An intelligent nursing bed capable of realizing body position conversion and flexible turning function

Abstract

This invention discloses an intelligent nursing bed capable of position changing and flexible turning, belonging to the field of medical device technology, and suitable for the daily care of disabled elderly and long-term bedridden patients. The nursing bed includes a main body, a position changing mechanism, a flexible turning mechanism, an armrest and guardrail mechanism, a bed base mechanism, and a support frame. The main body is a five-piece frameless structure. The flexible turning mechanism consists of four sets, forming a height difference through a lever lifting component, and cooperating with a three-section turning rotating rod of a rotary drive component to pull the bed sheet, achieving flexible turning without rigid impact. The armrest and guardrail mechanism is a snap-on manual structure, balancing fall prevention safety with ease of getting in and out of bed. This invention solves the problems of redundant power source, secondary injury during turning, and structural interference in traditional nursing beds. It is easy to operate and runs stably, effectively reducing the workload of nursing staff and improving the comfort and safety of long-term bedridden patients.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an intelligent nursing bed that enables body position changes and flexible turning over. Background Technology

[0002] With the increasing aging of my country's population, the daily care needs of long-term bedridden patients are rising. For these patients, daily positional changes and turning are necessary to improve blood circulation in pressure-affected areas and prevent pressure ulcers. As a core aspect of care, the function and performance of the nursing bed directly impact the patient's experience and the efficiency of nursing staff.

[0003] Existing nursing beds are functionally limited in practical applications and cannot meet the nursing requirements of both clinical and home settings. Firstly, the power sources for position changes are redundant. Most nursing beds have a corresponding number of power sources based on the number of moving components, resulting in complex structures, high manufacturing costs, and the integrated position change structure is prone to dead-point issues with the push rods, making coordination between various drive mechanisms difficult. Secondly, the turning function is mostly a rigid design, directly pushing the patient to turn by folding the bed board. This can easily generate rigid impacts, posing a risk of secondary injury to the patient. Some flexible turning solutions, such as air beds and waterbeds, have difficulties in controlling the fluidity of the medium. Thirdly, some nursing beds use a multi-piece bed board structure with a bed frame, which can easily cause displacement of the bed sheet's fixing points during position changes, resulting in significant deformation of the bed sheet and increasing the workload of changing sheets for nursing staff. Fourthly, most nursing beds have poor functional integration, emphasizing a single function while lacking protective structures that balance safety and convenience.

[0004] Therefore, developing a compact, low-cost, fully functional, and stable intelligent nursing bed with position changing and flexible turning functions has become an urgent technical problem to be solved in this field. Summary of the Invention

[0005] This invention provides an intelligent nursing bed that enables body position changes and flexible turning over, solving the problems mentioned in the background art.

[0006] The present invention provides the following technical solution: an intelligent nursing bed that can realize body position change and flexible turning functions, including a bed body, a body position change mechanism disposed on the bed body, a flexible turning mechanism symmetrically disposed at both ends of the bed body, an arm guardrail mechanism disposed on both sides of the bed body, a bed base mechanism, and a support frame connecting the bed body and the bed base mechanism.

[0007] As a preferred embodiment of the present invention, the main body of the bed is a five-piece frameless structure, including a headboard, a footboard, a backboard, a thigh board, and a calf board; the thigh board is a fixed board, and the backboard and thigh board are connected by hinges; the headboard and footboard are vertically connected to the two ends of the backboard and calf board.

[0008] As a preferred embodiment of the present invention, the bed base mechanism includes two symmetrically distributed base steel pipes, a first support steel pipe, a second support steel pipe, a support shaft, a wheel protective sleeve, and four universal wheels with braking function; the first support steel pipe and the second support steel pipe are fixedly arranged between the two base steel pipes.

[0009] As a preferred embodiment of the present invention, the support frame includes two symmetrical support square tubes, an H-shaped support plate, a connecting square tube, and a support connecting tube; the connecting square tube is installed between the two symmetrical support square tubes, and the support connecting tube is fixed between the two symmetrical support square tubes and the H-shaped support plate.

[0010] As a preferred embodiment of the present invention, the posture transformation mechanism includes a sitting posture transformation component and a standing posture transformation component. The sitting posture transformation component consists of a first push rod motor, a second push rod motor, and a parallelogram linkage mechanism. The first push rod motor and the second push rod motor have the same structure and are symmetrically arranged. The push rod cylinder end is hinged to the H-shaped support plate, and the output end is hinged to the middle of the back plate. The parallelogram linkage mechanism includes a first parallelogram rod and a second parallelogram rod. One end of the first parallelogram rod is hinged to the lower end of the back plate, and the other end is hinged to the second parallelogram rod. The other end of the second parallelogram rod is hinged to the middle of the calf plate.

[0011] As a preferred embodiment of the present invention, the posture changing component comprises a third push rod motor, an L-shaped hinge plate, a reinforcing connecting rod, and a U-shaped connecting plate; the long end of the L-shaped hinge plate is symmetrically welded to both sides of the thigh plate, and the short end of the L-shaped hinge plate is symmetrically hinged to the base steel pipe; the reinforcing connecting rod connects the two L-shaped hinge plates; the upper end of the U-shaped connecting plate is fixedly disposed in the middle of the reinforcing connecting rod; the output end of the third push rod motor is hinged to the lower end of the U-shaped connecting plate, and the cylinder end is hinged to the second supporting steel pipe.

