Folding hurdle frame

Abstract

The folding hurdle is characterized in that an inserting groove is formed in the top end of an inserting base, a matched wedge-shaped inserting block is arranged at the bottom of an inserting head, a step part is formed in the middle of the inserting base, the inserting head is fixed in a supporting stand column through a screw, and the bottom of the inserting head abuts against the step part; a plurality of limiting blocks extending in the radial direction are arranged on the bottom face of the inserting base, cross-shaped limiting grooves are formed in the surfaces of the supporting foot stands, and the limiting blocks are connected with the limiting grooves in an embedded mode. A multi-limiting structure is formed through self-locking matching of the inserting head and the wedge-shaped inserting block of the inserting base, axial fixing of the screw and supporting of the step part, and the connecting stability of the stand column and the connecting assembly is enhanced; the embedded design of the limiting block and the cross-shaped limiting groove effectively resists the horizontal impact force and the rotating torque, the anti-overturning capacity is improved, and meanwhile rapid disassembly and assembly and compact storage are achieved.

Description

Technical Field

[0001] This utility model relates to the field of sports equipment technology, and in particular to a folding hurdle. Background Technology

[0002] As crucial equipment for track and field training and competition, the structural stability, convenience, and safety of hurdles directly impact performance. Traditional hurdles often employ fixed or simple assembly structures, resulting in inconvenient assembly and disassembly, large transport volume, and easy loosening of component connections. Especially when frequently adjusting height or folding for storage, conventional connection structures often require multiple bolts or clips, making the process cumbersome. Furthermore, long-term use can lead to thread wear and clip failure, reducing overall stability and posing safety hazards. In addition, traditional support legs and uprights are often connected via flat butt joints or simple plug-in methods, lacking effective anti-rotation limiting designs. This makes them prone to shifting under athlete contact or external impact, affecting the hurdle's anti-overturning ability and failing to meet the demands of high-intensity training and competitions.

[0003] While some folding hurdle designs exist in existing technologies to address the aforementioned issues, their folding mechanisms are complex, and the connection points still rely on too many auxiliary parts, resulting in low assembly efficiency. Furthermore, the folded structure is loose and occupies a significant amount of space. Simultaneously, the fixing methods for the support legs generally lack multi-directional limiting mechanisms, making them difficult to adapt to different ground conditions and prone to deformation or breakage at the connection points due to uneven stress. Therefore, existing technologies require further improvement and enhancement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a folding hurdle frame to solve the problem that the folding structure of the hurdle frame in the prior art has obvious technical shortcomings.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a folding hurdle frame, comprising a supporting column, a connecting component, and supporting legs. The connecting component includes a plug-in base and a plug connector. The top of the plug-in base is provided with a slot, and the bottom of the plug connector is provided with a wedge-shaped plug that fits the slot. A stepped portion is formed in the middle of the plug-in base. The plug connector is fixed inside the supporting column by screws, and its bottom abuts against the stepped portion. The bottom surface of the plug-in base is provided with a plurality of radially extending limiting blocks, and the surface of the supporting legs is provided with a cross-shaped limiting groove. The limiting blocks are fitted and connected to the limiting groove.

[0006] In one embodiment of the present invention, a connecting post is further included, which axially penetrates the plug-in base and the plug-in connector, and the connecting post is coaxially arranged with the plug-in base and the plug-in connector.

[0007] In one embodiment of the present invention, an extension frame is further included, which is movably disposed inside the support leg with a telescopic structure.

[0008] In one embodiment of the present invention, the support frame is provided with positioning holes, and the extension frame is provided with a plurality of adjustment holes spaced apart along its length direction. The adjustment holes and the positioning holes are connected and fixed by fasteners.

[0009] In one embodiment of the present invention, the supporting column includes an inner column and an outer column that are nested together, and the bottom end of the inner column is supported on the step portion.

[0010] In one embodiment of this utility model, a quick connector and a crossbar are also included, and the top of the outer column is detachably connected to the crossbar through the quick connector.

[0011] In one embodiment of this utility model, the quick connector sidewall is provided with an inclined guide surface, and the crossbar is slidably positioned through the guide surface.

