Bed structure and electric bed including same

Abstract

The utility model discloses a bed structure and electric bed utensils including it. Bed structure includes: bottom frame, back bed board articulates in bottom frame, head bed board articulates in back bed board, first drive arrangement is set between bottom frame and back bed board, and first drive arrangement can drive back bed board relative to bottom frame rotation, linkage structure is set between first drive arrangement, back bed board and head bed board, and back bed board can drive head bed board through linkage structure linkage when rotating to make head bed board relative to back bed board rotation. Thus, through setting linkage structure, only using a first drive arrangement can drive back bed board and head bed board rotation, and the number of drive arrangement is reduced, and the whole structure is simplified, and the layout of each component of bed structure is more compact in this simplification, saves the inside space of bed body, and more possibilities are provided for the other function design or internal circuit arrangement of bed.

Description

Technical Field

[0001] This utility model belongs to the field of furniture technology, specifically relating to bed structure and electric bed including the same. Background Technology

[0002] Chinese Patent Publication No. CN213640293U discloses a head adjustment assembly, a bed frame, and a folding bed. This head adjustment assembly is applied to a folding bed, which includes a bottom frame, a hinged headboard, and a backboard. The head adjustment assembly includes an adjustment structure, a first driving device, and a second driving device. The adjustment structure is movably connected to both the bottom frame and the backboard. One end of the first driving device is rotatably connected to the bottom frame, and the other end is rotatably connected to the adjustment structure, enabling the backboard to rotate relative to the bottom frame. One end of the second driving device is rotatably connected to the backboard, and the other end is rotatably connected to the headboard, enabling the headboard to rotate relative to the backboard. The backboard has a first receiving cavity and a second receiving cavity. When the backboard is horizontal, the first driving device is partially located in the first receiving cavity; when the headboard and backboard are on the same plane, the second driving device is located in the second receiving cavity. However, this head adjustment assembly has obvious drawbacks. It requires two drive units to drive the headboard and backboard respectively. This not only increases the complexity of the structure, making the internal layout of the bed less compact and taking up more space, which is not conducive to the design of other functions of the bed or the layout of internal wiring, but also increases the cost of raw material procurement and production, reducing the cost-effectiveness and market competitiveness of the product. Utility Model Content

[0003] In order to overcome at least one of the defects described in the prior art, the present invention provides a bed structure and an electric bed including the bed structure, so as to solve the problems of complex structure, high cost, low reliability, inconvenience of use and high maintenance cost caused by the need for two drive devices to drive the head plate and the back plate respectively in the prior art.

[0004] The technical solution adopted by this utility model to solve its problem is: A bed structure includes: a bottom frame; a backrest board hinged to the bottom frame; a headrest board hinged to the backrest board; a first drive device disposed between the bottom frame and the backrest board, the first drive device being capable of driving the backrest board to rotate relative to the bottom frame; and a linkage structure disposed between the first drive device, the backrest board, and the headrest board, wherein when the backrest board rotates, the linkage structure can link the headrest board to rotate relative to the backrest board.

[0005] As an optional implementation, the first driving device includes a first driving member, a connecting rod, and two back supports arranged side by side. The two ends of the connecting rod are respectively fixedly connected to the two back supports. The first end of the back support is slidably connected to the back bed board, and the second end of the back support is hinged to the bottom frame. The first driving member is drivenly connected to the connecting rod. The first driving member acts on the connecting rod to make the back support rotate relative to the bottom frame, thereby causing the first end of the back support to drive the back bed board to rotate.

[0006] As an optional implementation, the linkage structure includes a first transmission rod, a second transmission rod, and a third transmission rod; the first end of the first transmission rod is hinged to the connecting rod, and the second end of the first transmission rod is hinged to the first end of the second transmission rod; the first end of the third transmission rod is hinged to the second end of the second transmission rod, and the second end of the third transmission rod is hinged to the headboard; and the second transmission rod is also hinged to the backboard, with the hinge point between the second transmission rod and the backboard located between the two ends of the second transmission rod.

