Multi-axis angle-adjustable limb activity training support device

Abstract

This invention provides a multi-axis adjustable limb movement training support device, relating to the field of sports training equipment technology. The multi-axis adjustable limb movement training support device includes a base, a seat cushion on the inner side of the base, a fixed adapter platform at the right end, a backrest rotatably connected to the inner wall of the adapter platform, and pressing rods slidably connected to both ends. Two toothed rings are fixed to both ends of the inner wall of the backrest, and a toothed ring is fixed to the end of each pressing rod. A spring is provided on the outer side of the toothed ring. When the pressing rod is pressed, the toothed ring detaches from the toothed ring 2, unlocking it. A movable frame is slidably connected to both ends of the right side of the backrest, and laser correctors are provided on the outer side of the movable frame and the top side of the backrest. Through the linkage of four sets of mechanisms—a toothed ring quick-lock mechanism, a gear-tooth plate synchronous shoulder extension mechanism, a torsion spring pawl unidirectional resistance adjustment mechanism, and an arc groove disc offset resistance variation mechanism—a comprehensive training effect is achieved, including quick-adjustment and stable locking of the backrest, automatic shoulder width adaptation, adjustable rotational resistance, and progressive bending resistance.

Description

Technical Field

[0001] This invention relates to the field of sports training equipment technology, specifically to a multi-axis angle-adjustable limb movement training support device. Background Technology

[0002] Limb movement training support devices are widely used in upper limb muscle strength training, joint range of motion recovery, and motor function rehabilitation. Most existing limb training devices use a fixed frame with simple angle adjustment knobs, allowing users to sit on a cushion and perform basic movements such as arm flexion and abduction.

[0003] The existing technology has the following shortcomings: First, the backrest angle adjustment mechanism mostly adopts a manual knob locking structure. Adjustment requires both hands to simultaneously loosen the knob, adjust the angle, and then tighten it again, making the operation cumbersome. Furthermore, the knob is prone to loosening due to vibration during training, leading to sudden changes in the backrest angle and affecting training safety. Second, the spacing of the movable frame is fixed, failing to automatically adapt to different users' shoulder widths. Users with narrow shoulders may experience excessive arm abduction, potentially causing shoulder joint strain, while users with wide shoulders are limited by the spacing of the movable frame, resulting in poor adaptability. Third, the rotational resistance of the shoulder rotation frame is provided by a fixed damper, and the resistance level is not adjustable. This makes it impossible to customize the training load according to the user's rehabilitation stage and muscle strength level, and it lacks one-way locking protection. When the user reaches exhaustion during training, the arm may suddenly drop, causing joint damage. Fourth, the flexion resistance of the limb plate is provided by a fixed spring, resulting in a single, unadjustable resistance curve. This prevents progressive resistance training. Excessive resistance in the early stages of training can easily cause muscle strain, while insufficient resistance in the later stages fails to achieve muscle strengthening effects, limiting the training effect. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a multi-axis angle-adjustable limb activity training support device, which solves the problems of existing devices such as cumbersome backrest adjustment that is prone to loosening, poor shoulder width adaptability, fixed rotational resistance without unidirectional locking, and single, non-adjustable bending resistance.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a multi-axis angle adjustable limb activity training support device, including a base, a cushion provided on the inner side of the base, a fixed adapter platform at the right end, a backrest plate rotatably connected to the inner wall of the adapter platform, and a pressing rod slidably connected to both ends, two toothed rings fixed at both ends of the inner wall of the backrest plate, a toothed ring fixed at the end of the pressing rod, a spring provided on the outer side of the toothed ring, and the pressing rod being pressed causes the toothed ring 1 to disengage from the toothed ring 2 and unlock;

[0006] The right side of the backrest panel is slidably connected to the movable frame at both ends. A laser corrector is provided on the outer side of the movable frame and the top side of the backrest panel. The opposite ends of the movable frame are slidably connected to the connecting frame. The connecting frame is slidably connected to the right end of the backrest panel. Motor 2 and Motor 1 are fixed on both sides of the top of the backrest panel respectively. The drive ends of Motor 1 and Motor 2 are respectively fixed to the transmission rod and transmission screw 2. The transmission screw 2 is threaded to the connecting frame. The transmission rod is slidably connected to the adapter ring. The bottom end of the adapter ring is rotatably connected to the top and outer wall of the connecting frame and a gear is fixed. The two ends of the gear mesh with tooth plates. The bottom ends of the tooth plates are respectively fixed to the movable frame.

[0007] The opposite ends of the mobile frame are rotatably connected to the shoulder frame. The shoulder frame is rotatably connected in sequence to limb plate one, limb plate two, and hand plate. A rotating shaft is provided between adjacent plates, and a turntable is fixed at the top of the rotating shaft. A transmission screw one is rotatably connected inside the turntable. The transmission screw one is threadedly connected to a transmission block. An arc groove plate is fixed at the top of the transmission block. A transfer wheel is sleeved on the inner side of the arc groove plate. An extension frame is fixed on the outer wall of the transfer wheel. A connecting rod is sleeved on the extension frame via spring three. Limb plate one and limb plate two are fixed at the end of the connecting rod.

[0008] Preferably, the adapter is a U-shaped frame structure, with sliding holes provided on both the front and rear end walls of the adapter. The pressing rod passes through the sliding holes and slides axially along the sliding holes. The toothed surfaces of the first toothed ring and the second toothed ring are arranged opposite each other. The spring is sleeved on the outer wall of the pressing rod and located between the first toothed ring and the inner wall of the adapter. The two ends of the first spring abut against the side of the first toothed ring and the inner wall of the adapter, respectively. A pressing cap is provided on the outer end of the pressing rod.

[0009] Preferably, the transmission rod is a polygonal prism structure, and the inner wall of the adapter ring is provided with a polygonal hole that matches the outer wall of the transmission rod. The adapter ring slides along the axial direction of the transmission rod and rotates synchronously with the transmission rod. The gear is a cylindrical spur gear, and the two tooth plates are located on the front and rear sides of the gear and mesh with the gear. The length direction of the tooth plates is consistent with the sliding direction of the moving frame. The moving frame is slidably connected to the vertical guide rail opened on the right side of the backrest plate by a slider.

[0010] Preferably, the second transmission screw is arranged vertically, the connecting frame is a U-shaped frame, the inner wall of the connecting frame beam has a threaded hole that matches the second transmission screw, the ends of the two side arms of the connecting frame are slidably connected to the opposite ends of the two movable frames, the movable frames slide along the horizontal direction of the side arms of the connecting frame, the right end of the backrest plate has a vertical guide groove, and the back of the connecting frame beam has a guide block that fits into the vertical guide groove.

