Resistance-adjustable training bicycle for children rehabilitation

Abstract

This invention discloses a children's rehabilitation exercise bike with adjustable resistance, belonging to the field of children's rehabilitation training equipment technology. The invention utilizes a structural design that adapts to the adjustable pedal assembly, employing a spring-driven baffle and adjustment slider to achieve elastic clamping and positioning of the child's foot. Anti-slip grooves on the auxiliary frame enhance foot friction, accommodating different foot sizes and preventing slippage during rehabilitation training, thus improving foot stability. Simultaneously, the frame assembly features multiple adjustment holes in the handlebars, seat, and adapter frame, allowing for height adjustment to suit children of different heights. A resistance adjustment limiting component, relying on the ratchet and locking pawl of the limiting power adjustment component, locks the resistance adjustment handlebars, preventing the child from automatically unlocking and adjusting them while seated for exercise.

Description

Technical Field

[0001] This invention relates to the field of children's rehabilitation training equipment technology, specifically to a children's rehabilitation training bicycle with adjustable resistance. Background Technology

[0002] Children with lower limb motor dysfunction often need to use foot-operated rehabilitation training devices to carry out muscle strength and joint range of motion rehabilitation training.

[0003] There are still many shortcomings in the existing children's rehabilitation pedal training vehicles on the market: Most foot pedals are of a fixed size and cannot be adapted to the different sizes of children's feet. The feet are prone to slipping during pedaling. They lack an elastic clamping and locking structure, resulting in poor foot stability during training and posing a safety hazard. Secondly, most of the training resistance adjustment knobs lack locking protection, allowing children to turn them on their own to adjust the resistance and arbitrarily change the training load. Excessive resistance can easily cause strains in children's lower limb joints and muscles. The lack of a locking mechanism to prevent accidental activation and the requirement for a guardian to unlock the knob before resistance adjustment is a significant safety feature. Third, some rehabilitation bicycle frames have limited adjustment options for handlebars and seat height, resulting in insufficient flexibility to accommodate children of different heights.

[0004] Therefore, a new solution is needed to address the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a training bicycle with adjustable resistance for children's rehabilitation, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a children's rehabilitation exercise bike with adjustable resistance, comprising a frame assembly, an adjustable pedal assembly, and a resistance adjustment limiting assembly; The frame assembly is equipped with adjustable pedal assemblies on both sides. The design of the frame assembly and the adjustable pedal assemblies makes it suitable for the use needs of different children. The adjustable pedal assemblies are designed to accommodate different foot sizes, and the elastic clamping design of the adjustable pedal assemblies achieves a better foot locking effect. The power output section of the frame assembly is equipped with a resistance adjustment limit component, which is used to adjust the friction resistance of the bicycle and prevent accidental contact during friction locking. The device requires a supervisor to unlock and adjust the resistance, which greatly improves safety and training monitoring effectiveness.

[0007] Furthermore, the resistance adjustment and limiting assembly includes an extension frame, a first positioning frame, a bearing seat, a linkage rod, a friction disc, an actuation linkage assembly, and a limiting power adjustment assembly; An extension frame is fixedly connected to one end of the frame assembly, and a first positioning frame and a bearing seat are fixedly connected to the top end of the extension frame. The inner side of the bearing housing is rotatably connected to a linkage rod, and one end of the linkage rod is fixedly connected to a friction disc; An execution linkage component is provided at the end of the first positioning frame near the friction disc, and a limit power adjustment component is provided at the other end of the first positioning frame.

[0008] Furthermore, the execution linkage component includes a first guide limit frame, a stroke groove, a first linkage slider, and a linkage push rod. The first guide limit frame is fixedly connected to both sides of the top of the first positioning frame. A stroke groove is opened at one end of the first guide limit frame. The first linkage slider is slidably connected to the inner side of the stroke groove. A linkage push rod is fixedly connected to one end of the first linkage slider.

