A hurdle frame for physical education teaching

Abstract

The utility model discloses a hurdle frame for physical education teaching, and relates to the technical field of physical education teaching tools. The hurdle frame for physical education teaching comprises a cross bar, and also comprises: connecting curved rods are provided at both ends of the cross bar, the connecting curved rod has a parallel end and a vertical end, the vertical end of the connecting curved rod is connected to a support rod, the other end of the support rod is connected to a base, and a cavity is provided in the base; a buffer mechanism, the buffer mechanism is provided in the cavity, and the buffer mechanism can buffer the collision of the support rod; a fixing mechanism, the fixing mechanism is provided between the connecting curved rod and the cross bar, the fixing mechanism is used to fix the cross bar, and the fixing mechanism can cancel the fixing of the cross bar when the cross bar is subjected to an external force. The utility model can set the buffer mechanism inside the base by setting a first rotating rod and a second rotating rod, and a first spring used in conjunction, so as to avoid causing a trip to the practitioner and improve the safety of use.

Description

Technical Field

[0001] The utility model relates to the technical field of sports teaching tools, in particular to a hurdle frame for sports teaching. Background Art

[0002] In hurdle teaching, beginners often knock down the hurdle frame during training. Since the practitioners run very fast, once a collision with the hurdle frame occurs, it will cause serious injuries.

[0003] The Chinese utility model patent with announcement number CN215691660U discloses a buffer-type hurdle frame for physical education teaching. By arranging sleeves on both sides of the support rod, and arranging a buffer device in the sleeve that uses a spring to shrink or extend, the effect of reducing the damage caused by collision to the practitioner is achieved. At the same time, a baffle fixed by magnetic attraction is provided. When the practitioner collides with the baffle, the baffle can be driven to fall off to avoid damage to the baffle or injury to the practitioner.

[0004] However, a triangular area is formed between the buffer structure and the support rod of the device. When the practitioner is training, the limbs may be hooked into the triangular area, resulting in falls or sprains. In addition, when the springs on different sides of the support rod have different elasticities due to frequent use, the support rod will tilt, affecting its use. Utility Model Content

[0005] The utility model provides a hurdle frame for physical education teaching, which has the advantage that a buffer structure is located inside the device and will not cause tripping to the user, so as to solve the problems raised in the background technology.

[0006] In order to achieve the purpose that the hurdle structure is located inside the device and does not cause tripping to the user, the utility model provides the following technical solutions: a hurdle frame for physical education teaching, including a cross bar, and also including connecting bent rods at both ends of the cross bar, the connecting bent rod having a parallel end and a vertical end, the vertical end of the connecting bent rod is connected to a support rod, and the other end of the support rod is connected to a base, and a cavity is opened in the base; a buffer mechanism, the buffer mechanism is arranged in the cavity, and the buffer mechanism can buffer the collision of the support rod; the fixing mechanism is arranged between the connecting bent rod and the cross bar, the fixing mechanism is used to fix the cross bar, and the fixing mechanism can cancel the fixation of the cross bar when the cross bar is subjected to external force.

[0007] The cam is an axially oriented member formed with a first end of a first lever and a second end of a second lever, and the cam is adapted to engage the first end of the first lever and engage the second end of the second lever to engage the first end of the second lever.

[0008] As a preferred technical solution of the utility model, the outer circumference of the first rotating shaft is provided with grooves symmetrically about the axis center of the first rotating shaft, and the opposite sides of the first rotating rod and the second rotating rod can be respectively embedded in the grooves.

[0009] As a preferred technical solution of the utility model, an elastic rod is fixedly provided at the bottom end of the support rod, and the other end of the elastic rod is fixed to the bottom surface of the base.

[0010] As an optimal technical solution of the present invention, a boss is fixedly provided at one end of the connecting bent rod close to the cross rod, the diameter of the boss is smaller than the diameter of the connecting bent rod, the circular surface of the boss is provided with a accommodating cavity, and the end of the accommodating cavity away from the boss is a diameter-enlarged end; the fixing mechanism includes an enclosing piece, which is attached to the outer circumference of the boss, a connecting piece is fixedly provided at one end of the bent rod close to the boss, one end of the enclosing piece is hinged to the connecting piece, a movable column is provided in the accommodating cavity, a connecting rod is hingedly provided on the outer circumference of the movable column, and the other end of the connecting rod is hinged to the enclosing piece; a through groove is provided on the outer surface of the boss, which passes through the accommodating cavity, and the connecting rod can move in the through groove; a baffle is fixedly provided at one end of the movable column away from the cross rod, and a second spring is provided between the outer circumference of the movable column and the inner wall of the diameter-enlarged end of the accommodating cavity, and the baffle can prevent the second spring from detaching from the movable column.

