Adjustable chair for cerebral palsy children

Abstract

The application relates to an adjustable sitting posture correction chair for cerebral palsy children, which comprises two chair frames, a headrest assembly, a footrest assembly, four sets of limiting assemblies and three sets of clamping assemblies. A connecting rod is arranged between the two chair frames, and the two chair frames and the connecting rod form an H-shaped seat. A leg baffle and a backrest plate are fixedly connected in the seat. Four sets of limiting assemblies are used for vertically adjusting the sitting plate and the headrest assembly and horizontally adjusting the arm placing assembly and the footrest assembly, so that the sitting height, the headrest height, the arm supporting position and the front and back position of the footrest are adjusted according to the height of the children. The cooperation of the adjusting screw rod, the moving seat and the hinge rod is used to adjust the angle of the footrest plate on the foot support assembly, which is suitable for cerebral palsy children with different heights, body shapes, leg lengths and arm lengths, so that each part of the body of the children is in a correct correction posture, and the sitting posture correction effect on the children is ensured.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology and relates to a posture correction chair, and more particularly to an adjustable posture correction chair for children with cerebral palsy. Background Technology

[0002] Children's posture correction chairs are important equipment used to help children develop correct sitting posture, prevent scoliosis, and assist special children with cerebral palsy, hemiplegia, etc. in rehabilitation training.

[0003] Chinese patent CN221179915U discloses a posture correction chair. When the user sits on the seat, their feet can only be placed on the footrest. When the footrest is pressed down, it moves downward, pulling the end block towards the vertical plate, causing the clamping rod to move towards the calf, thereby clamping the user's calf. Thus, when the user uses the chair, their calf must be clamped and they cannot cross their legs. After long-term use, the user's bad habit of crossing their legs is corrected, thus correcting their sitting posture.

[0004] The above solution still has the following problems: First, it can only make simple height adjustments, and the adjustment range is small and the precision is low, making it difficult to adapt to the specific needs of children of different heights and body types; Second, the restraint and fixation system uses simple buckles or Velcro for fixation, which is not secure and is easy to loosen, posing a safety hazard of children slipping. Summary of the Invention

[0005] The purpose of this invention is to provide an adjustable posture correction chair for children with cerebral palsy, addressing the shortcomings of existing technologies. Four sets of limiting components allow for vertical adjustment of the seat and headrest components, and lateral adjustment of the armrest and footrest components. This enables targeted adjustments to the sitting height, headrest height, arm support position, and footrest position based on the child's height. Furthermore, the adjustment screw, movable seat, and hinge rod allow for adjustment of the footrest angle on the footrest component. This design is suitable for children with cerebral palsy of different heights, body types, leg lengths, and arm lengths, ensuring that all parts of the child's body are in the correct corrective posture, thus guaranteeing effective posture correction.

[0006] The technical solution adopted in this invention: An adjustable posture correction chair for children with cerebral palsy includes two chair frames, a headrest assembly, a footrest assembly, four sets of limiting components, and three sets of clamping components.

[0007] A connecting rod is provided between the two chair frames, and the two chair frames and the connecting rod form an H-shaped chair seat. A leg guard and a backrest are fixedly connected inside the chair seat. A headrest structure is provided on the backrest. An armrest assembly is slidably provided on the top of the chair seat. A seat board is provided inside the chair seat.

[0008] All four sets of limiting components are mounted on the chair frame and are used to adjust the seat and headrest components vertically and the armrest and footrest components horizontally, respectively.

[0009] The chair back is provided with a triangular shoulder strap and a chest restraint strap, and the leg guard is provided with a leg restraint strap. The three sets of clamping components are used to adjust the tension of the triangular shoulder strap, the leg restraint strap and the chest restraint strap respectively.

[0010] As a further improvement of the present invention, the arm placement assembly includes a placement platform, the bottom surface of which has two guide grooves, and the upper surfaces of the two chair frames are fixedly connected to guide blocks. The two ends of the bottom surface of the placement platform are slidably connected to the two guide blocks through the guide grooves, and the two ends of the bottom surface of the placement platform are fixedly connected to connecting blocks.

