Waist pushing structure and electric bed

Abstract

The utility model provides a waist pushing structure and an electric bed. The waist pushing structure comprises a waist pushing supporting seat, and a first sliding groove with a downward opening is formed in the lower end of the waist pushing supporting seat; the waist pushing base is located below the waist pushing supporting seat, and a second sliding groove with an upward opening is formed in the upper end of the waist pushing base; the scissor type supporting frame comprises a first supporting plate and a second supporting plate, the upper end of the first supporting plate is connected with a first rolling wheel, the first rolling wheel is arranged in the first sliding groove in a rolling fit mode, and the lower end of the first supporting plate is hinged to the waist pushing base; the upper end of the second supporting plate is hinged to the waist pushing supporting seat, the lower end of the second supporting plate is connected with a second rolling wheel, and the second rolling wheel is in rolling fit in the second sliding groove; the electric push rod is horizontally connected to the waist pushing base, and the free end of the electric push rod is connected with the lower end of the second supporting plate. According to the waist pushing structure and the electric bed, the lifting mechanism acting on the waist pushing plate is stable in lifting and high in bearing capacity, and the use comfort of a user is high.

Description

Technical Field

[0001] This utility model relates to the field of electric bed technology, and more specifically, to a lumbar support structure and an electric bed. Background Technology

[0002] As people's living standards continue to improve, electric beds are gradually gaining popularity due to their comfort and convenience, as people pursue a higher quality of life. A typical electric bed consists of multiple hinged panels, namely the head and back panel, buttocks panel, thigh panel, and calf panel. A linear motor drives the corresponding panels to rise and fall to meet people's needs for different sleeping positions.

[0003] However, most electric beds currently available do not provide lumbar support when the user is in a semi-reclining position against the backrest, leaving the lower back in a naturally curved state, which can easily cause lower back discomfort over time.

[0004] Existing related technologies, such as the published patent CN118948060A, disclose a bed frame and electric bed with a lumbar support function. The lumbar support device of this bed frame includes: horizontally extending transverse guide rails fixed to both sides of the main frame; a movable support movably configured on the transverse guide rails; a lifting drive component fixed to the movable support; a lifting connecting rod with one end hinged to the output end of the lifting drive component and the other end hinged to the bottom of the lumbar support plate; and a guide rod with one end fixed to the lumbar support plate and movable up and down in a guide hole of the movable support. The lifting drive component is a push rod motor, which drives the lifting connecting rod to swing, thereby causing the lumbar support plate to move up and down. In this related technology, relying solely on a single lifting connecting rod for support results in insufficient stability, especially in the case of large-sized bed frames. The force exerted on the lumbar region by the lumbar support device is uneven, leading to a poor user experience. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome at least one of the defects of the above-mentioned related technologies and provide a lumbar push structure and an electric bed, wherein the lifting mechanism acting on the lumbar push plate has smooth lifting and lowering, strong load-bearing capacity, and high user comfort.

[0006] The technical solution of this utility model is to provide a waist-pushing structure: including...

[0007] A lumbar support base is used to install a lumbar push plate, and the lower end of the lumbar support base is provided with a first sliding groove with the opening facing downward.

[0008] A waist push base is located below the waist push support, and the upper end of the waist push base is provided with a second sliding groove with the opening facing upward;

[0009] At least one scissor-type support frame, the scissor-type support frame including a first support plate and a second support plate, the upper end of the first support plate is connected to a first roller, and the first roller is rolled in a first groove, the lower end of the first support plate is hinged to the waist push base; the upper end of the second support plate is hinged to the waist push support seat, the lower end of the second support plate is connected to a second roller, and the second roller is rolled in a second groove;

[0010] An electric actuator is horizontally connected to the waist-push base, and the free end of the electric actuator is connected to the lower end of the second support plate.

