Foot muscle strengthening assistance training device

Abstract

This application relates to the field of foot orthosis technology, and in particular to a foot muscle strengthening auxiliary training device, including a foot pedal base for placing a person's foot. A submetastatic plate is disposed on the foot pedal base, the position of which corresponds to the area from the first metatarsal bone to the big toe. An elastic component is disposed at the bottom of the submetastatic plate, the elastic component being located within the foot pedal base. A foot fixation component is also disposed on the foot pedal base. This application has the effect of optimizing the muscle training effect from the first metatarsal bone to the big toe.

Description

Technical Field

[0001] This application relates to the field of foot orthosis technology, and in particular to a foot muscle strengthening auxiliary training device. Background Technology

[0002] Foot muscles, especially the flexor muscles that control the shape of the arch and the movement of the first metatarsophalangeal joint, play a crucial role in maintaining normal foot biomechanical function, cushioning the impact of walking, providing propulsive force, and maintaining the stability of the lower limb kinetic chain. Insufficient strength or functional imbalance of the foot flexor muscles is often closely related to the occurrence and development of various foot diseases such as hallux valgus, plantar fasciitis, and collapsed arches, and also affects an individual's walking efficiency, balance, and athletic performance.

[0003] Currently, there are several technical solutions for rehabilitation training devices targeting foot muscles. For example, some existing training devices use a foot pressure sensing platform with display feedback to guide users in foot pressing exercises, while others use elastic pedals or airbag structures for users to repeatedly step on to exercise the foot muscles. However, most of these existing devices have the following shortcomings: most training devices only provide stepping training for the entire foot, lacking a targeted pressing structure for a specific area from the first metatarsal bone to the big toe. They cannot provide precise isolated training for key muscle groups that control the dynamic support of the arch of the foot, such as the flexor hallucis longus, flexor hallucis brevis, and abductor hallucis. Furthermore, there is a lack of a stable mechanical transmission path between the elastic resistance and the training area, affecting the repeatability and controllability of the training. Summary of the Invention

[0004] In order to optimize the muscle training effect from the first metatarsal bone to the big toe, this application provides a foot muscle strengthening auxiliary training device.

[0005] This application provides a foot muscle strengthening auxiliary training device, which adopts the following technical solution: A foot muscle strengthening auxiliary training device includes a foot pedal base for placing a person's foot. The foot pedal base is provided with a metatarsal indentation plate, the position of which corresponds to the position of the foot from the first metatarsal bone to the big toe. The bottom of the metatarsal indentation plate is provided with an elastic component, which is located inside the foot pedal base. The foot pedal base is also provided with a foot fixing component.

[0006] By adopting the above technical solution, and by setting up sub-metabolous plates corresponding to the first metatarsal bone to the big toe, the training load is precisely concentrated on the arch support muscles of the foot, namely the flexor hallucis longus, flexor hallucis brevis, and abductor hallucis. This achieves isolated strengthening training of this specific flexor muscle group. The foot fixation component stabilizes the rest of the user's foot, minimizing heel and ankle swaying and compensatory movements during training, ensuring that the force is actively generated by the target muscle group. The combination of the sub-metabolous plates and elastic components provides eccentric training resistance when the user actively presses down, and provides concentric training assistance through elastic return during relaxation, forming a complete eccentric-concentric contraction training cycle, strengthening foot muscle balance and lower limb movement stability.

[0007] Optionally, the foot pedal base has an internal cavity, and the top of the foot pedal base has a sliding hole that communicates with the cavity. The foot pedal base is provided with an adjustment frame and a shift lock assembly. The adjustment frame is slidably connected to the wall of the sliding hole. The metatarsal press plate is rotatably connected to the adjustment frame. The elastic assembly is connected to the metatarsal press plate and the adjustment frame respectively. The shift lock assembly is used to switch the adjustment frame between a sliding state and a fixed state.

[0008] By adopting the above technical solution, the sliding connection between the adjustment frame and the sliding hole allows the subtarsal plate to move horizontally along the length of the foot, adapting to users with different foot sizes. The force of the elastic component is precisely positioned below the head of the first metatarsal. The adjustment frame can be switched between the sliding state and the fixed state through the shifting and locking component, which ensures both the flexibility of position adjustment and the stable positioning of the subtarsal plate during training.