[0012] As a preferred embodiment of the present invention, the flexible turning mechanism comprises four sets, one set on each side of the headboard and footboard. Each set includes a lever lifting assembly and a rotation drive assembly. The lever lifting assembly consists of a small electric push rod, a lever body, a sliding block, and a slider guide rail. The slider guide rail is vertically fixed to both sides of the headboard or footboard. The sliding block slides with the slider guide rail. The lever body is hinged in the middle to the fixing plate of the headboard or footboard, with one end hinged to the small electric push rod and the other end hinged to the sliding block.

[0013] As a preferred embodiment of the present invention, the rotation drive assembly includes a brushless rotary motor, a three-section turning and rotating rod, and a U-shaped fixing plate; the rotary motor is fixed to the sliding block by the U-shaped fixing plate, and the output end is connected to the three-section turning and rotating rod. The three-section turning and rotating rod is designed in sections corresponding to the back plate, thigh plate, and calf plate, and each section is flexibly connected to the other.

[0014] As a preferred embodiment of the present invention, the arm plate guardrail mechanism includes an arm plate bottom support, a hand plate, a support arm body, an upper rotating support, a lower rotating support, a spring support, a compression spring, and a buckle button limiting slider. The lower end of the arm plate bottom support is fixedly mounted on the support square tube. There are five support arm bodies on each side, namely the first to fifth support arm bodies. The second to fifth support arm bodies have the same structure and connection method. The following description only uses the first and second support arms as examples. The bottom end of the lower rotating support is fixedly mounted on the arm plate bottom support. The bottom ends of the first to fifth support arm bodies are hinged to the lower rotating support. The upper end of the first support arm is hinged to the spring support. The upper end of the second support arm is hinged to the upper rotating support. The spring support and the upper rotating support are fixedly connected to the hand plate. The buckle button is located at the upper end of the first support arm. When the buckle button is locked, the support arm body remains vertical to form a guardrail. When unlocked, the support arm body can rotate horizontally around the axis of rotation.

[0015] As a preferred embodiment of the present invention, the back plate includes a plate body, a controller module, and a pressure sensor. A pressure plate is slidably connected to the inner wall of the plate body. A pressure rod is installed at the bottom of the pressure plate. A pressure ring is installed on the outer wall of the pressure rod. A tension spring is provided at the bottom of the pressure ring. The end of the tension spring away from the pressure ring overlaps with the inner wall of the plate body. A locking block is installed at the bottom of the pressure plate. A locking groove is formed on the outer wall of the locking block. A threaded screw is rotatably connected to the inner wall of the plate body. A limit rod is installed on the inner wall of the plate body. A sliding frame is slidably connected to the inner wall of the plate body. A pin and a screw nut are respectively installed on both sides of the sliding frame. The limit rod passes through the sliding frame. The diameter of the pin is adapted to the inner wall of the locking groove.

[0016] The present invention has the following beneficial effects: 1. This invention integrates a flexible turning mechanism on both sides of the headboard and footboard. The five-piece frameless bed body provides ample space for the movement of both mechanisms, and the three-section turning rotation rod precisely corresponds to the segmented design of the bed board for position changes. When the bed board completes the angle adjustment from lying down to sitting to standing, the turning rotation rod experiences no compression or jamming, solving the problem of interference between the two core mechanisms in traditional nursing beds. This achieves functional integration, resulting in high practicality and adaptability. Compared to existing position-changing nursing beds that configure power sources based on the number of moving components, this invention adopts a layered design, using electricity... The machine, along with a parallelogram linkage mechanism, enables the coordinated rotation of the backrest and leg rests, facilitating the transition from a lying to a sitting position. The upper structure of the bed is adjusted via a power source and hinge plate rotation structure, allowing for a transition from a lying to a standing position. Only three push-rod motors are used for all position changes, avoiding the dead-point problem of push-rods in integrated structures. This simplifies the control logic and significantly reduces equipment failure rates. Compared to existing lever-type turning mechanisms that rely solely on roller lifting and turning cloth traction, this invention integrates the power end of the lever-type lifting mechanism into the headboard and footboard, replacing the bed... The frame installation method further reduces the vertical space required for the equipment, making the overall nursing bed more compact. Secondly, the innovative design of a three-section turning rotating rod replaces the traditional one-piece roller, adapting to changes in the bed board angle during positional changes and avoiding long-term fatigue damage to the turning components. Simultaneously, the turning method using the rotating rod to pull the bed sheet is gentler than roller-type contact, and the precise height difference created by the lifting and lowering of four sets of symmetrical levers allows the patient's center of gravity to shift slowly without rigid impact, solving the problem of limited turning angles and the risk of secondary injury in existing flexible turning solutions. This invention differs from existing multi-piece bed frame designs. This bed-board nursing bed eliminates the separate bed frame design, directly connecting the headboard and bed board to the backrest and legboard vertically. The thigh board acts as a fixed board to bear the load. During changes in body position, the fixed points of the bed sheet do not shift relative to each other, avoiding significant deformation of the bed sheet caused by the relative movement of the bed board and bed frame, thus reducing the workload of nursing staff in changing bed sheets. This invention adopts a motorless snap-on arm guardrail structure, which locks and unlocks the guardrail through the cooperation of snap buttons and limit sliders. When the main body of the support arm is vertical, it forms a stable anti-fall guardrail, and when laid flat, it does not affect the patient's getting in and out of bed, making it easy to operate.

