Physiological curve-adaptive nursing bed based on rigid origami mechanism

Abstract

The application discloses a physiological curve adaptive nursing bed based on a rigid origami mechanism, which comprises a bed frame, a back plate, a waist plate, a hip plate, a thigh plate and a calf plate; the back plate comprises a back outer side panel and a back adjusting mechanism arranged at the lower part of the back outer side panel; the hip plate comprises a hip left side panel, a hip right side panel and a hip adjusting mechanism; each panel of the back adjusting mechanism and the hip adjusting mechanism is folded based on the rigid origami theory, so that all the panels of the back adjusting mechanism jointly form a concave surface which is adapted to the back surface of a human body, and all the panels of the hip adjusting mechanism jointly form a concave surface which is adapted to the hip surface of the human body. The back plate, the waist plate and the hip plate are all composed of a plurality of panels; the rotary connection between the panels is regarded as a crease in the rigid origami mechanism; the folding movement between the panels is realized based on the rigid origami mechanism, so as to adapt to the physiological curve of the back and the hip of a patient in the sagittal plane and the horizontal plane, release the concentrated pressure generated by the back and the hip in the long-term supine state, and improve the use comfort.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of rehabilitation equipment, and particularly relates to a physiological curve adaptive nursing bed based on a rigid origami mechanism. BACKGROUND

[0002] The bed plate of an ordinary nursing bed is usually a single plane, and the bed plate shape cannot adapt to the physiological curve of the human back and hips in the sagittal plane. The single plane support provided for the curved surface shape protruding parts such as the back and hips of the human body is prone to cause pressure concentration on the curved surface shape protruding parts such as the back and hips of the human body and induce pressure sores for long-term bedridden patients. In addition, the insufficient support for the lumbar curve makes the lumbar long-term suspended and causes lumbar fatigue, and the comfort of the nursing bed is poor, which reduces the rehabilitation effect and the quality of life of the patients.

[0003] In order to improve the adaptability of the nursing bed to the physiological curve of the human body, the nursing bed bed plate mechanism based on the rigid origami theory disclosed in the application No. 202210504011.8 can realize the lifting of the back, the turning over of the body and the lifting of the leg by the folding movement of the folding lines between the plates to rotate the back plate, the hip plate, the thigh plate and the calf plate. The folding movement of each panel of the back plate makes the head support section and the waist support section convex in front, which supports the cervical spine and the lumbar spine. The chest support section and the lower back connecting section are concave in back, and the side curve of the chest support section is concave in back. The side curves of the chest lower support section, the waist support section and the lower back connecting section are convex in front to adapt to the back curve of the user in the lying position and improve the comfort of the nursing bed. Although the mechanism overcomes the defect that the nursing bed lacks support for the cervical spine and the lumbar spine of the user, it can only adapt to the physiological curve of the back of the human body in the sagittal plane and cannot release the concentrated pressure on the protruding parts such as the back and hips caused by long-term bed rest, i.e. it cannot adapt to the physiological curve of the back of the human body in the horizontal plane. Therefore, the present application designs a physiological curve adaptive nursing bed based on a rigid origami mechanism, which can adapt to the physiological curve of the protruding parts such as the back and hips of the human body in the sagittal plane and the horizontal plane, release the concentrated pressure caused by long-term bed rest, relieve fatigue and prevent pressure sores. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application aims to solve the technical problem of providing a physiological curve adaptive nursing bed based on a rigid origami mechanism.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0006] A physiological curve adaptive nursing bed based on rigid origami mechanism, comprising a bed frame, a back plate, a waist plate, a hip plate, a thigh plate and a calf plate; characterized in that the back plate comprises a back outer side panel and a back adjustment mechanism located at the lower part of the back outer side panel, and the hip plate comprises a hip left side panel, a hip right side panel and a hip adjustment mechanism; each panel of the back adjustment mechanism and the hip adjustment mechanism completes a folding movement based on the rigid origami theory, so that all panels of the back adjustment mechanism collectively form a concave surface that is adapted to the curved surface form of the human back to release the concentrated pressure on the scapula part; all panels of the hip adjustment mechanism collectively form a concave surface that is adapted to the curved surface form of the human hip to release the concentrated pressure on the hip.

