A bed

Abstract

The present invention provides a bed. The bed surface of the bed is composed of a first couch part, a third couch part and a fourth couch part that can be raised and lowered, and a fixed second couch part. Each couch part is equipped with a plurality of rollers. The first couch part, the third couch part and the fourth couch part are movable couch parts. The rotating shaft of the roller at the root of the movable couch part is inserted into the preset hole of the bed frame, and the movable couch part can be rotated and raised around the rotating shaft. A reversing roller is arranged near the lower part of the rotating shaft. The conveyor belt detours through the reversing roller under the lower part of the third couch part and the fourth couch part. Each time after bypassing the top roller of the couch part, it returns to the root of the couch part along the other side of the couch part, bypasses the reversing roller there, and then turns around to move forward to the destination. In this way, it can ensure that each frame can be raised and lowered freely, realize the adjustment of the patient's posture, and can smoothly convey the patient when all the frames are flat. The conveyor belt in the bed drags the mattress and the patient together by friction, and the mattress and the conveyor belt are gradually separated from the elastic belt at the end of the bed.

Description

Technical Field

[0001] The present invention relates to the field of medical care equipment, and in particular to a bed. Background Art

[0002] For patients or elderly people who are bedridden due to physical illness, when changing bedding, bathing, traveling, surgery, examination, treatment and other activities occur, they need to transfer from the current bedding to another bedding or other equipment that can support the patient's body (such as a wheelchair). Since the patient has lost the ability to move independently, he usually needs help from others. The traditional way to transfer patients or elderly people is to use manual transportation, which is heavy physical labor for caregivers or porters. When the patient loses consciousness or the condition is very serious, it often takes the joint efforts of multiple people to transport the patient. Especially for patients who have just finished surgery, they must first be moved from the operating table to the transfer vehicle, pushed to the ward, and then moved from the transfer vehicle to the bed. On the one hand, this kind of transportation requires a relatively high physical strength of the carrier, and on the other hand, it is likely to cause pain and secondary injuries to the patient during the transportation process, thereby affecting the treatment effect. In order to more easily transport patients to a transfer vehicle or wheelchair, the prior art discloses a variety of patient transfer devices.

[0003] For example, the Chinese patent with the authorization announcement number CN201642698U discloses a bed and wheelchair automatic displacement system, in which the hospital bed in the system includes a bed frame, a bed board, a bed surface conveyor belt mechanism and a first bed board lifting mechanism; the bed board is composed of at least two bed boards at the head and foot of the bed, and the tail end of the bed board at the foot of the bed is hinged relative to the bed frame, and the first bed board lifting mechanism acts on the bed board at the foot of the bed and drives the bed board at the foot of the bed to flip up to the side of the bed. The bed surface conveyor belt mechanism includes a head roller, a foot roller and a bed surface conveyor belt, and the head roller and the foot roller are arranged parallel to each other at the head and foot ends of the bed frame, and the bed surface conveyor belt is laid on the upper side of the bed board, and its two ends are wound on the head roller and the foot roller.

[0004] In the above patent, the bed conveyor belt is driven to move by the rotation of the head and foot rollers to transfer the patient. When the patient moves close to the foot of the bed, the bed board at the foot of the bed can be driven to flip up toward the foot of the bed, thereby changing the patient's position from lying to sitting, and then transferring the patient to a matching wheelchair.

[0005] Although the automatic displacement system can meet the needs of transferring patients to a certain extent, it has a defect: the bed conveyor belt is laid on the upper side of the bed board. In the process of turning up the bed board at the end of the bed, the length of the conveyor belt is required to be continuously lengthened, so the length of the bed conveyor belt needs to be continuously adjusted during use, otherwise it is easy to slip. This defect is common in patient transfer devices that use conveyor belts and have the function of turning up patients. In order to solve this defect, the prior art also discloses various mechanisms for adjusting the length of the conveyor belt in patient transfer devices.

[0006] For example, a Chinese patent document with patent application number CN104523382A discloses a conveyor belt emergency bed, which discloses the use of a tensioning roller and a steering roller to tension the conveyor belt. Technicians in this field can also use the tensioning roller and the steering roller to adjust the conveyor belt.

[0007] Currently, there are various mechanisms for adjusting the length of the conveyor belt in the patient transfer device, but the step of "adjusting the length" is still unavoidable. The current direction of improvement is also based on the idea of ​​compensating for the change in the length of the conveyor belt, and studying how to design the conveyor belt length adjustment mechanism to be more streamlined. Summary of the invention

[0008] The main technical problem solved by the present invention is to provide a bed, the user of which can change his body position between lying and sitting positions. At the same time, a conveyor belt can be used to change the user's own position without changing his body position. When the user changes between lying and sitting positions, the step of adjusting the length of the conveyor belt can be omitted.