[0011] As a further improvement of the present invention, the headrest structure includes a fixed seat fixedly connected to the backrest and a headrest assembly slidably connected to the fixed seat. The headrest assembly includes an opening frame, an anti-slip block and a pillow seat fixedly connected to the middle of the opening frame, and a guide groove is provided on the fixed seat, with one end of the anti-slip block slidably connected to the guide groove.

[0012] As a further improvement of the present invention, an arc-shaped groove is provided on the side of the pillow seat away from the opening frame, and the pillow seat is filled with sponge or silicone block.

[0013] As a further improvement of the present invention, the foot pedal assembly includes a foot pedal box, an adjustment groove is provided on the foot pedal box, a foot pedal is rotatably connected in the adjustment groove, an anti-slip texture is fixedly connected to the upper surface of the foot pedal, an adjustment screw is rotatably connected in the foot pedal box, and the adjustment screw and the foot pedal are arranged crosswise, one end of the adjustment screw passes through the foot pedal box and extends to the outside of the foot pedal box, a movable seat is threadedly connected to the adjustment screw, a hinge rod is hinged to the movable seat, and a hinge seat is hinged to the end of the hinge rod away from the movable seat, and the hinge seat is fixedly connected to the foot pedal.

[0014] As a further improvement of the present invention, a lifting block is fixedly connected to the bottom surface of the seat, and a lifting groove is provided on both chair frames. The two ends of the lifting block are slidably connected to the two lifting grooves respectively, and a backrest block is installed between the two chair frames.

[0015] As a further improvement of the present invention, each of the four sets of limiting components includes a storage box. The storage box has a first through hole, a moving cavity, and a second through hole. Both the second through hole and the first through hole are connected to the moving cavity. A linkage plate is slidably connected in the first through hole, and a push-pull rod is slidably connected in the second through hole. The four sets of linkage plates are respectively connected to the headrest assembly, the foot pedal assembly, the lifting block, and the arm placement assembly.

[0016] As a further improvement of the present invention, the linkage plate is provided with equally spaced limiting holes, one end of the push-pull rod is fixedly connected to a limiting ring, and the limiting ring is located in the moving cavity. A spring is sleeved on the push-pull rod, and the two ends of the spring abut against the limiting ring and the inner wall of the moving cavity, respectively.

[0017] As a further improvement of the present invention, the upper surface of the seat is inclined, and a crotch partition strap is fixedly connected to the lower end of the inclined surface. A guide roller seat is installed on the upper surface of the backrest. One end of the triangular shoulder strap is connected to the crotch partition strap by a buckle. The other end of the triangular shoulder strap passes through the guide roller seat and extends to one side of the backrest. One end of the chest restraint strap is fixedly connected to the backrest. One end of the leg restraint strap is fixedly connected to the leg guard.

[0018] As a further improvement of the present invention, all three sets of clamping components include a control box, the control box having an opening, a fixed rack being fixedly connected inside the opening, an adjusting bolt being threaded onto the control box, one end of the adjusting bolt being rotatably connected to a movable rack, and the movable rack being slidably connected inside the opening, teeth being provided on the sides of the movable rack and the fixed rack that are close to each other, and a triangular shoulder strap, chest restraint strap, or leg restraint strap being located between the fixed rack and the movable rack.

[0019] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses four sets of limiting components to adjust the vertical position of the seat and headrest components, and the lateral position of the armrest and footrest components. This allows for targeted adjustments to the sitting height, headrest height, arm support position, and footrest position based on the child's height. Furthermore, by adjusting the screw, moving seat, and hinge rod, the angle of the footrest on the footrest component can be adjusted. This invention is suitable for children with cerebral palsy of different heights, body types, leg lengths, and arm lengths, ensuring that all parts of the child's body are in the correct corrective posture and guaranteeing the effectiveness of posture correction.