[0007] Further, the back adjustment mechanism comprises a back left panel one, a back left panel two, a back left panel three, a back left panel four, a back central panel one, a back central panel two, a back right panel one, a back right panel two, a back right panel three, a back right panel four and a back adjustment push rod;

[0008] The upper side of the back central panel one is rotationally connected with the back outer side panel, and the back central panel one is simultaneously rotationally connected with the back left panel one and the back right panel one; the back left panel two is rotationally connected with the back left panel one and the back left panel three; the back left panel four is rotationally connected with the back left panel three, the back left panel one and the back central panel two; the back central panel two is simultaneously rotationally connected with the back central panel one and the back right panel four; the back right panel four is simultaneously rotationally connected with the back right panel one and the back right panel three; the back right panel two is rotationally connected with the back right panel three and the back right panel one; the fixed end of the back adjustment push rod is rotationally connected with the middle part of the bed frame, and the telescopic end of the back adjustment push rod is rotationally connected with the bottom of the back central panel two; the back left panel one, the back left panel four, the back central panel one, the back central panel two, the back right panel one and the back right panel four are folded downward relative to the back left panel two, the back left panel three, the back right panel two and the back right panel three by the back adjustment push rod, so as to form a concave surface that is adapted to the curved surface form of the human back.

[0009] Further, the hip adjustment mechanism comprises a hip left panel one, a hip left panel two, a hip central panel one, a hip central panel two, a hip right panel one, a hip right panel two, a hip support beam, a hip connecting rod and a hip adjustment push rod;

[0010] The two ends of the hip support beam are connected to the two sides of the middle of the bed frame. The upper side of the central hip panel is rotatably connected to the hip support beam. The central hip panel is rotatably connected to the left hip panel, the second central hip panel, and the right hip panel. The second left hip panel is rotatably connected to the left hip panel and the second central hip panel. The second right hip panel is rotatably connected to the second central hip panel and the first right hip panel. One end of the hip connecting rod is fixedly connected to the hip support beam, and the other end is rotatably connected to the fixed end of the hip adjustment push rod. The telescopic end of the hip adjustment push rod is rotatably connected to the bottom of the second central hip panel. The hip adjustment push rod causes the central hip panel and the second central hip panel to fold downward relative to the left hip panel, the second left hip panel, the first right hip panel, and the second right hip panel, forming a concave surface that conforms to the curvature of the human hip.

[0011] Furthermore, the lumbar support includes an adjusting handle, a handle connecting rod, and multiple panels; the multiple panels are rotatably connected, and the adjusting handle engages with the handle groove of the lumbar support frame of the bed frame and can slide back and forth within the handle groove; one end of the handle connecting rod is rotatably connected to the bottom of the middle panel, and the other end is rotatably connected to the adjusting handle; by changing the position of the adjusting handle in the handle groove, the folding movement between the panels is completed, so that the lumbar support forms an upward convex surface that conforms to the curvature of the human waist, thus providing support for the waist.

[0012] Furthermore, the nursing bed also includes a leg-raising mechanism; the leg-raising mechanism includes a leg-raising push rod and a calf plate connecting rod, the fixed end of the leg-raising push rod is rotatably connected to the bed frame, and the telescopic end of the leg-raising push rod is rotatably connected to the bottom of the thigh plate; one end of the calf plate connecting rod is rotatably connected to the bottom of the calf plate, and the other end is rotatably connected to the bed frame.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The bed board is divided into a backrest, lumbar support, hip support, thigh support, and calf support. These boards can rotate relative to each other, transforming the bed board from a flat surface to a curved surface. This converts the single-plane support of the nursing bed to multi-plane support, utilizing the physiological curve of the human back in the sagittal plane to allow for lying flat, leg-raising, and sitting positions. The backrest, lumbar support, and hip support are each composed of multiple panels. The rotational connections between these panels are considered as creases in a rigid origami mechanism. Based on this rigid origami mechanism, the panels fold, and some panels of the backrest and hip support form concave surfaces. This not only adapts to the physiological curves of the patient's back and buttocks in the sagittal and horizontal planes but also causes a slight downward concavity in the shoulder and buttock areas. This releases concentrated pressure on the back and buttocks from prolonged supine positions, alleviating fatigue, preventing discomfort caused by maintaining the same lying position for extended periods, reducing the incidence of pressure sores, and making it suitable for patients who are bedridden and have limited mobility. This improves the comfort of the nursing bed and reduces the workload of nursing staff.

