. 2 is a cross-sectional view showing the configuration of the large bore barrel holding unit according to the present invention when it is placed inside the silencer body (8) and the tip of the barrel is not protruding. [Figure 3] Figure 3: Overall configuration diagram (cross section) of the large bore barrel holding unit. [Figure 4] Figure 4: Connection diagram (cross-sectional view) of the small-diameter first barrel section (1) and the large-diameter second barrel section (2). [Explanation of symbols]

[0006] 1 Small diameter first barrel 2 Large diameter second barrel 3 Barrel Retaining O-Rings 4 Joint mechanism retaining O-ring 5 Center of joint mechanism 6 Front of joint mechanism 7 Rear of joint mechanism 8 Silencer body 9 Muzzle 10 Silencer mounting adapter 11 Sound deadening material 12 Joint mechanism connecting screw

Claims

1. An inner barrel structure to be attached to an airsoft gun, The inner barrel structure is formed by coaxially connecting a small-diameter first barrel portion (1) and a large-diameter second barrel portion (2), The device comprises a first barrel portion (1) having a small inner diameter and a second barrel portion (2) having a large inner diameter and coaxially connected to the front of the first barrel portion (1), The inner barrel structure is characterized in that the inner diameter step rectifies the propellant gas, improving the ballistic stability and flight distance of the projectile.

2. The inner barrel structure is configured so that the first barrel portion (1) and the second barrel portion (2) can be separated, 2. The inner barrel structure according to claim 1, wherein the inner barrel structure is configured to be coaxially and detachably connected by joint mechanisms (5), (6), and (7).

3. 3. The inner barrel structure according to claim 1, wherein the inner barrel structure is disposed inside a silencer body (8) attached to a muzzle (9).

4. The inner barrel structure has a structure in which the tip portion protrudes forward from the muzzle end surface (9), The inner barrel structure according to any one of claims 1 to 3, which can be used in a structure in which the inner barrel structure is positioned at approximately the same position as or rearward of the muzzle end face (9).

5. The joint mechanism of the inner barrel structure is composed of a plurality of components (a front joint mechanism part (6), a center joint mechanism part (5), and a rear joint mechanism part (7)), Each component is provided with a joint mechanism connecting screw (12), and each joint mechanism holding O-ring (4) and barrel holding O-ring (3) are arranged; By fastening the joint mechanism connecting screw (12), the barrel is fixed and the axis is maintained. If the barrel does not protrude beyond the muzzle end face, the center of the joint mechanism (5) can be removed, and if the barrel protrudes, the joint can be configured using the center of the joint mechanism (5).

5. The silencer-inside-installation joint structure according to claim 1, wherein all of the components are configured to be detachable without using tools.

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