Multifunctional displacement child-mother bed

Abstract

The invention relates to a multifunctional displacement child-mother bed which comprises a child bed and a mother bed, the mother bed comprises a mother bed board and a mother bed frame, the child bed comprises a child bed board and a child bed frame, and a moving system is arranged at the bottom of the child bed frame. A guide mechanism, a secondary fast building mechanism and a primary bed lifting mechanism are arranged on the primary bed frame, and a secondary bed lifting mechanism, a guided mechanism, a primary fast building mechanism and a fast folding handrail are arranged on the secondary bed frame. When emergency bed closing is needed, bed closing obstacles can be quickly removed, meanwhile, the child bed frame is accurately and quickly guided to reach the splicing position, quick locking of the child bed and the mother bed is completed, and the bed closing time is shorter than half a minute; when emergency bed separation is needed, unlocking can be achieved with light force, meanwhile, signal connection between the child bed and the mother bed is disconnected, the child bed and the mother bed can be rapidly separated in one step, the child bed can independently transfer a patient, and the bed separation time is shorter than ten seconds. When the movable bed is used in a hospital, the movable bed does not need to be called from other places, and the transfer efficiency of the movable bed is effectively improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of transfer beds, and particularly relates to a multifunctional transfer mother-and-son bed. Background Art

[0002] When treating patients in a hospital, it is usually necessary to transfer the patient's position to cooperate with the use of medical instruments, such as transferring the patient from the CT machine in the CT room back to the hospital bed, or from the hospital bed to the operating table. Conventional hospital beds in the ward cannot be moved, so a specially designed transfer bed is required for transfer. The transfer bed occupies a large area, and in order to move freely in the ward, ordinary transfer beds have high requirements for the space of the ward.

[0003] The prior art CN104127289B discloses a split-type robotic nursing bed with a rehabilitation training function. The split-type robotic nursing bed includes a nursing bed body and an electric wheelchair. The electric wheelchair can be combinably arranged in the nursing bed body and can be split out from the nursing bed body. The nursing bed body includes a bed frame, a bed backrest, a bed seat board, a bed thigh board, and a bed calf board; an electric wheelchair slot is arranged on the other side of the bed frame. The electric wheelchair structurally includes a seat surface, a wheelchair load-bearing seat, a moving base, armrests, and a control mechanism. The wheelchair backrest, wheelchair seat board, wheelchair thigh board, wheelchair calf board, and wheelchair footrest are sequentially hinged. An electric push rod for adjusting the attitude of the seat surface is arranged on the load-bearing seat, and a control mechanism is arranged on the armrest on one side of the wheelchair backrest. The present invention is applicable to bedridden disabled or semi-disabled persons with limb function disorders, as well as the elderly with weakened physical functions who have difficulty in taking care of themselves, and can meet their daily nursing needs such as turning over, attitude adjustment, and bed-chair conversion, and can also perform assisted rehabilitation training.

[0004] However, this prior art is only applicable to the elderly without acute diseases for rehabilitation training, usually there are no sudden abnormalities, and the wheelchair is not combined with the nursing bed body, still occupying a large area. Relatively speaking, emergencies are more likely to occur in hospitals, and it is necessary to quickly transfer the patients on the hospital bed to the operating room or perform emergency treatment on the spot. At this time, there is no time to adjust the armrests step by step and disassemble the connection components (usually, it takes more than 3 minutes to disassemble the existing split mother-and-son bed until the sub-bed can be moved independently). Therefore, at present, most hospitals still choose to mobilize transfer beds to transfer patients even when equipped with mother-and-son beds. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a multifunctional transfer mother-and-son bed, which can be used in multiple ways, and can be quickly assembled or disassembled to quickly transfer patients in case of emergencies.

