Nursing bed easy to turn over

Abstract

The nursing bed comprises a bed head, a bed tail and bed side plates, a groove body is arranged in a space defined by the bed head, the bed tail and the bed side plates, a fixing rod and a rotating shaft which are parallel to the bed side plates are respectively arranged on the upper edge of the groove body, one end of the rotating shaft is connected with a driving motor or a crank, a plurality of bed belts are wound on the rotating shaft, and the bed belts are connected with the rotating shaft. One end of the bed belt is connected with the fixing rod, an auxiliary rotating shaft is arranged at the bottom of the middle part of the groove body, a main synchronous wheel and an auxiliary synchronous wheel are arranged on the rotating shaft and the auxiliary rotating shaft respectively and connected through a synchronous belt, a plurality of traction ropes are wound on the auxiliary rotating shaft, and one end of each traction rope is connected with a lantern ring arranged on the bed belt in a sleeving mode. The other end of the traction rope is connected with the auxiliary rotating shaft, and the cavity of the groove body is filled with particles. The bed has the advantages of being flexible in operation, easy to turn over, small in turning-over resistance, moderate in bed surface hardness, good in elasticity, free of middle collapse, comfortable to lie down, breathable, capable of adjusting temperature and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical rehabilitation aids, in particular to a nursing bed facilitating turning over. BACKGROUND

[0002] The nursing bed refers to a bed facility providing nursing functions for patients, meeting the bed-living habits of patients and meeting the needs of auxiliary treatment, and facilitating the accompanying care of medical staff and family members, and has more and more applications in modern medical environment and home scenarios.

[0003] For patients such as burn patients, fracture patients, paraplegic patients, critically ill patients, and elderly patients who cannot handle their lives, if they cannot turn over frequently, bedsores will occur. For patients who already have bedsores, frequent turning over can alleviate bedsores and stop the further deterioration of bedsores, and turning over the patient greatly increases the workload of the nursing staff.

[0004] Clinically, an inflatable turning-over mattress is often used to reduce the work intensity of nursing staff, which is provided with a gas cushion on the left side and the right side of the patient's lying position. By inflating and deflating the gas cushions on both sides, the turning over and lying flat of the patient are achieved. Such a gas cushion is usually made of PVC material. If the patient lies on the gas cushion for a long time, it will affect the comfort of the patient. At the same time, due to the low air permeability of the material, if it is used for a long time, a large amount of water vapor will accumulate inside the gas cushion and is not easy to discharge, increasing the humidity of the sleeping environment and affecting the sleep quality of the patient, which can easily cause rheumatic diseases of bones and joints. In addition, when using the gas cushion, attention should be paid to avoid high temperature, sharp objects, etc. If the gas cushion is damaged, there is a safety hazard, and the maintenance procedure is complex and the maintenance cost is high after the gas cushion is damaged.

[0005] For patients who have been lying in bed for a long time, an important part of the nursing activity is to turn over the patient. The body of a patient who has been lying in bed for a long time will have local pressure on the bed surface for a long time, and over time, bedsores or pressure sores will occur. Therefore, whether in a nursing clinic or at home, the patient who has been lying in bed for a long time must be turned over regularly / timely. In addition to regular turning over, the patient must also be massaged regularly, which will promote blood circulation and reduce the incidence of bedsores. After each bowel movement, the patient must be cleaned thoroughly, and regular skin cleaning can effectively reduce bacterial infection. The aforementioned bowel movement and cleaning activities are usually based on turning over the patient. Patients who have been lying in bed for a long time can also cause hypostatic pneumonia, so in addition to massage and turning over, the patient must also be buckled regularly to speed up the discharge of lung deposits.

[0006] As known from the foregoing, the turning over operation of the patient is an important operation content in the nursing process, and the quality of the turning over operation directly determines the nursing effect experienced by the patient, and also greatly affects the convenience of the nursing staff in performing the nursing activity.

[0007] Some existing nursing beds have certain auxiliary turning-over function. In structure, the existing nursing beds with auxiliary turning-over function generally have two bed plates arranged in parallel in the middle of the bed surface, which can perform independent tilting action. The tilting power is provided by a push rod motor. When turning over, the controller is used to operate one side of the turning plate to tilt and rise up, so that the patient turns over to the other side. If only half turning-over is performed, the bed plate stops at a certain angle to make the patient's body in an inclined state, so as to relieve pressure sores or bedsores caused by back pressure. If full turning-over is performed, the nursing staff holds the patient's body and slowly puts it down after the bed plate is tilted to a certain angle, so that the patient lies on the bed. This facilitates back cleaning, massage and back buckling, etc. After all the nursing activities are performed, the patient is turned over again to the original position.

