Carbon fiber inflator for air gun

Abstract

The utility model discloses a carbon fiber inflator for an air gun, which comprises an inner container made of aluminum alloy and a casing made of carbon fiber and wrapped outside the inner container, the casing is formed by winding and wrapping carbon fiber, the inner container is provided with an air passage extending along the axial direction of the inner container, and external connecting parts are formed at two axial ends of the inner container. The inflator is provided with the inner container made of the aluminum alloy and the outer shell made of the carbon fibers and wrapped outside the inner container, and the outer shell is formed by winding and wrapping the carbon fibers through the winding technology and is light in weight and high in strength, so that under the condition that the inflator is the same in compression capacity, the inflator is not prone to falling off. And the thickness of the liner can be reduced (the pressure bearing capacity of the thinned liner is compensated by the shell), so that the weight of the inflator is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air guns, in particular to a carbon fiber air cylinder for air guns. Background Art

[0002] An airgun is a cold-powered firing device that uses the instantaneous release of compressed gas to propel a bullet. It consists of a cylinder that stores the gas. Because the internal pressure of an airgun is high, to ensure it has good pressure-bearing capacity, it is constructed from an aluminum alloy. The thickness of the aluminum alloy is proportional to its pressure-bearing capacity. Therefore, when the airgun needs to withstand high pressures, the use of a thicker aluminum alloy results in a heavier cylinder, which can affect the user experience. Utility Model Content

[0003] The purpose of the utility model is to provide a carbon fiber air cylinder for air guns, so as to solve the problem that the air cylinders for existing air guns are made of aluminum alloy, and the pressure bearing capacity of the air cylinder is proportional to the thickness of the aluminum alloy, resulting in a heavy weight of the air cylinder with a larger pressure bearing capacity.

[0004] The utility model is realized through the following technical solutions:

[0005] A carbon fiber air cylinder for an air gun includes an inner liner made of aluminum alloy and an outer shell made of carbon fiber wrapped around the inner liner. The outer shell is formed by winding and wrapping the inner liner using a carbon fiber winding process. The inner liner has an air passage extending along its axial direction, and the inner liner has external connection parts formed at both axial ends.

[0006] Furthermore, the inner shell has a main cylinder portion and two auxiliary cylinder portions provided at both axial ends of the main cylinder portion, the inner diameters of the two auxiliary cylinder portions are smaller than the inner diameter of the main cylinder portion, and the external connection portion is formed on each of the auxiliary cylinder portions.

[0007] Furthermore, the secondary cylinder portion and the main cylinder portion are integrally formed.

[0008] Furthermore, the secondary cylinder portion and the main cylinder portion slowly transition to form a transition arc portion, and the inner diameter of the transition arc portion gradually increases from the secondary cylinder portion to the main cylinder portion.

[0009] Furthermore, the external connection portion is an internal thread formed on the inner wall of the airway end.

[0010] Furthermore, the outer shell matches the inner shell in shape, and the axial length of the outer shell is not less than the axial length of the inner shell.

[0011] Furthermore, the outer shell has a plain woven fabric layer, a first angle yarn layer, a second angle yarn layer and a transparent glass cloth layer distributed in sequence from the inside to the outside, the plain woven fabric layer is composed of a plain woven fabric wrapped around the inner liner, the first angle yarn layer is composed of a first angle yarn wrapped around the plain woven fabric layer, the second angle yarn layer is composed of a second angle yarn wrapped around the first angle yarn layer, and the transparent glass cloth layer is composed of a transparent glass cloth wrapped around the second angle yarn layer.

[0012] The advantage of this technical solution is that by configuring the air cylinder with an inner liner made of aluminum alloy and an outer shell made of carbon fiber wrapped around the inner liner, since the outer shell is wrapped by a carbon fiber winding process, it is light and has high strength. Therefore, under the condition of the same pressure bearing capacity of the air cylinder, the thickness of the inner liner can be reduced (the pressure bearing capacity reduced by thinning the inner liner is compensated by the outer shell), thereby reducing the weight of the air cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments.