[0006] The technical solution adopted by the present invention to solve its technical problems is: to provide a multi-functional shiftable double-decker bed, including a child bed and a mother bed. The mother bed includes a mother bed board and a mother bed frame. The child bed includes a child bed board and a child bed frame. A moving system is provided at the bottom of the child bed frame. On the mother bed frame, there are: a guiding mechanism for guiding the child bed frame to accurately dock on one side of the mother bed frame, so that the child bed board and the mother bed board are spliced into a whole bed; a secondary quick-assembly mechanism for quickly locking or disengaging the mother bed frame and the child bed frame; a mother bed lifting mechanism for adjusting the height of the mother bed board. On the child bed frame, there are: a child bed lifting mechanism for adjusting the height of the child bed board; a guided mechanism that matches the guiding mechanism; a main quick-assembly mechanism that matches the secondary quick-assembly mechanism. The child bed lifting mechanism is signal-connected to the secondary quick-assembly mechanism through the main quick-assembly mechanism. When the main quick-assembly mechanism and the secondary quick-assembly mechanism are linked, one of the child bed lifting mechanism and the mother bed lifting mechanism is set to a slave mode; a quick-retractable armrest is provided on the side of the child bed frame facing the mother bed frame. The quick-retractable armrest is folded and stored along the direction parallel to the length of the child bed board. The upper edge of the quick-retractable armrest is lower than the upper surface of the child bed board in the retracted state.

[0007] Preferably, a moving system is provided at the bottom of the mother bed frame. The moving systems of the child bed and the mother bed include universal wheels provided at the four corners of the bottom of their respective bed frames.

[0008] Preferably, the moving system includes self-propelled casters provided at the four corners of the bottom of the child bed frame. A control system and a power module are provided inside the child bed frame. A path-finding radar is provided at the front end of the child bed frame. The power module is electrically connected to the control system, the self-propelled casters, and the path-finding radar. The control system is signal-connected to the path-finding radar and the self-propelled casters.

[0009] Preferably, the top view shape of the mother bed frame is "concave" shaped. The concave part of the "concave" shape is provided in the width direction of the mother bed. The mother bed board is provided above the bottom edge of the "concave" shape. The top view shape of the child bed frame is "convex" shaped that matches the mother bed frame. A guided mechanism that matches the guiding mechanism and a secondary quick-assembly mechanism that matches the main quick-assembly mechanism are provided at the protruding end of the child bed frame.

[0010] Preferably, the secondary quick-assembly mechanism includes a docking rotating shaft, a hook arm, and a hooking roller provided at the bottom edge of the recess. The docking rotating shaft is rotatably installed on the main bed frame. The docking rotating shaft is fixedly docked with one end of the hook arm. A hooking roller is rotatably installed at the other end of the hook arm. The main quick-assembly structure includes a hook foot structure provided on the sub-bed frame and docked with the hooking roller. A torsion spring structure is installed between the docking rotating shaft and the hook arm. One end of the hook arm installed with the hooking roller is always tilted downward under the action of the torsion spring structure. The main quick-assembly structure further includes a male plug assembly provided at the bottom edge of the recess. The secondary quick-assembly structure further includes a female plug assembly that matches the male plug assembly.

[0011] Preferably, the guiding mechanism includes guiding rollers provided on both sides of the recess of the main bed frame. The guided mechanism includes rigid sliding plates provided on both sides of the protruding part of the sub-bed frame. The positions of the rigid sliding plates match those of the guiding rollers.

[0012] Preferably, the two ends in the length direction of the main bed board are the head and the tail of the bed. The guiding mechanism further includes anti-collision beams provided at the head and the tail of the main bed frame. Guiding rollers are provided at both ends of the anti-collision beams.

[0013] Preferably, the sub-bed board is a segmented bed board, including a back board, a hip board, a thigh board, and a calf board sequentially connected by rotating connectors. An elevating system for controlling the height of the segmented chair surface and an angle adjusting system for controlling the angles between the back board, the hip board, the thigh board, and the calf board are further provided on the sub-bed frame.

[0014] Preferably, the main bed board is the same as the sub-bed board, both including a back board, a hip board, a thigh board, and a calf board sequentially connected by rotating connectors. A support piece is provided between the main bed board and the sub-bed board. The quick-retractable armrest is folded and stored towards the head of the bed along the length direction parallel to the sub-bed board. The distance between the support piece on the back board and the hip board is greater than the armrest length of the quick-retractable armrest.