[0008] The existing nursing beds with auxiliary turning-over function have the following problems: The patient's body is generally located in the middle of the bed, that is, the back midline is approximately coincident with the gap between the two bed plates. When the auxiliary turning-over mechanism operates, the patient's body is clamped between the two bed plates, which causes discomfort and even failure of turning over. In fact, before the patient turns over, the nursing staff generally shifts the patient to one side by a certain distance to deviate from the center of the bed, and then starts the bed plate on the side to tilt and turn over. It can be imagined that when the patient turns over completely (i.e. lies on the bed), the patient is turned over from one side of the bed plate to the other side of the bed plate, and the body deviates from the center of the bed. In order to perform subsequent nursing activities, the patient generally needs to be reset to the approximate middle of the bed. Therefore, when the patient turns over, the existing nursing bed is accompanied by repeated shifting operations (such as pushing, pulling, moving, etc.) of the patient by the nursing staff. Since the patient has poor self-care ability, the shifting operation can only rely on the nursing staff, which leads to high labor intensity of the nursing staff and affects the nursing effect.

[0009] Therefore, it is necessary to optimize the structure of the nursing bed to make it have more reasonable and more humanized auxiliary turning-over function. SUMMARY

[0010] The present application aims to overcome the defects in the prior art and provide a nursing bed which is easy to turn over, has simple structure, flexible operation, easy turning-over, small turning-over resistance, can make the body located in the middle of the bed surface before and after turning over, has moderate and good elastic bed surface which does not collapse in the middle, is comfortable to lie on, can ventilate and regulate temperature.

[0011] In order to achieve the above-mentioned purpose, the technical scheme of the present application is to provide an easy-to-turn-over nursing bed, which comprises a bed head, a bed tail and a bed side plate, a groove body is arranged in the space surrounded by the bed head, the bed tail and the bed side plate, a fixed rod parallel to the bed side plate and a rotating shaft are arranged on the upper edge of the groove body, the two ends of the fixed rod and the rotating shaft are respectively supported on the brackets located on the inner sides of the bed head and the bed tail, one end of the rotating shaft is connected with a driving motor or a crank handle, a plurality of bed belts are wound on the rotating shaft, one end of the bed belt is connected with the fixed rod, and the other end of the bed belt is connected with the rotating shaft, an auxiliary rotating shaft is arranged on the bottom of the groove body, the two ends of the auxiliary rotating shaft are also supported on the brackets, a main synchronous wheel and an auxiliary synchronous wheel are respectively arranged on the rotating shaft and the auxiliary rotating shaft, the main synchronous wheel and the auxiliary synchronous wheel are connected through a synchronous belt, a plurality of pull ropes are wound on the auxiliary rotating shaft, the positions and the number of the pull ropes on the auxiliary rotating shaft correspond to the positions and the number of the bed belts on the rotating shaft, one end of the pull rope is connected with a loop sleeved on the bed belt, and the other end of the pull rope is connected with the auxiliary rotating shaft, the winding direction of the bed belt on the rotating shaft is opposite to the winding direction of the pull rope on the auxiliary rotating shaft, and the cavity of the groove body is filled with granular materials.

[0012] In order to ensure that the granular materials can be in a flat state in the groove body before and after the human body turns over, and not be squeezed to the periphery of the groove body due to the turning-over action, and to heat the granular materials and the space inside the groove body, so that the human body always lies on a warm and comfortable bed body, the preferred technical scheme is that the side wall of the groove body is inclined to form a bucket structure with a large upper part and a small lower part, a graphite coating is arranged on the inner surface of the groove body, the graphite coating is electrically connected with a controller through an electrode sheet and a wire, and a heat preservation and insulation layer is arranged on the outer surface of the groove body. The inclined arrangement of the side wall of the groove body can make the granular materials squeezed to the edge flow back to the middle part automatically, and can make the upper surface of the granular materials always maintain a horizontal plane state. The graphite coating is arranged on the inner surface of the groove body in order to uniformly heat the granular materials to a comfortable state for the human body through the electric heating action of the graphite coating. The heat preservation and insulation layer is arranged on the outer surface of the groove body in order to save electric energy and avoid unnecessary electric energy consumption.

[0013] In order to reduce the frictional resistance between the bracket and the rotating shaft and the auxiliary rotating shaft, and reduce the driving resistance of the driving motor or the crank handle, the preferred technical scheme further comprises that the rotating shaft and the auxiliary rotating shaft are supported on the bracket through bearings.