[0011] Preferably, the first rotating shaft is fixedly connected to the shoulder frame, and the second rotating shaft is rotatably connected to the inner wall of the fixed ring via a bearing. One opposite end of the fixed ring is fixed to the inner wall of the movable frame. Pin holes are provided on the opposite end faces of both the first and second rotating shafts. A locking pin passes through both pin holes to fix the first and second rotating shafts together. When the locking pin is pulled out, the first and second rotating shafts rotate relative to each other. The torsion spring is a spiral spring structure, and its outer end is fixed to the outer wall of the second rotating shaft. The inner end is fixedly connected to the transmission column. A ratchet plate is fixedly connected to one end of the transmission column. The ratchet plate is disc-shaped and has one-way ratchet teeth on its outer periphery. A pawl matching the ratchet teeth is provided at the bottom end of the pawl rod. The pawl is in close contact with the outer diameter of the ratchet plate. Two springs are sleeved on the outer wall of the pawl rod and located between the outer wall of the receiving shell and the shoulder of the pawl rod. The receiving shell is fixed to one end of the fixed ring. A pointer plate is rotatably connected to the outer end face of the receiving shell. The pointer plate is fixedly connected to the ratchet plate.

[0012] Preferably, the arc-groove disk is disc-shaped with an arc-shaped groove on its top surface. The radius of curvature of the arc-shaped groove gradually changes from one end to the other. The adapter wheel is fitted into the arc-shaped groove and rolls along the arc-shaped groove. The extension frame is an L-shaped rod structure. One end of the extension frame is fixedly connected to the wheel axle of the adapter wheel. The other end of the extension frame has a sleeve hole. The connecting rod passes through the sleeve hole. The spring is sleeved on the outer wall of the connecting rod and located between the extension frame and the end shoulder of the connecting rod. The bottom of the transmission block is provided with a guide boss that fits into the guide groove on the top surface of the turntable.

[0013] Preferably, a gathering strap is fixed to the bottom side of one opposite end of the limb plate one, the limb plate two, and the hand plate. The gathering strap is an elastic webbing, and a buckle is fixedly connected to the free end of the gathering strap.

[0014] Each of the limb plate one, the limb plate two, and the hand plate has an assembly shell fixed to one of their opposite top ends. The assembly shell is a rectangular hollow shell with its opening facing the direction of the gathering strap. A locking shell is fitted into the inner wall of the assembly shell. The locking shell slides along the axial direction of the assembly shell. A spring four is located between the inner wall of the assembly shell and the locking shell. The spring four pushes the locking shell to move towards the opening of the assembly shell. The inner wall of the locking shell has a locking groove that matches the buckle.

[0015] Preferably, the laser corrector is a crosshair laser projector. The laser corrector on the top side of the backrest projects a vertical reference line, and the laser corrector on the outside of the moving frame projects a horizontal reference line. The projection lines of the two sets of laser correctors intersect to form a body shape calibration grid.

[0016] A multi-axis angle-adjustable limb movement training method includes the following steps:

[0017] Step S1: Press the pressing rod to disengage the toothed ring 1 from the toothed ring 2, adjust the backrest to the target angle, and then release the pressing rod. The spring 1 pushes the toothed ring 1 and the toothed ring 2 to re-engage and lock the backrest.

[0018] Step S2: Start the laser corrector to project the calibration grid, start the motor one according to the user's body shape, the transmission rod drives the gear to rotate through the adapter ring, the gear drives the two front and rear toothed plates to move in opposite directions, and the toothed plates drive the two moving frames to unfold synchronously to match the user's shoulder width;

[0019] Step S3: Start the second motor to drive the second transmission screw to rotate. The second transmission screw drives the connecting frame to rise and fall vertically along the backrest through a threaded connection. The connecting frame drives the movable frame to adjust to the target height.

[0020] Step S4: Rotating the pointer plate drives the torsion spring to tighten through the transmission column. The reaction force of the torsion spring is transmitted to the second rotating shaft and the first rotating shaft, increasing the rotational resistance of the shoulder frame to the target value. The pawl lever engages with the ratchet plate under the action of the second spring to achieve one-way locking.

[0021] Step S5: Rotate the first transmission screw to drive the transmission block to move along the top surface of the turntable. The transmission block drives the arc groove disk to shift. When the arc groove disk rotates, the transfer wheel rolls along the arc groove and changes the bending resistance of the first limb plate and the second limb plate through the extension frame and the connecting rod.

[0022] Step S6: Place the user's arm on the limb plate one, the limb plate two, and the hand plate, pull the strap to insert the buckle into the locking shell to fix the limb, and the user performs multi-axis limb movement training.

[0023] Preferably, in step S4, when the shoulder frame needs to rotate in the opposite direction, the pawl bar is pulled upward to compress the spring, causing the pawl to disengage from the ratchet plate, and the shoulder frame rotates freely in both directions;

[0024] In step S5, the greater the offset of the arc groove disk, the greater the change in traction force on the extension frame when the adapter wheel rolls, and the wider the adjustment range of the limb plate bending resistance. During the training process, the laser corrector continuously projects a calibration grid to monitor whether the user's body position is off in real time.

[0025] Working principle: This device uses four sets of mechanical mechanisms working together. The first set is the backrest angle quick lock mechanism. When the pressing rod is pressed, it drives the toothed ring 1 to move axially and compress the spring 1, so that the toothed ring 1 and the toothed ring 2 disengage. The backrest is unlocked and the user can rotate the backrest to the target angle. After releasing the pressing rod, the spring 1 returns to its original position and pushes the toothed ring 1 and the toothed ring 2 to re-engage at the new angle. The backrest is locked. The tooth pitch of the toothed ring determines the minimum division of the angle adjustment.

[0026] The second group is the shoulder width matching and height adjustment mechanism of the mobile frame. Motor 1 drives the transmission rod to rotate, and the transmission rod drives the adapter ring to rotate synchronously through the polygonal hole. The adapter ring drives the gear to rotate, and the gear drives the front and rear toothed plates to move in opposite directions in the horizontal direction. The toothed plates drive the two mobile frames to expand or retract synchronously to match the user's shoulder width. Motor 2 drives the transmission screw 2 to rotate, and drives the connecting frame to rise and fall vertically along the backrest through the threaded transmission. The connecting frame drives the mobile frame to rise and fall synchronously through the dovetail guide rail to achieve height adjustment. The adapter ring slides along the axis of the transmission rod when the connecting frame rises and falls and always remains circumferentially fixed.

[0027] The third group is the shoulder frame rotation resistance adjustment mechanism. When the pointer plate is rotated, it drives the ratchet plate and the transmission column to rotate synchronously. The transmission column drives the inner end of the torsion spring to be wound and tightened. The reaction force of the torsion spring is transmitted to the second rotating shaft through the outer end. The second rotating shaft drives the first rotating shaft and the shoulder frame through the locking pin, which increases the rotation resistance of the shoulder frame. The larger the rotation angle of the pointer plate, the higher the tension of the torsion spring and the greater the resistance. The pawl bar is engaged with the ratchet plate in one direction under the action of the second spring to prevent the pointer plate from automatically rotating due to the reaction force of the torsion spring. Pulling the pawl bar to disengage from the ratchet plate allows for free rotation in both directions.

