Lift driven bed

Abstract

The utility model discloses a kind of lifting drive beds, it is related to furniture technical field;The bed includes bedstead, bed board, and the first lifting mechanism and the second lifting structure of parallelly arranged between bedstead and bed board;The first lifting mechanism includes hinge, first hydraulic rod, L-shaped support rod and connecting table, the first hydraulic rod is used to drive the bed board rotates around the hinge, realizes inclination lifting;The second lifting structure includes first support rod, support plate, first rotating rod, second rotating rod and second hydraulic rod;The effective length of the first rotating rod with the second rotating rod is equal and mutually parallelly arranged, and two ends are respectively rotationally connected the first support rod and the support plate, the utility model is connected in parallel by two sets of mechanisms, solve the single function of lifting bed in prior art, realized the integration of two functions of inclination and integral lifting, and parallelogram linkage structure ensures the smooth and reliable of integral lifting process.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, and in particular to a lifting drive bed. Background Technology

[0002] Adjustable beds are a common type of modern furniture or medical assistive equipment. By adjusting the posture or height of the bed board, they can provide users with a more comfortable resting experience or provide convenience for people with mobility impairments and caregivers.

[0003] In existing lift bed designs, there are generally two main ways to achieve this functionality. The first is the backrest lift bed, which mainly uses a linkage or push rod mechanism to raise part of the bed board to meet the user's need for leaning back when reading or watching TV in bed. However, this type of bed cannot change the overall height of the bed itself, and its improvement in convenience for users getting out of bed or for caregivers to perform operations is limited.

[0004] The second type is the integrated lift bed, commonly found in the nursing field. It can raise or lower the entire bed surface horizontally through a scissor lift or linkage mechanism to facilitate the transfer of users or accommodate caregivers of different heights. However, this type of bed often lacks the function of independent back tilting, failing to meet the user's comfort needs for changing positions in bed.

[0005] In summary, existing lifting beds often have limited functionality and are difficult to integrate and independently control both backrest tilt and overall bed lifting modes on the same bed frame. This results in products that cannot meet the diverse needs of daily comfort and assisted care.

[0006] Therefore, this utility model proposes a lifting drive bed to overcome the shortcomings of the prior art. Utility Model Content

[0007] To overcome the above shortcomings, this utility model provides a lifting drive bed, which aims to improve the problem that existing lifting beds have limited functions and are difficult to integrate two different lifting modes on the same device to adapt to diverse usage scenarios.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a lifting drive bed, comprising: a bed frame, and a bed board movably disposed above the bed frame; The lifting drive bed also includes a first lifting mechanism and a second lifting structure arranged in parallel between the bed frame and the bed board; The second lifting structure includes a first support rod fixedly connected to the inner wall of the bed frame, a support plate fixedly connected to the bottom of the bed board, a first rotating rod and a second rotating rod rotatably connected at both ends to the first support rod and the support plate respectively, and a second hydraulic rod linked between the bed frame and the first rotating rod; Furthermore, the first lifting mechanism includes a hinge rotatably connected between the bed frame and the bed board, a first hydraulic rod for driving the bed board to rotate around the hinge, an L-shaped support rod for supporting the first hydraulic rod, and a connecting platform for transmitting the power of the first hydraulic rod. The outer wall of the connecting platform is fixedly connected to the lower surface of the bed board.

[0009] Preferably, the first support rod is a horizontally arranged flat plate structure, and both the first rotating rod and the second rotating rod rotate within the first support rod through their respective connecting rods.

[0010] Preferably, the effective lengths of the first rotating rod and the second rotating rod are equal and they are arranged parallel to each other. The rotating connection point on the first support rod and the rotating connection point on the support plate together form the four vertices of a parallelogram connecting rod.

[0011] Preferably, the support plate is a flat plate structure, the upper surface of the support plate is fixedly connected to the bottom surface of the bed board, and the side of the support plate is integrally formed with a connecting shaft for rotatably connecting the first rotating rod and the second rotating rod.

[0012] Preferably, the L-shaped support rod is fixedly connected to the lower surface of the bed frame; the connecting platform is fixedly connected to the bottom of the bed board; one end of the first hydraulic rod is rotatably connected to the L-shaped support rod, and the other end of the first hydraulic rod is hinged to the connecting platform.

[0013] Preferably, the L-shaped support rod includes a fixed arm and a support arm that are perpendicular to each other. The fixed arm is fixedly connected to the lower surface of the bed frame, and the free end of the support arm is rotatably connected to the first hydraulic rod.