[0015] Figure 1 is a perspective view of a carbon fiber air cylinder for an air gun disclosed in an embodiment;

[0016] Figure 2 is a split diagram of a carbon fiber air cylinder for an air gun disclosed in an embodiment;

[0017] Figure 3 is a cross-sectional view of a carbon fiber air cylinder for an air gun disclosed in an embodiment;

[0018] Figure 4 It is a three-dimensional diagram of the inner container in the embodiment. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example: Figure 1-4As shown, the carbon fiber air cylinder for an air gun includes an inner liner 1 made of aluminum alloy and an outer shell 2 made of carbon fiber wrapped around the inner liner 1. The outer shell 2 is formed by winding and wrapping with a carbon fiber winding process. The inner liner 1 has an air channel 101 extending along its axial direction. The inner liner 1 has external connecting parts 102 formed at both ends of its axial direction. The inner liner 1 is formed by stamping, spinning, stretching or seamless tube extrusion. The external connecting part 102 is used to connect with a plug, a valve body or a connecting seat.

[0021] The steps of the carbon fiber winding process are as follows: first, the inner liner 1 is cleaned, then the surface of the inner liner 1 is sandblasted, then the inner liner 1 is wrapped with a plain woven cloth to form a plain woven cloth layer, the plain woven cloth layer is wrapped with a first angle yarn to form a first angle yarn layer, the first angle yarn layer is wrapped with a second angle yarn to form a second angle yarn layer, and the second angle yarn layer is wrapped with a transparent glass cloth to form a transparent glass cloth layer, wherein the plain woven cloth is a 3K plain woven cloth, the first angle yarn and the second angle yarn are made of carbon fiber material, the winding angle of the first angle yarn is perpendicular to the winding angle of the second angle yarn, and since the winding angles of the first angle yarn and the second angle yarn are perpendicular to each other, the second angle yarn can resist the vertical tension and provide additional compressive resistance, and finally, the outer shell 2 is tightened, baked, cut and polished by a bundling, packaging and tensioning device (existing bundling, packaging and tensioning device). The outer shell 2 formed by the above-mentioned carbon fiber winding process has good structural strength.

[0022] The present embodiment provides a carbon fiber air cylinder for air guns to solve the problem that the air cylinders for existing air guns are made of aluminum alloy, and the pressure-bearing capacity of the air cylinder is proportional to the thickness of the aluminum alloy, resulting in a heavier weight of the air cylinder with a larger pressure-bearing capacity. The air cylinder is mainly configured to include an inner liner 1 made of aluminum alloy and an outer shell 2 made of carbon fiber wrapped around the inner liner 1. Since the outer shell 2 is wrapped by a carbon fiber winding process, it is light and has high strength. Therefore, under the condition that the pressure-bearing capacity of the air cylinder remains the same, the thickness of the inner liner 1 can be reduced (the pressure-bearing capacity reduced by thinning the inner liner 1 is compensated by the outer shell 2), thereby reducing the weight of the air cylinder. In addition, air cylinders with different pressure resistance levels can be produced by adjusting the thickness ratio of the inner liner 1 and the outer shell 2 (adjusting the thickness of each carbon fiber layer constituting the outer shell 2).

[0023] In this embodiment of the present invention, the outer shell 2 comprises, from the inside out, a plain woven fabric layer (not shown), a first angle yarn layer (not shown), a second angle yarn layer (not shown), and a transparent glass fabric layer (not shown). The plain woven fabric layer is composed of 3K plain woven fabric wrapped around the inner liner 1, the first angle yarn layer is composed of first angle yarn wrapped around the plain woven fabric layer, the second angle yarn layer is composed of second angle yarn wrapped around the first angle yarn layer, and the transparent glass fabric layer is composed of transparent glass fabric wrapped around the second angle yarn layer. The first and second angle yarns are made of carbon fiber.

[0024] In the embodiment of the present invention, the inner liner 1 comprises a main cylinder portion 103 and two auxiliary cylinder portions 104 provided at the two axial ends of the main cylinder portion 103, wherein the inner diameters of the two auxiliary cylinder portions 104 are smaller than the inner diameter of the main cylinder portion 103, and an external connection portion 102 is formed on each auxiliary cylinder portion 104. The above arrangement facilitates the assembly of the external connection portion 102 with an external component (plug, valve body or connecting seat) by configuring the inner liner 1 into the main cylinder portion 103 and the two auxiliary cylinder portions 104 provided at the two axial ends of the main cylinder portion 103, wherein the inner diameters of the two auxiliary cylinder portions 104 are smaller than the inner diameter of the main cylinder portion 103.