[0028] The fourth group is the limb plate bending resistance adjustment mechanism. When the limb plate bends, it drives the linkage to move. The linkage pulls the extension frame through spring three. The extension frame drives the transfer wheel to roll along the arc groove of the arc groove plate. The curvature radius of the arc groove gradually changes, causing the distance between the transfer wheel and the center of the turntable to change when the transfer wheel rolls. This causes the traction force of the extension frame to change, thus changing the bending resistance of the limb plate. Rotating the transmission screw one drives the transmission block to offset the arc groove plate radially along the turntable, changing the position of the arc groove relative to the center of the turntable. This changes the lever arm and the amplitude of the traction force change when the transfer wheel rolls. The greater the offset of the arc groove plate, the wider the resistance adjustment range. The four groups of mechanisms work together. The laser corrector projects a calibration grid to assist the user in adjusting their body position, and the fascia quickly fixes the limbs. Together, they form a complete training support solution with multi-axis adjustable angles.

[0029] This invention provides a multi-axis angle-adjustable limb movement training support device. It has the following beneficial effects:

[0030] 1. This invention uses a pressing rod to disengage the toothed ring 1 from the toothed ring 2 to release the lock, and the spring 1's restoring force pushes the toothed ring to re-engage, thus achieving a quick one-handed adjustment and reliable locking effect for the backrest angle.

[0031] 2. This invention uses a motor to drive a transmission rod, which in turn drives a gear to rotate via an adapter ring. This, combined with the fixed connection between the gear plate and the moving frame, drives the two moving frames to move synchronously in opposite directions, thus achieving the effect of automatically matching the spacing between the moving frames to the shoulder width of different users.

[0032] 3. This invention achieves stepless adjustment of the rotational resistance of the shoulder frame and provides training safety protection by rotating the pointer plate to tighten the torsion spring through the transmission column, thereby changing the reaction force, and cooperating with the pawl rod to lock the ratchet plate in one direction.

[0033] 4. This invention uses the rotation of the transmission screw to drive the transmission block, causing the arc groove plate to shift. In conjunction with the transfer wheel rolling along the arc groove, the traction force of the extension frame on the connecting rod is changed, thereby achieving precise adjustment of the bending resistance of the limb plate to realize the progressive resistance training effect. Attached Figure Description

[0034] Figure 1 This is a perspective view of the present invention;

[0035] Figure 2 This is a half-sectional view of the base of the present invention;

[0036] Figure 3 This is a half-sectional view of the movable frame of the present invention;

[0037] Figure 4 This is a half-sectional view of the shoulder frame of the present invention;

[0038] Figure 5 This is a half-sectional view of the fixing ring of the present invention;

[0039] Figure 6 This is a half-sectional view of the housing shell of the present invention;

[0040] Figure 7 This is a half-sectional view of the gathering band of the present invention;

[0041] Figure 8 This is a half-sectional view of the limb plate of the present invention;

[0042] Figure 9 This is a half-sectional view of the backrest panel of the present invention;

[0043] Figure 10 This is a half-sectional view of the connecting frame of the present invention;

[0044] Figure 11 This is a half-sectional view of the adapter platform of the present invention.

[0045] The components include: 1. Base; 2. Transfer platform; 3. Backrest panel; 4. Moving frame; 5. Shoulder frame; 6. Limb plate one; 7. Limb plate two; 8. Hand plate; 9. Laser orthosis; 10. Connecting frame; 11. Turntable; 12. Arc groove plate; 13. Transfer wheel; 14. Extension frame; 15. Connecting rod; 16. Gathering strap; 17. Assembly shell; 18. Locking shell; 19. Fixing ring; 20. Reception shell; 21. Finger... 21. Needle plate; 22. Rotating shaft one; 23. Rotating shaft two; 24. Locking pin; 25. Torsion spring; 26. Racket plate; 27. Transmission column; 28. Pawl rod; 29. ​​Transmission screw one; 30. Transmission block; 31. Motor one; 32. Motor two; 33. Transmission screw two; 34. Transmission rod; 35. Adapter ring; 36. Gear; 37. Tooth plate; 38. Pressing rod; 39. Face tooth ring one; 40. Face tooth ring two. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Example:

[0048] like Figure 1-11 As shown, this embodiment of the invention provides a multi-axis angle-adjustable limb activity training support device, including a base 1, a seat cushion on the inner side of the base 1, a fixed adapter platform 2 at the right end, a backrest plate 3 rotatably connected to the inner wall of the adapter platform 2, and pressing rods 38 slidably connected to both ends. Two toothed rings 40 are fixed to both ends of the inner wall of the backrest plate 3, and a toothed ring 39 is fixed to the end of the pressing rod 38. A spring is provided on the outer side of the toothed ring 39. When the pressing rod 38 is pressed, the toothed ring 39 disengages from the toothed ring 40. 40 Unlock. The adapter 2 has a U-shaped frame structure. The front and rear end walls of the adapter 2 are provided with sliding holes. The pressing rod 38 passes through the sliding hole and slides along the axis of the sliding hole. The toothed ring 39 and the toothed ring 40 are arranged opposite to each other. A spring is set on the outer wall of the pressing rod 38 and is located between the toothed ring 39 and the inner wall of the adapter 2. The two ends of the spring abut against the side of the toothed ring 39 and the inner wall of the adapter 2, respectively. A pressing cap is provided on the outer end of the pressing rod 38.

[0049] The right ends of the backrest panel 3 are slidably connected to the movable frame 4. Laser straighteners 9 are installed on the outer side of the movable frame 4 and the top side of the backrest panel 3. The opposite ends of the movable frame 4 are slidably connected to the connecting frame 10. The connecting frame 10 is slidably connected to the right end of the backrest panel 3. Motor 2 32 and Motor 1 31 are fixed to the top two sides of the backrest panel 3, respectively. The drive ends of Motor 1 31 and Motor 2 32 are respectively fixed to the transmission rod 34 and the transmission screw 2 33. The transmission screw 2 33 is threaded to the connecting frame 10. The transmission rod 34 is slidably connected to the adapter ring 35. The bottom end of the adapter ring 35 is rotatably connected to the top end and outer wall of the connecting frame 10, and a gear 36 is fixed. The two ends of the gear 36 mesh with the toothed plates 37. The bottom ends of the toothed plates 37 are respectively fixed to the movable frame 4. The transmission rod 34 has a polygonal prism structure. The inner wall of the adapter ring 35 has a polygonal hole that matches the outer wall of the transmission rod 34. The adapter ring 35 slides along the axial direction of the transmission rod 34 and rotates synchronously with the transmission rod 34. The gear 36 is a cylindrical spur gear. Two toothed plates 37 are located on the front and rear sides of gear 36 and mesh with gear 36. The length direction of toothed plates 37 is consistent with the sliding direction of moving frame 4. Moving frame 4 is slidably connected to the vertical guide rail opened on the right side of back panel 3 by a slider. Transmission screw 2 33 is arranged vertically. Connecting frame 10 is a U-shaped frame. The inner wall of the crossbeam of connecting frame 10 is provided with threaded holes that match transmission screw 2 33. The ends of the two arms of connecting frame 10 are slidably connected to the opposite ends of two moving frames 4 respectively. Moving frame 4 slides horizontally along the side arms of connecting frame 10. A vertical guide groove is opened at the right end of back panel 3. A guide block is set on the back of the crossbeam of connecting frame 10 and is embedded in the vertical guide groove. Laser corrector 9 is a cross-shaped laser projector. Laser corrector 9 on the top side of back panel 3 projects a vertical reference line. Laser corrector 9 on the outside of moving frame 4 projects a horizontal reference line. The projection lines of the two sets of laser correctors 9 intersect to form a body shape calibration grid.