[0015] Preferably, guardrails are provided at the foot of the sub-bed frame and on the bed side away from the main-bed frame, and guardrails are provided at the head, foot, and the bed side away from the sub-bed frame of the main-bed frame. The quick-retractable armrest includes: an armrest bracket disposed on the side of the sub-bed frame facing the main-bed frame; a connecting rod provided in the middle of the armrest bracket, with first armrest support rods hinged at both ends of the connecting rod, and a connecting pin fixedly provided on the outer side wall of the connecting rod; a second armrest support rod erected on the tops of the two first armrest support rods, and a connecting block is detachably provided on the second armrest support rod directly above the first armrest support rod, and the lower ends of the connecting block are respectively hinged to the first armrest support rods; a slide plate movably disposed outside the connecting rod, one end of the slide plate is connected to the first armrest support rod, a guiding groove is provided on the slide plate, and the connecting pin extends into the guiding groove and is in sliding fit with the guiding groove.

[0016] The beneficial effects are as follows: When an emergency bed combination is required, the present invention quickly removes the bed combination obstacle through the quick-retractable armrest, and at the same time accurately and quickly guides the sub-bed frame to the splicing position through the guiding structure provided on the main-bed frame. After reaching the splicing position, the main quick-latching mechanism and the secondary quick-latching mechanism complete the quick locking of the sub-bed and the main-bed, and at the same time ensure the accurate latching of the male plug assembly and the female plug assembly to realize the signal connection between the sub-bed and the main-bed. The bed combination time is less than half a minute; when an emergency bed separation is required, the main quick-latching mechanism and the secondary quick-latching mechanism can be unlocked with only a small force and at the same time disconnect the signal connection between the sub-bed and the main-bed, realizing the quick separation of the mother and child beds in one step and the function of transporting patients separately with the sub-bed. The bed separation time is less than ten seconds.

[0017] When the present invention is used in the hospital, there is no need to call a transfer bed from elsewhere, effectively improving the transfer efficiency of the transfer bed. When the patient is normal, the combined bed size of the mother and child beds is large, and when an abnormal transfer occurs, the width of the sub-bed is narrow, saving ward space in the ward; during transportation, it can pass through crowded corridors that cannot be passed through by the width of ordinary hospital beds. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional view of the combined bed state of Embodiment 1 of a multifunctional transfer mother and child bed.

[0019] Figure 2 It is a bottom view of the combined bed state of Embodiment 1 of a multifunctional transfer mother and child bed.

[0020] Figure 3 It is a three-dimensional view of the combined bed state of Embodiment 2 of a multifunctional transfer mother and child bed.

[0021] Figure 4 It is a top view of the combined bed state of Embodiment 2 of a multifunctional transfer mother and child bed.

[0022] Figure 5It is a three-dimensional view of the split-bed state of an embodiment of a multi-functional shiftable mother-and-child bed.

[0023] Figure 6 It is Figure 1 an enlarged three-dimensional view of the secondary quick-assembly mechanism of the mother bed in

[0024] Figure 7 It is Figure 6 a schematic diagram of the lap joint between the secondary quick-assembly mechanism and the primary quick-assembly mechanism in

[0025] Figure 8 It is Figure 3 an enlarged front view of the quickly retractable armrest in

[0026] Among them, 1 - mother bed frame; 101 - guiding mechanism; 1011 - guiding roller; 1012 - anti-collision beam; 102 - secondary quick-assembly mechanism; 1021 - docking rotating shaft; 1022 - hook arm; 1023 - hook connecting roller; 1024 - female plug assembly; 1025 - clamping groove; 1026 - limiting block; 103 - mother bed lifting mechanism; 2 - mother bed board; 3 - child bed frame; 301 - guided mechanism; 3011 - rigid sliding plate; 302 - primary quick-assembly mechanism; 3021 - hook foot structure; 3022 - male plug assembly; 4 - child bed board; 401 - back board; 402 - hip board; 403 - thigh board; 404 - calf board; 405 - support piece; 5 - moving system; 501 - universal wheel; 502 - power module; 503 - independent foot brake; 6 - quickly retractable armrest; 601 - armrest bracket; 602 - connecting rod; 603 - first armrest support rod; 604 - connecting pin; 605 - second armrest support rod; 606 - connecting block; 607 - sliding plate; 608 - guiding groove; 609 - plug; 7 - lifting system; 8 - angle adjustment system. The same reference numerals in each figure represent the same component. Specific embodiments

[0027] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of this application.

