A three-section folding electric bed

Abstract

The application discloses a three-section folding electric bed, which comprises a bed plate part and a bed frame. The bed plate part comprises a hip plate, a leg plate and a foot plate. A first electric cylinder and an electric cylinder support frame rotatably connected with one end of the first electric cylinder are arranged below the leg plate and the foot plate. An active link set is arranged between the first electric cylinder and the leg plate and the foot plate. The other end of the first electric cylinder is in transmission connection with the active link set, so as to drive the leg plate and the foot plate to move up and down. When the leg part of the human body is lifted, the leg plate is completely separated from the hip plate and is inclined upward by a preset angle relative to the hip plate. The manufacturing and assembling difficulty of the leg plate and the driving part thereof is remarkably reduced, and the cost is lower.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric beds, in particular to a three-section electric bed. BACKGROUND

[0002] At present, there are three-section electric beds on the market, that is, the entire bed body is divided into three foldable parts along the length direction of the bed, and the entire bed body is folded into a rectangular frame structure in the packaging state. Moreover, the bed plate part of the electric bed can be divided into a back plate, a hip plate, a leg plate and a foot plate, the hip plate is fixedly connected with the bed frame, and the remaining plates can be moved up and down under the driving of electric cylinders, and the electric cylinders are provided with supports as their supporting bases. However, at present, the electric bed still has the defects of high manufacturing and assembly difficulty and high cost. SUMMARY

[0003] The purpose of the present application is to provide a three-section folding electric bed, which significantly reduces the manufacturing and assembly difficulty of the leg plate and its driving part, and has lower cost.

[0004] The purpose of the present application is achieved by a three-section folding electric bed, which comprises a bed plate part and a bed frame, the bed plate part comprises a hip plate, a leg plate and a foot plate, a first electric cylinder and an electric cylinder support frame rotatably connected with one end of the first electric cylinder are arranged below the leg plate and the foot plate, a movable link set is arranged between the first electric cylinder and the leg plate and the foot plate, and the other end of the first electric cylinder is in transmission connection with the movable link set to drive the leg plate and the foot plate to move up and down.

[0005] When the leg part of the human body is lifted, the leg plate is completely separated from the hip plate and is inclined upward by a preset angle relative to the hip plate.

[0006] Further, the movable link set comprises:

[0007] a first quadrilateral link mechanism in transmission connection with the first electric cylinder, which is composed of a first link and a second link, two ends of the first link are rotatably connected with the bed frame and the foot plate respectively, and two ends of the second link are rotatably connected with the bed frame and the foot plate respectively.

[0008] a third link, two ends of the third link are rotatably connected with the leg plate and the first link respectively.

[0009] Further, the first quadrilateral link mechanism is an irregular quadrilateral mechanism, the length of the first link is greater than the length of the second link, and the first link is closer to the leg plate than the second link.

[0010] Further, the connecting rod three, the leg plate, the foot plate and the connecting rod one constitute a second quadrilateral connecting rod mechanism; when the human leg is lifted, the leg plate and the foot plate are mutually inclined to form a V shape with the opening downward, so that the rotating connection position points of the two constitute the highest position points of the two.

[0011] Further, the first electric cylinder is in transmission connection with the connecting rod one.

[0012] The beneficial effects of the present application are:

[0013] 1. The leg plate and the foot plate are linked and lifted under the drive of the first electric cylinder, after being lifted, the leg plate and the hip plate are separated from each other and a certain gap is left, but the lifting angle and position of the leg plate are consistent with those of the traditional electric bed, that is, during the lifting process, the leg plate and the foot plate will slightly move to the head direction, so as to ensure that the imaginary rotating point of the leg plate is consistent with the actual demand, the overall bed surface of the whole bed can still form a relatively complete lifted bed surface, the same supporting effect on the mattress as the traditional electric bed is achieved, thereby the manufacturing and assembly difficulty of the leg plate and the driving part thereof is significantly reduced, and the cost is lower;