[0014] Preferably, the hinges are a plurality of hinges spaced apart along the width of the bed board, and the pivots of the plurality of hinges are located on the same straight line.

[0015] Preferably, both the first hydraulic rod and the second hydraulic rod are telescopic electro-hydraulic actuators.

[0016] This utility model has the following beneficial effects: 1. In this utility model, by setting a first lifting mechanism and a second lifting structure in parallel between the same bed frame and bed board, and by setting a first rotating rod and a second rotating rod of equal effective length and parallel to each other in the second lifting structure, so that each rotating connection point together forms the four vertices of a parallelogram connecting rod, the problem of the single function of the existing lifting bed and the swaying or unstable posture of some integral lifting mechanisms during the lifting process is solved. The technical effect of integrating two independent lifting modes on the same device and ensuring that the overall lifting process is always stable, safe and reliable is achieved.

[0017] 2. In this utility model, by using a support plate integrally formed with a connecting shaft for rotational connection in the side of the second lifting structure, and setting an L-shaped support rod in the first lifting mechanism to provide support for the first hydraulic rod, and transmitting power to the bed board through the connecting table, the problems of cumbersome and easy loosening of the rotating shaft connection and unstable support of the tilting lifting transmission chain in the prior art are solved. This achieves the technical effects of simplifying the number of parts, improving the reliability of the connection, and ensuring that both lifting functions are directly transmitted and the structure is stable and reliable. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a lifting drive bed proposed in this utility model; Figure 2 This is a schematic diagram of the L-shaped support rod structure of a lifting drive bed proposed in this utility model; Figure 3 This is a schematic diagram of the hinge structure of a lifting drive bed proposed in this utility model; Figure 4 This is a schematic diagram of the second rotating rod part of a lifting drive bed proposed in this utility model.

[0019] Legend: 1. Bed frame; 2. First lifting mechanism; 201. Bed board; 202. Hinge; 203. L-shaped support rod; 204. First hydraulic rod; 205. Connecting platform; 3. Second lifting structure; 301. First rotating rod; 302. First support rod; 303. Second hydraulic rod; 304. Second rotating rod; 305. Support plate. Detailed Implementation

[0020] Please refer to Figures 1 to 4 This utility model provides a lifting drive bed, which aims to solve the problem that existing lifting beds have a single function and it is difficult to integrate two lifting modes with different principles on the same device to adapt to diverse usage scenarios.

[0021] The lifting drive bed includes a bed frame 1 and a bed board 201 that is movably disposed above the bed frame 1. The bed frame 1 serves as the mounting base for the entire lifting drive bed and provides stable support. The bed board 201 is used to support the user. The core structure of the lifting drive bed is that a first lifting mechanism 2 and a second lifting structure 3 are connected in parallel between the bed frame 1 and the bed board 201. Through the coordinated work of the two independent mechanisms, a composite lifting function is achieved.

[0022] The second lifting structure 3 is an important component for realizing the core function of this solution. The second lifting structure 3 includes a first support rod 302 fixedly connected to the inner wall of the bed frame 1, a support plate 305 fixedly connected to the bottom of the bed board 201, a first rotating rod 301, a second rotating rod 304, and a second hydraulic rod 303. The first support rod 302 is a horizontally arranged flat plate structure, providing a stable rotational reference for the entire linkage mechanism. The support plate 305 is a flat plate structure, with its upper surface fixedly connected to the bottom surface of the bed board 201, used to transmit the lifting force of the linkage mechanism to the bed board 201. The first rotating rod 301 and the second rotating rod 304 serve as the core transmission links, with one end of the first rotating rod 301 and one end of the second rotating rod 304 rotating around the first support rod 302 via their respective connecting rods. Inside, the other ends of the first rotating rod 301 and the second rotating rod 304 are both rotatably connected by a connecting shaft integrally formed on the side of the support plate 305. Furthermore, the effective lengths of the first rotating rod 301 and the second rotating rod 304 are equal and parallel to each other, so that the rotating connection point on the first support rod 302 and the rotating connection point on the support plate 305 together form the four vertices of a parallelogram linkage. This quadrilateral linkage structure can ensure that the bed board 201 maintains a stable posture during the lifting process and avoids tilting or shaking. The second hydraulic rod 303, as the power source of the second lifting structure 3, is linked between the bed frame 1 and the first rotating rod 301. Through its own extension and retraction, it drives the first rotating rod 301 to swing, thereby driving the entire linkage mechanism to move.