[0028] As Figure 1 - Figure 2As shown in the figure, the present invention provides a multi-functional shiftable mother-and-child bed. The clamping groove 1025 receives the armrest 6. The sub-bed lifting mechanism is used to adjust the height of the sub-bed board 4. The guided mechanism 301 is matched with the guiding mechanism 101. The main quick-connection mechanism 302 is matched with the secondary quick-connection mechanism 102. The sub-bed lifting mechanism is signal-connected to the secondary quick-connection mechanism 102 through the main quick-connection mechanism 302. When the main quick-connection mechanism 302 and the secondary quick-connection mechanism 102 are connected, one of the sub-bed lifting mechanism and the mother-bed lifting mechanism 103 is set to the driven mode. The quick-retractable armrest 6 is arranged on the side of the sub-bed frame 3 facing the mother-bed frame 1. The quick-retractable armrest 6 is folded and stored along the direction parallel to the length of the sub-bed board 4. The upper edge of the quick-retractable armrest 6 is lower than the upper surface of the sub-bed board 4 in the retracted state.

[0029] In a specific embodiment, a moving system 5 is provided at the bottom of the mother-bed frame 1. The moving systems 5 of the sub-bed and the mother-bed include universal wheels 501 provided at the four corners of the bottom of their respective bed frames. An independent foot brake 503 is provided on one side of each set of universal wheels 501 for quick locking when in place. The specific structure of the universal wheel 501 with a foot brake is a mature prior art and not the creative point of this application. In the embodiments of the present invention, commercially available tente universal casters are used, and the specifications can be selected according to the bed size and load-bearing target. In addition, as disclosed in the prior art CN208290849U, a universal wheel 501 with a foot brake includes a mounting seat, a rotating shaft, and a moving wheel. The mounting seat is in the shape of a hollow cylinder, and a bearing is embedded in the mounting seat. One end of the bearing is movably connected to one end of the rotating shaft, and the other end of the rotating shaft passes through the mounting seat and is provided with a connecting member. A roller is provided between the connecting member and the moving wheel, and the connecting member and the moving wheel are movably connected through the roller. A brush is provided at the inner wall position of the bottom end of the mounting seat. A plurality of foot brakes are provided on the outer wall of the mounting seat. The foot brake includes a pedal and a brake plate. The present invention is applicable to various industries, is flexible and convenient to use, can save manpower, the top of the rotating shaft rotates flexibly through the bearing, the brush provided on the inner wall of the rotating shaft prevents dust from entering the bearing position and affecting the use, the moving wheel provided at the bottom of the rotating shaft is responsible for rolling, and the foot brake provided on the outside of the mounting seat realizes the timely braking of the universal wheel 501. Those skilled in the art can also adopt other similar designs, which will not be elaborated here.

[0030] In other embodiments, the mobile system 5 replaces the universal wheels 501 with self-propelled casters. A control system and a power supply module 502 are provided inside the sub-bed frame 3. A path detection radar is provided at the front end of the sub-bed frame 3. The power supply module 502 is electrically connected to the control system, the self-propelled casters, and the path detection radar. The control system is in signal connection with the path detection radar, the self-propelled casters, the sub-bed lifting mechanism, and the main bed lifting mechanism 103. Among them, a drive motor and a power supply for driving the universal wheels 501 are provided inside the base. The specific structure of the self-propelled casters is a mature prior art and not the creative point of this application. For example, the prior art CN217374021U discloses an electric universal caster, which includes a fixed bracket, a turntable rotatably connected to the fixed bracket, a roller bracket fixedly connected below the turntable, and rollers provided on the roller bracket; a first drive motor and a second drive motor are installed on the fixed bracket; the first drive motor drives the turntable to rotate on the fixed bracket through a first transmission mechanism; the second drive motor drives the rollers to rotate through a second transmission mechanism. The electric universal caster provided by the prior art has a simple structure. The first drive motor drives the turntable to rotate on the fixed bracket through the first transmission mechanism, so that the forward direction and angle of the rollers can be adjusted; the second drive motor drives the rollers to rotate through the second transmission mechanism; thus, the caster can move automatically to meet the needs of people to transport heavy objects, thereby increasing work efficiency. Those skilled in the art can also adopt other similar designs, which will not be elaborated here.