[0009] According to the first aspect, an embodiment provides a bed, comprising:

[0010] a bed frame for providing support for at least part of the bed;

[0011] A bed surface, which is used to provide an area for a user to lie down, has a bed surface head portion and a bed surface tail portion, and the bed surface includes at least two lying portions supported side by side on a bed frame;

[0012] The couch portion has a first end facing the head or tail of the bed surface and a second end opposite to the first end. The couch portion includes a fixed couch portion and a movable couch portion. The first end of the movable couch portion is provided with a rotating component, and the rotating component is rotatably mounted on the bed frame, so that the movable couch portion can be turned up from a horizontal state to a tilted state with the rotating component as a rotating axis under the action of an external force toward the head or tail of the bed surface;

[0013] The fixed couch portion includes a second couch portion, the second couch portion is located in the area where the buttocks of the user are located after lying on the bed surface, and the second couch portion is provided with a first gap that passes through the upper surface and the lower surface of the bed surface;

[0014] The movable couch portion includes a first couch portion, a third couch portion and a fourth couch portion;

[0015] The first couch portion is located in the area where the upper body of the user lies on the bed surface, the third couch portion is located in the area where the thighs of the user lie on the bed surface, and the fourth couch portion is located in the area where the calves of the user lie on the bed surface;

[0016] The second end of the first couch portion faces the head of the bed surface, the second end of the third couch portion and the second end of the fourth couch portion face each other and there is a second gap between the two that passes through the upper and lower surfaces of the bed surface, the first end of the third couch portion faces the head of the bed surface, and the first end of the fourth couch portion is close to the tail of the bed surface;

[0017] a reversing roller, which is rotatably fixed on the bed frame and is located below the fourth couch portion and close to the first end of the fourth couch portion;

[0018] A tensioning roller, which is rotatably arranged, and the tensioning roller is located below the third couch portion and close to the third couch portion;

[0019] A driving mechanism, used for providing power, wherein the driving mechanism is fixed on the bed frame and located under the bed surface;

[0020] A guide mechanism, comprising at least a first guide roller and a second guide roller, wherein the first guide roller and the second guide roller are rotatably fixed on the bed frame and are located between the tail end of the bed surface and the head end of the bed surface in sequence, and the first guide roller is close to the tail end of the bed surface;

[0021] A conveyor belt, the conveyor belt is coupled to the power output end of the driving mechanism, the conveyor belt passes through the first gap from the power output end to the upper surface of the bed surface, and then extends to the head and tail of the bed surface and passes from the head and tail of the bed surface to the bottom of the bed surface, the conveyor belt passing from the tail of the bed surface to the bottom of the bed surface is sequentially wound around the first guide roller and the second guide roller, and extends to the head of the bed surface;

[0022] The portion of the conveyor belt located in the second gap passes through the second gap to below the bed surface, and the portion passes through the reversing roller and the tensioning roller in sequence to form a detour structure, the detour structure and the driving mechanism of the conveyor belt are respectively located between the portion of the conveyor belt between the first guide roller and the second guide roller and the bed surface, the portion of the conveyor belt located above the bed surface is attached to the bed surface, the portion of the conveyor belt located between the fourth couch portion and the reversing roller is attached to the fourth couch portion, and the portion of the conveyor belt located between the third couch portion and the tensioning roller is attached to the third couch portion;

[0023] The conveyor belt can perform bidirectional cyclic reciprocating motion under the action of the driving mechanism.

[0024] Furthermore, the guide mechanism further includes at least two third guide rollers, the third guide rollers are fixed on the bed frame and located under the bed surface, the first guide rollers and the third guide rollers are arranged in sequence and spaced apart, and the connecting line between the first guide roller and the adjacent third guide rollers and the bed surface forms a receiving space, and the portion of the conveyor belt that passes under the bed surface is located in the receiving space;

[0025] The bed also includes:

[0026] Mattress pads;

[0027] An elastic belt, one end of the elastic belt is connected to one end of the mattress, and the other end of the elastic belt is connected to the other end of the mattress, so that the elastic belt and the mattress form an annular belt, the bed surface and the conveyor belt are respectively located inside the annular belt, and the portion of the annular belt located below the bed surface is wound around the first guide roller and the third guide roller, so that the portion of the elastic belt located above the bed surface exerts a force on the conveyor belt and moves with the movement of the conveyor belt.

[0028] Furthermore, it also includes:

[0029] The lifting mechanism is located below the bed surface, and the lifting mechanism applies a force to the movable couch portion, so that the movable couch portion is turned up from a horizontal state to a tilted state at the head or tail of the bed surface with the rotating component as the rotating axis under the action of external force.

[0030] Further, the driving mechanism comprises a motor and a roller, the motor drives the roller to rotate, radially extending pawls are evenly spaced at both ends of the roller, and grooves or holes corresponding to the pawls are evenly spaced at both sides of the conveyor belt; or

[0031] The driving mechanism comprises a motor and a roller. The motor drives the roller to rotate. The conveyor belt passes around the roller and moves under the action of the static friction force of the roller.