[0011] As a preferred technical solution of the utility model, an inserting cavity is provided at one end of the connecting bent rod close to the supporting rod, and the supporting rod can be inserted into the inserting cavity.

[0012] As a preferred technical solution of the utility model, an opening is provided at the upper end of the cavity corresponding to the support rod, and the support rod can move in the opening.

[0013] As a preferred technical solution of the utility model, the outer circumference of the crossbar is provided with a protective sleeve, and the protective sleeve plays a buffering role.

[0014] Compared with the prior art, the utility model provides a hurdle frame for physical education teaching, which has the following

[0015] Beneficial effects:

[0016] 1. The hurdle frame for physical education teaching can arrange the buffer mechanism inside the base by arranging the first rotating rod and the second rotating rod and the first spring used in conjunction with them, thereby avoiding tripping of the practitioner and improving the safety of use.

[0017] 2. The hurdle frame for physical education teaching can keep the support rod in a vertical state when stationary by providing a groove used in conjunction with the first rotating rod and the second rotating rod, and an elastic rod capable of bending and stretching, and will not tilt due to a change in the elasticity of the first spring.

[0018] 3. The hurdle frame for physical education teaching can cancel the fixing effect on the crossbar when the crossbar is hit by a collision by providing the enclosing piece and the second spring used in conjunction with the crossbar, thereby preventing the user from being injured when colliding with the crossbar. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the buffer mechanism of the utility model;

[0021] Figure 3 This is an exploded view of the buffer mechanism of the utility model;

[0022] Figure 4 This is a schematic diagram of the connecting bent rod of the utility model;

[0023] Figure 5 This is a cross-sectional view of the connecting bent rod of the utility model;

[0024] Figure 6 This is a cross-sectional view of the fixed structure of the utility model;

[0025] Figure 7 It is a side view of the boss of the utility model;

[0026] Figure 8 It is a schematic diagram of the enclosure sheet of the utility model being opened.

[0027] In the figure: 1. cross bar; 2. connecting bent rod; 21. plug-in cavity; 22. boss; 221. through groove; 23. accommodating cavity; 3. support rod; 4. base; 5. opening; 6. cavity; 7. elastic rod; 8. first rotating shaft; 81. groove; 9. toggle rod; 91. supporting member; 10. second rotating shaft; 11. first rotating rod; 111. fixed block; 12. second rotating rod; 121. extension block; 13. first spring; 14. enclosure sheet; 15. movable column; 151. blocking sheet; 16. second spring; 17. connecting rod; 18. connecting member. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-Figure 4 The utility model discloses a hurdle frame for physical education teaching, including a crossbar 1 for crossing over hurdles, both ends of the crossbar 1 are provided with connecting bent rods 2, the connecting bent rod 2 has a parallel end and a vertical end, the parallel end of the connecting bent rod 2 is provided with a fixing mechanism, the fixing mechanism is used to fix the crossbar 1, and can cancel the fixing of the crossbar 1 when the crossbar 1 is subjected to external force, the vertical end of the connecting bent rod 2 is connected with a support rod 3, the support rod 3 is preferably cylindrical to avoid corners from causing harm to the practitioner, the other end of the support rod 3 is connected with a base 4, a cavity 6 is opened in the base 4, a buffer mechanism is provided in the cavity 6, and the buffer mechanism can buffer the collision of the support rod 3.

[0030] In this embodiment, when the practitioner accidentally collides with the support rod 3, the buffer mechanism can alleviate the impact on the support rod 3, thereby reducing the damage to the practitioner. When the practitioner's body or limbs trip over the cross bar 1 when hurdling, the two ends of the cross bar 1 will squeeze the fixing mechanism, thereby deforming the fixing mechanism and canceling the fixation of the cross bar 1.

