Lower limb flexion and extension trainer

Abstract

The utility model relates to the field of exercise rehabilitation, and discloses a lower limb flexion and extension trainer which comprises a main body, a hip supporting piece, a pedal and an inclination adjusting piece. The main body extending in the longitudinal direction is provided with a sliding rail, and the hip supporting piece is arranged on the main body and can be connected to the sliding rail in a longitudinal sliding mode. The pedal is rotatably connected to the main body and is fixed relative to the longitudinal position of the sliding rail; the main body is coupled to a tilt adjuster that may tilt the slide rail in a direction in which the hip support is lower than the pedal. The lower limb flexion and extension trainer is simple in structure, the sliding rail (the main body) can be adjusted to a proper inclination angle according to needs of a trainee, and therefore loads generated when the feet, the ankles, the shanks and the thighs bend are increased through the gravity of the trainer. In the exercising process, the load of knee joints can be prevented from being increased, the knee joints can be protected, and coherent functional flexion and extension of feet, shanks, thighs and hip joints are achieved.

Description

Technical Field

[0001] This utility model relates to the field of sports rehabilitation, and in particular to training devices related to lower limb movement. Background Technology

[0002] Post-operative rehabilitation equipment is needed to move the affected joints and improve their stability after knee and ankle surgeries. However, existing rehabilitation equipment has complex and expensive components for adjusting the training load during lower limb flexion and extension exercises, hindering widespread adoption. Furthermore, directly training lower limb muscles through jumping and landing movements places a heavy load on the knee joint, increasing the risk of injury. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a lower limb flexion and extension training device for trainees to perform lower limb flexion and extension training to exercise lower limb muscles and joints.

[0004] The lower limb flexion and extension trainer disclosed herein includes a main body, a hip support, a foot pedal, and an incline adjustment mechanism.

[0005] The main body extends longitudinally and is equipped with a slide rail. The hip support is mounted on the main body and is longitudinally slidably connected to the slide rail. The pedal is rotatably connected to the main body, and the longitudinal position of the pedal relative to the slide rail is fixed. The main body is coupled to a tilt adjustment member, which allows the slide rail to tilt in the direction where the hip support is lower than the pedal.

[0006] Specifically, the tilt adjustment component includes a first bracket, a second bracket, and a connector. The first bracket and the second bracket are respectively disposed at both ends of the main body. The connector is coupled to the first bracket and can move along the height direction of the first bracket. The two ends of the main body are respectively hinged to the connector and the second bracket.

[0007] More specifically, a first bracket is located at one end of the main body near the pedal. The first bracket has a vertical rod with several height adjustment holes arranged along the height direction. The connector is configured to include a bracket sleeve and a protrusion located on the outside of the bracket sleeve. The protrusion has a shaft hole for hinged to the main body. The bracket sleeve is adapted to be fitted onto the vertical rod and has a through hole. The tilt adjustment component also includes a fixed shaft that extends through one of the height adjustment holes and the through hole.

[0008] Specifically, the main body is provided with a connecting shaft extending laterally, and the pedal includes a first plate and a second plate arranged in parallel planes. The first plate is rotatably connected to the connecting shaft, and the second plate can rotate relative to the first plate in the plane. The second plate is used to support the ball of the foot.

[0009] More specifically, the first plate is provided with a connecting hole on a side away from the second plate, and a connecting shaft extends through the connecting hole to rotatably connect the first plate to the connecting shaft. The second plate is provided with a support on a side close to the first plate, and the first plate is provided with a support hole through which the support extends to allow the second plate to rotate in a plane relative to the first plate. The first plate is rotatable about the connecting shaft by a first angle, and the second plate is rotatable in the plane relative to the first plate by a second angle, and the first angle or the second angle can be selectively locked.