[0032] Furthermore, it also includes:

[0033] A slide rail corresponding to the tensioning roller, the slide rail being fixed on the third couch portion and located below the third couch portion, the slide rail being substantially parallel to the third couch portion;

[0034] The tensioning roller is movably installed in the slide rail, and as the tensioning roller moves in the slide rail, the conveyor belt becomes more tensioned or relaxed.

[0035] First, the bed is not provided with a length adjustment mechanism, so that the structure of the entire bed is simpler; secondly, the bed is easy to operate. Compared with the traditional patient transfer device, the operator who controls the bed has less physical contact with the user of the bed, which can reduce the secondary injury to the user (such as a patient or an elderly person) during the process of carrying the user. In addition, a reversing roller is provided under the fourth couch section of the bed, and a tensioning roller is provided under the third couch section adjacent to the fourth couch section. The conveyor belt passing through the fourth couch section passes through the gap and passes through the reversing roller and the tensioning roller to form a circuitous structure under the bed surface. The circuitous structure makes it possible for the length of the conveyor belt attached to the upper and lower surfaces of the third couch section and / or the fourth couch section to hardly change during the rotation process, so that the length of the entire conveyor belt does not change. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a simplified schematic diagram of the structure of the bed footboard flipping over the bed surface in the bed;

[0037] Figure 2 This is a structural schematic diagram of a bed in one embodiment;

[0038] Figure 3 A schematic structural diagram of a first couch portion and a third couch portion of a bed in an embodiment of the present invention in an inclined state;

[0039] Figure 4 A simplified schematic diagram of a bed surface structure of a bed in one embodiment;

[0040] Figure 5 This is a schematic structural diagram of a wheelchair matched with a bed according to an embodiment;

[0041] Figure 6 It is a simplified schematic diagram of the structure of a bed in one embodiment when used in conjunction with a wheelchair;

[0042] Figure 7 A schematic diagram of the structure when a user transfers to a wheelchair according to an embodiment;

[0043] Figure 8 A simplified schematic diagram of the structure of an embodiment in which the fourth couch portion is in a horizontal state;

[0044] Fig. 9 It is a simplified schematic diagram of the structure of a fourth couch portion in an embodiment in a flipped state. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are for making the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different situations, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification, this is to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0046] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0047] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0048] The bed in the present invention is usually used as a bed for users (such as patients) to lie down. When the patient needs to be transferred from the bed to another bed or chair, the bed is used as a device for transferring the patient. Figure 1 , Figure 1 The device includes a wheelchair W, a bed headboard L1, a bed footboard L2, a conveyor belt L3, and a patient P lying on the conveyor belt L3. The working principle of the patient transfer device in the figure is described below:

[0049] The bed surface is composed of a bed headboard L1 and a bed footboard L2. In the figure, the left side of the bed surface is the bed head, and the right side of the bed surface is the bed foot. The bed footboard L2 can be turned around the rotating shaft at the bed foot to the bed foot, so that it changes from a horizontal state to an inclined state, and the wheelchair W docks with the bed foot. The bed surface is used to provide support for the patient P. When the patient P lies on the bed surface, his head faces the bed head.

[0050] The conveyor belt L3 is laid on the bed surface and can move from the head of the bed to the foot of the bed. As the conveyor belt L3 moves, the patient P is transported from a position near the head of the bed to a position near the foot of the bed. When the buttocks of the patient P are transported to the wheelchair W, the bed board L2 at the foot of the bed can be flipped toward the foot of the bed, so that the patient changes from a lying position to a sitting position, and the patient is transferred from the bed surface to the wheelchair W.

[0051] Depend on Figure 1 It can be seen that when the bed board L2 at the end of the bed is not turned over, the length of the conveyor belt L3 above the bed surface is equal to the distance between point A and point B plus the distance between point B and point C, that is, equal to AB+BC, that is, the length of the conveyor belt is the same as the length of the bed surface. After the bed board L2 at the end of the bed is turned over, the end of the bed board L2 at the end of the bed is raised, and the conveyor belt L3 is raised as it is raised. Figure 1It can be seen that the part of the conveyor belt L3 located above the bed surface forms a triangle with the bed surface. The length of the conveyor belt L3 located above the bed surface is equal to the distance between point A and point D plus the distance between point D and point C, that is, the length of the conveyor belt L3 located above the bed surface is the sum of the two sides of the triangle. Since the sum of the two sides of the triangle is greater than the third side, the length of the conveyor belt L3 located above the bed surface is greater than the length of the bed surface. The height of the end of the bed board L2 at the end of the bed is different, and the length of the conveyor belt L3 located above the bed surface is also different. In other words, as the bed board L3 at the end of the bed is turned upward, the length of the conveyor belt is required to be continuously increased. In other words, the turning of the bed board L3 at the end of the bed affects the length of the conveyor belt. At present, similar patient transfer devices require an adjustment mechanism to adjust the length of the conveyor belt. Otherwise, if the length of the conveyor belt L3 remains unchanged, the bed board L2 at the end of the bed cannot be turned up, or the conveyor belt L3 is in an overly loose state after the bed board L2 at the end of the bed is laid flat, and the excess conveyor belt is irregularly pulled down, affecting the normal operation of other mechanisms.

