Multifunctional intelligent electric wheelchair nursing bed

Abstract

The invention relates to a multifunctional intelligent electric wheelchair nursing bed which comprises a base frame, a rolling wheel mechanism installed at the bottom of the base frame, a sitting-lying posture stepless adjusting mechanism, an auxiliary standing mechanism, a defecation mechanism, a leg training mechanism and an intelligent interaction control system, wherein the sitting-lying posture stepless adjusting mechanism, the auxiliary standing mechanism, the defecation mechanism, the leg training mechanism and the intelligent interaction control system are assembled on the base frame. The sitting and lying posture stepless adjusting mechanism comprises a backrest, a leg plate frame and a movable rod; the side beam at the upper end of the base frame, the movable rod, the backrest and the leg plate frame form a hinged parallelogram mechanism; a first push rod acting on the hinged parallelogram mechanism is installed on the base frame, and stepless adjustment of sitting and lying postures is achieved through the first push rod. The auxiliary standing mechanism comprises a U-shaped seat plate and a second push rod arranged below the U-shaped seat plate, the defecation mechanism comprises a toilet box correspondingly arranged below a notch part of the U-shaped seat plate, a sliding cover is arranged above the toilet box, and the sliding cover can close or open the toilet box under the driving of a first motor; the leg training mechanism comprises a leg supporting plate, and the legs of the user are lifted for training through a first cam, a second cam and a motor which are arranged below the leg supporting plate. The wheelchair bed solves the technical problems that an existing wheelchair bed is single in function, complex in operation, lack of defecation assistance and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of smart home, and particularly to a multifunctional intelligent electric wheelchair nursing bed. Background Art

[0002] With the acceleration of the global aging process, the demand for auxiliary devices that can meet the needs of the elderly and the disabled is increasing day by day. As an important auxiliary appliance, the wheelchair bed plays a key role in improving the quality of life of this part of the population. However, there are still many deficiencies in the design and technology of the existing wheelchair bed products on the market, which limit their wider applicability and popularity.

[0003] Firstly, the design of traditional wheelchair beds usually adopts the method of separating the wheelchair from the bed body. Although it meets the basic needs of movement and rest to a certain extent, this design mode leads to a redundant overall structure and a large size, making it difficult to adapt to small-sized living environments, greatly limiting the user's freedom of movement and the possibility of going out. In addition, due to the large volume, storage has also become a problem, especially in a family environment with limited space. Secondly, the manufacturing cost of electric wheelchair beds is relatively high, which has become a major obstacle to their promotion in ordinary families and low-income groups. The high cost makes many people in actual need unable to afford it, so they cannot enjoy more convenient living conditions. Thirdly, most current wheelchair beds mainly focus on providing two basic functions: indoor movement and lying flat, lacking attention to more needs in the daily life of users, such as assisted standing, stepless adjustment of sitting and lying postures, toilet assistance, and leg rehabilitation and other comprehensive nursing functions. For example, the angle of the seat backrest is fixed and cannot be adjusted according to personal comfort or health needs, which is likely to cause problems such as pressure sores or muscle atrophy; at the same time, for the elderly with limited mobility, the toilet process often requires the help of others, which not only increases the psychological burden, but also increases the risk of muscle degeneration due to the lack of effective exercise opportunities during long-term bed rest. Finally, the existing wheelchair beds mostly rely on manual operation or simple electric control, and do not fully integrate modern intelligent interaction technologies such as voice recognition and remote control. This undoubtedly increases the use threshold for users with limited mobility and reduces the usability and user experience of the product.

[0004] In view of the above challenges, it is particularly important to develop a new type of wheelchair bed that integrates multifunctional modules and realizes optimized management through an intelligent control system. Summary of the Invention

[0005] (I) Technical Problems to be Solved

[0006] In view of the above-mentioned disadvantages and deficiencies of the prior art, the present invention provides a multifunctional intelligent electric wheelchair nursing bed, which integrates functions such as mobile transportation, stepless adjustment of sitting and lying postures, assisting with toileting, assisting with standing, passive leg training, and intelligent control. It is applicable to scenarios such as hospitals, nursing homes, and families, and is used to improve the life autonomy and comfort of users with limited mobility, improve the quality of nursing, and at the same time has a simple structure, solving the problems of the existing wheelchair beds with single functions, poor mobility, complex operation, lack of toileting assistance, and lack of leg rehabilitation training.