[0014] 2. The rotating connection position of the leg plate and the foot plate forms the highest point of supporting the mattress, which is consistent with the position of the thigh and the lower leg of the human body;

[0015] 3. The driving part (the first electric cylinder) of the leg plate and the foot plate is transferred from the leg plate to the foot plate position, when the foot plate is lifted, the first electric cylinder drives the connecting rod one to rotate upward, at the same time, the second quadrilateral connecting rod mechanism constituted by the connecting rod three, the leg plate, the foot plate and the connecting rod one is unfolded, so as to drive the leg plate and the foot plate to rotate around the rotating connection points of the two, which is more labor-saving. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is a lateral view of the present application.

[0017] Fig. 2 is a perspective view of the present application.

[0018] Fig. 3 is a perspective view of the first electric cylinder and the movable connecting rod group.

[0019] Fig. 4 is a schematic view of the first foldable support, the second foldable support and the movable connecting rod group in the folded and contracted state.

[0020] Fig. 5 is a folding process schematic view.

[0021] Fig. 6 is a state view after folding. DETAILED DESCRIPTION

[0022] The application is further illustrated below in conjunction with the accompanying drawings. Figs. 1-6 and specific embodiments.

[0023] As Figs. 1-3 shown, a three-section folding electric bed comprises a bed board part and a bed frame 8, the bed board part comprises a hip board 13, a leg board 6 and a foot board 5, a first electric cylinder 1 and an electric cylinder support frame rotatably connected to one end of the first electric cylinder 1 are arranged below the leg board 6 and the foot board 5, a movable link set is arranged between the first electric cylinder 1 and the leg board 6 and the foot board 5, and the other end of the first electric cylinder 1 is in transmission connection with the movable link set to drive the leg board 6 and the foot board 5 to move up and down.

[0024] When the leg part of the human body is lifted, the leg board 6 is completely separated from the hip board 13, that is, a certain gap is left between the two, and the leg board 6 is inclined upward by a preset angle relative to the hip board 13. That is, the lifting angle and position of the leg board 6 are consistent with those of a conventional electric bed, and the overall bed surface of the whole bed can still form a relatively complete lifted bed surface, realizing the same supporting effect on the mattress as the conventional electric bed, thereby significantly reducing the manufacturing and assembly difficulty of the leg board 6 and its driving part, and the cost is lower.

[0025] In the flat state, the leg board 6 and the hip board 13 are separated from each other to prevent mutual interference, and the movable link set is in a retracted state.

[0026] The electric bed further comprises a second electric cylinder 9 and a second foldable support 10 which can be folded up and down, one end of the second electric cylinder 9 rotatably supports the back board 12, the other end of the second foldable support 10 is rotatably connected to the second electric cylinder 9, and the electric cylinder support frame of the first electric cylinder 1 is arranged as a first foldable support 7 which can be folded up and down.

[0027] The whole bed body is divided into three relatively foldable parts along the bed length direction, and in the packaging state, the whole bed body is folded into a rectangular frame structure, and the movable link set, the first foldable support 7 and the second foldable support 10 are all in a retracted state. Before folding, after all the bed legs 11 are removed, the whole bed body presents a flat structure, and then is folded to form a rectangular frame structure, as Figs. 4-6 shown, the foot board 5, the leg board 6 and the bed frame part thereof constitute a first unit, the hip board 13 and the bed frame part thereof constitute a second unit, and the back board 12 and the bed frame part thereof constitute a third unit, and the three units are stacked one on top of another to form a rectangular frame structure.

[0028] As Fig. 1 , 3 shown, the above movable link set comprises:

[0029] The first four-bar linkage mechanism composed of connecting rod one 2 and connecting rod two 3 is in transmission connection with the first electric cylinder 1, the two ends of connecting rod one 2 are respectively in rotary connection with the bed frame 8 and the foot plate 5, and the two ends of connecting rod two 3 are respectively in rotary connection with the bed frame 8 and the foot plate 5.

