An automatically adjustable electric bed arrangement

Abstract

The application discloses an automatically adjustable electric bed device, which comprises a bed frame, a moving frame capable of sliding forward and backward relative to the bed frame, a bed board set arranged on the moving frame, and a movable driving component for driving the bed board set to move; the back plate unit is divided into a back plate and a waist plate, one side of the waist plate is provided as a rotating supporting point, the other side of the waist plate is rotatably connected with the back plate and serves as a rotating supporting point of the back plate, and the back plate and the waist plate are respectively rotatably connected with a first supporting rod and a second supporting rod; the movable driving component comprises a front driving cylinder and a movable connecting rod mechanism, one end of the front driving cylinder is hinged to the bed frame, the other end of the front driving cylinder is rotatably connected with the back plate and the waist plate through the movable connecting rod mechanism, and when the back plate and the waist plate are rotated upward to a certain angle, the back plate can be continuously rotated upward by a certain angle relative to the waist plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric bed, in particular to an automatic adjustable electric bed device. BACKGROUND

[0002] There is an electric bed in the prior art, which comprises a bed frame, a moving frame capable of sliding forward and backward relative to the bed frame, a bed board set arranged on the moving frame, and a movable driving component for driving the bed board set to act, wherein the bed board set comprises a back plate unit capable of being driven by the movable driving component to flip up and down, and the moving frame moves forward and backward along the length direction of the bed frame when the back plate unit flips.

[0003] The back plate of the electric bed is directly connected with the hip plate, and when the back plate is raised, the electric cylinder of the moving frame drives the back plate to flip up, if the distance to the wall is too small, the included angle between the supporting connecting rod (supporting and rotatingly connecting the back plate) and the back plate is too small, and when it is needed to be flat (in the case of no load), the back plate cannot flip down by relying on the dead weight, and the back plate needs to be flat by relying on the driving of the motor, which has the safety hazard of pinching hand; and the distance required by the moving frame to move is large, which has high requirements on the installation space of the motor and the propulsion speed of the motor, and increases the cost. SUMMARY

[0004] The present application aims to provide an automatic adjustable electric bed device to solve the problems in the prior art.

[0005] The present application is achieved in the following way: an automatic adjustable electric bed device, comprising a bed frame, a moving frame capable of sliding forward and backward relative to the bed frame, a bed board set arranged on the moving frame, and a movable driving component for driving the bed board set to act, wherein the bed board set comprises a back plate unit capable of being driven by the movable driving component to flip up and down.

[0006] The back plate unit is divided into a back plate and a waist plate, one side of the waist plate is provided as a rotating support point, the other side of the waist plate is rotatably connected with the back plate and serves as a rotating support point of the back plate, and the back plate and the waist plate are respectively rotatably connected with first and second supporting rods for rotating support.

[0007] The movable driving component comprises a front driving cylinder and a movable connecting rod mechanism, one end of the front driving cylinder is hingedly connected with the bed frame, the other end of the front driving cylinder is rotatably connected with the back plate and the waist plate through the movable connecting rod mechanism, and when the back plate and the waist plate are rotated to a certain angle, the front driving cylinder can drive the back plate to continue to rotate relative to the waist plate by a certain angle.

[0008] Further, when the back plate is flipped up to a back-raising state, the included angle between the back plate and the first supporting rod is smaller than the included angle between the waist plate and the second supporting rod.

[0009] Furthermore, the movable linkage mechanism includes a movable support frame and a back link; the movable support frame has three rotatable connection positions arranged in a triangle, namely: a first hinge point formed by the end of the front drive cylinder rotatably connecting to the movable support frame; a second hinge point formed by the movable support frame rotatably connecting to one end of the back link, the other end of the back link rotatably connecting to and supporting the back plate; and a third hinge point formed by the movable support frame rotatably connecting to the lower side of the waist plate, the third hinge point constituting the rotation fulcrum of the movable support frame; wherein, during driving, the front drive cylinder abuts against the first hinge point so that the second hinge point rotatably supports the lower side of the back plate through the back link, and the third hinge point rotatably supports the lower side of the waist plate.

