Javelin made of synthetic material

Abstract

The invention relates to the technical field of sports equipment, in particular to a javelin. The javelin made of the synthetic material comprises a javelin rod and a javelin head which are made of the synthetic material, a grip is arranged in the middle of the javelin rod, the javelin rod is movably connected with one end of the javelin head through a threaded rod, and an internal thread is arranged in one end of the javelin head and connected with an external thread on the threaded rod. And an air injection device is arranged in the gun head. The whole material of the gun barrel is made of the super-hard aluminum alloy material, the structure of wrapping the carbon fiber cloth is adopted, the whole strength and toughness are improved, the gun head is made of the stainless steel 304 material, and better corrosion resistance, abrasion resistance and toughness are achieved. In use, the device is thrown out and inserted into the ground, and can be pulled out easily and quickly.

Description

Technical Field

[0001] The present invention relates to the technical field of sports equipment, in particular to a javelin. Background Art

[0002] A javelin is a piece of sporting equipment used primarily in the spear throwing sport.

[0003] The javelin in the prior art is mainly composed of a gun shaft, a gun head and a grip. The gun shaft and the gun head are hollow structures. During assembly, a counterweight block needs to be added inside the gun head to ensure the overall center of gravity balance of the javelin.

[0004] However, current javelins have low strength and poor toughness, and after being thrown, due to inertia, they are inserted into the ground and require great force to be pulled out. Summary of the invention

[0005] In order to solve the above problems, the javelin provided by the present invention adopts a structure similar to the carbon fiber cloth of a fishing rod on the outside, and also has an auxiliary pulling-out device built into the gun head. By spraying high-pressure gas through reserved air holes, the javelin not only has high toughness and strength, but also can be easily pulled out after being inserted into the ground.

[0006] To achieve the above-mentioned invention object, the present invention provides a javelin made of synthetic material, comprising a gun barrel and a gun head made of synthetic material, a grip is provided in the middle of the gun barrel, the gun barrel and one end of the gun head are movably connected through a threaded rod, an internal thread is provided inside one end of the gun head to be connected with an external thread on the threaded rod, an injection device is provided inside the gun head, and the outer side of the gun barrel is wrapped with at least one structural layer of carbon fiber cloth.

[0007] According to a preferred technical solution, the handle is provided with an inner cavity, the inner cavity is provided with a capsule for containing liquid material, at least one sphere is placed in the capsule, and the bottom of the capsule and the bottom wall of the inner cavity are provided with Velcro for quick fixing and disassembly.

[0008] A preferred technical solution, the jet device includes a first air hole, a bolt hole, an ejection chamber and a high-pressure gas tank arranged on the side wall of the gun head, a firing pin is arranged at the front end of the ejection chamber, and a reset wrench is arranged on the firing pin. The reset wrench extends out of the outer wall of the gun head through the bolt hole, the bottom of the firing pin is fixedly connected to a spring, the bolt hole is inserted into the ejection chamber so that the firing pin is in a ready-to-fire state, and a release valve is arranged at the opening of the high-pressure gas tank. The firing pin hits the touch switch on the release valve, and the high-pressure gas in the high-pressure gas tank is quickly released.

[0009] According to a preferred technical solution, the ejection cavity is provided with four second air holes which are evenly arranged on the circumference.

[0010] According to a preferred technical solution, the number of the first air holes provided on the gun head is 3 and they are evenly arranged on the circumference.

[0011] According to a preferred technical solution, the protruding portion of the high-pressure gas tank is placed inside the hollow structure of the gun barrel after installation.

[0012] According to a preferred technical solution, a column is provided on the outside of the high-pressure gas tank.

[0013] According to a preferred technical solution, the columns are arranged around the high-pressure gas tank at 360° and there are at least three of them.

[0014] According to a preferred technical solution, the outer side of the column is provided with a taper and is made of an elastic soft material.

[0015] According to a preferred technical solution, the taper is greater than the taper of the inner wall of the gun head.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The overall material of the present invention is made of super-hard aluminum alloy material, wrapped with a carbon fiber cloth structure, which improves the overall strength and toughness of the javelin and allows the javelin to be thrown farther.

[0018] 2. The gun head of the present invention is made of stainless steel 304, which has better corrosion resistance, wear resistance and toughness.