[0023] The first lifting mechanism 2 is a component for realizing another lifting mode of this solution. The first lifting mechanism 2 includes a hinge 202, a first hydraulic rod 204, an L-shaped support rod 203, and a connecting platform 205. The hinge 202 is rotatably connected between the bed frame 1 and the bed board 201, forming the rotation axis for the tilting and lifting of the bed board 201. Furthermore, the hinge 202 can be a plurality of hinges spaced apart along the width direction of the bed board 201, with the rotation axes of the plurality of hinges located on the same straight line to ensure smooth and synchronous rotation. The first hydraulic rod 204 is used to drive the bed board 201 to rotate around the hinge 202. The L-shaped support rod 203 provides support for the first hydraulic rod 204. The connecting platform 205 is used to transmit the power of the first hydraulic rod 204. Specifically, the L-shaped support rod 203 is fixedly connected to the lower surface of the bed frame 1, and the connecting platform 205... The outer wall of the connecting platform 205 is fixedly connected to the lower surface of the bed board 201. One end of the first hydraulic rod 204 is rotatably connected to the L-shaped support rod 203, and the other end of the first hydraulic rod 204 is hinged to the connecting platform 205, thus forming a complete drive transmission chain. In a preferred embodiment, the L-shaped support rod 203 includes a fixed arm and a support arm that are perpendicular to each other. The fixed arm is used to achieve a fixed connection with the lower surface of the bed frame 1, and the free end of the support arm is used to rotatably connect to the first hydraulic rod 204, providing a stable support point for the hydraulic rod. To ensure the reliability of the drive force transmission, the connecting platform 205 is fixedly connected to the bottom of the bed board 201. In terms of the drive source, the first hydraulic rod 204 and the second hydraulic rod 303 are both telescopic electric hydraulic push rods, which are controlled by an external electronic control system to achieve precise lifting and lowering actions.

[0024] The stable foundation of the second lifting structure 3 is the first support rod 302. The first support rod 302 is a horizontally arranged flat plate structure, which is firmly fixed to the inner wall of the bed frame 1 by welding or bolts, providing a stable rotation reference for the movement of the entire linkage mechanism and forming the stationary rod of the mechanism. The first rotating rod 301 and the second rotating rod 304, which are the main transmission bodies, are rotatably connected to the first support rod 302 through their respective connecting rods, and can swing synchronously within the structural limits of the first support rod 302. As the output end of the movement, the upper surface of the support plate 305 is fixedly connected to the bottom surface of the bed board 201 over a large area to ensure that the force during the lifting process can be evenly transmitted to the entire bed board 201. The side of the support plate 305 is integrally formed with a connecting shaft for rotatably connecting the first rotating rod 301 and the second rotating rod 304. The other end of the first rotating rod 301 and the other end of the second rotating rod 304 are respectively rotatably connected to the corresponding connecting shaft to form a movable rotating pair.

[0025] Meanwhile, the second hydraulic rod 303, which provides driving force for the entire second lifting structure 3, is linked between the bed frame 1 and the first rotating rod 301. In one specific configuration, the end of the cylinder of the second hydraulic rod 303 is rotatably connected to a support on the bed frame 1, and the piston rod output end of the second hydraulic rod 303 is rotatably connected to the middle of the rod body of the first rotating rod 301 or to one end near the first support rod 302. By changing the lever arm, different lifting speeds and force characteristics can be obtained.

[0026] In the assembled state, since the effective lengths of the first rotating rod 301 and the second rotating rod 304 are equal and they are arranged parallel to each other, the first support rod 302, the first rotating rod 301, the support plate 305, and the second rotating rod 304 together constitute a standard parallelogram linkage mechanism. The rotation connection point on the first support rod 302 and the rotation connection point on the support plate 305 together form the four vertices of a parallelogram linkage. This precise parallelogram linkage structure ensures that when the piston rod of the second hydraulic rod 303 extends or retracts, it drives the first rotating rod 301 and the second rotating rod 304 to swing synchronously, thereby pushing the support plate 305 to drive the bed board 201 to complete a smooth vertical or near-vertical lifting and lowering while always maintaining a horizontal posture. This structural design effectively avoids the lateral swaying or angle changes during the lifting and lowering process that may be caused by single-link drive, greatly improving the stability of the lifting and lowering action and the user's sense of security.

