Adjustable foot and shank stretcher

Abstract

The invention discloses an adjustable foot and shank stretcher, and belongs to the technical field of fitness equipment. Comprising a rotating assembly, a damper is rotationally installed on a supporting plate, a fixing plate is rotationally connected with the supporting plate, a first elastic piece is installed on the damper, and a gear is installed on an adjusting rod of the damper; the adjusting assembly comprises a transmission shaft rotationally installed on the supporting plate and two sets of fixing blocks, a supporting rod is fixedly installed on the transmission shaft, two sets of limiting rods are connected to the supporting rod in a sliding mode, the limiting rods slide on the fixing blocks, a pedal is fixedly installed on the transmission shaft, a third elastic piece is installed on the supporting plate, and rod assemblies are installed on the limiting rods. A user can set different stretching angles according to the flexibility difference of the left leg and the right leg, the unilateral injury rehabilitation requirement or the unbalanced posture of the body, a target muscle group can be exercised in an isolated mode, the problem that force exertion on the two sides is not uniform can be solved, the limitation of traditional symmetrical stretching equipment is broken through, and the rehabilitation and training accuracy is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fitness equipment, more particularly to an adjustable foot and calf stretcher. BACKGROUND

[0002] Stretching training of the foot and calf is an important part of rehabilitation medicine and sports fitness, which can effectively improve the blood circulation of the lower limbs, enhance the flexibility of the joints, and relieve muscle tension, and is particularly suitable for sports injury rehabilitation, correction of lower limb muscle imbalance, and daily muscle relaxation. With the improvement of people's health consciousness, various foot and calf stretching devices have emerged, such as stretchers.

[0003] Most of the existing stretchers are static stretchers or stretchers with slight vibration, which cannot be targeted according to the differences in flexibility of the left and right legs and feet of the user, and have insufficient flexibility. Some devices integrate dampers to provide stretching resistance, but the damping adjustment mostly relies on manual knobs, which requires the user to bend over to operate, which is not friendly to special groups with limited waist mobility. Moreover, the bilateral damping adjustment is mostly linked control, which cannot be independently set according to the differentiated needs of the two feet, and the personalized training capability is insufficient, further limiting the application range of the device. In view of this, we propose an adjustable foot and calf stretcher. SUMMARY

[0004] The purpose of the present application is to provide an adjustable foot and calf stretcher to solve at least one of the above technical problems.

[0005] The present application provides an adjustable foot and calf stretcher, which comprises a rotating assembly mounted on a folding frame, a damper mounted on a support plate of the rotating assembly, a fixed plate mounted on the output end of the damper and rotatably connected with the support plate, a first elastic member mounted on the damper, and a gear mounted on the adjusting rod of the damper.

[0006] The adjusting assembly comprises a transmission shaft rotatably mounted on the support plate, and two groups of fixed blocks fixedly mounted on the support plate, a support rod fixedly mounted on the transmission shaft, two groups of limiting rods slidably connected to the support rod, the limiting rods sliding on the fixed blocks, a pedal fixedly mounted on the transmission shaft, a third elastic member mounted on the support plate for pushing the pedal, and a rod assembly mounted on the limiting rod.

[0007] The pedal rotates to control the swing of the support rod, the limiting rods drive the two groups of rod assemblies to move in opposite directions, the descending rod assembly drives the gear to rotate, and the adjusting rod rotates to adjust the damping size of the damper.

[0008] As a further description of the above technical solution, the rotation axis of the adjusting rod is collinear with the rotation axis of the damper.

[0009] As a further description of the above technical scheme, two fixed blocks are located on both sides of the transmission shaft, and two top rods are located on both sides of the gear.

[0010] As a further description of the above technical scheme, the rod assembly comprises a connecting rod rotationally connected with the limiting rod, a push rod slidingly connected with the connecting rod, a fourth elastic member mounted on the push rod, a top rod rotationally connected with the connecting rod, and a torsion spring mounted at the rotationally connected position of the top rod, and the connecting rod is connected with the fixed block through a tension spring.

[0011] As a further description of the above technical scheme, the fixed block is provided with a guide groove, an adjusting groove and an arc-shaped groove which are in communication with each other, the first end groove depth of the adjusting groove is greater than the second end groove depth of the arc-shaped groove, and the second end groove depth of the adjusting groove is not less than the first end groove depth of the arc-shaped groove.

