Arm exercise device for rehabilitation of children

Abstract

The invention discloses an arm exercise device for child rehabilitation, which comprises a base and a protective plate arranged on the base and used for supporting the arm part of a child, the protective plate comprises an upper arm supporting arc plate and a forearm supporting protective plate which are respectively used for fixing the upper arm and the forearm of the arm, and the base is provided with a swing structure for driving the arm of the child to perform bending training. The swing structure comprises a position stopping sliding block arranged on the base, a left vertical frame and a right vertical frame which swing synchronously are arranged on the position stopping sliding block, and an arm swing assembly for driving the upper arm supporting arc plate and the front arm supporting protection plate to swing synchronously in the vertical direction in a reciprocating mode is arranged on the base. The requirement of the cerebral palsy children for the arm movement range in different life scenes is met, so that the arm function is more comprehensively improved, and the daily life self-care ability of the children is improved through diversified bending amplitude training.

Description

Technical Field

[0001] The invention relates to the technical field of arm rehabilitation devices, in particular to an arm exercise device for children's rehabilitation. Background Art

[0002] With the development of society and the advancement of medical technology, the field of children's rehabilitation has received increasing attention. Due to their physiological and psychological characteristics, children need special attention and appropriate rehabilitation equipment during the rehabilitation process. Among the many rehabilitation needs, the rehabilitation of arm function is particularly important, because the daily activities of the arms have a direct impact on children's self-care ability and social interaction ability.

[0003] Chinese patent (publication number: CN114053669B), the scheme specifically includes: a mounting box, an arm exercise mechanism and an incomplete gear mechanism; the arm exercise mechanism is provided with two groups, which are respectively arranged on the two large sides of the mounting box; the incomplete gear mechanism includes a driving gear sleeved on a rotating shaft and a driven gear meshing therewith, and also includes a support shaft, which is vertically arranged in the mounting box and the driven gear is sleeved on the support shaft, the upper end of the support shaft passes through the upper side wall of the mounting box and is connected to a triangular prism, each side of the triangular prism is provided with a display screen, the triangular prism is a hollow structure and its upper end face is an open structure, the internal thread of the triangular prism is connected to a cylindrical slider, and the upper side of the internal triangular prism is also provided with a control switch connected to the display screen; the present invention solves the problem that children are not active in doing arm rehabilitation training.

[0004] The above patent can achieve the purpose of exercising children's arms by attracting children's interest. However, when training the arms of children with cerebral palsy, the flexibility and coordination of their fingers, wrists and arms are insufficient. Therefore, arm exercises are needed to improve their ability to take care of themselves in daily life.

[0005] In the process of cultivating the self-care ability of children with cerebral palsy, due to the needs of daily life, the angle between the child's upper arm and shoulder and the degree of flexion of the elbow need to have a certain degree of flexibility and adjustability. However, existing rehabilitation training equipment often cannot provide multi-angle and multi-dimensional arm training, which limits the adaptability and effectiveness of the training and is difficult to meet the needs of children with cerebral palsy for the range of arm movements in different life scenarios.

[0006] At the same time, cerebral palsy (CP) is a neurodevelopmental disorder caused by abnormal brain development or damage, which is characterized by affecting children's motor control, coordination and balance. Spasticity, that is, involuntary contraction and relaxation of muscles, is a common symptom in children with cerebral palsy, especially in the arms and other limbs. This spasticity may cause abnormal bending of the wrist. Long-term existence may affect the normal development of the wrist bones, and then adversely affect the basic motor functions of the children's hands, such as grasping, writing, dressing and other daily activities. Existing arm rehabilitation equipment has limited effect on improving the wrist spasticity problem of children with cerebral palsy, and it is difficult to achieve effective rehabilitation goals. Therefore, an arm exercise device for children's rehabilitation is proposed. Summary of the invention