[0007] As an optional implementation, the backrest bed board is provided with a first hinge seat for hinged to the second transmission rod, and / or the headrest bed board is provided with a second hinge seat for hinged to the second end of the third transmission rod.

[0008] As an optional implementation, a first included angle is formed between the second transmission rod and the third transmission rod, facing away from the backrest bed board; when the backrest bed board rotates and gradually rises under the drive of the first driving device, the first transmission rod rotates and gradually rises relative to the connecting rod. Under the drive of the backrest bed board and the first transmission rod, the first included angle gradually increases so that the headrest bed board gradually rotates in the direction away from the first included angle.

[0009] As an optional implementation, both the second transmission rod and the third transmission rod are in an arc shape that is recessed toward the back of the bed board.

[0010] As an optional implementation, the backrest bed board is provided with a first receiving cavity and a second receiving cavity. The first driving member includes a first driving motor and a first connecting rod that are connected by transmission. One of the first driving motor and the first connecting rod is hinged to the connecting rod, and the other is hinged to the bottom frame. The first driving motor can drive the first connecting rod to perform telescopic movement. When the backrest bed board and the headrest bed board are kept horizontal, the first driving motor part is located in the first receiving cavity, and the first connecting rod part is located in the second receiving cavity.

[0011] This utility model also provides an electric bed, including the bed structure as described above, and a legboard, which is disposed on the bottom frame.

[0012] As an optional implementation, the electric bed further includes a second drive device disposed between the leg bed board and the bottom frame, the second drive device being used to drive the leg bed board to rotate relative to the bottom frame.

[0013] As an optional implementation, the leg bed board includes a first bed board and a second bed board that are hinged to each other. The first bed board is also hinged to the bottom frame. The second drive device is disposed between the bottom frame and the first bed board and is used to drive the first bed board to rotate relative to the bottom frame. The electric bed also includes a support rod, the first end of which is hinged to the bottom frame and the second end of which is hinged to the second bed board.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up a linkage structure, only one first drive device is needed to drive the backrest and headrest to rotate, reducing the number of drive devices and simplifying the overall structure. This simplification makes the layout of the various components of the bed structure more compact, saves internal space of the bed, and provides more possibilities for the design of other functions of the bed or the layout of internal wiring. Furthermore, reducing the use of one drive device means a decrease in overall manufacturing costs. At the same time, the simplification of the structure also reduces the assembly difficulty and labor costs in the production process. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an electric bed (headboard, backboard, and legs are all horizontal) according to an embodiment of this application. Figure 2 This is a schematic diagram of the structure of an electric bed (headboard and backboard linked to a first posture) according to an embodiment of this application; Figure 3 This is a structural schematic diagram of an electric bed (with the headboard and backboard linked to a second posture) according to an embodiment of this application; Figure 4This is a schematic diagram of the bed structure (both the headboard and the backboard are horizontal) according to an embodiment of this application. Figure 5 This is a schematic diagram of the bed structure (headboard and backboard linked to a first posture) according to an embodiment of this application; Figure 6 This is a schematic diagram of the bed structure (headboard and backboard linked to the second posture) according to an embodiment of this application.

[0017] Explanation of key figure labels: 1. Bottom frame; 2. Backrest board; 21. First receiving cavity; 22. Second receiving cavity; 3. Headrest board; 4. First drive device; 41. First drive component; 411. First drive motor; 412. First linkage rod; 42. Connecting rod; 43. Backrest support; 431. Roller body; 44. Diagonal brace; 5. Linkage structure; 51. First transmission rod; 52. Second transmission rod; 53. Third transmission rod; 6. First hinge seat; 7. Second hinge seat; 8. Second drive device; 81. Second drive motor; 82. Second linkage rod; 9. Legrest board; 91. First bed board; 92. Second bed board; 10. Support rod. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0020] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0021] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0022] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0023] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0024] Please see Figures 1 to 6 This application provides a bed structure including a bottom frame 1, a backrest board 2, a headrest board 3, a first drive device 4, and a linkage structure 5. The backrest board 2 is hinged to the bottom frame 1; the headrest board 3 is hinged to the backrest board 2; the first drive device 4 is disposed between the bottom frame 1 and the backrest board 2, and the first drive device 4 can drive the backrest board 2 to rotate relative to the bottom frame 1; the linkage structure 5 is disposed between the first drive device 4, the backrest board 2, and the headrest board 3, and when the backrest board 2 rotates, it can link the headrest board 3 through the linkage structure 5 to make the headrest board 3 rotate relative to the backrest board 2.

