Leg muscle rehabilitation training device

Abstract

The invention relates to the technical field of rehabilitation training devices, in particular to a leg muscle rehabilitation training device which comprises a bottom plate, a supporting plate, a seat plate and a leg supporting plate. The first end of the leg supporting plate is provided with a foot placing groove, and the lower side of the leg supporting plate is connected with a supporting frame. An opening and closing assembly is arranged between the second end and the seat plate and used for driving the leg supporting plates to be opened and closed alternately. The supporting plate is connected with the fixing frame, the top of the supporting plate is provided with a flexion-extension assembly, one side of the bottom away from the rollers is provided with a resistance-increasing assembly, one side of the resistance-increasing assembly is provided with a resistance assembly, and an adjustable resistance source is provided. The trainer integrates alternate opening and closing and flexion and extension functions, solves the problem that a traditional instrument is single in training mode, comprehensively exercises leg muscle groups, and promotes balanced development of lower limb muscle strength. And an adjustable resistance mechanism can flexibly adjust the training intensity according to the rehabilitation stage, so that individual requirements are met. In addition, through the design of a buffer structure, action indication, a backrest grip and the like, the use comfort and safety are improved, and therefore the effect and experience of rehabilitation training are integrally improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rehabilitation training equipment, in particular to a leg muscle rehabilitation training device. BACKGROUND

[0002] With the deepening of the process of social aging in China, the incidence of nervous system diseases such as stroke also shows an upward trend. Patients suffering from such diseases often have varying degrees of limb dysfunction, among which impaired lower limb motor ability is particularly common, which directly affects the patient's autonomous transfer and independent walking ability, and seriously reduces their self-care level in daily life, not only bringing pain to the patients personally, but also causing significant care pressure to the family and society. Under the traditional rehabilitation mode, therapists mainly rely on one-on-one manual training. This mode not only makes therapists face high work intensity, but also leads to high rehabilitation costs. At the same time, the rehabilitation effect is closely related to the experience and level of the therapist, and its efficiency and stability cannot meet the continuous and personalized rehabilitation needs of the majority of patients.

[0003] In the prior art, the traditional lower limb rehabilitation training equipment generally has the problems of complex structure design and inconvenient operation, which limits its applicability and popularization range to some extent. More prominent is that most of the rehabilitation training devices on the market have too single function, and their training mode is often focused on the flexion and extension movements of the legs, while the training of leg adduction and abduction, i.e. opening and closing movements, is seriously neglected. This lack of function will directly lead to the fact that the adductor muscle group on the inner side of the thigh cannot be effectively exercised, so as to become weak and unable to form coordination and balance with the muscle groups on the front and back sides of the thigh. This uneven development of muscle strength will restrict the recovery of hip joint stability, and ultimately make the overall rehabilitation effect greatly discounted, and it is difficult to achieve the ideal functional recovery state. Therefore, the present application proposes a leg muscle rehabilitation training device to solve the above problems. SUMMARY

[0004] The present application aims to provide a leg muscle rehabilitation training device to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a leg muscle rehabilitation training device, comprising: a bottom plate and a support plate fixed to the upper surface of the bottom plate, a seat plate is provided above the support plate, and the seat plate is fixedly connected with the support plate through fixing columns at the four corners of the lower surface thereof; Two leg supporting plates are symmetrically arranged below the seat plate, a foot placing groove for placing feet is formed on the upper side of the first end of the leg supporting plate, a support frame is fixedly connected to the lower surface of the first end, and a roller is rotatably installed in the support frame through a limiting shaft; A second end of the leg support plate and the seat plate are provided with an opening and closing assembly for driving the two leg support plates to move towards or away from each other. The support plate is fixedly connected to the bottom of the fixed frame on the upper surface of one end close to the rollers, the top of the fixed frame is provided with a bending and stretching assembly, the bottom of the fixed frame is provided with a resistance increasing assembly on the side away from the rollers, one side of the resistance increasing assembly is provided with a resistance assembly for providing resistance for the opening and closing movement of the two leg support plates, and the resistance increasing assembly is configured to provide an adjustable resistance source to the resistance assembly.