[0010] Optionally, the connecting shaft is provided with a limiting portion protruding from an outer periphery of the connecting shaft, and the limiting portion is used to limit a range of the first angle. Optionally, the pedal further comprises a first angle adjusting disc and a first locking shaft. The first angle adjusting disc is arranged on a side of the first plate away from the second plate, and the connecting hole is arranged on the first angle adjusting disc. The first angle adjusting disc is further provided with a plurality of first angle holes arranged in a circumferential direction. The main body is provided with a first angle locking hole. When the first angle is locked, the first locking shaft is arranged in parallel with the connecting shaft, and the first locking shaft extends through the first angle hole to the first angle locking hole. Optionally, the pedal further comprises a second angle adjusting disc and a second locking shaft. The second angle adjusting disc is arranged between the first plate and the second plate and is fixed to the support. The second angle adjusting disc is provided with a plurality of second angle holes arranged in a circumferential direction. The first plate is provided with a second locking hole. When the second angle is locked, the second locking shaft is arranged in parallel with the support, and the second locking shaft extends through the second locking hole to the second angle hole.

[0011] In some embodiments, the lower limb flexion and extension trainer further comprises a resistance member, a pulley and a connecting rod. The resistance member is configured to increase resistance during flexion of the lower limb. The connecting rod is fixedly connected to a bottom of the hip support. The pulley is rotatably connected to the connecting rod. The pulley is arranged on the slide rail such that the hip support is longitudinally slidably connected to the slide rail. The pedal is configured to be two, and the two pedals are arranged on two sides of the main body, respectively. Specifically, the resistance member is configured to be an elastic rope. The elastic rope is fixed to one of the first support and the second support away from the pedal. The elastic rope is configured to be suitable for being connected to the trainer.

[0012] The features and advantages of the present disclosure include:

[0013] The lower limb flexion and extension training device of the present disclosure has simple structure, and the slide rail (main body) can be adjusted to a suitable inclination angle according to the needs of the trainer, so as to increase the weight of the foot, ankle, lower leg and thigh during the bending movement of the foot, ankle, lower leg and thigh by the gravity of the trainer. In the process of exercise, the load of the knee joint can be avoided to be increased, the knee joint is protected, and the functions of the foot, lower leg, thigh and hip joint are flexed and extended in sequence. The lower limb flexion and extension training device of the present disclosure can also enable the people who cannot squat due to the injury of the knee joint to complete the simulation squatting action in the condition of no gravity, and the muscles participating in the force can be trained in the simulation squatting action, so as to further help the rehabilitation. In addition, when the lower limb flexion and extension training device of the present disclosure is used to perform the lower limb flexion and extension movement, the hip joint, knee joint and ankle joint of the lower limb work in cooperation, which is beneficial to the rehabilitation after the knee joint surgery and the ankle joint surgery. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Figure 1 A schematic view of the lower limb flexion and extension training device of the present disclosure is shown;

[0016] Figure 2 Another schematic view of the lower limb flexion and extension training device of the present disclosure is shown; Figure 1

[0017] Figure 3 An exploded schematic view of the lower limb flexion and extension training device of the present disclosure is shown; Figure 1

[0018] A schematic view of the hip support and other components of the present disclosure is shown; Figure 4

[0019] A schematic view of another embodiment of the pedal of the present disclosure is shown; Figure 5

[0020] Another schematic view of the pedal of the present disclosure is shown; Figure 6 Figure 5 An exploded schematic view of the pedal of the present disclosure is shown;

[0021] Figure 7 Figure 5 A schematic view of the first plate of the pedal of the present disclosure is shown;

[0022] Figure 8 A schematic view of the second plate of the pedal of the present disclosure is shown; Figure 5

[0023] A schematic view of the pedal of the present disclosure provided with a pedal plate is shown; Figure 9 Figure 5 ​​​​Schematic view of the lower limb flexion and extension trainer of the pedal;

[0024] Figure 10 Another schematic view of the lower limb flexion and extension trainer is shown. Figure 9

[0025] Figure 11 Schematic view of the trainer using the lower limb flexion and extension trainer, in which the lower limbs of the trainer make a stretching movement.

