A lifting bed

Abstract

The application discloses a lifting bed, which comprises a bed plate assembly and a counterweight assembly. The bed plate assembly comprises a first bed plate and a second bed plate, and the first bed plate is hinged to the second bed plate. The counterweight assembly comprises a first counterweight structure and a second counterweight structure, and the first counterweight structure is connected to the first bed plate, and the second counterweight structure is connected to the second bed plate. In the application, when the first counterweight structure and the second counterweight structure are in a high position, the first bed plate and the second bed plate are in a low position, and the lifting bed is used as a common bed body. When the first counterweight structure is in the high position and the second counterweight structure is in the low position, the second bed plate rotates relative to the first bed plate, so that the lifting bed is used as a sofa to adapt to the sitting posture of a user. When the first counterweight structure and the second counterweight structure are both in the low position, the first bed plate and the second bed plate are both in the high position, and the lifting bed is used as a hammock. The lifting bed can meet the sitting postures and lying postures of different users.

Description

Technical Field

[0001] This application relates to the field of furniture, and more particularly to a lift-up bed. Background Technology

[0002] Lift-type beds using pulleys typically only have the function of raising and lowering the bed board to accommodate the user's height and ensure ease of getting in and out of bed. For example, Chinese patent document CN107174044A discloses an electric lift bed in which the counterweight is flexibly connected to the bed body via steel wire ropes. When the height of the bed body changes, the height of the counterweight also changes accordingly. Under the constraint of the counterweight, the bed body can maintain a preset height.

[0003] However, these types of adjustable beds have limited functionality. Currently, people often need to use electronic devices, read, or engage in other entertainment activities in bed, and sitting is more convenient for these activities. When users need to sit in bed, the bed board remains flat, eliminating the need for a backrest and reducing comfort. Summary of the Invention

[0004] To solve at least one of the above-mentioned technical problems, this application provides a lifting bed, the technical solution of which is as follows:

[0005] This application provides a liftable bed, which includes a bed board assembly and a counterweight assembly. The bed board assembly includes a first bed board and a second bed board, which are hinged together. The counterweight assembly includes a first counterweight structure and a second counterweight structure, which are connected to the first bed board and the second counterweight structure is connected to the second bed board. When the height of the first counterweight structure decreases, it drives the first bed board to increase in height. When the height of the second counterweight structure decreases, it drives the second bed board to increase in height or flip to serve as a backrest structure.

[0006] The embodiments of this application have at least the following beneficial effects: In this application, when the first counterweight structure and the second counterweight structure are in a high position, the first bed board and the second bed board are in a low position, and the lifting bed is used as a regular bed; when the first counterweight structure is in a high position and the second counterweight structure is in a low position, the second bed board rotates relative to the first bed board under the traction of the second counterweight structure, and the second bed board forms a backrest structure, so that the lifting bed is used as a sofa to accommodate the user's sitting posture; when both the first counterweight structure and the second counterweight structure are in a low position, the first bed board and the second bed board are both in a high position under the traction of the first counterweight structure and the second counterweight structure, and the lifting bed is used as a hammock; the lifting bed can meet the sitting and lying postures of different users.

[0007] In some embodiments of this application, the lifting bed further includes a first pulley assembly and a second pulley assembly;

[0008] The first pulley assembly can connect the first bed board and the first counterweight structure via ropes;

[0009] The second pulley assembly can connect the second bed board and the second counterweight structure via ropes.

[0010] In some embodiments of this application, the first pulley assembly includes a first winding structure, a first counterweight pulley connected to the first counterweight structure, and a first bed board pulley connected to the first bed board;

[0011] One end of the rope, which is set on the first counterweight pulley, is connected to the first counterweight structure, and the other end is wrapped around the first winding structure.

[0012] One end of a rope mounted on the first bed board pulley is connected to the first bed board, and the other end is wound around the first winding structure.

[0013] In some embodiments of this application, the second pulley assembly includes a second winding structure, a second counterweight pulley connected to the second counterweight structure, and a second bed board pulley connected to the second bed board;

[0014] One end of the rope, which is mounted on the second counterweight pulley, is connected to the second counterweight structure, and the other end is wound around the second winding structure.

[0015] One end of a rope mounted on the second bed board pulley is connected to the second bed board, and the other end is wound around the second winding structure.

