Sickbed for intelligently and electrically adjusting angle of backrest

Abstract

The invention discloses a sickbed for intelligently and electrically adjusting the angle of a backrest, and relates to the technical field of medical instruments.The sickbed comprises bed legs, a fixed supporting plate and a swing supporting plate, the position of the hip of a patient is detected through a pressure sensor in a mattress, and the position of the hinge point of a first movable plate and a second movable plate is accurately adjusted in combination with feedback of a laser range finder; it is ensured that the hip of a patient is used as a supporting point in the lifting or angle adjusting process, discomfort or injury caused by improper supporting points is avoided, meanwhile, personalized supporting adjustment can be conducted according to the height and the body shape of the patient through the design of the rubber columns, the comfort of the patient is further improved, and the patient can conveniently and rapidly lift the patient according to the feeling without assistance of other people. The angle of the bed board is autonomously controlled and adjusted, the optimal supporting body position is achieved, clinical treatment is assisted and perfected, the patient transfer risk can be reduced clinically, and secondary injury caused by misoperation is reduced; long-term bedridden complications are reduced; the insufficient adjustment precision is improved; and the operation convenience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a hospital bed for intelligently and electrically adjusting a backrest angle. Background Art

[0002] With the aging population and the growing demand for postoperative rehabilitation, hospital beds, as core medical care equipment, face a significant impact on patient recovery and care efficiency, driven by their functionality and intelligence. Traditional hospital beds often utilize manual mechanical mechanisms to adjust the backrest angle, which can be challenging due to low precision and laborious operation. Frequent angle adjustments can increase the workload of caregivers, especially for patients with limited mobility or those suffering from critical illnesses, and can make precise position management difficult.

[0003] Existing technical problems: Medical staff need to manually assist patients in adjusting their body position or transferring, which can easily lead to secondary injuries due to improper operation; Complications of long-term bed rest: The backrest angle of ordinary beds is fixed or the adjustment range is limited. Patients who remain in a single posture for a long time are prone to problems such as pressure sores and lung infections; Manual or traditional electric adjustment devices rely on manual observation angles and lack real-time feedback, which can easily lead to body position deviations and affect the effectiveness of rehabilitation training. Traditional electric bed control systems are complex, and medical staff need to frequently operate buttons or handles, which is inefficient. Summary of the Invention

[0004] The purpose of the present invention is to provide a hospital bed for intelligent electric adjustment of the backrest angle to solve the following technical problems: manual assistance to patients to adjust their body position or transfer can easily lead to secondary injuries due to improper operation; complications of long-term bed rest: the backrest angle of ordinary beds is fixed or the adjustment range is limited, and patients who remain in a single posture for a long time are prone to problems such as pressure sores and lung infections; manual or traditional electric adjustment devices rely on manual observation angles and lack real-time feedback, which can easily lead to body position deviations and affect the effectiveness of rehabilitation training.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A hospital bed for intelligently electrically adjusting the backrest angle, comprising: bed legs, a fixed support plate and a swing support plate, two bedside support beams arranged in parallel, and door-shaped bed legs welded to the bottom sides of both ends of the two bedside support beams;

[0007] A fixed support plate is welded to the top side of one end of the bedside support beam, and a swing support plate is carried on the top side of the other end of the bedside support beam;

[0008] The fixed support plate and the swing support plate are respectively provided with sliding grooves in the opposite surfaces thereof, a first movable plate is slidably arranged in the sliding groove of the fixed support plate, a second movable plate is slidably arranged in the sliding groove of the swing support plate, the second movable plate is hingedly connected to the first movable plate, and the first movable plate and the second movable plate are hingedly connected, the first support plate is located in the fixed support plate and can only slide laterally along the sliding groove of the fixed support, after the first support plate slides, the hinged position of the first support plate and the second support plate is a swing node of the fixed support plate and the swing support plate, and the first support plate and the second support plate are swing media of the fixed support plate and the swing support plate;

[0009] The upper and lower sides of the second movable plate are provided with clearances to the upper and lower groove walls of the swing support plate, and the upper and lower sides of the first movable plate are provided with clearances to the upper and lower groove walls of the fixed support plate;

[0010] A first supporting bed board is fixed to the top side of the swing support board, and a second supporting bed board is fixed to the top side of the fixed support board. A rubber column is connected between the opposite surfaces of the first supporting bed board and the second supporting bed board. The rubber column is made of soft material. Since the support position needs to be better adjusted according to the different heights of patients, generally when the patient lifts the upper body, the bending point of the human body is also at the patient's buttocks. With the buttocks as the support point, the angle between the upper body and the lower body is adjusted;

[0011] When the first movable plate and the second movable plate are movable, the hinge point slides and adjusts within the straight area of ​​the rubber column. Since the hinge position is the bending node of the fixed support plate and the swing support plate, the bending node position between the fixed support plate and the swing support plate can be appropriately adjusted according to the patient's body length ratio. When adjusting the angle of the patient's upper body, the patient's comfort is ensured while avoiding injury to the patient during the angle adjustment of the upper body.

[0012] The two outer side surfaces of the swing support plate are respectively rotatably connected to the swing connecting rod through a pin shaft, and the bottom end of the swing connecting rod is rotatably connected to the outer side of one end of the bedside support beam.

[0013] The cam is fixedly mounted on the support frame, and the cam is fixedly mounted on the support frame, wherein the cam is fixedly mounted on the support frame, and the cam is fixedly mounted on the support frame.

