Ligament training device for physical education

Abstract

The invention belongs to the technical field of sports equipment, and provides a ligament training device for physical education to solve the technical problems that an existing ligament training device is simple in structure and single in function and can only train leg ligaments and cannot train ligaments of other parts. A back plate is vertically arranged on the rear side of the top of the base, two leg placing plates are symmetrically and rotationally arranged on the front side face of the base, and a mounting box is arranged on the front side face of the base and located between the two leg placing plates; a pushing mechanism is arranged in the mounting box, two traction rods are symmetrically arranged on the front side face perpendicular to the back plate, an auxiliary mechanism is arranged on the front side face of the back plate, a motor is arranged at the top of the back plate, and a waist pressing mechanism is arranged on the front side face of the back plate. Through the combined design of the traction rod, the leg placement plate and the waist pressing mechanism, ligaments of legs, the waist and arms can be trained, and the training effect is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of sports equipment, and particularly relates to a ligament training device for physical education. Background Art

[0002] Sports is a complex social and cultural phenomenon. It takes physical and intellectual activities as the basic means, and according to the laws of human growth and development, skill formation, and function improvement, etc., it achieves the promotion of all-round development, enhancement of physical fitness, improvement of lifestyle, and improvement of quality of life. It is a conscious, purposeful, and organized social activity. Physical education includes training of ligaments.

[0003] Ligament training is to improve the body's ability to withstand bending and the extension ability of each limb by stretching ligaments. Generally, in adolescence, the human body has good toughness. As people age, the toughness of the human body will gradually decline. Through ligament stretching exercises, the flexibility of the body can be improved. And ligament stretching training is easier when starting at a younger age. Therefore, there is a ligament training item in the physical education programs of many schools. Currently, in physical education, simple movements are used for ligament training of the legs, arms, and waist. For this, there have also appeared various types of ligament training devices for physical education on the market.

[0004] The patent with the publication number CN112121360A discloses a ligament training device for physical education, including a bottom plate and a foot plate. The foot plate is fixedly connected to the right end of the bottom plate. A winding and stretching device is provided on the left side of the bottom plate, and a synchronous displacement device is provided on the right side of the bottom plate. Although this technical solution, through the design of the winding and stretching device, can make a noose in the rope loop and put it on the wrist, and the rotation of the motor can wind the stretching rope to pull the person's wrist to move leftward for sit-and-reach training, replacing the process of artificial auxiliary pressing on the back, and can be trained alone. However, the above technical solution has a simple ligament training structure and a single function, and can only train the leg ligaments and cannot train the ligaments of other parts. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a ligament training device for physical education.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: A ligament training device for physical education, including a base, characterized in that a backboard is vertically provided at the rear side of the top of the base, two leg placement plates are symmetrically and rotatably provided on the front side of the base, and an installation box is provided on the front side of the base, and the installation box is located between the two leg placement plates; Inside the installation box, a pushing mechanism is provided. The pushing mechanism is respectively connected to the inner sides of the two leg placement plates. On the front side perpendicular to the back plate, two pulling rods are symmetrically arranged. On the front side of the back plate, an auxiliary mechanism is provided. Both pulling rods are connected to the auxiliary mechanism. Inside the back plate and the base, a first installation cavity and a second installation cavity are respectively formed. The first installation cavity and the second installation cavity are in communication with each other; Inside the first installation cavity and the second installation cavity, a first driving mechanism and a second driving mechanism are respectively provided. The first driving mechanism and the second driving mechanism are connected, and the second driving mechanism is connected to the pushing mechanism through a transmission mechanism. At the top of the back plate, a motor is provided. The output shaft of the motor and the auxiliary mechanism are both connected to the first driving mechanism. On the front side of the back plate, a waist pressing mechanism is provided. The waist pressing mechanism is located below the pulling rod. The waist pressing mechanism is connected to the first driving mechanism.

[0007] Preferably, the pushing mechanism includes a first gear, a first guide rod, a second guide rod, a first gear track, a second gear track, a first rotating shaft, and two sliding grooves. The first rotating shaft is vertically arranged inside the installation box, and the top end and the bottom end of the first rotating shaft are respectively rotatably connected to the top inner wall and the bottom inner wall of the installation box. The first gear is sleeved on the first rotating shaft; The first guide rod and the second guide rod are arranged in parallel on the front side and the rear side of the first gear. The first gear track and the second gear track are respectively arranged on the side surfaces of the first guide rod and the second guide rod close to each other. The first gear track and the second gear track are both meshed with the first gear; The two ends of the first guide rod and the second guide rod respectively penetrate through the installation box and extend to the outside of the installation box. The two sliding grooves are respectively formed on the inner sides of the two leg placement plates; The end of the first guide rod close to the right leg placement plate and the end of the second guide rod close to the left leg placement plate are respectively slidably connected to the adjacent sliding grooves. The first rotating shaft is connected to the second driving mechanism through a transmission mechanism.