[0025] The bed structure provided in this application embodiment, by setting a linkage structure 5, can drive the backrest bed board 2 and headrest bed board 3 to rotate using only a first drive device 4, reducing the number of drive devices and simplifying the overall structure. This simplification makes the layout of each component of the bed structure more compact, saves internal space of the bed, and provides more possibilities for other functional designs or internal wiring layout of the bed. Furthermore, reducing the use of one drive device means a decrease in overall manufacturing cost. At the same time, the simplification of the structure also reduces the assembly difficulty and labor cost in the production process.

[0026] like Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, in one embodiment, the first driving device 4 includes a first driving member 41, a connecting rod 42, and two back supports 43 arranged side by side. The two ends of the connecting rod 42 are fixedly connected to the two back supports 43 respectively. The first end of the back support 43 is slidably connected to the backrest bed board 2, and the second end of the back support 43 is hinged to the bottom frame 1. The first driving member 41 is drively connected to the connecting rod 42. The first driving member 41 acts on the connecting rod 42 to cause the back support 43 to rotate relative to the bottom frame 1, thereby causing the first end of the back support 43 to drive the backrest bed board 2 to rotate. Thus, on the one hand, by precisely controlling the movement of the connecting rod 42 through the first driving member 41, and thereby driving the back support 43 to drive the backrest bed board 2 to rotate, the angle of the backrest bed board 2 can be precisely adjusted. Users can adjust the backrest bed board 2 to the most comfortable angle according to their needs, finding a suitable posture whether reading, watching TV, or resting, thus improving user comfort and experience. Secondly, the first driving component 41, through its transmission connection with the connecting rod 42, can directly transmit power to the connecting rod 42, thereby driving the two back supports 43 to rotate. This transmission method reduces intermediate links in the power transmission process, lowers energy loss, and improves driving efficiency. Thirdly, the two side-by-side back supports 43 provide a wider and more stable support surface for the backrest bed board 2. Compared to a single support structure, this layout can better distribute the pressure borne by the backrest bed board 2, including the weight exerted on the backrest bed board 2 when the human body is lying down or sitting up, as well as the dynamic stress generated by the rotation of the bed board.

[0027] like Figure 5 As shown, in one embodiment, an inclined brace 44 connects the back support 43 and the connecting rod 42. Thus, the inclined brace 44, connected at an angle between the back support 43 and the connecting rod 42, forms a stable triangular mechanical structure. During use of the electric bed, when the back support 43 bears the weight of the human body or other external forces, the inclined brace 44 can distribute these forces to the connecting rod 42, preventing the force from concentrating on a localized area of ​​the back support 43. This greatly enhances the load-bearing capacity of the back support 43, enabling it to withstand greater weight without deformation or damage.

[0028] like Figure 5 and Figure 6 As shown, in one embodiment, a roller 431 is provided at the first end of the back support 43, and the back support 43 is slidably connected to the backrest bed board 2 through the roller 431. Thus, the roller 431 transmits power through rolling during movement, converting sliding friction into rolling friction, reducing the frictional resistance between the back support 43 and the backrest bed board 2. This makes it easier and smoother for the backrest bed board 2 to adjust its angle or perform other movements, allowing the user to clearly feel the smoothness of the operation without any stuttering or obstruction.