[0017] 2. This intelligent nursing bed, capable of positional changes and flexible turning, works by having the patient lie flat on the backrest, thigh rest, and calf rest at night. The patient's weight presses the pressure plate downwards, causing the pressure plate to move the pressure rod and pressure ring downwards. This allows the pressure rod to contact the pressure sensor, activating the sensor. Simultaneously, the controller module senses this activation. When the patient gets up at night, their back disengages from the pressure plate, causing the tension spring to rebound and push the pressure ring upwards. The pressure ring then moves the pressure plate and pressure rod upwards, separating the pressure rod from the pressure sensor. This deactivates the pressure sensor, and the controller module detects that the pressure sensor is no longer activated. The controller module sends information to the terminal via its built-in internet module, thus reminding medical staff or caregivers. Simultaneously, pressing down on the pressure plate moves the locking block and locking groove downwards, bringing the locking groove to the outside of the pin. Rotating the threaded screw causes the threaded connection with the screw nut to move the screw nut, which in turn moves the sliding bracket and the pin, causing the pin to move inwards to fix the locking groove. This, in turn, fixes the pressure plate. At this point, the pressure plate is at its lowest point, ensuring the pressure rod and pressure sensor are always in contact, thus keeping the pressure sensor constantly activated. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of an embodiment of the present invention; Figure 2 This is a front view of an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the nursing bed in a sitting position according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the nursing bed in a standing position according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the flexible turning device according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the arm panel guardrail according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the bed board structure according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the backplate structure of the present invention; Figure 9 This is a schematic diagram of the cross-sectional structure of the back plate of the present invention; Figure 10 This is a schematic diagram of the threaded lead screw structure of the present invention; Figure 11 For the present invention Figure 10 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Bed frame; 11. Headboard; 12. Footboard; 13. Backrest; 131. Panel; 132. Pressure plate; 133. Controller module; 134. Pressure rod; 135. Pressure ring; 136. Tension spring; 137. Pressure sensor; 138. Locking block; 139. Locking groove; 1310. Threaded screw; 1311. Limiting rod; 1312. Sliding frame; 1313. Threaded screw nut; 1314. Pin; 14 15. Thigh plate; 2. Lower leg plate; 2. Posture changing mechanism; 21. Sitting posture changing component; 211. First push rod motor; 212. Second push rod motor; 213. Parallelogram linkage mechanism; 2131. First parallelogram rod; 2132. Second parallelogram rod; 22. Standing posture changing component; 221. Third push rod motor; 222. L-shaped hinge plate; 223. Reinforcing connecting rod; 224. U-shaped connecting plate; 3. Flexible flipping mechanism 31. Body mechanism; 312. Lever lifting assembly; 313. Small electric push rod; 314. Lever body; 315. Sliding block; 316. Sliding guide rail; 32. Rotary drive assembly; 327. Brushless rotary motor; 328. Three-section turning and rotating rod; 329. U-shaped fixing plate; 40. Arm plate guardrail mechanism; 41. Arm plate bottom support; 42. Hand plate; 43. Support arm body; 431. First support arm; 432. Second support arm; 44. Upper rotating support; 45. Lower rotating support; 46. Spring support; 47. Compression spring; 48. Snap-button; 49. Limiting slider; 5. Bed base mechanism; 51. Base steel pipe; 52. First support steel pipe; 53. Second support steel pipe; 54. Support shaft; 55. Wheel protective sleeve; 56. Casters; 6. Support frame; 61. Support square tube; 62. H-shaped support plate; 63. Connecting square tube; 64. Support connecting pipe. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1 - Figure 11 An intelligent nursing bed capable of changing body position and flexibly turning over includes a bed body 1, a body position changing mechanism 2 mounted on the bed body 1, flexibly turning over mechanisms symmetrically mounted at both ends of the bed body 1, armrest guardrail mechanisms 4 mounted on both sides of the bed body 1, a bed base mechanism 5, and a support frame 6 connecting the bed body 1 and the bed base mechanism 5; the parts of each mechanism are connected by hinges, welding or bolts to ensure the stability of the overall structure.

[0022] In a preferred embodiment, the main body 1 of the bed is a five-piece frameless structure, including a headboard 11, a footboard 12, a backrest 13, a thigh board 14, and a calf board 15; the thigh board 14 is a fixed board, and the backrest 13 is connected to the thigh board 14 and the calf board 15 by hinges; the headboard 11 and the footboard 12 are vertically connected to the two ends of the backrest 13 and the calf board 15.