[0008] Preferably, the transmission mechanism includes a first pulley, a second pulley, and a transmission belt. The first pulley is arranged on the first rotating shaft. The second pulley is arranged on the second driving mechanism. The transmission belt is respectively connected to the first pulley and the second pulley.

[0009] Preferably, the second driving mechanism includes a rotating rod, a first bevel gear, a second bevel gear, a second rotating shaft, a third bevel gear, and two support seats. The two support seats are vertically arranged on the bottom inner wall of the second installation cavity. The rotating rod penetrates through the two support seats, and the rotating rod is respectively rotatably connected to the two support seats; The first bevel gear and the second bevel gear are respectively sleeved on two ends of the rotating rod. The second rotating shaft is vertically arranged inside the second installation cavity, and the top and bottom ends of the second rotating shaft are respectively rotationally connected to the top inner wall and the bottom inner wall of the second installation cavity. The third bevel gear is sleeved on the second rotating shaft, the second belt pulley is sleeved on the second rotating shaft, the second bevel gear meshes with the third bevel gear, and the first bevel gear is connected to the first driving mechanism.

[0010] Preferably, the first driving mechanism includes a threaded rod, a first threaded block, a fourth bevel gear, a connecting block and a first sliding through hole. The threaded rod is vertically arranged inside the first installation cavity, the top end of the threaded rod is fixedly connected to the output shaft of the motor, and the bottom end of the threaded rod is rotationally connected to the bottom inner wall of the first installation cavity; The fourth bevel gear is arranged on the threaded rod, the fourth bevel gear meshes with the first bevel gear, the first threaded block is arranged on the threaded rod, the first sliding through hole is opened on the front side of the back plate, the connecting block is slidably arranged inside the first sliding through hole, and the rear end of the connecting block is connected to the first threaded block, and the front end is connected to the auxiliary mechanism.

[0011] Preferably, the auxiliary mechanism includes a support plate, an installation groove, a bidirectional lead screw, a second gear, a third guide rod, a third gear track and two second threaded blocks. The support plate is connected to the first driving mechanism. The installation groove is opened on the front side of the support plate. The bidirectional lead screw is horizontally arranged inside the installation groove, and the two ends of the bidirectional lead screw are respectively rotationally connected to the two side inner walls of the installation groove. The second gear is arranged in the middle of the bidirectional lead screw. The two second threaded blocks are respectively arranged at positions with opposite threads on the bidirectional lead screw. The third guide rod is of a U-shaped structure, and the two ends of the third guide rod are respectively connected to the front side of the back plate. The third gear track is arranged on the inner side surface of the third guide rod, and the third gear track meshes with the second gear. The two second threaded blocks are respectively connected to the rear ends of the corresponding pulling rods.

[0012] Preferably, the waist pressing mechanism includes a third threaded block, a sliding block, a second sliding through hole, a fixed seat, a receiving groove, a plurality of third rotating shafts and a plurality of rollers. The third threaded block is arranged on the threaded rod. The second sliding through hole is opened on the front side of the back plate. The sliding block is slidably arranged inside the second sliding through hole, and the rear end of the sliding block is connected to the third threaded block, and the front end is connected to the fixed seat. The receiving groove is opened on the front side of the fixed seat. The plurality of third rotating shafts are arranged parallel to each other at intervals along the height direction of the receiving groove inside the receiving groove, and the two ends of each third rotating shaft are respectively rotationally connected to the two side inner walls of the receiving groove. The plurality of rollers are respectively arranged on the corresponding third rotating shafts, and a plurality of massage blocks are evenly arranged at intervals along the circumferential direction of each roller.

[0013] Preferably, connection grooves are symmetrically formed on both sides of the front side of the base, the two connection grooves penetrate through the left side and the right side of the base respectively, and the rear ends of the two leg placing plates are rotatably connected to the corresponding connection grooves through connection shafts respectively.

[0014] Preferably, baffles are vertically and symmetrically arranged on the left and right sides of the top of each leg placing plate respectively, and a fixing component for fixing the legs is arranged between the two baffles.

