Lower limb exercise apparatus using lifting motion

Abstract

The present invention relates to a lower limb exercise apparatus, and more particularly, to a lower limb exercise apparatus using a lifting action, which can exercise by moving a pedal inclined to the ground while a user sits on a chair, and which is provided with a weight coupling rod on a moving seat on which the pedal is provided. According to the present invention, the exercise intensity can be adjusted by adjusting the weight of a moving object carried on the moving seat, and the used muscle part can be exercised differently by adjusting the lifting guide rod, which is the moving path of the moving seat, within a prescribed range by the rotation angle adjusting part.

Description

Technical Field

[0001] The present invention relates to a lower limb exercise apparatus, and more particularly, to a lower limb exercise apparatus using a lifting motion, which can exercise while sitting on a chair by moving a footrest inclined to the ground. A weight coupling rod is provided on the moving seat where the footrest is provided, and the exercise intensity can be adjusted by adjusting the weight of the moving object carried on the moving seat. Moreover, the lifting guide rod, which is the moving path of the moving seat, can be adjusted within a specified range by a rotation angle adjustment unit, so that different muscle parts used can be exercised. Background Art

[0002] Generally, an exercise for the lower limbs is squats. Squats are the most basic exercise for the lower limbs by repeatedly sitting down and standing up until the thighs are level with the knees. However, such squats may put pressure on the knees and cause uneven exercise of the gluteus maximus, gluteus medius, and gluteus minimus that make up the gluteal muscles.

[0003] The present invention relates to a lower limb exercise apparatus that exercises the lower limbs by repeatedly pushing up and down a footrest while sitting on a chair. Among related conventional lower limb exercise apparatuses, there is a lower limb muscle strengthening exercise apparatus mentioned in Patent No. 10-1044094.

[0004] The patent proposes a lower limb muscle strengthening exercise apparatus, including: (a) a bottom 1, which includes an "H"-shaped support frame 1a, a pair of handles 1b coupled to the ends of the support frame 1a, and a pair of first rings 1c formed on the upper part of the support frame 1a; (b) a connection part 2, which includes a pair of brackets (brak et) 2a in the shape of coupled to the upper part of the support frame 1a and a pair of rollers 2b coupled to the inside of each of the pair of brackets 2a; (c) a rotation part 3, inserted and coupled to the inside of the bracket 2a, including a pair of second rings 3b; and (d) a spring member 4, which includes a pair of springs 4a connecting the two ends to the first ring 1c and the second ring 3b and a housing 4b wrapping the springs 4a. This apparatus does not move by the action of stretching and retracting the legs, but moves in the walking direction, so it is difficult to expect the same exercise effect as the squat action.

[0005] Another existing technology related to lower limb exercise is the safe squat exercise apparatus proposed in Patent No. 10-1875338.

[0006] The patent proposes a safe squatting exercise device for protecting the knee joints, which comprises: a ground supporting frame having a foot pedal for placing the user's feet, supported on the ground, a vertical component vertically erected from the ground supporting frame, and a buttocks placing component for placing the user's buttocks when the user performs a squatting exercise. The safe squatting exercise device for protecting the knee joints is characterized in that it comprises: a pair of left and right ankle fixing frames, arranged at the upper part of the foot pedal, supporting the instep of the user, a vertical component vertically erected from the ground supporting frame, and a pair of left and right popliteal fossa placing components, arranged at the upper end of the vertical component, for placing the user's popliteal fossa. When the user performs a squatting exercise, an elastic force is arranged between the popliteal fossa placing component and the buttocks placing component in order to give elastic force to the thigh. The user places his feet on the foot pedal and inserts the ankle fixing frame to fix the ankle, then places the buttocks on the buttocks placing component, places the user's popliteal fossa on the popliteal fossa placing component, and then lowers the buttocks as if sitting on a chair until the knees and thighs form a right angle. When lowering the buttocks, the buttocks placing component moves from the buttocks to the thighs, and after being placed on the thighs, force is repeatedly applied to the thighs to slowly stand up, thereby achieving a squatting exercise without a handle. However, a plurality of protrusions formed on the buttocks placing component can stimulate the buttocks and thighs of the user in exercise. Since force is applied while sitting down, the exercise intensity on the thighs is reduced, and pressure may be placed on the waist as the exercise time passes.