[0019] 3. When the present invention is used, it can be thrown into the ground and pulled out easily and quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural front view of the present invention;

[0021] Figure 2 yes Figure 1 The structural front view of the middle handle;

[0022] Figure 3 is an enlarged structural diagram of the gun head in Example 1 of the present invention;

[0023] Figure 4 It is an enlarged view of the structure of the gun head in Example 2 of the present invention.

[0024] Reference numerals

[0025] In the figure, 1 is the gun barrel, 2 is the grip, 3 is the gun head, 4 is the jet device, 41 is the gas tank, 42 ​​is the second gas hole, 43 is the first gas hole, 44 is the spring, 45 is the firing pin, 46 is the reset wrench, 47 is the bolt hole, 48 is the bolt, 49 is the ejection chamber, 411 is the air release valve, 412 is the column, 5 is the threaded rod, and 51 is the internal thread. DETAILED DESCRIPTION

[0026] Example 1

[0027] like Figure 1-3 As shown, the present invention provides a javelin made of synthetic material, including a gun barrel 1 and a gun head 3, a grip 2 is provided in the middle of the gun barrel 1, the gun barrel 1 and one end of the gun head 3 are movably connected through a threaded rod 5, the gun barrel 1 is made of aluminum alloy, the outer side of the gun barrel 1 is wrapped with at least one structural layer of carbon fiber cloth, the javelin as a whole has a structure with pointed ends and a thick middle, and the center of gravity is set in the middle of the grip 2, which plays a role in increasing the overall strength and facilitating flight. Among them, a connecting part 21 is provided at one end of the handle 2 for detachable connection with one end of the gun barrel 1, an inner cavity 22 is provided in the handle 2, and a capsule 25 for containing liquid material is provided in the inner cavity 22. The liquid material is a viscous sodium silicate liquid, commonly known as water glass solution. At least one sphere 24 is placed in the viscous liquid in the capsule 25. In order to make better use of the center of gravity adjustment, the sphere 24 is made of lead material with a larger specific gravity. The lead sphere 24 in the viscous liquid material can not only adjust the center of gravity during the ascending stage of the javelin flight, but also can make no sound when moving backward; in order to enable quick fixation and installation, Velcro 23 is provided at the bottom of the capsule 25 and the bottom wall of the inner cavity 22 for quick fixation and disassembly.

[0028] The gun barrel 1 and the gun head 3 are both hollow structures. An internal thread 51 is provided at one end of the gun head 3 to be threadedly connected with an external thread on the threaded rod 5. An air jet device 4 is provided inside the gun head 3. In this embodiment, the overall material of the gun barrel 1 is made of aluminum alloy material, and the outer ring is made by mechanically wrapping carbon fiber cloth, which makes it lighter and more resilient than a gun barrel made of all aluminum alloy, and can reduce the deformation of the gun body after throwing, so that it can be thrown farther. The gun head 3 is made of stainless steel 304, which has good corrosion resistance, wear resistance and toughness compared to traditional steel or aluminum alloy gun heads, and is suitable for various harsh environments. In addition, stainless steel 304 also has good processing performance and is easy to weld, form and cut.

[0029] In this embodiment, the jet device 4 includes a first air hole 42, a bolt hole 44, an ejection chamber 49 and a high-pressure gas tank 41 arranged on the side wall of the gun head 3. The ejection chamber 49 and the high-pressure gas tank 41 are sealed and connected to each other and can be quickly replaced. The ejection chamber 49 and the high-pressure gas tank 41 are assembled and installed using a spiral structure. A firing pin 45 is provided at the front end of the ejection chamber 49. A reset wrench 46 is provided on the firing pin 45. The reset wrench 46 extends out of the outer wall of the gun head through the bolt hole 44. The bottom of the firing pin 45 is fixedly connected to the spring 44. The bolt hole 44 is inserted into the ejection chamber 49 so that the firing pin 45 is in a ready-to-fire state. A gas relief valve 411 is provided at the opening of the high-pressure gas tank 41. The firing pin 45 hits the touch switch on the gas relief valve 411, and the high-pressure gas in the high-pressure gas tank 41 is quickly released.