[0015] Preferably, hand holding holes are formed at the top of the front end of each pull rod respectively.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) Through the combined design of the pull rod, the leg placing plate and the waist pressing mechanism, the present invention can train the ligaments of the legs, waist and arms, improving the training effect. (2) Through the combined design of the first driving mechanism, the second driving mechanism, the pushing mechanism, the transmission mechanism and the motor, when the motor is started, the present invention can simultaneously drive the two leg placing plates to rotate to both sides, the two pull rods to move upward and the multiple rollers to move upward. Furthermore, under the condition of only providing one power source, the synchronous training of the ligaments of the legs, waist and arms can be realized, simplifying the operation steps and reducing the energy consumption. (3) Through the combined design of the first driving mechanism and the auxiliary mechanism, when the motor is started, the present invention can not only drive the pull rod to move upward, but also synchronously drive the pull rod to move to both sides. Furthermore, the pull rod can move obliquely upward to the outside, enabling the simultaneous stretching training of the arms in the up-down direction and the left-right direction, improving the training effect of the arm ligaments. Description of the Drawings

[0017] Figure 1 It is the front view of the ligament training device for physical education provided by the embodiment of the present invention; Figure 2 It is the top view of the ligament training device for physical education provided by the embodiment of the present invention; Figure 3 It is the left view of the ligament training device for physical education provided by the embodiment of the present invention; Figure 4 It is the left view of the ligament training device for physical education provided by the embodiment of the present invention in the state of removing the baffle, the fixing component and the third guide rod; Figure 5 It is Figure 4 The partial enlarged schematic diagram of part A in Figure 6 It is the cross-sectional view of the base, the installation box and the leg placing plate in the embodiment of the present invention; Figure 7 It isFigure 6 Partial enlarged schematic view of part B; Figure 8 Cross-sectional view of the base, installation box and leg placement plate in another height in the embodiment of the present invention; Figure 9 is Figure 8 Partial enlarged schematic view of part C; Figure 10 Cross-sectional view of the ligament training device for physical education provided by the embodiment of the present invention; Figure 11 is Figure 10 Partial enlarged schematic view of part D; Figure 12 is Figure 10 Partial enlarged schematic view of part E; Figure 13 is Figure 11 Partial enlarged schematic view of part F; In the figure: 1. Base; 2. Back plate; 3. Leg placement plate; 4. Installation box; 5. Pushing mechanism; 501. First gear; 502. First guide rod; 503. Second guide rod; 504. First gear track; 505. Second gear track; 506. First rotating shaft; 507. Sliding groove; 6. Auxiliary mechanism; 601. Support plate; 602. Installation groove; 603. Bidirectional lead screw; 604. Second gear; 605. Third guide rod; 606. Third gear track; 607. Second thread block; 7. First driving mechanism; 701. Threaded rod; 702. First thread block; 703. Fourth bevel gear; 704. Connecting block; 705. First sliding through hole; 8. Second driving mechanism; 801. Rotating rod; 802. First bevel gear; 803. Second bevel gear; 804. Second rotating shaft; 805. Third bevel gear; 806. Support seat; 9. Waist pressing mechanism; 901. Third thread block; 902. Sliding block; 903. Second sliding through hole; 904. Fixed seat; 905. Accommodation groove; 906. Third rotating shaft; 907. Roller; 908. Massage block; 10. Pulling rod; 11. First installation cavity; 12. Second installation cavity; 13. Motor; 14. First pulley; 15. Second pulley; 16. Transmission belt; 17. Connecting groove; 18. Connecting shaft; 19. Baffle; 20. Fixing component; 21. Hand holding hole. Detailed implementation manners

[0018] Next, in combination with the Figures 1 to 13, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0019] As Figures 1 to 13 shown, an embodiment of the present invention provides a ligament training device for physical education, including a base 1. A backboard 2 is vertically arranged at the rear side of the top of the base 1. Two leg placement plates 3 are symmetrically and rotatably arranged on the front side of the base 1. Specifically, connecting grooves 16 are symmetrically formed on both sides of the front side of the base 1, and the two connecting grooves 16 respectively penetrate through the left side surface and the right side surface of the base 1. The rear ends of the two leg placement plates 3 are respectively rotatably connected to the corresponding connecting grooves 16 through connecting shafts 17. An installation box 4 is arranged on the front side of the base 1, and the installation box 4 is located between the two leg placement plates 3; a pushing mechanism 5 is arranged inside the installation box 4, and the pushing mechanism 5 is respectively connected to the inner side surfaces of the two leg placement plates 3. Two pulling rods 10 are symmetrically arranged on the front side perpendicular to the backboard 2, and an auxiliary mechanism 6 is arranged on the front side of the backboard 2. Both of the two pulling rods 10 are connected to the auxiliary mechanism 6. First installation cavities 11 and second installation cavities 12 are respectively formed inside the backboard 2 and the base 1, and the first installation cavity 11 and the second installation cavity 12 are communicated with each other; A first driving mechanism 7 and a second driving mechanism 8 are respectively arranged inside the first installation cavity 11 and the second installation cavity 12. The first driving mechanism 7 and the second driving mechanism 8 are connected, and the second driving mechanism 8 is connected to the pushing mechanism 5 through a transmission mechanism. A motor 13 is arranged at the top of the backboard 2, and the output shaft of the motor 13 and the auxiliary mechanism 6 are both connected to the first driving mechanism 7. A waist pressing mechanism 9 is arranged on the front side of the backboard 2, and the waist pressing mechanism 9 is located below the pulling rods 10. The waist pressing mechanism 9 is connected to the first driving mechanism 7. The motor 13 in the embodiment of the present invention adopts an existing servo motor, and the motor 13 can automatically switch to reverse after rotating forward for a certain time, and can automatically switch to forward again after rotating in reverse for a certain time, performing repeated forward and reverse rotations.