[0010] The beneficial effects of this invention are as follows:

[0011] 1. The back panel unit is divided into a back panel and a waist panel. The back panel and waist panel are respectively formed by a back linkage and a movable support frame to form a rotating support base. In the upright position, only the front drive cylinder is needed to drive the movable support frame to generate sufficient initial torque, so that the movable support frame and the back linkage can work together to lift the back panel and waist panel upwards. The back panel can continue to rotate upwards at a certain angle relative to the waist panel, so that the back panel has a larger tilt angle, which conforms to the back curve of the human body when the back is raised.

[0012] 2. When the back panel unit is flipped upwards to the raised position, the angle between the back panel and the first support rod is smaller than the angle between the waist panel and the second support rod. This allows the waist panel and back panel to flip downwards by their own weight when they need to be flat (without load), reducing the power consumption of the front drive cylinder and ensuring the safety of the working process. Attached Figure Description

[0013] Figure 1 This is the three-dimensional representation of the present invention. Figure 1 .

[0014] Figure 2 This is the three-dimensional representation of the present invention. Figure 2 .

[0015] Figure 3 This is a schematic diagram showing the bed board assembly in a flat position.

[0016] Figure 4 This is a schematic diagram showing the backplate unit being raised.

[0017] Figure 5 This is a diagram showing the back panel raised upwards.

[0018] Figure 6 This is a schematic diagram showing the lumbar support frame flipped upwards. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The front-to-back direction referred to herein is based on the length of the bed. Furthermore, all power components mentioned herein, such as the front drive cylinder 8, the rear drive cylinder 22, and the waist support telescopic cylinder 18, are electric cylinders; pneumatic cylinders or other linear drive mechanisms are not excluded.

[0020] like Figure 1 , 2 As shown, an automatically adjustable electric bed device includes a bed frame 7 and a movable frame 6 that can slide back and forth relative to the bed frame 7, a bed board assembly disposed on the movable frame 6, and a movable drive component that drives the bed board assembly to move.

[0021] In this embodiment, the bed board assembly consists of a backrest unit, a hip board 3, a leg board 4, and a foot board 5, arranged from front to back. The hip board 3 is fixed on the movable frame 6. The backrest unit is driven by the movable drive component to flip up and down. At the same time, the movable frame 6 also moves along with it, moving towards the wall 24.

[0022] This embodiment is provided with a rear drive cylinder 22 and a stabilizing link 23. The two ends of the rear drive cylinder 22 are rotatably connected to the moving frame 6 and the leg plate 4, respectively. One end of the stabilizing link 23 is rotatably connected to the moving frame 6, and the other end is rotatably connected to the foot plate 5. The stabilizing link 23, the leg plate 4, and the foot plate 5 form a parallelogram linkage mechanism, which is driven by the rear drive cylinder 22 to move up and down, thereby changing the position of the thigh and calf of the human body.

[0023] Combination Figures 3-6 As shown, the back panel unit is divided into a back panel 1 and a waist panel 2. One side of the waist panel 2 is set as a pivot point, and the other side is rotatably connected to the back panel 1 and serves as the pivot point of the back panel 1. The back panel 1 and the waist panel 2 are respectively rotatably connected to a first support rod 15 and a second support rod 16, which play a role in rotational support and are rotatably connected to the bed frame 7.

[0024] The aforementioned active drive components include a front drive cylinder 8 and an active linkage mechanism. One end of the front drive cylinder 8 is hinged to the bed frame 7, and the other end is rotatably connected to the back plate 1 and the waist plate 2 through the active linkage mechanism. When the back plate 1 and the waist plate 2 rotate upward together to a certain angle, the back plate 1 can be driven to continue rotating upward relative to the waist plate 2 at a certain angle. The distance between the back plate 1 and the wall 24 is less than 50mm.