[0016] In some embodiments of this application, the lifting bed further includes a bed frame, and the first pulley assembly and the second pulley assembly are disposed on the bed frame.

[0017] In some embodiments of this application, a hinge structure is provided between the first bed board and the second bed board, the hinge structure including a fixed part and a hinge part;

[0018] Each of the fixed parts is respectively disposed on the first bed board and the second bed board, and the hinged parts are respectively hinged to each of the fixed parts.

[0019] In some embodiments of this application, the hinge structure further includes a locking part, which is hinged to one of the fixed parts. The locking part is provided with a hook structure, which can be hung on adjacent fixed parts to lock the position between the fixed parts.

[0020] In some embodiments of this application, a positioning component is provided between the first counterweight structure and the bed frame, and a positioning component is provided between the second counterweight structure and the bed frame. The positioning component includes a plurality of slots provided on the bed frame and a snap-fit ​​structure provided on the first counterweight structure or the second counterweight structure. The snap-fit ​​structure can be inserted into or detached from the slots.

[0021] In some embodiments of this application, the positioning component further includes an operating part, which is disposed on the first counterweight structure and the second counterweight structure;

[0022] The operating part is rotatably connected to the first counterweight structure or the second counterweight structure, and is connected to the locking structure via a rope. Rotating the operating part can disengage the locking structure from the slot.

[0023] In some embodiments of this application, the first counterweight structure is configured as a bookcase, and the second counterweight structure is configured as a bookcase.

[0024] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0026] Figure 1 This is a schematic diagram of the lifting bed in this application, showing the first and second bed boards in a low position.

[0027] Figure 2 This is a schematic diagram of the lifting bed in this application after removing the first counterweight structure and the second counterweight structure;

[0028] Figure 3 This is a side view of the lifting bed in this application after removing the first counterweight structure and the second counterweight structure;

[0029] Figure 4 This is a schematic diagram of the lifting bed in this application, showing the first and second bed boards in a high position.

[0030] Figure 5 This is a schematic diagram of the structure of the lifting bed in this application, showing the second bed board flipping to serve as a backrest structure;

[0031] Figure 6 This is a schematic diagram of the snap-fit ​​structure in the lifting bed of this application in both the extended and retracted states.

[0032] Figure 7 This is a partial enlarged view (I) of the lifting bed in this application.

[0033] Figure label:

[0034] First bed board 101; Second bed board 102;

[0035] First counterweight structure 201; Second counterweight structure 202;

[0036] First winding structure 301; first counterweight pulley 302; first bed board pulley 303; second winding structure 304; second counterweight pulley 305; second bed board pulley 306; bed frame 307;

[0037] Card slot 401; Snap-fit ​​structure 402; Operating part 403;

[0038] Fixed part 501; hinged part 502; locking part 503; hook structure 504. Detailed Implementation

[0039] This section will combine Figures 1 to 7 The embodiments of this application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0040] In the description of this application, it should be understood that the use of terms such as "center," "middle," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" to indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings is solely for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Features defined with "first" and "second" are used to distinguish feature names and do not have special meanings. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] like Figure 1 As shown in the figure, this application provides a lifting bed, which includes a bed board assembly and a counterweight assembly. The bed board assembly and the counterweight assembly are linked together to change the usage state of the lifting bed.

[0043] In some examples, the bed board assembly includes a first bed board 101 and a second bed board 102, which are arranged side by side at approximately the same height. In this case, the first bed board 101 and the second bed board 102 can be spliced ​​into a whole to provide the user with a larger support bed surface. The lift bed is in the normal bed state to meet the user's lying posture needs.

[0044] Furthermore, the first bed board 101 and the second bed board 102 are hinged together, and the hinge position is located at the edge where the first bed board 101 and the second bed board 102 meet. When the second bed board 102 rotates relative to the first bed board 101, the second bed board 102 is perpendicular to the first bed board 101. At this time, the lift bed is in the sofa use state, the first bed board 101 is used as the seat cushion of the sofa, and the second bed board 102 is used as the backrest of the sofa, so as to meet the user's sitting posture needs.

[0045] Understandably, both the first bed board 101 and the second bed board 102 are equipped with flexible layers to ensure user comfort. Since the flexible layers have a certain height, the structure that enables the hinged connection between the first bed board 101 and the second bed board 102 needs to prevent interference between the flexible layers on the first bed board 101 and the second bed board 102, ensuring smooth relative rotation between them, that is, ensuring a smooth transition from the lift bed to the sofa mode.