[0026] Figure 12 Schematic view of the trainer using the lower limb flexion and extension trainer, in which the lower limbs of the trainer make a bending movement.

[0027] BRIEF DESCRIPTION OF DRAWINGS

[0028] 100 - lower limb flexion and extension trainer;

[0029] 101 - hip support, 102 - connecting shaft, 103 - limiting part, 104 - connecting rod, 105 - pulley, 106 - fixed shaft, 107 - elastic rope, 108 - stopper, 109 - hinged shaft, 111 - movement direction;

[0030] 10 - main body, 12 - slide rail, 14 - first locking hole;

[0031] 20 - pedal, 21 - first plate, 22 - second plate, 23 - support hole, 24 - connecting hole, 25 - second locking hole, 26 - support, 27 - first angle adjusting disc, 28 - first angle hole, 29 - first locking shaft, 31 - second angle adjusting disc, 32 - second angle hole, 33 - second locking shaft, 34 - end plate, 35 - binding belt;

[0032] 40 - first support, 41 - vertical rod, 42 - horizontal rod, 43 - height adjusting hole;

[0033] 50 - second support, 51 - vertical rod, 52 - horizontal rod, 53 - hinged protrusion;

[0034] 60 - connecting piece, 61 - support sleeve, 62 - protrusion, 63 - through hole, 64 - shaft hole. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below in combination with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present disclosure.

[0036] ​In describing the present application, the "proximal end" is the end away from the trainee's foot, and the "distal end" is the end close to the trainee's foot. When one or more components are described as connected, linked, fixed, coupled, attached, or otherwise interconnected, such interconnection can be a direct interconnection between components, or can be an indirect interconnection, such as through the use of one or more intermediate components.

[0037] Referring to Figures 1 to 3 The lower limb flexion and extension trainer 100 of the present disclosure comprises a main body 10, a hip support 101, a pedal 20, and an inclination adjusting member. The main body 10 extends longitudinally, and is provided with a slide rail 12 extending longitudally. The hip support 101 is disposed on the main body 10 and is longitudinally slidably connected to the slide rail 12. The pedal 20 is rotatably coupled to the main body 10, and the longitudinal position of the pedal 20 relative to the slide rail 12 is fixed. The main body 10 is coupled to the inclination adjusting member, and the inclination adjusting member can incline the slide rail 12 toward the direction in which the hip support 101 is lower than the pedal 20.

[0038] When using the lower limb flexion and extension trainer, the user sits on the hip support 101 and places the feet on the pedal 20. The trainee moves the hip support 101 back and forth along the slide rail 12 in the lower limb flexion and extension movement, thereby approaching or moving away from the pedal 20. For example, when the lower limb is bent, the hip support 101 approaches the pedal 20; when the lower limb is straightened, the hip support 101 moves away from the pedal 20.

[0039] When the slide rail 12 is inclined toward the direction in which the hip support 101 is lower than the pedal 20, the trainee can increase the load on the relevant muscles when bending the lower limb, thereby enhancing the exercise of the relevant muscles, so that the trainee can simulate the action of squatting after jumping on the ground on the basis of reducing the load on the knee joint, thereby strengthening the exercise of the relevant muscles in the action. Specifically, when using the lower limb flexion and extension trainer 100 of the present disclosure to perform lower limb flexion and extension training, the foot muscles, ankle joint surrounding muscles, calf muscles, knee joint surrounding muscles, thigh muscles, and hip joint surrounding muscles can be exercised, and the strength training of these muscles can reduce muscle and joint injuries caused by jumping and landing. In addition, the lower limb flexion and extension trainer 100 of the present disclosure can also enable people who cannot squat due to knee injuries to complete the simulated squatting action in a weightless state, and perform strength training on the muscles participating in the force in the simulated squatting action, thereby further assisting in rehabilitation. Alternatively, the inclination angle of the slide rail 12 can be adjusted by adjusting the inclination adjusting member, so that the load on the hip and leg muscles can be adjusted, and the load size increases with the increase of the inclination angle. The inclination angle suitable for the trainee can be selected according to the needs of the trainee.

