Split type upper and lower limb rehabilitation training device
By designing a split-type upper and lower limb rehabilitation trainer with height adjustment and various training movements, the adaptation problem caused by the difference in length between the upper and lower limbs of patients is solved, achieving better rehabilitation results and diversified training.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-06
- Publication Date
- 2026-03-17
AI Technical Summary
Existing rehabilitation equipment cannot meet the different upper and lower limb length differences of different patients, resulting in poor adaptability, affecting rehabilitation effects and limiting training movements.
A split-type upper and lower limb rehabilitation training device was designed, which includes a height adjustment mechanism, a stretching mechanism, a pressing mechanism and a support mechanism. By adjusting the height of the grip bar, the position of the U-shaped frame and the position of the support seat, it can adapt to the upper and lower limb length requirements of different patients, and meet diverse rehabilitation needs through a variety of training movements.
This improves the adaptability and practicality of rehabilitation training devices, enabling them to meet the individualized needs of different patients and enhance training effectiveness.
Smart Images
Figure CN223995338U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rehabilitation equipment technology, and in particular to a split-type upper and lower limb rehabilitation training device. Background Technology
[0002] Rehabilitation equipment primarily assists patients in performing passive movements and daily activities, promoting rehabilitation. Most are made of stainless steel, iron, plastic, or wood, manufactured through processes such as machining, welding, and injection molding to create the necessary parts. These parts are then assembled from several or even hundreds of components to form a rehabilitation device. The design is trending towards intelligent automation, and rehabilitation equipment can meet the needs of patients for passive movements of their upper and lower limbs in daily life.
[0003] Currently, when patients use rehabilitation equipment, they sit on the seat and then step on the foot pedals to perform rehabilitation training for their lower limbs. Upper limb training involves pushing the sliding seat back and forth with the arms. However, the horizontal position of the upper limbs and the length of the lower limbs vary from patient to patient. Currently, the horizontal height of the sliding seat and the seat are mostly fixed, which leads to different patients having different levels of adaptability when using the equipment. This affects the rehabilitation effect and the limited rehabilitation training movements cannot meet the diverse rehabilitation needs. Utility Model Content
[0004] The purpose of this invention is to provide a split-type upper and lower limb rehabilitation training device to solve at least one of the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a split-type upper and lower limb rehabilitation training device, including a base, a height adjustment mechanism, a stretching mechanism, two pressing mechanisms, a leg exercise mechanism, and a support mechanism;
[0006] The base has sliding grooves in the middle near both sides, and fixing bolt holes are symmetrically spaced at equal intervals on the top wall of the base near the front and rear ends of the two sliding grooves. The height adjustment mechanism is set on the right sliding groove, the support mechanism is set on the left sliding groove, the leg exercise mechanism is set on the top wall of the base between the height adjustment mechanism and the support mechanism, and the stretching mechanism is set to the left of the height adjustment mechanism.
[0007] The stretching mechanism includes a stretching shell, a fixed rod, a sliding member, and a first return spring. A first limiting port is provided in the middle of the front and rear side walls of the stretching shell. The sliding wall of the sliding member matches the inner cavity of the stretching shell and slides within the inner cavity. The two connecting walls of the sliding member extend from the first limiting port. The fixed rod is disposed in the inner cavity of the stretching shell and is fixedly connected to the side walls of the inner cavity of the stretching shell. The fixed rod slides through the front and rear side walls of the sliding member. The first return spring is sleeved on the fixed rod between the left side of the sliding wall of the sliding member and the inner cavity of the stretching shell, and the two ends of the first return spring are fixedly connected to the corresponding side wall of the sliding member and the inner cavity of the stretching shell, respectively. The two pressing mechanisms are symmetrically disposed at the ends of the two connecting walls of the sliding member.
