Knee protection device for physical training and use method thereof

Abstract

The invention relates to the field of training instruments. The invention discloses a knee protection device for physical training and a use method of the knee protection device, and aims to solve the problems that an existing knee pad for training lacks protection on the patella of the knee in the use process, and the knee pad generally plays a role in preventing strain and the like in the exercise process. However, the patella of the trainee is generally injured if the trainee falls down accidentally in the exercise process, so that the daily life of the trainee is influenced. By means of a protection mode of preventing the knees of a trainee from being touched, knee joints can be stabilized, shaking and displacement of the knees in movement can be relieved, the normal physiological function of the knees can be maintained, the injury risk caused by unstable joints is reduced, the patella of the trainee is protected through the circular gasket, and the training effect is good. The kneecap of the trainee is further protected through the extrusion protection piece in the filling protection area, and the protection range of the knees of the trainee is expanded.

Description

Technical Field

[0001] The present invention relates to the field of training equipment, and particularly to a knee protection device for physical training and its usage method. Background Art

[0002] Physical fitness is the basic motor ability of the human body manifested through motor qualities such as strength, speed, endurance, coordination, flexibility, and agility. It is an important constituent factor of an athlete's competitive ability. The level of physical fitness is closely related to the morphological characteristics and functional characteristics of the human body. The knee is a part of the human body located at the connection between the thigh and the calf;

[0003] The patella is the largest sesamoid bone in the human body, located in front of the knee joint and is an important part of the knee extension device. It is connected to the tibial tuberosity through the patellar ligament. Under the contraction of the quadriceps femoris muscle, it can effectively transmit force and help the knee joint complete the straightening movement. If the patella is damaged, the knee extension function of the knee joint will be significantly affected, resulting in obstacles in daily activities such as walking, going up and down stairs, and running.

[0004] In the prior art, the training knee pads protect the patella through a positioning ring or a silicone pad, which can accurately fix the patella on the normal movement trajectory. During exercise, especially when the knee joint flexes and extends, it prevents abnormal displacement or deviation of the patella, reducing the risk of wear and injury caused by incorrect patella position.

[0005] Compared with the prior art: The existing training knee pads lack protection for the patella of the knee during use. Generally, the role of the knee pads during exercise is to prevent muscle strains and other aspects. However, if a person accidentally falls during exercise, the patella of the training personnel is generally damaged, which will then affect the daily life of the training personnel. Summary of the Invention

[0006] The purpose of the present invention is to provide a knee protection device for physical training and its usage method to solve the problems raised in the above background art. To achieve the above purpose, the present invention provides the following technical solution: A knee protection device for physical training, including an elastic knee pad. A magic tape is fixedly connected to the outer surface of the elastic knee pad. The elastic knee pad is provided with a ring-shaped protection area at the position of the patella of the human body;

[0007] The protection area includes a ring-shaped clamp embedded in the elastic knee pad. A protection limiting sleeve is fixedly connected to the center of the ring-shaped clamp. An internal extrusion member and an external extrusion member are correspondingly arranged in the protection limiting sleeve. The internal extrusion member abuts against the patella of the human body, and the external extrusion member is exposed on the outer surface of the elastic knee pad. A filling protection area is arranged between the inner wall of the ring-shaped clamp and the outer wall of the protection limiting sleeve. An extrusion protection member is arranged at the position of the ring-shaped clamp in the filling protection area.

[0008] Preferably, an accommodation cavity is formed inside the protective limiting sleeve. The internal pressing member includes an internal pressing gasket disposed in the accommodation cavity of the protective limiting sleeve. The internal pressing gasket is divided into a circular gasket and a frustum-shaped elastic pressing disc. The elastic pressing disc is arranged in a frustum shape, and the circular gasket abuts against the patella of the human body.

[0009] Preferably, an annular limiting sleeve is slidably arranged on the inner wall of the accommodation cavity. A plurality of compression springs are arranged between the outer wall of the annular limiting sleeve and the inner wall of the accommodation cavity. The plurality of compression springs are arranged on the outer wall of the annular limiting sleeve around the circumference of the annular limiting sleeve. A damping rod is correspondingly arranged on the circular gasket, and the damping rod abuts against the outer wall of the annular limiting sleeve at the end far from the compression spring.

