Multi-attitude transform wheelchair bed

Abstract

The application discloses a multi-posture conversion wheelchair bed, which comprises a posture conversion device, a frame, a supporting device, a moving device and a base; the frame is fixed on the base; the moving device is used for realizing movement in any direction; the posture conversion device comprises a rotating frame body, a seat plate, a back plate, a back plate slide rail, staggered connecting rods, a back plate slide block, a back plate slide block connecting rod, a seat plate push rod, a small leg plate, a seat plate push rod frame, a foot plate, a rotating frame body push rod and a rotating frame body rotating shaft; the supporting device comprises supporting wheels, supporting wheel slide rails, frame vertical slide rails, rotating frame body connecting rod shafts, rotating frame body connecting rods, frame vertical slide blocks, supporting wheel slide block connecting rods, supporting wheel slide blocks and supporting wheel connecting pieces; the posture conversion device can realize random mutual switching between standing posture, sitting posture, lying posture and curled lying posture without sequence limitation, and realizes multi-posture conversion.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rehabilitation robots, in particular to a multi-posture transformation wheelchair bed. BACKGROUND

[0002] With the continuous development of society, the problem of population aging is becoming more and more serious, and more and more elderly people living alone and disabled people with difficulty in moving cannot be well taken care of, so rehabilitation robots have emerged as the times require. At present, the rehabilitation equipment that can help semi-disabled personnel to realize posture transformation is mainly nursing bed, wheelchair and the like, most of which can only realize 1-2 kinds of posture transformation, and most of the wheelchair beds will produce a certain additional overturning moment when the user's posture is transformed, thereby causing unstable state during use and overturning. Therefore, designing a robot capable of multi-posture transformation and avoiding the generation of overturning moment during use to cause instability is helpful for the user to carry out rehabilitation training. SUMMARY

[0003] In view of the deficiencies of the prior art, the technical problem to be solved by the present application is to provide a multi-posture transformation wheelchair bed.

[0004] The technical solution for solving the technical problem of the present application is to provide a multi-posture transformation wheelchair bed, characterized in that the wheelchair bed comprises a posture transformation device, a rack, a supporting device, a moving device and a base; the rack is fixed on the base; the moving device is used to realize movement in any direction;

[0005] The posture transformation device comprises a rotating frame body, a seat plate, a back plate, back plate slide rails, staggered connecting rods, back plate slide blocks, back plate slide block connecting rods, a seat plate push rod, a calf plate, a seat plate push rod frame, a foot plate, a rotating frame body push rod and a rotating frame body rotating shaft;

[0006] The rotating frame body is rotatably installed on the rack through the rotating frame body rotating shaft; the calf plate is fixed on the rotating frame body, the bottom end is fixed with the foot plate, and the top end is hinged to one end of the seat plate; the back plate is hinged to the other end of the seat plate; the cylinder body of the rotating frame body push rod is hinged to the base, and the push rod is hinged to the calf plate, so as to realize the rotation of the rotating frame body around the rotating frame body rotating shaft relative to the rack; the seat plate push rod frame is fixed on the rotating frame body; the cylinder body of the seat plate push rod is hinged to the seat plate push rod frame, and the push rod is hinged to the seat plate;

[0007] Two back plate slide rails are fixed on the back of the back plate; two back plate slide blocks are respectively slidably connected with the respective back plate slide rails; two back plate slide blocks are respectively fixedly connected with two ends of one staggered connecting rod, so that the two back plate slide blocks always have a height difference; one end of each of the two back plate slide block connecting rods is hinged to the rotating frame body, and the other end is respectively hinged to the respective back plate slide block; the two back plate slide block connecting rods are parallel to each other, and the height difference of the two back plate slide block connecting rods is the same as the height difference of the two back plate slide blocks; the two back plate slide block connecting rods, the staggered connecting rod and the rotating frame body form a spatial parallelogram mechanism;

[0008] The support device comprises a support wheel, a support wheel sliding rail, a rack vertical sliding rail, a rotating frame connecting rod shaft, a rotating frame connecting rod, a rack vertical sliding block, a support wheel sliding block connecting rod, a support wheel sliding block and a support wheel connecting piece.