[0014] In order to facilitate the control of the rotation speed, the number of rotations and the angle of rotation stop of the driving motor, and also to facilitate the manual driving of the rotation of the rotating shaft, and to facilitate the control of the tension of the bed belt according to the weight of different users, the preferred technical solution is that the driving motor comprises a servo motor, the driving shaft of the driving motor extends from both ends of the driving motor, one end of the driving shaft of the driving motor is connected to one end of the rotating shaft through a flange, the other end of the driving shaft of the driving motor is a prism, one end of the crank handle is provided with a prismatic hole matched with the prism, a torque sensor is arranged on one side of the driving shaft of the driving motor, and the driving motor and the torque sensor are electrically connected with the controller. The servo motor is used to facilitate the adjustment and control of the rotation speed, the number of rotations and the angle of rotation stop of the rotating shaft. The driving shaft of the driving motor extends from both ends of the driving motor, so that the driving shaft can be driven by the driving motor or the crank handle. The torque sensor is arranged on one side of the driving shaft of the driving motor, so that the bed belt is basically in a flat state when different weight users lie on the bed. For example, 40-50Kg can be set as one gear, 51-60Kg as two gears, 61-70Kg as three gears, 71-80Kg as four gears, and 81-100Kg as five gears. When different weight users lie on the bed, the servo motor can be stopped by the controller according to the torque data detected by the torque sensor.

[0015] In order to ensure that the several bed belts in the tightened state make the upper surface of the bed body form a soft and hard plane, so that the human body lies on it and is soft and comfortable without a sense of collapse, and also has good ventilation and heat conduction effect, the preferred technical solution is that the bed belt comprises an elastic belt woven by nylon fiber and spandex fiber blended yarn, and several steel wires are arranged in the length direction of the bed belt, the width of the bed belt is 20-50mm, the pull rope is a nylon rope, and one end of the pull rope is connected with the eye ring through a hook. The elastic belt woven by nylon fiber and spandex fiber blended yarn is used to make the bed belt have sufficient tensile strength and also have flexibility. The several steel wires arranged in the length direction of the bed belt are used to further increase the tensile strength of the bed belt. The width of the bed belt is set to 20-50mm to make the comfort and flatness of the human body lying on the bed better. The function of the pull rope is to pull the bed belt under the granular material after the rotating shaft relaxes, so that the human body can directly contact the granular material, so as to easily complete the action of turning over. Since the length of the bed belt will be lengthened after being relaxed by the rotating shaft, the end of the pull rope cannot be connected with the fixed point on the bed belt, so the eye ring is used to connect with the bed belt, and the eye ring can slide on the bed belt. The end of the pull rope is connected with the eye ring through the hook to facilitate disassembly.

[0016] In order to facilitate the installation and disassembly between the bed belt and the fixed rod, preferably, one end of the bed belt is connected with the hanging hole or the hanging ring on the fixed rod through a hook. Of course, the buckle structure or the connection structure of the belt buckle can also be used.

[0017] Since the relaxation length of the bed belt and the pulling distance of the pulling rope cannot be ensured to be completely consistent, in order to achieve the coordination between the relaxation of the bed belt and the pulling distance of the pulling rope, the main synchronous wheel and the auxiliary synchronous wheel need to have a certain transmission ratio, and preferably, the transmission ratio of the main synchronous wheel and the auxiliary synchronous wheel is 2-5:1. Of course, according to the actual use, the above transmission ratio can also be other suitable ratios.

[0018] In order to make the particles light and easy to roll, and to minimize the rolling friction between them, and to facilitate the conduction of heat generated on the inner wall of the groove to the upper surface of the bed body through the particles, preferably, the particles include hollow balls, and a heat-conducting coating is attached to the surface of the hollow balls. The hollow balls can be hollow metal balls or hollow plastic balls. In order to improve the heat conduction effect of the hollow balls, when the hollow balls are plastic balls, a heat-conducting coating needs to be attached to the surface of the hollow balls. Of course, the particles can also be sand or salt particles.

[0019] In order to avoid the formation of bedsores or pressure sores in long-term bedridden people, and to facilitate the adjustment of the temperature on the bed body, preferably, a fan is arranged on the bed tail or the bed side plate, a gas chamber is connected on one side of the air outlet surface of the fan, an air outlet main pipe is connected on the gas chamber, the air outlet main pipe is connected with an air outlet annular pipe arranged on the upper part of the groove, a plurality of air outlet openings are uniformly distributed on the air outlet annular pipe, the plurality of air outlet openings are all directed to the inside of the groove, and the fan is electrically connected with the controller. The fan can be a hot air fan, and the temperature can be adjusted. The air outlet annular pipe can be installed on the upper surface or the lower surface of the rotating shaft and the fixed rod.