[0050] The movable frame 4 is rotatably connected to the shoulder rotating frame 5 at its opposite end. Within the shoulder rotating frame 5, limb plate 6, limb plate 7, and hand plate 8 are rotatably connected in sequence. A rotating shaft is provided between adjacent plates, and a turntable 11 is fixed to the top of the rotating shaft. A transmission screw 29 is rotatably connected within the turntable 11. The transmission screw 29 is threadedly connected to a transmission block 30. An arc-groove disc 12 is fixed to the top of the transmission block 30. An adapter wheel 13 is fitted inside the arc-groove disc 12. An extension frame 14 is fixed to the outer wall of the adapter wheel 13. A connecting rod 15 is fitted inside the extension frame 14 via three springs. The end of the connecting rod 15 is fixed to limb plate 6 and limb plate 7. The rotating shaft 22 is connected to the shoulder rotating frame 5. The fixed connection is achieved by rotating shaft 23 rotatably connected to the inner wall of fixed ring 19 via bearings. One end of fixed ring 19 is fixed to the inner wall of movable frame 4. Pin holes are provided on the opposite end faces of rotating shaft 22 and rotating shaft 23. Locking pin 24 passes through both pin holes to fix rotating shaft 22 and rotating shaft 23. When locking pin 24 is pulled out, rotating shaft 22 and rotating shaft 23 rotate relative to each other. Torsion spring 25 is a spiral spring structure. The outer end of torsion spring 25 is fixed to the outer wall of rotating shaft 23, and the inner end of torsion spring 25 is fixedly connected to transmission column 27. A ratchet plate 26 is fixedly connected to one end of transmission column 27. The ratchet plate 26 is disc-shaped with one-way ratchet teeth on its outer periphery. The bottom end of the pawl shank 28 is provided with a pawl that matches the ratchet teeth. The pawl is in close contact with the outer diameter of the ratchet plate 26. Two springs are sleeved on the outer wall of the pawl shank 28 and located between the outer wall of the housing 20 and the shoulder of the pawl shank 28. The housing 20 is fixed to one end of the fixing ring 19. The outer end face of the housing 20 is rotatably connected to the pointer plate 21. The pointer plate 21 is fixedly connected to the ratchet plate 26. The arc groove plate 12 is disc-shaped with an arc groove on its top surface. The radius of curvature of the arc groove gradually changes from one end of the groove to the other end. The adapter wheel 13 is fitted into the arc groove. The extension frame 14 is an L-shaped rod structure. One end of the extension frame 14 is fixedly connected to the axle of the adapter wheel 13. The other end of the extension frame 14 is provided with a sleeve hole. The connecting rod 15 passes through the sleeve hole. The spring 3 is sleeved on the outer wall of the connecting rod 15 and located between the extension frame 14 and the end shoulder of the connecting rod 15. The bottom of the transmission block 30 is provided with a guide boss that fits into the guide groove on the top surface of the turntable 11. The bottom sides of the opposite ends of the limb plate 1 6, limb plate 2 7 and hand plate 8 are all fixed with a gathering strap 16. The gathering strap 16 is an elastic webbing. The free end of the gathering strap 16 is fixedly connected with a buckle.

[0051] Limb plate 1, limb plate 2, and hand plate 8 are all fixed with an assembly shell 17 on their opposite top sides. The assembly shell 17 is a rectangular hollow shell with its opening facing the direction of the gathering strap 16. A locking shell 18 is fitted into the inner wall of the assembly shell 17. The locking shell 18 slides along the axial direction of the assembly shell 17. A spring 4 is located between the inner wall of the assembly shell 17 and the locking shell 18. The spring 4 pushes the locking shell 18 to move towards the opening of the assembly shell 17. The inner wall of the locking shell 18 has a locking groove that matches the buckle.

[0052] A multi-axis angle-adjustable limb movement training method includes the following steps:

[0053] Step S1: Press the pressing rod 38 to disengage the toothed ring 39 from the toothed ring 40. After adjusting the backrest 3 to the target angle, release the pressing rod 38. Spring 1 will push the toothed ring 39 to re-engage with the toothed ring 40 and lock the backrest 3.

[0054] Step S2: Start the laser corrector 9 to project the calibration grid. Start the motor 31 according to the user's body shape. The transmission rod 34 drives the gear 36 to rotate through the adapter ring 35. The gear 36 drives the front and rear toothed plates 37 to move in opposite directions. The toothed plates 37 drive the two moving frames 4 to unfold synchronously to match the user's shoulder width.

[0055] Step S3: Start motor 2 32 to drive transmission screw 2 33 to rotate. Transmission screw 2 33 drives connecting frame 10 to rise and fall vertically along back panel 3 through threaded connection. Connecting frame 10 drives moving frame 4 to adjust to target height.

[0056] In step S4, rotating the pointer plate 21 causes the torsion spring 25 to tighten via the transmission column 27. The reaction force of the torsion spring 25 is transmitted to the second rotating shaft 23 and the first rotating shaft 22, increasing the rotation resistance of the shoulder frame 5 to the target value. The pawl bar 28 engages with the ratchet plate 26 under the action of the second spring to achieve one-way locking. When the shoulder frame 5 needs to rotate in the opposite direction, pull the pawl bar 28 upward to compress the second spring so that the pawl disengages from the ratchet plate 26, and the shoulder frame 5 can rotate freely in both directions.

[0057] In step S5, rotating the transmission screw 29 drives the transmission block 30 to move along the top surface of the turntable 11. The transmission block 30 drives the arc groove plate 12 to deflect. When the arc groove plate 12 rotates, the transfer wheel 13 rolls along the arc groove and changes the bending resistance of the limb plate 1 6 and the limb plate 2 7 through the extension frame 14 and the connecting rod 15. The greater the deflection of the arc groove plate 12, the greater the change in traction force on the extension frame 14 when the transfer wheel 13 rolls, and the wider the adjustment range of the bending resistance of the limb plate. During the training process, the laser corrector 9 continuously projects the calibration grid to monitor whether the user's body position is deviated in real time.

[0058] Step S6: Place the user's arm on limb board 1 6, limb board 2 7 and hand board 8, pull the strap 16 to insert the buckle into the locking shell 18 to fix the limb, and the user performs multi-axis limb activity training.

[0059] Example 1:

[0060] like Figure 1As shown, the multi-axis angle adjustable limb activity training support device of this embodiment includes a base 1, which is a rectangular frame welded structure. A seat cushion is fixedly installed on the inner side by bolts. The seat cushion is made of high-density foam sponge material covered with breathable fabric. A transfer platform 2 is fixedly connected to the right end of the base 1 by welding. The transfer platform 2 is a U-shaped frame structure, which is welded from two vertical end walls at the front and rear and a bottom connecting beam. The opening of the transfer platform 2 faces to the left and is connected to the right end of the base 1.