[0007] The purpose of the present invention is to provide an arm exercise device for children's rehabilitation, which has the advantages of improving the tremor problem in the wrist of children with cerebral palsy, and solves the problem of difficulty in meeting the arm movement range requirements of children with cerebral palsy in different life scenarios.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solutions: an arm exercise device for children's rehabilitation, comprising a base and a guard plate thereon for supporting the child's arm, the guard plate comprising an upper arm support arc plate and a forearm support guard plate for fixing the upper arm and forearm of the arm respectively, and elastic straps are arranged on the upper arm support arc plate and the forearm support guard plate, and a dynamic swing structure for driving the child's arm to perform bending training is arranged on the base;

[0009] The swing structure comprises a blocking slider arranged on a base, a left vertical frame and a right vertical frame which swing synchronously are arranged on the blocking slider, both of which are fixedly connected to the upper arm support arc plate, and an arm swing assembly which drives the upper arm support arc plate and the forearm support guard plate to swing synchronously back and forth in the vertical direction is arranged on the base;

[0010] A downward connecting block is provided below the base, the downward connecting block is fixedly connected to the left vertical frame and the right vertical frame, a swing frame fixedly connected to the forearm support guard plate is provided below the downward connecting block, and a curved angle component for adjusting the angle between the forearm support guard plate and the upper arm support arc plate is provided on the right vertical frame;

[0011] The forearm support guard plate is provided with a metacarpal guard plate for supporting the back of the child's hand at one end away from the upper arm support arc plate, and a correction component for driving the child's wrist to bend is provided on the forearm support guard plate;

[0012] The base is also provided with a swing amplitude component for adjusting the swing amplitude of the upper arm supporting arc plate and the forearm supporting guard plate.

[0013] Preferably, the arm swing assembly comprises a special-shaped crank rod fixedly connected to the base, the special-shaped crank rod is provided with a driving rod driven by a motor and freely rotating in a vertical direction, and the driving rod is fixedly rotated on the special-shaped crank rod;

[0014] The end of the driving rod away from the special-shaped turning rod is fixedly rotated with a positioning ring, and a yielding groove for accommodating the positioning ring is opened on the left vertical frame, and the outer peripheral surface of the positioning ring is in sliding contact with the inner wall of the positioning ring.

[0015] Preferably, the base is provided with an open groove for the blocking slider to slide in the vertical direction, and the blocking slider is provided with a transverse axis for fixed axis rotation, and both ends of the transverse axis are respectively fixedly connected to the left vertical frame and the right vertical frame.

[0016] Preferably, the amplitude component comprises a reciprocating screw rod arranged in an open slot, the reciprocating screw rod is fixedly rotated on a base, and the reciprocating screw rod and the blocking slider are threadedly connected;

[0017] The reciprocating screw rod passes through the base and is coaxially fixed with a central gear. A side gear connected to the driving rod is rotated on a fixed axis on the base, and the side gear and the central gear are meshed and connected.

[0018] The swing amplitude of the forearm support guard plate and the upper arm support arc plate increases as the height of the blocking slider decreases.

[0019] Preferably, the curved corner assembly includes a positioning slide block that reciprocates on the right vertical frame, and a positioning slide groove for sliding connection of the positioning slide block is provided on the right vertical frame, and the positioning slide block is fixedly connected to a rack;

[0020] A center column is fixedly connected to the swing frame, and the center column is rotated on the downward connecting block through a fixed axis. A side gear is coaxially fixed to the end of the center column, and the side gear is meshedly connected with the rack.

[0021] Preferably, the end of the special-shaped turning rod away from the driving rod is provided with a connecting rod for fixed-axis rotation, and the end of the connecting rod away from the special-shaped turning rod is fixed-axis rotated on the same-position sliding block.

[0022] Preferably, the metacarpal guard is rotated on a fixed axis on the swing frame, and a wristband for limiting the position of the back of the child's hand is fixedly connected to the metacarpal guard. The correction component includes a lateral capstan, which is coaxially fixed to the end of the center column away from the lateral gear. A tension rope is wound on the lateral capstan, and both ends of the tension rope are respectively fixedly connected to the lateral capstan and the metacarpal guard.