[0009] Furthermore, the execution linkage component also includes a second linkage slider, a linkage displacement groove, a linkage flip disk, a folding linkage rod, a push guide rod, and a central rotating shaft; The top and bottom of the first positioning frame are fixedly connected to a second guide limiting frame. One end of the second guide limiting frame is slidably connected to a second linkage slider. One end of the second linkage slider is provided with a linkage displacement groove. The linkage push rod is slidably connected to the inner side of the linkage displacement groove. The inner side of the first positioning frame is rotatably connected to a central rotating shaft. The outer side of the central rotating shaft is fixedly connected to a linkage flipping disk. The top and bottom of the linkage flipping disk are rotatably connected to a folding linkage rod. The end of the first linkage slider is fixedly connected to a push sliding rod.

[0010] Furthermore, the push rod is slidably connected to the inside of the stroke groove.

[0011] Furthermore, friction wheels are provided at the ends of both the first and second linkage sliders, and the friction wheels and the friction disc are both made of high-friction materials.

[0012] Furthermore, the limiting power adjustment assembly includes a grip, a rib plate frame, a spring, a central positioning post, a locking claw plate, and a ratchet; A ratchet and a handle are fixedly connected to the outer side of the central rotating shaft. The handle is located at one end of the ratchet. A rib plate is fixedly connected to one side of the second guide limit frame. A central positioning post is fixedly connected to the other end of the second guide limit frame. A locking claw plate is rotatably connected to the outer side of the central positioning post. The locking claw plate and the rib plate are connected by a spring. The ratchet is locked to the locking claw plate.

[0013] Furthermore, the frame assembly includes a base, pedals, handlebars, adapter frame, seat, protective plate, driven sprocket, drive sprocket, and drive chain; A handle is inserted into the top of one side of the base, and the handle is fixedly connected to the base by bolts; A foot pedal is rotatably connected to the inner side of the base; An adapter frame is inserted into the top of the other side of the base, and a seat cushion is inserted into one side of the adapter frame. Both the adapter frame and the seat cushion are fixedly connected to the base by bolts. A protective plate is fixedly connected to one side of the base. The foot pedal is rotatably connected to the protective plate. A driven sprocket is rotatably connected to the outer side of the protective plate. The central rotating shaft is fitted and connected to the driving sprocket. The driving sprocket and the driven sprocket are connected by a transmission chain.

[0014] Furthermore, the adaptive adjustable pedal assembly includes a central shaft, an auxiliary frame, an anti-slip groove, an adjusting slider, a baffle, a guide post, and a spring; The central axis is fitted with the pedal rod. Auxiliary frames are fixedly connected to both sides of the central axis. Multiple anti-slip grooves are provided at the top of the auxiliary frame. An adjusting slider is slidably connected to the inner side of the auxiliary frame. A baffle is fixedly connected to one end of the adjusting slider. A guide post is slidably connected to the inner side of the baffle. One side of the guide post is fixedly connected to the auxiliary frame. A spring is sleeved on the outer side of the auxiliary frame. One side of the spring is fixedly connected to the baffle, and the other side of the spring is fixedly connected to the auxiliary frame.

[0015] Furthermore, the handle, adapter frame, and seat are all provided with multiple adjustment holes, and the installation positions of the handle, adapter frame, and seat are adjusted by bolts passing through the base and the corresponding adjustment holes.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the structural design of the adjustable foot pedal assembly, uses a spring to push the baffle and the adjusting slider to achieve elastic clamping and positioning of the child's foot. The auxiliary frame is equipped with anti-slip grooves to increase the friction of the foot, which can accommodate different sizes of feet, prevent the foot from slipping during rehabilitation training, and improve the stability of foot fixation during training. At the same time, the handlebars, seat, and adapter frame of the frame assembly are equipped with multiple sets of adjustment holes to adjust the height position and adapt to children of different heights for rehabilitation use.

