Lower extremity muscle strength training system

Abstract

The application discloses a lower limb muscle strength training system, which comprises a base, a lower limb pedaling movement module, a seat adjusting system, a waist and abdomen muscle strength training module and a display adjusting module; the base is in contact with the ground; the lower limb pedaling movement module, the seat adjusting system, the waist and abdomen muscle strength training module and the display adjusting module are all installed on the base; the waist and abdomen muscle strength training module is installed on the base platform and comprises a supporting stand, a second damper, an L-shaped rocker arm, a back pulling rod and a back pressing roller.

Description

[0001] This application is a divisional application of the invention patent application with application number "202111436334.X", application date November 30, 2021, and invention title "A Comprehensive Training System for Lower Limb Muscle Strength". Technical Field

[0002] This invention relates to the field of rehabilitation training equipment, and in particular to a lower limb muscle strength training system. Background Technology

[0003] As people age, their bodily functions undergo physiological decline, with degenerative changes in muscles being particularly pronounced, severely impacting the quality of life for the elderly. Muscle strength training is an effective countermeasure against muscle weakness, improving joint flexibility and offering benefits for the body's response to movement, cardiovascular health, and psychological function. Muscle strength training can also effectively increase bone stress in the elderly, preventing osteoporosis, and positively contribute to improved static balance, reducing the risk of falls and effectively preventing disease.

[0004] Currently, there are many types of muscle strength training equipment available. First, the exercise rehabilitation and exercise training equipment commonly used in clinical rehabilitation are mainly for patients with loss or impairment of limb motor function, such as various passive or mixed active-passive joint movement training devices and rehabilitation training robots. These devices include joint mobility training and muscle strength training, and are mainly used for rehabilitation training and treatment of patients in the rehabilitation period of limb function due to cerebrovascular and nerve injuries. The equipment has a relatively complex structure, high technical content, and is relatively expensive.

[0005] Furthermore, rehabilitation and strength training equipment for the elderly and other groups with weakened muscle strength is generally used in nursing homes, welfare institutions, rehabilitation centers, and communities to meet the needs of elderly people with self-care abilities or those who are partially disabled. This type of equipment includes various types targeting different parts of the body, such as the upper and lower limbs, trunk, waist, chest, and back. A single device is generally used for training a single part or muscle group. If training multiple parts of the whole body is required, multiple devices are needed, requiring switching between them during training. While this type of equipment is relatively simple to operate and inexpensive, it suffers from problems such as limited functionality for individual devices, large space requirements for multiple devices in combined training, monotonous training processes, and lack of feedback on training effects. These issues lead to a lack of motivation for the elderly to continuously participate in rehabilitation exercises, resulting in low equipment utilization and preventing the elderly and other groups with weakened muscle strength from achieving their goals of limb strength enhancement. Therefore, truly suitable strength training equipment for the elderly is currently relatively scarce.

[0006] To address these issues, this invention proposes a comprehensive lower limb muscle strength training system that can solve the problems of existing lower limb muscle strength training equipment in elderly care institutions having limited functionality, requiring a wide variety of equipment for comprehensive lower limb training, occupying a large space, and having a monotonous training process. Summary of the Invention

[0007] To achieve the objectives of this invention, the following technical solution is adopted:

[0008] A comprehensive lower limb muscle strength training system includes: a base, a lower limb pedaling motion module, a seat adjustment system, a lumbar and abdominal muscle strength training module, and a display adjustment module; the base is in contact with the ground; the lower limb pedaling motion module, the seat adjustment system, the lumbar and abdominal muscle strength training module, and the display adjustment module are all mounted on the base.

[0009] The lower limb muscle strength comprehensive training system includes: a base comprising a front crossbeam, a middle longitudinal beam, and a base platform; the front crossbeam is fixedly connected to the base platform via two parallel middle longitudinal beams; the display adjustment module is fixed to one end of the front crossbeam; the lower limb pedaling exercise module is mounted on the middle longitudinal beam; and the seat adjustment system and the waist and abdominal muscle strength training module are mounted on the base platform.

[0010] The lower limb muscle strength comprehensive training system includes: the lower limb pedaling motion module has the same structure on both sides, each side including a foot pedal assembly, a first damper, a front swing arm and a rear swing arm, the lower ends of the front swing arm and the rear swing arm are respectively hinged to the middle longitudinal beam, the upper ends of the front swing arm and the rear swing arm are respectively hinged to the plate in the foot pedal assembly, the foot pedal is installed at the rear end of the plate, one end of the first damper is hinged to the rear swing arm, and the other end is hinged to the middle longitudinal beam.

[0011] The lower limb muscle strength comprehensive training system includes: a foot pedal assembly comprising a flat plate, a foot pedal, a strap, an upper hinge seat, an adjusting rod, a sliding rotating seat, a positioning knob, a lower hinge seat, and an ear plate; the two ends of the strap are respectively connected to the upper sides of the foot pedal, and the lower end of the foot pedal is hinged to one end of the flat plate; the lower hinge seat is fixedly mounted on the flat plate, and the sliding rotating seat is hinged to the lower hinge seat; one end of the adjusting rod is hinged to the upper hinge seat fixedly mounted on the foot pedal, and the other end is slidably sleeved with the sliding rotating seat; the adjusting rod is provided with multiple positioning holes, which are connected and cooperate with the positioning knob fixedly mounted on the sliding rotating seat.