[0052] The present invention intends to eliminate the need for an adjustment mechanism for adjusting the length of the conveyor belt. Instead, the conveyor belt is introduced under the bed surface through the gap between the bed boards, and then introduced onto the bed surface through a reversing rod, so that the length of the conveyor belt will not be affected regardless of whether the bed board at the end of the bed is flipped over.

[0053] Please refer to Figure 2 This embodiment provides a bed, including a bed frame 10, a bed surface 20, a driving mechanism, a guiding mechanism, a conveyor belt 40, a mattress 81 and an elastic belt 82.

[0054] The bed frame 10 is used to provide support for at least part of the bed. The bed frame 10 can be made of materials such as steel bars and carbon fibers. Usually, the bed frame 10 is placed on the ground.

[0055] The bed surface 20 is used to provide an area for users to lie down. The users may be seriously ill patients, elderly people or other people with limited mobility. The bed surface 20 has a bed surface head and a bed surface tail. The bed surface 20 includes at least two couch portions supported side by side on the bed frame 10, and the couch portions have a first end facing the bed surface head or tail and a second end opposite to the first end. The above-mentioned couch portions include two types of couch portions, a fixed couch portion and a movable couch portion.

[0056] The fixed couch part is fixedly mounted on the bed frame. The first end of the movable couch part is provided with a rotating component, and the rotating component is rotatably mounted on the bed frame, so that the movable couch part can be turned up from a horizontal state to a head or tail of the bed surface in an inclined state with the rotating component as a rotating axis under the action of external force.

[0057] Figure 2 as well as Figure 3In the embodiment, the couch portion of the bed surface 20 includes the first couch portion 21, the second couch portion 22, the third couch portion 23 and the fourth couch portion 24 from the head portion to the tail portion of the bed surface. The second end of the first couch portion 21 is close to the head portion of the bed surface, the second end of the third couch portion 23 is adjacent to the second end of the fourth couch portion 24, and the first end of the fourth couch portion 24 is close to the tail portion of the bed surface. Figure 4 As shown, the first couch portion 21 is located in the area where the upper body S1 of the user is located when the user lies on the bed surface 20, the second couch portion 22 is located in the area where the buttocks S2 of the user are located when the user lies on the bed surface 20, the third couch portion 23 is located in the area where the thighs S3 of the user are located when the user lies on the bed surface 20, and the fourth couch portion 24 is located in the area where the calves (not shown in the figure) of the user are located when the user lies on the bed surface 20.

[0058] In other embodiments, the bed surface 20 may also include more or fewer couch portions, which may be determined based on the length requirements of the bed and market demand.

[0059] In this embodiment, the second couch portion 22 is a fixed couch portion, and the second couch portion 22 is provided with a first gap 20a that passes through the upper surface and the lower surface of the bed surface 20; the first couch portion 21, the third couch portion 23 and the fourth couch portion 24 are movable couch portions, and the first couch portion 21 can be turned up from a horizontal state to the tail of the bed surface under the action of an external force to be in an inclined state, and the third couch portion 23 can be turned up from a horizontal state to the head of the bed surface under the action of an external force to be in an inclined state; the fourth couch portion 24 can be turned up from a horizontal state to the tail of the bed surface under the action of an external force. The third couch portion 23 is flipped up and in an inclined state, with the second end of the third couch portion 23 and the second end of the fourth couch portion 24 facing each other and a second gap 20b penetrating the upper and lower surfaces of the bed surface 20 being provided therebetween. The first end of the third couch portion 23 faces the head of the bed surface, and a reversing roller 26 is provided below the fourth couch portion 24 near its first end. For example, the reversing roller 26 can be provided directly below or obliquely below the rotating component 25a of the fourth couch portion 24, and a tensioning roller 61 corresponding to the reversing roller 26 is provided below the third couch portion 23.

[0060] As a preferred solution, the bed surface 20 includes a plurality of rollers 20c arranged side by side, the couch portion includes a plurality of the rollers 20c, and the number of rollers 20c included in the couch portion can be set according to actual needs. The rotating component 25a is the rotating shaft of the roller 20c, which is inserted into a preset socket on the bed frame 10, and the first gap 20a can be the gap between two adjacent rollers 20c.

[0061] A lifting mechanism may be provided to provide an external force to the above-mentioned couch portions, and the lifting mechanism applies a force to the movable couch portions, so that the above-mentioned couch portions are turned upward from a horizontal state to an inclined state, for example Figure 3As shown, the first lifting device 31 pushes the first couch section 21 and the third couch section 23 to rotate and lift, and the second lifting device 32 pushes the fourth couch section 24 to rotate and lift.

[0062] The driving mechanism is fixed on the bed frame 10 and is located under the bed surface 20 for providing power. In this embodiment, the driving mechanism is located under the second couch portion 22 .

