Leg exercise device

Abstract

The present invention relates to the technical field of elderly care, and discloses a leg exercise device, comprising a support seat with a slide groove provided therein; a slide seat installed in the slide groove, with a pressure spring provided between the slide seat and the slide groove; a fixed ring provided at one end of the slide seat; a movable disc installed in the fixed ring, with adjustment grooves provided on both sides of the movable disc, and a foot pedal provided on one side of the adjustment groove; a plurality of adjustment mechanisms provided in the adjustment groove; and a fixing mechanism provided at one end of the slide seat. The above-mentioned leg exercise device, through the coordinated arrangement of structures such as the pressure spring, the fixed ring, the movable disc, the adjustment groove, the foot pedal and the adjustment mechanism, allows the elderly to place their feet on the end of the foot pedal, and then push the foot pedal in the direction of the pressure spring, so that the foot pedal drives the slide seat to slide in the slide groove and squeeze the pressure spring, and then the elastic action of the pressure spring reacts to the slide seat, thereby exercising the elderly's legs.

Description

Technical Field

[0001] The present invention relates to the technical field of elderly care, and in particular to a leg exercise device. Background Art

[0002] Geriatric diseases, also known as elderly diseases, refer to diseases related to aging that people suffer from in old age. The number of elderly people suffering from these diseases is greater than that of young people. This is mainly because after people enter old age, the body's tissue structure further ages, the functions of various organs gradually become impaired, the body's resistance gradually weakens, and the ability to move decreases. The leg muscles of the elderly will gradually weaken with age, and in the later stages they may even be unable to complete the function of independent walking, so they need to strengthen their leg muscles.

[0003] Patent application: (CN202220330801.4) discloses a leg exercise device for geriatric care, comprising a base, a pad provided at the upper end of the base, a mounting bracket provided at the upper end of the base on the side of the pad, two sets of mounting brackets, and mounting slots provided at the middle positions of the two sets of mounting brackets, wherein an exercise mechanism is provided inside the mounting slot. By providing the exercise mechanism, the elderly can be exercised, and by moving the position of the sliding sleeve, the sliding sleeve can compress the first pressure spring, so that the first pressure spring can adjust the intensity of the exercise, and then the intensity of the exercise can be adjusted according to the degree of recovery of the elderly, thereby achieving a better leg exercise effect for the elderly.

[0004] However, the device only exercises the elderly's legs in one way through the exercise mechanism. The structure of the exercise mechanism is relatively simple, and the exercise form is also relatively single, which cannot meet the exercise needs of the elderly's leg muscles, thereby making the exercise effect of the elderly's leg muscles poor. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention proposes a leg exercise device to solve the problem that the existing device only exercises the legs of the elderly in one way through an exercise mechanism, the structure of the exercise mechanism is relatively simple, and the exercise form is also relatively single, which cannot meet the exercise needs of the leg muscles of the elderly.

[0006] A leg exercise device includes a support seat with a slide groove inside; a slide seat slidably installed in the slide groove, and a pressure spring is provided between the slide seat and the slide groove; a fixed ring is provided at one end of the slide seat passing through the slide groove; a movable disk is rotatably installed in the fixed ring, and adjustment grooves are provided on both sides of the movable disk, and a foot pedal is provided on the side of the adjustment groove away from the movable disk; multiple adjustment mechanisms are provided in the adjustment groove, and the movement of the adjustment mechanisms drives the foot pedal to slide in the adjustment groove to change the placement position of the foot pedal; and a fixing mechanism is provided at one end of the slide seat away from the pressure spring, and the fixing mechanism is used to allow the exerciser to selectively lock or release the slide.

[0007] Furthermore, an adjusting rod is rotatably installed in the slide groove, and the pressure spring is sleeved on the outside of the adjusting rod. The end of the adjusting rod away from the slide seat is connected to the adjusting block through a threaded sleeve, and the two ends of the pressure spring are fixedly connected to the slide seat and the adjusting block respectively. The end of the adjusting rod close to the adjusting block passes through the slide groove and emerges from the support seat.

