A synchronous counter movement device for a pelvic trainer

Abstract

The application discloses a synchronous reverse movement device of a pelvis training device, which comprises a base, a right rocker arm and a left rocker arm, the base is rotationally installed with the right rocker arm and the left rocker arm, the lower end of the right rocker arm is fixed with a first connecting rod, the upper end of the first connecting rod is hingedly connected with the left end of a second connecting rod, the right end of the second connecting rod is fixed with the left end of a third connecting rod, the right end of the third connecting rod is fixed on the front end of the right rocker arm, the lower end of a damping connecting rod is fixed on the left rocker arm, the upper end of the damping connecting rod is hingedly connected with the left end of a piston rod, the right end of the piston rod is slidably arranged in a shell, the right end of the piston rod is fixed with a movable magnet, the left end of the shell is fixed with a fixed magnet, a reset spring is arranged on the piston rod between the movable magnet and the fixed magnet, the left rocker arm is driven by a chain transmission mechanism to drive a rotating shaft of a water damper, the rotating shaft is fixed with a resistance wheel through a one-way bearing, the resistance wheel is fixed with a plurality of blades, and the pelvis training device is realized, which has the advantages that the restoring force is small when the movement range changes, the water level of the water damper can be adjusted, the transparent shell improves the interestingness of the device.

Description

Technical Field

[0001] This invention relates to a synchronous reverse movement device for a pelvic rehabilitation training device, belonging to the field of rehabilitation medical device technology. Background Technology

[0002] Using rehabilitation training equipment to assist in rehabilitation exercises is a common method in rehabilitation training. In pelvic rehabilitation training, in order to ensure the consistency of rehabilitation training for the left and right pelvic bones, the training equipment needs to be able to perform synchronous reverse movements during rehabilitation training. When the reverse movement mechanism moves outward towards the patient, it needs to provide a restoring force for repositioning. A common structure is a repositioning structure using spring compression. However, as the compression of the spring increases, the resistance increases, making it difficult for patients with weak muscle strength to achieve a large range of motion. In addition, different patients need to be provided with different damping training. Using electromagnetic damping during rehabilitation exercises lacks fun. Summary of the Invention

[0003] The purpose of this invention is to provide a pelvic training device that enables bilateral upper and lower limb movement in both directions via a linkage mechanism, employs a magnetic spring reset mechanism to minimize changes in restoring force during changes in the range of motion, and utilizes a water damper to adjust water level changes and a transparent shell to enhance the fun of pelvic training.

[0004] The technical solution of this invention is implemented as follows: A synchronous reverse motion device for a pelvic trainer includes a base 1, a water damper 6, a right rocker arm 7, and a left rocker arm 9. The front end of the right rocker arm 7 and the front end of the left rocker arm 9 are rotatably mounted on the front end of the base 1. The lower end of a first connecting rod 13 is fixed to the front end of the right rocker arm 7. The upper end of the first connecting rod 13 is hinged to the left end of a second connecting rod 14. The right end of the second connecting rod 14 is fixed to the left end of a third connecting rod 15. The right end of the third connecting rod 15 is fixed to the front end of the right rocker arm 7. The lower end of the damping link 10 is fixed at the front end of the left rocker arm 9. The upper end of the damping link 10 is hinged to the left end of the piston rod 23. The right end of the piston rod 23 slides inside the housing 24. The right end of the housing 24 is hinged to the base 1. The right end of the piston rod 23 is fixed with a movable magnet 28. The left end of the housing is fixed with a fixed magnet 26. A return spring 27 is sleeved on the piston rod 23 between the movable magnet 28 and the fixed magnet 26. The magnetic poles of the movable magnet 28 and the fixed magnet are opposite in direction on the opposite side. The restoring force of the return spring 27 is greater than the attraction force between the fixed magnet 26 and the movable magnet 28. The left rocker arm 9 is driven by the rotating shaft 19 of the water damper 6 through a chain transmission mechanism. The rotating shaft 19 fixes the resistance wheel 18 through a one-way bearing 21. The resistance wheel 18 fixes multiple blades 17. The blades 17 are located in the damping water tank 30 of the water damper 6, and the water level in the damping water tank 30 is adjustable. The left rocker arm 9 is provided with a left footrest 903, a left leg slot 902, and a left handle 901. The left rocker arm 9 and the right rocker arm are arranged symmetrically.