[0009] Optionally, the shifting and locking assembly includes a front shifting roller, a front pull belt, a rear shifting roller, and a rear pull belt. The front shifting roller and the rear shifting roller are rotatably connected to the wall of the sliding hole. The adjusting frame is located between the front pull belt and the rear pull belt. One end of the front pull belt is connected to the front shifting roller and the other end is connected to the adjusting frame. One end of the rear pull belt is connected to the rear shifting roller and the other end is connected to the adjusting frame.

[0010] By adopting the above technical solution, the front moving roller, the front pulling belt, the rear moving roller, and the rear pulling belt can form a bidirectional traction on the adjustment frame, applying force from both ends of the adjustment frame to achieve bidirectional precise displacement of the adjustment frame in the sliding hole. The operation is simple, and the adjustment frame can be pulled to slide by rotating the front moving roller or the rear moving roller to achieve fine adjustment of the position.

[0011] Optionally, a front locking frame is inserted into the end of the front moving roller, and a rear locking frame is inserted into the end of the rear moving roller. One end of the front locking frame passes through the front moving roller, and one end of the rear locking frame passes through the rear moving roller. The wall of the sliding hole is provided with locking grooves for the front locking frame and the rear locking frame to be inserted respectively.

[0012] By adopting the above technical solution, the structure in which the front locking frame and the rear locking frame are respectively inserted into the locking slots realizes the rotation locking and release of the front and rear moving rollers. When the position needs to be adjusted, the front and rear moving rollers can be rotated by pulling them out of the locking slots. After adjustment, they can be locked by inserting them into the locking slots. The operation is convenient and the locking state is stable, reducing the situation where the position adjustment frame is offset due to accidental rotation of the moving rollers caused by vibration or force during training.

[0013] Optionally, the elastic component includes a mounting frame, a top block, an elastic element, and a bottom block. The mounting frame is connected to the bottom of the adjustment frame, the top block is connected to the bottom of the metatarsal infrapedal plate, the bottom block is mounted on the mounting frame, and the two ends of the elastic element are connected to the top block and the bottom block.

[0014] By adopting the above technical solution, the connection between the mounting frame and the adjustment frame allows the elastic component to move synchronously with the adjustment frame, ensuring that the elastic element is always located below the metatarsal press plate. The top block is directly connected to the bottom of the metatarsal press plate, transmitting the downward pressure to the elastic element. The force transmission path is short, improving the response sensitivity during training.

[0015] Optionally, a guide rod is provided on the base block, the guide rod is slidably connected to the mounting bracket, and a threaded adjusting component is threadedly connected to the mounting bracket, the threaded adjusting component being rotatably connected to the base block.

[0016] By adopting the above technical solution, the guide rod guides the movement of the base block, ensuring stable movement of the elastic element during compression and reset, reducing lateral bending or skew of the elastic element. Through the rotational connection between the threaded adjustment component and the base block, the user can change the relative position of the base block and the mounting bracket by rotating the threaded adjustment component, thereby adjusting the pre-compression degree of the elastic element, realizing graded adjustment of training resistance, and meeting the progressive training needs of users with different resistance requirements.

[0017] Optionally, the bottom of the mounting bracket is provided with a pulley, which abuts against the hollow bottom wall of the foot pedal base.

[0018] By adopting the above technical solution, a pulley is set at the bottom of the mounting frame to abut against the bottom wall of the cavity. When the adjustment frame is in the sliding state, the mounting frame rolls on the bottom wall of the cavity through the pulley, which transforms sliding friction into rolling friction, reduces friction, and improves the smoothness and ease of sliding of the adjustment frame. At the same time, the pulley provides vertical support for the mounting frame, reduces the swaying caused by the mounting frame being suspended, and improves structural stability.

[0019] Optionally, the foot pedal base is provided with a rotatable instep support, the two ends of the instep support are close to the two sides of the foot pedal base, the middle part of the instep support is located above the foot pedal base, the middle part of the instep support is provided with an instep pad, and the instep support is provided with a rotating elastic element for forcing the middle part of the instep support close to the top side of the foot pedal base.

[0020] By adopting the above technical solution, setting up a foot instep frame and rotating elastic component, an independent training function can be provided for the dorsiflexor muscles of the foot. The user actively lifts the middle of the foot instep frame by raising the ball of the foot to overcome the resistance of the rotating elastic component, thereby strengthening the tibialis anterior muscle and toe extensor muscles. The foot instep pad improves training comfort. Plantar flexion training and dorsiflexion training share the same foot pedal base and foot fixation component, and the user can choose to use them according to their needs.