[0023] In the above structure, the headboard 11 and the footboard 12 are vertically fixed to the back panel 13 and the leg panel 15 by bolts. There is no independent bed frame design, which reduces the overall size of the bed and avoids the problem of bed sheet deformation caused by relative movement between the bed frame and the bed board.

[0024] In a preferred embodiment, the bed base mechanism 5 includes two symmetrically distributed base steel pipes 51, a first support steel pipe 52, a second support steel pipe 53, a support shaft 54, a wheel protective sleeve 55, and four universal wheels 56 with braking function; the first support steel pipe 52 and the second support steel pipe 53 are fixedly arranged between the two base steel pipes 51.

[0025] In the above structure, the bed base mechanism 5 is an integral support, with two base steel pipes 51 arranged in parallel. The two ends of the first support steel pipe 52 and the second support steel pipe 53 are fixed between the two base steel pipes 51 by welding. Four casters 56 are installed on the lower end of the base steel pipes 51 by bolts, and each caster 56 is equipped with an independent braking structure. The two wheels are braked synchronously through the support shaft 54, so as to realize the free movement and fixed point fixation of the nursing bed. The wheel protective sleeve 55 is fitted on the outside of the casters 56 to prevent the wheels from scraping the ground or hitting obstacles during movement.

[0026] In a preferred embodiment, the support frame 6 includes two symmetrical support square tubes 61, an H-shaped support plate 62, a connecting square tube 63, and a support connecting tube 64; the connecting square tube 63 is installed between the two symmetrical support square tubes 61, and the support connecting tube 64 is fixed between the two symmetrical support square tubes 61 and the H-shaped support plate 62.

[0027] In the above structure, the connection between the supporting square tube 61, the H-shaped supporting plate 62, the H-shaped supporting plate 62 and the supporting connecting tube 64 enables the bed body 1 and the body position changing mechanism 2 to be supported by the support frame 6 as a whole, so that the bed body 1 and the body position changing mechanism 2 can be supported in different ways by the support frame 6 when the shape is adjusted.

[0028] In a preferred embodiment, the posture changing mechanism 2 includes a sitting posture changing component 21 and a standing posture changing component 22. The sitting posture changing component 21 consists of a first push rod motor 211, a second push rod motor 212, and a parallelogram linkage mechanism 213. The first push rod motor 211 and the second push rod motor 212 have the same structure and are symmetrically arranged. The push rod cylinder end is hinged to the H-shaped support plate 62, and the output end is hinged to the middle of the back plate 13. The parallelogram linkage mechanism 213 includes a first parallelogram rod 2131 and a second parallelogram rod 2132. One end of the first parallelogram rod 2131 is hinged to the lower end of the back plate 13, and the other end is hinged to the second parallelogram rod 2132. The other end of the second parallelogram rod 2132 is hinged to the middle of the calf plate 15. In a preferred embodiment, the posture changing component 22 consists of a third push rod motor 221, an L-shaped hinge plate 222, a reinforcing link 223, and a U-shaped connecting plate 224. The long ends of the L-shaped hinge plates 222 are symmetrically welded to both sides of the thigh plate 14, and the short ends of the L-shaped hinge plates 222 are symmetrically hinged to the base steel pipe 51. The reinforcing link 223 connects the two L-shaped hinge plates 222. The upper end of the U-shaped connecting plate 224 is fixedly set in the middle of the reinforcing link 223. The output end of the third push rod motor 221 is hinged to the lower end of the U-shaped connecting plate 224, and the cylinder end is hinged to the second support steel pipe 53.

[0029] In the above structure, the body position transformation mechanism 2 includes a sitting posture transformation component 21 and a standing posture transformation component 22, which respectively realize the body position changes of the nursing bed from lying down to sitting and from lying down to standing. The two components work independently without motion interference. The sitting posture changing component 21 consists of a first push rod motor 211, a second push rod motor 212, and a parallelogram linkage mechanism 213. The first push rod motor 211 and the second push rod motor 212 have the same structure and are arranged symmetrically from left to right. The cylinder ends of the push rods are hinged to the upper surface of the H-shaped support plate 62 through fisheye bearings, and the output ends are hinged to the middle position of the back plate 13. The two motors drive synchronously to improve the stability of the back plate 13 when rotating. The parallelogram linkage mechanism 213 includes a first parallelogram rod 2131 and a second parallelogram rod 2132. One end of the first parallelogram rod 2131 is hinged to the lower end of the back plate 13, and the other end is hinged to one end of the second parallelogram rod 2132. The other end of the second parallelogram rod 2132 is hinged to the middle position of the calf plate 15, forming an open parallelogram linkage structure. When the first push rod motor 211 and the second push rod motor 212 extend synchronously, the bottom ends of the first push rod motor 211 and the second push rod motor 212 are hinged to the support frame (6), and their telescopic ends are hinged to the bottom of the back plate 13. When the second push rod motor 212 extends synchronously, the support frame (6) serves as the support base, pushing the back plate 13 to rotate upward around the hinge point with the thigh plate 14. The back plate 13 drives the first parallelogram rod 2131 to move synchronously, pulling the second parallelogram rod 2132 to drive the calf plate 15 to rotate downward around the hinge point with the thigh plate 14. This allows the nursing bed to change position from lying down to sitting. The backrest 13 can rotate to 80 to 90 degrees, and the leg rest 15 can rotate to 80 to 90 degrees simultaneously to meet the patient's comfort needs in sitting position. The reinforcing connecting rod 223 is set laterally, and its two ends are welded and fixed to the middle of the two L-shaped hinge plates 222 respectively, which enhances the synchronization and structural strength of the two L-shaped hinge plates 222. The upper end of the U-shaped connecting plate 224 is fixed to the middle position of the reinforcing connecting rod 223 by bolts. The output end of the third push rod motor 221 is hinged to the lower end of the U-shaped connecting plate 224, and the cylinder end is hinged to the second support steel pipe 53 of the bed base mechanism 5. When the third push rod motor 221 extends, it pushes the U-shaped connecting plate 224 to drive the reinforcing connecting rod 223 to move, which in turn pulls the two L-shaped hinge plates 222 to rotate around the hinge point with the base steel pipe 51, causing the bed body 1 to rotate upward around the hinge point, realizing the change of the nursing bed from lying down to standing. The bed body 1 can rotate up to 70 degrees without the need for manual assistance from nursing staff.

