Head support and backrest lifting linkage structure

Abstract

The utility model discloses a head support backrest lifting linkage structure, which comprises a fixed frame and a plurality of bed plates mounted on the fixed frame, and is characterized by further comprising a linkage mechanism capable of linking a back bed plate and a head bed plate, and a driving mechanism in transmission connection with the linkage mechanism, the linkage mechanism is respectively connected with the back bed board and the head bed board, and the driving mechanism drives the linkage mechanism to adjust the back bed board and the head bed board. The back bed board and the head bed board can be adjusted, the structure is simple, cost is reduced, and maintenance is convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of electric beds, and in particular to a headrest and backrest lifting linkage structure. Background Technology

[0002] With the development of electric bed technology, people's demand for electric beds is increasing. The functions of electric beds are also constantly being improved and developed.

[0003] In the current technology, the backrest and headrest of electric beds usually need to be equipped with independent control mechanisms for adjustment. This design architecture has obvious drawbacks: on the one hand, multiple control mechanisms complicate the overall structure and increase the risk of mechanical failure; on the other hand, the superposition of multiple independent control modules not only increases production costs but also makes product maintenance more difficult.

[0004] Therefore, designing a mechanism that links the head and back of the bed board is essential. Utility Model Content

[0005] To address the aforementioned problems with existing electric beds, this paper aims to provide a headrest and backrest lifting linkage structure. Through the cooperation of a drive mechanism and a linkage mechanism, the backrest and headrest can be adjusted. The structure is simple, reduces costs, and is easy to maintain.

[0006] The specific technical solution is as follows:

[0007] A headrest backrest lifting linkage structure includes: a fixed frame and multiple bed boards installed on the fixed frame; it also includes: a linkage mechanism that enables the back bed board and the head bed board to be linked, and a drive mechanism that is connected to the linkage mechanism; the linkage mechanism is connected to the back bed board and the head bed board respectively; and the drive mechanism drives the linkage mechanism to adjust the back bed board and the head bed board.

[0008] The aforementioned headrest and backrest lifting linkage structure includes a linkage mechanism comprising a linkage component, a head drive rod, and a back drive rod connected to the linkage component. The head drive rod is connected to the headboard, the back drive rod is connected to the backboard, the linkage component is connected to the backboard, and the drive mechanism is connected to the linkage component for transmission. The backboard and headboard are adjusted via the head drive rod and the back drive rod.

[0009] In the aforementioned headrest and backrest lifting linkage structure, the linkage component is provided with at least one sliding groove, and the backrest transmission rod slides in cooperation with the sliding groove.

[0010] The aforementioned headrest backrest lifting linkage structure includes, wherein the linkage component comprises: two linkage plates arranged in parallel, the drive mechanism and the head transmission rod extending between the two linkage plates and hinged to the two linkage plates;

[0011] Both linkage plates are provided with the aforementioned sliding grooves, and the back transmission rod slides in conjunction with the two sliding grooves via a sliding shaft.

[0012] In the aforementioned headrest and backrest lifting linkage structure, the hinge points of the drive mechanism and the linkage component, the hinge points of the head transmission rod and the linkage component, the slide groove, and the hinge points of the backrest and the linkage component are sequentially distributed along a first direction, which is an arc-shaped direction.

[0013] In the aforementioned headrest and backrest lifting linkage structure, a head support is installed on the headboard, and the head support is hinged to the head transmission rod.

[0014] The backrest board is equipped with a first backrest support and a second backrest support. The first backrest support is hinged to the backrest transmission rod, and the second backrest support is hinged to the linkage component.

[0015] The aforementioned headrest and backrest lifting linkage structure further includes: a sliding frame slidably connected to the fixed frame, a lumbar bed board mounted on the sliding frame, a back bed board rotatably connected to the lumbar bed board, and a headboard rotatably connected to the back bed board.

[0016] In the aforementioned headrest and backrest lifting linkage structure, at least one support rod is installed on the fixed frame, and the two ends of the support rod are respectively hinged to the head and back bed boards of the fixed frame.