[0027] As a preferred embodiment, in order to enhance the rotational stability and load-bearing capacity of the second lifting structure 3, the first support rod 302 is specifically a horizontally arranged flat plate structure. Compared with a simple pin, this flat plate structure provides greater rigidity and a more stable installation foundation. Furthermore, the first rotating rod 301 and the second rotating rod 304 are both inserted and rotated inside the first support rod 302 through their respective connecting rods. This design effectively disperses shear stress by increasing the contact area of ​​the rotating pair, thereby improving the durability and reliability of the connection.

[0028] As a further preferred embodiment, in order to ensure that the bed board 201 can maintain an absolutely horizontal posture during the lifting process driven by the second lifting structure 3, the effective lengths of the first rotating rod 301 and the second rotating rod 304 are equal and arranged parallel to each other. Furthermore, the connection geometry between the first rotating rod 301 and the second rotating rod 304 and the first support rod 302 and the support plate 305 is precisely designed so that the rotation connection points on the first support rod 302 and the rotation connection points on the support plate 305 together form the four vertices of a parallelogram linkage. The geometric characteristics of this parallelogram linkage mechanism fundamentally ensure that the support plate 305, as the floating edge, only translates during the movement and does not rotate, thereby ensuring the absolute stability of the bed board 201.

[0029] As another preferred embodiment, in order to optimize the structural strength and manufacturing process of the support plate 305, the support plate 305 is designed as a flat plate structure. The upper surface of the support plate 305 is fixedly connected to the bottom surface of the bed board 201 by welding or bolt fastening. In particular, the side of the support plate 305 is integrally formed with a connecting shaft for rotatably connecting the first rotating rod 301 and the second rotating rod 304. This integral design avoids the use of additional pins or bolts as rotating shafts, reduces the number of parts and potential loosening points, and greatly improves the integrity of the structure and the reliability of long-term use.

[0030] As a further refinement of the connection relationship of the first lifting mechanism 2, the L-shaped support rod 203 is firmly fixed to the lower surface of the bed frame 1, serving as the static anchor point of the entire mechanism. The connecting platform 205 is fixedly connected to the bottom of the bed board 201, serving as the direct point of force application. One end of the power source first hydraulic rod 204 is rotatably connected to the L-shaped support rod 203, and the other end of the first hydraulic rod 204 is connected to the connecting platform 205 by a hinge, thus forming a complete drive chain from the stationary end to the moving end, ensuring the effective transmission of driving force.

[0031] Based on the connection relationship of the first lifting mechanism 2 mentioned above, as a specific structural implementation, the L-shaped support rod 203 specifically includes a fixed arm and a support arm that are perpendicular to each other. The fixed arm is used to provide a stable mounting surface for fixed connection with the lower surface of the bed frame 1, while the support arm extends from the fixed arm and is rotatably connected to the first hydraulic rod 204 at the free end of the support arm. This L-shaped design cleverly provides the necessary operating space for the swing and extension of the first hydraulic rod 204, avoiding interference with other parts of the bed frame 1 during the movement.

[0032] To ensure the smoothness and uniform load distribution when the first lifting mechanism 2 drives the bed board 201 to rotate, the hinge 202 is specifically a plurality of hinges spaced apart along the width direction of the bed board 201, and the pivots of the plurality of hinges are located on the same straight line. This distributed layout, which decomposes a single long hinge into multiple independent hinges, can distribute the weight and lifting force of the bed board 201 more evenly on the bed frame 1, effectively preventing local deformation or twisting of the bed board 201 and ensuring smooth and unobstructed rotation.

[0033] As a specific limitation on the driving source, in order to achieve precise, labor-saving and quiet lifting control, both the first hydraulic rod 204 and the second hydraulic rod 303 are preferably telescopic electro-hydraulic push rods. These push rods integrate motors, hydraulic pumps and cylinders. Users only need to control the extension and retraction of the push rods with a simple electric control switch, thereby driving the two lifting mechanisms to complete complex lifting actions, which greatly improves the convenience and comfort of use.

[0034] Working principle: When the tilting and lifting function is required, the first hydraulic rod 204 of the first lifting mechanism 2 is extended. The first hydraulic rod 204 is a telescopic electric hydraulic push rod. One end of the first hydraulic rod 204 is rotatably connected to the L-shaped support rod 203 fixed on the lower surface of the bed frame 1, and the other end of the first hydraulic rod 204 is hinged to the connecting platform 205. The outer wall of the connecting platform 205 is fixedly connected to the lower surface of the bed board 201. The extension of the first hydraulic rod 204 pushes the connecting platform 205, thereby causing the bed board 201 to rotate upward around the hinge 202 rotatably connected between the bed frame 1 and the bed board 201, thus realizing the back lifting function. When the first hydraulic rod 204 retracts, it pulls the connecting platform 205 in the opposite direction, causing the bed board 201 to rotate downward around the hinge 202 to return to the horizontal position.