[0006] Preferably, the upper surface of the seat plate is fixedly connected with handles on both sides symmetrically, the handles are provided with backrest plates on one side, the backrest plates are fixedly connected to the seat plate through steel rods, and the first guide plates are arranged between the two fixed columns.

[0007] Preferably, the opening and closing assembly comprises a driving plate, the bottom of the driving plate is slidably installed in the first guide plate, the top of the driving plate is provided with tooth grooves on both sides, the leg support plate is fixedly sleeved on the outer surface of the limiting sleeve on one end close to the seat plate, the inner surface of the limiting sleeve is rotatably sleeved on the outer surface of one of the fixed columns, and an incomplete gear is fixedly sleeved on the bottom of the limiting sleeve and is in meshing transmission with the tooth grooves.

[0008] Preferably, the resistance assembly comprises a connecting block, one end of the connecting block is fixedly connected with the driving plate, the other end of the connecting block is slidably sleeved on one end of the limiting rod, the other end of the limiting rod is fixedly connected with a fixed block, the fixed block is fixedly connected to the support plate, and the fixed block and the connecting block are fixedly connected through a first resistance spring.

[0009] Preferably, the resistance increasing assembly comprises a fixed plate, the fixed plate is embeddedly fixedly installed in the support plate, four guide sleeves are fixedly sleeved on the fixed plate, the four guide sleeves are arranged in a rectangular shape, a second guide plate is arranged between the four guide sleeves, the second guide plate is fixedly connected to the lower side of the fixed plate and slidably connected to the upper side of the sliding block, a guide column is slidably sleeved in each guide sleeve, the top of the guide column is fixedly connected to the connecting plate, and the top of the guide column is fixedly connected to the fixed plate through a second resistance spring.

[0010] Preferably, the sliding block is fixedly connected with vertical plates on both sides, the vertical plates are provided with guide holes in the side walls, the upper surface of the sliding block is in a wavy shape, the lower surface of the connecting plate is fixedly connected to the top of the connecting seat at the middle position, the connecting seat is rotatably sleeved with a roller at the bottom, the roller is slidably connected to the upper surface of the sliding block, the fixed plate is fixedly connected with a guide seat on the upper surface of the side close to the fixed block, the sliding block is provided with a slot on the side close to the guide seat, the driving plate is provided with a threaded hole on the opposite side of the guide seat, and a jack is threadedly sleeved in the threaded hole.

[0011] Preferably, the flexion and extension assembly comprises an L-shaped plate fixedly connected to the top of the fixing frame, one end of the L-shaped plate is fixedly connected with an indicating block, the other end of the L-shaped plate is fixedly connected with the top of the steel plate, and the lower surface of the middle part of the L-shaped plate is fixedly connected with a guide block.

[0012] Preferably, one side of the guide block is provided with a moving seat, the other side of the guide block is provided with a soft head pressing block, the moving seat and the soft head pressing block are fixedly connected through a guide rod, and the guide rod is slidably sleeved in the guide block.

[0013] Preferably, the moving seat is fixedly connected with a connecting head on the opposite side of the steel plate, the two connecting heads are fixedly connected through a resistance tension spring, one end of the guide rod close to the soft head pressing block is slidably sleeved with a sliding plate, the sliding plate is fixedly connected with the opposite side of the soft head pressing block through a buffer spring, the sliding plate is fixedly connected with the opposite side of the soft head pressing block through a connecting rod, and the connecting rod is slidably sleeved in the guide block.

[0014] Preferably, one end of the moving seat close to the steel plate is rotationally connected with one end of a transmission plate through a fixed pin, the other end of the transmission plate is rotationally connected with the bottom of a rotating block through a connecting pin, the top of the rotating block is rotationally connected with the guide block through a limiting pin, one side of the bottom of the rotating block is fixedly connected with one end of a connecting frame, and the other end of the connecting frame is rotationally connected with a pedal through a connecting shaft.

