Waist supporting device and bed frame

Abstract

The utility model provides a waist propping device and a bedstead, which relate to the technical field of furniture and comprise a waist propping support plate, a folding connecting rod mechanism and a driving piece. Wherein the folding connecting rod mechanism comprises two first double-connecting-rod assemblies which are arranged in a spaced mode, and one end of each first double-connecting-rod assembly is hinged to the waist supporting plate; the driving part is arranged on the bed frame, the output end of the driving part is in transmission connection with the ends, away from the waist jacking supporting plate, of the two first double-connecting-rod assemblies, and the driving part is used for driving the two first double-connecting-rod assemblies to be synchronously unfolded or folded so as to achieve vertical lifting of the waist jacking supporting plate. Therefore, the lifting mechanism has the advantages of being capable of vertically lifting and large in lifting stroke.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, and in particular to a lumbar support device and a bed frame. Background Technology

[0002] With the development of technology, smart homes have become increasingly popular, and electric beds have gradually become common household items in modern homes due to their comfort.

[0003] To further enhance user comfort, in addition to traditional head, back, and leg lifting functions, a lumbar support function has been incorporated into electric beds. This lumbar support function provides extra support for the lower back, helping users maintain the natural curve of the spine, reducing lumbar pressure, effectively relieving lumbar fatigue, and improving sleep quality. Existing lumbar support mechanisms typically achieve lifting through circular motion, but this structure often cannot achieve vertical lifting, and during use, the bottom of the mattress is prone to friction with the moving parts, leading to wear and tear on the mattress bottom over time. Furthermore, existing structures are limited in their range of motion; due to the mechanism's transmission method, the lumbar support travel is relatively small, making it difficult to achieve large-scale support adjustments.

[0004] Therefore, a vertical lifting device and bed frame with a large lifting stroke are needed for design. Utility Model Content

[0005] The purpose of this utility model is to address the defects and deficiencies of the existing technology by providing a lumbar support device and bed frame, which solves at least one of the above-mentioned technical problems and has the advantages of vertical lifting and a large lifting stroke.

[0006] To achieve the above objectives, this utility model provides a waist support device, comprising:

[0007] Top waist support plate;

[0008] The folding linkage mechanism includes two spaced-apart first double linkage assemblies, one end of each first double linkage assembly being hinged to the top waist support plate;

[0009] A drive unit, mounted on the bed frame, has its output end connected to the end of two first double-link assemblies away from the top and waist support plate. It is used to drive the two first double-link assemblies to expand or retract synchronously, so as to realize the vertical lifting and lowering of the top and waist support plate.

[0010] Optionally, the top waist device further includes:

[0011] The gear and rack mechanism includes two drive gears rotatably mounted on a bed frame, and a rack meshing with the drive gears;

[0012] Each of the first double-link components is connected to the corresponding drive gear at one end away from the top waist support plate;

[0013] The output end of the drive component is connected to the rack and pinion drive.

[0014] Two first double-link assemblies are symmetrically arranged, and the rack is arranged in a horizontal direction to drive the two drive gears to rotate in opposite directions so as to synchronously drive the first double-link assemblies to symmetrically expand or contract.

[0015] Optionally, the lower surface of one end of the rack and the upper surface of the other end are respectively provided with meshing teeth; the meshing teeth at both ends of the rack respectively mesh with the corresponding drive gears through intermediate gears to realize the opposite rotation of the two drive gears.

[0016] Optionally, the top waist device further includes a slide rail arranged horizontally on the bed frame, the slide rail having a T-shaped limiting slide groove; the bottom of the rack has a sliding wing that cooperates with the T-shaped limiting slide groove to achieve sliding guidance on the slide rail.

[0017] Optionally, each of the first double-link assemblies includes a first link and a second link hinged to each other; one end of the first link is hinged to the top waist support plate; one end of the second link is movably connected to the drive gear; and the distance between the hinge points of the two first links and the second link is the maximum distance between the two first double-link assemblies in the horizontal direction.

[0018] Optionally, the support device further includes two first support frames disposed below the bed frame and bed board. The drive gear and the intermediate gear are rotatably mounted on the corresponding first support frames via first pins and second pins, respectively. The second connecting rod is fixedly connected to the corresponding first pin to achieve a follow-up connection with the drive gear.

[0019] Optionally, the folding linkage mechanism further includes a second double-link assembly, one end of which is hinged to the top waist support plate near one end, and the other end is hinged to the bed frame; the two first double-link assemblies are respectively hinged to the middle of the top waist support plate and the end away from the second double-link assembly.