[0012] The lower limb muscle strength comprehensive training system includes: the seat adjustment system includes a seat position adjustment module and an armrest and backrest adjustment module; the seat position adjustment module includes a seat, a seat lifting mechanism and a seat sliding mechanism; the seat lifting mechanism includes a moving column and a fixed column, and the moving column can move up and down relative to the fixed column; the seat sliding mechanism includes a slide rail positioner and a slide rail mechanism, and the lower part of the fixed column is fixed on the slide rail mechanism.

[0013] The lower limb muscle strength comprehensive training system includes: an armrest and backrest adjustment module comprising: a seat, armrests, an upper backrest, and a lower backrest. The seat is fixed to the top of a moving column. Two armrests are respectively installed on both sides of the seat. The lower backrest is installed at the rear of the seat. The upper backrest is installed on the upper part of the lower backrest via hinges. The armrests, seat, front swing rod, and rear swing rod form a parallelogram mechanism. One end of the front swing rod is hinged to the armrest, and the other end is hinged to the front axle seat fixed below the seat. One end of the rear swing rod is hinged to the armrest, and the other end is fixedly connected to one end of the rotating shaft of the rear axle seat fixed below the seat. The upper backrest is connected to each of the two armrests via a tilt angle adjustment mechanism. The tilt angle adjustment mechanism includes a hinge lug, a rotating arm, a double-ended pull rod, and a rear axle seat. The hinge lug is fixed to the upper backrest. The upper end of the double-ended pull rod is hinged to the hinge lug, and the lower end is hinged to the upper end of the rotating arm. The lower end of the rotating arm is fixedly connected to the other end of the rotating shaft of the rear axle seat. The lower limb muscle strength comprehensive training system includes an angle adjustment and positioning mechanism between the upper backrest and the lower backrest. The angle adjustment and positioning mechanism includes a slide rod, a positioning knob, a slide rod sleeve, and a sleeve hinge. A slide rod hinge is fixedly installed on the upper backrest, and a sleeve hinge is fixedly installed on the lower backrest. The slide rod sleeve is hinged to the sleeve hinge, and the positioning knob is fixedly installed on the slide rod sleeve. One end of the slide rod is hinged to the slide rod hinge, and the other end is sleeved with the slide rod sleeve.

[0014] The lower limb muscle strength comprehensive training system includes: a seat sliding mechanism comprising a slide rail locator and a slide rail mechanism; the slide rail mechanism comprising a linear guide rail seat, a rack, a guide shaft, a moving platform, and rolling guide wheels; the slide rail locator is fixedly installed at the front end of the moving platform, the fixed column of the seat lifting mechanism is fixed at the rear end of the moving platform, and two rolling guide wheels are installed on each side of the bottom of the moving platform; the platform base includes a base plate, a linear guide rail seat, and a rack, the linear guide rail seat and the rack being fixedly installed on the base plate at the bottom of the platform base; the two side walls of the linear guide rail seat are fixed to the base plate, a gap is left between the top plate of the linear guide rail seat and the base plate, a long slot is opened on the top plate of the linear guide rail seat, and the rack is located directly below the top plate of the linear guide rail seat, opposite to the long slot on the linear guide rail seat; a guide groove is opened on the outer side of each side wall of the linear guide rail seat, a guide shaft is fixed in the guide groove, the concave surface of the rolling guide wheel is fitted together with the guide shaft, and the bottom of the rolling guide wheel is higher than the base plate.

[0015] The lower limb muscle strength comprehensive training system includes: a slide rail positioner comprising a positioner main seat, a shifting shaft, a fixed hinge shaft, a foot pedal rack, an intermediate connecting seat, a toothed block, and a compression spring; the positioner main seat has a longitudinal through hole and a transverse mounting hole communicating with the longitudinal through hole; the shifting shaft is inserted into the longitudinal through hole; a compression spring is fitted onto the upper part of the shifting shaft and installed together with the compression spring inside the positioner main seat; the bottom of the compression spring abuts against a step on the shifting shaft, and the top abuts against a step on the upper part of the longitudinal through hole; a rack structure is fixedly installed at the middle position of the shifting shaft; the foot pedal rack... The fixed hinge shaft is installed on the main seat of the locator. One end of the foot pedal rack with a gear structure is inserted into the transverse mounting hole. Both ends of the hinge shaft are installed in the hinge shaft holes on the two side walls of the transverse mounting hole. The foot pedal rack is rotatably fitted onto the fixed hinge shaft through the hinge shaft holes. The front part of the foot pedal rack has a gear structure that cooperates with the rack structure of the shifting shaft. One side of the intermediate connecting seat is fixedly connected to the main seat of the locator, and the other side is fixedly connected to the moving table in the slide rail mechanism. The lower part of the shifting shaft extends outside the main seat of the locator and the intermediate connecting seat, and a toothed block is fixed at its shaft end.

