Joint anti-rotation connecting structure of trampoline

Abstract

The utility model discloses a connector anti-rotation connecting structure of a trampoline, and aims to overcome the defects that the connecting stability of a coil pipe of the trampoline is poor, and the connecting position is easy to rust. The anti-rotation device comprises an anti-rotation connector, the anti-rotation connector is connected with two adjacent ring pipes, the ring pipes and the anti-rotation connector are locked in the circumferential direction to achieve rotation prevention, the anti-rotation connector is provided with a through hole and a foot pipe insertion hole, the two adjacent ring pipes are inserted into the through hole from the two ends of the through hole respectively, and the foot pipe insertion hole is matched with the foot pipe in an inserted mode. The connector anti-rotation connecting structure of the trampoline is convenient to assemble and connect, the connecting stability of the trampoline is guaranteed, and the connecting position is not prone to rusting.

Description

Technical Field

[0001] The utility model relates to the technical field of trampolines, and more specifically to a joint anti-rotation connection structure of a trampoline. Background Art

[0002] Trampoline sports are extreme sports. With the development in recent years, trampoline sports have become more and more popular. At present, trampoline facilities for children to play are installed in many public places such as parks, communities, and amusement parks. Such trampoline facilities mainly include trampoline ring tubes, leg tubes, and trampoline surfaces connected to the ring tubes. Commonly used trampoline ring tube and leg tube connectors are short tube welding and T-type joints. Short tubes are welded on the ring tube, and the leg tubes are installed with the welded short tubes facing downward. The welding parts are treated with self-spray paint or electroplating of the entire pipe. The places treated with self-spray paint are prone to rust. The electroplating process seriously pollutes the environment. The welding parts are prone to cold welding. The welding parts are the key stress-bearing positions of the trampoline. Rust will cause the frame to collapse. T-type joints are usually welded by square tubes and round tubes. The welding surface treatments include spraying and electroplating. Spraying and electroplating processes seriously pollute the environment. Similarly, cold welding and rust will cause the frame to collapse. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings, the utility model provides a joint anti-rotation connection structure of a trampoline, which is convenient to assemble and connect, ensures the stability of the trampoline connection, and the connection position is not prone to rust.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a joint anti-rotation connection structure of a trampoline, including an anti-rotation joint, which connects two adjacent circle tubes, and the circle tubes and the anti-rotation joint are circumferentially locked to achieve anti-rotation. A through hole and a leg tube insertion hole are provided on the anti-rotation joint, and the two adjacent circle tubes are respectively inserted into the through hole from both ends of the through hole, and the leg tube insertion hole is adapted to fit the inserted leg tube.

[0005] The ring tube is connected end to end through the anti-rotation structure to form a frame structure, and the leg tube is connected to the anti-rotation joint to form the main frame of the trampoline. The leg tube supports the entire main frame. The ring tube and the anti-rotation joint are circumferentially locked to prevent the ring tube and the anti-rotation joint from rotating with each other. The ring tube is directly inserted into the through hole on the anti-rotation joint, and the leg tube is directly inserted into the leg tube jack. The assembly and connection are convenient and do not require welding, avoiding the rust caused by welding. The circumferential locking between the ring tube and the anti-rotation joint can improve the stability of the entire trampoline after connection.

[0006] The anti-rotation connection structure of the joint of the trampoline disclosed in the patent application is convenient to assemble and connect, thus ensuring the stability of the connection of the trampoline and preventing rust from easily appearing at the connection position.

[0007] Preferably, the through hole and the leg tube insertion hole are both polygonal structures, and the ring tube and the leg tube are both polygonal structures.

[0008] By setting the polygonal structure, an anti-rotation effect can be achieved.