[0017] In the aforementioned headrest and backrest lifting linkage structure, a lumbar support adjustment mechanism is installed on the sliding frame, and the lumbar bed board has an opening for the lumbar support adjustment mechanism to extend out.

[0018] The lumbar support adjustment mechanism includes: a lumbar support drive, a linkage assembly, and a lumbar support. The lumbar support drive is kinetically connected to the linkage assembly so that the lumbar support extends out of the opening.

[0019] In the aforementioned headrest and backrest lifting linkage structure, the tail of the fixed frame is provided with one or more guide brackets, and the bottom of the footboard is provided with one or more rollers. When the bed board returns to its original position, the rollers roll onto the guide brackets to guide or support the footboard.

[0020] The positive effects of the above technical solution compared with the existing technology are:

[0021] This utility model, through the cooperation of a drive mechanism and a linkage mechanism, can adjust the backrest and headrest of the bed. It has a simple structure, reduces costs, and is easy to maintain.

[0022] This utility model features a sliding frame and support rod. When the drive mechanism drives the linkage mechanism, the overall bed board, and the sliding frame to move towards the head of the fixed frame, the drive mechanism first drives the head transmission rod to adjust the head bed board. The sliding shaft slides to the other end of the slide groove, and the back bed board and the sliding frame adjust simultaneously. That is, while the back bed board rotates, the sliding frame slides horizontally, enabling the overall bed board to be adjusted against the wall and the angle of the back bed board and the head bed board to be adjusted. The structure is reasonable, and the use of the same set of drive mechanism and linkage mechanism reduces costs and facilitates maintenance. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a headrest backrest lifting linkage structure according to the present invention;

[0024] Figure 2 This is a schematic diagram of the overall structure of a headrest backrest lifting linkage structure according to the present invention;

[0025] Figure 3 This is a schematic diagram of the overall structure of a headrest backrest lifting linkage structure according to the present invention;

[0026] Figure 4 This is a schematic diagram of the overall structure of a headrest backrest lifting linkage structure according to the present invention;

[0027] Figure 5 This utility model provides a headrest and backrest lifting linkage structure. Figure 1 A magnified view of a portion of the image;

[0028] Figure 6 This utility model provides a headrest and backrest lifting linkage structure. Figure 3 A magnified view of a portion of the image;

[0029] Figure 7 This utility model provides a headrest and backrest lifting linkage structure. Figure 4 A magnified view of a portion of the image;

[0030] Figure 8 This utility model provides a headrest and backrest lifting linkage structure. Figure 3 A magnified view of a portion of the image;

[0031] Figure 9 This is a schematic diagram of the linkage component in the headrest backrest lifting linkage structure of this utility model;

[0032] Figure 10 This is a schematic diagram of the overall structure of the headrest and backrest lifting linkage structure of this utility model in a horizontal position.

[0033] Figure 11 This is a schematic diagram of the overall structure of the headrest and backrest lifting linkage structure of this utility model in the headboard tilted-up state;

[0034] Figure 12 This is a schematic diagram of the overall structure of the headrest backrest lifting linkage structure of this utility model in the initial position of the backrest.

[0035] In the attached diagram: 1. Fixed frame; 2. Linkage mechanism; 3. Drive mechanism; 4. Sliding frame; 5. Support rod; 6. Lumbar support adjustment mechanism; 7. Linkage assembly; 11. Headboard; 12. Backboard; 13. Lumbar support board; 14. Footboard; 21. Linkage component; 22. Head drive rod; 23. Back drive rod; 24. Slide groove; 25. Linkage plate; 26. Head support; 27. First back support; 28. Second back support; 29. ​​Reinforcing plate; 61. Opening; 62. Lumbar support drive component; 63. Lumbar support; 71. Linkage rod; 72. Crossbar; 73. Push-out rod; 74. First connecting plate; 75. Second connecting plate; 76. Slider; 81. Guide support; 82. Roller; 83. Guide wheel; 84. Guide groove. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0037] like Figures 1 to 12 As shown, a preferred embodiment of the headrest backrest lifting linkage structure is illustrated, including: a fixed frame 1 and a plurality of bed boards mounted on the fixed frame 1, and further including: a linkage mechanism 2 that enables the back bed board and the head bed board to be linked, and a drive mechanism 3 that is transmittedly connected to the linkage mechanism 2. The linkage mechanism 2 is connected to the back bed board 12 and the head bed board 11 respectively, and the drive mechanism 3 drives the linkage mechanism 2 to adjust the back bed board 12 and the head bed board 11.