[0021] Optionally, a sliding block is slidably connected to the foot pedal base, and a threaded locking member is threadedly connected to the sliding block. The end of the threaded locking member passes through the sliding block and abuts against the foot pedal base. The instep frame is rotatably connected to the sliding block, and the two ends of the rotating elastic member are respectively connected to the instep frame and the sliding block.

[0022] By adopting the above technical solution, the sliding block and the foot pedal base are slidably connected, allowing the instep frame to move along the length of the foot, adapting to the needs of users with different foot sizes for the position of the instep frame. The sliding block is locked to the foot pedal base by a threaded locking component, ensuring that the position of the instep frame is stable during training. The two ends of the rotating elastic component are connected to the instep frame and the sliding block respectively, ensuring that the rotating elastic component can always provide stable torsional resistance when the instep frame rotates.

[0023] Optionally, the side wall of the instep frame is provided with a replacement groove, and both ends of the rotating elastic member are provided with plug-in blocks. The plug-in block at one end of the rotating elastic member is inserted into the replacement groove, and the plug-in block at the other end is plugged into the sliding block. Fixing pins are inserted into both the instep frame and the sliding block, and the fixing pins are plugged into the plug-in blocks.

[0024] By adopting the above technical solution, the rotational elastic component can be quickly disassembled and replaced through the cooperation of the replacement slot, plug-in block and fixing pin. The user can remove the rotational elastic component from the replacement slot after pulling out the fixing pin, replace it with a rotational elastic component of different elasticity specifications, and then fix it again through the plug-in block and fixing pin. The operation is simple and quick, so as to flexibly adjust the magnitude of the resistance of backflexion training and meet the diverse training needs of users at different training stages or with different resistance requirements.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up sub-metabolous plates corresponding to the first metatarsal bone to the big toe, the training load is precisely concentrated on the arch support muscles of the foot, namely the flexor hallucis longus, flexor hallucis brevis, and abductor hallucis. This achieves isolated strengthening training of this specific flexor muscle group. The foot fixation component stabilizes the rest of the user's foot, minimizing the swaying and compensatory movements of the heel and ankle during training, ensuring that the force is actively generated by the target muscle group. The combination of the sub-metabolous plates and elastic components provides eccentric training resistance when the user actively presses down, and provides concentric training assistance through elastic return when relaxing, forming a complete eccentric-concentric contraction training cycle, strengthening foot muscle balance and lower limb movement stability. 2. The sliding connection between the adjustment frame and the sliding hole allows the submetastatic plate to move horizontally along the length of the foot, adapting to users with different foot sizes. The force of the elastic component is precisely positioned below the head of the first metatarsal. The adjustment frame can be switched between the sliding state and the fixed state through the shifting and locking component, which ensures both the flexibility of position adjustment and the stable positioning of the submetastatic plate during training. 3. The instep support and rotating elastic element provide independent training for the dorsiflexor muscles of the foot. Users can actively lift the middle of the instep support by raising the ball of their foot to overcome the resistance of the rotating elastic element, thereby strengthening the tibialis anterior and toe extensor muscles. The instep pad enhances training comfort. Plantar flexion and dorsiflexion training share the same foot pedal base and foot fixation components, allowing users to choose which to use according to their needs. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure in the embodiments of this application. Figure 1 .

[0027] Figure 2 This is a schematic diagram of the overall structure in the embodiments of this application. Figure 2 .

[0028] Figure 3 This is a schematic diagram of the internal structure of the footrest base in an embodiment of this application.

[0029] Figure 4 This is a disassembly diagram of the adjustment frame, the shift lock assembly, and the foot pedal base in the embodiments of this application.

[0030] Figure 5 This is a schematic diagram of the footrest and sliding block in an embodiment of this application.

[0031] Figure 6 This is a schematic diagram illustrating the replacement principle of the rotating elastic element in the embodiments of this application.