[0011] As an improvement, first elongated through holes are symmetrically opened on both side walls of one end of the first slide groove, and a first rotating shaft is connected to the upper end of the first support plate. The two ends of the first rotating shaft are respectively movably fitted into the two first elongated through holes, and the first roller is fitted on the first rotating shaft. Second elongated through holes are symmetrically opened on both side walls of one end of the second slide groove, and a second rotating shaft is connected to the lower end of the second support plate. The two ends of the second rotating shaft are respectively movably fitted into the two second elongated through holes, and the second roller is fitted on the second rotating shaft.

[0012] In a further improvement, the scissor-type support frame consists of two side-by-side arranged along the length of the waist-push base. The waist-push base is connected to a sliding sleeve that can slide along its length. The lower ends of the second support plates of the two scissor-type support frames are respectively hinged to the two ends of the sliding sleeve. The free end of the electric push rod is connected to the sliding sleeve.

[0013] In a further improvement, the sliding sleeve is a U-shaped sleeve with the opening facing upwards. The U-shaped sleeve is slidably fitted on the outside of the waist push base, and the two ends of the second rotating shaft at the lower end of the two second support plates are respectively connected to the two side walls at both ends of the U-shaped sleeve.

[0014] In a further improvement, the lumbar support seat and the lumbar base have the same structure, and the two sides of the lumbar base are respectively connected to a fixing frame for connecting to the bed frame or bed board, and the electric push rod is connected to the fixing frame.

[0015] Preferably, the first roller and the second roller are rubber rollers.

[0016] Another technical solution of this utility model is: providing an electric bed, including a bed frame, a head and back board, and a hip board. The hip board is fixedly connected to the bed frame, and one end of the head and back board is rotatably connected to the hip board. The bed frame is connected to a drive assembly for driving the head and back board to rise and fall. It also includes the aforementioned lumbar support structure. The head and back board has a clearance through hole on the side near the hip board. The lumbar support structure is connected to the lower surface of the head and back board through the fixing frame. The lumbar support seat can extend out of the clearance through hole, and the upper end of the lumbar support seat is connected to a lumbar support plate that matches the clearance through hole.

[0017] In summary, compared with related technologies, the lumbar support structure and electric bed structure of this utility model have the following advantages:

[0018] First, in the waist push structure of this utility model, a scissor-type support frame is used as the driving mechanism for lifting and lowering the waist push plate. Among the two support plates that are hinged in an X shape, the upper and lower connection points on one side are movable in the horizontal direction. The movable connection points are supported by rollers, which can not only achieve horizontal sliding, but also ensure stable and reliable vertical support force and is not easy to wear. In addition, the rubber rollers can make the movable points achieve better noise reduction.

[0019] Secondly, to further ensure stable support, a two-scissor support frame structure is adopted. The lifting and lowering actions of the two scissor support frames are consistent through a sliding sleeve structure. That is, only one electric actuator is needed to cooperate with the sliding sleeve to realize the synchronous lifting and lowering of the two scissor support frames, simplifying the structure and reducing production costs.

[0020] On another note, in the electric bed structure of this utility model, the lumbar support structure is connected to the head and backrest bed board. That is, while the head and backrest bed board is raised and lowered to adjust its angle, the lumbar support structure is adjusted synchronously with it. In other words, the movement direction of the lumbar support board is always perpendicular to the head and backrest bed board. This ensures that when the user is in a semi-reclined position and leans against the head and backrest bed board at any angle, the lumbar support board can push against the waist at a comfortable angle, ensuring a good lumbar support effect and improving the user's comfort.

[0021] Other improvements and advantages of this invention will be set forth in the detailed description that follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures particularly pointed out in the description and drawings. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the electric bed of this utility model;

[0023] Figure 2 for Figure 1 Enlarged structural diagram at point X in the diagram;

[0024] Figure 3 This is a three-dimensional structural diagram of the waist-pushing structure of this utility model;

[0025] Figure 4 This is another perspective view of the waist push structure of this utility model;

[0026] Figure 5 This is another perspective view of the waist push structure of this utility model;