[0014] A second sliding hole is provided on the bottom side of the swing support plate, and a second limiting column is slidingly arranged in the second sliding hole. The second limiting column is fixed to the bottom side of the second movable plate, and a limiting cap is provided on the bottom of the second limiting column. The diameter of the limiting cap is larger than the width of the second sliding hole. When the second movable plate slides, the limiting cap can slide in a straight line in the second sliding hole through the second limiting column to ensure that the second movable plate does not shift sideways during the adjustment process.

[0015] As a further solution of the present invention, a first sliding hole is formed on the bottom side of the fixed support plate, a first limiting post is slidably provided in the first sliding hole, the first limiting post is fixed to the bottom side of the first movable plate, a limiting cap is provided on the bottom of the first limiting post, the diameter of the limiting cap is larger than the width of the first sliding hole, and when the first movable plate slides, the limiting cap can slide along a straight line in the first sliding hole through the first limiting post, thereby ensuring that the first movable plate does not shift laterally during the adjustment process;

[0016] A mounting seat is fixed on the bottom side of the first movable plate near the hinged position with the second movable plate. A matching roller is rotatably mounted in the mounting seat. The matching roller rolls on the top side of the middle portion of the bedside support beam.

[0017] As a further solution of the present invention: a push-up structure is installed on the bottom side of the bedside support beam, and the push-up structure includes a swinging member, a second connecting rod is rotatably installed in the swinging member, and two swinging frames are fixed in parallel on the second connecting rod. The top of the swinging frame is rotatably equipped with a push-up roller, and the push-up roller is located on the bottom side of the swing support plate;

[0018] The pushing structure also includes a mounting frame, a connecting support plate is fixed between the two bedside support beams, a pushing motor is fixed to the bottom side of the connecting support plate, and the pushing motor is composed of two connecting ears, which are respectively fixed at the two ends of the bottom side of the connecting support plate, and a positioning rod is fixed between the two connecting ears, wherein the middle part of the two connecting ears is rotatably equipped with a pushing screw, and the pushing motor is installed on one of the connecting ears of the mounting frame, and the output shaft of the pushing motor is connected to one end of the pushing screw.

[0019] As a further solution of the present invention: a push plate is provided between the two connecting ears of the push-up motor, and a positioning hole and a screw hole are respectively provided inside the push plate corresponding to the positioning rod and the push-up screw rod, the positioning rod passes through the positioning hole, and the push-up screw rod is rotatably assembled in the screw hole of the push plate;

[0020] A swing seat is fixed on the bottom side of the push plate, a swing connecting rod is rotatably installed in the swing seat, and a swing sleeve is fixed on the other end of the swing connecting rod;

[0021] A first connecting rod is fixed between the bottoms of the two swing frames, and a swing sleeve at the bottom of the swing connecting rod is sleeved on the outside of the first connecting rod.

[0022] As a further solution of the present invention: a detection structure is provided on one side of the swing support plate, and the detection structure includes a limit plate, a first sliding hole is provided in the limit plate, and a movable rod is slidably provided in the first sliding hole, and a measuring plate is fixed to one end of the movable rod, and a mounting plate is fixed to one side of the swing support plate, and a laser rangefinder is installed on one side of the mounting plate, and the detection direction of the laser rangefinder is set toward the measuring plate, and a connecting seat is fixed on one side of the fixed support plate, and the other end of the movable rod is installed inside the connecting seat, and the connecting seat is fixed to the side of the hinge position of the first movable plate and the second movable plate. After the patient's hip position is determined by detecting the movement, the movement can be pushed. During the movement of the , with the cooperation of , it can drive the sliding of the , thereby driving the displacement of . During the displacement, the distance between and is detected by one side, and the detected distance is fed back to , and the feedback information of the ranging is used to control the sliding position of the adjustment to ensure that the hinge point of and is located above the patient's hip, so as to ensure the comfort of the patient during the patient lifting process.

[0023] As a further solution of the present invention: a mattress is laid on the top side of the first supporting bed board, the rubber column and the second supporting bed board. The mattress has a double-layer structure. A plurality of pressure sensors are arranged in a matrix at the middle splicing position of the mattress. A plurality of pressure sensors are arranged inside the mattress. When a patient lies on the mattress, the position of the patient's buttocks can be analyzed through the force points of the pressure sensors. Since the buttocks are the place where the contact points with the mattress are relatively dense when the human body is lying flat, the position of the buttocks can be determined according to the position of the force points, so that the position of the hinge points can be adjusted through coordinated operations.

[0024] As a further solution of the present invention: an L-shaped headboard support beam is fixed to one end of the bedside support beam, a pressing structure is installed at the end edge of the first supporting bed board, and the pressing structure includes a movable insertion rod. Three limiting holes are opened at the end edge of the first supporting bed board, wherein movable insertion rods are slidably inserted into the limiting holes on both sides, and a middle insertion rod is inserted into the middle limiting hole, and the top ends of the movable insertion rod and the middle insertion rod are fixed with the same pressing plate, and the pressing plate is located on the top side of one end of the mattress.

[0025] As a further solution of the present invention: a spring fixing ring is fixed to the bottom end of the middle insertion rod, and a spring is fixed to the top of the spring fixing ring, and the spring is sleeved on the outside of the middle insertion rod, and the top end of the spring is fixed to the bottom side of the pressing plate, and a fixing plate is fixed to the middle inner side of the swing support plate, and the bottom end of the middle insertion rod is located at the top side of the fixing plate. Since the swing support plate serves as a swing structure, it is used in conjunction with the upper part to slide downward due to the swinging of , in order to avoid sliding during the angle adjustment process, during the lifting process, the bottom end is separated from the inner side, and under the pre-tightening force of , it can be pushed away in the direction and driven closer to achieve clamping and fixation of the end, and the position can be limited to avoid sliding downward along the surface, thereby ensuring that the patient is more comfortable during the sitting process.