[0007] (II) Technical Solution

[0008] The present invention provides a multifunctional intelligent electric wheelchair nursing bed, which includes a base frame, a roller mechanism installed at the bottom of the base frame, and a stepless sitting and lying posture adjustment mechanism, a toileting mechanism, an assisting standing mechanism, a leg training mechanism, and an intelligent interaction control system assembled on the base frame;

[0009] The stepless sitting and lying posture adjustment mechanism includes a backrest, a leg plate frame, and two moving rods. The two moving rods are respectively suspended below the two side beams at the upper end of the base frame. The lower end of the backrest is respectively hinged to the rear beam at the upper end of the base frame and the rear end of the moving rod; the upper end of the leg plate frame is hinged to the front beam at the upper end of the base frame, and the middle of the leg plate frame is hinged to the front end of the moving rod, so that the two side beams at the upper end of the base frame, the two moving rods, the backrest, and the leg plate frame form a hinged parallelogram mechanism; a first push rod acting on the hinged parallelogram mechanism is installed on the base frame;

[0010] The assisting standing mechanism includes a U-shaped seat plate and a second push rod provided below the U-shaped seat plate. One end of the U-shaped seat plate is hinged to the upper end of the base frame, the lower end of the second push rod is fixed on the base, and the upper end is hinged to the bottom surface of the other end of the U-shaped seat plate;

[0011] The toileting mechanism includes a toilet box correspondingly provided below the notch of the U-shaped seat plate. A sliding cover is provided above the toilet box, and the sliding cover can close or open the toilet box under the drive of a first motor; the toilet box is fixed on the base frame;

[0012] The leg training mechanism includes a leg support plate. One end of the leg support plate is hinged to the upper end of the base frame. The leg plate frame is provided with a horizontally arranged rotating shaft, and a first cam and a second cam are fixed on the rotating shaft; the rotating shaft is driven by a second motor to rotate, and the first cam and the second cam respectively support the two leg support plates;

[0013] The intelligent interaction control system includes a controller, and the controller controls the first push rod, the second push rod, the first motor, the second motor, and the roller drive motor to act according to control instructions.

[0014] In one embodiment, when the sliding cover in the toileting mechanism closes the toilet box, the sliding cover fills the notch of the U-shaped seat plate, and the upper surface of the sliding cover is flush with the upper surface of the U-shaped seat plate.

[0015] In one embodiment, an inverted L-shaped slide rail is provided on the outer side of the toilet box in the toilet mechanism. The sliding cover includes a plurality of cover plates, and a pulley that slidably cooperates with the inverted L-shaped slide rail is provided below each cover plate. The plurality of cover plates are sequentially connected to each other by hinges. The first motor drives at least one of the plurality of cover plates or at least one pulley to move the entire sliding cover along the inverted L-shaped slide rail.

[0016] In one embodiment, the upper end of the base frame includes a front beam and a rear beam. The front beam faces the user's legs correspondingly, and the rear beam faces the user's back correspondingly. A first fixed shaft is arranged side by side on the front beam, and a second fixed shaft is arranged side by side on the rear beam. One end of the leg plate frame is hinged to the first fixed shaft. The front ends of the two movable rods are respectively hinged to the middle part of the leg plate frame. A movable shaft is inserted between the rear ends of the two movable rods, and both ends of the movable shaft are respectively hinged to the lower ends on both sides of the backrest. The backrest is also hinged to the second fixed shaft and two vertical beams on the rear side of the base frame. The lower end of the first push rod is hinged to the base frame, and its upper end is hinged to the movable shaft.

[0017] In one embodiment, a U-shaped bent rod is provided on the movable shaft. The U-shaped bent rod includes two free ends and a bottom end. The two free ends are hinged to the middle part of the movable shaft, and the bottom end of the U-shaped bent rod is inserted into a horizontal through hole provided at the upper end of the first push rod.