[0015] 2. The waist plate is deformed based on the rigid origami theory to form a convex upper surface, which can adapt to the physiological curve of the waist of the patient in a supine position, avoid the waist suspension caused by the insufficient support of the nursing bed on the waist, and improve the comfort of the nursing bed. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0017] Figure 2 It is a side view of the present application;

[0018] Figure 3 It is a schematic diagram of the structure of the back plate of the present application;

[0019] Figure 4 It is a partial enlarged view of the bottom of the back plate of the present application;

[0020] Figure 5 It is a schematic diagram of the structure of the waist plate of the present application;

[0021] Figure 6 It is a partial enlarged view of one side of the waist plate of the present application;

[0022] Figure 7 It is a partial enlarged view of the other side of the waist plate of the present application;

[0023] Figure 8 It is a schematic diagram of the structure of the hip plate of the present application;

[0024] Figure 9 It is a partial enlarged view of the hip plate of the present application;

[0025] Figure 10 It is a schematic diagram of the structure of the leg lifting mechanism of the present application;

[0026] In the figure, 1 is a bed frame; 2 is a back plate; 3 is a waist plate; 4 is a hip plate; 5 is a thigh plate; 6 is a calf plate; 7 is a leg lifting mechanism;

[0027] 101-1, roller slide; 102-2, handle slide.

[0028] 101-1, roller slide; 102-2, handle slide. DETAILED DESCRIPTION

[0029] The technical solutions of the present application are described in detail below in combination with specific embodiments and drawings, and are not used to limit the protection scope of the present application.

[0030] The present application is a physiological curve adaptive nursing bed based on rigid origami mechanism (hereinafter referred to as nursing bed, see Figures 1-10 ), comprising a bed frame 1, a back plate 2, a waist plate 3, a hip plate 4, a thigh plate 5 and a calf plate 6; the lower side of the back plate 2 is rotationally connected with the upper side of the waist plate 3, the lower side of the hip plate 4 is rotationally connected with the upper side of the thigh plate 5, the left and right sides of the hip plate 4 are fixedly connected with the middle part of the overall support frame 101 of the bed frame 1, and the lower side of the thigh plate 5 is rotationally connected with the upper side of the calf plate 6.

[0031] The bed frame 1 comprises a whole support frame 101, a waist and back plate support frame 102 and a support frame lifting push rod 103; one end of the waist and back plate support frame 102 is rotationally connected with the middle part of the whole support frame 101, the fixed end of the support frame lifting push rod 103 is rotationally connected with the lower part of the whole support frame 101, and the telescopic end of the support frame lifting push rod 103 is rotationally connected with the cross beam in the middle part of the waist and back plate support frame 102; the rotation of the waist and back plate support frame 102 relative to the whole support frame 101 is realized through the support frame lifting push rod 103, and then the lifting movement of the whole back plate 2 and waist plate 3 is realized; one side of the lower part of the waist and back plate support frame 102 is provided with a handle sliding groove 102-1, and both sides of the lower part of the waist and back plate support frame 102 are provided with roller sliding grooves 102-2.

[0032] The back plate 2 comprises a back outer side panel 201 and a back adjusting mechanism; the back outer side panel 201 is fixed on the waist and back plate support frame 102, and the back adjusting mechanism is embedded in the lower part of the back outer side panel 201; the back adjusting mechanism comprises a plurality of panels, the plurality of panels realize the deformation of the back adjusting mechanism based on the rigid paper folding theory, and then release the concentrated pressure generated on the human back due to long-term bed rest, so as to relieve the fatigue of the human back; all the panels of the back adjusting mechanism are flush with the back outer side panel 201 during normal use, and play the role of supporting the human back.

[0033] The back adjusting mechanism comprises a back left one panel 202, a back left two panel 203, a back left three panel 204, a back left four panel 205, a back central one panel 206, a back central two panel 207, a back right one panel 208, a back right two panel 209, a back right three panel 210, a back right four panel 211 and a back adjusting push rod 212.