[0027] Figure 6 This is another perspective view of the waist-pushing structure of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Waist support seat; 2. First slide groove; 3. Waist support base; 4. Second slide groove; 5. First support plate; 6. Second support plate; 7. First roller; 8. Second roller; 9. Electric actuator; 10. First elongated through hole; 11. Second elongated through hole; 12. Sliding sleeve; 13. Fixing frame; 1301. Corner bracket; 1302. Square tube; 14. Bed frame; 15. Head and backrest bed board; 16. Hiprest bed board; 17. Clearance through hole; 18. Clearance notch; Detailed Implementation

[0030] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0031] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0032] In this embodiment of the utility model, unless otherwise explicitly specified and limited, the first feature at the "upper end" or "lower end" of the second feature may be in direct contact with the first feature, or indirect contact with the first feature through an intermediate medium. Furthermore, the first feature "below" or "below" the second feature may mean the first feature is directly below or diagonally below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0034] See Figures 3-6 As shown in the figure, this utility model discloses a waist push structure, including a waist push support 1 for mounting a waist push plate. A first sliding groove 2 with a downward opening is provided at the lower end of the waist push support 1. A waist push base 3 is provided below the waist push support 1, and a second sliding groove 4 with an upward opening is provided at the upper end of the waist push base 3. At least one scissor-type support frame is provided between the waist push base 3 and the waist push support 1, which includes a first support plate 5 and a second support plate 6 hinged together in an X-shape. A first roller 7 is connected to the upper end of the first support plate 5, and the first roller 7 rolls within the first sliding groove 2, specifically meaning that the roller rolls against the bottom wall of the first sliding groove 2. The lower end of the first support plate 5 is hinged to the waist push base 3; similarly, the upper end of the second support plate 6 is hinged to the waist push support seat 1, and the lower end of the second support plate 6 is connected to a second roller 8, which rolls within the second sliding groove 4, specifically meaning that the second roller 8 is in contact with the bottom wall of the second sliding groove 4; furthermore, a horizontal electric actuator 9 extending along its length is connected to the waist push base 3, and the free end of the electric actuator 9 is connected to the lower end of the second support plate 6. The extension and retraction of the electric actuator 9 drives the second support plate 6 to rotate, thereby adjusting the distance between the waist push support seat 1 and the waist push base 3, that is, realizing the raising and lowering of the waist push plate. Moreover, in the support frame of this waist push structure, the moving points between the two support plates and the waist push support seat 1 and the waist push base 3 rely on rollers for support, resulting in stronger load-bearing capacity and less wear.

[0035] In this embodiment, preferably, the first roller 7 and the second roller 8 are made of rubber, which can achieve the effect of quiet operation and noise reduction during use, thereby improving user comfort.

[0036] In some other embodiments, a sound-absorbing material may be wrapped around the outside of the metal roller.

[0037] Furthermore, to further consider the stability of the lumbar support board during use, especially in large-scale bed structures where a single support frame is prone to wobbling, this embodiment preferably includes two scissor-type support frames arranged side-by-side along the length of the lumbar support board between the lumbar support seat 1 and the lumbar support base 3. The two scissor-type support frames are driven to rise and fall synchronously by an electric actuator 9, ensuring smooth lifting and lowering of the lumbar support board and providing users with a more stable and reliable lumbar support effect.

[0038] In the above structure, see Appendix Figure 4 and 6To ensure the synchronous operation of the two scissor-type support frames, a sliding sleeve 12 that can slide along its length is connected to the waist push base 3. The lower ends of the second support plates 6 of the two scissor-type support frames are respectively hinged to the two ends of the sliding sleeve 12, and the free end of the electric push rod 9 is connected to the sliding sleeve 12. That is, the synchronous lifting and lowering movement of the two scissor-type support frames can be achieved by the action of one electric push rod 9, which simplifies the structure and reduces the cost.

[0039] In the above structure, the sliding sleeve 12 is a U-shaped sleeve with the opening facing upward. The U-shaped sleeve is slidably fitted on the outside of the waist push base 3. The two ends of the second rotating shaft at the lower end of the two second support plates 6 are respectively connected to the two side walls at both ends of the U-shaped sleeve. That is, the second rotating shaft realizes the coaxial hinge of the second support plate 6, the second roller 8 and the sliding sleeve 12, which simplifies the structure and ensures the consistency of the movement of each component.