[0007] Another prior art related to a device for exercising by pushing open the foot pedals while sitting on a chair is an exercise device for exercising lower limbs disclosed in Patent Publication No. 10-2022-0000325.

[0008] The patent proposes a sports equipment for lower limb training, which is characterized in that it includes: a guide rod 100, which is arranged to be tilted downward toward the front, a moving body 200, which moves along the guide rod 100 and rests against the user's buttocks and back, etc., a foot pedal 300, which is arranged in front of the guide rod 100 and is tilted upward toward the front to support the user's feet. The moving body 200 is subjected to the elastic force toward the upper rear side through the elastic component 400 arranged side by side with the guide rod 100. Since the elastic force of the elastic component 400 can adjust the amount of exercise, relatively heavy weights are required to perform further high-intensity exercise. A large amount of weight may cause the user's feet to leave the foot pedal and produce a large impact on the user's ankle when it contacts it again, increasing the risk of injury.

[0009] Prior art literature

[0010] Patent Literature

[0011] (Patent Document 0001) Korean Patent Gazette for Granted Patent No. 10-1044094 (Announced on June 23, 2011)

[0012] (Patent Document 0002) Korean Patent Gazette for Granted Patent No. 10-1875338 (Announced on July 5, 2018)

[0013] (Patent Document 0003) Korean Patent Gazette for Published Patent No. 10-2022-0000325 (Published on January 3, 2022) Summary of the Invention

[0014] Technical Problem to be Solved by the Invention

[0015] Therefore, the object of the present invention is to provide a lower limb exercise apparatus using a lifting motion. In a state of sitting on a chair, exercise is performed by moving a footrest that can be moved in a state inclined to the ground. A weight coupling rod is provided on the moving seat where the footrest is provided to adjust the weight of the moving object carried on the moving seat, thereby adjusting the exercise intensity. The lifting guide rod, which is the moving path of the moving seat, is adjusted within a specified range through a rotation angle adjustment unit, so that different muscle parts used can be exercised.

[0016] Moreover, another object of the present invention is to provide a lower limb exercise apparatus using a lifting motion. The footrest is coupled to the moving seat through a hinge and a link is provided, thereby reducing the impact when the user's foot contacts the footrest, reducing the impact applied to the user's ankle, and preventing injury.

[0017] Furthermore, another object of the present invention is to provide a lower limb exercise apparatus using a lifting motion. The rotation angle adjustment unit adjusts the rotation angle through the relative movement of hydraulic oil in a hydraulic pump and a hydraulic cylinder filled with hydraulic oil, and the operation of the hydraulic pump can be manually adjusted. Therefore, no additional power source such as power is required.

[0018] Still further, another object of the present invention is to provide a lower limb exercise apparatus using a lifting motion. The chair on which the user sits for exercise can move along a guide frame fixedly provided on a placement frame, thereby adjusting the distance from the footrest and enabling exercise according to the body types of various users.

[0019] Technical Solution for Solving the Problem

[0020] The lower limb exercise apparatus using a lifting motion of the present invention is for lower limb exercise and is characterized by including: a base frame provided on the ground, an inclined frame fixedly provided on the base frame through a rotary hinge, a lifting guide rod fixedly provided on the inclined frame, a position adjustment guide rod fixedly provided on the inclined frame, a lifting operation part moving along the lifting guide rod, a placement frame provided on one side of the base frame, a chair fixedly provided on one side of the placement frame, and the lifting operation part rises along the lifting guide rod by the external force applied by the user and descends by its own weight when the external force decreases.