[0046] The counterweight assembly includes a first counterweight structure 201 and a second counterweight structure 202. The first counterweight structure 201 is connected to the first bed board 101 to form a linkage, and the second counterweight structure 202 is connected to the second bed board 102 to form a linkage as well.

[0047] It is understandable that when the counterweight structure is in a high position, the corresponding bed board is in a low position; when the counterweight structure moves to a low position, the corresponding bed board moves to a high position under the traction of the counterweight structure.

[0048] Specifically, such as Figure 1 As shown, when the lifting bed is in its normal bed state, both the first counterweight structure 201 and the second counterweight structure 202 are in a high position, and the first bed board 101 and the second bed board 102 are spliced ​​together in a low position to form a flat bed surface; as Figure 4 As shown, when the lifting bed is in hammock mode, to raise the height of the bed board, both the first counterweight structure 201 and the second counterweight structure 202 are in a low position, and the first bed board 101 and the second bed board 102 are spliced ​​together at a high position to form a flat bed surface; as Figure 5 As shown, when the lifting bed is in sofa mode, the height of the second bed board 102 is greater than the height of the first bed board 101. Therefore, the first counterweight structure 201 is in a high position and the second counterweight structure 202 is in a low position. Since the first bed board 101 and the second bed board 102 are hinged, the second bed board 102 rotates relative to the first bed board 101 during the lifting process.

[0049] In addition, the height of the counterweight structure is related to the height of the corresponding bed board. When the lifting bed is in the normal bed state or the hammock state, in order to ensure that the first bed board 101 and the second bed board 102 can form a flat bed surface, the heights of the first counterweight structure 201 and the second counterweight structure 202 are approximately the same.

[0050] In some examples, since the first counterweight structure 201 and the second counterweight structure 202 need to occupy a certain volume, in order to make full use of the space and expand the functions of the first counterweight structure 201 and the second counterweight structure 202, the first counterweight structure 201 and the second counterweight structure 202 are both set in the form of bookshelves.

[0051] Understandably, the heights of both the first counterweight structure 201 and the second counterweight structure 202 of the bookcase can be adjusted to accommodate the heights of different users, making it easier to place books and other items on the first counterweight structure 201 and the second counterweight structure 202.

[0052] like Figure 2 , Figure 3 As shown, in some examples, in order to achieve the linkage between the first counterweight structure 201 and the first bed board 101, and the linkage between the second counterweight structure 202 and the second bed board 102, the lifting bed also includes a first pulley assembly and a second pulley assembly. The first pulley assembly is used to connect the first bed board 101 and the first counterweight structure 201, and the second pulley assembly is used to connect the second bed board 102 and the second counterweight structure 202.

[0053] Understandably, the first pulley assembly is equipped with a rope, which serves as a force transmission medium connecting the first bed board 101 and the first counterweight structure 201. Similarly, the second pulley assembly is also equipped with a rope, which serves as a force transmission medium connecting the second bed board 102 and the second counterweight structure 202.

[0054] In some examples, the lifting bed also includes a bed frame 307 for mounting the first pulley assembly and the second pulley assembly. It is understood that, to meet the height lifting requirements of the first counterweight structure 201 and the second counterweight structure 202, the height at which the bed frame 307 positions the first counterweight structure 201 and the second counterweight structure 202 needs to be greater than or equal to the height of the first counterweight structure 201 and the second counterweight structure 202 when they are in their elevated positions.

[0055] like Figure 2 , Figure 3 As shown, in some examples, the first pulley assembly includes a first winding structure 301, which is disposed on the bed frame 307. The first winding structure 301 is rotatably connected to the bed frame 307 by rotating the winding rope. To concentrate the ropes of each part of the first pulley assembly on the first winding structure 301, the first winding structure 301 is generally formed in a column shape, has a certain length, and is approximately horizontal.

[0056] Furthermore, the first pulley assembly also includes a first counterweight pulley 302, on which a rope is used to connect the first counterweight structure 201 and the first winding structure 301. The first counterweight pulley 302 is used as a fixed pulley, and is located at the top of the bed frame 307, higher than the height of the first winding structure 301. When the height of the first counterweight structure 201 changes, the rope connecting the first counterweight structure 201 gradually winds around or unwinds from the first winding structure 301, thereby driving the first winding structure 301 to rotate. It is understood that the rope on the first counterweight pulley 302 remains approximately vertical.