[0016] The lower limb muscle strength comprehensive training system includes: a waist and abdominal muscle strength training module installed on a base platform, comprising a support frame, a second damper, an L-shaped rocker arm, a back brace, and a back pressure roller. The support frame is fixed on the base platform at a position on one side of the seat plate. A rotatable rocker arm shaft is installed on the upper part of the support frame. The L-shaped rocker arm is fixed on the rocker arm shaft. A support plate is fixedly installed at one end of the L-shaped rocker arm near the rocker arm shaft. One end of the second damper is connected to the ear seat of the base platform, and the other end is hinged to the support plate. The other end of the upper crossbar of the L-shaped rocker arm extends towards the seat back and is higher than the seat back. A back brace and a back pressure roller are installed on it. The back pressure roller is sleeved on the upper crossbar. Two back braces are installed upright on the upper crossbar, and the back pressure roller is located between the two back braces.

[0017] The lower limb muscle strength comprehensive training system includes: a display module comprising a display position adjustment mechanism and a display; the display position adjustment mechanism comprising a connecting base, a support tube, a locator, an adjusting arm, a horizontal swing fine adjuster, and a vertical swing fine adjuster; wherein the connecting base is directly mounted and fixed on the front crossbeam of the base; one end of the support tube is fixedly connected to the connecting base, and the other end is hinged to the shaft end of the adjusting arm; the horizontal swing fine adjuster is hinged to the other end of the adjusting arm; one end of the vertical swing fine adjuster is hinged to the horizontal swing fine adjuster, and the other end is fixed to the display.

[0018] The lower limb muscle strength comprehensive training system includes: a horizontal swing fine adjuster comprising a lower friction pad, a wear-resistant bushing, and a hinge shaft body; an adjusting arm with a shaft hole; a vertical shaft at the bottom of the hinge shaft body; a threaded hole at the bottom of the vertical shaft; the vertical shaft is fitted into the lower friction pad and then inserted into the wear-resistant bushing; a locking bolt is inserted upwards from the bottom of the shaft hole into the threaded hole of the vertical shaft and tightened in conjunction with a washer; a horizontal through hole is opened at the rear of the hinge shaft body; the two hinge ends of the vertical fine adjuster are installed on both sides of the horizontal through hole; the hinge shaft is inserted into the horizontal through hole from the opening of one hinge end and passes through the opening of the other hinge end, and is locked with a nut. Attached Figure Description

[0019] Appendix Figure 1 This is a schematic diagram of the overall structure of the lower limb muscle strength comprehensive training system described in this invention;

[0020] Appendix Figure 2 This is a schematic diagram of the lower limb pedaling motion module of the present invention;

[0021] Appendix Figure 3 This is a schematic diagram of the foot pedal assembly structure of the present invention;

[0022] Appendix Figure 4 This is a schematic diagram of the seat back adjustment module of the present invention;

[0023] Appendix Figure 5 This is a schematic diagram of the seat sliding positioning module of the present invention;

[0024] Appendix Figure 6 This is a schematic diagram of the seat slide rail positioner structure of the present invention;

[0025] Appendix Figure 7 This is a schematic diagram of the abdominal muscle strength training module of the present invention;

[0026] Appendix Figure 8 This is a schematic diagram of the display adjustment module of the present invention;

[0027] Appendix Figure 9 This is a schematic diagram of the display angle fine-tuner structure of the present invention.

[0028] Icon labels:

[0029] 1. Base; 2. Lower limb pedaling exercise module; 3. Seat adjustment system; 4. Waist and abdominal muscle strength training module; 5. Display adjustment module; 11. Front crossbeam; 12. Middle longitudinal beam; 13. Platform base frame; 131. Base plate; 14. Platform cover plate; 15. Ear seat; 21. Foot pedal assembly; 211. Flat plate; 212. Foot pedal; 213. Straps; 214. Upper hinge seat; 215. Adjustment top rod; 216. Sliding swivel seat; 217. Fixed... 218. Position knob; 219. Lower hinge seat; 22. Ear plate; 23. Front swing arm; 24. Rear swing arm; 35. First damper; 36. Seat plate; 37. Armrest; 38. Front swing arm; 39. Front axle seat; 30. Rear swing arm; 31. Rear axle seat; 32. Double-ended tie rod; 33. Upper backrest; 34. Hinge ear seat; 35. Slide rod hinge seat; 36. Flip hinge; 37. Lower backrest; 38. Slide rod; 39. 2. Positioning knob; 343. Slide rod rotating sleeve; 344. Rotating sleeve hinge seat; 35. Moving column; 36. Fixed column; 37. Slide rail positioner; 371. Positioner main seat; 372. Shifting shaft; 373. Fixed hinge shaft; 374. Foot pedal rack; 375. Intermediate connecting seat; 376. Gear block; 377. Compression spring; 38. Slide rail mechanism; 381. Linear guide rail seat; 382. Rack; 383. Guide shaft; 384. Moving table; 385. Roller 41. Guide wheel; 42. Support frame; 43. Second damper telescopic cylinder; 44. Second damper telescopic shaft; 45. Rocker arm pivot; 46. L-shaped rocker arm; 47. Backrest rod; 58. Backrest roller; 59. Connecting seat; 50. Support upright; 51. Positioner; 52. Adjusting arm; 53. Horizontal swing fine adjuster; 54. Upper friction pad; 55. Lower friction pad; 55. Wear-resistant bushing; 56. Vertical swing fine adjuster; 57. Display. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-9 The present invention will be further described in detail with reference to embodiments. Similar parts in the accompanying drawings are indicated by the same reference numerals. Those skilled in the art should understand that the following detailed description is illustrative and not restrictive, and should not be construed as limiting the scope of protection of the present invention.

