Lower limb pedaling trainer

Abstract

The utility model discloses a lower limb pedaling trainer which comprises a fixing frame, the fixing frame comprises a first side plate and a second side plate fixedly arranged perpendicular to the first side plate, one or more springs are fixedly arranged on the first side plate, the stretching direction of the springs is in the direction perpendicular to the first side plate, and the free ends of the springs are fixedly connected with pressing plates; a guide rail assembly is arranged between the pressing plate and the second side plate, a locking piece used for limiting sliding of the pressing plate is arranged on the guide rail assembly, the end, away from the second side plate, of the pressing plate is a pressing plate free end, and the pressing plate is made of hard elastomer materials. The lower limb muscle training device can not only train lower limb muscles, but also adjust the pedaling force and train ankle joints, and cannot damage the pressing plate when in use; the lower limb rehabilitation training device is suitable for all scenes where rehabilitation training needs to be carried out on lower limbs and ankle joints.

Description

Technical Field

[0001] The utility model belongs to the field of medical equipment, in particular to a lower limb push-down training device. Background Art

[0002] Orthopedic patients are prone to complications during bed rest, and need to undergo rehabilitation exercises such as lower limb muscle training and joint range of motion training to effectively prevent muscle atrophy, joint stiffness, and lower limb deep vein thrombosis, while improving daily activities and accelerating patient recovery. Therefore, lower limb muscle training and joint range of motion training during bed rest are indispensable in orthopedic rehabilitation.

[0003] The utility model patent with publication number CN213760389U discloses a lower limb trainer on a rehabilitation bed, including a bed body and a shell arranged on the bed body, the shell is provided with threaded rods and sliding rods extending along the length direction of the bed body, a movable seat is slidably provided on the threaded rods and the sliding rods, and a fixed seat is fixedly connected to the movable seat. When in use, both feet are placed on the surface of the fixed seat, and the feet push the fixed seat to move, thereby exercising the lower limb muscles; the threaded rods and the sliding rods are also provided with springs and knobs, threaded seats and sliding seats for adjusting the springs to compress them, and the training intensity is adjusted by adjusting the compression of the springs.

[0004] This structure can complete the downward push training of the lower limbs, but as the name suggests, the threaded rod has an external thread on its surface rather than a smooth surface. When the foot steps on the fixed seat to push the movable seat to slide along the threaded rod, the external thread generates greater resistance and friction on the movable seat. After repeated sliding, the movable seat is easily damaged. In addition, rehabilitation training requires joint training while exercising the lower limb muscles, such as exercising the ankle joint to ensure joint flexibility and functional stability. When the above structure is used, the feet step on the surface of the fixed seat forward and backward to push, and the ankle joint always remains in one state, so the ankle joint cannot be exercised. Utility Model Content

[0005] In order to solve the above deficiencies in the prior art, the utility model aims to provide a lower limb push-down trainer so as to achieve the purpose of preventing the movable seat from being damaged during lower limb training and exercising the ankle joint.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A lower limb push-up trainer comprises a fixed frame, the fixed frame comprises a first side plate and a second side plate fixed perpendicularly to the first side plate, one or more springs are fixedly arranged on the first side plate, the spring expansion and contraction direction is along a direction perpendicular to the first side plate, and the free end of the spring is fixedly connected to a pressure plate; a guide rail assembly is arranged between the pressure plate and the second side plate, and a locking member for limiting the sliding of the pressure plate is arranged on the guide rail assembly, the end of the pressure plate away from the second side plate is the free end of the pressure plate, and the material of the pressure plate is a hard elastomer material.