[0029] like Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, in one embodiment, the linkage structure 5 includes a first transmission rod 51, a second transmission rod 52, and a third transmission rod 53; the first end of the first transmission rod 51 is hinged to the connecting rod 42, and the second end of the first transmission rod 51 is hinged to the first end of the second transmission rod 52; the first end of the third transmission rod 53 is hinged to the second end of the second transmission rod 52, and the second end of the third transmission rod 53 is hinged to the headboard 3; and the second transmission rod 52 is also hinged to the backboard 2, with the hinge point between the two ends of the second transmission rod 52 located between the two ends of the second transmission rod 52. Thus, firstly, the linkage structure 5, formed by the sequential hinged connection of the first transmission rod 51, the second transmission rod 52, and the third transmission rod 53, can accurately and efficiently transmit the movement of the connecting rod 42 to the headboard 3. When the connecting rod 42 moves, the first transmission rod 51 swings accordingly, which drives the second transmission rod 52 to move. The second transmission rod 52 then transmits power to the headboard 3 through the third transmission rod 53, realizing the corresponding movement of the headboard 3. This multi-stage hinged transmission method reduces power loss during transmission and ensures that movement commands can be executed accurately and promptly. Secondly, this linkage structure 5 enables the movement of the headboard 3 to coordinate with the movement of the backboard 2. Since the second transmission rod 52 is hinged to the backboard 2, when the backboard 2 rotates, it will cause the second transmission rod 52 to undergo a certain movement change, which in turn affects the movement trajectory and angle of the headboard 3 through the third transmission rod 53. This complex coordinated movement can simulate the posture changes of a human body when lying naturally, providing users with a more comfortable and ergonomic user experience. Thirdly, the linkage structure 5 adopts a multi-stage transmission rod hinge design, which is compact and occupies less space. Each transmission rod can be reasonably arranged according to actual needs, making full use of the limited space inside the bed. Compared with the traditional complex transmission mechanism, this design does not require additional large transmission components or complex mechanical structures. Under the premise of ensuring the realization of functions, it can leave more installation space for other functional modules of the bed (such as storage space, electric massage device, etc.), thereby improving the overall space utilization of the bed.

[0030] It should be noted that in some other embodiments, the linkage structure 5 may also be, but is not limited to, a gear and rack structure or a chain structure, etc., whichever is selected according to actual needs.

[0031] like Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, in one embodiment, the backrest board 2 is provided with a first hinge seat 6 for hinged to the second transmission rod 52, and the headrest board 3 is provided with a second hinge seat 7 for hinged to the second end of the third transmission rod 53. Thus, the first hinge seat 6 and the second hinge seat 7 can evenly distribute the weight of the backrest board 2 and the headrest board 3, as well as the forces generated during movement, onto the transmission rod and the bed structure. This avoids structural damage caused by excessive localized stress and extends the service life of the bed.

[0032] like Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, in one embodiment, a first angle is formed between the second transmission rod 52 and the third transmission rod 53, facing away from the backrest bed board 2. When the backrest bed board 2 rotates and gradually rises under the drive of the first drive device 4, the first transmission rod 51 rotates and gradually rises relative to the connecting rod 42. Driven by the backrest bed board 2 and the first transmission rod 51, the first angle gradually increases, causing the headrest bed board 3 to gradually rotate in the direction away from the first angle. Therefore, the second angle formed between the backrest bed board 2 and the headrest bed board 3 gradually decreases. Conversely, when the backrest bed board 2 rotates and gradually lowers under the drive of the first drive device 4, the first transmission rod 51 rotates and gradually lowers relative to the connecting rod 42. Driven by the backrest bed board 2 and the first transmission rod 51, the first angle gradually decreases, causing the headrest bed board 3 to rotate relative to the backrest bed board 2. Therefore, the second angle formed between the backrest bed board 2 and the headrest bed board 3 gradually increases until they become parallel. Thus, firstly, as the backrest board 2 gradually rises under the drive of the first drive device 4, the first angle between the second transmission rod 52 and the third transmission rod 53 gradually increases, causing the headrest board 3 to gradually rotate in the direction of the first angle, and the second angle between the backrest board 2 and the headrest board 3 gradually decreases. This movement simulates the change in the angle of the head and back when the human body naturally sits up from a lying position, allowing the bed to better conform to the curve of the human body, providing users with ergonomic support, reducing pressure on various parts of the body, and reducing fatigue and discomfort caused by unnatural posture. Secondly, when the backrest 2 is lowered, the first angle gradually decreases, and the headrest 3 rotates relative to the backrest 2, causing the second angle to gradually increase until they are parallel. This position is suitable for users to lie flat and rest or sleep, providing a flat and comfortable sleeping surface and reducing discomfort caused by the angle difference between the head and back, thus improving sleep quality. Simultaneously, when the user needs to transition from a sleeping state to a sitting position, the first drive device 4 raises the backrest 2, and the headrest 3 adjusts accordingly to a suitable angle, facilitating the user's ascent. Thirdly, as the backrest 2 gradually rises or falls, the changes in the first and second angles are continuous, and the rotation angle of the headrest 3 also changes continuously. This continuous angle change prevents users from experiencing significant angle abrupt changes during use, allowing them to adapt more naturally to the angle adjustment of the bed, further enhancing comfort and convenience.