[0026] As a further solution of the present invention: a fixed controller is installed on the side of the headboard support beam, and the fixed controller is connected to the pressure sensor bus in the mattress by plugging. The fixed controller branches out a handheld controller, and the fixed controller is used to receive detection data from the laser rangefinder. At the same time, the fixed controller is used to control the process of the lifting motor and the pushing motor. The fixed controller is provided with an analysis module and a control module. The analysis module is used to analyze the force points of the pressure sensor in the mattress. The force point analysis function of the pressure sensor in the mattress can automatically adjust the bed state according to the specific situation of the patient. The combination of the handheld controller and the fixed controller allows medical staff to quickly adjust the bed state without complicated operating procedures, thereby improving nursing efficiency.

[0027] Beneficial effects of the present invention:

[0028] The position of the patient's buttocks is detected by the pressure sensor in the mattress, and the hinge point position of the first movable plate and the second movable plate is accurately adjusted in combination with the feedback from the laser rangefinder to ensure that the patient uses the buttocks as the support point during lifting or angle adjustment, avoiding discomfort or injury caused by improper support points. At the same time, the design of the rubber column can be personalized according to the patient's height and body shape to further improve the patient's comfort. The patient can independently control and adjust the angle of the bed board according to his or her own feelings without the help of others to achieve the best support position, assist in improving clinical treatment, reduce the risk of patient transfer in clinical practice, reduce secondary injuries caused by improper operation, reduce complications of long-term bed rest, improve insufficient adjustment accuracy, and increase operational convenience.

[0029] The lifting structure achieves precise adjustment of the swing support plate angle through the coordinated work of the lifting motor and the pushing motor, combined with real-time feedback from the laser rangefinder. The patient's upper body can be raised or laid flat as needed to meet different nursing needs. At the same time, the control system can quickly respond to detection data and adjust the bed angle and position in real time to ensure that the patient is always in a comfortable support state.

[0030] The height of the bed and the angle of the swing support plate can be adjusted according to the patient's height and care needs to provide more comfortable support. In addition, the force point analysis function of the pressure sensor in the mattress can automatically adjust the bed state according to the patient's specific situation. The combination of handheld controller and fixed controller allows medical staff to quickly adjust the bed state without complicated operating procedures, thereby improving care efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below with reference to the accompanying drawings.

[0032] Figure 1 It is a schematic diagram of the overall first three-dimensional structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the cutaway three-dimensional structure of the mattress of the present invention;

[0034] Figure 3 It is a schematic diagram of the push-up structure of the present invention;

[0035] Figure 4 It is a schematic diagram of the sliding structure of the fixed support plate and the swing support plate of the present invention;

[0036] Figure 5 It is a schematic diagram of the pushing structure of the first movable plate of the present invention;

[0037] Figure 6 It is a schematic diagram of the pressing structure of the present invention;

[0038] Figure 7 In the present invention Figure 3 Structure diagram of the middle A area;

[0039] In the figure: 1. Bed legs, 2. Bedside support beams, 3. Detection structure, 4. Push-up structure, 5. Footrest guard, 7. Mattress, 8. Pressing structure, 9. Headrest guard, 10. Handheld controller, 11. Headrest support beam, 12. Fixed controller, 13. Connecting support plate, 14. Fixed support plate, 15. Swing support plate, 16. Swing connecting rod, 17. First support bed board, 18. Rubber column, 19. Second support bed board, 20. First movable board, 21. Second movable board, 22. First sliding hole, 23. First limiting column, 24. Second sliding hole, 25. Second limiting column, 26. Mounting seat, 27. Matching roller, 28. Push Screw rod, 29, pushing motor, 301, connecting seat, 302, movable rod, 303, limit plate, 304, measuring plate, 305, laser rangefinder, 306, mounting plate, 401, pushing motor, 402, mounting frame, 403, positioning rod, 404, pushing screw rod, 405, pushing plate, 406, swing seat, 407, swing connecting rod, 408, swing sleeve, 409, first connecting rod, 410, swing frame, 411, swing member, 412, second connecting rod, 413, pushing roller, 81, movable plug rod, 82, pressing plate, 83, middle plug rod, 84, spring, 85, spring fixing ring, 86, fixing plate. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0041] See also Figure 1 、 Figure 4 、 Figure 5 As shown, the present invention is a hospital bed for intelligent electric adjustment of the backrest angle, comprising: bedside support beams 2 arranged in parallel, and door-shaped bed legs 1 welded to the bottom sides of both ends of the two bedside support beams 2;

[0042] A fixed support plate 14 is welded to the top side of one end of the bedside support beam 2, and a swing support plate 15 is carried on the top side of the other end of the bedside support beam 2; the fixed support plate 14 serves as the main support of the bed, and the swing support plate 15 can be flipped and lifted, and the angle between the swing support plate 15 and the fixed support plate 14 can be adjusted to provide different lying support positions for the patient during the swinging process of the swing support plate 15;

[0043] The fixed support plate 14 and the swing support plate 15 are respectively provided with sliding grooves in the opposite surfaces, and a first movable plate 20 is slidingly arranged in the sliding groove of the fixed support plate 14, and a second movable plate 21 is slidingly arranged in the sliding groove of the swing support plate 15, and the second movable plate 21 is hingedly connected to the first movable plate 20; the first movable plate 20 and the second movable plate 21 are hingedly connected, and the first movable plate 20 is located in the fixed support plate 14 and can only slide laterally along the sliding groove of the fixed support plate 14. After the first movable plate 20 slides, the hinged position of the first movable plate 20 and the second movable plate 21 is the swing node of the fixed support plate 14 and the swing support plate 15, and the first movable plate 20 and the second movable plate 21 are the swing media of the fixed support plate 14 and the swing support plate 15.