[0012] In one embodiment of the present invention, a horizontal tube is further included, the two ends of which are respectively fixedly connected to the two inner columns.

[0013] As described above, the folding hurdle frame of this utility model has the following beneficial effects: through the coordinated design of modular connecting components and limiting structures, it achieves the dual technical effects of efficient folding and stable support. During operation, the support column is fixed to the connector with screws and abuts against the stepped part of the connector base, forming an axial limit. Combined with the tight fit between the wedge-shaped plug and the slot, the connecting component has a self-locking characteristic when subjected to lateral impact, effectively preventing loosening due to vibration. During the unfolding of the support frame, the radial limiting block on the bottom surface of the connector base slides and engages along the cross-shaped limiting groove. Through geometric matching, the unfolding angle is automatically limited, ensuring both the stable unfolding state of the support frame and preventing over-unfolding that could lead to structural failure. When folded up, the support frame can slide in the opposite direction along the limiting groove and fold away. After the limiting block is released from its constraint, it remains in planar contact with the connector base, significantly reducing the overall thickness and space occupied. This design enables quick assembly and disassembly without the need for tools through a linkage mechanism of wedge-shaped insertion and limiting engagement. At the same time, the multi-directional limiting structure balances the force on each component, improving safety and structural durability. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a structural schematic diagram of the folding hurdle frame provided by this utility model;

[0016] Figure 2 A partial structural schematic diagram of the folding hurdle frame provided by this utility model;

[0017] Figure 3 A partial structural schematic diagram of the folding hurdle frame provided by this utility model;

[0018] Figure 4 A partial structural schematic diagram of the folding hurdle frame provided by this utility model;

[0019] Figure 5 A partial structural schematic diagram of the folding hurdle frame provided by this utility model;

[0020] Figure 6 This is a partial structural diagram of the folding hurdle frame provided by this utility model.

[0021] Component designation explanation

[0022] 1. Support column; 11. Inner column; 12. Outer column; 2. Connecting assembly; 21. Plug-in base; 22. Plug-in connector; 23. Slot; 24. Wedge-shaped plug; 25. Step section; 26. Limiting block; 27. Limiting groove; 28. Connecting column; 3. Support leg; 31. Positioning hole; 4. Extension frame; 41. Adjustment hole; 5. Quick connector; 51. Guide surface; 6. Crossbar; 7. Horizontal tube. Detailed Implementation

[0023] This utility model provides a folding hurdle frame. To make the purpose, technical solution and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments.

[0024] In the description of this utility model, it should be understood that the terms "up, down, left, right" and other indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and should not be construed as limiting this utility model; in addition, the terms "installation" and "connection" should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Please see Figures 1 to 6This utility model provides a folding hurdle frame, including a supporting column 1, a connecting assembly 2, and supporting legs 3. The connecting assembly 2 includes a plug-in base 21 and a plug-in connector 22. The top of the plug-in base 21 is provided with a slot 23, and the bottom of the plug-in connector 22 is provided with a wedge-shaped insert 24 that fits the slot 23. A stepped portion 25 is formed in the middle of the plug-in base 21. The plug-in connector 22 is fixed in the supporting column 1 by screws, and its bottom abuts against the stepped portion 25. The bottom surface of the plug-in base 21 is provided with a plurality of radially extending limiting blocks 26, and the surface of the supporting legs 3 is provided with a cross-shaped limiting groove 27. The limiting blocks 26 are fitted into the limiting grooves 27. When the limiting blocks 26 are embedded in different branches of the cross-shaped limiting grooves 27, the supporting legs 3 can rotate around the axis of the plug-in base 21 and be fixed at different angular positions, such as unfolding in a vertical or horizontal direction, to adapt to different scene requirements. More specifically, the four branches of the cross-shaped limiting groove 27 are symmetrically distributed, with each branch corresponding to a standard unfolding angle of the support leg 3. Transition grooves are provided between adjacent branches to facilitate smooth insertion of the limiting block 26 into the target groove during sliding switching. Through this design, the hurdle frame's support leg 3 can be completely retracted into the bottom of the plug-in base 21 when folded, and stable support can be achieved through the rapid positioning of the limiting block 26 and the limiting groove 27 when unfolded, significantly improving operational convenience and structural reliability.