[0020] In order to make the rotating shaft not rotate under the action of the bed belt tension in the use state without turning over, that is, to make the bed belt always keep tight without automatic relaxation when not turning over, that is, the rotating shaft is in the locked state, when the turning over action is needed, the locked state is released, and the rotating shaft can freely rotate, further preferred technical solutions are that a brake disc is arranged on the driving shaft of the driving motor, the brake disc is connected with the driving shaft through the spline, the brake disc is provided with a plurality of brake holes arranged in a ring array, the brake holes are matched with brake pins, the brake pins are arranged in a brake, the brake comprises a shell, a normally open electromagnetic relay is arranged in the shell, a fixed electrode of the normally open electromagnetic relay is fixedly connected with the shell, a plug hole matched with the brake pin is arranged on the fixed electrode, a spring top plate and a connecting hole fixedly connected with the brake pin are arranged on a sliding electrode of the normally open electromagnetic relay, a spring is arranged between the spring top plate and the fixed electrode, guide sliding blocks are arranged on both sides of the spring top plate, the guide sliding blocks pass through guide grooves arranged on the shell and are matched with the guide grooves in sliding mode, pull wire holes are arranged on the edges of the guide sliding blocks, a cover of the normally open electromagnetic relay is arranged on the outer side of the tail plate, the cover is also provided with pull wire holes corresponding to the positions of the pull wire holes on the guide sliding blocks, and a pull wire is arranged between the pull wire holes on the guide sliding blocks and the pull wire holes on the cover, wherein a pull ring is arranged on the cover, and one side of the cover is inserted into a plug hole on the outer side of the tail plate through a plug pin, wherein the normally open electromagnetic relay is electrically connected with a controller, and the controller is wirelessly connected with a remote controller through a wireless communication module. The brake disc can lock the rotating shaft through the brake pins, and the brake pins can control the locking or release between the brake disc through the normally open electromagnetic relay. The spring top plate connected with the brake pins can drive the brake pins to overcome the spring pressure under the action of the electromagnetic force, and the brake pins are separated from the brake holes on the brake disc. The brake pins can also separate the brake pins from the brake holes on the brake disc by pulling the guide sliding blocks on the side of the spring top plate through the pull wire, one end of the pull wire is connected with the guide sliding blocks on the side of the spring top plate, one end of the pull wire is connected with the cover, the cover is provided with a pull ring and a plug pin, and the plug pin is matched with the plug hole. When the pull ring is pulled out of the plug hole and rotated by a certain angle, the plug pin cannot be inserted back into the plug hole, the plug pin is pressed on the outer side of the tail plate, and at this time, the brake pins are also in the state of being separated from the brake disc. If the brake pins need to be inserted into the brake holes of the brake disc, the plug pin can be inserted into the plug hole by rotating the cover back to the initial position.

[0021] The nursing bed with easy turning over function has the characteristics of simple structure, flexible operation, easy turning over, small turning over resistance, body located in the middle of the bed surface before and after turning over, soft and hard bed surface, good elasticity, no middle collapse, comfortable lying, good ventilation and temperature regulation, etc.

[0022] The nursing bed in use, if the person lying on the bed needs to be assisted to turn over, only needs to rotate the rotating shaft, relaxes the several bed belts, and makes the body directly lie on the granular material. The granular material is in a fluid state, like the ocean ball or the beach, and the human body is easy to turn over on the ocean ball or the beach. Even if the person completely loses the interactive ability, he can also easily turn over with the assistance of others.

[0023] In addition, by attaching the graphite heating coating on the inner surface of the groove body, connecting the electrode, the wire and the controller, the temperature on the bed body can be controlled. The cold air or hot air can be blown to the lower part of the bed belt through the fan, the air chamber and the circulating exhaust pipe, so that the ventilation and the temperature adjustment of the bed body can be achieved. The plurality of flexible bed belts arranged at intervals can make the human body lie on the bed flat, soft and comfortable, and facilitate ventilation. When the rotating shaft relaxes the bed belt wound on the rotating shaft, the bed belt is pulled into the lower part of the granular material under the pulling of the pulling rope. At this time, the human body can directly contact with the granular material, and the human body can easily turn over on the granular material. The controller controls the driving motor, the fan and the graphite heating layer. The wireless communication module and the remote controller can be wirelessly controlled. According to the different weights of different users, the torsion sensor and the controller can be used to control the tension of the bed belt in the tight state. The rotating shaft brake mechanism can make the rotating shaft not automatically rotate under the tension of the bed belt in the normal state, and can be flexibly released when the turning-over action is needed. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the main cross-sectional structure schematic diagram of the nursing bed easy to turn over of the application;

[0025] Figure 2 is Figure 1 the A-A cross-sectional structure schematic diagram of

[0026] Figure 3 is Figure 2 the A-A cross-sectional structure schematic diagram in the turning-over use state;

[0027] Figure 4 is Figure 1 the top view structure schematic diagram;

[0028] Figure 5 is Figure 1 the B part local enlarged view of

[0029] Figure 6 is Figure 2 the C part local enlarged view of

[0030] Figure 7 is Figure 2 is a partial enlarged view of D part in the middle;

[0031] Figure 8 is Figure 3 is a partial enlarged view of E part in the middle;

[0032] Figure 9 is Figure 4 is a partial enlarged view of F part in the middle.