[0025] When the back panel unit is flipped upwards to the raised position, the angle between the back panel 1 and the first support rod 15 is smaller than the angle between the waist panel 2 and the second support rod 16. This allows the waist panel 2 and the back panel 1 to flip downwards under their own weight when they need to be flattened (without load), reducing the power consumption of the front drive cylinder 8. For safety reasons, electric beds generally use motors that only have pushing force and no pulling force. Therefore, the back panel unit needs to fall and flatten under its own weight. The angle between the waist panel 2 and the second support rod 16 is greater than the angle between the back panel 1 and the first support rod 15. This is mainly to allow the entire back panel 1 to move a greater distance towards the wall under the same motor stroke, while the moving frame 6 needs to move a relatively smaller distance, and it is also convenient to lower and flatten the bed board assembly.

[0026] The front side of the aforementioned bed frame 7 is fixed with a pair of left and right distributed bed board supports 17. The first support rod 15 is provided with a pair and is rotatably connected to the two bed board supports 17 respectively. The rotatable connection point of the first support rod 15 and the bed board supports 17 constitutes the rotation fulcrum of the first support rod 15. When the back panel 1 is in a flat state, the two bed board supports 17 respectively support the left and right parts of the lower side of the back panel 1. At this time, the bed board assembly and the bed frame 7 are parallel to each other.

[0027] In order to optimize the support effect on the back panel 1 and the waist panel 2, the rotation connection point of the second support rod 16 and the bed frame 7 constitutes the rotation fulcrum of the second support rod 16, and the rotation fulcrum of the first support rod 15 is higher than the rotation fulcrum of the second support rod 16.

[0028] The aforementioned movable linkage mechanism includes a movable support frame 9 and a back linkage 13.

[0029] The aforementioned movable support frame 9 has three rotating connection positions arranged in a triangle. The three rotating connection positions are as follows:

[0030] The first hinge point 10 is formed by the rotatable connection between the end of the aforementioned front drive cylinder 8 and the movable support frame 9.

[0031] The movable support frame 9 is rotatably connected to one end of the back connecting rod 13 to form a second hinge point 11, and the other end of the back connecting rod 13 is rotatably connected to and supports the back plate 1.

[0032] The movable support frame 9 is rotatably connected to the lower side of the waist plate 2 to form a third hinge point 12, which constitutes the rotation fulcrum of the movable support frame 9.

[0033] During driving, the front drive cylinder 8 abuts against the first hinge point 10 so that the second hinge point 11 rotates and supports the lower side of the back plate 1 through the back connecting rod 13, and the third hinge point 12 rotates and supports the lower side of the waist plate 2.

[0034] like Figure 3As shown, the third hinge point 12 is the closest position of the movable support frame 9 to the surface of the waist plate 2. In the initial state where the back plate 1 and the waist plate 2 are flat, the third hinge point 12 is at the highest position of the movable support frame 9 and is relatively close to the front side of the waist plate 2. The first hinge point 10 and the second hinge point 11 are at the bottom of the movable support frame 9, and the height of the second hinge point 11 is between the first hinge point 10 and the third hinge point 12. The second hinge point 11 is relatively forward, and the first hinge point 10 is relatively backward. The back connecting rod 13 is inclined upward relative to the second hinge point 11. The rotation fulcrum of the back connecting rod 13 is the second hinge point 11. The support point of the back connecting rod 13 is at a high position and is relatively close to the front edge of the back plate 1. The back connecting rod 13 has sufficient length. With this setting, the thrust arm of the front drive cylinder 8 can reach its maximum.

[0035] A contact rod 14, parallel to the width of the bed, is fixedly provided on the lower side of the waist plate 2, near the third hinge point 12. An abutment groove 9a is provided on one side of the movable support frame 9, formed by the second hinge point 11 and the third hinge point 12. After the back plate 1 rotates upwards relative to the waist plate 2 at a certain angle, the inner wall of the abutment groove 9a abuts against and lifts the contact rod 14 under the pushing force of the front drive cylinder 8, thereby locking the angle between the back plate 1 and the waist plate 2. The aforementioned abutment groove 9a is a V-shaped groove, with its corner side used to support and abut against the contact rod 14.

[0036] Through the above methods, it is possible to achieve that "when the waist plate 2 rotates upward to a certain angle, the back plate 1 can be driven to continue to rotate upward relative to the waist plate 2 by a certain angle".