[0032] Explanation of reference numerals in the attached figures: 1. Foot pedal base; 11. Heel recess; 12. Ankle backrest; 121. Foot strap; 122. Male and female buckle; 13. Sliding hole; 131. Locking groove; 14. Side cover; 2. Metatarsal press plate; 21. Limiting block; 3. Adjustment frame; 31. Slider; 32. Forward roller; 321. Front locking frame; 33. Front pull strap; 34. Rear roller; 341. Rear locking frame; 35. Rear pull strap; 41. Mounting frame; 42. Top block; 43. Elastic element; 44. Bottom block; 45. Guide rod; 46. Threaded adjustment element; 47. Pulley; 5. Instep frame; 51. Instep pad; 52. Rotating elastic element; 53. Sliding block; 531. Groove; 532. Fixed shaft; 54. Threaded locking element; 55. Replacement groove; 56. Insertion block; 57. Fixing pin. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0034] This application discloses a foot muscle strengthening auxiliary training device.

[0035] Reference Figure 1 and Figure 2 A foot muscle strengthening auxiliary training device includes a foot pedal base 1 for placing a person's foot. In this embodiment, the foot pedal base 1 is used to place the right foot. By making the structure of this application mirror-symmetric, the same device for placing the left foot can be obtained. Therefore, this embodiment only describes the principle of the single-leg training structure. The principle of the training structure of the other leg can be applied according to the description of this application. The top side of the foot pedal base 1 is the foot stepping area. The top of the foot pedal base 1 is movably provided with a metatarsal underplate 2. The position of the metatarsal underplate 2 corresponds to the position of the inner bottom of the foot from the first metatarsal bone to the big toe. Figure 1 and Figure 3 The bottom of the metatarsal infemoral plate 2 is provided with an elastic component. The metatarsal infemoral plate 2 is supported by the elastic component in its natural state. Therefore, the metatarsal infemoral plate 2 is in a horizontal state in its natural state. The elastic component is located inside the foot pedal base 1. The foot pedal base 1 is also provided with a foot fixing component.

[0036] When strengthening the muscles around the first metatarsal bone, the user places their foot on the top side of the footrest base 1, with the corresponding position of the big toe and the first metatarsal bone on the metatarsal indentation plate 2. The foot is then secured using the foot stabilization component. The user actively contracts the flexor muscles of the big toe and the first metatarsal area, causing the big toe and first metatarsal bone to press downwards onto the metatarsal indentation plate 2. The muscles are then relaxed to allow the big toe and first metatarsal bone to return to their original position. During this downward pressure, the metatarsal indentation plate 2 transmits the pressure to the elastic component, which stores the force. Yes, after the foot relaxes, the elastic component pushes the user's training area back up and resets it through the metatarsal plate 2. The user only needs to repeat the above actions several times to achieve a good training effect on the muscles at the first metatarsal position of the foot. It directly exercises the muscle group around the flexor hallucis longus, flexor hallucis brevis and abductor hallucis, improves the function of the arch of the foot, and the strengthened muscles can better support the foot. It can effectively stabilize the lower limbs when walking and running, and help improve problems such as hallux valgus or plantar fasciitis, thereby strengthening the balance, stability and force efficiency of the foot muscles.

[0037] Reference Figure 1 and Figure 2 The foot pedal base 1 is provided with a heel recess 11 and an ankle support plate 12. The heel recess 11 is embedded in the top side of the foot pedal base 1, and the ankle support plate 12 is located on the top of the foot pedal base 1, close to the rear end of the foot pedal base 1. The ankle support plate 12 is used to provide a tight fit and limit the user's ankle. The heel recess 11 and the ankle support plate 12 are close to each other. The foot fixation component includes a pair of foot straps 121 and male and female buckles 122 respectively located on both sides of the ankle support plate 12. When the user's foot steps on the foot pedal base 1, the heel can step on the heel recess 11. The foot straps 121 are wrapped around the lower leg above the ankle, and the male and female buckles 122 are used to lock together to complete the fixation, reduce ankle swaying, and improve training stability.