[0033] In the figure: 1, head of bed; 2, tail of bed; 3, side plate of bed; 4, groove body; 4.1, graphite coating; 4.2, electrode sheet; 4.3, heat preservation layer; 5, fixed rod; 6, rotating shaft; 7, support; 8, driving motor; 8.1, driving shaft; 8.2, prism; 9, crank handle; 9.1, prism hole; 10, bed belt; 11, auxiliary rotating shaft; 12, main synchronous wheel; 13, auxiliary synchronous wheel; 14, synchronous belt; 15, pull rope; 15.1, hook; 16, collar; 17, particulate matter; 18, controller; 19, torsion sensor; 20, fan; 21, air chamber; 22, main exhaust pipe; 23, exhaust ring pipe; 24, exhaust port; 25, brake disc; 25.1, brake hole; 26, brake pin; 27, brake; 28, shell; 29, normally open electromagnetic relay; 29.1, fixed electrode; 29.2, sliding electrode; 30, spring top plate; 30.1, guide sliding block; 31, spring; 32, buckle cover; 32.1, pin; 33, pull wire; 34, buckle cover pull ring. DETAILED DESCRIPTION

[0034] The specific embodiments of the present application are further described below in conjunction with the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present application, and cannot be used to limit the protection scope of the present application.

[0035] As Figures 1-8As shown, the present application is a nursing bed which is easy to turn over, comprising a head 1, a tail 2 and a side plate 3, a groove 4 is arranged in the space surrounded by the head 1, the tail 2 and the side plate 3, a fixed rod 5 and a rotating shaft 6 which are parallel to the side plate 3 are arranged on the upper edge of the groove 4, the two ends of the fixed rod 5 and the rotating shaft 6 are respectively supported on the support 7 which is arranged inside the head 1 and the tail 2, one end of the rotating shaft 6 is connected with a driving motor 8 or a crank 9, a plurality of bed belts 10 are wound on the rotating shaft 6, one end of the bed belt 10 is connected with the fixed rod 5, the other end of the bed belt 10 is connected with the rotating shaft 6, an auxiliary rotating shaft 11 is arranged on the bottom of the groove 4, the two ends of the auxiliary rotating shaft 11 are also supported on the support 7, a main synchronous wheel 12 and an auxiliary synchronous wheel 13 are respectively arranged on the rotating shaft 6 and the auxiliary rotating shaft 11, the main synchronous wheel 12 and the auxiliary synchronous wheel 13 are connected through a synchronous belt 14, a plurality of pulling ropes 15 are wound on the auxiliary rotating shaft 11, the positions and the number of the pulling ropes 15 on the auxiliary rotating shaft 11 correspond to the positions and the number of the bed belts 10 on the rotating shaft 6, one end of the pulling rope 15 is connected with a loop 16 which is sleeved on the bed belt 10, the other end of the pulling rope 15 is connected with the auxiliary rotating shaft 11, the winding direction of the bed belt 10 on the rotating shaft 6 is opposite to the winding direction of the pulling rope 15 on the auxiliary rotating shaft 11, and the cavity of the groove 4 is filled with granular materials 17. The head 1, the tail 2 and the side plate 3 can be made of wooden structural members, steel structural members or steel-wood hybrid structural members. The groove 4 can be made of resin material. The fixed rod 5 and the rotating shaft 6 can be selected from steel pipes and / or steel shafts, and the support 7 can be selected from metal supports, wooden supports or plastic supports. The crank 9 can be made of stainless steel. The auxiliary rotating shaft 11 can be made of the same material as the rotating shaft 6, and the main synchronous wheel 12, the auxiliary synchronous wheel 13 and the synchronous belt 14 can be made of rubber plastic material. The pulling rope 15 can be made of nylon rope. The loop 16 can be made of cloth belt or nylon belt.

[0036] In order to ensure that the granular materials 17 can be in a flat state in the groove 4 before and after the body turns over, and cannot be squeezed to the periphery of the groove 4 due to the turning-over action, and in order to heat the granular materials 17 and the space inside the groove 4, so that the body always lies on the warm and comfortable bed, the preferred embodiment of the present application is that the side wall of the groove 4 is arranged to be inclined, forming a bucket structure which is large at the top and small at the bottom, a graphite coating 4.1 is arranged on the inner surface of the groove 4, the graphite coating 4.1 is electrically connected with a controller 18 through an electrode sheet 4.2 and a wire, and a heat preservation and insulation layer 4.3 is arranged on the outer surface of the groove 4. The inclined arrangement of the side wall of the groove 4 can make the granular materials 17 which are squeezed to the edge automatically flow back to the middle, and can make the upper surface of the granular materials 17 always maintain a horizontal plane state. The inner surface of the groove 4 is provided with the graphite coating 4.1 in order to uniformly heat the granular materials 17 to a comfortable state for the human body through the electric heating action of the graphite coating. The outer surface of the groove 4 is provided with the heat preservation and insulation layer 4.3 in order to save electric energy and avoid unnecessary electric energy consumption.

[0037] In order to reduce the frictional resistance between the support 7 and the rotating shaft 6 and the auxiliary rotating shaft 11, and to reduce the driving resistance of the driving motor 8 or the handle 9, the preferred embodiment of the present application further has that the rotating shaft 6 and the auxiliary rotating shaft 11 are supported on the support 7 through bearings.