[0031] Combination Figure 1 , Figure 2 , Figure 3A first rotating shaft 8 is fixedly provided at one end of the support rod 3 away from the connecting bent rod 2, and the first rotating shaft 8 passes through the support rod 3. Both ends of the first rotating shaft 8 are rotatably connected to the side of the base 4. A toggle rod 9 in the buffer mechanism is horizontally fixed on the first rotating shaft 8. The toggle rod 9 is a structure symmetrical about the axis of the first rotating shaft 8, and the length line of the toggle rod 9 is perpendicular to the axis of the first rotating shaft 8. A first rotating rod 11 and a second rotating rod 12 in the shape of a "7" are vertically provided on the same side of the first rotating shaft 8 as the toggle rod 9. The first rotating rod 11 and the second rotating rod 12 have the same structure, and the first rotating rod 11 and the second rotating rod 12 are symmetrical about the axis of the first rotating shaft 8. A second rotating shaft 10 is fixedly provided on the side of the cavity 6 close to the toggle rod 9, and the lower ends of the first rotating rod 11 and the second rotating rod 12 are rotatably connected to the second rotating shaft 10.

[0032] Furthermore, a fixing block 111 is provided at the head of the first rotating rod 11 and the second rotating rod 12, and a first spring 13 is fixedly provided between the fixing blocks 111. In addition, an extension block 121 can be fixedly provided at the fixing block 111 of the first rotating rod 11 or the second rotating rod 12 and close to one side of the other fixing block 111, and the first spring 13 is installed between the fixing block 111 and the extension block 121, so that the force on the first spring 13 is along its axial direction, thereby increasing the service life of the first spring 13.

[0033] In addition, both ends of the toggle rod 9 are provided with abutting pieces 91 , and the abutting pieces 91 are in contact with the surfaces of the two fixing blocks 111 which are away from each other, thereby playing a role of abutting against the fixing blocks 111 .

[0034] Furthermore, a groove 81 is symmetrically formed on the outer circumference of the first rotating shaft 8 about the axis center of the first rotating shaft 8 , and opposite sides of the first rotating rod 11 and the second rotating rod 12 can be respectively embedded in the groove 81 when both are stationary.

[0035] In this embodiment, when the buffer mechanism is stationary, the first spring 13 can generate a thrust on the fixed blocks 111 on the first rotating rod 11 and the second rotating rod 12, so that the first rotating rod 11 and the second rotating rod 12 are tightly embedded in the groove 81, thereby keeping the buffer mechanism stable. When the practitioner accidentally hits the support rod 3, the support rod 3 will rotate around the first rotating shaft 8, so that the supporting member 91 pushes the first rotating rod 11 or the second rotating rod 12 to rotate. At this time, the first spring 13 located between the two fixed blocks 111 will be compressed, thereby buffering the collision. After that, the first rotating rod 11 or the second rotating rod 12 will be reset under the action of the first spring 13 and embedded in the groove 81 again, thereby resetting the support rod 3.

[0036] Combination Figure 2In order to improve the stability of the support rod 3, an elastic rod 7 is fixed at the bottom end of the support rod 3, and the other end of the elastic rod 7 is fixed to the bottom surface of the base 4. The elastic rod 7 is preferably made of glass fiber composite material so that the elastic rod 7 can bend and withstand a certain tension, thereby reducing the pressure on the first spring 13 and improving the buffering effect.

[0037] Combination Figure 4 , Figure 5 In order to install the fixing structure, a boss 22 is fixedly provided at one end of the connecting bent rod 2 close to the cross bar 1. The diameter of the boss 22 is smaller than the diameter of the connecting bent rod 2, so that a fixing structure can be set at the step between the connecting bent rod 2 and the boss 22. The circular surface of the boss 22 is provided with an accommodating cavity 23, and the end of the accommodating cavity 23 away from the boss 22 is an enlarged diameter end.

[0038] Combination Figure 5-Figure 8 The fixed structure includes an enclosure sheet 14, which is attached to the outer circumference of the boss 22. At least two enclosure sheets 14 are provided. When the enclosure sheets 14 are combined, they are cylindrical. A connecting piece 18 is fixedly provided at the step portion between the connecting bent rod 2 and the boss 22. One end of the enclosure sheet 14 is hinged to the connecting piece 18. A movable column 15 is also provided in the accommodating cavity 23. A connecting rod 17 is hinged to the outer circumference of the movable column 15. The other end of the connecting rod 17 is hinged to the enclosure sheet 14. At the same time, a through groove 221 that penetrates to the accommodating cavity 23 is also provided on the outer surface of the boss 22, and the connecting rod 17 can move in the through groove 221.