[0038] Reference Figure 3 and Figure 4 The footrest base 1 has an internal cavity, and a sliding hole 13 is provided on the top side of the footrest base 1, which is connected to the cavity. The footrest base 1 is provided with an adjustment frame 3 and a shift lock assembly. The adjustment frame 3 is located in the sliding hole 13. The two sides of the adjustment frame 3 are provided with sliders 31. The side wall of the adjustment frame 3 is slidably connected to the hole wall of the sliding hole 13 through the sliders 31. The adjustment frame 3 can slide in the horizontal direction. The submetastatic plate 2 is rotatably connected to the adjustment frame 3. The rotation axis of the submetastatic plate 2 extends in the horizontal direction and is perpendicular to the sliding direction of the adjustment frame 3. The submetastatic plate 2 can be rotated by pressing down on the end of the submetastatic plate 2 away from the ankle support plate 12. The elastic assembly is connected to the submetastatic plate 2 and the adjustment frame 3 respectively. The shift lock assembly is used to switch the adjustment frame 3 between the sliding state and the fixed state. In the sliding state, the adjustment frame 3 can slide closer to or away from the ankle support plate 12.

[0039] When users with different foot sizes are training, the adjustment frame 3 can be switched to the sliding state through the shift locking component. By sliding the adjustment frame 3, the adjustment frame 3 and the metatarsal press plate 2 can be moved to a position suitable for the user to exert force. Then the adjustment frame 3 can be switched to the fixed state to adapt to users with different foot shapes for training.

[0040] The shifting and locking assembly includes a front shifting roller 32, a front pull belt 33, a rear shifting roller 34, and a rear pull belt 35. The front shifting roller 32 and the rear shifting roller 34 are rotatably connected to the wall of the sliding hole 13 via a rotating shaft. The adjusting frame 3 is located between the front pull belt 33 and the rear pull belt 35. One end of the front pull belt 33 is connected to the front shifting roller 32, and the other end is connected to the end of the adjusting frame 3 away from the rear shifting roller 34. One end of the rear pull belt 35 is connected to the rear shifting roller 34, and the other end is connected to the end of the adjusting frame 3 away from the front shifting roller 32.

[0041] When the adjustment frame 3 switches to the sliding state, the front moving roller 32 and the rear moving roller 34 can be rotated respectively to make the front pull belt 33 and the rear pull belt 35 pull the adjustment frame 3 to slide back and forth, thereby adjusting the position of the adjustment frame 3 and moving the adjustment frame 3 and the metatarsal press plate 2 to a position suitable for the user to exert force.

[0042] The cavity and sliding hole 13 of the foot pedal base 1 both extend to the side wall of the foot pedal base 1. A side cover 14 is provided on the side wall of the foot pedal base 1. The side cover 14 is installed on the foot pedal base 1 by bolts. A sliding groove is opened on the inner side of the side cover 14. The slider 31 of the adjustment frame 3 slides and engages with the sliding groove. A front locking bracket 321 is inserted into the end of the front moving roller 32 away from the wall of the sliding hole 13. A rear locking bracket 341 is inserted into the end of the rear moving roller 34 away from the wall of the sliding hole 13. Both the front locking bracket 321 and the rear locking bracket 341 are composed of a knob head and a straight rod. The front locking frame 321 has a straight rod portion extending in the same direction as the front moving roller 32. The end of the straight rod portion of the front locking frame 321 away from the knob head portion passes through the front moving roller 32. The rear locking frame 341 has a straight rod portion extending in the same direction as the front moving roller 32. The end of the straight rod portion of the rear locking frame 341 away from the knob head portion passes through the rear moving roller 34. The sliding hole 13 has locking grooves 131 on its wall for the straight rod portions of the front locking frame 321 and the rear locking frame 341 to be inserted.

[0043] When the position of the adjustment frame 3 needs to be moved, manually operate the knob heads of the front locking frame 321 and the rear locking frame 341 to move the straight rods of the front locking frame 321 and the rear locking frame 341 away from the locking groove 131. Then, turn the knob heads of the front locking frame 321 and the rear locking frame 341 to make the straight rods of the front locking frame 321 and the rear locking frame 341 rotate, thereby moving the adjustment frame 3 to the ideal position through the front pull strap 33 and the rear pull strap 35. When the adjustment frame 3 has been adjusted to the appropriate position, press the knob heads of the front locking frame 321 and the rear locking frame 341 to make the straight rods of the front locking frame 321 and the rear locking frame 341 insert into the locking groove 131 of the sliding hole 13, thereby switching to the fixed state and completing the adjustment.

[0044] The elastic component includes a mounting frame 41, a top block 42, an elastic element 43, and a bottom block 44. The mounting frame 41 is L-shaped. The top of the vertical part of the mounting frame 41 is connected to the bottom of the adjustment frame 3. The top block 42 is connected to the bottom of the metatarsal press plate 2. The bottom block 44 is located at the top of the horizontal part of the mounting frame 41. The elastic element 43 is a spring. The two ends of the elastic element 43 are connected to the bottom of the top block 42 and the top of the bottom block 44, respectively.