[0008] Furthermore, the number of the pressure spring, the adjustment rod and the adjustment block is set to two.

[0009] Furthermore, one end of the adjusting rod located outside the support seat is fixedly connected to a first bevel gear, and a dual-axis motor is provided on the side of the support seat close to the first bevel gear. Both output shafts of the dual-axis motor are fixedly connected to a second bevel gear, and the second bevel gear is meshed with the first bevel gear.

[0010] Furthermore, the adjustment mechanism includes a sliding column, a sliding rod and a clamping assembly. The sliding column is slidably installed in the adjustment groove, and the end of the sliding column facing the foot pedal is fixedly connected to the sliding rod, and the end of the sliding rod away from the sliding column is connected to the foot pedal through the clamping assembly.

[0011] Furthermore, the clamping assembly includes a clamping plate and a tension spring, the clamping plate is slidably installed on the outside of the slide rod, and the two ends of the tension spring are fixedly connected to the clamping plate and the slide column respectively, the end of the clamping plate away from the slide rod is rotatably connected to the foot pedal, and multiple clamping grooves connected to the adjustment grooves are provided on both sides of the movable disk, and the clamping grooves are clamped to any of the clamping plates.

[0012] Furthermore, a receiving groove is provided in the movable disk, in which the first gear and the second gear are rotatably installed respectively, and an inner ring gear is provided on the inner side wall of the receiving groove, the inner ring gear and the first gear are both engaged with the second gear, and the first gear is provided in cooperation with the sliding column through a connecting member.

[0013] Furthermore, the connecting member includes a rotating shaft and a plug-in ball, and a placement groove is provided at one end of the rotating shaft that passes through the accommodating groove. The plug-in ball is slidably installed in the placement groove, and a compression spring is provided between the plug-in ball and the placement groove. The sliding column has a plug-in groove on one side facing the adjustment groove, and the plug-in groove is cooperated with the plug-in ball.

[0014] Furthermore, the fixing mechanism includes two elastic locking strips and an unlocking assembly for unlocking the elastic locking strips. The elastic locking strips are fixedly connected to the end of the slide seat. The slide groove is symmetrically provided with a limit strip near one end of the elastic locking strip. The limit strip is arranged in cooperation with the elastic locking strip.

[0015] Furthermore, the unlocking assembly includes a push block and a return spring, the two ends of the return spring are fixedly connected to the push block and the inner wall of the slide groove respectively, the push block is slidably installed in the slide groove, and a groove is provided at one end of the push block facing the elastic locking strip.

[0016] The invention adopting the above technical solution has the following advantages:

[0017] The pedals are adapted to move the legs when the user presses them forward and the pedals are engaged, and the pedals are adapted to move the legs when the user presses them forward and the user presses them back and forth.

[0018] 2. The present invention provides an adjusting rod and an adjusting block, and can rotate the adjusting rod to drive the adjusting block to slide in the slide groove and squeeze the pressure spring. Then, the exercise strength of the pressure spring can be adjusted according to the degree of recovery of the legs of different elderly people, thereby improving the practicality of the device.

[0019] 3. The present invention sets a first bevel gear, a second bevel gear and a dual-axis motor, starts the dual-axis motor, so that the output shaft of the dual-axis motor drives the two second bevel gears to rotate, and then drives the two first bevel gears and the adjustment rod to rotate through transmission, and then drives the two adjustment blocks to move synchronously, so as to improve the adjustment efficiency of the device.

[0020] 4. The present invention provides a sliding column, a sliding rod and a clamping assembly. The sliding column can drive the sliding rod and the foot pedal to slide in the adjustment groove, thereby changing the placement of the foot pedal, and fix the foot pedal after adjustment through the clamping assembly, thereby facilitating the elderly to perform different forms of leg exercises, thereby improving the exercise effect of the elderly's leg muscles.