[0009] Preferably, the coil tube includes a main body section and a necking section, the necking section is arranged at one end of the coil tube, and the necking section of one coil tube is adapted to be inserted into the main body section of another coil tube. A transition portion is formed between the necking section and the main body section of the coil tube, and a positioning rib is arranged on the inner wall of the through hole. The end of the main body section of one coil tube is inserted from one end of the through hole and pressed against one side of the positioning rib; the necking section of another adjacent coil tube is inserted from the other end of the through hole so that the transition portion presses against the other side of the positioning rib.

[0010] After the ring tube and the anti-rotation joint are connected, not only the plug-in connection between the ring tube and the through hole is realized, but also the plug-in connection between the ring tubes is realized, which greatly improves the stability of the connection. The positioning ribs are arranged on the inner wall of the through hole, which plays a positioning role and ensures that the two ring tubes can be plugged in place. Through this double plug-in structure, not only the connection strength is improved, but also the sealing and waterproof effect is improved, and the anti-rust performance is increased.

[0011] Preferably, a plurality of reinforcing ribs are circumferentially arranged at intervals on the inner wall of the through hole.

[0012] The provision of the reinforcing ribs can improve the tightness of the connection between the outer wall of the ring tube and the inner wall of the through hole, which is beneficial to improving the stability of the entire trampoline.

[0013] Preferably, the leg tube is connected to the net guard rod, and the net guard rod is connected and fixed to the anti-rotation joint.

[0014] The guardrail pole is used to install the trampoline's protective net, which plays a role in safety protection. The foot tube and anti-rotation joint are connected to the guardrail pole, so that the guardrail pole has two fixed points, and the support is stable and reliable.

[0015] Preferably, a connecting sleeve is provided on the leg tube, a positioning tube is inserted into the connecting sleeve, and the lower end of the protective net rod is inserted into the positioning tube.

[0016] The positioning tube is arranged between the connecting sleeve and the guard net rod to improve the tightness of the connection and prevent the guard net rod from being directly connected with the connecting sleeve, causing wear, surface damage and rust.

[0017] Preferably, a boss is provided on the outer wall of the anti-rotation joint, and the outer wall of the guard net rod fits closely with the surface of the boss.

[0018] When the guard net rod is locked, the outer wall of the guard net rod fits closely with the surface of the boss, so as to prevent the guard net rod from shaking and improve the safety of use.

[0019] Preferably, the anti-rotation joint is an integrally formed T-shaped structure.

[0020] The integrated anti-rotation joint has good structural strength, is easy to process, and its material is rust-proof, environmentally friendly, and anti-aging, and it can also be recycled.

[0021] Preferably, reinforcing convex rings are provided at both ends of the through hole on the anti-rotation joint and at the end of the leg tube insertion hole.

[0022] The provision of a reinforced convex ring can increase the strength of the anti-rotation joint, improve the reliability of the connection, and extend the service life of the product.

[0023] Preferably, the upper portion of the leg tube is narrowed to form an inserting section, the inserting section is adapted to be inserted into the leg tube insertion hole, and the reinforcing sleeve is adapted to be inserted into the inserting section.

[0024] The provision of the plug-in section facilitates the plug-in positioning of the leg tube and the leg tube plug-in hole, and the reinforcing sleeve improves the connection strength between the leg tube and the leg tube plug-in hole.

[0025] Compared with the prior art, the beneficial effects of the utility model are as follows: (1) the anti-rotation connection structure of the trampoline joint is easy to assemble and connect, which ensures the stability of the trampoline connection and makes it less likely for rust to appear at the connection position; (2) after the ring tube and the anti-rotation joint are connected, not only the plug-in connection between the ring tube and the through hole is realized, but also the plug-in connection between the ring tubes is realized. Through this double plug-in structure, not only the connection strength and stability are improved, but also the sealing and waterproof effect is improved, and the anti-rust performance is increased; (3) when the guard net rod is locked, the outer wall of the guard net rod fits with the surface of the boss to prevent the guard net rod from shaking, thereby improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the utility model.

[0027] Figure 2 It is an exploded view of the utility model.