[0009] The rack vertical sliding rail is fixedly connected to the base; the rack vertical sliding block is slidingly installed in the rack vertical sliding rail; the lower end of the rotating frame connecting rod and the upper end of the support wheel sliding block connecting rod are both hingedly connected to the rack vertical sliding block; the upper end of the rotating frame connecting rod is hingedly connected to the rotating frame through the rotating frame connecting rod shaft; the support wheel sliding rail is fixed to the base; the support wheel sliding block is slidingly installed in the support wheel sliding rail; the lower end of the support wheel sliding block connecting rod is hingedly connected to the support wheel sliding block; the support wheel connecting piece is fixed to the support wheel sliding block and located in the support wheel sliding rail; and the support wheel is installed on the support wheel connecting piece.

[0010] Compared with the prior art, the present application has the following beneficial effects:

[0011] (1) The posture conversion device can realize the random mutual switching between the standing posture, the sitting posture, the lying posture and the curled lying posture without sequence restriction, and realize the conversion of multiple postures.

[0012] (2) The support device is additionally provided, and the support wheel is slid out when the posture is switched to the lying posture or the curled lying posture, so as to provide support for the lying posture and the curled lying posture, resist the overturning moment, prevent overturning and keep stable.

[0013] (3) The posture conversion device adopts a spatial parallelogram mechanism, the relative rods always keep parallel, and the angular displacement, angular velocity and angular acceleration of the two rods are always equal, so that the backboard moves stably and the user has high comfort.

[0014] (4) The posture conversion device only adopts two electric push rods as power components, has less power source, is simple to operate, has large output torque and runs stably, so as to ensure the smooth conversion of each posture; and the sliding block is adopted as a transmission component, so that the manufacturing is simple and the reliability is high. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Fig. 1 is a schematic view of the overall structure of the present application in the standing posture;

[0016] Figure 2 Fig. 2 is a schematic view of the overall structure of the present application converted from the standing posture to the sitting posture;

[0017] Figure 3 Fig. 3 is a schematic view of the overall structure of the present application in the sitting posture;

[0018] Figure 4 Fig. 4 is a schematic view of the overall structure of the present application converted from the sitting posture to the lying posture;

[0019] Figure 5 Overall structure schematic diagram of the present application in lying position

[0020] Figure 6 Overall structure schematic diagram of the present application in curled lying position

[0021] Figure 7 Structure schematic diagram of the posture conversion device of the present application

[0022] Figure 8 Installation schematic diagram of the posture conversion device of the present application

[0023] Figure 9 Structure schematic diagram of the support device of the present application

[0024] Figure 10 Enlarged schematic diagram of I part of the present application Figure 9

[0025] In the figure, posture conversion device 1, frame 2, support device 3, moving device 4, base 5

[0026] Rotary frame body 1-1, seat plate 1-2, back plate 1-3, back plate slide rail 1-4, staggered connecting rod 1-5, back plate slide block 1-6, back plate slide block connecting rod 1-7, seat plate push rod 1-8, calf plate 1-9, seat plate push rod frame 1-10, foot plate 1-11, rotary frame body push rod 1-12, rotary frame body rotary shaft 1-13; rotary frame body back plate 1-1-1, rotary frame body seat plate 1-1-2

[0027] Support wheel 3-1, support wheel slide rail 3-2, frame vertical slide rail 3-3, rotary frame body connecting rod shaft 3-4, rotary frame body connecting rod 3-5, frame vertical slide block 3-6, support wheel slide block connecting rod 3-7 and support wheel slide block 3-8, support wheel connecting piece 3-9

[0028] Front wheel 4-1, large wheel 4-2, front wheel shaft 4-3, large wheel shaft 4-4 DETAILED DESCRIPTION

[0029] The specific embodiments of the present application are given below. The specific embodiments are only used to further illustrate the present application and do not limit the protection scope of the claims of the present application.

[0030] The present application provides a multi-posture conversion wheelchair bed (referred to as wheelchair bed) characterized in that the wheelchair bed comprises a posture conversion device 1, a frame 2, a support device 3, a moving device 4 and a base 5; the frame 2 is fixed on the base 5; the moving device 4 is installed at the bottom of the frame 2 and is used to realize movement in any direction

[0031] ​The posture transformation device 1 comprises a rotating frame body 1-1, a seat plate 1-2, a back plate 1-3, back plate slide rails 1-4, staggered connecting rods 1-5, back plate slide blocks 1-6, back plate slide block connecting rods 1-7, seat plate push rods 1-8, calf plates 1-9, seat plate push rod frames 1-10, foot plates 1-11, rotating frame body push rods 1-12 and rotating frame body rotating shafts 1-13;