[0020] 2. By setting up three sets of clamping components, the movable rack and fixed rack can be engaged and clamped by rotating the adjusting bolt to provide extremely strong clamping force. Even if the child is active or subjected to a large external force, the restraints will not loosen or slip off. Attached Figure Description

[0021] Figure 1 This is a three-dimensional view from one perspective of the present invention; Figure 2 This is a three-dimensional diagram from another perspective of the present invention; Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A; Figure 4 This is a schematic diagram of the headrest structure in this invention; Figure 5 This is a schematic diagram of the foot pedal assembly in this invention; Figure 6 This is a three-dimensional view of the limiting component in this invention; Figure 7 This is a cross-sectional view of the limiting component in this invention; Figure 8 This is a schematic diagram of the clamping component in the present invention; In the diagram: 1. Chair frame; 2. Connecting rod; 3. Seat; 4. Armrest assembly; 41. Placement platform; 42. Guide groove; 43. Guide block; 44. Connecting block; 5. Fixing base; 6. Headrest assembly; 61. Opening bracket; 62. Anti-slip block; 63. Guide groove; 64. Pillow seat; 65. Arc groove; 7. Limiting assembly; 71. Storage box; 72. First perforation; 73. Linkage plate; 74. Push-pull rod; 75. Moving cavity; 76. Limiting hole; 77. Second perforation; 78. Limiting ring; 79. Spring; 8. Footrest assembly; 1. Foot pedal box; 82. Adjustment groove; 83. Adjustment screw; 84. Moving seat; 85. Hinge rod; 86. Hinge seat; 87. Foot pedal; 88. Anti-slip texture; 9. Clamping assembly; 91. Control box; 92. Opening mouth; 93. Fixed rack; 94. Movable rack; 95. Adjusting bolt; 10. Chest restraint strap; 11. Triangular shoulder strap; 12. Leg guard; 14. Crotch partition strap; 15. Lifting block; 16. Lifting groove; 17. Leg restraint strap; 18. Guide roller seat; 19. Backrest block; 20. Chair back panel. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Example 1

[0023] Please see Figures 1 to 7 As shown, the present invention provides an adjustable posture correction chair for children with cerebral palsy, including two chair frames 1, a headrest assembly 6, a foot pedal assembly 8, four sets of limiting components 7, and three sets of clamping components 9.

[0024] A connecting rod 2 is provided between the two chair frames 1, and the two chair frames 1 and the connecting rod 2 form an H-shaped chair seat. A leg guard 12 and a backrest 20 are fixedly connected inside the chair seat. A headrest structure is provided on the backrest 20. An armrest placement component 4 is slidably provided on the top of the chair seat. A seat board 3 is provided inside the chair seat.

[0025] All four sets of limiting components 7 are installed on the chair frame 1, and are used to adjust the seat 3 and headrest assembly 6 vertically, and the armrest placement assembly 4 and footrest assembly 8 horizontally.

[0026] The chair back 20 is equipped with a triangular shoulder strap 11 and a chest restraint strap 10, and the leg panel 12 is equipped with a leg restraint strap 17. The three sets of clamping components 9 are used to adjust the tension of the triangular shoulder strap 11, the leg restraint strap 17 and the chest restraint strap 10 respectively.

[0027] Based on the above embodiments, the arm placement assembly 4 includes a placement platform 41. The bottom surface of the placement platform 41 has two guide grooves 42. The upper surfaces of the two chair frames 1 are fixedly connected to guide blocks 43. The two ends of the bottom surface of the placement platform 41 are slidably connected to the two guide blocks 43 through the guide grooves 42. The two ends of the bottom surface of the placement platform 41 are fixedly connected to connecting blocks 44.

[0028] The support table 41 is used to support the child's arm, allowing the arm to relax naturally and avoiding muscle fatigue, spasms, or abnormal posture caused by the arm being suspended in the air. At the same time, it can limit excessive arm movement and help maintain the correct posture of the upper body.