[0017] 2. This invention uses a resistance adjustment limiting component, relying on the ratchet and locking pawl plate of the limiting power adjustment component to lock the resistance adjustment grip. When a child sits down in front to prepare for cycling exercise, they cannot complete the unlocking and adjustment simultaneously on their own. Only a guardian can operate the unlocking and rotate the grip, which drives the actuator to drive the friction wheel to press the friction disc and change the friction resistance. This prevents children from changing the training resistance on their own, which could cause muscle and joint strains, improves the safety of rehabilitation training, and achieves adjustable resistance while also having anti-accidental locking protection. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the resistance adjustment and limiting component of the present invention; Figure 3 This is a schematic diagram of the structure of the linkage component of the present invention; Figure 4 This is a schematic diagram of the structure of the limiting power adjustment component of the present invention; Figure 5 This is a schematic diagram of the structural assembly of the resistance adjustment and limiting component of the present invention; Figure 6 This is an exploded view of the vehicle frame assembly of the present invention; Figure 7 This is a schematic diagram of the structure of the adjustable pedal assembly adapted to this invention.

[0020] Explanation of reference numerals in the attached diagram: 1. Frame assembly; 2. Adjustable pedal assembly; 3. Resistance adjustment limit assembly; 4. Extension frame; 5. First positioning frame; 6. Bearing seat; 7. Linkage rod; 8. Friction disc; 9. Actuation linkage assembly; 10. Limiting power adjustment assembly; 11. First guide limit frame; 12. Stroke groove; 13. First linkage slider; 14. Linkage push rod; 15. Friction wheel; 16. Second guide limit frame; 17. Second linkage slider; 18. Linkage displacement groove; 19. Linkage tilting disc; 2 0. Folding linkage rod; 21. Push guide slide rod; 22. Central pivot; 23. Handle; 24. Rib plate frame; 25. Spring; 26. Central positioning post; 27. Locking claw plate; 28. Ratchet; 29. ​​Base; 30. Foot pedal rod; 31. Handle; 32. Adapter frame; 33. Seat cushion; 34. Protective plate; 35. Driven sprocket; 36. Drive sprocket; 37. Drive chain; 38. Central shaft; 39. Auxiliary frame; 40. Anti-slip groove; 41. Adjusting slider; 42. Baffle; 43. Guide post; 44. Spring. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Please see Figures 1-7A children's rehabilitation training bicycle with adjustable resistance includes a frame assembly 1, an adjustable pedal assembly 2, and a resistance adjustment limit assembly 3. The frame assembly 1 is fitted with adjustable pedal assemblies 2 on both sides, and the frame assembly 1 is fitted with a resistance adjustment limit assembly 3 at the power output end.

[0023] The frame assembly 1 consists of a base 29, pedals 30, handlebars 31, an adapter frame 32, a seat 33, a protective plate 34, a driven sprocket 35, a drive sprocket 36, and a drive chain 37. The handlebars 31 are inserted into the top of one side of the base 29 and secured with bolts. The pedals 30 are rotatably mounted inside the base 29. The adapter frame 32 is inserted into the top of the other side of the base 29, and the seat 33 is inserted into the side of the adapter frame 32. Both the adapter frame 32 and the seat 33 are secured to the base 29 with bolts. A protective plate 34 is fixed to the side of the seat 29, and the foot pedal 30 is rotatably connected to the protective plate 34. A driven sprocket 35 is rotatably installed on the outer side of the protective plate 34. The central shaft 22 of the resistance adjustment limit assembly 3 is equipped with a drive sprocket 36, and a transmission chain 37 is assembled between the drive sprocket 36 and the driven sprocket 35 to realize the transmission of pedaling power. Multiple sets of adjustment holes are opened on the handle 31, the adapter frame 32, and the seat 33. The height can be adjusted by aligning the bolts with different adjustment holes to accommodate children of different heights.