[0033] like Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, in one embodiment, both the second transmission rod 52 and the third transmission rod 53 are arc-shaped, recessed towards the backrest bed board 2. Thus, firstly, given the limited internal space of the bed, the arc-shaped second transmission rod 52 and third transmission rod 53 can better adapt to complex spatial environments. Their curved shape can cleverly bypass other components. Furthermore, the arc-shaped transmission rods allow for more flexible adjustment of position and angle during installation, reducing installation difficulty. Simultaneously, during later maintenance, the arc design makes the relative positional relationships between components clearer, allowing maintenance personnel to more easily inspect, clean, lubricate, and replace the transmission rods, improving maintenance efficiency. Secondly, during the movement of the linkage structure 5, interference may occur between the components due to relative motion. The arc-shaped design provides greater space margin for the movement between the transmission rods, reducing the probability of collisions or jamming during movement. Furthermore, the arc-shaped structure has better mechanical properties, which can distribute the force more evenly across the entire rod. During the movement of the headboard 3 and the backboard 2, the transmission rods will be subjected to tensile, compressive, and bending forces from different directions. The arc-shaped design can avoid stress concentration in a local area, reducing the risk of rod breakage or deformation, thereby enhancing the load-bearing capacity and stability of the entire linkage structure 5 and extending its service life.

[0034] In one embodiment, the backrest bed board 2 is provided with a first receiving cavity 21 and a second receiving cavity 22. The first driving component 41 includes a first driving motor 411 and a first connecting rod 412 connected by transmission. One of the first driving motor 411 and the first connecting rod 412 is hinged to a connecting rod 42, and the other is hinged to the bottom frame 1. When the backrest bed board 2 and the headrest bed board 3 are kept horizontal, the first driving motor 411 is partially located in the first receiving cavity 21, and the first connecting rod 412 is partially located in the second receiving cavity 22. In this way, by placing the first driving motor 411 and the first connecting rod 412 in specific receiving cavities, the internal structure of the bed is made more compact and orderly. The layout between the components is more reasonable, reducing space waste and mutual interference caused by messy placement of components, improving space utilization, and facilitating subsequent maintenance and repair work.

[0035] It should be noted that in some other embodiments, the first driving component 41 may also be, but is not limited to, a device that can provide power, such as a cylinder. The choice can be made according to actual needs, and no single limitation is made here.

[0036] In addition, this utility model also provides an electric bed, including the bed structure as described in any of the above embodiments, and a legboard 9, which is disposed on the bottom frame 1. Thus, in addition to the backrest 2 and headrest 3 being adjustable in angle, the legboard 9 allows for more comprehensive body posture adjustment. Users can raise or lower the legboard 9 according to their needs, coordinating with the movements of the backrest and headrest 3 to achieve various comfortable postures such as sitting, semi-reclining, and lying flat, meeting the needs of users in different scenarios such as resting, reading, watching TV, and sleeping, greatly enhancing the richness and comfort of the user experience.