[0020] In the embodiment of the present invention, the pushing mechanism 5 includes a first gear 501, a first guide rod 502, a second guide rod 503, a first gear track 504, a second gear track 505, a first rotating shaft 506 and two sliding grooves 507. The first rotating shaft 506 is vertically arranged inside the installation box 4, and the top end and the bottom end of the first rotating shaft 506 are respectively rotatably connected to the top inner wall and the bottom inner wall of the installation box 4. The first gear 501 is sleeved on the first rotating shaft 506; The first guide rod 502 and the second guide rod 503 are arranged in parallel on the front side and the rear side of the first gear 501. The first gear track 504 and the second gear track 505 are respectively arranged on the adjacent side surfaces of the first guide rod 501 and the second guide rod 502, and both the first gear track 504 and the second gear track 505 are meshed with the first gear 501. The two ends of the first guide rod 502 and the second guide rod 503 respectively penetrate through the mounting box 4 and extend to the outside of the mounting box 4. Fixing holes through which the first guide rod 502 and the second guide rod 503 can pass through are respectively opened on the left side surface and the right side surface of the mounting box 4. Two sliding grooves 507 are respectively opened on the inner side surfaces of the two leg placing plates 3. The end of the first guide rod 502 close to the right leg placing plate 3 and the end of the second guide rod 503 close to the left leg placing plate 3 are respectively slidably connected with the adjacent sliding grooves 507. Specifically, the ends of the first guide rod 502 and the second guide rod 503 respectively abut against the bottom of the sliding grooves 507. The first rotating shaft 506 is connected with the second driving mechanism 8 through a transmission mechanism.

[0021] When the first gear 501 rotates, it will drive the first gear track 504 and the second gear track 505 to move to the right and the left respectively. At this time, the first guide rod 502 and the second guide rod 503 respectively generate an outward thrust on the abutted sliding grooves 507, pushing the two leg placing plates 3 to rotate outward simultaneously around the connecting shaft 18 and the connecting groove 17. During the rotation of the two leg placing plates 3, the first guide rod 502 and the second guide rod 503 respectively slide along the abutted sliding grooves 507, and the rotation of the leg placing plates 3 causes the two legs placed on the leg placing plates 3 to expand to both sides simultaneously, performing ligament stretching training.

[0022] In the embodiment of the present invention, the transmission mechanism includes a first belt pulley 14, a second belt pulley 15 and a transmission belt 16. The first belt pulley 14 is arranged on the first rotating shaft 506, and the first belt pulley 14 is located above the first gear 501. The second belt pulley 15 is arranged on the second driving mechanism 8, and the transmission belt 16 is respectively connected with the first belt pulley 14 and the second belt pulley 15. When specifically designing this embodiment, through holes through which the transmission belt 16 can pass through are respectively opened on the mounting box 4 and the base 1.

[0023] The rotation of the second belt pulley 15 in the embodiment of the present invention drives the transmission belt 16 and the first belt pulley 14 to rotate synchronously, thereby driving the first rotating shaft 506 to rotate, driving the first gear 501 to rotate, and thus driving the first gear track 504 and the second gear track 505 to move to the right and the left respectively.

[0024] In the embodiment of the present invention, the second driving mechanism 8 includes a rotating rod 801, a first bevel gear 802, a second bevel gear 803, a second rotating shaft 804, a third bevel gear 805 and two support seats 806. The two support seats 806 are vertically arranged on the inner wall of the bottom of the second installation cavity 12. The rotating rod 801 penetrates through the two support seats 806, and the rotating rod 801 is respectively rotatably connected to the two support seats 806; The first bevel gear 802 and the second bevel gear 803 are respectively sleeved on the two ends of the rotating rod 801. Specifically, the second bevel gear 803 is arranged at the end of the rotating rod 801 close to the leg placing plate 3, while the first bevel gear 802 is arranged at the end of the rotating rod 801 close to the back plate; the second rotating shaft 804 is vertically arranged inside the second installation cavity 12, and the top end and the bottom end of the second rotating shaft 804 are respectively rotatably connected to the inner wall of the top of the second installation cavity 12 and the inner wall of the bottom of the second installation cavity 12. The third bevel gear 805 is sleeved on the second rotating shaft 804, and the second belt pulley 15 is sleeved on the second rotating shaft 804. The second belt pulley 15 is located above the third bevel gear 805. The second bevel gear 803 and the third bevel gear 805 are meshed, and the first bevel gear 802 is connected to the first driving mechanism 7.