[0061] The inner wall of the adapter 2 is rotatably connected to the backrest 3 via a horizontal pin. The backrest 3 is a rectangular plate structure filled with cushioning material. The lower parts of the front and rear side walls of the backrest 3 are hinged to the upper parts of the front and rear end walls of the adapter 2 via pins, so that the backrest 3 can rotate around the horizontal pin within the range of 0 to 135 degrees.

[0062] Example 2:

[0063] like Figure 2 As shown, both the front and rear end walls of the adapter 2 have circular sliding holes. The pressing rod 38 is a cylindrical metal rod that passes through the sliding hole and can slide axially along the sliding hole. The outer end of the pressing rod 38 is fixedly connected to a circular pressing cap by threads. The diameter of the pressing cap is larger than the diameter of the sliding hole to prevent the pressing rod 38 from sliding in completely. The inner end of the pressing rod 38 is fixedly connected to a toothed ring 39 by welding. The toothed ring 39 is a circular metal part with radially distributed triangular teeth machined on its end face facing the backrest plate 3. The front and rear end walls of the backrest plate 3 are fixedly connected to a toothed ring 40 by screws. The toothed ring 40 has the same shape and size as the toothed ring 39, and its tooth surface is opposite to that of the toothed ring 39. When the two are engaged, the backrest plate 3 is locked and cannot rotate. A spring is provided at one end of the toothed ring 39. The spring is a compression helical spring, which is sleeved on the outer wall of the pressing rod 38 and located between the side of the toothed ring 39 and the inner wall of the transition platform 2. The two ends of the spring abut against the side of the toothed ring 39 and the inner wall of the transition platform 2, respectively. Under normal conditions, the elastic force of the spring pushes the toothed ring 39 to maintain engagement with the toothed ring 40.

[0064] Example 3:

[0065] like Figure 7 As shown, when adjusting the angle of the backrest 3, the user presses the pressing cap at the outer end of the pressing rod 38 with one hand. The pressing rod 38 drives the toothed ring 39 to move axially and compress the spring 1. The tooth surface of the toothed ring 39 disengages from the tooth surface of the toothed ring 40, and the locking of the backrest 3 is released. At this time, the backrest 3 can be rotated to the target angle. After releasing the pressing cap, the restoring force of the spring 1 pushes the toothed ring 39 to move in the opposite direction. The toothed ring 39 and the toothed ring 40 re-engage at the new angle position, and the backrest 3 is locked. The tooth pitch of the toothed rings determines the minimum division of the angle adjustment. In this embodiment, the tooth pitch corresponds to a five-degree angle interval.

[0066] Example 4:

[0067] like Figure 1 and Figure 3 As shown, the right side of the backrest panel 3 has sliding frames 4 connected to both the front and rear ends via sliders. Two vertical guide rails are provided on the right side wall of the backrest panel 3. A slider is fixed to the left end of the sliding frame 4 via bolts, and the slider is fitted into the vertical guide rails and can slide up and down along them. The sliding frame 4 is an L-shaped metal frame, including a vertical arm and a horizontal arm. The vertical arm is slidably connected to the backrest panel 3, and the horizontal arm extends to the right for mounting the shoulder swivel frame 5.

[0068] A laser corrector 9 is fixedly installed on the outside of the mobile frame 4 with screws, and a laser corrector 9 is also fixedly installed on the top center of the backrest 3 with a bracket. The laser corrector 9 is a crosshair laser projector. The laser corrector 9 on the top side of the backrest 3 projects a vertical reference line downwards, and the laser corrector 9 on the outside of the mobile frame 4 projects a horizontal reference line inwards. The two sets of laser lines intersect in front of the user's body to form a body shape calibration grid, which is used to help determine whether the user's body position is centered and whether the shoulder width matches the spacing of the mobile frame.

[0069] A connecting frame 10 is slidably connected to one end of the movable frame 4 via a dovetail groove. The connecting frame 10 has a U-shaped frame structure, including a crossbeam and front and rear side arms. The ends of the side arms are slidably connected to the opposite ends of the two movable frames 4 via dovetail guide rails, allowing the movable frame 4 to slide along the horizontal direction of the side arms of the connecting frame 10. A guide block is fixedly connected to the back of the crossbeam of the connecting frame 10 by bolts. A vertical guide groove is provided at the right end of the backrest plate 3, and the guide block is fitted into the vertical guide groove, allowing the connecting frame 10 to rise and fall vertically along the backrest plate 3.

[0070] Motor 2 32 and Motor 1 31 are fixedly connected to the front and rear sides of the top of the backrest panel 3 via motor mounts, respectively. Motor 1 31 is located on the front side, and Motor 2 32 is located on the rear side. Both are DC servo motors with reducers. The drive end of Motor 1 31 is fixedly connected to a transmission rod 34 via a coupling. The transmission rod 34 has a hexagonal prism structure and extends vertically downward. The drive end of Motor 2 32 is fixedly connected to a transmission screw 2 33 via a coupling. The transmission screw 2 33 is a trapezoidal threaded screw that extends vertically downward. The lower end of the transmission screw 2 33 is supported by a bearing in a bearing seat at the bottom of the backrest panel 3.

[0071] The outer wall of the transmission screw 2 33 is threaded into the threaded hole on the inner wall of the crossbeam of the connecting frame 10. When the starting motor 2 32 drives the transmission screw 2 33 to rotate, the connecting frame 10 is driven to rise and fall along the vertical guide groove through the threaded transmission. The connecting frame 10 drives the two moving frames 4 to rise and fall synchronously through the dovetail guide rail, realizing the electric adjustment of the height of the moving frame 4.

[0072] A transition ring 35 is slidably connected to the outer wall of the transmission rod 34. The inner wall of the transition ring 35 has a hexagonal hole that matches the hexagonal prism outer wall of the transmission rod 34, allowing the transition ring 35 to slide axially along the transmission rod 34 and rotate synchronously with it. The bottom end of the transition ring 35 is rotatably connected to the top of the crossbeam of the connecting frame 10 via a thrust bearing. When the connecting frame 10 rises or falls, the transition ring 35 slides axially along the transmission rod 34 synchronously with the connecting frame 10, while always maintaining a circumferential connection with the transmission rod 34. A gear 36, a cylindrical spur gear, is fixedly connected to the outer wall of the transition ring 35 via a flat key and is located above the crossbeam of the connecting frame 10.

[0073] Gear 36 has gear plates 37 meshing with it on its front and rear sides. The gear plates 37 are elongated straight racks, with their length direction aligned with the sliding direction of the movable frame 4. The two gear plates 37 are located on the front and rear sides of gear 36, respectively, and their bottom walls are fixedly connected to the top walls of the two movable frames 4 by screws. Figure 8 As shown, when the starting motor 31 drives the transmission rod 34 to rotate, the transmission rod 34 drives the adapter ring 35 to rotate synchronously through the hexagonal hole. The adapter ring 35 drives the gear 36 to rotate. The gear 36 simultaneously drives the front and rear toothed plates 37 to move in opposite directions in the horizontal direction. The toothed plates 37 drive the two moving frames 4 to expand or retract synchronously in opposite directions along the dovetail guide rail of the connecting frame 10, thereby realizing the electric adjustment of the spacing between the moving frames 4 to match the shoulder width of different users.