[0018] In one embodiment, the two leg support plates of the leg training mechanism are respectively hinged to the first fixed shaft. A cross bar is arranged horizontally on the leg plate frame, and the cross bar is parallel to the rotating shaft. A gear is fixed on the rotating shaft. A second motor is installed on the cross bar through a motor base. The output wheel of the second motor meshes with the gear. The first cam and the second cam are respectively fixed on both sides of the gear, and the two cams are 180 degrees out of phase. The first cam and the second cam respectively support on the bottom surfaces of the two leg support plates. Preferably, the upper surface of the leg support plate is a concave arc surface, which can better support the user's calf.

[0019] In one embodiment, in the auxiliary standing mechanism, one end of the U-shaped seat plate is hinged to the first fixed shaft. The lower end of the second push rod is hinged to the base frame, and its upper end is hinged to the bottom surface of the other end of the U-shaped seat plate.

[0020] In one embodiment, armrests are fixedly connected to both sides of the U-shaped seat plate. When the U-shaped seat plate is pushed up by the second push rod, the armrests change their orientations synchronously with the U-shaped seat plate, thereby improving the safety of use. A limit switch is provided at the bottom of the U-shaped seat plate to ensure the safety of the lifting action.

[0021] In one embodiment, the roller mechanism includes a driving wheel and a driven wheel. The driving wheel is installed on the rear beam at the bottom of the base frame, and the driven wheel is installed on the front beam at the bottom of the base frame. The two driving wheels at both ends of the rear beam are respectively driven by two independently controlled motors.

[0022] In one embodiment, the intelligent interaction system further includes an interaction interface, which inputs control instructions by at least one of voice, touch, button, remote control device or smart device app.

[0023] (III) Beneficial effects

[0024] The multifunctional intelligent electric wheelchair nursing bed of the present invention integrates functions such as mobile transportation, stepless adjustment of sitting and lying postures, assisted toilet use, assisted standing, passive leg training and intelligent interaction. It is applicable to scenarios such as hospitals, nursing homes, and families, meeting the diverse needs of users, improving the life autonomy and comfort of users with mobility difficulties, improving the nursing quality, and at the same time having a streamlined structure, solving the problems of large volume, single function, poor mobility, complex operation of existing wheelchair beds, as well as the lack of toilet assistance and leg rehabilitation training. The intelligent interaction control system enhances the practicality and intelligent level. The stepless adjustment of the sitting and lying postures can achieve a stepless linkage adjustment of 0-90 degrees between the backrest and the leg board relative to the U-shaped seat board, enabling the user to lie down or sit in the most suitable way for themselves. A sliding cover is provided above the toilet box, which can be sealed in time after the user defecates. An activated carbon filter layer is provided inside the toilet box to reduce the spread of odors. The leg support board is supported by the leg support bracket and can be independently controlled relative to the leg support board. The user can perform passive leg training both when sitting or lying, promoting limb blood circulation. The assisted standing function can slowly lift the U-shaped seat board, enabling the patient to meet the need for independent standing in a standing position suitable for standing, alleviating the problem of difficulty in active standing for patients with lumbar diseases. Description of the drawings

[0025] Figure 1 It is a schematic diagram of the overall structure of the multifunctional intelligent electric wheelchair nursing bed of the present invention.

[0026] Figure 2 It is a schematic diagram of the base frame structure of the multifunctional intelligent electric wheelchair nursing bed of the present invention.

[0027] Figure 3 It is a schematic diagram of the structure of the stepless adjustment mechanism for sitting and lying postures of the multifunctional intelligent electric wheelchair nursing bed of the present invention.

[0028] Figure 4 It is a schematic diagram of the structure of the assisted standing mechanism of the multifunctional intelligent electric wheelchair nursing bed of the present invention Figure 1 .

[0029] Figure 5 It is a schematic diagram of the structure of the assisted standing mechanism of the multifunctional intelligent electric wheelchair nursing bed of the present invention Figure 2 .

[0030] Figure 6 It is a schematic diagram of the structure of the toilet mechanism of the multifunctional intelligent electric wheelchair nursing bed of the present invention.

[0031] Figure 7 This is a schematic structural diagram of the leg training mechanism of the multifunctional intelligent electric wheelchair nursing bed of the present invention.