[0044] The upper and lower sides of the second movable plate 21 are matched with the gaps between the upper and lower sides of the groove of the swing support plate 15, and the upper and lower sides of the first movable plate 20 are matched with the gaps between the upper and lower sides of the groove of the fixed support plate 14, which can ensure the stable sliding of the first movable plate 20 on the fixed support plate 14, ensure the synchronization of the first movable plate 20 and the fixed support plate 14, and ensure the synchronization of the second movable plate 21 and the swing support plate 15, avoiding the swing support plate 15 from having a movable margin, and ensuring the stability of the structure when the patient leans on it;

[0045] A first support bed plate 17 is fixed to the top side of the swing support plate 15, and a second support bed plate 19 is fixed to the top side of the fixed support plate 14. A rubber column 18 is connected between the opposite surfaces of the first support bed plate 17 and the second support bed plate 19. The rubber column 18 is made of soft material, and the support position can be better adjusted according to the different heights of patients. Generally, when the patient's upper body is lifted, the bending point of the body is also at the patient's buttocks. With the buttocks as the support point, the angle between the upper and lower body is adjusted.

[0046] When the first movable plate 20 and the second movable plate 21 are movable, and the hinge point is slidably adjusted within the straight area of ​​the rubber column 18, since the hinge position is the bending node of the fixed support plate 14 and the swing support plate 15, the bending node position between the fixed support plate 14 and the swing support plate 15 can be appropriately adjusted according to the patient's body length ratio. When adjusting the angle of the patient's upper body, the patient's comfort is ensured while avoiding injury to the patient's upper body during the angle adjustment;

[0047] The two outer side surfaces of the swing support plate 15 are respectively connected to the swing connecting rod 16 through a pin shaft, and the bottom end of the swing connecting rod 16 is rotatably connected to the outer side of one end of the bedside support beam 2; the swing connecting rod 16 serves as a limiting support structure for the swing support plate 15. Since the swing node of the swing support plate 15 is determined by the hinge point of the first movable plate 20 and the second movable plate 21, it is necessary to support the swing support plate 15 through the swing connecting rod 16 when the swing support plate 15 swings, so as to avoid sliding and disengagement of the swing support plate 15 and ensure the stability of the support.

[0048] See also Figure 5 As shown, the fixed support plate 14 is provided with a mounting groove inside, a push motor 29 is installed in the mounting groove, an assembly hole is provided between the mounting groove and the slide groove of the fixed support plate 14, a screw hole is provided inside the first movable plate 20, the output end of the push motor 29 is connected and installed with a push screw 28, the push screw 28 passes through the assembly hole, and the end of the push screw 28 is rotatably assembled in the screw hole inside the first movable plate 20; since the hinge point of the first movable plate 20 and the second movable plate 21 is the bending point of the swing support plate 15 and the fixed support plate 14, at the bending joint When the point changes, the pushing motor 29 can drive the rotation of the pushing screw 28. With the cooperation of the pushing screw 28, the position of the first movable plate 20 can be changed. When the first movable plate 20 moves, the hinge point of the first movable plate 20 and the second movable plate 21 changes. Adjusting the hinge point to the upper part of the patient's buttocks can ensure that the patient will not slide relative to the patient when the upper body is lifted, and at the same time avoid injury to the patient due to the turning node not being in the appropriate position above the patient's buttocks, making the adjustment process safer and more stable.

[0049] See also Figure 4 As shown, a second sliding hole 24 is opened on the bottom side of the swing support plate 15, and a second limiting column 25 is slidably arranged in the second sliding hole 24. The second limiting column 25 is fixed on the bottom side of the second movable plate 21, and a limiting cap is provided at the bottom of the second limiting column 25. The diameter of the limiting cap is greater than the width of the second sliding hole 24. When the second movable plate 21 slides, the second limiting column 25 can slide in a straight line in the second sliding hole 24 to ensure that the second movable plate 21 does not shift sideways during the adjustment process.

[0050] See also Figure 4As shown, a first sliding hole 22 is formed on the bottom side of the fixed support plate 14, and a first limiting column 23 is slidably provided in the first sliding hole 22. The first limiting column 23 is fixed to the bottom side of the first movable plate 20, and a limiting cap is provided at the bottom of the first limiting column 23. The limiting cap has a diameter greater than the width of the first sliding hole 22. When the first movable plate 20 slides, the limiting cap can slide in a straight line in the first sliding hole 22 through the first limiting column 23, thereby ensuring that the first movable plate 20 does not shift sideways during the adjustment process.

[0051] A mounting seat 26 is fixed to the bottom side of the first movable plate 20 near the hinged position with the second movable plate 21. A matching roller 27 is rotatably mounted in the mounting seat 26. The matching roller 27 rolls on the top side of the middle portion of the bedside support beam 2.

[0052] Since the hinge point of the first movable plate 20 and the second movable plate 21 is in a suspended state and does not have a stable support effect, the node will drop during the bending process, affecting comfort. By arranging a matching roller 27 at the hinge position, the hinge position can be supported during the movement of the first movable plate 20 and the second movable plate 21, ensuring the bending process and the overall structure being stable.