[0021] 5. The present invention provides a clamping plate, a tension spring and a clamping groove. When the elderly need to adjust the foot pedal, they first pull the foot pedal toward the outside of the adjustment groove, so that the clamping plate is disengaged from the clamping groove and drives the tension spring to achieve a stretching effect. After that, the placement position of the foot pedal can be adjusted. After the adjustment is completed, the foot pedal is released, and then the clamping plate is clamped with another clamping groove under the elastic action of the tension spring, thereby facilitating the fixing of the position of the foot pedal and facilitating another form of leg exercise for the elderly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the specific embodiments. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0023] Figure 1 This is a schematic structural diagram of a leg exercise device according to the present invention;

[0024] Figure 2 This is a schematic cross-sectional view of a support base in a leg exercise device of the present invention;

[0025] Figure 3 This is a schematic structural diagram of a leg exercise device according to the present invention when the slide seat is fixed;

[0026] Figure 4 This is a schematic structural diagram of an initial state of a foot pedal in a leg exercise device of the present invention;

[0027] Figure 5 This is a schematic diagram of the state structure of the foot pedal in a leg exercise device of the present invention when in use Figure 1 ;

[0028] Figure 6 This is a schematic diagram of the state structure of the foot pedal in a leg exercise device of the present invention when in use Figure 2 ;

[0029] Figure 7 This is a side view of the fixed ring in a leg exercise device of the present invention. Figure 1 ;

[0030] Figure 8 This is a side view of the fixed ring in a leg exercise device of the present invention. Figure 2 ;

[0031] Figure 9 This is a schematic structural diagram of a foot pedal and an adjustment mechanism in a leg exercise device of the present invention;

[0032] Figure 10 This is a schematic structural diagram of a receiving slot in a leg exercise device of the present invention;

[0033] Reference numerals:

[0034] Support seat 1, slide 101,

[0035] Slide 2, pressure spring 21,

[0036] Fixed ring 3, movable plate 31, adjustment slot 32, foot pedal 33,

[0037] Adjustment rod 41, adjustment block 42,

[0038] First bevel gear 51, dual-axis motor 52, second bevel gear 53,

[0039] Sliding column 61, sliding rod 62,

[0040] Snap plate 71, tension spring 72, snap groove 73,

[0041] Accommodating groove 81, first gear 82, second gear 83, inner gear ring 84,

[0042] Rotating shaft 91, plug-in ball 92, placement slot 93, compression spring 94, plug-in slot 95,

[0043] Elastic locking strip 10 , limiting strip 11 , push block 12 , return spring 13 , groove 14 . DETAILED DESCRIPTION

[0044] The following embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0045] like Figures 1 to 10As shown, a leg exercise device of the present invention includes a support seat 1, which is provided with a slide groove 101 inside, and a seat is installed on the left side of the upper surface of the support seat 1 through a hydraulic cylinder; a slide seat 2 is slidably installed in the slide groove 101, and a pressure spring 21 is provided between the slide seat 2 and the right side wall of the slide groove 101; a fixed ring 3 is provided at one end of the slide seat 2 passing through the slide groove 101; a movable disk 31 is rotatably connected to the inside of the fixed ring 3, and there is a certain friction force between the rotation of the movable disk 31 and the fixed ring 3, so that the movable disk 31 is relatively fixed. 3 is not easy to rotate at will. Adjustment slots 32 are provided on both sides of the movable plate 31. A footrest 33 is provided on the side of the adjustment slot 32 away from the movable plate 31. Foot slots are provided on the sidewalls and top of the footrest 33. Two adjustment mechanisms are provided in the adjustment slots 32. The movement of the adjustment mechanisms drives the footrest 33 to slide in the adjustment slots 32 to change the placement of the footrest 33. A fixing mechanism is provided at the end of the slide 2 away from the pressure spring 21. The fixing mechanism is used to allow the exerciser to selectively lock or release the slide 2. Through the coordinated arrangement of the support seat 1, the slide groove 101, the slide seat 2, the pressure spring 21, the fixing ring 3, the movable plate 31, the adjustment groove 32, the foot pedal 33, the adjustment mechanism and the fixing mechanism, the elderly can place their feet on the ends of the foot pedal 33, and then push the foot pedal 33 in the direction of the pressure spring 21, so that the foot pedal 33 drives the slide seat 2 to slide in the slide groove 101 and squeeze the pressure spring 21, and then the elastic action of the pressure spring 21 reacts to the slide seat 2, thereby exercising the elderly's legs; at the same time, the elderly can also The slide 2 is fixed by a fixing mechanism, and the foot pedal 33 is driven to slide in the adjusting groove 32 by the adjusting component, thereby changing the placement position of the foot pedal 33, so that the two foot pedals 33 are changed into a vertically symmetrical arrangement. After that, the elderly place their feet on the foot pedals 33, and then rotate the foot pedals 33 to drive the movable disk 31 to rotate in the fixed ring 3 to achieve different types of leg exercises; thereby, the exercise form of the device is diversified, and then the exercise needs of the leg muscles of the elderly are met, and the exercise effect of the leg muscles of the elderly is better.