[0030] In a preferred embodiment, the flexible turning mechanism 3 consists of four sets, one set on each side of the headboard 11 and the footboard 12. Each set includes a lever lifting assembly 31 and a rotary drive assembly 32. The lever lifting assembly 31 is composed of a small electric push rod 311, a lever body 312, a sliding block 313, and a slider guide rail 314. The slider guide rail 314 is vertically fixed on both sides of the headboard 11 or the footboard 12. The sliding block 313 is slidably engaged with the slider guide rail 314. The lever body 312 is hinged in the middle to the fixing plate of the headboard 11 or the footboard 12, with one end hinged to the small electric push rod 311 and the other end hinged to the sliding block 313. In a preferred embodiment, the rotation drive assembly 32 includes a brushless rotary motor 321, a three-section turning and rotating rod 322, and a U-shaped fixing plate 323. The rotary motor is fixed to the sliding block 313 via the U-shaped fixing plate 323, and its output end is connected to the three-section turning and rotating rod 322. The three-section turning and rotating rod 322 is designed in segments corresponding to the back plate 13, thigh plate 14, and calf plate 15, and each segment is flexibly connected to the other.

[0031] In the above structure, the flexible turning mechanism 3 of the present invention consists of four sets, one set on each side of the headboard 11 and the other on each side of the footboard 12. The four sets of mechanisms have the same structure and can be linked synchronously. Each set includes a lever lifting component 31 and a rotation drive component 32. After the height difference is formed by lifting, the rotation of the rotating component is used to pull the bed sheet to achieve flexible turning without rigid impact. Each lever lifting assembly 31 consists of a small electric push rod 311, a lever body 312, a sliding block 313, and a slider guide rail 314. The slider guide rail 314 is vertically fixed to both sides of the headboard 11 or footboard 12 by bolts, and the sliding block 313 slides in conjunction with the slider guide rail 314. The middle part of the lever body 312 is hinged to a fixed plate on the headboard 11 or footboard 12 via a hinge shaft. One end of the lever body 312 is hinged to the output end of the small electric push rod 311, and the cylinder end of the small electric push rod 311 is hinged to the bottom of the headboard 11 or footboard 12. The other end of the lever body 312 is hinged to the sliding block 313, forming a lever lifting structure. Utilizing the lever principle, the short-stroke extension and retraction of the small electric push rod 311 can drive the sliding block 313 to achieve a long-stroke vertical lifting and lowering. The four sets of lever lifting assemblies 31 work together to realize the lifting and lowering of the left or right turning rotation lever, changing the patient's center of gravity. The rotary drive assembly 32 consists of a brushless rotary motor 321, a three-section turning and rotating rod 322, and a U-shaped fixing plate 323. The U-shaped fixing plate 323 is bolted to the outside of the sliding block 313. The brushless rotary motor 321 is bolted to the U-shaped fixing plate 323 and moves vertically up and down synchronously with the sliding block 313. The output end of the brushless rotary motor 321 is connected to the three-section turning and rotating rod 322 via a coupling. The three-section turning and rotating rod 322 corresponds to the backrest 13, thigh board 14, and calf board 15 of the bed body 1. Each section is connected by a flexible connector to adapt to the angle change of the bed board during the change of body position and to avoid the turning and rotating rod being squeezed and deformed due to the rotation of the bed board. A nursing sheet is laid on the three-section turning and rotating rod 322. When a height difference is formed, the turning and rotating rod pulls the sheet from the lower position to the higher position, which, in conjunction with the shift of the patient's center of gravity, achieves flexible turning.