[0040] The rotatable pedal 20 means that the user can adjust the rotation angle of the pedal 20 at any time during the exercise, so as to move comfortably or strengthen the ankle, knee and related muscles by matching appropriate actions.

[0041] Specifically, in some embodiments, the inclination adjusting member is configured to include a fixed rod and an extendable rod, both of which are hinged to the main body 10, and the extendable rod is elongated or shortened to tilt the main body 10 (i.e. the slide rail 12) towards the direction of the hip support 101 below the pedal 20. Optionally, the fixed rod is arranged at the end of the main body 10 away from the pedal 20, and the fixed rod fixes the height of the proximal end of the main body 10, and the extendable rod is arranged at the end of the main body 10 close to the pedal 20, and the elongation of the extendable rod increases the height of the distal end of the main body 10, and the angle of the slide rail 12 tilting towards the direction of the hip support 101 below the pedal 20 is increased.

[0042] In other embodiments, referring to Figures 1 to 3 , the inclination adjusting member is configured to include a first bracket 40, a second bracket 50 and a connecting member 60. The first bracket 40 and the second bracket 50 are arranged at the two ends of the main body 10 respectively, and the connecting member 60 is coupled to the first bracket 40 and is selectively movable along the height direction of the first bracket 40, and the two ends of the main body 10 are hinged to the connecting member 60 and the second bracket 50 respectively. The first bracket 40 can be arranged at either end of the main body 10, which is not specifically limited here. When the first bracket 40 is arranged at the end of the main body 10 away from the pedal 20 and the initial slide rail 12 extends along the horizontal direction, the downward movement of the connecting member 60 along the height direction of the first bracket 40 can tilt the slide rail 12 towards the direction of the hip support 101 below the pedal 20. When the first bracket 40 is arranged at the end of the main body 10 close to the pedal 20 and the initial slide rail 12 extends along the horizontal direction, the upward movement of the connecting member 60 along the height direction of the first bracket 40 can tilt the slide rail 12 towards the direction of the hip support 101 below the pedal 20. Hereinafter, the first bracket 40 arranged at the end of the main body 10 close to the pedal 20 is taken as an example for introduction.

[0043] Specifically, the first bracket 40 includes a vertical rod 41 and a horizontal rod 42, and the vertical rod 41 is arranged vertically at the middle of the horizontal rod 42. The connecting member 60 can be coupled to the vertical rod 41 by clamping fixation or shaft hole fixation, etc. Continue to refer to Figures 1 to 3In the shaft hole fixing mode, the vertical rod 41 is provided with a plurality of height adjustment holes 43 arranged at intervals along the height direction, the connecting member 60 is configured to include a bracket sleeve 61 and a protrusion 62 arranged outside the bracket sleeve, and the inclination adjustment member further includes a fixing shaft 106. The bracket sleeve 61 is adapted to be sleeved to the vertical rod 41, the bracket sleeve 41 is provided with a through hole 63, the fixing shaft 106 extends through the through hole 63 and one height adjustment hole 43 to couple the connecting member 60 to the vertical rod 41, and the protrusion 62 is provided with a shaft hole 64 hinged to the main body 10. Specifically, the bracket sleeve 61 is configured as a four-walled shell, the protrusion is arranged at a side of the bracket sleeve 61 close to the main body 10, and the through hole 63 is arranged at two side walls adjacent to the side.

[0044] Specifically, the second bracket 50 includes a vertical rod 51 and a horizontal rod 52 arranged at both ends of the vertical rod 51, and a hinged protrusion 53 is arranged at a side of the vertical rod 51 close to the main body 10, and the hinged protrusion 53 is provided with a shaft hole hinged to the main body 10. It should be noted that in some embodiments, the horizontal rod 52 arranged at the upper part of the vertical rod 51 is not necessary. More specifically, both ends of the main body 10 are provided with shaft holes for hinging. Preferably, both ends of the main body 10 are provided with recesses so that the end portions form two protrusions, and shaft holes are arranged on the two protrusions. The lower limb flexion and extension trainer 100 includes two hinged shafts 109, the hinged protrusion 53 is located between the two protrusions at one end of the main body 10, the protrusion 62 is located between the two protrusions at the other end of the main body 10, and the hinged protrusion 53 and the protrusion 62 are respectively connected to the main body 10 through one hinged shaft 109.