[0012] The limiting rod slides in the guide groove, and the push rod slides in the guide groove, the adjusting groove and the arc-shaped groove.

[0013] As a further description of the above technical scheme, the rotating assembly comprises an electric cylinder rotationally connected with the folding frame, a support shaft rotationally mounted at the output end of the electric cylinder, two groups of support plates mounted on the support shaft, an adjusting block slidingly mounted on one support plate, the support plate without the adjusting block being rotationally connected with the folding frame, and the support plate with the adjusting block being rotationally connected with the folding frame through a lifting rod.

[0014] As a further description of the above technical scheme, the support plate is provided with a fixed column, and a plurality of limiting grooves are formed in the fixed column.

[0015] A plurality of limiting balls are elastically arranged on the gear, the fixed column is coaxial with the gear, the limiting balls are clamped into the limiting grooves, and the limiting balls are used for limiting the gear.

[0016] As a further description of the above technical scheme, the lifting rod comprises a support pipe mounted on the folding frame, a knob rotationally connected with the support pipe, a threaded rod threadedly matched with the knob, and the threaded rod is rotationally connected with the adjusting block.

[0017] As a further description of the above technical scheme, a toe pressing plate is magnetically mounted on the fixed plate, and a baffle is mounted at one end of the fixed plate.

[0018] As a further description of the above technical scheme, the folding frame comprises a fixed seat, a telescopic rod mounted on the fixed seat, the telescopic rod is connected through a hinge, an extension end of the telescopic rod is provided with a hand-held frame, and an operation screen is clamped on the hand-held frame.

[0019] As described above, due to the adoption of the above technical scheme, the beneficial effects of the present application are:

[0020] 1. The present application is designed by the combination of damper and first elastic element, which provides controllable resistance through damper and smooth reset after compression through first elastic element; when the user actively presses the fixed plate, the damper resistance can exercise muscle control force; in the reset stage, the elastic element and the damper cooperate to avoid joint impact caused by rapid rebound, realize smooth reset of the fixed plate, and reduce the risk of sports injury.

[0021] 2. The present application drives two groups of support plates by electric cylinder to adjust the overall angle, cooperates with lifting rod to realize independent inclination adjustment of single group of support plates, switches through overall adjustment and independent adjustment, and sets different stretching angles according to the flexibility difference between left and right legs, unilateral injury rehabilitation needs or body imbalance posture, so as to isolate the target muscle group and correct the uneven force problem on both sides, break through the limitation of traditional symmetrical stretching equipment, and improve the accuracy of rehabilitation and training.

[0022] 3. The present application can control the rotation of the top rod pushing gear through the foot tip stepping pedal, and then adjust the damping size, without the need for manual operation, effectively reducing the difficulty of damping adjustment, improving the flexibility of adjustment, which is especially suitable for rehabilitation or the elderly with inconvenient waist movement, and the two groups of dampers can independently adjust the resistance to meet the differentiated training needs of both feet.

[0023] 4. The folding frame is designed to be folded through telescopic rod hinge, height adjustment of hand support frame and rotation of operation screen, realizes space minimization storage in non-use state, and solves the problem of limited space in family or rehabilitation institution. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The overall structure schematic diagram of the adjustable foot and calf stretcher disclosed by a preferred embodiment of the present application is disclosed.

[0025] Figure 2 The folding schematic diagram of the adjustable foot and calf stretcher disclosed by a preferred embodiment of the present application is disclosed.

[0026] Figure 3 The electric cylinder connection structure schematic diagram of the adjustable foot and calf stretcher disclosed by a preferred embodiment of the present application is disclosed.

[0027] Figure 4 The fixed column structure schematic diagram of the adjustable foot and calf stretcher disclosed by a preferred embodiment of the present application is disclosed.

[0028] Figure 5 The lifting rod connection structure schematic diagram of the adjustable foot and calf stretcher disclosed by a preferred embodiment of the present application is disclosed.

[0029] Figure 6 The pedal connection structure schematic diagram of the adjustable foot and calf stretcher disclosed by a preferred embodiment of the present application is disclosed.