[0023] Preferably, a rope block is fixedly connected to the forearm support guard plate, and a round hole is provided on the rope block for the tension rope to pass through.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention can provide multi-angle and multi-dimensional arm training by setting a dynamic swing structure, meet the needs of children with cerebral palsy for arm range of motion in different life scenarios, thereby improving arm function more comprehensively, and through diversified bending range training, it can improve the motor coordination and muscle strength of children with cerebral palsy, thereby improving children's daily life self-care ability.

[0026] 2. The present invention can drive the wrist of a child with cerebral palsy to swing back and forth by providing a correction component, thereby exercising the child's wrist position to improve the tremor problem of the wrist of the child with cerebral palsy, and then exercising the child's basic hand motor functions, such as grasping, writing, dressing and other daily activities, thereby improving the child's ability to take care of himself in daily life. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the components where the special-shaped turning rod of the present invention is located;

[0029] Figure 3 It is a schematic diagram of the components where the driving rod of the present invention is located;

[0030] Figure 4 This is a schematic diagram of the components where the metacarpal bone guard of the present invention is located;

[0031] Figure 5 For the present invention Figure 3 Enlarged view of point A in the middle;

[0032] Figure 6 For the present invention Figure 4 Enlarged view of point B in the middle;

[0033] Figure 7 This is a schematic diagram of the components where the transverse axis of the present invention is located;

[0034] Figure 8 It is a schematic diagram of the components where the homing slider of the present invention is located;

[0035] Fig. 9 It is a schematic diagram of the relationship between the rotation process of the driving rod and the change of the swing amplitude of the left vertical frame of the present invention.

[0036] In the figure: 1. base; 2. special-shaped turning rod; 3. left vertical frame; 4. right vertical frame; 5. driving rod; 6. swing ring; 7. give-way slide; 8. upper arm support arc plate; 9. open groove; 10. reciprocating screw; 11. blocking slider; 12. transverse axis; 13. center gear; 14. side gear; 15. same-position slider; 16. positioning slide; 17. connecting rod; 18. rack; 19. side gear; 20. downward connecting block; 21. lateral capstan; 22. swing frame; 23. forearm support guard plate; 24. tension rope; 25. metacarpal guard plate; 26. elastic strap; 27. wrist strap; 28. rope block. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figures 1 to 9 The present invention provides a technical solution: an arm exercise device for children's rehabilitation, comprising a base 1 and a guard plate thereon for supporting the child's arm, the guard plate comprising an upper arm support arc plate 8 and a forearm support guard plate 23 for fixing the upper arm and forearm of the arm respectively, and elastic straps 26 are arranged on the upper arm support arc plate 8 and the forearm support guard plate 23, and a dynamic swing structure for driving the child's arm to perform bending training is arranged on the base 1;

[0039] The swing structure comprises a blocking slider 11 arranged on a base 1, on which a left vertical frame 3 and a right vertical frame 4 are provided for synchronous swinging, both of which are fixedly connected to the upper arm support arc plate 8, and an arm swing assembly is provided on the base 1 for driving the upper arm support arc plate 8 and the forearm support guard plate 23 to swing back and forth synchronously in the vertical direction;

[0040] A downward connecting block 20 is provided below the base 1, and the downward connecting block 20 is fixedly connected to the left vertical frame 3 and the right vertical frame 4. A swing frame 22 fixedly connected to the forearm support guard plate 23 is provided below the downward connecting block 20, and a curved angle component for adjusting the angle between the forearm support guard plate 23 and the upper arm support arc plate 8 is provided on the right vertical frame 4;

[0041] The end of the forearm support guard plate 23 away from the upper arm support arc plate 8 is provided with a metacarpal guard plate 25 for supporting the back of the child's hand, and the forearm support guard plate 23 is provided with a correction component for driving the child's wrist to bend;

[0042] The base 1 is also provided with a swing amplitude component for adjusting the swing amplitude of the upper arm supporting arc plate 8 and the forearm supporting guard plate 23.

[0043] like Figure 1 and Figure 2 As shown, when exercising the arms of children with cerebral palsy to cultivate their ability to take care of themselves, the upper arm and forearm of the child with cerebral palsy are respectively fixed to the upper arm support arc plate 8 and the forearm support guard plate 23 by tightening the elastic straps 26 with adjustable length. Driven by the arm swing assembly, the upper arm support arc plate 8 and the forearm support guard plate 23 rotate synchronously in the vertical direction about the rotation center point of the end of the upper arm support arc plate 8.