[0028] Figure 3 It is a cross-sectional view of the utility model.

[0029] Figure 4 This is a schematic diagram of the connection of the legs of Example 2 of the present utility model.

[0030] In the figure: 1, anti-rotation joint, 2, ring tube, 3, through hole, 4, leg tube socket, 5, support pad, 6, stud, 7, leg tube, 8, plug-in section, 9, reinforcement sleeve, 10, reinforcement convex ring, 11, reinforcement convex rib, 12, main body section, 13, necking section, 14, transition section, 15, positioning rib, 16, net guard rod, 17, connecting sleeve, 18, positioning tube, 19, boss, 20, end plug, 21, convex ring. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0032] Embodiment 1: A joint anti-rotation connection structure of a trampoline (see attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 ), including an anti-rotation joint 1, the anti-rotation joint 1 is an integrally formed T-shaped structure, the anti-rotation joint 1 connects two adjacent ring tubes 2, and multiple ring tubes 2 are connected end to end through the anti-rotation joint 1 to form a frame-like structure. The ring tube 2 and the anti-rotation joint 1 are circumferentially locked to achieve anti-rotation, and a through hole 3 and a leg tube insertion hole 4 are provided on the anti-rotation joint 1. The two adjacent ring tubes 2 are respectively inserted into the through hole 3 from both ends of the through hole 3, and the leg tube insertion hole 4 is adapted to insert the leg tube 7. The upper part of the leg tube 7 is shrunken to form an insertion section 8, and the insertion section 8 is adapted to be inserted in the leg tube insertion hole 4, and the insertion section 8 is adapted to be inserted in the reinforcing sleeve 9. Reinforcement convex rings 10 are provided at both ends of the through hole 3 on the anti-rotation joint 1 and at the end of the leg tube insertion hole 4.

[0033] The through hole and the leg tube insertion hole 4 are both polygonal structures, and the ring tube 2 and the leg tube 7 are both polygonal structures. In this embodiment, the through hole and the leg tube insertion hole 4 are both regular octagonal structures, and the ring tube 2 and the leg tube 7 are both regular octagonal structures. A number of reinforcing convex ribs 11 are arranged at intervals on the inner wall of the through hole 3 in the circumferential direction. The ring tube 2 includes a main body section 12 and a necking section 13, and the necking section 13 is arranged at one end of the ring tube 2. A transition section 14 is formed between the necking section 13 and the main body section 12 on the ring tube, and the outer wall size of the necking section 13 matches the inner wall size of the main body section 12. Positioning ribs 15 are arranged on the inner wall of the through hole 3, and the positioning ribs 15 are arranged in a circle, and the positioning ribs 15 are arranged near one end of the through hole 3. The end of the main section 12 of one circle tube 2 is inserted from the end of the through hole 3 away from the positioning rib 15 and pressed against one side of the positioning rib 15; the necking section 13 of another adjacent circle tube 2 is inserted from the other end of the through hole 3 so that the transition section 14 presses against the other side of the positioning rib 15, and the necking section 13 of one circle tube 2 is adapted to be inserted into the main section 12 of the other circle tube 2.

[0034] The leg tube 7 is connected to the net rod 16, and the net rod 16 is connected and fixed to the anti-rotation joint 1. A connecting sleeve 17 is provided on the leg tube 7, and a positioning tube 18 is inserted in the connecting sleeve 17. The lower end of the net rod 16 is inserted in the positioning tube 18, and a drainage hole is provided at the bottom of the positioning tube 18. A boss 19 is provided on the outer wall of the anti-rotation joint 1, and the outer wall of the net rod 16 and the surface of the boss 19 are adapted to fit. The anti-rotation joint 1 and the net rod 16 are connected and fixed by screws.