[0037] In one embodiment, the electric bed further includes a second drive device 8, which is disposed between the leg rest 9 and the bottom frame 1. The second drive device 8 is used to drive the leg rest 9 to rotate relative to the bottom frame 1. Thus, firstly, the second drive device 8 can independently control the rotation of the leg rest 9, achieving precise angle adjustment. Users can adjust the leg rest 9 to any comfortable angle according to their needs, whether slightly raising it to relieve leg fatigue or significantly raising it to simulate a sitting posture. This precise adjustment function meets the personalized needs of different users in different scenarios, such as reading, watching TV, resting, or performing leg rehabilitation training. Secondly, the second drive device 8 is reasonably positioned between the leg rest 9 and the bottom frame 1, making full use of the internal space of the bed. This compact design avoids exposing the drive device, making the overall structure of the electric bed simpler and more aesthetically pleasing. It also reduces interference between the drive device and other components, improves the utilization rate of the internal space of the bed, and leaves more space for the installation of other functional components.

[0038] In one embodiment, the legrest bed 9 includes a first bed board 91 and a second bed board 92 hinged together. The first bed board 91 is also hinged to a bottom frame 1. A second drive device 8 is disposed between the bottom frame 1 and the first bed board 91, and is used to drive the first bed board 91 to rotate relative to the bottom frame 1. The electric bed also includes a support rod 10, with its first end hinged to the bottom frame 1 and its second end hinged to the second bed board 92. Thus, since the legrest bed 9 is composed of the first bed board 91 and the second bed board 92 hinged together, when the second drive device 8 drives the first bed board 91 to rotate relative to the bottom frame 1, the first bed board 91 will drive the second bed board 92 to move together. At the same time, the presence of the support rod 10 allows the second bed board 92 to undergo a certain angular change relative to the first bed board 91 during movement. This design allows the leg support board 9 to be adjusted to multiple angles, not only raising or lowering the legs as a whole, but also adjusting the bending angle of the lower legs as needed, providing users with a wider range of personalized leg support postures to meet the needs of different users in different scenarios.

[0039] In one embodiment, the second drive device 8 includes a second drive motor 81 and a second linkage rod. The second drive motor 81 can drive the second linkage rod to perform telescopic movements. One of the second drive motor 81 and the second linkage rod is hinged to the bottom frame 1, and the other is hinged to the first bed board 91.

[0040] It should be noted that in some other embodiments, the second drive device 8 may also include, but is not limited to, drive devices such as cylinders. The choice can be made according to actual needs, and no single limitation is made here.

[0041] In summary, the bed structure and electric bed including the present invention disclosed herein can bring at least the following beneficial technical effects: (1) By setting up the linkage structure 5, only one first drive device 4 is needed to drive the backrest board 2 and the headrest board 3 to rotate, reducing the number of drive devices and simplifying the overall structure. This simplification makes the layout of each component of the bed structure more compact, saves internal space of the bed, and provides more possibilities for other functional designs or internal wiring layout of the bed; (2) The linkage structure 5 adopts a multi-stage transmission rod hinge design, which is compact and occupies less space. Each transmission rod can be reasonably arranged according to actual needs, making full use of the limited space inside the bed body, leaving more installation space for other functional modules of the bed, and improving the overall space utilization of the bed. (3) As the backrest bed board 2 gradually rises or falls, the first angle between the second transmission rod 52 and the third transmission rod 53 and the second angle between the backrest bed board 2 and the headrest bed board 3 will change accordingly, simulating the change in the angle of the head and back when the human body naturally sits up from a lying position or changes from a sitting position to a lying position, providing users with ergonomic support. (4) The second drive device 8 is reasonably set between the leg bed board 9 and the bottom frame 1, making full use of the space inside the bed, avoiding the exposure of the drive device, making the overall structure of the electric bed simpler and more beautiful, while also reducing the interference between the drive device and other components, improving the utilization rate of the space inside the bed, and reserving more space for the installation of other functional components.

[0042] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A bed structure, characterized in that, include: Bottom frame (1); The backrest (2) is hinged to the bottom frame (1); The headboard (3) is hinged to the backboard (2); A first driving device (4) is disposed between the bottom frame (1) and the backrest bed board (2). The first driving device (4) can drive the backrest bed board (2) to rotate relative to the bottom frame (1). The linkage structure (5) is disposed between the first drive device (4), the back bed board (2) and the head bed board (3). When the back bed board (2) rotates, it can link the head bed board (3) through the linkage structure (5) so that the head bed board (3) rotates relative to the back bed board (2).