[0029] The connecting block 44 is used to connect with the corresponding limiting component 7 to lock the position of the placement platform 41, ensuring that the placement platform 41 will not move during use and providing stable support for the child's arm. Preferably, the headrest structure includes a fixed seat 5 fixedly connected to the backrest 20 and a headrest assembly 6 slidably connected to the fixed seat 5. The headrest assembly 6 includes an opening frame 61, an anti-slip block 62 and a pillow seat 64 fixedly connected to the middle of the opening frame 61, and a guide groove 63 is provided on the fixed seat 5, with one end of the anti-slip block 62 slidably connected to the guide groove 63.

[0030] The anti-detachment block 62 and the guide groove 63 work together to guide the headrest assembly 6 to slide smoothly in the vertical direction, ensuring the linearity of the headrest height adjustment, and to prevent the headrest assembly 6 from falling off the fixed seat 5, thereby improving the safety of the orthodontic chair.

[0031] Furthermore, an arc-shaped groove 65 is provided on the side of the pillow base 64 away from the opening frame 61, and the pillow base 64 is filled with sponge or silicone block.

[0032] The curved groove 65 is adapted to the contour of the child's head, which can increase the contact area between the head pillow and the child's head, distribute head pressure, avoid excessive local pressure that may cause discomfort to the child, and at the same time better restrict the left and right rotation of the head, maintain the correct head posture, and improve the comfort and corrective effect of the head pillow.

[0033] Sponges or silicone blocks have good elasticity and cushioning properties, which can effectively absorb vibrations and avoid hard contact that compresses the child's head. At the same time, they can adapt to the shape of the child's head, further improving the comfort of the support.

[0034] Preferably, the foot pedal assembly 8 includes a foot pedal box 81, an adjustment groove 82 is provided on the foot pedal box 81, a foot pedal 87 is rotatably connected in the adjustment groove 82, an anti-slip texture 88 is fixedly connected to the upper surface of the foot pedal 87, an adjustment screw 83 is rotatably connected in the foot pedal box 81, and the adjustment screw 83 and the foot pedal 87 are arranged crosswise, one end of the adjustment screw 83 passes through the foot pedal box 81 and extends to the outside of the foot pedal box 81, a movable seat 84 is threadedly connected to the adjustment screw 83, a hinge rod 85 is hinged to the movable seat 84, and a hinge seat 86 is hinged to the end of the hinge rod 85 away from the movable seat 84, and the hinge seat 86 is fixedly connected to the foot pedal 87.

[0035] Foot pedal 87 is used to support the child's feet, allowing the child's feet to be placed naturally, avoiding muscle fatigue and abnormal posture caused by the feet being suspended in the air, while also limiting excessive foot movement.

[0036] By rotating the adjusting screw 83, the moving seat 84 is moved, which in turn drives the foot pedal 87 to rotate around the pivot through the hinge rod 85. This allows for continuous stepless adjustment of the angle of the foot pedal 87, which can accurately adapt to the foot posture needs of different children. At the same time, by utilizing the self-locking property of the thread, the foot pedal 87 can be locked at any angle to ensure that the angle does not change during use.

[0037] Furthermore, a lifting block 15 is fixedly connected to the bottom surface of the seat 3, and lifting grooves 16 are provided on both chair frames 1. The two ends of the lifting block 15 are slidably connected to the two lifting grooves 16 respectively, and a backrest block 19 is installed between the two chair frames 1.

[0038] Preferably, each of the four sets of limiting components 7 includes a storage box 71. The storage box 71 has a first through hole 72, a moving cavity 75 and a second through hole 77. The second through hole 77 and the first through hole 72 are connected to the moving cavity 75. A linkage plate 73 is slidably connected in the first through hole 72 and a push-pull rod 74 is slidably connected in the second through hole 77. The four sets of linkage plates 73 are respectively connected to the headrest assembly 6, the foot pedal assembly 8, the lifting block 15 and the arm placement assembly 4.

[0039] One end of the push-pull rod 74 extends through the second perforation 77 to the outside of the storage box 71, forming an operating end, which is convenient for nursing staff to manually unlock.