[0034] The upper side of the back central one panel 206 is rotationally connected with the back outer side panel 201, the left and right sides of the back central one panel 206 are respectively rotationally connected with the right side of the back left one panel 202 and the left side of the back right one panel 208, the left side of the back left one panel 202 is rotationally connected with one side of the back left two panel 203, the other side of the back left two panel 203 is rotationally connected with one side of the back left three panel 204, the other side of the back left three panel 204 is rotationally connected with the left side of the back left four panel 205, the upper side of the back left four panel 205 is rotationally connected with the lower side of the back left one panel 202, the right side of the back left four panel 205 is rotationally connected with the left side of the back central two panel 207, the upper side of the back central two panel 207 is rotationally connected with the lower side of the back central one panel 206, the right side of the back central two panel 207 is rotationally connected with the left side of the back right four panel 211, the upper side of the back right four panel 211 is rotationally connected with the lower side of the back right one panel 208, the right side of the back right four panel 211 is rotationally connected with one side of the back right three panel 210, the other side of the back right three panel 210 is rotationally connected with one side of the back right two panel 209, the other side of the back right two panel 209 is rotationally connected with the right side of the back right one panel 208; the fixed end of the back adjusting push rod 212 is rotationally connected with the crossbeam in the middle of the waist and back plate support frame 102, the telescopic end of the back adjusting push rod 212 is rotationally connected with the bottom of the back central two panel 207; the rotationally connected between each panel is regarded as the crease of the rigid paper folding mechanism, the folding between each panel is realized through the back adjusting push rod 212, and then the deformation of the back adjusting mechanism is realized.

[0035] The waist plate 3 comprises a waist left one panel 301, a waist left two panel 302, a waist left three panel 303, a waist central one panel 304, a waist central two panel 305, a waist central three panel 306, a waist right one panel 307, a waist right two panel 308, a waist right three panel 309, a roller 310, an adjusting handle 311, a handle connecting rod 312 and a locking nut 313.

[0036] The upper side of the waist central one panel 304 is rotationally connected with the lower side of the back outer side panel 201, the lower side of the waist central one panel 304 is rotationally connected with the upper side of the waist central two panel 305, the lower side of the waist central two panel 305 is rotationally connected with the upper side of the waist central three panel 306; the upper side of the waist left one panel 301 is rotationally connected with the left side of the waist central one panel 304, the lower side of the waist left one panel 301 is rotationally connected with the upper side of the waist left two panel 302, the right side of the waist left two panel 302 is rotationally connected with the left side of the waist central two panel 305, the lower side of the waist left two panel 302 is rotationally connected with the upper side of the waist left three panel 303, the lower side of the waist left three panel 303 is rotationally connected with the left side of the waist central three panel 306, the upper side of the waist right one panel 307 is rotationally connected with the right side of the waist central one panel 304, the lower side of the waist right one panel 307 is rotationally connected with the upper side of the waist right two panel 308, the left side of the waist right two panel 308 is rotationally connected with the right side of the waist central two panel 305, the lower side of the waist right two panel 308 is rotationally connected with the upper side of the waist right three panel 309, the lower side of the waist right three panel 309 is rotationally connected with the right side of the waist central three panel 306; the two ends of the lower side of the waist central three panel 306 are respectively rotationally installed with the rollers 310, the rollers 310 are matched with the corresponding roller sliding grooves 102-2 of the waist and back plate support frame 102, and can reciprocatingly slide in the roller sliding grooves 102-2; the adjusting handle 311 is matched with the handle sliding groove 102-1 of the waist and back plate support frame 102, the adjusting handle 311 can reciprocatingly slide in the handle sliding groove 102-1, and the fixed connection between the adjusting handle 311 and the waist and back plate support frame 102 is realized through the locking nut 313; one end of the handle connecting rod 312 is rotationally connected with the bottom of the waist central three panel 306, and the other end is rotationally connected with the adjusting handle 311; initially, all the panels of the waist plate 3 are flush, at this time, the adjusting handle 311 is located at one end of the handle sliding groove 102-1 adjacent to the bed tail, and the rollers 310 are also located at one end of the roller sliding groove 101-1 adjacent to the bed tail; when the waist plate 3 needs to be deformed, the adjusting handle 311 is manually pulled to slide in the handle sliding groove 102-1 towards the end of the bed head, the adjusting handle 311 slides at the same time to rotate the waist central three panel 306 through the handle connecting rod 312, the rollers 310 slide in the roller sliding groove 102-2 towards the end of the bed head, the rotation connection between each panel is regarded as the crease of the rigid paper folding mechanism, so the remaining panels rotate together with the waist central three panel 306, the whole waist plate 3 is bulged upwards, and then plays a supporting role on the human waist, avoids the waist from being suspended for a long time during bed lying, and relieves the waist fatigue.