[0053] When in use, since the hinge point of the first movable plate 20 and the second movable plate 21 is the bending point of the swing support plate 15 and the fixed support plate 14, when the bending node changes, the pushing motor 29 is operated to drive the rotation of the pushing screw 28. Under the cooperation of the pushing screw 28, the position of the first movable plate 20 can be changed. When the first movable plate 20 moves, the hinge point of the first movable plate 20 and the second movable plate 21 is changed, and the hinge point is adjusted to a position slightly above the patient's buttocks;

[0054] When the first movable plate 20 slides, the first limiting column 23 slides along a straight line in the first sliding hole 22 to ensure that the first movable plate 20 does not move sideways during the adjustment process;

[0055] When the second movable plate 21 slides, the second limiting column 25 slides along a straight line in the second sliding hole 24 to ensure that the second movable plate 21 does not move sideways during the adjustment process;

[0056] When the first movable plate 20 and the second movable plate 21 are movable, and the hinge point is slidably adjusted within the straight line area of ​​the rubber column 18, since the hinge position is the bending node of the fixed support plate 14 and the swing support plate 15, the bending node position between the fixed support plate 14 and the swing support plate 15 can be appropriately adjusted according to the patient's body length ratio. When adjusting the angle of the patient's upper body, the patient's comfort is ensured while avoiding injury when adjusting the angle of the patient's upper body. It ensures that the patient will not slide relative to the patient when lifting the patient's upper body, and avoids injury to the patient due to the turning node not being at a suitable position above the patient's buttocks. The adjustment process is safer and more stable.

[0057] See also Figure 2 、 Figure 3 As shown, a lifting structure 4 is installed on the bottom side of the bedside support beam 2, and the lifting structure 4 includes a swinging member 411. A second connecting rod 412 is rotatably installed in the swinging member 411. Two swinging frames 410 are fixed in parallel on the second connecting rod 412. The top of the swinging frame 410 is rotatably equipped with a lifting roller 413. The lifting roller 413 is located on the bottom side of the swing support plate 15;

[0058] The pushing structure 4 also includes a mounting frame 402, a connecting support plate 13 is fixed between the two bedside support beams 2, a pushing motor 401 is fixed to the bottom side of the connecting support plate 13, and the pushing motor 401 is composed of two connecting ears, which are respectively fixed to the two ends of the bottom side of the connecting support plate 13, and a positioning rod 403 is fixed between the two connecting ears, wherein the middle part of the two connecting ears is rotatably equipped with a pushing screw 404, and the pushing motor 401 is installed on one of the connecting ears of the mounting frame 402, and the output shaft of the pushing motor 401 is connected to one end of the pushing screw 404;

[0059] The lifting motor 401 can drive the lifting screw rod 404 to rotate, and can realize the sliding of the pushing plate 405 along the positioning rod 403. During the sliding process of the pushing plate 405, the swing connecting rod 407 is driven to move, so that the swing sleeve 408 acts on the first connecting rod 409, and the swing frame 410 swings with the second connecting rod 412 as the center point. The second connecting rod 412 performs a circular motion with the axis of the second connecting rod 412. During the movement of the pushing plate 405, the swinging effect on the swing frame 410 can be achieved under the push and cooperation of the swing connecting rod 407. When the pushing plate 405 moves away from the lifting motor 401, the bottom end of the swing frame 410 swings downward, and the top end of the swing frame 410 swings upward. The lifting roller 413 on the top end of the swing frame 410, the rolling surface of the lifting roller 413 acts on the bottom side of the swing support plate 15, and can rotate with the upward swing of the top end of the swing frame 410. The swing support plate 15 is rotated around the hinge node of the first movable plate 20 and the second movable plate 21 as the center of the circle, so that the angle between the swing support plate 15 and the fixed support plate 14 is reduced, thereby lifting the patient's upper body;

[0060] In the process of pushing the plate 405 close to the lifting motor 401, the bottom end of the swing frame 410 swings upward and the top end of the swing frame 410 swings downward. As the top of the swing frame 410 swings downward, the swing support plate 15 can rotate with the hinge node of the first movable plate 20 and the second movable plate 21 as the center of the circle, so that the angle between the swing support plate 15 and the fixed support plate 14 is expanded, so that the patient can gradually adjust from a sitting position to a lying position.

[0061] A push plate 405 is provided between the two connecting ears of the push-up motor 401. Positioning holes and screw holes are provided inside the push plate 405, corresponding to the positioning rod 403 and the push-up screw rod 404, respectively. The positioning rod 403 passes through the positioning hole, and the push-up screw rod 404 is rotatably assembled in the screw hole of the push plate 405, which can ensure the stable movement of the push plate 405, so as to better cooperate with the adjustment of the swing angle of the swing support plate 15.

[0062] A swing seat 406 is fixed to the bottom side of the push plate 405, a swing link 407 is rotatably mounted in the swing seat 406, and a swing sleeve 408 is fixed to the other end of the swing link 407;

[0063] A first connecting rod 409 is fixed between the bottoms of the two swing frames 410, and the swing sleeve 408 at the bottom of the swing link 407 is sleeved on the outside of the first connecting rod 409; the swing sleeve 408 rotates relative to the first connecting rod 409 to ensure a stable connection between the swing sleeve 408 and the first connecting rod 409 when the swing frame 410 rotates.