[0032] Figure 8 This is a schematic structural diagram of the roller mechanism of the multifunctional intelligent electric wheelchair nursing bed of the present invention. Detailed implementation manners

[0033] In order to more clearly illustrate the specific implementation manners of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific implementation manners or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings and further deformed without departing from the solution of the present invention.

[0034] As Figure 1 shown, the present invention provides a multifunctional intelligent electric wheelchair nursing bed, which includes a base frame, a roller mechanism installed at the bottom of the base frame, and a sitting and lying posture stepless adjustment mechanism, a toilet use mechanism, an assisted standing mechanism, a leg training mechanism, and an intelligent interaction control system assembled on the base frame. Among them, the base frame 10 is used to install rollers and assemble various functional mechanisms such as the sitting and lying posture stepless adjustment mechanism, the toilet use mechanism, the assisted standing mechanism, and the leg training mechanism. Combining Figure 2 shown, the base frame 10 includes a hollow hexahedron 11 composed of 12 beams connected. At the same time, a first reinforcing beam 12 and a second reinforcing beam 13 are also provided at the rear side of the hollow hexahedron. The first reinforcing beam 12 is arranged in the middle of the rear side of the hollow hexahedron and horizontally connects the vertical beams on both sides. The second reinforcing beam 13 is connected to the extended ends of the two bottom beams arranged along the front and rear directions at the bottom of the base frame 10. The structure of the base frame 10 can reduce the overall weight of the multifunctional intelligent electric wheelchair nursing bed and ensure the structural stability. At the same time, there are enough support beams for installing various functional mechanisms such as the sitting and lying posture stepless adjustment mechanism, the toilet use mechanism, the assisted standing mechanism, and the leg training mechanism. In this application document, "front" refers to the orientation of the user's legs, "rear" refers to the orientation of the user's back, and "both sides" refers to the "left and right" orientation of the user.

[0035] Combining Figure 1 、 3As shown in the figure, it is a schematic structural diagram of the stepless adjustment mechanism for the sitting and lying postures of the multifunctional intelligent electric wheelchair nursing bed of the present invention. The stepless adjustment mechanism for the sitting and lying postures includes a backrest 21, a leg rest frame 22, and two moving rods 23. The two moving rods 23 are respectively suspended below the two side beams 16 at the upper end of the base frame. The two sides of the backrest 21 are respectively hinged to the rear beam at the upper end of the base frame 10 and the rear end portions of the moving rods 23. The upper end of the leg rest frame 22 is hinged to the front beam at the upper end of the base frame 10, and the middle of the leg rest frame 22 is hinged to the front end portions of the moving rods 23, so that the two side beams 16 at the upper end of the base frame, the two moving rods 23, the backrest 21, and the leg rest frame 22 form a hinged parallelogram mechanism. A first push rod 25 acting on the hinged parallelogram mechanism is also installed on the base frame 10. Among them, since the front beam at the upper end of the hollow hexahedron 11 of the base frame is usually an aluminum alloy profile (with good supporting strength), it will be difficult for the connecting mechanism to rotate if it is directly connected to the aluminum alloy profile. Therefore, a round bar-shaped first fixing shaft 110 can be arranged side by side on the front beam at the upper end of the hollow hexahedron 11, and the upper end of the leg rest frame 22 is hinged to the first fixing shaft 110. At the same time, a round bar-shaped second fixing shaft 120 can be arranged side by side on the rear beam at the upper end of the hollow hexahedron 11, and the second fixing shaft 120 is used for the hinge of the backrest 21. See Figure 2 As shown in the figure, shaft hole assemblies 1101 for assembling the first fixing shaft 110 or the second fixing shaft 120 are respectively provided at the front and rear beams at the upper end of the hollow hexahedron 11 of the base frame 10. It can be understood that if the front and rear beams at the upper end of the hollow hexahedron 11 of the base frame 10 are themselves round bar-shaped components with a smooth surface, the first fixing shaft 110 and the second fixing shaft 120 can be omitted. At this time, the upper end of the leg rest frame 22 can be directly hinged to the front beam at the upper end of the hollow hexahedron 11, and the lower end of the backrest 21 can be hinged to the rear beam at the upper end of the hollow hexahedron 11.