[0031] This invention provides a comprehensive lower limb muscle strength training system. When muscle strength training is required, users can choose to perform lower limb pedaling exercises or abdominal muscle strength training as needed to train the lower limb motor function muscles.

[0032] Specifically, such as Figure 1As shown, the present invention discloses a lower limb muscle strength comprehensive training system, which includes: a base 1, a lower limb pedaling exercise module 2, a seat adjustment system 3, a waist and abdominal muscle strength training module 4, and a display adjustment module 5; the base 1 is in contact with the ground; the lower limb pedaling exercise module 2, the seat adjustment system 3, the waist and abdominal muscle strength training module 4, and the display adjustment module 5 are all mounted on the base.

[0033] like Figure 2 As shown, the base 1 includes a front crossbeam 11, a middle longitudinal beam 12, and a base platform. The base platform includes a platform base frame 13 and a platform cover plate 14. The platform cover plate 14 is bolted to the platform base frame 13. The front crossbeam 11 is fixedly connected to the base platform through two parallel middle longitudinal beams 12. The display adjustment module 5 is fixed to one end of the front crossbeam 11. The lower limb pedaling exercise module 2 is installed on the middle longitudinal beam 12. The seat adjustment system 3 and the waist and abdominal muscle strength training module 4 are installed on the base platform.

[0034] like Figure 2 , Figure 3 As shown, the lower limb pedaling exercise module 2 has the same structure on both sides, enabling pedaling resistance movements with the left foot, right foot, and both feet. Taking the left side of the module as an example, the left side mainly includes: a foot pedal assembly 21, a front swing arm 22, a rear swing arm 23, and a first damper 24. The foot pedal assembly 21 includes a plate 211, a foot pedal 212, a strap 213, an upper hinge seat 214, an adjusting rod 215, a sliding rotating seat 216, a positioning knob 217, a lower hinge seat 218, and an ear plate 219. The two ends of the strap 213 are respectively connected to the upper sides of the foot pedal 212 for foot fixation during lower limb pedaling training. The lower end of the foot pedal 212 is hinged to one end of the plate 211. The lower hinge seat 218 is fixedly mounted on the plate 211, and the sliding rotating seat 216 is hinged to the lower hinge seat 218. One end of the adjusting rod 215 is fixedly mounted on the upper hinge seat 214 on the foot pedal 212. 4. The hinged connection is used, and the other end is slidably sleeved with the sliding rotating base 216. The adjusting rod 215 is provided with multiple positioning holes. The position of the adjusting rod 215 is fixed by the positioning knob 217 fixedly installed on the sliding rotating base 216, so as to realize the angle adjustment of the foot pedal 212 relative to the plate 211 to meet the comfort requirements of different trainees. Specifically, after the adjusting rod 215 slides to the appropriate position in the sliding rotating base 216, the positioning end of the positioning knob 217 is inserted into the corresponding positioning hole on the adjusting rod 215, so as to realize the angle adjustment of the foot pedal 212 relative to the plate 211.

[0035] Furthermore, the foot pedal assembly 21, the front swing arm 22, the rear swing arm 23, and the central longitudinal beam 12 constitute a four-bar linkage, forming a swing mechanism. The front swing arm 22 and the rear swing arm 23 have the same size and structure. The upper ends of the front swing arm 22 and the rear swing arm 23 are hinged to the ear plate 219 in the foot pedal assembly 21, and the lower ends of the front swing arm 22 and the rear swing arm 23 are hinged to the central longitudinal beam 12. One end of the first damper 24 is hinged to the rear swing arm 23, and the other end is hinged to the central longitudinal beam. The hinge point is located behind the rear swing arm 23. The damper 24 is used to adjust the magnitude of the motion resistance. During lower limb pedaling exercise training, the lower limb pedaling exercise module 2 is used in conjunction with the seat adjustment system 3. That is, the trainee sits on the seat and adjusts the height of the seat through the moving column 35 and the fixed column 36, and adjusts the relative front and rear positions of the seat and the base through the slide rail positioner 37 and the slide rail mechanism 38. The damping force of the first damper 24 can be adjusted according to the user's muscle strength level to conduct personalized resistance training. The first damper 24 is a sleeve-type damper, including a sleeve and a telescopic rod inserted into the sleeve.