[0035] Specifically, Figure 1 As shown, the anti-rotation joint 1 is a T-shaped structure, the through hole 3 is horizontally arranged on the anti-rotation joint 1, the leg tube insertion hole 4 is vertically arranged on the anti-rotation joint 1, and the two adjacent ring tubes 2 are respectively inserted into the through hole 3 from both ends of the through hole 3. The upper end of the leg tube 7 is inserted into the leg tube insertion hole 4. The lower end of the protective net rod 16 is connected to the connecting sleeve 17 on the leg tube 7, and the protective net rod 16 is fixed to the anti-rotation joint 1 by screws. The ring tube 2 and the leg tube 7 are both regular octagonal tubular structures.

[0036] like Figure 2 , Figure 3 As shown, the through hole 3 in the anti-rotation joint 1 is in a regular octagonal structure, and a plurality of reinforcing convex ribs 11 are arranged at intervals on the inner wall of the through hole 3 in the circumferential direction. After the ring tube 2 and the through hole 3 are inserted in place, the reinforcing convex ribs 11 can improve the tightness of the connection between the ring tube 2 and the through hole 3, thereby improving the stability of the connection structure. Reinforcing convex rings 10 are arranged at both ends of the through hole 3 and the end of the leg tube insertion hole 4 on the anti-rotation joint 1. Positioning convex ribs are arranged in the through hole 3, and the positioning ribs 15 protrude from the inner wall of the through hole 3. The positioning ribs 15 are arranged in a circle, and the positioning ribs 15 are arranged near one end of the through hole 3. The shrinking section 13 of one ring tube 2 is inserted into the through hole 3 from the open end of the through hole 3 near the positioning rib 15 until the transition section 14 between the shrinking section 13 and the main section 12 hits one side of the positioning rib 15. The end of the main section 12 of the other ring tube 2 is inserted into the through hole 3 from the other open end of the through hole 3 until the end of the main section 12 hits the other side of the positioning rib 15. At this time, the necking section 13 of one circle tube 2 is inserted into the main section 12 of the other circle tube 2, so that the necking section 13 and the main section 12 are adapted and inserted together. After the circle tube 2 and the anti-rotation joint 1 are connected, not only the insertion connection between the circle tube 2 and the through hole 3 is realized, but also the insertion connection between the circle tube 2 and the circle tube 2 is realized, which greatly improves the stability of the connection. The positioning rib 15 is arranged on the inner wall of the through hole 3, which plays a positioning role and ensures that the two circle tubes 2 can be inserted in place. Through this double insertion structure, not only the connection strength is improved, but also the sealing and waterproof effect is improved, and the rust-proof performance is increased.

[0037] A connecting sleeve 17 is welded near the lower part of the leg tube 7. The connecting sleeve 17 is connected from top to bottom. A positioning tube 18 is adapted to be mounted in the connecting sleeve 17. A flange is arranged at the upper end of the positioning tube 18. The flange is supported on the upper end of the connecting sleeve 17. The upper end of the positioning tube 18 is open and the lower end is closed. A drainage hole is arranged at the bottom of the positioning tube 18 to facilitate drainage and prevent rust. The lower end of the guard net rod 16 is adapted to be inserted into the positioning tube 18. A boss 19 is arranged on the outer wall of the anti-rotation joint 1. The surface of the boss 19 is a concave arc structure and is adapted to the outer wall of the guard net rod 16. A screw is connected between the guard net rod 16 and the anti-rotation joint 1. The screw passes through the guard net rod 16, the plug-in section 8 of the leg tube 7, the reinforcement sleeve 9 and the anti-rotation joint 1. The nut end of the screw is pressed against the outer wall of the guard net rod 16. The other end of the screw is connected to a gasket and a locking nut. The gasket is tightly installed between the outer wall of the anti-rotation joint 1 and the locking nut.