[0063] The guide mechanism includes a first guide roller 51, a second guide roller 52 and two third guide rollers 53. The first guide roller 51 and the second guide roller 52 are respectively rotatably fixed on the bed frame 10 and are located between the tail of the bed surface and the head of the bed surface in sequence, and the first guide roller 51 is close to the tail of the bed surface. Specifically, the first guide roller 51 is located between the tail of the bed surface and the reversing roller 26 below the fourth couch 24 along the horizontal direction of the bed surface 20, the first guide roller 51 is at least partially located below the reversing roller 26 along the vertical direction of the bed surface 20, the second guide roller 52 is located between the head of the bed surface and the driving mechanism along the horizontal direction of the bed surface 20, and the second guide roller 52 is at least partially located below the driving mechanism along the vertical direction of the bed surface 20. The third guide roller 53 is fixed on the bed frame 10 and is located below the first guide roller 51 and the second guide roller 52. The first guide roller 51 and the third guide roller 53 are arranged in sequence at intervals, and the first guide roller 51 and the adjacent third guide roller 53, and the connecting line between the adjacent third guide rollers 53 and the bed surface 20 enclose an accommodation space.

[0064] The conveyor belt 40 is coupled to the power output end of the driving mechanism. After the conveyor belt 40 passes through the first gap 20a from the power output end to the upper surface of the bed surface 20, it extends to the head and tail of the bed surface respectively and passes through the head and tail of the bed surface to the bottom of the bed surface 20. The conveyor belt 40 passing from the tail of the bed surface to the bottom of the bed surface 20 is successively wrapped around the first guide roller 51 and the second guide roller 52, and extends to the head of the bed surface. The part of the conveyor belt 40 that passes around under the bed surface 20 is located in the above-mentioned accommodation space.

[0065] When the conveyor belt 40 extends toward the rear of the bed surface and passes through the second gap 20b, the portion located at the second gap 20b passes through the second gap 20b to the bottom of the bed surface 20, and the portion sequentially passes through the reversing roller 26 and the tensioning roller 61 to form a circuitous structure. The circuitous structure and driving mechanism of the conveyor belt 40 are respectively located between the portion of the conveyor belt 40 between the first guide roller 51 and the second guide roller 52 and the bed surface 20. In this way, the circuitous portion of the conveyor belt 40 will not come into contact and friction with other portions of the conveyor belt 40 under the bed surface 20, thereby avoiding the generation of static electricity.

[0066] The following is an explanation of the movement path of the conveyor belt 40: Assume that there is a reference point on the conveyor belt 40 that is relatively stationary with respect to the conveyor belt 40. The reference point moves from the top of the bed surface 20 to the bottom of the bed surface as the conveyor belt 40 moves. The reference point first adheres to the upper surface of the bed surface 20 and passes through the first couch portion 21 until it reaches the first gap 20a, then passes through the first gap 20a to enter the bottom of the bed surface 20 and passes through the drive mechanism, and then passes through the first gap 20a to the upper surface of the bed surface 20, and passes through the second couch portion 22 and the third couch portion 23 in sequence while remaining attached to the upper surface of the bed surface 20, until it reaches the second gap 20b. The reference point passes through the second gap 20b to enter the bottom of the bed surface 20 and turns to move toward the top of the bed surface. In the process of moving toward the top of the bed surface, it remains attached to the lower surface of the third couch portion 23. This process can also be regarded as the reference point moving toward the top of the bed surface after passing the second end of the third couch portion 23. Next, after the reference point reaches the tension roller 61 and then passes through the tension roller 61, it turns to move toward the reversing roller 26, and after reaching the reversing roller 26, it passes through the reversing roller 26 and turns to move toward the second end of the fourth couch section 24, that is, the direction of the head of the bed surface. In the process of moving toward the head of the bed surface, it remains attached to the lower surface of the fourth couch section 24 until it reaches the second gap 20b again, and then the reference point passes through the second gap 20b to the top of the bed surface 20 and continues to move toward the tail of the bed surface. After reaching the tail of the bed surface, it passes from the tail of the bed surface to the bottom of the bed surface 20, passes through the first guide roller 51 and the second guide roller 52, and finally moves toward the head of the bed surface, completing the movement around the bed surface 20. It can be seen that the conveyor belt 40 does not move directly from the third couch section 23 to the fourth couch section 24, but passes through the second gap 20b and detours below the bed surface 20.

[0067] One end of the mattress pad 81 is connected to one end of the elastic band 82, and the other end of the mattress pad 81 is connected to the other end of the elastic band 82. For example, one end of the mattress pad 81 is sewn to one end of the elastic band 82, and the other end and the other end of the elastic band 82 are sewn with matching nylon hooks to facilitate loading and unloading. The mattress pad 81 and the elastic band 82 form an annular belt, and the bed surface 20 and the conveyor belt 40 are respectively located inside the annular belt. The part of the annular belt located below the bed surface 20 is wound around the first guide roller 51 and the third guide roller 53, so that the part of the elastic band 82 located above the bed surface 20 exerts a force on the conveyor belt 40 and moves with the movement of the conveyor belt 40. The mattress pad 81 is used for users to lie down. Preferably, bed sheets and pillows and other bedding items for users to use can be detachably arranged on the mattress pad 81, for example, the bed sheets and pillows are fixed to the mattress pad 81 by nylon hooks.