[0015] Compared with the prior art, the present application has the following advantages: 1. By skillfully setting the opening and closing training mechanism and the flexion and extension training mechanism, the main muscle groups of the legs can be fully exercised on the same device, and the patient can perform the opening and closing movement and the flexion and extension pedaling movement of the legs in sequence or alternately, which not only effectively trains the extensor and flexor muscles on the front and back sides of the thighs, but also more specifically strengthens the medial thigh muscle group which is often neglected, the integrated design overcomes the disadvantages of single function of traditional equipment, and makes the muscle groups of the lower limbs develop coordinately, effectively improves the problem of unstable gait caused by muscle strength imbalance, and improves the comprehensiveness and overall effect of rehabilitation training.

[0016] 2. A flexible resistance enhancement mechanism is introduced for the opening and closing training. By simple screwing operation, the pretightening force of the internal spring system can be changed, so that different resistance levels are provided for the opening and closing movement of the legs, and the rehabilitation therapist or the patient himself can easily and accurately control the training intensity according to the recovery process, so as to meet the differentiated needs in different stages from early rehabilitation to later strengthening, avoid the training effect bottleneck caused by fixed resistance of traditional equipment, and promote the continuous improvement of rehabilitation effect.

[0017] 3. The device takes into full consideration the ergonomics and safety of rehabilitation training. It is equipped with comfortable backrest and handgrip, providing stable support for patients, facilitating force exertion and reducing fatigue. In the flexion and extension training mechanism, buffer springs and indicator blocks are set to clearly indicate the standard motion amplitude and effectively absorb the impact generated by excessive force exertion, preventing secondary injury caused by motion overload. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the overall structure of the present application; Figure 3 It is a schematic diagram of the overall structure of the present application; Figure 4 It is a schematic diagram of the overall structure of the present application; Figure 5 It is a schematic diagram of the internal structure of the present application; Figure 6 It is a schematic diagram of the internal structure of the present application; Figure 7 It is a schematic diagram of the internal structure of the present application; Figure 8 It is a schematic diagram of the internal structure of the present application; Figure 9 It is a schematic diagram of the internal structure of the present application; Figure 6 It is an enlarged schematic diagram of the structure at A in the present application; Figure 10 It is an enlarged schematic diagram of the structure at B in the present application; Figure 6 Figure 11 It is an enlarged schematic diagram of the structure at C in the present application; Figure 7 It is an enlarged schematic diagram of the structure at D in the present application; Figure 12 Figure 7 It is an enlarged schematic diagram of the structure at E in the present application; Figure 13 It is an enlarged schematic diagram of the structure at E in the present application; Figure 7

[0019] ​​​In the figure: 1, bottom plate; 2, support plate; 3, seat plate; 4, fixed column; 5, leg support plate; 6, foot slot; 7, support frame; 8, roller; 9, fixed frame; 10, handle; 11, backrest plate; 12, first guide plate; 13, drive plate; 14, gear slot; 15, limit sleeve; 16, incomplete gear; 17, connecting block; 18, limit rod; 19, fixed block; 20, first resistance spring; 21, fixed plate; 22, guide sleeve; 23, second guide plate; 24, sliding block; 25, guide column; 26, connecting plate; 27, second resistance spring; 28, vertical plate; 29, guide hole; 30, connecting seat; 31, roller; 32, guide seat; 33, insertion slot; 34, threaded hole; 35, jacking rod; 36, L-shaped plate; 37, indicating block; 38, steel plate; 39, guide block; 40, moving seat; 41, soft head pressing block; 42, guide rod; 43, connecting head; 44, resistance tension spring; 45, sliding plate; 46, buffer spring; 47, transmission plate; 48, rotating block; 49, connecting frame; 50, pedal; 51, connecting rod. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme of the present application clear, complete and the advantages more clear and obvious, the embodiments of the present application are further described in detail below with reference to the drawings. It should be understood that the specific embodiments described here are part of the embodiments of the present application, not all the embodiments, only to explain the embodiments of the present application, and not for the purpose of limiting the embodiments of the present application, all other embodiments obtained by the person skilled in the art without doing creative work, belong to the scope of protection of the present application.