[0021] Effects of the invention

[0022] The lower limb exercise apparatus using a lifting motion of the present invention performs exercise by moving a footrest that can move in a state inclined to the ground while sitting on the chair. A heavy object coupling rod is provided on the moving seat where the footrest is provided to adjust the weight of the moving object carried on the moving seat, thereby adjusting the exercise intensity. The lifting guide rod, which is the moving path of the moving seat, is adjusted within a specified range by a rotation angle adjustment part, so that there is a remarkable effect of being able to exercise different muscle parts. And it has the following remarkable effects: the footrest is hinge-coupled to the moving seat and a link is provided, thereby reducing the impact when the user's foot touches the footrest, reducing the impact applied to the user's ankle, and preventing injury. The rotation angle adjustment part adjusts the rotation angle by the relative movement of the hydraulic oil in a hydraulic pump and a hydraulic cylinder filled with hydraulic oil, and the operation of the hydraulic pump can be manually adjusted. Therefore, no additional power source such as power is required. The chair on which the user sits can move along a guide frame fixedly provided on the placement frame, thereby adjusting the distance from the footrest and enabling exercise according to the body types of various users. Description of the drawings

[0023] Figure 1 It is a three-dimensional view of the overall structure of the present invention.

[0024] Figure 2 It is a three-dimensional view of the overall structure of the present invention seen from another angle.

[0025] Figure 3 It is a side structure view of the present invention.

[0026] Figure 4 It is a plan structure view of the present invention.

[0027] Figure 5 It is a partial structure view of the present invention.

[0028] Explanation of reference numerals

[0029] 1. Base frame 2. Inclined frame

[0030] 3. Lifting guide rod 4. Position adjustment guide rod

[0031] 5. Rotating hinge 6. Heavy object storage rod

[0032] 7. Hanging rack 8. Hanging rack

[0033] 10. Lifting operation part

[0034] 11. Movable seat 12. Footrest

[0035] 13. Guide pile 14. Guide bracket

[0036] 15. Position fixing pin 16. Heavy object coupling rod

[0037] 17. First hinge 18. First link

[0038] 19. Second hinge 20. Shock absorption link

[0039] 21. Third hinge 22. Rotation stop rod

[0040] 30. Rotation angle adjustment part

[0041] 31. Hydraulic pump 32. Hydraulic cylinder

[0042] 33. Piston rod 34. Pump rod

[0043] 35. Pump operation pipe 36. Operation rod

[0044] 37. Storage pipe 38. Valve

[0045] 40. Placing frame 41. Chair

[0046] 42. Guide frame 43. Position fixing frame

[0047] 44. Guide frame 45. Rotation position fixing pin

[0048] 46. Handle 47. Grip Detailed implementation mode

[0049] The present invention relates to a lower limb exercise apparatus, and more particularly, to a lower limb exercise apparatus using a lifting motion, which can move a footrest inclined to the ground while sitting on a chair, and a heavy object coupling rod is provided on a movable seat provided with the footrest, and the exercise intensity can be adjusted by adjusting the weight of a movable object carried on the movable seat, and the lifting guide rod, which is the movement path of the movable seat, can be adjusted within a specified range by a rotation angle adjustment part, so that different muscle parts used can be exercised.

[0050] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

[0051] Figure 1 is a three-dimensional view of the overall structure of the present invention, Figure 2 is a three-dimensional view of the overall structure of the present invention from another angle, Figure 3 is a side structure view of the present invention, Figure 4 is a planar structure view of the present invention. A lower limb exercise apparatus using a lifting motion for lower limb exercise, characterized in that it includes: a base frame 1 provided on the ground, an inclined frame 2 fixedly provided on the base frame 1 so as to be rotatable within a specified range through a rotary hinge 5, a lifting guide rod 3 fixedly provided on the inclined frame 2, a position adjustment guide rod 4 fixedly provided on the inclined frame 2, a lifting operation unit 10 moving along the lifting guide rod 3, a placement frame 40 provided on one side of the base frame 1, and a chair 41 fixedly provided on one side of the placement frame 40. The lifting operation unit 10 rises along the lifting guide rod 3 by means of an external force applied by the user and descends by means of its own weight when the external force decreases.