[0038] The ring tube 2 is connected end to end through the anti-rotation structure to form a frame structure, and the leg tube 7 is connected to the anti-rotation joint 1, thereby forming the main frame of the trampoline. The leg tube 7 supports the entire main frame. The ring tube 2 and the anti-rotation joint 1 are circumferentially locked to prevent the ring tube 2 and the anti-rotation joint 1 from rotating relative to each other. The ring tube 2 is directly inserted into the through hole 3 on the anti-rotation joint 1, and the leg tube 7 is directly inserted into the leg tube insertion hole 4. The assembly and connection are convenient and do not require welding, thus avoiding the rusting caused by welding. The circumferential locking between the ring tube 2 and the anti-rotation joint 1 can improve the stability of the entire trampoline after connection.

[0039] Embodiment 2: A joint anti-rotation connection structure of a trampoline (see attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 ), including an anti-rotation joint 1, the anti-rotation joint 1 is an integrally formed T-shaped structure, the anti-rotation joint 1 connects two adjacent ring tubes 2, and multiple ring tubes 2 are connected end to end through the anti-rotation joint 1 to form a frame-like structure. The ring tube 2 and the anti-rotation joint 1 are circumferentially locked to achieve anti-rotation, and a through hole 3 and a leg tube insertion hole 4 are provided on the anti-rotation joint 1. The two adjacent ring tubes 2 are respectively inserted into the through hole 3 from both ends of the through hole 3, and the leg tube insertion hole 4 is adapted to insert the leg tube 7. The upper part of the leg tube 7 is shrunken to form an insertion section 8, and the insertion section 8 is adapted to be inserted in the leg tube insertion hole 4, and the insertion section 8 is adapted to be inserted in the reinforcing sleeve 9. Reinforcement convex rings 10 are provided at both ends of the through hole 3 on the anti-rotation joint 1 and at the end of the leg tube insertion hole 4.

[0040] The through hole and the leg tube insertion hole 4 are both polygonal structures, and the ring tube 2 and the leg tube 7 are both polygonal structures. In this embodiment, the through hole and the leg tube insertion hole 4 are both regular octagonal structures, and the ring tube 2 and the leg tube 7 are both regular octagonal structures. A number of reinforcing convex ribs 11 are arranged at intervals on the inner wall of the through hole 3 in the circumferential direction. The ring tube 2 includes a main body section 12 and a necking section 13, and the necking section 13 is arranged at one end of the ring tube 2. A transition section 14 is formed between the necking section 13 and the main body section 12, and the outer wall size of the necking section 13 matches the inner wall size of the main body section 12. Positioning ribs 15 are arranged on the inner wall of the through hole 3, and the positioning ribs 15 are arranged in a circle, and the positioning ribs 15 are arranged near one end of the through hole 3. The end of the main section 12 of one circle tube 2 is inserted from the end of the through hole 3 away from the positioning rib 15 and pressed against one side of the positioning rib 15; the necking section 13 of another adjacent circle tube 2 is inserted from the other end of the through hole 3 so that the transition section 14 presses against the other side of the positioning rib 15, and the necking section 13 of one circle tube 2 is adapted to be inserted into the main section 12 of the other circle tube 2.

[0041] The leg tube 7 is connected to the net rod 16, and the net rod 16 is connected and fixed to the anti-rotation joint 1. A connecting sleeve 17 is provided on the leg tube 7, and a positioning tube 18 is inserted in the connecting sleeve 17. The lower end of the net rod 16 is inserted in the positioning tube 18, and a drainage hole is provided at the bottom of the positioning tube 18. A boss 19 is provided on the outer wall of the anti-rotation joint 1, and the outer wall of the net rod 16 and the surface of the boss 19 are adapted to fit. The anti-rotation joint 1 and the net rod 16 are connected and fixed by screws.