[0038] In order to facilitate the control of the rotating speed, the number of rotations and the angle of rotation stop of the driving motor 8, and also to facilitate the manual driving of the rotating shaft 6, and to facilitate the adjustment of the tension of the bed belt according to the weight of different users, the preferred embodiment of the present application further has that the driving motor 8 preferably adopts a servo motor, the driving shaft 8.1 of the driving motor 8 extends from both ends of the driving motor 8, one end of the driving shaft 8.1 of the driving motor is connected to one end of the rotating shaft 6 through a flange, the other end of the driving shaft 8.1 of the driving motor is a prism 8.2, one end of the handle 9 is provided with a prism hole 9.1 matched with the prism, a torque sensor 19 is arranged on one side of the driving shaft 8.1 of the driving motor, and the driving motor 8 and the torque sensor 19 are respectively electrically connected with the controller 18. The servo motor is used to facilitate the adjustment and control of the rotating speed, the number of rotations and the angle of rotation stop of the rotating shaft. The driving shaft of the driving motor extends from both ends of the driving motor, so that the driving shaft 8.1 can be driven by the driving motor 8 or the handle 9. The torque sensor 19 is arranged on one side of the driving shaft 8.1 of the driving motor, so that when different weight users lie on the bed, the bed belt 10 is basically in a flat state. For example, 40-50Kg can be set as one gear, 51-60Kg as two gears, 61-70Kg as three gears, 71-80Kg as four gears, and 81-100Kg as five gears. When different weight users lie on the bed, the servo motor can be stopped by the controller according to the torque data detected by the torque sensor 19.

[0039] In order to ensure that several bed belts 10 are in a taut state so that the upper surface of the bed body constitutes a soft and hard plane, a human body lies on the plane, and the plane is soft, comfortable and has no collapse feeling, and also has good air permeability and heat conduction effect, the preferred embodiment of the present application further has that the bed belt 10 comprises an elastic belt woven by nylon fiber and spandex fiber blended yarn, and a plurality of steel wires are arranged in the length direction of the bed belt, the width of the bed belt is 20-50 mm, the pulling rope 10 is a nylon rope, and one end of the pulling rope 15 is connected with the sleeve ring 16 through the hook 15.1. The elastic belt woven by nylon fiber and spandex fiber blended yarn is selected in order to make the bed belt have sufficient tensile strength and also have flexibility. The plurality of steel wires arranged in the length direction of the bed belt 10 are arranged in order to further increase the tensile strength of the bed belt. The width of the bed belt is set to 20-50 mm in order to make the comfort and flatness of the human body lying on the bed better. The function of the pulling rope 15 is to pull the bed belt 10 under the granular material 17 after the bed belt 10 is loosened by the rotating shaft 6, so that the human body can directly contact with the granular material 17, so as to easily complete the action of turning over. Since the length of the bed belt 10 will be lengthened after being loosened by the rotating shaft 6, one end of the pulling rope 15 cannot be connected with the fixed point on the bed belt 10, and therefore the sleeve ring 16 is connected with the bed belt 10, and the sleeve ring 16 can slide on the bed belt 10. One end of the pulling rope 15 is connected with the sleeve ring 16 through the hook 15.1 in order to facilitate disassembly.

[0040] In order to facilitate the installation and disassembly between the bed belt 10 and the fixed rod 5, the preferred embodiment of the present application further has that one end of the bed belt 10 can be connected with the hanging hole or the hanging ring on the fixed rod 5 through a hook. Of course, a buckle structure or a belt buckle connecting structure can also be used for connection.

[0041] Since the loosened length of the bed belt 10 and the pulling distance of the pulling rope 15 cannot be completely consistent, in order to make the loosening of the bed belt 10 and the pulling distance of the pulling rope 15 consistent, the main synchronous wheel 12 and the auxiliary synchronous wheel 13 need to have a certain transmission ratio, and the preferred embodiment of the present application further has that the transmission ratio of the main synchronous wheel 12 and the auxiliary synchronous wheel 13 is 2-5:1. Of course, according to actual use needs, the above transmission ratio can also be other suitable ratios.

[0042] In order to make the granular material 17 light and easy to roll, minimize the rolling friction between them, and facilitate the conduction of heat generated on the inner wall of the groove body 4 to the upper surface of the bed body through the granular material 17, the preferred embodiment of the present application further has that the granular material 17 preferably adopts a hollow ball, and a heat-conducting coating is attached to the surface of the hollow ball. The hollow ball can be a hollow metal ball or a hollow plastic ball. In order to improve the heat conduction effect of the hollow ball, when the hollow ball is a plastic ball, a heat-conducting coating needs to be attached to the surface of the hollow ball. Of course, the granular material can also be selected from sand or salt particles.