[0045] Specifically, referring to Figure 3 and Figure 4 , the hip support 101 is configured as a plate and can be made of elastic material to increase comfort. The lower limb flexion and extension trainer 100 further includes a connecting rod 104 and a pulley 105, both ends of the connecting rod 104 are respectively connected to the hip support 101 and the pulley 105, and the pulley 105 is located in the slide rail 12. The number of pulleys 105 can be set according to needs, and one, two, three or four can be used. Preferably, four pulleys 105 are connected to the hip support 101 through the connecting rod 104. The slide rail 12 is configured to not only accommodate the pulleys 105 to slide freely relative to it, but also limit the pulleys 105 from escaping from the slide rail 12 in the opening direction of the slide rail 12. The pulleys 105 are arranged in the slide rail 12, which not only reduces the friction when the hip support 101 moves relative to the slide rail 12, but also guides the hip support 101 to move smoothly in the slide rail 12 and limits the hip support 101 from separating from the main body 10. Figure 3 The opening direction of the slide rail 12 shown is upward, and alternatively, the slide rail 12 can be arranged on both sides of the main body 10 (i.e., the opening direction of the slide rail is toward both sides).

[0046] Preferably, the rear part of the hip support 101 is provided with a backrest 108 for supporting the back of the user. The backrest 108 can be formed in any suitable shape, such as a plate or a bar bent into a shape. The backrest 108 can be fixedly connected to the hip support 101 by welding or screws.

[0047] Specifically, the distal end of the main body 10 is provided with a connecting shaft 102 extending in the transverse direction, and the pedals 20 are connected to the main body 10 through the connecting shaft 102. The pedals 20 are configured as two, and each of the pedals 20 is arranged on the two sides of the main body 10. In some embodiments, the connecting shaft 102 is configured as one, and the connecting shaft 102 can extend through the main body 10 and connect to the two pedals 20; in other embodiments, the connecting shaft 102 is configured as two, and the two connecting shafts 102 are arranged on the two sides of the main body 10, and each of the pedals 20 is connected to the main body 10 through one of the connecting shafts 102.

[0048] In some embodiments, the pedals 20 are connected to the connecting shaft 102 through a ball joint, so that the pedals 20 have three degrees of freedom. In other embodiments, referring to Figure 3 and Figure 5 , the pedals 20 include a first plate 21 and a second plate 22 arranged in parallel, the first plate 21 is rotatably connected to the connecting shaft 102, and the second plate 22 is rotatable relative to the first plate 21 in the plane of the plate, and the second plate 22 is used to support the foot.

[0049] Specifically, referring to Figure 3 、 Figures 5 to 8 , the side of the first plate 21 away from the second plate 22 is provided with a connecting hole 24, and the connecting shaft 102 extends through the connecting hole 24 so that the first plate 21 is rotatably connected to the connecting shaft 102. More specifically, the side of the first plate 21 away from the second plate 22 can be provided with two nuts, and each of the nuts can provide a connecting hole 24. The side of the second plate 22 close to the first plate 21 is provided with a support 26, and the first plate 21 is provided with a support hole 23, and the support 26 extends through the support hole 23 so that the second plate 22 is rotatable relative to the first plate 21 in the plane. Among them, the angle of rotation of the first plate 21 around the connecting shaft 102 is a first angle, and the angle of rotation of the second plate 22 relative to the first plate in the plane is a second angle. Optionally, the end of the support 26 away from the second plate 22 is provided with an end plate 34, which can be used to prevent the second plate 22 from separating from the first plate 21. Optionally, the support 26 is also provided with a partition plate parallel to the first plate 21 and located between the first plate 21 and the second plate 22, and the partition plate is used to reduce the frictional resistance of the second plate 22 rotating around the support 26 and the first plate 21.