[0057] Meanwhile, the first pulley assembly also includes a first bed board pulley 303, on which a rope is used to connect the first bed board 101 to the first winding structure 301. The first bed board pulley 303 also functions as a fixed pulley. As the height change of the first counterweight structure 201 drives the first winding structure 301 to rotate, the rope on the first bed board pulley 303 continuously wraps around or unwraps from the first winding structure 301 during rotation, thereby pulling or releasing the rope on the first bed board pulley 303. When releasing the rope on the first bed board pulley 303, the first bed board 101 can lower its height by its own weight, thereby completing the height adjustment of the first bed board 101.

[0058] Specifically, since the first bed board 101 has a certain length, in order to ensure the consistency of movement throughout the bed board and to avoid excessive stress on a single rope, multiple pulleys 303 are provided for the first bed board, and correspondingly, multiple ropes are also provided. The ropes on each of the first bed board pulleys 303 are connected to both ends of the first bed board 101, distributing the traction force across multiple ropes.

[0059] In addition, to ensure the stable connection between the ropes on each first bed board pulley 303 and the first bed board 101, a movable pulley is provided at the connection position between the rope and the first bed board 101. The movable pulley is provided on the first bed board 101, and the rope on the first bed board pulley 303 passes around the movable pulley and is then fixedly connected to the first bed board pulley 303.

[0060] In some examples, similar to the first pulley assembly, the second pulley assembly includes a second winding structure 304 disposed on the bed frame 307. The second winding structure 304 winds the rope by rotating it. To concentrate the ropes of the various parts of the second pulley assembly on the second winding structure 304, the second winding structure 304 is generally formed into a column shape, has a certain length, and is positioned approximately horizontally.

[0061] Furthermore, the second pulley assembly also includes a second counterweight pulley 305, on which a rope connects the second counterweight structure 202 and the second winding structure 304. The second counterweight pulley 305 acts as a fixed pulley, with a height greater than that of the second winding structure 304. When the height of the second counterweight structure 202 changes, the rope connecting the second counterweight structure 202 gradually winds around or unwinds from the second winding structure 304, thereby driving the second winding structure 304 to rotate. It is understood that the rope on the second counterweight pulley 305 remains approximately vertical.

[0062] Meanwhile, the second pulley assembly also includes a second bed board pulley 306, on which a rope is used to connect the second bed board 102 and the second winding structure 304. The second bed board pulley 306 also serves as a fixed pulley. During the rotation of the second winding structure 304, the rope on the second bed board pulley 306 continuously winds around or unwinds from the second winding structure 304, thereby pulling or releasing the rope on the second bed board pulley 306.

[0063] Specifically, since the second bed board 102 has a certain length, in order to ensure the consistency of movement throughout the bed board and to avoid excessive stress on a single rope, multiple pulleys 306 are installed on the second bed board, and correspondingly, multiple ropes are also installed. The ropes on each pulley 306 of the second bed board are connected to both ends of the second bed board 102, distributing the traction force across multiple ropes.

[0064] In addition, to ensure the stable connection between the ropes on each of the second bed board pulleys 306 and the second bed board 102, a movable pulley is provided at the connection point between the ropes and the second bed board 102, and the movable pulley is provided on the first bed board 101.

[0065] The second bed board 102 is capable of two types of movement: lifting by moving and lifting by rotating. To facilitate the rotation of the second bed board 102, the movable pulley and the corresponding second bed board pulley 306 are offset. In the horizontal position, compared to the movable pulley, the second bed board pulley 306 is closer to the connection point between the first bed board 101 and the second bed board 102. When the rope on the second bed board pulley 306 pulls the second bed board 102, the rope tilts, providing a traction force in the tilting direction to the second bed board 102, which is beneficial to the rotation of the second bed board 102.