[0008] As a limitation of the present utility model: a force adjustment component is arranged on the fixed frame, and the force adjustment component includes a rotating part, a moving part and a limiting part;

[0009] The rotating part includes a lead screw, which rotates and penetrates the first side plate, and the length direction of the lead screw is parallel to the expansion and contraction direction of the spring;

[0010] The moving part includes a moving block and an adjusting plate, the moving block is sleeved on the lead screw and is threadedly connected to the lead screw, the adjusting plate is fixed on the moving block, and one end of the spring away from the pressure plate is fixed on the adjusting plate;

[0011] The limiting part includes a positioning rod and a positioning block, the positioning rod is fixedly arranged on the first side plate, the axial direction of the positioning rod is parallel to the axial direction of the lead screw, the positioning block is slidably sleeved on the positioning rod, and the positioning block is fixedly connected to the bottom edge of the adjustment plate;

[0012] In the vertical direction, the height of the positioning rod is greater than the height of the lead screw.

[0013] As a further limitation of the present invention: a driving assembly for rotating the lead screw is disposed at the through end of the lead screw.

[0014] As another limitation of the present invention: the fixed frame also includes a bottom plate, a third side plate and a top plate, the fixed frame is a box-type structure, a side of the fixed frame corresponding to the first side plate is an open end, the third side plate is vertically fixed to the first side plate and parallel to the second side plate, and the distance between the second side plate and the third side plate is greater than the length of the pressure plate.

[0015] As a further limitation of the utility model: a baffle for limiting the pressure plate is arranged at the open end of the fixing frame, the baffle is fixed on the bottom plate, the bottom end of the pressure plate abuts against the inner wall of the baffle; the size between the top end of the baffle and the top plate is larger than the size of the foot.

[0016] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0017] The utility model comprises a fixing frame surrounded by a first side plate and a second side plate, wherein one or more springs are fixedly arranged on the first side plate, and the free ends of the springs are connected to a pressing plate. When the foot is in use, the pressing plate moves toward the first side plate, and the springs are compressed, generating an elastic force in the opposite direction to the foot. Therefore, when the foot is pressed down, the foot needs to press down the pressing plate with force to resist the rebound force of the spring, so as to realize the exercise of the lower limb muscles.

[0018] A guide rail assembly is arranged between the pressing plate and the second side plate, and the guide rail assembly limits the sliding of the pressing plate to prevent the pressing plate from deviating when pedaling hard. In addition, a locking member is arranged on the guide rail assembly. When the guide rail is locked, one end of the pressing plate connected to the guide rail is fixed, but a section away from the guide rail is in a free state. The pressing plate is made of an elastic material. When in use, the heel is extended to the guide rail position, and the heel is used as the rotation center. The instep acts on the pressing plate, and the free end of the pressing plate squeezes the spring to achieve exercise of the ankle joint.

[0019] A force adjustment part is arranged on the fixed frame, including a rotating part, a moving part and a limiting part. The rotating part is a lead screw, and the moving part includes a moving block threadedly mounted on the lead screw, and an adjusting plate fixedly connected to the moving block. When in use, the lead screw is rotated, and the limiting part can limit the moving block and the adjusting plate from rotating with the lead screw. Therefore, under the cooperation of the threads, the moving block and the adjusting plate can only slide along the length direction of the lead screw. After the adjusting plate slides toward the direction close to the pressure plate, the spring is compressed. When the foot pushes down on the pressure plate, greater force is required to achieve the adjustment of the downward force.

[0020] In summary, the utility model can not only exercise the lower limb muscles, but also adjust the downward force and exercise the ankle joints, and will not cause damage to the pressure plate when in use; the utility model is suitable for all scenarios requiring rehabilitation training of the lower limbs and ankle joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0023] Figure 2 It is a front view of an embodiment of the utility model;

[0024] Figure 3 for Figure 2 A magnified schematic diagram of part A;

[0025] Figure 4 It is a schematic diagram of the structure of an embodiment of the utility model at another viewing angle (the top plate is not shown);

[0026] Figure 5 This is a schematic diagram of the structure of the force adjustment component, the spring and the pressure plate in the embodiment of the utility model;

[0027] Figure 6 A top view of an embodiment of the utility model (the top plate is not shown);

[0028] Figure 7 for Figure 6 A magnified schematic diagram of part B;

[0029] Figure 8 This is a schematic diagram of the application structure of the embodiment of the utility model for exercising the ankle joint.