[0032] In a preferred embodiment, the arm plate guardrail mechanism 4 includes an arm plate bottom support 41, a hand plate 42, a support arm body 43, an upper rotating support 44, a lower rotating support 45, a spring support 46, a compression spring 47, a buckle button 48, and a limiting slider 49. The lower end of the arm plate bottom support 41 is fixedly mounted on the support square tube 61. Each side of the support arm body 43 consists of five bodies, namely the first to the fifth support arm bodies 43. The second to fifth support arm bodies 43 have the same structure and connection method. The following only takes the first support arm 431 and the second support arm 432 as examples. To explain, the lower rotating support 45 is fixedly mounted on the bottom support 41 of the arm plate. The bottom ends of the first to fifth support arm bodies 43 are hinged to the lower rotating support 45. The upper end of the first support arm 431 is hinged to the spring support 46. The upper end of the second support arm 432 is hinged to the upper rotating support 44. The spring support 46 and the upper rotating support 44 are fixedly connected to the hand plate 42. The buckle button 48 is located on the upper end of the first support arm 431. When the buckle button 48 is locked, the support arm body 43 remains vertical to form a guardrail. When unlocked, the support arm body 43 can rotate horizontally around the axis of rotation.

[0033] In the above structure, the arm guardrail mechanism 4 of the present invention is symmetrically arranged on both sides of the support frame 6 under the main body of the bed, with one set on each side. Each set includes a bottom support 41 for the arm guardrail, a hand plate 42, a support arm body 43, an upper rotating support 44, a lower rotating support 45, a spring support 46, a compression spring 47, a limit slider 49, and a buckle button 48. The lower end of the arm plate bottom support 41 is fixed to the support square tube 61 of the support frame 6 by bolts; the bottom end of the lower rotating support 45 is fixed to the upper end of the arm plate bottom support 41, and the bottom ends of the first to fifth support arms are all hinged to the lower rotating support 45 through hinge shafts, and can rotate freely around the hinge shafts; the upper end of the first support arm 431 is hinged to the lower end of the spring support 46 through a hinge, and the upper ends of the second to fifth support arms are all hinged to the upper rotating support 44 through a hinge. The upper ends of the spring support 46 and the upper ends of the upper rotating support 44 are all fixedly connected to the bottom of the hand plate 42 by bolts to form an integral guardrail frame. The surface of the hand plate 42 is covered with anti-slip rubber pads to improve the comfort of patients when touching it.

[0034] The compression spring 47 is built into the spring support 46. The limiting slider 49 is connected to one end of the compression spring 47. The buckle button 48 is located on the upper outer side of the first support arm 431 and is linked with the limiting slider 49. When the buckle button 48 is locked, the limiting slider 49 is engaged in the limiting slot of the spring support 46 under the elastic force of the compression spring 47, restricting the rotation of the support arm body 43 and keeping the five support arm bodies 43 in a vertical position. Together with the hand plate 42, they form a closed fall protection railing to prevent patients from accidentally falling out of bed. When it is necessary to open the railing, the buckle button 48 is pressed, which drives the limiting slider 49 to compress the compression spring 47 and disengage from the limiting slot, releasing the rotation restriction on the support arm body 43. At this time, the support arm body 43 can be horizontally rotated around the hinge axis of the lower rotating support 45 and laid flat. The hand plate 42 is laid flat synchronously with the support arm body 43, without affecting the patient's getting in and out of bed.

[0035] In a preferred embodiment, the back plate 13 includes a plate body 131, a controller module 133, and a pressure sensor 137. A pressure plate 132 is slidably connected to the inner wall of the plate body 131. A pressure rod 134 is installed at the bottom of the pressure plate 132. A pressure ring 135 is installed on the outer wall of the pressure rod 134. A tension spring 136 is provided at the bottom of the pressure ring 135. The end of the tension spring 136 away from the pressure ring 135 overlaps with the inner wall of the plate body 131. A lock is installed at the bottom of the pressure plate 132. Block 138 has a locking groove 139 on its outer wall. The inner wall of plate 131 is rotatably connected to a threaded rod 1310. A limit rod 1311 is installed on the inner wall of plate 131. A sliding frame 1312 is slidably connected to the inner wall of plate 131. A pin 1314 and a threaded rod nut 1313 are respectively installed on both sides of the sliding frame 1312. The limit rod 1311 passes through the sliding frame 1312. The diameter of the pin 1314 is adapted to the inner wall of the locking groove 139.

[0036] In the above structure, when the patient rests, lying flat on the backrest 13, thigh board 14, and calf board 15, the patient's weight will press the pressure plate 132 downwards. The pressure plate 132 will then drive the pressure rod 134, pressure ring 135, and locking block 138 downwards, compressing the tension spring 136. Simultaneously, the bottom of the pressure rod 134 connects to the contact end of the pressure sensor 137, causing the pressure sensor 137 to be activated by the pressure of the pressure rod 134. The controller module 133, installed at the bottom of the plate 131, receives the activation status of the pressure sensor 137. When the patient gets up alone at night, their back moves away from the pressure plate 132, eliminating the weight above it. The rebound of the tension spring 136 pushes the pressure ring 135, causing it to move the pressure rod 134 and pressure plate 132 upwards, separating the pressure rod 134 from the pressure sensor 137. At this time, the controller module 133 can no longer receive the signal. Upon receiving the excitation signal from the pressure sensor 137, the controller module 133 sends information to the terminal via its built-in internet module. The terminal then alerts medical staff or caregivers to prevent patients from getting up alone at night and causing harm. Simultaneously, pressing down on the pressure plate 132 causes it to move the locking block 138 and locking groove 139 downwards, bringing the locking groove 139 to the outside of the pin 1314. Rotating the threaded screw 1310 causes it to move through its threaded connection with the screw nut 1313, which in turn moves the sliding frame 1312 and the pin 1314. This causes the pin 1314 to move inwards into the locking groove 139, fixing the locking block 138 and thus fixing the pressure plate 132. At this point, the pressure plate 132 is at its lowest point, ensuring that the pressure rod 134 and the pressure sensor 137 are always in contact, thus keeping the pressure sensor 137 in an activated state.