[0032] The rotating frame body 1-1 is rotatably installed on the rack 2 through the rotating frame body rotating shaft 1-13; the calf plate 1-9 is fixed on the rotating frame body 1-1, the bottom end is fixed with the foot plate 1-11, and the top end is hingedly connected with one end of the seat plate 1-2; the back plate 1-3 is hingedly connected with the other end of the seat plate 1-2; the cylinder of the rotating frame body push rod 1-12 is hingedly connected to the base 5, and the push rod is hingedly connected to the calf plate 1-9, so that the rotating frame body 1-1 rotates around the rotating frame body rotating shaft 1-13 relative to the rack 2 when the rotating frame body push rod 1-12 works; the seat plate push rod frame 1-10 is fixed on the rotating frame body 1-1; the cylinder of the seat plate push rod 1-8 is hingedly connected to the seat plate push rod frame 1-10, so as to realize the rotation of the seat plate push rod 1-8 around the hinge joint of the seat plate push rod 1-8 and the seat plate push rod frame 1-10 when the seat plate push rod 1-8 works; the push rod of the seat plate push rod 1-8 is hingedly connected to the seat plate 1-2;

[0033] The two back plate slide rails 1-4 are fixed to the back of the back plate 1-3; the two back plate slide blocks 1-6 are respectively in sliding connection with the respective back plate slide rails 1-4; the two back plate slide blocks 1-6 are respectively fixedly connected with the two ends of one staggered connecting rod 1-5, so that the two back plate slide blocks 1-6 always have a height difference; one end of each of the two back plate slide block connecting rods 1-7 is hingedly connected to the rotating frame body 1-1, and the other end is respectively hingedly connected to the respective back plate slide block 1-6; the two back plate slide block connecting rods 1-7 are parallel to each other and have the same height difference as the two back plate slide blocks 1-6; the two back plate slide block connecting rods 1-7, the staggered connecting rod 1-5 and the rotating frame body 1-1 form a spatial parallelogram mechanism, so as to keep the back plate 1-3 always parallel to the rotating frame body back plate 1-1-1 of the rotating frame body 1-1;

[0034] The support device 3 comprises support wheels 3-1, support wheel slide rails 3-2, rack vertical slide rails 3-3, rotating frame body connecting rod shafts 3-4, rotating frame body connecting rods 3-5, rack vertical slide blocks 3-6, support wheel slide block connecting rods 3-7, support wheel slide blocks 3-8 and support wheel connecting pieces 3-9;

[0035] The rack vertical slide rail 3-3 is fixedly connected to the base 5; the rack vertical slide block 3-6 is slidingly installed in the rack vertical slide rail 3-3, and the rack vertical slide block 3-6 can slide in the rack vertical slide rail 3-3; the lower end of the rotating frame body connecting rod 3-5 and the upper end of the supporting wheel slide block connecting rod 3-7 are both hingedly connected to the rack vertical slide block 3-6 and relatively rotate around the rack vertical slide block 3-6; the upper end of the rotating frame body connecting rod 3-5 is hingedly connected to the rotating frame body 1-1 through the rotating frame body connecting rod shaft 3-4; the supporting wheel slide rail 3-2 is fixed to the base 5; the supporting wheel slide block 3-8 is slidingly installed in the supporting wheel slide rail 3-2 and can slide along the supporting wheel slide rail 3-2; the lower end of the supporting wheel slide block connecting rod 3-7 is hingedly connected to the supporting wheel slide block 3-8; the supporting wheel connecting piece 3-9 is fixed to the supporting wheel slide block 3-8 and located in the supporting wheel slide rail 3-2; the supporting wheel 3-1 is installed on the supporting wheel connecting piece 3-9. When the rotating frame body 1-1 rotates around the rotating frame body rotating shaft 1-13, the rack vertical slide block 3-6 vertically slides along the rack vertical slide rail 3-3, the supporting wheel slide block connecting rod 3-7 relatively rotates around the rack vertical slide block 3-6, and the supporting wheel slide block 3-8 slides along the supporting wheel slide rail 3-2 to complete the extension and retraction of the supporting wheel 3-1.

