Combined spliced electric bed

Abstract

The utility model provides a combined type spliced electric bed, which is used for solving the problems of inconvenient assembly and difficult storage logistics caused by multiple components and complex structure in the prior art, and comprises a bed frame, the bed frame comprises a front cross beam, a rear cross beam and two side beam components, each side beam component comprises a side beam and a front rotating rod, and one end of each front rotating rod is hinged to the middle of the corresponding side beam; the front driving unit comprises a front driving piece, a middle supporting beam and a front connecting rod; the bed plate comprises a front supporting plate; in the assembled state, the front cross beam, the rear cross beam and the two side beams define a frame structure of the bed frame, the middle supporting beam is arranged in the middle of the bed frame, the two ends of the middle supporting beam are connected with the two side beams respectively, and the front driving piece drives the front connecting rod and drives the front rotating rod to rotate around the hinge point of the front rotating rod and the side beams. And therefore, the front supporting plate is located at various positions including the horizontal position.

Description

Technical Field

[0001] This utility model relates to the field of smart home technology, and in particular to a modular electric bed. Background Technology

[0002] As society progresses, people's pursuit of quality of life is constantly improving, which is also reflected in higher requirements for the functionality and quality of home furnishings. Among many home furnishings, the selection of beds is particularly important. To meet the need for portability, foldable electric beds are widely popular due to their novel folding design. These beds are compact in their folded state, making them easy to store, and also significantly reducing transportation costs, making online purchase and self-assembly a reality.

[0003] However, existing folding beds on the market, in pursuit of reducing logistics costs, often divide the bed frame into numerous small parts and rely on screws and other connectors for assembly. While this design helps reduce transport volume, it also presents challenges for users during assembly. Due to the large number of parts and potentially insufficiently detailed assembly instructions, users need to carefully read the manual while assembling, sometimes requiring the use of tools. Furthermore, the numerous connectors and complex structure increase the overall weight, causing inconvenience for users when moving and storing the bed, severely impacting the user experience. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the technical problem to be solved by this utility model is to provide a modular electric bed that solves the problems of inconvenient assembly and difficult storage and logistics caused by the multiple components and complex structure of the prior art.

[0005] To solve the above-mentioned technical problems, this utility model provides a modular electric bed, comprising:

[0006] A bed frame, the bed frame including a front crossbeam, a rear crossbeam and two side beam assemblies, the side beam assembly including a side beam and a front rotating rod hinged at one end to the middle of the side beam;

[0007] A front drive unit, the front drive unit including a front drive component, a central support beam and a front connecting rod;

[0008] The bed board includes a front support plate;

[0009] In the assembled state, the front crossbeam, rear crossbeam, and two side beams form the frame structure of the bed frame. The middle support beam is located in the middle of the bed frame and its two ends are respectively connected to the two side beams. One end of the front drive member is hinged to the middle support beam, and the other end is hinged to the front connecting rod. The two ends of the front connecting rod are respectively connected to the other ends of the two front rotating rods. The front support plate is located on the front rotating rod. The front drive member drives the front connecting rod and causes the front rotating rod to rotate around its hinge point with the side beam, thereby making the front support plate in various positions, including a horizontal position. In the horizontal position, the front rotating rod rests on the side beam.

[0010] As a more preferred embodiment, the side beam assembly further includes a rear linkage structure, which includes a rear rotating rod, a rear transmission rod, and a rear limiting rod. The two ends of the rear transmission rod are respectively hinged to one end of the rear rotating rod and one end of the rear limiting rod, and the other ends of the rear rotating rod and the rear limiting rod are hinged to the side beam.

[0011] As a more preferred embodiment, the modular electric bed further includes a rear drive unit, which includes a rear drive component and a rear connecting rod. In the assembled state, both ends of the rear connecting rod are connected to the two rear rotating rods respectively, one end of the rear drive component is hinged to the rear crossbeam, and the other end is hinged to the rear connecting rod.

[0012] As a more preferred embodiment, the bed board also includes a thigh support plate and a calf support plate. In the assembled state, the thigh support plate and the calf support plate are respectively mounted on the rear rotating rod and the rear transmission rod. The rear driving component drives the rear connecting rod and causes the rear rotating rod and the rear transmission rod to rotate, thereby allowing the thigh support plate and the calf support plate to be in various positions, including a horizontal position. The thigh support plate and the calf support plate provide support for the user's thighs and calves at different angles, which is closer to the user's usage scenario and improves the user experience.