[0046] An adjustment rod 41 is rotatably mounted within the chute 101, and a pressure spring 21 is sleeved on the outside of the adjustment rod 41. An adjustment block 42 is threadedly sleeved on the end of the adjustment rod 41 away from the slide 2. The adjustment block 42 is slidably mounted within the chute 101. The left and right ends of the pressure spring 21 are fixedly connected to the end of the slide 2 and the end of the adjustment block 42, respectively. The end of the adjustment rod 41 closest to the adjustment block 42 passes through the chute 101 and emerges from the support base 1. By providing the adjustment rod 41 and the adjustment block 42, the adjustment rod 41 can be rotated, thereby driving the adjustment block 42 to slide within the chute 101 and compressing the pressure spring 21. The exercise intensity of the pressure spring 21 can then be adjusted to suit the degree of leg recovery of different elderly people, thereby improving the practicality of the device.

[0047] The number of the pressure spring 21 , the adjusting rod 41 and the adjusting block 42 is set to two, and they are arranged symmetrically to provide better adjustment and sliding effects.

[0048] One end of the adjustment rod 41 located outside the support base 1 is fixedly connected to a first bevel gear 51. A mounting box is fixedly installed on the side of the support base 1 near the first bevel gear 51. A dual-axis motor 52 is fixedly installed in the mounting box. The two output shafts of the dual-axis motor 52 are both fixedly connected to the second bevel gear 53. The first bevel gear 51 is located in the mounting box, and the second bevel gear 53 is meshed with the first bevel gear 51. By arranging the first bevel gear 51, the second bevel gear 53, and the dual-axis motor 52, and starting the dual-axis motor 52, the output shaft of the dual-axis motor 52 drives the two second bevel gears 53 to rotate, which in turn drives the two first bevel gears 51 and the adjustment rod 41 to rotate through transmission, thereby driving the two adjustment blocks 42 to move synchronously, thereby improving the adjustment efficiency of the device.

[0049] The adjustment mechanism includes a slide post 61, a slide rod 62, and a snap assembly. The slide post 61 is slidably mounted within the adjustment slot 32. The end of the slide post 61 facing the footrest 33 is fixedly connected to the slide rod 62, while the end of the slide rod 62 facing away from the slide post 61 is connected to the footrest 33 via the snap assembly. By providing the slide post 61, slide rod 62, and snap assembly, the slide post 61 can drive the slide rod 62 and footrest 33 to slide within the adjustment slot 32, thereby changing the placement of the footrest 33. The snap assembly secures the footrest 33 after adjustment, thus facilitating different leg exercises for the elderly and improving their leg muscle training.

[0050] The clamping assembly includes a clamping plate 71 and a tension spring 72. The clamping plate 71 is slidably installed on the outside of the slide rod 62, and the front and rear ends of the tension spring 72 are fixedly connected to the clamping plate 71 and the slide column 61 respectively. The end of the clamping plate 71 away from the slide rod 62 is rotatably connected to the foot pedal 33. Two clamping grooves 73 connected to the adjustment groove 32 are provided on the left and right sides of the movable plate 31. The clamping grooves 73 are located on the left and right sides of the adjustment groove 32. The two clamping grooves 73 are symmetrically arranged, and the clamping grooves 73 are clamped to any clamping plate 71. When the footrest 33 is in the unlocking state, the locking plate 71 is released, and the locking plate 71 is locked with the other locking groove 73 under the elastic action of the tension spring 72, thereby facilitating fixing the position of the footrest 33 and facilitating the elderly to perform another form of leg exercise.