[0036] Preferably, the rotating frame body 1-1 is composed of a rotating frame body back plate 1-1-1 and a rotating frame body seat plate 1-1-2; one end of the rotating frame body back plate 1-1-1 is fixedly connected to one end of the rotating frame body seat plate 1-1-2, and the rotating frame body back plate 1-1-1 and the rotating frame body seat plate 1-1-2 are perpendicular to each other; the lower leg plate 1-9 is fixed to the other end of the rotating frame body seat plate 1-1-2; the seat plate push rod holder 1-10 is fixed to the bottom of the rotating frame body seat plate 1-1-2; the cylinder of the seat plate push rod 1-8 passes through the through hole of the rotating frame body seat plate 1-1-2 and is hingedly connected to the seat plate push rod holder 1-10; one end of each of the two back plate slide block connecting rods 1-7 is hingedly connected to the rotating frame body back plate 1-1-1.

[0037] Preferably, the two back plate slide rails 1-4 are symmetrically distributed left and right to make the stress uniform.

[0038] Preferably, the moving device 4 comprises a front wheel 4-1, a large wheel 4-2, a front wheel shaft 4-3 and a large wheel shaft 4-4.

[0039] The front wheel 4-1 is hingedly connected to the front part of the rack 2 through the front wheel shaft 4-3, and the large wheel 4-2 is hingedly connected to the middle part of the rack 2 through the large wheel shaft 4-4, thereby playing a supporting and moving role.

[0040] The working principle and working process of the application are as follows:

[0041] When in the standing position, the user stands on the foot plate 1-11, the back plate 1-3 is perpendicular to the ground, and the seat plate push rod 1-8 is in the fully extended state. Due to the action of the two back plate slider connecting rods 1-7, the two back plate slider connecting rods 1-7 are kept parallel in space and the relative distance is unchanged, so that the back plate 1-3 is always kept parallel to the rotating frame back plate 1-1-1 of the rotating frame body 1-1.

[0042] When switching from the standing position to the sitting position, the seat plate push rod 1-8 is retracted from the fully extended state, the seat plate 1-2 rotates around the hinge point with the calf plate 1-9, and the user slowly sits down. During the posture transformation process, the rotating frame body 1-1 remains stationary, and the rotation of the seat plate 1-2 drives the back plate slider 1-6 to slide upward along the back plate slide rail 1-4. At the same time, due to the existence of the spatial parallelogram mechanism, the back plate 1-3 is always perpendicular to the ground and closely attached to the user's back, providing support when the human body sits down. The seat plate push rod 1-8 is retracted until the back plate 1-3 is perpendicular to the ground and the seat plate 1-2 is parallel to the ground, and the user sits on the seat plate 1-2 with the back resting against the back plate 1-3. At this time, the wheelchair bed is switched from the standing position to the sitting position.

[0043] Switching from the sitting position to the standing position is the reverse process of switching from the standing position to the sitting position, which will not be repeated. The process from the sitting position to the standing position is a gradual force process for the legs, achieving leg strength training.

[0044] When switching from the standing position to the lying position, the rotating frame push rod 1-12 is extended, causing the rotating frame 1-1 to rotate around the rotating frame rotation axis 1-13. After rotating 90°, it is switched to the lying position.

[0045] Switching from the lying position to the standing position is the reverse process of switching from the standing position to the lying position, which will not be repeated.

[0046] When switching from the curled lying position to the standing position, the seat plate push rod 1-8 is extended, pushing the seat plate 1-2 to rotate around the rotating frame 1-1. The back plate slider 1-6 starts to slide downward along the back plate slide rail 1-4, and the back plate 1-3 pushes the user's back upward. At the same time, the rotating frame push rod 1-12 is retracted, the rotating frame 1-1 rotates around the rotating frame rotation axis 1-13, and after rotating 90°, it is switched to the standing position. At this time, the seat plate push rod 1-8 is fully extended and the rotating frame push rod 1-12 is fully retracted, the back plate 1-3 is perpendicular to the ground, and the user stands on the foot plate 1-11.

[0047] Switching from the standing position to the curled lying position is the reverse process of switching from the curled lying position to the standing position, which will not be repeated.

