Leg pressing device for physical education

Abstract

The utility model belongs to the technical field of leg pressing devices, and particularly relates to a leg pressing device for physical education, which comprises an outer U-shaped rod and an inner U-shaped rod arranged in the outer U-shaped rod, two coaxial rotating shafts are respectively arranged between two ends of the inner U-shaped rod and two ends of the outer U-shaped rod, two hinges which are mutually hinged are respectively arranged between two sides of the inner U-shaped rod and two sides of the outer U-shaped rod in a rotating mode, and the two ends of the outer U-shaped rod are respectively provided with a hinge. A plurality of hard rods are fixed to the two sides of the inner U-shaped rod and the two sides of the outer U-shaped rod at intervals, a plurality of long steel pipes provided with holes and penetrated by the hard rods are arranged outside the outer U-shaped rod, a plurality of short steel pipes provided with holes and penetrated by the hard rods are arranged outside the inner U-shaped rod, and first rubber sleeves are fixed to through holes in the two ends of the long steel pipes provided with holes. Second rubber sleeves are fixed to through holes in the two ends of the short steel pipe with the holes, the second rubber sleeves and the first rubber sleeves are in interference fit with hard rods, annular magnets are fixed to the outer portions of the hard rods, and at least two handle knots are fixed to the outer side of the outer U-shaped rod. The leg pressing device can be unfolded to form a triangular stable structure, and the leg pressing device is not prone to deformation and bending after bearing a student with large weight, so that the warm-up effect of the student with large weight is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of leg press apparatuses, and in particular relates to a leg press apparatus for physical education teaching. Background Art

[0002] The main purpose of leg stretching is to improve muscle flexibility, prevent sports injuries, and help athletes better complete various sports movements. In physical education, teachers should take out the leg stretching machine from the equipment room in advance, place it on the playground, and guide students to do leg stretching training before strenuous exercise.

[0003] Leg stretching training usually includes two types: straight leg stretching and side leg stretching. It is to place the legs on an object at the same height as the waist, sit back with the hips, keep the buttocks flat, keep the supporting leg perpendicular to the ground, straighten the knees, point the toes of the leg being stretched upward and consciously hook back, and move the upper body forward with force to make the leg being stretched in a straight line.

[0004] Before physical education class, a foldable leg press is used for leg press warm-up. The base is laid flat on the playground, and a doorframe leg press is erected and the height is adjusted. When students press their legs, most of their weight is applied to the cross brace, especially for students with heavier weight. The horizontal pressure makes the connection between the doorframe leg press and the base bear a huge load, which is easy to deform and bend, which is not conducive to improving the warm-up effect of students with heavier weight. For this reason, we propose a leg press for physical education teaching. Utility Model Content

[0005] The utility model aims to provide a leg press for physical education teaching, which can be opened into a triangular stable structure and is not easy to be deformed and bent after carrying heavy students, so as to improve the warm-up effect of heavy students.

[0006] The technical solutions adopted in this utility are as follows:

[0007] The invention relates to a leg press for physical education teaching, comprising an outer U-shaped rod and an inner U-shaped rod arranged inside the outer U-shaped rod, two coaxial rotating shafts are respectively installed between the two ends of the inner U-shaped rod and the two ends of the outer U-shaped rod, two hinges are rotatably installed between the two sides of the inner U-shaped rod and the two sides of the outer U-shaped rod, a plurality of hard rods are fixed at intervals on both sides of the inner U-shaped rod and the two sides of the outer U-shaped rod, a plurality of long steel pipes with holes penetrated by the hard rod are arranged on the outside of the outer U-shaped rod, and a plurality of short steel pipes with holes penetrated by the hard rod are arranged on the outside of the inner U-shaped rod. During physical education teaching, the outer U-shaped rod, the inner U-shaped rod, the rotating shaft and the outer U-shaped rod are taken out from the equipment room. The leg press is composed of hinges. The inner U-shaped rod is rotated forward around the rotation axis to open it relative to the outer U-shaped rod until the hinge is straightened and stands on the training ground. The leg press can be opened into a triangular stable structure, and then a number of long steel tubes with holes and short steel tubes with holes are hung on the outer U-shaped rod and the inner U-shaped rod respectively by hard rods to place the legs of students. After carrying heavier students, it is not easy to deform and bend, so as to improve the warm-up effect for heavier students. The height of the long steel tube with holes and the short steel tube with holes can be changed to be suitable for leg stretching for students of different heights. After the teaching is finished, the inner U-shaped rod can be reversed to be folded and then stored in the equipment room, which saves more space.

[0008] The through holes at both ends of the long steel tube with holes are fixed with rubber sleeves 1, and the through holes at both ends of the short steel tube with holes are fixed with rubber sleeves 2. Both rubber sleeves 2 and 1 have interference fit with the hard rod. When hanging the long steel tube with holes and the short steel tube with holes, the friction between rubber sleeves 2 and 1 and the hard rod is utilized to lock them, so that they can be placed stably and no hand support is required after hanging.