[0024] The adjustable pedal assembly 2 includes a central shaft 38, an auxiliary frame 39, an anti-slip groove 40, an adjusting slider 41, a baffle 42, a guide post 43, and a spring 44; The central axis 38 and foot pedal 30 are fixedly assembled, and auxiliary frames 39 are fixed on both sides of the central axis 38. Multiple anti-slip grooves 40 are provided on the auxiliary frames 39, and an adjusting slider 41 is slidably mounted inside the auxiliary frames 39. The adjusting slider 41 is connected to a baffle 42. A guide post 43 slides through the baffle 42, and one end of the guide post 43 is fixed to the auxiliary frame 39. A spring 44 is sleeved on the outside of the guide post 43, and both ends of the spring 44 are connected to the baffle 42 and the auxiliary frame 39 respectively. In use, the foot steps on the auxiliary frame 39, pushing the baffle 42 to compress the spring 44. The reaction force of the spring 44 presses the baffle tightly against both sides of the foot, achieving elastic clamping and positioning. The anti-slip grooves increase the friction of the foot contact surface, preventing slippage during pedaling.

[0025] The resistance adjustment and limiting assembly 3 includes an extension frame 4, a first positioning frame 5, a bearing seat 6, a linkage rod 7, a friction disc 8, an actuation linkage assembly 9, and a limiting power adjustment assembly 10. The extension frame 4 is fixed to one end of the base, and the first positioning frame 5 and the bearing seat 6 are fixed to the upper end of the extension frame 4. The linkage rod 7 is rotatably installed inside the bearing seat 6, and the friction disc 8 is fixed to one end of the linkage rod 7. The actuation linkage assembly 9 is arranged at one end of the first positioning frame near the friction disc 8, and the limiting power adjustment assembly 10 is arranged at the other end.

[0026] The linkage assembly 9 includes a first guide limit frame 11, a stroke groove 12, a first linkage slider 13, a linkage push rod 14, a friction wheel 15, a second guide limit frame 16, a second linkage slider 17, a linkage displacement groove 18, a linkage flip plate 19, a folding linkage rod 20, a push slide rod 21, and a central rotating shaft 22. The first guide limit frame 11 is fixed to both sides of the top of the first positioning frame 5. The first guide limit frame 11 has a stroke groove 12, and the first linkage slider 13 slides inside the stroke groove 12. The first linkage slider 13 is connected to the linkage push rod 14 and the push slide rod 21. The push slide rod 21 moves within the stroke groove. The groove 12 slides inside; the first positioning frame 5 is fixed at both ends with the second guide limit frame 16, the second guide limit frame 16 is slidably assembled with the second linkage slider 17, the second linkage slider 17 has a linkage displacement groove 18, and the linkage push rod 14 is slidably assembled in the linkage displacement groove 18; the central rotating shaft 22 is rotatably assembled inside the first positioning frame 5, the central rotating shaft 22 is fixed with the linkage flip disk 19, and the linkage flip disk 19 is hinged at both ends to receive the folding linkage rod 20; the ends of the first linkage slider 13 and the second linkage slider 17 are both equipped with friction wheels 15, and the friction wheels 15 and the friction disk 8 are both made of high friction material.

[0027] The limit power adjustment assembly 10 includes a handle 23, a rib frame 24, a spring 25, a central positioning post 26, a locking claw plate 27, and a ratchet 28. The ratchet 28 and the handle 23 are fixed to the outside of the central rotating shaft 22, and the handle 23 is located on one side of the ratchet 28. The rib frame 24 is fixed to one side of the second guide limit frame 16, and the central positioning post 26 is fixed to the other end of the second guide limit frame 16. The locking claw plate 27 is rotatably mounted on the outside of the central positioning post 26, and the spring 25 is connected between the locking claw plate 27 and the rib frame 24. The spring 25 drives the locking claw plate 27 to engage with the tooth groove of the ratchet 28 to achieve locking.

[0028] When using this device, firstly, according to the child's height, the height of the seat and armrests can be adjusted by changing the assembly position of the corresponding adjustment holes of the handle 31, adapter 32, and seat 33. When the child's foot steps into the matching adjustable foot pedal assembly 2, the foot presses against the baffle 42 to compress the spring 44. The spring 44 continuously outputs elastic force to clamp the sides of the foot, thus limiting and fixing the foot and preventing slippage.