[0026] Please see Figure 2 It also includes a connecting post 28 that axially penetrates the plug-in base 21 and the plug-in connector 22. The connecting post 28 is coaxially arranged with the plug-in base 21 and the plug-in connector 22. The connecting post 28 penetrates the plug-in base 21 and the plug-in connector 22 and is coaxially arranged to form an axially reinforced structure, further enhancing the axial stability of the plug-in part, distributing external loads, preventing deformation or displacement of the plug-in structure due to uneven stress, and improving the overall structural rigidity. Especially when subjected to lateral impact forces, the connecting post 28 can effectively distribute stress, prevent local deformation or loosening, and extend the service life of the hurdle frame. More specifically, it also includes a plastic retainer and a retaining spring. The retaining spring is sleeved on the connecting post 28, and the plastic retainer is disposed on the top of the connecting post 28. The top of the retaining spring abuts against the plastic retainer. The retaining spring provides basic elastic support, while the plastic retainer enhances the locking effect of the connecting post 28.

[0027] The system also includes an extension frame 4, which is movably mounted inside the support leg 3 using a telescopic structure. The telescopic extension frame 4 within the support leg 3 allows for flexible adjustment of the extension range of the support leg 3, adapting to different ground conditions and enhancing the versatility of the hurdles. Simultaneously, when folded, it can be completely retracted into the leg, reducing storage volume and improving portability, avoiding the inconvenience or limited applicability of traditional fixed legs due to their fixed length. Preferably, the support leg 3 has a positioning hole 31, and the extension frame 4 has multiple adjustment holes 41 spaced along its length. The adjustment holes 41 are connected and fixed to the positioning holes 31 by fasteners. The precise locking of the extension length of the extension frame 4 through the fasteners used in conjunction with the positioning holes 31 and adjustment holes 41 ensures the stability of the support leg 3 in different extended states, preventing slippage or retraction due to external forces and improving adjustment reliability.

[0028] The supporting column 1 comprises an inner column 11 and an outer column 12 that are nested together. The height of the supporting column 1 can be flexibly adjusted by adjusting the exposed length of the inner column 11 to adapt to different training or competition scenarios. The bottom end of the inner column 11 rests on the step portion 25. The nested design of the inner and outer columns 12, combined with the structure of the bottom end of the inner column 11 resting on the step portion 25, facilitates height adjustment and distributes the column load through the step portion 25, enhancing the load-bearing capacity, reducing stress concentration at the base of the column, and extending its service life.

[0029] It also includes a quick connector 5 and a crossbar 6. The top of the outer column 12 is detachably connected to the crossbar 6 via the quick connector 5. The detachable connection between the quick connector 5 and the crossbar 6 simplifies the installation process of the crossbar 6, allowing for quick assembly or disassembly without tools, facilitating transportation and storage, and meeting the flexible configuration requirements of the crossbar 6 in different training scenarios. The quick connector 5 has an inclined guide surface 51 on its side wall, through which the crossbar 6 achieves sliding positioning. The inclined guide surface 51 on the side wall of the quick connector 5 guides the crossbar 6 to slide and position, playing an automatic centering and guiding role, ensuring that the crossbar 6 is automatically aligned and locked during installation, avoiding manual adjustment errors, improving installation efficiency and connection accuracy, and reducing the risk of the crossbar 6 becoming loose. Specifically, the crossbar 6 is a segmented design, with one crossbar 6 on each of the left and right outer columns 12. Elastic ropes can be threaded through the quick connector 5 and the crossbar 6, and the tension of the elastic ropes and the guide surface 51 can be used to achieve quick repositioning of the crossbar 6. When the crossbar 6 is touched, the elastic cord automatically pulls the crossbar 6 back to its initial position through traction, reducing manual reset operations; the segmented structure allows the crossbar 6 to be adjusted in length or disassembled individually according to actual needs, further improving portability and adaptability.