[0025] In the embodiment of the present invention, the secondary tube portion 104 is integrally formed with the main tube portion 103. Since the secondary tube portion 104 is integrally formed with the main tube portion 103, the manufacturing and processing of the inner liner 1 is facilitated.

[0026] In the embodiment of the present invention, the secondary tube portion 104 and the main tube portion 103 gradually transition to form a transition arc portion 105, and the inner diameter of the transition arc portion 105 gradually increases from the secondary tube portion 104 to the main tube portion 103. Due to the gradual transition between the secondary tube portion 104 and the main tube portion 103, stress concentration is avoided at the connection between the secondary tube portion 104 and the main tube portion 103, thereby improving the structural strength of the inner liner 1.

[0027] In the embodiment of the present invention, the external connection portion 102 is an internal thread formed on the inner wall of the end of the airway 101. By configuring the external connection portion 102 as an internal thread formed on the inner wall of the end of the airway 101, the external connection portion 102 has good airtightness when connected to the plug, valve body or connecting seat, and is easy to assemble and disassemble, and has good strength.

[0028] In this embodiment of the present invention, the outer shell 2 is shaped to fit the inner liner 1, and the axial length of the outer shell 2 is not less than the axial length of the inner liner 1. Because the outer shell 2 is shaped to fit the inner liner 1 and the axial length of the outer shell 2 is not less than the axial length of the inner liner 1, the outer shell 2 completely covers the inner liner 1, giving the air pump excellent pressure-bearing capacity.

[0029] It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information. In addition, the terms "center of a circle", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., which indicate orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] The above descriptions are provided in conjunction with specific content to provide one or more implementation methods, and do not limit the specific implementation of the present invention to these descriptions. Any similarity or similarity with the methods, structures, etc. of the present invention, or any technical deduction or replacement based on the concept of the present invention shall be considered protected by the present invention.

Claims

1. A carbon fiber air cylinder for an air gun, characterized in that: The invention comprises an inner liner made of aluminum alloy and an outer shell made of carbon fiber wrapped around the inner liner. The outer shell is formed by winding and wrapping with a carbon fiber winding process. The inner liner has an air passage extending along its axial direction, and the inner liner has external connection parts formed at its two axial ends.

2. The carbon fiber air cylinder for air gun according to claim 1, characterized in that: The inner shell comprises a main cylinder portion and two auxiliary cylinder portions provided at both axial ends of the main cylinder portion. The inner diameters of the two auxiliary cylinder portions are smaller than the inner diameter of the main cylinder portion. The external connection portion is formed on each of the auxiliary cylinder portions.

3. The carbon fiber air cylinder for air gun according to claim 2, characterized in that: The secondary cylinder portion is integrally formed with the main cylinder portion.

4. The carbon fiber air cylinder for air gun according to claim 3, characterized in that: The secondary cylinder portion and the main cylinder portion transition slowly to form a transition arc portion, and the inner diameter of the transition arc portion gradually increases from the secondary cylinder portion to the main cylinder portion.

5. The carbon fiber air cylinder for air gun according to claim 1, characterized in that: The external connection portion is an internal thread formed on the inner wall of the airway end portion.

6. The carbon fiber air cylinder for air gun according to claim 1, characterized in that: The outer shell is matched with the inner shell in shape, and the axial length of the outer shell is not less than the axial length of the inner shell.

7. The carbon fiber air cylinder for air gun according to claim 1, characterized in that: The outer shell has a plain woven fabric layer, a first angle yarn layer, a second angle yarn layer and a transparent glass cloth layer distributed in sequence from the inside to the outside. The plain woven fabric layer is composed of a plain woven fabric wrapped around the inner liner, the first angle yarn layer is composed of a first angle yarn wrapped around the plain woven fabric layer, the second angle yarn layer is composed of a second angle yarn wrapped around the first angle yarn layer, and the transparent glass cloth layer is composed of a transparent glass cloth wrapped around the second angle yarn layer.

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