[0021] Please refer to Figures 1 to 13The application provides a technical scheme: a leg muscle rehabilitation training device, which comprises a bottom plate 1 and a support plate 2 fixed to the upper surface of the bottom plate 1. The support plate 2 is fixedly connected to the bottom plate 1 and the upper surface of the bottom plate 1 to stably support the whole device. A seat plate 3 is arranged above the support plate 2 and supports rehabilitation to facilitate sitting on the whole device. The seat plate 3 is fixedly connected to the support plate 2 through fixing columns 4 at the four corners of the lower surface of the seat plate 3 and stably supports the seat plate 3. Two leg supporting plates 5 are symmetrically arranged below the seat plate 3 and facilitate the placement of the legs of a rehabilitation person. A foot placing groove 6 for placing feet is formed in the upper side of the first end of each leg supporting plate 5 to limit the feet and ensure the stability of the placement of the legs on the leg supporting plates 5. A support frame 7 is fixedly connected to the lower surface of the first end of each leg supporting plate 5. A roller 8 is rotatably installed in the support frame 7 through a limiting shaft. The first end of each leg supporting plate 5 is the end away from the seat plate 3. An opening and closing assembly is arranged between the second end of each leg supporting plate 5 and the seat plate 3. The second end of each leg supporting plate 5 is the end close to the seat plate 3. The opening and closing assembly is used for driving the two leg supporting plates 5 to move away from or close to each other. The upper surface of the end of the support plate 2 close to the roller 8 is fixedly connected to the bottom of a fixing frame 9. A flexion and extension assembly is arranged on the top of the fixing frame 9. A resistance increasing assembly is arranged on the side of the fixing frame 9 away from the roller 8. A resistance assembly is arranged on one side of the resistance increasing assembly. The resistance assembly is used for providing resistance for the opening and closing movement of the two leg supporting plates 5. The resistance increasing assembly is configured to provide an adjustable resistance source for the resistance assembly.

[0022] When the rehabilitation person uses the device, the person sits on the seat plate 3 fixedly supported by the fixing columns 4. In the initial state, the two leg supporting plates 5 are in close contact and the feet of the rehabilitation person are placed on the foot placing grooves 6, so that the whole leg is limited and the leg is prevented from falling off the leg supporting plates 5 during movement. When the opening and closing training of the leg is performed, the two legs of the person are forced to open outward, and the two leg supporting plates 5 are driven to open away from each other under the cooperation of the opening and closing assembly. In the opening process of the leg supporting plates 5, the resistance assembly arranged therein provides resistance during opening, so that the adductor muscle group of the leg is trained, and the subsequent resetting of the leg supporting plates 5 is facilitated. In the movement process of the leg supporting plates 5, the roller 8 slides on the bottom plate 1 through the cooperation of the support frame 7 and the roller 8, so as to improve the movement stability of the leg supporting plates 5. In order to improve the training intensity, the resistance increasing assembly arranged therein provides an adjustable resistance source for the resistance assembly, so as to improve the rehabilitation training intensity. In order to further improve the rehabilitation effect, the flexion and extension assembly is arranged on the top of the fixing frame 9 to realize the stretching strength training and swinging training of the leg, so as to achieve better rehabilitation training effect.

[0023] The two sides of the upper surface of the seat plate 3 are symmetrically and fixedly connected with handles 10, one side of the handle 10 is provided with a backrest plate 11, the backrest plate 11 is fixedly connected with the seat plate 3 through a steel rod, a first guide plate 12 is arranged between the two fixed columns 4, two handles 10 are arranged on the seat plate 3, so that the rehabilitation personnel can exert force more conveniently, and the rehabilitation personnel can sit on the seat plate 3 more stably, and the backrest plate 11 can also provide a support point for the rehabilitation personnel to exert force, so that the rehabilitation personnel can exert force better, and the rehabilitation personnel can also rest on the backrest plate 11.