[0051] The movable disc 31 has a receiving slot 81 formed within it, within which a first gear 82 and a second gear 83 are rotatably mounted. The diameter of the first gear 82 is much larger than that of the second gear 83, thereby slowing the rotation of the movable disc 31. An inner ring gear 84 is provided on the inner sidewall of the receiving slot 81, and both the inner ring gear 84 and the first gear 82 mesh with the second gear 83. The front and rear ends of the first gear 82 are coupled to the slide post 61 via connectors, and the two connectors are symmetrically arranged vertically. By providing the receiving slot 81, the first gear 82, the second gear 83, and the inner ring, an elderly person's leg rotates the foot pedal 33, thereby driving the first gear 82 and the second gear 83 to rotate through the connector, which in turn drives the movable disc 31 to rotate. Because the diameter of the first gear 82 is much larger than that of the second gear 83, the rotating force of the movable disc 31 is increased, making it difficult for the elderly person to easily rotate the movable disc 31 through the foot pedal 33, thereby improving the leg exercise effect of the device.

[0052] The connecting part includes a rotating shaft 91 and a plug-in ball 92. A placement groove 93 is provided at one end of the rotating shaft 91 that passes through the accommodating groove 81. The plug-in ball 92 is slidably installed in the placement groove 93, and a compression spring 94 is fixedly connected between the plug-in ball 92 and the placement groove 93. A plug-in groove 95 is provided on the side of the sliding column 61 facing the adjustment groove 32, and the plug-in groove 95 is cooperated with the plug-in ball 92. By setting the rotating shaft 91, the plug-in ball 92, the placement groove 93, the compression spring 94 and the plug-in groove 95, when the slide 61 slides to the rotating shaft 91, it can first resist the plug-in ball 92, causing it to enter the placement groove 93 and squeeze the compression spring 94. When the plug-in groove 95 is aligned with the plug-in ball 92, the plug-in ball 92 is pushed out of the placement groove 93 under the elastic action of the compression spring 94, and enters the plug-in groove 95 to complete the plug-in, thereby completing the installation of the slide 61 and the rotating shaft 91, making it convenient to drive the rotating shaft 91 to rotate through the foot pedal 33, thereby achieving subsequent leg exercises.

[0053] The fixing mechanism includes two elastic locking strips 10 and an unlocking assembly for unlocking the elastic locking strips 10. The elastic locking strips 10 are fixedly connected to the left end of the slide 2. A limit strip 11 is symmetrically provided at one end of the slide 101 near the elastic locking strip 10, and the end of the elastic locking strip 10 facing the limit strip 11 is a wedge-shaped block. The opposite ends of the two limit strips 11 are also wedge-shaped. When the elderly slide the slide 2 to the left of the slide 101, the elastic locking strip 10 can be located on the left side of the limit strip 11 and conflict with the limit strip 11. By providing the elastic locking strips 10, the limit strips 11 and the unlocking assembly, the sliding of the slide 2 can be locked and restricted, thereby preventing the slide 2 from sliding when the elderly rotate the foot pedal 33, thereby affecting the exercise efficiency.

[0054] The unlocking assembly includes a push block 12 and a return spring 13. The front and rear ends of the return spring 13 are fixedly connected to the push block 12 and the left inner wall of the slide 101 respectively. The push block 12 is slidably installed in the slide 101, and a groove 14 is formed at one end of the push block 12 facing the elastic locking strip 10. A magnet (not shown in the figure) is installed in the groove 14, and an iron block (not shown in the figure) is provided at the other end of the elastic locking strip 10 facing the groove 14. When the slide 2 is pushed to the left of the slide 101, the elastic locking strip 10 moves into the groove 14, and the iron block is attracted to the magnet, causing the push block 12 to move to the left inside the slide 101. Then, the push block 12 will move to the right inside the slide 101 under the elastic restoring force of the return spring 13, thereby driving the elastic locking strip 10 to break away from the interference with the limit strip 11, thereby releasing the locking restriction on the slide 2, which is convenient for the elderly to have another form of leg exercise.