[0045] When the adjustment frame 3 is moved, the elastic component moves with the adjustment frame 3, thereby maintaining elastic support for the metatarsal underplate 2. During training, the big toe and the corresponding part of the first metatarsal bone are placed on the metatarsal underplate 2, and the user's big toe and the first metatarsal bone position exert force to press down on the metatarsal underplate 2. Then relax the muscles of the big toe and the first metatarsal bone. Repeat this cycle several times. When pressing down, the elastic element 43 is compressed by force. After the foot relaxes, the elastic element 43 pushes the user's foot training part back up through its own elasticity, so that multiple muscle strengthening training can be performed.

[0046] The bottom of the base block 44 is connected to a vertically extending guide rod 45. The guide rod 45 is slidably connected to the horizontal part of the mounting frame 41 in the vertical direction. The bottom of the horizontal part of the mounting frame 41 is threadedly connected to a threaded adjusting member 46, which is a bolt. The screw part of the threaded adjusting member 46 passes through the horizontal part of the mounting frame 41. The end of the screw part of the threaded adjusting member 46 is rotatably connected to the bottom of the base block 44. Nuts are provided on both the upper and lower sides of the horizontal part of the mounting frame 41. The nuts are threadedly connected to the threaded adjusting member 46. The bottom of the metatarsal press plate 2 is provided with a limiting block 21. The limiting block 21 abuts against the bottom side of the adjusting frame 3 to prevent the metatarsal press plate 2 from tilting upward due to elastic force.

[0047] The distance between the bottom side of the base block 44 and the top side of the horizontal part of the mounting bracket 41 can be adjusted by rotating the threaded adjustment component 46, thereby changing the distance between the top block 42 and the base block 44, adjusting the degree of compression of the elastic component 43, and changing the force of the user's downward pressure during training, thereby achieving different levels of training effects. The nut is used to clamp the upper and lower sides of the horizontal part of the mounting bracket 41 and fix the threaded adjustment component 46.

[0048] The bottom of the horizontal part of the mounting bracket 41 is connected to a rotatable pulley 47, which abuts against the hollow bottom wall of the foot pedal base 1.

[0049] The pulley 47 can provide support for the mounting bracket 41 and the adjustment frame 3, reducing the situation where the mounting bracket 41 is suspended. When the adjustment frame 3 is in the sliding state, the pulley 47 slides on the bottom wall of the cavity of the foot pedal base 1, with small contact area and friction, improving the smoothness of sliding.

[0050] Reference Figure 2 and Figure 3 The top of the foot pedal base 1 is provided with a rotatable instep frame 5. The instep frame 5 is in the shape of a "U". The two ends of the instep frame 5 are close to the two sides of the foot pedal base 1. The two ends of the instep frame 5 are rotatably connected to the foot pedal base 1. The rotation axis of the instep frame 5 is parallel to the top surface of the foot pedal base 1. The middle part of the instep frame 5 is located above the foot pedal base 1. The middle part of the instep frame 5 is provided with an instep pad 51. The instep frame 5 is provided with a rotating elastic element 52 for forcing the middle part of the instep frame 5 to approach the top side of the foot pedal base 1. The rotating elastic element 52 is a torsion spring.

[0051] During foot training, the user can pass their toes through the footrest base 1 and the instep support 5, place their foot on the top surface of the footrest base 1, and press down on the muscles at the first metatarsal position using the metatarsal press plate 2. Then, the user can lift the middle of the instep support 5 by forcefully pointing the ball of the foot upwards. When lifting, the elastic element 52 is rotated to provide resistance, thereby effectively exercising the tibialis anterior muscle and the toe extensor muscles. This helps prevent and improve foot drop or ankle dorsiflexion weakness, and improves foot flexibility and strength.