[0064] See also Figure 2 、 Figure 7 As shown, a detection structure 3 is provided on one side of the swing support plate 15, and the detection structure 3 includes a limit plate 303, a first sliding hole is provided in the limit plate 303, and a movable rod 302 is slidably provided in the first sliding hole, and a measuring plate 304 is fixed to one end of the movable rod 302, and a mounting plate 306 is fixed to one side of the swing support plate 15, and a laser rangefinder 305 is installed on one side of the mounting plate 306, and the detection direction of the laser rangefinder 305 is set toward the measuring plate 304, and a connecting seat 301 is fixed on one side of the fixed support plate 14, and the other end of the movable rod 302 is installed inside the connecting seat 301, and the connecting seat 301 is fixed to the side of the hinge position of the first movable plate 20 and the second movable plate 21. In order to better adjust the rotation node position of the first movable plate 20 and the second movable plate 21, it is necessary to clarify or the position of the buttocks is located above the pressing structure 8;

[0065] After the patient's buttocks position is determined by detection, the first movable plate 20 can be pushed to move by the pushing motor 29. During the movement of the first movable plate 20, with the cooperation of the connecting seat 301, the movable rod 302 can be driven to slide in the limit plate 303, thereby driving the measuring plate 304 to move. During the displacement of the measuring plate 304, the laser rangefinder 305 on one side of the mounting plate 306 is used to detect the distance between the measuring plate 304 and the mounting plate 306, and the detected distance is fed back to the fixed controller 12. According to the feedback information of the distance measurement, the sliding position of the first movable plate 20 is adjusted by controlling the pushing motor 29 to ensure that the hinge point of the first movable plate 20 and the second movable plate 21 is located above the patient's buttocks, so as to ensure the patient's comfort during the patient lifting process.

[0066] See also Figure 1-2 As shown, a mattress 7 is laid on the top side of the first supporting bed board 17, the rubber column 18 and the second supporting bed board 19. The mattress 7 is a double-layer structure, and a plurality of pressure sensors are arranged in a matrix at the middle splicing position of the mattress 7; a plurality of pressure sensors are arranged in the mattress 7, and the patient's buttocks position can be analyzed through the force points of the pressure sensors when the patient lies on the mattress 7. Since the buttocks are the place where the contact points with the mattress 7 are relatively dense when the human body is lying flat, the buttocks position can be determined according to the position of the force points, so that the hinge point position of the first movable plate 20 and the second movable plate 21 can be adjusted through the cooperation of the detection structure 3.

[0067] See also Figure 6As shown, an L-shaped headboard support beam 11 is fixed to one end of the bedside support beam 2, and a pressing structure 8 is installed at the end edge of the first supporting bed board 17. The pressing structure 8 includes a movable insertion rod 81, and three limiting holes are opened at the end edge of the first supporting bed board 17, wherein the movable insertion rods 81 are slidably inserted into the limiting holes on both sides, and the middle insertion rod 83 is inserted into the middle limiting hole, and the top ends of the movable insertion rod 81 and the middle insertion rod 83 are fixed with the same pressing plate 82, and the pressing plate 82 is located on the top side of one end of the mattress 7.

[0068] A spring fixing ring 85 is fixed to the bottom end of the middle plug rod 83, and a spring 84 is fixed to the top of the spring fixing ring 85. The spring 84 is sleeved on the outside of the middle plug rod 83, and the top end of the spring 84 is fixed to the bottom side of the pressing plate 82. A fixing plate 86 is fixed to the middle part of the inner side of the swing support plate 15, and the bottom end of the middle plug rod 83 is located on the top side of the fixing plate 86;

[0069] When adjusting the sitting posture of the patient's upper body, since the swing support plate 15 serves as a swing structure, the mattress 7 is used in conjunction with the first supporting bed board 17. The swinging of the swing support plate 15 will cause the mattress 7 to slide downward. In order to prevent the mattress 7 from sliding during the angle adjustment of the swing support plate 15, the bottom end of the middle insertion rod 83 is separated from the fixing plate 86 on the inner side of the head support beam 11 during the lifting process of the first supporting bed board 17. Under the pre-tightening force of the spring 84, the spring fixing ring 85 can be pushed away from the first supporting bed board 17, and the pressing plate 82 can be driven to approach the first supporting bed board 17 to achieve clamping and fixing of the end of the mattress 7, which can limit the position of the mattress 7 and prevent the mattress 7 from sliding downward along the surface of the first supporting bed board 17, ensuring that the patient is more comfortable when sitting.

[0070] When the swing support plate 15 swings to the horizontal position, the bottom end of the middle insertion rod 83 squeezes the surface of the fixed plate 86, so that the spring 84 returns to the pre-tightened contraction state, and the pressing plate 82 does not directly act on the surface of the mattress 7, so that the mattress 7 or related bedding can be replaced.

[0071] See also Figure 1-7As shown, a fixed controller 12 is installed on the side of the headboard support beam 11. The fixed controller 12 is connected to the pressure sensor bus in the mattress 7 by plugging. The fixed controller 12 is connected to the handheld controller 10. The fixed controller 12 is used to receive the detection data of the laser rangefinder 305. At the same time, the fixed controller 12 is used to control the process of the lifting motor 401 and the pushing motor 29. The fixed controller 12 is provided with an analysis module and a control module. The analysis module is used to analyze the force points of the pressure sensor in the mattress 7. The force point analysis function of the pressure sensor in the mattress 7 can automatically adjust the bed state according to the specific situation of the patient. The combination of the handheld controller 10 and the fixed controller 12 allows medical staff to quickly adjust the bed state without complicated operation procedures, thereby improving nursing efficiency.