[0008] Preferably, both pressing mechanisms include a pressing shell, a grip, a pull rod, a limiting block, a limiting rod, and a second return spring. The fixed wall of the pressing shell is fixedly connected to the end of the sliding member connecting wall near the right side. A second limiting port is provided in the middle of the pressing shell side wall near the right side, opposite to the fixed wall. The limiting block matches the inner cavity of the pressing shell and slides within the inner cavity. The limiting rod is disposed in the inner cavity of the pressing shell, and its two ends are fixedly connected to the two side walls of the inner cavity of the pressing shell, respectively. The second return spring is sleeved on the limiting rod between the left side of the limiting block and the inner cavity of the pressing shell. The two ends of the second return spring are fixedly connected to the corresponding side wall of the limiting block and the inner cavity of the pressing shell, respectively. The grip is fixedly connected to the outer wall of the pressing shell near the left side of the second limiting port. One end of the pull rod passes through the second limiting port and is fixedly connected to the limiting block.
[0009] Preferably, the height adjustment mechanism comprises a vertically placed U-shaped frame, a drive motor, a threaded rod, two limiting slide rods, and a moving block. The drive motor is fixedly connected to the top wall of the U-shaped frame connecting wall. One end of the threaded rod is fixedly connected to the output end of the drive motor, and the other end passes through the U-shaped frame connecting wall. Bearings are fixedly fitted near both ends of the threaded rod, and the outer rings of the bearings are embedded in the two connecting walls of the U-shaped frame. The two limiting slide rods are respectively located at the front and rear ends of the threaded rod. One end of the two limiting slide rods is fixedly connected to the top connecting wall of the U-shaped frame, and the other end is fixedly connected to the bottom connecting wall of the U-shaped frame. A threaded hole is opened in the middle of the top of the moving block, and the threaded rod passes through the threaded hole and is threadedly connected to the threaded hole. Sliding holes are opened near the sides of the top of the moving block, and the two limiting slide rods slide through the corresponding sliding holes. A first slider that matches the left sliding groove is fixedly connected to the bottom wall of the bottom connecting wall of the U-shaped frame, and the first slider slides in the left sliding groove. The left side wall of the moving block is fixedly connected to the right side wall of the stretch shell.
[0010] Preferably, the support mechanism includes a support base and a seat, with the bottom of the seat fixedly connected to the top of the support base, and a second slider that matches the left side slide groove is fixedly connected to the middle of the bottom wall of the support base, and the second slider slides within the left side slide groove.
[0011] Preferably, a fixing plate is fixedly connected to both ends of the bottom connecting wall of the U-shaped frame and the left side of the support near both ends. Each fixing plate has two mounting bolt holes, and the positions of the two mounting bolt holes match the positions of the corresponding two fixing bolt holes. A fixing bolt is threadedly connected between each mounting bolt hole and the corresponding fixing bolt hole.
[0012] Preferably, the leg exercise mechanism includes a box and two foot pedals. The bottom wall of the box is fixedly connected to the top wall of the base. The two foot pedals are symmetrically arranged at the middle positions of both ends of the box. Bearings are fixedly fitted on the ends of the two foot pedals near the box, and the bearings are embedded in the outer ring of the box.
[0013] The beneficial effects of this utility model are as follows:
[0014] By adjusting the height of the grip bar, it can be used by patients with different upper limb heights. By adjusting the position of the U-shaped frame and moving the grip bar towards the user, it can be used by patients with different upper limb lengths. By adjusting the position of the support base, it can be used by patients with different lower limb lengths. By making various adjustments to this training device, different patients can be adjusted to a suitable training position, thus adapting it to different patients and increasing the range of applications of the device.
[0015] Users can perform rehabilitation training on their fingers by gripping and pulling the lever. By adding different training movements, the device can meet the needs of patients with different requirements, greatly improving its practicality. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the stretch shell of this utility model;
[0018] Figure 3 This is a cross-sectional view of the stretch shell of this utility model;
[0019] Figure 4 This is a cross-sectional view of the pressing shell of this utility model;
[0020] Figure 5 This is a three-dimensional structural diagram of the fixing plate of this utility model;
[0021] Figure 6 This is a three-dimensional structural diagram of the base of this utility model;
[0022] Figure 7 This is an exploded view of the sliding component and the limiting block of this utility model;
[0023] Figure 8 This is a three-dimensional structural diagram of the frame and movable block of this utility model.