[0044] At the same time, with the synchronous swinging of the upper arm support arc plate 8 and the forearm support guard plate 23, the bending angle assembly can be driven to operate, thereby changing the angle between the upper arm support arc plate 8 and the forearm support guard plate 23, that is, driving the elbow of the cerebral palsy child to bend, and then driving the upper arm support arc plate 8 to rotate relative to the forearm support guard plate 23 while following the swing of the forearm support guard plate 23, thereby training the elbow of the cerebral palsy child while training the upper arm.

[0045] At the same time, due to the needs of daily life, the angle between the child's upper arm and shoulder and the degree of flexion of the elbow need to have a certain degree of flexibility and adjustability. Driven by the amplitude component, the swing amplitude of the upper arm support arc plate 8 can be adjusted, and at the same time, the degree of bending of the child's elbow can be adjusted. Through diversified bending amplitude training, the motor coordination and muscle strength of children with cerebral palsy can be improved, and the remodeling of the brain and nervous system can be promoted, and neural plasticity can be improved, thereby improving motor skills and daily life self-care ability.

[0046] Among them, tremor, that is, involuntary contraction and relaxation of muscles, is a common symptom in children with cerebral palsy, especially in the arms and other limbs. This tremor may cause abnormal bending of the wrist, and long-term existence may affect the normal development of the wrist bones. Therefore, in the process of exercising children's arms, the correction components can drive the wrist of children with cerebral palsy to swing back and forth, thereby exercising the child's wrist position to improve the tremor problem in the wrist of children with cerebral palsy, and then exercising the basic motor functions of the children's hands, such as grasping, writing, dressing and other daily activities, thereby improving the daily self-care ability of children with cerebral palsy.

[0047] In one of the more preferred embodiments, the arm swing assembly includes a special-shaped crank rod 2 fixedly connected to the base 1, and the special-shaped crank rod 2 is provided with a driving rod 5 driven by a motor and freely rotating in the vertical direction, and the driving rod 5 is fixedly rotated on the special-shaped crank rod 2. The arm swing assembly includes a special-shaped crank rod 2 fixedly connected to the base 1, and the special-shaped crank rod 2 is provided with a driving rod 5 driven by a motor and freely rotating in the vertical direction, and the driving rod 5 is fixedly rotated on the special-shaped crank rod 2;

[0048] The end of the driving rod 5 away from the special-shaped turning rod 2 is fixedly rotated with a positioning ring 6, and the left vertical frame 3 is provided with a clearance groove 7 for accommodating the positioning ring 6, and the outer peripheral surface of the positioning ring 6 is in sliding contact with the inner wall of the positioning ring 6.

[0049] The base 1 is provided with an open groove 9 for the blocking slider 11 to slide in the vertical direction. The blocking slider 11 is provided with a transverse shaft 12 which is fixedly rotated. The two ends of the transverse shaft 12 are respectively fixedly connected to the left vertical frame 3 and the right vertical frame 4.

[0050] like Figure 1 , Figure 3 and Figure 5 As shown, the driving rod 5 is driven to rotate in the vertical direction by a motor fixed on the special-shaped turning rod 2, thereby driving the positioning ring 6 set at the end of the driving rod 5 to swing synchronously, wherein the positioning ring 6 is slidably connected to the left vertical frame 3 through the yielding groove 7, and the rotation center points of the left vertical frame 3 and the right vertical frame 4 are both set on the blocking slider 11. Therefore, when the driving rod 5 continues to rotate, it can drive the left vertical frame 3 and the right vertical frame 4 to swing synchronously in the vertical direction, and the swing amplitudes of the left vertical frame 3 and the right vertical frame 4 are consistent.