[0036] To facilitate the stable connection between the lower ends of the two sides of the backrest 21 and the rear end portions of the moving rods 23, as Figure 3 shown in the figure, a moving shaft 232 is horizontally inserted through the rear end portion of the moving rod 23 (see Figure 1) The two ends of the movable shaft 232 are respectively hinged to the lower ends on both sides of the backrest 21. The first push rod 25 is an electric push rod, which includes being hinged to the lower end and the upper end of the second reinforcing beam 13, and the upper end is hinged to the movable shaft 232 through a U-shaped bent rod 2321. The U-shaped bent rod 2321 includes two free ends and a bottom end. Its two free ends are hinged to the middle part of the movable shaft 232, and the bottom end of the U-shaped bent rod 2321 is inserted into the horizontal through hole provided at the upper end of the first push rod 25. Since both the first push rod 25 and the second push rod 32 are arranged at a relatively central position of the base frame 10 (which can lift more stably), to prevent the structure of the second push rod 32 from interfering with the structure of the first push rod 25, a space is left for the arrangement and operation of the second push rod 32 through the U-shaped bent rod 2321. For example, the upper end of the push rod of the second push rod 32 can pass through the middle of the U-shaped bent rod 2321 and act on the U-shaped seat plate 31. When the first push rod 25 expands and contracts, it pulls the movable shaft 232 to move obliquely up and down. The movable shaft 232 drives the rear end of the movable rod 23 and the lower end of the backrest 21 to move obliquely up and down synchronously. At this time, the articulated parallelogram mechanism deforms, and the movable rod 23 pushes forward and approaches the upper end of the base frame 10, which causes the leg plate frame 22 to rotate upward with the first fixed shaft 110 as the center. At the same time, the upper end of the backrest 21 deflects backward and horizontally, so that the nursing bed is adjusted from the sitting to the lying posture; conversely, when the first push rod 25 retracts, the upper end of the backrest 21 deflects forward and vertically, and the leg plate frame 22 rotates downward with the fixed shaft 110 as the center, so that the nursing bed is adjusted from the lying to the sitting posture. Among them, the front end of the movable rod 23 is connected to the side frames on both sides of the leg plate frame 22 through a hinge, or can also be hinged to the two ends of a cross bar 221 or a rotating shaft 222 as shown in Figure 7 . Combined with Figure 1 and Figure 3 as shown, the backrest 21 has a total of three hinge parts. The first hinge part is the hinge formed between the lower end of the backrest 21 and the movable shaft 232. The second hinge part 210 of the backrest 21 is located above the movable shaft 232, and the second hinge part 210 is hinged to the two vertical beams on the rear side of the base frame 10. The third hinge part is the hinge between the backrest and the upper rear beam of the base frame 10 or the second fixed shaft 120. The second hinge part 210 can enhance the stability of the backrest 21 during the rotation process, so that the backrest 21 rotates with the second hinge part 210 as the center. The design of the U-shaped bent rod 2321 improves the space utilization rate inside the hollow hexahedron 11 of the base frame 10, making the structure of the nursing bed more delicate.

[0037] Combined with Figure 1 and Figures 4 - 5As shown, the auxiliary standing mechanism includes a U-shaped seat board 31 and a second push rod 32 disposed below the U-shaped seat board 31. One end of the U-shaped seat board 31 is hinged to the upper end of the base frame 10. Specifically, the front end of the U-shaped seat board 31 is hinged to the first fixed shaft 110 provided on the front beam of the upper end of the hollow hexahedron 11 of the base frame 10. The lower end of the second push rod 32 is fixed on the first reinforcing beam 12 of the base 10, and the upper end is hinged to the bottom surface of the rear end of the U-shaped seat board 31. Armrests 311 are also fixed on both sides of the U-shaped seat board 31. The second push rod 32 pushes below the U-shaped seat board 31, enabling the U-shaped seat board 31 to flip and lift relative to the first fixed shaft 110. As Figure 5 shown, when the U-shaped seat board 31 is pushed and lifted by the second push rod 32, the armrests 311 and the U-shaped seat board 31 change their orientations synchronously, thereby improving the safety of use for the user. A limit switch is provided at the bottom of the U-shaped seat board 31 to ensure the maximum amplitude and safety of the lifting action. The auxiliary standing mechanism has the function of assisting patients with lumbar diseases such as lumbar disc herniation to stand up. The U-shaped seat board 31 is preferably a seat board with a sponge mask to enhance comfort. There is a notch in the middle of the U-shaped seat board 31, which is convenient for people with mobility difficulties to use the toilet.