[0024] In the diagram: 1. Base; 2. Support seat; 3. Height adjustment mechanism; 31. U-shaped frame; 32. Drive motor; 33. Threaded rod; 34. Limiting slide rod; 35. Moving block; 4. Tensioning mechanism; 41. Tensioning shell; 411. First limiting port; 42. Fixed rod; 43. Sliding part; 44. First return spring; 5. Pressing mechanism; 51. Pressing shell; 511. Second limiting port; 52. Grip rod; 53. Pull rod; 54. Limiting block; 55. Limiting rod; 56. Second return spring; 6. Foot pedal; 7. Fixing bolt hole; 8. Fixing bolt; 9. Fixing plate; 10. Slide groove; 11. Box body; 12. Seat; 13. First slider; 14. Second slider. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] This utility model provides, for example Figure 1-8 The split-type upper and lower limb rehabilitation training device shown includes a base 1, a height adjustment mechanism 3, a stretching mechanism 4, two pressing mechanisms 5, a leg exercise mechanism, and a support mechanism.
[0027] The base 1 has a sliding groove 10 in the middle near both sides. The top wall of the base 1 near the front and rear ends of the two sliding grooves 10 has symmetrically spaced fixing bolt holes 7. The height adjustment mechanism 3 is set on the right sliding groove 10, the support mechanism is set on the left sliding groove 10, the leg exercise mechanism is set on the top wall of the base 1 between the height adjustment mechanism 3 and the support mechanism, and the stretching mechanism 4 is set on the left side of the height adjustment mechanism 3.
[0028] The stretching mechanism 4 includes a stretching shell 41, a fixed rod 42, a sliding member 43, and a first return spring 44. A first limiting port 411 is provided in the middle of the front and rear side walls of the stretching shell 41. The sliding wall of the sliding member 43 matches the inner cavity of the stretching shell 41 and slides in the inner cavity of the stretching shell 41. The two connecting walls of the sliding member 43 extend out from the first limiting port 411 respectively. The fixed rod 42 is disposed in the inner cavity of the stretching shell 41 and is fixedly connected to the side walls of the inner cavity of the stretching shell 41 respectively. The fixed rod 42 slides through the front and rear side walls of the sliding member 43. The first return spring 44 is sleeved on the fixed rod 42 between the left side of the sliding wall of the sliding member 43 and the inner cavity of the stretching shell 41, and the two ends of the first return spring 44 are fixedly connected to the corresponding side wall of the sliding member 43 and the inner cavity of the stretching shell 41 respectively. Two pressing mechanisms 5 are symmetrically disposed at the ends of the two connecting walls of the sliding member 43.
[0029] Before using the device, connect the drive motor 32 (a bidirectional motor) to the power supply. The drive motor 32 can be controlled via an external controller. During use, the user sits on the seat 12, then places both feet on the two footrests 6. The user performs leg rehabilitation training by pedaling the footrests 6. Adjust the U-shaped frame 31 and the stretching shell 41 according to the user's arm length and horizontal position. Start the drive motor 32 via the controller to rotate the threaded rod 33. Under the action of the threaded hole and the limiting slide rod 34, the rotation of the threaded rod 33 causes the moving block 35 to move up and down for height adjustment. After moving the grip bar 52 to the level of the user's arm, turn off the drive motor 32. Then move the U-shaped frame 31 to move the stretching shell 41 towards the user, allowing the user to grip the grip bar 52. Stop moving the U-shaped frame 31, and then screw the fixing bolt 8 into the fixing bolt hole 7 through the mounting bolt hole on the fixing plate 9 to fix the U-shaped frame 31. At this time, the user holds the grip bar 52 with both hands and pulls or pushes the grip bar 52. Pressing the shell 51 causes the sliding part 43 to move along the fixing rod 42 (the first limiting port 411 limits the two connecting walls of the sliding part 43). At this time, the first return spring 44 is stretched or compressed. This is repeated to facilitate the user's upper limb rehabilitation training. When the user needs to perform rehabilitation training on the fingers, the user places their palm on the grip bar 52, grips the pull rod 53 with their fingers and pulls the pull rod 53. At this time, the pull rod 53 causes the limiting block 54 to move along the limiting rod 55 (the second limiting port 511 limits the pull rod 53). The second return spring 56 is compressed. This is repeated to facilitate the user's finger rehabilitation training.