[0031] In a specific embodiment as Figure 5 shown, the top view shape of the main bed frame 1 is "concave" shaped, and the concave part of the "concave" shape is located in the width direction of the main bed. The main bed board 2 is arranged above the bottom edge of the "concave" shape; correspondingly, in a specific embodiment as Figure 5 shown, the top view shape of the sub-bed frame 3 is "convex" shaped to match the main bed frame 1. A guided mechanism 301 matching the guiding mechanism 101 and a secondary quick-connecting mechanism 102 matching the main quick-connecting mechanism 302 are provided at the protruding end of the sub-bed frame 3.

[0032] In a specific embodiment as Figure 6 、 7In the specific embodiment shown, the secondary quick-connection mechanism 102 includes a docking rotating shaft 1021 provided at the bottom edge of the recess, a hook arm 1022, and a hook connecting roller 1023. A limiting block 1026 abutting against the sub-bed frame 3 is further provided below the quick-connection mechanism 102. The docking rotating shaft 1021 is rotatably installed on the main bed frame 1. The docking rotating shaft 1021 is fixedly docked with one end of the hook arm 1022. A hook connecting roller 1023 is rotatably installed at the other end of the hook arm 1022. The main quick-connection structure includes a hook foot structure 3021 provided on the sub-bed frame 3 and docked with the hook connecting roller 1023. A torsion spring structure is installed between the docking rotating shaft 1021 and the hook arm 1022. One end of the hook arm 1022 where the hook connecting roller 1023 is installed is always inclined downward under the action of the torsion spring structure. The mating part of the hook foot structure 3021 and the hook connecting roller 1023 is a rounded corner, actually forming an easy-to-disengage unhooking angle, and it can be disengaged only by overcoming the resistance of the torsion spring structure. The main quick-connection structure further includes a male plug assembly 3022 provided at the bottom edge of the recess. The secondary quick-connection structure further includes a female plug assembly 1024 mating with the male plug assembly 3022. Guide rollers 1011 are also provided on the outer side wall of the female plug assembly 1024. A guiding portion with an inclined surface is provided on the corresponding male plug assembly 3022, and the guiding portion mates with the guide rollers 1011 of the female plug assembly 1024.

[0033] The guiding mechanism 101 includes guide rollers 1011 provided on both sides of the recess of the main bed frame 1. The guided mechanism 301 includes rigid sliding plates 3011 provided on both sides of the protruding portion of the sub-bed frame 3, and the rigid sliding plates 3011 are in a matching position with the guide rollers 1011.

[0034] Both ends in the length direction of the main bed board 2 are the head and the tail of the bed. The guiding mechanism 101 further includes anti-collision beams 1012 provided at the head and the tail of the main bed frame 1, and guide rollers 1011 are provided at both ends of the anti-collision beams 1012. When the user pushes the sub-bed to be inserted into the main bed, as long as the general direction is correct, the sub-bed can be guided into the main bed by the guide rollers 1011 on the anti-collision beams 1012, and then the rigid sliding plates 3011 are docked with the guide rollers 1011 in the recess, and it can be quickly inserted in place.

[0035] When the sub-bed and the main bed are docked, push the sub-bed towards the main bed. The guiding part of the male plug assembly 3022 contacts the guiding roller 1011 of the female plug assembly 1024. The inclined surface design of the guiding part enables the male plug assembly 3022 to automatically align with the clamping groove of the female plug assembly 1024. The guiding roller 1011 rolls during the docking process, reducing friction and collision to ensure a smooth docking process. Continue to move the sub-bed, and the hook foot structure 3021 on the sub-bed docks with the docking rotating shaft 1021 on the main bed until the sub-bed frame 3 abuts against the limit block 1026 and the sub-bed stops moving. When the male plug assembly 3022 and the female plug assembly 1024 are fully docked, the current probe on the male plug assembly 3022 contacts the metal contact of the female plug assembly 1024. The control system circuit board in the sub-bed frame 3 and the control system circuit board in the main bed frame 1 are electrically signal-connected through the current probe, and the integrated control function of the whole bed is activated. According to the situation, one of the sub-bed lifting mechanism and the main bed lifting mechanism 103 is set to the driven mode. When the sub-bed and the main bed are separated, due to the hook foot structure 3021 being provided with a decoupling angle, only a relatively small force is required to unlock.