[0030] Figure 7 Partial sectional view of adjustable foot and calf stretcher according to a preferred embodiment of the present application;

[0031] Figure 8 Schematic diagram of gear structure of adjustable foot and calf stretcher according to a preferred embodiment of the present application;

[0032] Figure 9 Schematic diagram of rod assembly distribution of adjustable foot and calf stretcher according to a preferred embodiment of the present application;

[0033] Figure 10 Schematic diagram of fixed block structure of adjustable foot and calf stretcher according to a preferred embodiment of the present application;

[0034] Figure 11 Schematic diagram of rod assembly structure of adjustable foot and calf stretcher according to a preferred embodiment of the present application;

[0035] Figure 12 Schematic diagram of top rod structure of adjustable foot and calf stretcher according to a preferred embodiment of the present application.

[0036] Figure legend: 1, folding frame; 11, fixed seat; 12, telescopic rod; 13, hand support frame; 14, operation screen; 2, rotating assembly; 21, electric cylinder; 22, support shaft; 23, support plate; 24, fixed column; 25, limiting groove; 26, adjusting block; 3, lifting rod; 31, support pipe; 32, knob; 33, threaded rod; 4, damper; 41, adjusting rod; 5, fixed plate; 51, toe pressing plate; 52, baffle; 6, first elastic member; 7, gear; 71, groove; 72, second elastic member; 73, limiting ball; 8, adjusting assembly; 81, transmission shaft; 82, fixed block; 83, support rod; 84, limiting rod; 85, guide groove; 86, adjusting groove; 87, arc-shaped groove; 88, pedal; 89, third elastic member; 9, rod assembly; 91, connecting rod; 92, push rod; 93, fourth elastic member; 94, top rod; 95, torsional spring; 96, positioning rod; 10, tension spring. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the protection scope of the present application.

[0038] REFERENCE Figures 1 to 12This embodiment discloses an adjustable foot and calf stretcher, including a folding frame 1. The folding frame 1 includes a fixed base 11, on which a telescopic rod 12 is mounted. The two are connected by a 90-degree hinge, allowing the telescopic rod 12 to be folded onto the fixed base 11. When not in use, the stretcher can be folded onto the fixed base 11, reducing space occupation. A handrail 13 is fixedly mounted on the extended end of the telescopic rod 12. After the telescopic rod 12 is extended or retracted, the extended end can be fixed by a locking device, thereby realizing the height adjustment of the handrail 13 to accommodate people of different heights and improve the flexibility of the stretcher. An operation screen 14 is snapped onto the handrail 13. The operation screen 14 can rotate around the handrail 13. When in use, the operation screen 14 can be rotated and unfolded; when not in use, the operation screen 14 can be folded up, reducing space occupation and the risk of damage. A rotating component 2 is mounted on the folding frame 1.

[0039] Reference Figure 2 and Figure 3 The rotating assembly 2 includes an electric cylinder 21 rotatably connected to the fixed base 11. A support shaft 22 is rotatably mounted on the output end of the electric cylinder 21. Two sets of support plates 23 are rotatably mounted on the support shaft 22. A fixed column 24 is fixedly mounted on the support plate 23. A plurality of limiting grooves 25 arranged in a circular array around its axis are opened on the fixed column 24. An adjusting block 26 is slidably mounted on one of the support plates 23. The support plate 23 without the adjusting block 26 is rotatably connected to the fixed base 11. The support plate 23 with the adjusting block 26 is rotatably connected to the fixed base 11 through the lifting rod 3.

[0040] The lifting rod 3 includes a support tube 31 fixedly mounted on a fixed base 11. A knob 32 is rotatably connected to the support tube 31, and a threaded rod 33 is threaded onto the knob 32. A guide rod (not shown in the figure) is fixedly mounted on the fixed base 11. The guide rod is inserted into the support tube 31 and slidably connected to the threaded rod 33, used to limit the rotation of the threaded rod 33 and guide its axial lifting. The threaded rod 33 is rotatably connected to the adjusting block 26. After the electric cylinder 21 drives the adjustment of the angle of the two sets of support plates 23, by rotating the knob 32, the threaded rod 33 can drive the corresponding support plate 23 to rotate around the support shaft 22, thereby achieving different angles of tilt for the two sets of support plates 23. Users can set different stretching angles according to the different flexibility of the left and right legs or feet, which can realize unilateral injury rehabilitation or correct body imbalance posture, and can better isolate or exercise target muscle groups.