[0030] Both pressing mechanisms 5 include a pressing shell 51, a grip 52, a pull rod 53, a limiting block 54, a limiting rod 55, and a second return spring 56. The fixed wall of the pressing shell 51 is fixedly connected to the end of the connecting wall of the sliding member 43 near the right side. A second limiting port 511 is provided in the middle of the side wall of the pressing shell 51 opposite to the fixed wall near the right side. The limiting block 54 matches the inner cavity of the pressing shell 51 and slides within the inner cavity of the pressing shell 51. The limiting rod 55 is disposed within the inner cavity of the pressing shell 51 and the limiting rod... Both ends of 55 are fixedly connected to the two side walls of the inner cavity of the pressing shell 51, respectively. The second return spring 56 is sleeved on the limiting rod 55 between the left side of the limiting block 54 and the inner cavity of the pressing shell 51. Both ends of the second return spring 56 are fixedly connected to the corresponding side wall of the limiting block 54 and the inner cavity of the pressing shell 51, respectively. The movable grip 52 is fixedly connected to the outer wall of the pressing shell 51 near the left side of the second limiting port 511. One end of the pull rod 53 passes through the second limiting port 511 and is fixedly connected to the limiting block 54.
[0031] When finger rehabilitation training is needed, the user places their palm on the grip bar 52, grips the pull bar 53 with their fingers, and pulls the pull bar 53. At this time, the pull bar 53 drives the limiting block 54 to move along the limiting rod 55 (the inner cavity of the pressing shell 51 limits the limiting block 54, and the second limiting port 511 limits the pull bar 53). The second return spring 56 is compressed, and this process is repeated to facilitate the user's finger rehabilitation training.
[0032] The height adjustment mechanism 3 consists of a vertically placed U-shaped frame 31, a drive motor 32, a threaded rod 33, two limiting slide rods 34, and a moving block 35. The drive motor 32 is fixedly connected to the top wall of the connecting wall of the U-shaped frame 31. One end of the threaded rod 33 is fixedly connected to the output end of the drive motor 32, and the other end passes through the connecting wall of the U-shaped frame 31. Bearings are fixedly fitted near both ends of the threaded rod 33, and the outer rings of the bearings are embedded in the two connecting walls of the U-shaped frame 31. The two limiting slide rods 34 are respectively located at the front and rear ends of the threaded rod 33, and one end of the two limiting slide rods 34 is connected to the U-shaped frame 31. The top connecting wall is fixedly connected and the other end is fixedly connected to the bottom connecting wall of the U-shaped frame 31. A threaded hole is opened in the middle of the top of the moving block 35. The threaded rod 33 passes through the threaded hole and is threadedly connected to the threaded hole. A sliding hole is opened in the middle of the top of the moving block 35 near both sides. Two limiting sliding rods 34 slide through the corresponding sliding holes respectively. The bottom wall of the bottom connecting wall of the U-shaped frame 31 is fixedly connected to the first slider 13 that matches the left sliding groove 10 and the first slider 13 slides in the left sliding groove 10. The left side wall of the moving block 35 is fixedly connected to the right side wall of the stretch shell 41.
[0033] The controller starts the drive motor 32 to drive the threaded rod 33 to rotate. The bearing facilitates the rotation of the threaded rod 33. Under the action of the threaded hole and the limiting slide bar 34, when the threaded rod 33 rotates, it will drive the moving block 35 to move up and down to adjust the height, thereby adjusting the height of the stretch shell 41 to the level of the user's arm. Then, unscrew the fixing bolt 8 on the fixing plate 9 to move the U-shaped frame 31. When moving the U-shaped frame 31, the first slider 13 slides in the slide groove 10 on the right side to limit the U-shaped frame 31. When the user can hold the grip bar 52, stop moving the U-shaped frame 31. Then, screw the fixing bolt 8 into the fixing bolt hole 7 through the mounting bolt hole on the fixing plate 9 to fix the U-shaped frame 31.