[0050] Specifically, the second plate 22 is provided with a binding strap 35 on the side away from the first plate 21, for binding the foot sole. Optionally, the binding strap 35 is provided with an adjusting buckle, which can be adjusted according to the need. It needs to be added that in some embodiments, the pedal 20 comprises the first plate 21 and the second plate 22 arranged in parallel, the first plate 21 is rotatably connected to the connecting shaft 102, and the second plate 22 is rotatably connected to a second connecting shaft parallel to the main body 10 and fixed to the first plate 21. At this time, the pedal 20 has two degrees of freedom. The following continues to take the pedal 20 provided with the support 26 as an example for description.

[0051] Optionally, in some embodiments, referring to Figure 3 , the connecting shaft 102 is provided with a limiting portion 103 protruding from the outer circumference of the connecting shaft, which is used to limit the range of the first angle, that is, to limit the range of rotation of the first plate 21 (pedal 20) around the connecting shaft 102. When the normal line of the first plate 21 is parallel to the axis of the main body 10, the first angle is 0°, as shown in the first plate of the pedal on the left side of the proximal end looking toward the distal end in Figure 3 . Optionally, the range of the first angle is ±60°.

[0052] Optionally, the first angle or the second angle of the pedal 20 can be selectively locked, respectively. When doing some sports, it will be advantageous to have a fixed first angle or second angle. Specifically, referring to Figures 5 to 10 , the pedal 20 further comprises a first angle adjusting disc 27 and a first locking shaft 29, and the connecting hole 24 is arranged on the first angle adjusting disc 27. Specifically, the first angle adjusting disc 27 is arranged on the side of the first plate 21 away from the second plate 22. Optionally, the first angle adjusting disc 27 can be configured as a flat plate. The first angle adjusting disc 27 is provided with a plurality of first angle holes 28 arranged circumferentially, and the main body 10 is provided with a first angle locking hole 14, referring to Figure 10 . When the first angle is locked, the first locking shaft 29 is arranged in parallel with the connecting shaft 102, and the first locking shaft extends through the first angle hole to the first angle locking hole.

[0053] Referring to Figures 5 to 8 , the pedal 20 is provided with two first angle adjusting discs 27 arranged at intervals along the axial direction of the connecting shaft 102, and the angle between adjacent ones of the plurality of first angle holes 28 can be 10°, 20°, 30°, or 45°, etc. When it is necessary to lock the first angle, the first plate 21 can be rotated to the desired angle, and then the first locking shaft 29 can be connected to the first angle locking hole 14 after extending through the corresponding first angle holes 28 of the two first angle adjusting discs 27. In some embodiments, the first angle locking hole 14 is configured as a threaded hole, and the first locking shaft 29 is configured as a bolt.

[0054] Specifically, continuing to refer to Figures 5 to 8The pedal 20 further comprises a second angle adjusting disc 31 and a second locking shaft 33. The second angle adjusting disc 31 is located between the first plate 21 and the second plate 22 and is fixed to the support 26. The second angle adjusting disc 31 is provided with a plurality of second angle holes 32 arranged in a circumferential direction. The first plate 21 is provided with a second locking hole 25. When the second angle is locked, the second locking shaft 33 is arranged in parallel with the support 26 and extends through the second locking hole 25 to one of the second angle holes 32. When the second plate 22 coincides with the first plate 21, the second angle is 0°.

[0055] Optionally, the second angle adjusting disc 31 is configured as a circular flat plate. The angle between adjacent ones of the second angle holes 32 can be 10°, 20°, 30° or 45°, etc. When the second angle needs to be locked, the second plate 22 is rotated to the desired angle and the second locking shaft 33 is extended through the second locking hole 25 to one of the second angle holes 32. In some embodiments, the second angle holes 32 are configured as threaded holes and the second locking shaft 33 is configured as a bolt.