[0048] When switching from the sitting position to the lying position, the seat plate push rod 1-8 extends, pushing the seat plate 1-2 to rotate relative to the rotating frame 1-1, driving the back plate slider 1-6 to start sliding down along the back plate slide rail 1-4, and the back plate 1-3 supports the back of the user. Due to the existence of the spatial parallelogram mechanism, the back plate 1-3 is always parallel to the back of the rotating frame 1-1 and closely adheres to the back of the user, providing support for the human body when lying down. At the same time, the rotating frame push rod 1-12 extends, and the rotating frame 1-1 rotates around the rotating frame rotating shaft 1-13, and after rotating 90°, it is switched to the lying position. At this time, the seat plate push rod 1-8 and the rotating frame push rod 1-12 are fully extended, the back plate slider 1-6 slides to the uppermost end of the back plate slide rail 1-4, and the back plate 1-3 is parallel to the ground.

[0049] Switching from the lying position to the sitting position is the reverse process of switching from the sitting position to the lying position, which will not be repeated.

[0050] When switching from the sitting position to the lying position, the seat plate push rod 1-8 is in the fully retracted state, and the back plate slider 1-6 also remains at the uppermost end along the back plate slide rail 1-4. At this time, the back plate 1-3 is perpendicular to the ground, the seat plate 1-2 is parallel to the ground, the user sits on the seat plate 1-2, and the back is attached to the back plate 1-3. The seat plate 1-2 and the back plate 1-3 are both stationary with the rotating frame 1-1, at which time the rotating frame push rod 1-12 extends and the rotating frame 1-1 rotates around the rotating frame rotating shaft 1-13, and after rotating 90°, it is switched to the lying position.

[0051] Switching from the lying position to the sitting position is the reverse process of switching from the sitting position to the lying position, which will not be repeated.

[0052] When switching from the lying position to the lying position, the seat plate push rod 1-8 is retracted from the extended state, the seat plate 1-2 rotates around the rotating frame 1-1, the user leans against the back plate 1-3, and the rotating frame 1-1 remains stationary during the posture transformation process. The rotation of the seat plate 1-2 drives the back plate slider 1-6 to start sliding up along the back plate slide rail 1-4. Due to the existence of the spatial parallelogram mechanism, the back plate 1-3 is always parallel to the ground and closely adheres to the back of the user, providing support for the human body. When the seat plate push rod 1-8 is retracted to the end, the back plate slider 1-6 also slides to the uppermost end along the back plate slide rail 1-4, the seat plate 1-2 changes from being parallel to the ground to being perpendicular to the ground, and the user lies on the back plate 1-3.

[0053] Switching from the lying position to the lying position is the reverse process of switching from the lying position to the lying position, which will not be repeated.

[0054] When switching from other postures to lying posture or crouching posture, the rotating frame body 1-1 rotates around the rotating frame body rotating shaft 1-13, drives the rotating frame body connecting rod 3-5 to rotate around the rotating frame body connecting rod shaft 3-4, and then drives the rack vertical slider 3-6 to slide vertically downwards along the rack vertical slide rail 3-3, the supporting wheel slider connecting rod 3-7 rotates relative to the rack vertical slider 3-6, drives the supporting wheel slider 3-8 to slide outwards along the supporting wheel slide rail 3-2, and the movement of the supporting wheel slider 3-8 is transmitted to the supporting wheel 3-1 through the supporting wheel connecting piece 3-9, so that the supporting wheel 3-1 is controlled to be extended. When switching from lying posture or crouching posture to other postures, the movement process of the supporting device 3 is the reverse movement of switching from other postures to lying posture or crouching posture, which will not be repeated here.

[0055] The unmentioned part of the present application is applicable to the prior art.