[0036] The main quick-docking mechanism 302, the secondary quick-docking mechanism 102, the guiding mechanism 101, and the guided mechanism 301 configured in the present invention have the advantages of simple operation, reliable connection, anti-collision, etc. They are suitable for the circuit connection between the sub-bed and the main bed. The device structure is modular, and each component is easy to disassemble and replace, facilitating daily maintenance and repair, reducing the maintenance cost. Through the guidance of the guiding roller 1011, the connection is convenient, and the design of the limit block 1026 avoids collision.

[0037] In a specific embodiment such as Figure 3 , 4 , 5, the sub-bed board 4 is a segmented board, including a back board 401, a hip board 402, a thigh board 403, and a calf board 404 that are sequentially connected by rotating connectors. The sub-bed frame 3 is also provided with a lifting system 7 for controlling the height of the segmented seat surface and an angle adjustment system 8 for controlling the angles between the back board 401, the hip board 402, the thigh board 403, and the calf board 404.

[0038] The main bed board 2 is the same as the sub-bed board 4, both including a back board 401, a hip board 402, a thigh board 403, and a calf board 404 that are sequentially connected by rotating connectors. A support piece 405 is provided between the main bed board 2 and the sub-bed board 4. The quick-retractable armrest 6 is folded and stored towards the head of the bed along the length direction parallel to the sub-bed board 4. The distance between the support piece 405 on the back board 401 and the hip board 402 is greater than the armrest length of the quick-retractable armrest 6 to prevent the quick-retractable armrest 6 from being blocked by the support piece 405 when it is retracted.

[0039] Among them, the rotating connecting member is one or more of a hinge, a bearing, and a universal joint. The angle adjustment system 8 includes a plurality of electric telescopic rods. The hip plate 402 is fixed. By providing a segmented bed board and raising each bed board except the hip plate 402 respectively through the angle adjustment system 8 to control the included angle, the transfer chair bed can be quickly switched between a wheelchair and a flat bed, meeting the switching requirements of the sitting and lying postures of general patients. The lifting system 7 includes a nested telescopic rod. The lifting system 7 can control the height of the multi-functional transfer double bed, and the adjustable height range is about 0-100 cm, so that the segmented seat surface 10 is raised to the same height as the in-hospital medical facilities or hospital beds, or to meet other sitting and lying body position requirements (such as dining, reading, rehabilitation training, etc.). The lifting system 7 and the angle adjustment system 8 do not interfere with each other. When in the wheelchair state, when the lifting system 7 is lifted or lowered, the angle adjustment system 8 is controlled to follow by the support piece 405 to keep the wheelchair at a preset angle unchanged.