[0030] In the figure: 1-first side plate, 2-second side plate, 3-spring, 4-pressure plate, 5-slider, 6-slide rail, 7-free end of pressure plate, 8-screw, 9-moving block, 10-adjusting plate, 11-positioning rod, 12-positioning block, 13-hand wheel, 14-bottom plate, 15-third side plate, 16-top plate, 17-baffle, 18-opening end. DETAILED DESCRIPTION

[0031] The preferred embodiment of the utility model is described below in conjunction with the accompanying drawings. It should be understood that the lower limb push-down training device described here is a preferred embodiment, which is only used to illustrate and explain the utility model and does not constitute a limitation of the utility model.

[0032] The directional terms or positional relationships such as "front", "rear", "left", and "right" described in the embodiments are based on the drawings in the specification of the utility model. Figure 1 The orientation relationship is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the content protected by the present invention.

[0033] like Figures 1 to 8 As shown, this embodiment includes a fixing frame, on which a spring 3 is fixed, and the free end of the spring 3 is connected to a pressing plate 4. The foot acts on the pressing plate 4 to push the pressing plate 4 backward, which can exercise the lower limbs; a force adjustment component is provided on the fixing frame to adjust the telescopic state of the spring 3. When the spring 3 is compressed, if you want to push the pressing plate 4 backward, you need a greater force, which can achieve the adjustment of the downward force; a guide rail component is provided between the pressing plate 4 and the fixing frame to ensure the sliding track of the pressing plate 4, and one end of the pressing plate 4 can also be fixed by a locking member, and the instep acts on the free end 7 of the pressing plate to exercise the ankle joint.

[0034] The downward push and backward push mentioned in this embodiment have the same meaning, and both refer to the force applied by the foot to make the pressure plate 4 slide backward.

[0035] like Figure 1 , Figure 4As shown, the fixing frame is a box-type structure, including a bottom plate 14, a first side plate 1, a second side plate 2, a third side plate 15 and a top plate 16. The side of the fixing frame corresponding to the first side plate 1 is an open end 18, which is used for the foot to extend into and act on the pressing plate 4; the third side plate 15 is fixed vertically to the first side plate 1, the second side plate 2 is fixed vertically to the first side plate 1, and the third side plate 15 is parallel to the second side plate 2. The box-type structure has the functions of dustproof and beautiful appearance.

[0036] The box body is provided with a force adjustment component, a spring 3 and a pressure plate 4, and a guide rail component;

[0037] 1. Strength adjustment component;

[0038] The force adjustment component includes a rotating part, a moving part and a limiting part;

[0039] like Figure 4 , Figure 5 As shown, the rotating part includes a screw 8, which passes through the first side plate 1 and is rotatably connected to the first side plate 1. The length direction of the screw 8 is parallel to the expansion and contraction direction of the spring 3. Figure 4 , Figure 5 , Figure 6 The external threads on the middle lead screw 8 are not drawn;

[0040] The moving part includes a moving block 9 and an adjusting plate 10. The moving block 9 is sleeved on the lead screw 8 and is threadedly connected to the lead screw 8. The adjusting plate 10 is fixed on the moving block 9. The adjusting plate 10 is a flat plate structure. One end of the spring 3 away from the pressure plate 4 is fixed on the adjusting plate 10.

[0041] The limiting part includes a positioning rod 11 and a positioning block 12. The end of the positioning rod 11 is fixedly mounted on the first side plate 1. The axial direction of the positioning rod 11 is parallel to the axial direction of the lead screw 8. The positioning block 12 is slidably mounted on the positioning rod 11. The positioning block 12 is fixedly connected to the bottom edge of the adjustment plate 10. In this embodiment, there are two groups of limiting parts, one group is arranged on each side of the lead screw.