[0072] Working principle: The position of the patient's buttocks is detected by pressure sensors. There are multiple pressure sensors arranged inside the mattress 7, among which the pressure sensor model is MPX5700AP. These sensors can detect the pressure distribution of the patient lying on the mattress in real time. Since the human buttocks have a large contact area with the mattress and the pressure is more concentrated when lying flat, the specific position of the patient's buttocks can be accurately determined through the force point analysis of the pressure sensor. This information is crucial for subsequent bed adjustments because it provides a basis for adjusting the bending nodes of the bed board, ensuring that the patient's buttocks can be used as the support point when adjusting the angle, thereby improving the patient's comfort and safety.

[0073] The laser rangefinder 305 in the detection structure 3, a Fluke 424D model, is used to accurately detect the position of the movable plate. Specifically, the laser rangefinder 305 is oriented toward the measuring plate 304, which is connected to the first movable plate 20 via a movable rod 302. When the push motor 29 is activated, it drives the push screw 28 to rotate, thereby pushing the first movable plate 20 to slide along the sliding groove of the fixed support plate 14. During this process, the movement of the first movable plate 20 will drive the movable rod 302 to slide in the limit plate 303, thereby causing the measuring plate 304 to move. The laser rangefinder 305 detects the distance between the measuring plate 304 and the mounting plate 306 in real time, and feeds this distance data back to the fixed controller 12. The fixed controller 12 accurately adjusts the sliding position of the first movable plate 20 by controlling the operation of the pushing motor 29 based on the distance measurement data, ensuring that the hinge point of the first movable plate 20 and the second movable plate 21 can be accurately moved to the position above the patient's buttocks. This process realizes dynamic adjustment and precise control of the movable plate position, providing a basis for subsequent bed angle adjustment.

[0074] The lifting structure 4 is responsible for achieving the lifting or lying posture adjustment of the patient's upper body. The lifting motor 401 is the core power component of the structure. Its output shaft is connected to the lifting screw 404. The pushing plate 405 cooperates with the lifting screw 404 through the screw hole inside it and is guided by the positioning rod 403. When the lifting motor 401 is working, it drives the lifting screw 404 to rotate, and the pushing plate 405 slides along the positioning rod 403. The sliding of the pushing plate 405 is transmitted to the swing frame 410 through the swing connecting rod 407 and the swing sleeve 408, so that it swings around the second connecting rod 412. The top of the swing frame 410 is equipped with a lifting roller 413. The rolling surface of the lifting roller 413 acts on the bottom side of the swing support plate 15. When the pushing plate 405 moves away from the lifting motor 401, the top of the swing frame 410 swings upward, pushing the lifting screw 404 and the pushing plate 405. The lifting roller 413 pushes the swing support plate 15 to rotate around the hinge point of the first movable plate 20 and the second movable plate 21, thereby lifting the patient's upper body. Conversely, when the pushing plate 405 approaches the lifting motor 401, the top of the swing frame 410 swings downward, and the swing support plate 15 is adjusted from a sitting position to a lying position. The entire lifting adjustment process is precisely controlled by the fixed controller 12 according to the feedback data of the laser rangefinder 305 to ensure the patient's comfort and safety during the adjustment process.

[0075] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A hospital bed with intelligent electric adjustment of backrest angle, characterized in that: The bed comprises a bed leg (1), a fixed support plate (14) and a swing support plate (15); two bedside support beams (2) are arranged in parallel; and the bottom sides of both ends of the two bedside support beams (2) are respectively welded to the door-shaped bed legs (1); A fixed support plate (14) is welded to the top side of one end of the bedside support beam (2), and a swing support plate (15) is carried on the top side of the other end of the bedside support beam (2); Slide grooves are respectively provided in the opposite surfaces of the fixed support plate (14) and the swing support plate (15); a first movable plate (20) is slidably provided in the slide groove of the fixed support plate (14); a second movable plate (21) is slidably provided in the slide groove of the swing support plate (15); the second movable plate (21) is connected to the first movable plate (20) by a hinge; The upper and lower sides of the second movable plate (21) are arranged to be gap-matched with the upper and lower side walls of the chute of the swing support plate (15); the upper and lower sides of the first movable plate (20) are arranged to be gap-matched with the upper and lower side walls of the chute of the fixed support plate (14); A first support bed board (17) is fixed to the top side of the swing support board (15), a second support bed board (19) is fixed to the top side of the fixed support board (14), and a rubber column (18) is connected between the opposite surfaces of the first support bed board (17) and the second support bed board (19); The two outer side surfaces of the swing support plate (15) are rotatably connected to a swing connecting rod (16) via a pin shaft, and the bottom end of the swing connecting rod (16) is rotatably connected to the outer side of one end of the bedside support beam (2).

2. A hospital bed with intelligent electric backrest angle adjustment according to claim 1, characterized in that: The fixed support plate (14) is provided with a mounting groove inside, a push motor (29) is installed in the mounting groove, an assembly hole is provided between the mounting groove and the slide groove of the fixed support plate (14), a screw hole is provided inside the first movable plate (20), the output end of the push motor (29) is connected and installed with a push screw (28), the push screw (28) passes through the assembly hole, and the end of the push screw (28) is rotatably assembled in the screw hole inside the first movable plate (20); A second sliding hole (24) is provided on the bottom side of the swing support plate (15), a second limiting column (25) is slidably provided in the second sliding hole (24), the second limiting column (25) is fixed on the bottom side of the second movable plate (21), a limiting cap is provided at the bottom of the second limiting column (25), and the diameter of the limiting cap is greater than the width of the second sliding hole (24).