[0056] Referring to Figure 9 and Figure 10 , it is shown that the first angles of the two second plates 22 are both locked at 0° and the second angles of the two second plates 22 are locked at 45° and -45° respectively, forming a figure-eight shape.

[0057] Optionally, the lower limb flexion and extension trainer 100 further comprises a resistance member configured to increase the resistance during the flexion of the lower limb, i.e. to increase the resistance when the hip support 101 is moved towards the pedal 20 in the reciprocating movement. Specifically, in some embodiments, the resistance member is configured as a spring arranged on the slide rail 12 and connected to the hip support 101. One end of the spring is fixed to the distal end of the slide rail and the other end is fixed to the connecting rod 104. The spring is configured to generate an elastic resistance when the hip support 101 is moved towards the pedal 20 by a certain distance. The user needs to overcome the elastic resistance to further flex the lower limb when performing the flexion of the lower limb.

[0058] In other embodiments, the resistance member is configured as an elastic cord 107 fixed to one of the first support 40 and the second support 50 away from the pedal 20. Referring to Figure 3 , the elastic cord 107 is configured as two elastic cords 107 connected to the upper horizontal rod 52 of the second support 50 respectively. Specifically, the elastic cord 52 is configured to be suitable for being connected to the trainer. The end of the elastic cord 52 away from the horizontal rod 52 can be provided with an adhesive part or a buckle, etc. suitable for being connected to the waist of the trainer.

[0059] In the following Figure 11 and Figure 12The lower limb flexion and extension trainer 100 of the present disclosure is described as follows. First, the trainer can adjust the main body 10 to a suitable inclination angle according to the training needs. Specifically, the fixed shaft 106 is separated from the connecting piece 60, the connecting piece 60 is moved to a suitable height, and then the fixed shaft 106 is extended through the through hole 63 of the connecting piece 60 and the height adjustment hole 43 of the first support 40. Then, the trainer sits on the hip support 101, and the feet are placed on the second plate 22 respectively. Since the soles are fixed to the pedal 20, during the lower limb flexion and extension movement, the hip support 101 is driven to reciprocate along the track 12 by the muscle strength of the legs and hips.

[0060] Referring to Figure 11 , when the trainer performs the lower limb extension movement, the hip support 101 moves with the trainer's hip in the movement direction 111 away from the pedal until the lower limb is straightened. During the extension movement, the ankle movement can be coordinated, for example, the ankle shown in Figure 11 performs the plantar flexion movement. Referring to Figure 12 , when the trainer performs the lower limb flexion movement, the hip support 101 moves with the trainer's hip in the movement direction 111 towards the pedal until the lower limb is completely flexed. During the flexion movement, the ankle movement can also be coordinated, for example, the ankle shown in Figure 12 performs the dorsiflexion movement. During the lower limb flexion and extension movement, the hip joint, knee joint and ankle joint of the lower limb work together, which is beneficial for the postoperative rehabilitation of the knee joint and ankle joint.

[0061] The lower limb flexion and extension trainer 100 of the present disclosure has a simple structure, and the sliding rail (main body) can be adjusted to a suitable inclination angle according to the training needs, so as to increase the weight bearing during the lower limb flexion movement by the gravity of the trainer. Moreover, during the exercise, the load on the knee joint can be avoided, which is beneficial for protecting the knee joint.

[0062] The above only describes several embodiments of the present disclosure, and those skilled in the art can make various modifications or changes to the embodiments of the present disclosure according to the disclosed content of the application file without departing from the spirit and scope of the present disclosure.

Claims

1. A lower extremity flexion-extension trainer characterized by, The lower limb flexion and extension training device comprises: a longitudinally extending main body provided with a slide rail; a hip support arranged on the main body and being longitudinally slidably connected to the slide rail; a pedal rotatably coupled to the main body, and the pedal is fixed in a longitudinal position relative to the slide rail; and a tilt adjusting member to which the main body is coupled, and the tilt adjusting member is capable of tilting the slide rail towards the hip support below the pedal. The tilt adjusting member comprises a first bracket, a second bracket and a connecting member, the first bracket and the second bracket are arranged at two ends of the main body respectively, the connecting member is coupled to the first bracket and is movable along a height direction of the first bracket, and the two ends of the main body are hingedly connected to the connecting member and the second bracket respectively.