[0042] Specifically, Figure 1 As shown, the anti-rotation joint 1 is a T-shaped structure, the through hole 3 is horizontally arranged on the anti-rotation joint 1, the leg tube insertion hole 4 is vertically arranged on the anti-rotation joint 1, and the two adjacent ring tubes 2 are respectively inserted into the through hole 3 from both ends of the through hole 3. The upper end of the leg tube 7 is inserted into the leg tube insertion hole 4. The lower end of the protective net rod 16 is connected to the connecting sleeve 17 on the leg tube 7, and the protective net rod 16 is fixed to the anti-rotation joint 1 by screws. The ring tube 2 and the leg tube 7 are both regular octagonal tubular structures.

[0043] like Figure 2 , Figure 3 As shown, the through hole 3 in the anti-rotation joint 1 is in a regular octagonal structure, and a plurality of reinforcing convex ribs 11 are arranged at intervals on the inner wall of the through hole 3 in the circumferential direction. After the ring tube 2 and the through hole 3 are inserted in place, the reinforcing convex ribs 11 can improve the tightness of the connection between the ring tube 2 and the through hole 3, thereby improving the stability of the connection structure. Reinforcing convex rings 10 are arranged at both ends of the through hole 3 and the end of the leg tube insertion hole 4 on the anti-rotation joint 1. Positioning convex ribs are arranged in the through hole 3, and the positioning ribs 15 protrude from the inner wall of the through hole 3. The positioning ribs 15 are arranged in a circle, and the positioning ribs 15 are arranged near one end of the through hole 3. The shrinking section 13 of one ring tube 2 is inserted into the through hole 3 from the open end of the through hole 3 near the positioning rib 15 until the transition section 14 between the shrinking section 13 and the main section 12 hits one side of the positioning rib 15. The end of the main section 12 of the other ring tube 2 is inserted into the through hole 3 from the other open end of the through hole 3 until the end of the main section 12 hits the other side of the positioning rib 15. At this time, the necking section 13 of one circle tube 2 is inserted into the main section 12 of the other circle tube 2, so that the necking section 13 and the main section 12 are adapted and inserted together. After the circle tube 2 and the anti-rotation joint 1 are connected, not only the insertion connection between the circle tube 2 and the through hole 3 is realized, but also the insertion connection between the circle tube 2 and the circle tube 2 is realized, which greatly improves the stability of the connection. The positioning rib 15 is arranged on the inner wall of the through hole 3, which plays a positioning role and ensures that the two circle tubes 2 can be inserted in place. Through this double insertion structure, not only the connection strength is improved, but also the sealing and waterproof effect is improved, and the rust-proof performance is increased.

[0044] A connecting sleeve 17 is welded near the lower part of the leg tube 7. The connecting sleeve 17 is connected from top to bottom. A positioning tube 18 is adapted to be mounted in the connecting sleeve 17. A flange is arranged at the upper end of the positioning tube 18. The flange is supported on the upper end of the connecting sleeve 17. The upper end of the positioning tube 18 is open and the lower end is closed. A drainage hole is arranged at the bottom of the positioning tube 18 to facilitate drainage and prevent rust. The lower end of the guard net rod 16 is adapted to be inserted into the positioning tube 18. A boss 19 is arranged on the outer wall of the anti-rotation joint 1. The surface of the boss 19 is a concave arc structure and is adapted to the outer wall of the guard net rod 16. A screw is connected between the guard net rod 16 and the anti-rotation joint 1. The screw passes through the guard net rod 16, the plug-in section 8 of the leg tube 7, the reinforcement sleeve 9 and the anti-rotation joint 1. The nut end of the screw is pressed against the outer wall of the guard net rod 16. The other end of the screw is connected to a gasket and a locking nut. The gasket is tightly installed between the outer wall of the anti-rotation joint 1 and the locking nut.

[0045] like Figure 4 As shown, an end plug 20 is inserted at the bottom of the leg tube 7, and the end plug 20 is a regular octagonal structure. The end plug 20 is inserted in the leg tube 7 and can be locked circumferentially. A convex ring 21 is provided on the lower edge of the end plug 20, and the convex ring 21 is pressed on the lower end surface of the leg tube 7. The end plug 20 is threadedly connected to the support pad 5, and a stud 6 is provided on the support pad 5. The support pad 5 is supported on the ground, and the screw is threadedly connected to the end plug 20. The support height is adjusted by rotating the support pad 5, thereby realizing the adjustment of the support height of the leg tube 7, which is convenient for the leveling operation of the entire trampoline.