[0024] The opening and closing assembly comprises a driving plate 13, the bottom of the driving plate 13 is slidably installed in the first guide plate 12, the first guide plate 12 limits the driving plate 13 to slide in the first guide plate 12, the top of the driving plate 13 is provided with a gear groove 14 on both sides, the end of the leg supporting plate 5 close to the seat plate 3 is fixedly sleeved on the outer ring surface of a limiting sleeve 15, the inner ring surface of the limiting sleeve 15 is rotatably sleeved on the outer ring surface of one of the fixed columns 4, the fixed column 4 limits the limiting sleeve 15, and the bottom of the limiting sleeve 15 is fixedly sleeved with an incomplete gear 16, and the incomplete gear 16 is in meshing transmission with the gear groove 14.

[0025] When the rehabilitation personnel opens the two legs outward, the leg supporting plate 5 is driven to move synchronously, the leg supporting plate 5 drives the limiting sleeve 15 fixedly sleeved at one end to rotate under the limitation of the fixed column 4, the limiting sleeve 15 drives the incomplete gear 16 to rotate, the incomplete gear 16 is in meshing transmission with the gear groove 14 arranged on the driving plate 13, so that the driving plate 13 moves away from the seat plate 3 under the limitation of the first guide plate 12.

[0026] The resistance assembly comprises a connecting block 17, one end of the connecting block 17 is fixedly connected with the driving plate 13, the other end of the connecting block 17 is slidably sleeved on one end of a limiting rod 18, the limiting rod 18 limits the connecting block 17, the other end of the limiting rod 18 is fixedly connected with a fixed block 19, the fixed block 19 is fixedly connected on the supporting plate 2, the fixed block 19 fixedly supports the limiting rod 18, and the fixed block 19 is fixedly connected with the connecting block 17 through a first resistance spring 20.

[0027] When the driving plate 13 moves, the connecting block 17 is driven to move synchronously, the connecting block 17 slides under the limitation of the limiting rod 18, so that the connecting block 17 compresses the first resistance spring 20, the first resistance spring 20 is compressed and deformed, thereby providing resistance for the movement of the driving plate 13, thereby facilitating the provision of resistance for the opening of the leg supporting plate 5, thereby achieving the purpose of opening and closing training, and under the reverse elastic force of the first resistance spring 20, the leg supporting plate 5 is reset.

[0028] The resistance-increasing assembly includes a fixed plate 21, which is embedded and fixedly installed inside a support plate 2. Four guide sleeves 22 are fixedly sleeved on the fixed plate 21, arranged in a rectangular shape. A second guide plate 23 is positioned between the four guide sleeves 22. The lower side of the second guide plate 23 is fixedly connected to the fixed plate 21, and the upper side of the second guide plate 23 is slidably connected to a sliding block 24, providing guidance and limiting for the sliding block 24. A guide post 25 is slidably sleeved within each guide sleeve 22, supporting and limiting the guide post 25, thereby allowing the guide post 25 to rise and fall within the guide sleeve 22. The upper top surface of the guide post 25 is fixedly connected to a connecting plate 26, and the lower top surface of the guide post 25 is connected to the fixed plate 21 via a connecting plate 26. Two resistance springs 27 are fixedly connected. Vertical plates 28 are fixedly connected to both sides of the sliding block 24. Guide holes 29 are opened on the side walls of the vertical plates 28. The upper surface of the sliding block 24 is "wavy". The middle position of the lower surface of the connecting plate 26 is fixedly connected to the top of the connecting seat 30. The bottom of the connecting seat 30 is rotatably fitted with a roller 31. The connecting seat 30 limits the roller 31. The roller 31 is slidably connected to the upper surface of the sliding block 24. A guide seat 32 is fixedly connected to the upper surface of the fixed plate 21 near the fixed block 19. A slot 33 is opened on the side of the sliding block 24 near the guide seat 32. A threaded hole 34 is opened on the side of the drive plate 13 opposite to the guide seat 32. A push rod 35 is threaded in the threaded hole 34. The push rod 35 is slidably inserted into the guide seat 32 and the slot 33.