[0068] The working principle of the bed is explained below:

[0069] The bed has the functions of providing a lying area for the user and allowing the user to change body position when lying on the bed, and also has the functions of transferring the user and allowing the user to change body position when transferring.

[0070] When the user lies on the bed surface 20, the first couch portion 21 provides support for the user's upper body S1 (such as the waist or back), the second couch portion 22 provides support for the user's buttocks S2, the third couch portion 23 provides support for the user's thighs S3, and the fourth couch portion 24 provides support for the user's calves (not shown in the figure), thereby realizing the function of the bed providing a couch area.

[0071] like Figure 4 The figure shows a simplified diagram of the structure of the bed surface 20 of the bed of this embodiment. When the first couch portion 21 is flipped up from a horizontal state to an inclined state at the tail end of the bed surface, the upper body S1 of the user is also raised accordingly. When the third couch portion 23 is flipped up from a horizontal state to an inclined state at the head end of the bed surface, the thigh S3 of the user is also lifted up accordingly, thereby realizing the function of changing the body position of the user when lying on the bed, while the buttocks S2 of the user are still located on the second couch portion 22.

[0072] In order to realize the functions of transferring users and changing the user's position when lying or transferring, the bed also needs to be equipped with transfer equipment such as transfer beds and transfer wheelchairs. Figure 5 The figure shows a wheelchair for transport used in conjunction with the bed of the present embodiment, the wheelchair comprising a chair frame 210, front wheels 211, rear wheels 212, a seat 220, a backrest 230 and armrests 240 arranged on the chair frame, the seat 220 being located below the backrest 230, seat rollers 221 are arranged at the front and rear of the seat 220 for the convenience of the patient to move thereon, the backrest 230 is detachable, for example, designed to be a rotating detachable structure, and the backrest 230 is hinged to a rotating shaft 250 on the armrest 240.

[0073] The above-mentioned wheelchair is similar in shape and function to an ordinary wheelchair, but in order to be able to dock with the bed of this embodiment to transfer the user, the following changes have been made: the seat plate 220 and the entire wheelchair have been widened, and the backrest 230 is set to be detachable, which is mainly to enable the user to enter the seat plate 220 through the backrest 230 during docking and transfer; a seat plate roller 221 is added to the front and rear of the seat plate 220 to facilitate the user to move thereon.

[0074] Figure 6 This is a simplified structural diagram of the bed when used in conjunction with a wheelchair. When the bed is used in conjunction with the wheelchair to transfer the user, the backrest 230 of the wheelchair needs to be placed against the bed toward the rear of the bed surface, and the bed surface 20 and the seat plate 220 need to be aligned to form a passage, and then the backrest 230 needs to be removed.

[0075] The driving mechanism drives the conveyor belt 40 along Figure 6 The user moves in the direction of the middle arrow, and moves toward the wheelchair. The user's buttocks S2 pass through the second couch portion 22, the third couch portion 23 and the fourth couch portion 24 in sequence. When the user's buttocks are close to the seat plate roller 221 on the rear side of the wheelchair, the conveyor belt 40 is stopped and the second lifting device 32 is started to lift the fourth couch portion 24 to send the patient over the seat plate roller 221 on the rear side of the wheelchair to the seat plate 220. At the same time, the lying position is changed to a sitting position, and the driving mechanism stops driving the conveyor belt 40. At this time, the user still maintains a lying position with the upper body S1 lying on the fourth couch portion 24.

[0076] The fourth couch portion 24 is turned up from a horizontal state to an inclined state at the end of the bed surface, and the user is converted from a lying position to a sitting position, and sits on the wheelchair while maintaining the sitting position. Figure 7 shown.

[0077] Finally, the backrest 230 is installed and the wheelchair is pushed away, thus completing the transfer of the user and the change of body position during the transfer.

[0078] When the above-mentioned bed is transferring a patient, the conveyor belt 40 relies on static friction to drag the mattress 81 and the patient together. When the patient moves forward to the docked wheelchair, the mattress 81 bypasses the rear end of the bed surface and moves forward under the bed surface 20, and begins to separate from the conveyor belt 40 at the rear end of the bed surface. The movement path of the conveyor belt 40 under the bed surface 20 is located above the movement path of the mattress 81 under the bed surface 20.

[0079] When the wheelchair is used in combination with a bed and the user is transferred to the bed, the backrest 230 of the wheelchair needs to be placed against the bed toward the rear of the bed surface, and the bed surface 20 and the seat plate 220 need to be aligned to form a passage, and then the backrest 230 needs to be removed.