[0025] When the rotating rod 801 in the embodiment of the present invention rotates, it drives the second bevel gear 803 to rotate, and then drives the third bevel gear 805 to rotate, drives the second rotating shaft 804 to rotate, thereby driving the second belt pulley 15 to rotate, drives the transmission belt 16 and the first belt pulley 14 to rotate synchronously, and then drives the first rotating shaft 506 to rotate, drives the first gear 501 to rotate, and thus drives the first gear track 504 and the second gear track 505 to move to the right and the left respectively.

[0026] In the embodiment of the present invention, the first driving mechanism 7 includes a threaded rod 701, a first threaded block 702, a fourth bevel gear 703, a connecting block 704 and a first sliding through hole 705. The threaded rod 701 is vertically arranged inside the first installation cavity 11. The top end of the threaded rod 701 is fixedly connected to the output shaft of the motor 13. A through hole communicating with the first installation cavity 11 is opened at the top of the back plate. This through hole is used for the output shaft of the motor 13 to penetrate into the first installation cavity 11 and be fixedly connected to the top end of the threaded rod 701; the bottom end of the threaded rod 701 is rotatably connected to the inner wall of the bottom of the first installation cavity 11; The fourth bevel gear 703 is arranged on the threaded rod 701. The fourth bevel gear 703 is meshed with the first bevel gear 802. The first threaded block 702 is arranged on the threaded rod 701. The first sliding through hole 705 is opened on the front side of the back plate 2. The connecting block 704 is slidably arranged inside the first sliding through hole 705, and the rear end of the connecting block 704 is connected to the first threaded block 702, and the front end is connected to the auxiliary mechanism 6.

[0027] In the embodiment of the present invention, the motor 13 starts, drives the threaded rod 701 to rotate, and then drives the fourth bevel gear 703 and the first bevel gear 802 to rotate, thereby driving the rotating rod 801 to rotate, driving the second bevel gear 803 to rotate, and then driving the third bevel gear 805 to rotate, driving the second rotating shaft 804 to rotate, thereby driving the second pulley 15 to rotate, driving the transmission belt 16 and the first pulley 14 to rotate synchronously, and then driving the first rotating shaft 506 to rotate, driving the first gear 501 to rotate, thereby driving the first gear track 504 and the second gear track 505 to move to the right and left respectively. During the rotation of the threaded rod 701, the first threaded block 702 and the connecting block 704 move upward along the threaded rod 701, driving the auxiliary mechanism 6 and the two pull rods 10 to move upward synchronously, and then driving the two arms to stretch upward synchronously to train the ligaments of the arms.

[0028] In the embodiment of the present invention, the auxiliary mechanism 6 includes a support plate 601, an installation groove 602, a bidirectional lead screw 603, a second gear 604, a third guide rod 605, a third gear track 606 and two second threaded blocks 607. The support plate 601 is connected to the first driving mechanism 7, specifically, the support plate 601 is connected to the front end of the connecting block 704; the installation groove 602 is opened on the front side surface of the support plate 601, the bidirectional lead screw 603 is horizontally arranged inside the installation groove 602, and both ends of the bidirectional lead screw 603 are rotatably connected to the inner walls on both sides of the installation groove 602; The second gear 604 is arranged in the middle of the bidirectional lead screw 603, that is, at a position on the bidirectional lead screw 603 without threads. The two second threaded blocks 607 are respectively arranged at positions on the bidirectional lead screw 603 with opposite threads, and the top and bottom of the second threaded block 607 are respectively in contact with the top inner wall and the bottom inner wall of the installation groove 602. With such a design, when the bidirectional lead screw 603 rotates, due to the limiting effect of the installation groove 602, the two second threaded blocks 607 cannot rotate together with the bidirectional lead screw 603 and can only move closer to or away from each other along the bidirectional lead screw 603; the third guide rod 605 is of a U-shaped structure, and both ends of the third guide rod 605 are connected to the front side surface of the back plate 2, specifically, the upper end of the third guide rod 605 is connected to the top of the front side surface of the back plate 2, and the lower end of the third guide rod 605 is connected to a position on the front side surface of the back plate 2 below the first sliding through hole 705. Through such a design, it can be ensured that the support plate 601 moves up and down smoothly; the third gear track 606 is arranged on the inner side surface of the third guide rod 605, and the third gear track 606 meshes with the second gear 604. The two second threaded blocks 607 are respectively connected to the rear ends of the corresponding pull rods 10.