[0010] Preferably, the external pressing member includes an external pressing gasket disposed opposite to the internal pressing member. The external pressing gasket is slidably arranged in the accommodation cavity. A pressure spring is sleeved on the external pressing gasket. Two ends of the pressure spring are respectively connected to the external pressing gasket and the protective limiting sleeve. One end of the external pressing gasket faces the outer surface of the elastic knee pad and is exposed. The other end of the external pressing gasket faces the direction of the protective limiting sleeve, and the other end of the external pressing gasket is frustum-shaped and relatively presses against the elastic pressing disc.

[0011] Preferably, an annular spring is arranged inside the annular limiting sleeve around the inner wall of the annular limiting sleeve. A plurality of moving blocks are arranged around the circumference of the outer wall of the protective limiting sleeve. One end of each of the plurality of moving blocks faces the inside of the accommodation cavity and is provided with a clamping plate. The clamping plate is arranged outside the annular spring and abuts against the outer wall edge of the inner elastic pressing disc.

[0012] Preferably, a limiting wheel is arranged at the other end of each of the plurality of moving blocks far from the clamping plate. The extrusion protection member includes an annular chuck rotatably arranged inside the annular clamp. The annular chuck is provided with inclined grooves corresponding to the plurality of moving blocks, and the limiting wheels on the moving blocks are in contact with the corresponding inclined grooves. A plurality of elastic arc-shaped side strips are arranged on one side of the annular clamp facing the filling protection area.

[0013] Preferably, one ends of the plurality of elastic arc-shaped side strips are arranged around the circumference of the annular clamp in a high-low staggered manner. The other ends of the plurality of elastic arc-shaped side strips are connected to the annular chuck and are located inside the filling protection area. Memory foam is filled in the filling protection area; the memory foam has good cushioning and air permeability. Without affecting the ventilation and heat dissipation of the legs of the training personnel, after the memory foam contacts the legs and patella of the training personnel, it can be adjusted according to the human body shape to provide comfortable support.

[0014] Preferably, the method for using the knee protection device for physical training comprises the following steps:

[0015] S1: The trainee wears the elastic knee brace on the leg so that the protective limit sleeve is located at the trainee's patella, and the circular gasket is in close contact with the patella. When the trainee performs normal leg knee bending movement, the patella squeezes the circular gasket, and the annular limit sleeve moves in the accommodating cavity toward the direction of the compression spring, so that the internal compression gasket can be expanded and contracted under the action of the annular limit sleeve and the compression spring;

[0016] S2: After the external compression pad is squeezed by the outside, it will move toward the internal compression pad. There is a gap between the external compression pad and the internal compression pad. Only when the trainee falls, the external compression pad and the internal compression pad will be squeezed relative to each other.

[0017] S3: When the trainee falls down, the trainee's legs are in a bent state. After the elastic extrusion disk is squeezed by the external extrusion gasket, the outer edge of the elastic extrusion disk will be squeezed and moved toward the direction of the annular spring. After the clamping plate is squeezed, the moving block will move. After being squeezed, several elastic arc-shaped side strips will rise up, and the memory foam in the filling protection area will be lifted up. At this time, the memory foam will wrap around the trainee's legs for protection.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the present invention, when the trainee's knee squeezes the inner squeezing pad and the outer squeezing pad is squeezed by the outside, the outer squeezing pad and the inner squeezing pad will be squeezed relative to each other so as to contact each other. Separate squeezing of the outer squeezing pad and the inner squeezing pad will not affect the trainee's daily use.

[0020] In the present invention, a number of elastic arc-shaped side strips will rise up after being squeezed, and lift up the memory foam in the filling protection zone. At this time, the memory foam will wrap around the trainee's legs for protection, further protecting the trainee's knees. The anti-touch protection method for the trainee's knees can help stabilize the knee joint, reduce the shaking and displacement of the knee during exercise, help maintain the normal physiological function of the knee, and reduce the risk of injury caused by joint instability. The trainee's patella is protected by a circular gasket, and the trainee's patella is further protected by the extrusion protection piece in the filling protection zone, which expands the protection range of the trainee's knees and further improves the safety performance during training.