[0037] like Figures 3-6 As shown, the first stage of the back panel unit flipping upward: When the bed board assembly is in a flat state, the load resistance arm is large, so the load torque is large. Therefore, the power arm of the front drive cylinder 8 needs to be large when it is first lifted, and the speed can be slower. At this time, the movable support frame 9 and the back connecting rod 13 play a greater role. Through the contact and support of the two, the back panel 1 and the waist panel 2 are flipped upward by a certain angle as a whole, so that the back panel 1 and the waist panel 2 are flush with each other and have the same tilt angle. At this time, there is a certain distance between the abutting groove 9a of the movable support frame 9 and the abutting rod 14.

[0038] The second stage of the back panel unit flipping upwards: Then, faster wall-mounted movement and quicker changes in the backrest angle are needed. The backrest linkage 13 plays a more significant role. Using the third hinge point 12 as a fulcrum, driven by the front drive cylinder 8, the movable support frame 9 drives the backrest linkage 13 to continue rotating upwards. The backrest linkage 13 then drives the back panel 1 to continue rotating upwards relative to the lumbar panel 2 by a certain angle. Therefore, overall, the lumbar panel 2 only rises a small angle, while the backrest 1 can rise to the same large angle as a regular bed.

[0039] From the above two stages of motion, it can be seen that the back link 13 and the third hinge point 12 are positioned relatively high to increase the angle between the first support rod 15 and the back plate 1. However, this results in the back link 13 initially having a very small angle with the horizontal plane (e.g., Figure 3 As shown, if there is only the back linkage 13, the thrust required by the front drive cylinder 8 will be very large. Therefore, the movable support frame 9 needs to bear more of the lifting effect in the initial stage in order to smoothly carry out the first stage of starting action.

[0040] To improve lumbar support performance, the aforementioned lumbar plate 2 is provided with a clearance opening 2a and a lumbar support component, with a bracket fixed to its lower side. The lumbar support component includes:

[0041] The load-bearing base 21 is fixedly connected to the support body of the waist plate 2 and extends downward appropriately;

[0042] A rotatable and movable waist support frame 19 that can move through the clearance opening 2a. The rotation axis of the waist support frame 19 is rotatably connected to the support body of the waist plate 2. The waist support frame 19 has a flat frame structure as a whole.

[0043] The waist support telescopic cylinder 18 is rotatably connected at both ends to the lower end of the load-bearing base 21 and the waist support frame 19, so that it can be started and the waist support frame 19 can be flipped upward smoothly to support the waist.

[0044] In this design, when changing the height of the lumbar support, the load-bearing base 21 is used as the support base for the lumbar support telescopic cylinder 18. The lumbar support telescopic cylinder 18 performs corresponding telescopic movements to change the elevation angle of the lumbar support frame 19, thereby changing the height of the lumbar support and making the user's lumbar region more comfortable.

[0045] To better support the human waist, the lumbar support frame 19 is provided with a lumbar support rod 20 on the support side to directly support the human waist. The lumbar support rod 20 is parallel to the width of the bed and is preferably round, which can reduce the frictional resistance generated when in contact with the mattress above.

[0046] The supporting side of the aforementioned lumbar support frame 19 is located behind the rotation axis of the lumbar support frame 19, thereby facilitating the support of the waist. The aforementioned lumbar support frame 19 and its lumbar support rod 20 are placed on the support body of the lumbar plate 2 when in the flat state.

[0047] The above are preferred embodiments of the present invention. Those skilled in the art can make various modifications or improvements based on these embodiments. Without departing from the overall concept of the present invention, such modifications or improvements should fall within the scope of protection claimed by the present invention.