2. The lower extremity flexion-extension trainer according to claim 1, wherein 3. The lower limb flexion and extension training device according to claim 2, wherein: the first bracket is arranged at one end of the main body close to the pedal, the first bracket is provided with a vertical rod, and the vertical rod is provided with a plurality of height adjusting holes arranged along the height direction; the connecting member is configured to comprise a bracket sleeve and a protrusion arranged outside the bracket sleeve, the protrusion is provided with a shaft hole hingedly connected to the main body, the bracket sleeve is adapted to be sleeved to the vertical rod, and the bracket sleeve is provided with a through hole; the tilt adjusting member further comprises a fixing shaft extending through one of the height adjusting holes and the through hole. The main body is provided with a connecting shaft extending in a transverse direction, the pedal comprises a first plate and a second plate arranged in a plane parallel to each other, the first plate is rotatably connected to the connecting shaft, the second plate is rotatable relative to the first plate in the plane, and the second plate is used for supporting the instep.

4. The lower extremity flexion-extension trainer according to claim 1, wherein 5. The lower limb flexion and extension training device according to claim 4, wherein: a connecting hole is arranged on a side of the first plate away from the second plate, and the connecting shaft extends through the connecting hole to rotatably connect the first plate to the connecting shaft; a support is arranged on a side of the second plate close to the first plate, the first plate is provided with a support hole, and the support extends through the support hole to enable the second plate to be rotatable relative to the first plate in the plane; wherein an angle of rotation of the first plate around the connecting shaft is a first angle, an angle of rotation of the second plate relative to the first plate in the plane is a second angle, and the first angle or the second angle can be selectively locked respectively. The connecting shaft is provided with a limiting portion protruding from an outer periphery of the connecting shaft, and the limiting portion is used for limiting a range of the first angle.

6. The lower extremity flexion-extension trainer of claim 5, wherein, The pedal further comprises a first angle adjusting disc and a first locking shaft; 7. The lower extremity flexion-extension exerciser according to claim 5, wherein the first angle adjusting disc is arranged on a side of the first plate away from the second plate, the connecting hole is arranged on the first angle adjusting disc, the first angle adjusting disc is further provided with a plurality of first angle holes arranged in a circumferential direction, and the main body is provided with a first angle locking hole; when the first angle is locked, the first locking shaft is arranged in parallel with the connecting shaft, and the first locking shaft extends through the first angle hole to the first angle locking hole. The pedal further comprises a second angle adjusting disc and a second locking shaft; 8. The lower extremity flexion-extension exerciser according to claim 5, wherein ​ A second angle adjusting disc is located between the first plate and the second plate and is fixed to the support column, the second angle adjusting disc is provided with a plurality of second angle holes arranged circumferentially, the first plate is provided with a second locking hole; When the second angle is locked, the second locking shaft is arranged in parallel with the support column, and the second locking shaft extends through the second locking hole to the second angle hole.

9. The lower extremity flexion-extension trainer according to any one of claims 2 to 8, wherein, The lower limb flexion and extension trainer further comprises a resistance element, a pulley and a connecting rod, the resistance element is configured to increase resistance during flexion of the lower limb; The connecting rod is fixedly connected to the bottom of the hip support, the pulley is rotatably connected to the connecting rod, and the pulley is arranged on the slide rail so that the hip support is longitudinally slidably connected to the slide rail; The two pedals are arranged on the two sides of the main body respectively.

10. The lower extremity flexion-extension trainer of claim 9, wherein, The resistance element is configured as an elastic rope, the elastic rope is fixed to one of the first support and the second support away from the pedal, and the elastic rope is configured to be connected to the trainer.

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