[0043] In order to avoid the long-term bedridden person generating bedsores or pressure sores, and at the same time to facilitate the adjustment of the temperature on the bed body, the preferred embodiment of the present application further has a fan 20 arranged on the bed tail 2 or the bed side plate 3, a gas chamber 21 connected on the air exhaust side of the fan 20, an air exhaust main pipe 22 connected on the gas chamber 21, an air exhaust annular pipe 23 arranged on the upper part of the groove body 4, a plurality of air exhaust openings 24 uniformly distributed on the air exhaust annular pipe 23, the plurality of air exhaust openings 24 all facing the inside of the groove body 4, and the fan 20 being electrically connected with the controller 18. The fan 20 can be selected as a hot air fan, and the temperature can be adjusted. The air exhaust annular pipe 23 can be installed on the upper surface or the lower surface of the rotating shaft 6 and the fixed rod 5.

[0044] In order to make the rotating shaft 6 not rotate under the tension of the bed belt 10 in the use state without turning over, that is, to make the bed belt 10 always keep tight without automatically relaxing when not turning over, that is, the rotating shaft 6 is in a locked state, when the turning over action is needed, the locked state is released, and the rotating shaft 6 can freely rotate, the further preferred embodiment of the present application further has that a brake disc 25 is arranged on the driving shaft 8.1 of the driving motor 8, the brake disc 25 is connected with the driving shaft 8.1 through the spline, the brake disc 25 is provided with a plurality of brake holes 25.1 arranged in a ring array, the brake holes 25.1 are matched with the brake pin 26, the brake pin 26 is arranged in the brake 27, the brake 27 includes a shell 28, the shell 28 is provided with a normally open electromagnetic relay 29, the fixed electrode 29.1 of the normally open electromagnetic relay 29 is fixedly connected with the shell 28, and the fixed electrode 29.1 is provided with a plug hole matched with the brake pin 26, the sliding electrode 29.2 of the normally open electromagnetic relay 29 is provided with a spring top plate 30 and a connecting hole fixedly connected with the brake pin 26, the spring 31 is arranged between the spring top plate 30 and the fixed electrode 29.1, the guide sliding block 30.1 is arranged on both sides of the spring top plate 30, the guide sliding block 30.1 passes through the guide groove arranged on the shell 28 and is matched with the guide groove in sliding, the pull line hole is arranged on the edge of the guide sliding block 30.1, the cover 32 of the normally open electromagnetic relay 29 is arranged on the outer side of the bed tail plate 2, the cover 32 is also provided with the pull line hole corresponding to the position of the pull line hole on the guide sliding block 30.1, the pull line 33 is arranged between the pull line hole on the guide sliding block 30.1 and the pull line hole on the cover 32, wherein the cover 32 is provided with the cover pull ring 34, one side of the cover 32 is inserted into the plug hole on the outer side of the bed tail plate 2 through the plug pin 32.1, wherein the normally open electromagnetic relay 29 is electrically connected with the controller 18, the controller 18 is wirelessly connected with the remote controller through the wireless communication module. The brake disc 25 can lock the rotating shaft 6 through the brake pin 26, the brake pin 26 can control the locking or release between the brake disc 25 through the normally open electromagnetic relay 29. Under the action of the electromagnetic force, the spring top plate 30 connected with the brake pin 26 can drive the brake pin 26 to overcome the pressure of the spring 31, and the brake pin 26 is separated from the brake hole 25.1 on the brake disc 26. The brake pin 26 can also separate the brake pin 26 from the brake hole 25.1 on the brake disc 25 by pulling the guide sliding block 30.1 on the side of the spring top plate 30 through the pull line 33. One end of the pull line 33 is connected with the guide sliding block 30.1 on the side of the spring top plate 30, one end of the pull line 33 is connected with the cover 32, the cover 32 is provided with the pull ring 34 and the plug pin 32.1, the plug pin 32.1 is matched with the plug hole. When the pull ring 34 is pulled to pull the cover 32 out of the plug hole 30.1 and rotate a certain angle, the plug pin 30.1 cannot be inserted back into the plug hole, the plug pin 30.1 is pressed on the outer side of the bed tail plate 2, at this time, the brake pin 26 also stays in the state of being separated from the brake disc 25.If it is necessary to insert the brake pin 26 into the brake hole 25.1 of the brake disc 25, it is only necessary to turn the cover 32 back to the initial position so that the pin 30.1 is inserted into the socket.