[0036] like Figure 2 , Figure 4 As shown, the seat adjustment system 3 includes a seat position adjustment module and an armrest and backrest adjustment module. The seat position adjustment module includes a seat, a seat lifting mechanism, and a seat sliding mechanism. The seat lifting mechanism consists of a moving column 35 and a fixed column 36. Using a conventional electric drive, the moving column 35 can move up and down relative to the fixed column 36, achieving relative height adjustment between the seat and the base 1. The seat sliding mechanism includes a slide rail positioner 37 and a slide rail mechanism 38. The lower part of the fixed column 36 is fixed to the slide rail mechanism 38. By operating the slide rail positioner 37, the relative front-to-back position adjustment between the seat and the base 1 can be achieved. Trainees use the seat adjustment system 3 in conjunction with the lower limb pedaling exercise module 2 or the abdominal muscle strength training module 4 to conduct personalized exercise training.

[0037] Furthermore, the armrest and backrest adjustment module includes: a seat plate 31, an armrest 32, an upper backrest 33, and a lower backrest 34, as shown below. Figure 4As shown, the seat plate 31 is fixed to the top of the moving column 35, and its height relative to the base frame is adjustable. Two armrests 32 are respectively installed on both sides of the seat plate 31. The lower backrest 34 is installed at the rear of the seat plate 31, and the upper backrest 33 is installed on the upper part of the lower backrest 34 through multiple hinges 333. The relative height between the armrests 32 and the seat plate is adjustable, and the relative angle between the upper backrest 33 and the lower backrest 34 is adjustable. Taking one armrest as an example, the armrest 32, the seat plate 31, the front swing rod 321, and the rear swing rod 323 form a parallelogram mechanism. One end of the front swing rod 321 is hinged to the armrest 31, and the other end is hinged to the front axle seat 322 fixed below the seat plate 31. One end of the rear swing rod 323 is hinged to the armrest 31, and the other end is fixedly connected to one end of the rotating shaft of the rear axle seat 324 fixed below the seat plate 31. When the parallelogram mechanism moves, the armrest 32 can be laid flat to be level with the seat plate 31.

[0038] The upper backrest 33 is connected to the two armrests through a reclining angle adjustment mechanism. Taking the left reclining angle adjustment mechanism as an example, it includes a hinge seat 331, a rotating arm 325, a double-headed pull rod 326, and a rear axle seat 324 to realize the reclining angle adjustment of the upper backrest 33. The hinge seat 331 is fixed on the upper backrest 33. The upper end of the double-headed pull rod 326 is hinged to the hinge seat 331, and the lower end is hinged to the upper end of the rotating arm 325. The lower end of the rotating arm 325 is fixedly connected to the other end of the rotating shaft of the rear axle seat 324.

[0039] An angle adjustment and positioning mechanism is provided between the upper backrest 33 and the lower backrest 34, including the upper backrest 33, the lower backrest 34, the slide rod 341, the positioning knob 342, the slide rod sleeve 343, and the sleeve hinge seat 344. The slide rod hinge seat 332 is fixedly mounted on the upper backrest 33, and the sleeve hinge seat 344 is fixedly mounted on the lower backrest 34. The slide rod sleeve 343 is hinged to the sleeve hinge seat 344, and the positioning knob 342 is mounted on the slide rod sleeve 343. One end of the slide rod 341 is hinged to the slide rod hinge seat 332, and the other end is sleeved on the slide rod sleeve 343. The positioning knob 342 is operated to adjust the position. This allows the slide rod 341 to slide and be positioned relative to the slide rod rotating sleeve 343, thereby achieving the adjustment and positioning of the angle between the upper backrest 33 and the lower backrest 34. After the slide rod 341 slides to the appropriate position in the slide rod rotating sleeve 343, the end of the positioning knob 342 is inserted into the corresponding positioning hole on the slide rod 341 to achieve angle adjustment and positioning. When the trainee performs abdominal muscle strength training, the armrest 32 needs to be laid flat at the same height as the seat board 31, and at the same time the upper backrest 33 is flipped backward to adjust the angle between the upper backrest 33 and the lower backrest 34 to the minimum, that is, to be in the lowest position behind the backrest.

[0040] The rear swing arm 323 of the armrest adjustment part is fixedly connected to the rotating arm 325 of the backrest adjustment mechanism through the rotating shaft of the rear axle seat 324. Thus, while adjusting the height of the armrest 32, the upper backrest 33 can be flipped backward at the same time, so as to achieve the purpose of synchronous adjustment of the height of the armrest 32 and the flip angle of the upper backrest 33. When the armrest 32 is lowered to the same height as the seat 31, it is in the lowest position. At this time, the upper backrest 33 is also flipped to the lowest position behind the backrest, which helps the trainee to quickly switch from lower limb pedaling exercise training to waist and abdominal muscle strength exercise training.