[0030] The working principle and process of the present invention are as follows:

[0031] Before the javelin is thrown, the user inserts the bolt hole 47 into the ejection chamber 49 to put the firing pin 45 in a ready-to-fire state. When the javelin is inserted into the ground, the bolt 48 is pulled out to make the firing pin 45 hit the valve on the air release valve 411 to open it, releasing the gas in the high-pressure gas tank 41. The gas is ejected through the second air hole 43 provided on the side wall of the ejection chamber 49 and the first air hole 42 of the gun head, and the gas released into the soil around the javelin head loosens the soil around the javelin head, making it easier to pull out the javelin. Then the reset wrench 46 is pulled to pull the firing pin 45 back and compress it to return the bolt 48 to its original position, thus completing the recovery and preparing for another firing state.

[0032] Example 2

[0033] This embodiment provides a javelin made of synthetic material, which is the same as the other structures of the embodiment 1, except that: Figure 4 As shown, in order to maintain stability and prevent the displacement of the high-pressure gas tank 41 during deflation, and to smoothly release the gas in the soil around the javelin head, a plurality of columns 412 are provided on the outside of the high-pressure gas tank 41. In this embodiment, the columns 412 are arranged 360° around the periphery of the high-pressure gas tank 413, and there are at least 3 of them. In order to facilitate installation and enable accurate positioning, the outside of the column 412 is provided with a taper and is made of an elastic soft material. Among them, in order to smoothly fix the high-pressure gas tank 413 in the ejection cavity 49 and let the firing pin 45 hit the touch switch on the deflation valve 411, the preferred technical solution is that the taper of the outer side of the cone column 412 is greater than the taper of the inner wall of the gun head 3, which plays a role in more accurate positioning.

[0034] The preferred specific implementation modes and embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above implementation modes and embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the concept of the present invention.

Claims

1. A javelin made of synthetic material, comprising a gun barrel (1) and a gun head (3) made of synthetic material, wherein a grip (2) is provided in the middle of the gun barrel (1), characterized in that: The gun barrel (1) and one end of the gun head (3) are movably connected via a threaded rod (5); an internal thread (51) is provided at one end of the gun head (3) and is connected to an external thread on the threaded rod (5); an injection device (4) is provided inside the gun head (3); and the outer side of the gun barrel (1) is wrapped with at least one structural layer of carbon fiber cloth.

2. The javelin made of synthetic material according to claim 1, characterized in that: The handle (2) is provided with an inner cavity (22), the inner cavity (22) is provided with a capsule (25) for containing liquid material, at least one sphere (24) is placed in the capsule (25), and the bottom of the capsule (25) and the bottom wall of the inner cavity (22) are provided with Velcro (23) for quick fixing and disassembly.

3. The javelin made of synthetic material according to claim 1, characterized in that: The jet device (4) comprises a first air hole (42), a bolt hole (44), an ejection chamber (49) and a high-pressure gas tank (41) arranged on the side wall of the gun head (3); a firing pin (45) is arranged at the front end of the ejection chamber (49); a reset wrench (46) is arranged on the firing pin (45); the reset wrench (46) extends out of the outer wall of the gun head through the bolt hole (44); the bottom of the firing pin (45) is fixedly connected to the spring (44); the bolt hole (44) is inserted into the ejection chamber (49) so that the firing pin (45) is in a ready-to-fire state; a gas relief valve (411) is arranged at the opening of the high-pressure gas tank (41); the firing pin (75) hits the touch switch on the gas relief valve (711), and the high-pressure gas in the high-pressure gas tank (71) is quickly released.

4. The javelin made of synthetic material according to claim 2, characterized in that: The ejection cavity (49) is provided with four second air holes (43) which are evenly arranged on the circumference.

5. The javelin made of synthetic material according to claim 4, characterized in that: The second air holes (43) arranged on the side wall of the gun head (3) are arranged in three numbers and are evenly arranged on the circumference.

6. The javelin made of synthetic material according to claim 1, characterized in that: The protruding portion of the high-pressure gas tank (41) is placed inside the hollow structure of the gun barrel (1) after installation.

7. The javelin made of synthetic material according to claim 1, characterized in that: A column (412) is provided outside the high-pressure gas tank (41).

8. The javelin made of synthetic material according to claim 7, characterized in that: The columns (412) are arranged around the high-pressure gas tank (41) at an angle of 360°, and there are at least three of them.

9. The javelin made of synthetic material according to claim 7, characterized in that: The outer side of the column (412) is provided with a taper, and is made of a soft material with elasticity.

10. The javelin made of synthetic material according to claim 9, characterized in that: The taper is greater than the taper of the inner wall of the gun head (3).

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