[0041] Reference Figure 1 , Figure 2 , Figures 6 to 8A damper 4 is rotatably mounted on the support plate 23. The output end of the damper 4 is rotatably connected to the fixed plate 5. A first elastic element 6 is mounted on the damper 4. One end of the first elastic element 6 is fixed to the housing of the damper 4, and the other end is fixed to the output end of the damper 4. It is used to assist the damper 4 in resetting after compression. The end of the fixed plate 5 away from the damper 4 is rotatably connected to the support plate 23. A toe pressure plate 51 is magnetically mounted on the fixed plate 5 for acupressure massage of the user's soles to promote blood circulation. A baffle 52 is fixedly mounted on the rotating end of the fixed plate 5. When the fixed plate 5 is tilted, the foot is placed on the toe pressure plate 51. The baffle 52 can support the heel and reduce the difficulty of standing for the user.

[0042] The axis of the adjusting rod 41 of the damper 4 is collinear with the rotation axis of the damper 4. A gear 7 is fixedly mounted on the adjusting rod 41 of the damper 4. A groove 71 is formed on the gear 7, and a second elastic element 72 is installed in the groove 71. One end of the second elastic element 72 is fixedly connected to the gear 7, and the other end is fixedly connected to a limiting ball 73. The outer diameter of the limiting ball 73 is not greater than the diameter of the groove 71. The fixing post 24 is coaxial with the gear 7. The fixing post 24 and the gear 7 can be rotatably connected or fitted together. Under the action of the second elastic element 72, the limiting ball 73 is engaged in the limiting groove 25, increasing the rotational resistance of the gear 7 and further enhancing the stability of the adjusting rod 41. It should be noted that the adjusting rod 41 is the damping adjustment input end of the damper 4. The output resistance of the damper 4 can be changed by rotating the adjusting rod 41. The damper 4 and its adjusting rod 41 are existing devices, and their structure and principle will not be described in detail here.

[0043] Reference Figures 6 to 10To further reduce the difficulty of adjusting the damping magnitude of the damper 4 during use, an adjustment assembly 8 is installed on the support plate 23. The adjustment assembly 8 includes a drive shaft 81 rotatably mounted on the support plate 23 and two sets of fixing blocks 82 fixedly mounted on the support plate 23. The fixing blocks 82 are distributed on both sides of the drive shaft 81. A support rod 83 is fixedly mounted on the drive shaft 81. Two sets of limiting rods 84 are slidably connected to the support rod 83. The limiting rods 84 are perpendicular to the support rod 83. The fixing blocks 82 are provided with a guide groove 85, an adjustment groove 86, and an arc-shaped groove 87. The first end of the adjustment groove 86, the last end of the arc-shaped groove 87, and the last end of the guide groove 85 are interconnected. The depth of the first end of the adjusting groove 86 is greater than the depth of the last end of the arc-shaped groove 87. The last end of the adjusting groove 86 is connected to the first end of the arc-shaped groove 87, and the depth of the last end of the adjusting groove 86 is not less than the depth of the first end of the arc-shaped groove 87. The limiting rod 84 slides in the guide groove 85. The pedal 88 is fixedly installed on the transmission shaft 81. The pedal 88 is located on one side of the support plate 23 and is arranged parallel to the support rod 83. The adjusting assembly 8 also includes two sets of third elastic elements 89 located at both ends of the pedal 88. One end of the third elastic element 89 is fixedly connected to the pedal 88, and the other end is fixedly connected to the support plate 23. The third elastic element 89 is used to push the pedal 88 to keep the support plate 23 parallel.

[0044] Reference Figure 9 , Figure 11 and Figure 12 A rod assembly 9 is installed on the limiting rod 84. The rod assembly 9 includes a connecting rod 91 rotatably connected to the limiting rod 84. A lever 92 is slidably connected to the connecting rod 91. A fourth elastic element 93 is installed on the connecting rod 91 to push the lever 92 to move toward the fixed block 82. The lever 92 slides in the guide groove 85, the adjusting groove 86, and the arc groove 87. A push rod 94 is rotatably connected to the end of the connecting rod 91. Two push rods 94 are located on both sides of the gear 7. A torsion spring 95 is installed at the rotatable connection of the push rod 94. One end of the torsion spring 95 is fixedly connected to the push rod 94, and the other end is fixedly connected to the connecting rod 91. A positioning rod 96 is fixedly installed on the connecting rod 91. The torsion spring 95 is used to drive the push rod 94 to rotate toward the positioning rod 96. The connecting rod 91 is connected to the fixed block 82 through a tension spring 10. The elastic force of the third elastic element 89 is greater than the elastic force of the tension spring 10. By controlling the different rotation directions of the drive shaft 81, the push rod 94 pushes the gear 7 and the adjusting rod 41 to rotate, thereby adjusting the resistance of the damper 4 according to the user's needs. The user can control the pedal 88 with their feet to drive the rotation of the drive shaft 81, avoiding frequent bending over to manually adjust the damping, reducing the difficulty of damping adjustment, and is especially suitable for rehabilitation patients who have difficulty bending over. Moreover, the damping of the two fixed plates 5 corresponding to the damper 4 can be adjusted independently, enabling different damping stretching training for both feet, greatly improving the flexibility of training.