[0051] At the same time, a transverse axis 12 is fixedly rotated on the blocking slider 11, and the ends of the transverse axis 12 are respectively fixedly connected to the left vertical frame 3 and the right vertical frame 4. Therefore, with the continuous rotation of the driving rod 5, the left vertical frame 3 can be driven to swing at any time, and the swing center of the left vertical frame 3 is the position of the transverse axis 12, and then the right vertical frame 4 is driven to swing synchronously with the left vertical frame 3 through the rotation of the transverse axis 12, and the swing centers of both are the position of the transverse axis 12. The left vertical frame 3 and the right vertical frame 4 are both fixedly connected to the upper arm support arc plate 8. Therefore, when the two swing synchronously, they can drive the upper arm to swing to complete the arm horizontal raising training process.

[0052] It should be noted that, in actual use, the placement direction of the base 1 can be changed so that the base 1 is placed horizontally in the initial state, and then when the arm swing assembly is running, the arms of children with cerebral palsy can be trained to raise their arms. Therefore, according to actual training needs, the upper arms of children can be trained at multiple angles.

[0053] Based on the arm swing assembly embodiment, the amplitude assembly includes a reciprocating screw 10 arranged in an open slot 9, the reciprocating screw 10 is fixedly rotated on the base 1, and the reciprocating screw 10 is threadedly connected to the blocking slider 11;

[0054] The reciprocating screw rod 10 passes through the base 1 and is coaxially fixed with a center gear 13. A fixed-axis rotating side gear 14 with a transmission connection to the driving rod 5 is provided on the base 1, and the side gear 14 and the center gear 13 are meshingly connected. The reciprocating screw rod 10 passes through the base 1 and is coaxially fixed with a center gear 13. A fixed-axis rotating side gear 14 with a transmission connection to the driving rod 5 is provided on the base 1, and the side gear 14 and the center gear 13 are meshingly connected. The reciprocating screw rod 10 passes through the base 1 and is coaxially fixed with a center gear 13. A fixed-axis rotating side gear 14 with a transmission connection to the driving rod 5 is provided on the base 1, and the side gear 14 and the center gear 13 are meshingly connected.

[0055] The swing amplitude of the forearm support guard plate 23 and the upper arm support arc plate 8 increases as the height of the blocking slider 11 decreases.

[0056] like Figure 1 , Figure 7 and Fig. 9 As shown, when the reciprocating screw 10 rotates freely on the base 1, the relative position of the reciprocating screw 10 and the base 1 can be changed by the rotation of the reciprocating screw 10, thereby changing the position of the transverse axis 12, so as to achieve the purpose of changing the rotation center point position of the left vertical frame 3 and the right vertical frame 4.

[0057] At the same time, the swing center point of the driving rod 5 is on the special-shaped turning rod 2 and its position remains unchanged. When the height of the blocking slider 11 changes, the swing amplitude of the positioning ring 6 at the end of the driving rod 5 remains unchanged during the rotation. Therefore, as the position of the swing center point of the left vertical frame 3 and the right vertical frame 4 changes, the swing amplitude of the left vertical frame 3 and the right vertical frame 4 changes.

[0058] Among them, Fig. 9 As shown in FIG. 1 , when the swing amplitude of the left vertical frame 3 is Q, the vertical movement distance of a fixed point in the driving rod 5 is L. The closer to the swing center point of the left vertical frame 3, the smaller the required movement distance L is to drive the swing amplitude of the left vertical frame 3 to Q. Fig. 9 It is represented as follows: as the positions of the rotation center point of the driving rod 5 and the swing center point of the left vertical frame 3 are different, the lengths of L1 and L2 in the movement distance L are different, that is, when the distance between the driving rod 5 and the swing center point of the left vertical frame 3 is smaller, the required displacement distance L is smaller when the swing amplitude is fixed Q.

[0059] In combination with the rotation process of the driving rod 5, the rotation center point of the driving rod 5 remains unchanged, and the length of the driving rod 5 is fixed. In the initial state, the distance between the rotation center point of the driving rod 5 and the swing center point of the left vertical frame 3 is the largest. At this time, when the driving rod 5 rotates, the horizontal displacement distance of the positioning ring 6 at its end is fixed. Therefore, the swing amplitude of the driving rod 5 is the smallest at this time. As the blocking slider 11 moves downward at the base 1, the distance between its transverse axis 12 and the rotation center point of the driving rod 5 becomes smaller, and the horizontal displacement distance of the positioning ring 6 remains unchanged. Therefore, the swing amplitude of the left vertical frame 3 will gradually increase.