[0034] The support mechanism includes a support base 2 and a seat 12. The bottom of the seat 12 is fixedly connected to the top of the support base 2. A second slider 14 that matches the left slide groove 10 is fixedly connected to the middle of the bottom wall of the support base 2, and the second slider 14 slides in the left slide groove 10.
[0035] The user sits on the seat 12 and places both feet on the two foot pedals 6. By pedaling the foot pedals 6, the user can perform leg rehabilitation training. When the user's legs are long, the fixing bolts 8 on the left fixing plate 9 of the support seat 2 can be unscrewed from the fixing bolt holes 7 to move the support seat 2. When the support seat 2 is moved, the second slider 14 moves in the sliding groove 10 on the left side to limit the support seat 2. After moving to the appropriate position, the fixing bolts 8 are screwed into the fixing bolt holes 7 through the mounting bolt holes on the fixing plate 9 to fix the support seat 2. This can meet the needs of users with different leg lengths.
[0036] At both ends of the bottom connecting wall of the U-shaped frame 31 and the left side of the support base 2 near the two ends, a fixing plate 9 is fixedly connected. Each fixing plate 9 has two mounting bolt holes, and the positions of the two mounting bolt holes match the positions of the two corresponding fixing bolt holes 7. A fixing bolt 8 is threadedly connected between each mounting bolt hole and the corresponding fixing bolt hole 7.
[0037] By unscrewing the fixing bolts 8 on the fixing plate 9, the U-shaped frame 31 and the support base 2 can be moved. Then, the fixing bolts 8 can be screwed into the fixing bolt holes 7 through the mounting bolt holes on the fixing plate 9 to fix the U-shaped frame 31 and the support base 2.
[0038] The leg exercise mechanism includes a box 11 and two foot pedals 6. The bottom wall of the box 11 is fixedly connected to the top wall of the base 1. The two foot pedals 6 are symmetrically arranged at the middle positions of both ends of the box 11. Bearings are fixedly fitted on the ends of the two foot pedals 6 near the box 11, and the bearings are embedded in the outer ring of the box 11.
[0039] The bearings on the housing 11 fix the foot pedals 6. The user places both feet on the two foot pedals 6 respectively, and uses the pedals to perform leg rehabilitation training.
[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A split type upper and lower limb rehabilitation training device, characterized in that: It includes base (1), height adjusting mechanism (3), stretching mechanism (4), two pressing mechanisms (5), leg exercise mechanism and support mechanism; The middle of the base (1) is provided with a sliding groove (10) near both sides, the top wall of the base (1) near the front and rear ends of the two sliding grooves (10) is provided with fixed bolt holes (7) at equal intervals, the height adjusting mechanism (3) is arranged on the right sliding groove (10), the support mechanism is arranged on the left sliding groove (10), the leg exercise mechanism is arranged on the top wall of the base (1) between the height adjusting mechanism (3) and the support mechanism, and the stretching mechanism (4) is arranged on the left side of the height adjusting mechanism (3). The stretching mechanism (4) comprises a stretching shell (41), a fixed rod (42), a sliding piece (43) and a first reset spring (44), the middle of the front and rear side walls of the stretching shell (41) is provided with a first limiting opening (411), the sliding wall of the sliding piece (43) is matched with the inner cavity of the stretching shell (41) and slides in the inner cavity of the stretching shell (41), the two connecting walls of the sliding piece (43) extend out from the first limiting opening (411) respectively, the fixed rod (42) is arranged in the inner cavity of the stretching shell (41), and the fixed rod (42) is fixedly connected with the two side walls of the inner cavity of the stretching shell (41) respectively, the fixed rod (42) slides through the front and rear side walls of the sliding piece (43), the first reset spring (44) is sleeved on the fixed rod (42) between the left side wall of the sliding piece (43) and the inner cavity of the stretching shell (41), and the two ends of the first reset spring (44) are fixedly connected with the corresponding side wall of the sliding piece (43) and the inner cavity of the stretching shell (41) respectively, and the two pressing mechanisms (5) are symmetrically arranged at the end portions of the two connecting walls of the sliding piece (43).