[0029] When adjusting the resistance, the guardian needs to release the locking claw plate 27 to overcome the spring force of the spring 25 and release the locking claw plate 27 from the ratchet 28. Then, the grip 23 is rotated to drive the central shaft 22 and the linkage flip plate 19 to rotate. The linkage flip plate 19 drives the upper and lower sets of folding linkage rods 20, driving the first linkage slider 13 and the second linkage slider 17 to slide along the first guide limit frame 11 and the second guide limit frame 16. The first linkage slider 13 drives the linkage push rod 14 to slide in the linkage displacement groove 18, pushing each friction wheel 15 to move closer to the friction plate 8 and press it. The greater the pressure between the friction wheel 15 and the friction plate 8, the greater the frictional resistance that needs to be overcome when pedaling. After adjusting to a suitable resistance, the locking claw plate 27 is released, and the spring 25 drives the locking claw plate 27 to re-engage with the ratchet 28, locking the grip 23. The child cannot unlock and change the resistance on their own.

[0030] The child pedals the pedal lever 30, which drives the driven sprocket 35 to rotate. Through the transmission chain 37, the driving sprocket 36, the linkage rod 7, and the friction disc 8 are driven to rotate. The friction between the friction disc 8 and the friction wheel 15 constitutes the training load, realizing the lower limb rehabilitation pedaling training.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A resistance-adjustable training bicycle for children rehabilitation, characterized in that: Includes frame assembly (1), adjustable pedal assembly (2) and resistance adjustment limit assembly (3); The frame assembly (1) is provided with adjustable pedal assemblies (2) on both sides. The design of the frame assembly (1) and the adjustable pedal assembly (2) is convenient to meet the needs of different children. The adjustable pedal assembly (2) is designed to adapt to different foot sizes. The elastic clamping design of the adjustable pedal assembly (2) achieves a better foot locking effect. The power output section of the frame assembly (1) is provided with a resistance adjustment limit assembly (3). The resistance adjustment limit assembly (3) is used to adjust the friction resistance of the bicycle and prevent accidental contact during friction. The device requires a supervisor to unlock and adjust the resistance, which greatly improves safety and training monitoring.

2. The adjustable resistance training bicycle for children rehabilitation according to claim 1, wherein: The resistance adjustment and limiting assembly (3) includes an extension frame (4), a first positioning frame (5), a bearing seat (6), a linkage rod (7), a friction disc (8), an actuation linkage assembly (9), and a limiting power adjustment assembly (10). One end of the frame assembly (1) is fixedly connected to an extension frame (4), and the top end of the extension frame (4) is fixedly connected to a first positioning frame (5) and a bearing seat (6). The inner side of the bearing seat (6) is rotatably connected to a linkage rod (7), and one end of the linkage rod (7) is fixedly connected to a friction disc (8). The first positioning frame (5) is provided with an execution linkage component (9) at the end near the friction disc (8), and a limit power adjustment component (10) is provided at the other end of the first positioning frame (5).

3. The adjustable resistance training bicycle for children rehabilitation according to claim 2, characterized in that: The execution linkage component (9) includes a first guide limit frame (11), a stroke groove (12), a first linkage slider (13), and a linkage push rod (14). The first guide limit frame (11) is fixedly connected to both sides of the top of the first positioning frame (5). A stroke groove (12) is opened at one end of the first guide limit frame (11). The first linkage slider (13) is slidably connected to the inner side of the stroke groove (12). A linkage push rod (14) is fixedly connected to one end of the first linkage slider (13).

4. The adjustable resistance training bicycle for children rehabilitation according to claim 3, characterized in that: The execution linkage component (9) also includes a second linkage slider (17), a linkage displacement groove (18), a linkage flip disk (19), a folding linkage rod (20), a push guide rod (21), and a central rotating shaft (22). The top and bottom ends of the first positioning frame (5) are fixedly connected to the second guide limit frame (16). One end of the second guide limit frame (16) is slidably connected to the second linkage slider (17). One end of the second linkage slider (17) is provided with a linkage displacement groove (18). The linkage push rod (14) is slidably connected to the inner side of the linkage displacement groove (18). The inner side of the first positioning frame (5) is rotatably connected to the central rotating shaft (22). The outer side of the central rotating shaft (22) is fixedly connected to the linkage flip disk (19). The top and bottom ends of the linkage flip disk (19) are rotatably connected to the folding linkage rod (20). The end of the first linkage slider (13) is fixedly connected to the push guide rod (21).