[0029] In the embodiment of the present invention, the first threaded block 702 and the connecting block 704 move upward along the threaded rod 701, driving the support plate 601, the bidirectional lead screw 603, the second gear 604 and the two second threaded blocks 607 to move upward synchronously, driving the two tension rods 10 to move upward synchronously. Since the second gear 604 meshes with the third gear track 606, during the upward movement of the second gear 604, under the meshing force, it rotates upward synchronously along the third gear track 606. As the second gear 604 rotates, it drives the bidirectional lead screw 603 to rotate, and then drives the two second threaded blocks 607 to move closer to or away from each other, thereby driving the two tension rods 10 to move to the two sides or the inner side, so as to drive the two arms to stretch synchronously in the up-down direction and the left-right direction, realizing multi-directional stretching training for the arm ligaments and improving the training effect of the arm ligaments.

[0030] In the embodiment of the present invention, the waist pressing mechanism 9 includes a third threaded block 901, a sliding block 902, a second sliding through hole 903, a fixed seat 904, a receiving groove 905, a plurality of third rotating shafts 906 and a plurality of rollers 907. The third threaded block 901 is arranged on the threaded rod 701. The second sliding through hole 903 is opened on the front side of the back plate 2. The sliding block 902 is slidably arranged inside the second sliding through hole 903, and the rear end of the sliding block 902 is connected to the third threaded block 901, and the front end is connected to the fixed seat 904. The receiving groove 905 is opened on the front side of the fixed seat 904. The plurality of third rotating shafts 906 are arranged in parallel and at intervals along the height direction of the receiving groove 905 inside the receiving groove 905, and both ends of each third rotating shaft 906 are rotatably connected to the inner walls on both sides of the receiving groove 905. The plurality of rollers 907 are respectively arranged on the corresponding third rotating shafts 906. A plurality of massage blocks 908 are evenly arranged at intervals along the circumferential direction of each roller 907. The massage block 908 in this embodiment is of a hemispherical structure.

[0031] When the threaded rod 701 in the embodiment of the present invention rotates, it drives the third threaded block 901 to move upward, drives the sliding block 902 to move upward along the second sliding through hole 903, and further drives the fixed seat 904, the roller 907 and the massage block 908 to move upward. During the upward movement of the massage block 908, under the frictional force of the back, it rotates upward, realizing massage and extrusion from the bottom to the top of the back and the waist, and performing extrusion massage training on the ligaments of the waist and the back.

[0032] In the embodiment of the present invention, baffles 18 are vertically and symmetrically arranged on the left and right sides of the top of each leg placement plate 3, and a fixing component 19 for fixing the legs is arranged between the two baffles 18. Through the arrangement of the baffles 18, the two sides of the legs can be limited, preventing the legs from falling off the leg placement plate 3 during the rotation of the leg placement plate 3. Moreover, the fixing component 19 in this embodiment can specifically be structures such as straps and Velcro. Through the design of the fixing component 19, when the two legs are placed on the leg placement plate 3, the legs can be fixed by the fixing component 19, further improving the stability of the legs of the trainer placed on the leg placement plate 3.

[0033] At the front top of each pull rod 10, a hand grip hole 20 is respectively formed. Through the design of the hand grip hole, it is convenient for the trainer to pass the hand through the hand grip hole to grasp the pull rod 10.

[0034] The overall working principle of the ligament training device for physical education provided by the embodiment of the present invention is as follows: When the trainer needs to perform ligament training, first, the trainer sits on the base, leans the back against the roller 907, makes the massage block 908 press on the trainer's back, places the two legs on the leg placement plates 3 respectively, fixes the legs through the fixing component 19, and then passes the two hands through the corresponding hand gripping holes to grip the pulling rod 10; start the motor 13, drive the threaded rod 701 to rotate, and then drive the fourth bevel gear 703 and the first bevel gear 802 to rotate, thereby driving the rotating rod 801 to rotate, driving the second bevel gear 803 to rotate, and then driving the third bevel gear 805 to rotate, driving the second rotating shaft 804 to rotate, thereby driving the second pulley 15 to rotate, driving the transmission belt 16 and the first pulley 14 to rotate synchronously, and then driving the first rotating shaft 506 to rotate, driving the first gear 501 to rotate, thereby driving the first gear track 504 and the second gear track 505 to move to the right and left respectively.During the rotation of the threaded rod 701, the first threaded block 702 and the connecting block 704 move upward along the threaded rod 701, driving the support plate 601, the bidirectional lead screw 603, the second gear 604, and the two second threaded blocks 607 to move upward synchronously, driving the two traction rods 10 to move upward synchronously. Since the second gear 604 meshes with the third gear track 606, during the upward movement of the second gear 604, under the meshing force, it rotates and moves upward synchronously along the third gear track 606. When the second gear 604 rotates, it drives the bidirectional lead screw 603 to rotate, and further drives the two second threaded blocks 607 to move closer to or away from each other, thereby driving the two traction rods 10 to move to the two sides or to the inside, so as to drive the two arms to stretch in the up-down direction and the left-right direction simultaneously, realizing multi-directional stretching training for the arm ligaments; during the rotation of the threaded rod 701, it drives the fourth bevel gear 703 and the first bevel gear 802 to rotate, thereby driving the rotating rod 801 to rotate, driving the second bevel gear 803 to rotate, and further driving the third bevel gear 805 to rotate, driving the second rotating shaft 804 to rotate, thereby driving the second pulley 15 to rotate, driving the transmission belt 16 and the first pulley 14 to rotate synchronously, and further driving the first rotating shaft 506 to rotate, driving the first gear 501 to rotate, thereby driving the first gear track 504 and the second gear track 505 to move to the right side and the left side respectively; at this time, the first guide rod 502 and the second guide rod 503 respectively generate an outward thrust on the abutted sliding groove 507, pushing the two leg placement plates 3 to rotate outward simultaneously around the connecting shaft 18 and the connecting groove 17. During the rotation of the two leg placement plates 3, the first guide rod 502 and the second guide rod 503 respectively slide along the abutted sliding groove 507, and as the leg placement plates 3 rotate, the two legs placed on the leg placement plates 3 expand to the two sides simultaneously, performing stretching ligament training; at the same time, during the rotation of the threaded rod 701, it drives the third threaded block 901 to move upward, driving the sliding block 902 to move upward along the second sliding through hole 903, and further driving the fixed seat 904, the roller 907, and the massage block 908 to move upward. During the upward movement of the massage block 908, under the frictional force of the back, it rotates upward, realizing the massage and extrusion from the bottom to the top of the back and the waist, and performing extrusion massage training on the ligaments of the waist and the back.