[0037] Working principle: When the device is in use and the patient's posture needs to be adjusted, the first push rod motor 211 and the second push rod motor 212 extend synchronously, pushing the back plate 13 to rotate upward around the hinge point with the thigh plate 14. The back plate 13 drives the first parallelogram rod 2131 to move synchronously, pulling the second parallelogram rod 2132 to drive the lower leg plate 15 to rotate downward around the hinge point with the thigh plate 14, realizing the change of the nursing bed from a supine to a sitting position. The back plate 13 can rotate to 80 to 90 degrees, and the lower leg plate 15 can rotate to 80 to 90 degrees simultaneously, meeting the patient's comfortable sitting needs. When the patient is resting, the back plate 13 can rotate to a sitting position. When the patient lies flat on the backrest 13, thigh board 14, and calf board 15, the patient's weight will press the pressure plate 132 downwards. This pressure plate 132 then moves the pressure rod 134, pressure ring 135, and locking block 138 downwards, compressing the tension spring 136. Simultaneously, the bottom of the pressure rod 134 connects to the contact end of the pressure sensor 137, causing the pressure sensor 137 to be activated by the pressure of the pressure rod 134. The controller module 133 receives the activation status of the pressure sensor 137. Furthermore, when the patient gets up alone at night, the patient's back moves away from the pressure plate 132, causing the pressure plate 132 to... The weight of the object disappears, and the rebound of the tension spring 136 pushes the pressure ring 135, causing the pressure ring 135 to move the pressure rod 134 and the pressure plate 132 upwards. This causes the pressure rod 134 to separate from the pressure sensor 137. At this time, the controller module 133 can no longer receive the excitation signal from the pressure sensor 137. Therefore, the controller module 133 sends information to the terminal through the built-in Internet module, and then reminds medical staff or caregivers through the terminal to prevent patients from getting up alone at night and causing harm. At the same time, pressing down on the pressure plate 132 causes the pressure plate 132 to move the locking block 138 and the locking groove 139 downwards. This causes the locking groove 139 to reach the outside of the pin 1314. By rotating the threaded screw 1310, the threaded screw 1310 moves the screw nut 1313 through the threaded connection with the screw nut 1313. The screw nut 1313 then moves the sliding frame 1312 and the pin 1314, causing the pin 1314 to move into the locking groove 139 and fix the locking groove 139. This, in turn, fixes the pressure plate 132. At this time, the pressure plate 132 is at its lowest point, so that the pressure rod 134 and the pressure sensor 137 are always in contact, thus keeping the pressure sensor 137 in an activated state.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended technical solutions and their equivalents.

Claims

1. An intelligent nursing bed capable of enabling position changes and flexible turning over, characterized in that: It includes a bed body (1), a body position changing mechanism (2) set on the bed body (1), a flexible turning mechanism (3) symmetrically set at both ends of the bed body (1), an arm guardrail mechanism (4) set on both sides of the bed body (1), a bed base mechanism (5), and a support frame (6) connecting the bed body (1) and the bed base mechanism (5).

2. The intelligent nursing bed according to claim 1, which enables position changing and flexible turning, is characterized in that, The main body of the bed (1) is a five-piece frameless structure, including a headboard (11), a footboard (12), a backrest (13), a thigh board (14), and a calf board (15); the thigh board (14) is a fixed board, and the backrest (13) and the thigh board (14) and the backrest (13) and the calf board (15) are connected by hinges; the headboard (11) and the footboard (12) are vertically connected to the two ends of the backrest (13) and the calf board (15).

3. The intelligent nursing bed according to claim 1, which enables position changing and flexible turning, is characterized in that, The bed base mechanism (5) includes two symmetrically distributed base steel pipes (51), a first support steel pipe (52), a second support steel pipe (53), a support shaft (54), a wheel protection sleeve (55), and four universal wheels (56) with braking function; the first support steel pipe (52) and the second support steel pipe (53) are fixedly arranged between the two base steel pipes (51).

4. The intelligent nursing bed according to claim 1, which enables position changing and flexible turning, is characterized in that, The support frame (6) includes two symmetrical support square tubes (61), an H-shaped support plate (62), a connecting square tube (63), and a support connecting tube (64); the connecting square tube (63) is installed between the two symmetrical support square tubes (61), and the support connecting tube (64) is fixed between the two symmetrical support square tubes (61) and the H-shaped support plate (62).