[0005] Preferably, the water damper 6 includes a water storage tank 3, a water supply pump 4, a return water pump 5, a large sprocket 11, a blade 17, a resistance wheel 18, a rotating shaft 19, a small sprocket 20, a one-way bearing 21, and a damping water tank 30. The large sprocket 11 is fixed to the front end of the left rocker arm 9. The large sprocket 11 forms a chain drive with the small sprocket 20 through a chain. The small sprocket 20 is fixed to the rear end of the rotating shaft 19. The front and rear ends of the rotating shaft 19 are rotatably mounted on the front and rear housings of the damping water tank 30. The inner ring of the one-way bearing 21 is fixed to the rotating shaft 19, and the resistance wheel 18 is fixed to the outer ring of the one-way bearing 21. The inlet and outlet of the return water pump 5 are respectively connected to the damping water tank 30 and the water storage tank 3. The inlet and outlet of the water supply pump 4 are respectively connected to the water storage tank 3 and the damping water tank 30. The damping water tank 30, the water supply pump 4, and the return water pump 5 are all fixed to the front end of the base 1.

[0006] Preferably, the left end of the outer shell 24 is fixed with a magnet seat 25, the magnet seat 25 fixes the fixed magnet 26, the right end of the piston rod 23 is fixed with a sliding sleeve 29, the sliding sleeve 29 fixes the movable magnet 28, the sliding sleeve 29 slides inside the outer shell 24, and the piston rod 23 passes through the center hole of the magnet seat 25 and the left end of the outer shell 24 and is hinged to the upper end of the damping connecting rod 10.

[0007] Preferably, the base 1 has a fixed support frame 2 at its front end. The support frame 2 is arranged in a vertical direction. The front ends of the left rocker arm 9 and the right rocker arm 7 are respectively rotatably installed on the left and right sides of the support frame 2. The left end of the outer shell 24 is hinged to the support frame 2.

[0008] Preferably, a limit block 16 is provided at the lower part of the connecting rod 3 15. The limit block 16 is fixed on the base 1 and is used to limit the downward swing range of the left end of the connecting rod 3 15 to prevent the patient's right rocker arm from swinging to the right of the patient beyond the limit value.

[0009] Preferably, the left rocker arm 9 extends to the rear and then to the top in sequence. A left foot support 903 extending to the left is fixed to the lower rear end of the left rocker arm 9 to support the patient's left foot. A left leg slot 902 is provided at the upper rear end of the left rocker arm 9 to hold the patient's left calf. A left handle 901 is provided at the upper rear end of the left rocker arm 9 for the patient's left hand to grasp.

[0010] Preferably, the damping water tank 30 is made of a transparent material.

[0011] The present invention has the following advantages: The device employs a multi-link mechanism to achieve reverse movement of the upper and lower limbs on both sides, thereby enabling pelvic movement for the patient. The bilateral rocker arm reduction system uses spring reduction while incorporating mutually attracting magnets to reduce the impact of spring compression resistance on patient movement as the range of motion increases. The device also features a water damper structure with a transparent outer shell, allowing the patient to see the blades rotating and stirring the water inside, adding to the enjoyment. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the synchronous reverse motion device of the pelvic trainer.

[0013] Figure 2 This is a schematic diagram of the left rocker arm.

[0014] Figure 3 This is a schematic diagram of the linkage transmission mechanism. Figure 1 .

[0015] Figure 4 This is a schematic diagram of the linkage transmission mechanism. Figure 2 .

[0016] Figure 5 This is a schematic diagram of a water damper.

[0017] Figure 6 This is a schematic diagram of a magnet spring reset structure.