[0020] Optionally, the second double-link assembly includes a third link and a fourth link hinged to each other; one end of the third link is hinged to the top waist support plate, and one end of the fourth link is hinged to the bed frame;

[0021] The third link is the same length as the first link, and the fourth link is the same length as the second link;

[0022] The folding linkage mechanism also includes a linkage rod, one end of which is connected to the hinge point between the first link and the second link in the middle of the first double link assembly located in the middle of the top waist support plate, and the other end is connected to the hinge point between the third link and the fourth link in the middle of the second double link assembly.

[0023] Optionally, the lumbar support device further includes a second support frame and a third support frame disposed below the bed frame and bed board, the second support frame being located between the two first support frames, and the third support frame being configured corresponding to the second double linkage assembly;

[0024] The slide rail is mounted on the second support frame;

[0025] The driving component is a push rod motor hinged to one of the first support frames, and the push rod of the push rod motor is connected to the rack;

[0026] One end of the fourth link is rotatably mounted on the third support frame via a third pin.

[0027] Another aspect of this utility model provides a bed frame, including: a lumbar support board and a lumbar support device as described above; the lumbar support board is fixed to the lumbar support plate and is vertically lifted and lowered under the drive of the lumbar support device.

[0028] Compared with the prior art, the advantages of this application are:

[0029] The lumbar support device includes two spaced-apart first double-link assemblies, a lumbar support plate, and a drive component. One end of each of the two first double-link assemblies is hinged to the lumbar support plate, and the other end is connected to the drive component. Because the two first double-link assemblies do not shift horizontally during synchronous unfolding or retraction under the drive component, the lumbar support plate moves approximately vertically throughout the process, thus avoiding rubbing against the mattress. Simultaneously, the first double-link assemblies can gradually unfold from a near-folded state to a near-extended state, offering a large lifting stroke and a wide adjustment range. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the bed frame structure according to an embodiment of the present utility model, wherein the waist support device is in the lifting state;

[0032] Figure 2This is a schematic diagram of the structure of the top waist device and the top waist plate in the lifting state according to an embodiment of the present utility model;

[0033] Figure 3 This is a schematic diagram of the structure of the top waist device and the top waist plate in the unlifted state according to an embodiment of the present utility model;

[0034] Figure 4 This is an exploded structural diagram of the top waist device and the top waist plate in an embodiment of the present utility model;

[0035] Figure 5 This is a schematic diagram of the lifting device in the lifting state according to an embodiment of the present utility model;

[0036] Figure 6 This is a schematic diagram of the structure of the waist support device in the unlifted state according to an embodiment of the present utility model;

[0037] Figure 7 This is a partial exploded view of the top waist device according to an embodiment of the present utility model;

[0038] Figure 8 This is a partial structural schematic diagram of the waist support device according to an embodiment of the present utility model;

[0039] Figure 9 This is a partial exploded view of the push rod motor, gear and rack mechanism, and slide rail in an embodiment of this utility model;

[0040] Figure 10 This is a partial exploded view of the structure of the first double-link assembly, the first support frame, the drive gear, and the intermediate gear in an embodiment of this utility model.

[0041] Explanation of reference numerals in the attached figures

[0042] 1000-bed frame;

[0043] 100-Top waist device;

[0044] 1-Top waist support plate;

[0045] 2-Gear and rack mechanism; 21-Drive gear; 22-Rack; 221-Meshing tooth; 222-Recess; 223-Sliding vane; 23-Intermediate gear;

[0046] 3- Folding linkage mechanism; 31- First double linkage assembly; 311- First link; 312- Second link; 32- Second double linkage assembly; 321- Third link; 322- Fourth link; 33- Linkage rod;

[0047] 4-Push rod motor; 41-Push rod;

[0048] 5-Slide rail; aT-type limiting slide groove;

[0049] 61-First support frame; 62-Second support frame; 63-Third support frame;

[0050] 71-First pin; 711-Long flat key; 712-Short flat key; 72-Second pin; 73-Third pin; 74-Limiting spacer; 75-Shaft retaining ring; 76-Self-locking nut;

[0051] 200-Top Waistboard;

[0052] 300 - Bed board; o - Long hole. Detailed Implementation

[0053] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0054] It should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "back," "side," and "circumferential" used in this utility model to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used to distinguish multiple parts or structures with the same or similar structures, and do not indicate any special limitation on the arrangement order or connection relationship.

[0055] Please refer to Figures 1 to 10 This utility model embodiment provides a waist support device 100, including: a waist support plate 1, a folding linkage mechanism 3, and a driving component. All of the above components are made of materials with sufficient strength.