[0030] Connecting rod three 4, the two ends of connecting rod three 4 are respectively in rotary connection with the leg plate 6 and the rod body of connecting rod one 2, and the end of connecting rod three 4 is in rotary connection with the middle part of the rod body of connecting rod one 2.

[0031] In use, the first electric cylinder 1 is used to drive connecting rod one 2 to rotate upward, the leg plate 6 is driven to move by the linkage effect of the movable connecting rod group while the foot plate 5 is jacked up, when the leg is lifted, the first electric cylinder 1 is used to drive connecting rod one 2 to rotate upward, at the same time, the second four-bar linkage mechanism composed of connecting rod three 4, the leg plate 6, the foot plate 5 and connecting rod one 2 is unfolded, so as to drive the leg plate 6 and the foot plate 5 to rotate around the rotary connection points of the two, which is more labor-saving.

[0032] The first four-bar linkage mechanism is an irregular four-bar linkage mechanism, the length of connecting rod one 2 is greater than the length of connecting rod two 3, in the embodiment, the first electric cylinder 1 is in transmission connection with connecting rod one 2, connecting rod one 2 is closer to the leg plate 6 than connecting rod two 3, and the fulcrum of connecting rod one 2 and the fulcrum of connecting rod two 3 are at the same height or close to the same height, so that the foot plate 5 can be deflected downward by a certain angle after being lifted, with the rotary connection points of connecting rod one 2 and connecting rod two 3 as the reference, which is consistent with the deflection angle of the thigh and the calf after the leg is lifted, so as to meet the ergonomic principle.

[0033] The second four-bar linkage mechanism composed of connecting rod three 4, the leg plate 6, the foot plate 5 and connecting rod one 2 is also an irregular four-bar linkage mechanism, when the leg of the human body is lifted, the leg plate 6 and the foot plate 5 are mutually inclined to form a V-shaped opening downward, so that the rotary connection points of the two constitute the highest position points of the two, which is consistent with the position of the thigh and the calf of the human body, and the customer experience is more comfortable.

[0034] In order to optimize the structure design, the above-mentioned connecting rod one 2 is provided with a pair and is arranged on the left and right sides of the bed body to respectively rotate and support the left and right sides of the lower plate surface of the foot plate 5, a cross rod 15 is arranged between the two connecting rod ones 2 to fixedly connect the two, the middle part of the cross rod 15 is fixed with a motor support 14, the motor support 14 is in rotary connection with the end of the first electric cylinder 1, and the structure is strengthened to improve the carrying capacity;

[0035] The above-mentioned connecting rod two 3 is provided with a pair and is arranged on the left and right sides of the bed body to respectively rotate and support the left and right sides of the lower plate surface of the foot plate 5.

[0036] The above-mentioned connecting rod three 4 is provided with a pair and is arranged on the left and right sides of the bed body to respectively rotate and support the left and right sides of the lower plate surface of the leg plate 6, and the two connecting rod threes 4 are respectively in rotary connection with the two connecting rod ones 2.

[0037] The distance between the two connecting rods two 3 is greater than the distance between the two connecting rods one 2, so as to optimize the supporting effect and make the support more stable.

[0038] The above is the preferred embodiment of the present application, and those skilled in the art can make various transformations or improvements on the basis of this, and these transformations or improvements shall belong to the protection scope of the present application without departing from the general concept of the present application.