[0045] Working principle: The telescopic rod 12 is extended to a vertical position. The length of the telescopic rod 12 is adjusted according to the height and locked by the locking device. The direction of the operating screen 14 is adjusted. The output end of the electric cylinder 21 extends and drives the two sets of support plates 23 to rotate through the support shaft 22. The support plates 23 drive the fixed plates 5 to rotate synchronously through the damper 4, so that the fixed plates 5 maintain a suitable angle with the horizontal plane. The user holds the handrail 13 with both hands and places his feet on the toe pressure plates 51 of the two fixed plates 5 respectively, keeping them in contact with the toe pressure plates 51, thereby achieving training or stretching of the ankles, lower limb joints, leg ligaments and leg muscles.

[0046] Users can exert force with the ball of their foot and press down on the fixed plate 5. The fixed plate 5 compresses the output end of the damper 4, causing it to contract and compress the first elastic element 6. After the ball of the foot stops exerting force, the output end of the damper 4 gradually returns to its original position under the action of the first elastic element 6, causing the fixed plate 5 to return to the tilted state before pressing down. By repeating the above operation, active training of the feet and legs can be achieved, improving the training effect.

[0047] When it is necessary to adjust the damping magnitude of damper 4, the toe is pressed on one end of pedal 88, causing pedal 88 to rotate around the axis of transmission shaft 81 and compress the third elastic element 89. When pedal 88 rotates, transmission shaft 81 and support rod 83 rotate accordingly. When support rod 83 rotates, one limit rod 84 drives rod assembly 9 to move upward. The rising rod assembly 9 does not contact gear 7. The other limit rod 84 drives connecting rod 91 to move downward, causing limit rod 84 to slide downward in guide groove 85. The lever 92 slides downward in adjustment groove 86. Tension spring 10 is gradually stretched as connecting rod 91 moves. Top rod 94 contacts gear 7 and pushes gear 7 to rotate. Gear 7 drives adjustment rod 41 to rotate, thereby realizing the adjustment of damping magnitude of damper 4. As gear 7 rotates, the limiting ball 73 is subjected to compressive force and moves into the groove 71, compressing the second elastic element 72. As gear 7 continues to rotate, the limiting ball 73 moves from one limiting groove 25 to the next, thereby maintaining the stability of gear 7 and adjusting rod 41 after rotation and reducing the risk of adjusting rod 41 resetting. It should be noted that each time the push rod 94 drives gear 7 to rotate, the limiting ball 73 switches at least one limiting groove 25.

[0048] As the lever 92 moves to the end of the adjusting groove 86, under the tension of the tension spring 10, the connecting rod 91 rotates around the limiting rod 84, causing the lever 92 to move from the adjusting groove 86 to the arc-shaped groove 87. The push rod 94 disengages from the gear 7. When the foot disengages from the pedal 88, under the action of the third elastic element 89, the pedal 88, support rod 83, and limiting rod 84 reset. The lever 92 slides in the arc-shaped groove 87 and returns to the adjusting groove 86, then enters the guide groove 85, completing one adjustment of the damping magnitude. When reverse damping adjustment is needed, the other end of the pedal 88 is rotated by pressing the foot to achieve reverse damping adjustment. It should be noted that initially, both the lever 92 and the limiting rod 84 are in the guide groove 85.

[0049] When the user's feet are stretched at different angles, the threaded rod 33 is raised by manually rotating the knob 32. The threaded rod 33 drives the corresponding support plate 23 to rotate around the support shaft 22, achieving different angles of tilt for the two sets of support plates 23. The user's two feet step on different toe pressure plates 51, achieving different angle training for the feet and legs. It should be noted that when the user is statically stretching, the damping of the damper 4 can be adjusted to the maximum to ensure the stability of the foot support provided by the fixed plate 5.