[0052] Reference Figure 3 and Figure 5 The top of the footrest 1 is slidably connected to a sliding block 53. There are two sliding blocks 53, which are symmetrically arranged. The sliding blocks 53 can slide closer to or further away from the ankle support plate 12. The top of the sliding block 53 is threadedly connected to a threaded locking member 54, which is a bolt. The end of the threaded locking member 54 passes through the sliding block 53, and the end of the screw part of the threaded locking member 54 abuts against the top side of the footrest 1. The two ends of the instep frame 5 are rotatably connected to the side walls of the two sliding blocks 53 respectively. The two ends of the rotating elastic member 52 are connected to the instep frame 5 and the sliding blocks 53 respectively.

[0053] The position of the movable sliding block 53 is adjusted so that the middle part of the footrest 5 is moved to a suitable position. Then, the threaded locking member 54 is tightened so that the screw part of the threaded locking member 54 is pressed against and fixed to the top side of the footrest base 1, thereby adapting to the foot shape of different users.

[0054] Reference Figure 5 and Figure 6 The sliding block 53 has a groove 531 on its side wall, and a fixed shaft 532 is provided on the groove wall of the groove 531. The end of the footrest 5 is inserted into the groove 531. The groove wall of the groove 531 and the end side wall of the footrest 5 are rotatably engaged by the fixed shaft 532. The side wall of the footrest 5 has a replacement groove 55. The fixed shaft 532 is inserted into the replacement groove 55. The fixed shaft 532 of the groove 531 passes through the middle of the rotating elastic member 52. Both ends of the rotating elastic member 52 are provided with plug-in blocks 56. The end of the rotating elastic member 52 is inserted into the plug-in block 56. One end of the plug-in block 56 of the rotating elastic member 52 is inserted into the replacement groove 55, and the other end of the plug-in block 56 is inserted into the side wall of the sliding block 53. Fixed pins 57 are inserted into both the footrest 5 and the sliding block 53. The fixed pins 57 are inserted into the plug-in blocks 56.

[0055] First, remove the fixing pin 57 from the instep frame 5, the sliding block 53, and the plug-in block 56. Then, rotate the elastic element 52 and remove the plug-in blocks 56 at both ends of the elastic element 52 from the replacement slot 55 and the side wall of the sliding block 53. Remove the plug-in blocks 56 from the elastic element 52, replace it with a new elastic element 52 with a different elasticity, and reinstall it into the replacement slot 55 and the side wall of the sliding block 53. Then, insert the fixing pin 57 to fix it. This completes the replacement and fixing of the elastic element 52, thereby adjusting the resistance of the forefoot upward training and achieving different levels of training effects.

[0056] The implementation principle of the foot muscle strengthening auxiliary training device in this application embodiment is as follows: the heel and ankle are locked on the foot pedal base 1 by the foot fixing component. The user actively contracts the flexor muscle group of the big toe and the first metatarsal area, driving the big toe and the first metatarsal to press down on the metatarsal underplate 2. The compression elastic component stores energy. After relaxation, the elastic component pushes the training part back up and resets. This cycle realizes the eccentric and concentric contraction training of the arch support muscle group. The shift locking component can drive the adjustment frame 3 to slide horizontally, so that the metatarsal underplate 2 can be adapted to users with different arch lengths. The threaded adjustment component 46 can change the pre-compression degree of the elastic component 43 to adjust the downward pressure resistance. The instep frame 5 provides replaceable and adjustable dorsiflexion training resistance for the forefoot to be raised by rotating the elastic component 52, thereby strengthening the tibialis anterior muscle and the toe extensor muscle group. Through resistance training of plantar flexion and dorsiflexion, adjustable intensity strengthening training is conducted on the antagonistic muscle groups of the foot to enhance the dynamic support stiffness of the longitudinal arch of the foot and improve the force distribution of the transverse arch of the forefoot. This improves the balance of foot muscles and lower limb stability from a biomechanical perspective, increases the efficiency of push-off during walking and running, and helps to improve foot problems such as hallux valgus and plantar fasciitis. At the same time, it strengthens the dorsiflexion strength of the ankle joint to prevent and improve foot drop, thereby improving the overall flexibility, balance and athletic performance of the foot.

[0057] The above are all preferred embodiments of this application. These embodiments are only explanations of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A foot muscle strengthening auxiliary training device, characterized in that, Includes a foot pedal base (1) for placing a person's foot. The foot pedal base (1) is provided with a metatarsal underplate (2). The position of the metatarsal underplate (2) corresponds to the position of the foot from the first metatarsal bone to the big toe. The bottom of the metatarsal underplate (2) is provided with an elastic component. The elastic component is located inside the foot pedal base (1). The foot pedal base (1) is also provided with a foot fixing component.