[0037] The buttock plate 4 comprises a buttock left side plate 401, a buttock right side plate 402 and a buttock adjusting mechanism, the buttock left side plate 401 and the buttock right side plate 402 are fixedly installed at the left and right sides of the middle part of the overall support frame 101 respectively, and the buttock adjusting mechanism is located between the buttock left side plate 401 and the buttock right side plate 402; the buttock adjusting mechanism comprises a buttock left one panel 403, a buttock left two panel 404, a buttock central one panel 405, a buttock central two panel 406, a buttock right one panel 407, a buttock right two panel 408, a buttock support beam 409, a buttock connecting rod 410 and a buttock adjusting push rod 411.

[0038] Both ends of the buttock support beam 409 are fixedly connected with the two sides of the middle part of the overall support frame 101, the upper side of the buttock central one panel 405 is rotationally connected with the buttock support beam 409, the lower side of the buttock central one panel 405 is rotationally connected with the upper side of the buttock central two panel 406, one side of the buttock left one panel 403 is rotationally connected with the left side of the buttock central one panel 405, the other side of the buttock left one panel 403 is rotationally connected with one side of the buttock left two panel 404, the other side of the buttock left two panel 404 is rotationally connected with the left side of the buttock central two panel 406, one side of the buttock right one panel 407 is rotationally connected with the right side of the buttock central one panel 405, the other side of the buttock right one panel 407 is rotationally connected with one side of the buttock right two panel 408, the other side of the buttock right two panel 408 is rotationally connected with the right side of the buttock central two panel 406; one end of the buttock connecting rod 410 is fixedly connected with the buttock support beam 409, the other end is rotationally connected with the fixed end of the buttock adjusting push rod 411, the telescopic end of the buttock adjusting push rod 411 is rotationally connected with the bottom of the buttock central two panel 406, and deformation of the buttock adjusting mechanism is realized through the buttock adjusting push rod 411, so that concentrated pressure on the human buttocks is released, and buttock fatigue caused by long-term bed rest is relieved.

[0039] The lifting mechanism 7 comprises a lifting push rod 701 and a small leg plate connecting rod 702; the fixed end of the lifting push rod 701 is rotationally connected with the overall support frame 101, and the telescopic end of the lifting push rod 701 is rotationally connected with the bottom of the thigh plate 5; one end of the small leg plate connecting rod 702 is rotationally connected with the bottom of the small leg plate 6, and the other end is rotationally connected with the overall support frame 101, and deformation of the thigh plate 5 and the small leg plate 6 is realized through the lifting push rod 701.

[0040] The working principle and working process of the application are as follows:

[0041] The nursing bed is used as the initial state, at this time, the back plate 2, the waist plate 3, the hip plate 4, the thigh plate 5 and the calf plate 6 are flush, forming a complete bed plate, and the user lies flat on the nursing bed to rest; when the user needs to lift the back, the support frame lifting push rod 103 is elongated, the waist and back plate support frame 102 is counterclockwise rotated around its rotation center, the back plate 2 and the waist plate 3 are lifted as a whole, the back lifting movement is completed, and the user can sit on the nursing bed; when the user needs to lift the leg, the leg lifting push rod 701 is elongated, the thigh plate 5 is clockwise rotated, and the calf plate 6 is counterclockwise rotated due to the restriction of the calf plate connecting rod 702, and then the user's legs are lifted, and the rotation of the calf and the thigh is realized at the same time, the blood circulation of the legs is improved, and the discomfort of the legs caused by long-term bed rest is relieved.