[0052] First, the base frame 1 is a basic frame provided on the ground. The inclined frame 2 is fixedly provided on the base frame 1 through a rotary hinge 5 and is an inclined frame that can rotate within a specified angle range with the rotary hinge 5 as the center. The lifting guide rod 3 is a cylindrical frame fixedly provided on the inclined frame 2 for guiding the movement path of the moving seat 11. The position adjustment guide rod 4 is provided based on Figure 4 a frame provided at the central part of the inclined frames 2 provided on the left and right sides. The lifting operation unit 10 is a structure that rises and falls along the lifting guide rod 3 in a state inclined to the ground. The placement frame 40 is a frame provided on one side of the base frame 1 and can be set to be integrated with the base frame 1 or separately configured. The chair 41 is fixedly provided on one side of the placement frame 40 for the user to sit and exercise. The lifting operation unit 10 rises along the lifting guide rod 3 by means of an external force applied by the user and is a structure that descends by means of its own weight when the external force applied to the footrest is reduced.

[0053] Therefore, if the user extends the foot and applies a force to the footrest 12 while sitting on the chair, the lifting operation unit 10 rises along the lifting guide rod 3. Then, if the force applied to the footrest 12 is reduced, the entire lifting operation unit 10 descends along the lifting guide rod 3 due to the load of the lifting operation unit 10 itself, and thus this action is repeated, enabling the user to perform lower limb exercise.

[0054] Also, the tilt frame 2 can adjust the rotation angle around the rotation hinge by means of a rotation angle adjustment part 30 provided on one side of the base frame 1. The rotation angle adjustment part 30 includes: a hydraulic pump 31 filled with hydraulic oil, a hydraulic cylinder 32 fixedly arranged on one side of the position adjustment guide rod 4 and filled with hydraulic oil, the piston rod 33 extends or compresses through the operation of the hydraulic pump 31, a pump rod 34 for delivering the hydraulic oil of the hydraulic pump 31 to the hydraulic cylinder 32, a pump operation pipe 35 fixedly coupled to one end of the pump rod 34, and an operation rod 36 that can be inserted into the pump operation pipe 35. After inserting the operation rod 36 into the pump operation pipe 35, if the pump rod 34 is pumped, the hydraulic oil in the hydraulic pump 31 moves to the hydraulic cylinder 32, the piston rod 33 of the hydraulic cylinder 32 extends out of the hydraulic cylinder 32, and the positions of the position adjustment guide rod 4, the tilt frame 2 and the lifting guide rod 3 rotate in a direction away from the base frame 1.

[0055] That is, the tilt frame 2 can rotate within a specified range around the rotation hinge 5 by means of the rotation angle adjustment part 30. This rotation angle adjustment of the tilt frame 2 can adjust the intensity of the supporting force required during the lifting or lowering of the lifting operation part 10, and ultimately adjust the exercise intensity. The hydraulic pump 31 is a pump that can discharge the internally filled hydraulic oil to the outside through the operation of the user. The hydraulic cylinder 32 is fixedly arranged on one side of the position adjustment guide rod 4. If the hydraulic oil inside the hydraulic pump 31 flows into the hydraulic cylinder 32, the piston rod 33 extends, and the position adjustment guide rod 4 rotates upward. The pump rod 34 is a rod that performs mechanical movement to deliver the hydraulic oil inside the hydraulic pump 31 to the hydraulic cylinder 32. The pump operation pipe 35 is a pipe fixedly arranged at one end of the pump rod 34. The operation rod 36 can be attached to and detached from the pump operation pipe 35, and it is a rod for operating the pump rod 34.