[0074] Example 5:

[0075] like Figure 1 and Figure 4 As shown, the opposite end of the horizontal arm of the movable frame 4 is rotatably connected to the shoulder frame 5 via bearings. The shoulder frame 5 is a rectangular frame structure with an internal cavity to accommodate the upper limb. A rotating shaft 22 is fixedly welded to the opposite end of the shoulder frame 5. The rotating shaft 22 is a cylindrical metal shaft arranged horizontally. A rotating shaft 23 is rotatably connected to the opposite end of the rotating shaft 22 via bearings. The rotating shaft 23 is coaxially arranged with the rotating shaft 22. Pin holes are axially formed on the opposite end faces of both rotating shafts 22 and 23. A locking pin 24 passes through both pin holes, fixing the rotating shaft 22 and rotating shaft 23 together. At this time, the shoulder frame 5 rotates synchronously with the rotating shaft 23. When the locking pin 24 is pulled out, the fixed connection between the rotating shaft 22 and rotating shaft 23 is released, allowing them to rotate relative to each other for initial angle adjustment of the shoulder frame 5.

[0076] A retaining ring 19 is rotatably connected to the outer wall of the opposite end of the rotating shaft 23 via a bearing. The retaining ring 19 is a circular metal part. The opposite end of the retaining ring 19 is fixedly connected to the inner wall of the horizontal arm of the movable frame 4 by welding. The retaining ring 19 provides rotational support for the rotating shaft 23. A receiving shell 20 is fixedly connected to the opposite end of the retaining ring 19 by screws. The receiving shell 20 is a cylindrical shell that covers the outer periphery of the end of the rotating shaft 23. A pointer plate 21 is rotatably connected to the opposite end of the receiving shell 20 via a ring guide rail. The pointer plate 21 is a circular plate with an indicator arrow on its outer circumference. An angle scale line is printed on the end face of the receiving shell 20. When the pointer plate 21 rotates, the indicator arrow points to the scale value corresponding to the current resistance.

[0077] A torsion spring 25 is fixedly connected to the inner wall of the housing 20 corresponding to the pivot 23. The torsion spring 25 is a spiral spring structure made of wound spring steel strip. The outer end of the torsion spring 25 is fixed to the outer wall of the pivot 23 by rivets, and the inner end of the torsion spring 25 is fixedly connected to a transmission column 27 by rivets. The transmission column 27 is a cylindrical metal column arranged coaxially with the pivot 23. A ratchet plate 26 is fixedly connected to the opposite end of the transmission column 27 by welding. The ratchet plate 26 is a disc-shaped metal part with one-way ratchet teeth machined on its outer circumference. The opposite end of the ratchet plate 26 is fixedly connected to the inner end face of the pointer plate 21 by screws, so that the pointer plate 21, the ratchet plate 26, and the transmission column 27 are fixedly connected as a whole. Rotating the pointer plate 21 will drive the ratchet plate 26 and the transmission column 27 to rotate synchronously.

[0078] A pawl rod 28 is slidably connected to the outer wall of the housing 20 via a second spring. A radial guide hole is provided on the outer wall of the housing 20, and the pawl rod 28 passes through the guide hole. A pawl matching the ratchet teeth is machined at the bottom end of the pawl rod 28, and the pawl is tightly engaged with the outer diameter ratchet teeth of the ratchet plate 26. The second spring is a compression helical spring, sleeved on the outer wall of the pawl rod 28, located between the outer wall of the housing 20 and the shoulder at the middle of the pawl rod 28. The elastic force of the second spring pushes the pawl rod 28 towards the ratchet plate 26, ensuring that the pawl is always engaged with the ratchet teeth. The ratchet teeth of the ratchet plate 26 have a one-way structure. When the pointer plate 21 rotates along the tension direction of the torsion spring 25, the ratchet teeth can slide along the inclined surface of the pawl to achieve one-way rotation; when the pointer plate 21 rotates in the opposite direction, the vertical surface of the ratchet teeth is blocked by the pawl and cannot rotate, thus achieving one-way locking. When reverse rotation is required, pull the pawl lever 28 upward to compress the second spring, causing the pawl to disengage from the ratchet plate 26, allowing for free rotation in both directions.

[0079] Example 6:

[0080] like Figure 9As shown, when the pointer plate 21 is rotated, it drives the ratchet plate 26 and the transmission column 27 to rotate synchronously. The transmission column 27 drives the inner end of the torsion spring 25 to rotate, causing the torsion spring 25 to be wound and tightened. The reaction force of the torsion spring 25 is transmitted to the second rotating shaft 23 through the outer end. The second rotating shaft 23 drives the first rotating shaft 22 and the shoulder rotating frame 5 through the locking pin 24, increasing the resistance when the shoulder rotating frame 5 rotates around the fixed ring 19. The larger the rotation angle of the pointer plate 21, the higher the tension of the torsion spring 25, and the greater the rotational resistance of the shoulder rotating frame 5, thus achieving stepless adjustment of the rotational resistance. The one-way engagement between the pawl lever 28 and the ratchet plate 26 ensures that the pointer plate 21 will not automatically rotate back due to the reaction force of the torsion spring 25 after adjustment, and the resistance value is locked.

[0081] Example 7:

[0082] like Figure 1 and Figure 5 As shown, within the cavity of the shoulder frame 5, limb plate 6, limb plate 7, and hand plate 8 are sequentially connected via horizontal pivots. All three plates are rectangular structures with flexible padding attached to their surfaces. Horizontal pivots are provided between limb plate 6 and the front end of the shoulder frame 5, between limb plate 6 and limb plate 7, and between limb plate 7 and hand plate 8, allowing each plate to rotate relative to the other around these pivots, simulating the flexion movements of the shoulder, elbow, and wrist joints of the upper limb.

[0083] Each rotating shaft has a turntable 11 fixedly connected to its top end by welding. The turntable 11 is a circular metal disc that rotates synchronously with the rotating shaft. A guide groove is provided inside the top end of the turntable 11. A transmission screw 29 is rotatably connected to the guide groove through a bearing. The transmission screw 29 is a trapezoidal threaded screw that is arranged radially along the turntable 11. The outer end of the transmission screw 29 extends out of the outer circumference of the turntable 11 and is fixedly connected to an adjustment knob.

[0084] A transmission block 30 is threaded onto the outer wall of the transmission screw 29. The transmission block 30 is a rectangular metal block with a guide boss integrally formed at the bottom. The guide boss is fitted into the guide groove on the top surface of the turntable 11. When the transmission screw 29 is rotated, the transmission block 30 moves radially along the guide groove. An arc-groove disk 12 is fixedly connected to the top of the transmission block 30 by screws. The arc-groove disk 12 is a disc-shaped metal part that moves synchronously with the transmission block 30. An arc-shaped groove is formed on the top surface of the arc-groove disk 12. The arc-shaped groove is a smooth Archimedean spiral, and the radius of curvature gradually increases from one end of the groove to the other end. The depth of the arc-shaped groove matches the thickness of the adapter wheel 13.