[0038] Combined with Figure 1 and Figure 6As shown, the toilet mechanism includes a toilet bowl 41 correspondingly disposed below the notch of the U-shaped seat plate 31. The toilet bowl 41 is fixed inside the hollow hexahedron 11 of the base frame 10, and the upper end of the toilet bowl 41 has an opening. A sliding cover 42 is provided above the toilet bowl 41, and the sliding cover 42 can be closed or opened under the drive of a first motor (not shown). When the sliding cover 42 closes the toilet bowl 41 in the toilet mechanism, the sliding cover 42 can exactly fill the notch of the U-shaped seat plate 31, and the upper surface of the sliding cover 42 is flush with the upper surface of the U-shaped seat plate 31 to increase the comfort of the user. An inverted L-shaped slide rail 43 is provided on the outer side of the toilet bowl of the toilet mechanism. The horizontal section of the inverted L-shaped slide rail 43 is located on the left and right sides of the opening of the toilet bowl 41, and the vertical section of the inverted L-shaped slide rail 43 is located at the rear side of the opening of the toilet bowl 41. When the sliding cover 42 moves to the horizontal section of the inverted L-shaped slide rail 43 under the drive of the first motor, the sliding cover 42 can cover the toilet bowl 41 to prevent the odor of excrement from overflowing. Deodorizing materials such as activated carbon powder are provided in the toilet bowl 41 to further reduce the odor overflow. Preferably, the sliding cover 42 includes a plurality of cover plates 421, and a pulley 422 that is slidably engaged with the inverted L-shaped slide rail 43 is provided below each cover plate 421. The pulley 422 can slide along the inverted L-shaped slide rail 43. These cover plates 421 are sequentially connected by hinges and can slide along the bend of the inverted L-shaped slide rail 43. When the first motor drives at least one of the plurality of cover plates 421 or at least one pulley 422 to move, the whole sliding cover 42 can be driven to move along the inverted L-shaped slide rail 43. Preferably, the cover plate 421 is made of a flexible material or a sponge mask is provided on the surface, which can further provide a comfortable sitting and lying experience and prevent the hard material from pinching the user's buttocks. Among them, the first drive motor is preferably a micro motor, which is provided below one of the cover plates 421 or integrated with at least one pulley 422.

[0039] Combined with Figure 1 and Figures 7 - 8As shown in the figure, the leg training mechanism includes a leg support plate 51. One end of the leg support plate 51 is hinged to a first fixed shaft 110 provided on the upper front beam of the base frame 10. The leg plate frame 22 is also hinged to the first fixed shaft 110. A cross bar 221 and a rotating shaft 222 are arranged horizontally below the leg plate frame 22. The cross bar 221 can be parallel to the rotating shaft 222. A gear 223 is fixed on the rotating shaft 222. A second motor 224 is installed on the cross bar 221 through a motor base. The output wheel 2241 of the second motor 224 meshes with the gear 223. The gear 223 is fixed on the rotating shaft 222, and the gear 223 drives the rotating shaft 222 to rotate synchronously. The rotating shaft 222 fixes a first cam 225 and a second cam 226, which respectively support the bottoms of the two leg support plates 51. The first cam 225 and the second cam 226 are arranged on both sides of the gear 223, and the two cams form a 180-degree difference. As the second motor 224 rotates, it drives the gear 223 and the rotating shaft 222 to rotate. After the rotating shaft 222 rotates, the first cam 225 and the second cam 226 rotate. Due to the difference between the first cam 225 and the second cam 226, the leg support plates 51 of the left and right legs of the user are successively lifted, performing passive training on the user's legs to increase the user's blood circulation and avoid the problem of poor blood circulation caused by sitting for a long time. Preferably, the upper surface of the leg support plate 51 is a concave arc surface, so that it can better match the contour of the user's calf; the surface of the leg support plate 51 can also be wrapped with a sponge cover to improve comfort.