[0029] When the intensity of leg opening and closing training needs to be increased, the push rod 35 is twisted. Since the push rod 35 is threadedly connected to the drive plate 13, the push rod 35 can be twisted outward from the inside of the drive plate 13, so that the push rod 35 is screwed close to the guide seat 32 and initially inserted into the guide seat 32. Then, by opening the legs, the drive plate 13 can indirectly drive the push rod 35 to be inserted into the slot 33. The push rod 35 is inserted into the slot 33 under the limit of the guide seat 32. As the drive plate 13 continues to move, the push rod 35 will drive the sliding block 24 to move towards the fixed frame 9 under the limit of the second guide plate 23. Since the upper surface of the sliding block 24 is "wavy", in the initial state, the roller 31 slides... Block 24 is in a recessed position. As the sliding block 24 slides, it will drive the roller 31 to slide upward through the sliding connection with the roller 31. Under the limit of the guide hole 29 opened in the upright plate 28, the roller 31 drives the connecting seat 30 to move. Since the top of the connecting seat 30 is fixedly connected to the connecting plate 26, the connecting seat 30 drives the guide column 25 to move upward under the limit of the guide sleeve 22. Then, the guide column 25 pulls the second resistance spring 27 between it and the fixed plate 21. There are four second resistance springs 27, which increases the resistance of the top rod 35 to push the sliding block 24, thereby indirectly improving the intensity of leg opening and closing training and achieving better rehabilitation effect.

[0030] The bending and stretching assembly comprises an L-shaped plate 36 fixedly connected to the top of the fixing frame 9, the fixing frame 9 fixedly supports the L-shaped plate 36, the L-shaped plate 36 is symmetrically arranged at the two sides of the top of the fixing frame 9, one end of the L-shaped plate 36 is fixedly connected with an indicating block 37, the other end of the L-shaped plate 36 is fixedly connected with a steel plate 38, the middle lower surface of the L-shaped plate 36 is fixedly connected with a guide block 39, one side of the guide block 39 is provided with a moving seat 40, the other side of the guide block 39 is provided with a soft head pressing block 41, the moving seat 40 and the soft head pressing block 41 are fixedly connected through a guide rod 42 between the two sides of the moving seat 40 and the soft head pressing block 41, the guide rod 42 is slidably sleeved in the guide block 39, the guide block 39 guides and positions the guide rod 42, the moving seat 40 is fixedly connected with a connecting head 43 on the opposite side of the steel plate 38, the two connecting heads 43 are fixedly connected through a resistance tension spring 44, one end of the guide rod 42 close to the soft head pressing block 41 is slidably sleeved with a sliding plate 45, the sliding plate 45 is fixedly connected with the soft head pressing block 41 through a buffer spring 46 on the opposite side of the soft head pressing block 41, the sliding plate 45 is fixedly connected with the soft head pressing block 41 through a connecting rod 51 on the side opposite to the soft head pressing block 41, the connecting rod 51 is slidably sleeved in the guide block 39, one end of the moving seat 40 close to the steel plate 38 is rotatably connected with a transmission plate 47 through a fixed pin, the other end of the transmission plate 47 is rotatably connected with a rotating block 48 at the bottom through a connecting pin, the top of the rotating block 48 is rotatably connected with the guide block 39 through a limiting pin, one side of the bottom of the rotating block 48 is fixedly connected with one end of a connecting frame 49, the other end of the connecting frame 49 is rotatably connected with a pedal 50 through a connecting shaft, the connecting frame 49 and the pedal 50 are rotatably connected, so that the flexibility of the pedal 50 during the treading process is improved.