5. The adjustable resistance training bicycle for children rehabilitation according to claim 4, characterized in that: The pusher slide (21) is slidably connected to the inside of the stroke groove (12).

6. The adjustable resistance training bicycle for children rehabilitation according to claim 4, wherein: Friction wheels (15) are provided at the ends of the first linkage slider (13) and the second linkage slider (17). The friction wheels (15) and the friction disc (8) are both made of high-friction materials.

7. The adjustable resistance training bicycle for children rehabilitation according to claim 4, wherein: The limiting power adjustment assembly (10) includes a handle (23), a rib plate frame (24), a spring (25), a center positioning post (26), a locking claw plate (27), and a ratchet (28). A ratchet (28) and a handle (23) are fixedly connected to the outer side of the central pivot (22). The handle (23) is located at one end of the ratchet (28). A rib plate frame (24) is fixedly connected to one side of the second guide limit frame (16). A central positioning post (26) is fixedly connected to the other end of the second guide limit frame (16). A locking claw plate (27) is rotatably connected to the outer side of the central positioning post (26). The locking claw plate (27) and the rib plate frame (24) are connected by a spring (25). The ratchet (28) is locked to the locking claw plate (27).

8. The adjustable resistance training bicycle for children rehabilitation according to claim 1, wherein: The frame assembly (1) includes a base (29), pedals (30), handlebars (31), adapter (32), seat (33), guard plate (34), driven sprocket (35), drive sprocket (36) and drive chain (37). A handle (31) is inserted into the top of one side of the base (29), and the handle (31) is fixedly connected to the base (29) by bolts; The foot pedal (30) is rotatably connected to the inside of the base (29). An adapter (32) is inserted into the top of the other side of the base (29), and a cushion (33) is inserted into one side of the adapter (32). The adapter (32) and the cushion (33) are both fixedly connected to the base (29) by bolts. A protective plate (34) is fixedly connected to one side of the base (29). The foot pedal (30) is rotatably connected to the protective plate (34). A driven sprocket (35) is rotatably connected to the outer side of the protective plate (34). The central rotating shaft (22) is fitted and connected to the driving sprocket (36). The driving sprocket (36) and the driven sprocket (35) are connected by a transmission chain (37).

9. The adjustable resistance training bicycle for children rehabilitation according to claim 8, characterized in that: The adaptive adjustable pedal assembly (2) includes a central shaft (38), an auxiliary frame (39), an anti-slip groove (40), an adjusting slider (41), a baffle (42), a guide post (43), and a spring (44). The central shaft (38) is fitted with the foot pedal (30). Auxiliary frames (39) are fixedly connected to both sides of the central shaft (38). Multiple anti-slip grooves (40) are provided at the top of the auxiliary frame (39). An adjusting slider (41) is slidably connected to the inner side of the auxiliary frame (39). A baffle (42) is fixedly connected to one end of the adjusting slider (41). A guide post (43) is slidably connected to the inner side of the baffle (42). One side of the guide post (43) is fixedly connected to the auxiliary frame (39). A spring (44) is sleeved on the outer side of the auxiliary frame (39). One side of the spring (44) is fixedly connected to the baffle (42), and the other side of the spring (44) is fixedly connected to the auxiliary frame (39).

10. The adjustable resistance training bicycle for children rehabilitation according to claim 8, wherein: Multiple adjustment holes are provided at the handle (31), adapter (32) and seat (33). The installation positions of the handle (31), adapter (32) and seat (33) can be adjusted by bolts passing through the base (29) and the corresponding adjustment holes.

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