[0013] As a more preferred embodiment, the bed board also includes a seat support plate. In the assembled state, the seat support plate is located in the middle of the side beam. In the folded state, the front support plate, seat support plate, thigh support plate, and calf support plate are stacked flat together. In the assembled state, the seat support plate is used to provide support for the user's buttocks and waist.

[0014] As a more preferred embodiment, the side beam assembly further includes a lifting frame disposed in the middle of the side beam, and the seat support plate is disposed on the lifting frame to ensure that the front support plate, seat support plate, thigh support plate and calf support plate are horizontal to each other in the horizontal position to meet the user's horizontal lying needs.

[0015] As a more preferred embodiment, the rear linkage structure also includes an anti-pinch rod, one end of which is hinged to the rear drive rod. In the assembled state, the calf support plate is fixed to the rear drive rod by the anti-pinch rod. The anti-pinch rod satisfies the requirement that the calf support plate can both provide support through the rear drive rod and rotate freely around one end of the anti-pinch rod, thereby preventing collisions with surrounding objects or even injury to the user during the rotation of the calf support plate driven by the rear drive unit.

[0016] As a more preferred approach, front side plates are provided at both ends of the front crossbeam. In the assembled state, the side beams overlap the front crossbeams and fit against the front side plates. The side beams are connected to the front crossbeams by fixing them to the front side plates.

[0017] As a more preferred approach, the modular electric bed also includes a leg assembly; in the assembled state, the leg assembly includes multiple legs disposed at the bottom of the bed frame, and in the stowed state, the legs are arranged side by side on one side of the short side of the bed board to accommodate the length of the side beam.

[0018] As a more preferred method, the outrigger assembly includes six outriggers, one end of each of the six outriggers is provided with a threaded post, and the bottom of both ends of the front crossbeam, rear crossbeam and middle support beam are provided with threaded holes that are adapted to the threaded posts. In the assembled state, one end of the outrigger is screwed into the threaded hole; in this way, the outrigger can be installed without the aid of installation tools.

[0019] As described above, the modular electric bed of this utility model has the following beneficial effects: In the assembled state, the front crossbeam, rear crossbeam, and two side beams of the modular electric bed of this utility model form the frame structure of the bed frame. The middle support beam is located in the middle of the bed frame and its two ends are respectively connected to the two side beams. One end of the front drive member is hinged to the middle support beam, and the other end is hinged to the front connecting rod. The two ends of the front connecting rod are respectively connected to the other ends of the two front rotating rods. The front support plate is disposed on the front rotating rod. The front drive unit drives the front connecting rod and causes the front rotating rod to rotate around its hinge point with the side beam, thereby placing the front support plate in various positions, including a horizontal position. In the horizontal position, the front rotating rod overlaps the side beam. In the folded state, the bed frame and the various components of the front drive unit are stacked on the bed board. The modular electric bed of this utility model realizes the pre-assembly of the side beam components through the integration of the rotating structure and the side beam. At the same time, the structural design of each component takes into account the convenience of the assembly steps and the compactness of the storage and packaging.

[0020] In summary, the modular electric bed of this utility model, through the rational planning and combination of various structures, pre-assembles some components without affecting the storage and packaging volume, taking into account both the convenience of the assembly steps and the compactness of the storage and packaging, and solving the problems of inconvenient assembly and difficult storage and logistics caused by the multiple components and complex structures in the prior art. Attached Figure Description

[0021] Figure 1 The diagram shows an exploded view of the combined electric bed of this utility model in its assembled state.

[0022] Figure 2 The diagram shows the combined configuration of the modular electric bed of this utility model.

[0023] Figure 3 The diagram shows an exploded view of the modular electric bed of this utility model in its stowed state.

[0024] Figure 4 The diagram shows the combined, modular electric bed of this utility model in its stored state.

[0025] Figure 5 The diagram shows an exploded view of another position on the bed board in the combined state of the modular electric bed of this utility model.

[0026] Figure 6 This diagram shows another position of the bed board in the combined electric bed of this utility model in its assembled state.