[0040] Combined with Figure 1 and Figure 8 As shown in the figure, the roller mechanism includes a driving wheel 61 and a driven wheel 62. The two driving wheels 61 are installed at both ends of the rear beam at the bottom of the base frame, and the two driven wheels 62 are installed at both ends of the front beam at the bottom of the base frame. The two driving wheels 61 at both ends of the rear beam are respectively driven by two independently controlled motors 63. The driven wheels 62 are universal wheels, thereby realizing the forward and backward movement or differential steering of the multifunctional intelligent electric wheelchair nursing bed.

[0041] The multifunctional intelligent electric wheelchair nursing bed of the present invention further includes an intelligent interaction control system. The intelligent interaction control system can be set on one side armrest 311 or on the back side of the backrest 21. The intelligent interaction control system includes a controller and an interaction interface. The interaction interface inputs control instructions in at least one of the ways of voice, touch, button, remote control device or intelligent device app. The controller controls the first push rod, the second push rod, the first motor, the second motor and the roller drive motor, etc. to act according to the control instructions. The nursing bed is also provided with a rechargeable battery, and the battery provides the electrical energy required for the operation of the first push rod, the second push rod, the first motor, the second motor, the roller drive motor, the controller and the interaction interface, etc. The present invention realizes intelligent designs such as voice interaction and wireless communication module, and the user can easily realize remote control, reducing the operation complexity, and is especially suitable for users with inconvenient mobility.

[0042] The terms used in this invention are only for describing specific embodiments and do not limit the scope of this application. In the base frame, "front" corresponds to facing the user's legs, and "rear" corresponds to facing the user's back; "both sides" refers to the left and right sides of the user. When it is not specifically stated that the "beam" of the base frame is a vertical beam, it refers to a cross beam; when it is specified as a vertical beam, it specifically refers to a vertical beam perpendicular to the ground.

[0043] As shown in the specification of this invention, unless the context clearly indicates an exceptional situation, words such as "a", "an", "one kind", and / or "the" do not specifically refer to the singular and may also include the plural. The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method or device including the said element.

[0044] It should also be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to this invention. Unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this invention can be understood according to specific circumstances.

[0045] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of this invention and not to limit them; although this invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements, or in the case where the technical features in the above embodiments do not conflict with each other, can be combined in the manner recorded in the embodiments, and these modifications, replacements or combinations do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of each embodiment of this invention.

Claims

1. A multifunctional intelligent electric wheelchair nursing bed, characterized in that, Comprising: A base frame, a roller mechanism mounted at the bottom of the base frame, and a stepless adjustment mechanism for sitting and lying postures, a toilet use mechanism, an assisted standing mechanism, a leg training mechanism, and an intelligent interaction control system assembled on the base frame; The stepless adjustment mechanism for sitting and lying postures includes a backrest, a leg board frame, and two moving rods. The two moving rods are respectively suspended under the two side beams at the upper end of the base frame. The lower end of the backrest is respectively hinged to the rear beam at the upper end of the base frame and the rear end of the moving rod; the upper end of the leg board frame is hinged to the front beam at the upper end of the base frame, and the middle of the leg board frame is hinged to the front end of the moving rod, so that the two side beams at the upper end of the base frame, the two moving rods, the backrest, and the leg board frame form a hinged parallelogram mechanism; a first push rod acting on the hinged parallelogram mechanism is installed on the base frame; The assisted standing mechanism includes a U-shaped seat plate and a second push rod arranged under the U-shaped seat plate. One end of the U-shaped seat plate is hinged to the upper end of the base frame. The lower end of the second push rod is fixed on the base, and the upper end is hinged to the bottom surface of the other end of the U-shaped seat plate; The toilet use mechanism includes a toilet box correspondingly arranged under the notch part of the U-shaped seat plate. A sliding cover is arranged above the toilet box, and the sliding cover can close or open the toilet box under the drive of a first motor; The toilet box is fixed on the base frame; The leg training mechanism includes a leg support plate. One end of the leg support plate is hinged to the upper end of the base frame. The leg board frame is provided with a horizontally arranged rotating shaft, and a first cam and a second cam are fixed on the rotating shaft; the rotating shaft is driven by a second motor to rotate, and the first cam and the second cam respectively support the two leg support plates; The intelligent interaction control system includes a controller, and the controller controls the first push rod, the second push rod, the first motor, the second motor, and the roller drive motor to act according to control instructions.