Claims

1. A three-section folding electric bed, comprising a bed plate portion and a bed frame (8), wherein the bed plate portion comprises a buttocks plate (13), a leg plate (6) and a foot plate (5), wherein a first electric cylinder (1) and an electric cylinder support frame rotatably connected to one end of the first electric cylinder (1) are provided below the leg plate (6) and the foot plate (5), wherein a movable connecting rod group is provided between the first electric cylinder (1) and the leg plate (6) and the foot plate (5), and the other end of the first electric cylinder (1) is transmission-connected to the movable connecting rod group to drive the leg plate (6) and the foot plate (5) to move up and down; Its characteristics are: When the human body's legs are lifted, the leg plate (6) is completely separated from the hip plate (13) and tilted upward at a preset angle relative to the hip plate (13); The movable connecting rod group comprises: a first quadrilateral connecting rod mechanism composed of a connecting rod 1 (2) and a connecting rod 2 (3), which is transmission-connected to a first electric cylinder (1), wherein the two ends of the connecting rod 1 (2) are respectively rotationally connected to a bed frame (8) and a foot plate (5), and the two ends of the connecting rod 2 (3) are respectively rotationally connected to a bed frame (8) and a foot plate (5); and a connecting rod 3 (4), wherein the two ends of the connecting rod 3 (4) are respectively rotationally connected to a leg plate (6) and a rod body of the connecting rod 1 (2).

2. The three-section folding electric bed according to claim 1, characterized in that: The first quadrilateral linkage mechanism is an irregular quadrilateral mechanism, the length of the first linkage (2) is greater than the length of the second linkage (3), and the first linkage (2) is closer to the leg plate (6) than the second linkage (3).

3. The three-section folding electric bed according to claim 1, characterized in that: The connecting rod three (4), the leg plate (6), the foot plate (5) and the connecting rod one (2) constitute a second quadrilateral connecting rod mechanism; when the human leg is lifted, the leg plate (6) and the foot plate (5) are tilted relative to each other to form a V-shape with the opening downward, so that the rotation connection point of the two constitutes the highest position point of the two.

4. The three-section folding electric bed according to claim 3, characterized in that: The end of the connecting rod three (4) is rotatably connected to the middle part of the rod body of the connecting rod one (2).

5. The three-section folding electric bed according to claim 2, characterized in that: The first electric cylinder (1) is in transmission connection with connecting rod 1 (2).

6. The three-section folding electric bed according to claim 5, characterized in that: The connecting rods (2) are provided in a pair and are respectively located on the left and right sides of the bed body to respectively rotate and support the left and right sides of the lower plate surface of the foot plate (5). A cross bar (15) is provided between the two connecting rods (2) to fixedly connect the two. A motor support (14) is fixed to the middle of the cross bar (15). The motor support (14) is rotatably connected to the end of the first electric cylinder (1); The second connecting rod (3) is provided with a pair and is located on the left and right sides of the bed body to respectively rotate and support the left and right sides of the lower plate surface of the foot plate (5); The connecting rod three (4) is provided in a pair and is located on the left and right sides of the bed body to respectively rotate and support the left and right sides of the lower plate surface of the leg plate (6). The two connecting rods three (4) are respectively rotated to connect the two connecting rods one (2).

7. The three-section folding electric bed according to claim 6, characterized in that: The spacing between the two connecting rods 2 (3) is greater than the spacing between the two connecting rods 1 (2).

8. The three-section folding electric bed according to claim 1, characterized in that: In the flattened state, the leg plate (6) and the hip plate (13) are separated from each other, and the movable link group is in a contracted state.

9. The three-section folding electric bed according to any one of claims 1 to 8, characterized in that: It also includes a second electric cylinder (9) and a second foldable bracket (10) that can be folded up and down, one end of the second electric cylinder (9) rotatably supports the back plate (12), the second foldable bracket (10) is rotatably connected to the other end of the second electric cylinder (9), and the electric cylinder support frame of the first electric cylinder (1) is set as a first foldable bracket (7) that can be folded up and down; The entire bed body is divided into three relatively foldable parts along the length of the bed. In the packaging state, the entire bed body is folded into a rectangular frame structure, and the movable connecting rod group, the first foldable bracket (7) and the second foldable bracket (10) are all in a retracted state.

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