[0042] In the vertical direction, the height of the positioning rod 11 is greater than that of the lead screw 8, and the positioning rod 11 contacts the bottom end of the pressing plate 4 to support the pressing plate 4. There is no contact between the lead screw 8 and the pressing plate 4, and when the pressing plate 4 is pressed down, the external thread on the lead screw 8 will not wear the pressing plate 4.

[0043] The through end of the screw 8 is provided with a driving assembly for rotating it. In this embodiment, the driving assembly adopts a handwheel 13, which can also be replaced by a motor drive; by turning the handwheel 13, the screw 8 rotates, and the moving block 9 and the adjusting plate 10 tend to rotate with the screw 8. However, since the limiting part limits the rotation of the moving block 9 and the adjusting plate 10, the moving block 9 and the adjusting plate 10 can only slide forward and backward along the screw 8 under the action of the thread. When the adjusting plate 10 slides forward, the pressing plate 4 cannot move forward because the foot is against the pressing plate 4. Therefore, the spring 3 is always in a compressed state. When the foot pushes the pressing plate 4 backward, a greater force needs to be applied, thereby realizing different strength training of the lower limb muscles in a lying or sitting state.

[0044] 2. Spring 3 and pressure plate 4;

[0045] like Figure 5 As shown, in this embodiment, one end of the spring 3 is fixed on the adjustment plate 10, and the spring 3 is extended and retracted in a direction perpendicular to the first side plate 1, that is, in the forward and backward directions. The pressing plate 4 is fixedly connected to the free end of the spring 3, where the free end refers to the end of the spring 3 away from the adjustment plate 10. In this embodiment, the number of springs 3 is set to four, and the number can be set to one, two or other numbers according to needs.

[0046] 3. Guide rail assembly;

[0047] like Figure 2 , Figure 3 As shown, a guide rail assembly is provided between the pressure plate 4 and the second side plate 2, and the guide rail assembly includes a slide rail 6 and a slider 5. The slide rail 6 is in an inverted "T" shape and is fixedly provided on the second side plate 2. The slider 5 is provided with a groove for the boss of the "T"-shaped slide rail 6 to be embedded, and the right end of the pressure plate 4 is fixedly connected to the slider 5. The guide rail assembly has two functions. The first function is that when the pressure plate 4 slides forward and backward, the guide rail assembly plays a limiting role, which can make the pressure plate 4 always slide in a straight line to prevent the pressure plate 4 from deviating when the foot exerts force on the pedal; the second function is to act as a fixed fulcrum. The guide rail assembly is provided with a locking member for limiting the sliding of the pressure plate 4. In this embodiment, the locking member is a bolt. When the pressure plate 4 does not need to slide, the locking block can be used to limit the sliding of the slider 5. It should be noted that the locking member is Figure 2 , Figure 3 Since the left end of the pressing plate 4 is the free end 7 of the pressing plate, and the pressing plate 4 in this embodiment is a hard rubber plate, it can also be made of other hard elastic materials, such as polyurethane materials, as long as the hardness is relatively high and can produce slight elastic deformation, when the right end of the pressing plate 4 is fixed, the side of the ankle is attached to the right end of the pressing plate 4, and the instep is attached to the free end 7 of the pressing plate, with the ankle position (or heel) as the rotation center, see Figure 8By applying force to the pressure plate 4 through the surface of the foot, the pressure plate 4 undergoes a slight elastic deformation, and the free end 7 of the pressure plate swings backward, which has the effect of exercising the ankle joint. Therefore, in this embodiment, the distance between the second side plate 2 and the third side plate 15 is greater than the length of the pressure plate 4, ensuring that the free end 7 of the pressure plate is not in contact with the third side plate 15, so that the free end 7 of the pressure plate can rotate flexibly.