[0027] Component designation explanation

[0028] 1. Bed frame

[0029] 11 Front crossbeam

[0030] 111 Front panel

[0031] 12 Rear crossbeam

[0032] 121 Rear side panel

[0033] 13 Side Beam Assembly

[0034] 131 Side Beam

[0035] 132 Front Rotating Rod

[0036] 133 Rear Linkage Structure

[0037] 133a Rear Rotating Rod

[0038] 133b Rear Drive Rod

[0039] 133c rear limit bar

[0040] 133d Anti-pinch Bar

[0041] 134 Lifting Frame

[0042] 2 bed boards

[0043] 21 Front support plate

[0044] 22 support plates

[0045] 23 Thigh Support Board

[0046] 24 Lower leg support board

[0047] 3 Front drive unit

[0048] 31 Front drive components

[0049] 32 Support beams

[0050] 321 Middle Side Panel

[0051] 33 Front connecting rod

[0052] 4 Rear Drive Unit

[0053] 41 Rear drive components

[0054] 42 Rear Connecting Rod

[0055] 5 legs

[0056] 6. Packaging box Detailed Implementation

[0057] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0058] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed in this utility model. The following detailed description should not be considered restrictive, and the scope of the embodiments of this application is limited only by the claims of the published patents. The terminology used herein is for describing specific embodiments only and is not intended to limit this application. Spatial terms such as "upper," "lower," "left," "right," "below," "below," "lower part," "above," "upper part," etc., may be used in the text to illustrate the relationship between one element or feature shown in the figures and another element or feature.

[0059] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "holding" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0060] Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, operation, element, component, item, kind, and / or group, but do not preclude the presence, occurrence, or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition arise only when combinations of elements, functions, or operations are inherently mutually exclusive in some manner.

[0061] like Figures 1 to 6 As shown, this utility model provides a modular electric bed, comprising:

[0062] Bed frame 1, the bed frame 1 includes a front crossbeam 11, a rear crossbeam 12 and two side beam assemblies 13, the side beam assembly 13 includes a side beam 131 and a front rotating rod 132 with one end hinged to the middle of the side beam 131;

[0063] Front drive unit 3, which includes a front drive component 31, a middle support beam 32 and a front connecting rod 33; bed board 2, which includes a front support plate 21;

[0064] In the assembled state, the front crossbeam 11, the rear crossbeam 12, and the two side beams 131 enclose the frame structure of the bed frame 1. The middle support beam 32 is located in the middle of the bed frame 1 and its two ends are respectively connected to the two side beams 131. One end of the front drive member 31 is hinged to the middle support beam 32, and the other end is hinged to the front connecting rod 33. The two ends of the front connecting rod 33 are respectively connected to the other ends of the two front rotating rods 132. The front support plate 21 is located on the front rotating rod 132. The front drive member 31 drives the front connecting rod 33 and causes the front rotating rod 132 to rotate around its hinge point with the side beam 131, thereby making the front support plate 21 in various positions, including the horizontal position. In the horizontal position, the front rotating rod 132 overlaps the side beam 131.

[0065] To better illustrate the modular electric bed of this utility model, the following specific application will be used as an example: In its assembled state, the front crossbeam 11, rear crossbeam 12, and two side beams 131 form the frame structure of the bed frame 1. The central support beam 32 is located in the middle of the bed frame 1 and its two ends are respectively connected to the two side beams 131. One end of the front drive member 31 is hinged to the central support beam 32, and the other end is hinged to the front connecting rod 33. The two ends of the front connecting rod 33 are respectively connected to the other ends of the two front rotating rods 132. The front support plate 21 is disposed on the front rotating rod 132. The front drive member 31 drives the front connecting rod 33 and causes the front rotating rod 132 to rotate around its hinge point with the side beam 131, thereby allowing the front support plate 21 to be in various positions, including a horizontal position, such as... Figure 1 , Figure 2 As shown, in the horizontal position, the front rotating rod 132 overlaps the side beam 131; in the folded state, the components of the bed frame 1 and the front drive unit 3 are stacked on the bed board 2; the modular electric bed of this utility model achieves the pre-assembly of the side beam component 13 through the integration of the rotating structure and the side beam 131, and the structural design of each component takes into account the convenience of the assembly steps and the compactness of the storage and packaging; it can be seen that the modular electric bed of this utility model, through the reasonable planning and combination of various structures, pre-assembles some components without affecting the storage and packaging volume, taking into account the convenience of the assembly steps and the compactness of the storage and packaging, and solves the problems of inconvenient assembly and difficult storage and logistics caused by the multiple components and complex structure in the prior art.