[0021] In the present invention, the memory foam has good cushioning and breathability. While not affecting the ventilation and heat dissipation of the legs of the training personnel, after the memory foam comes into contact with the legs and the patella of the training personnel, it can be adjusted according to the shape of the human body to provide comfortable support. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 is a three-dimensional structural schematic diagram of the elastic knee guard of the present invention;

[0024] Figure 3 is a three-dimensional structural schematic diagram of the protective limiting sleeve and the annular clamp of the present invention;

[0025] Figure 4 is a three-dimensional structural schematic diagram of the protective limiting sleeve of the present invention;

[0026] Figure 5 is an unfolded three-dimensional structural diagram of the protective limiting sleeve and the annular clamp of the present invention;

[0027] Figure 6 is a three-dimensional structural schematic diagram of the protective limiting sleeve and the internal pressing member of the present invention;

[0028] Figure 7 is a sectional view of the three-dimensional structure of the protective limiting sleeve of the present invention Figure 1 ;

[0029] Figure 8 is a sectional view of the three-dimensional structure of the protective limiting sleeve of the present invention Figure 2 ;

[0030] Figure 9 is a three-dimensional structural schematic diagram of the annular limiting sleeve and the internal pressing member of the present invention;

[0031] Figure 10 is a three-dimensional structural schematic diagram of the annular limiting sleeve, the internal pressing member and the external pressing member of the present invention;

[0032] Figure 11 is an unfolded diagram of the annular limiting sleeve, the internal pressing member and the external pressing member of the present invention;

[0033] Figure 12 is a three-dimensional structural schematic diagram of the annular limiting sleeve and the annular spring of the present invention;

[0034] Figure 13 is a three-dimensional structural schematic diagram of the annular limiting sleeve and the internal pressing member of the present invention;

[0035] Figure 14 is a three-dimensional structural schematic diagram of the extrusion protection member and the annular clamp of the present invention;

[0036] Figure 15 Schematic three-dimensional structure diagram of the extrusion protection part of the present invention.

[0037] In the figure: 1. Elastic knee pad; 11. Velcro; 12. Ring-shaped clamp; 13. Protection limiting sleeve; 14. Accommodation cavity; 2. Internal extrusion part; 21. Internal extrusion gasket; 22. Circular gasket; 23. Elastic extrusion disc; 24. Ring-shaped limiting sleeve; 25. Compression spring; 26. Damping rod; 3. External extrusion part; 31. External extrusion gasket; 32. Pressure spring; 4. Ring spring; 41. Moving block; 42. Clamping plate; 43. Limiting wheel; 5. Filling protection area; 6. Extrusion protection part; 61. Ring-shaped chuck; 62. Inclined groove; 63. Elastic arc-shaped edge strip. Specific implementation manner

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0039] Please refer to Figures 1 to 15 , the present invention provides a technical solution: a knee protection device for physical training, including an elastic knee pad 1, the outer surface of the elastic knee pad 1 is fixedly connected with a Velcro 11, and the elastic knee pad 1 is provided with a ring-shaped protection area at the patella of the human body;

[0040] The protection area includes a ring-shaped clamp 12 embedded in the elastic knee pad 1, a protection limiting sleeve 13 is fixedly connected to the center of the ring-shaped clamp 12, an internal extrusion part 2 and an external extrusion part 3 are correspondingly arranged in the protection limiting sleeve 13, the internal extrusion part 2 abuts against the patella of the human body, the external extrusion part 3 is exposed on the outer surface of the elastic knee pad 1, a filling protection area 5 is arranged between the inner wall of the ring-shaped clamp 12 and the outer wall of the protection limiting sleeve 13, and an extrusion protection part 6 is arranged at the part of the ring-shaped clamp 12 located in the filling protection area 5.

[0041] In this embodiment, an accommodation cavity 14 is opened inside the protection limiting sleeve 13, the internal extrusion part 2 includes an internal extrusion gasket 21 arranged in the accommodation cavity 14 in the protection limiting sleeve 13, the internal extrusion gasket 21 is divided into a circular gasket 22 and a frustum-shaped elastic extrusion disc 23, the elastic extrusion disc 23 is arranged in a frustum shape, and the circular gasket 22 abuts against the patella of the human body;