[0056] The top waist support plate 1 is fixed below the top waist plate 200 and is used to drive the top waist plate 200 to move up and down when it moves up and down, so as to realize the waist support function of the electric bed (not shown in the figure).

[0057] The folding linkage mechanism 3 includes two spaced-apart first double-link assemblies 31, one end of each first double-link assembly 31 being hinged to the top waist support plate 1. The two first double-link assemblies 31 can be symmetrically arranged or arranged side by side. Preferably, they are arranged symmetrically to improve the stability of the structure and the lifting accuracy.

[0058] The drive unit is mounted on the bed frame 1000, and its output end is connected to the end of the two first double-link assemblies 31 away from the top and waist support plate 1. This drive unit is used to drive the two first double-link assemblies 31 to expand or retract synchronously, thereby achieving the vertical lifting and lowering of the top and waist support plate 1. Understandably, the connection between the output end of the drive unit and the two first double-link assemblies 31 can be achieved through a rack and pinion mechanism, a gear and belt mechanism, etc., and no specific limitations are imposed here.

[0059] Since the two first double-link assemblies 31 do not shift horizontally during synchronous unfolding or folding driven by the drive unit, the lumbar support plate 1 moves approximately vertically throughout the process, thus avoiding scratching against the mattress (not shown in the figure). Simultaneously, the first double-link assembly 31 can gradually unfold from a near-folded state to a near-extended state, with a large lifting stroke and a wide adjustment range.

[0060] Alternatively, please refer to Figure 7 and Figure 8 In this embodiment, the top waist device 100 further includes a gear and rack mechanism 2. The gear and rack mechanism 2 includes two drive gears 21 and a rack 22. The two drive gears 21 are rotatably mounted on the bed frame 1000, and the rack 22 meshes with the two drive gears 21 simultaneously to synchronously drive the two drive gears 21 to rotate. The end of each first double-link assembly 31 away from the top waist support plate 1 is movably connected to the corresponding drive gear 21. It can be understood that the movable connection of the first double-link assembly 31 to the corresponding drive gear 21 means that the first double-link assembly 31 is coaxially connected to a corresponding drive gear 21 and rotates with it. The output end of the drive member is connected to the rack 22 for driving the rack 22 to move. The movement of the rack 22 drives the two drive gears 21 to rotate synchronously, thereby changing the angle of the first double-link assembly 31 movably connected to the drive gear 21, thereby driving the two first double-link assemblies 31 to expand or contract synchronously to realize the vertical lifting and lowering of the top waist support plate 1.

[0061] Two first double-link assemblies 31 are symmetrically arranged, and a rack 22 is arranged horizontally to drive two drive gears 21 to rotate in opposite directions, so as to synchronously drive the first double-link assemblies 31 to symmetrically unfold or retract. In this way, the horizontal movement of the rack 22 can be converted into the vertical lifting and lowering of the top waist support plate 1, which is not only small in size and large in stroke, but also adaptable to various electric beds.

[0062] Alternatively, please refer to Figure 8 and Figure 9In this embodiment, the lower surface of one end of the rack 22 is provided with meshing teeth 221, and the upper surface of the other end is also provided with meshing teeth 221. The meshing teeth 221 at both ends of the rack 22 mesh with the drive gear 21 through the intermediate gear 23 to achieve the opposite rotation of the two drive gears 21. It can be understood that, in order to reduce the assembly space, the rack 22 is provided with corresponding recesses 222 at the end face positions of the meshing teeth 221 to reduce the thickness of the rack 22, while providing assembly space for the intermediate gear 23. Of course, in some other embodiments, the meshing teeth 221 at both ends of the rack 22 may mesh directly with the drive gear 21 without going through the intermediate gear 23, and no specific limitation is made here.

[0063] To make the linear motion of rack 22 smoother, optionally, please refer to... Figure 7 and Figure 9 In this embodiment, the support device 100 further includes a slide rail 5 horizontally disposed on the bed frame 1000, the slide rail 5 having a T-shaped limiting groove a; the bottom of the rack 22 has a sliding wing 223 that cooperates with the T-shaped limiting groove a, so as to achieve sliding guidance on the slide rail 5. Of course, in other embodiments, a groove can also be provided at the bottom of the rack 22, and a corresponding slider can be provided on the upper end face of the slide rail 5, as long as the sliding guidance between the slide rail 5 and the rack 22 can be achieved, no specific limitation is made here.