[0038] Furthermore, as a preferred embodiment, the headrest backrest lifting linkage structure also includes: a sliding frame 4 slidably connected to the fixed frame 1, the sliding frame 4 moving along the front-back direction of the fixed frame 1, the lumbar bed board 13 being mounted on the sliding frame 4, the back bed board 12 being rotatably connected to the lumbar bed board 13, and the head bed board 11 being rotatably connected to the back bed board 12.

[0039] Furthermore, the two sides of the sliding frame 4 are slidably engaged with the two sides of the fixed frame 1 through guide wheels 83. Both sides of the fixed frame 1 are provided with guide grooves 84, and the guide wheels 83 are slidably disposed in the guide grooves 84.

[0040] Furthermore, as a preferred embodiment, at least one support rod 5 is installed on the fixed frame 1, and the two ends of the support rod 5 are respectively hinged to the head and back bed boards 12 of the fixed frame 1.

[0041] When the drive mechanism 3 drives the linkage mechanism 2 to move towards the head of the fixed frame 1, the overall bed board and the sliding frame 4 move towards the head of the fixed frame 1. The head bed board 11 and the back bed board 12 are supported by the support rod 5. With the cooperation of the linkage mechanism 2, the head bed board 11 and the back bed board 12 can be adjusted to a suitable angle. Therefore, by using the same set of drive mechanism 3, linkage mechanism 2 and support rod 5, the present invention can realize the adjustment of the overall bed board against the wall and the angle adjustment of the back bed board 12 and the head bed board 11. The structure is reasonable, the cost is reduced and the maintenance is convenient.

[0042] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention.

[0043] Based on the above, this utility model also has the following embodiments:

[0044] For further embodiments of this utility model, please refer to... Figures 1 to 12 As shown, the linkage mechanism 2 includes: a linkage member 21, and a head transmission rod 22 and a back transmission rod 23 connected to the linkage member 21. The head transmission rod 22 is connected to the head bed board 11, the back transmission rod 23 is connected to the back bed board 12, the linkage member 21 is connected to the back bed board 12, and the drive mechanism 3 is connected to the linkage member 21 for transmission. The back bed board 12 and the head bed board 11 are adjusted through the head transmission rod 22 and the back transmission rod 23.

[0045] In a further embodiment of the present invention, the linkage 21 is provided with at least one slide groove 24, and the back transmission rod 23 is slidably engaged with the slide groove 24.

[0046] In a further embodiment of the present invention, the linkage 21 includes two parallel linkage plates 25, the drive mechanism 2 and the head transmission rod 22 respectively extending between the two linkage plates 25 and hinged to the two linkage plates 25.

[0047] In a further embodiment of this utility model, each of the two linkage plates 25 is provided with a sliding groove 24, and the back transmission rod 23 slides in cooperation with the two sliding grooves 24 through a sliding shaft.

[0048] This invention improves sliding stability by allowing the two ends of the sliding shaft to slide within two sliding grooves 24.

[0049] Furthermore, the groove 24 is an arc-shaped groove.

[0050] In a further embodiment of this utility model, the hinge points of the drive mechanism 3 and the linkage member 21, the hinge points of the head transmission rod 22 and the linkage member 21, the slide groove 24, and the hinge points of the back bed board 12 and the linkage member 21 are distributed sequentially along a first direction, which is an arc-shaped direction.