[0056] Therefore, taking Figure 1 as a reference, if you want to increase the exercise intensity by rotating the position adjustment guide rod 4 counterclockwise, you need to take out the operation rod 36 from the storage pipe 37, insert it into the pump operation pipe 35, and then operate the operation rod 36 like a conventional manual well pump. The hydraulic oil inside the hydraulic pump 31 is moved to the hydraulic cylinder 32 through the pump rod 34, the piston rod 33 extends, and thus the position adjustment guide rod 4 rotates counterclockwise, increasing the exercise intensity.

[0057] On the contrary, if you want to reduce the exercise intensity, you should check taking Figure 1The structure and operation of rotating the position adjustment guide rod 4 in the clockwise direction based on [a certain reference]. A valve 38 is provided on one side of the hydraulic pump 31 to move the hydraulic oil inside the hydraulic pump 31 and the hydraulic cylinder 32. If the valve 38 is opened, the hydraulic oil inside the hydraulic cylinder 32 moves towards the hydraulic pump 31 by virtue of the load of the lifting operation part 10 and the tilting frame 2, compressing the piston rod 33 of the hydraulic cylinder 32 along the direction into the interior of the hydraulic cylinder 32, and causing the positions of the position adjustment guide rod 4, the tilting frame 2, and the lifting guide rod 3 to rotate towards the direction close to the base frame 1.

[0058] That is, the valve 38 is a structure provided on one side of the hydraulic pump 31 that can open and close the flow of hydraulic oil between the hydraulic pump 31 and the hydraulic cylinder 32. When the piston rod 33 of the hydraulic cylinder 32 is in the extended state, if the valve 38 is opened, then by virtue of the load of the lifting operation part 10 represented by the tilting frame 2, the hydraulic oil inside the hydraulic cylinder 32 flows back to the hydraulic pump 31, thereby compressing the piston rod 33 of the hydraulic cylinder 32, and Figure 1 rotating the position adjustment guide rod 4 in the clockwise direction based on [a certain reference], ultimately reducing the exercise intensity.

[0059] Moreover, the lifting operation part 10 includes: a moving seat 11 that moves along the lifting guide rod 3, and a foot pedal 12 that is fixedly provided on the moving seat 11 and moves by virtue of the external force of the user. The foot pedal 12 can be adjusted and fixed along the position adjustment guide rod 4 through a foot pedal position adjustment part fixedly provided on the position adjustment guide rod 4. The foot pedal position adjustment part includes: a guide post 13 that is fixedly provided on the position adjustment guide rod 4 and forms a plurality of through holes, a guide bracket 14 that is arranged in a form surrounding the outside of the guide post 13 and forms a through hole, a position fixing pin 15 that is fixedly provided on the guide bracket 14, and a spring that applies a force to pull the position fixing pin 15 towards the guide bracket 14. If an external force is applied to pull the position fixing pin 15 out of the through hole of the guide post 13, the position of the guide bracket 14 can be adjusted along the length direction of the guide post 13, and the position of the foot pedal 12 can be adjusted along the length direction of the position adjustment guide rod 4.

[0060] The movable seat 11 is a seat (saddle) that moves up and down along the lifting guide rod 3. A footrest 12 that contacts the user's feet and moves up and down by an external force is provided on the movable seat 11. The footrest position adjusting part is fixedly provided on one side of the position adjusting guide rod 4 and can adjust the position of the footrest along the length direction of the position adjusting guide rod 4. The guide post 13 is a square tube fixedly provided on the position adjusting guide rod 4 and having a plurality of through holes formed therein. The guide bracket 14 is provided in a form surrounding a part of the outer peripheral surface of the guide post 13 and can move along the length direction of the guide post 13. The position fixing pin 15 is a fixing pin fixedly provided on the guide bracket 14 and can be partially inserted into the through hole of the guide post 13. The spring (not shown) is provided between the position fixing pin 15 and the guide bracket 14 and applies a pulling force to pull the position fixing pin 15 towards the center of the guide post 13 through its own elasticity.