[0060] At the same time, the side gear 14 is connected to the driving rod 5 by transmission, and the side gear 14 is meshed with the center gear 13. The driving rod 5 and the side gear 14 can be transmitted through the meshing of the fan gear and the two sets of complete gears, thereby realizing the alternating rotation of the driving rod 5 and the side gear 14. During the rotation of the side gear 14, the reciprocating screw 10 can be driven to rotate through the center gear 13 to achieve the purpose of changing the height of the blocking slider 11 and the transverse axis 12, thereby adjusting the swing amplitude of the left vertical frame 3 and the right vertical frame 4, so that the device can train children's arms in different swing amplitude ranges to cope with different arm lifting movements in daily life.

[0061] Furthermore, the curved corner assembly includes a positioning slide block 15 that reciprocates on the right vertical frame 4, and a positioning slide groove 16 for the positioning slide block 15 to be slidably connected is provided on the right vertical frame 4, and the positioning slide block 15 is fixedly connected to a rack 18;

[0062] The swing frame 22 is fixedly connected with a center column, which rotates on the downward connecting block 20 . The end of the center column is coaxially fixed with a side gear 19 , which is meshed with the rack 18 .

[0063] The end of the special-shaped turning rod 2 away from the driving rod 5 is fixedly rotated with a connecting rod 17, and the end of the connecting rod 17 away from the special-shaped turning rod 2 is fixedly rotated on the same position sliding block 15.

[0064] like Figure 2 , Figure 4 and Figure 8 As shown, when the right vertical frame 4 swings synchronously with the left vertical frame 3, the same position slider 15 on the right vertical frame 4 can swing, wherein the length of the connecting rod 17 is fixed, and the two ends of the connecting rod 17 are respectively rotated on the same position slider 15 and the special-shaped turning rod 2. Therefore, when the right vertical frame 4 swings, in order to adapt to the swinging process of the same position slider 15, its connecting rod 17 can rotate on the special-shaped turning rod 2, wherein the rotation amplitude of the connecting rod 17 changes synchronously with the swing amplitude of the right vertical frame 4, that is, when the swing amplitude of the left vertical frame 3 and the right vertical frame 4 becomes larger, the rotation amplitude of the connecting rod 17 increases.

[0065] At the same time, when the isostatic slider 15 swings with the right vertical frame 4, the isostatic slider 15 can slide along the opening direction of the positioning slot 16 under the restriction of the connecting rod 17, thereby driving the rack 18 to move, wherein the rack 18 is meshed and connected with the side gear 19, thereby driving the side gear 19 to rotate and deflect the swing frame 22 on the downward connecting block 20 through the center column to change the angle between the upper arm support arc plate 8 and the forearm support guard plate 23.

[0066] It should be noted that when the height of the blocking slider 11 is driven by the movable amplitude component to decrease, at this time, the spacing between the same-position slider 15 and the side gear 19 increases under the restriction of the connecting rod 17, thereby causing relative movement between the side gear 19 and the rack 18, so that when the movable amplitude component is running, the side gear 19 can be driven to rotate a certain angle through the relative movement of the two, thereby changing the initial angle between the upper arm support arc plate 8 and the forearm support guard plate 23, and synchronously changing the subsequent swing amplitude of the upper arm support arc plate 8 and the forearm support guard plate 23 and the angle change amplitude between the forearm support guard plate 23 and the upper arm support arc plate 8, thereby performing a multi-angle training process with different initial angles and different change angles for the arm swing amplitude and elbow bending of children with cerebral palsy to meet different life needs, thereby better improving the daily life self-care ability of children with cerebral palsy.

[0067] Based on the embodiment of the curved angle component, the metacarpal guard 25 rotates on a fixed axis on the swing frame 22, and a wrist strap 27 for limiting the position of the back of the child's hand is fixedly connected to the metacarpal guard 25. The correction component includes a lateral capstan 21, which is coaxially fixed on the end of the center column away from the lateral gear 19. A tension rope 24 is wound on the lateral capstan 21, and the two ends of the tension rope 24 are respectively fixedly connected to the lateral capstan 21 and the metacarpal guard 25.