[0066] In some possible embodiments of this utility model, such as Figure 1 , Figure 2As shown, there are two front support plates 21, which are used to provide support for the user's head and back respectively. The two front support plates 21 not only meet the support needs for the user's head and back, but also reduce the storage space by stacking the two front support plates 21, further improving the compactness of the packaging.

[0067] In some possible embodiments of this utility model, such as Figure 1 , Figure 2 As shown, the side beam assembly 13 also includes a rear connecting rod structure 133, which includes a rear rotating rod 133a, a rear transmission rod 133b, and a rear limiting rod 133c. The two ends of the rear transmission rod 133b are respectively hinged to one end of the rear rotating rod 133a and the rear limiting rod 133c, and the other ends of the rear rotating rod 133a and the rear limiting rod 133c are hinged to the side beam 131.

[0068] In some possible embodiments of this utility model, such as Figure 1 , Figure 5 As shown, the modular electric bed also includes a rear drive unit 4, which includes a rear drive component 41 and a rear connecting rod 42. In the assembled state, the two ends of the rear connecting rod 42 are respectively connected to the two rear rotating rods 133a. One end of the rear drive component 41 is hinged to the rear crossbeam 12, and the other end is hinged to the rear connecting rod 42.

[0069] In some possible embodiments of this utility model, the front drive member 31 and the rear drive member 41 are electric actuators. Electric actuators have been widely used in the field of home automation due to their advantages such as precise control, fast response, energy efficiency, low maintenance cost, environmental friendliness, high reliability, easy maintenance, lightweight design and ergonomics, and have become the preferred solution to replace traditional hydraulic or pneumatic systems.

[0070] In some possible embodiments of this utility model, such as Figure 1 , Figure 2 As shown, the bed board 2 also includes a thigh support plate 23 and a calf support plate 24. In the assembled state, the thigh support plate 23 and the calf support plate 24 are respectively disposed on the rear rotating rod 133a and the rear transmission rod 133b. The rear driving member 41 drives the rear connecting rod 42 and drives the rear rotating rod 133a and the rear transmission rod 133b to rotate, thereby making the thigh support plate 23 and the calf support plate 24 in various positions, including a horizontal position. The thigh support plate 23 and the calf support plate 24 provide support for the user's thighs and calves at different angles, which is closer to the user's usage scenario and improves the user experience.

[0071] In some possible embodiments of this utility model, such as Figure 1 , Figure 2 As shown, the bed board 2 also includes a seat support plate 22. In the assembled state, the seat support plate 22 is located in the middle of the side beam 131. In the folded state, the front support plate 21, seat support plate 22, thigh support plate 23 and calf support plate 24 are stacked together flat. In the assembled state, the seat support plate 22 is used to provide support for the user's buttocks and waist.

[0072] In some possible embodiments of this utility model, such as Figure 1 , Figure 2 As shown, the side beam assembly 13 also includes a lifting frame 134, which is disposed in the middle of the side beam 131. The seat support plate 22 is disposed on the lifting frame 134 to ensure that the front support plate 21, seat support plate 22, thigh support plate 23 and calf support plate 24 are horizontal to each other in the horizontal position to meet the user's horizontal lying needs.

[0073] In some possible embodiments of this utility model, such as Figure 1 , Figure 5 As shown, the rear linkage structure 133 also includes an anti-pinch rod 133d, one end of which is hinged to the rear transmission rod 133b. In the assembled state, the calf support plate 24 is fixed to the rear transmission rod 133b by the anti-pinch rod 133d. The anti-pinch rod 133d satisfies the requirement that the calf support plate 24 can provide support through the rear transmission rod 133b and can also rotate freely around one end of the anti-pinch rod 133d, thereby preventing the calf support plate 24 from colliding with surrounding objects or even pinching the user during the rotation driven by the rear drive unit 4.

[0074] In some possible embodiments of this utility model, such as Figure 1 , Figure 2As shown, front side plates 111 are respectively provided at both ends of the front crossbeam 11. In the assembled state, the side beam 131 overlaps the front crossbeam 11, and its inner side is in contact with the front side plate 111. The side beam 131 is connected to the front crossbeam 11 by fixing it to the front side plate 111. Similarly, in this embodiment, rear side plates 121 are respectively provided at both ends of the rear crossbeam 12. In the assembled state, the side beam 131 overlaps the rear crossbeam 12, and its inner side is in contact with the rear side plate 121. The side beam 131 is connected to the rear crossbeam 12 by fixing it to the rear side plate 121. Middle support beam 32 is respectively provided at both ends of the middle support beam 32. In the assembled state, the side beam 131 overlaps the middle support beam 32, and its outer side is in contact with the middle side plate 321. The side beam 131 is connected to the middle support beam 32 by fixing it to the middle side plate 321.