[0061] Therefore, in order to adjust the position of the footrest 12, a force is applied in the direction of pulling out the position fixing pin 15 from the through hole of the guide post 13, that is, in the direction of compressing the spring. After pulling out from the through hole of the guide post 13, the guide bracket 14 is moved along the length direction of the guide post 13. Then, the force compressing the spring is removed, and the position fixing pin 15 enters a specific through hole of the guide post 13, so that the position of the footrest 12, that is, the position of the movable seat 11, can be fixed in the adjusted state. Finally, by changing the relative distance between the chair 41 and the footrest 12, it can be aligned with the user's body.

[0062] Figure 5 This is a partial structural diagram of the present invention. The lifting operation part 10 includes: a movable seat 11 that moves along the lifting guide rod 3, and a footrest 12 that is fixedly provided on the movable seat 11 and moves by the external force of the user. The footrest 12 is fixedly coupled to the movable seat 11 through a first hinge 17 so as to be able to rotate within a specified range with the first hinge 17 as the center. A first link 18 is fixedly provided on one side of the footrest 12. One side of the first link 18 is coupled to a shock absorption link 20 through a second hinge 19. The shock absorption link 20 is fixedly coupled to the position adjusting guide rod 4 through a third hinge 21. If an external force is applied to the footrest 12, the footrest 12 can rotate within a specified angle with the first hinge 17 as the center. When the footrest 12 descends and impacts the user's feet, the impact applied to the user's feet can be reduced through the operation of the shock absorption link 20.

[0063] The movable seat 11 and the footrest 12 are structures that serve the functions described above. The footrest 12 is fixedly coupled to the movable seat 11 through a first hinge 17 so as to be rotatable within a specified range about the first hinge 17. The first link 18 is a link fixedly coupled to one side of the footrest. The shock-absorbing link 20 is coupled to one side of the first link 18 through a second hinge 19, and the shock-absorbing link 20 is fixedly coupled to the position adjustment guide rod 4 through a third hinge 21.

[0064] Therefore, when a user applies an external force to the footrest 12 for exercise, the footrest 12 instantaneously rotates by a specified angle about the first hinge 17, and by virtue of the self-load of the first link 18 and the shock-absorbing link 20, it returns to its original state, thereby reducing the instantaneous impact applied to the user's foot or ankle and preventing injuries caused by excessive exercise of the user. Even if the footrest 12 descends and collides with the user's foot, it can prevent a sharp impact from being applied to the user's foot through the operation of the first link 18 and the shock-absorbing link 20.

[0065] Moreover, the chair 41 can move along a guide frame 42 fixedly provided on the placement frame 40, so that the distance from the footrest 12 can be adjusted. The rotational position can be adjusted through an angle adjustment portion provided on one side of the placement frame 40. The angle adjustment portion includes: an arcuate position fixing frame 43 fixedly provided on the chair 41 and forming a plurality of through holes 43a; a guide frame 44 provided on one side of the position fixing frame 43 to guide the rotational path of the position fixing frame and forming a long hole; and a rotational position fixing pin 45 inserted into the through holes 43a to be able to fix the rotational position of the position fixing frame 43.

[0066] That is, the position of the chair 41 can also be adjusted like the footrest 12. The chair 41 can move along the length direction along the guide frame 42 fixedly provided on the placement frame 40. After moving, the position of the footrest 12 can be fixed through a handle 47. The angle adjustment portion can guide different users to exercise in the most suitable posture by adjusting the rotational position of the chair 41. The position fixing frame 43 is an arcuate frame forming a plurality of through holes. The guide frame 44 is a frame guiding the moving path of the position fixing frame 43. The rotational position fixing pin 45 is a fixing pin that can be inserted into the through holes 43a of the position fixing frame 43 to fix the rotational position of the chair 41.