[0040] Furthermore, the linkage plate 73 is provided with equally spaced limiting holes 76, one end of the push-pull rod 74 is fixedly connected to a limiting ring 78, and the limiting ring 78 is located in the moving cavity 75. A spring 79 is sleeved on the push-pull rod 74, and the two ends of the spring 79 abut against the limiting ring 78 and the inner wall of the moving cavity 75, respectively.

[0041] By inserting the push-pull rod 74 into different limiting holes 76, the adjustment component can be locked at different positions. The equally spaced limiting holes 76 can ensure adjustment accuracy and meet the personalized needs of different children.

[0042] After the push-pull rod 74 is pulled out of the limiting hole 76, the spring 79 remains in a compressed state, providing a continuous restoring force to the push-pull rod 74. When the push-pull rod 74 is released, the spring 79 can automatically push the push-pull rod 74 into the limiting hole 76 to achieve automatic locking without the need for additional locking operations.

[0043] The working principle of this embodiment is as follows: When using the device, first adjust the position of each component according to the child's height and body shape. When adjusting the height of the seat 3, pull the push-pull rod 74 of the corresponding limiting component 7 outward so that the insertion end of the push-pull rod 74 disengages from the limiting hole 76 on the linkage plate 73. At this time, the seat 3 can be moved up and down, and the lifting block 15 slides along the lifting groove 16. After adjusting to the target height, release the push-pull rod 74, the spring 79 returns to its original position, and push the push-pull rod 74 into the new limiting hole 76 to complete the locking.

[0044] Using the same method, the height of the headrest component 6, the front and back positions of the armrest component 4, and the front and back positions of the footrest component 8 are adjusted respectively. All adjustments can be completed by simply pulling the push-pull lever 74 with one hand to unlock. After releasing, it automatically locks. The operation is very simple and quick, and nursing staff can master it without professional training.

[0045] When adjusting the angle of the foot pedal 87, the adjusting screw 83 is rotated, which in turn drives the moving seat 84 to move along the axial direction of the adjusting screw 83. The foot pedal 87 is then rotated around the pivot through the hinge rod 85. After adjusting to the appropriate angle, the adjusting screw 83 is stopped. The angle is locked by utilizing the self-locking property of the thread, eliminating the need for an additional locking device. The structure is simple and reliable.

[0046] After all components are adjusted, place the child on the seat 3, with the child's back against the backrest 20, head against the curved groove 65 of the headrest 64, arms on the placement platform 41, and feet on the foot pedal 87, so that all parts of the child's body can be comfortably supported and maintain the correct sitting posture. Example 2

[0047] The difference between this embodiment and Embodiment 1 is that: Figure 1, Figure 2 and Figure 8 As shown, the upper surface of the seat 3 is inclined, and the lower end of the inclined surface is fixedly connected to the crotch partition strap 14. The upper surface of the backrest 20 is equipped with a guide roller seat 18. One end of the triangular shoulder strap 11 is connected to the crotch partition strap 14 by a buckle. The other end of the triangular shoulder strap 11 passes through the guide roller seat 18 and extends to one side of the backrest 20. One end of the chest restraint strap 10 is fixedly connected to the backrest 20. One end of the leg restraint strap 17 is fixedly connected to the leg guard 12.

[0048] By setting the guide roller 18, the direction of force on the triangular shoulder strap 11 can be changed, so that the tension of the triangular shoulder strap 11 is more evenly distributed on the child's shoulders, avoiding excessive force on one side and causing discomfort to the child. At the same time, it can reduce the friction between the triangular shoulder strap 11 and the chair back 20, making the tension adjustment of the triangular shoulder strap 11 smoother. All three clamping assemblies 9 include a control box 91. The control box 91 has an opening 92. A fixed rack 93 is fixedly connected inside the opening 92. An adjusting bolt 95 is threaded onto the control box 91. One end of the adjusting bolt 95 is rotatably connected to a movable rack 94, which is slidably connected inside the opening 92. Teeth are provided on the sides of the movable rack 94 and the fixed rack 93 that are close to each other. A triangular shoulder strap 11, a chest restraint strap 10, or a leg restraint strap 17 is located between the fixed rack 93 and the movable rack 94.