[0009] The outside of the hard rod is fixed with a ring-shaped magnet. The long steel pipe with holes and the short steel pipe with holes are both made of magnetic metal. The outer surface is painted. After being hung, they are attracted by the magnetic field of the magnet to further reinforce them and prevent them from slipping during transportation.

[0010] At least two handle knots are fixed on the outside of the outer U-shaped rod, and the handle knots are all made of nylon. Trainees can pull the handle knots by hand to stabilize their posture or stretch their legs.

[0011] Two frosted sleeves are respectively fixed in the middle of the inner U-shaped rod and the middle of the outer U-shaped rod, which can increase the friction between the inner U-shaped rod and the training ground, and are not easy to slide and deviate when stretching the legs.

[0012] Two parallel supporting wheels are rotatably mounted on the two corners of the lower edge of the outer U-shaped rod. After the leg press is folded, the two supporting wheels can be used to touch the ground and the leg press can be pushed in the manner of a trolley to be sent to or out of the equipment room, which can save physical strength.

[0013] The technical effects achieved by this utility model are:

[0014] The utility model discloses a leg press device for physical education teaching. During physical education teaching, the leg press device composed of an outer U-shaped rod, an inner U-shaped rod, a rotating shaft and a hinge is taken out from an equipment room, and the inner U-shaped rod is rotated forwardly around the rotating shaft to be opened relative to the outer U-shaped rod until the hinge is straightened and stands on the training ground, so that the leg press device can be opened into a triangular stable structure, and then a plurality of long steel pipes with holes and short steel pipes with holes are respectively hung on the outer U-shaped rod and the inner U-shaped rod by hard rods to place the legs of students. After carrying students with heavier weight, the leg press device is not easy to be deformed and bent, so as to improve the warm-up effect of students with heavier weight. The heights of the long steel pipes with holes and the short steel pipes with holes can be changed to be suitable for leg press of students with different heights. After teaching is finished, the inner U-shaped rod can be reversed to be folded and then stored in the equipment room, which saves space. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of the practical leg press;

[0016] Figure 2 This is a front view of the outer U-shaped rod of the utility model;

[0017] Figure 3 It is a rear view of the inner U-shaped rod of the utility model;

[0018] Figure 4 This is the front view of the practical long steel pipe with holes;

[0019] Figure 5 It is the front view of the practical short steel pipe with holes.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Outer U-shaped rod; 2. Inner U-shaped rod; 3. Rotating axis; 4. Hinge; 5. Hard rod; 6. Long steel pipe with holes; 7. Short steel pipe with holes; 8. Rubber sleeve one; 9. Rubber sleeve two; 10. Magnet; 11. Handle knot; 12. Frosted sleeve; 13. Support wheel. DETAILED DESCRIPTION

[0022] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0023] like Figure 1-5As shown, a leg press for physical education teaching comprises an outer U-shaped rod 1 and an inner U-shaped rod 2 arranged inside the outer U-shaped rod 1, two coaxial rotating shafts 3 are respectively installed between the two ends of the inner U-shaped rod 2 and the two ends of the outer U-shaped rod 1, the two rotating shafts 3 are respectively rotatably connected to the two ends of the inner U-shaped rod 2 and the two ends of the outer U-shaped rod 1, two hinges 4 hinged to each other are rotatably installed between the two sides of the inner U-shaped rod 2 and the two sides of the outer U-shaped rod 1, the ends of two adjacent hinges 4 close to each other are hinged, a plurality of hard rods 5 are fixed at intervals on both sides of the inner U-shaped rod 2 and the two sides of the outer U-shaped rod 1, a plurality of long steel pipes 6 with holes penetrated by the hard rods 5 are arranged on the outside of the outer U-shaped rod 1, a plurality of short steel pipes 7 with holes penetrated by the hard rods 5 are arranged on the outside of the inner U-shaped rod 2, physical education teaching When the leg press is performed, the outer U-shaped rod 1, the inner U-shaped rod 2, the rotating shaft 3 and the hinge 4 are taken out from the equipment room, and the inner U-shaped rod 2 is rotated forward around the rotating shaft 3 to open it relative to the outer U-shaped rod 1, until the hinge 4 is straightened and stands on the training ground, and the leg press can be opened into a triangular stable structure. Then, a plurality of long steel pipes 6 with holes and short steel pipes 7 with holes are respectively hung on the outer U-shaped rod 1 and the inner U-shaped rod 2 by hard rods 5 to place the legs of trainees. After carrying heavier trainees, it is not easy to deform and bend, so as to improve the warm-up effect of heavier trainees. The heights of the long steel pipes 6 with holes and the short steel pipes 7 with holes can be changed to be suitable for trainees of different heights to perform leg press. After the teaching is finished, the inner U-shaped rod 2 can be reversed to be folded and then stored in the equipment room, which saves space.

[0024] Among them, the outer surface of the hard rod 5 can be threaded for screwing on nuts to tighten the long steel pipe with holes 6 and the short steel pipe with holes 7 for locking to prevent slipping. In addition, the height of the outer U-shaped rod 1 and the inner U-shaped rod 2 after opening is more than 1.4m, and the width is also large, which can accommodate at least four students to do leg stretching training at the same time.