Claims

1. A multi-attitude transform wheelchair-bed, characterized in that, The wheelchair bed comprises a posture transformation device (1), a frame (2), a support device (3), a moving device (4) and a base (5); the frame (2) is fixed on the base (5); the moving device (4) is used for realizing movement in any direction; The posture transformation device (1) comprises a rotating frame body (1-1), a seat plate (1-2), a back plate (1-3), back plate slide rails (1-4), staggered connecting rods (1-5), back plate slide blocks (1-6), back plate slide block connecting rods (1-7), seat plate push rods (1-8), calf plates (1-9), seat plate push rod frames (1-10), foot plates (1-11), rotating frame body push rods (1-12) and rotating frame body rotating shafts (1-13); The rotating frame body (1-1) is rotatably installed on the frame (2) through the rotating frame body rotating shafts (1-13); the calf plates (1-9) are fixed on the rotating frame body (1-1), the bottom ends of the calf plates (1-9) are fixed with the foot plates (1-11), and the top ends of the calf plates (1-9) are hingedly connected with one end of the seat plate (1-2); the back plate (1-3) is hingedly connected with the other end of the seat plate (1-2); the cylinder bodies of the rotating frame body push rods (1-12) are hingedly connected with the base (5), the push rods of the rotating frame body push rods (1-12) are hingedly connected with the calf plates (1-9), and the rotating frame body (1-1) is rotated around the rotating frame body rotating shafts (1-13) relative to the frame (2); the seat plate push rod frames (1-10) are fixed on the rotating frame body (1-1); the cylinder bodies of the seat plate push rods (1-8) are hingedly connected with the seat plate push rod frames (1-10), and the push rods of the seat plate push rods (1-8) are hingedly connected with the seat plate (1-2); The two back plate slide rails (1-4) are fixed on the back of the back plate (1-3); the two back plate slide blocks (1-6) are respectively slidably connected with the back plate slide rails (1-4); the two back plate slide blocks (1-6) are respectively fixedly connected with the two ends of one staggered connecting rod (1-5), so that the two back plate slide blocks (1-6) always have a height difference; one end of each of the two back plate slide block connecting rods (1-7) is hingedly connected with the rotating frame body (1-1), and the other end of each of the two back plate slide block connecting rods (1-7) is hingedly connected with the back plate slide block (1-6); the two back plate slide block connecting rods (1-7) are parallel to each other, and the height difference between the two back plate slide block connecting rods (1-7) is the same as the height difference between the two back plate slide blocks (1-6); the two back plate slide block connecting rods (1-7), the staggered connecting rod (1-5) and the rotating frame body (1-1) form a spatial parallelogram mechanism; The support device (3) comprises support wheels (3-1), support wheel slide rails (3-2), frame vertical slide rails (3-3), rotating frame body connecting rod shafts (3-4), rotating frame body connecting rods (3-5), frame vertical slide blocks (3-6), support wheel slide block connecting rods (3-7), support wheel slide blocks (3-8) and support wheel connecting pieces (3-9); The rack vertical slide rail (3-3) is fixedly connected to the base (5); the rack vertical slide block (3-6) is slidingly installed in the rack vertical slide rail (3-3); the lower end of the rotary frame connecting rod (3-5) and the upper end of the support wheel slide block connecting rod (3-7) are both hingedly connected to the rack vertical slide block (3-6); the upper end of the rotary frame connecting rod (3-5) is hingedly connected to the rotary frame (1-1) through the rotary frame connecting rod shaft (3-4); the support wheel slide rail (3-2) is fixed to the base (5); the support wheel slide block (3-8) is slidingly installed in the support wheel slide rail (3-2); the lower end of the support wheel slide block connecting rod (3-7) is hingedly connected to the support wheel slide block (3-8); the support wheel connecting piece (3-9) is fixed to the support wheel slide block (3-8) and located in the support wheel slide rail (3-2); and the support wheel (3-1) is installed on the support wheel connecting piece (3-9).

2. The multi-position transforming wheelchair-bed according to claim 1, characterized in that, The rotary frame (1-1) is composed of a rotary frame back plate (1-1-1) and a rotary frame seat plate (1-1-2); one end of the rotary frame back plate (1-1-1) is fixedly connected to one end of the rotary frame seat plate (1-1-2), and the rotary frame back plate (1-1-1) and the rotary frame seat plate (1-1-2) are perpendicular to each other; the lower end of the rotary frame seat plate (1-1-2) is fixedly connected to the calf plate (1-9); the bottom of the rotary frame seat plate (1-1-2) is fixedly connected to the seat plate push rod holder (1-10); the cylinder body of the seat plate push rod (1-8) penetrates through the through hole of the rotary frame seat plate (1-1-2) and is hingedly connected to the seat plate push rod holder (1-10); and one end of each of the two back plate slide block connecting rods (1-7) is hingedly connected to the rotary frame back plate (1-1-1).

3. The multi-position transforming wheelchair-bed according to claim 1, characterized in that, The two back plate slide rails (1-4) are symmetrically distributed left and right.

4. The multi-position transforming wheelchair-bed of claim 1, wherein, The mobile device (4) comprises a front wheel (4-1), a large wheel (4-2), a front wheel shaft (4-3) and a large wheel shaft (4-4); The front wheel (4-1) is hingedly connected to the front part of the rack (2) through the front wheel shaft (4-3), and the large wheel (4-2) is hingedly connected to the middle part of the rack (2) through the large wheel shaft (4-4), thereby playing a supporting and moving role.

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