[0046] The ring tube 2 is connected end to end through the anti-rotation structure to form a frame structure, and the leg tube 7 is connected to the anti-rotation joint 1, thereby forming the main frame of the trampoline. The leg tube 7 supports the entire main frame. The ring tube 2 and the anti-rotation joint 1 are circumferentially locked to prevent the ring tube 2 and the anti-rotation joint 1 from rotating relative to each other. The ring tube 2 is directly inserted into the through hole 3 on the anti-rotation joint 1, and the leg tube 7 is directly inserted into the leg tube insertion hole 4. The assembly and connection are convenient and do not require welding, thus avoiding the rusting caused by welding. The circumferential locking between the ring tube 2 and the anti-rotation joint 1 can improve the stability of the entire trampoline after connection.

[0047] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A trampoline joint anti-rotation connection structure, characterized in that: The invention comprises an anti-rotation joint, which connects two adjacent circle tubes. The circle tubes and the anti-rotation joint are circumferentially locked to achieve anti-rotation. A through hole and a leg tube insertion hole are arranged on the anti-rotation joint. The two adjacent circle tubes are respectively inserted into the through hole from both ends of the through hole. The leg tube insertion hole is adapted to insert the leg tube. The circle tube comprises a main body section and a shrinking section. The shrinking section is arranged at one end of the circle tube. The shrinking section of one circle tube is adapted to be inserted into the main body section of the other circle tube.

2. The anti-rotation connection structure of a trampoline joint according to claim 1, characterized in that: The through hole and the leg tube insertion hole are both polygonal structures, and the ring tube and the leg tube are both polygonal structures.

3. The anti-rotation connection structure of a trampoline joint according to claim 1, characterized in that: A transition portion is formed between the necking section and the main section of the circle tube, and a positioning rib is arranged on the inner wall of the through hole. The end of the main section of a circle tube is inserted from one end of the through hole and pressed against one side of the positioning rib; the necking section of another adjacent circle tube is inserted from the other end of the through hole so that the transition portion presses against the other side of the positioning rib.

4. The anti-rotation connection structure of a trampoline joint according to claim 1, characterized in that: A plurality of reinforcing ribs are arranged at intervals on the inner wall of the through hole in a circumferential direction.

5. The anti-rotation connection structure of a trampoline joint according to claim 1, characterized in that: The leg tube is connected to the guard net rod, and the guard net rod is connected and fixed to the anti-rotation joint.

6. The anti-rotation connection structure of a trampoline joint according to claim 5, characterized in that: A connecting sleeve is arranged on the leg pipe, a positioning cylinder is inserted in the connecting sleeve, and the lower end of the guard net rod is inserted in the positioning cylinder.

7. The anti-rotation connection structure of a trampoline joint according to claim 5, characterized in that: A boss is arranged on the outer wall of the anti-rotation joint, and the outer wall of the guard net rod is fitted with the surface of the boss.

8. The anti-rotation connection structure of a trampoline joint according to claim 1, characterized in that: The anti-rotation joint is an integrally formed T-shaped structure.

9. The anti-rotation connection structure of a trampoline joint according to any one of claims 1 to 8, characterized in that: Both ends of the through hole on the anti-rotation joint and the end of the leg pipe insertion hole are provided with reinforcing convex rings.

10. The anti-rotation connection structure of a trampoline joint according to any one of claims 1 to 8, characterized in that: The upper part of the leg tube is shrunken to form an inserting section, and the inserting section is adapted to be inserted in the inserting hole of the leg tube, and the reinforcing sleeve is adapted to be inserted in the inserting section.

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