[0042] When the back pressure needs to be released, the back adjusting push rod 212 is shortened, and the back central two panels 207 are rotated. Since the back adjusting mechanism is designed based on the rigid folding paper theory, the back central two panels 207 rotate to drive the remaining panels to rotate, deform the back adjusting mechanism, and make the back left one panel 202, the back left four panels 205, the back central one panel 206, the back central two panels 207, the back right one panel 208 and the back right four panels 211 fold downward relative to the back left two panels 203, the back left three panels 204, the back right two panels 209 and the back right three panels 210, to form a concave surface that can adapt to the curved surface of the human back. The user lies flat on the nursing bed, and the concave surface can disperse the concentrated pressure of the protruding parts such as the shoulder blades of the human body, reduce the concentrated pressure on the back caused by long-term bed rest, relieve fatigue and prevent pressure sores.

[0043] When the waist plate 3 needs to be adjusted, the nursing staff manually pulls the adjusting handle 311 to slide in the handle sliding groove 102-1 towards the end of the bed head, so that the handle connecting rod 312 rotates around the rotation axis of the handle connecting rod 312 and the waist central three panels 306, and the roller 310 slides in the roller sliding groove 101-1. The waist central three panels 306 drive the remaining panels to rotate, so that the waist central one panel 304, the waist central two panels 305 and the waist central three panels 306 are folded upward relative to the waist left one panel 301, the waist left two panels 302, the waist left three panels 303, the waist right one panel 307, the waist right two panels 308 and the waist right three panels 229, to form an upward convex surface that can adapt to the curved surface of the human waist, and the adjusting handle 311 is fixedly connected with the waist and back plate support frame 102 through the locking nut 313, so that the adjusting handle 311 is fixed at the current position to maintain the shape of the waist plate 3, and the deformation of the waist plate 3 is completed. The upward convex surface provides more sufficient support for the waist of the user, and reduces the discomfort caused by the suspension of the waist in the long-term bedridden state.

[0044] When the hip plate 4 needs to be adjusted, the hip adjustment push rod 411 is shortened, driving the hip central second panel 406 to rotate about the rotation axis of the hip central first panel 405, driving the hip central first panel 405 to rotate about the hip support beam 409, and driving the remaining panels to rotate together, so that the hip central first panel 405 and the hip central second panel 406 are folded downward relative to the hip left first panel 403, the hip left second panel 404, the hip right first panel 407 and the hip right second panel 408, forming a concave surface that can adapt to the curved surface of the human hip, so as to disperse the pressure on the hip, reduce the pressure concentration on the hip caused by long-term bed rest, improve the comfort, and prevent the occurrence of pressure sores.

[0045] In the above description, the directions or positional relationships indicated by "left", "right", "up", "down" and the like are all based on the directions or positional relationships shown in the drawings. Figure 1 The "clockwise" and "counterclockwise" are all based on the drawings. Figure 2

[0046] The unmentioned parts of the present application are applicable to the prior art.​

Claims

1. A physiological curve adaptive nursing bed based on a rigid origami mechanism, comprising a bed frame, a back plate, a waist plate, a hip plate, a thigh plate and a calf plate; characterized in that, The back plate comprises a back outer side panel and a back adjusting mechanism at the lower part of the back outer side panel, and the hip plate comprises a hip left side panel, a hip right side panel and a hip adjusting mechanism; each panel of the back adjusting mechanism and the hip adjusting mechanism is folded based on the rigid paper folding theory, so that all panels of the back adjusting mechanism form a concave surface which is adapted to the curved surface of the human back to release the concentrated pressure on the scapula, and all panels of the hip adjusting mechanism form a concave surface which is adapted to the curved surface of the human hip to release the concentrated pressure on the hip. The back adjusting mechanism comprises a back left one panel, a back left two panel, a back left three panel, a back left four panel, a back central one panel, a back central two panel, a back right one panel, a back right two panel, a back right three panel, a back right four panel and a back adjusting push rod. The upper side of the back central one panel is rotationally connected with the back outer side panel, and the back central one panel is rotationally connected with the back left one panel and the back right one panel at the same time; the back left two panel is rotationally connected with the back left one panel and the back left three panel; the back left four panel is rotationally connected with the back left three panel, the back left one panel and the back central two panel; the back central two panel is rotationally connected with the back central one panel and the back right four panel at the same time; the back right four panel is rotationally connected with the back right one panel and the back right three panel at the same time; the back right two panel is rotationally connected with the back right three panel and the back right one panel; the fixed end of the back adjusting push rod is rotationally connected with the middle part of the bed frame, and the telescopic end of the back adjusting push rod is rotationally connected with the bottom of the back central two panel; the back left one panel, the back left four panel, the back central one panel, the back central two panel, the back right one panel and the back right four panel are folded downward relative to the back left two panel, the back left three panel, the back right two panel and the back right three panel by the back adjusting push rod to form a concave surface which is adapted to the curved surface of the human back.