[0048] It should be noted that most patients after surgery need to rest in bed, and rehabilitation training is only to prevent muscle atrophy due to long-term inactivity. Therefore, the intensity of rehabilitation training is relatively low, and there is no need for large-scale and high-intensity exercise, otherwise it may lead to slower wound healing and increase the patient's recovery period. Figure 8 The instep squeezes the pressure plate 4, causing it to deform slightly, then releases it, and continues squeezing it, repeating this process to exercise the flexibility of the ankle joint. The pressure plate 4 also has a high hardness. When both feet step on the pressure plate 4, the pressure plate 4 squeezes the spring 3 and slides backward. If the pressure plate 4 is too soft, it cannot squeeze the spring 3.

[0049] In order to improve this embodiment, a baffle 17 is provided at the open end 18 of the fixing frame. Figure 2 As shown, the baffle 17 is fixed on the bottom plate 14, and the bottom end of the pressing plate 4 abuts against the inner wall of the baffle 17, that is, the upper edge of the baffle 17 is higher than the lower edge of the pressing plate 4. When the adjustment plate 10 is adjusted, there is no need to step on the pressing plate 4, and the baffle 17 can also ensure that the pressing plate 4 will not extend from the opening end 18, which is used to limit the pressing plate 4. The size between the top of the baffle 17 and the top plate 16 is larger than the size of the foot, so that the foot can extend into the opening end 18 and then step on the pressing plate 4.

[0050] It should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiment, those skilled in the art can still modify the technical solutions recorded in the above embodiment or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A lower limb push-down training device, characterized in that: It includes a fixing frame, which includes a first side plate and a second side plate fixed perpendicularly to the first side plate. One or more springs are fixedly arranged on the first side plate. The spring expansion and contraction direction is along a direction perpendicular to the first side plate. The free end of the spring is fixedly connected with a pressure plate. A guide rail assembly is arranged between the pressure plate and the second side plate. A locking member for limiting the sliding of the pressure plate is arranged on the guide rail assembly. The end of the pressure plate away from the second side plate is the free end of the pressure plate. The material of the pressure plate is a hard elastomer material.

2. A lower limb push-down training device according to claim 1, characterized in that: The fixed frame is provided with a force adjustment component, which includes a rotating part, a moving part and a limiting part; The rotating part includes a lead screw, which rotates and penetrates the first side plate, and the length direction of the lead screw is parallel to the expansion and contraction direction of the spring; The moving part includes a moving block and an adjusting plate, the moving block is sleeved on the lead screw and is threadedly connected to the lead screw, the adjusting plate is fixed on the moving block, and one end of the spring away from the pressure plate is fixed on the adjusting plate; The limiting part includes a positioning rod and a positioning block, the positioning rod is fixedly arranged on the first side plate, the axial direction of the positioning rod is parallel to the axial direction of the lead screw, the positioning block is slidably sleeved on the positioning rod, and the positioning block is fixedly connected to the bottom edge of the adjustment plate; In the vertical direction, the height of the positioning rod is greater than the height of the lead screw.

3. A lower limb push-down training device according to claim 2, characterized in that: The through end of the lead screw is provided with a driving assembly for rotating the lead screw.

4. A lower limb push-down training device according to any one of claims 1 to 3, characterized in that: The fixing frame also includes a bottom plate, a third side plate and a top plate. The fixing frame is a box-type structure. The side of the fixing frame corresponding to the first side plate is an open end. The third side plate is vertically fixed to the first side plate and parallel to the second side plate. The distance between the second side plate and the third side plate is greater than the length of the pressure plate.

5. A lower limb push-down training device according to claim 4, characterized in that: A baffle plate for limiting the pressure plate is arranged at the open end of the fixing frame. The baffle plate is fixed on the bottom plate, and the bottom end of the pressure plate abuts against the inner wall of the baffle plate. The size between the top end of the baffle plate and the top plate is larger than the size of the foot.

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