[0040] As Figure 3 shown, guardrails are provided at the bed tail of the sub-bed frame 3 and the bed side far from the mother-bed frame 1, and guardrails are provided at the head, bed tail of the mother-bed frame 1 and the bed side far from the sub-bed frame 3. In a case such as Figure 8In the specific embodiment shown, the quick-retractable armrest 6 includes an armrest bracket 601, a connecting rod 602, a second armrest support rod 605, a first armrest support rod 603, and a sliding plate 607. The armrest bracket 601 is arranged on one side of the sub-bed frame 3 facing the mother-bed frame 1; the connecting rod 602 is arranged in the middle of the armrest bracket 601, and both ends of the connecting rod 602 are hinged with a first armrest support rod 603, and a connecting pin 604 is fixedly arranged on the outer side wall of the connecting rod 602; the second armrest support rod 605 is erected on the tops of the two first armrest support rods 603, the second armrest support rod 605 is a hollow steel pipe, and plug heads 609 are arranged at both ends. A connecting block 606 is detachably arranged on the second armrest support rod 605 directly above the first armrest support rod 603, and the lower ends of the connecting block 606 are respectively hinged with the first armrest support rod 603; the sliding plate 607 is movably arranged outside the connecting rod 602, one end of the sliding plate 607 is connected with the first armrest support rod 603, a guiding groove 608 is arranged on the sliding plate 607, and the connecting pin 604 extends into the guiding groove 608 and is in sliding fit with the guiding groove 608. The guiding groove 608 includes a clamping groove arranged on the side wall of the sliding plate 607. When the connecting pin 604 is located in the clamping groove, the armrest structure is locked. A first inclined sliding groove is arranged at the bottom of the clamping groove, a smooth groove is arranged on one side of the first inclined sliding groove, a second inclined sliding groove is arranged on one side of the smooth groove, and a third inclined sliding groove is arranged on one side of the second inclined sliding groove to realize the opening and locking of the armrest structure. When the armrest needs to be flattened, the user gently lifts the sliding plate 607 to make the connecting pin 604 located in the first inclined sliding groove, and the user holds the second armrest support rod 605 and moves it downward. The connecting pin 604 slides in the guiding groove 608 until the second armrest support rod 605 is in a flattened state. The entire flattening action takes less than 2 s. By retracting the quick-retractable armrest 6, a transfer passage is quickly opened up, facilitating first aid personnel to perform cardiopulmonary resuscitation (CPR) or quickly transfer patients, ensuring unobstructed emergency rescue.

[0041] When an emergency bed combination is required in the present invention, the quick-retractable armrest 6 quickly removes the bed combination obstacle, and at the same time, the guiding structure arranged on the mother-bed frame 1 accurately and quickly guides the sub-bed frame 3 to the splicing position. After reaching the splicing position, the main quick-latching mechanism 302 and the secondary quick-latching mechanism 102 complete the quick locking of the sub-bed and the mother-bed, and at the same time ensure that the male plug assembly 3022 and the female plug assembly 1024 are accurately lapped to realize the signal connection between the sub-bed and the mother-bed. The bed combination time is less than half a minute; when an emergency bed separation is required, the main quick-latching mechanism 302 and the secondary quick-latching mechanism 102 can be unlocked with only a relatively small force and at the same time disconnect the signal connection between the sub-bed and the mother-bed, realizing the quick separation of the mother-bed and the sub-bed in one step and the function of the sub-bed to transport patients alone. The bed separation time is less than ten seconds.

Claims

1. A multifunctional shiftable double-decker bed, comprising a lower bed and an upper bed. The upper bed includes an upper bed board and an upper bed frame, and the lower bed includes a lower bed board and a lower bed frame. A moving system is provided at the bottom of the lower bed frame, and it is characterized in that The master bed frame is provided with: A guiding mechanism for guiding the sub - bed frame to accurately dock on one side of the master bed frame, so that the sub - bed board and the master bed board are spliced into a complete bed; A secondary quick - connection mechanism for quickly locking or disengaging the master bed frame and the sub - bed frame; A master bed lifting mechanism for adjusting the height of the master bed board; The sub - bed frame is provided with: A sub - bed lifting mechanism for adjusting the height of the sub - bed board; A guided mechanism that matches the guiding mechanism; A main quick - connection mechanism that matches the secondary quick - connection mechanism. The sub - bed lifting mechanism is signal - connected to the secondary quick - connection mechanism through the main quick - connection mechanism. After the main quick - connection mechanism and the secondary quick - connection mechanism are linked, one of the sub - bed lifting mechanism and the master bed lifting mechanism is set to a driven mode; A quick - retractable armrest is arranged on the side of the sub - bed frame facing the master bed frame. The quick - retractable armrest is folded and stored along the direction parallel to the length of the sub - bed board. The upper edge of the quick - retractable armrest is lower than the upper surface of the sub - bed board in the retracted state.

2. The multifunctional shiftable double-decker bed according to claim 1, wherein A moving system is arranged at the bottom of the master bed frame. The moving systems of the sub - bed and the master bed include universal wheels arranged at the four corners of the bottom of their respective bed frames.