[0041] Furthermore, such as Figure 2 , Figure 5 As shown, the seat sliding mechanism includes a slide rail positioner 37 and a slide rail mechanism 38; the slide rail mechanism 38 mainly includes a linear guide rail seat 381, a rack 382, ​​a guide shaft 383, a moving platform 384, and rolling guide wheels 385; the slide rail positioner 37 is fixedly installed at the front end of the moving platform 384, the fixed column 36 of the seat lifting mechanism is fixed at the rear end of the moving platform 384, and two rolling guide wheels 385 are installed on each side of the bottom of the moving platform 384; the platform base frame 13 also includes a base plate 131, a linear guide rail seat 381, and a rack 382, ​​both of which are detachably and fixedly installed (e.g., bolted) on the base plate 131 at the bottom of the platform base frame 13; the linear guide rail seat 381 has a U-shaped cross section, with fixed sections on both sides. The linear guide seat 381 is fixed on the base plate 131. A gap is left between the top plate of the linear guide seat 381 and the base plate 131 for mounting the rack 382. A long slot is opened on the top plate of the linear guide seat 381. The rack 382 is located directly below the top plate of the linear guide seat 381 and opposite to the long slot on the linear guide seat 381. Each of the two side walls of the linear guide seat 381 has a long guide groove with an arc-shaped cross section. A guide shaft 383 is fixedly welded in the guide groove. The concave surface of the rolling guide wheel 385 is installed together with the guide shaft 383, so that the moving table 384 can slide linearly along the linear guide seat 381, realizing the relative front and rear position adjustment between the seat and the base 1. The bottom of the rolling guide wheel 385 is higher than the base plate 131 to avoid friction with the base plate 131.

[0042] Furthermore, such as Figure 6As shown, the slide rail positioner 37 mainly includes a positioner main seat 371, a shifting shaft 372, a fixed hinge shaft 373, a foot pedal rack 374, an intermediate connecting seat 375, a toothed block 376, and a compression spring 377. The positioner main seat 371 is provided with a longitudinal through hole and a transverse mounting hole communicating with the longitudinal through hole. The shifting shaft 372 is inserted into the longitudinal through hole, and a compression spring 377 is fitted on the upper part of the shifting shaft 372. The compression spring 377 is installed together with the compression spring 377 on the positioner main seat 371. Internally, the bottom of the compression spring 377 abuts against the step on the shift shaft 372, and the top abuts against the step on the upper part of the longitudinal through hole; a rack structure is fixedly installed in the middle of the shift shaft 372; the foot pedal rack 374 is installed on the positioner main seat 371 through the fixed hinge shaft 373, one end of the foot pedal rack 374 with a gear tooth structure is inserted into the transverse mounting hole, and both ends of the hinge shaft 373 are installed in the hinge shaft holes on the two side walls of the transverse mounting hole, and the foot pedal rack 374 is connected to the hinge shaft hole on the hinge shaft hole. The shaft hole is rotatably fitted onto the fixed hinge shaft 373. The front of the foot pedal rack 374 has a gear structure that meshes with the rack structure of the shift shaft 372. One side of the intermediate connecting seat 375 is fixedly connected to the positioner main seat 371, and the other side is fixedly connected to the moving table 384 in the slide rail mechanism 38. The lower part of the shift shaft 372 extends outside the positioner main seat 371 and the intermediate connecting seat 375, and a toothed block 376 is fixed at its shaft end. Before operating the slide rail positioner 37... The toothed block 376 is engaged with the rack 382 in the slide rail mechanism 38, and the seat is positioned relative to the base. When operating the slide rail positioner 37, the shift shaft 372 and the toothed block 376 can be moved upward together by the outer end of the foot pedal rack 374, so that the toothed block 376 is separated from the rack 382 in the slide rail mechanism 38, which can push the seat to adjust its front and back position. Then, the foot pedal rack 374 can be released to reposition the seat back and forth.

[0043] like Figure 7As shown, the abdominal muscle strength training module 4 is installed on the base platform in the base 1, and mainly includes a support frame 41, an L-shaped rocker arm 45, a back support bar 46, a back pressure roller 47, and a second damper. The support frame 41 is fixed on the platform cover plate 14 of the base platform and is located on one side of the seat plate 31. A fixed rocker arm shaft 44 is installed on the upper part of the support frame 41. The lower end of the L-shaped rocker arm 45 is sleeved on the rocker arm shaft 44. A support plate is fixedly installed at the lower end of the L-shaped rocker arm 45 near the rocker arm shaft 44. The second damper includes a second damper. The telescopic cylinder 42 and the second damper telescopic shaft 43 are hinged at one end to the ear seat 15 fixedly mounted on the base platform, and at the other end to the support plate at the lower end of the L-shaped rocker arm 45. Thus, the active rotation of the L-shaped rocker arm 45 drives the extension and retraction of the damper. The other end of the upper crossbar of the L-shaped rocker arm 45 extends towards the seat back and is higher than the seat back. It is equipped with a backrest pull rod 46 and a backrest pressure roller 47. The backrest pressure roller 47 is fitted onto the upper crossbar. Two backrest pull rods 46 are mounted upright on the upper crossbar, and the backrest pressure roller 47 is positioned between the two backrest pull rods 46. During training, the backrest pull rods 46 are pulled with both hands, pressing the backrest pressure roller 47 against the back of the body. In a seated position, the active forward and backward movement of the waist and back achieves muscle strength training of the waist and abdomen. The intensity of the muscle strength training is set by adjusting the resistance of the damper.