[0025] like Figure 1 , Figure 4 and Figure 5 As shown, rubber sleeves 8 are fixed to the through holes at both ends of the long steel tube with holes 6, and rubber sleeves 2 9 are fixed to the through holes at both ends of the short steel tube with holes 7. Both rubber sleeves 2 9 and 8 are interference fit with the hard rod 5, and the outer surfaces of rubber sleeves 2 9 and 8 are frosted. When hanging the long steel tube with holes 6 and the short steel tube with holes 7, the friction between rubber sleeves 2 9 and 8 and the hard rod 5 is used to lock them, so that they can be placed stably and no hand support is required after hanging.

[0026] like Figure 2 and Figure 3 As shown, a ring-shaped magnet 10 is fixed to the outside of the hard rod 5, and the long steel pipe 6 with holes and the short steel pipe 7 with holes are both made of magnetic metal. The outer surface is painted and is attracted by the magnetic field of the magnet 10 after being hung to further reinforce and prevent slipping during transportation.

[0027] like Figure 1 and Figure 2 As shown, at least two handle knots 11 are fixed on the outside of the outer U-shaped rod 1, and the handle knots 11 are all made of nylon. The trainees can pull the handle knots 11 by hand to stabilize their posture or stretch their legs.

[0028] like Figure 2 and Figure 3 As shown, two frosted sleeves 12 are fixed in the middle of the inner U-shaped rod 2 and the middle of the outer U-shaped rod 1 respectively. The frosted sleeves 12 are made of rubber with frosted outer surfaces, which can increase the friction between the training ground and are not easy to slide and deviate when stretching the legs.

[0029] like Figure 1 and Figure 2 As shown, two parallel support wheels 13 are rotatably mounted on the two corners of the lower edge of the outer U-shaped rod 1. After the leg press is folded, the two support wheels 13 can be grounded and pushed in the manner of a trolley to be sent to or from the equipment room, which can save physical effort.

[0030] The working principle of the utility model is: during physical education teaching, a leg press composed of an outer U-shaped rod 1, an inner U-shaped rod 2, a rotating shaft 3 and a hinge 4 is taken out from the equipment room, and the inner U-shaped rod 2 is rotated forward around the rotating shaft 3 to open it relative to the outer U-shaped rod 1, until the hinge 4 is straightened and stands on the training ground, so that the leg press can be opened into a triangular stable structure.

[0031] Then, a plurality of long steel tubes with holes 6 and short steel tubes with holes 7 are respectively hung on the outer U-shaped rod 1 and the inner U-shaped rod 2 by hard rods 5 to place the legs of students. They are not easy to deform and bend after carrying students with heavier weight, so as to improve the warm-up effect of students with heavier weight. The heights of the long steel tubes with holes 6 and the short steel tubes with holes 7 can be changed to be suitable for leg stretching for students of different heights.

[0032] After the teaching is finished, the inner U-shaped rod 2 can be reversed to be folded and then stored in the equipment room, which saves space.

[0033] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A leg press for physical education, characterized in that: The invention comprises an outer U-shaped rod (1) and an inner U-shaped rod (2) arranged inside the outer U-shaped rod (1); two coaxial rotating shafts (3) are respectively installed between the two ends of the inner U-shaped rod (2) and the two ends of the outer U-shaped rod (1); two hinges (4) are rotatably installed between the two sides of the inner U-shaped rod (2) and the two sides of the outer U-shaped rod (1); a plurality of hard rods (5) are fixed at intervals on both sides of the inner U-shaped rod (2) and the two sides of the outer U-shaped rod (1); a plurality of long steel pipes (6) with holes penetrated by the hard rods (5) are arranged outside the outer U-shaped rod (1); and a plurality of short steel pipes (7) with holes penetrated by the hard rods (5) are arranged outside the inner U-shaped rod (2).

2. A leg press for physical education teaching according to claim 1, characterized in that: The through holes at both ends of the long steel tube with holes (6) are fixed with rubber sleeves 1 (8), and the through holes at both ends of the short steel tube with holes (7) are fixed with rubber sleeves 2 (9), and both the rubber sleeves 2 (9) and the rubber sleeves 1 (8) are interference fit with the hard rod (5).

3. A leg press for physical education teaching according to claim 1, characterized in that: The outside of the hard rod (5) is fixed with a ring-shaped magnet (10).

4. A leg press for physical education teaching according to claim 1, characterized in that: At least two handle knots (11) are fixed on the outside of the outer U-shaped rod (1).

5. A leg press for physical education teaching according to claim 1, characterized in that: Two frosted sleeves (12) are respectively fixed in the middle of the inner U-shaped rod (2) and in the middle of the outer U-shaped rod (1).

6. A leg press for physical education teaching according to claim 1, characterized in that: Two parallel supporting wheels (13) are rotatably mounted on two corners of the lower edge of the outer U-shaped rod (1).

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