[0018] 1-Base, 2-Support frame, 3-Water tank, 4-Water supply pump, 5-Return pump, 6-Water damper, 7-Right rocker arm, 8-Seat, 9-Left rocker arm, 901-Left handle, 902-Left leg slot, 903-Left footrest, 10-Damping linkage, 11-Large sprocket, 12-Magnetic spring return structure, 13-Link 1, 14-Link 2, 15-Link 3, 16-Limit stop, 17-Blade, 18-Resistance wheel, 19-Shaft, 20-Small sprocket, 21-One-way bearing, 22-Rotary encoder, 23-Piston rod, 24-Housing shell, 25-Magnet seat, 26-Fixed magnet, 27-Return spring, 28-Moving magnet, 29-Sliding sleeve, 30-Damping water tank. Implementation

[0019] Combination Figure 1-6The present invention discloses a synchronous reverse motion device for a pelvic training device, comprising a base 1, a support frame 2, a water damper 6, a right rocker arm 7, a seat 8, a left rocker arm 9, a damping link 10, a magnetic spring return structure 12, a first link 13, a second link 14, a third link 15, a limit stop 16, and a rotary encoder 22. The water damper 6 includes a water tank 3, a water supply pump 4, a return pump 5, a large sprocket 11, a blade 17, a resistance wheel 18, a rotating shaft 19, a small sprocket 20, a one-way bearing 21, and a damping water tank 30. The magnetic spring return structure... Structure 12 includes a piston rod 23, a housing 24, a magnet base 25, a fixed magnet 26, a return spring 27, a movable magnet 28, and a sliding sleeve 29. The up-down, forward-backward, and left-right directions of this application are defined by the patient's movement while seated in the chair. The rear end of the base 1 is fixed to the seat 8, and the front end of the base 1 is fixed to the support frame 2. The support frame 2 is arranged vertically, and the front ends of the left rocker arm 9 and right rocker arm 7 are rotatably mounted on the left and right sides of the support frame 2, respectively. The base 1 has a symmetrical structure. The left rocker arm 9 and... The right rocker arm 7 is symmetrically arranged about the left and right symmetrical planes of the base 1. The front end of the right rocker arm 7 passes forward through the support frame 2 and is fixed to the lower end of the first connecting rod 13. The upper end of the first connecting rod 13 is hinged to the left end of the second connecting rod 14. The right end of the second connecting rod 14 is fixed to the left end of the third connecting rod 15. The right end of the third connecting rod 15 is fixed to the front end of the right rocker arm 7. The front end of the left rocker arm 9 is fixed to the lower end of the damping connecting rod 10. The upper end of the damping connecting rod 10 is hinged to the left end of the piston rod 23 of the magnetic spring return structure 12. The piston rod 23 slides along the outer shell of the magnetic spring return structure 12. A magnet base 25 is fixed to the left end of the outer casing 24, and the magnet base 25 fixes the fixed magnet 26. A sliding sleeve 29 is fixed to the right end of the piston rod 23, and the sliding sleeve 29 fixes the movable magnet 28. The sliding sleeve 29 slides inside the outer casing 24. The magnetic poles of the movable magnet 28 and the fixed magnet are opposite on the opposite side. A return spring 27 is sleeved on the piston rod 23 between the movable magnet 28 and the fixed magnet 26. After the piston rod 23 passes through the center hole of the magnet base 25 and the left end of the outer casing 24, it is hinged to the upper end of the damping connecting rod 10. The restoring force of the return spring 27 is always greater than the attraction force between the fixed magnet 26 and the movable magnet 28.

[0020] The front end of the left rocker arm 9 is fixed with a large sprocket 11, and the shaft of the rotary encoder 22 is fixed with the shaft hole at the front end of the left rocker arm 9. The housing of the rotary encoder 22 is fixed on the support frame 2 by a support frame. The large sprocket 11 forms a chain drive with the small sprocket 20 through a chain. The small sprocket 20 is fixed to the rear end of the rotating shaft 19. The front end and rear end of the rotating shaft 19 are rotatably mounted on the front housing and rear housing of the damping water tank 30. The inner ring of the one-way bearing 21 is fixed to the rotating shaft 19. The outer ring of the one-way bearing 21 is fixed with a resistance wheel 18. Multiple radially protruding blades 17 are fixed on the resistance wheel 18.