[0055] The bottom end of the push block 12 is symmetrically provided with a guide block, and the bottom end of the slide groove is symmetrically provided with a guide groove, in which the guide block is slidably installed. When the push block 12 slides, it can drive the guide block to slide in the guide groove, thereby preventing the push block 12 from deviating from the initial sliding position.

[0056] The method of use of the present invention is as follows:

[0057] When in use, the elderly person first sits on the seat, then places his feet on the ends of the footrest 33, and then pushes the footrest 33 toward the right side of the support seat 1, thereby driving the slide 2 to slide in the slide groove 101 and squeezing the pressure spring 21. Then, through the elastic action of the pressure spring 21, the reaction is given to the slide 2, thereby exercising the elderly person's legs; at the same time, the dual-axis motor 52 can be started, so that the output shaft of the dual-axis motor 52 drives the two second bevel gears 53 to rotate, and then drives the two first bevel gears 51 and the adjusting rod 41 to rotate through transmission, thereby driving the two adjusting blocks 42 to move synchronously in the slide groove 101 and squeeze the pressure spring 21. The exercise intensity of the pressure spring 21 can be adjusted to adjust according to the recovery degree of the legs of different elderly people, thereby improving the practicality of the device.

[0058] When the elderly need to perform another form of exercise, the slide 2 slides toward the left side of the support seat 1, so that the elastic locking strip 10 slides to the left side of the limit strip 11 and conflicts with the limit strip 11, which can lock and limit the sliding of the slide 2, and then pull the foot pedal 33 toward the outside of the adjustment slot 32, so that the clamping plate 71 is disengaged from the clamping slot 73, and drives the tension spring 72 to achieve a stretching effect, and then the placement position of the foot pedal 33 can be adjusted. The positions of the two foot pedals 33 need to be adjusted to a symmetrical setting in the upper and lower parts. After the adjustment is completed, the foot pedal 33 is released, and then the clamping plate 71 is clamped with the other clamping slot 73 under the elastic action of the tension spring 72, which makes it easier to fix the position of the foot pedal 33, making it convenient for the elderly to perform another form of leg exercise.

[0059] At the same time, when the slide post 61 slides to the rotating shaft 91, it first contacts the plug-in ball 92, allowing the plug-in ball 92 to enter the placement groove 93 and squeeze the compression spring 94. When the plug-in groove 95 is aligned with the plug-in ball 92, the plug-in ball 92 is pushed out of the placement groove 93 under the elastic action of the compression spring 94 and enters the plug-in groove 95 to complete the plugging, thereby completing the installation of the slide post 61 and the rotating shaft 91, making it convenient to drive the rotating shaft 91 to rotate through the foot pedal 33, and then drive the first gear 82 to rotate, and drive the second gear 83 to rotate, and then drive the movable disk 31 to rotate through the transmission. Since the diameter of the first gear 82 is much larger than the diameter of the second gear 83, the rotation force of the movable disk 31 can be increased, and it is not easy for the elderly to easily drive the movable disk 31 to rotate through the foot pedal 33, thereby improving the exercise effect of the device on the legs of the elderly.