[0080] Someone else helps the user's upper body S1 to lean against the fourth couch 24 which is tilted in advance, and after the user's upper body S1 leans against the fourth couch 24, the fourth couch 24 is laid flat, and the user changes from a sitting position to a lying position. Figure 6 The user moves in the direction opposite to the arrow in the figure, driving the user to move away from the wheelchair until the upper body S1 of the user is located on the first couch portion 21, completing the transfer of the user from the wheelchair to the bed surface 20. After the user separates from the wheelchair, the wheelchair can be pushed away or placed in place for next use.

[0081] In other embodiments, any one of the first couch portion 21 and the third couch portion 23 or both of them may also be fixed couch portions, that is, the bed does not have the function of allowing the user to stand up or bend his legs.

[0082] When the user's body position is changed, the length of the conveyor belt 40 will not increase or decrease. The principle has been explained in the above description of the movement path of the conveyor belt 40, and can be further seen in Figure 8-9 .

[0083] like Figure 8-9 The figure shows a simplified schematic diagram of the structure of the bed surface 20 omitting the first couch portion 21 and the second couch portion 22. It can be seen that due to the presence of the reversing roller 26 and the tensioning roller 61, the conveyor belt 40 is attached to the top side and the bottom side of the fourth couch portion 24 respectively. When the rotating component 25a on the fourth couch portion 24 rotates, the length of the conveyor belt 40 on the top side and the bottom side of the fourth couch portion 24 will hardly change, and the total length of the conveyor belt 40 will not change.

[0084] Similarly, Figure 8 and Fig. 9 In the embodiment, the upper and lower surfaces of the third couch section 23 are also attached with conveyor belts 40, respectively. When the rotating member 25a on the third couch section 23 rotates, the lengths of the conveyor belts 40 on the upper and lower surfaces of the third couch section 23 will hardly change, and the total length of the conveyor belts 40 will not change. If the third couch section 23 is a fixed couch section, the length of the conveyor belt 40 on the fourth couch section 24 will not change.

[0085] When the rotating member 25a on the fourth couch portion 24 rotates, the length of the conveyor belt 40 will not change. However, with the use or thermal expansion and contraction of the four seasons, the original length of the conveyor belt 40 itself may change slightly. As a preferred solution, you can continue to refer to Figure 2 The bed also includes a slide rail 62, which is located below the third couch portion 23 and is substantially parallel to the third couch portion 23. The tensioning roller 61 is movably installed in the corresponding slide rail 62. For example, the position of the tensioning roller 61 in the slide rail 62 can be changed by a tensioning bolt 63. As the tensioning roller 61 moves in the slide rail 62, the conveyor belt 40 is tightened or relaxed.

[0086] Specifically, the slide rail 62 is a 130mm long 30X20 stainless steel rectangular material, and a 12mm wide 80mm long through slot is processed in the middle of the profile 10mm away from one end on the 30mm surface, and an M14 standard nut is welded at the other end, flush with the end surface and aligned with the through slot. Then, the 20mm side of the profile is attached to the frame of the thigh frame root (third couch portion 23) and welded, with one nut on each side of the third couch portion 23, corresponding to each other.

[0087] The two ends of the tensioning roller carrying the conveyor belt are inserted into the through grooves on both sides respectively, and pushed by two 120mm long M14 bolts on both sides to tension the conveyor belt until it can easily carry people.

[0088] The driving mechanism in the above embodiment can be Figure 2 As shown, it includes a motor 71 and a roller 72, the motor 71 drives the roller 72 to rotate, the conveyor belt 40 passes around the roller 72 and moves under the action of the static friction of the roller 72, or the driving mechanism includes a motor and a roller, radially extending ratchets are evenly spaced at both ends of the roller, and grooves or holes corresponding to the ratchets are evenly spaced on both sides of the conveyor belt 40. When the couch portion includes a plurality of rollers arranged side by side, the diameter of the roller in the second couch portion 22 located above the driving mechanism can be smaller than the diameter of the rollers in other couch portions. The advantage of such a design is that more space can be reserved for the driving mechanism.

[0089] The bed of this embodiment is not provided with a length adjustment mechanism, so that the structure of the entire bed is simpler; secondly, the bed is easy to operate. Compared with the traditional patient transfer device, the operator who controls the bed has less physical contact with the user of the bed, which can reduce the secondary damage to the user (such as a patient or an elderly person) during the process of carrying the user. In addition, a reversing roller is provided under the fourth couch portion of the bed, and a tensioning roller is provided under the third couch portion. The conveyor belt passing through the fourth couch portion passes through the gap and passes through the reversing roller and the tensioning roller to form a detour structure under the bed surface. The detour structure makes the length of the conveyor belt attached to the upper and lower surfaces of the third couch portion and / or the fourth couch portion almost unchanged during the rotation process, so that the length of the entire conveyor belt does not change. Further, the conveyor belt will not slide and rub against other components or itself during the detour, thereby avoiding the generation of static electricity.

[0090] The above specific examples are used to illustrate the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the art, according to the concept of the present invention, some simple deductions, modifications or substitutions can be made.