[0049] By rotating the adjusting bolt 95, the movable rack 94 is moved towards the fixed rack 93, so that the teeth of the two racks bite together and clamp the restraint strap, which can provide a very large clamping force. Even if the restraint strap is subjected to a large tension, it will not loosen, and the fixation is very firm and reliable. At the same time, by adjusting the gap between the two racks, the tension of the restraint strap can be continuously and steplessly adjusted, which can accurately adapt to the body shape and comfort needs of different children.

[0050] The usage process in this embodiment is as follows: When in use, place the child on the inclined surface of the seat board 3, with the child's groin positioned on both sides of the crotch partition strap 14. The weight of the inclined surface will cause the child's body to lean back naturally, while the crotch partition strap 14 will effectively prevent the child's body from sliding forward. Initial body fixation can be achieved without additional restraints, reducing the burden on the restraint straps and improving the child's comfort.

[0051] Next, the triangular shoulder strap 11 is wrapped around the child's shoulders and connected to the crotch partition strap 14 through a buckle. The other end of the triangular shoulder strap 11 extends around the guide roller 18 and into the corresponding clamping assembly 9. The triangular shoulder strap 11 can restrict the movement of the child's shoulders from above and prevent the child's upper body from leaning forward or bending to the left or right.

[0052] The chest restraint strap 10 is wrapped around the front of the child's chest, and both ends are connected to the corresponding clamping components 9. The chest restraint strap 10 can further fix the child's upper body and prevent the child's body from leaning backward.

[0053] The leg restraint strap 17 is wrapped around the front of the child's legs, and both ends are connected to the corresponding clamping components 9. The leg restraint strap 17 can fix the child's legs and prevent the child's legs from moving around and affecting the sitting posture.

[0054] Finally, rotate the adjusting bolts 95 of the three sets of clamping components 9 respectively, thereby driving the movable rack 94 to move towards the fixed rack 93, so that the teeth of the two racks bite and clamp the corresponding restraint straps, and adjust the tension of each restraint strap until the child is firmly fixed and feels comfortable.

[0055] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An adjustable posture correction chair for children with cerebral palsy, characterized in that, It includes two chair frames (1), a headrest assembly (6), a footrest assembly (8), four sets of limiting assemblies (7) and three sets of clamping assemblies (9); A connecting rod (2) is provided between the two chair frames (1), and the two chair frames (1) and the connecting rod (2) form an H-shaped chair seat. A leg baffle (12) and a backrest (20) are fixedly connected inside the chair seat. A headrest structure is provided on the backrest (20). An armrest placement assembly (4) is slidably provided on the top of the chair seat. A seat board (3) is provided inside the chair seat. The four sets of limiting components (7) are all set on the chair frame (1) and are used to adjust the seat (3) and headrest assembly (6) vertically and the armrest assembly (4) and footrest assembly (8) horizontally, respectively. The chair back (20) is provided with a triangular shoulder strap (11) and a chest restraint strap (10), and the leg guard (12) is provided with a leg restraint strap (17). The three sets of clamping components (9) are used to adjust the tension of the triangular shoulder strap (11), the leg restraint strap (17) and the chest restraint strap (10) respectively.

2. The adjustable posture correction chair for children with cerebral palsy according to claim 1, characterized in that, The arm placement assembly (4) includes a placement platform (41). The bottom surface of the placement platform (41) has two guide grooves (42). The upper surfaces of the two chair frames (1) are fixedly connected to guide blocks (43). The two ends of the bottom surface of the placement platform (41) are slidably connected to the two guide blocks (43) through the guide grooves (42). The two ends of the bottom surface of the placement platform (41) are fixedly connected to connecting blocks (44).

3. The adjustable posture correction chair for children with cerebral palsy according to claim 1, characterized in that, The headrest structure includes a fixed seat (5) fixedly connected to the backrest (20) and a headrest assembly (6) slidably connected to the fixed seat (5). The headrest assembly (6) includes an opening frame (61), an anti-slip block (62) and a pillow seat (64) are fixedly connected to the middle of the opening frame (61). A guide groove (63) is provided on the fixed seat (5), and one end of the anti-slip block (62) is slidably connected in the guide groove (63).