[0039] In this embodiment, when the movable column 15 moves out of the accommodating cavity 23, it will drive the connecting rod 17 to run, and the other end of the connecting rod 17 will push the enclosure sheet 14 to rotate around the connecting piece 18, so that the end of the enclosure sheet 14 away from the connecting piece 18 will open outward, and when the enclosure sheet 14 rotates 90°, the enclosure sheet 14 completely loses its fixing effect on the cross bar 1. When the movable column 15 moves into the accommodating cavity 23, the end of the enclosure sheet 14 away from the connecting piece 18 will retract inward, thereby forming a cylindrical structure and fixing the cross bar 1.

[0040] Combination Figure 5 In order to keep the enclosure sheet 14 in a retracted state at all times when it is stationary, a baffle 151 is fixedly provided at the end of the movable column 15 away from the cross bar 1, and a second spring 16 is provided between the outer circumference of the movable column 15 and the inner wall of the enlarged diameter end of the accommodating cavity 23. The baffle 151 can prevent the second spring 16 from detaching from the movable column 15. The second spring 16 abuts against the baffle 151 and applies a force to the movable column 15 to move into the accommodating cavity 23, thereby retracting the enclosure sheet 14, and after the enclosure sheet 14 is opened by an external force, it can also be reset to the retracted state.

[0041] Combination Figure 5In order to facilitate the installation of the connecting bent rod 2, an inserting cavity 21 is opened at one end of the connecting bent rod 2 close to the support rod 3, and the support rod 3 can be inserted into the inserting cavity 21, so that the connecting bent rod 2 and the support rod 3 are connected to form a whole.

[0042] Combination Figure 1 , Figure 2 In order to facilitate the movement of the support rod 3, an opening 5 is opened at the upper end of the cavity 6 corresponding to the support rod 3, so that the support rod 3 has space to rotate.

[0043] In order to prevent injuries to the practitioner's limbs when they collide with the crossbar 1, a protective sleeve is provided on the outer circumference of the crossbar 1. The protective sleeve can be made of sponge material or rubber material, so that the protective sleeve can play a buffering role in the event of a collision.

[0044] The working principle and use process of the utility model are as follows: during use, when the practitioner accidentally collides with the support rod 3 during hurdle training, the support rod 3 will drive the toggle rod 9 to rotate together. At this time, the supporting member 91 can push the first rotating rod 11 or the second rotating rod 12, thereby squeezing the first spring 13 located between the fixed blocks 111, and the elastic rod 7 will also bend, further buffering the collision, thereby reducing the impact of the collision on the practitioner, and then the support rod 3 will be reset under the action of the first spring 13, and the first rotating rod 11 or the second rotating rod 12 will be re-embedded in the groove 81, and under the action of the elastic rod 7, the support rod 3 will be in a stable state.

[0045] When the practitioner collides with the crossbar 1 during hurdle training, the two ends of the crossbar 1 will produce a propulsion effect on the enclosure sheet 14. At this time, the enclosure sheet 14 can pull the movable column 15 to move out of the accommodating cavity 23 through the connecting rod 17 and compress the second spring 16, so that the enclosure sheet 14 opens outward around the connecting piece 18, thereby canceling the fixing effect on the crossbar 1 and reducing the damage caused by the collision between the practitioner and the crossbar 1. Afterwards, the movable column 15 will be reset under the action of the second spring 16 and drive the enclosure sheet 14 to retract through the connecting rod 17.

[0046] In summary, the hurdle frame for physical education teaching, by providing the first rotating rod 11 and the second rotating rod 12, and the first spring 13 used in conjunction with them, can set the buffer mechanism inside the base 4, thereby avoiding tripping of the practitioner and improving the safety of use; by providing the groove 81 used in conjunction with the first rotating rod 11 and the second rotating rod 12, and the elastic rod 7 that can bend and stretch, the support rod 3 can be in a vertical state when stationary and will not tilt due to the change in elasticity of the first spring 13; by providing the enclosing piece 14 and the second spring 16 used in conjunction with it, the fixing effect on the cross bar 1 can be cancelled when the cross bar 1 is hit, which can avoid the user from causing damage to the body when colliding with the cross bar 1.