[0075] In some possible embodiments of this utility model, such as Figure 1 , Figure 2 As shown, the modular electric bed also includes a leg assembly; in the assembled state, the leg assembly includes multiple legs 5 disposed at the bottom of the bed frame 1; in the folded state, the legs 5 are arranged side by side on one side of the short side of the bed board 2 to accommodate the length of the side beam 131.

[0076] In some possible embodiments of this utility model, such as Figure 1 , Figure 2 As shown, the outrigger assembly includes six outriggers 5. One end of each outrigger 5 is provided with a threaded post. The bottom of both ends of the front crossbeam 11, the rear crossbeam 12, and the middle support beam 32 are provided with threaded holes that are compatible with the threaded posts. In the assembled state, one end of the outrigger 5 is screwed into the threaded hole. In this way, the outrigger 5 can be installed without the aid of installation tools.

[0077] More specifically, in some possible embodiments of this utility model, such as Figure 3 , Figure 4 As shown, it also includes a packaging box 6. In the storage state, the seat support plate 22, thigh support plate 23, calf support plate 24 and two front support plates 21 are stacked at the bottom of the packaging box 6. The side beam assembly 13, front crossbeam 11, rear crossbeam 12, front drive component 31, middle support beam 32, front connecting rod 33, rear drive component 41 and rear connecting rod 42 are placed on the upper side of the bed board 2. The side beam 131 requires a relatively long length. In order to meet the packaging requirements, the overall length of the packaging is longer than the width of the bed board 2. At the same time, in order to utilize the space on one side of the bed board 2, the six support legs 5 are placed side by side on one side of the short side of the stacked bed board 2.

[0078] In summary, the modular electric bed of this invention has the following advantages:

[0079] 1. Modular design: The modular design of the electric bed is achieved through pre-assembled side beam components 13 and reasonable structural planning, which facilitates assembly and maintenance.

[0080] 2. High space utilization: The components are stacked and stored, which optimizes space utilization, making the packaging more compact and facilitating logistics and transportation.

[0081] 3. Easy to operate: The design of the front drive unit 3 and the rear drive unit 4 simplifies the assembly steps, making the assembly and adjustment of the electric bed easier.

[0082] 4. Multifunctional support: The combination of the front support plate 21, thigh support plate 23, calf support plate 24 and seat support plate 22 provides multiple position adjustments to meet the needs of different users.

[0083] 5. Electric linear actuator application: Using electric linear actuators as the drive unit has the advantages of precise control, fast response and low maintenance cost.

[0084] 6. Anti-pinch design: The rear linkage structure 133 includes an anti-pinch rod 133d, which improves the safety of use and avoids injury to the user.

[0085] 7. Tool-free installation: The outrigger assembly is designed to allow for tool-free installation, improving convenience.

[0086] 8. Optimized packaging design: The design of Box 6 makes full use of space, allowing all components to be placed neatly for easy storage and transportation.

[0087] This patented modular electric bed achieves rapid assembly and efficient space utilization through its innovative modular design. The pre-assembled side beam assembly 13 and rational structural planning simplify the assembly process while ensuring ease of assembly and compact packaging. The application of electric push rods provides precise control and efficient driving force, while the multi-functional support plate design meets the support needs of different users. The addition of the anti-pinch rod 133d improves safety, and the tool-free installation of the support leg assembly further enhances convenience. Optimized packaging design allows all components to be neatly placed, facilitating storage and transportation. Overall, this patented electric bed design, through its unique structure and function, solves the problems of inconvenient assembly and difficult storage and logistics caused by the complex structure of multiple components in existing technologies, providing users with an efficient, safe, and easy-to-operate electric bed solution.