2. The split upper and lower limb rehabilitation training device according to claim 1, characterized in that: The two pressing mechanisms (5) each comprise a pressing shell (51), a handle rod (52), a pull rod (53), a limiting block (54), a limiting rod (55) and a second reset spring (56), the end portion of the connecting wall of the sliding piece (43) is fixedly connected with the fixed wall of the pressing shell (51) near the right side, the side wall of the pressing shell (51) opposite to the fixed wall is provided with a second limiting opening (511) near the right side in the middle, the limiting block (54) is matched with the inner cavity of the pressing shell (51) and slides in the inner cavity of the pressing shell (51), the limiting rod (55) is arranged in the inner cavity of the pressing shell (51), and the two ends of the limiting rod (55) are fixedly connected with the two side walls of the inner cavity of the pressing shell (51) respectively, the second reset spring (56) is sleeved on the limiting rod (55) between the left side wall of the limiting block (54) and the inner cavity of the pressing shell (51), the two ends of the second reset spring (56) are fixedly connected with the corresponding side wall of the limiting block (54) and the inner cavity of the pressing shell (51) respectively, the movable fixed connection of the handle rod (52) is arranged on the outer wall of the pressing shell (51) near the left side of the second limiting opening (511), and one end of the pull rod (53) penetrates the second limiting opening (511) and is fixedly connected with the limiting block (54).
3. The split upper and lower limbs rehabilitation training device according to claim 2, characterized in that: The height adjusting mechanism (3) is vertically placed in the U-shaped frame (31), the driving motor (32), the threaded rod (33), the two limiting slide rods (34) and the moving block (35), the driving motor (32) is fixedly connected to the top wall of the connecting wall of the U-shaped frame (31), one end of the threaded rod (33) is fixedly connected with the output end of the driving motor (32) and the other end penetrates through the connecting wall of the U-shaped frame (31), bearings are fixedly sleeved on the positions close to the two ends of the threaded rod (33) and the outer rings of the bearings are embedded on the two connecting walls of the U-shaped frame (31), the two limiting slide rods (34) are arranged at the front and rear ends of the threaded rod (33) respectively, one end of each of the two limiting slide rods (34) is fixedly connected with the top connecting wall of the U-shaped frame (31) and the other end is fixedly connected with the bottom connecting wall of the U-shaped frame (31), a threaded hole is formed in the middle of the top of the moving block (35), the threaded rod (33) penetrates through the threaded hole and is threadedly connected with the threaded hole, slide holes are formed in the middle of the top of the moving block (35) and close to the positions of the two sides, the two limiting slide rods (34) slide through the corresponding slide holes respectively, the bottom wall of the bottom connecting wall of the U-shaped frame (31) is fixedly connected with the first sliding block (13) matched with the left slide groove (10) and the first sliding block (13) slides in the left slide groove (10), and the left side wall of the moving block (35) is fixedly connected with the right side wall of the stretching shell (41).
4. The split upper and lower limb rehabilitation training device according to claim 3, characterized in that: The supporting mechanism comprises a supporting seat (2) and a seat (12), the bottom of the seat (12) is fixedly connected to the top of the supporting seat (2), and the middle of the bottom wall of the supporting seat (2) is fixedly connected with the second sliding block (14) matched with the left slide groove (10) and the second sliding block (14) slides in the left slide groove (10).
5. The split upper and lower limbs rehabilitation training device according to claim 4, characterized in that: The two ends of the bottom connecting wall of the U-shaped frame (31) are fixedly connected with one fixed plate (9) close to the positions of the two ends of the left side of the supporting seat (2), two mounting bolt holes are formed in each fixed plate (9) and the positions of the two mounting bolt holes coincide with the positions of the corresponding two fixed bolt holes (7), and one fixed bolt (8) is threadedly connected between each mounting bolt hole and the corresponding fixed bolt hole (7).
6. The split upper and lower limbs rehabilitation training device according to claim 5, characterized in that: The leg exercise mechanism comprises a box body (11) and two foot pedals (6), the bottom wall of the box body (11) is fixedly connected with the top wall of the base (1), the two foot pedals (6) are symmetrically arranged at the middle positions of the two ends of the box body (11), and bearings are fixedly sleeved on the ends of the two foot pedals (6) close to the box body (11) and the inner rings of the bearings are embedded on the box body (11).