2. The physiologic curve-adaptive nursing bed based on the rigid origami mechanism according to claim 1, characterized in that, The hip adjusting mechanism comprises a hip left one panel, a hip left two panel, a hip central one panel, a hip central two panel, a hip right one panel, a hip right two panel, a hip support beam, a hip connecting rod and a hip adjusting push rod. The two ends of the hip support beam are connected with the two sides of the middle part of the bed frame, and the upper side of the hip central one panel is rotationally connected with the hip support beam; the hip central one panel is rotationally connected with the hip left one panel, the hip central two panel and the hip right one panel at the same time; the hip left two panel is rotationally connected with the hip left one panel and the hip central two panel at the same time; the hip right two panel is rotationally connected with the hip central two panel and the hip right one panel at the same time; one end of the hip connecting rod is fixedly connected with the hip support beam, and the other end is rotationally connected with the fixed end of the hip adjusting push rod; the telescopic end of the hip adjusting push rod is rotationally connected with the bottom of the hip central two panel; the hip central one panel and the hip central two panel are folded downward relative to the hip left one panel, the hip left two panel, the hip right one panel and the hip right two panel by the hip adjusting push rod to form a concave surface which is adapted to the curved surface of the human hip.

3. The physiologic curve-adaptive nursing bed based on the rigid origami mechanism according to claim 1, characterized in that, The waist plate comprises an adjusting handle, a handle connecting rod, a roller, a waist left panel one, a waist left panel two, a waist left panel three, a waist central panel one, a waist central panel two, a waist central panel three, a waist right panel one, a waist right panel two and a waist right panel three; the upper side of the waist central panel one is rotationally connected with the lower side of the back outer panel, the lower side of the waist central panel one is rotationally connected with the upper side of the waist central panel two, and the lower side of the waist central panel two is rotationally connected with the upper side of the waist central panel three; the upper side of the waist left panel one is rotationally connected with the left side of the waist central panel one, the lower side of the waist left panel one is rotationally connected with the upper side of the waist left panel two, the right side of the waist left panel two is rotationally connected with the left side of the waist central panel two, the lower side of the waist left panel two is rotationally connected with the upper side of the waist left panel three, the lower side of the waist left panel three is rotationally connected with the left side of the waist central panel three, the upper side of the waist right panel one is rotationally connected with the right side of the waist central panel one, the lower side of the waist right panel one is rotationally connected with the upper side of the waist right panel two, the left side of the waist right panel two is rotationally connected with the right side of the waist central panel two, the lower side of the waist right panel two is rotationally connected with the upper side of the waist right panel three, and the lower side of the waist right panel three is rotationally connected with the right side of the waist central panel three; the two ends of the lower side of the waist central panel three are respectively rotationally installed with rollers, the rollers are matched with roller sliding grooves corresponding to the waist and back plate support frames of the bed frame, and can reciprocatingly slide in the roller sliding grooves, the adjusting handle is matched with a handle sliding groove of the waist and back plate support frames of the bed frame and can reciprocatingly slide in the handle sliding groove; One end of the handle connecting rod is rotationally connected with the bottom of the waist central panel three, and the other end is rotationally connected with the adjusting handle; the folding movement between the panels is completed by changing the position of the adjusting handle in the handle sliding groove, so that the waist plate forms an upper convex surface which is adapted to the waist surface of the human body and supports the waist.

4. The physiologic curve-adaptive nursing bed based on the rigid origami mechanism according to claim 1 or 3, characterized in that, The nursing bed further comprises a leg lifting mechanism; the leg lifting mechanism comprises a leg lifting push rod and a lower leg plate connecting rod; the fixed end of the leg lifting push rod is rotationally connected with the bed frame, and the telescopic end of the leg lifting push rod is rotationally connected with the bottom of the upper thigh plate; one end of the lower leg plate connecting rod is rotationally connected with the bottom of the lower leg plate, and the other end is rotationally connected with the bed frame.

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