[0051] The working process of this utility model is as follows: in a horizontal position (e.g.) Figure 10 → The headboard of the bed is tilted up (as shown in the picture)

[0052] 11) → Starting position (e.g.) Figure 12 → Rotate the head and back of the bed board (e.g.) Figure 1-4 When the drive mechanism 3 drives the linkage mechanism 2, the overall bed board and the sliding frame 4 to move towards the head of the fixed frame 1, the sliding shaft moves from one side of the sliding groove 24 to the other end of the sliding groove 24. At this time, the head bed board 11 tilts up and continues to rotate until the backrest is in the initial position. The drive mechanism 3 continues to drive the linkage mechanism 2, the overall bed board and the sliding frame 4 to move towards the head of the fixed frame 1. The head bed board 11 and the back bed board 12 flip together until they are adjusted to a suitable angle.

[0053] In a further embodiment of this utility model, a head support 26 is installed on the headboard 11, and the head support 26 is hinged to the head transmission rod 22.

[0054] In a further embodiment of this utility model, a first back support 27 and a second back support 28 are installed on the back bed board 12. The first back support 27 is hinged to the back transmission rod 23, and the second back support 28 is hinged to the linkage member 21.

[0055] Furthermore, the first back support 27 is located on the side of the backrest bed board 12 near the headrest bed board 1, and the second back support 28 is located on the side of the backrest bed board 12 near the lumbar bed board 13.

[0056] The linkage component 21 of this utility model is configured as two parallel linkage plates 25, which can improve the stability of the linkage mechanism.

[0057] Furthermore, the linkage component 21 also includes a connecting plate 29, and the two linkage plates 25 are fixedly connected by the reinforcing plate 29.

[0058] Furthermore, the linkage 21 is an integral structure.

[0059] The linkage component 21 of this utility model is provided with a connecting plate and an integrally formed structure, which improves the structural strength of the linkage component 21.

[0060] In a further embodiment of this utility model, a lumbar support adjustment mechanism 6 is installed on the sliding frame 4, and the lumbar bed board 13 has an opening 61 for the lumbar support adjustment mechanism 6 to extend out.

[0061] In a further embodiment of the present invention, the lumbar support adjustment mechanism 6 includes: a lumbar support drive member 62, a connecting rod assembly 7, and a lumbar support 63. The lumbar support drive member 62 is connected to the connecting rod assembly 7 in a transmission manner so that the lumbar support 63 extends out of the opening.

[0062] Furthermore, the lumbar support drive unit 62 is mounted on the sliding frame 4.

[0063] Furthermore, the linkage assembly 7 includes: a linkage 71, a crossbar 72, two connecting plate assemblies, and two ejector rods 73. One end of the linkage 71 is hinged to the lumbar support drive member 62, and the other end of the linkage 71 is fixedly connected to the crossbar 72. Each connecting plate assembly is respectively installed between the end of the crossbar 72 and the side of the sliding frame 4. The ejector rods 73 are installed on the connecting plate assemblies, and the lumbar support 63 is installed on the two ejector rods 73.

[0064] Each connecting plate assembly includes: a first connecting plate 74, a second connecting plate 75, and a slider 76, the slider 76 being laterally slidable on the side of the sliding frame 4;

[0065] One end of the first connecting plate 74 is hinged to the slider 76, and the other end of the first connecting plate 75 is hinged to the middle of the ejector rod 73.

[0066] One end of the second connecting plate 75 is fixedly connected to the end of the crossbar 72, the middle part of the second connecting plate 75 is hinged to the slider 76, and the other end of the second connecting plate 75 is hinged to one end of the ejector rod 73.

[0067] The other end of the lumbar support 63 is fixedly connected to the push rod 73.

[0068] This utility model enables the lumbar support 63 to pass through the opening 61 of the lumbar bed board 13 through the lumbar support drive component 62 and the connecting rod assembly 7.