[0044] When performing abdominal muscle strength training, it is necessary to use the seat adjustment system 3. First, flatten the armrest 32 and adjust the upper backrest 33 of the seat to the bottom of the lower backrest 34. Then, position the back pressure roller 47 of the L-shaped rocker arm 45 at its highest point. Adjust the height and fore-aft position of the seat so that the position of the back pressure roller 47 of the L-shaped rocker arm 45 is close to the back in a normal sitting posture. Then, perform abdominal muscle strength training.

[0045] like Figure 8 As shown, the display module 5 includes a display position adjustment mechanism and a display 57. The display position adjustment mechanism is connected and fixed on the base 1. The height and angle of the display 57 can be adjusted through the display position adjustment mechanism to meet the needs of trainees for visual feedback training.

[0046] The monitor position adjustment mechanism includes a connecting base 51, a support column 52, a positioner 53, an adjusting arm 54, a horizontal swing fine-tuner 55, and a vertical swing fine-tuner 56; wherein the connecting base 51 is directly mounted and fixed on the front crossbeam 11 of the base 1; one end of the support column 52 is fixedly connected to the connecting base 51, and the other end is hinged to one end of the adjusting arm 54; as shown Figure 9As shown, the horizontal swing fine adjuster 55 includes a lower friction pad 552, a wear-resistant bushing 553, and a hinge shaft body. The other end of the adjusting arm 54 has a shaft hole. The lower part of the hinge shaft body is a vertical shaft with a threaded hole at its bottom. After the vertical shaft is fitted into the lower friction pad 552, it is inserted into the wear-resistant bushing 553. A locking bolt is inserted upwards from the bottom of the shaft hole into the threaded hole of the vertical shaft and tightened in conjunction with the washer. Thus, the hinge shaft body can rotate left and right around the bushing 553. A horizontal through hole is opened at the rear of the hinge shaft body. The two hinge ends of the vertical fine adjuster 56 are installed on both sides of the horizontal through hole. The hinge shaft is inserted into the horizontal through hole from the opening at one hinge end and exits from the opening at the opening at the other hinge end, and is locked with a nut. Thus, the vertical fine adjuster 56 can rotate up and down around the hinge shaft.

[0047] The other end of the vertical swing fine adjuster 56, away from the hinge end, is fixedly connected to the display 57. The height of the display 57 can be adjusted by manually operating the positioner 53 to adjust the lifting height of the adjusting arm 54; the front and rear position of the display 57 can be adjusted by manually operating the positioner 53 (e.g., the handle bolt) and rotating the adjusting arm 54; and the small-range angle adjustment of the display screen can be achieved by manually operating the horizontal swing fine adjuster 55 and the vertical swing fine adjuster 56.

[0048] The monitor position adjustment mechanism enables comprehensive adjustment of the monitor's height, front-to-back distance, and screen angle, better meeting the needs of trainees for visual feedback muscle strength training.

[0049] The lower limb pedaling motion module 2 further includes two sets of angle sensors, which are located at the hinge positions of the front swing arm 22 and the middle longitudinal beam 12 in the left and right side swing arm mechanisms, respectively. The angle sensors can transmit the pedaling motion angle parameters in pedaling motion training to the display 57 in real time for visual feedback training and evaluation.

[0050] The abdominal muscle strength training module 4 further includes a set of angle sensors located at the rocker arm pivot 44 between the support frame 41 and the L-shaped rocker arm. The angle sensors can transmit the rocker arm movement angle parameters in the abdominal muscle strength training to the display 57 in real time for visual feedback training and evaluation.

[0051] In this invention, when the trainee is sitting in the chair for training, the seat adjustment system can be used to perform lower limb pedaling exercises separately (at this time, the armrest 32 is in the highest position, and the upper backrest 33 and the lower backrest 34 are flush and there is no angle tilting backward), or to perform waist and abdominal muscle strength training separately (at this time, the armrest 32 is adjusted to the lowest position, and the upper backrest 33 tilts backward at the maximum angle).

[0052] In summary, the present invention has the following outstanding features:

[0053] 1. It can meet the needs of trainees to carry out two types of muscle strength training on one device, including a lower limb pedaling exercise module and a waist and abdominal muscle strength training module. It can comprehensively train the lower limb muscle groups, waist and abdominal muscle groups, and can effectively meet the training needs of those with weak lower limb muscle strength.

[0054] 2. The seat position adjustment module allows trainees of different heights to adjust the seat height and fore-aft position; the armrest and backrest adjustment modules allow for simultaneous adjustment of the armrest height and the backrest tilt angle, facilitating the transition from lower limb pedaling exercises to abdominal muscle training.