2. The foot muscle strengthening auxiliary training device according to claim 1, characterized in that, The foot pedal base (1) has an internal cavity, and the top of the foot pedal base (1) has a sliding hole (13) connected to the cavity. The foot pedal base (1) is provided with an adjustment frame (3) and a shift lock assembly. The adjustment frame (3) is slidably connected to the hole wall of the sliding hole (13). The metatarsal press plate (2) is rotatably connected to the adjustment frame (3). The elastic assembly is connected to the metatarsal press plate (2) and the adjustment frame (3) respectively. The shift lock assembly is used to switch the adjustment frame (3) between the sliding state and the fixed state.

3. The foot muscle strengthening auxiliary training device according to claim 2, characterized in that, The shifting and locking assembly includes a front shifting roller (32), a front pull belt (33), a rear shifting roller (34), and a rear pull belt (35). The front shifting roller (32) and the rear shifting roller (34) are rotatably connected to the wall of the sliding hole (13). The adjusting frame (3) is located between the front pull belt (33) and the rear pull belt (35). One end of the front pull belt (33) is connected to the front shifting roller (32), and the other end is connected to the adjusting frame (3). One end of the rear pull belt (35) is connected to the rear shifting roller (34), and the other end is connected to the adjusting frame (3).

4. The foot muscle strengthening auxiliary training device according to claim 3, characterized in that, The front moving roller (32) is connected to a front locking frame (321) at its end, and the rear moving roller (34) is connected to a rear locking frame (341) at its end. One end of the front locking frame (321) passes through the front moving roller (32), and one end of the rear locking frame (341) passes through the rear moving roller (34). The sliding hole (13) has locking grooves (131) on its wall for the front locking frame (321) and the rear locking frame (341) to be inserted.

5. The foot muscle strengthening auxiliary training device according to claim 2, characterized in that, The elastic component includes a mounting bracket (41), a top block (42), an elastic element (43), and a bottom block (44). The mounting bracket (41) is connected to the bottom of the adjustment frame (3), the top block (42) is connected to the bottom of the metatarsal press plate (2), the bottom block (44) is mounted on the mounting bracket (41), and the two ends of the elastic element (43) are connected to the top block (42) and the bottom block (44).

6. The foot muscle strengthening auxiliary training device according to claim 5, characterized in that, A guide rod (45) is provided on the bottom block (44). The guide rod (45) is slidably connected to the mounting bracket (41). A threaded adjusting member (46) is threadedly connected to the mounting bracket (41). The threaded adjusting member (46) is rotatably connected to the bottom block (44).

7. The foot muscle strengthening auxiliary training device according to claim 5, characterized in that, The bottom of the mounting bracket (41) is provided with a pulley (47), which abuts against the cavity bottom wall of the foot pedal base (1).

8. The foot muscle strengthening auxiliary training device according to claim 1, characterized in that, The foot pedal base (1) is provided with a rotatable instep bracket (5). The two ends of the instep bracket (5) are close to the two sides of the foot pedal base (1). The middle part of the instep bracket (5) is located above the foot pedal base (1). The middle part of the instep bracket (5) is provided with an instep pad (51). The instep bracket (5) is provided with a rotating elastic element (52) for forcing the middle part of the instep bracket (5) to approach the top side of the foot pedal base (1).

9. The foot muscle strengthening auxiliary training device according to claim 8, characterized in that, A sliding block (53) is slidably connected to the foot pedal base (1), and a threaded locking member (54) is threadedly connected to the sliding block (53). The end of the threaded locking member (54) passes through the sliding block (53) and abuts against the foot pedal base (1). The instep frame (5) is rotatably connected to the sliding block (53), and the two ends of the rotating elastic member (52) are respectively connected to the instep frame (5) and the sliding block (53).

10. The foot muscle strengthening auxiliary training device according to claim 9, characterized in that, The side wall of the footrest (5) is provided with a replacement groove (55). Both ends of the rotating elastic member (52) are provided with plug-in blocks (56). One end of the rotating elastic member (52) is inserted into the replacement groove (55), and the other end of the plug-in block (56) is inserted into the sliding block (53). The footrest (5) and the sliding block (53) are both provided with fixing pins (57), and the fixing pins (57) are inserted into the plug-in blocks (56).

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