[0045] The above only is the preferred embodiment of the present application, it should be pointed out that, for the ordinary skilled in the art, without departing from the technical principles of the present application, can also make several improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A nursing bed that is easy to turn over, characterized in that: The nursing bed comprises a headboard, a footboard and bedside boards, a trough body is provided in the space surrounded by the headboard, the footboard and the bedside boards, a fixing rod and a rotating shaft are provided on the upper edge of the trough body, and both ends of the fixing rod and the rotating shaft are supported on brackets located on the inner sides of the headboard and the footboard, one end of the rotating shaft is connected to the driving motor or the crank, and a plurality of bed belts are wound around the rotating shaft, one end of the bed belt is connected to the fixing rod, and the other end of the bed belt is connected to the rotating shaft, an auxiliary rotating shaft is provided at the bottom of the middle part of the trough body, and both ends of the auxiliary rotating shaft are also supported on the supporting On the frame, a main synchronous wheel and an auxiliary synchronous wheel are respectively provided on the rotating shaft and the auxiliary rotating shaft. The main synchronous wheel and the auxiliary synchronous wheel are connected by a synchronous belt. A plurality of pulling ropes are wound on the auxiliary rotating shaft. The positions and numbers of the plurality of pulling ropes on the auxiliary rotating shaft correspond to the positions and numbers of the bed belts on the rotating shaft. One end of the pulling rope is connected to the ring on the bed belt, and the other end of the pulling rope is connected to the auxiliary rotating shaft. The winding direction of the bed belt on the rotating shaft is opposite to the winding direction of the pulling rope on the auxiliary rotating shaft. The cavity of the trough body is filled with particulate matter.

2. The nursing bed that is easy to turn over according to claim 1, characterized in that: The side walls of the trough are arranged obliquely to form a bucket structure with a larger upper portion and a smaller lower portion. A graphite coating is provided on the inner surface of the trough, which is electrically connected to the controller through electrode sheets and wires. A thermal insulation layer is provided on the outer surface of the trough.

3. The nursing bed that is easy to turn over according to claim 1, characterized in that: The rotating shaft and the auxiliary rotating shaft are supported on the bracket through bearings.

4. The nursing bed that is easy to turn over according to claim 1, characterized in that: The drive motor includes a servo motor, and the drive shaft of the drive motor extends from both ends of the drive motor respectively. One end of the drive shaft of the drive motor is connected to one end of the rotating shaft through a flange, and the other end of the drive shaft of the drive motor is a prism. One end of the crank is provided with a prismatic hole adapted to the prism, and a torque sensor is provided on one side of the drive shaft of the drive motor. The drive motor and the torque sensor are electrically connected to the controller respectively.

5. The nursing bed that is easy to turn over according to claim 1, characterized in that: The bed belt includes an elastic belt woven from nylon fiber and spandex fiber blended yarn, and a plurality of steel wires are provided in the length direction of the bed belt. The width of the bed belt is 20mm~50mm. The pulling rope is a nylon rope, and one end of the pulling rope is connected to the ring through a hook.

6. The nursing bed that is easy to turn over according to claim 1, characterized in that: One end of the bed strap is connected to a hanging hole or a hanging ring on the fixing rod through a hook.

7. The nursing bed that is easy to turn over according to claim 1, characterized in that: The transmission ratio of the main synchronous wheel to the auxiliary synchronous wheel is 2~5:

1.

8. The nursing bed that is easy to turn over according to claim 1, characterized in that: The particles include hollow balls, and a heat-conducting coating is attached to the surface of the hollow balls.

9. The nursing bed that is easy to turn over according to claim 1, characterized in that: A fan is provided at the foot of the bed or at the side panel of the bed, an air chamber is connected to one side of the exhaust surface of the fan, an exhaust main pipe is connected to the air chamber, the exhaust main pipe is connected to an exhaust annular pipe provided at the upper part of the trough body, a plurality of exhaust ports are distributed on the exhaust annular pipe, and the plurality of exhaust ports are all facing the inner side of the trough body, and the fan is electrically connected to the controller.

10. The nursing bed that is easy to turn over according to claim 4, characterized in that: A brake disc is provided on the driving shaft of the driving motor, and the brake disc is connected to the driving shaft through a spline. The brake disc is provided with a plurality of brake holes in an annular array, and the brake holes cooperate with the brake pins. The brake pins are provided in the brake, and the brake includes a housing, a normally open electromagnetic relay is provided in the housing, a fixed electrode of the normally open electromagnetic relay is fixedly connected to the housing, and a jack is provided on the fixed electrode for sliding cooperation with the brake pin, a spring top plate and a connection hole fixedly connected to the brake pin are provided on the sliding electrode of the normally open electromagnetic relay, a spring is provided between the spring top plate and the fixed electrode, and a spring is provided on the spring top plate. Guide sliders are provided on both sides, which pass through the guide grooves provided on the shell and slide in cooperation with the guide grooves. A wire pulling hole is provided on the edge of the guide slider, and a buckle cover of a normally open electromagnetic relay is provided on the outer side of the footboard. The buckle cover is also provided with a wire pulling hole corresponding to the position of the wire pulling hole on the guide slider. A wire is provided between the wire pulling hole on the guide slider and the wire pulling hole on the buckle cover, and a buckle cover pull ring is provided on the buckle cover. One side of the buckle cover is plugged into the jack on the outer side of the footboard through a pin. The normally open electromagnetic relay is electrically connected to the controller, and the controller is wirelessly connected to the remote control through the wireless communication module.

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