[0068] The forearm support guard plate 23 is fixedly connected with a rope block 28 , and the rope block 28 is provided with a round hole for the tension rope 24 to pass through.

[0069] like Figure 2 , Figure 4 and Figure 6 As shown, when the lateral gear 19 rotates, it can drive the lateral winch 21 fixed coaxially with the center column to rotate synchronously. The rotation of the lateral gear 19 can change the angle between the forearm support guard plate 23 and the upper arm support arc plate 8. The lateral winch 21 is wound with a tension rope 24, and the two ends of the tension rope 24 are respectively fixedly connected to the lateral winch 21 and the wrist strap 27. In actual use, the back of the child's hand is fixed to the metacarpal guard plate 25 by the wrist strap 27 with adjustable tightness. When the lateral winch 21 rotates, the tension rope 24 can be wound, thereby pulling the wrist strap 27, and then driving the wrist strap 27 to deflect on the forearm support guard plate 23.

[0070] At the same time, with the operation of the arm swing assembly, the angle between the forearm support guard plate 23 and the upper arm support arc plate 8 changes back and forth, thereby causing the lateral winch 21 to rotate back and forth, thereby causing the lateral winch 21 to repeatedly wind up and release the tension rope 24, wherein a torsion spring is provided on the swing frame 22 to drive the metacarpal guard plate 25 to return to the initial deflection angle, and the torsion spring is an existing device and a technical means well known to those skilled in the art, so it is not shown in the figure, wherein, through the winding process of the tension rope 24 by the lateral winch 21, the angle between the forearm support guard plate 23 and the metacarpal guard plate 25 can be increased to prompt the child's hand and forearm to open, and when the tension rope 24 is released, the metacarpal guard plate 25 can be reset under the action of the torsion spring, thereby training the child's wrist through the repeated angle changes between the wrist strap 27 and the forearm support guard plate 23, so as to improve the wrist spasm problem of children with cerebral palsy, thereby achieving the purpose of exercising the child's basic daily activity ability of the hand.

[0071] It should be noted that in order to limit the position of the tension rope 24 and prevent the existence of the tension rope 24 from interfering with the deflection process of the forearm support guard plate 23 and the metacarpal guard plate 25, multiple groups of rope blocks 28 are arranged on the forearm support guard plate 23 so that the tension rope 24 passes through the rope blocks 28 and is fixedly connected to the metacarpal guard plate 25, so that the tension rope 24 will not be stuck by the rotation process of the forearm support guard plate 23 and the metacarpal guard plate 25, and it can be ensured that the tension rope 24 can be smoothly reeled or released, and by controlling the length of the tension rope 24, the tension rope 24 is in a taut state to ensure that the tension rope 24 can pull the metacarpal guard plate 25 and change the bending angle of the child's wrist when reeling.

[0072] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An arm exercise device for children's rehabilitation, comprising a base (1) and a guard plate thereon for supporting the child's arm, the guard plate comprising an upper arm support arc plate (8) and a forearm support guard plate (23) for fixing the upper arm and forearm of the arm respectively, and elastic straps (26) are provided on the upper arm support arc plate (8) and the forearm support guard plate (23), characterized in that: The base (1) is provided with a swing structure for driving the child's arms to perform bending training; The swing structure comprises a blocking slider (11) arranged on a base (1), the blocking slider (11) is provided with a left vertical frame (3) and a right vertical frame (4) which swing synchronously, both the left vertical frame (3) and the right vertical frame (4) are fixedly connected to the upper arm support arc plate (8), and the base (1) is provided with an arm swing assembly which drives the upper arm support arc plate (8) and the forearm support guard plate (23) to swing synchronously back and forth in the vertical direction; A downwardly extending connecting block (20) is provided below the base (1), the downwardly extending connecting block (20) is fixedly connected to the left vertical frame (3) and the right vertical frame (4), a swing frame (22) fixedly connected to the forearm support guard plate (23) is provided below the downwardly extending connecting block (20), and a curved angle component for adjusting the angle between the forearm support guard plate (23) and the upper arm support arc plate (8) is provided on the right vertical frame (4); The end of the forearm support guard plate (23) away from the upper arm support arc plate (8) is provided with a metacarpal bone guard plate (25) for supporting the back of the child's hand, and the forearm support guard plate (23) is provided with a correction component for driving the child's wrist to bend; The base (1) is also provided with a swing amplitude component for adjusting the swing amplitude of the upper arm support arc plate (8) and the forearm support guard plate (23).