4. An adjustable posture correction chair for children with cerebral palsy according to claim 3, characterized in that, The pillow seat (64) has an arc-shaped groove (65) on the side away from the opening frame (61), and the pillow seat (64) is filled with sponge or silicone block.

5. An adjustable posture correction chair for children with cerebral palsy according to claim 1, characterized in that, The foot pedal assembly (8) includes a foot pedal box (81), an adjustment groove (82) is provided on the foot pedal box (81), a foot pedal (87) is rotatably connected in the adjustment groove (82), an anti-slip texture (88) is fixedly connected to the upper surface of the foot pedal (87), an adjustment screw (83) is rotatably connected in the foot pedal box (81), and the adjustment screw (83) and the foot pedal (87) are arranged in a cross configuration. One end of the adjustment screw (83) passes through the foot pedal box (81) and extends to the outside of the foot pedal box (81). A movable seat (84) is threadedly connected to the adjustment screw (83), a hinge rod (85) is hinged to the movable seat (84), and a hinge seat (86) is hinged to the end of the hinge rod (85) away from the movable seat (84), and the hinge seat (86) is fixedly connected to the foot pedal (87).

6. An adjustable posture correction chair for children with cerebral palsy according to claim 1, characterized in that, The bottom surface of the seat (3) is fixedly connected to a lifting block (15), and both chair frames (1) are provided with lifting grooves (16). The two ends of the lifting block (15) are slidably connected in the two lifting grooves (16), and a backrest block (19) is installed between the two chair frames (1).

7. An adjustable posture correction chair for children with cerebral palsy according to claim 6, characterized in that, Each of the four sets of limiting components (7) includes a storage box (71). The storage box (71) has a first through hole (72), a moving cavity (75) and a second through hole (77). The second through hole (77) and the first through hole (72) are connected to the moving cavity (75). A linkage plate (73) is slidably connected in the first through hole (72). A push-pull rod (74) is slidably connected in the second through hole (77). The four sets of linkage plates (73) are respectively connected to the headrest assembly (6), the foot pedal assembly (8), the lifting block (15) and the arm placement assembly (4).

8. An adjustable posture correction chair for children with cerebral palsy according to claim 7, characterized in that, The linkage plate (73) is provided with equal spacing limit holes (76), one end of the push-pull rod (74) is fixedly connected to a limit ring (78), and the limit ring (78) is located in the moving cavity (75). A spring (79) is sleeved on the push-pull rod (74), and the two ends of the spring (79) abut against the limit ring (78) and the inner wall of the moving cavity (75) respectively.

9. An adjustable posture correction chair for children with cerebral palsy according to claim 1, characterized in that, The upper surface of the seat (3) is inclined, and the lower end of the inclined surface is fixedly connected to the crotch partition (14). The upper surface of the backrest (20) is equipped with a guide roller seat (18). One end of the triangular shoulder strap (11) is connected to the crotch partition (14) by a buckle. The other end of the triangular shoulder strap (11) passes through the guide roller seat (18) and extends to one side of the backrest (20). One end of the chest restraint strap (10) is fixedly connected to the backrest (20). One end of the leg restraint strap (17) is fixedly connected to the leg guard (12).

10. An adjustable posture correction chair for children with cerebral palsy according to claim 9, characterized in that, All three clamping assemblies (9) include a control box (91), an opening (92) is provided in the control box (91), a fixed rack (93) is fixedly connected in the opening (92), an adjusting bolt (95) is threaded on the control box (91), a movable rack (94) is rotatably connected to one end of the adjusting bolt (95), and the movable rack (94) is slidably connected in the opening (92). The movable rack (94) and the fixed rack (93) are provided with teeth on their sides that are close to each other, and a triangular shoulder strap (11) or a chest restraint strap (10) or a leg restraint strap (17) is located between the fixed rack (93) and the movable rack (94).

Images