[0064] Alternatively, please refer to Figure 6 and Figure 8 In this embodiment, each first double-link assembly 31 includes a first link 311 and a second link 312 hinged to each other; one end of the first link 311 is hinged to the top waist support plate 1, and one end of the second link 312 is movably connected to the drive gear 21. The distance between the hinge points of the two first links 311 and the second link 312 is the maximum distance between the two first double-link assemblies 31 in the horizontal direction. Thus, when the drive gear 21 drives the folding linkage mechanism 3 to move, the first double-link assembly 31 can smoothly transition from an approximately folded state to an unfolded state, thereby achieving a large-stroke, approximately vertical lifting motion.

[0065] Alternatively, please refer to Figure 7 and Figure 10In this embodiment, the waist support device 100 further includes two first support frames 61 disposed below the bed board 300 of the bed frame 1000. The drive gear 21 and the intermediate gear 23 are rotatably mounted on the corresponding first support frames 61 via first pins 71 and second pins 72, respectively. The second connecting rod 312 is fixedly connected to the corresponding first pin 71 to achieve a follow-up connection with the drive gear 21. Specifically, the drive gear 21 is fixed to the first pin 71 via a long flat key 711 and screws, and the second connecting rod 312 is fixed to the first pin 71 via a short flat key 712. The second connecting rod 312 is limited to the ear plate of the first support frame 61 by a limiting spacer 74. The end of the first pin 71 is assembled to the ear plate of the first support frame 61 via the limiting spacer 74 and the shaft retaining ring 75. The second pin 72 is fixed to the first support frame 61 by a self-locking nut 76.

[0066] To improve the stability of the waist support device 100, optionally, please refer to... Figure 7 In this embodiment, the folding linkage mechanism 3 further includes a second double-link assembly 32. One end of the second double-link assembly 32 is hinged to the top waist support plate 1 near one end, and the other end is hinged to the bed frame 1000. Two first double-link assemblies 31 are respectively hinged to the middle of the top waist support plate 1 and the end away from the second double-link assembly 32. In this way, the top waist support plate 1 is supported by three support points to achieve vertical lifting, and its structure is more stable.

[0067] Alternatively, please refer to Figure 7 In this embodiment, the second double-link assembly 32 includes a third link 321 and a fourth link 322 hinged to each other. One end of the third link 321 is hinged to the top waist support plate 1, and one end of the fourth link 322 is hinged to the bed frame 1000. The third link 321 is equal in length to the first link 311, and the fourth link 322 is equal in length to the second link 312. The folding linkage mechanism 3 also includes a linkage rod 33. One end of the linkage rod 33 is connected to the hinge point between the first link 311 and the second link 312 in the middle of the first double-link assembly 31 located in the middle of the top waist support plate 1, and the other end is connected to the hinge point between the third link 321 and the fourth link 322 in the middle of the second double-link assembly 32. By connecting the first double-link assembly 31 and the second double-link assembly 32 in the middle position through the linkage rod 33, it can be ensured that the angle changes of the two mechanisms remain synchronized during the movement, avoiding the risk of structural deformation or jamming caused by one side moving first or asynchronously.

[0068] Understandably, please refer to Figure 4 and Figure 7 In this embodiment, at the same position along the length of the top waist support plate 1, two folding linkage mechanisms 3 can jointly support the top waist support plate 1 to further improve the stability of the top waist device 100.

[0069] Alternatively, please refer to Figure 7 In this embodiment, the lumbar support device 100 further includes a second support frame 62 and a third support frame 63 disposed below the bed board 300 of the bed frame 1000. The second support frame 62 is located between the two first support frames 61. The third support frame 63 is configured corresponding to the second double-link assembly 32. The slide rail 5 is mounted on the second support frame 62. The driving component is a push rod motor 4 hinged to one of the first support frames 61, and the push rod 41 of the push rod motor 4 is connected to the rack 22. One end of the fourth link 322 is rotatably mounted on the third support frame 63 through the third pin 73. Thus, the extension and retraction movement of the push rod 41 of the push rod motor 4 drives the linear movement of the rack 22, which in turn drives the two first double-link assemblies 31 to expand or retract synchronously through the drive gear 21, thereby realizing the vertical lifting and lowering of the lumbar support plate 1.