5. The intelligent nursing bed according to claim 1, which enables position changing and flexible turning, is characterized in that, The posture changing mechanism (2) includes a sitting posture changing component (21) and a standing posture changing component (22). The sitting posture changing component (21) is composed of a first push rod motor (211), a second push rod motor (212) and a parallelogram linkage mechanism (213). The first push rod motor (211) and the second push rod motor (212) have the same structure and are symmetrically arranged. The push rod cylinder end is hinged to the H-shaped support plate (62), and the output end is hinged to the middle of the back plate (13). The parallelogram linkage mechanism (213) includes a first parallelogram rod (2131) and a second parallelogram rod (2132). One end of the first parallelogram rod (2131) is hinged to the lower end of the back plate (13), and the other end is hinged to the second parallelogram rod (2132). The other end of the second parallelogram rod (2132) is hinged to the middle of the calf plate (15).

6. The intelligent nursing bed according to claim 5, which enables position changing and flexible turning, is characterized in that, The standing posture transformation component (22) consists of a third push rod motor (221), an L-shaped hinge plate (222), a reinforcing connecting rod (223), and a U-shaped connecting plate (224). The long end of the L-shaped hinge plate (222) is symmetrically welded to both sides of the thigh plate (14), and the short end of the L-shaped hinge plate (222) is symmetrically hinged to the base steel pipe (51). The reinforcing connecting rod (223) connects the two L-shaped hinge plates (222). The upper end of the U-shaped connecting plate (224) is fixedly set in the middle of the reinforcing connecting rod (223). The output end of the third push rod motor (221) is hinged to the lower end of the U-shaped connecting plate (224), and the cylinder end is hinged to the second supporting steel pipe (53).

7. The intelligent nursing bed according to claim 1, which enables positional changes and flexible turning over, is characterized in that, The flexible turning mechanism (3) consists of four sets, one set on each side of the headboard (11) and the footboard (12). Each set includes a lever lifting assembly (31) and a rotary drive assembly (32). The lever lifting assembly (31) is composed of a small electric push rod (311), a lever body (312), a sliding block (313), and a slider guide rail (314). The slider guide rail (314) is vertically fixed on both sides of the headboard (11) or the footboard (12). The sliding block (313) slides with the slider guide rail (314). The lever body (312) is hinged in the middle to the fixing plate of the headboard (11) or the footboard (12), with one end hinged to the small electric push rod (311) and the other end hinged to the sliding block (313).

8. The intelligent nursing bed according to claim 7, which enables position changing and flexible turning, is characterized in that, The rotation drive assembly (32) includes a brushless rotary motor (321), a three-section turning and rotating rod (322), and a U-shaped fixing plate (323). The rotary motor is fixed to the sliding block (313) via the U-shaped fixing plate (323), and its output end is connected to the three-section turning and rotating rod (322). The three-section turning and rotating rod (322) is designed in sections corresponding to the back plate (13), thigh plate (14), and calf plate (15), and each section is flexibly connected.

9. The intelligent nursing bed according to claim 1, which enables position changing and flexible turning, is characterized in that, The arm plate guardrail mechanism (4) includes an arm plate bottom support (41), a hand plate (42), a support arm body (43), an upper rotating support (44), a lower rotating support (45), a spring support (46), a compression spring (47), a buckle button (48), and a limiting slider (49). The lower end of the arm plate bottom support (41) is fixedly mounted on the support square tube (61). There are five support arm bodies (43) on each side, namely the first to fifth support arm bodies (43). The second to fifth support arm bodies (43) have the same structure and connection method. The following description only uses the first support arm (431) and the second support arm (432) as examples. The bottom end of the rotating support (45) is fixedly set on the bottom support (41) of the arm plate. The bottom ends of the first to fifth support arm bodies (43) are hinged to the lower rotating support (45). The upper end of the first support arm (431) is hinged to the spring support (46). The upper end of the second support arm (432) is hinged to the upper rotating support (44). The spring support (46) and the upper rotating support (44) are fixedly connected to the hand plate (42). The buckle button (48) is set on the upper end of the first support arm (431). When the buckle button (48) is locked, the support arm body (43) remains vertical to form a guardrail. When unlocked, the support arm body (43) can rotate horizontally around the axis of rotation.

10. The intelligent nursing bed according to claim 2, which enables positional changes and flexible turning over, is characterized in that: The back plate (13) includes a plate body (131), a controller module (133), and a pressure sensor (137). A pressure plate (132) is slidably connected to the inner wall of the plate body (131). A pressure rod (134) is installed at the bottom of the pressure plate (132). A pressure ring (135) is installed on the outer wall of the pressure rod (134). A tension spring (136) is provided at the bottom of the pressure ring (135). The end of the tension spring (136) away from the pressure ring (135) overlaps with the inner wall of the plate body (131). A locking block (138) is installed at the bottom of the pressure plate (132). The outer wall of the locking block (138) is provided with a locking groove (139). The inner wall of the plate (131) is rotatably connected with a threaded screw (1310). The inner wall of the plate (131) is installed with a limit rod (1311). The inner wall of the plate (131) is slidably connected with a sliding frame (1312). The two sides of the sliding frame (1312) are respectively equipped with a pin (1314) and a screw nut (1313). The limit rod (1311) passes through the sliding frame (1312). The diameter of the pin (1314) is adapted to the inner wall of the locking groove (139).

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