[0047] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hurdle frame for physical education teaching, comprising a crossbar (1), characterized in that: Also includes: A connecting curved rod (2), wherein both ends of the cross rod (1) are provided with a connecting curved rod (2), the connecting curved rod (2) having a parallel end and a vertical end, the vertical end of the connecting curved rod (2) is connected to a support rod (3), the other end of the support rod (3) is connected to a base (4), and a cavity (6) is provided in the base (4); A buffer mechanism, the buffer mechanism being arranged in the cavity (6), and the buffer mechanism being capable of buffering collisions suffered by the support rod (3); A fixing mechanism is provided between the connecting bent rod (2) and the cross rod (1), the fixing mechanism is used to fix the cross rod (1), and the fixing mechanism can cancel the fixation of the cross rod (1) when the cross rod (1) is subjected to an external force.

2. A hurdle frame for physical education teaching according to claim 1, characterized in that; A first rotating shaft (8) is fixedly provided at one end of the support rod (3) away from the connecting bent rod (2), and both ends of the first rotating shaft (8) are rotatably connected to the side of the base (4); The buffer mechanism comprises a toggle rod (9), the toggle rod (9) is horizontally fixed on the first rotating shaft (8), the toggle rod (9) is a structure symmetrical about the axis of the first rotating shaft (8), and the length line of the toggle rod (9) is perpendicular to the axis of the first rotating shaft (8), the first rotating shaft (8) is also vertically provided with a first rotating rod (11) and a second rotating rod (12) in the shape of a "7" on the same side as the toggle rod (9), the first rotating rod (11) and the second rotating rod (12) are symmetrical about the axis of the first rotating shaft (8), a second rotating shaft (10) is fixed on a side of the cavity (6) close to the toggle rod (9), and the lower ends of the first rotating rod (11) and the second rotating rod (12) are rotatably connected to the second rotating shaft (10); The heads of the first rotating rod (11) and the second rotating rod (12) are both provided with fixing blocks (111), and a first spring (13) is fixed between the fixing blocks (111); Both ends of the toggle rod (9) are provided with abutment members (91), and the abutment members (91) are in contact with surfaces on the side away from the two fixing blocks (111).

3. A hurdle frame for physical education teaching according to claim 2, characterized in that: The outer circumference of the first rotating shaft (8) is provided with a groove (81) symmetrically about the axis center of the first rotating shaft (8), and the opposite sides of the first rotating rod (11) and the second rotating rod (12) can be respectively embedded in the groove (81).

4. A hurdle frame for physical education teaching according to claim 2, characterized in that: An elastic rod (7) is fixedly arranged at the bottom end of the support rod (3), and the other end of the elastic rod (7) is fixed to the bottom surface of the base (4).

5. A hurdle frame for physical education teaching according to claim 1, characterized in that: A boss (22) is fixedly provided at one end of the connecting bent rod (2) close to the cross rod (1); the diameter of the boss (22) is smaller than the diameter of the connecting bent rod (2); a receiving cavity (23) is provided on the circular surface of the boss (22); and the end of the receiving cavity (23) away from the boss (22) is an end with an enlarged diameter; The fixing mechanism comprises an enclosure sheet (14), the enclosure sheet (14) is attached to the outer circumference of the boss (22), a connecting piece (18) is fixedly provided at one end of the bent rod (2) close to the boss (22), one end of the enclosure sheet (14) is hinged to the connecting piece (18), a movable column (15) is provided in the accommodating cavity (23), a connecting rod (17) is hinged to the outer circumference of the movable column (15), and the other end of the connecting rod (17) is hinged to the enclosure sheet (14); The outer surface of the boss (22) is provided with a through groove (221) penetrating to the accommodating cavity (23), and the connecting rod (17) is capable of moving in the through groove (221); A baffle (151) is fixedly provided at one end of the movable column (15) away from the cross bar (1), and a second spring (16) is provided between the outer circumference of the movable column (15) and the inner wall of the enlarged diameter end of the accommodating cavity (23), and the baffle (151) can prevent the second spring (16) from detaching from the movable column (15).

6. A hurdle frame for physical education teaching according to claim 1, characterized in that: An inserting cavity (21) is provided at one end of the connecting bent rod (2) close to the supporting rod (3), and the supporting rod (3) can be inserted into the inserting cavity (21).

7. A hurdle frame for physical education teaching according to claim 2, characterized in that: An opening (5) is provided at the upper end of the cavity (6) corresponding to the support rod (3), and the support rod (3) is movable in the opening (5).

8. A hurdle frame for physical education teaching according to claim 1, characterized in that: The outer circumference of the crossbar (1) is covered with a protective sleeve, which plays a buffering role.

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