[0030] The system also includes a horizontal tube 7, whose two ends are fixedly connected to two inner columns 11. The fixed connection of the two inner columns 11 to the two ends of the horizontal tube 7 forms a stable transverse frame structure, effectively balancing the forces on both sides of the hurdle, enhancing the overall resistance to lateral impacts, preventing deformation or displacement of the columns due to unilateral forces, and ensuring the structural integrity of the hurdle during high-intensity use. Specifically, the two ends of the horizontal tube 7 are welded to the inner columns 11, with the welding positions located in the lower middle region of the inner columns 11, achieving a firm connection through a continuous, full-circle weld. The weld joint is ground to eliminate stress concentration and coated with an anti-rust coating to improve weather resistance. The horizontal tube 7 and the inner columns 11 are made of the same metal material to ensure consistent mechanical properties at the weld joint. Furthermore, the diameter and wall thickness of the horizontal tube 7 are adapted to the load-bearing requirements of the hurdle, further optimizing the overall structural stability and lightweight characteristics.

[0031] In summary, the folding hurdle frame of this utility model significantly improves the ease of assembly and disassembly and overall stability through structural optimization. The wedge-shaped plug 24 at the bottom of the connector 22 engages with the slot 23 of the connector base 21, achieving quick connection using the inclined self-locking principle. Combined with the axial fixation of the connector 22 by screws and the support function of the step 25, a multi-limiting structure is formed, ensuring a tight connection between the support column 1 and the connecting component 2, effectively avoiding the problem of easy loosening of traditional bolt fasteners. After the radial limiting block 26 at the bottom of the connector base 21 engages with the cross-shaped limiting groove 27 of the support leg 3, multi-directional limiting constraints can resist horizontal impact forces and rotational torques, preventing displacement or overturning of the hurdle frame when subjected to external force collisions. Furthermore, this structure, through modular plug-in and limiting design, can be assembled without additional fasteners. When folding, only the plug-in and limiting constraints need to be released, allowing the components to be quickly separated and compactly stacked, significantly reducing storage volume and avoiding the wear and tear defects of complex hinge structures. The overall design balances quick assembly and disassembly, impact resistance, stability, and portability, making it suitable for use in high-intensity training and competitions where frequent adjustments and handling are required. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and possesses high industrial application value.

[0032] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A folding hurdle, characterized in that The system includes a support column (1), a connecting component (2), and a support leg (3). The connecting component (2) includes a plug-in base (21) and a plug-in connector (22). The plug-in base (21) has a slot (23) at its top and a wedge-shaped plug (24) at its bottom that fits the slot (23). A step (25) is formed in the middle of the plug-in base (21). The plug-in connector (22) is fixed in the support column (1) with screws and its bottom abuts against the step (25). The bottom surface of the plug-in base (21) has a plurality of radially extending limiting blocks (26). The surface of the support leg (3) has a cross-shaped limiting groove (27). The limiting blocks (26) are fitted into the limiting groove (27).

2. The folding hurdle according to claim 1, characterized in that It also includes a connecting post (28) that axially penetrates the plug-in base (21) and the plug-in connector (22), and the connecting post (28) is coaxially arranged with the plug-in base (21) and the plug-in connector (22).

3. The folding hurdle frame according to claim 1, characterized in that, It also includes an extension frame (4), which is movably disposed inside the support leg (3) with a telescopic structure.

4. The folding hurdle frame according to claim 3, characterized in that, The support frame (3) is provided with positioning holes (31), and the extension frame (4) is provided with multiple adjustment holes (41) at intervals along its length direction. The adjustment holes (41) and the positioning holes (31) are connected and fixed by fasteners.

5. The folding hurdle frame according to claim 1, characterized in that, The supporting column (1) includes an inner column (11) and an outer column (12) that are nested together, with the bottom end of the inner column (11) resting on the step portion (25).

6. The folding hurdle frame according to claim 5, characterized in that, It also includes a quick connector (5) and a crossbar (6), the top of the outer column (12) being detachably connected to the crossbar (6) via the quick connector (5).

7. The folding hurdle frame according to claim 5, characterized in that, The quick connector (5) has an inclined guide surface (51) on its side wall, and the crossbar (6) is slidably positioned through the guide surface (51).

8. The folding hurdle frame of claim 5, wherein, It also includes a horizontal tube (7), the two ends of which are fixedly connected to the two inner columns (11).

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