Claims

1. A bed, characterized in that include: a bed frame for providing support for at least part of the bed; A bed surface, which is used to provide an area for a user to lie down, has a bed surface head portion and a bed surface tail portion, and the bed surface includes at least two lying portions supported side by side on a bed frame; The couch portion has a first end facing the head or tail of the bed surface and a second end opposite to the first end. The couch portion includes a fixed couch portion and a movable couch portion. The first end of the movable couch portion is provided with a rotating component, and the rotating component is rotatably mounted on the bed frame, so that the movable couch portion can be turned up from a horizontal state to a tilted state with the rotating component as a rotating axis under the action of an external force toward the head or tail of the bed surface; The fixed couch portion includes a second couch portion, the second couch portion is located in the area where the buttocks of the user are located after lying on the bed surface, and the second couch portion is provided with a first gap that passes through the upper surface and the lower surface of the bed surface; The movable couch portion includes a first couch portion, a third couch portion and a fourth couch portion; The first couch portion is located in the area where the upper body of the user lies on the bed surface, the third couch portion is located in the area where the thighs of the user lie on the bed surface, and the fourth couch portion is located in the area where the calves of the user lie on the bed surface; The second end of the first couch portion faces the head of the bed surface, the second end of the third couch portion and the second end of the fourth couch portion face each other and there is a second gap between the two that passes through the upper and lower surfaces of the bed surface, the first end of the third couch portion faces the head of the bed surface, and the first end of the fourth couch portion is close to the tail of the bed surface; a reversing roller, which is rotatably fixed on the bed frame and is located below the fourth couch portion and close to the first end of the fourth couch portion; A tensioning roller, which is rotatably arranged, and the tensioning roller is located below the third couch portion and close to the third couch portion; A driving mechanism, used for providing power, wherein the driving mechanism is fixed on the bed frame and located under the bed surface; A guide mechanism, comprising at least a first guide roller and a second guide roller, wherein the first guide roller and the second guide roller are rotatably fixed on the bed frame and are located between the tail end of the bed surface and the head end of the bed surface in sequence, and the first guide roller is close to the tail end of the bed surface; A conveyor belt, the conveyor belt is coupled to the power output end of the driving mechanism, the conveyor belt passes through the first gap from the power output end to the upper surface of the bed surface, and then extends to the head and tail of the bed surface and passes from the head and tail of the bed surface to the bottom of the bed surface, the conveyor belt passing from the tail of the bed surface to the bottom of the bed surface is sequentially wound around the first guide roller and the second guide roller, and extends to the head of the bed surface; The portion of the conveyor belt located in the second gap passes through the second gap to below the bed surface, and the portion passes through the reversing roller and the tensioning roller in sequence to form a detour structure, the detour structure and the driving mechanism of the conveyor belt are respectively located between the portion of the conveyor belt between the first guide roller and the second guide roller and the bed surface, the portion of the conveyor belt located above the bed surface is attached to the bed surface, the portion of the conveyor belt located between the fourth couch portion and the reversing roller is attached to the fourth couch portion, and the portion of the conveyor belt located between the third couch portion and the tensioning roller is attached to the third couch portion; The conveyor belt can perform bidirectional reciprocating motion under the action of a driving mechanism; the driving mechanism includes a motor and a roller, the motor drives the roller to rotate, radially extending ratchets are evenly spaced at both ends of the roller, and grooves or holes corresponding to the ratchets are evenly spaced on both sides of the conveyor belt; or the driving mechanism includes a motor and a roller, the motor drives the roller to rotate, the conveyor belt passes around the roller, and moves under the action of the static friction of the roller; The guide mechanism further includes at least two third guide rollers, the third guide rollers are fixed on the bed frame and located under the bed surface, the first guide rollers and the third guide rollers are arranged in sequence and spaced apart, and the connecting lines between the first guide roller and the adjacent third guide rollers and the bed surface form a receiving space, and the portion of the conveyor belt that passes under the bed surface is located in the receiving space; The bed also includes: Mattress pads; An elastic belt, one end of the elastic belt is connected to one end of the mattress, and the other end of the elastic belt is connected to the other end of the mattress, so that the elastic belt and the mattress form an annular belt, the bed surface and the conveyor belt are respectively located inside the annular belt, and the portion of the annular belt located below the bed surface is wound around the first guide roller and the third guide roller, so that the portion of the elastic belt located above the bed surface exerts a force on the conveyor belt and moves with the movement of the conveyor belt.

2. The bed according to claim 1, characterized in that: Also includes: The lifting mechanism is located below the bed surface, and the lifting mechanism applies a force to the movable couch portion, so that the movable couch portion is turned up from a horizontal state to a tilted state at the head or tail of the bed surface with the rotating component as the rotating axis under the action of external force.

3. The bed according to claim 1, characterized in that: Also includes: A slide rail corresponding to the tensioning roller, the slide rail being fixed on the third couch portion and located below the third couch portion, the slide rail being substantially parallel to the third couch portion; The tensioning roller is movably installed in the slide rail, and as the tensioning roller moves in the slide rail, the conveyor belt becomes more tensioned or relaxed.

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