[0031] When the rehabilitation personnel need to do the flexion and extension training, the back is attached to the backrest plate 11, both hands hold the two handles 10, and the legs are lifted to place the feet in the treadle 50. The treadle 50 is internally provided with anti-skid lines to improve the friction between the soles and the treadle 50. In the initial state, the legs of the rehabilitation personnel are in the flexed state. The feet are driven to kick the treadle 50, thereby driving the rotating block 48 to rotate under the limiting of the guide block 39 under the connecting effect of the connecting frame 49. At the same time, the legs are stretched and swing obliquely downward. In the rotating process of the rotating block 48, the transmission plate 47 is connected to the moving seat 40 in a rotating manner, so that the transmission plate 47 drives the moving seat 40 to move towards the indicating block 37. In the moving process of the moving seat 40, the moving seat 40 slides along the surface of the guide block 39 in cooperation with the guide rod 42, the connecting rod 51 and the guide block 39. At the same time, under the connecting effect of the connecting head 43, the resistance tension spring 44 is stretched to provide resistance in the flexion and extension training. Under the connecting effect of the guide rod 42, the soft head pressing block 41 is first abutted against the indicating block 37, thereby reminding the rehabilitation personnel whether the training is in place. With the continuous movement of the connecting rod 51, the sliding plate 45 compresses the buffer spring 46, thereby avoiding that the device is damaged due to excessive force when used by the personnel. At the same time, it is convenient for the subsequent treadle 50 to drive the feet and legs to reset, so as to finally realize the flexion and extension training of the legs and assist in training the leg swing, and realize the multifunctional rehabilitation training effect of the legs.

[0032] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A leg muscle rehabilitation trainer comprising a base plate (1) and a support plate (2) fixed to the upper surface of the base plate (1), characterized in that: The support plate (2) is provided with a seat plate (3) above, the seat plate (3) is fixedly connected with the support plate (2) through the fixed column (4) at the four corners of the lower surface thereof; Two leg supporting plates (5) are symmetrically arranged below the seat plate (3), a foot placing groove (6) for placing feet is formed in the upper side of the first end of the leg supporting plate (5), and a supporting frame (7) is fixedly connected to the lower surface of the first end, and a roller (8) is rotatably installed in the supporting frame (7) through a limiting shaft; An opening and closing assembly is arranged between the second end of the leg supporting plate (5) and the seat plate (3), and the opening and closing assembly is used for driving the two leg supporting plates (5) to perform opening and closing movements towards or away from each other; The upper surface of the support plate (2) on one side close to the roller (8) is fixedly connected with the bottom of a fixed frame (9), the top of the fixed frame (9) is provided with a flexion and extension assembly, the bottom of the fixed frame (9) on the side away from the roller (8) is provided with a resistance increasing assembly, one side of the resistance increasing assembly is provided with a resistance assembly, the resistance assembly is used for providing resistance for the opening and closing movement of the two leg supporting plates (5), and the resistance increasing assembly is configured to provide an adjustable resistance source to the resistance assembly.

2. The leg muscle rehabilitation trainer according to claim 1, characterized in that: The upper surface of the seat plate (3) is fixedly connected with a handle (10) on both sides thereof, the handle (10) is provided with a backrest plate (11) on one side, the backrest plate (11) is fixedly connected with the seat plate (3) through a steel rod, and a first guide plate (12) is arranged between the two fixed columns (4).

3. The leg muscle rehabilitation trainer according to claim 2, characterized in that: The opening and closing assembly comprises a driving plate (13), the bottom of the driving plate (13) is slidably installed in the first guide plate (12), tooth grooves (14) are formed in the top of the driving plate (13) on both sides, the end of the leg supporting plate (5) close to the seat plate (3) is fixedly sleeved on the outer circumferential surface of a limiting sleeve (15), the inner circumferential surface of the limiting sleeve (15) is rotatably sleeved on the outer circumferential surface of one of the fixed columns (4), an incomplete gear (16) is fixedly sleeved on the bottom of the limiting sleeve (15), and the incomplete gear (16) is in meshing transmission with the tooth grooves (14).