[0042] A circular limiting sleeve 24 is slidably arranged on the inner wall of the accommodation cavity 14. A plurality of compression springs 25 are arranged between the outer wall of the circular limiting sleeve 24 and the inner wall of the accommodation cavity 14. The plurality of compression springs 25 are arranged on the outer wall of the circular limiting sleeve 24 around the circumference of the circular limiting sleeve 24. A damping rod 26 is correspondingly arranged on the circular gasket 22, and the damping rod 26 abuts against the outer wall of the end of the circular limiting sleeve 24 away from the compression spring 25;

[0043] The trainer wears the elastic knee pad 1 on the leg, so that the protection limiting sleeve 13 is located at the patella of the trainer. The circular gasket 22 is in close contact with the patella. When the trainer makes a normal leg knee bending movement, the patella presses the circular gasket 22. After being pressed, the circular gasket 22 causes the damping rod 26 to press the circular limiting sleeve 24. The circular limiting sleeve 24 moves in the accommodation cavity 14 in the direction towards the compression spring 25, so that the internal extrusion gasket 21 can expand and contract under the action of the circular limiting sleeve 24 and the compression spring 25, thus not affecting the leg bending movement of the trainer during normal training.

[0044] In this embodiment, the external extrusion member 3 includes an external extrusion gasket 31 arranged opposite to the internal extrusion member 2. The external extrusion gasket 31 is slidably arranged in the accommodation cavity 14. A pressure spring 32 is sleeved on the external extrusion gasket 31. Two ends of the pressure spring 32 are respectively connected to the external extrusion gasket 31 and the protection limiting sleeve 13. One end of the external extrusion gasket 31 is arranged towards the outer surface of the elastic knee pad 1 and exposed outside. The other end of the external extrusion gasket 31 is arranged towards the direction of the protection limiting sleeve 13, and the other end of the external extrusion gasket 31 is frustum-shaped and relatively extrudes with the elastic extrusion disc 23;

[0045] The external extrusion gasket 31 is slidably arranged in the protection limiting sleeve 13 through the arranged pressure spring 32. When the external extrusion gasket 31 is externally extruded, the external extrusion gasket 31 will move towards the direction of the internal extrusion gasket 21. There is a gap between the external extrusion gasket 31 and the internal extrusion gasket 21. Only when the trainer falls, the leg knee of the trainer presses the internal extrusion gasket 21, and when the external extrusion gasket 31 is externally extruded, the external extrusion gasket 31 and the internal extrusion gasket 21 will relatively extrude, so that the two come into contact. Separately extruding the external extrusion gasket 31 and the internal extrusion gasket 21 will not affect the daily use of the trainer.

[0046] In this embodiment, an annular spring 4 is arranged around the inner wall of the annular limiting sleeve 24, and a plurality of moving blocks 41 are arranged around the circumference of the protecting limiting sleeve 13 on the outer wall of the protecting limiting sleeve 13. A clamping plate 42 is arranged at one end of the plurality of moving blocks 41 toward the accommodating cavity 14, and the clamping plate 42 is arranged outside the annular spring 4 and abuts against the outer wall edge of the inner elastic extrusion disk 23;

[0047] A limiting wheel 43 is provided at the other end of the plurality of moving blocks 41 away from the clamping plate 42, the extrusion protection member 6 comprises an annular chuck 61 rotatably arranged in the annular clamp 12, the annular chuck 61 is provided with oblique grooves 62 corresponding to the plurality of moving blocks 41, and the limiting wheel 43 on the moving block 41 contacts the corresponding oblique grooves 62, and the annular clamp 12 is provided with a plurality of elastic arc-shaped side strips 63 on the side facing the filling protection area 5;

[0048] When the trainee falls, the trainee's legs are in a bent state, and the trainee's knee patella abuts against the circular gasket 22, and the circular gasket 22 is squeezed onto the elastic squeezing disk 23. At this time, the annular limiting sleeve 24 is squeezed onto the compression spring 25, and the external squeezing gasket 31 is squeezed externally and then driven by the compression spring 32 to move the external squeezing gasket 31 toward the elastic squeezing disk 23. At this time, one end of the external squeezing gasket 31 with a truncated cone is in the annular limiting sleeve 24. Since the elastic squeezing disk 23 is made of elastic material, after the elastic squeezing disk 23 and the external squeezing gasket 31 are squeezed, the outer edge of the elastic squeezing disk 23 is squeezed and moved toward the direction of the annular spring 4. The elastic squeezing disk 23 is squeezed onto the clamping plate 42 outside the annular spring 4. After the clamping plate 42 is squeezed, it drives the moving block 41 to move. After the limiting wheel 43 on 41 contacts the inclined groove 62, it will drive the annular chuck 61 to rotate. When the annular chuck 61 rotates, a number of elastic arc-shaped edge strips 63 will be squeezed and will rise up, lifting the memory foam in the filling protection area. At this time, the memory foam will wrap around the trainee's legs for protection, further protecting the trainee's knees. The anti-touch protection method for the trainee's knees can help stabilize the knee joint, reduce the shaking and displacement of the knee during exercise, help maintain the normal physiological function of the knee, and reduce the risk of injury caused by joint instability. The trainee's patella is protected by the circular gasket 22, and the trainee's patella is further protected by the extrusion protection piece 6 in the filling protection area 5, which expands the protection range of the trainee's knees and further improves the safety performance during training.