[0035] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A ligament training device for physical education, comprising a base (1), characterized in that, A backboard (2) is vertically arranged at the rear side of the top of the base (1). Two leg placement plates (3) are symmetrically and rotatably arranged on the front side of the base (1). An installation box (4) is arranged on the front side of the base (1), and the installation box (4) is located between the two leg placement plates (3). A pushing mechanism (5) is arranged inside the installation box (4). The pushing mechanism (5) is respectively connected to the inner sides of the two leg placement plates (3). Two pull rods (10) are symmetrically arranged on the front side perpendicular to the backboard (2). An auxiliary mechanism (6) is arranged on the front side of the backboard (2). Both pull rods (10) are connected to the auxiliary mechanism (6). A first installation cavity (11) and a second installation cavity (12) are respectively arranged inside the backboard (2) and the base (1), and the first installation cavity (11) and the second installation cavity (12) are communicated with each other. A first driving mechanism (7) and a second driving mechanism (8) are respectively arranged inside the first installation cavity (11) and the second installation cavity (12). The first driving mechanism (7) and the second driving mechanism (8) are connected, and the second driving mechanism (8) is connected to the pushing mechanism (5) through a transmission mechanism. A motor (13) is arranged at the top of the backboard (2). The output shaft of the motor (13) and the auxiliary mechanism (6) are both connected to the first driving mechanism (7). A waist pressing mechanism (9) is arranged on the front side of the backboard (2). The waist pressing mechanism (9) is located below the pull rod (10), and the waist pressing mechanism (9) is connected to the first driving mechanism (7).

2. The ligament training device for physical education according to claim 1, characterized in that, The pushing mechanism (5) includes a first gear (501), a first guide rod (502), a second guide rod (503), a first gear track (504), a second gear track (505), a first rotating shaft (506) and two sliding grooves (507). The first rotating shaft (506) is vertically arranged inside the installation box (4), and the top end and the bottom end of the first rotating shaft (506) are respectively rotatably connected to the top inner wall and the bottom inner wall of the installation box (4). The first gear (501) is sleeved on the first rotating shaft (506). The first guide rod (502) and the second guide rod (503) are arranged in parallel on the front side and the rear side of the first gear (501). The first gear track (504) and the second gear track (505) are respectively arranged on the side surfaces of the first guide rod (501) and the second guide rod (502) close to each other. The first gear track (504) and the second gear track (505) are both meshed with the first gear (501). The two ends of the first guide rod (502) and the second guide rod (503) respectively penetrate through the installation box (4) and extend to the outside of the installation box (4). Two sliding grooves (507) are respectively arranged on the inner sides of the two leg placement plates (3). The end of the first guide rod (502) close to the right leg placement plate (3) and the end of the second guide rod (503) close to the left leg placement plate (3) are respectively slidably connected to the adjacent sliding grooves (507). The first rotating shaft (506) is connected to the second driving mechanism (8) through a transmission mechanism.

3. The ligament training device for physical education according to claim 2, characterized in that, The transmission mechanism includes a first pulley (14), a second pulley (15) and a conveyor belt (16). The first pulley (14) is arranged on the first rotating shaft (506), the second pulley (15) is arranged on the second driving mechanism (8), and the conveyor belt (16) is connected to the first pulley (14) and the second pulley (15) respectively.