[0021] The inlet and outlet of the return water pump 5 are connected to the damping water tank 30 and the storage tank 3, respectively, while the inlet and outlet of the supply water pump 4 are connected to the storage tank 3 and the damping water tank 30, respectively. The damping water tank 30, the supply water pump 4, and the return water pump 5 are all fixed to the front end of the base 1 and are used to adjust the water level in the damping water tank 30.

[0022] The lower part of the connecting rod 3 15 is provided with a limit stop 16 to limit the downward swing range of the left end of the connecting rod 3 15, so as to prevent the patient's right rocker arm from swinging to the right of the patient beyond the limit value, thereby injuring the patient's leg or pelvis.

[0023] The left rocker arm 9 extends backward and upward in sequence. A left foot support 903 extending to the left is fixed to the lower rear end of the left rocker arm 9 to support the patient's left foot. A left leg slot 902 is provided at the upper rear end of the left rocker arm 9 to hold the patient's left lower leg. A left handle 901 is provided at the upper rear end of the left rocker arm 9 for the patient's left hand to grasp.

[0024] The rotary encoder 22 collects the swing range of the patient's left rocker arm 9 and displays the swing range of the patient's left rocker arm 9 for each swing on a display fixed at the front of the base 1.

[0025] When the patient performs pelvic rehabilitation training, the patient's left hand grasps the left handle 901 and moves it to the left, and the left lower leg drives the left leg slot 902 to move to the left. As the left rocker arm 9 drives the first link 13, the second link 14, and the third link 15 to swing, the right rocker arm moves in the opposite direction, and the patient's lower legs move in the opposite direction, thus promoting pelvic movement rehabilitation training. At the same time, when the piston rod is pulled out to the left, the return spring 27 is compressed, and the compression resistance increases as the amount of compression of the return spring 27 increases. At this time, the distance between the fixed magnet 26 and the movable magnet 28 decreases, and the attraction between the magnetic poles increases, compensating for the increased resistance of the return spring 27. Therefore, the resistance to the patient driving the left rocker arm 9 and the right rocker arm 7 to move to the left and right sides of the patient, respectively, does not change significantly. The restoring force of the return spring 27 is always greater than the attraction between the fixed magnet 26 and the movable magnet 28, and the left rocker arm 9 and the right rocker arm 7 can still return to their original positions.

[0026] By controlling the rotation of the water supply pump 4, water in the storage tank 3 is pumped into the damping water tank 30. Since the rotating shaft 19 fixes the resistance wheel 18 through the one-way bearing 21, the resistance wheel 18 can only rotate in one direction to agitate the water in the damping water tank 30, providing damping. By controlling the water supply pump 4 to adjust the water volume in the damping water tank 30, the damping is increased. By using the return water pump 5 to pump the water in the damping water tank 30 back into the storage tank 3, the water volume in the damping water tank 30 is reduced, and the damping is decreased.