[0085] The adapter wheel 13 is a cylindrical roller that fits into the arc-shaped groove of the arc-groove plate 12 and can roll along the arc-shaped groove. The axle of the adapter wheel 13 is rotatably connected to the extension frame 14 via a bearing. The extension frame 14 is an L-shaped metal rod, one end of which is fixedly connected to the end of the axle of the adapter wheel 13, and the other end extends towards the limb plate and has a circular sleeve hole. The connecting rod 15 is a cylindrical metal rod that passes through the sleeve hole of the extension frame 14. The end of the connecting rod 15 is fixedly connected to the outer wall of the first limb plate 6 and the outer wall of the second limb plate 7 via a ball joint. The spring 3 is a compression helical spring that is sleeved on the outer wall of the connecting rod 15 and located between the end face of the sleeve hole of the extension frame 14 and the shoulder of the end of the connecting rod 15. The elastic force of the spring 3 pushes the connecting rod 15 to retract towards the extension frame 14.

[0086] When limb plate 6 or limb plate 7 bends around the pivot, the limb plate drives the connecting rod 15 to move. The connecting rod 15 pulls the extension frame 14 through the spring 3. The extension frame 14 drives the transfer wheel 13 to roll along the arc-shaped groove of the arc-grooved disk 12. As the radius of curvature of the arc-shaped groove gradually changes, the distance between the transfer wheel 13 and the center of the turntable 11 changes continuously during the rolling process, causing the traction force on the extension frame 14 to change. This, in turn, changes the resistance experienced by the limb plate when bending through the spring 3 and the connecting rod 15.

[0087] When the adjustment knob of the transmission screw 29 is turned, the transmission block 30 drives the arc-groove disk 12 to shift radially along the turntable 11. The shift of the arc-groove disk 12 changes the position of the arc groove relative to the center of the turntable 11, thus altering the lever arm and the range of change in traction force when the adapter wheel 13 rolls. The greater the offset of the arc-groove disk 12 towards the center of the turntable 11, the greater the range of change in traction force on the extension frame 14 when the adapter wheel 13 rolls, and the wider the adjustment range of the limb plate bending resistance; conversely, the smaller the offset, the smoother the change in resistance. This mechanism enables stepless mechanical adjustment of bending resistance, meeting the progressive resistance requirements of different training stages.

[0088] Example 8:

[0089] like Figure 1 and Figure 6As shown, a drawstring 16 is fixedly fitted onto the bottom side of one opposite end of the hand plate 8, limb plate 2 7, and limb plate 1 6 by rivets. The drawstring 16 is an elastic nylon webbing with a certain degree of elasticity. The free end of the drawstring 16 is fixedly connected to a buckle by a metal buckle, which is a plastic or metal male buckle. An assembly shell 17 is fixedly connected to the top side of one opposite end of the hand plate 8, limb plate 2 7, and limb plate 1 6 by screws. The assembly shell 17 is a rectangular hollow shell with its opening facing the drawstring 16. A locking shell 18 is a rectangular block that fits into the inner wall of the assembly shell 17 and can slide along the axial direction of the assembly shell 17. A spring 4 is a compression coil spring located between the inner wall of the assembly shell 17 and the locking shell 18. The elastic force of the spring 4 pushes the locking shell 18 to move towards the opening of the assembly shell 17. The inner wall of the locking housing 18 has a locking groove that matches the buckle. When the buckle at the end of the retractable strap 16 is inserted into the locking housing 18, the buckle pushes the locking housing 18 to compress the spring four. After the buckle enters the locking groove, the spring four pushes the locking housing 18 to reset and lock the buckle. Pressing the release button on the side of the locking housing 18 will unlock the buckle and allow it to be pulled out.

[0090] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-axis angle-adjustable limb activity training support device, comprising a base (1), characterized in that: The base (1) has a cushion on its inner side and a fixed adapter (2) on its right end. The inner wall of the adapter (2) is rotatably connected to a backrest (3) and the two ends are slidably connected to a pressing rod (38). The two ends of the inner wall of the backrest (3) are fixed with a second toothed ring (40). The end of the pressing rod (38) is fixed with a first toothed ring (39). The outer side of the first toothed ring (39) is provided with a spring. When the pressing rod (38) is pressed, the first toothed ring (39) is disengaged from the second toothed ring (40) and unlocked. The right side of the backrest (3) is slidably connected to the movable frame (4). The outer side of the movable frame (4) and the top side of the backrest (3) are provided with laser correctors (9). The opposite ends of the movable frame (4) are slidably connected to the connecting frame (10). The connecting frame (10) is slidably connected to the right end of the backrest (3). The top two sides of the backrest (3) are respectively fixed with motor two (32) and motor one (31). The driving ends of motor one (31) and motor two (32) are respectively fixed with transmission rod (34) and transmission screw two (33). The transmission screw two (33) is threadedly connected to the connecting frame (10). The transmission rod (34) is slidably connected to the adapter ring (35). The bottom end of the adapter ring (35) is rotatably connected to the top end and outer wall of the connecting frame (10) with a fixed gear (36). The two ends of the gear (36) mesh with the tooth plate (37). The bottom end of the tooth plate (37) is respectively fixed with the movable frame (4). The moving frame (4) is rotatably connected to the shoulder rotating frame (5) at opposite ends. The shoulder rotating frame (5) is rotatably connected to the limb plate one (6), the limb plate two (7), and the hand plate (8) in sequence. A rotating shaft is provided between adjacent plates, and a turntable (11) is fixed at the top of the rotating shaft. A transmission screw one (29) is rotatably connected inside the turntable (11). The transmission screw one (29) is threadedly connected to the transmission block (30). An arc groove plate (12) is fixed at the top of the transmission block (30). A transfer wheel (13) is sleeved on the inner side of the arc groove plate (12). An extension frame (14) is fixed on the outer wall of the transfer wheel (13). A connecting rod (15) is sleeved inside the extension frame (14) via a spring. The end of the connecting rod (15) is fixed to the limb plate one (6) and the limb plate two (7).

2. The multi-axis angle-adjustable limb movement training support device according to claim 1, characterized in that: The adapter (2) is a U-shaped frame structure. The front and rear end walls of the adapter (2) are provided with sliding holes. The pressing rod (38) passes through the sliding hole and slides along the sliding hole axis. The toothed ring one (39) and the toothed ring two (40) are arranged opposite to each other. The spring is sleeved on the outer wall of the pressing rod (38) and located between the toothed ring one (39) and the inner wall of the adapter (2). The two ends of the spring abut against the side of the toothed ring one (39) and the inner wall of the adapter (2) respectively. The pressing rod (38) is provided with a pressing cap at its outer end.

3. The multi-axis angle-adjustable limb activity training support device according to claim 1, characterized in that: The transmission rod (34) is a polygonal prism structure. The inner wall of the adapter ring (35) is provided with a polygonal hole that matches the outer wall of the transmission rod (34). The adapter ring (35) slides along the axial direction of the transmission rod (34) and rotates synchronously with the transmission rod (34). The gear (36) is a cylindrical spur gear. The two tooth plates (37) are located on the front and rear sides of the gear (36) and mesh with the gear (36). The length direction of the tooth plates (37) is consistent with the sliding direction of the moving frame (4). The moving frame (4) is slidably connected to the vertical guide rail opened on the right side of the backrest plate (3) by a slider.