[0070] Please refer to Figures 1 to 3 Another aspect of this utility model embodiment provides a bed frame 1000, including a lumbar support plate 200 and a lumbar support device 100 as described above; the lumbar support plate 200 is fixed on the lumbar support plate 1 and achieves vertical lifting and lowering under the drive of the lumbar support device 100. Optionally, the bed frame 1000 also includes a bed board 300, which has a transversely arranged elongated hole o that matches the shape of the lumbar support plate 200; during the lifting and lowering process of the lumbar support plate 200, the lumbar support plate 200 has a retracted state accommodated in the elongated hole o, and an extended state protruding from the elongated hole o. Since the bed frame 1000 has all the structures and connection relationships of the lumbar support device 100, it has all the advantages of the lumbar support device 100, which will not be elaborated here.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the substance of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A waist support device, characterized in that, include: Top waist support plate (1); The folding linkage mechanism (3) includes two spaced-apart first double linkage assemblies (31), one end of each first double linkage assembly (31) being hinged to the top waist support plate (1); The drive unit is mounted on the bed frame, and its output end is connected to the end of the two first double linkage assemblies (31) away from the top waist support plate (1) for driving the two first double linkage assemblies (31) to expand or retract synchronously, so as to realize the vertical lifting of the top waist support plate (1).

2. The waist support device as described in claim 1, characterized in that, Also includes: The gear and rack mechanism (2) includes two drive gears (21) rotatably mounted on the bed frame, and a rack (22) meshing with the drive gears (21); The end of each of the first double-link assembly (31) away from the top waist support plate (1) is dynamically connected to the corresponding drive gear (21); The output end of the drive component is connected to the rack (22) for transmission. Two first double-link assemblies (31) are symmetrically arranged, and the rack (22) is arranged in the horizontal direction to drive the two drive gears (21) to rotate in opposite directions so as to synchronously drive the first double-link assemblies (31) to symmetrically unfold or retract.

3. The waist support device as described in claim 2, characterized in that, The rack (22) has meshing teeth (221) on its lower surface at one end and upper surface at the other end. The meshing teeth (221) at both ends of the rack (22) mesh with the corresponding drive gears (21) through intermediate gears (23) to achieve the opposite rotation of the two drive gears (21).

4. The waist support device as described in claim 3, characterized in that, It also includes a slide rail (5) arranged horizontally on the bed frame, the slide rail (5) having a T-shaped limiting groove (a); the bottom of the rack (22) has a sliding wing (223) that cooperates with the T-shaped limiting groove (a) to achieve sliding guidance on the slide rail (5).

5. The waist support device as described in claim 4, characterized in that, Each of the first double-link assemblies (31) includes a first link (311) and a second link (312) hinged to each other; one end of the first link (311) is hinged to the top waist support plate (1); one end of the second link (312) is movably connected to the drive gear (21); and the distance between the hinge points of the two first links (311) and the second link (312) is the maximum distance between the two first double-link assemblies (31) in the horizontal direction.

6. The waist support device as described in claim 5, characterized in that, It also includes two first support frames (61) disposed below the bed frame bed board (300). The drive gear (21) and the intermediate gear (23) are rotatably mounted on the corresponding first support frame (61) through the first pin (71) and the second pin (72) respectively. The second connecting rod (312) is fixedly connected to the corresponding first pin (71) to realize the follow-up connection with the drive gear (21).

7. The waist support device as described in claim 6, characterized in that, The folding linkage mechanism (3) further includes a second double linkage assembly (32), one end of which is hinged to the top waist support plate (1) near one end, and the other end is hinged to the bed frame; the two first double linkage assemblies (31) are respectively hinged to the middle of the top waist support plate (1) and the end away from the second double linkage assembly (32).

8. The waist support device as described in claim 7, characterized in that, The second double-link assembly (32) includes a third link (321) and a fourth link (322) hinged to each other; one end of the third link (321) is hinged to the top waist support plate (1), and one end of the fourth link (322) is hinged to the bed frame; The third link (321) is the same length as the first link (311), and the fourth link (322) is the same length as the second link (312). The folding linkage mechanism (3) further includes a linkage rod (33), one end of which is connected to the hinge point between the first link (311) and the second link (312) in the middle of the first double link assembly (31) located in the middle of the top waist support plate (1), and the other end is connected to the hinge point between the third link (321) and the fourth link (322) in the middle of the second double link assembly (32).

9. The waist support device as described in claim 8, characterized in that, It also includes a second support frame (62) and a third support frame (63) disposed below the bed frame bed board (300), the second support frame (62) being located between the two first support frames (61), and the third support frame (63) being configured corresponding to the second double linkage assembly (32); The slide rail (5) is mounted on the second support frame (62); The driving component is a push rod motor (4) hinged to one of the first support frames (61), and the push rod (41) of the push rod motor (4) is connected to the rack (22); One end of the fourth link (322) is rotatably mounted on the third support frame (63) via the third pin (73).

10. A bed frame, characterized in that, include: The top waist plate (200) and the top waist device as described in any one of claims 1-9; the top waist plate (200) is fixed on the top waist support plate (1) and is vertically lifted and lowered under the drive of the top waist device.

Images