[0049] In this embodiment, one end of several elastic arc-shaped edge strips 63 is arranged around the circumference of the annular clamp 12 with a height offset, and the other end of several elastic arc-shaped edge strips 63 is connected to the annular chuck 61 and is located within the filling protection area, and the filling protection area is filled with memory foam; the memory foam has good cushioning and breathability, does not affect the ventilation and heat dissipation of the legs of the training personnel, and can be adjusted according to the human body shape after contacting the legs and patella of the training personnel, providing comfortable support.

[0050] The usage method and advantages of the present invention: The usage method of the knee protection device for physical training is as follows, and the working process is as follows:

[0051] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 shown in:

[0052] S1: The training personnel wear the elastic knee pad 1 on the leg, so that the protection limit sleeve 13 is located at the patella of the training personnel, the circular gasket 22 is in close contact with the patella, and when the training personnel perform normal knee bending movements of the leg, the patella presses the circular gasket 22, and the annular limit sleeve 24 moves in the accommodating cavity 14 in the direction of the compression spring 25, so that the internal pressing gasket 21 can expand and contract under the action of the annular limit sleeve 24 and the compression spring 25;

[0053] S2: After the external pressing gasket 31 is externally pressed, the external pressing gasket 31 will move in the direction of the internal pressing gasket 21. There is a gap between the external pressing gasket 31 and the internal pressing gasket 21. Only when the training personnel fall, the external pressing gasket 31 and the internal pressing gasket 21 will relatively press;

[0054] S3: When the training personnel fall, the legs of the training personnel are in a bent state. After the elastic pressing disc 23 is pressed by the external pressing gasket 31, the outer edge of the elastic pressing disc 23 will be pressed and move in the direction of the annular spring 4. After the clamping plate 42 is pressed, it drives the moving block 41 to move. After several elastic arc-shaped edge strips 63 are pressed, they will tilt up, lifting the memory foam in the filling protection area. At this time, the memory foam will wrap around the legs of the training personnel for protection.

[0055] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A knee protection device for physical training, comprising an elastic knee pad (1), the outer surface of the elastic knee pad (1) being fixedly connected with a Velcro (11), and the elastic knee pad (1) being provided with a ring-shaped protection area at the patella of a human body; It is characterized in that The protection zone comprises an annular clamp (12) embedded in the elastic knee brace (1), a protection limit sleeve (13) is fixedly connected at the center of the annular clamp (12), an internal extrusion component (2) and an external extrusion component (3) are correspondingly arranged in the protection limit sleeve (13), the internal extrusion component (2) abuts against the patella of the human body, the external extrusion component (3) is located on the outer surface of the elastic knee brace (1) and is exposed to the outside, a filling protection zone (5) is arranged between the inner wall of the annular clamp (12) and the outer wall of the protection limit sleeve (13), and an extrusion protection component (6) is arranged at the position of the annular clamp (12) located in the filling protection zone (5).

2. A knee protection device for physical training according to claim 1, characterized in that: The protective limiting sleeve (13) has an accommodating cavity (14) formed therein, and the internal extrusion member (2) comprises an internal extrusion gasket (21) arranged in the accommodating cavity (14) of the protective limiting sleeve (13), wherein the internal extrusion gasket (21) is divided into a circular gasket (22) and a truncated cone-shaped elastic extrusion disk (23), wherein the elastic extrusion disk (23) is arranged in a truncated cone shape, and the circular gasket (22) abuts against the patella of a human body.