[0067] A spring can also be provided on one side of the rotational position fixing pin 45. After the rotational position of the chair 41 is adjusted by the user's operation, it is inserted into a specific through hole of the position fixing frame 43 to fix the rotational position of the chair 41.

[0068] The unillustrated reference numerals are the heavy object storage rod 6, the heavy object coupling rod 16, the belt hanger 7, another belt hanger 8, and the rotation stop rod 22. The heavy object storage rod 6 is a structure for storing disc-shaped heavy objects and has nothing to do with the exercise intensity. The heavy object coupling rod 16 is a structure for fastening the heavy object and adjusting the overall weight of the lifting operation unit 10. The belt hanger 7 is a belt hanger fixedly provided on the inclined frame 2. The belt hanger 8 is a belt hanger fixedly provided on the movable seat 11. It is a structure for hanging a belt between the two belt hangers, which can reduce the force required for the user to push up the lifting operation unit 10. The rotation stop rod 22 is a structure for stopping the movement of the lifting operation unit 10. A limiter is provided on one side of the rotation stop rod 22. After rotating the rotation stop rod 22 in a specific direction to move, and then when stopping the movement, rotate the rotation stop rod 22 in the direction opposite to the specific direction to keep the lifting operation unit 10 in a non-moving state.

[0069] Finally, the lower limb exercise apparatus using the lifting action of the present invention moves by moving the footrest that can move in a state inclined to the ground while sitting on a chair. A heavy object coupling rod is provided on the movable seat where the footrest is provided to adjust the weight of the moving object carried on the movable seat, so that the exercise intensity can be adjusted. The lifting guide rod, which is the moving path of the movable seat, is adjusted within a specified range by the rotation angle adjustment unit, so that there is a remarkable effect of being able to exercise different muscle parts used, and there are the following remarkable effects: The footrest is hinge-coupled to the movable seat and a link is provided, so as to reduce the impact when the user's foot touches the footrest, reduce the impact applied to the user's ankle, and prevent injury. The rotation angle adjustment unit adjusts the rotation angle through the relative movement of the hydraulic oil in the hydraulic pump and the hydraulic cylinder filled with hydraulic oil, and the operation of the hydraulic pump can be manually adjusted. Therefore, no additional power source such as power is required. The chair on which the user sits and exercises can move along the guide frame fixedly provided on the placement frame, so that the distance from the footrest can be adjusted, and exercises can be carried out according to the body types of various users.

Claims

1. A lower limb exercise device utilizing a lifting action, which is used for lower limb exercise, characterized in that: include: A base frame (1) is arranged on the ground. The tilting frame (2) is fixedly mounted on the base frame (1) so as to be able to rotate within a specified range via a rotating hinge (5). A lifting guide rod (3) is fixedly arranged on the tilting frame (2). A position adjustment guide rod (4) is fixedly arranged on the tilting frame (2). The lifting operation part (10) moves along the lifting guide rod (3). A placement frame (40) is arranged on one side of the base frame (1), A chair (41) is fixedly arranged on one side of the placement frame (40), The lifting operation part (10) rises along the lifting guide rod (3) with the help of an external force applied by a user, and descends with the help of its own weight when the external force decreases.

2. The lower limb exercise device using lifting action according to claim 1, characterized in that: The tilting frame (2) can adjust the rotation angle with the rotation hinge as the center through a rotation angle adjustment part (30) arranged on one side of the base frame (1). The rotation angle adjustment unit (30) comprises: Hydraulic pump (31), with built-in hydraulic oil, The hydraulic cylinder (32) is fixedly arranged on one side of the position adjustment guide rod (4) and contains hydraulic oil. The hydraulic cylinder (32) extends or compresses the piston rod (33) through the operation of the hydraulic pump (31). A pump rod (34) is used to deliver the hydraulic oil of the hydraulic pump (31) to the hydraulic cylinder (32). A pump operating tube (35) is fixedly coupled to one end of the pump rod (34). An operating rod (36) can be inserted into the pump operating tube (35). After the operating rod (36) is inserted into the pump operating pipe (35), if the pump rod (34) is pumped, the hydraulic oil in the hydraulic pump (31) moves to the hydraulic cylinder (32), and the piston rod (33) of the hydraulic cylinder (32) is extended to the outside of the hydraulic cylinder (32), so that the position adjustment guide rod (4), the tilt frame (2) and the lifting guide rod (3) are rotated in a direction away from the base frame (1).