3. A multifunctional shiftable mother-and-child bed according to claim 1, wherein, The moving system includes self - propelled casters arranged at the four corners of the bottom of the sub - bed frame. A control system and a power module are arranged inside the sub - bed frame. A path - detecting radar is arranged at the front end of the sub - bed frame. The power module is electrically connected to the control system, the self - propelled casters, and the path - detecting radar. The control system is signal - connected to the path - detecting radar and the self - propelled casters.

4. A multifunctional shiftable mother-and-child bed according to claim 1, wherein The top - view shape of the master bed frame is "concave" - shaped. The concave part of the "concave" shape is arranged in the width direction of the master bed. The master bed board is arranged above the bottom edge of the "concave" shape; The top - view shape of the sub - bed frame is "convex" - shaped that matches the master bed frame. The protruding end of the sub - bed frame is provided with a guided mechanism that matches the guiding mechanism and a secondary quick - connection mechanism that matches the main quick - connection mechanism.

5. A multifunctional shiftable mother-and-child bed according to claim 4, wherein, The secondary quick - connection mechanism includes a docking rotating shaft, a hook arm, and a hook - connecting roller arranged at the bottom edge of the concave part. The docking rotating shaft is rotatably installed on the master bed frame. The docking rotating shaft is fixedly docked with one end of the hook arm. A hook - connecting roller is rotatably installed at the other end of the hook arm. The main quick - connection structure includes a hook - foot structure arranged on the sub - bed frame for docking with the hook - connecting roller. A torsion - spring structure is installed between the docking rotating shaft and the hook arm. One end of the hook arm installed with the hook - connecting roller is always tilted downward under the action of the torsion - spring structure. The main quick - connection structure also includes a male plug component arranged at the bottom edge of the concave part. The secondary quick - connection structure also includes a female plug component that matches the male plug component.

6. The multifunctional shiftable double-decker bed according to claim 4, wherein The guiding mechanism includes guiding rollers arranged on both sides of the concave part of the master bed frame; the guided mechanism includes rigid sliding plates arranged on both sides of the protruding part of the sub - bed frame. The positions of the rigid sliding plates match those of the guiding rollers.

7. A multifunctional shiftable double-decker bed according to claim 6, wherein, Both ends of the master bed board in the length direction are the head and the tail of the bed. The guiding mechanism also includes anti - collision beams arranged at the head and the tail of the master bed frame. Guiding rollers are arranged at both ends of the anti - collision beams.

8. A multifunctional shiftable mother-and-child bed according to claim 1, characterized in that, The sub-bed board is a segmented board, including a backrest, a hip board, a thigh board and a calf board that are sequentially connected by rotating connectors. An elevating system for controlling the height of the segmented seat surface and an angle adjustment system for controlling the angles between the backrest, the hip board, the thigh board and the calf board are also provided on the sub-bed frame.

9. A multifunctional shiftable double-decker bed according to claim 8, wherein, The main-bed board is the same as the sub-bed board, both including a backrest, a hip board, a thigh board and a calf board that are sequentially connected by rotating connectors. A support piece is provided between the main-bed board and the sub-bed board. The quick-retractable armrest is folded and stored towards the head of the bed along the length direction parallel to the sub-bed board. The distance between the support piece on the backrest and the hip board is greater than the armrest length of the quick-retractable armrest.

10. A multifunctional shiftable mother-and-child bed according to claim 1, characterized in that, Guardrails are provided at the foot of the sub-bed frame and on the side of the bed away from the main-bed frame. Guardrails are provided at the head, foot and on the side of the bed away from the sub-bed frame of the main-bed frame. The quick-retractable armrest includes: An armrest bracket, which is arranged on the side of the sub-bed frame facing the main-bed frame; A connecting rod, which is arranged in the middle of the armrest bracket. First armrest support rods are hinged at both ends of the connecting rod. A connecting pin is fixedly arranged on the outer side wall of the connecting rod. A second armrest support rod, which is erected on the tops of the two first armrest support rods. A connecting block is detachably arranged on the second armrest support rod directly above the first armrest support rod. The lower ends of the connecting block are respectively hinged to the first armrest support rods. A sliding plate, which is movably arranged outside the connecting rod. One end of the sliding plate is connected to the first armrest support rod. A guiding groove is arranged on the sliding plate. The connecting pin extends into the guiding groove and is in sliding fit with the guiding groove.

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