Claims

1. A synchronous reverse motion device for a pelvic training device, characterized in that... The device includes a base (1), a water damper (6), a right rocker arm (7), and a left rocker arm (9). The front end of the right rocker arm (7) and the front end of the left rocker arm (9) are rotatably mounted on the front end of the base (1). The front end of the right rocker arm (7) is fixed to the lower end of connecting rod one (13). The upper end of connecting rod one (13) is hinged to the left end of connecting rod two (14). The right end of connecting rod two (14) is fixed to the left end of connecting rod three (15). The right end of connecting rod three (15) is fixed to the front end of the right rocker arm (7). The front end of the left rocker arm (9) is fixed to the lower end of the damping connecting rod (10). The upper end is hinged to the left end of the piston rod (23), the right end of the piston rod (23) slides inside the outer shell (24), the right end of the outer shell (24) is hinged to the base (1), the right end of the piston rod (23) is fixed with a movable magnet (28), the left end of the outer shell is fixed with a fixed magnet (26), a return spring (27) is sleeved on the piston rod (23) between the movable magnet (28) and the fixed magnet (26), the magnetic poles of the movable magnet (28) and the fixed magnet are opposite in direction, and the restoring force of the return spring (27) is greater than the attraction between the fixed magnet (26) and the movable magnet (28); The left rocker arm (9) is driven by the rotating shaft (19) of the water damper (6) through a chain transmission mechanism. The rotating shaft (19) fixes the resistance wheel (18) through a one-way bearing (21). The resistance wheel (18) fixes multiple blades (17). The blades (17) are located in the damping water tank (30) of the water damper (6). The water level in the damping water tank (30) is adjustable. The left rocker arm (9) is provided with a left footrest (903), a left leg slot (902), and a left handle (901). The left rocker arm (9) and the right rocker arm are symmetrically arranged.

2. The synchronous reverse motion device of the pelvic trainer according to claim 1, characterized in that... The water damper (6) includes a water tank (3), a water supply pump (4), a return water pump (5), a large sprocket (11), blades (17), a resistance wheel (18), a rotating shaft (19), a small sprocket (20), a one-way bearing (21), and a damping water tank (30). The large sprocket (11) is fixed at the front end of the left rocker arm (9). The large sprocket (11) is connected to the small sprocket (20) by a chain to form a chain drive. The small sprocket (20) is fixed at the rear end of the rotating shaft (19). The front and rear ends of the rotating shaft (19) rotate... The damping water tank (30) is mounted on the front and rear housings. The rotating shaft (19) fixes the inner ring of the one-way bearing (21), and the outer ring of the one-way bearing (21) fixes the resistance wheel (18). The inlet and outlet of the return water pump (5) are connected to the damping water tank (30) and the storage tank (3) respectively. The inlet and outlet of the water supply pump (4) are connected to the storage tank (3) and the damping water tank (30) respectively. The damping water tank (30), the water supply pump (4), and the return water pump (5) are all fixed at the front end of the base (1).

3. The synchronous reverse motion device of the pelvic trainer according to claim 1, characterized in that... The left end of the outer shell (24) is fixed with a magnet seat (25), which fixes the fixed magnet (26). The right end of the piston rod (23) is fixed with a sliding sleeve (29), which fixes the movable magnet (28). The sliding sleeve (29) slides inside the outer shell (24). After the piston rod (23) passes through the center hole of the magnet seat (25) and the left end of the outer shell (24), it is hinged to the upper end of the damping connecting rod (10).

4. The synchronous reverse motion device of the pelvic trainer according to claim 1, characterized in that... The base (1) is fixed to the front end of the support frame (2). The support frame (2) is set in the vertical direction. The front end of the left rocker arm (9) and the front end of the right rocker arm (7) are respectively rotatably installed on the left and right sides of the support frame (2). The left end of the outer shell (24) is hinged to the support frame (2).

5. The synchronous reverse motion device of the pelvic trainer according to any one of claims 1-4, characterized in that... The lower part of the connecting rod three (15) is provided with a limit stop (16), which is fixed on the base (1) to limit the downward swing range of the left end of the connecting rod three (15) to prevent the patient's right rocker arm from swinging to the right of the patient beyond the limit value.

6. The synchronous reverse motion device of the pelvic trainer according to any one of claims 1-4, characterized in that... The left rocker arm (9) extends backward and upward in sequence. The left foot support (903) extending to the left is fixed at the lower rear end of the left rocker arm (9) to support the patient's left foot. A left leg slot (902) is provided at the upper rear end of the left rocker arm (9) to hold the patient's left calf. A left handle (901) is provided at the upper rear end of the left rocker arm (9) for the patient's left hand to grasp.

7. The synchronous reverse motion device of the pelvic trainer according to claim 2, characterized in that... The damping water tank (30) is made of transparent material.

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