[0035] When the overall lifting function is required, the second hydraulic rod 303 of the second lifting structure 3 extends. The second hydraulic rod 303 is also a telescopic electric hydraulic push rod, and is linked between the bed frame 1 and the first rotating rod 301. The extension of the second hydraulic rod 303 pushes the first rotating rod 301 to rotate around the first support rod 302 fixed to the inner wall of the bed frame 1. Since the effective lengths of the first rotating rod 301 and the second rotating rod 304 are equal and parallel to each other, and their two ends are respectively rotatably connected to the first support rod 302. 02 and support plate 305 together form the four vertices of a parallelogram linkage. Therefore, the rotation of the first rotating rod 301 will force the second rotating rod 304 to rotate synchronously and in the same direction. The two rotating rods together push the support plate 305 fixed below the bed board 201 and drive the bed board 201 to rise smoothly. When the second hydraulic rod 303 retracts, it pulls the first rotating rod 301 in the opposite direction, driving the entire linkage mechanism and the bed board 201 to fall smoothly. Through the independent operation of the two sets of mechanisms, a composite lifting function is realized.

Claims

1. A lifting drive bed, comprising: The bed frame (1) and the bed board (201) movably disposed above the bed frame (1) are characterized in that: the lifting drive bed further includes a first lifting mechanism (2) and a second lifting structure (3) disposed in parallel between the bed frame (1) and the bed board (201); The second lifting structure (3) includes a first support rod (302) fixedly connected to the inner wall of the bed frame (1), a support plate (305) fixedly connected to the bottom of the bed board (201), a first rotating rod (301) and a second rotating rod (304) respectively rotatably connected to the first support rod (302) and the support plate (305) at both ends, and a second hydraulic rod (303) linked between the bed frame (1) and the first rotating rod (301). Furthermore, the first lifting mechanism (2) includes a hinge (202) rotatably connected between the bed frame (1) and the bed board (201), a first hydraulic rod (204) for driving the bed board (201) to rotate around the hinge (202), an L-shaped support rod (203) for supporting the first hydraulic rod (204), and a connecting platform (205) for transmitting the power of the first hydraulic rod (204). The outer wall of the connecting platform (205) is fixedly connected to the lower surface of the bed board (201).

2. The lifting drive bed according to claim 1, characterized in that, The first support rod (302) is a horizontally arranged flat plate structure. The first rotating rod (301) and the second rotating rod (304) both rotate within the first support rod (302) through their respective connecting rods.

3. A lifting drive bed according to claim 1, characterized in that, The effective lengths of the first rotating rod (301) and the second rotating rod (304) are equal and they are arranged parallel to each other. The rotation connection point on the first support rod (302) and the rotation connection point on the support plate (305) together form the four vertices of a parallelogram connecting rod.

4. A lifting drive bed according to claim 1, characterized in that, The support plate (305) is a flat plate structure. The upper surface of the support plate (305) is fixedly connected to the bottom surface of the bed board (201). The side of the support plate (305) is integrally formed with a connecting shaft for rotatably connecting the first rotating rod (301) and the second rotating rod (304).

5. A lifting drive bed according to claim 1, characterized in that, The L-shaped support rod (203) is fixedly connected to the lower surface of the bed frame (1); the connecting platform (205) is fixedly connected to the lower part of the bed board (201); one end of the first hydraulic rod (204) is rotatably connected to the L-shaped support rod (203), and the other end of the first hydraulic rod (204) is hinged to the connecting platform (205).

6. A lifting drive bed according to claim 5, characterized in that, The L-shaped support rod (203) includes a fixed arm and a support arm that are perpendicular to each other. The fixed arm is fixedly connected to the lower surface of the bed frame (1), and the free end of the support arm is rotatably connected to the first hydraulic rod (204).

7. A lifting drive bed according to claim 1, characterized in that, The hinge (202) is a plurality of hinges spaced apart along the width direction of the bed board (201), and the pivots of the plurality of hinges are located on the same straight line.

8. A lifting drive bed according to claim 1, characterized in that, Both the first hydraulic rod (204) and the second hydraulic rod (303) are telescopic electro-hydraulic push rods.

Images