3. A knee protection device for physical training according to claim 2, characterized in that: An annular limiting sleeve (24) is slidably arranged on the inner wall of the accommodating cavity (14), a plurality of compression springs (25) are arranged between the outer wall of the annular limiting sleeve (24) and the inner wall of the accommodating cavity (14), and the plurality of compression springs (25) are arranged on the outer wall of the annular limiting sleeve (24) around the circumference of the annular limiting sleeve (24), a damping rod (26) is correspondingly arranged on the circular gasket (22), and the damping rod (26) abuts against the outer wall of the annular limiting sleeve (24) at one end away from the compression spring (25).

4. A knee protection device for physical training according to claim 3, characterized in that: The external extrusion member (3) comprises an external extrusion gasket (31) arranged opposite to the internal extrusion member (2); the external extrusion gasket (31) is slidably arranged in the accommodating cavity (14); a pressure spring (32) is sleeved on the external extrusion gasket (31); two ends of the pressure spring (32) are respectively connected to the external extrusion gasket (31) and the protective limit sleeve (13); one end of the external extrusion gasket (31) is arranged to be exposed to the outside facing the outer surface of the elastic knee pad (1); the other end of the external extrusion gasket (31) is arranged to face the direction of the protective limit sleeve (13); and the other end of the external extrusion gasket (31) is truncated in a cone shape to be pressed against the elastic extrusion disk (23).

5. A knee protection device for physical training according to claim 4, characterized in that: An annular spring (4) is arranged inside the annular limiting sleeve (24) and around the inner wall of the annular limiting sleeve (24); a plurality of movable blocks (41) are arranged on the outer wall of the protective limiting sleeve (13) and around the circumference of the protective limiting sleeve (13); a clamping plate (42) is arranged at one end of the plurality of movable blocks (41) toward the accommodating cavity (14); the clamping plate (42) is arranged outside the annular spring (4) and abuts against the outer wall edge of the inner elastic extrusion disk (23).

6. A knee protection device for physical training according to claim 5, characterized in that: A limiting wheel (43) is arranged at the other end of the plurality of moving blocks (41) away from the clamping plate (42); the extrusion protection member (6) comprises an annular clamp (61) rotatably arranged in an annular clamp (12); the annular clamp (61) is provided with oblique grooves (62) corresponding to the plurality of moving blocks (41); the limiting wheel (43) on the moving block (41) contacts the corresponding oblique grooves (62); and a plurality of elastic arc-shaped side strips (63) are arranged on the side of the annular clamp (12) facing the filling protection area (5).

7. A knee protection device for physical training according to claim 6, characterized in that: One end of a plurality of the elastic arc-shaped side strips (63) is arranged around the circumference of the annular clamp (12) in a staggered manner, and the other end of the plurality of the elastic arc-shaped side strips (63) is connected to the annular clamp (61) and is located in a filling protection area, which is filled with memory foam.

8. A method for using a knee protection device for physical training, using the knee protection device for physical training as claimed in any one of claims 1 to 7, characterized in that: The steps include: S1: The trainee wears the elastic knee pad (1) on his leg so that the protective limiting sleeve (13) is located at the trainee's patella and the circular gasket (22) is in close contact with the patella. When the trainee performs normal knee bending exercise, the patella squeezes the circular gasket (22) and the annular limiting sleeve (24) moves in the accommodating cavity (14) toward the direction of the compression spring (25), so that the internal compression gasket (21) can be expanded and contracted under the action of the annular limiting sleeve (24) and the compression spring (25); S2: After the external compression pad (31) is compressed by the outside, the external compression pad (31) moves toward the internal compression pad (21), and a gap exists between the external compression pad (31) and the internal compression pad (21). Only when the trainee falls down, the external compression pad (31) and the internal compression pad (21) will be compressed relative to each other; S3: When the trainee falls, the trainee's legs are bent, and the elastic extrusion disk (23) and the external extrusion gasket (31) are squeezed to cause the outer edge of the elastic extrusion disk (23) to be squeezed and moved in the direction of the annular spring (4). The clamping plate (42) is squeezed to drive the moving block (41) to move, and a plurality of elastic arc-shaped side strips (63) are squeezed to rise, and lift up the memory foam in the filling protection area. At this time, the memory foam will surround the trainee's legs for wrapping protection.

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