3. The lower limb exercise device using lifting action according to claim 2, characterized in that: A valve (38) is provided on one side of the hydraulic pump (31) for moving the hydraulic oil inside the hydraulic pump (31) and the hydraulic cylinder (32). When the valve (38) is opened, the hydraulic oil inside the hydraulic cylinder (32) moves toward the hydraulic pump (31) under the load of the lifting operation part (10) and the tilting frame (2), compressing the piston rod (33) of the hydraulic cylinder (32) in a direction entering the interior of the hydraulic cylinder (32), so that the position adjustment guide rod (4), the tilting frame (2) and the lifting guide rod (3) rotate in a direction close to the base frame (1).

4. The lower limb exercise device using lifting motion according to claim 1, characterized in that: The lifting operation part (10) comprises: The movable seat (11) moves along the lifting guide rod (3), The foot pedal (12) is fixedly mounted on the movable seat (11) and is moved by the external force of the user. The foot pedal (12) can be fixedly arranged on a foot pedal position adjustment portion on a position adjustment guide rod (4), and can be adjusted to a fixed position along the position adjustment guide rod (4). The pedal position adjustment unit comprises: The guide pile (13) is fixedly arranged on the position adjustment guide rod (4) and forms a plurality of through holes. The guide bracket (14) is arranged to surround the outside of the guide pile (13) and form a through hole. A position fixing pin (15) is fixedly arranged on the guide bracket (14). A spring applies a force to pull the position fixing pin (15) toward the guide bracket (14), If an external force is applied to pull the position fixing pin (15) out of the through hole of the guide pile (13), the position of the guide bracket (14) can be adjusted along the length direction of the guide pile (13), and the position of the foot pedal (12) can be adjusted along the length direction of the position adjustment guide rod (4).

5. The lower limb exercise device using lifting motion according to claim 1, characterized in that: The lifting operation part (10) comprises: The movable seat (11) moves along the lifting guide rod (3), The foot pedal (12) is fixedly mounted on the movable seat (11) and is moved by the external force of the user. The footrest (12) is fixedly connected to the movable seat (11) via a first hinge (17) so as to be rotatable within a specified range with the first hinge (17) as the center. A first link (18) is fixedly provided on one side of the footrest (12); one side of the first link (18) is connected to an impact absorbing link (20) via a second hinge (19); and the impact absorbing link (20) is fixedly connected to a position adjustment guide rod (4) via a third hinge (21). If an external force is applied to the foot pedal (12), the foot pedal (12) can rotate within a specified angle with the first hinge (17) as the center. When the foot pedal (12) descends and applies an impact to the user's foot, the impact applied to the user's foot can be reduced by operating the impact absorbing link (20).

6. The lower limb exercise device using lifting motion according to claim 1, characterized in that: The chair (41) can move along a guide frame (42) fixedly arranged on the placement frame (40), and can adjust the distance between the chair (41) and the footrest (12). The rotation position can be adjusted by an angle adjustment portion provided on one side of the placement frame (40). The angle adjustment unit comprises: The arc-shaped position fixing frame (43) is fixedly arranged on the chair (41) and is formed with a plurality of through holes (43a). A guide frame (44) is arranged on one side of the position fixing frame (43), guides the rotation path of the position fixing frame and forms a long hole, The rotational position fixing pin (45) is inserted into the through hole (43a) and can fix the rotational position of the position fixing frame (43).

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