[0040] In addition, since the lower end of one of the first support plates 5 is located between the lower ends of the two second support plates 6, and a hinge shaft needs to be installed between the lower end of the first support plate 5 and the two side plates of the waist push base 3, in order to ensure that the sliding sleeve 12 can slide back and forth smoothly, an avoidance notch 18 is provided at the upper part of the middle position of the two side walls of the sliding sleeve 12, so that the sliding sleeve 12 can avoid the hinge shaft between the lower end of the corresponding first support plate 5 and the waist push base 3 during the sliding process.

[0041] In this embodiment, more specifically, the two scissor-type support frames have completely identical structural forms. The explanation will be further elaborated by taking the movement of one scissor-type support frame as an example.

[0042] First elongated through holes 10 are symmetrically formed on both side walls of one end of the first slide groove 2. The upper end of the first support plate 5 is connected to a first rotating shaft, and the two ends of the first rotating shaft are respectively movably fitted into the two first elongated through holes 10. The first roller 7 is fitted onto the first rotating shaft. Similarly, second elongated through holes 11 are symmetrically formed on both side walls of one end of the second slide groove 4. The lower end of the second support plate 6 is connected to a second rotating shaft, and the two ends of the second rotating shaft are respectively movably fitted into the two second elongated through holes 11. The second roller 8 is fitted onto the second rotating shaft. In this structure, the first roller 7 and the second roller 8 mainly serve as vertical supports. The first rotating shaft and the second rotating shaft are not subjected to vertical forces; they only serve as lateral sliding guides. Therefore, the first rotating shaft and the second rotating shaft may or may not contact the side walls of the corresponding elongated through holes, leaving a slight gap.

[0043] In this embodiment, the waist push support 1 and the waist push base 3 have the same structure and can be replaced, which facilitates mass production and reduces production costs. Preferably, the waist push support 1 and the waist push base 3 are U-shaped channel steels. To reduce weight, process through holes are opened on the bottom walls of the two U-shaped channel steel structures, avoiding the position of the rollers. Process through holes are also opened on the bottom wall of the sliding sleeve 12, reducing weight while ensuring strength performance.

[0044] To facilitate the connection between the entire lumbar support structure and the bed frame, fixing frames 13 for connecting to the bed frame 14 or bed board are connected to both sides of the lumbar support base 3, and the electric push rod 9 is connected to the fixing frame 13. In this embodiment, the fixing frame 13 includes a square tube 1302, and right-angled brackets 1301 are connected to the outer walls of the two side plates at both ends of the lumbar support base 3. The two square tubes 1302 are respectively connected to the two sides of the lumbar support base 3 along the length direction through the corresponding brackets 1301. The electric push rod 9 is fixed to one of the square tubes 1302, and the free end of the electric push rod 9 is fixed to the outer wall of the sliding sleeve 12 through the connecting shaft.

[0045] See appendix Figure 1 and 2 Additionally, this utility model embodiment also discloses an electric bed, which includes a bed frame 14, a head and backrest board 15, and a buttocks board 16. The buttocks board 16 is fixedly connected to the bed frame 14 at a position corresponding to the buttocks when the human body is lying flat. The head and backrest board 15 is located on the bed frame 14 near the human head and back, and one end of the head and backrest board 15 is rotatably connected to the buttocks board 16. The bed frame 14 is also connected to a drive assembly (not shown in the figure) for driving the head and backrest board 15 to rise and fall, so as to realize the adjustment of the human sleeping posture. The electric bed also includes the aforementioned lumbar support structure, and a lumbar support is provided on the side of the head and backrest board 15 near the buttocks board 16. An elongated clearance through-hole 17 extends along the width of the head and back bed board 15. The lumbar support structure is connected to the lower surface of the head and back bed board 15 via a fixing frame 13, and its position corresponds to the clearance through-hole 17. This allows the lumbar support seat 1 to extend out of the clearance through-hole 17 during operation. The upper end of the lumbar support seat 1 is connected to a lumbar support plate that matches the clearance through-hole 17. In the initial state, the lumbar support plate is located inside the clearance through-hole 17 and is flush with the head and back bed board 15. When the waist needs to be raised, the electric push rod 9 drives the lumbar support frame to raise the lumbar support plate, thereby customizing the elevation of the waist and improving comfort.