[0066] like Figure 6 As shown, in some examples, to position the first counterweight structure 201 and the second counterweight structure 202 at the required height, positioning components are provided on both the first counterweight structure 201 and the second counterweight structure 202. These positioning components include a snap-fit ​​structure 402, which is located on the back of the bookcase when the first counterweight structure 201 and the second counterweight structure 202 are configured as a bookcase. Simultaneously, the positioning components also include slots 401 on the bed frame 307. These slots 401 cooperate with the positioning components to vertically position the first counterweight structure 201 and the second counterweight structure 202. It is understood that multiple slots 401 are arranged side-by-side.

[0067] Further, the snap-fit ​​structure 402 includes a sleeve and a movable part. The sleeve is fitted over the movable part, and a spring is disposed inside the sleeve. The spring is fitted over the movable part and connected to it, with the movable part facing the snap-fit ​​groove 401. When the snap-fit ​​structure 402 is in its natural state, under the action of the spring, the movable part protrudes from the sleeve with a larger length, so that the movable part is embedded in the snap-fit ​​groove 401. At this time, the first counterweight structure 201 or the second counterweight structure 202 is positioned. When the movable part is subjected to tension, the movable part compresses the spring, causing the movable part to protrude from the sleeve with a smaller length, and the movable part disengages from the snap-fit ​​groove 401. At this time, the first counterweight structure 201 or the second counterweight structure 202 is in a free state. When the first counterweight structure 201 or the second counterweight structure 202 reaches the target position, the tension on the movable part is released, and the movable part again protrudes from the sleeve with a larger length and is embedded in the snap-fit ​​groove 401.

[0068] In some examples, to facilitate applying tension to the moving part, the positioning assembly also includes an operating part 403, which is disposed on the first counterweight structure 201 or the second counterweight structure 202. When the first counterweight structure 201 and the second counterweight structure 202 are configured as a bookcase, the operating part 403 is disposed on the shelf of the bookcase, and the operating part is rotatably connected to the first counterweight structure 201 or the second counterweight structure 202.

[0069] The operating part 403 is connected to a rope, which is connected to the moving part. The rotation of the operating part 403 pulls the rope, which transmits the traction force to the moving part, thereby causing the moving part to disengage from the slot 401.

[0070] like Figure 7 As shown in the enlarged view I, in some examples, when the lift bed is in its normal bed or hammock state, the first bed board 101 and the second bed board 102 need to form a flat bed surface. In this case, it is necessary to prevent rotation between the first bed board 101 and the second bed board 102. When the lift bed is in its sofa state, the first bed board 101 and the second bed board 102 are hinged together, and the second bed board 102 is perpendicular to each other. To meet the connection requirements of the first bed board 101 and the second bed board 102, a hinge structure is provided between them. This hinge structure allows the first bed board 101 and the second bed board 102 to switch between a fixed connection and a rotating connection.

[0071] Furthermore, the hinge structure includes a fixing part 501 and a hinge part 502. Specifically, two fixing parts 501 are provided, and the two fixing parts 501 are respectively provided on the side walls of the first bed board 101 and the second bed board 102. When the first bed board 101 and the second bed board 102 form a flat bed surface, the two fixing parts 501 approach and abut against each other. When the first bed board 101 and the second bed board 102 are perpendicular to each other, the two fixing parts 501 move away from each other.

[0072] The hinge portion 502 is hinged to each of the two fixed portions 501, thereby forming an indirect hinged relationship between the two fixed portions 501. Since both the first bed board 101 and the second bed board 102 are provided with flexible layers, in order to avoid interference between the flexible layers during relative rotation, the position where the hinge portion 502 is connected to the fixed portion 501 is close to the top surface of the flexible layer.

[0073] Specifically, to enable the switching between a fixed connection and a rotatable connection between the first bed board 101 and the second bed board 102, the hinge structure further includes a locking part 503. The locking part 503 is hinged to a fixed part 501, and a hook structure 504 is provided on the locking part 503. A protruding structure is provided on the other fixed part 501. During the rotation of the locking part 503, the hook structure 504 can be attached to or detached from the protruding structure. It can be understood that when the lifting bed is in a normal bed state or a hammock state, the hook structure 504 is attached to the protruding structure to form a fixed connection between the first bed board 101 and the second bed board 102; when the lifting bed is in a sofa state, the hook structure 504 detaches from the protruding structure to form a rotatable connection between the first bed board 101 and the second bed board 102.