Claims

1. An automatically adjustable electric bed device, comprising a bed frame (7) and a movable frame (6) slidable back and forth relative to the bed frame (7), a bed board assembly disposed on the movable frame (6), and a movable drive component for driving the bed board assembly, the bed board assembly including a back panel unit that is driven by the movable drive component to rotate up and down, characterized in that: The back panel unit is divided into a back panel (1) and a waist panel (2). One side of the waist panel (2) is set as a pivot point, and the other side is rotatably connected to the back panel (1) and serves as the pivot point of the back panel (1). The back panel (1) and the waist panel (2) are respectively rotatably connected to a first support rod (15) and a second support rod (16) that provide rotational support and are rotatably connected to the bed frame (7). The active drive component includes a front drive cylinder (8) and an active linkage mechanism. One end of the front drive cylinder (8) is hinged to the bed frame (7), and the other end is rotatably connected to the back plate (1) and the waist plate (2) through the active linkage mechanism. When the back plate (1) and the waist plate (2) rotate upward to a certain angle, the back plate (1) can be driven to continue to rotate upward relative to the waist plate (2) by a certain angle. When the back plate (1) is flipped upward to the back position, the angle between the back plate (1) and the first support rod (15) is smaller than the angle between the waist plate (2) and the second support rod (16); The waist plate (2) is provided with a clearance opening (2a) and a waist support component, and a bracket is fixed to its lower side. The waist support component includes: A load-bearing base (21) is fixedly connected to the support body of the waist plate (2); A rotatable and movable waist support frame (19) that can move through the relief opening (2a), the rotation axis of the waist support frame (19) being rotatably connected to the support body of the waist plate (2); A waist support telescopic cylinder (18) is provided, with its two ends rotatably connected to a load-bearing base (21) and a waist support frame (19).

2. The automatically adjustable electric bed device according to claim 1, characterized in that: The movable linkage mechanism includes a movable support frame (9) and a back linkage (13); The movable support frame (9) has three rotating connection positions arranged in a triangle. The three rotating connection positions are: The end of the front drive cylinder (8) is rotatably connected to the movable support frame (9) to form a first hinge point (10); The movable support frame (9) is rotatably connected to one end of the back connecting rod (13) to form a second hinge point (11), and the other end of the back connecting rod (13) is rotatably connected to and supports the back plate (1); The movable support frame (9) is rotatably connected to the lower side of the waist plate (2) to form a third hinge point (12), which constitutes the rotation fulcrum of the movable support frame (9); During driving, the front drive cylinder (8) abuts against the first hinge point (10) so that the second hinge point (11) rotates to support the lower side of the back plate (1) via the back link (13), and the third hinge point (12) rotates to support the lower side of the waist plate (2).

3. The automatically adjustable electric bed device according to claim 2, characterized in that: The third hinge point (12) is the position of the movable support frame (9) closest to the surface of the waist plate (2).

4. The automatically adjustable electric bed device according to claim 3, characterized in that: With the back plate (1) and waist plate (2) in their initial flat position, in the movable support frame (9), the third hinge point (12) is at the highest position of the movable support frame (9), the first hinge point (10) and the second hinge point (11) are at the bottom of the movable support frame (9), and the height of the second hinge point (11) is between the first hinge point (10) and the third hinge point (12). The second hinge point (11) is relatively forward, and the back link (13) is inclined upward relative to the second hinge point (11).

5. The automatically adjustable electric bed device according to claim 1, characterized in that: The lumbar support frame (19) has a lumbar support rod (20) on its supporting side that directly supports the human waist. The lumbar support rod (20) is parallel to the width of the bed.

6. The automatically adjustable electric bed device according to claim 1, characterized in that: The supporting side of the waist support frame (19) is located behind the rotation axis of the waist support frame (19).

7. The automatically adjustable electric bed device according to claim 5, characterized in that: When the waist support frame (19) and its waist support rod (20) are in a flat position, they are placed on the support body of the waist plate (2).

8. The automatically adjustable electric bed device according to claim 1, characterized in that: The front side of the bed frame (7) is fixed with a pair of left and right distributed bed board supports (17). The first support rod (15) is provided with a pair and is rotatably connected to the two bed board supports (17). The rotatable connection point of the first support rod (15) and the bed board supports (17) constitutes the rotation fulcrum of the first support rod (15). When the back panel (1) is in a flat state, the two bed board supports (17) support the left and right parts of the lower side of the back panel (1) respectively. The rotational connection point between the second support rod (16) and the bed frame (7) constitutes the rotational fulcrum of the second support rod (16), and the rotational fulcrum of the first support rod (15) is higher than the rotational fulcrum of the second support rod (16).

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