2. The multifunctional intelligent electric wheelchair nursing bed according to claim 1, wherein When the sliding cover in the toilet use mechanism closes the toilet box, the sliding cover fills the notch part of the U-shaped seat plate, and the upper surface of the sliding cover is flush with the upper surface of the U-shaped seat plate.

3. The multifunctional intelligent electric wheelchair nursing bed according to claim 2, wherein, An inverted L-shaped slide rail is arranged on the outer side of the toilet box in the toilet use mechanism. The sliding cover includes a plurality of cover plates, and a pulley slidingly matched with the inverted L-shaped slide rail is arranged under each cover plate. The plurality of cover plates are sequentially connected by hinges; the first motor drives at least one cover plate or at least one pulley among the plurality of cover plates, so that the sliding cover moves integrally along the inverted L-shaped slide rail.

4. The multifunctional intelligent electric wheelchair nursing bed according to claim 1, characterized in that, The upper end of the base frame includes a front beam and a rear beam. The front beam faces the user's legs correspondingly, and the rear beam faces the user's back correspondingly; a first fixed shaft is arranged side by side on the front beam, and a second fixed shaft is arranged side by side on the rear beam. One end of the leg board frame is hinged to the first fixed shaft, the front end parts of the two moving rods are respectively hinged to the middle part of the leg board frame, a moving shaft is inserted between the rear end parts of the two moving rods, and the two ends of the moving shaft are respectively hinged to the lower ends on both sides of the backrest. The backrest is also hinged to the second fixed shaft and the two vertical beams at the rear of the base frame; the lower end of the first push rod is hinged to the base frame, and the upper end is hinged to the moving shaft.

5. The multi-functional intelligent electric wheelchair nursing bed according to claim 4, characterized in that, A U-shaped bent rod is arranged on the moving shaft. The U-shaped bent rod includes two free ends and a bottom end. The two free ends are hinged to the middle part of the moving shaft, and the bottom end of the U-shaped bent rod is inserted into a horizontal through hole arranged at the upper end of the first push rod.

6. The multifunctional intelligent electric wheelchair nursing bed according to claim 4, characterized in that, The two leg support plates of the leg training mechanism are respectively hinged to the first fixed shaft; a cross bar is transversely arranged on the leg plate frame, and this cross bar is parallel to the rotating shaft; a gear is fixed on the rotating shaft; a second motor is installed on the cross bar through a motor base, the output wheel of the second motor meshes with the gear, the first cam and the second cam are respectively fixed on both sides of the gear, the two cams are 180 degrees out of phase, the first cam and the second cam respectively support on the bottom surfaces of the two leg support plates; the upper surface of the leg support plate is a concave arc surface.

7. The multifunctional intelligent electric wheelchair nursing bed according to claim 4, characterized in that, In the auxiliary standing mechanism, one end of the U-shaped seat plate is hinged to the first fixed shaft; the lower end of the second push rod is hinged to the base frame, and its upper end is hinged to the bottom surface of the other end of the U-shaped seat plate.

8. The multifunctional intelligent electric wheelchair nursing bed according to claim 1 or 7, characterized in that, Arms are fixedly connected to both sides of the U-shaped seat plate; when the U-shaped seat plate is pushed up by the second push rod, the arms change their orientations synchronously with the U-shaped seat plate.

9. The multifunctional intelligent electric wheelchair nursing bed according to claim 1, characterized in that, The roller mechanism includes a driving wheel and a driven wheel, the driving wheel is installed on the rear beam at the bottom of the base frame, the driven wheel is installed on the front beam at the bottom of the base frame, and the two driving wheels at both ends of the rear beam are respectively driven by two independently controlled motors.

10. The multifunctional intelligent electric wheelchair nursing bed according to claim 1, characterized in that, The intelligent interaction system further includes an interaction interface, and this interaction interface inputs control instructions through at least one of voice, touch, button, remote control device or intelligent device app.

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