[0074] In the description of this specification, the use of terms such as "an embodiment," "some examples," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" indicates that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0075] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A lift bed characterized in that, Comprise: a bed board assembly, comprising a first bed board (101), a second bed board (102), the first bed board (101) and the second bed board (102) are hinged; a counterweight assembly, comprising a first counterweight structure (201), a second counterweight structure (202), the first counterweight structure (201) is connected with the first bed board (101), and the second counterweight structure (202) is connected with the second bed board (102); wherein, when the first counterweight structure (201) is lowered in height, the first bed board (101) is driven to be lifted in height, when the second counterweight structure (202) is lowered in height, the second bed board (102) is driven to be lifted in height or turned as a backrest structure; when the first counterweight structure (201) and the second counterweight structure (202) are in high position, the first bed board (101) and the second bed board (102) are in low position, and the lifting bed is used as a common bed body; when the first counterweight structure (201) is in high position and the second counterweight structure (202) is in low position, the second bed board (102) is rotated relative to the first bed board (101), and the second bed board (102) forms a backrest structure, so that the lifting bed is used as a sofa; when the first counterweight structure (201) and the second counterweight structure (202) are both in low position, the first bed board (101) and the second bed board (102) are both in high position, and the lifting bed is used as a hammock.

2. The lifting bed according to claim 1, further comprising a first pulley assembly and a second pulley assembly; the first pulley assembly is capable of connecting the first bed board (101) and the first counterweight structure (201) through a rope; the second pulley assembly is capable of connecting the second bed board (102) and the second counterweight structure (202) through a rope.

3. The lifting bed according to claim 2, wherein the first pulley assembly comprises a first winding structure (301), a first counterweight pulley (302) connected with the first counterweight structure (201), and a first bed board pulley (303) connected with the first bed board (101); one end of the rope arranged on the first counterweight pulley (302) is connected with the first counterweight structure (201), and the other end is wound on the first winding structure (301); one end of the rope arranged on the first bed board pulley (303) is connected with the first bed board (101), and the other end is wound on the first winding structure (301).

4. The lifting bed according to claim 2, wherein the second pulley assembly comprises a second winding structure (304), a second counterweight pulley (305) connected with the second counterweight structure (202), and a second bed board pulley (306) connected with the second bed board (102); one end of the rope arranged on the second counterweight pulley (305) is connected with the second counterweight structure (202), and the other end is wound on the second winding structure (304); ​ ​ ​ One end of a rope arranged on the second bed plate pulley (306) is connected to the second bed plate (102), and the other end is wound on the second winding structure (304).

5. The lifting bed according to claim 2, wherein, The lifting bed further comprises a bed frame (307), and the first pulley assembly and the second pulley assembly are arranged on the bed frame (307).

6. The lifting bed according to claim 1, wherein, A hinge structure is arranged between the first bed plate (101) and the second bed plate (102), and the hinge structure comprises a fixed part (501) and a hinge part (502). Each fixed part (501) is arranged on the first bed plate (101) and the second bed plate (102) respectively, and the hinge part (502) is hinged with each fixed part (501).

7. The lifting bed according to claim 6, wherein, The hinge structure further comprises a lock part (503), the lock part (503) is hinged with one fixed part (501), and a hook structure (504) is arranged on the lock part (503), the hook structure (504) can be hung on the adjacent fixed part (501) to lock the position between each fixed part (501).

8. The lifting bed according to claim 5, wherein, A positioning assembly is arranged between the first counterweight structure (201) and the bed frame (307), and a positioning assembly is arranged between the second counterweight structure (202) and the bed frame (307), the positioning assembly comprises a plurality of clamping grooves (401) arranged on the bed frame (307) and a clamping structure (402) arranged on the first counterweight structure (201) or the second counterweight structure (202), and the clamping structure (402) can be embedded in or separated from the clamping groove (401).

9. The lifting bed according to claim 8, wherein, The positioning assembly further comprises an operation part (403) arranged on the first counterweight structure (201) or the second counterweight structure (202); The operation part (403) is rotationally connected with the first counterweight structure (201) or the second counterweight structure (202), and the clamping structure (402) is connected with the operation part (403) through a rope, and rotating the operation part (403) can make the clamping structure (402) separate from the clamping groove (401).

10. The lifting bed according to claim 1, wherein, The first counterweight structure (201) is arranged as a bookcase, and the second counterweight structure (202) is arranged as a bookcase.

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