[0055] 3. The angle sensors in the lower limb pedaling exercise module and the waist and abdominal muscle strength training module transmit the detected motion angle parameters to the display module in real time, thereby controlling the visual feedback training system on the display. This increases the entertainment and goal-orientation of lower limb muscle strength training and significantly enhances the motivation for muscle strength training.

[0056] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A lower limb muscle strength training system, characterized in that... The system includes: a base, a lower limb pedaling motion module, a seat adjustment system, a lumbar and abdominal muscle strength training module, and a display adjustment module; the base is in contact with the ground; the lower limb pedaling motion module, seat adjustment system, lumbar and abdominal muscle strength training module, and display adjustment module are all mounted on the base; the lumbar and abdominal muscle strength training module is mounted on the base platform and includes a support frame, a second damper, an L-shaped rocker arm, a backrest pull rod, and backrest rollers; the support frame is fixed on the base platform at a position on one side of the seat plate, and a rotatable rocker arm shaft is mounted on the upper part of the support frame, the L-shaped rocker arm is fixed on the rocker arm shaft, a plate is fixedly installed at one end of the L-shaped rocker arm near the rocker arm shaft, and one end of the second damper is connected to the base. The seat platform is connected to the ear seat at one end and hinged to the support plate at the other end. The upper crossbar of the L-shaped rocker arm extends towards the seat back and is higher than the seat back. It is equipped with a backrest support rod and a backrest pressure roller. The backrest pressure roller is sleeved on the upper crossbar. Two backrest support rods are installed upright on the upper crossbar, and the backrest pressure roller is located between the two backrest support rods. The lower limb pedaling motion module further includes two sets of angle sensors, located at the hinge positions of the front swing arm and the middle longitudinal beam in the left and right side swing arm mechanisms, respectively. The angle sensors can transmit the pedaling motion angle parameters in pedaling motion training to the display in real time for visual feedback training and evaluation. The abdominal muscle strength training module further includes a set of angle sensors, located on the support plate. An angle sensor at the pivot point of the support frame and the L-shaped rocker arm transmits the rocker arm movement angle parameters during abdominal muscle strength training to the display in real time for visual feedback training and evaluation. The display module includes a display position adjustment mechanism and a display. The display position adjustment mechanism includes a connecting seat, a support tube, a positioner, an adjusting arm, a horizontal swing fine-tuner, and a vertical swing fine-tuner. The connecting seat is directly mounted and fixed to the front crossbeam of the base. One end of the support tube is fixedly connected to the connecting seat, and the other end is hinged to the shaft end of the adjusting arm. The horizontal swing fine-tuner is hinged to the other end of the adjusting arm. One end of the vertical swing fine-tuner is hinged to the horizontal swing fine-tuner, and the other end is fixed to the display. The horizontal swing fine adjuster includes a lower friction pad, a wear-resistant bushing, and a hinge shaft body. The adjusting arm has a shaft hole. The lower part of the hinge shaft body is a vertical shaft with a threaded hole at the bottom. After the vertical shaft is fitted into the lower friction pad, it is inserted into the wear-resistant bushing. The locking bolt is inserted upward from the bottom of the shaft hole into the threaded hole of the vertical shaft and tightened in conjunction with the washer. The rear part of the hinge shaft body has a horizontal through hole. The two hinge ends of the vertical fine adjuster are installed on both sides of the horizontal through hole. The hinge shaft is inserted into the horizontal through hole from the opening of one hinge end and passes out from the opening of the other hinge end, and is locked with a nut. The seat sliding mechanism includes a slide rail positioner and a slide rail mechanism. The slide rail positioner includes a positioner main seat, a shifting shaft, a fixed hinge shaft, a foot pedal rack, an intermediate connecting seat, a toothed block, and a compression spring.The positioner main seat has a longitudinal through hole and a transverse mounting hole communicating with the longitudinal through hole. The shifting shaft is inserted into the longitudinal through hole. A compression spring is fitted on the upper part of the shifting shaft and installed inside the positioner main seat together with the compression spring. The bottom of the compression spring abuts against the step on the shifting shaft, and the top abuts against the step on the upper part of the longitudinal through hole. A rack structure is fixedly installed in the middle of the shifting shaft. The foot pedal rack is installed on the positioner main seat through a fixed hinge shaft. One end of the foot pedal rack with a gear tooth structure is inserted into the transverse mounting hole. Both ends of the hinge shaft are installed in the hinge shaft holes on the two side walls of the transverse mounting hole. The foot pedal rack is rotatably fitted onto the fixed hinge shaft through the hinge shaft holes on it. The front part of the foot pedal rack has a gear structure that cooperates with the rack structure of the shifting shaft. One side of the intermediate connecting seat is fixedly connected to the positioner main seat, and the other side is fixedly connected to the moving table in the slide rail mechanism. The lower part of the shifting shaft extends outside the positioner main seat and the intermediate connecting seat, and a toothed block is fixed at its shaft end. ;

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