4. The leg muscle rehabilitation trainer according to claim 3, characterized in that: The resistance assembly comprises a connecting block (17), one end of the connecting block (17) is fixedly connected with the driving plate (13), the other end of the connecting block (17) is slidably sleeved on one end of a limiting rod (18), the other end of the limiting rod (18) is fixedly connected with a fixed block (19), the fixed block (19) is fixedly connected to the support plate (2), and the fixed block (19) and the connecting block (17) are fixedly connected through a first resistance spring (20).

5. The leg muscle rehabilitation trainer according to claim 1, characterized in that: The resistance increasing assembly comprises a fixed plate (21) fixedly and embeddedly installed in the support plate (2), four guide sleeves (22) fixedly sleeved on the fixed plate (21), the four guide sleeves (22) arranged in a rectangular shape, a second guide plate (23) arranged between the four guide sleeves (22), the second guide plate (23) fixedly connected with the fixed plate (21) at the lower side, and a sliding block (24) slidably connected with the second guide plate (23) at the upper side, a guide column (25) slidably sleeved in each guide sleeve (22), the guide column (25) fixedly connected with a connecting plate (26) at the top upper surface, and the guide column (25) fixedly connected with the fixed plate (21) at the top lower surface through a second resistance spring (27).

6. The leg muscle rehabilitation trainer according to claim 5, characterized in that: The sliding block (24) is fixedly connected with a vertical plate (28) at both sides, the vertical plate (28) is provided with a guide hole (29) in the side wall, the upper surface of the sliding block (24) is in a "wavy shape", the lower surface of the connecting plate (26) is fixedly connected with a connecting seat (30) at the middle position, the connecting seat (30) is rotatably sleeved with a roller (31) at the bottom, the roller (31) is slidably connected with the upper surface of the sliding block (24), the upper surface of the fixed plate (21) is fixedly connected with a guide seat (32) near the fixed block (19), the side of the sliding block (24) near the guide seat (32) is provided with a slot (33), the side, opposite to the guide seat (32), of the driving plate (13) is provided with a threaded hole (34), and the threaded hole (34) is threadedly sleeved with a jacking rod (35).

7. The leg muscle rehabilitation trainer according to claim 1, characterized in that: The bending and stretching assembly comprises an L-shaped plate (36), the L-shaped plate (36) is fixedly connected with the top of the fixed frame (9), the L-shaped plate (36) is fixedly connected with an indicating block (37) at one end, the L-shaped plate (36) is fixedly connected with a steel plate (38) at the other end, and the L-shaped plate (36) is fixedly connected with a guide block (39) at the middle lower surface.

8. The leg muscle rehabilitation trainer according to claim 7, characterized in that: The guide block (39) is provided with a moving seat (40) at one side, the guide block (39) is provided with a soft head pressing block (41) at the other side, the moving seat (40) and the soft head pressing block (41) are fixedly connected through a guide rod (42) at both sides, and the guide rod (42) is slidably sleeved in the guide block (39).

9. The leg muscle rehabilitation trainer according to claim 8, characterized in that: The moving seat (40) and the steel plate (38) are fixedly connected with connecting heads (43) at opposite sides, the connecting heads (43) are fixedly connected through a resistance tension spring (44) between the two connecting heads (43), one end of the guide rod (42) near the soft head pressing block (41) is slidably sleeved with a sliding plate (45), the sliding plate (45) is fixedly connected with the soft head pressing block (41) through a buffer spring (46) at the opposite side, the sliding plate (45) is fixedly connected with the soft head pressing block (41) through a connecting rod (51) at the opposite side, and the connecting rod (51) is slidably sleeved in the guide block (39).

10. The leg muscle rehabilitation trainer according to claim 9, characterized in that: The mobile seat (40) is rotatably connected with one end of the transmission plate (47) through a fixing pin on the side close to the steel plate (38), the other end of the transmission plate (47) is rotatably connected with the bottom of the rotating block (48) through a connecting pin, the top of the rotating block (48) is rotatably connected with the guide block (39) through a limiting pin, one side of the bottom of the rotating block (48) is fixedly connected with one end of the connecting frame (49), and the other end of the connecting frame (49) is rotatably connected with the pedal (50) through a connecting shaft.

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