2. The arm exercise device for children's rehabilitation according to claim 1, characterized in that: The arm swing assembly comprises a special-shaped crank rod (2) fixedly connected to a base (1), a driving rod (5) driven by a motor and freely rotating in a vertical direction is provided on the special-shaped crank rod (2), and the driving rod (5) is fixedly rotated on the special-shaped crank rod (2); The end of the driving rod (5) away from the special-shaped turning rod (2) is provided with a positioning ring (6) for fixed axis rotation, and the left vertical frame (3) is provided with a clearance groove (7) for accommodating the positioning ring (6), and the outer peripheral surface of the positioning ring (6) is in sliding contact with the inner wall of the positioning ring (6).

3. The arm exercise device for children's rehabilitation according to claim 2, characterized in that: The base (1) is provided with an open groove (9) for the blocking slider (11) to slide and connect in a vertical direction. The blocking slider (11) is provided with a transverse shaft (12) that is fixedly rotatable. The two ends of the transverse shaft (12) are respectively fixedly connected to the left vertical frame (3) and the right vertical frame (4).

4. The arm exercise device for children's rehabilitation according to claim 3, characterized in that: The dynamic amplitude assembly comprises a reciprocating screw (10) arranged in an open slot (9), the reciprocating screw (10) is fixedly rotatable on a base (1), and the reciprocating screw (10) and a blocking slider (11) are threadedly connected. The reciprocating screw rod (10) passes through the base (1) and is coaxially fixed with a central gear (13); a side gear (14) is fixedly rotated on the base (1) and is transmission-connected to the driving rod (5); the side gear (14) and the central gear (13) are meshingly connected; The swing amplitudes of the forearm support guard plate (23) and the upper arm support arc plate (8) increase as the height of the blocking slider (11) decreases.

5. The arm exercise device for children's rehabilitation according to claim 4, characterized in that: The curved corner assembly comprises a positioning slide block (15) which reciprocates on the right vertical frame (4), and a positioning slide groove (16) for the positioning slide block (15) to be slidably connected is provided on the right vertical frame (4), and the positioning slide block (15) is fixedly connected with a rack (18); The swing frame (22) is fixedly connected with a center column, which is fixedly axially rotated on a downwardly extending connecting block (20), and a side gear (19) is coaxially fixed to the end of the center column, and the side gear (19) is meshingly connected with a rack (18).

6. The arm exercise device for children's rehabilitation according to claim 5, characterized in that: The end of the special-shaped turning rod (2) away from the driving rod (5) is provided with a connecting rod (17) for fixed axis rotation, and the end of the connecting rod (17) away from the special-shaped turning rod (2) is fixed axis rotation on the same position sliding block (15).

7. The arm exercise device for children's rehabilitation according to claim 6, characterized in that: The metacarpal bone guard (25) is fixedly rotated on the swing frame (22), and a wrist strap (27) for limiting the position of the back of the child's hand is fixedly connected to the metacarpal bone guard (25). The correction component includes a lateral capstan (21), which is coaxially fixed to an end of the center column away from the lateral gear (19), and a tension rope (24) is wound on the lateral capstan (21), and the two ends of the tension rope (24) are respectively fixedly connected to the lateral capstan (21) and the metacarpal bone guard (25).

8. The arm exercise device for children's rehabilitation according to claim 7, characterized in that: A rope block (28) is fixedly connected to the forearm support guard plate (23), and a round hole is provided on the rope block (28) for the tension rope (24) to pass through.

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