[0046] In the description of this utility model, the reference to terms such as "this embodiment," "some embodiments," etc., 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 utility model. 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 a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0047] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A waist-pushing structure, characterized in that: include Waist push support seat (1) is used to install waist push plate, and the lower end of the waist push support seat (1) is provided with a first sliding groove (2) with the opening facing downward; The waist push base (3) is located below the waist push support (1), and the upper end of the waist push base (3) is provided with a second sliding groove (4) with the opening facing upward; At least one scissor-type support frame, the scissor-type support frame including a first support plate (5) and a second support plate (6), the upper end of the first support plate (5) is connected to a first roller (7), and the first roller (7) is rolled in the first slide groove (2), the lower end of the first support plate (5) is hinged to the waist push base (3); the upper end of the second support plate (6) is hinged to the waist push support seat (1), the lower end of the second support plate (6) is connected to a second roller (8), and the second roller (8) is rolled in the second slide groove (4); An electric actuator (9) is horizontally connected to the waist-pushing base (3), and the free end of the electric actuator (9) is connected to the lower end of the second support plate (6).

2. The waist-pushing structure according to claim 1, characterized in that: The first slide (2) has symmetrically provided first elongated through holes (10) on both sides of one end. The upper end of the first support plate (5) is connected to a first rotating shaft. The two ends of the first rotating shaft are respectively movably fitted in the two first elongated through holes (10), and the first roller (7) is fitted on the first rotating shaft. The second slide (4) has symmetrically provided second elongated through holes (11) on both sides of one end. The lower end of the second support plate (6) is connected to a second rotating shaft. The two ends of the second rotating shaft are respectively movably fitted in the two second elongated through holes (11), and the second roller (8) is fitted on the second rotating shaft.

3. The waist-pushing structure according to claim 2, characterized in that: The scissor-type support frame consists of two side-by-side arranged along the length of the waist push base (3). The waist push base (3) is connected to a sliding sleeve (12) that can slide along its length. The lower ends of the second support plates (6) of the two scissor-type support frames are respectively hinged to the two ends of the sliding sleeve (12). The free end of the electric push rod (9) is connected to the sliding sleeve (12).

4. The waist-pushing structure according to claim 3, characterized in that: The sliding sleeve (12) is a U-shaped sleeve with the opening facing upward. The U-shaped sleeve is slidably fitted on the outside of the waist push base (3). The two ends of the second rotating shaft at the lower end of the two second support plates (6) are respectively connected to the two side walls at both ends of the U-shaped sleeve.

5. The waist-pushing structure according to claim 3, characterized in that: The waist push support (1) and waist push base (3) have the same structure and are both made of channel steel. The waist push base (3) is connected to a fixing frame (13) on both sides for connecting to the bed frame (14) or bed board. The electric push rod (9) is connected to the fixing frame (13).

6. The waist-pushing structure according to claim 1, characterized in that: The first roller (7) and the second roller are rubber rollers.

7. An electric bed, comprising a bed frame (14), a head and backrest board (15), and a hiprest board (16), wherein the hiprest board (16) is fixedly connected to the bed frame (14), one end of the head and backrest board (15) is rotatably connected to the hiprest board (16), and a drive assembly for driving the head and backrest board (15) to rise and fall is connected to the bed frame (14), characterized in that: It also includes the lumbar support structure as described in any one of claims 1 to 6, wherein the head and back bed board (15) has an avoidance through hole (17) on the side near the buttock bed board (16), the lumbar support structure is connected to the lower surface of the head and back bed board (15) through the fixing frame (13), the lumbar support seat (1) can extend out of the avoidance through hole (17), and the upper end of the lumbar support seat (1) is connected to a lumbar support plate that matches the avoidance through hole (17).

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