[0088] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0089] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A modular, interlocking electric bed, characterized in that, include: The bed frame (1) includes a front crossbeam (11), a rear crossbeam (12) and two side beam assemblies (13), the side beam assembly (13) including a side beam (131) and a front rotating rod (132) with one end hinged to the middle of the side beam (131); The front drive unit (3) includes a front drive component (31), a middle support beam (32), and a front connecting rod (33); Bed board (2), the bed board (2) including front support plate (21); In the assembled state, the front crossbeam (11), the rear crossbeam (12), and the two side beams (131) enclose the frame structure of the bed frame (1). The middle support beam (32) is located in the middle of the bed frame (1) and its two ends are respectively connected to the two side beams (131). One end of the front drive member (31) is hinged to the middle support beam (32), and the other end is hinged to the front connecting rod (33). The two ends of the front connecting rod (33) are respectively connected to the other ends of the two front rotating rods (132). The front support plate (21) is located on the front rotating rod (132). The front drive member (31) drives the front connecting rod (33) and causes the front rotating rod (132) to rotate around its hinge point with the side beam (131), thereby making the front support plate (21) in various positions, including the horizontal position. In the horizontal position, the front rotating rod (132) overlaps the side beam (131).

2. The modular electric bed according to claim 1, characterized in that: The side beam assembly (13) further includes a rear linkage structure (133), which includes a rear rotating rod (133a), a rear transmission rod (133b), and a rear limiting rod (133c). The two ends of the rear transmission rod (133b) are respectively hinged to one end of the rear rotating rod (133a) and the rear limiting rod (133c), and the other ends of the rear rotating rod (133a) and the rear limiting rod (133c) are hinged to the side beam (131).

3. The modular electric bed according to claim 2, characterized in that: The combined electric bed also includes a rear drive unit (4), which includes a rear drive component (41) and a rear connecting rod (42). In the assembled state, the two ends of the rear connecting rod (42) are respectively connected to the two rear rotating rods (133a). One end of the rear drive component (41) is hinged to the rear crossbeam (12), and the other end is hinged to the rear connecting rod (42).

4. The modular electric bed according to claim 3, characterized in that: The bed board (2) also includes a thigh support plate (23) and a calf support plate (24). In the assembled state, the thigh support plate (23) and the calf support plate (24) are respectively disposed on the rear rotating rod (133a) and the rear transmission rod (133b). The rear driving member (41) drives the rear connecting rod (42) and drives the rear rotating rod (133a) and the rear transmission rod (133b) to rotate, thereby making the thigh support plate (23) and the calf support plate (24) in various positions, including the horizontal position.

5. The modular electric bed according to claim 4, characterized in that: The bed board (2) also includes a seat support plate (22). In the assembled state, the seat support plate (22) is located in the middle of the side beam (131). In the stored state, the front support plate (21), seat support plate (22), thigh support plate (23) and calf support plate (24) are laid flat and stacked together.

6. The modular electric bed according to claim 5, characterized in that: The side beam assembly (13) also includes a lifting frame (134), which is located in the middle of the side beam (131). The seat support plate (22) is located on the lifting frame (134) to ensure that the front support plate (21), seat support plate (22), thigh support plate (23) and calf support plate (24) are horizontal to each other in the horizontal position.

7. The modular electric bed according to claim 4, characterized in that: The rear connecting rod structure (133) also includes an anti-pinch rod (133d), one end of which is hinged to the rear transmission rod (133b). In the assembled state, the lower leg support plate (24) is fixed to the rear transmission rod (133b) by the anti-pinch rod (133d). The anti-pinch rod (133d) satisfies the requirement that the lower leg support plate (24) can provide support through the rear transmission rod (133b) and can also rotate freely around one end of the anti-pinch rod (133d).

8. The modular electric bed according to claim 1, characterized in that: The front crossbeam (11) has front side plates (111) at both ends. In the assembled state, the side beam (131) overlaps the front crossbeam (11) and fits against the front side plate (111). The side beam (131) is fixed to the front side plate (111) to achieve connection with the front crossbeam (11).

9. The modular electric bed according to claim 1, characterized in that: The modular electric bed also includes a leg assembly; in the assembled state, the leg assembly includes multiple legs (5) set at the bottom of the bed frame (1), and in the stowed state, the legs (5) are arranged side by side on one side of the short side of the bed board (2).

10. The modular electric bed according to claim 9, characterized in that: The support leg assembly includes six support legs (5). One end of each of the six support legs (5) is provided with a threaded post. The bottom of both ends of the front crossbeam (11), the rear crossbeam (12) and the middle support beam (32) are provided with threaded holes that are compatible with the threaded posts. In the assembled state, one end of the support leg (5) is screwed into the threaded hole.

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