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A leg exercise device, characterized in that: include: A support seat (1) having a slide groove (101) therein; A slide seat (2) is slidably mounted in the slide groove (101), and a pressure spring (21) is provided between the slide seat (2) and the slide groove (101); A fixing ring (3) is arranged at one end of the slide seat (2) passing through the slide groove (101); A movable plate (31) is rotatably mounted in the fixed ring (3), and adjustment slots (32) are provided on both sides of the movable plate (31). A foot pedal (33) is provided on the side of the adjustment slot (32) away from the movable plate (31); A plurality of adjustment mechanisms are provided in the adjustment slot (32), and the movement of the adjustment mechanisms drives the foot pedal (33) to slide in the adjustment slot (32) to change the placement position of the foot pedal (33); and A fixing mechanism is provided at one end of the slide seat (2) away from the pressure spring (21), and the fixing mechanism is used for allowing an exerciser to selectively lock or release the slide seat (2); The adjustment mechanism includes a slide post (61), a slide rod (62) and a clamping assembly, wherein the slide post (61) is slidably mounted in the adjustment slot (32), and one end of the slide post (61) facing the foot pedal (33) is fixedly connected to the slide rod (62), and one end of the slide rod (62) away from the slide post (61) is connected to the foot pedal (33) via the clamping assembly; The clamping assembly includes a clamping plate (71) and a tension spring (72), the clamping plate (71) is slidably mounted on the outside of the slide rod (62), and the two ends of the tension spring (72) are fixedly connected to the clamping plate (71) and the slide column (61), respectively. One end of the clamping plate (71) away from the slide rod (62) is rotatably connected to the foot pedal (33), and a plurality of clamping grooves (73) connected to the adjustment groove (32) are provided on both sides of the movable disk (31), and the clamping grooves (73) are clamped to any of the clamping plates (71); A receiving groove (81) is provided in the movable plate (31), and a first gear (82) and a second gear (83) are rotatably mounted in the receiving groove (81), and an inner ring gear (84) is provided on the inner side wall of the receiving groove (81), and the inner ring gear (84) and the first gear (82) are both engaged with the second gear (83), and the first gear (82) is provided in cooperation with the sliding column (61) through a connecting member; A receiving groove (81) is provided in the movable plate (31), and a first gear (82) and a second gear (83) are rotatably mounted in the receiving groove (81), and an inner ring gear (84) is provided on the inner side wall of the receiving groove (81). The inner ring gear (84) and the first gear (82) are both engaged with the second gear (83), and the first gear (82) is provided in cooperation with the sliding column (61) through a connecting member.

2. A leg exercise device according to claim 1, characterized in that: An adjusting rod (41) is rotatably mounted in the slide groove (101), and the pressure spring (21) is sleeved on the outside of the adjusting rod (41). An end of the adjusting rod (41) away from the slide seat (2) is sleeved with an adjusting block (42) through a thread. Both ends of the pressure spring (21) are fixedly connected to the slide seat (2) and the adjusting block (42) respectively. An end of the adjusting rod (41) close to the adjusting block (42) passes through the slide groove (101) and emerges from the support seat (1).

3. A leg exercise device according to claim 2, characterized in that: The number of the pressure spring (21), the adjusting rod (41) and the adjusting block (42) is set to two.

4. The leg exercise device according to claim 2, characterized in that: One end of the adjusting rod (41) located outside the support seat (1) is fixedly connected to a first bevel gear (51); a dual-axis motor (52) is provided on a side of the support seat (1) close to the first bevel gear (51); both output shafts of the dual-axis motor (52) are fixedly connected to a second bevel gear (53); and the second bevel gear (53) is meshed with the first bevel gear (51).

5. The leg exercise device according to claim 1, characterized in that: The fixing mechanism includes two elastic locking strips (10) and an unlocking assembly for unlocking the elastic locking strips (10), the elastic locking strips (10) are fixedly connected to the end of the slide seat (2), and a limit strip (11) is symmetrically arranged at one end of the slide groove (101) close to the elastic locking strip (10), and the limit strip (11) is arranged in cooperation with the elastic locking strip (10).

6. The leg exercise device according to claim 5, characterized in that: The unlocking assembly includes a push block (12) and a return spring (13), the two ends of the return spring (13) are fixedly connected to the push block (12) and the inner wall of the slide groove (101), respectively, the push block (12) is slidably installed in the slide groove (101), and a groove (14) is provided at one end of the push block (12) facing the elastic locking strip (10).

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