2. The bed structure according to claim 1, characterized in that, The first driving device (4) includes a first driving member (41), a connecting rod (42), and two back supports (43) arranged side by side. The two ends of the connecting rod (42) are fixedly connected to the two back supports (43) respectively. The first end of the back support (43) is slidably connected to the back bed board (2), and the second end of the back support (43) is hinged to the bottom frame (1). The first driving member (41) is connected to the connecting rod (42) in a transmission manner. The first driving member (41) acts on the connecting rod (42) to make the back support (43) rotate relative to the bottom frame (1), thereby causing the first end of the back support (43) to drive the back bed board (2) to rotate.

3. The bed structure according to claim 2, characterized in that, The linkage structure (5) includes a first transmission rod (51), a second transmission rod (52), and a third transmission rod (53); the first end of the first transmission rod (51) is hinged to the connecting rod (42), and the second end of the first transmission rod (51) is hinged to the first end of the second transmission rod (52); the first end of the third transmission rod (53) is hinged to the second end of the second transmission rod (52), and the second end of the third transmission rod (53) is hinged to the headboard (3); and the second transmission rod (52) is also hinged to the backboard (2), and the hinge point between the second transmission rod (52) and the backboard (2) is located between the two ends of the second transmission rod (52).

4. The bed structure according to claim 3, characterized in that, The backrest bed board (2) is provided with a first hinge seat (6) for hinged to the second transmission rod (52), and / or the headrest bed board (3) is provided with a second hinge seat (7) for hinged to the second end of the third transmission rod (53).

5. The bed structure according to claim 3, characterized in that, A first angle is formed between the second transmission rod (52) and the third transmission rod (53) facing away from the backrest bed board (2); when the backrest bed board (2) rotates and gradually rises under the drive of the first drive device (4), the first transmission rod (51) rotates and gradually rises relative to the connecting rod (42). Under the drive of the backrest bed board (2) and the first transmission rod (51), the first angle gradually increases so that the headrest bed board (3) gradually rotates in the direction away from the first angle.

6. The bed structure according to claim 5, characterized in that, The second transmission rod (52) and the third transmission rod (53) are both arc-shaped and concave towards the back bed board (2).

7. The bed structure according to any one of claims 2-6, characterized in that, The backrest bed board (2) is provided with a first receiving cavity (21) and a second receiving cavity (22). The first driving member (41) includes a first driving motor (411) and a first connecting rod (412) connected by transmission. One of the first driving motor (411) and the first connecting rod (412) is hinged to the connecting rod (42), and the other is hinged to the bottom frame (1). The first driving motor (411) can drive the first connecting rod (412) to perform telescopic movement. When the backrest bed board (2) and the headrest bed board (3) are kept horizontal, the first driving motor (411) is partially located in the first receiving cavity (21), and the first connecting rod (412) is partially located in the second receiving cavity (22).

8. An electric bed, characterized in that, The bed structure includes any one of claims 1-7, and further includes a legboard (9) disposed on the bottom frame (1).

9. The electric bed according to claim 8, characterized in that, The electric bed also includes a second drive device (8), which is disposed between the leg bed board (9) and the bottom frame (1). The second drive device (8) is used to drive the leg bed board (9) to rotate relative to the bottom frame (1).

10. The electric bed according to claim 9, characterized in that, The leg bed board (9) includes a first bed board (91) and a second bed board (92) that are hinged to each other. The first bed board (91) is also hinged to the bottom frame (1). The second drive device (8) is disposed between the bottom frame (1) and the first bed board (91). The second drive device (8) is used to drive the first bed board (91) to rotate relative to the bottom frame (1). The electric bed also includes a support rod (10). The first end of the support rod (10) is hinged to the bottom frame (1), and the second end of the support rod (10) is hinged to the second bed board (92).

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