4. The multi-axis angle-adjustable limb activity training support device according to claim 1, characterized in that: The transmission screw 2 (33) is arranged vertically, the connecting frame (10) is a U-shaped frame, the inner wall of the crossbeam of the connecting frame (10) is provided with a threaded hole that matches the transmission screw 2 (33), the ends of the two arms of the connecting frame (10) are slidably connected to the opposite ends of the two moving frames (4), the moving frames (4) slide along the horizontal direction of the side arms of the connecting frame (10), the right end of the backrest plate (3) is provided with a vertical guide groove, and the back of the crossbeam of the connecting frame (10) is provided with a guide block that fits into the vertical guide groove.

5. The multi-axis angle-adjustable limb activity training support device according to claim 1, characterized in that: A rotating shaft 1 (22) is fixedly connected to the shoulder rotating frame (5), and a rotating shaft 2 (23) is rotatably connected to the inner wall of a fixed ring (19) via a bearing. One end of the fixed ring (19) is fixed to the inner wall of the movable frame (4). Pin holes are provided on the opposite end faces of the rotating shaft 1 (22) and the rotating shaft 2 (23). A locking pin (24) is inserted into both pin holes to fix the rotating shaft 1 (22) and the rotating shaft 2 (23). When the locking pin (24) is pulled out, the rotating shaft 1 (22) and the rotating shaft 2 (23) rotate relative to each other. The torsion spring (25) is a spiral spring structure. The outer end of the torsion spring (25) is fixed to the outer wall of the rotating shaft 2 (23). 25) The inner end is fixedly connected to the transmission column (27). A ratchet plate (26) is fixedly connected to one end of the transmission column (27). The ratchet plate (26) is disc-shaped and has one-way ratchet teeth on its outer periphery. A pawl matching the ratchet teeth is provided at the bottom end of the pawl rod (28). The pawl is close to the outer diameter of the ratchet plate (26). The spring is sleeved on the outer wall of the pawl rod (28) and located between the outer wall of the receiving shell (20) and the shoulder of the pawl rod (28). The receiving shell (20) is fixed to one end of the fixing ring (19). A pointer plate (21) is rotatably connected to the outer end face of the receiving shell (20). The pointer plate (21) is fixedly connected to the ratchet plate (26).

6. The multi-axis angle-adjustable limb activity training support device according to claim 1, characterized in that: The arc groove disk (12) is disc-shaped and has an arc groove on its top surface. The radius of curvature of the arc groove gradually changes from one end to the other. The adapter wheel (13) is fitted into the arc groove and rolls along the arc groove. The extension frame (14) is an L-shaped rod structure. One end of the extension frame (14) is fixedly connected to the wheel axle of the adapter wheel (13). The other end of the extension frame (14) has a sleeve hole. The connecting rod (15) passes through the sleeve hole. The spring is sleeved on the outer wall of the connecting rod (15) and located between the extension frame (14) and the end shoulder of the connecting rod (15). The bottom of the transmission block (30) is provided with a guide boss that fits into the guide groove on the top surface of the turntable (11).

7. The multi-axis angle-adjustable limb activity training support device according to claim 1, characterized in that: The bottom side of the opposite end of the limb plate one (6), the limb plate two (7) and the hand plate (8) are all fixed with a gathering strap (16). The gathering strap (16) is an elastic webbing. The free end of the gathering strap (16) is fixedly connected with a buckle. The top side of the opposite end of the limb plate one (6), the limb plate two (7) and the hand plate (8) are all fixed with an assembly shell (17). The assembly shell (17) is a rectangular hollow shell with the opening facing the direction of the gathering strap (16). The inner wall of the assembly shell (17) is fitted with a locking shell (18). The locking shell (18) slides along the axial direction of the assembly shell (17). The spring four is located between the inner wall of the assembly shell (17) and the locking shell (18). The spring four pushes the locking shell (18) to move towards the opening direction of the assembly shell (17). The inner wall of the locking shell (18) is provided with a locking groove that matches the buckle.

8. The multi-axis angle-adjustable limb movement training support device according to claim 1, characterized in that: The laser corrector (9) is a crosshair laser projector. The laser corrector (9) on the top side of the backrest (3) projects a vertical reference line, and the laser corrector (9) on the outside of the moving frame (4) projects a horizontal reference line. The projection lines of the two sets of laser correctors (9) intersect to form a body shape calibration grid.

9. A multi-axis angle-adjustable limb activity training method, employing the multi-axis angle-adjustable limb activity training support device as described in any one of claims 1 to 8, characterized in that, Includes the following steps: Step S1: Press the pressing rod (38) to disengage the toothed ring one (39) from the toothed ring two (40), adjust the backrest plate (3) to the target angle and then release the pressing rod (38). The spring one pushes the toothed ring one (39) to re-engage with the toothed ring two (40) and lock the backrest plate (3). Step S2, the laser corrector (9) is activated to project the calibration grid. The motor (31) is activated according to the user's body shape. The transmission rod (34) drives the gear (36) to rotate through the adapter ring (35). The gear (36) drives the two front and rear toothed plates (37) to move in opposite directions. The toothed plates (37) drive the two moving frames (4) to unfold synchronously to match the user's shoulder width. Step S3: Start the second motor (32) to drive the second transmission screw (33) to rotate. The second transmission screw (33) drives the connecting frame (10) to rise and fall vertically along the backrest (3) through a threaded connection. The connecting frame (10) drives the moving frame (4) to adjust to the target height. Step S4, rotating the pointer plate (21) drives the torsion spring (25) to tighten through the transmission column (27). The reaction force of the torsion spring (25) is transmitted to the second rotating shaft (23) and the first rotating shaft (22), which increases the rotation resistance of the shoulder frame (5) to the target value. The pawl bar (28) engages with the ratchet plate (26) under the action of the second spring to achieve one-way locking. Step S5, rotate the first transmission screw (29) to drive the transmission block (30) to move along the top surface of the turntable (11), the transmission block (30) drives the arc groove disk (12) to shift, when the arc groove disk (12) rotates, the adapter wheel (13) rolls along the arc groove and changes the bending resistance of the first limb plate (6) and the second limb plate (7) through the extension frame (14) and the connecting rod (15); Step S6: Place the user's arm on the limb plate one (6), the limb plate two (7) and the hand plate (8), pull the strap (16) to insert the buckle into the locking shell (18) to fix the limb, and the user performs multi-axis limb activity training.

10. A multi-axis angle-adjustable limb movement training support device according to claim 9, characterized in that: In step S4, when the shoulder frame (5) needs to rotate in the opposite direction, the pawl bar (28) is pulled upward to compress the spring and make the pawl disengage from the ratchet plate (26), and the shoulder frame (5) rotates freely in both directions; In step S5, the greater the offset of the arc groove disk (12), the greater the change in traction force on the extension frame (14) when the adapter wheel (13) rolls, the wider the range of adjustment of the bending resistance of the limb plate, and the laser corrector (9) continuously projects the calibration grid during the training process to monitor whether the user's body position is deviated in real time.

Images