[0069] Furthermore, both the drive mechanism 3 and the lumbar support drive component 62 are one of the following: pneumatic cylinder drive, electric cylinder drive, hydraulic cylinder drive, ball screw type push rod drive, linear motor drive, belt drive, and chain drive.

[0070] In a further embodiment of the present invention, the tail of the fixed frame 1 is provided with one or more guide brackets 81, and the bottom of the footboard 14 is provided with one or more rollers 82. When the bed board returns to its original position, the rollers 82 roll onto the guide brackets 81 to guide or support the footboard 14.

[0071] Due to its own weight, the footboard 14 of this utility model sinks down. When the footboard returns to its original position, the roller 82 contacts the guide bracket 81, which can guide and support, and lift the footboard 14 to a flat position.

[0072] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A headrest and backrest lifting linkage structure, comprising: A fixed frame and a plurality of bed boards mounted on the fixed frame, characterized in that it further includes: a linkage mechanism that enables the back bed board and the head bed board to be linked, and a drive mechanism that is connected to the linkage mechanism for transmission, wherein the linkage mechanism is connected to the back bed board and the head bed board respectively, and the drive mechanism drives the linkage mechanism to adjust the back bed board and the head bed board. The linkage mechanism includes: a linkage component, and a head drive rod and a back drive rod connected to the linkage component. The head drive rod is connected to the headboard, the back drive rod is connected to the backboard, the linkage component is connected to the backboard, and the drive mechanism is connected to the linkage component for transmission. The backboard and headboard are adjusted through the head drive rod and the back drive rod.

2. The headrest and backrest lifting linkage structure according to claim 1, characterized in that, The linkage component is provided with at least one sliding groove, and the back transmission rod slides in cooperation with the sliding groove.

3. The headrest and backrest lifting linkage structure according to claim 2, characterized in that, The linkage component includes: two parallel linkage plates, the drive mechanism and the head transmission rod extending between the two linkage plates and hinged to the two linkage plates; Both linkage plates are provided with the aforementioned sliding grooves, and the back transmission rod slides in conjunction with the two sliding grooves via a sliding shaft.

4. The headrest and backrest lifting linkage structure according to claim 2, characterized in that, The hinge points of the drive mechanism and the linkage, the hinge points of the head transmission rod and the linkage, the slide, and the hinge points of the back bed board and the linkage are distributed sequentially along a first direction, which is an arc-shaped direction.

5. The headrest and backrest lifting linkage structure according to claim 1, characterized in that, A head support is installed on the headboard, and the head support is hinged to the head transmission rod. The backrest board is equipped with a first backrest support and a second backrest support. The first backrest support is hinged to the backrest transmission rod, and the second backrest support is hinged to the linkage component.

6. The headrest and backrest lifting linkage structure according to claim 1, characterized in that, Also includes: The sliding frame is slidably connected to the fixed frame. The lumbar bed board is installed on the sliding frame, the back bed board is rotatably connected to the lumbar bed board, and the head bed board is rotatably connected to the back bed board.

7. The headrest and backrest lifting linkage structure according to claim 6, characterized in that, At least one support rod is installed on the fixed frame, and the two ends of the support rod are respectively hinged to the head and back bed boards of the fixed frame.

8. The headrest and backrest lifting linkage structure according to claim 6, characterized in that, The sliding frame is equipped with a lumbar support adjustment mechanism, and the lumbar bed board has an opening for the lumbar support adjustment mechanism to extend out. The lumbar support adjustment mechanism includes: a lumbar support drive, a linkage assembly, and a lumbar support. The lumbar support drive is kinetically connected to the linkage assembly so that the lumbar support extends out of the opening.

9. The headrest and backrest lifting linkage structure according to claim 6, characterized in that, The fixed frame has one or more guide brackets at its tail and one or more rollers at the bottom of the footboard. When the bed board returns to its original position, the rollers roll onto the guide brackets to guide or support the footboard.

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