3. A hospital bed with intelligent electric backrest angle adjustment according to claim 1, characterized in that: A first sliding hole (22) is provided on the bottom side of the fixed support plate (14), a first limiting column (23) is slidably provided in the first sliding hole (22), the first limiting column (23) is fixed on the bottom side of the first movable plate (20), a limiting cap is provided at the bottom of the first limiting column (23), and the diameter of the limiting cap is greater than the width of the first sliding hole (22); A mounting seat (26) is fixed on the bottom side of the first movable plate (20) near the hinged position with the second movable plate (21), and a matching roller (27) is rotatably mounted in the mounting seat (26), and the matching roller (27) rolls on the top side of the middle part of the bedside support beam (2).

4. A hospital bed with intelligent electric backrest angle adjustment according to claim 1, characterized in that: A lifting structure (4) is installed on the bottom side of the bedside support beam (2), and the lifting structure (4) includes a swinging member (411), a second connecting rod (412) is rotatably installed in the swinging member (411), two swinging frames (410) are fixed in parallel on the second connecting rod (412), and a lifting roller (413) is rotatably installed on the top of the swinging frame (410), and the lifting roller (413) is located on the bottom side of the swinging support plate (15); The lifting structure (4) also includes a mounting frame (402), a connecting support plate (13) is fixed between the two bedside support beams (2), a lifting motor (401) is fixed on the bottom side of the connecting support plate (13), and the lifting motor (401) is composed of two connecting ears, which are respectively fixed at the two ends of the bottom side of the connecting support plate (13), and a positioning rod (403) is fixed between the two connecting ears, wherein the middle part of the two connecting ears is rotatably equipped with a lifting screw (404), and a lifting motor (401) is installed on one of the connecting ears of the mounting frame (402), and the output shaft of the lifting motor (401) is connected to one end of the lifting screw (404).

5. A hospital bed with intelligent electric backrest angle adjustment according to claim 4, characterized in that: A push plate (405) is provided between the two connecting ears of the push-up motor (401), and a positioning hole and a screw hole are provided inside the push plate (405) corresponding to the positioning rod (403) and the push-up screw rod (404), respectively. The positioning rod (403) passes through the positioning hole, and the push-up screw rod (404) is rotatably assembled in the screw hole of the push plate (405); A swing seat (406) is fixed to the bottom side of the push plate (405), a swing connecting rod (407) is rotatably installed in the swing seat (406), and a swing sleeve (408) is fixed to the other end of the swing connecting rod (407); A first connecting rod (409) is fixed between the bottoms of the two swing frames (410), and a swing sleeve (408) at the bottom of the swing link (407) is sleeved on the outside of the first connecting rod (409).

6. The hospital bed with intelligent electric backrest angle adjustment according to claim 1, characterized in that: A detection structure (3) is provided on one side of the swing support plate (15), and the detection structure (3) includes a limit plate (303), a first sliding hole is provided in the limit plate (303), a movable rod (302) is slidably provided in the first sliding hole, a measuring plate (304) is fixed to one end of the movable rod (302), a mounting plate (306) is fixed on one side of the swing support plate (15), a laser rangefinder (305) is installed on one side of the mounting plate (306), and the detection direction of the laser rangefinder (305) is set toward the measuring plate (304), a connecting seat (301) is fixed on one side of the fixed support plate (14), the other end of the movable rod (302) is installed inside the connecting seat (301), and the connecting seat (301) is fixed to the side of the hinge position of the first movable plate (20) and the second movable plate (21).

7. The hospital bed with intelligent electric backrest angle adjustment according to claim 1, characterized in that: A mattress (7) is laid on the top side of the first supporting bed board (17), the rubber column (18) and the second supporting bed board (19); the mattress (7) is a double-layer structure; a plurality of pressure sensors are arranged in a matrix at the middle joint position of the mattress (7).

8. The hospital bed with intelligent electric backrest angle adjustment according to claim 1, characterized in that: An L-shaped headboard support beam (11) is fixed to one end of the bedside support beam (2), and a pressing structure (8) is installed at the end edge of the first supporting bed board (17). The pressing structure (8) includes a movable insertion rod (81), and three limiting holes are opened at the end edge of the first supporting bed board (17). The movable insertion rods (81) are slidably inserted into the limiting holes on both sides, and the middle insertion rod (83) is inserted into the limiting hole in the middle. The top ends of the movable insertion rod (81) and the middle insertion rod (83) are fixed with the same pressing plate (82), and the pressing plate (82) is located on the top side of one end of the mattress (7).

9. A hospital bed with intelligent electric backrest angle adjustment according to claim 8, characterized in that: A spring fixing ring (85) is fixed to the bottom end of the middle plug rod (83), a spring (84) is fixed to the top of the spring fixing ring (85), the spring (84) is sleeved on the outside of the middle plug rod (83), the top end of the spring (84) is fixed to the bottom side of the pressing plate (82), a fixing plate (86) is fixed to the middle part of the inner side of the swing support plate (15), and the bottom end of the middle plug rod (83) is located on the top side of the fixing plate (86).

10. The hospital bed with intelligent electric backrest angle adjustment according to claim 1, characterized in that: A fixed controller (12) is installed on the side of the headboard support beam (11). The fixed controller (12) is connected to the pressure sensor bus in the mattress (7) by plugging. The fixed controller (12) is connected to the handheld controller (10). The fixed controller (12) is used to receive detection data from the laser rangefinder (305). At the same time, the fixed controller (12) is used for process control of the lifting motor (401) and the pushing motor (29). The fixed controller (12) is provided with an analysis module and a control module. The analysis module is used for analyzing the force points of the pressure sensor in the mattress (7).

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