4. The ligament training device for physical education according to claim 3, characterized in that The second driving mechanism (8) includes a rotating rod (801), a first bevel gear (802), a second bevel gear (803), a second rotating shaft (804), a third bevel gear (805) and two support seats (806). The two support seats (806) are vertically arranged on the inner wall of the bottom of the second installation cavity (12). The rotating rod (801) penetrates through the two support seats (806), and the rotating rod (801) is respectively rotatably connected to the two support seats (806); The first bevel gear (802) and the second bevel gear (803) are respectively sleeved on the two ends of the rotating rod (801). The second rotating shaft (804) is vertically arranged inside the second installation cavity (12), and the top end and the bottom end of the second rotating shaft (804) are respectively rotatably connected to the inner wall of the top and the inner wall of the bottom of the second installation cavity (12). The third bevel gear (805) is sleeved on the second rotating shaft (804), the second pulley (15) is sleeved on the second rotating shaft (804), the second bevel gear (803) and the third bevel gear (805) are meshed, and the first bevel gear (802) is connected to the first driving mechanism (7).

5. The ligament training device for physical education according to claim 4, characterized in that, The first driving mechanism (7) includes a threaded rod (701), a first threaded block (702), a fourth bevel gear (703), a connecting block (704) and a first sliding through hole (705). The threaded rod (701) is vertically arranged inside the first installation cavity (11). The top end of the threaded rod (701) is fixedly connected to the output shaft of the motor (13), and the bottom end of the threaded rod (701) is rotatably connected to the inner wall of the bottom of the first installation cavity (11); The fourth bevel gear (703) is arranged on the threaded rod (701). The fourth bevel gear (703) is meshed with the first bevel gear (802). The first threaded block (702) is arranged on the threaded rod (701). The first sliding through hole (705) is opened on the front side of the back plate (2). The connecting block (704) is slidably arranged inside the first sliding through hole (705), and the rear end of the connecting block (704) is connected to the first threaded block (702), and the front end is connected to the auxiliary mechanism (6).

6. The ligament training device for physical education according to claim 1, characterized in that, The auxiliary mechanism (6) includes a support plate (601), an installation groove (602), a bidirectional lead screw (603), a second gear (604), a third guide rod (605), a third gear track (606) and two second threaded blocks (607). The support plate (601) is connected to the first driving mechanism (7). The installation groove (602) is opened on the front side of the support plate (601). The bidirectional lead screw (603) is horizontally arranged inside the installation groove (602), and the two ends of the bidirectional lead screw (603) are respectively rotatably connected to the inner walls of the two sides of the installation groove (602); The second gear (604) is arranged in the middle of the bidirectional lead screw (603). Two second threaded blocks (607) are respectively arranged at positions on the bidirectional lead screw (603) with opposite threads. The third guide rod (605) is of a U-shaped structure. The two ends of the third guide rod (605) are respectively connected to the front side of the back plate (2). The third gear track (606) is arranged on the inner side of the third guide rod (605), and the third gear track (606) meshes with the second gear (604). The two second threaded blocks (607) are respectively connected to the rear ends of the corresponding pull rods (10).

7. The ligament training device for physical education according to claim 5, wherein The waist pressing mechanism (9) includes a third threaded block (901), a sliding block (902), a second sliding through hole (903), a fixed seat (904), a receiving groove (905), a plurality of third rotating shafts (906) and a plurality of rollers (907). The third threaded block (901) is arranged on the threaded rod (701). The second sliding through hole (903) is opened on the front side of the back plate (2). The sliding block (902) is slidably arranged inside the second sliding through hole (903), and the rear end of the sliding block (902) is connected to the third threaded block (901), and the front end is connected to the fixed seat (904). The receiving groove (905) is opened on the front side of the fixed seat (904). A plurality of third rotating shafts (906) are arranged parallel to each other and at intervals in the height direction of the receiving groove (905), and the two ends of each third rotating shaft (906) are respectively rotatably connected to the two inner side walls of the receiving groove (905). A plurality of rollers (907) are respectively arranged on the corresponding third rotating shafts (906). A plurality of massage blocks (908) are evenly arranged at intervals along the circumferential direction of each roller (907).

8. The ligament training device for physical education according to claim 1, characterized in that, Connection grooves (17) are symmetrically opened on both sides of the front side of the base (1). The two connection grooves (17) respectively penetrate through the left side surface and the right side surface of the base (1). The rear ends of the two leg placing plates (3) are respectively rotatably connected to the corresponding connection grooves (17) through connection shafts (18).

9. The ligament training device for physical education according to claim 1, characterized in that, On the left and right sides of the top of each leg placing plate (3), baffles (19) are vertically and symmetrically arranged respectively. A fixing component (20) for fixing the legs is arranged between the two baffles (19).

10. The ligament training device for physical education according to claim 1, characterized in that, Hand holding holes (21) are respectively opened at the top of the front end of each pull rod (10).

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