[0050] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An adjustable foot and calf stretcher, characterized in that: It includes a rotating assembly (2) mounted on a folding frame (1), a damper (4) rotatably mounted on a support plate (23) of the rotating assembly (2), a fixed plate (5) rotatably mounted on the output end of the damper (4) and rotatably connected to the support plate (23), a first elastic element (6) mounted on the damper (4), and a gear (7) mounted on the adjusting rod (41) of the damper (4). The adjustment assembly (8) includes a drive shaft (81) rotatably mounted on a support plate (23) and two sets of fixing blocks (82) fixedly mounted on the support plate (23). A support rod (83) is fixedly mounted on the drive shaft (81). Two sets of limiting rods (84) are slidably connected on the support rod (83). The limiting rods (84) slide on the fixing blocks (82). A pedal (88) is fixedly mounted on the drive shaft (81). A third elastic element (89) for pushing the pedal (88) is mounted on the support plate (23). A rod assembly (9) is mounted on the limiting rod (84). The pedal (88) rotates to control the support rod (83) to swing, and the limit rod (84) drives the two sets of rod assemblies (9) to move in opposite directions. The descending rod assembly (9) pushes the gear (7) to rotate, so that the adjusting rod (41) rotates to adjust the damping magnitude of the damper (4).

2. The adjustable foot and calf stretcher according to claim 1, characterized in that: The axis of rotation of the adjusting rod (41) is collinear with the axis of rotation of the damper (4).

3. The adjustable foot and calf stretcher according to claim 1, characterized in that: Two fixed blocks (82) are located on both sides of the drive shaft (81), and two push rods (94) are located on both sides of the gear (7).

4. The adjustable foot and calf stretcher according to claim 1, characterized in that: The rod assembly (9) includes a connecting rod (91) rotatably connected to a limiting rod (84), a lever (92) slidably connected to the connecting rod (91), a fourth elastic element (93) installed on the lever (92), a push rod (94) rotatably connected to the connecting rod (91), a torsion spring (95) installed at the rotatable connection of the push rod (94), and the connecting rod (91) connected to the fixing block (82) through a tension spring (10).

5. The adjustable foot and calf stretcher according to claim 4, characterized in that: The fixed block (82) is provided with a guide groove (85), an adjustment groove (86) and an arc groove (87) that are interconnected. The depth of the first end of the adjustment groove (86) is greater than the depth of the last end of the arc groove (87), and the depth of the last end of the adjustment groove (86) is not less than the depth of the first end of the arc groove (87). The limiting rod (84) slides in the guide groove (85), and the lever (92) slides in the guide groove (85), the adjustment groove (86) and the arc groove (87).

6. The adjustable foot and calf stretcher according to claim 1, characterized in that: The rotating assembly (2) includes an electric cylinder (21) rotatably connected to the folding frame (1). The output end of the electric cylinder (21) is rotatably mounted with a support shaft (22). Two sets of support plates (23) are mounted on the support shaft (22). An adjusting block (26) is slidably mounted on one support plate (23). The support plate (23) without the adjusting block (26) is rotatably connected to the folding frame (1). The support plate (23) with the adjusting block (26) is rotatably connected to the folding frame (1) through a lifting rod (3).

7. The adjustable foot and calf stretcher according to claim 1, characterized in that: A fixing column (24) is installed on the support plate (23), and a plurality of limiting grooves (25) are provided on the fixing column (24); The gear (7) is elastically provided with several limiting balls (73), the fixing column (24) is coaxial with the gear (7), and the limiting balls (73) are inserted into the limiting groove (25) to limit the gear (7).

8. The adjustable foot and calf stretcher according to claim 6, characterized in that: The lifting rod (3) includes a support tube (31) installed on the folding frame (1), a knob (32) is rotatably connected to the support tube (31), a threaded rod (33) is threadedly fitted to the knob (32), and the threaded rod (33) is rotatably connected to the adjusting block (26).

9. The adjustable foot and calf stretcher according to any one of claims 1-8, characterized in that: A toe pressure plate (51) is magnetically attached to the fixing plate (5), and a baffle (52) is installed at one end of the fixing plate (5).

10. The adjustable foot and calf stretcher according to any one of claims 1-8, characterized in that: The folding frame (1) includes a fixed base (11), a telescopic rod (12) is installed on the fixed base (11), the telescopic rod (12) is connected by a hinge, a handrail (13) is installed on the extended end of the telescopic rod (12), and an operation screen (14) is snapped onto the handrail (13).

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